Index: head/sys/netinet/sctp.h =================================================================== --- head/sys/netinet/sctp.h (revision 297661) +++ head/sys/netinet/sctp.h (revision 297662) @@ -1,637 +1,641 @@ /*- * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved. * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * a) Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * b) Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the distribution. * * c) Neither the name of Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #ifndef _NETINET_SCTP_H_ #define _NETINET_SCTP_H_ #include #define SCTP_PACKED __attribute__((packed)) /* * SCTP protocol - RFC4960. */ struct sctphdr { uint16_t src_port; /* source port */ uint16_t dest_port; /* destination port */ uint32_t v_tag; /* verification tag of packet */ uint32_t checksum; /* CRC32C checksum */ /* chunks follow... */ } SCTP_PACKED; /* * SCTP Chunks */ struct sctp_chunkhdr { uint8_t chunk_type; /* chunk type */ uint8_t chunk_flags; /* chunk flags */ uint16_t chunk_length; /* chunk length */ /* optional params follow */ } SCTP_PACKED; /* * SCTP chunk parameters */ struct sctp_paramhdr { uint16_t param_type; /* parameter type */ uint16_t param_length; /* parameter length */ } SCTP_PACKED; /* * user socket options: socket API defined */ /* * read-write options */ #define SCTP_RTOINFO 0x00000001 #define SCTP_ASSOCINFO 0x00000002 #define SCTP_INITMSG 0x00000003 #define SCTP_NODELAY 0x00000004 #define SCTP_AUTOCLOSE 0x00000005 #define SCTP_SET_PEER_PRIMARY_ADDR 0x00000006 #define SCTP_PRIMARY_ADDR 0x00000007 #define SCTP_ADAPTATION_LAYER 0x00000008 /* same as above */ #define SCTP_ADAPTION_LAYER 0x00000008 #define SCTP_DISABLE_FRAGMENTS 0x00000009 #define SCTP_PEER_ADDR_PARAMS 0x0000000a #define SCTP_DEFAULT_SEND_PARAM 0x0000000b /* ancillary data/notification interest options */ #define SCTP_EVENTS 0x0000000c /* deprecated */ /* Without this applied we will give V4 and V6 addresses on a V6 socket */ #define SCTP_I_WANT_MAPPED_V4_ADDR 0x0000000d #define SCTP_MAXSEG 0x0000000e #define SCTP_DELAYED_SACK 0x0000000f #define SCTP_FRAGMENT_INTERLEAVE 0x00000010 #define SCTP_PARTIAL_DELIVERY_POINT 0x00000011 /* authentication support */ #define SCTP_AUTH_CHUNK 0x00000012 #define SCTP_AUTH_KEY 0x00000013 #define SCTP_HMAC_IDENT 0x00000014 #define SCTP_AUTH_ACTIVE_KEY 0x00000015 #define SCTP_AUTH_DELETE_KEY 0x00000016 #define SCTP_USE_EXT_RCVINFO 0x00000017 #define SCTP_AUTO_ASCONF 0x00000018 /* rw */ #define SCTP_MAXBURST 0x00000019 /* rw */ #define SCTP_MAX_BURST 0x00000019 /* rw */ /* assoc level context */ #define SCTP_CONTEXT 0x0000001a /* rw */ /* explicit EOR signalling */ #define SCTP_EXPLICIT_EOR 0x0000001b #define SCTP_REUSE_PORT 0x0000001c /* rw */ #define SCTP_AUTH_DEACTIVATE_KEY 0x0000001d #define SCTP_EVENT 0x0000001e #define SCTP_RECVRCVINFO 0x0000001f #define SCTP_RECVNXTINFO 0x00000020 #define SCTP_DEFAULT_SNDINFO 0x00000021 #define SCTP_DEFAULT_PRINFO 0x00000022 #define SCTP_PEER_ADDR_THLDS 0x00000023 #define SCTP_REMOTE_UDP_ENCAPS_PORT 0x00000024 #define SCTP_ECN_SUPPORTED 0x00000025 #define SCTP_PR_SUPPORTED 0x00000026 #define SCTP_AUTH_SUPPORTED 0x00000027 #define SCTP_ASCONF_SUPPORTED 0x00000028 #define SCTP_RECONFIG_SUPPORTED 0x00000029 #define SCTP_NRSACK_SUPPORTED 0x00000030 #define SCTP_PKTDROP_SUPPORTED 0x00000031 #define SCTP_MAX_CWND 0x00000032 /* * read-only options */ #define SCTP_STATUS 0x00000100 #define SCTP_GET_PEER_ADDR_INFO 0x00000101 /* authentication support */ #define SCTP_PEER_AUTH_CHUNKS 0x00000102 #define SCTP_LOCAL_AUTH_CHUNKS 0x00000103 #define SCTP_GET_ASSOC_NUMBER 0x00000104 /* ro */ #define SCTP_GET_ASSOC_ID_LIST 0x00000105 /* ro */ #define SCTP_TIMEOUTS 0x00000106 #define SCTP_PR_STREAM_STATUS 0x00000107 #define SCTP_PR_ASSOC_STATUS 0x00000108 /* * user socket options: BSD implementation specific */ /* * Blocking I/O is enabled on any TCP type socket by default. For the UDP * model if this is turned on then the socket buffer is shared for send * resources amongst all associations. The default for the UDP model is that * is SS_NBIO is set. Which means all associations have a separate send * limit BUT they will NOT ever BLOCK instead you will get an error back * EAGAIN if you try to send too much. If you want the blocking semantics you * set this option at the cost of sharing one socket send buffer size amongst * all associations. Peeled off sockets turn this option off and block. But * since both TCP and peeled off sockets have only one assoc per socket this * is fine. It probably does NOT make sense to set this on SS_NBIO on a TCP * model OR peeled off UDP model, but we do allow you to do so. You just use * the normal syscall to toggle SS_NBIO the way you want. * * Blocking I/O is controlled by the SS_NBIO flag on the socket state so_state * field. */ #define SCTP_ENABLE_STREAM_RESET 0x00000900 /* struct * sctp_assoc_value */ #define SCTP_RESET_STREAMS 0x00000901 /* struct * sctp_reset_streams */ #define SCTP_RESET_ASSOC 0x00000902 /* sctp_assoc_t */ #define SCTP_ADD_STREAMS 0x00000903 /* struct * sctp_add_streams */ /* For enable stream reset */ #define SCTP_ENABLE_RESET_STREAM_REQ 0x00000001 #define SCTP_ENABLE_RESET_ASSOC_REQ 0x00000002 #define SCTP_ENABLE_CHANGE_ASSOC_REQ 0x00000004 #define SCTP_ENABLE_VALUE_MASK 0x00000007 /* For reset streams */ #define SCTP_STREAM_RESET_INCOMING 0x00000001 #define SCTP_STREAM_RESET_OUTGOING 0x00000002 /* here on down are more implementation specific */ #define SCTP_SET_DEBUG_LEVEL 0x00001005 #define SCTP_CLR_STAT_LOG 0x00001007 /* CMT ON/OFF socket option */ #define SCTP_CMT_ON_OFF 0x00001200 #define SCTP_CMT_USE_DAC 0x00001201 /* JRS - Pluggable Congestion Control Socket option */ #define SCTP_PLUGGABLE_CC 0x00001202 /* RS - Pluggable Stream Scheduling Socket option */ #define SCTP_PLUGGABLE_SS 0x00001203 #define SCTP_SS_VALUE 0x00001204 #define SCTP_CC_OPTION 0x00001205 /* Options for CC * modules */ +/* For I-DATA */ +#define SCTP_INTERLEAVING_SUPPORTED 0x00001206 + /* read only */ #define SCTP_GET_SNDBUF_USE 0x00001101 #define SCTP_GET_STAT_LOG 0x00001103 #define SCTP_PCB_STATUS 0x00001104 #define SCTP_GET_NONCE_VALUES 0x00001105 /* Special hook for dynamically setting primary for all assoc's, * this is a write only option that requires root privilege. */ #define SCTP_SET_DYNAMIC_PRIMARY 0x00002001 /* VRF (virtual router feature) and multi-VRF support * options. VRF's provide splits within a router * that give the views of multiple routers. A * standard host, without VRF support, is just * a single VRF. If VRF's are supported then * the transport must be VRF aware. This means * that every socket call coming in must be directed * within the endpoint to one of the VRF's it belongs * to. The endpoint, before binding, may select * the "default" VRF it is in by using a set socket * option with SCTP_VRF_ID. This will also * get propagated to the default VRF. Once the * endpoint binds an address then it CANNOT add * additional VRF's to become a Multi-VRF endpoint. * * Before BINDING additional VRF's can be added with * the SCTP_ADD_VRF_ID call or deleted with * SCTP_DEL_VRF_ID. * * Associations are ALWAYS contained inside a single * VRF. They cannot reside in two (or more) VRF's. Incoming * packets, assuming the router is VRF aware, can always * tell us what VRF they arrived on. A host not supporting * any VRF's will find that the packets always arrived on the * single VRF that the host has. * */ #define SCTP_VRF_ID 0x00003001 #define SCTP_ADD_VRF_ID 0x00003002 #define SCTP_GET_VRF_IDS 0x00003003 #define SCTP_GET_ASOC_VRF 0x00003004 #define SCTP_DEL_VRF_ID 0x00003005 /* * If you enable packet logging you can get * a poor mans ethereal output in binary * form. Note this is a compile option to * the kernel, SCTP_PACKET_LOGGING, and * without it in your kernel you * will get a EOPNOTSUPP */ #define SCTP_GET_PACKET_LOG 0x00004001 /* * hidden implementation specific options these are NOT user visible (should * move out of sctp.h) */ /* sctp_bindx() flags as hidden socket options */ #define SCTP_BINDX_ADD_ADDR 0x00008001 #define SCTP_BINDX_REM_ADDR 0x00008002 /* Hidden socket option that gets the addresses */ #define SCTP_GET_PEER_ADDRESSES 0x00008003 #define SCTP_GET_LOCAL_ADDRESSES 0x00008004 /* return the total count in bytes needed to hold all local addresses bound */ #define SCTP_GET_LOCAL_ADDR_SIZE 0x00008005 /* Return the total count in bytes needed to hold the remote address */ #define SCTP_GET_REMOTE_ADDR_SIZE 0x00008006 /* hidden option for connectx */ #define SCTP_CONNECT_X 0x00008007 /* hidden option for connectx_delayed, part of sendx */ #define SCTP_CONNECT_X_DELAYED 0x00008008 #define SCTP_CONNECT_X_COMPLETE 0x00008009 /* hidden socket option based sctp_peeloff */ #define SCTP_PEELOFF 0x0000800a /* the real worker for sctp_getaddrlen() */ #define SCTP_GET_ADDR_LEN 0x0000800b /* Debug things that need to be purged */ #define SCTP_SET_INITIAL_DBG_SEQ 0x00009f00 /* JRS - Supported congestion control modules for pluggable * congestion control */ /* Standard TCP Congestion Control */ #define SCTP_CC_RFC2581 0x00000000 /* High Speed TCP Congestion Control (Floyd) */ #define SCTP_CC_HSTCP 0x00000001 /* HTCP Congestion Control */ #define SCTP_CC_HTCP 0x00000002 /* RTCC Congestion Control - RFC2581 plus */ #define SCTP_CC_RTCC 0x00000003 #define SCTP_CC_OPT_RTCC_SETMODE 0x00002000 #define SCTP_CC_OPT_USE_DCCC_ECN 0x00002001 #define SCTP_CC_OPT_STEADY_STEP 0x00002002 #define SCTP_CMT_OFF 0 #define SCTP_CMT_BASE 1 #define SCTP_CMT_RPV1 2 #define SCTP_CMT_RPV2 3 #define SCTP_CMT_MPTCP 4 #define SCTP_CMT_MAX SCTP_CMT_MPTCP /* RS - Supported stream scheduling modules for pluggable * stream scheduling */ /* Default simple round-robin */ #define SCTP_SS_DEFAULT 0x00000000 /* Real round-robin */ #define SCTP_SS_ROUND_ROBIN 0x00000001 /* Real round-robin per packet */ #define SCTP_SS_ROUND_ROBIN_PACKET 0x00000002 /* Priority */ #define SCTP_SS_PRIORITY 0x00000003 /* Fair Bandwidth */ #define SCTP_SS_FAIR_BANDWITH 0x00000004 /* First-come, first-serve */ #define SCTP_SS_FIRST_COME 0x00000005 /* fragment interleave constants * setting must be one of these or * EINVAL returned. */ #define SCTP_FRAG_LEVEL_0 0x00000000 #define SCTP_FRAG_LEVEL_1 0x00000001 #define SCTP_FRAG_LEVEL_2 0x00000002 /* * user state values */ #define SCTP_CLOSED 0x0000 #define SCTP_BOUND 0x1000 #define SCTP_LISTEN 0x2000 #define SCTP_COOKIE_WAIT 0x0002 #define SCTP_COOKIE_ECHOED 0x0004 #define SCTP_ESTABLISHED 0x0008 #define SCTP_SHUTDOWN_SENT 0x0010 #define SCTP_SHUTDOWN_RECEIVED 0x0020 #define SCTP_SHUTDOWN_ACK_SENT 0x0040 #define SCTP_SHUTDOWN_PENDING 0x0080 /* * SCTP operational error codes (user visible) */ #define SCTP_CAUSE_NO_ERROR 0x0000 #define SCTP_CAUSE_INVALID_STREAM 0x0001 #define SCTP_CAUSE_MISSING_PARAM 0x0002 #define SCTP_CAUSE_STALE_COOKIE 0x0003 #define SCTP_CAUSE_OUT_OF_RESC 0x0004 #define SCTP_CAUSE_UNRESOLVABLE_ADDR 0x0005 #define SCTP_CAUSE_UNRECOG_CHUNK 0x0006 #define SCTP_CAUSE_INVALID_PARAM 0x0007 #define SCTP_CAUSE_UNRECOG_PARAM 0x0008 #define SCTP_CAUSE_NO_USER_DATA 0x0009 #define SCTP_CAUSE_COOKIE_IN_SHUTDOWN 0x000a #define SCTP_CAUSE_RESTART_W_NEWADDR 0x000b #define SCTP_CAUSE_USER_INITIATED_ABT 0x000c #define SCTP_CAUSE_PROTOCOL_VIOLATION 0x000d /* Error causes from RFC5061 */ #define SCTP_CAUSE_DELETING_LAST_ADDR 0x00a0 #define SCTP_CAUSE_RESOURCE_SHORTAGE 0x00a1 #define SCTP_CAUSE_DELETING_SRC_ADDR 0x00a2 #define SCTP_CAUSE_ILLEGAL_ASCONF_ACK 0x00a3 #define SCTP_CAUSE_REQUEST_REFUSED 0x00a4 /* Error causes from nat-draft */ #define SCTP_CAUSE_NAT_COLLIDING_STATE 0x00b0 #define SCTP_CAUSE_NAT_MISSING_STATE 0x00b1 /* Error causes from RFC4895 */ #define SCTP_CAUSE_UNSUPPORTED_HMACID 0x0105 /* * error cause parameters (user visible) */ struct sctp_gen_error_cause { uint16_t code; uint16_t length; uint8_t info[]; } SCTP_PACKED; struct sctp_error_cause { uint16_t code; uint16_t length; /* optional cause-specific info may follow */ } SCTP_PACKED; struct sctp_error_invalid_stream { struct sctp_error_cause cause; /* code=SCTP_CAUSE_INVALID_STREAM */ uint16_t stream_id; /* stream id of the DATA in error */ uint16_t reserved; } SCTP_PACKED; struct sctp_error_missing_param { struct sctp_error_cause cause; /* code=SCTP_CAUSE_MISSING_PARAM */ uint32_t num_missing_params; /* number of missing parameters */ uint16_t type[]; } SCTP_PACKED; struct sctp_error_stale_cookie { struct sctp_error_cause cause; /* code=SCTP_CAUSE_STALE_COOKIE */ uint32_t stale_time; /* time in usec of staleness */ } SCTP_PACKED; struct sctp_error_out_of_resource { struct sctp_error_cause cause; /* code=SCTP_CAUSE_OUT_OF_RESOURCES */ } SCTP_PACKED; struct sctp_error_unresolv_addr { struct sctp_error_cause cause; /* code=SCTP_CAUSE_UNRESOLVABLE_ADDR */ } SCTP_PACKED; struct sctp_error_unrecognized_chunk { struct sctp_error_cause cause; /* code=SCTP_CAUSE_UNRECOG_CHUNK */ struct sctp_chunkhdr ch;/* header from chunk in error */ } SCTP_PACKED; struct sctp_error_no_user_data { struct sctp_error_cause cause; /* code=SCTP_CAUSE_NO_USER_DATA */ uint32_t tsn; /* TSN of the empty data chunk */ } SCTP_PACKED; struct sctp_error_auth_invalid_hmac { struct sctp_error_cause cause; /* code=SCTP_CAUSE_UNSUPPORTED_HMACID */ uint16_t hmac_id; } SCTP_PACKED; /* * Main SCTP chunk types we place these here so natd and f/w's in user land * can find them. */ /************0x00 series ***********/ #define SCTP_DATA 0x00 #define SCTP_INITIATION 0x01 #define SCTP_INITIATION_ACK 0x02 #define SCTP_SELECTIVE_ACK 0x03 #define SCTP_HEARTBEAT_REQUEST 0x04 #define SCTP_HEARTBEAT_ACK 0x05 #define SCTP_ABORT_ASSOCIATION 0x06 #define SCTP_SHUTDOWN 0x07 #define SCTP_SHUTDOWN_ACK 0x08 #define SCTP_OPERATION_ERROR 0x09 #define SCTP_COOKIE_ECHO 0x0a #define SCTP_COOKIE_ACK 0x0b #define SCTP_ECN_ECHO 0x0c #define SCTP_ECN_CWR 0x0d #define SCTP_SHUTDOWN_COMPLETE 0x0e /* RFC4895 */ #define SCTP_AUTHENTICATION 0x0f /* EY nr_sack chunk id*/ #define SCTP_NR_SELECTIVE_ACK 0x10 /************0x40 series ***********/ +#define SCTP_IDATA 0x40 /************0x80 series ***********/ /* RFC5061 */ #define SCTP_ASCONF_ACK 0x80 /* draft-ietf-stewart-pktdrpsctp */ #define SCTP_PACKET_DROPPED 0x81 /* draft-ietf-stewart-strreset-xxx */ #define SCTP_STREAM_RESET 0x82 /* RFC4820 */ #define SCTP_PAD_CHUNK 0x84 /************0xc0 series ***********/ /* RFC3758 */ #define SCTP_FORWARD_CUM_TSN 0xc0 /* RFC5061 */ #define SCTP_ASCONF 0xc1 - +#define SCTP_IFORWARD_CUM_TSN 0xc2 /* ABORT and SHUTDOWN COMPLETE FLAG */ #define SCTP_HAD_NO_TCB 0x01 /* Packet dropped flags */ #define SCTP_FROM_MIDDLE_BOX SCTP_HAD_NO_TCB #define SCTP_BADCRC 0x02 #define SCTP_PACKET_TRUNCATED 0x04 /* Flag for ECN -CWR */ #define SCTP_CWR_REDUCE_OVERRIDE 0x01 #define SCTP_CWR_IN_SAME_WINDOW 0x02 #define SCTP_SAT_NETWORK_MIN 400 /* min ms for RTT to set satellite * time */ #define SCTP_SAT_NETWORK_BURST_INCR 2 /* how many times to multiply maxburst * in sat */ /* Data Chuck Specific Flags */ #define SCTP_DATA_FRAG_MASK 0x03 #define SCTP_DATA_MIDDLE_FRAG 0x00 #define SCTP_DATA_LAST_FRAG 0x01 #define SCTP_DATA_FIRST_FRAG 0x02 #define SCTP_DATA_NOT_FRAG 0x03 #define SCTP_DATA_UNORDERED 0x04 #define SCTP_DATA_SACK_IMMEDIATELY 0x08 /* ECN Nonce: SACK Chunk Specific Flags */ #define SCTP_SACK_NONCE_SUM 0x01 /* CMT DAC algorithm SACK flag */ #define SCTP_SACK_CMT_DAC 0x80 /* * PCB flags (in sctp_flags bitmask). * Note the features and flags are meant * for use by netstat. */ #define SCTP_PCB_FLAGS_UDPTYPE 0x00000001 #define SCTP_PCB_FLAGS_TCPTYPE 0x00000002 #define SCTP_PCB_FLAGS_BOUNDALL 0x00000004 #define SCTP_PCB_FLAGS_ACCEPTING 0x00000008 #define SCTP_PCB_FLAGS_UNBOUND 0x00000010 #define SCTP_PCB_FLAGS_CLOSE_IP 0x00040000 #define SCTP_PCB_FLAGS_WAS_CONNECTED 0x00080000 #define SCTP_PCB_FLAGS_WAS_ABORTED 0x00100000 /* TCP model support */ #define SCTP_PCB_FLAGS_CONNECTED 0x00200000 #define SCTP_PCB_FLAGS_IN_TCPPOOL 0x00400000 #define SCTP_PCB_FLAGS_DONT_WAKE 0x00800000 #define SCTP_PCB_FLAGS_WAKEOUTPUT 0x01000000 #define SCTP_PCB_FLAGS_WAKEINPUT 0x02000000 #define SCTP_PCB_FLAGS_BOUND_V6 0x04000000 #define SCTP_PCB_FLAGS_BLOCKING_IO 0x08000000 #define SCTP_PCB_FLAGS_SOCKET_GONE 0x10000000 #define SCTP_PCB_FLAGS_SOCKET_ALLGONE 0x20000000 #define SCTP_PCB_FLAGS_SOCKET_CANT_READ 0x40000000 /* flags to copy to new PCB */ #define SCTP_PCB_COPY_FLAGS (SCTP_PCB_FLAGS_BOUNDALL|\ SCTP_PCB_FLAGS_WAKEINPUT|\ SCTP_PCB_FLAGS_BOUND_V6) /* * PCB Features (in sctp_features bitmask) */ #define SCTP_PCB_FLAGS_DO_NOT_PMTUD 0x0000000000000001 #define SCTP_PCB_FLAGS_EXT_RCVINFO 0x0000000000000002 /* deprecated */ #define SCTP_PCB_FLAGS_DONOT_HEARTBEAT 0x0000000000000004 #define SCTP_PCB_FLAGS_FRAG_INTERLEAVE 0x0000000000000008 #define SCTP_PCB_FLAGS_INTERLEAVE_STRMS 0x0000000000000010 #define SCTP_PCB_FLAGS_DO_ASCONF 0x0000000000000020 #define SCTP_PCB_FLAGS_AUTO_ASCONF 0x0000000000000040 #define SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE 0x0000000000000080 /* socket options */ #define SCTP_PCB_FLAGS_NODELAY 0x0000000000000100 #define SCTP_PCB_FLAGS_AUTOCLOSE 0x0000000000000200 #define SCTP_PCB_FLAGS_RECVDATAIOEVNT 0x0000000000000400 /* deprecated */ #define SCTP_PCB_FLAGS_RECVASSOCEVNT 0x0000000000000800 #define SCTP_PCB_FLAGS_RECVPADDREVNT 0x0000000000001000 #define SCTP_PCB_FLAGS_RECVPEERERR 0x0000000000002000 #define SCTP_PCB_FLAGS_RECVSENDFAILEVNT 0x0000000000004000 /* deprecated */ #define SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT 0x0000000000008000 #define SCTP_PCB_FLAGS_ADAPTATIONEVNT 0x0000000000010000 #define SCTP_PCB_FLAGS_PDAPIEVNT 0x0000000000020000 #define SCTP_PCB_FLAGS_AUTHEVNT 0x0000000000040000 #define SCTP_PCB_FLAGS_STREAM_RESETEVNT 0x0000000000080000 #define SCTP_PCB_FLAGS_NO_FRAGMENT 0x0000000000100000 #define SCTP_PCB_FLAGS_EXPLICIT_EOR 0x0000000000400000 #define SCTP_PCB_FLAGS_NEEDS_MAPPED_V4 0x0000000000800000 #define SCTP_PCB_FLAGS_MULTIPLE_ASCONFS 0x0000000001000000 #define SCTP_PCB_FLAGS_PORTREUSE 0x0000000002000000 #define SCTP_PCB_FLAGS_DRYEVNT 0x0000000004000000 #define SCTP_PCB_FLAGS_RECVRCVINFO 0x0000000008000000 #define SCTP_PCB_FLAGS_RECVNXTINFO 0x0000000010000000 #define SCTP_PCB_FLAGS_ASSOC_RESETEVNT 0x0000000020000000 #define SCTP_PCB_FLAGS_STREAM_CHANGEEVNT 0x0000000040000000 #define SCTP_PCB_FLAGS_RECVNSENDFAILEVNT 0x0000000080000000 /*- * mobility_features parameters (by micchie).Note * these features are applied against the * sctp_mobility_features flags.. not the sctp_features * flags. */ #define SCTP_MOBILITY_BASE 0x00000001 #define SCTP_MOBILITY_FASTHANDOFF 0x00000002 #define SCTP_MOBILITY_PRIM_DELETED 0x00000004 #define SCTP_SMALLEST_PMTU 512 /* smallest pmtu allowed when disabling PMTU * discovery */ #undef SCTP_PACKED #include /* This dictates the size of the packet * collection buffer. This only applies * if SCTP_PACKET_LOGGING is enabled in * your config. */ #define SCTP_PACKET_LOG_SIZE 65536 /* Maximum delays and such a user can set for options that * take ms. */ #define SCTP_MAX_SACK_DELAY 500 /* per RFC4960 */ #define SCTP_MAX_HB_INTERVAL 14400000 /* 4 hours in ms */ #define SCTP_MAX_COOKIE_LIFE 3600000 /* 1 hour in ms */ /* Types of logging/KTR tracing that can be enabled via the * sysctl net.inet.sctp.sctp_logging. You must also enable * SUBSYS tracing. * Note that you must have the SCTP option in the kernel * to enable these as well. */ #define SCTP_BLK_LOGGING_ENABLE 0x00000001 #define SCTP_CWND_MONITOR_ENABLE 0x00000002 #define SCTP_CWND_LOGGING_ENABLE 0x00000004 #define SCTP_FLIGHT_LOGGING_ENABLE 0x00000020 #define SCTP_FR_LOGGING_ENABLE 0x00000040 #define SCTP_LOCK_LOGGING_ENABLE 0x00000080 #define SCTP_MAP_LOGGING_ENABLE 0x00000100 #define SCTP_MBCNT_LOGGING_ENABLE 0x00000200 #define SCTP_MBUF_LOGGING_ENABLE 0x00000400 #define SCTP_NAGLE_LOGGING_ENABLE 0x00000800 #define SCTP_RECV_RWND_LOGGING_ENABLE 0x00001000 #define SCTP_RTTVAR_LOGGING_ENABLE 0x00002000 #define SCTP_SACK_LOGGING_ENABLE 0x00004000 #define SCTP_SACK_RWND_LOGGING_ENABLE 0x00008000 #define SCTP_SB_LOGGING_ENABLE 0x00010000 #define SCTP_STR_LOGGING_ENABLE 0x00020000 #define SCTP_WAKE_LOGGING_ENABLE 0x00040000 #define SCTP_LOG_MAXBURST_ENABLE 0x00080000 #define SCTP_LOG_RWND_ENABLE 0x00100000 #define SCTP_LOG_SACK_ARRIVALS_ENABLE 0x00200000 #define SCTP_LTRACE_CHUNK_ENABLE 0x00400000 #define SCTP_LTRACE_ERROR_ENABLE 0x00800000 #define SCTP_LAST_PACKET_TRACING 0x01000000 #define SCTP_THRESHOLD_LOGGING 0x02000000 #define SCTP_LOG_AT_SEND_2_SCTP 0x04000000 #define SCTP_LOG_AT_SEND_2_OUTQ 0x08000000 #define SCTP_LOG_TRY_ADVANCE 0x10000000 #endif /* !_NETINET_SCTP_H_ */ Index: head/sys/netinet/sctp_constants.h =================================================================== --- head/sys/netinet/sctp_constants.h (revision 297661) +++ head/sys/netinet/sctp_constants.h (revision 297662) @@ -1,1035 +1,1042 @@ /*- * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved. * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * a) Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * b) Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the distribution. * * c) Neither the name of Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #ifndef _NETINET_SCTP_CONSTANTS_H_ #define _NETINET_SCTP_CONSTANTS_H_ /* IANA assigned port number for SCTP over UDP encapsulation */ #define SCTP_OVER_UDP_TUNNELING_PORT 9899 /* Number of packets to get before sack sent by default */ #define SCTP_DEFAULT_SACK_FREQ 2 /* Address limit - This variable is calculated * based on an 65535 byte max ip packet. We take out 100 bytes * for the cookie, 40 bytes for a v6 header and 32 * bytes for the init structure. A second init structure * for the init-ack and then finally a third one for the * imbedded init. This yeilds 100+40+(3 * 32) = 236 bytes. * This leaves 65299 bytes for addresses. We throw out the 299 bytes. * Now whatever we send in the INIT() we need to allow to get back in the * INIT-ACK plus all the values from INIT and INIT-ACK * listed in the cookie. Plus we need some overhead for * maybe copied parameters in the COOKIE. If we * allow 1080 addresses, and each side has 1080 V6 addresses * that will be 21600 bytes. In the INIT-ACK we will * see the INIT-ACK 21600 + 43200 in the cookie. This leaves * about 500 bytes slack for misc things in the cookie. */ #define SCTP_ADDRESS_LIMIT 1080 /* We need at least 2k of space for us, inits * larger than that lets abort. */ #define SCTP_LARGEST_INIT_ACCEPTED (65535 - 2048) /* Largest length of a chunk */ #define SCTP_MAX_CHUNK_LENGTH 0xffff /* Largest length of an error cause */ #define SCTP_MAX_CAUSE_LENGTH 0xffff /* Number of addresses where we just skip the counting */ #define SCTP_COUNT_LIMIT 40 #define SCTP_ZERO_COPY_TICK_DELAY (((100 * hz) + 999) / 1000) #define SCTP_ZERO_COPY_SENDQ_TICK_DELAY (((100 * hz) + 999) / 1000) /* Number of ticks to delay before running * iterator on an address change. */ #define SCTP_ADDRESS_TICK_DELAY 2 #define SCTP_VERSION_STRING "KAME-BSD 1.1" /* #define SCTP_AUDITING_ENABLED 1 used for debug/auditing */ #define SCTP_AUDIT_SIZE 256 #define SCTP_KTRHEAD_NAME "sctp_iterator" #define SCTP_KTHREAD_PAGES 0 #define SCTP_MCORE_NAME "sctp_core_worker" /* If you support Multi-VRF how big to * make the initial array of VRF's to. */ #define SCTP_DEFAULT_VRF_SIZE 4 /* constants for rto calc */ #define sctp_align_safe_nocopy 0 #define sctp_align_unsafe_makecopy 1 /* JRS - Values defined for the HTCP algorithm */ #define ALPHA_BASE (1<<7) /* 1.0 with shift << 7 */ #define BETA_MIN (1<<6) /* 0.5 with shift << 7 */ #define BETA_MAX 102 /* 0.8 with shift << 7 */ /* Places that CWND log can happen from */ #define SCTP_CWND_LOG_FROM_FR 1 #define SCTP_CWND_LOG_FROM_RTX 2 #define SCTP_CWND_LOG_FROM_BRST 3 #define SCTP_CWND_LOG_FROM_SS 4 #define SCTP_CWND_LOG_FROM_CA 5 #define SCTP_CWND_LOG_FROM_SAT 6 #define SCTP_BLOCK_LOG_INTO_BLK 7 #define SCTP_BLOCK_LOG_OUTOF_BLK 8 #define SCTP_BLOCK_LOG_CHECK 9 #define SCTP_STR_LOG_FROM_INTO_STRD 10 #define SCTP_STR_LOG_FROM_IMMED_DEL 11 #define SCTP_STR_LOG_FROM_INSERT_HD 12 #define SCTP_STR_LOG_FROM_INSERT_MD 13 #define SCTP_STR_LOG_FROM_INSERT_TL 14 #define SCTP_STR_LOG_FROM_MARK_TSN 15 #define SCTP_STR_LOG_FROM_EXPRS_DEL 16 #define SCTP_FR_LOG_BIGGEST_TSNS 17 #define SCTP_FR_LOG_STRIKE_TEST 18 #define SCTP_FR_LOG_STRIKE_CHUNK 19 #define SCTP_FR_T3_TIMEOUT 20 #define SCTP_MAP_PREPARE_SLIDE 21 #define SCTP_MAP_SLIDE_FROM 22 #define SCTP_MAP_SLIDE_RESULT 23 #define SCTP_MAP_SLIDE_CLEARED 24 #define SCTP_MAP_SLIDE_NONE 25 #define SCTP_FR_T3_MARK_TIME 26 #define SCTP_FR_T3_MARKED 27 #define SCTP_FR_T3_STOPPED 28 #define SCTP_FR_MARKED 30 #define SCTP_CWND_LOG_NOADV_SS 31 #define SCTP_CWND_LOG_NOADV_CA 32 #define SCTP_MAX_BURST_APPLIED 33 #define SCTP_MAX_IFP_APPLIED 34 #define SCTP_MAX_BURST_ERROR_STOP 35 #define SCTP_INCREASE_PEER_RWND 36 #define SCTP_DECREASE_PEER_RWND 37 #define SCTP_SET_PEER_RWND_VIA_SACK 38 #define SCTP_LOG_MBCNT_INCREASE 39 #define SCTP_LOG_MBCNT_DECREASE 40 #define SCTP_LOG_MBCNT_CHKSET 41 #define SCTP_LOG_NEW_SACK 42 #define SCTP_LOG_TSN_ACKED 43 #define SCTP_LOG_TSN_REVOKED 44 #define SCTP_LOG_LOCK_TCB 45 #define SCTP_LOG_LOCK_INP 46 #define SCTP_LOG_LOCK_SOCK 47 #define SCTP_LOG_LOCK_SOCKBUF_R 48 #define SCTP_LOG_LOCK_SOCKBUF_S 49 #define SCTP_LOG_LOCK_CREATE 50 #define SCTP_LOG_INITIAL_RTT 51 #define SCTP_LOG_RTTVAR 52 #define SCTP_LOG_SBALLOC 53 #define SCTP_LOG_SBFREE 54 #define SCTP_LOG_SBRESULT 55 #define SCTP_FR_DUPED 56 #define SCTP_FR_MARKED_EARLY 57 #define SCTP_FR_CWND_REPORT 58 #define SCTP_FR_CWND_REPORT_START 59 #define SCTP_FR_CWND_REPORT_STOP 60 #define SCTP_CWND_LOG_FROM_SEND 61 #define SCTP_CWND_INITIALIZATION 62 #define SCTP_CWND_LOG_FROM_T3 63 #define SCTP_CWND_LOG_FROM_SACK 64 #define SCTP_CWND_LOG_NO_CUMACK 65 #define SCTP_CWND_LOG_FROM_RESEND 66 #define SCTP_FR_LOG_CHECK_STRIKE 67 #define SCTP_SEND_NOW_COMPLETES 68 #define SCTP_CWND_LOG_FILL_OUTQ_CALLED 69 #define SCTP_CWND_LOG_FILL_OUTQ_FILLS 70 #define SCTP_LOG_FREE_SENT 71 #define SCTP_NAGLE_APPLIED 72 #define SCTP_NAGLE_SKIPPED 73 #define SCTP_WAKESND_FROM_SACK 74 #define SCTP_WAKESND_FROM_FWDTSN 75 #define SCTP_NOWAKE_FROM_SACK 76 #define SCTP_CWNDLOG_PRESEND 77 #define SCTP_CWNDLOG_ENDSEND 78 #define SCTP_AT_END_OF_SACK 79 #define SCTP_REASON_FOR_SC 80 #define SCTP_BLOCK_LOG_INTO_BLKA 81 #define SCTP_ENTER_USER_RECV 82 #define SCTP_USER_RECV_SACKS 83 #define SCTP_SORECV_BLOCKSA 84 #define SCTP_SORECV_BLOCKSB 85 #define SCTP_SORECV_DONE 86 #define SCTP_SACK_RWND_UPDATE 87 #define SCTP_SORECV_ENTER 88 #define SCTP_SORECV_ENTERPL 89 #define SCTP_MBUF_INPUT 90 #define SCTP_MBUF_IALLOC 91 #define SCTP_MBUF_IFREE 92 #define SCTP_MBUF_ICOPY 93 #define SCTP_MBUF_SPLIT 94 #define SCTP_SORCV_FREECTL 95 #define SCTP_SORCV_DOESCPY 96 #define SCTP_SORCV_DOESLCK 97 #define SCTP_SORCV_DOESADJ 98 #define SCTP_SORCV_BOTWHILE 99 #define SCTP_SORCV_PASSBF 100 #define SCTP_SORCV_ADJD 101 #define SCTP_UNKNOWN_MAX 102 #define SCTP_RANDY_STUFF 103 #define SCTP_RANDY_STUFF1 104 #define SCTP_STRMOUT_LOG_ASSIGN 105 #define SCTP_STRMOUT_LOG_SEND 106 #define SCTP_FLIGHT_LOG_DOWN_CA 107 #define SCTP_FLIGHT_LOG_UP 108 #define SCTP_FLIGHT_LOG_DOWN_GAP 109 #define SCTP_FLIGHT_LOG_DOWN_RSND 110 #define SCTP_FLIGHT_LOG_UP_RSND 111 #define SCTP_FLIGHT_LOG_DOWN_RSND_TO 112 #define SCTP_FLIGHT_LOG_DOWN_WP 113 #define SCTP_FLIGHT_LOG_UP_REVOKE 114 #define SCTP_FLIGHT_LOG_DOWN_PDRP 115 #define SCTP_FLIGHT_LOG_DOWN_PMTU 116 #define SCTP_SACK_LOG_NORMAL 117 #define SCTP_SACK_LOG_EXPRESS 118 #define SCTP_MAP_TSN_ENTERS 119 #define SCTP_THRESHOLD_CLEAR 120 #define SCTP_THRESHOLD_INCR 121 #define SCTP_FLIGHT_LOG_DWN_WP_FWD 122 #define SCTP_FWD_TSN_CHECK 123 #define SCTP_LOG_MAX_TYPES 124 /* * To turn on various logging, you must first enable 'options KTR' and * you might want to bump the entires 'options KTR_ENTRIES=80000'. * To get something to log you define one of the logging defines. * (see LINT). * * This gets the compile in place, but you still need to turn the * logging flag on too in the sysctl (see in sctp.h). */ #define SCTP_LOG_EVENT_UNKNOWN 0 #define SCTP_LOG_EVENT_CWND 1 #define SCTP_LOG_EVENT_BLOCK 2 #define SCTP_LOG_EVENT_STRM 3 #define SCTP_LOG_EVENT_FR 4 #define SCTP_LOG_EVENT_MAP 5 #define SCTP_LOG_EVENT_MAXBURST 6 #define SCTP_LOG_EVENT_RWND 7 #define SCTP_LOG_EVENT_MBCNT 8 #define SCTP_LOG_EVENT_SACK 9 #define SCTP_LOG_LOCK_EVENT 10 #define SCTP_LOG_EVENT_RTT 11 #define SCTP_LOG_EVENT_SB 12 #define SCTP_LOG_EVENT_NAGLE 13 #define SCTP_LOG_EVENT_WAKE 14 #define SCTP_LOG_MISC_EVENT 15 #define SCTP_LOG_EVENT_CLOSE 16 #define SCTP_LOG_EVENT_MBUF 17 #define SCTP_LOG_CHUNK_PROC 18 #define SCTP_LOG_ERROR_RET 19 #define SCTP_LOG_MAX_EVENT 20 #define SCTP_LOCK_UNKNOWN 2 /* number of associations by default for zone allocation */ #define SCTP_MAX_NUM_OF_ASOC 40000 /* how many addresses per assoc remote and local */ #define SCTP_SCALE_FOR_ADDR 2 /* default MULTIPLE_ASCONF mode enable(1)/disable(0) value (sysctl) */ #define SCTP_DEFAULT_MULTIPLE_ASCONFS 0 /* * Theshold for rwnd updates, we have to read (sb_hiwat >> * SCTP_RWND_HIWAT_SHIFT) before we will look to see if we need to send a * window update sack. When we look, we compare the last rwnd we sent vs the * current rwnd. It too must be greater than this value. Using 3 divdes the * hiwat by 8, so for 200k rwnd we need to read 24k. For a 64k rwnd we need * to read 8k. This seems about right.. I hope :-D.. we do set a * min of a MTU on it so if the rwnd is real small we will insist * on a full MTU of 1500 bytes. */ #define SCTP_RWND_HIWAT_SHIFT 3 /* How much of the rwnd must the * message be taking up to start partial delivery. * We calculate this by shifing the hi_water (recv_win) * left the following .. set to 1, when a message holds * 1/2 the rwnd. If we set it to 2 when a message holds * 1/4 the rwnd...etc.. */ #define SCTP_PARTIAL_DELIVERY_SHIFT 1 /* * default HMAC for cookies, etc... use one of the AUTH HMAC id's * SCTP_HMAC is the HMAC_ID to use * SCTP_SIGNATURE_SIZE is the digest length */ #define SCTP_HMAC SCTP_AUTH_HMAC_ID_SHA1 #define SCTP_SIGNATURE_SIZE SCTP_AUTH_DIGEST_LEN_SHA1 #define SCTP_SIGNATURE_ALOC_SIZE SCTP_SIGNATURE_SIZE /* * the SCTP protocol signature this includes the version number encoded in * the last 4 bits of the signature. */ #define PROTO_SIGNATURE_A 0x30000000 #define SCTP_VERSION_NUMBER 0x3 #define MAX_TSN 0xffffffff /* how many executions every N tick's */ #define SCTP_ITERATOR_MAX_AT_ONCE 20 /* number of clock ticks between iterator executions */ #define SCTP_ITERATOR_TICKS 1 /* * option: If you comment out the following you will receive the old behavior * of obeying cwnd for the fast retransmit algorithm. With this defined a FR * happens right away with-out waiting for the flightsize to drop below the * cwnd value (which is reduced by the FR to 1/2 the inflight packets). */ #define SCTP_IGNORE_CWND_ON_FR 1 /* * Adds implementors guide behavior to only use newest highest update in SACK * gap ack's to figure out if you need to stroke a chunk for FR. */ #define SCTP_NO_FR_UNLESS_SEGMENT_SMALLER 1 /* default max I can burst out after a fast retransmit, 0 disables it */ #define SCTP_DEF_MAX_BURST 4 #define SCTP_DEF_HBMAX_BURST 4 #define SCTP_DEF_FRMAX_BURST 4 /* RTO calculation flag to say if it * is safe to determine local lan or not. */ #define SCTP_RTT_FROM_NON_DATA 0 #define SCTP_RTT_FROM_DATA 1 /* IP hdr (20/40) + 12+2+2 (enet) + sctp common 12 */ #define SCTP_FIRST_MBUF_RESV 68 /* Packet transmit states in the sent field */ #define SCTP_DATAGRAM_UNSENT 0 #define SCTP_DATAGRAM_SENT 1 #define SCTP_DATAGRAM_RESEND1 2 /* not used (in code, but may * hit this value) */ #define SCTP_DATAGRAM_RESEND2 3 /* not used (in code, but may * hit this value) */ #define SCTP_DATAGRAM_RESEND 4 #define SCTP_DATAGRAM_ACKED 10010 #define SCTP_DATAGRAM_MARKED 20010 #define SCTP_FORWARD_TSN_SKIP 30010 #define SCTP_DATAGRAM_NR_ACKED 40010 /* chunk output send from locations */ #define SCTP_OUTPUT_FROM_USR_SEND 0 #define SCTP_OUTPUT_FROM_T3 1 #define SCTP_OUTPUT_FROM_INPUT_ERROR 2 #define SCTP_OUTPUT_FROM_CONTROL_PROC 3 #define SCTP_OUTPUT_FROM_SACK_TMR 4 #define SCTP_OUTPUT_FROM_SHUT_TMR 5 #define SCTP_OUTPUT_FROM_HB_TMR 6 #define SCTP_OUTPUT_FROM_SHUT_ACK_TMR 7 #define SCTP_OUTPUT_FROM_ASCONF_TMR 8 #define SCTP_OUTPUT_FROM_STRRST_TMR 9 #define SCTP_OUTPUT_FROM_AUTOCLOSE_TMR 10 #define SCTP_OUTPUT_FROM_EARLY_FR_TMR 11 #define SCTP_OUTPUT_FROM_STRRST_REQ 12 #define SCTP_OUTPUT_FROM_USR_RCVD 13 #define SCTP_OUTPUT_FROM_COOKIE_ACK 14 #define SCTP_OUTPUT_FROM_DRAIN 15 #define SCTP_OUTPUT_FROM_CLOSING 16 #define SCTP_OUTPUT_FROM_SOCKOPT 17 /* SCTP chunk types are moved sctp.h for application (NAT, FW) use */ /* align to 32-bit sizes */ #define SCTP_SIZE32(x) ((((x) + 3) >> 2) << 2) -#define IS_SCTP_CONTROL(a) ((a)->chunk_type != SCTP_DATA) -#define IS_SCTP_DATA(a) ((a)->chunk_type == SCTP_DATA) +#define IS_SCTP_CONTROL(a) (((a)->chunk_type != SCTP_DATA) && ((a)->chunk_type != SCTP_IDATA)) +#define IS_SCTP_DATA(a) (((a)->chunk_type == SCTP_DATA) || ((a)->chunk_type == SCTP_IDATA)) /* SCTP parameter types */ /*************0x0000 series*************/ #define SCTP_HEARTBEAT_INFO 0x0001 #define SCTP_IPV4_ADDRESS 0x0005 #define SCTP_IPV6_ADDRESS 0x0006 #define SCTP_STATE_COOKIE 0x0007 #define SCTP_UNRECOG_PARAM 0x0008 #define SCTP_COOKIE_PRESERVE 0x0009 #define SCTP_HOSTNAME_ADDRESS 0x000b #define SCTP_SUPPORTED_ADDRTYPE 0x000c /* draft-ietf-stewart-tsvwg-strreset-xxx */ #define SCTP_STR_RESET_OUT_REQUEST 0x000d #define SCTP_STR_RESET_IN_REQUEST 0x000e #define SCTP_STR_RESET_TSN_REQUEST 0x000f #define SCTP_STR_RESET_RESPONSE 0x0010 #define SCTP_STR_RESET_ADD_OUT_STREAMS 0x0011 #define SCTP_STR_RESET_ADD_IN_STREAMS 0x0012 #define SCTP_MAX_RESET_PARAMS 2 #define SCTP_STREAM_RESET_TSN_DELTA 0x1000 /*************0x4000 series*************/ /*************0x8000 series*************/ #define SCTP_ECN_CAPABLE 0x8000 /* draft-ietf-tsvwg-auth-xxx */ #define SCTP_RANDOM 0x8002 #define SCTP_CHUNK_LIST 0x8003 #define SCTP_HMAC_LIST 0x8004 /* * draft-ietf-tsvwg-addip-sctp-xx param=0x8008 len=0xNNNN Byte | Byte | Byte * | Byte Byte | Byte ... * * Where each byte is a chunk type extension supported. For example, to support * all chunks one would have (in hex): * * 80 01 00 09 C0 C1 80 81 82 00 00 00 * * Has the parameter. C0 = PR-SCTP (RFC3758) C1, 80 = ASCONF (addip draft) 81 * = Packet Drop 82 = Stream Reset 83 = Authentication */ #define SCTP_SUPPORTED_CHUNK_EXT 0x8008 /*************0xC000 series*************/ #define SCTP_PRSCTP_SUPPORTED 0xc000 /* draft-ietf-tsvwg-addip-sctp */ #define SCTP_ADD_IP_ADDRESS 0xc001 #define SCTP_DEL_IP_ADDRESS 0xc002 #define SCTP_ERROR_CAUSE_IND 0xc003 #define SCTP_SET_PRIM_ADDR 0xc004 #define SCTP_SUCCESS_REPORT 0xc005 #define SCTP_ULP_ADAPTATION 0xc006 /* behave-nat-draft */ #define SCTP_HAS_NAT_SUPPORT 0xc007 #define SCTP_NAT_VTAGS 0xc008 /* bits for TOS field */ #define SCTP_ECT0_BIT 0x02 #define SCTP_ECT1_BIT 0x01 #define SCTP_CE_BITS 0x03 /* below turns off above */ #define SCTP_FLEXIBLE_ADDRESS 0x20 #define SCTP_NO_HEARTBEAT 0x40 /* mask to get sticky */ #define SCTP_STICKY_OPTIONS_MASK 0x0c /* * SCTP states for internal state machine */ #define SCTP_STATE_EMPTY 0x0000 #define SCTP_STATE_INUSE 0x0001 #define SCTP_STATE_COOKIE_WAIT 0x0002 #define SCTP_STATE_COOKIE_ECHOED 0x0004 #define SCTP_STATE_OPEN 0x0008 #define SCTP_STATE_SHUTDOWN_SENT 0x0010 #define SCTP_STATE_SHUTDOWN_RECEIVED 0x0020 #define SCTP_STATE_SHUTDOWN_ACK_SENT 0x0040 #define SCTP_STATE_SHUTDOWN_PENDING 0x0080 #define SCTP_STATE_CLOSED_SOCKET 0x0100 #define SCTP_STATE_ABOUT_TO_BE_FREED 0x0200 #define SCTP_STATE_PARTIAL_MSG_LEFT 0x0400 #define SCTP_STATE_WAS_ABORTED 0x0800 #define SCTP_STATE_IN_ACCEPT_QUEUE 0x1000 #define SCTP_STATE_MASK 0x007f #define SCTP_GET_STATE(asoc) ((asoc)->state & SCTP_STATE_MASK) #define SCTP_SET_STATE(asoc, newstate) ((asoc)->state = ((asoc)->state & ~SCTP_STATE_MASK) | newstate) #define SCTP_CLEAR_SUBSTATE(asoc, substate) ((asoc)->state &= ~substate) #define SCTP_ADD_SUBSTATE(asoc, substate) ((asoc)->state |= substate) /* SCTP reachability state for each address */ #define SCTP_ADDR_REACHABLE 0x001 #define SCTP_ADDR_NO_PMTUD 0x002 #define SCTP_ADDR_NOHB 0x004 #define SCTP_ADDR_BEING_DELETED 0x008 #define SCTP_ADDR_NOT_IN_ASSOC 0x010 #define SCTP_ADDR_OUT_OF_SCOPE 0x080 #define SCTP_ADDR_UNCONFIRMED 0x200 #define SCTP_ADDR_REQ_PRIMARY 0x400 /* JRS 5/13/07 - Added potentially failed state for CMT PF */ #define SCTP_ADDR_PF 0x800 /* bound address types (e.g. valid address types to allow) */ #define SCTP_BOUND_V6 0x01 #define SCTP_BOUND_V4 0x02 /* * what is the default number of mbufs in a chain I allow before switching to * a cluster */ #define SCTP_DEFAULT_MBUFS_IN_CHAIN 5 /* How long a cookie lives in milli-seconds */ #define SCTP_DEFAULT_COOKIE_LIFE 60000 /* Maximum the mapping array will grow to (TSN mapping array) */ #define SCTP_MAPPING_ARRAY 512 /* size of the inital malloc on the mapping array */ #define SCTP_INITIAL_MAPPING_ARRAY 16 /* how much we grow the mapping array each call */ #define SCTP_MAPPING_ARRAY_INCR 32 /* * Here we define the timer types used by the implementation as arguments in * the set/get timer type calls. */ #define SCTP_TIMER_INIT 0 #define SCTP_TIMER_RECV 1 #define SCTP_TIMER_SEND 2 #define SCTP_TIMER_HEARTBEAT 3 #define SCTP_TIMER_PMTU 4 #define SCTP_TIMER_MAXSHUTDOWN 5 #define SCTP_TIMER_SIGNATURE 6 /* * number of timer types in the base SCTP structure used in the set/get and * has the base default. */ #define SCTP_NUM_TMRS 7 /* timer types */ #define SCTP_TIMER_TYPE_NONE 0 #define SCTP_TIMER_TYPE_SEND 1 #define SCTP_TIMER_TYPE_INIT 2 #define SCTP_TIMER_TYPE_RECV 3 #define SCTP_TIMER_TYPE_SHUTDOWN 4 #define SCTP_TIMER_TYPE_HEARTBEAT 5 #define SCTP_TIMER_TYPE_COOKIE 6 #define SCTP_TIMER_TYPE_NEWCOOKIE 7 #define SCTP_TIMER_TYPE_PATHMTURAISE 8 #define SCTP_TIMER_TYPE_SHUTDOWNACK 9 #define SCTP_TIMER_TYPE_ASCONF 10 #define SCTP_TIMER_TYPE_SHUTDOWNGUARD 11 #define SCTP_TIMER_TYPE_AUTOCLOSE 12 #define SCTP_TIMER_TYPE_EVENTWAKE 13 #define SCTP_TIMER_TYPE_STRRESET 14 #define SCTP_TIMER_TYPE_INPKILL 15 #define SCTP_TIMER_TYPE_ASOCKILL 16 #define SCTP_TIMER_TYPE_ADDR_WQ 17 #define SCTP_TIMER_TYPE_ZERO_COPY 18 #define SCTP_TIMER_TYPE_ZCOPY_SENDQ 19 #define SCTP_TIMER_TYPE_PRIM_DELETED 20 /* add new timers here - and increment LAST */ #define SCTP_TIMER_TYPE_LAST 21 #define SCTP_IS_TIMER_TYPE_VALID(t) (((t) > SCTP_TIMER_TYPE_NONE) && \ ((t) < SCTP_TIMER_TYPE_LAST)) /* max number of TSN's dup'd that I will hold */ #define SCTP_MAX_DUP_TSNS 20 /* * Here we define the types used when setting the retry amounts. */ /* How many drop re-attempts we make on INIT/COOKIE-ECHO */ #define SCTP_RETRY_DROPPED_THRESH 4 /* * Maxmium number of chunks a single association can have on it. Note that * this is a squishy number since the count can run over this if the user * sends a large message down .. the fragmented chunks don't count until * AFTER the message is on queue.. it would be the next send that blocks * things. This number will get tuned up at boot in the sctp_init and use the * number of clusters as a base. This way high bandwidth environments will * not get impacted by the lower bandwidth sending a bunch of 1 byte chunks */ #define SCTP_ASOC_MAX_CHUNKS_ON_QUEUE 512 /* The conversion from time to ticks and vice versa is done by rounding * upwards. This way we can test in the code the time to be positive and * know that this corresponds to a positive number of ticks. */ #define MSEC_TO_TICKS(x) ((hz == 1000) ? x : ((((x) * hz) + 999) / 1000)) #define TICKS_TO_MSEC(x) ((hz == 1000) ? x : ((((x) * 1000) + (hz - 1)) / hz)) #define SEC_TO_TICKS(x) ((x) * hz) #define TICKS_TO_SEC(x) (((x) + (hz - 1)) / hz) /* * Basically the minimum amount of time before I do a early FR. Making this * value to low will cause duplicate retransmissions. */ #define SCTP_MINFR_MSEC_TIMER 250 /* The floor this value is allowed to fall to when starting a timer. */ #define SCTP_MINFR_MSEC_FLOOR 20 /* init timer def = 1 sec */ #define SCTP_INIT_SEC 1 /* send timer def = 1 seconds */ #define SCTP_SEND_SEC 1 /* recv timer def = 200ms */ #define SCTP_RECV_MSEC 200 /* 30 seconds + RTO (in ms) */ #define SCTP_HB_DEFAULT_MSEC 30000 /* * This is how long a secret lives, NOT how long a cookie lives how many * ticks the current secret will live. */ #define SCTP_DEFAULT_SECRET_LIFE_SEC 3600 #define SCTP_RTO_UPPER_BOUND (60000) /* 60 sec in ms */ #define SCTP_RTO_LOWER_BOUND (1000) /* 1 sec is ms */ #define SCTP_RTO_INITIAL (3000) /* 3 sec in ms */ #define SCTP_INP_KILL_TIMEOUT 20/* number of ms to retry kill of inpcb */ #define SCTP_ASOC_KILL_TIMEOUT 10 /* number of ms to retry kill of inpcb */ #define SCTP_DEF_MAX_INIT 8 #define SCTP_DEF_MAX_SEND 10 #define SCTP_DEF_MAX_PATH_RTX 5 #define SCTP_DEF_PATH_PF_THRESHOLD SCTP_DEF_MAX_PATH_RTX #define SCTP_DEF_PMTU_RAISE_SEC 600 /* 10 min between raise attempts */ /* How many streams I request initally by default */ #define SCTP_OSTREAM_INITIAL 10 #define SCTP_ISTREAM_INITIAL 2048 /* * How many smallest_mtu's need to increase before a window update sack is * sent (should be a power of 2). */ /* Send window update (incr * this > hiwat). Should be a power of 2 */ #define SCTP_MINIMAL_RWND (4096) /* minimal rwnd */ #define SCTP_ADDRMAX 16 /* SCTP DEBUG Switch parameters */ #define SCTP_DEBUG_TIMER1 0x00000001 #define SCTP_DEBUG_TIMER2 0x00000002 /* unused */ #define SCTP_DEBUG_TIMER3 0x00000004 /* unused */ #define SCTP_DEBUG_TIMER4 0x00000008 #define SCTP_DEBUG_OUTPUT1 0x00000010 #define SCTP_DEBUG_OUTPUT2 0x00000020 #define SCTP_DEBUG_OUTPUT3 0x00000040 #define SCTP_DEBUG_OUTPUT4 0x00000080 #define SCTP_DEBUG_UTIL1 0x00000100 #define SCTP_DEBUG_UTIL2 0x00000200 /* unused */ #define SCTP_DEBUG_AUTH1 0x00000400 #define SCTP_DEBUG_AUTH2 0x00000800 /* unused */ #define SCTP_DEBUG_INPUT1 0x00001000 #define SCTP_DEBUG_INPUT2 0x00002000 #define SCTP_DEBUG_INPUT3 0x00004000 #define SCTP_DEBUG_INPUT4 0x00008000 /* unused */ #define SCTP_DEBUG_ASCONF1 0x00010000 #define SCTP_DEBUG_ASCONF2 0x00020000 #define SCTP_DEBUG_OUTPUT5 0x00040000 /* unused */ #define SCTP_DEBUG_XXX 0x00080000 /* unused */ #define SCTP_DEBUG_PCB1 0x00100000 #define SCTP_DEBUG_PCB2 0x00200000 /* unused */ #define SCTP_DEBUG_PCB3 0x00400000 #define SCTP_DEBUG_PCB4 0x00800000 #define SCTP_DEBUG_INDATA1 0x01000000 #define SCTP_DEBUG_INDATA2 0x02000000 /* unused */ #define SCTP_DEBUG_INDATA3 0x04000000 /* unused */ #define SCTP_DEBUG_CRCOFFLOAD 0x08000000 /* unused */ #define SCTP_DEBUG_USRREQ1 0x10000000 /* unused */ #define SCTP_DEBUG_USRREQ2 0x20000000 /* unused */ #define SCTP_DEBUG_PEEL1 0x40000000 #define SCTP_DEBUG_XXXXX 0x80000000 /* unused */ #define SCTP_DEBUG_ALL 0x7ff3ffff #define SCTP_DEBUG_NOISY 0x00040000 /* What sender needs to see to avoid SWS or we consider peers rwnd 0 */ #define SCTP_SWS_SENDER_DEF 1420 /* * SWS is scaled to the sb_hiwat of the socket. A value of 2 is hiwat/4, 1 * would be hiwat/2 etc. */ /* What receiver needs to see in sockbuf or we tell peer its 1 */ #define SCTP_SWS_RECEIVER_DEF 3000 #define SCTP_INITIAL_CWND 4380 #define SCTP_DEFAULT_MTU 1500 /* emergency default MTU */ /* amount peer is obligated to have in rwnd or I will abort */ #define SCTP_MIN_RWND 1500 #define SCTP_DEFAULT_MAXSEGMENT 65535 #define SCTP_CHUNK_BUFFER_SIZE 512 #define SCTP_PARAM_BUFFER_SIZE 512 /* small chunk store for looking at chunk_list in auth */ #define SCTP_SMALL_CHUNK_STORE 260 #define SCTP_HOW_MANY_SECRETS 2 /* how many secrets I keep */ #define SCTP_NUMBER_OF_SECRETS 8 /* or 8 * 4 = 32 octets */ #define SCTP_SECRET_SIZE 32 /* number of octets in a 256 bits */ /* * SCTP upper layer notifications */ #define SCTP_NOTIFY_ASSOC_UP 1 #define SCTP_NOTIFY_ASSOC_DOWN 2 #define SCTP_NOTIFY_INTERFACE_DOWN 3 #define SCTP_NOTIFY_INTERFACE_UP 4 #define SCTP_NOTIFY_SENT_DG_FAIL 5 #define SCTP_NOTIFY_UNSENT_DG_FAIL 6 #define SCTP_NOTIFY_SPECIAL_SP_FAIL 7 #define SCTP_NOTIFY_ASSOC_LOC_ABORTED 8 #define SCTP_NOTIFY_ASSOC_REM_ABORTED 9 #define SCTP_NOTIFY_ASSOC_RESTART 10 #define SCTP_NOTIFY_PEER_SHUTDOWN 11 #define SCTP_NOTIFY_ASCONF_ADD_IP 12 #define SCTP_NOTIFY_ASCONF_DELETE_IP 13 #define SCTP_NOTIFY_ASCONF_SET_PRIMARY 14 #define SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION 15 #define SCTP_NOTIFY_INTERFACE_CONFIRMED 16 #define SCTP_NOTIFY_STR_RESET_RECV 17 #define SCTP_NOTIFY_STR_RESET_SEND 18 #define SCTP_NOTIFY_STR_RESET_FAILED_OUT 19 #define SCTP_NOTIFY_STR_RESET_FAILED_IN 20 #define SCTP_NOTIFY_STR_RESET_DENIED_OUT 21 #define SCTP_NOTIFY_STR_RESET_DENIED_IN 22 #define SCTP_NOTIFY_AUTH_NEW_KEY 23 #define SCTP_NOTIFY_AUTH_FREE_KEY 24 #define SCTP_NOTIFY_NO_PEER_AUTH 25 #define SCTP_NOTIFY_SENDER_DRY 26 #define SCTP_NOTIFY_REMOTE_ERROR 27 /* This is the value for messages that are NOT completely * copied down where we will start to split the message. * So, with our default, we split only if the piece we * want to take will fill up a full MTU (assuming * a 1500 byte MTU). */ #define SCTP_DEFAULT_SPLIT_POINT_MIN 2904 /* Maximum length of diagnostic information in error causes */ #define SCTP_DIAG_INFO_LEN 64 /* ABORT CODES and other tell-tale location * codes are generated by adding the below * to the instance id. */ /* File defines */ #define SCTP_FROM_SCTP_INPUT 0x10000000 #define SCTP_FROM_SCTP_PCB 0x20000000 #define SCTP_FROM_SCTP_INDATA 0x30000000 #define SCTP_FROM_SCTP_TIMER 0x40000000 #define SCTP_FROM_SCTP_USRREQ 0x50000000 #define SCTP_FROM_SCTPUTIL 0x60000000 #define SCTP_FROM_SCTP6_USRREQ 0x70000000 #define SCTP_FROM_SCTP_ASCONF 0x80000000 #define SCTP_FROM_SCTP_OUTPUT 0x90000000 #define SCTP_FROM_SCTP_PEELOFF 0xa0000000 #define SCTP_FROM_SCTP_PANDA 0xb0000000 #define SCTP_FROM_SCTP_SYSCTL 0xc0000000 #define SCTP_FROM_SCTP_CC_FUNCTIONS 0xd0000000 /* Location ID's */ #define SCTP_LOC_1 0x00000001 #define SCTP_LOC_2 0x00000002 #define SCTP_LOC_3 0x00000003 #define SCTP_LOC_4 0x00000004 #define SCTP_LOC_5 0x00000005 #define SCTP_LOC_6 0x00000006 #define SCTP_LOC_7 0x00000007 #define SCTP_LOC_8 0x00000008 #define SCTP_LOC_9 0x00000009 #define SCTP_LOC_10 0x0000000a #define SCTP_LOC_11 0x0000000b #define SCTP_LOC_12 0x0000000c #define SCTP_LOC_13 0x0000000d #define SCTP_LOC_14 0x0000000e #define SCTP_LOC_15 0x0000000f #define SCTP_LOC_16 0x00000010 #define SCTP_LOC_17 0x00000011 #define SCTP_LOC_18 0x00000012 #define SCTP_LOC_19 0x00000013 #define SCTP_LOC_20 0x00000014 #define SCTP_LOC_21 0x00000015 #define SCTP_LOC_22 0x00000016 #define SCTP_LOC_23 0x00000017 #define SCTP_LOC_24 0x00000018 #define SCTP_LOC_25 0x00000019 #define SCTP_LOC_26 0x0000001a #define SCTP_LOC_27 0x0000001b #define SCTP_LOC_28 0x0000001c #define SCTP_LOC_29 0x0000001d #define SCTP_LOC_30 0x0000001e #define SCTP_LOC_31 0x0000001f #define SCTP_LOC_32 0x00000020 #define SCTP_LOC_33 0x00000021 #define SCTP_LOC_34 0x00000022 #define SCTP_LOC_35 0x00000023 /* Free assoc codes */ #define SCTP_NORMAL_PROC 0 #define SCTP_PCBFREE_NOFORCE 1 #define SCTP_PCBFREE_FORCE 2 /* From codes for adding addresses */ #define SCTP_ADDR_IS_CONFIRMED 8 #define SCTP_ADDR_DYNAMIC_ADDED 6 #define SCTP_IN_COOKIE_PROC 100 #define SCTP_ALLOC_ASOC 1 #define SCTP_LOAD_ADDR_2 2 #define SCTP_LOAD_ADDR_3 3 #define SCTP_LOAD_ADDR_4 4 #define SCTP_LOAD_ADDR_5 5 #define SCTP_DONOT_SETSCOPE 0 #define SCTP_DO_SETSCOPE 1 /* This value determines the default for when * we try to add more on the send queue., if * there is room. This prevents us from cycling * into the copy_resume routine to often if * we have not got enough space to add a decent * enough size message. Note that if we have enough * space to complete the message copy we will always * add to the message, no matter what the size. Its * only when we reach the point that we have some left * to add, there is only room for part of it that we * will use this threshold. Its also a sysctl. */ #define SCTP_DEFAULT_ADD_MORE 1452 #ifndef SCTP_PCBHASHSIZE /* default number of association hash buckets in each endpoint */ #define SCTP_PCBHASHSIZE 256 #endif #ifndef SCTP_TCBHASHSIZE #define SCTP_TCBHASHSIZE 1024 #endif #ifndef SCTP_CHUNKQUEUE_SCALE #define SCTP_CHUNKQUEUE_SCALE 10 #endif /* clock variance is 1 ms */ #define SCTP_CLOCK_GRANULARITY 1 #define IP_HDR_SIZE 40 /* we use the size of a IP6 header here this * detracts a small amount for ipv4 but it * simplifies the ipv6 addition */ /* Argument magic number for sctp_inpcb_free() */ /* third argument */ #define SCTP_CALLED_DIRECTLY_NOCMPSET 0 #define SCTP_CALLED_AFTER_CMPSET_OFCLOSE 1 #define SCTP_CALLED_FROM_INPKILL_TIMER 2 /* second argument */ #define SCTP_FREE_SHOULD_USE_ABORT 1 #define SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE 0 #ifndef IPPROTO_SCTP #define IPPROTO_SCTP 132 /* the Official IANA number :-) */ #endif /* !IPPROTO_SCTP */ #define SCTP_MAX_DATA_BUNDLING 256 /* modular comparison */ /* See RFC 1982 for details. */ -#define SCTP_SSN_GT(a, b) (((a < b) && ((uint16_t)(b - a) > (1U<<15))) || \ - ((a > b) && ((uint16_t)(a - b) < (1U<<15)))) -#define SCTP_SSN_GE(a, b) (SCTP_SSN_GT(a, b) || (a == b)) -#define SCTP_TSN_GT(a, b) (((a < b) && ((uint32_t)(b - a) > (1U<<31))) || \ - ((a > b) && ((uint32_t)(a - b) < (1U<<31)))) -#define SCTP_TSN_GE(a, b) (SCTP_TSN_GT(a, b) || (a == b)) +#define SCTP_UINT16_GT(a, b) (((a < b) && ((uint16_t)(b - a) > (1U<<15))) || \ + ((a > b) && ((uint16_t)(a - b) < (1U<<15)))) +#define SCTP_UINT16_GE(a, b) (SCTP_UINT16_GT(a, b) || (a == b)) +#define SCTP_UINT32_GT(a, b) (((a < b) && ((uint32_t)(b - a) > (1U<<31))) || \ + ((a > b) && ((uint32_t)(a - b) < (1U<<31)))) +#define SCTP_UINT32_GE(a, b) (SCTP_UINT32_GT(a, b) || (a == b)) + +#define SCTP_SSN_GT(a, b) SCTP_UINT16_GT(a, b) +#define SCTP_SSN_GE(a, b) SCTP_UINT16_GE(a, b) +#define SCTP_TSN_GT(a, b) SCTP_UINT32_GT(a, b) +#define SCTP_TSN_GE(a, b) SCTP_UINT32_GE(a, b) +#define SCTP_MSGID_GT(o, a, b) ((o == 1) ? SCTP_UINT16_GT((uint16_t)a, (uint16_t)b) : SCTP_UINT32_GT(a, b)) +#define SCTP_MSGID_GE(o, a, b) ((o == 1) ? SCTP_UINT16_GE((uint16_t)a, (uint16_t)b) : SCTP_UINT32_GE(a, b)) /* Mapping array manipulation routines */ #define SCTP_IS_TSN_PRESENT(arry, gap) ((arry[(gap >> 3)] >> (gap & 0x07)) & 0x01) #define SCTP_SET_TSN_PRESENT(arry, gap) (arry[(gap >> 3)] |= (0x01 << ((gap & 0x07)))) #define SCTP_UNSET_TSN_PRESENT(arry, gap) (arry[(gap >> 3)] &= ((~(0x01 << ((gap & 0x07)))) & 0xff)) #define SCTP_CALC_TSN_TO_GAP(gap, tsn, mapping_tsn) do { \ if (tsn >= mapping_tsn) { \ gap = tsn - mapping_tsn; \ } else { \ gap = (MAX_TSN - mapping_tsn) + tsn + 1; \ } \ } while (0) #define SCTP_RETRAN_DONE -1 #define SCTP_RETRAN_EXIT -2 /* * This value defines the number of vtag block time wait entry's per list * element. Each entry will take 2 4 byte ints (and of course the overhead * of the next pointer as well). Using 15 as an example will yield * ((8 * * 15) + 8) or 128 bytes of overhead for each timewait block that gets * initialized. Increasing it to 31 would yeild 256 bytes per block. */ #define SCTP_NUMBER_IN_VTAG_BLOCK 15 /* * If we use the STACK option, we have an array of this size head pointers. * This array is mod'd the with the size to find which bucket and then all * entries must be searched to see if the tag is in timed wait. If so we * reject it. */ #define SCTP_STACK_VTAG_HASH_SIZE 32 /* * Number of seconds of time wait for a vtag. */ #define SCTP_TIME_WAIT 60 /* How many micro seconds is the cutoff from * local lan type rtt's */ /* * We allow 900us for the rtt. */ #define SCTP_LOCAL_LAN_RTT 900 #define SCTP_LAN_UNKNOWN 0 #define SCTP_LAN_LOCAL 1 #define SCTP_LAN_INTERNET 2 #define SCTP_SEND_BUFFER_SPLITTING 0x00000001 #define SCTP_RECV_BUFFER_SPLITTING 0x00000002 /* The system retains a cache of free chunks such to * cut down on calls the memory allocation system. There * is a per association limit of free items and a overall * system limit. If either one gets hit then the resource * stops being cached. */ #define SCTP_DEF_ASOC_RESC_LIMIT 10 #define SCTP_DEF_SYSTEM_RESC_LIMIT 1000 /*- * defines for socket lock states. * Used by __APPLE__ and SCTP_SO_LOCK_TESTING */ #define SCTP_SO_LOCKED 1 #define SCTP_SO_NOT_LOCKED 0 #define SCTP_HOLDS_LOCK 1 #define SCTP_NOT_LOCKED 0 /*- * For address locks, do we hold the lock? */ #define SCTP_ADDR_LOCKED 1 #define SCTP_ADDR_NOT_LOCKED 0 #define IN4_ISPRIVATE_ADDRESS(a) \ ((((uint8_t *)&(a)->s_addr)[0] == 10) || \ ((((uint8_t *)&(a)->s_addr)[0] == 172) && \ (((uint8_t *)&(a)->s_addr)[1] >= 16) && \ (((uint8_t *)&(a)->s_addr)[1] <= 32)) || \ ((((uint8_t *)&(a)->s_addr)[0] == 192) && \ (((uint8_t *)&(a)->s_addr)[1] == 168))) #define IN4_ISLOOPBACK_ADDRESS(a) \ (((uint8_t *)&(a)->s_addr)[0] == 127) #define IN4_ISLINKLOCAL_ADDRESS(a) \ ((((uint8_t *)&(a)->s_addr)[0] == 169) && \ (((uint8_t *)&(a)->s_addr)[1] == 254)) #if defined(_KERNEL) #define SCTP_GETTIME_TIMEVAL(x) (getmicrouptime(x)) #define SCTP_GETPTIME_TIMEVAL(x) (microuptime(x)) #endif #if defined(_KERNEL) || defined(__Userspace__) #define sctp_sowwakeup(inp, so) \ do { \ if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \ inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEOUTPUT; \ } else { \ sowwakeup(so); \ } \ } while (0) #define sctp_sowwakeup_locked(inp, so) \ do { \ if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \ SOCKBUF_UNLOCK(&((so)->so_snd)); \ inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEOUTPUT; \ } else { \ sowwakeup_locked(so); \ } \ } while (0) #define sctp_sorwakeup(inp, so) \ do { \ if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \ inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEINPUT; \ } else { \ sorwakeup(so); \ } \ } while (0) #define sctp_sorwakeup_locked(inp, so) \ do { \ if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { \ inp->sctp_flags |= SCTP_PCB_FLAGS_WAKEINPUT; \ SOCKBUF_UNLOCK(&((so)->so_rcv)); \ } else { \ sorwakeup_locked(so); \ } \ } while (0) #endif /* _KERNEL || __Userspace__ */ #endif Index: head/sys/netinet/sctp_dtrace_define.h =================================================================== --- head/sys/netinet/sctp_dtrace_define.h (revision 297661) +++ head/sys/netinet/sctp_dtrace_define.h (revision 297662) @@ -1,175 +1,175 @@ /*- * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * a) Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * b) Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the distribution. * * c) Neither the name of Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #ifndef _NETINET_SCTP_DTRACE_DEFINE_H_ #define _NETINET_SCTP_DTRACE_DEFINE_H_ #include #include SDT_PROVIDER_DEFINE(sctp); /********************************************************/ /* Cwnd probe - tracks changes in the congestion window on a netp */ /********************************************************/ /* Initial */ SDT_PROBE_DEFINE5(sctp, cwnd, net, init, - "uint32_t", /* The Vtag for this end */ - "uint32_t", /* - * The port number of the local side << 16 | port number - * of remote in network byte order. - */ - "uintptr_t", /* The pointer to the struct sctp_nets * changing */ - "int", /* The old value of the cwnd */ - "int"); /* The new value of the cwnd */ + "uint32_t", /* The Vtag for this end */ + "uint32_t", /* The port number of the local side << 16 | + * port number of remote in network byte + * order. */ + "uintptr_t", /* The pointer to the struct sctp_nets * + * changing */ + "int", /* The old value of the cwnd */ + "int"); /* The new value of the cwnd */ /* ACK-INCREASE */ SDT_PROBE_DEFINE5(sctp, cwnd, net, ack, - "uint32_t", /* The Vtag for this end */ - "uint32_t", /* - * The port number of the local side << 16 | port number - * of remote in network byte order. - */ - "uintptr_t", /* The pointer to the struct sctp_nets * changing */ - "int", /* The old value of the cwnd */ - "int"); /* The new value of the cwnd */ + "uint32_t", /* The Vtag for this end */ + "uint32_t", /* The port number of the local side << 16 | + * port number of remote in network byte + * order. */ + "uintptr_t", /* The pointer to the struct sctp_nets * + * changing */ + "int", /* The old value of the cwnd */ + "int"); /* The new value of the cwnd */ /* ACK-INCREASE */ SDT_PROBE_DEFINE5(sctp, cwnd, net, rttvar, - "uint64_t", /* The Vtag << 32 | localport << 16 | remoteport */ - "uint64_t", /* obw | nbw */ - "uint64_t", /* bwrtt | newrtt */ - "uint64_t", /* flight */ - "uint64_t"); /* (cwnd << 32) | point << 16 | retval(0/1) */ + "uint64_t", /* The Vtag << 32 | localport << 16 | + * remoteport */ + "uint64_t", /* obw | nbw */ + "uint64_t", /* bwrtt | newrtt */ + "uint64_t", /* flight */ + "uint64_t"); /* (cwnd << 32) | point << 16 | retval(0/1) */ SDT_PROBE_DEFINE5(sctp, cwnd, net, rttstep, - "uint64_t", /* The Vtag << 32 | localport << 16 | remoteport */ - "uint64_t", /* obw | nbw */ - "uint64_t", /* bwrtt | newrtt */ - "uint64_t", /* flight */ - "uint64_t"); /* (cwnd << 32) | point << 16 | retval(0/1) */ + "uint64_t", /* The Vtag << 32 | localport << 16 | + * remoteport */ + "uint64_t", /* obw | nbw */ + "uint64_t", /* bwrtt | newrtt */ + "uint64_t", /* flight */ + "uint64_t"); /* (cwnd << 32) | point << 16 | retval(0/1) */ /* FastRetransmit-DECREASE */ SDT_PROBE_DEFINE5(sctp, cwnd, net, fr, - "uint32_t", /* The Vtag for this end */ - "uint32_t", /* - * The port number of the local side << 16 | port number - * of remote in network byte order. - */ - "uintptr_t", /* The pointer to the struct sctp_nets * changing */ - "int", /* The old value of the cwnd */ - "int"); /* The new value of the cwnd */ + "uint32_t", /* The Vtag for this end */ + "uint32_t", /* The port number of the local side << 16 | + * port number of remote in network byte + * order. */ + "uintptr_t", /* The pointer to the struct sctp_nets * + * changing */ + "int", /* The old value of the cwnd */ + "int"); /* The new value of the cwnd */ /* TimeOut-DECREASE */ SDT_PROBE_DEFINE5(sctp, cwnd, net, to, - "uint32_t", /* The Vtag for this end */ - "uint32_t", /* - * The port number of the local side << 16 | port number - * of remote in network byte order. - */ - "uintptr_t", /* The pointer to the struct sctp_nets * changing */ - "int", /* The old value of the cwnd */ - "int"); /* The new value of the cwnd */ + "uint32_t", /* The Vtag for this end */ + "uint32_t", /* The port number of the local side << 16 | + * port number of remote in network byte + * order. */ + "uintptr_t", /* The pointer to the struct sctp_nets * + * changing */ + "int", /* The old value of the cwnd */ + "int"); /* The new value of the cwnd */ /* BurstLimit-DECREASE */ SDT_PROBE_DEFINE5(sctp, cwnd, net, bl, - "uint32_t", /* The Vtag for this end */ - "uint32_t", /* - * The port number of the local side << 16 | port number - * of remote in network byte order. - */ - "uintptr_t", /* The pointer to the struct sctp_nets * changing */ - "int", /* The old value of the cwnd */ - "int"); /* The new value of the cwnd */ + "uint32_t", /* The Vtag for this end */ + "uint32_t", /* The port number of the local side << 16 | + * port number of remote in network byte + * order. */ + "uintptr_t", /* The pointer to the struct sctp_nets * + * changing */ + "int", /* The old value of the cwnd */ + "int"); /* The new value of the cwnd */ /* ECN-DECREASE */ SDT_PROBE_DEFINE5(sctp, cwnd, net, ecn, - "uint32_t", /* The Vtag for this end */ - "uint32_t", /* - * The port number of the local side << 16 | port number - * of remote in network byte order. - */ - "uintptr_t", /* The pointer to the struct sctp_nets * changing */ - "int", /* The old value of the cwnd */ - "int"); /* The new value of the cwnd */ + "uint32_t", /* The Vtag for this end */ + "uint32_t", /* The port number of the local side << 16 | + * port number of remote in network byte + * order. */ + "uintptr_t", /* The pointer to the struct sctp_nets * + * changing */ + "int", /* The old value of the cwnd */ + "int"); /* The new value of the cwnd */ /* PacketDrop-DECREASE */ SDT_PROBE_DEFINE5(sctp, cwnd, net, pd, - "uint32_t", /* The Vtag for this end */ - "uint32_t", /* - * The port number of the local side << 16 | port number - * of remote in network byte order. - */ - "uintptr_t", /* The pointer to the struct sctp_nets * changing */ - "int", /* The old value of the cwnd */ - "int"); /* The new value of the cwnd */ + "uint32_t", /* The Vtag for this end */ + "uint32_t", /* The port number of the local side << 16 | + * port number of remote in network byte + * order. */ + "uintptr_t", /* The pointer to the struct sctp_nets * + * changing */ + "int", /* The old value of the cwnd */ + "int"); /* The new value of the cwnd */ /********************************************************/ /* Rwnd probe - tracks changes in the receiver window for an assoc */ /********************************************************/ SDT_PROBE_DEFINE4(sctp, rwnd, assoc, val, - "uint32_t", /* The Vtag for this end */ - "uint32_t", /* - * The port number of the local side << 16 | port number - * of remote in network byte order. - */ - "int", /* The up/down amount */ - "int"); /* The new value of the cwnd */ + "uint32_t", /* The Vtag for this end */ + "uint32_t", /* The port number of the local side << 16 | + * port number of remote in network byte + * order. */ + "int", /* The up/down amount */ + "int"); /* The new value of the cwnd */ /********************************************************/ /* flight probe - tracks changes in the flight size on a net or assoc */ /********************************************************/ SDT_PROBE_DEFINE5(sctp, flightsize, net, val, - "uint32_t", /* The Vtag for this end */ - "uint32_t", /* - * The port number of the local side << 16 | port number - * of remote in network byte order. - */ - "uintptr_t", /* The pointer to the struct sctp_nets * changing */ - "int", /* The up/down amount */ - "int"); /* The new value of the cwnd */ + "uint32_t", /* The Vtag for this end */ + "uint32_t", /* The port number of the local side << 16 | + * port number of remote in network byte + * order. */ + "uintptr_t", /* The pointer to the struct sctp_nets * + * changing */ + "int", /* The up/down amount */ + "int"); /* The new value of the cwnd */ /********************************************************/ /* The total flight version */ /********************************************************/ SDT_PROBE_DEFINE4(sctp, flightsize, assoc, val, - "uint32_t", /* The Vtag for this end */ - "uint32_t", /* - * The port number of the local side << 16 | port number - * of remote in network byte order. - */ - "int", /* The up/down amount */ - "int"); /* The new value of the cwnd */ + "uint32_t", /* The Vtag for this end */ + "uint32_t", /* The port number of the local side << 16 | + * port number of remote in network byte + * order. */ + "int", /* The up/down amount */ + "int"); /* The new value of the cwnd */ #endif Index: head/sys/netinet/sctp_header.h =================================================================== --- head/sys/netinet/sctp_header.h (revision 297661) +++ head/sys/netinet/sctp_header.h (revision 297662) @@ -1,562 +1,585 @@ /*- * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * a) Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * b) Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the distribution. * * c) Neither the name of Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #ifndef _NETINET_SCTP_HEADER_H_ #define _NETINET_SCTP_HEADER_H_ #include #include #include #define SCTP_PACKED __attribute__((packed)) /* * Parameter structures */ struct sctp_ipv4addr_param { struct sctp_paramhdr ph;/* type=SCTP_IPV4_PARAM_TYPE, len=8 */ uint32_t addr; /* IPV4 address */ } SCTP_PACKED; #define SCTP_V6_ADDR_BYTES 16 struct sctp_ipv6addr_param { struct sctp_paramhdr ph;/* type=SCTP_IPV6_PARAM_TYPE, len=20 */ uint8_t addr[SCTP_V6_ADDR_BYTES]; /* IPV6 address */ } SCTP_PACKED; /* Cookie Preservative */ struct sctp_cookie_perserve_param { struct sctp_paramhdr ph;/* type=SCTP_COOKIE_PRESERVE, len=8 */ uint32_t time; /* time in ms to extend cookie */ } SCTP_PACKED; #define SCTP_ARRAY_MIN_LEN 1 /* Host Name Address */ struct sctp_host_name_param { struct sctp_paramhdr ph;/* type=SCTP_HOSTNAME_ADDRESS */ char name[SCTP_ARRAY_MIN_LEN]; /* host name */ } SCTP_PACKED; /* * This is the maximum padded size of a s-a-p * so paramheadr + 3 address types (6 bytes) + 2 byte pad = 12 */ #define SCTP_MAX_ADDR_PARAMS_SIZE 12 /* supported address type */ struct sctp_supported_addr_param { struct sctp_paramhdr ph;/* type=SCTP_SUPPORTED_ADDRTYPE */ uint16_t addr_type[2]; /* array of supported address types */ } SCTP_PACKED; /* heartbeat info parameter */ struct sctp_heartbeat_info_param { struct sctp_paramhdr ph; uint32_t time_value_1; uint32_t time_value_2; uint32_t random_value1; uint32_t random_value2; uint8_t addr_family; uint8_t addr_len; /* make sure that this structure is 4 byte aligned */ uint8_t padding[2]; char address[SCTP_ADDRMAX]; } SCTP_PACKED; /* draft-ietf-tsvwg-prsctp */ /* PR-SCTP supported parameter */ struct sctp_prsctp_supported_param { struct sctp_paramhdr ph; } SCTP_PACKED; /* draft-ietf-tsvwg-addip-sctp */ struct sctp_asconf_paramhdr { /* an ASCONF "parameter" */ struct sctp_paramhdr ph;/* a SCTP parameter header */ uint32_t correlation_id;/* correlation id for this param */ } SCTP_PACKED; struct sctp_asconf_addr_param { /* an ASCONF address parameter */ struct sctp_asconf_paramhdr aph; /* asconf "parameter" */ struct sctp_ipv6addr_param addrp; /* max storage size */ } SCTP_PACKED; struct sctp_asconf_tag_param { /* an ASCONF NAT-Vtag parameter */ struct sctp_asconf_paramhdr aph; /* asconf "parameter" */ uint32_t local_vtag; uint32_t remote_vtag; } SCTP_PACKED; struct sctp_asconf_addrv4_param { /* an ASCONF address (v4) parameter */ struct sctp_asconf_paramhdr aph; /* asconf "parameter" */ struct sctp_ipv4addr_param addrp; /* max storage size */ } SCTP_PACKED; #define SCTP_MAX_SUPPORTED_EXT 256 struct sctp_supported_chunk_types_param { struct sctp_paramhdr ph;/* type = 0x8008 len = x */ uint8_t chunk_types[]; } SCTP_PACKED; /* * Structures for DATA chunks */ struct sctp_data { uint32_t tsn; uint16_t stream_id; uint16_t stream_sequence; uint32_t protocol_id; /* user data follows */ } SCTP_PACKED; struct sctp_data_chunk { struct sctp_chunkhdr ch; struct sctp_data dp; } SCTP_PACKED; +struct sctp_idata { + uint32_t tsn; + uint16_t stream_id; + uint16_t reserved; /* Where does the SSN go? */ + uint32_t msg_id; + union { + uint32_t protocol_id; + uint32_t fsn; /* Fragment Sequence Number */ + }; + /* user data follows */ +} SCTP_PACKED; + +struct sctp_idata_chunk { + struct sctp_chunkhdr ch; + struct sctp_idata dp; +} SCTP_PACKED; + /* * Structures for the control chunks */ /* Initiate (INIT)/Initiate Ack (INIT ACK) */ struct sctp_init { uint32_t initiate_tag; /* initiate tag */ uint32_t a_rwnd; /* a_rwnd */ uint16_t num_outbound_streams; /* OS */ uint16_t num_inbound_streams; /* MIS */ uint32_t initial_tsn; /* I-TSN */ /* optional param's follow */ } SCTP_PACKED; #define SCTP_IDENTIFICATION_SIZE 16 #define SCTP_ADDRESS_SIZE 4 #define SCTP_RESERVE_SPACE 6 /* state cookie header */ struct sctp_state_cookie { /* this is our definition... */ uint8_t identification[SCTP_IDENTIFICATION_SIZE]; /* id of who we are */ struct timeval time_entered; /* the time I built cookie */ uint32_t cookie_life; /* life I will award this cookie */ uint32_t tie_tag_my_vtag; /* my tag in old association */ uint32_t tie_tag_peer_vtag; /* peers tag in old association */ uint32_t peers_vtag; /* peers tag in INIT (for quick ref) */ uint32_t my_vtag; /* my tag in INIT-ACK (for quick ref) */ uint32_t address[SCTP_ADDRESS_SIZE]; /* 4 ints/128 bits */ uint32_t addr_type; /* address type */ uint32_t laddress[SCTP_ADDRESS_SIZE]; /* my local from address */ uint32_t laddr_type; /* my local from address type */ uint32_t scope_id; /* v6 scope id for link-locals */ uint16_t peerport; /* port address of the peer in the INIT */ uint16_t myport; /* my port address used in the INIT */ uint8_t ipv4_addr_legal;/* Are V4 addr legal? */ uint8_t ipv6_addr_legal;/* Are V6 addr legal? */ uint8_t local_scope; /* IPv6 local scope flag */ uint8_t site_scope; /* IPv6 site scope flag */ uint8_t ipv4_scope; /* IPv4 private addr scope */ uint8_t loopback_scope; /* loopback scope information */ uint8_t reserved[SCTP_RESERVE_SPACE]; /* Align to 64 bits */ /* * at the end is tacked on the INIT chunk and the INIT-ACK chunk * (minus the cookie). */ } SCTP_PACKED; /* state cookie parameter */ struct sctp_state_cookie_param { struct sctp_paramhdr ph; struct sctp_state_cookie cookie; } SCTP_PACKED; struct sctp_init_chunk { struct sctp_chunkhdr ch; struct sctp_init init; } SCTP_PACKED; struct sctp_init_msg { struct sctphdr sh; struct sctp_init_chunk msg; } SCTP_PACKED; /* ... used for both INIT and INIT ACK */ #define sctp_init_ack sctp_init #define sctp_init_ack_chunk sctp_init_chunk #define sctp_init_ack_msg sctp_init_msg /* Selective Ack (SACK) */ struct sctp_gap_ack_block { uint16_t start; /* Gap Ack block start */ uint16_t end; /* Gap Ack block end */ } SCTP_PACKED; struct sctp_sack { uint32_t cum_tsn_ack; /* cumulative TSN Ack */ uint32_t a_rwnd; /* updated a_rwnd of sender */ uint16_t num_gap_ack_blks; /* number of Gap Ack blocks */ uint16_t num_dup_tsns; /* number of duplicate TSNs */ /* struct sctp_gap_ack_block's follow */ /* uint32_t duplicate_tsn's follow */ } SCTP_PACKED; struct sctp_sack_chunk { struct sctp_chunkhdr ch; struct sctp_sack sack; } SCTP_PACKED; struct sctp_nr_sack { uint32_t cum_tsn_ack; /* cumulative TSN Ack */ uint32_t a_rwnd; /* updated a_rwnd of sender */ uint16_t num_gap_ack_blks; /* number of Gap Ack blocks */ uint16_t num_nr_gap_ack_blks; /* number of NR Gap Ack blocks */ uint16_t num_dup_tsns; /* number of duplicate TSNs */ uint16_t reserved; /* not currently used */ /* struct sctp_gap_ack_block's follow */ /* uint32_t duplicate_tsn's follow */ } SCTP_PACKED; struct sctp_nr_sack_chunk { struct sctp_chunkhdr ch; struct sctp_nr_sack nr_sack; } SCTP_PACKED; /* Heartbeat Request (HEARTBEAT) */ struct sctp_heartbeat { struct sctp_heartbeat_info_param hb_info; } SCTP_PACKED; struct sctp_heartbeat_chunk { struct sctp_chunkhdr ch; struct sctp_heartbeat heartbeat; } SCTP_PACKED; /* ... used for Heartbeat Ack (HEARTBEAT ACK) */ #define sctp_heartbeat_ack sctp_heartbeat #define sctp_heartbeat_ack_chunk sctp_heartbeat_chunk /* Abort Asssociation (ABORT) */ struct sctp_abort_chunk { struct sctp_chunkhdr ch; /* optional error cause may follow */ } SCTP_PACKED; struct sctp_abort_msg { struct sctphdr sh; struct sctp_abort_chunk msg; } SCTP_PACKED; /* Shutdown Association (SHUTDOWN) */ struct sctp_shutdown_chunk { struct sctp_chunkhdr ch; uint32_t cumulative_tsn_ack; } SCTP_PACKED; /* Shutdown Acknowledgment (SHUTDOWN ACK) */ struct sctp_shutdown_ack_chunk { struct sctp_chunkhdr ch; } SCTP_PACKED; /* Operation Error (ERROR) */ struct sctp_error_chunk { struct sctp_chunkhdr ch; /* optional error causes follow */ } SCTP_PACKED; /* Cookie Echo (COOKIE ECHO) */ struct sctp_cookie_echo_chunk { struct sctp_chunkhdr ch; struct sctp_state_cookie cookie; } SCTP_PACKED; /* Cookie Acknowledgment (COOKIE ACK) */ struct sctp_cookie_ack_chunk { struct sctp_chunkhdr ch; } SCTP_PACKED; /* Explicit Congestion Notification Echo (ECNE) */ struct old_sctp_ecne_chunk { struct sctp_chunkhdr ch; uint32_t tsn; } SCTP_PACKED; struct sctp_ecne_chunk { struct sctp_chunkhdr ch; uint32_t tsn; uint32_t num_pkts_since_cwr; } SCTP_PACKED; /* Congestion Window Reduced (CWR) */ struct sctp_cwr_chunk { struct sctp_chunkhdr ch; uint32_t tsn; } SCTP_PACKED; /* Shutdown Complete (SHUTDOWN COMPLETE) */ struct sctp_shutdown_complete_chunk { struct sctp_chunkhdr ch; } SCTP_PACKED; struct sctp_adaptation_layer_indication { struct sctp_paramhdr ph; uint32_t indication; } SCTP_PACKED; /* * draft-ietf-tsvwg-addip-sctp */ /* Address/Stream Configuration Change (ASCONF) */ struct sctp_asconf_chunk { struct sctp_chunkhdr ch; uint32_t serial_number; /* lookup address parameter (mandatory) */ /* asconf parameters follow */ } SCTP_PACKED; /* Address/Stream Configuration Acknowledge (ASCONF ACK) */ struct sctp_asconf_ack_chunk { struct sctp_chunkhdr ch; uint32_t serial_number; /* asconf parameters follow */ } SCTP_PACKED; /* draft-ietf-tsvwg-prsctp */ /* Forward Cumulative TSN (FORWARD TSN) */ struct sctp_forward_tsn_chunk { struct sctp_chunkhdr ch; uint32_t new_cumulative_tsn; /* stream/sequence pairs (sctp_strseq) follow */ } SCTP_PACKED; struct sctp_strseq { uint16_t stream; uint16_t sequence; } SCTP_PACKED; + +struct sctp_strseq_mid { + uint16_t stream; + uint16_t reserved; + uint32_t msg_id; +}; struct sctp_forward_tsn_msg { struct sctphdr sh; struct sctp_forward_tsn_chunk msg; } SCTP_PACKED; /* should be a multiple of 4 - 1 aka 3/7/11 etc. */ #define SCTP_NUM_DB_TO_VERIFY 31 struct sctp_chunk_desc { uint8_t chunk_type; uint8_t data_bytes[SCTP_NUM_DB_TO_VERIFY]; uint32_t tsn_ifany; } SCTP_PACKED; struct sctp_pktdrop_chunk { struct sctp_chunkhdr ch; uint32_t bottle_bw; uint32_t current_onq; uint16_t trunc_len; uint16_t reserved; uint8_t data[]; } SCTP_PACKED; /**********STREAM RESET STUFF ******************/ struct sctp_stream_reset_request { struct sctp_paramhdr ph; uint32_t request_seq; } SCTP_PACKED; struct sctp_stream_reset_out_request { struct sctp_paramhdr ph; uint32_t request_seq; /* monotonically increasing seq no */ uint32_t response_seq; /* if a response, the resp seq no */ uint32_t send_reset_at_tsn; /* last TSN I assigned outbound */ uint16_t list_of_streams[]; /* if not all list of streams */ } SCTP_PACKED; struct sctp_stream_reset_in_request { struct sctp_paramhdr ph; uint32_t request_seq; uint16_t list_of_streams[]; /* if not all list of streams */ } SCTP_PACKED; struct sctp_stream_reset_tsn_request { struct sctp_paramhdr ph; uint32_t request_seq; } SCTP_PACKED; struct sctp_stream_reset_response { struct sctp_paramhdr ph; uint32_t response_seq; /* if a response, the resp seq no */ uint32_t result; } SCTP_PACKED; struct sctp_stream_reset_response_tsn { struct sctp_paramhdr ph; uint32_t response_seq; /* if a response, the resp seq no */ uint32_t result; uint32_t senders_next_tsn; uint32_t receivers_next_tsn; } SCTP_PACKED; struct sctp_stream_reset_add_strm { struct sctp_paramhdr ph; uint32_t request_seq; uint16_t number_of_streams; uint16_t reserved; } SCTP_PACKED; #define SCTP_STREAM_RESET_RESULT_NOTHING_TO_DO 0x00000000 /* XXX: unused */ #define SCTP_STREAM_RESET_RESULT_PERFORMED 0x00000001 #define SCTP_STREAM_RESET_RESULT_DENIED 0x00000002 #define SCTP_STREAM_RESET_RESULT_ERR__WRONG_SSN 0x00000003 /* XXX: unused */ #define SCTP_STREAM_RESET_RESULT_ERR_IN_PROGRESS 0x00000004 #define SCTP_STREAM_RESET_RESULT_ERR_BAD_SEQNO 0x00000005 #define SCTP_STREAM_RESET_RESULT_IN_PROGRESS 0x00000006 /* XXX: unused */ /* * convience structures, note that if you are making a request for specific * streams then the request will need to be an overlay structure. */ struct sctp_stream_reset_tsn_req { struct sctp_chunkhdr ch; struct sctp_stream_reset_tsn_request sr_req; } SCTP_PACKED; struct sctp_stream_reset_resp { struct sctp_chunkhdr ch; struct sctp_stream_reset_response sr_resp; } SCTP_PACKED; /* respone only valid with a TSN request */ struct sctp_stream_reset_resp_tsn { struct sctp_chunkhdr ch; struct sctp_stream_reset_response_tsn sr_resp; } SCTP_PACKED; /****************************************************/ /* * Authenticated chunks support draft-ietf-tsvwg-sctp-auth */ /* Should we make the max be 32? */ #define SCTP_RANDOM_MAX_SIZE 256 struct sctp_auth_random { struct sctp_paramhdr ph;/* type = 0x8002 */ uint8_t random_data[]; } SCTP_PACKED; struct sctp_auth_chunk_list { struct sctp_paramhdr ph;/* type = 0x8003 */ uint8_t chunk_types[]; } SCTP_PACKED; struct sctp_auth_hmac_algo { struct sctp_paramhdr ph;/* type = 0x8004 */ uint16_t hmac_ids[]; } SCTP_PACKED; struct sctp_auth_chunk { struct sctp_chunkhdr ch; uint16_t shared_key_id; uint16_t hmac_id; uint8_t hmac[]; } SCTP_PACKED; /* * we pre-reserve enough room for a ECNE or CWR AND a SACK with no missing * pieces. If ENCE is missing we could have a couple of blocks. This way we * optimize so we MOST likely can bundle a SACK/ECN with the smallest size * data chunk I will split into. We could increase throughput slightly by * taking out these two but the 24-sack/8-CWR i.e. 32 bytes I pre-reserve I * feel is worth it for now. */ #ifndef SCTP_MAX_OVERHEAD #ifdef INET6 #define SCTP_MAX_OVERHEAD (sizeof(struct sctp_data_chunk) + \ sizeof(struct sctphdr) + \ sizeof(struct sctp_ecne_chunk) + \ sizeof(struct sctp_sack_chunk) + \ sizeof(struct ip6_hdr)) #define SCTP_MED_OVERHEAD (sizeof(struct sctp_data_chunk) + \ sizeof(struct sctphdr) + \ sizeof(struct ip6_hdr)) #define SCTP_MIN_OVERHEAD (sizeof(struct ip6_hdr) + \ sizeof(struct sctphdr)) #else #define SCTP_MAX_OVERHEAD (sizeof(struct sctp_data_chunk) + \ sizeof(struct sctphdr) + \ sizeof(struct sctp_ecne_chunk) + \ sizeof(struct sctp_sack_chunk) + \ sizeof(struct ip)) #define SCTP_MED_OVERHEAD (sizeof(struct sctp_data_chunk) + \ sizeof(struct sctphdr) + \ sizeof(struct ip)) #define SCTP_MIN_OVERHEAD (sizeof(struct ip) + \ sizeof(struct sctphdr)) #endif /* INET6 */ #endif /* !SCTP_MAX_OVERHEAD */ #define SCTP_MED_V4_OVERHEAD (sizeof(struct sctp_data_chunk) + \ sizeof(struct sctphdr) + \ sizeof(struct ip)) #define SCTP_MIN_V4_OVERHEAD (sizeof(struct ip) + \ sizeof(struct sctphdr)) #undef SCTP_PACKED #endif /* !__sctp_header_h__ */ Index: head/sys/netinet/sctp_indata.c =================================================================== --- head/sys/netinet/sctp_indata.c (revision 297661) +++ head/sys/netinet/sctp_indata.c (revision 297662) @@ -1,5341 +1,5529 @@ /*- * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * a) Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * b) Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the distribution. * * c) Neither the name of Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include +#include #include #include -#include #include +#include #include #include -#include -#include #include +#include #include - - +#include +#include +#include +#include +#include +#include /* * NOTES: On the outbound side of things I need to check the sack timer to * see if I should generate a sack into the chunk queue (if I have data to * send that is and will be sending it .. for bundling. * * The callback in sctp_usrreq.c will get called when the socket is read from. * This will cause sctp_service_queues() to get called on the top entry in * the list. */ +static void +sctp_add_chk_to_control(struct sctp_queued_to_read *control, + struct sctp_stream_in *strm, + struct sctp_tcb *stcb, + struct sctp_association *asoc, + struct sctp_tmit_chunk *chk); + void sctp_set_rwnd(struct sctp_tcb *stcb, struct sctp_association *asoc) { asoc->my_rwnd = sctp_calc_rwnd(stcb, asoc); } /* Calculate what the rwnd would be */ uint32_t sctp_calc_rwnd(struct sctp_tcb *stcb, struct sctp_association *asoc) { uint32_t calc = 0; /* * This is really set wrong with respect to a 1-2-m socket. Since * the sb_cc is the count that everyone as put up. When we re-write * sctp_soreceive then we will fix this so that ONLY this * associations data is taken into account. */ - if (stcb->sctp_socket == NULL) + if (stcb->sctp_socket == NULL) { return (calc); - + } if (stcb->asoc.sb_cc == 0 && asoc->size_on_reasm_queue == 0 && asoc->size_on_all_streams == 0) { /* Full rwnd granted */ calc = max(SCTP_SB_LIMIT_RCV(stcb->sctp_socket), SCTP_MINIMAL_RWND); return (calc); } /* get actual space */ calc = (uint32_t) sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv); - /* * take out what has NOT been put on socket queue and we yet hold * for putting up. */ calc = sctp_sbspace_sub(calc, (uint32_t) (asoc->size_on_reasm_queue + asoc->cnt_on_reasm_queue * MSIZE)); calc = sctp_sbspace_sub(calc, (uint32_t) (asoc->size_on_all_streams + asoc->cnt_on_all_streams * MSIZE)); - if (calc == 0) { /* out of space */ return (calc); } /* what is the overhead of all these rwnd's */ calc = sctp_sbspace_sub(calc, stcb->asoc.my_rwnd_control_len); /* * If the window gets too small due to ctrl-stuff, reduce it to 1, * even it is 0. SWS engaged */ if (calc < stcb->asoc.my_rwnd_control_len) { calc = 1; } return (calc); } /* * Build out our readq entry based on the incoming packet. */ struct sctp_queued_to_read * sctp_build_readq_entry(struct sctp_tcb *stcb, struct sctp_nets *net, uint32_t tsn, uint32_t ppid, uint32_t context, uint16_t stream_no, - uint16_t stream_seq, uint8_t flags, + uint32_t stream_seq, uint8_t flags, struct mbuf *dm) { struct sctp_queued_to_read *read_queue_e = NULL; sctp_alloc_a_readq(stcb, read_queue_e); if (read_queue_e == NULL) { goto failed_build; } + memset(read_queue_e, 0, sizeof(struct sctp_queued_to_read)); read_queue_e->sinfo_stream = stream_no; read_queue_e->sinfo_ssn = stream_seq; read_queue_e->sinfo_flags = (flags << 8); read_queue_e->sinfo_ppid = ppid; read_queue_e->sinfo_context = context; - read_queue_e->sinfo_timetolive = 0; read_queue_e->sinfo_tsn = tsn; read_queue_e->sinfo_cumtsn = tsn; read_queue_e->sinfo_assoc_id = sctp_get_associd(stcb); + read_queue_e->top_fsn = read_queue_e->fsn_included = 0xffffffff; + TAILQ_INIT(&read_queue_e->reasm); read_queue_e->whoFrom = net; - read_queue_e->length = 0; atomic_add_int(&net->ref_count, 1); read_queue_e->data = dm; - read_queue_e->spec_flags = 0; - read_queue_e->tail_mbuf = NULL; - read_queue_e->aux_data = NULL; read_queue_e->stcb = stcb; read_queue_e->port_from = stcb->rport; - read_queue_e->do_not_ref_stcb = 0; - read_queue_e->end_added = 0; - read_queue_e->some_taken = 0; - read_queue_e->pdapi_aborted = 0; failed_build: return (read_queue_e); } - -/* - * Build out our readq entry based on the incoming packet. - */ -static struct sctp_queued_to_read * -sctp_build_readq_entry_chk(struct sctp_tcb *stcb, - struct sctp_tmit_chunk *chk) -{ - struct sctp_queued_to_read *read_queue_e = NULL; - - sctp_alloc_a_readq(stcb, read_queue_e); - if (read_queue_e == NULL) { - goto failed_build; - } - read_queue_e->sinfo_stream = chk->rec.data.stream_number; - read_queue_e->sinfo_ssn = chk->rec.data.stream_seq; - read_queue_e->sinfo_flags = (chk->rec.data.rcv_flags << 8); - read_queue_e->sinfo_ppid = chk->rec.data.payloadtype; - read_queue_e->sinfo_context = stcb->asoc.context; - read_queue_e->sinfo_timetolive = 0; - read_queue_e->sinfo_tsn = chk->rec.data.TSN_seq; - read_queue_e->sinfo_cumtsn = chk->rec.data.TSN_seq; - read_queue_e->sinfo_assoc_id = sctp_get_associd(stcb); - read_queue_e->whoFrom = chk->whoTo; - read_queue_e->aux_data = NULL; - read_queue_e->length = 0; - atomic_add_int(&chk->whoTo->ref_count, 1); - read_queue_e->data = chk->data; - read_queue_e->tail_mbuf = NULL; - read_queue_e->stcb = stcb; - read_queue_e->port_from = stcb->rport; - read_queue_e->spec_flags = 0; - read_queue_e->do_not_ref_stcb = 0; - read_queue_e->end_added = 0; - read_queue_e->some_taken = 0; - read_queue_e->pdapi_aborted = 0; -failed_build: - return (read_queue_e); -} - - struct mbuf * sctp_build_ctl_nchunk(struct sctp_inpcb *inp, struct sctp_sndrcvinfo *sinfo) { struct sctp_extrcvinfo *seinfo; struct sctp_sndrcvinfo *outinfo; struct sctp_rcvinfo *rcvinfo; struct sctp_nxtinfo *nxtinfo; struct cmsghdr *cmh; struct mbuf *ret; int len; int use_extended; int provide_nxt; if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) && sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) && sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) { /* user does not want any ancillary data */ return (NULL); } len = 0; if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVRCVINFO)) { len += CMSG_SPACE(sizeof(struct sctp_rcvinfo)); } seinfo = (struct sctp_extrcvinfo *)sinfo; if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO) && (seinfo->serinfo_next_flags & SCTP_NEXT_MSG_AVAIL)) { provide_nxt = 1; len += CMSG_SPACE(sizeof(struct sctp_nxtinfo)); } else { provide_nxt = 0; } if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT)) { if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO)) { use_extended = 1; len += CMSG_SPACE(sizeof(struct sctp_extrcvinfo)); } else { use_extended = 0; len += CMSG_SPACE(sizeof(struct sctp_sndrcvinfo)); } } else { use_extended = 0; } ret = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA); if (ret == NULL) { /* No space */ return (ret); } SCTP_BUF_LEN(ret) = 0; /* We need a CMSG header followed by the struct */ cmh = mtod(ret, struct cmsghdr *); /* * Make sure that there is no un-initialized padding between the * cmsg header and cmsg data and after the cmsg data. */ memset(cmh, 0, len); if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVRCVINFO)) { cmh->cmsg_level = IPPROTO_SCTP; cmh->cmsg_len = CMSG_LEN(sizeof(struct sctp_rcvinfo)); cmh->cmsg_type = SCTP_RCVINFO; rcvinfo = (struct sctp_rcvinfo *)CMSG_DATA(cmh); rcvinfo->rcv_sid = sinfo->sinfo_stream; rcvinfo->rcv_ssn = sinfo->sinfo_ssn; rcvinfo->rcv_flags = sinfo->sinfo_flags; rcvinfo->rcv_ppid = sinfo->sinfo_ppid; rcvinfo->rcv_tsn = sinfo->sinfo_tsn; rcvinfo->rcv_cumtsn = sinfo->sinfo_cumtsn; rcvinfo->rcv_context = sinfo->sinfo_context; rcvinfo->rcv_assoc_id = sinfo->sinfo_assoc_id; cmh = (struct cmsghdr *)((caddr_t)cmh + CMSG_SPACE(sizeof(struct sctp_rcvinfo))); SCTP_BUF_LEN(ret) += CMSG_SPACE(sizeof(struct sctp_rcvinfo)); } if (provide_nxt) { cmh->cmsg_level = IPPROTO_SCTP; cmh->cmsg_len = CMSG_LEN(sizeof(struct sctp_nxtinfo)); cmh->cmsg_type = SCTP_NXTINFO; nxtinfo = (struct sctp_nxtinfo *)CMSG_DATA(cmh); nxtinfo->nxt_sid = seinfo->serinfo_next_stream; nxtinfo->nxt_flags = 0; if (seinfo->serinfo_next_flags & SCTP_NEXT_MSG_IS_UNORDERED) { nxtinfo->nxt_flags |= SCTP_UNORDERED; } if (seinfo->serinfo_next_flags & SCTP_NEXT_MSG_IS_NOTIFICATION) { nxtinfo->nxt_flags |= SCTP_NOTIFICATION; } if (seinfo->serinfo_next_flags & SCTP_NEXT_MSG_ISCOMPLETE) { nxtinfo->nxt_flags |= SCTP_COMPLETE; } nxtinfo->nxt_ppid = seinfo->serinfo_next_ppid; nxtinfo->nxt_length = seinfo->serinfo_next_length; nxtinfo->nxt_assoc_id = seinfo->serinfo_next_aid; cmh = (struct cmsghdr *)((caddr_t)cmh + CMSG_SPACE(sizeof(struct sctp_nxtinfo))); SCTP_BUF_LEN(ret) += CMSG_SPACE(sizeof(struct sctp_nxtinfo)); } if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT)) { cmh->cmsg_level = IPPROTO_SCTP; outinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmh); if (use_extended) { cmh->cmsg_len = CMSG_LEN(sizeof(struct sctp_extrcvinfo)); cmh->cmsg_type = SCTP_EXTRCV; memcpy(outinfo, sinfo, sizeof(struct sctp_extrcvinfo)); SCTP_BUF_LEN(ret) += CMSG_SPACE(sizeof(struct sctp_extrcvinfo)); } else { cmh->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo)); cmh->cmsg_type = SCTP_SNDRCV; *outinfo = *sinfo; SCTP_BUF_LEN(ret) += CMSG_SPACE(sizeof(struct sctp_sndrcvinfo)); } } return (ret); } static void sctp_mark_non_revokable(struct sctp_association *asoc, uint32_t tsn) { uint32_t gap, i, cumackp1; int fnd = 0; + int in_r = 0, in_nr = 0; if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) { return; } cumackp1 = asoc->cumulative_tsn + 1; if (SCTP_TSN_GT(cumackp1, tsn)) { /* * this tsn is behind the cum ack and thus we don't need to * worry about it being moved from one to the other. */ return; } SCTP_CALC_TSN_TO_GAP(gap, tsn, asoc->mapping_array_base_tsn); - if (!SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) { + in_r = SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap); + in_nr = SCTP_IS_TSN_PRESENT(asoc->nr_mapping_array, gap); + if ((in_r == 0) && (in_nr == 0)) { +#ifdef INVARIANTS + panic("Things are really messed up now"); +#else SCTP_PRINTF("gap:%x tsn:%x\n", gap, tsn); sctp_print_mapping_array(asoc); -#ifdef INVARIANTS - panic("Things are really messed up now!!"); #endif } - SCTP_SET_TSN_PRESENT(asoc->nr_mapping_array, gap); - SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap); + if (in_nr == 0) + SCTP_SET_TSN_PRESENT(asoc->nr_mapping_array, gap); + if (in_r) + SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap); if (SCTP_TSN_GT(tsn, asoc->highest_tsn_inside_nr_map)) { asoc->highest_tsn_inside_nr_map = tsn; } if (tsn == asoc->highest_tsn_inside_map) { /* We must back down to see what the new highest is */ for (i = tsn - 1; SCTP_TSN_GE(i, asoc->mapping_array_base_tsn); i--) { SCTP_CALC_TSN_TO_GAP(gap, i, asoc->mapping_array_base_tsn); if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) { asoc->highest_tsn_inside_map = i; fnd = 1; break; } } if (!fnd) { asoc->highest_tsn_inside_map = asoc->mapping_array_base_tsn - 1; } } } - -/* - * We are delivering currently from the reassembly queue. We must continue to - * deliver until we either: 1) run out of space. 2) run out of sequential - * TSN's 3) hit the SCTP_DATA_LAST_FRAG flag. - */ -static void -sctp_service_reassembly(struct sctp_tcb *stcb, struct sctp_association *asoc) +static int +sctp_place_control_in_stream(struct sctp_stream_in *strm, + struct sctp_association *asoc, + struct sctp_queued_to_read *control) { - struct sctp_tmit_chunk *chk, *nchk; - uint16_t nxt_todel; - uint16_t stream_no; - int end = 0; - int cntDel; - struct sctp_queued_to_read *control, *ctl, *nctl; + struct sctp_queued_to_read *at; + struct sctp_readhead *q; + uint8_t bits, unordered; - if (stcb == NULL) - return; - - cntDel = stream_no = 0; - if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || - (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) || - (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) { - /* socket above is long gone or going.. */ -abandon: - asoc->fragmented_delivery_inprogress = 0; - TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) { - TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next); - asoc->size_on_reasm_queue -= chk->send_size; - sctp_ucount_decr(asoc->cnt_on_reasm_queue); - /* - * Lose the data pointer, since its in the socket - * buffer - */ - if (chk->data) { - sctp_m_freem(chk->data); - chk->data = NULL; + bits = (control->sinfo_flags >> 8); + unordered = bits & SCTP_DATA_UNORDERED; + if (unordered) { + q = &strm->uno_inqueue; + if (asoc->idata_supported == 0) { + if (!TAILQ_EMPTY(q)) { + /* + * Only one stream can be here in old style + * -- abort + */ + return (-1); } - /* Now free the address and data */ - sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); - /* sa_ignore FREED_MEMORY */ + TAILQ_INSERT_TAIL(q, control, next_instrm); + control->on_strm_q = SCTP_ON_UNORDERED; + return (0); } - return; + } else { + q = &strm->inqueue; } - SCTP_TCB_LOCK_ASSERT(stcb); - TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) { - if (chk->rec.data.TSN_seq != (asoc->tsn_last_delivered + 1)) { - /* Can't deliver more :< */ - return; - } - stream_no = chk->rec.data.stream_number; - nxt_todel = asoc->strmin[stream_no].last_sequence_delivered + 1; - if (nxt_todel != chk->rec.data.stream_seq && - (chk->rec.data.rcv_flags & SCTP_DATA_UNORDERED) == 0) { - /* - * Not the next sequence to deliver in its stream OR - * unordered - */ - return; - } - if (chk->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG) { - - control = sctp_build_readq_entry_chk(stcb, chk); - if (control == NULL) { - /* out of memory? */ - return; - } - /* save it off for our future deliveries */ - stcb->asoc.control_pdapi = control; - if (chk->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) - end = 1; - else - end = 0; - sctp_mark_non_revokable(asoc, chk->rec.data.TSN_seq); - sctp_add_to_readq(stcb->sctp_ep, - stcb, control, &stcb->sctp_socket->so_rcv, end, - SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); - cntDel++; + if ((bits & SCTP_DATA_NOT_FRAG) == SCTP_DATA_NOT_FRAG) { + control->end_added = control->last_frag_seen = control->first_frag_seen = 1; + } + if (TAILQ_EMPTY(q)) { + /* Empty queue */ + TAILQ_INSERT_HEAD(q, control, next_instrm); + if (unordered) { + control->on_strm_q = SCTP_ON_UNORDERED; } else { - if (chk->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) - end = 1; - else - end = 0; - sctp_mark_non_revokable(asoc, chk->rec.data.TSN_seq); - if (sctp_append_to_readq(stcb->sctp_ep, stcb, - stcb->asoc.control_pdapi, - chk->data, end, chk->rec.data.TSN_seq, - &stcb->sctp_socket->so_rcv)) { + control->on_strm_q = SCTP_ON_ORDERED; + } + return (0); + } else { + TAILQ_FOREACH(at, q, next_instrm) { + if (SCTP_TSN_GT(at->msg_id, control->msg_id)) { /* - * something is very wrong, either - * control_pdapi is NULL, or the tail_mbuf - * is corrupt, or there is a EOM already on - * the mbuf chain. + * one in queue is bigger than the new one, + * insert before this one */ - if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { - goto abandon; + TAILQ_INSERT_BEFORE(at, control, next_instrm); + if (unordered) { + control->on_strm_q = SCTP_ON_UNORDERED; } else { -#ifdef INVARIANTS - if ((stcb->asoc.control_pdapi == NULL) || (stcb->asoc.control_pdapi->tail_mbuf == NULL)) { - panic("This should not happen control_pdapi NULL?"); + control->on_strm_q = SCTP_ON_ORDERED; + } + break; + } else if (at->msg_id == control->msg_id) { + /* + * Gak, He sent me a duplicate msg id + * number?? return -1 to abort. + */ + return (-1); + } else { + if (TAILQ_NEXT(at, next_instrm) == NULL) { + /* + * We are at the end, insert it + * after this one + */ + if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_STR_LOGGING_ENABLE) { + sctp_log_strm_del(control, at, + SCTP_STR_LOG_FROM_INSERT_TL); } - /* if we did not panic, it was a EOM */ - panic("Bad chunking ??"); -#else - if ((stcb->asoc.control_pdapi == NULL) || (stcb->asoc.control_pdapi->tail_mbuf == NULL)) { - SCTP_PRINTF("This should not happen control_pdapi NULL?\n"); + TAILQ_INSERT_AFTER(q, + at, control, next_instrm); + if (unordered) { + control->on_strm_q = SCTP_ON_UNORDERED; + } else { + control->on_strm_q = SCTP_ON_ORDERED; } - SCTP_PRINTF("Bad chunking ??\n"); - SCTP_PRINTF("Dumping re-assembly queue this will probably hose the association\n"); - -#endif - goto abandon; + break; } } - cntDel++; } - /* pull it we did it */ - TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next); - if (chk->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) { - asoc->fragmented_delivery_inprogress = 0; - if ((chk->rec.data.rcv_flags & SCTP_DATA_UNORDERED) == 0) { - asoc->strmin[stream_no].last_sequence_delivered++; - } - if ((chk->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG) == 0) { - SCTP_STAT_INCR_COUNTER64(sctps_reasmusrmsgs); - } - } else if (chk->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG) { - /* - * turn the flag back on since we just delivered - * yet another one. - */ - asoc->fragmented_delivery_inprogress = 1; - } - asoc->tsn_of_pdapi_last_delivered = chk->rec.data.TSN_seq; - asoc->last_flags_delivered = chk->rec.data.rcv_flags; - asoc->last_strm_seq_delivered = chk->rec.data.stream_seq; - asoc->last_strm_no_delivered = chk->rec.data.stream_number; + } + return (0); +} - asoc->tsn_last_delivered = chk->rec.data.TSN_seq; - asoc->size_on_reasm_queue -= chk->send_size; - sctp_ucount_decr(asoc->cnt_on_reasm_queue); - /* free up the chk */ - chk->data = NULL; - sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); +static void +sctp_abort_in_reasm(struct sctp_tcb *stcb, + struct sctp_stream_in *strm, + struct sctp_queued_to_read *control, + struct sctp_tmit_chunk *chk, + int *abort_flag, int opspot) +{ + char msg[SCTP_DIAG_INFO_LEN]; + struct mbuf *oper; - if (asoc->fragmented_delivery_inprogress == 0) { - /* - * Now lets see if we can deliver the next one on - * the stream - */ - struct sctp_stream_in *strm; + if (stcb->asoc.idata_supported) { + snprintf(msg, sizeof(msg), + "Reass %x,CF:%x,TSN=%8.8x,SID=%4.4x,FSN=%8.8x,MID:%8.8x", + opspot, + control->fsn_included, + chk->rec.data.TSN_seq, + chk->rec.data.stream_number, + chk->rec.data.fsn_num, chk->rec.data.stream_seq); + } else { + snprintf(msg, sizeof(msg), + "Reass %x, CI:%x,TSN=%8.8x,SID=%4.4x,FSN=%4.4x, SSN:%4.4x", + opspot, + control->fsn_included, + chk->rec.data.TSN_seq, + chk->rec.data.stream_number, + chk->rec.data.fsn_num, + (uint16_t) chk->rec.data.stream_seq); + } + oper = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); + sctp_m_freem(chk->data); + chk->data = NULL; + sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); + stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_1; + sctp_abort_an_association(stcb->sctp_ep, stcb, oper, SCTP_SO_NOT_LOCKED); + *abort_flag = 1; +} - strm = &asoc->strmin[stream_no]; - nxt_todel = strm->last_sequence_delivered + 1; - TAILQ_FOREACH_SAFE(ctl, &strm->inqueue, next, nctl) { - /* Deliver more if we can. */ - if (nxt_todel == ctl->sinfo_ssn) { - TAILQ_REMOVE(&strm->inqueue, ctl, next); - asoc->size_on_all_streams -= ctl->length; - sctp_ucount_decr(asoc->cnt_on_all_streams); - strm->last_sequence_delivered++; - sctp_mark_non_revokable(asoc, ctl->sinfo_tsn); - sctp_add_to_readq(stcb->sctp_ep, stcb, - ctl, - &stcb->sctp_socket->so_rcv, 1, - SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); - } else { - break; - } - nxt_todel = strm->last_sequence_delivered + 1; - } - break; - } +static void +clean_up_control(struct sctp_tcb *stcb, struct sctp_queued_to_read *control) +{ + /* + * The control could not be placed and must be cleaned. + */ + struct sctp_tmit_chunk *chk, *nchk; + + TAILQ_FOREACH_SAFE(chk, &control->reasm, sctp_next, nchk) { + TAILQ_REMOVE(&control->reasm, chk, sctp_next); + if (chk->data) + sctp_m_freem(chk->data); + chk->data = NULL; + sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); } + sctp_free_a_readq(stcb, control); } /* * Queue the chunk either right into the socket buffer if it is the next one * to go OR put it in the correct place in the delivery queue. If we do - * append to the so_buf, keep doing so until we are out of order. One big - * question still remains, what to do when the socket buffer is FULL?? + * append to the so_buf, keep doing so until we are out of order as + * long as the control's entered are non-fragmented. */ static void -sctp_queue_data_to_stream(struct sctp_tcb *stcb, struct sctp_association *asoc, - struct sctp_queued_to_read *control, int *abort_flag) +sctp_queue_data_to_stream(struct sctp_tcb *stcb, + struct sctp_stream_in *strm, + struct sctp_association *asoc, + struct sctp_queued_to_read *control, int *abort_flag, int *need_reasm) { /* * FIX-ME maybe? What happens when the ssn wraps? If we are getting * all the data in one stream this could happen quite rapidly. One * could use the TSN to keep track of things, but this scheme breaks * down in the other type of stream useage that could occur. Send a * single msg to stream 0, send 4Billion messages to stream 1, now * send a message to stream 0. You have a situation where the TSN * has wrapped but not in the stream. Is this worth worrying about * or should we just change our queue sort at the bottom to be by * TSN. * * Could it also be legal for a peer to send ssn 1 with TSN 2 and ssn 2 * with TSN 1? If the peer is doing some sort of funky TSN/SSN * assignment this could happen... and I don't see how this would be * a violation. So for now I am undecided an will leave the sort by * SSN alone. Maybe a hybred approach is the answer * */ - struct sctp_stream_in *strm; struct sctp_queued_to_read *at; int queue_needed; - uint16_t nxt_todel; + uint32_t nxt_todel; struct mbuf *op_err; char msg[SCTP_DIAG_INFO_LEN]; - queue_needed = 1; - asoc->size_on_all_streams += control->length; - sctp_ucount_incr(asoc->cnt_on_all_streams); - strm = &asoc->strmin[control->sinfo_stream]; - nxt_todel = strm->last_sequence_delivered + 1; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_STR_LOGGING_ENABLE) { sctp_log_strm_del(control, NULL, SCTP_STR_LOG_FROM_INTO_STRD); } - SCTPDBG(SCTP_DEBUG_INDATA1, - "queue to stream called for sid:%u ssn:%u tsn:%u lastdel:%u nxt:%u\n", - (uint32_t) control->sinfo_stream, (uint32_t) control->sinfo_ssn, - (uint32_t) control->sinfo_tsn, - (uint32_t) strm->last_sequence_delivered, (uint32_t) nxt_todel); - if (SCTP_SSN_GE(strm->last_sequence_delivered, control->sinfo_ssn)) { + if (SCTP_MSGID_GT((!asoc->idata_supported), strm->last_sequence_delivered, control->sinfo_ssn)) { /* The incoming sseq is behind where we last delivered? */ SCTPDBG(SCTP_DEBUG_INDATA1, "Duplicate S-SEQ:%d delivered:%d from peer, Abort association\n", control->sinfo_ssn, strm->last_sequence_delivered); protocol_error: /* * throw it in the stream so it gets cleaned up in * association destruction */ - TAILQ_INSERT_HEAD(&strm->inqueue, control, next); + TAILQ_INSERT_HEAD(&strm->inqueue, control, next_instrm); snprintf(msg, sizeof(msg), "Delivered SSN=%4.4x, got TSN=%8.8x, SID=%4.4x, SSN=%4.4x", strm->last_sequence_delivered, control->sinfo_tsn, control->sinfo_stream, control->sinfo_ssn); op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_1; + stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_2; sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); *abort_flag = 1; return; } + if ((SCTP_TSN_GE(asoc->cumulative_tsn, control->sinfo_tsn)) && (asoc->idata_supported == 0)) { + goto protocol_error; + } + queue_needed = 1; + asoc->size_on_all_streams += control->length; + sctp_ucount_incr(asoc->cnt_on_all_streams); + nxt_todel = strm->last_sequence_delivered + 1; + if (nxt_todel == control->sinfo_ssn) { #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) - struct socket *so; + struct socket *so; - so = SCTP_INP_SO(stcb->sctp_ep); - atomic_add_int(&stcb->asoc.refcnt, 1); - SCTP_TCB_UNLOCK(stcb); - SCTP_SOCKET_LOCK(so, 1); - SCTP_TCB_LOCK(stcb); - atomic_subtract_int(&stcb->asoc.refcnt, 1); - if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { - SCTP_SOCKET_UNLOCK(so, 1); - return; - } + so = SCTP_INP_SO(stcb->sctp_ep); + atomic_add_int(&stcb->asoc.refcnt, 1); + SCTP_TCB_UNLOCK(stcb); + SCTP_SOCKET_LOCK(so, 1); + SCTP_TCB_LOCK(stcb); + atomic_subtract_int(&stcb->asoc.refcnt, 1); + if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { + SCTP_SOCKET_UNLOCK(so, 1); + return; + } #endif - if (nxt_todel == control->sinfo_ssn) { /* can be delivered right away? */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_STR_LOGGING_ENABLE) { sctp_log_strm_del(control, NULL, SCTP_STR_LOG_FROM_IMMED_DEL); } /* EY it wont be queued if it could be delivered directly */ queue_needed = 0; asoc->size_on_all_streams -= control->length; sctp_ucount_decr(asoc->cnt_on_all_streams); strm->last_sequence_delivered++; - sctp_mark_non_revokable(asoc, control->sinfo_tsn); sctp_add_to_readq(stcb->sctp_ep, stcb, control, &stcb->sctp_socket->so_rcv, 1, - SCTP_READ_LOCK_NOT_HELD, SCTP_SO_LOCKED); - TAILQ_FOREACH_SAFE(control, &strm->inqueue, next, at) { + SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); + TAILQ_FOREACH_SAFE(control, &strm->inqueue, next_instrm, at) { /* all delivered */ nxt_todel = strm->last_sequence_delivered + 1; - if (nxt_todel == control->sinfo_ssn) { - TAILQ_REMOVE(&strm->inqueue, control, next); + if ((nxt_todel == control->sinfo_ssn) && + (((control->sinfo_flags >> 8) & SCTP_DATA_NOT_FRAG) == SCTP_DATA_NOT_FRAG)) { asoc->size_on_all_streams -= control->length; sctp_ucount_decr(asoc->cnt_on_all_streams); + if (control->on_strm_q == SCTP_ON_ORDERED) { + TAILQ_REMOVE(&strm->inqueue, control, next_instrm); + } else { + panic("Huh control:%p is on_strm_q:%d", + control, control->on_strm_q); + } + control->on_strm_q = 0; strm->last_sequence_delivered++; /* * We ignore the return of deliver_data here * since we always can hold the chunk on the * d-queue. And we have a finite number that * can be delivered from the strq. */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_STR_LOGGING_ENABLE) { sctp_log_strm_del(control, NULL, SCTP_STR_LOG_FROM_IMMED_DEL); } sctp_mark_non_revokable(asoc, control->sinfo_tsn); sctp_add_to_readq(stcb->sctp_ep, stcb, control, &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, - SCTP_SO_LOCKED); + SCTP_SO_NOT_LOCKED); continue; + } else if (nxt_todel == control->sinfo_ssn) { + *need_reasm = 1; } break; } +#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) + SCTP_SOCKET_UNLOCK(so, 1); +#endif } if (queue_needed) { /* * Ok, we did not deliver this guy, find the correct place * to put it on the queue. */ - if (SCTP_TSN_GE(asoc->cumulative_tsn, control->sinfo_tsn)) { -#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) - SCTP_SOCKET_UNLOCK(so, 1); -#endif - goto protocol_error; - } - if (TAILQ_EMPTY(&strm->inqueue)) { - /* Empty queue */ - if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_STR_LOGGING_ENABLE) { - sctp_log_strm_del(control, NULL, SCTP_STR_LOG_FROM_INSERT_HD); - } - TAILQ_INSERT_HEAD(&strm->inqueue, control, next); - } else { - TAILQ_FOREACH(at, &strm->inqueue, next) { - if (SCTP_SSN_GT(at->sinfo_ssn, control->sinfo_ssn)) { - /* - * one in queue is bigger than the - * new one, insert before this one - */ - if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_STR_LOGGING_ENABLE) { - sctp_log_strm_del(control, at, - SCTP_STR_LOG_FROM_INSERT_MD); - } - TAILQ_INSERT_BEFORE(at, control, next); - break; - } else if (at->sinfo_ssn == control->sinfo_ssn) { - /* - * Gak, He sent me a duplicate str - * seq number - */ - /* - * foo bar, I guess I will just free - * this new guy, should we abort - * too? FIX ME MAYBE? Or it COULD be - * that the SSN's have wrapped. - * Maybe I should compare to TSN - * somehow... sigh for now just blow - * away the chunk! - */ + if (sctp_place_control_in_stream(strm, asoc, control)) { + char msg[SCTP_DIAG_INFO_LEN]; + struct mbuf *oper; - if (control->data) - sctp_m_freem(control->data); - control->data = NULL; - asoc->size_on_all_streams -= control->length; - sctp_ucount_decr(asoc->cnt_on_all_streams); - if (control->whoFrom) { - sctp_free_remote_addr(control->whoFrom); - control->whoFrom = NULL; - } - sctp_free_a_readq(stcb, control); -#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) - SCTP_SOCKET_UNLOCK(so, 1); -#endif - return; - } else { - if (TAILQ_NEXT(at, next) == NULL) { - /* - * We are at the end, insert - * it after this one - */ - if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_STR_LOGGING_ENABLE) { - sctp_log_strm_del(control, at, - SCTP_STR_LOG_FROM_INSERT_TL); - } - TAILQ_INSERT_AFTER(&strm->inqueue, - at, control, next); - break; - } - } - } + snprintf(msg, sizeof(msg), + "Queue to str mid:%d duplicate", + control->msg_id); + clean_up_control(stcb, control); + oper = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); + stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_3; + sctp_abort_an_association(stcb->sctp_ep, stcb, oper, SCTP_SO_NOT_LOCKED); + *abort_flag = 1; } } -#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) - SCTP_SOCKET_UNLOCK(so, 1); -#endif } -/* - * Returns two things: You get the total size of the deliverable parts of the - * first fragmented message on the reassembly queue. And you get a 1 back if - * all of the message is ready or a 0 back if the message is still incomplete - */ -static int -sctp_is_all_msg_on_reasm(struct sctp_association *asoc, uint32_t * t_size) + +static void +sctp_setup_tail_pointer(struct sctp_queued_to_read *control) { - struct sctp_tmit_chunk *chk; - uint32_t tsn; + struct mbuf *m, *prev = NULL; + struct sctp_tcb *stcb; - *t_size = 0; - chk = TAILQ_FIRST(&asoc->reasmqueue); - if (chk == NULL) { - /* nothing on the queue */ - return (0); - } - if ((chk->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG) == 0) { - /* Not a first on the queue */ - return (0); - } - tsn = chk->rec.data.TSN_seq; - TAILQ_FOREACH(chk, &asoc->reasmqueue, sctp_next) { - if (tsn != chk->rec.data.TSN_seq) { - return (0); + stcb = control->stcb; + control->held_length = 0; + control->length = 0; + m = control->data; + while (m) { + if (SCTP_BUF_LEN(m) == 0) { + /* Skip mbufs with NO length */ + if (prev == NULL) { + /* First one */ + control->data = sctp_m_free(m); + m = control->data; + } else { + SCTP_BUF_NEXT(prev) = sctp_m_free(m); + m = SCTP_BUF_NEXT(prev); + } + if (m == NULL) { + control->tail_mbuf = prev; + } + continue; } - *t_size += chk->send_size; - if (chk->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) { - return (1); + prev = m; + atomic_add_int(&control->length, SCTP_BUF_LEN(m)); + if (control->on_read_q) { + /* + * On read queue so we must increment the SB stuff, + * we assume caller has done any locks of SB. + */ + sctp_sballoc(stcb, &stcb->sctp_socket->so_rcv, m); } - tsn++; + m = SCTP_BUF_NEXT(m); } - return (0); + if (prev) { + control->tail_mbuf = prev; + } } static void -sctp_deliver_reasm_check(struct sctp_tcb *stcb, struct sctp_association *asoc) +sctp_add_to_tail_pointer(struct sctp_queued_to_read *control, struct mbuf *m) { - struct sctp_tmit_chunk *chk; - uint16_t nxt_todel; - uint32_t tsize, pd_point; + struct mbuf *prev = NULL; + struct sctp_tcb *stcb; -doit_again: - chk = TAILQ_FIRST(&asoc->reasmqueue); - if (chk == NULL) { - /* Huh? */ - asoc->size_on_reasm_queue = 0; - asoc->cnt_on_reasm_queue = 0; + stcb = control->stcb; + if (stcb == NULL) { + panic("Control broken"); + } + if (control->tail_mbuf == NULL) { + /* TSNH */ + control->data = m; + sctp_setup_tail_pointer(control); return; } - if (asoc->fragmented_delivery_inprogress == 0) { - nxt_todel = - asoc->strmin[chk->rec.data.stream_number].last_sequence_delivered + 1; - if ((chk->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG) && - (nxt_todel == chk->rec.data.stream_seq || - (chk->rec.data.rcv_flags & SCTP_DATA_UNORDERED))) { - /* - * Yep the first one is here and its ok to deliver - * but should we? - */ - if (stcb->sctp_socket) { - pd_point = min(SCTP_SB_LIMIT_RCV(stcb->sctp_socket) >> SCTP_PARTIAL_DELIVERY_SHIFT, - stcb->sctp_ep->partial_delivery_point); + control->tail_mbuf->m_next = m; + while (m) { + if (SCTP_BUF_LEN(m) == 0) { + /* Skip mbufs with NO length */ + if (prev == NULL) { + /* First one */ + control->tail_mbuf->m_next = sctp_m_free(m); + m = control->tail_mbuf->m_next; } else { - pd_point = stcb->sctp_ep->partial_delivery_point; + SCTP_BUF_NEXT(prev) = sctp_m_free(m); + m = SCTP_BUF_NEXT(prev); } - if (sctp_is_all_msg_on_reasm(asoc, &tsize) || (tsize >= pd_point)) { - /* - * Yes, we setup to start reception, by - * backing down the TSN just in case we - * can't deliver. If we - */ - asoc->fragmented_delivery_inprogress = 1; - asoc->tsn_last_delivered = - chk->rec.data.TSN_seq - 1; - asoc->str_of_pdapi = - chk->rec.data.stream_number; - asoc->ssn_of_pdapi = chk->rec.data.stream_seq; - asoc->pdapi_ppid = chk->rec.data.payloadtype; - asoc->fragment_flags = chk->rec.data.rcv_flags; - sctp_service_reassembly(stcb, asoc); + if (m == NULL) { + control->tail_mbuf = prev; } + continue; } - } else { - /* - * Service re-assembly will deliver stream data queued at - * the end of fragmented delivery.. but it wont know to go - * back and call itself again... we do that here with the - * got doit_again - */ - sctp_service_reassembly(stcb, asoc); - if (asoc->fragmented_delivery_inprogress == 0) { + prev = m; + if (control->on_read_q) { /* - * finished our Fragmented delivery, could be more - * waiting? + * On read queue so we must increment the SB stuff, + * we assume caller has done any locks of SB. */ - goto doit_again; + sctp_sballoc(stcb, &stcb->sctp_socket->so_rcv, m); } + atomic_add_int(&control->length, SCTP_BUF_LEN(m)); + m = SCTP_BUF_NEXT(m); } + if (prev) { + control->tail_mbuf = prev; + } } -/* - * Dump onto the re-assembly queue, in its proper place. After dumping on the - * queue, see if anthing can be delivered. If so pull it off (or as much as - * we can. If we run out of space then we must dump what we can and set the - * appropriate flag to say we queued what we could. - */ static void -sctp_queue_data_for_reasm(struct sctp_tcb *stcb, struct sctp_association *asoc, - struct sctp_tmit_chunk *chk, int *abort_flag) +sctp_build_readq_entry_from_ctl(struct sctp_queued_to_read *nc, struct sctp_queued_to_read *control) { - struct mbuf *op_err; - char msg[SCTP_DIAG_INFO_LEN]; - uint32_t cum_ackp1, prev_tsn, post_tsn; - struct sctp_tmit_chunk *at, *prev, *next; + memset(nc, 0, sizeof(struct sctp_queued_to_read)); + nc->sinfo_stream = control->sinfo_stream; + nc->sinfo_ssn = control->sinfo_ssn; + TAILQ_INIT(&nc->reasm); + nc->top_fsn = control->top_fsn; + nc->msg_id = control->msg_id; + nc->sinfo_flags = control->sinfo_flags; + nc->sinfo_ppid = control->sinfo_ppid; + nc->sinfo_context = control->sinfo_context; + nc->fsn_included = 0xffffffff; + nc->sinfo_tsn = control->sinfo_tsn; + nc->sinfo_cumtsn = control->sinfo_cumtsn; + nc->sinfo_assoc_id = control->sinfo_assoc_id; + nc->whoFrom = control->whoFrom; + atomic_add_int(&nc->whoFrom->ref_count, 1); + nc->stcb = control->stcb; + nc->port_from = control->port_from; +} - prev = next = NULL; - cum_ackp1 = asoc->tsn_last_delivered + 1; - if (TAILQ_EMPTY(&asoc->reasmqueue)) { - /* This is the first one on the queue */ - TAILQ_INSERT_HEAD(&asoc->reasmqueue, chk, sctp_next); - /* - * we do not check for delivery of anything when only one - * fragment is here - */ - asoc->size_on_reasm_queue = chk->send_size; - sctp_ucount_incr(asoc->cnt_on_reasm_queue); - if (chk->rec.data.TSN_seq == cum_ackp1) { - if (asoc->fragmented_delivery_inprogress == 0 && - (chk->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG) != - SCTP_DATA_FIRST_FRAG) { +static int +sctp_handle_old_data(struct sctp_tcb *stcb, struct sctp_association *asoc, struct sctp_stream_in *strm, + struct sctp_queued_to_read *control, uint32_t pd_point) +{ + /* + * Special handling for the old un-ordered data chunk. All the + * chunks/TSN's go to msg_id 0. So we have to do the old style + * watching to see if we have it all. If you return one, no other + * control entries on the un-ordered queue will be looked at. In + * theory there should be no others entries in reality, unless the + * guy is sending both unordered NDATA and unordered DATA... + */ + struct sctp_tmit_chunk *chk, *lchk, *tchk; + uint32_t fsn; + struct sctp_queued_to_read *nc = NULL; + int cnt_added; + + if (control->first_frag_seen == 0) { + /* Nothing we can do, we have not seen the first piece yet */ + return (1); + } + /* Collapse any we can */ + cnt_added = 0; +restart: + fsn = control->fsn_included + 1; + /* Now what can we add? */ + TAILQ_FOREACH_SAFE(chk, &control->reasm, sctp_next, lchk) { + if (chk->rec.data.fsn_num == fsn) { + /* Ok lets add it */ + TAILQ_REMOVE(&control->reasm, chk, sctp_next); + sctp_add_chk_to_control(control, strm, stcb, asoc, chk); + fsn++; + cnt_added++; + chk = NULL; + if (control->end_added) { + /* We are done */ + if (!TAILQ_EMPTY(&control->reasm)) { + /* + * Ok we have to move anything left + * on the control queue to a new + * control. + */ + sctp_alloc_a_readq(stcb, nc); + sctp_build_readq_entry_from_ctl(nc, control); + tchk = TAILQ_FIRST(&control->reasm); + if (tchk->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG) { + TAILQ_REMOVE(&control->reasm, tchk, sctp_next); + nc->first_frag_seen = 1; + nc->fsn_included = tchk->rec.data.fsn_num; + nc->data = tchk->data; + sctp_mark_non_revokable(asoc, tchk->rec.data.TSN_seq); + tchk->data = NULL; + sctp_free_a_chunk(stcb, tchk, SCTP_SO_NOT_LOCKED); + sctp_setup_tail_pointer(nc); + tchk = TAILQ_FIRST(&control->reasm); + } + /* Spin the rest onto the queue */ + while (tchk) { + TAILQ_REMOVE(&control->reasm, tchk, sctp_next); + TAILQ_INSERT_TAIL(&nc->reasm, tchk, sctp_next); + tchk = TAILQ_FIRST(&control->reasm); + } + /* + * Now lets add it to the queue + * after removing control + */ + TAILQ_INSERT_TAIL(&strm->uno_inqueue, nc, next_instrm); + nc->on_strm_q = SCTP_ON_UNORDERED; + if (control->on_strm_q) { + TAILQ_REMOVE(&strm->uno_inqueue, control, next_instrm); + control->on_strm_q = 0; + } + } + if (control->on_read_q == 0) { + sctp_add_to_readq(stcb->sctp_ep, stcb, control, + &stcb->sctp_socket->so_rcv, control->end_added, + SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); + } + if (control->pdapi_started) { + strm->pd_api_started = 0; + control->pdapi_started = 0; + } + if (control->on_strm_q) { + TAILQ_REMOVE(&strm->uno_inqueue, control, next_instrm); + control->on_strm_q = 0; + } + sctp_wakeup_the_read_socket(stcb->sctp_ep); + if ((nc) && (nc->first_frag_seen)) { + /* + * Switch to the new guy and + * continue + */ + control = nc; + nc = NULL; + goto restart; + } + return (1); + } + } else { + /* Can't add more */ + break; + } + } + if ((control->length > pd_point) && (strm->pd_api_started == 0)) { + sctp_add_to_readq(stcb->sctp_ep, stcb, control, + &stcb->sctp_socket->so_rcv, control->end_added, + SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); + strm->pd_api_started = 1; + control->pdapi_started = 1; + sctp_wakeup_the_read_socket(stcb->sctp_ep); + return (0); + } else { + return (1); + } +} + +static void +sctp_inject_old_data_unordered(struct sctp_tcb *stcb, struct sctp_association *asoc, + struct sctp_stream_in *strm, + struct sctp_queued_to_read *control, + struct sctp_tmit_chunk *chk, + int *abort_flag) +{ + struct sctp_tmit_chunk *at; + int inserted = 0; + + /* + * Here we need to place the chunk into the control structure sorted + * in the correct order. + */ + if (chk->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG) { + /* Its the very first one. */ + SCTPDBG(SCTP_DEBUG_XXX, + "chunk is a first fsn:%d becomes fsn_included\n", + chk->rec.data.fsn_num); + if (control->first_frag_seen) { + /* + * In old un-ordered we can reassembly on one + * control multiple messages. As long as the next + * FIRST is greater then the old first (TSN i.e. FSN + * wise) + */ + struct mbuf *tdata; + uint32_t tmp; + + if (SCTP_TSN_GT(chk->rec.data.fsn_num, control->fsn_included)) { /* - * An empty queue, no delivery inprogress, - * we hit the next one and it does NOT have - * a FIRST fragment mark. + * Easy way the start of a new guy beyond + * the lowest */ - SCTPDBG(SCTP_DEBUG_INDATA1, "Gak, Evil plot, its not first, no fragmented delivery in progress\n"); - snprintf(msg, sizeof(msg), - "Expected B-bit for TSN=%8.8x, SID=%4.4x, SSN=%4.4x", - chk->rec.data.TSN_seq, - chk->rec.data.stream_number, - chk->rec.data.stream_seq); - op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_2; - sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); - *abort_flag = 1; - } else if (asoc->fragmented_delivery_inprogress && - (chk->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG) == SCTP_DATA_FIRST_FRAG) { + goto place_chunk; + } + if ((chk->rec.data.fsn_num == control->fsn_included) || + (control->pdapi_started)) { /* - * We are doing a partial delivery and the - * NEXT chunk MUST be either the LAST or - * MIDDLE fragment NOT a FIRST + * Ok this should not happen, if it does we + * started the pd-api on the higher TSN + * (since the equals part is a TSN failure + * it must be that). + * + * We are completly hosed in that case since I + * have no way to recover. This really will + * only happen if we can get more TSN's + * higher before the pd-api-point. */ - SCTPDBG(SCTP_DEBUG_INDATA1, "Gak, Evil plot, it IS a first and fragmented delivery in progress\n"); - snprintf(msg, sizeof(msg), - "Didn't expect B-bit for TSN=%8.8x, SID=%4.4x, SSN=%4.4x", - chk->rec.data.TSN_seq, - chk->rec.data.stream_number, - chk->rec.data.stream_seq); - op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_3; - sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); - *abort_flag = 1; - } else if (asoc->fragmented_delivery_inprogress) { - /* - * Here we are ok with a MIDDLE or LAST - * piece - */ - if (chk->rec.data.stream_number != - asoc->str_of_pdapi) { - /* Got to be the right STR No */ - SCTPDBG(SCTP_DEBUG_INDATA1, "Gak, Evil plot, it IS not same stream number %d vs %d\n", - chk->rec.data.stream_number, - asoc->str_of_pdapi); - snprintf(msg, sizeof(msg), - "Expected SID=%4.4x, got TSN=%8.8x, SID=%4.4x, SSN=%4.4x", - asoc->str_of_pdapi, - chk->rec.data.TSN_seq, - chk->rec.data.stream_number, - chk->rec.data.stream_seq); - op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_4; - sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); - *abort_flag = 1; - } else if ((asoc->fragment_flags & SCTP_DATA_UNORDERED) != - SCTP_DATA_UNORDERED && - chk->rec.data.stream_seq != asoc->ssn_of_pdapi) { - /* Got to be the right STR Seq */ - SCTPDBG(SCTP_DEBUG_INDATA1, "Gak, Evil plot, it IS not same stream seq %d vs %d\n", - chk->rec.data.stream_seq, - asoc->ssn_of_pdapi); - snprintf(msg, sizeof(msg), - "Expected SSN=%4.4x, got TSN=%8.8x, SID=%4.4x, SSN=%4.4x", - asoc->ssn_of_pdapi, - chk->rec.data.TSN_seq, - chk->rec.data.stream_number, - chk->rec.data.stream_seq); - op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_5; - sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); - *abort_flag = 1; - } + sctp_abort_in_reasm(stcb, strm, control, chk, + abort_flag, + SCTP_FROM_SCTP_INDATA + SCTP_LOC_4); + + return; } + /* + * Ok we have two firsts and the one we just got is + * smaller than the one we previously placed.. yuck! + * We must swap them out. + */ + /* swap the mbufs */ + tdata = control->data; + control->data = chk->data; + chk->data = tdata; + /* Swap the lengths */ + tmp = control->length; + control->length = chk->send_size; + chk->send_size = tmp; + /* Fix the FSN included */ + tmp = control->fsn_included; + control->fsn_included = chk->rec.data.fsn_num; + chk->rec.data.fsn_num = tmp; + goto place_chunk; } + control->first_frag_seen = 1; + control->top_fsn = control->fsn_included = chk->rec.data.fsn_num; + control->data = chk->data; + sctp_mark_non_revokable(asoc, chk->rec.data.TSN_seq); + chk->data = NULL; + sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); + sctp_setup_tail_pointer(control); return; } - /* Find its place */ - TAILQ_FOREACH(at, &asoc->reasmqueue, sctp_next) { - if (SCTP_TSN_GT(at->rec.data.TSN_seq, chk->rec.data.TSN_seq)) { +place_chunk: + if (TAILQ_EMPTY(&control->reasm)) { + TAILQ_INSERT_TAIL(&control->reasm, chk, sctp_next); + asoc->size_on_reasm_queue += chk->send_size; + sctp_ucount_incr(asoc->cnt_on_reasm_queue); + return; + } + TAILQ_FOREACH(at, &control->reasm, sctp_next) { + if (SCTP_TSN_GT(at->rec.data.fsn_num, chk->rec.data.fsn_num)) { /* - * one in queue is bigger than the new one, insert - * before this one + * This one in queue is bigger than the new one, + * insert the new one before at. */ - /* A check */ asoc->size_on_reasm_queue += chk->send_size; sctp_ucount_incr(asoc->cnt_on_reasm_queue); - next = at; + inserted = 1; TAILQ_INSERT_BEFORE(at, chk, sctp_next); break; - } else if (at->rec.data.TSN_seq == chk->rec.data.TSN_seq) { - /* Gak, He sent me a duplicate str seq number */ + } else if (at->rec.data.fsn_num == chk->rec.data.fsn_num) { /* - * foo bar, I guess I will just free this new guy, - * should we abort too? FIX ME MAYBE? Or it COULD be - * that the SSN's have wrapped. Maybe I should - * compare to TSN somehow... sigh for now just blow - * away the chunk! + * They sent a duplicate fsn number. This really + * should not happen since the FSN is a TSN and it + * should have been dropped earlier. */ if (chk->data) { sctp_m_freem(chk->data); chk->data = NULL; } sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); + sctp_abort_in_reasm(stcb, strm, control, chk, + abort_flag, + SCTP_FROM_SCTP_INDATA + SCTP_LOC_5); return; + } + } + if (inserted == 0) { + /* Its at the end */ + asoc->size_on_reasm_queue += chk->send_size; + sctp_ucount_incr(asoc->cnt_on_reasm_queue); + control->top_fsn = chk->rec.data.fsn_num; + TAILQ_INSERT_TAIL(&control->reasm, chk, sctp_next); + } +} + +static int +sctp_deliver_reasm_check(struct sctp_tcb *stcb, struct sctp_association *asoc, struct sctp_stream_in *strm) +{ + /* + * Given a stream, strm, see if any of the SSN's on it that are + * fragmented are ready to deliver. If so go ahead and place them on + * the read queue. In so placing if we have hit the end, then we + * need to remove them from the stream's queue. + */ + struct sctp_queued_to_read *control, *nctl = NULL; + uint32_t next_to_del; + uint32_t pd_point; + int ret = 0; + + if (stcb->sctp_socket) { + pd_point = min(SCTP_SB_LIMIT_RCV(stcb->sctp_socket) >> SCTP_PARTIAL_DELIVERY_SHIFT, + stcb->sctp_ep->partial_delivery_point); + } else { + pd_point = stcb->sctp_ep->partial_delivery_point; + } + control = TAILQ_FIRST(&strm->uno_inqueue); + if ((control) && + (asoc->idata_supported == 0)) { + /* Special handling needed for "old" data format */ + nctl = TAILQ_NEXT(control, next_instrm); + if (sctp_handle_old_data(stcb, asoc, strm, control, pd_point)) { + goto done_un; + } + } + if (strm->pd_api_started) { + /* Can't add more */ + return (0); + } + while (control) { + SCTPDBG(SCTP_DEBUG_XXX, "Looking at control:%p e(%d) ssn:%d top_fsn:%d inc_fsn:%d -uo\n", + control, control->end_added, control->sinfo_ssn, control->top_fsn, control->fsn_included); + nctl = TAILQ_NEXT(control, next_instrm); + if (control->end_added) { + /* We just put the last bit on */ + if (control->on_strm_q) { + if (control->on_strm_q != SCTP_ON_UNORDERED) { + panic("Huh control:%p on_q:%d -- not unordered?", + control, control->on_strm_q); + } + TAILQ_REMOVE(&strm->uno_inqueue, control, next_instrm); + control->on_strm_q = 0; + } + if (control->on_read_q == 0) { + sctp_add_to_readq(stcb->sctp_ep, stcb, + control, + &stcb->sctp_socket->so_rcv, control->end_added, + SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); + } } else { - prev = at; - if (TAILQ_NEXT(at, sctp_next) == NULL) { - /* - * We are at the end, insert it after this - * one - */ - /* check it first */ - asoc->size_on_reasm_queue += chk->send_size; - sctp_ucount_incr(asoc->cnt_on_reasm_queue); - TAILQ_INSERT_AFTER(&asoc->reasmqueue, at, chk, sctp_next); + /* Can we do a PD-API for this un-ordered guy? */ + if ((control->length >= pd_point) && (strm->pd_api_started == 0)) { + strm->pd_api_started = 1; + control->pdapi_started = 1; + sctp_add_to_readq(stcb->sctp_ep, stcb, + control, + &stcb->sctp_socket->so_rcv, control->end_added, + SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); + break; } } + control = nctl; } - /* Now the audits */ - if (prev) { - prev_tsn = chk->rec.data.TSN_seq - 1; - if (prev_tsn == prev->rec.data.TSN_seq) { - /* - * Ok the one I am dropping onto the end is the - * NEXT. A bit of valdiation here. - */ - if ((prev->rec.data.rcv_flags & SCTP_DATA_FRAG_MASK) == - SCTP_DATA_FIRST_FRAG || - (prev->rec.data.rcv_flags & SCTP_DATA_FRAG_MASK) == - SCTP_DATA_MIDDLE_FRAG) { +done_un: + control = TAILQ_FIRST(&strm->inqueue); + if (strm->pd_api_started) { + /* Can't add more */ + return (0); + } + if (control == NULL) { + return (ret); + } + if (strm->last_sequence_delivered == control->sinfo_ssn) { + /* + * Ok the guy at the top was being partially delivered + * completed, so we remove it. Note the pd_api flag was + * taken off when the chunk was merged on in + * sctp_queue_data_for_reasm below. + */ + nctl = TAILQ_NEXT(control, next_instrm); + SCTPDBG(SCTP_DEBUG_XXX, + "Looking at control:%p e(%d) ssn:%d top_fsn:%d inc_fsn:%d (lastdel:%d)- o\n", + control, control->end_added, control->sinfo_ssn, + control->top_fsn, control->fsn_included, + strm->last_sequence_delivered); + if (control->end_added) { + if (control->on_strm_q) { + if (control->on_strm_q != SCTP_ON_ORDERED) { + panic("Huh control:%p on_q:%d -- not ordered?", + control, control->on_strm_q); + } + TAILQ_REMOVE(&strm->inqueue, control, next_instrm); + control->on_strm_q = 0; + } + if (control->on_read_q == 0) { + sctp_add_to_readq(stcb->sctp_ep, stcb, + control, + &stcb->sctp_socket->so_rcv, control->end_added, + SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); + } + if (strm->pd_api_started && control->pdapi_started) { + control->pdapi_started = 0; + strm->pd_api_started = 0; + } + control = nctl; + } + } + if (strm->pd_api_started) { + /* + * Can't add more must have gotten an un-ordered above being + * partially delivered. + */ + return (0); + } +deliver_more: + next_to_del = strm->last_sequence_delivered + 1; + if (control) { + SCTPDBG(SCTP_DEBUG_XXX, + "Looking at control:%p e(%d) ssn:%d top_fsn:%d inc_fsn:%d (nxtdel:%d)- o\n", + control, control->end_added, control->sinfo_ssn, control->top_fsn, control->fsn_included, + next_to_del); + nctl = TAILQ_NEXT(control, next_instrm); + if ((control->sinfo_ssn == next_to_del) && + (control->first_frag_seen)) { + /* Ok we can deliver it onto the stream. */ + if (control->end_added) { + /* We are done with it afterwards */ + if (control->on_strm_q) { + if (control->on_strm_q != SCTP_ON_ORDERED) { + panic("Huh control:%p on_q:%d -- not ordered?", + control, control->on_strm_q); + } + TAILQ_REMOVE(&strm->inqueue, control, next_instrm); + control->on_strm_q = 0; + } + ret++; + } + if (((control->sinfo_flags >> 8) & SCTP_DATA_NOT_FRAG) == SCTP_DATA_NOT_FRAG) { /* - * Insert chk MUST be a MIDDLE or LAST - * fragment + * A singleton now slipping through - mark + * it non-revokable too */ - if ((chk->rec.data.rcv_flags & SCTP_DATA_FRAG_MASK) == - SCTP_DATA_FIRST_FRAG) { - SCTPDBG(SCTP_DEBUG_INDATA1, "Prev check - It can be a midlle or last but not a first\n"); - SCTPDBG(SCTP_DEBUG_INDATA1, "Gak, Evil plot, it's a FIRST!\n"); - snprintf(msg, sizeof(msg), - "Can't handle B-bit, got TSN=%8.8x, SID=%4.4x, SSN=%4.4x", - chk->rec.data.TSN_seq, - chk->rec.data.stream_number, - chk->rec.data.stream_seq); - op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_6; - sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); - *abort_flag = 1; - return; - } - if (chk->rec.data.stream_number != - prev->rec.data.stream_number) { + sctp_mark_non_revokable(asoc, control->sinfo_tsn); + } else if (control->end_added == 0) { + /* + * Check if we can defer adding until its + * all there + */ + if ((control->length < pd_point) || (strm->pd_api_started)) { /* - * Huh, need the correct STR here, - * they must be the same. + * Don't need it or cannot add more + * (one being delivered that way) */ - SCTPDBG(SCTP_DEBUG_INDATA1, "Prev check - Gak, Evil plot, sid:%d not the same as at:%d\n", - chk->rec.data.stream_number, - prev->rec.data.stream_number); - snprintf(msg, sizeof(msg), - "Expect SID=%4.4x, got TSN=%8.8x, SID=%4.4x, SSN=%4.4x", - prev->rec.data.stream_number, - chk->rec.data.TSN_seq, - chk->rec.data.stream_number, - chk->rec.data.stream_seq); - op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_7; - sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); - *abort_flag = 1; - return; + goto out; } - if ((chk->rec.data.rcv_flags & SCTP_DATA_UNORDERED) != - (prev->rec.data.rcv_flags & SCTP_DATA_UNORDERED)) { - /* - * Huh, need the same ordering here, - * they must be the same. - */ - SCTPDBG(SCTP_DEBUG_INDATA1, "Prev check - Gak, Evil plot, U-bit not constant\n"); - snprintf(msg, sizeof(msg), - "Expect U-bit=%d for TSN=%8.8x, got U-bit=%d", - (prev->rec.data.rcv_flags & SCTP_DATA_UNORDERED) ? 1 : 0, - chk->rec.data.TSN_seq, - (chk->rec.data.rcv_flags & SCTP_DATA_UNORDERED) ? 1 : 0); - op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_8; - sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); - *abort_flag = 1; - return; - } - if ((prev->rec.data.rcv_flags & SCTP_DATA_UNORDERED) == 0 && - chk->rec.data.stream_seq != - prev->rec.data.stream_seq) { - /* - * Huh, need the correct STR here, - * they must be the same. - */ - SCTPDBG(SCTP_DEBUG_INDATA1, "Prev check - Gak, Evil plot, sseq:%d not the same as at:%d\n", - chk->rec.data.stream_seq, - prev->rec.data.stream_seq); - snprintf(msg, sizeof(msg), - "Expect SSN=%4.4x, got TSN=%8.8x, SID=%4.4x, SSN=%4.4x", - prev->rec.data.stream_seq, - chk->rec.data.TSN_seq, - chk->rec.data.stream_number, - chk->rec.data.stream_seq); - op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_9; - sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); - *abort_flag = 1; - return; - } - } else if ((prev->rec.data.rcv_flags & SCTP_DATA_FRAG_MASK) == - SCTP_DATA_LAST_FRAG) { - /* Insert chk MUST be a FIRST */ - if ((chk->rec.data.rcv_flags & SCTP_DATA_FRAG_MASK) != - SCTP_DATA_FIRST_FRAG) { - SCTPDBG(SCTP_DEBUG_INDATA1, "Prev check - Gak, evil plot, its not FIRST and it must be!\n"); - snprintf(msg, sizeof(msg), - "Expect B-bit, got TSN=%8.8x, SID=%4.4x, SSN=%4.4x", - chk->rec.data.TSN_seq, - chk->rec.data.stream_number, - chk->rec.data.stream_seq); - op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_10; - sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); - *abort_flag = 1; - return; - } } + if (control->on_read_q == 0) { + sctp_add_to_readq(stcb->sctp_ep, stcb, + control, + &stcb->sctp_socket->so_rcv, control->end_added, + SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); + } + strm->last_sequence_delivered = next_to_del; + if ((control->end_added) && (control->last_frag_seen)) { + control = nctl; + goto deliver_more; + } else { + /* We are now doing PD API */ + strm->pd_api_started = 1; + control->pdapi_started = 1; + } } } - if (next) { - post_tsn = chk->rec.data.TSN_seq + 1; - if (post_tsn == next->rec.data.TSN_seq) { +out: + return (ret); +} + +void +sctp_add_chk_to_control(struct sctp_queued_to_read *control, + struct sctp_stream_in *strm, + struct sctp_tcb *stcb, struct sctp_association *asoc, + struct sctp_tmit_chunk *chk) +{ + /* + * Given a control and a chunk, merge the data from the chk onto the + * control and free up the chunk resources. + */ + int i_locked = 0; + + if (control->on_read_q) { + /* + * Its being pd-api'd so we must do some locks. + */ + SCTP_INP_READ_LOCK(stcb->sctp_ep); + i_locked = 1; + } + if (control->data == NULL) { + control->data = chk->data; + sctp_setup_tail_pointer(control); + } else { + sctp_add_to_tail_pointer(control, chk->data); + } + control->fsn_included = chk->rec.data.fsn_num; + asoc->size_on_reasm_queue -= chk->send_size; + sctp_ucount_decr(asoc->cnt_on_reasm_queue); + sctp_mark_non_revokable(asoc, chk->rec.data.TSN_seq); + chk->data = NULL; + if (chk->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG) { + control->first_frag_seen = 1; + } + if (chk->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) { + /* Its complete */ + if ((control->on_strm_q) && (control->on_read_q)) { + if (control->pdapi_started) { + control->pdapi_started = 0; + strm->pd_api_started = 0; + } + if (control->on_strm_q == SCTP_ON_UNORDERED) { + /* Unordered */ + TAILQ_REMOVE(&strm->uno_inqueue, control, next_instrm); + control->on_strm_q = 0; + } else if (control->on_strm_q == SCTP_ON_ORDERED) { + /* Ordered */ + TAILQ_REMOVE(&strm->inqueue, control, next_instrm); + control->on_strm_q = 0; + } else if (control->on_strm_q) { + panic("Unknown state on ctrl:%p on_strm_q:%d", control, + control->on_strm_q); + } + } + control->end_added = 1; + control->last_frag_seen = 1; + } + if (i_locked) { + SCTP_INP_READ_UNLOCK(stcb->sctp_ep); + } + sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); +} + +/* + * Dump onto the re-assembly queue, in its proper place. After dumping on the + * queue, see if anthing can be delivered. If so pull it off (or as much as + * we can. If we run out of space then we must dump what we can and set the + * appropriate flag to say we queued what we could. + */ +static void +sctp_queue_data_for_reasm(struct sctp_tcb *stcb, struct sctp_association *asoc, + struct sctp_stream_in *strm, + struct sctp_queued_to_read *control, + struct sctp_tmit_chunk *chk, + int created_control, + int *abort_flag, uint32_t tsn) +{ + uint32_t next_fsn; + struct sctp_tmit_chunk *at, *nat; + int cnt_added, unordered; + + /* + * For old un-ordered data chunks. + */ + if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) { + unordered = 1; + } else { + unordered = 0; + } + /* Must be added to the stream-in queue */ + if (created_control) { + if (sctp_place_control_in_stream(strm, asoc, control)) { + /* Duplicate SSN? */ + clean_up_control(stcb, control); + sctp_abort_in_reasm(stcb, strm, control, chk, + abort_flag, + SCTP_FROM_SCTP_INDATA + SCTP_LOC_6); + return; + } + if ((tsn == (asoc->cumulative_tsn + 1) && (asoc->idata_supported == 0))) { /* - * Ok the one I am inserting ahead of is my NEXT - * one. A bit of valdiation here. + * Ok we created this control and now lets validate + * that its legal i.e. there is a B bit set, if not + * and we have up to the cum-ack then its invalid. */ - if (next->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG) { - /* Insert chk MUST be a last fragment */ - if ((chk->rec.data.rcv_flags & SCTP_DATA_FRAG_MASK) - != SCTP_DATA_LAST_FRAG) { - SCTPDBG(SCTP_DEBUG_INDATA1, "Next chk - Next is FIRST, we must be LAST\n"); - SCTPDBG(SCTP_DEBUG_INDATA1, "Gak, Evil plot, its not a last!\n"); - snprintf(msg, sizeof(msg), - "Expect only E-bit, got TSN=%8.8x, SID=%4.4x, SSN=%4.4x", - chk->rec.data.TSN_seq, - chk->rec.data.stream_number, - chk->rec.data.stream_seq); - op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_11; - sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); - *abort_flag = 1; - return; - } - } else if ((next->rec.data.rcv_flags & SCTP_DATA_FRAG_MASK) == - SCTP_DATA_MIDDLE_FRAG || - (next->rec.data.rcv_flags & SCTP_DATA_FRAG_MASK) == - SCTP_DATA_LAST_FRAG) { + if ((chk->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG) == 0) { + sctp_abort_in_reasm(stcb, strm, control, chk, + abort_flag, + SCTP_FROM_SCTP_INDATA + SCTP_LOC_7); + return; + } + } + } + if ((asoc->idata_supported == 0) && ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED)) { + sctp_inject_old_data_unordered(stcb, asoc, strm, control, chk, abort_flag); + return; + } + /* + * Ok we must queue the chunk into the reasembly portion: o if its + * the first it goes to the control mbuf. o if its not first but the + * next in sequence it goes to the control, and each succeeding one + * in order also goes. o if its not in order we place it on the list + * in its place. + */ + if (chk->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG) { + /* Its the very first one. */ + SCTPDBG(SCTP_DEBUG_XXX, + "chunk is a first fsn:%d becomes fsn_included\n", + chk->rec.data.fsn_num); + if (control->first_frag_seen) { + /* + * Error on senders part, they either sent us two + * data chunks with FIRST, or they sent two + * un-ordered chunks that were fragmented at the + * same time in the same stream. + */ + sctp_abort_in_reasm(stcb, strm, control, chk, + abort_flag, + SCTP_FROM_SCTP_INDATA + SCTP_LOC_8); + return; + } + control->first_frag_seen = 1; + control->fsn_included = chk->rec.data.fsn_num; + control->data = chk->data; + sctp_mark_non_revokable(asoc, chk->rec.data.TSN_seq); + chk->data = NULL; + sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); + sctp_setup_tail_pointer(control); + } else { + /* Place the chunk in our list */ + int inserted = 0; + + if (control->last_frag_seen == 0) { + /* Still willing to raise highest FSN seen */ + if (SCTP_TSN_GT(chk->rec.data.fsn_num, control->top_fsn)) { + SCTPDBG(SCTP_DEBUG_XXX, + "We have a new top_fsn:%d\n", + chk->rec.data.fsn_num); + control->top_fsn = chk->rec.data.fsn_num; + } + if (chk->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) { + SCTPDBG(SCTP_DEBUG_XXX, + "The last fsn is now in place fsn:%d\n", + chk->rec.data.fsn_num); + control->last_frag_seen = 1; + } + if (asoc->idata_supported || control->first_frag_seen) { /* - * Insert chk CAN be MIDDLE or FIRST NOT - * LAST + * For IDATA we always check since we know + * that the first fragment is 0. For old + * DATA we have to receive the first before + * we knwo the first FSN (which is the TSN). */ - if ((chk->rec.data.rcv_flags & SCTP_DATA_FRAG_MASK) == - SCTP_DATA_LAST_FRAG) { - SCTPDBG(SCTP_DEBUG_INDATA1, "Next chk - Next is a MIDDLE/LAST\n"); - SCTPDBG(SCTP_DEBUG_INDATA1, "Gak, Evil plot, new prev chunk is a LAST\n"); - snprintf(msg, sizeof(msg), - "Didn't expect E-bit, got TSN=%8.8x, SID=%4.4x, SSN=%4.4x", - chk->rec.data.TSN_seq, - chk->rec.data.stream_number, - chk->rec.data.stream_seq); - op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_12; - sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); - *abort_flag = 1; - return; - } - if (chk->rec.data.stream_number != - next->rec.data.stream_number) { + if (SCTP_TSN_GE(control->fsn_included, chk->rec.data.fsn_num)) { /* - * Huh, need the correct STR here, - * they must be the same. + * We have already delivered up to + * this so its a dup */ - SCTPDBG(SCTP_DEBUG_INDATA1, "Next chk - Gak, Evil plot, ssn:%d not the same as at:%d\n", - chk->rec.data.stream_number, - next->rec.data.stream_number); - snprintf(msg, sizeof(msg), - "Required SID %4.4x, got TSN=%8.8x, SID=%4.4x, SSN=%4.4x", - next->rec.data.stream_number, - chk->rec.data.TSN_seq, - chk->rec.data.stream_number, - chk->rec.data.stream_seq); - op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_13; - sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); - *abort_flag = 1; + sctp_abort_in_reasm(stcb, strm, control, chk, + abort_flag, + SCTP_FROM_SCTP_INDATA + SCTP_LOC_9); return; } - if ((chk->rec.data.rcv_flags & SCTP_DATA_UNORDERED) != - (next->rec.data.rcv_flags & SCTP_DATA_UNORDERED)) { + } + } else { + if (chk->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) { + /* Second last? huh? */ + SCTPDBG(SCTP_DEBUG_XXX, + "Duplicate last fsn:%d (top:%d) -- abort\n", + chk->rec.data.fsn_num, control->top_fsn); + sctp_abort_in_reasm(stcb, strm, control, + chk, abort_flag, + SCTP_FROM_SCTP_INDATA + SCTP_LOC_10); + return; + } + if (asoc->idata_supported || control->first_frag_seen) { + /* + * For IDATA we always check since we know + * that the first fragment is 0. For old + * DATA we have to receive the first before + * we knwo the first FSN (which is the TSN). + */ + + if (SCTP_TSN_GE(control->fsn_included, chk->rec.data.fsn_num)) { /* - * Huh, need the same ordering here, - * they must be the same. + * We have already delivered up to + * this so its a dup */ - SCTPDBG(SCTP_DEBUG_INDATA1, "Next check - Gak, Evil plot, U-bit not constant\n"); - snprintf(msg, sizeof(msg), - "Expect U-bit=%d for TSN=%8.8x, got U-bit=%d", - (next->rec.data.rcv_flags & SCTP_DATA_UNORDERED) ? 1 : 0, - chk->rec.data.TSN_seq, - (chk->rec.data.rcv_flags & SCTP_DATA_UNORDERED) ? 1 : 0); - op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_14; - sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); - *abort_flag = 1; + SCTPDBG(SCTP_DEBUG_XXX, + "New fsn:%d is already seen in included_fsn:%d -- abort\n", + chk->rec.data.fsn_num, control->fsn_included); + sctp_abort_in_reasm(stcb, strm, control, chk, + abort_flag, + SCTP_FROM_SCTP_INDATA + SCTP_LOC_11); return; } - if ((next->rec.data.rcv_flags & SCTP_DATA_UNORDERED) == 0 && - chk->rec.data.stream_seq != - next->rec.data.stream_seq) { - /* - * Huh, need the correct STR here, - * they must be the same. - */ - SCTPDBG(SCTP_DEBUG_INDATA1, "Next chk - Gak, Evil plot, sseq:%d not the same as at:%d\n", - chk->rec.data.stream_seq, - next->rec.data.stream_seq); - snprintf(msg, sizeof(msg), - "Required SSN %4.4x, got TSN=%8.8x, SID=%4.4x, SSN=%4.4x", - next->rec.data.stream_seq, - chk->rec.data.TSN_seq, - chk->rec.data.stream_number, - chk->rec.data.stream_seq); - op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_15; - sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); - *abort_flag = 1; - return; + } + /* + * validate not beyond top FSN if we have seen last + * one + */ + if (SCTP_TSN_GT(chk->rec.data.fsn_num, control->top_fsn)) { + SCTPDBG(SCTP_DEBUG_XXX, + "New fsn:%d is beyond or at top_fsn:%d -- abort\n", + chk->rec.data.fsn_num, + control->top_fsn); + sctp_abort_in_reasm(stcb, strm, control, chk, + abort_flag, + SCTP_FROM_SCTP_INDATA + SCTP_LOC_12); + return; + } + } + /* + * If we reach here, we need to place the new chunk in the + * reassembly for this control. + */ + SCTPDBG(SCTP_DEBUG_XXX, + "chunk is a not first fsn:%d needs to be inserted\n", + chk->rec.data.fsn_num); + TAILQ_FOREACH(at, &control->reasm, sctp_next) { + if (SCTP_TSN_GT(at->rec.data.fsn_num, chk->rec.data.fsn_num)) { + /* + * This one in queue is bigger than the new + * one, insert the new one before at. + */ + SCTPDBG(SCTP_DEBUG_XXX, + "Insert it before fsn:%d\n", + at->rec.data.fsn_num); + asoc->size_on_reasm_queue += chk->send_size; + sctp_ucount_incr(asoc->cnt_on_reasm_queue); + TAILQ_INSERT_BEFORE(at, chk, sctp_next); + inserted = 1; + break; + } else if (at->rec.data.fsn_num == chk->rec.data.fsn_num) { + /* + * Gak, He sent me a duplicate str seq + * number + */ + /* + * foo bar, I guess I will just free this + * new guy, should we abort too? FIX ME + * MAYBE? Or it COULD be that the SSN's have + * wrapped. Maybe I should compare to TSN + * somehow... sigh for now just blow away + * the chunk! + */ + SCTPDBG(SCTP_DEBUG_XXX, + "Duplicate to fsn:%d -- abort\n", + at->rec.data.fsn_num); + sctp_abort_in_reasm(stcb, strm, control, + chk, abort_flag, + SCTP_FROM_SCTP_INDATA + SCTP_LOC_13); + return; + } + } + if (inserted == 0) { + /* Goes on the end */ + SCTPDBG(SCTP_DEBUG_XXX, "Inserting at tail of list fsn:%d\n", + chk->rec.data.fsn_num); + asoc->size_on_reasm_queue += chk->send_size; + sctp_ucount_incr(asoc->cnt_on_reasm_queue); + TAILQ_INSERT_TAIL(&control->reasm, chk, sctp_next); + } + } + /* + * Ok lets see if we can suck any up into the control structure that + * are in seq if it makes sense. + */ + cnt_added = 0; + /* + * If the first fragment has not been seen there is no sense in + * looking. + */ + if (control->first_frag_seen) { + next_fsn = control->fsn_included + 1; + TAILQ_FOREACH_SAFE(at, &control->reasm, sctp_next, nat) { + if (at->rec.data.fsn_num == next_fsn) { + /* We can add this one now to the control */ + SCTPDBG(SCTP_DEBUG_XXX, + "Adding more to control:%p at:%p fsn:%d next_fsn:%d included:%d\n", + control, at, + at->rec.data.fsn_num, + next_fsn, control->fsn_included); + TAILQ_REMOVE(&control->reasm, at, sctp_next); + sctp_add_chk_to_control(control, strm, stcb, asoc, at); + cnt_added++; + next_fsn++; + if (control->end_added && control->pdapi_started) { + if (strm->pd_api_started) { + strm->pd_api_started = 0; + control->pdapi_started = 0; + } + if (control->on_read_q == 0) { + sctp_add_to_readq(stcb->sctp_ep, stcb, + control, + &stcb->sctp_socket->so_rcv, control->end_added, + SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); + } + break; } + } else { + break; } } } - /* Do we need to do some delivery? check */ - sctp_deliver_reasm_check(stcb, asoc); + if ((control->on_read_q) && (cnt_added > 0)) { + /* Need to wakeup the reader */ + sctp_wakeup_the_read_socket(stcb->sctp_ep); + } } -/* - * This is an unfortunate routine. It checks to make sure a evil guy is not - * stuffing us full of bad packet fragments. A broken peer could also do this - * but this is doubtful. It is to bad I must worry about evil crackers sigh - * :< more cycles. - */ -static int -sctp_does_tsn_belong_to_reasm(struct sctp_association *asoc, - uint32_t TSN_seq) +static struct sctp_queued_to_read * +find_reasm_entry(struct sctp_stream_in *strm, uint32_t msg_id, int ordered, int old) { - struct sctp_tmit_chunk *at; - uint32_t tsn_est; + struct sctp_queued_to_read *reasm; - TAILQ_FOREACH(at, &asoc->reasmqueue, sctp_next) { - if (SCTP_TSN_GT(TSN_seq, at->rec.data.TSN_seq)) { - /* is it one bigger? */ - tsn_est = at->rec.data.TSN_seq + 1; - if (tsn_est == TSN_seq) { - /* yep. It better be a last then */ - if ((at->rec.data.rcv_flags & SCTP_DATA_FRAG_MASK) != - SCTP_DATA_LAST_FRAG) { - /* - * Ok this guy belongs next to a guy - * that is NOT last, it should be a - * middle/last, not a complete - * chunk. - */ - return (1); - } else { - /* - * This guy is ok since its a LAST - * and the new chunk is a fully - * self- contained one. - */ - return (0); - } + if (ordered) { + TAILQ_FOREACH(reasm, &strm->inqueue, next_instrm) { + if (reasm->msg_id == msg_id) { + break; } - } else if (TSN_seq == at->rec.data.TSN_seq) { - /* Software error since I have a dup? */ - return (1); - } else { - /* - * Ok, 'at' is larger than new chunk but does it - * need to be right before it. - */ - tsn_est = TSN_seq + 1; - if (tsn_est == at->rec.data.TSN_seq) { - /* Yep, It better be a first */ - if ((at->rec.data.rcv_flags & SCTP_DATA_FRAG_MASK) != - SCTP_DATA_FIRST_FRAG) { - return (1); - } else { - return (0); - } + } + } else { + if (old) { + reasm = TAILQ_FIRST(&strm->uno_inqueue); + return (reasm); + } + TAILQ_FOREACH(reasm, &strm->uno_inqueue, next_instrm) { + if (reasm->msg_id == msg_id) { + break; } } } - return (0); + return (reasm); } + static int sctp_process_a_data_chunk(struct sctp_tcb *stcb, struct sctp_association *asoc, - struct mbuf **m, int offset, struct sctp_data_chunk *ch, int chk_length, + struct mbuf **m, int offset, int chk_length, struct sctp_nets *net, uint32_t * high_tsn, int *abort_flag, - int *break_flag, int last_chunk) + int *break_flag, int last_chunk, uint8_t chtype) { /* Process a data chunk */ /* struct sctp_tmit_chunk *chk; */ + struct sctp_data_chunk *ch; + struct sctp_idata_chunk *nch, chunk_buf; struct sctp_tmit_chunk *chk; - uint32_t tsn, gap; + uint32_t tsn, fsn, gap, msg_id; struct mbuf *dmbuf; int the_len; int need_reasm_check = 0; - uint16_t strmno, strmseq; + uint16_t strmno; struct mbuf *op_err; char msg[SCTP_DIAG_INFO_LEN]; - struct sctp_queued_to_read *control; - int ordered; + struct sctp_queued_to_read *control = NULL; uint32_t protocol_id; uint8_t chunk_flags; struct sctp_stream_reset_list *liste; + struct sctp_stream_in *strm; + int ordered; + size_t clen; + int created_control = 0; + uint8_t old_data; chk = NULL; - tsn = ntohl(ch->dp.tsn); + if (chtype == SCTP_IDATA) { + nch = (struct sctp_idata_chunk *)sctp_m_getptr(*m, offset, + sizeof(struct sctp_idata_chunk), (uint8_t *) & chunk_buf); + + ch = (struct sctp_data_chunk *)nch; + clen = sizeof(struct sctp_idata_chunk); + tsn = ntohl(ch->dp.tsn); + msg_id = ntohl(nch->dp.msg_id); + if (ch->ch.chunk_flags & SCTP_DATA_FIRST_FRAG) + fsn = 0; + else + fsn = ntohl(nch->dp.fsn); + old_data = 0; + } else { + ch = (struct sctp_data_chunk *)sctp_m_getptr(*m, offset, + sizeof(struct sctp_data_chunk), (uint8_t *) & chunk_buf); + + tsn = ntohl(ch->dp.tsn); + clen = sizeof(struct sctp_data_chunk); + fsn = tsn; + msg_id = (uint32_t) (ntohs(ch->dp.stream_sequence)); + nch = NULL; + old_data = 1; + } chunk_flags = ch->ch.chunk_flags; + if ((size_t)chk_length == clen) { + /* + * Need to send an abort since we had a empty data chunk. + */ + struct mbuf *op_err; + + op_err = sctp_generate_no_user_data_cause(ch->dp.tsn); + stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_14; + sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); + *abort_flag = 1; + return (0); + } + ordered = ((chunk_flags & SCTP_DATA_UNORDERED) == 0); if ((chunk_flags & SCTP_DATA_SACK_IMMEDIATELY) == SCTP_DATA_SACK_IMMEDIATELY) { asoc->send_sack = 1; } protocol_id = ch->dp.protocol_id; ordered = ((chunk_flags & SCTP_DATA_UNORDERED) == 0); if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MAP_LOGGING_ENABLE) { sctp_log_map(tsn, asoc->cumulative_tsn, asoc->highest_tsn_inside_map, SCTP_MAP_TSN_ENTERS); } if (stcb == NULL) { return (0); } SCTP_LTRACE_CHK(stcb->sctp_ep, stcb, ch->ch.chunk_type, tsn); if (SCTP_TSN_GE(asoc->cumulative_tsn, tsn)) { /* It is a duplicate */ SCTP_STAT_INCR(sctps_recvdupdata); if (asoc->numduptsns < SCTP_MAX_DUP_TSNS) { /* Record a dup for the next outbound sack */ asoc->dup_tsns[asoc->numduptsns] = tsn; asoc->numduptsns++; } asoc->send_sack = 1; return (0); } /* Calculate the number of TSN's between the base and this TSN */ SCTP_CALC_TSN_TO_GAP(gap, tsn, asoc->mapping_array_base_tsn); if (gap >= (SCTP_MAPPING_ARRAY << 3)) { /* Can't hold the bit in the mapping at max array, toss it */ return (0); } if (gap >= (uint32_t) (asoc->mapping_array_size << 3)) { SCTP_TCB_LOCK_ASSERT(stcb); if (sctp_expand_mapping_array(asoc, gap)) { /* Can't expand, drop it */ return (0); } } if (SCTP_TSN_GT(tsn, *high_tsn)) { *high_tsn = tsn; } /* See if we have received this one already */ if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap) || SCTP_IS_TSN_PRESENT(asoc->nr_mapping_array, gap)) { SCTP_STAT_INCR(sctps_recvdupdata); if (asoc->numduptsns < SCTP_MAX_DUP_TSNS) { /* Record a dup for the next outbound sack */ asoc->dup_tsns[asoc->numduptsns] = tsn; asoc->numduptsns++; } asoc->send_sack = 1; return (0); } /* * Check to see about the GONE flag, duplicates would cause a sack * to be sent up above */ if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET))) { /* * wait a minute, this guy is gone, there is no longer a * receiver. Send peer an ABORT! */ op_err = sctp_generate_cause(SCTP_CAUSE_OUT_OF_RESC, ""); sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); *abort_flag = 1; return (0); } /* * Now before going further we see if there is room. If NOT then we * MAY let one through only IF this TSN is the one we are waiting * for on a partial delivery API. */ - /* now do the tests */ - if (((asoc->cnt_on_all_streams + - asoc->cnt_on_reasm_queue + - asoc->cnt_msg_on_sb) >= SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue)) || - (((int)asoc->my_rwnd) <= 0)) { - /* - * When we have NO room in the rwnd we check to make sure - * the reader is doing its job... - */ - if (stcb->sctp_socket->so_rcv.sb_cc) { - /* some to read, wake-up */ -#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) - struct socket *so; - - so = SCTP_INP_SO(stcb->sctp_ep); - atomic_add_int(&stcb->asoc.refcnt, 1); - SCTP_TCB_UNLOCK(stcb); - SCTP_SOCKET_LOCK(so, 1); - SCTP_TCB_LOCK(stcb); - atomic_subtract_int(&stcb->asoc.refcnt, 1); - if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) { - /* assoc was freed while we were unlocked */ - SCTP_SOCKET_UNLOCK(so, 1); - return (0); - } -#endif - sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket); -#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) - SCTP_SOCKET_UNLOCK(so, 1); -#endif - } - /* now is it in the mapping array of what we have accepted? */ - if (SCTP_TSN_GT(tsn, asoc->highest_tsn_inside_map) && - SCTP_TSN_GT(tsn, asoc->highest_tsn_inside_nr_map)) { - /* Nope not in the valid range dump it */ - sctp_set_rwnd(stcb, asoc); - if ((asoc->cnt_on_all_streams + - asoc->cnt_on_reasm_queue + - asoc->cnt_msg_on_sb) >= SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue)) { - SCTP_STAT_INCR(sctps_datadropchklmt); - } else { - SCTP_STAT_INCR(sctps_datadroprwnd); - } - *break_flag = 1; - return (0); - } - } + /* Is the stream valid? */ strmno = ntohs(ch->dp.stream_id); + if (strmno >= asoc->streamincnt) { struct sctp_error_invalid_stream *cause; op_err = sctp_get_mbuf_for_msg(sizeof(struct sctp_error_invalid_stream), 0, M_NOWAIT, 1, MT_DATA); if (op_err != NULL) { /* add some space up front so prepend will work well */ SCTP_BUF_RESV_UF(op_err, sizeof(struct sctp_chunkhdr)); cause = mtod(op_err, struct sctp_error_invalid_stream *); /* * Error causes are just param's and this one has * two back to back phdr, one with the error type * and size, the other with the streamid and a rsvd */ SCTP_BUF_LEN(op_err) = sizeof(struct sctp_error_invalid_stream); cause->cause.code = htons(SCTP_CAUSE_INVALID_STREAM); cause->cause.length = htons(sizeof(struct sctp_error_invalid_stream)); cause->stream_id = ch->dp.stream_id; cause->reserved = htons(0); sctp_queue_op_err(stcb, op_err); } SCTP_STAT_INCR(sctps_badsid); SCTP_TCB_LOCK_ASSERT(stcb); SCTP_SET_TSN_PRESENT(asoc->nr_mapping_array, gap); if (SCTP_TSN_GT(tsn, asoc->highest_tsn_inside_nr_map)) { asoc->highest_tsn_inside_nr_map = tsn; } if (tsn == (asoc->cumulative_tsn + 1)) { /* Update cum-ack */ asoc->cumulative_tsn = tsn; } return (0); } + strm = &asoc->strmin[strmno]; /* - * Before we continue lets validate that we are not being fooled by - * an evil attacker. We can only have 4k chunks based on our TSN - * spread allowed by the mapping array 512 * 8 bits, so there is no - * way our stream sequence numbers could have wrapped. We of course - * only validate the FIRST fragment so the bit must be set. + * If its a fragmented message, lets see if we can find the control + * on the reassembly queues. */ - strmseq = ntohs(ch->dp.stream_sequence); + if ((chtype == SCTP_IDATA) && ((chunk_flags & SCTP_DATA_FIRST_FRAG) == 0) && (fsn == 0)) { + /* + * The first *must* be fsn 0, and other (middle/end) pieces + * can *not* be fsn 0. + */ + goto err_out; + } + if ((chunk_flags & SCTP_DATA_NOT_FRAG) != SCTP_DATA_NOT_FRAG) { + /* See if we can find the re-assembly entity */ + control = find_reasm_entry(strm, msg_id, ordered, old_data); + SCTPDBG(SCTP_DEBUG_XXX, "chunk_flags:0x%x look for control on queues %p\n", + chunk_flags, control); + if (control) { + /* We found something, does it belong? */ + if (ordered && (msg_id != control->sinfo_ssn)) { + err_out: + op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); + stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_15; + sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); + *abort_flag = 1; + return (0); + } + if (ordered && ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED)) { + /* + * We can't have a switched order with an + * unordered chunk + */ + goto err_out; + } + if (!ordered && (((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) == 0)) { + /* + * We can't have a switched unordered with a + * ordered chunk + */ + goto err_out; + } + } + } else { + /* + * Its a complete segment. Lets validate we don't have a + * re-assembly going on with the same Stream/Seq (for + * ordered) or in the same Stream for unordered. + */ + SCTPDBG(SCTP_DEBUG_XXX, "chunk_flags:0x%x look for msg in case we have dup\n", + chunk_flags); + if (find_reasm_entry(strm, msg_id, ordered, old_data)) { + SCTPDBG(SCTP_DEBUG_XXX, "chunk_flags:0x%x dup detected on msg_id:%d\n", + chunk_flags, + msg_id); + + goto err_out; + } + } + /* now do the tests */ + if (((asoc->cnt_on_all_streams + + asoc->cnt_on_reasm_queue + + asoc->cnt_msg_on_sb) >= SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue)) || + (((int)asoc->my_rwnd) <= 0)) { + /* + * When we have NO room in the rwnd we check to make sure + * the reader is doing its job... + */ + if (stcb->sctp_socket->so_rcv.sb_cc) { + /* some to read, wake-up */ +#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) + struct socket *so; + + so = SCTP_INP_SO(stcb->sctp_ep); + atomic_add_int(&stcb->asoc.refcnt, 1); + SCTP_TCB_UNLOCK(stcb); + SCTP_SOCKET_LOCK(so, 1); + SCTP_TCB_LOCK(stcb); + atomic_subtract_int(&stcb->asoc.refcnt, 1); + if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) { + /* assoc was freed while we were unlocked */ + SCTP_SOCKET_UNLOCK(so, 1); + return (0); + } +#endif + sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket); +#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) + SCTP_SOCKET_UNLOCK(so, 1); +#endif + } + /* now is it in the mapping array of what we have accepted? */ + if (nch == NULL) { + if (SCTP_TSN_GT(tsn, asoc->highest_tsn_inside_map) && + SCTP_TSN_GT(tsn, asoc->highest_tsn_inside_nr_map)) { + /* Nope not in the valid range dump it */ + dump_packet: + sctp_set_rwnd(stcb, asoc); + if ((asoc->cnt_on_all_streams + + asoc->cnt_on_reasm_queue + + asoc->cnt_msg_on_sb) >= SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue)) { + SCTP_STAT_INCR(sctps_datadropchklmt); + } else { + SCTP_STAT_INCR(sctps_datadroprwnd); + } + *break_flag = 1; + return (0); + } + } else { + if (control == NULL) { + goto dump_packet; + } + if (SCTP_TSN_GT(fsn, control->top_fsn)) { + goto dump_packet; + } + } + } #ifdef SCTP_ASOCLOG_OF_TSNS SCTP_TCB_LOCK_ASSERT(stcb); if (asoc->tsn_in_at >= SCTP_TSN_LOG_SIZE) { asoc->tsn_in_at = 0; asoc->tsn_in_wrapped = 1; } asoc->in_tsnlog[asoc->tsn_in_at].tsn = tsn; asoc->in_tsnlog[asoc->tsn_in_at].strm = strmno; - asoc->in_tsnlog[asoc->tsn_in_at].seq = strmseq; + asoc->in_tsnlog[asoc->tsn_in_at].seq = msg_id; asoc->in_tsnlog[asoc->tsn_in_at].sz = chk_length; asoc->in_tsnlog[asoc->tsn_in_at].flgs = chunk_flags; asoc->in_tsnlog[asoc->tsn_in_at].stcb = (void *)stcb; asoc->in_tsnlog[asoc->tsn_in_at].in_pos = asoc->tsn_in_at; asoc->in_tsnlog[asoc->tsn_in_at].in_out = 1; asoc->tsn_in_at++; #endif + /* + * Before we continue lets validate that we are not being fooled by + * an evil attacker. We can only have Nk chunks based on our TSN + * spread allowed by the mapping array N * 8 bits, so there is no + * way our stream sequence numbers could have wrapped. We of course + * only validate the FIRST fragment so the bit must be set. + */ if ((chunk_flags & SCTP_DATA_FIRST_FRAG) && (TAILQ_EMPTY(&asoc->resetHead)) && (chunk_flags & SCTP_DATA_UNORDERED) == 0 && - SCTP_SSN_GE(asoc->strmin[strmno].last_sequence_delivered, strmseq)) { + SCTP_MSGID_GE(old_data, asoc->strmin[strmno].last_sequence_delivered, msg_id)) { /* The incoming sseq is behind where we last delivered? */ SCTPDBG(SCTP_DEBUG_INDATA1, "EVIL/Broken-Dup S-SEQ:%d delivered:%d from peer, Abort!\n", - strmseq, asoc->strmin[strmno].last_sequence_delivered); + msg_id, asoc->strmin[strmno].last_sequence_delivered); snprintf(msg, sizeof(msg), "Delivered SSN=%4.4x, got TSN=%8.8x, SID=%4.4x, SSN=%4.4x", asoc->strmin[strmno].last_sequence_delivered, - tsn, strmno, strmseq); + tsn, strmno, msg_id); op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_16; sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); *abort_flag = 1; return (0); } /************************************ * From here down we may find ch-> invalid * so its a good idea NOT to use it. *************************************/ - - the_len = (chk_length - sizeof(struct sctp_data_chunk)); + if (nch) { + the_len = (chk_length - sizeof(struct sctp_idata_chunk)); + } else { + the_len = (chk_length - sizeof(struct sctp_data_chunk)); + } if (last_chunk == 0) { - dmbuf = SCTP_M_COPYM(*m, - (offset + sizeof(struct sctp_data_chunk)), - the_len, M_NOWAIT); + if (nch) { + dmbuf = SCTP_M_COPYM(*m, + (offset + sizeof(struct sctp_idata_chunk)), + the_len, M_NOWAIT); + } else { + dmbuf = SCTP_M_COPYM(*m, + (offset + sizeof(struct sctp_data_chunk)), + the_len, M_NOWAIT); + } #ifdef SCTP_MBUF_LOGGING if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) { sctp_log_mbc(dmbuf, SCTP_MBUF_ICOPY); } #endif } else { /* We can steal the last chunk */ int l_len; dmbuf = *m; /* lop off the top part */ - m_adj(dmbuf, (offset + sizeof(struct sctp_data_chunk))); + if (nch) { + m_adj(dmbuf, (offset + sizeof(struct sctp_idata_chunk))); + } else { + m_adj(dmbuf, (offset + sizeof(struct sctp_data_chunk))); + } if (SCTP_BUF_NEXT(dmbuf) == NULL) { l_len = SCTP_BUF_LEN(dmbuf); } else { /* * need to count up the size hopefully does not hit * this to often :-0 */ struct mbuf *lat; l_len = 0; for (lat = dmbuf; lat; lat = SCTP_BUF_NEXT(lat)) { l_len += SCTP_BUF_LEN(lat); } } if (l_len > the_len) { /* Trim the end round bytes off too */ m_adj(dmbuf, -(l_len - the_len)); } } if (dmbuf == NULL) { SCTP_STAT_INCR(sctps_nomem); return (0); } + /* + * Now no matter what we need a control, get one if we don't have + * one (we may have gotten it above when we found the message was + * fragmented + */ + if (control == NULL) { + sctp_alloc_a_readq(stcb, control); + sctp_build_readq_entry_mac(control, stcb, asoc->context, net, tsn, + protocol_id, + strmno, msg_id, + chunk_flags, + NULL, fsn, msg_id); + if (control == NULL) { + SCTP_STAT_INCR(sctps_nomem); + return (0); + } + if ((chunk_flags & SCTP_DATA_NOT_FRAG) == SCTP_DATA_NOT_FRAG) { + control->data = dmbuf; + control->tail_mbuf = NULL; + control->end_added = control->last_frag_seen = control->first_frag_seen = 1; + control->top_fsn = control->fsn_included = fsn; + } + created_control = 1; + } + SCTPDBG(SCTP_DEBUG_XXX, "chunk_flags:0x%x ordered:%d msgid:%d control:%p\n", + chunk_flags, ordered, msg_id, control); if ((chunk_flags & SCTP_DATA_NOT_FRAG) == SCTP_DATA_NOT_FRAG && - asoc->fragmented_delivery_inprogress == 0 && TAILQ_EMPTY(&asoc->resetHead) && ((ordered == 0) || - ((uint16_t) (asoc->strmin[strmno].last_sequence_delivered + 1) == strmseq && + ((uint16_t) (asoc->strmin[strmno].last_sequence_delivered + 1) == msg_id && TAILQ_EMPTY(&asoc->strmin[strmno].inqueue)))) { /* Candidate for express delivery */ /* * Its not fragmented, No PD-API is up, Nothing in the * delivery queue, Its un-ordered OR ordered and the next to * deliver AND nothing else is stuck on the stream queue, * And there is room for it in the socket buffer. Lets just * stuff it up the buffer.... */ - - /* It would be nice to avoid this copy if we could :< */ - sctp_alloc_a_readq(stcb, control); - sctp_build_readq_entry_mac(control, stcb, asoc->context, net, tsn, - protocol_id, - strmno, strmseq, - chunk_flags, - dmbuf); - if (control == NULL) { - goto failed_express_del; - } SCTP_SET_TSN_PRESENT(asoc->nr_mapping_array, gap); if (SCTP_TSN_GT(tsn, asoc->highest_tsn_inside_nr_map)) { asoc->highest_tsn_inside_nr_map = tsn; } + SCTPDBG(SCTP_DEBUG_XXX, "Injecting control:%p to be read (mid:%d)\n", + control, msg_id); + sctp_add_to_readq(stcb->sctp_ep, stcb, control, &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); if ((chunk_flags & SCTP_DATA_UNORDERED) == 0) { /* for ordered, bump what we delivered */ - asoc->strmin[strmno].last_sequence_delivered++; + strm->last_sequence_delivered++; } SCTP_STAT_INCR(sctps_recvexpress); if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_STR_LOGGING_ENABLE) { - sctp_log_strm_del_alt(stcb, tsn, strmseq, strmno, + sctp_log_strm_del_alt(stcb, tsn, msg_id, strmno, SCTP_STR_LOG_FROM_EXPRS_DEL); } control = NULL; - goto finish_express_del; } -failed_express_del: - /* If we reach here this is a new chunk */ - chk = NULL; - control = NULL; - /* Express for fragmented delivery? */ - if ((asoc->fragmented_delivery_inprogress) && - (stcb->asoc.control_pdapi) && - (asoc->str_of_pdapi == strmno) && - (asoc->ssn_of_pdapi == strmseq) - ) { - control = stcb->asoc.control_pdapi; - if ((chunk_flags & SCTP_DATA_FIRST_FRAG) == SCTP_DATA_FIRST_FRAG) { - /* Can't be another first? */ - goto failed_pdapi_express_del; - } - if (tsn == (control->sinfo_tsn + 1)) { - /* Yep, we can add it on */ - int end = 0; - - if (chunk_flags & SCTP_DATA_LAST_FRAG) { - end = 1; - } - if (sctp_append_to_readq(stcb->sctp_ep, stcb, control, dmbuf, end, - tsn, - &stcb->sctp_socket->so_rcv)) { - SCTP_PRINTF("Append fails end:%d\n", end); - goto failed_pdapi_express_del; - } - SCTP_SET_TSN_PRESENT(asoc->nr_mapping_array, gap); - if (SCTP_TSN_GT(tsn, asoc->highest_tsn_inside_nr_map)) { - asoc->highest_tsn_inside_nr_map = tsn; - } - SCTP_STAT_INCR(sctps_recvexpressm); - asoc->tsn_last_delivered = tsn; - asoc->fragment_flags = chunk_flags; - asoc->tsn_of_pdapi_last_delivered = tsn; - asoc->last_flags_delivered = chunk_flags; - asoc->last_strm_seq_delivered = strmseq; - asoc->last_strm_no_delivered = strmno; - if (end) { - /* clean up the flags and such */ - asoc->fragmented_delivery_inprogress = 0; - if ((chunk_flags & SCTP_DATA_UNORDERED) == 0) { - asoc->strmin[strmno].last_sequence_delivered++; - } - stcb->asoc.control_pdapi = NULL; - if (TAILQ_EMPTY(&asoc->reasmqueue) == 0) { - /* - * There could be another message - * ready - */ - need_reasm_check = 1; - } - } - control = NULL; - goto finish_express_del; - } - } -failed_pdapi_express_del: - control = NULL; - if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) { - SCTP_SET_TSN_PRESENT(asoc->nr_mapping_array, gap); - if (SCTP_TSN_GT(tsn, asoc->highest_tsn_inside_nr_map)) { - asoc->highest_tsn_inside_nr_map = tsn; - } - } else { - SCTP_SET_TSN_PRESENT(asoc->mapping_array, gap); - if (SCTP_TSN_GT(tsn, asoc->highest_tsn_inside_map)) { - asoc->highest_tsn_inside_map = tsn; - } - } + /* Now will we need a chunk too? */ if ((chunk_flags & SCTP_DATA_NOT_FRAG) != SCTP_DATA_NOT_FRAG) { sctp_alloc_a_chunk(stcb, chk); if (chk == NULL) { /* No memory so we drop the chunk */ SCTP_STAT_INCR(sctps_nomem); if (last_chunk == 0) { /* we copied it, free the copy */ sctp_m_freem(dmbuf); } return (0); } chk->rec.data.TSN_seq = tsn; chk->no_fr_allowed = 0; - chk->rec.data.stream_seq = strmseq; + chk->rec.data.fsn_num = fsn; + chk->rec.data.stream_seq = msg_id; chk->rec.data.stream_number = strmno; chk->rec.data.payloadtype = protocol_id; chk->rec.data.context = stcb->asoc.context; chk->rec.data.doing_fast_retransmit = 0; chk->rec.data.rcv_flags = chunk_flags; chk->asoc = asoc; chk->send_size = the_len; chk->whoTo = net; + SCTPDBG(SCTP_DEBUG_XXX, "Building ck:%p for control:%p to be read (mid:%d)\n", + chk, + control, msg_id); atomic_add_int(&net->ref_count, 1); chk->data = dmbuf; + } + /* Set the appropriate TSN mark */ + if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) { + SCTP_SET_TSN_PRESENT(asoc->nr_mapping_array, gap); + if (SCTP_TSN_GT(tsn, asoc->highest_tsn_inside_nr_map)) { + asoc->highest_tsn_inside_nr_map = tsn; + } } else { - sctp_alloc_a_readq(stcb, control); - sctp_build_readq_entry_mac(control, stcb, asoc->context, net, tsn, - protocol_id, - strmno, strmseq, - chunk_flags, - dmbuf); - if (control == NULL) { - /* No memory so we drop the chunk */ - SCTP_STAT_INCR(sctps_nomem); - if (last_chunk == 0) { - /* we copied it, free the copy */ - sctp_m_freem(dmbuf); - } - return (0); + SCTP_SET_TSN_PRESENT(asoc->mapping_array, gap); + if (SCTP_TSN_GT(tsn, asoc->highest_tsn_inside_map)) { + asoc->highest_tsn_inside_map = tsn; } - control->length = the_len; } - - /* Mark it as received */ - /* Now queue it where it belongs */ - if (control != NULL) { - /* First a sanity check */ - if (asoc->fragmented_delivery_inprogress) { + /* Now is it complete (i.e. not fragmented)? */ + if ((chunk_flags & SCTP_DATA_NOT_FRAG) == SCTP_DATA_NOT_FRAG) { + /* + * Special check for when streams are resetting. We could be + * more smart about this and check the actual stream to see + * if it is not being reset.. that way we would not create a + * HOLB when amongst streams being reset and those not being + * reset. + * + */ + if (((liste = TAILQ_FIRST(&asoc->resetHead)) != NULL) && + SCTP_TSN_GT(tsn, liste->tsn)) { /* - * Ok, we have a fragmented delivery in progress if - * this chunk is next to deliver OR belongs in our - * view to the reassembly, the peer is evil or - * broken. + * yep its past where we need to reset... go ahead + * and queue it. */ - uint32_t estimate_tsn; - - estimate_tsn = asoc->tsn_last_delivered + 1; - if (TAILQ_EMPTY(&asoc->reasmqueue) && - (estimate_tsn == control->sinfo_tsn)) { - /* Evil/Broke peer */ - sctp_m_freem(control->data); - control->data = NULL; - if (control->whoFrom) { - sctp_free_remote_addr(control->whoFrom); - control->whoFrom = NULL; - } - sctp_free_a_readq(stcb, control); - snprintf(msg, sizeof(msg), "Reas. queue emtpy, got TSN=%8.8x, SID=%4.4x, SSN=%4.4x", - tsn, strmno, strmseq); - op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_17; - sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); - *abort_flag = 1; - if (last_chunk) { - *m = NULL; - } - return (0); + if (TAILQ_EMPTY(&asoc->pending_reply_queue)) { + /* first one on */ + TAILQ_INSERT_TAIL(&asoc->pending_reply_queue, control, next); } else { - if (sctp_does_tsn_belong_to_reasm(asoc, control->sinfo_tsn)) { - sctp_m_freem(control->data); - control->data = NULL; - if (control->whoFrom) { - sctp_free_remote_addr(control->whoFrom); - control->whoFrom = NULL; + struct sctp_queued_to_read *ctlOn, *nctlOn; + unsigned char inserted = 0; + + TAILQ_FOREACH_SAFE(ctlOn, &asoc->pending_reply_queue, next, nctlOn) { + if (SCTP_TSN_GT(control->sinfo_tsn, ctlOn->sinfo_tsn)) { + + continue; + } else { + /* found it */ + TAILQ_INSERT_BEFORE(ctlOn, control, next); + inserted = 1; + break; } - sctp_free_a_readq(stcb, control); - snprintf(msg, sizeof(msg), "PD ongoing, got TSN=%8.8x, SID=%4.4x, SSN=%4.4x", - tsn, strmno, strmseq); - op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_18; - sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); - *abort_flag = 1; - if (last_chunk) { - *m = NULL; - } - return (0); } - } - } else { - /* No PDAPI running */ - if (!TAILQ_EMPTY(&asoc->reasmqueue)) { - /* - * Reassembly queue is NOT empty validate - * that this tsn does not need to be in - * reasembly queue. If it does then our peer - * is broken or evil. - */ - if (sctp_does_tsn_belong_to_reasm(asoc, control->sinfo_tsn)) { - sctp_m_freem(control->data); - control->data = NULL; - if (control->whoFrom) { - sctp_free_remote_addr(control->whoFrom); - control->whoFrom = NULL; - } - sctp_free_a_readq(stcb, control); - snprintf(msg, sizeof(msg), "No PD ongoing, got TSN=%8.8x, SID=%4.4x, SSN=%4.4x", - tsn, strmno, strmseq); - op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_19; - sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); - *abort_flag = 1; - if (last_chunk) { - *m = NULL; - } - return (0); + if (inserted == 0) { + /* + * must be put at end, use prevP + * (all setup from loop) to setup + * nextP. + */ + TAILQ_INSERT_TAIL(&asoc->pending_reply_queue, control, next); } } + goto finish_express_del; } - /* ok, if we reach here we have passed the sanity checks */ if (chunk_flags & SCTP_DATA_UNORDERED) { /* queue directly into socket buffer */ + SCTPDBG(SCTP_DEBUG_XXX, "Unordered data to be read control:%p msg_id:%d\n", + control, msg_id); sctp_mark_non_revokable(asoc, control->sinfo_tsn); sctp_add_to_readq(stcb->sctp_ep, stcb, control, - &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); - } else { - /* - * Special check for when streams are resetting. We - * could be more smart about this and check the - * actual stream to see if it is not being reset.. - * that way we would not create a HOLB when amongst - * streams being reset and those not being reset. - * - * We take complete messages that have a stream reset - * intervening (aka the TSN is after where our - * cum-ack needs to be) off and put them on a - * pending_reply_queue. The reassembly ones we do - * not have to worry about since they are all sorted - * and proceessed by TSN order. It is only the - * singletons I must worry about. - */ - if (((liste = TAILQ_FIRST(&asoc->resetHead)) != NULL) && - SCTP_TSN_GT(tsn, liste->tsn)) { - /* - * yep its past where we need to reset... go - * ahead and queue it. - */ - if (TAILQ_EMPTY(&asoc->pending_reply_queue)) { - /* first one on */ - TAILQ_INSERT_TAIL(&asoc->pending_reply_queue, control, next); - } else { - struct sctp_queued_to_read *ctlOn, - *nctlOn; - unsigned char inserted = 0; + &stcb->sctp_socket->so_rcv, 1, + SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); - TAILQ_FOREACH_SAFE(ctlOn, &asoc->pending_reply_queue, next, nctlOn) { - if (SCTP_TSN_GT(control->sinfo_tsn, ctlOn->sinfo_tsn)) { - continue; - } else { - /* found it */ - TAILQ_INSERT_BEFORE(ctlOn, control, next); - inserted = 1; - break; - } - } - if (inserted == 0) { - /* - * must be put at end, use - * prevP (all setup from - * loop) to setup nextP. - */ - TAILQ_INSERT_TAIL(&asoc->pending_reply_queue, control, next); - } + } else { + SCTPDBG(SCTP_DEBUG_XXX, "Queue control:%p for reordering msg_id:%d\n", control, + msg_id); + sctp_queue_data_to_stream(stcb, strm, asoc, control, abort_flag, &need_reasm_check); + if (*abort_flag) { + if (last_chunk) { + *m = NULL; } - } else { - sctp_queue_data_to_stream(stcb, asoc, control, abort_flag); - if (*abort_flag) { - if (last_chunk) { - *m = NULL; - } - return (0); - } + return (0); } } - } else { - /* Into the re-assembly queue */ - sctp_queue_data_for_reasm(stcb, asoc, chk, abort_flag); - if (*abort_flag) { - /* - * the assoc is now gone and chk was put onto the - * reasm queue, which has all been freed. - */ - if (last_chunk) { - *m = NULL; - } - return (0); + goto finish_express_del; + } + /* If we reach here its a reassembly */ + need_reasm_check = 1; + SCTPDBG(SCTP_DEBUG_XXX, + "Queue data to stream for reasm control:%p msg_id:%d\n", + control, msg_id); + sctp_queue_data_for_reasm(stcb, asoc, strm, control, chk, created_control, abort_flag, tsn); + if (*abort_flag) { + /* + * the assoc is now gone and chk was put onto the reasm + * queue, which has all been freed. + */ + if (last_chunk) { + *m = NULL; } + return (0); } finish_express_del: + /* Here we tidy up things */ if (tsn == (asoc->cumulative_tsn + 1)) { /* Update cum-ack */ asoc->cumulative_tsn = tsn; } if (last_chunk) { *m = NULL; } if (ordered) { SCTP_STAT_INCR_COUNTER64(sctps_inorderchunks); } else { SCTP_STAT_INCR_COUNTER64(sctps_inunorderchunks); } SCTP_STAT_INCR(sctps_recvdata); /* Set it present please */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_STR_LOGGING_ENABLE) { - sctp_log_strm_del_alt(stcb, tsn, strmseq, strmno, SCTP_STR_LOG_FROM_MARK_TSN); + sctp_log_strm_del_alt(stcb, tsn, msg_id, strmno, SCTP_STR_LOG_FROM_MARK_TSN); } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MAP_LOGGING_ENABLE) { sctp_log_map(asoc->mapping_array_base_tsn, asoc->cumulative_tsn, asoc->highest_tsn_inside_map, SCTP_MAP_PREPARE_SLIDE); } /* check the special flag for stream resets */ if (((liste = TAILQ_FIRST(&asoc->resetHead)) != NULL) && SCTP_TSN_GE(asoc->cumulative_tsn, liste->tsn)) { /* * we have finished working through the backlogged TSN's now * time to reset streams. 1: call reset function. 2: free * pending_reply space 3: distribute any chunks in * pending_reply_queue. */ struct sctp_queued_to_read *ctl, *nctl; sctp_reset_in_stream(stcb, liste->number_entries, liste->list_of_streams); TAILQ_REMOVE(&asoc->resetHead, liste, next_resp); sctp_send_deferred_reset_response(stcb, liste, SCTP_STREAM_RESET_RESULT_PERFORMED); SCTP_FREE(liste, SCTP_M_STRESET); /* sa_ignore FREED_MEMORY */ liste = TAILQ_FIRST(&asoc->resetHead); if (TAILQ_EMPTY(&asoc->resetHead)) { /* All can be removed */ TAILQ_FOREACH_SAFE(ctl, &asoc->pending_reply_queue, next, nctl) { TAILQ_REMOVE(&asoc->pending_reply_queue, ctl, next); - sctp_queue_data_to_stream(stcb, asoc, ctl, abort_flag); + sctp_queue_data_to_stream(stcb, strm, asoc, ctl, abort_flag, &need_reasm_check); if (*abort_flag) { return (0); } } } else { TAILQ_FOREACH_SAFE(ctl, &asoc->pending_reply_queue, next, nctl) { if (SCTP_TSN_GT(ctl->sinfo_tsn, liste->tsn)) { break; } /* * if ctl->sinfo_tsn is <= liste->tsn we can * process it which is the NOT of * ctl->sinfo_tsn > liste->tsn */ TAILQ_REMOVE(&asoc->pending_reply_queue, ctl, next); - sctp_queue_data_to_stream(stcb, asoc, ctl, abort_flag); + sctp_queue_data_to_stream(stcb, strm, asoc, ctl, abort_flag, &need_reasm_check); if (*abort_flag) { return (0); } } } /* * Now service re-assembly to pick up anything that has been * held on reassembly queue? */ - sctp_deliver_reasm_check(stcb, asoc); + (void)sctp_deliver_reasm_check(stcb, asoc, strm); need_reasm_check = 0; } if (need_reasm_check) { /* Another one waits ? */ - sctp_deliver_reasm_check(stcb, asoc); + (void)sctp_deliver_reasm_check(stcb, asoc, strm); } return (1); } static const int8_t sctp_map_lookup_tab[256] = { 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 5, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 6, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 5, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 7, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 5, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 6, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 5, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 8 }; void sctp_slide_mapping_arrays(struct sctp_tcb *stcb) { /* * Now we also need to check the mapping array in a couple of ways. * 1) Did we move the cum-ack point? * * When you first glance at this you might think that all entries that * make up the postion of the cum-ack would be in the nr-mapping * array only.. i.e. things up to the cum-ack are always * deliverable. Thats true with one exception, when its a fragmented * message we may not deliver the data until some threshold (or all * of it) is in place. So we must OR the nr_mapping_array and * mapping_array to get a true picture of the cum-ack. */ struct sctp_association *asoc; int at; uint8_t val; int slide_from, slide_end, lgap, distance; uint32_t old_cumack, old_base, old_highest, highest_tsn; asoc = &stcb->asoc; old_cumack = asoc->cumulative_tsn; old_base = asoc->mapping_array_base_tsn; old_highest = asoc->highest_tsn_inside_map; /* * We could probably improve this a small bit by calculating the * offset of the current cum-ack as the starting point. */ at = 0; for (slide_from = 0; slide_from < stcb->asoc.mapping_array_size; slide_from++) { val = asoc->nr_mapping_array[slide_from] | asoc->mapping_array[slide_from]; if (val == 0xff) { at += 8; } else { /* there is a 0 bit */ at += sctp_map_lookup_tab[val]; break; } } asoc->cumulative_tsn = asoc->mapping_array_base_tsn + (at - 1); if (SCTP_TSN_GT(asoc->cumulative_tsn, asoc->highest_tsn_inside_map) && SCTP_TSN_GT(asoc->cumulative_tsn, asoc->highest_tsn_inside_nr_map)) { #ifdef INVARIANTS panic("huh, cumack 0x%x greater than high-tsn 0x%x in map", asoc->cumulative_tsn, asoc->highest_tsn_inside_map); #else SCTP_PRINTF("huh, cumack 0x%x greater than high-tsn 0x%x in map - should panic?\n", asoc->cumulative_tsn, asoc->highest_tsn_inside_map); sctp_print_mapping_array(asoc); if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MAP_LOGGING_ENABLE) { sctp_log_map(0, 6, asoc->highest_tsn_inside_map, SCTP_MAP_SLIDE_RESULT); } asoc->highest_tsn_inside_map = asoc->cumulative_tsn; asoc->highest_tsn_inside_nr_map = asoc->cumulative_tsn; #endif } if (SCTP_TSN_GT(asoc->highest_tsn_inside_nr_map, asoc->highest_tsn_inside_map)) { highest_tsn = asoc->highest_tsn_inside_nr_map; } else { highest_tsn = asoc->highest_tsn_inside_map; } if ((asoc->cumulative_tsn == highest_tsn) && (at >= 8)) { /* The complete array was completed by a single FR */ /* highest becomes the cum-ack */ int clr; #ifdef INVARIANTS unsigned int i; #endif /* clear the array */ clr = ((at + 7) >> 3); if (clr > asoc->mapping_array_size) { clr = asoc->mapping_array_size; } memset(asoc->mapping_array, 0, clr); memset(asoc->nr_mapping_array, 0, clr); #ifdef INVARIANTS for (i = 0; i < asoc->mapping_array_size; i++) { if ((asoc->mapping_array[i]) || (asoc->nr_mapping_array[i])) { SCTP_PRINTF("Error Mapping array's not clean at clear\n"); sctp_print_mapping_array(asoc); } } #endif asoc->mapping_array_base_tsn = asoc->cumulative_tsn + 1; asoc->highest_tsn_inside_nr_map = asoc->highest_tsn_inside_map = asoc->cumulative_tsn; } else if (at >= 8) { /* we can slide the mapping array down */ /* slide_from holds where we hit the first NON 0xff byte */ /* * now calculate the ceiling of the move using our highest * TSN value */ SCTP_CALC_TSN_TO_GAP(lgap, highest_tsn, asoc->mapping_array_base_tsn); slide_end = (lgap >> 3); if (slide_end < slide_from) { sctp_print_mapping_array(asoc); #ifdef INVARIANTS panic("impossible slide"); #else SCTP_PRINTF("impossible slide lgap:%x slide_end:%x slide_from:%x? at:%d\n", lgap, slide_end, slide_from, at); return; #endif } if (slide_end > asoc->mapping_array_size) { #ifdef INVARIANTS panic("would overrun buffer"); #else SCTP_PRINTF("Gak, would have overrun map end:%d slide_end:%d\n", asoc->mapping_array_size, slide_end); slide_end = asoc->mapping_array_size; #endif } distance = (slide_end - slide_from) + 1; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MAP_LOGGING_ENABLE) { sctp_log_map(old_base, old_cumack, old_highest, SCTP_MAP_PREPARE_SLIDE); sctp_log_map((uint32_t) slide_from, (uint32_t) slide_end, (uint32_t) lgap, SCTP_MAP_SLIDE_FROM); } if (distance + slide_from > asoc->mapping_array_size || distance < 0) { /* * Here we do NOT slide forward the array so that * hopefully when more data comes in to fill it up * we will be able to slide it forward. Really I * don't think this should happen :-0 */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MAP_LOGGING_ENABLE) { sctp_log_map((uint32_t) distance, (uint32_t) slide_from, (uint32_t) asoc->mapping_array_size, SCTP_MAP_SLIDE_NONE); } } else { int ii; for (ii = 0; ii < distance; ii++) { asoc->mapping_array[ii] = asoc->mapping_array[slide_from + ii]; asoc->nr_mapping_array[ii] = asoc->nr_mapping_array[slide_from + ii]; } for (ii = distance; ii < asoc->mapping_array_size; ii++) { asoc->mapping_array[ii] = 0; asoc->nr_mapping_array[ii] = 0; } if (asoc->highest_tsn_inside_map + 1 == asoc->mapping_array_base_tsn) { asoc->highest_tsn_inside_map += (slide_from << 3); } if (asoc->highest_tsn_inside_nr_map + 1 == asoc->mapping_array_base_tsn) { asoc->highest_tsn_inside_nr_map += (slide_from << 3); } asoc->mapping_array_base_tsn += (slide_from << 3); if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MAP_LOGGING_ENABLE) { sctp_log_map(asoc->mapping_array_base_tsn, asoc->cumulative_tsn, asoc->highest_tsn_inside_map, SCTP_MAP_SLIDE_RESULT); } } } } void sctp_sack_check(struct sctp_tcb *stcb, int was_a_gap) { struct sctp_association *asoc; uint32_t highest_tsn; asoc = &stcb->asoc; if (SCTP_TSN_GT(asoc->highest_tsn_inside_nr_map, asoc->highest_tsn_inside_map)) { highest_tsn = asoc->highest_tsn_inside_nr_map; } else { highest_tsn = asoc->highest_tsn_inside_map; } /* * Now we need to see if we need to queue a sack or just start the * timer (if allowed). */ if (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_SENT) { /* * Ok special case, in SHUTDOWN-SENT case. here we maker * sure SACK timer is off and instead send a SHUTDOWN and a * SACK */ if (SCTP_OS_TIMER_PENDING(&stcb->asoc.dack_timer.timer)) { sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL, - SCTP_FROM_SCTP_INDATA + SCTP_LOC_20); + SCTP_FROM_SCTP_INDATA + SCTP_LOC_17); } sctp_send_shutdown(stcb, ((stcb->asoc.alternate) ? stcb->asoc.alternate : stcb->asoc.primary_destination)); sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED); } else { int is_a_gap; /* is there a gap now ? */ is_a_gap = SCTP_TSN_GT(highest_tsn, stcb->asoc.cumulative_tsn); /* * CMT DAC algorithm: increase number of packets received * since last ack */ stcb->asoc.cmt_dac_pkts_rcvd++; if ((stcb->asoc.send_sack == 1) || /* We need to send a * SACK */ ((was_a_gap) && (is_a_gap == 0)) || /* was a gap, but no * longer is one */ (stcb->asoc.numduptsns) || /* we have dup's */ (is_a_gap) || /* is still a gap */ (stcb->asoc.delayed_ack == 0) || /* Delayed sack disabled */ (stcb->asoc.data_pkts_seen >= stcb->asoc.sack_freq) /* hit limit of pkts */ ) { if ((stcb->asoc.sctp_cmt_on_off > 0) && (SCTP_BASE_SYSCTL(sctp_cmt_use_dac)) && (stcb->asoc.send_sack == 0) && (stcb->asoc.numduptsns == 0) && (stcb->asoc.delayed_ack) && (!SCTP_OS_TIMER_PENDING(&stcb->asoc.dack_timer.timer))) { /* * CMT DAC algorithm: With CMT, delay acks * even in the face of * * reordering. Therefore, if acks that do not * have to be sent because of the above * reasons, will be delayed. That is, acks * that would have been sent due to gap * reports will be delayed with DAC. Start * the delayed ack timer. */ sctp_timer_start(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL); } else { /* * Ok we must build a SACK since the timer * is pending, we got our first packet OR * there are gaps or duplicates. */ (void)SCTP_OS_TIMER_STOP(&stcb->asoc.dack_timer.timer); sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED); } } else { if (!SCTP_OS_TIMER_PENDING(&stcb->asoc.dack_timer.timer)) { sctp_timer_start(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL); } } } } -void -sctp_service_queues(struct sctp_tcb *stcb, struct sctp_association *asoc) -{ - struct sctp_tmit_chunk *chk; - uint32_t tsize, pd_point; - uint16_t nxt_todel; - - if (asoc->fragmented_delivery_inprogress) { - sctp_service_reassembly(stcb, asoc); - } - /* Can we proceed further, i.e. the PD-API is complete */ - if (asoc->fragmented_delivery_inprogress) { - /* no */ - return; - } - /* - * Now is there some other chunk I can deliver from the reassembly - * queue. - */ -doit_again: - chk = TAILQ_FIRST(&asoc->reasmqueue); - if (chk == NULL) { - asoc->size_on_reasm_queue = 0; - asoc->cnt_on_reasm_queue = 0; - return; - } - nxt_todel = asoc->strmin[chk->rec.data.stream_number].last_sequence_delivered + 1; - if ((chk->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG) && - ((nxt_todel == chk->rec.data.stream_seq) || - (chk->rec.data.rcv_flags & SCTP_DATA_UNORDERED))) { - /* - * Yep the first one is here. We setup to start reception, - * by backing down the TSN just in case we can't deliver. - */ - - /* - * Before we start though either all of the message should - * be here or the socket buffer max or nothing on the - * delivery queue and something can be delivered. - */ - if (stcb->sctp_socket) { - pd_point = min(SCTP_SB_LIMIT_RCV(stcb->sctp_socket) >> SCTP_PARTIAL_DELIVERY_SHIFT, - stcb->sctp_ep->partial_delivery_point); - } else { - pd_point = stcb->sctp_ep->partial_delivery_point; - } - if (sctp_is_all_msg_on_reasm(asoc, &tsize) || (tsize >= pd_point)) { - asoc->fragmented_delivery_inprogress = 1; - asoc->tsn_last_delivered = chk->rec.data.TSN_seq - 1; - asoc->str_of_pdapi = chk->rec.data.stream_number; - asoc->ssn_of_pdapi = chk->rec.data.stream_seq; - asoc->pdapi_ppid = chk->rec.data.payloadtype; - asoc->fragment_flags = chk->rec.data.rcv_flags; - sctp_service_reassembly(stcb, asoc); - if (asoc->fragmented_delivery_inprogress == 0) { - goto doit_again; - } - } - } -} - int sctp_process_data(struct mbuf **mm, int iphlen, int *offset, int length, struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sctp_nets *net, uint32_t * high_tsn) { - struct sctp_data_chunk *ch, chunk_buf; + struct sctp_chunkhdr *ch, chunk_buf; struct sctp_association *asoc; int num_chunks = 0; /* number of control chunks processed */ int stop_proc = 0; int chk_length, break_flag, last_chunk; int abort_flag = 0, was_a_gap; struct mbuf *m; uint32_t highest_tsn; /* set the rwnd */ sctp_set_rwnd(stcb, &stcb->asoc); m = *mm; SCTP_TCB_LOCK_ASSERT(stcb); asoc = &stcb->asoc; if (SCTP_TSN_GT(asoc->highest_tsn_inside_nr_map, asoc->highest_tsn_inside_map)) { highest_tsn = asoc->highest_tsn_inside_nr_map; } else { highest_tsn = asoc->highest_tsn_inside_map; } was_a_gap = SCTP_TSN_GT(highest_tsn, stcb->asoc.cumulative_tsn); /* * setup where we got the last DATA packet from for any SACK that * may need to go out. Don't bump the net. This is done ONLY when a * chunk is assigned. */ asoc->last_data_chunk_from = net; /*- * Now before we proceed we must figure out if this is a wasted * cluster... i.e. it is a small packet sent in and yet the driver * underneath allocated a full cluster for it. If so we must copy it * to a smaller mbuf and free up the cluster mbuf. This will help * with cluster starvation. Note for __Panda__ we don't do this * since it has clusters all the way down to 64 bytes. */ if (SCTP_BUF_LEN(m) < (long)MLEN && SCTP_BUF_NEXT(m) == NULL) { /* we only handle mbufs that are singletons.. not chains */ m = sctp_get_mbuf_for_msg(SCTP_BUF_LEN(m), 0, M_NOWAIT, 1, MT_DATA); if (m) { /* ok lets see if we can copy the data up */ caddr_t *from, *to; /* get the pointers and copy */ to = mtod(m, caddr_t *); from = mtod((*mm), caddr_t *); memcpy(to, from, SCTP_BUF_LEN((*mm))); /* copy the length and free up the old */ SCTP_BUF_LEN(m) = SCTP_BUF_LEN((*mm)); sctp_m_freem(*mm); /* sucess, back copy */ *mm = m; } else { /* We are in trouble in the mbuf world .. yikes */ m = *mm; } } /* get pointer to the first chunk header */ - ch = (struct sctp_data_chunk *)sctp_m_getptr(m, *offset, - sizeof(struct sctp_data_chunk), (uint8_t *) & chunk_buf); + ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, *offset, + sizeof(struct sctp_chunkhdr), (uint8_t *) & chunk_buf); if (ch == NULL) { return (1); } /* * process all DATA chunks... */ *high_tsn = asoc->cumulative_tsn; break_flag = 0; asoc->data_pkts_seen++; while (stop_proc == 0) { /* validate chunk length */ - chk_length = ntohs(ch->ch.chunk_length); + chk_length = ntohs(ch->chunk_length); if (length - *offset < chk_length) { /* all done, mutulated chunk */ stop_proc = 1; continue; } - if (ch->ch.chunk_type == SCTP_DATA) { - if ((size_t)chk_length < sizeof(struct sctp_data_chunk)) { + if ((asoc->idata_supported == 1) && + (ch->chunk_type == SCTP_DATA)) { + struct mbuf *op_err; + char msg[SCTP_DIAG_INFO_LEN]; + + snprintf(msg, sizeof(msg), "I-DATA chunk received when DATA was negotiated"); + op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); + stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_18; + sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED); + return (2); + } + if ((asoc->idata_supported == 0) && + (ch->chunk_type == SCTP_IDATA)) { + struct mbuf *op_err; + char msg[SCTP_DIAG_INFO_LEN]; + + snprintf(msg, sizeof(msg), "DATA chunk received when I-DATA was negotiated"); + op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); + stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_19; + sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED); + return (2); + } + if ((ch->chunk_type == SCTP_DATA) || + (ch->chunk_type == SCTP_IDATA)) { + int clen; + + if (ch->chunk_type == SCTP_DATA) { + clen = sizeof(struct sctp_data_chunk); + } else { + clen = sizeof(struct sctp_idata_chunk); + } + if ((size_t)chk_length < clen) { /* * Need to send an abort since we had a * invalid data chunk. */ struct mbuf *op_err; char msg[SCTP_DIAG_INFO_LEN]; snprintf(msg, sizeof(msg), "DATA chunk of length %d", chk_length); op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_21; + stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_20; sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED); return (2); } - if ((size_t)chk_length == sizeof(struct sctp_data_chunk)) { - /* - * Need to send an abort since we had an - * empty data chunk. - */ - struct mbuf *op_err; - - op_err = sctp_generate_no_user_data_cause(ch->dp.tsn); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_22; - sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED); - return (2); - } #ifdef SCTP_AUDITING_ENABLED sctp_audit_log(0xB1, 0); #endif if (SCTP_SIZE32(chk_length) == (length - *offset)) { last_chunk = 1; } else { last_chunk = 0; } - if (sctp_process_a_data_chunk(stcb, asoc, mm, *offset, ch, + if (sctp_process_a_data_chunk(stcb, asoc, mm, *offset, chk_length, net, high_tsn, &abort_flag, &break_flag, - last_chunk)) { + last_chunk, ch->chunk_type)) { num_chunks++; } if (abort_flag) return (2); if (break_flag) { /* * Set because of out of rwnd space and no * drop rep space left. */ stop_proc = 1; continue; } } else { /* not a data chunk in the data region */ - switch (ch->ch.chunk_type) { + switch (ch->chunk_type) { case SCTP_INITIATION: case SCTP_INITIATION_ACK: case SCTP_SELECTIVE_ACK: case SCTP_NR_SELECTIVE_ACK: case SCTP_HEARTBEAT_REQUEST: case SCTP_HEARTBEAT_ACK: case SCTP_ABORT_ASSOCIATION: case SCTP_SHUTDOWN: case SCTP_SHUTDOWN_ACK: case SCTP_OPERATION_ERROR: case SCTP_COOKIE_ECHO: case SCTP_COOKIE_ACK: case SCTP_ECN_ECHO: case SCTP_ECN_CWR: case SCTP_SHUTDOWN_COMPLETE: case SCTP_AUTHENTICATION: case SCTP_ASCONF_ACK: case SCTP_PACKET_DROPPED: case SCTP_STREAM_RESET: case SCTP_FORWARD_CUM_TSN: case SCTP_ASCONF: /* * Now, what do we do with KNOWN chunks that * are NOT in the right place? * * For now, I do nothing but ignore them. We * may later want to add sysctl stuff to * switch out and do either an ABORT() or * possibly process them. */ if (SCTP_BASE_SYSCTL(sctp_strict_data_order)) { struct mbuf *op_err; char msg[SCTP_DIAG_INFO_LEN]; snprintf(msg, sizeof(msg), "DATA chunk followed by chunk of type %2.2x", - ch->ch.chunk_type); + ch->chunk_type); op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED); return (2); } break; default: /* unknown chunk type, use bit rules */ - if (ch->ch.chunk_type & 0x40) { + if (ch->chunk_type & 0x40) { /* Add a error report to the queue */ struct mbuf *op_err; struct sctp_gen_error_cause *cause; op_err = sctp_get_mbuf_for_msg(sizeof(struct sctp_gen_error_cause), 0, M_NOWAIT, 1, MT_DATA); if (op_err != NULL) { cause = mtod(op_err, struct sctp_gen_error_cause *); cause->code = htons(SCTP_CAUSE_UNRECOG_CHUNK); cause->length = htons((uint16_t) (chk_length + sizeof(struct sctp_gen_error_cause))); SCTP_BUF_LEN(op_err) = sizeof(struct sctp_gen_error_cause); SCTP_BUF_NEXT(op_err) = SCTP_M_COPYM(m, *offset, chk_length, M_NOWAIT); if (SCTP_BUF_NEXT(op_err) != NULL) { sctp_queue_op_err(stcb, op_err); } else { sctp_m_freem(op_err); } } } - if ((ch->ch.chunk_type & 0x80) == 0) { + if ((ch->chunk_type & 0x80) == 0) { /* discard the rest of this packet */ stop_proc = 1; } /* else skip this bad chunk and * continue... */ break; } /* switch of chunk type */ } *offset += SCTP_SIZE32(chk_length); if ((*offset >= length) || stop_proc) { /* no more data left in the mbuf chain */ stop_proc = 1; continue; } - ch = (struct sctp_data_chunk *)sctp_m_getptr(m, *offset, - sizeof(struct sctp_data_chunk), (uint8_t *) & chunk_buf); + ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, *offset, + sizeof(struct sctp_chunkhdr), (uint8_t *) & chunk_buf); if (ch == NULL) { *offset = length; stop_proc = 1; continue; } } if (break_flag) { /* * we need to report rwnd overrun drops. */ sctp_send_packet_dropped(stcb, net, *mm, length, iphlen, 0); } if (num_chunks) { /* * Did we get data, if so update the time for auto-close and * give peer credit for being alive. */ SCTP_STAT_INCR(sctps_recvpktwithdata); if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_THRESHOLD_LOGGING) { sctp_misc_ints(SCTP_THRESHOLD_CLEAR, stcb->asoc.overall_error_count, 0, SCTP_FROM_SCTP_INDATA, __LINE__); } stcb->asoc.overall_error_count = 0; (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_last_rcvd); } /* now service all of the reassm queue if needed */ - if (!(TAILQ_EMPTY(&asoc->reasmqueue))) - sctp_service_queues(stcb, asoc); - if (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_SENT) { /* Assure that we ack right away */ stcb->asoc.send_sack = 1; } /* Start a sack timer or QUEUE a SACK for sending */ sctp_sack_check(stcb, was_a_gap); return (0); } static int sctp_process_segment_range(struct sctp_tcb *stcb, struct sctp_tmit_chunk **p_tp1, uint32_t last_tsn, uint16_t frag_strt, uint16_t frag_end, int nr_sacking, int *num_frs, uint32_t * biggest_newly_acked_tsn, uint32_t * this_sack_lowest_newack, int *rto_ok) { struct sctp_tmit_chunk *tp1; unsigned int theTSN; int j, wake_him = 0, circled = 0; /* Recover the tp1 we last saw */ tp1 = *p_tp1; if (tp1 == NULL) { tp1 = TAILQ_FIRST(&stcb->asoc.sent_queue); } for (j = frag_strt; j <= frag_end; j++) { theTSN = j + last_tsn; while (tp1) { if (tp1->rec.data.doing_fast_retransmit) (*num_frs) += 1; /*- * CMT: CUCv2 algorithm. For each TSN being * processed from the sent queue, track the * next expected pseudo-cumack, or * rtx_pseudo_cumack, if required. Separate * cumack trackers for first transmissions, * and retransmissions. */ if ((tp1->sent < SCTP_DATAGRAM_RESEND) && (tp1->whoTo->find_pseudo_cumack == 1) && (tp1->snd_count == 1)) { tp1->whoTo->pseudo_cumack = tp1->rec.data.TSN_seq; tp1->whoTo->find_pseudo_cumack = 0; } if ((tp1->sent < SCTP_DATAGRAM_RESEND) && (tp1->whoTo->find_rtx_pseudo_cumack == 1) && (tp1->snd_count > 1)) { tp1->whoTo->rtx_pseudo_cumack = tp1->rec.data.TSN_seq; tp1->whoTo->find_rtx_pseudo_cumack = 0; } if (tp1->rec.data.TSN_seq == theTSN) { if (tp1->sent != SCTP_DATAGRAM_UNSENT) { /*- * must be held until * cum-ack passes */ if (tp1->sent < SCTP_DATAGRAM_RESEND) { /*- * If it is less than RESEND, it is * now no-longer in flight. * Higher values may already be set * via previous Gap Ack Blocks... * i.e. ACKED or RESEND. */ if (SCTP_TSN_GT(tp1->rec.data.TSN_seq, *biggest_newly_acked_tsn)) { *biggest_newly_acked_tsn = tp1->rec.data.TSN_seq; } /*- * CMT: SFR algo (and HTNA) - set * saw_newack to 1 for dest being * newly acked. update * this_sack_highest_newack if * appropriate. */ if (tp1->rec.data.chunk_was_revoked == 0) tp1->whoTo->saw_newack = 1; if (SCTP_TSN_GT(tp1->rec.data.TSN_seq, tp1->whoTo->this_sack_highest_newack)) { tp1->whoTo->this_sack_highest_newack = tp1->rec.data.TSN_seq; } /*- * CMT DAC algo: also update * this_sack_lowest_newack */ if (*this_sack_lowest_newack == 0) { if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SACK_LOGGING_ENABLE) { sctp_log_sack(*this_sack_lowest_newack, last_tsn, tp1->rec.data.TSN_seq, 0, 0, SCTP_LOG_TSN_ACKED); } *this_sack_lowest_newack = tp1->rec.data.TSN_seq; } /*- * CMT: CUCv2 algorithm. If (rtx-)pseudo-cumack for corresp * dest is being acked, then we have a new (rtx-)pseudo-cumack. Set * new_(rtx_)pseudo_cumack to TRUE so that the cwnd for this dest can be * updated. Also trigger search for the next expected (rtx-)pseudo-cumack. * Separate pseudo_cumack trackers for first transmissions and * retransmissions. */ if (tp1->rec.data.TSN_seq == tp1->whoTo->pseudo_cumack) { if (tp1->rec.data.chunk_was_revoked == 0) { tp1->whoTo->new_pseudo_cumack = 1; } tp1->whoTo->find_pseudo_cumack = 1; } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_CWND_LOGGING_ENABLE) { sctp_log_cwnd(stcb, tp1->whoTo, tp1->rec.data.TSN_seq, SCTP_CWND_LOG_FROM_SACK); } if (tp1->rec.data.TSN_seq == tp1->whoTo->rtx_pseudo_cumack) { if (tp1->rec.data.chunk_was_revoked == 0) { tp1->whoTo->new_pseudo_cumack = 1; } tp1->whoTo->find_rtx_pseudo_cumack = 1; } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SACK_LOGGING_ENABLE) { sctp_log_sack(*biggest_newly_acked_tsn, last_tsn, tp1->rec.data.TSN_seq, frag_strt, frag_end, SCTP_LOG_TSN_ACKED); } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FLIGHT_LOGGING_ENABLE) { sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_GAP, tp1->whoTo->flight_size, tp1->book_size, (uint32_t) (uintptr_t) tp1->whoTo, tp1->rec.data.TSN_seq); } sctp_flight_size_decrease(tp1); if (stcb->asoc.cc_functions.sctp_cwnd_update_tsn_acknowledged) { (*stcb->asoc.cc_functions.sctp_cwnd_update_tsn_acknowledged) (tp1->whoTo, tp1); } sctp_total_flight_decrease(stcb, tp1); tp1->whoTo->net_ack += tp1->send_size; if (tp1->snd_count < 2) { /*- * True non-retransmited chunk */ tp1->whoTo->net_ack2 += tp1->send_size; /*- * update RTO too ? */ if (tp1->do_rtt) { if (*rto_ok) { tp1->whoTo->RTO = sctp_calculate_rto(stcb, &stcb->asoc, tp1->whoTo, &tp1->sent_rcv_time, sctp_align_safe_nocopy, SCTP_RTT_FROM_DATA); *rto_ok = 0; } if (tp1->whoTo->rto_needed == 0) { tp1->whoTo->rto_needed = 1; } tp1->do_rtt = 0; } } } if (tp1->sent <= SCTP_DATAGRAM_RESEND) { if (SCTP_TSN_GT(tp1->rec.data.TSN_seq, stcb->asoc.this_sack_highest_gap)) { stcb->asoc.this_sack_highest_gap = tp1->rec.data.TSN_seq; } if (tp1->sent == SCTP_DATAGRAM_RESEND) { sctp_ucount_decr(stcb->asoc.sent_queue_retran_cnt); #ifdef SCTP_AUDITING_ENABLED sctp_audit_log(0xB2, (stcb->asoc.sent_queue_retran_cnt & 0x000000ff)); #endif } } /*- * All chunks NOT UNSENT fall through here and are marked * (leave PR-SCTP ones that are to skip alone though) */ if ((tp1->sent != SCTP_FORWARD_TSN_SKIP) && (tp1->sent != SCTP_DATAGRAM_NR_ACKED)) { tp1->sent = SCTP_DATAGRAM_MARKED; } if (tp1->rec.data.chunk_was_revoked) { /* deflate the cwnd */ tp1->whoTo->cwnd -= tp1->book_size; tp1->rec.data.chunk_was_revoked = 0; } /* NR Sack code here */ if (nr_sacking && (tp1->sent != SCTP_DATAGRAM_NR_ACKED)) { if (stcb->asoc.strmout[tp1->rec.data.stream_number].chunks_on_queues > 0) { stcb->asoc.strmout[tp1->rec.data.stream_number].chunks_on_queues--; #ifdef INVARIANTS } else { panic("No chunks on the queues for sid %u.", tp1->rec.data.stream_number); #endif } if ((stcb->asoc.strmout[tp1->rec.data.stream_number].chunks_on_queues == 0) && (stcb->asoc.strmout[tp1->rec.data.stream_number].state == SCTP_STREAM_RESET_PENDING) && TAILQ_EMPTY(&stcb->asoc.strmout[tp1->rec.data.stream_number].outqueue)) { stcb->asoc.trigger_reset = 1; } tp1->sent = SCTP_DATAGRAM_NR_ACKED; if (tp1->data) { /* * sa_ignore * NO_NULL_CHK */ sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1); sctp_m_freem(tp1->data); tp1->data = NULL; } wake_him++; } } break; } /* if (tp1->TSN_seq == theTSN) */ if (SCTP_TSN_GT(tp1->rec.data.TSN_seq, theTSN)) { break; } tp1 = TAILQ_NEXT(tp1, sctp_next); if ((tp1 == NULL) && (circled == 0)) { circled++; tp1 = TAILQ_FIRST(&stcb->asoc.sent_queue); } } /* end while (tp1) */ if (tp1 == NULL) { circled = 0; tp1 = TAILQ_FIRST(&stcb->asoc.sent_queue); } /* In case the fragments were not in order we must reset */ } /* end for (j = fragStart */ *p_tp1 = tp1; return (wake_him); /* Return value only used for nr-sack */ } static int sctp_handle_segments(struct mbuf *m, int *offset, struct sctp_tcb *stcb, struct sctp_association *asoc, uint32_t last_tsn, uint32_t * biggest_tsn_acked, uint32_t * biggest_newly_acked_tsn, uint32_t * this_sack_lowest_newack, int num_seg, int num_nr_seg, int *rto_ok) { struct sctp_gap_ack_block *frag, block; struct sctp_tmit_chunk *tp1; int i; int num_frs = 0; int chunk_freed; int non_revocable; uint16_t frag_strt, frag_end, prev_frag_end; tp1 = TAILQ_FIRST(&asoc->sent_queue); prev_frag_end = 0; chunk_freed = 0; for (i = 0; i < (num_seg + num_nr_seg); i++) { if (i == num_seg) { prev_frag_end = 0; tp1 = TAILQ_FIRST(&asoc->sent_queue); } frag = (struct sctp_gap_ack_block *)sctp_m_getptr(m, *offset, sizeof(struct sctp_gap_ack_block), (uint8_t *) & block); *offset += sizeof(block); if (frag == NULL) { return (chunk_freed); } frag_strt = ntohs(frag->start); frag_end = ntohs(frag->end); if (frag_strt > frag_end) { /* This gap report is malformed, skip it. */ continue; } if (frag_strt <= prev_frag_end) { /* This gap report is not in order, so restart. */ tp1 = TAILQ_FIRST(&asoc->sent_queue); } if (SCTP_TSN_GT((last_tsn + frag_end), *biggest_tsn_acked)) { *biggest_tsn_acked = last_tsn + frag_end; } if (i < num_seg) { non_revocable = 0; } else { non_revocable = 1; } if (sctp_process_segment_range(stcb, &tp1, last_tsn, frag_strt, frag_end, non_revocable, &num_frs, biggest_newly_acked_tsn, this_sack_lowest_newack, rto_ok)) { chunk_freed = 1; } prev_frag_end = frag_end; } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FR_LOGGING_ENABLE) { if (num_frs) sctp_log_fr(*biggest_tsn_acked, *biggest_newly_acked_tsn, last_tsn, SCTP_FR_LOG_BIGGEST_TSNS); } return (chunk_freed); } static void sctp_check_for_revoked(struct sctp_tcb *stcb, struct sctp_association *asoc, uint32_t cumack, uint32_t biggest_tsn_acked) { struct sctp_tmit_chunk *tp1; TAILQ_FOREACH(tp1, &asoc->sent_queue, sctp_next) { if (SCTP_TSN_GT(tp1->rec.data.TSN_seq, cumack)) { /* * ok this guy is either ACK or MARKED. If it is * ACKED it has been previously acked but not this * time i.e. revoked. If it is MARKED it was ACK'ed * again. */ if (SCTP_TSN_GT(tp1->rec.data.TSN_seq, biggest_tsn_acked)) { break; } if (tp1->sent == SCTP_DATAGRAM_ACKED) { /* it has been revoked */ tp1->sent = SCTP_DATAGRAM_SENT; tp1->rec.data.chunk_was_revoked = 1; /* * We must add this stuff back in to assure * timers and such get started. */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FLIGHT_LOGGING_ENABLE) { sctp_misc_ints(SCTP_FLIGHT_LOG_UP_REVOKE, tp1->whoTo->flight_size, tp1->book_size, (uint32_t) (uintptr_t) tp1->whoTo, tp1->rec.data.TSN_seq); } sctp_flight_size_increase(tp1); sctp_total_flight_increase(stcb, tp1); /* * We inflate the cwnd to compensate for our * artificial inflation of the flight_size. */ tp1->whoTo->cwnd += tp1->book_size; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SACK_LOGGING_ENABLE) { sctp_log_sack(asoc->last_acked_seq, cumack, tp1->rec.data.TSN_seq, 0, 0, SCTP_LOG_TSN_REVOKED); } } else if (tp1->sent == SCTP_DATAGRAM_MARKED) { /* it has been re-acked in this SACK */ tp1->sent = SCTP_DATAGRAM_ACKED; } } if (tp1->sent == SCTP_DATAGRAM_UNSENT) break; } } static void sctp_strike_gap_ack_chunks(struct sctp_tcb *stcb, struct sctp_association *asoc, uint32_t biggest_tsn_acked, uint32_t biggest_tsn_newly_acked, uint32_t this_sack_lowest_newack, int accum_moved) { struct sctp_tmit_chunk *tp1; int strike_flag = 0; struct timeval now; int tot_retrans = 0; uint32_t sending_seq; struct sctp_nets *net; int num_dests_sacked = 0; /* * select the sending_seq, this is either the next thing ready to be * sent but not transmitted, OR, the next seq we assign. */ tp1 = TAILQ_FIRST(&stcb->asoc.send_queue); if (tp1 == NULL) { sending_seq = asoc->sending_seq; } else { sending_seq = tp1->rec.data.TSN_seq; } /* CMT DAC algo: finding out if SACK is a mixed SACK */ if ((asoc->sctp_cmt_on_off > 0) && SCTP_BASE_SYSCTL(sctp_cmt_use_dac)) { TAILQ_FOREACH(net, &asoc->nets, sctp_next) { if (net->saw_newack) num_dests_sacked++; } } if (stcb->asoc.prsctp_supported) { (void)SCTP_GETTIME_TIMEVAL(&now); } TAILQ_FOREACH(tp1, &asoc->sent_queue, sctp_next) { strike_flag = 0; if (tp1->no_fr_allowed) { /* this one had a timeout or something */ continue; } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FR_LOGGING_ENABLE) { if (tp1->sent < SCTP_DATAGRAM_RESEND) sctp_log_fr(biggest_tsn_newly_acked, tp1->rec.data.TSN_seq, tp1->sent, SCTP_FR_LOG_CHECK_STRIKE); } if (SCTP_TSN_GT(tp1->rec.data.TSN_seq, biggest_tsn_acked) || tp1->sent == SCTP_DATAGRAM_UNSENT) { /* done */ break; } if (stcb->asoc.prsctp_supported) { if ((PR_SCTP_TTL_ENABLED(tp1->flags)) && tp1->sent < SCTP_DATAGRAM_ACKED) { /* Is it expired? */ if (timevalcmp(&now, &tp1->rec.data.timetodrop, >)) { /* Yes so drop it */ if (tp1->data != NULL) { (void)sctp_release_pr_sctp_chunk(stcb, tp1, 1, SCTP_SO_NOT_LOCKED); } continue; } } } if (SCTP_TSN_GT(tp1->rec.data.TSN_seq, asoc->this_sack_highest_gap)) { /* we are beyond the tsn in the sack */ break; } if (tp1->sent >= SCTP_DATAGRAM_RESEND) { /* either a RESEND, ACKED, or MARKED */ /* skip */ if (tp1->sent == SCTP_FORWARD_TSN_SKIP) { /* Continue strikin FWD-TSN chunks */ tp1->rec.data.fwd_tsn_cnt++; } continue; } /* * CMT : SFR algo (covers part of DAC and HTNA as well) */ if (tp1->whoTo && tp1->whoTo->saw_newack == 0) { /* * No new acks were receieved for data sent to this * dest. Therefore, according to the SFR algo for * CMT, no data sent to this dest can be marked for * FR using this SACK. */ continue; } else if (tp1->whoTo && SCTP_TSN_GT(tp1->rec.data.TSN_seq, tp1->whoTo->this_sack_highest_newack)) { /* * CMT: New acks were receieved for data sent to * this dest. But no new acks were seen for data * sent after tp1. Therefore, according to the SFR * algo for CMT, tp1 cannot be marked for FR using * this SACK. This step covers part of the DAC algo * and the HTNA algo as well. */ continue; } /* * Here we check to see if we were have already done a FR * and if so we see if the biggest TSN we saw in the sack is * smaller than the recovery point. If so we don't strike * the tsn... otherwise we CAN strike the TSN. */ /* * @@@ JRI: Check for CMT if (accum_moved && * asoc->fast_retran_loss_recovery && (sctp_cmt_on_off == * 0)) { */ if (accum_moved && asoc->fast_retran_loss_recovery) { /* * Strike the TSN if in fast-recovery and cum-ack * moved. */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FR_LOGGING_ENABLE) { sctp_log_fr(biggest_tsn_newly_acked, tp1->rec.data.TSN_seq, tp1->sent, SCTP_FR_LOG_STRIKE_CHUNK); } if (tp1->sent < SCTP_DATAGRAM_RESEND) { tp1->sent++; } if ((asoc->sctp_cmt_on_off > 0) && SCTP_BASE_SYSCTL(sctp_cmt_use_dac)) { /* * CMT DAC algorithm: If SACK flag is set to * 0, then lowest_newack test will not pass * because it would have been set to the * cumack earlier. If not already to be * rtx'd, If not a mixed sack and if tp1 is * not between two sacked TSNs, then mark by * one more. NOTE that we are marking by one * additional time since the SACK DAC flag * indicates that two packets have been * received after this missing TSN. */ if ((tp1->sent < SCTP_DATAGRAM_RESEND) && (num_dests_sacked == 1) && SCTP_TSN_GT(this_sack_lowest_newack, tp1->rec.data.TSN_seq)) { if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FR_LOGGING_ENABLE) { sctp_log_fr(16 + num_dests_sacked, tp1->rec.data.TSN_seq, tp1->sent, SCTP_FR_LOG_STRIKE_CHUNK); } tp1->sent++; } } } else if ((tp1->rec.data.doing_fast_retransmit) && (asoc->sctp_cmt_on_off == 0)) { /* * For those that have done a FR we must take * special consideration if we strike. I.e the * biggest_newly_acked must be higher than the * sending_seq at the time we did the FR. */ if ( #ifdef SCTP_FR_TO_ALTERNATE /* * If FR's go to new networks, then we must only do * this for singly homed asoc's. However if the FR's * go to the same network (Armando's work) then its * ok to FR multiple times. */ (asoc->numnets < 2) #else (1) #endif ) { if (SCTP_TSN_GE(biggest_tsn_newly_acked, tp1->rec.data.fast_retran_tsn)) { /* * Strike the TSN, since this ack is * beyond where things were when we * did a FR. */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FR_LOGGING_ENABLE) { sctp_log_fr(biggest_tsn_newly_acked, tp1->rec.data.TSN_seq, tp1->sent, SCTP_FR_LOG_STRIKE_CHUNK); } if (tp1->sent < SCTP_DATAGRAM_RESEND) { tp1->sent++; } strike_flag = 1; if ((asoc->sctp_cmt_on_off > 0) && SCTP_BASE_SYSCTL(sctp_cmt_use_dac)) { /* * CMT DAC algorithm: If * SACK flag is set to 0, * then lowest_newack test * will not pass because it * would have been set to * the cumack earlier. If * not already to be rtx'd, * If not a mixed sack and * if tp1 is not between two * sacked TSNs, then mark by * one more. NOTE that we * are marking by one * additional time since the * SACK DAC flag indicates * that two packets have * been received after this * missing TSN. */ if ((tp1->sent < SCTP_DATAGRAM_RESEND) && (num_dests_sacked == 1) && SCTP_TSN_GT(this_sack_lowest_newack, tp1->rec.data.TSN_seq)) { if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FR_LOGGING_ENABLE) { sctp_log_fr(32 + num_dests_sacked, tp1->rec.data.TSN_seq, tp1->sent, SCTP_FR_LOG_STRIKE_CHUNK); } if (tp1->sent < SCTP_DATAGRAM_RESEND) { tp1->sent++; } } } } } /* * JRI: TODO: remove code for HTNA algo. CMT's SFR * algo covers HTNA. */ } else if (SCTP_TSN_GT(tp1->rec.data.TSN_seq, biggest_tsn_newly_acked)) { /* * We don't strike these: This is the HTNA * algorithm i.e. we don't strike If our TSN is * larger than the Highest TSN Newly Acked. */ ; } else { /* Strike the TSN */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FR_LOGGING_ENABLE) { sctp_log_fr(biggest_tsn_newly_acked, tp1->rec.data.TSN_seq, tp1->sent, SCTP_FR_LOG_STRIKE_CHUNK); } if (tp1->sent < SCTP_DATAGRAM_RESEND) { tp1->sent++; } if ((asoc->sctp_cmt_on_off > 0) && SCTP_BASE_SYSCTL(sctp_cmt_use_dac)) { /* * CMT DAC algorithm: If SACK flag is set to * 0, then lowest_newack test will not pass * because it would have been set to the * cumack earlier. If not already to be * rtx'd, If not a mixed sack and if tp1 is * not between two sacked TSNs, then mark by * one more. NOTE that we are marking by one * additional time since the SACK DAC flag * indicates that two packets have been * received after this missing TSN. */ if ((tp1->sent < SCTP_DATAGRAM_RESEND) && (num_dests_sacked == 1) && SCTP_TSN_GT(this_sack_lowest_newack, tp1->rec.data.TSN_seq)) { if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FR_LOGGING_ENABLE) { sctp_log_fr(48 + num_dests_sacked, tp1->rec.data.TSN_seq, tp1->sent, SCTP_FR_LOG_STRIKE_CHUNK); } tp1->sent++; } } } if (tp1->sent == SCTP_DATAGRAM_RESEND) { struct sctp_nets *alt; /* fix counts and things */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FLIGHT_LOGGING_ENABLE) { sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_RSND, (tp1->whoTo ? (tp1->whoTo->flight_size) : 0), tp1->book_size, (uint32_t) (uintptr_t) tp1->whoTo, tp1->rec.data.TSN_seq); } if (tp1->whoTo) { tp1->whoTo->net_ack++; sctp_flight_size_decrease(tp1); if (stcb->asoc.cc_functions.sctp_cwnd_update_tsn_acknowledged) { (*stcb->asoc.cc_functions.sctp_cwnd_update_tsn_acknowledged) (tp1->whoTo, tp1); } } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOG_RWND_ENABLE) { sctp_log_rwnd(SCTP_INCREASE_PEER_RWND, asoc->peers_rwnd, tp1->send_size, SCTP_BASE_SYSCTL(sctp_peer_chunk_oh)); } /* add back to the rwnd */ asoc->peers_rwnd += (tp1->send_size + SCTP_BASE_SYSCTL(sctp_peer_chunk_oh)); /* remove from the total flight */ sctp_total_flight_decrease(stcb, tp1); if ((stcb->asoc.prsctp_supported) && (PR_SCTP_RTX_ENABLED(tp1->flags))) { /* * Has it been retransmitted tv_sec times? - * we store the retran count there. */ if (tp1->snd_count > tp1->rec.data.timetodrop.tv_sec) { /* Yes, so drop it */ if (tp1->data != NULL) { (void)sctp_release_pr_sctp_chunk(stcb, tp1, 1, SCTP_SO_NOT_LOCKED); } /* Make sure to flag we had a FR */ tp1->whoTo->net_ack++; continue; } } /* * SCTP_PRINTF("OK, we are now ready to FR this * guy\n"); */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FR_LOGGING_ENABLE) { sctp_log_fr(tp1->rec.data.TSN_seq, tp1->snd_count, 0, SCTP_FR_MARKED); } if (strike_flag) { /* This is a subsequent FR */ SCTP_STAT_INCR(sctps_sendmultfastretrans); } sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt); if (asoc->sctp_cmt_on_off > 0) { /* * CMT: Using RTX_SSTHRESH policy for CMT. * If CMT is being used, then pick dest with * largest ssthresh for any retransmission. */ tp1->no_fr_allowed = 1; alt = tp1->whoTo; /* sa_ignore NO_NULL_CHK */ if (asoc->sctp_cmt_pf > 0) { /* * JRS 5/18/07 - If CMT PF is on, * use the PF version of * find_alt_net() */ alt = sctp_find_alternate_net(stcb, alt, 2); } else { /* * JRS 5/18/07 - If only CMT is on, * use the CMT version of * find_alt_net() */ /* sa_ignore NO_NULL_CHK */ alt = sctp_find_alternate_net(stcb, alt, 1); } if (alt == NULL) { alt = tp1->whoTo; } /* * CUCv2: If a different dest is picked for * the retransmission, then new * (rtx-)pseudo_cumack needs to be tracked * for orig dest. Let CUCv2 track new (rtx-) * pseudo-cumack always. */ if (tp1->whoTo) { tp1->whoTo->find_pseudo_cumack = 1; tp1->whoTo->find_rtx_pseudo_cumack = 1; } } else {/* CMT is OFF */ #ifdef SCTP_FR_TO_ALTERNATE /* Can we find an alternate? */ alt = sctp_find_alternate_net(stcb, tp1->whoTo, 0); #else /* * default behavior is to NOT retransmit * FR's to an alternate. Armando Caro's * paper details why. */ alt = tp1->whoTo; #endif } tp1->rec.data.doing_fast_retransmit = 1; tot_retrans++; /* mark the sending seq for possible subsequent FR's */ /* * SCTP_PRINTF("Marking TSN for FR new value %x\n", * (uint32_t)tpi->rec.data.TSN_seq); */ if (TAILQ_EMPTY(&asoc->send_queue)) { /* * If the queue of send is empty then its * the next sequence number that will be * assigned so we subtract one from this to * get the one we last sent. */ tp1->rec.data.fast_retran_tsn = sending_seq; } else { /* * If there are chunks on the send queue * (unsent data that has made it from the * stream queues but not out the door, we * take the first one (which will have the * lowest TSN) and subtract one to get the * one we last sent. */ struct sctp_tmit_chunk *ttt; ttt = TAILQ_FIRST(&asoc->send_queue); tp1->rec.data.fast_retran_tsn = ttt->rec.data.TSN_seq; } if (tp1->do_rtt) { /* * this guy had a RTO calculation pending on * it, cancel it */ if ((tp1->whoTo != NULL) && (tp1->whoTo->rto_needed == 0)) { tp1->whoTo->rto_needed = 1; } tp1->do_rtt = 0; } if (alt != tp1->whoTo) { /* yes, there is an alternate. */ sctp_free_remote_addr(tp1->whoTo); /* sa_ignore FREED_MEMORY */ tp1->whoTo = alt; atomic_add_int(&alt->ref_count, 1); } } } } struct sctp_tmit_chunk * sctp_try_advance_peer_ack_point(struct sctp_tcb *stcb, struct sctp_association *asoc) { struct sctp_tmit_chunk *tp1, *tp2, *a_adv = NULL; struct timeval now; int now_filled = 0; if (asoc->prsctp_supported == 0) { return (NULL); } TAILQ_FOREACH_SAFE(tp1, &asoc->sent_queue, sctp_next, tp2) { if (tp1->sent != SCTP_FORWARD_TSN_SKIP && tp1->sent != SCTP_DATAGRAM_RESEND && tp1->sent != SCTP_DATAGRAM_NR_ACKED) { /* no chance to advance, out of here */ break; } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOG_TRY_ADVANCE) { if ((tp1->sent == SCTP_FORWARD_TSN_SKIP) || (tp1->sent == SCTP_DATAGRAM_NR_ACKED)) { sctp_misc_ints(SCTP_FWD_TSN_CHECK, asoc->advanced_peer_ack_point, tp1->rec.data.TSN_seq, 0, 0); } } if (!PR_SCTP_ENABLED(tp1->flags)) { /* * We can't fwd-tsn past any that are reliable aka * retransmitted until the asoc fails. */ break; } if (!now_filled) { (void)SCTP_GETTIME_TIMEVAL(&now); now_filled = 1; } /* * now we got a chunk which is marked for another * retransmission to a PR-stream but has run out its chances * already maybe OR has been marked to skip now. Can we skip * it if its a resend? */ if (tp1->sent == SCTP_DATAGRAM_RESEND && (PR_SCTP_TTL_ENABLED(tp1->flags))) { /* * Now is this one marked for resend and its time is * now up? */ if (timevalcmp(&now, &tp1->rec.data.timetodrop, >)) { /* Yes so drop it */ if (tp1->data) { (void)sctp_release_pr_sctp_chunk(stcb, tp1, 1, SCTP_SO_NOT_LOCKED); } } else { /* * No, we are done when hit one for resend * whos time as not expired. */ break; } } /* * Ok now if this chunk is marked to drop it we can clean up * the chunk, advance our peer ack point and we can check * the next chunk. */ if ((tp1->sent == SCTP_FORWARD_TSN_SKIP) || (tp1->sent == SCTP_DATAGRAM_NR_ACKED)) { /* advance PeerAckPoint goes forward */ if (SCTP_TSN_GT(tp1->rec.data.TSN_seq, asoc->advanced_peer_ack_point)) { asoc->advanced_peer_ack_point = tp1->rec.data.TSN_seq; a_adv = tp1; } else if (tp1->rec.data.TSN_seq == asoc->advanced_peer_ack_point) { /* No update but we do save the chk */ a_adv = tp1; } } else { /* * If it is still in RESEND we can advance no * further */ break; } } return (a_adv); } static int sctp_fs_audit(struct sctp_association *asoc) { struct sctp_tmit_chunk *chk; int inflight = 0, resend = 0, inbetween = 0, acked = 0, above = 0; int ret; #ifndef INVARIANTS int entry_flight, entry_cnt; #endif ret = 0; #ifndef INVARIANTS entry_flight = asoc->total_flight; entry_cnt = asoc->total_flight_count; #endif if (asoc->pr_sctp_cnt >= asoc->sent_queue_cnt) return (0); TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) { if (chk->sent < SCTP_DATAGRAM_RESEND) { SCTP_PRINTF("Chk TSN:%u size:%d inflight cnt:%d\n", chk->rec.data.TSN_seq, chk->send_size, chk->snd_count); inflight++; } else if (chk->sent == SCTP_DATAGRAM_RESEND) { resend++; } else if (chk->sent < SCTP_DATAGRAM_ACKED) { inbetween++; } else if (chk->sent > SCTP_DATAGRAM_ACKED) { above++; } else { acked++; } } if ((inflight > 0) || (inbetween > 0)) { #ifdef INVARIANTS panic("Flight size-express incorrect? \n"); #else SCTP_PRINTF("asoc->total_flight:%d cnt:%d\n", entry_flight, entry_cnt); SCTP_PRINTF("Flight size-express incorrect F:%d I:%d R:%d Ab:%d ACK:%d\n", inflight, inbetween, resend, above, acked); ret = 1; #endif } return (ret); } static void sctp_window_probe_recovery(struct sctp_tcb *stcb, struct sctp_association *asoc, struct sctp_tmit_chunk *tp1) { tp1->window_probe = 0; if ((tp1->sent >= SCTP_DATAGRAM_ACKED) || (tp1->data == NULL)) { /* TSN's skipped we do NOT move back. */ sctp_misc_ints(SCTP_FLIGHT_LOG_DWN_WP_FWD, tp1->whoTo ? tp1->whoTo->flight_size : 0, tp1->book_size, (uint32_t) (uintptr_t) tp1->whoTo, tp1->rec.data.TSN_seq); return; } /* First setup this by shrinking flight */ if (stcb->asoc.cc_functions.sctp_cwnd_update_tsn_acknowledged) { (*stcb->asoc.cc_functions.sctp_cwnd_update_tsn_acknowledged) (tp1->whoTo, tp1); } sctp_flight_size_decrease(tp1); sctp_total_flight_decrease(stcb, tp1); /* Now mark for resend */ tp1->sent = SCTP_DATAGRAM_RESEND; sctp_ucount_incr(asoc->sent_queue_retran_cnt); if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FLIGHT_LOGGING_ENABLE) { sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_WP, tp1->whoTo->flight_size, tp1->book_size, (uint32_t) (uintptr_t) tp1->whoTo, tp1->rec.data.TSN_seq); } } void sctp_express_handle_sack(struct sctp_tcb *stcb, uint32_t cumack, uint32_t rwnd, int *abort_now, int ecne_seen) { struct sctp_nets *net; struct sctp_association *asoc; struct sctp_tmit_chunk *tp1, *tp2; uint32_t old_rwnd; int win_probe_recovery = 0; int win_probe_recovered = 0; int j, done_once = 0; int rto_ok = 1; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOG_SACK_ARRIVALS_ENABLE) { sctp_misc_ints(SCTP_SACK_LOG_EXPRESS, cumack, rwnd, stcb->asoc.last_acked_seq, stcb->asoc.peers_rwnd); } SCTP_TCB_LOCK_ASSERT(stcb); #ifdef SCTP_ASOCLOG_OF_TSNS stcb->asoc.cumack_log[stcb->asoc.cumack_log_at] = cumack; stcb->asoc.cumack_log_at++; if (stcb->asoc.cumack_log_at > SCTP_TSN_LOG_SIZE) { stcb->asoc.cumack_log_at = 0; } #endif asoc = &stcb->asoc; old_rwnd = asoc->peers_rwnd; if (SCTP_TSN_GT(asoc->last_acked_seq, cumack)) { /* old ack */ return; } else if (asoc->last_acked_seq == cumack) { /* Window update sack */ asoc->peers_rwnd = sctp_sbspace_sub(rwnd, (uint32_t) (asoc->total_flight + (asoc->total_flight_count * SCTP_BASE_SYSCTL(sctp_peer_chunk_oh)))); if (asoc->peers_rwnd < stcb->sctp_ep->sctp_ep.sctp_sws_sender) { /* SWS sender side engages */ asoc->peers_rwnd = 0; } if (asoc->peers_rwnd > old_rwnd) { goto again; } return; } /* First setup for CC stuff */ TAILQ_FOREACH(net, &asoc->nets, sctp_next) { if (SCTP_TSN_GT(cumack, net->cwr_window_tsn)) { /* Drag along the window_tsn for cwr's */ net->cwr_window_tsn = cumack; } net->prev_cwnd = net->cwnd; net->net_ack = 0; net->net_ack2 = 0; /* * CMT: Reset CUC and Fast recovery algo variables before * SACK processing */ net->new_pseudo_cumack = 0; net->will_exit_fast_recovery = 0; if (stcb->asoc.cc_functions.sctp_cwnd_prepare_net_for_sack) { (*stcb->asoc.cc_functions.sctp_cwnd_prepare_net_for_sack) (stcb, net); } } if (SCTP_BASE_SYSCTL(sctp_strict_sacks)) { uint32_t send_s; if (!TAILQ_EMPTY(&asoc->sent_queue)) { tp1 = TAILQ_LAST(&asoc->sent_queue, sctpchunk_listhead); send_s = tp1->rec.data.TSN_seq + 1; } else { send_s = asoc->sending_seq; } if (SCTP_TSN_GE(cumack, send_s)) { struct mbuf *op_err; char msg[SCTP_DIAG_INFO_LEN]; *abort_now = 1; /* XXX */ snprintf(msg, sizeof(msg), "Cum ack %8.8x greater or equal than TSN %8.8x", cumack, send_s); op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_23; + stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_21; sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); return; } } asoc->this_sack_highest_gap = cumack; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_THRESHOLD_LOGGING) { sctp_misc_ints(SCTP_THRESHOLD_CLEAR, stcb->asoc.overall_error_count, 0, SCTP_FROM_SCTP_INDATA, __LINE__); } stcb->asoc.overall_error_count = 0; if (SCTP_TSN_GT(cumack, asoc->last_acked_seq)) { /* process the new consecutive TSN first */ TAILQ_FOREACH_SAFE(tp1, &asoc->sent_queue, sctp_next, tp2) { if (SCTP_TSN_GE(cumack, tp1->rec.data.TSN_seq)) { if (tp1->sent == SCTP_DATAGRAM_UNSENT) { SCTP_PRINTF("Warning, an unsent is now acked?\n"); } if (tp1->sent < SCTP_DATAGRAM_ACKED) { /* * If it is less than ACKED, it is * now no-longer in flight. Higher * values may occur during marking */ if (tp1->sent < SCTP_DATAGRAM_RESEND) { if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FLIGHT_LOGGING_ENABLE) { sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_CA, tp1->whoTo->flight_size, tp1->book_size, (uint32_t) (uintptr_t) tp1->whoTo, tp1->rec.data.TSN_seq); } sctp_flight_size_decrease(tp1); if (stcb->asoc.cc_functions.sctp_cwnd_update_tsn_acknowledged) { (*stcb->asoc.cc_functions.sctp_cwnd_update_tsn_acknowledged) (tp1->whoTo, tp1); } /* sa_ignore NO_NULL_CHK */ sctp_total_flight_decrease(stcb, tp1); } tp1->whoTo->net_ack += tp1->send_size; if (tp1->snd_count < 2) { /* * True non-retransmited * chunk */ tp1->whoTo->net_ack2 += tp1->send_size; /* update RTO too? */ if (tp1->do_rtt) { if (rto_ok) { tp1->whoTo->RTO = /* * sa_ignore * NO_NULL_CH * K */ sctp_calculate_rto(stcb, asoc, tp1->whoTo, &tp1->sent_rcv_time, sctp_align_safe_nocopy, SCTP_RTT_FROM_DATA); rto_ok = 0; } if (tp1->whoTo->rto_needed == 0) { tp1->whoTo->rto_needed = 1; } tp1->do_rtt = 0; } } /* * CMT: CUCv2 algorithm. From the * cumack'd TSNs, for each TSN being * acked for the first time, set the * following variables for the * corresp destination. * new_pseudo_cumack will trigger a * cwnd update. * find_(rtx_)pseudo_cumack will * trigger search for the next * expected (rtx-)pseudo-cumack. */ tp1->whoTo->new_pseudo_cumack = 1; tp1->whoTo->find_pseudo_cumack = 1; tp1->whoTo->find_rtx_pseudo_cumack = 1; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_CWND_LOGGING_ENABLE) { /* sa_ignore NO_NULL_CHK */ sctp_log_cwnd(stcb, tp1->whoTo, tp1->rec.data.TSN_seq, SCTP_CWND_LOG_FROM_SACK); } } if (tp1->sent == SCTP_DATAGRAM_RESEND) { sctp_ucount_decr(asoc->sent_queue_retran_cnt); } if (tp1->rec.data.chunk_was_revoked) { /* deflate the cwnd */ tp1->whoTo->cwnd -= tp1->book_size; tp1->rec.data.chunk_was_revoked = 0; } if (tp1->sent != SCTP_DATAGRAM_NR_ACKED) { if (asoc->strmout[tp1->rec.data.stream_number].chunks_on_queues > 0) { asoc->strmout[tp1->rec.data.stream_number].chunks_on_queues--; #ifdef INVARIANTS } else { panic("No chunks on the queues for sid %u.", tp1->rec.data.stream_number); #endif } } if ((asoc->strmout[tp1->rec.data.stream_number].chunks_on_queues == 0) && (asoc->strmout[tp1->rec.data.stream_number].state == SCTP_STREAM_RESET_PENDING) && TAILQ_EMPTY(&asoc->strmout[tp1->rec.data.stream_number].outqueue)) { asoc->trigger_reset = 1; } TAILQ_REMOVE(&asoc->sent_queue, tp1, sctp_next); if (tp1->data) { /* sa_ignore NO_NULL_CHK */ sctp_free_bufspace(stcb, asoc, tp1, 1); sctp_m_freem(tp1->data); tp1->data = NULL; } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SACK_LOGGING_ENABLE) { sctp_log_sack(asoc->last_acked_seq, cumack, tp1->rec.data.TSN_seq, 0, 0, SCTP_LOG_FREE_SENT); } asoc->sent_queue_cnt--; sctp_free_a_chunk(stcb, tp1, SCTP_SO_NOT_LOCKED); } else { break; } } } /* sa_ignore NO_NULL_CHK */ if (stcb->sctp_socket) { #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) struct socket *so; #endif SOCKBUF_LOCK(&stcb->sctp_socket->so_snd); if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_WAKE_LOGGING_ENABLE) { /* sa_ignore NO_NULL_CHK */ sctp_wakeup_log(stcb, 1, SCTP_WAKESND_FROM_SACK); } #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) so = SCTP_INP_SO(stcb->sctp_ep); atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) { /* assoc was freed while we were unlocked */ SCTP_SOCKET_UNLOCK(so, 1); return; } #endif sctp_sowwakeup_locked(stcb->sctp_ep, stcb->sctp_socket); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif } else { if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_WAKE_LOGGING_ENABLE) { sctp_wakeup_log(stcb, 1, SCTP_NOWAKE_FROM_SACK); } } /* JRS - Use the congestion control given in the CC module */ if ((asoc->last_acked_seq != cumack) && (ecne_seen == 0)) { TAILQ_FOREACH(net, &asoc->nets, sctp_next) { if (net->net_ack2 > 0) { /* * Karn's rule applies to clearing error * count, this is optional. */ net->error_count = 0; if (!(net->dest_state & SCTP_ADDR_REACHABLE)) { /* addr came good */ net->dest_state |= SCTP_ADDR_REACHABLE; sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_UP, stcb, 0, (void *)net, SCTP_SO_NOT_LOCKED); } if (net == stcb->asoc.primary_destination) { if (stcb->asoc.alternate) { /* * release the alternate, * primary is good */ sctp_free_remote_addr(stcb->asoc.alternate); stcb->asoc.alternate = NULL; } } if (net->dest_state & SCTP_ADDR_PF) { net->dest_state &= ~SCTP_ADDR_PF; sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep, stcb, net, - SCTP_FROM_SCTP_INDATA + SCTP_LOC_24); + SCTP_FROM_SCTP_INDATA + SCTP_LOC_22); sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep, stcb, net); asoc->cc_functions.sctp_cwnd_update_exit_pf(stcb, net); /* Done with this net */ net->net_ack = 0; } /* restore any doubled timers */ net->RTO = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv; if (net->RTO < stcb->asoc.minrto) { net->RTO = stcb->asoc.minrto; } if (net->RTO > stcb->asoc.maxrto) { net->RTO = stcb->asoc.maxrto; } } } asoc->cc_functions.sctp_cwnd_update_after_sack(stcb, asoc, 1, 0, 0); } asoc->last_acked_seq = cumack; if (TAILQ_EMPTY(&asoc->sent_queue)) { /* nothing left in-flight */ TAILQ_FOREACH(net, &asoc->nets, sctp_next) { net->flight_size = 0; net->partial_bytes_acked = 0; } asoc->total_flight = 0; asoc->total_flight_count = 0; } /* RWND update */ asoc->peers_rwnd = sctp_sbspace_sub(rwnd, (uint32_t) (asoc->total_flight + (asoc->total_flight_count * SCTP_BASE_SYSCTL(sctp_peer_chunk_oh)))); if (asoc->peers_rwnd < stcb->sctp_ep->sctp_ep.sctp_sws_sender) { /* SWS sender side engages */ asoc->peers_rwnd = 0; } if (asoc->peers_rwnd > old_rwnd) { win_probe_recovery = 1; } /* Now assure a timer where data is queued at */ again: j = 0; TAILQ_FOREACH(net, &asoc->nets, sctp_next) { int to_ticks; if (win_probe_recovery && (net->window_probe)) { win_probe_recovered = 1; /* * Find first chunk that was used with window probe * and clear the sent */ /* sa_ignore FREED_MEMORY */ TAILQ_FOREACH(tp1, &asoc->sent_queue, sctp_next) { if (tp1->window_probe) { /* move back to data send queue */ sctp_window_probe_recovery(stcb, asoc, tp1); break; } } } if (net->RTO == 0) { to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); } else { to_ticks = MSEC_TO_TICKS(net->RTO); } if (net->flight_size) { j++; (void)SCTP_OS_TIMER_START(&net->rxt_timer.timer, to_ticks, sctp_timeout_handler, &net->rxt_timer); if (net->window_probe) { net->window_probe = 0; } } else { if (net->window_probe) { /* * In window probes we must assure a timer * is still running there */ net->window_probe = 0; if (!SCTP_OS_TIMER_PENDING(&net->rxt_timer.timer)) { SCTP_OS_TIMER_START(&net->rxt_timer.timer, to_ticks, sctp_timeout_handler, &net->rxt_timer); } } else if (SCTP_OS_TIMER_PENDING(&net->rxt_timer.timer)) { sctp_timer_stop(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, net, - SCTP_FROM_SCTP_INDATA + SCTP_LOC_25); + SCTP_FROM_SCTP_INDATA + SCTP_LOC_23); } } } if ((j == 0) && (!TAILQ_EMPTY(&asoc->sent_queue)) && (asoc->sent_queue_retran_cnt == 0) && (win_probe_recovered == 0) && (done_once == 0)) { /* * huh, this should not happen unless all packets are * PR-SCTP and marked to skip of course. */ if (sctp_fs_audit(asoc)) { TAILQ_FOREACH(net, &asoc->nets, sctp_next) { net->flight_size = 0; } asoc->total_flight = 0; asoc->total_flight_count = 0; asoc->sent_queue_retran_cnt = 0; TAILQ_FOREACH(tp1, &asoc->sent_queue, sctp_next) { if (tp1->sent < SCTP_DATAGRAM_RESEND) { sctp_flight_size_increase(tp1); sctp_total_flight_increase(stcb, tp1); } else if (tp1->sent == SCTP_DATAGRAM_RESEND) { sctp_ucount_incr(asoc->sent_queue_retran_cnt); } } } done_once = 1; goto again; } /**********************************/ /* Now what about shutdown issues */ /**********************************/ if (TAILQ_EMPTY(&asoc->send_queue) && TAILQ_EMPTY(&asoc->sent_queue)) { /* nothing left on sendqueue.. consider done */ /* clean up */ if ((asoc->stream_queue_cnt == 1) && ((asoc->state & SCTP_STATE_SHUTDOWN_PENDING) || (asoc->state & SCTP_STATE_SHUTDOWN_RECEIVED)) && (asoc->locked_on_sending) ) { struct sctp_stream_queue_pending *sp; /* * I may be in a state where we got all across.. but * cannot write more due to a shutdown... we abort * since the user did not indicate EOR in this case. * The sp will be cleaned during free of the asoc. */ sp = TAILQ_LAST(&((asoc->locked_on_sending)->outqueue), sctp_streamhead); if ((sp) && (sp->length == 0)) { /* Let cleanup code purge it */ if (sp->msg_is_complete) { asoc->stream_queue_cnt--; } else { asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT; asoc->locked_on_sending = NULL; asoc->stream_queue_cnt--; } } } if ((asoc->state & SCTP_STATE_SHUTDOWN_PENDING) && (asoc->stream_queue_cnt == 0)) { if (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT) { /* Need to abort here */ struct mbuf *op_err; abort_out_now: *abort_now = 1; /* XXX */ op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, ""); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_26; + stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_24; sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); return; } else { struct sctp_nets *netp; if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) || (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { SCTP_STAT_DECR_GAUGE32(sctps_currestab); } SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT); SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING); sctp_stop_timers_for_shutdown(stcb); if (asoc->alternate) { netp = asoc->alternate; } else { netp = asoc->primary_destination; } sctp_send_shutdown(stcb, netp); sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, stcb->sctp_ep, stcb, netp); sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb, netp); } } else if ((SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED) && (asoc->stream_queue_cnt == 0)) { struct sctp_nets *netp; if (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT) { goto abort_out_now; } SCTP_STAT_DECR_GAUGE32(sctps_currestab); SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_ACK_SENT); SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING); sctp_stop_timers_for_shutdown(stcb); if (asoc->alternate) { netp = asoc->alternate; } else { netp = asoc->primary_destination; } sctp_send_shutdown_ack(stcb, netp); sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNACK, stcb->sctp_ep, stcb, netp); } } /*********************************************/ /* Here we perform PR-SCTP procedures */ /* (section 4.2) */ /*********************************************/ /* C1. update advancedPeerAckPoint */ if (SCTP_TSN_GT(cumack, asoc->advanced_peer_ack_point)) { asoc->advanced_peer_ack_point = cumack; } /* PR-Sctp issues need to be addressed too */ if ((asoc->prsctp_supported) && (asoc->pr_sctp_cnt > 0)) { struct sctp_tmit_chunk *lchk; uint32_t old_adv_peer_ack_point; old_adv_peer_ack_point = asoc->advanced_peer_ack_point; lchk = sctp_try_advance_peer_ack_point(stcb, asoc); /* C3. See if we need to send a Fwd-TSN */ if (SCTP_TSN_GT(asoc->advanced_peer_ack_point, cumack)) { /* * ISSUE with ECN, see FWD-TSN processing. */ if (SCTP_TSN_GT(asoc->advanced_peer_ack_point, old_adv_peer_ack_point)) { send_forward_tsn(stcb, asoc); } else if (lchk) { /* try to FR fwd-tsn's that get lost too */ if (lchk->rec.data.fwd_tsn_cnt >= 3) { send_forward_tsn(stcb, asoc); } } } if (lchk) { /* Assure a timer is up */ sctp_timer_start(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, lchk->whoTo); } } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SACK_RWND_LOGGING_ENABLE) { sctp_misc_ints(SCTP_SACK_RWND_UPDATE, rwnd, stcb->asoc.peers_rwnd, stcb->asoc.total_flight, stcb->asoc.total_output_queue_size); } } void sctp_handle_sack(struct mbuf *m, int offset_seg, int offset_dup, struct sctp_tcb *stcb, uint16_t num_seg, uint16_t num_nr_seg, uint16_t num_dup, int *abort_now, uint8_t flags, uint32_t cum_ack, uint32_t rwnd, int ecne_seen) { struct sctp_association *asoc; struct sctp_tmit_chunk *tp1, *tp2; uint32_t last_tsn, biggest_tsn_acked, biggest_tsn_newly_acked, this_sack_lowest_newack; uint16_t wake_him = 0; uint32_t send_s = 0; long j; int accum_moved = 0; int will_exit_fast_recovery = 0; uint32_t a_rwnd, old_rwnd; int win_probe_recovery = 0; int win_probe_recovered = 0; struct sctp_nets *net = NULL; int done_once; int rto_ok = 1; uint8_t reneged_all = 0; uint8_t cmt_dac_flag; /* * we take any chance we can to service our queues since we cannot * get awoken when the socket is read from :< */ /* * Now perform the actual SACK handling: 1) Verify that it is not an * old sack, if so discard. 2) If there is nothing left in the send * queue (cum-ack is equal to last acked) then you have a duplicate * too, update any rwnd change and verify no timers are running. * then return. 3) Process any new consequtive data i.e. cum-ack * moved process these first and note that it moved. 4) Process any * sack blocks. 5) Drop any acked from the queue. 6) Check for any * revoked blocks and mark. 7) Update the cwnd. 8) Nothing left, * sync up flightsizes and things, stop all timers and also check * for shutdown_pending state. If so then go ahead and send off the * shutdown. If in shutdown recv, send off the shutdown-ack and * start that timer, Ret. 9) Strike any non-acked things and do FR * procedure if needed being sure to set the FR flag. 10) Do pr-sctp * procedures. 11) Apply any FR penalties. 12) Assure we will SACK * if in shutdown_recv state. */ SCTP_TCB_LOCK_ASSERT(stcb); /* CMT DAC algo */ this_sack_lowest_newack = 0; SCTP_STAT_INCR(sctps_slowpath_sack); last_tsn = cum_ack; cmt_dac_flag = flags & SCTP_SACK_CMT_DAC; #ifdef SCTP_ASOCLOG_OF_TSNS stcb->asoc.cumack_log[stcb->asoc.cumack_log_at] = cum_ack; stcb->asoc.cumack_log_at++; if (stcb->asoc.cumack_log_at > SCTP_TSN_LOG_SIZE) { stcb->asoc.cumack_log_at = 0; } #endif a_rwnd = rwnd; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOG_SACK_ARRIVALS_ENABLE) { sctp_misc_ints(SCTP_SACK_LOG_NORMAL, cum_ack, rwnd, stcb->asoc.last_acked_seq, stcb->asoc.peers_rwnd); } old_rwnd = stcb->asoc.peers_rwnd; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_THRESHOLD_LOGGING) { sctp_misc_ints(SCTP_THRESHOLD_CLEAR, stcb->asoc.overall_error_count, 0, SCTP_FROM_SCTP_INDATA, __LINE__); } stcb->asoc.overall_error_count = 0; asoc = &stcb->asoc; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SACK_LOGGING_ENABLE) { sctp_log_sack(asoc->last_acked_seq, cum_ack, 0, num_seg, num_dup, SCTP_LOG_NEW_SACK); } if ((num_dup) && (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FR_LOGGING_ENABLE)) { uint16_t i; uint32_t *dupdata, dblock; for (i = 0; i < num_dup; i++) { dupdata = (uint32_t *) sctp_m_getptr(m, offset_dup + i * sizeof(uint32_t), sizeof(uint32_t), (uint8_t *) & dblock); if (dupdata == NULL) { break; } sctp_log_fr(*dupdata, 0, 0, SCTP_FR_DUPED); } } if (SCTP_BASE_SYSCTL(sctp_strict_sacks)) { /* reality check */ if (!TAILQ_EMPTY(&asoc->sent_queue)) { tp1 = TAILQ_LAST(&asoc->sent_queue, sctpchunk_listhead); send_s = tp1->rec.data.TSN_seq + 1; } else { tp1 = NULL; send_s = asoc->sending_seq; } if (SCTP_TSN_GE(cum_ack, send_s)) { struct mbuf *op_err; char msg[SCTP_DIAG_INFO_LEN]; /* * no way, we have not even sent this TSN out yet. * Peer is hopelessly messed up with us. */ SCTP_PRINTF("NEW cum_ack:%x send_s:%x is smaller or equal\n", cum_ack, send_s); if (tp1) { SCTP_PRINTF("Got send_s from tsn:%x + 1 of tp1:%p\n", tp1->rec.data.TSN_seq, (void *)tp1); } hopeless_peer: *abort_now = 1; /* XXX */ snprintf(msg, sizeof(msg), "Cum ack %8.8x greater or equal than TSN %8.8x", cum_ack, send_s); op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_27; + stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_25; sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); return; } } /**********************/ /* 1) check the range */ /**********************/ if (SCTP_TSN_GT(asoc->last_acked_seq, last_tsn)) { /* acking something behind */ return; } /* update the Rwnd of the peer */ if (TAILQ_EMPTY(&asoc->sent_queue) && TAILQ_EMPTY(&asoc->send_queue) && (asoc->stream_queue_cnt == 0)) { /* nothing left on send/sent and strmq */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOG_RWND_ENABLE) { sctp_log_rwnd_set(SCTP_SET_PEER_RWND_VIA_SACK, asoc->peers_rwnd, 0, 0, a_rwnd); } asoc->peers_rwnd = a_rwnd; if (asoc->sent_queue_retran_cnt) { asoc->sent_queue_retran_cnt = 0; } if (asoc->peers_rwnd < stcb->sctp_ep->sctp_ep.sctp_sws_sender) { /* SWS sender side engages */ asoc->peers_rwnd = 0; } /* stop any timers */ TAILQ_FOREACH(net, &asoc->nets, sctp_next) { sctp_timer_stop(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, - stcb, net, SCTP_FROM_SCTP_INDATA + SCTP_LOC_28); + stcb, net, SCTP_FROM_SCTP_INDATA + SCTP_LOC_26); net->partial_bytes_acked = 0; net->flight_size = 0; } asoc->total_flight = 0; asoc->total_flight_count = 0; return; } /* * We init netAckSz and netAckSz2 to 0. These are used to track 2 * things. The total byte count acked is tracked in netAckSz AND * netAck2 is used to track the total bytes acked that are un- * amibguious and were never retransmitted. We track these on a per * destination address basis. */ TAILQ_FOREACH(net, &asoc->nets, sctp_next) { if (SCTP_TSN_GT(cum_ack, net->cwr_window_tsn)) { /* Drag along the window_tsn for cwr's */ net->cwr_window_tsn = cum_ack; } net->prev_cwnd = net->cwnd; net->net_ack = 0; net->net_ack2 = 0; /* * CMT: Reset CUC and Fast recovery algo variables before * SACK processing */ net->new_pseudo_cumack = 0; net->will_exit_fast_recovery = 0; if (stcb->asoc.cc_functions.sctp_cwnd_prepare_net_for_sack) { (*stcb->asoc.cc_functions.sctp_cwnd_prepare_net_for_sack) (stcb, net); } } /* process the new consecutive TSN first */ TAILQ_FOREACH(tp1, &asoc->sent_queue, sctp_next) { if (SCTP_TSN_GE(last_tsn, tp1->rec.data.TSN_seq)) { if (tp1->sent != SCTP_DATAGRAM_UNSENT) { accum_moved = 1; if (tp1->sent < SCTP_DATAGRAM_ACKED) { /* * If it is less than ACKED, it is * now no-longer in flight. Higher * values may occur during marking */ if ((tp1->whoTo->dest_state & SCTP_ADDR_UNCONFIRMED) && (tp1->snd_count < 2)) { /* * If there was no retran * and the address is * un-confirmed and we sent * there and are now * sacked.. its confirmed, * mark it so. */ tp1->whoTo->dest_state &= ~SCTP_ADDR_UNCONFIRMED; } if (tp1->sent < SCTP_DATAGRAM_RESEND) { if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FLIGHT_LOGGING_ENABLE) { sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_CA, tp1->whoTo->flight_size, tp1->book_size, (uint32_t) (uintptr_t) tp1->whoTo, tp1->rec.data.TSN_seq); } sctp_flight_size_decrease(tp1); sctp_total_flight_decrease(stcb, tp1); if (stcb->asoc.cc_functions.sctp_cwnd_update_tsn_acknowledged) { (*stcb->asoc.cc_functions.sctp_cwnd_update_tsn_acknowledged) (tp1->whoTo, tp1); } } tp1->whoTo->net_ack += tp1->send_size; /* CMT SFR and DAC algos */ this_sack_lowest_newack = tp1->rec.data.TSN_seq; tp1->whoTo->saw_newack = 1; if (tp1->snd_count < 2) { /* * True non-retransmited * chunk */ tp1->whoTo->net_ack2 += tp1->send_size; /* update RTO too? */ if (tp1->do_rtt) { if (rto_ok) { tp1->whoTo->RTO = sctp_calculate_rto(stcb, asoc, tp1->whoTo, &tp1->sent_rcv_time, sctp_align_safe_nocopy, SCTP_RTT_FROM_DATA); rto_ok = 0; } if (tp1->whoTo->rto_needed == 0) { tp1->whoTo->rto_needed = 1; } tp1->do_rtt = 0; } } /* * CMT: CUCv2 algorithm. From the * cumack'd TSNs, for each TSN being * acked for the first time, set the * following variables for the * corresp destination. * new_pseudo_cumack will trigger a * cwnd update. * find_(rtx_)pseudo_cumack will * trigger search for the next * expected (rtx-)pseudo-cumack. */ tp1->whoTo->new_pseudo_cumack = 1; tp1->whoTo->find_pseudo_cumack = 1; tp1->whoTo->find_rtx_pseudo_cumack = 1; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SACK_LOGGING_ENABLE) { sctp_log_sack(asoc->last_acked_seq, cum_ack, tp1->rec.data.TSN_seq, 0, 0, SCTP_LOG_TSN_ACKED); } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_CWND_LOGGING_ENABLE) { sctp_log_cwnd(stcb, tp1->whoTo, tp1->rec.data.TSN_seq, SCTP_CWND_LOG_FROM_SACK); } } if (tp1->sent == SCTP_DATAGRAM_RESEND) { sctp_ucount_decr(asoc->sent_queue_retran_cnt); #ifdef SCTP_AUDITING_ENABLED sctp_audit_log(0xB3, (asoc->sent_queue_retran_cnt & 0x000000ff)); #endif } if (tp1->rec.data.chunk_was_revoked) { /* deflate the cwnd */ tp1->whoTo->cwnd -= tp1->book_size; tp1->rec.data.chunk_was_revoked = 0; } if (tp1->sent != SCTP_DATAGRAM_NR_ACKED) { tp1->sent = SCTP_DATAGRAM_ACKED; } } } else { break; } } biggest_tsn_newly_acked = biggest_tsn_acked = last_tsn; /* always set this up to cum-ack */ asoc->this_sack_highest_gap = last_tsn; if ((num_seg > 0) || (num_nr_seg > 0)) { /* * CMT: SFR algo (and HTNA) - this_sack_highest_newack has * to be greater than the cumack. Also reset saw_newack to 0 * for all dests. */ TAILQ_FOREACH(net, &asoc->nets, sctp_next) { net->saw_newack = 0; net->this_sack_highest_newack = last_tsn; } /* * thisSackHighestGap will increase while handling NEW * segments this_sack_highest_newack will increase while * handling NEWLY ACKED chunks. this_sack_lowest_newack is * used for CMT DAC algo. saw_newack will also change. */ if (sctp_handle_segments(m, &offset_seg, stcb, asoc, last_tsn, &biggest_tsn_acked, &biggest_tsn_newly_acked, &this_sack_lowest_newack, num_seg, num_nr_seg, &rto_ok)) { wake_him++; } if (SCTP_BASE_SYSCTL(sctp_strict_sacks)) { /* * validate the biggest_tsn_acked in the gap acks if * strict adherence is wanted. */ if (SCTP_TSN_GE(biggest_tsn_acked, send_s)) { /* * peer is either confused or we are under * attack. We must abort. */ SCTP_PRINTF("Hopeless peer! biggest_tsn_acked:%x largest seq:%x\n", biggest_tsn_acked, send_s); goto hopeless_peer; } } } /*******************************************/ /* cancel ALL T3-send timer if accum moved */ /*******************************************/ if (asoc->sctp_cmt_on_off > 0) { TAILQ_FOREACH(net, &asoc->nets, sctp_next) { if (net->new_pseudo_cumack) sctp_timer_stop(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, net, - SCTP_FROM_SCTP_INDATA + SCTP_LOC_29); + SCTP_FROM_SCTP_INDATA + SCTP_LOC_27); } } else { if (accum_moved) { TAILQ_FOREACH(net, &asoc->nets, sctp_next) { sctp_timer_stop(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, - stcb, net, SCTP_FROM_SCTP_INDATA + SCTP_LOC_30); + stcb, net, SCTP_FROM_SCTP_INDATA + SCTP_LOC_28); } } } /********************************************/ /* drop the acked chunks from the sentqueue */ /********************************************/ asoc->last_acked_seq = cum_ack; TAILQ_FOREACH_SAFE(tp1, &asoc->sent_queue, sctp_next, tp2) { if (SCTP_TSN_GT(tp1->rec.data.TSN_seq, cum_ack)) { break; } if (tp1->sent != SCTP_DATAGRAM_NR_ACKED) { if (asoc->strmout[tp1->rec.data.stream_number].chunks_on_queues > 0) { asoc->strmout[tp1->rec.data.stream_number].chunks_on_queues--; #ifdef INVARIANTS } else { panic("No chunks on the queues for sid %u.", tp1->rec.data.stream_number); #endif } } if ((asoc->strmout[tp1->rec.data.stream_number].chunks_on_queues == 0) && (asoc->strmout[tp1->rec.data.stream_number].state == SCTP_STREAM_RESET_PENDING) && TAILQ_EMPTY(&asoc->strmout[tp1->rec.data.stream_number].outqueue)) { asoc->trigger_reset = 1; } TAILQ_REMOVE(&asoc->sent_queue, tp1, sctp_next); if (PR_SCTP_ENABLED(tp1->flags)) { if (asoc->pr_sctp_cnt != 0) asoc->pr_sctp_cnt--; } asoc->sent_queue_cnt--; if (tp1->data) { /* sa_ignore NO_NULL_CHK */ sctp_free_bufspace(stcb, asoc, tp1, 1); sctp_m_freem(tp1->data); tp1->data = NULL; if (asoc->prsctp_supported && PR_SCTP_BUF_ENABLED(tp1->flags)) { asoc->sent_queue_cnt_removeable--; } } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SACK_LOGGING_ENABLE) { sctp_log_sack(asoc->last_acked_seq, cum_ack, tp1->rec.data.TSN_seq, 0, 0, SCTP_LOG_FREE_SENT); } sctp_free_a_chunk(stcb, tp1, SCTP_SO_NOT_LOCKED); wake_him++; } if (TAILQ_EMPTY(&asoc->sent_queue) && (asoc->total_flight > 0)) { #ifdef INVARIANTS panic("Warning flight size is postive and should be 0"); #else SCTP_PRINTF("Warning flight size incorrect should be 0 is %d\n", asoc->total_flight); #endif asoc->total_flight = 0; } /* sa_ignore NO_NULL_CHK */ if ((wake_him) && (stcb->sctp_socket)) { #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) struct socket *so; #endif SOCKBUF_LOCK(&stcb->sctp_socket->so_snd); if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_WAKE_LOGGING_ENABLE) { sctp_wakeup_log(stcb, wake_him, SCTP_WAKESND_FROM_SACK); } #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) so = SCTP_INP_SO(stcb->sctp_ep); atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) { /* assoc was freed while we were unlocked */ SCTP_SOCKET_UNLOCK(so, 1); return; } #endif sctp_sowwakeup_locked(stcb->sctp_ep, stcb->sctp_socket); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif } else { if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_WAKE_LOGGING_ENABLE) { sctp_wakeup_log(stcb, wake_him, SCTP_NOWAKE_FROM_SACK); } } if (asoc->fast_retran_loss_recovery && accum_moved) { if (SCTP_TSN_GE(asoc->last_acked_seq, asoc->fast_recovery_tsn)) { /* Setup so we will exit RFC2582 fast recovery */ will_exit_fast_recovery = 1; } } /* * Check for revoked fragments: * * if Previous sack - Had no frags then we can't have any revoked if * Previous sack - Had frag's then - If we now have frags aka * num_seg > 0 call sctp_check_for_revoked() to tell if peer revoked * some of them. else - The peer revoked all ACKED fragments, since * we had some before and now we have NONE. */ if (num_seg) { sctp_check_for_revoked(stcb, asoc, cum_ack, biggest_tsn_acked); asoc->saw_sack_with_frags = 1; } else if (asoc->saw_sack_with_frags) { int cnt_revoked = 0; /* Peer revoked all dg's marked or acked */ TAILQ_FOREACH(tp1, &asoc->sent_queue, sctp_next) { if (tp1->sent == SCTP_DATAGRAM_ACKED) { tp1->sent = SCTP_DATAGRAM_SENT; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FLIGHT_LOGGING_ENABLE) { sctp_misc_ints(SCTP_FLIGHT_LOG_UP_REVOKE, tp1->whoTo->flight_size, tp1->book_size, (uint32_t) (uintptr_t) tp1->whoTo, tp1->rec.data.TSN_seq); } sctp_flight_size_increase(tp1); sctp_total_flight_increase(stcb, tp1); tp1->rec.data.chunk_was_revoked = 1; /* * To ensure that this increase in * flightsize, which is artificial, does not * throttle the sender, we also increase the * cwnd artificially. */ tp1->whoTo->cwnd += tp1->book_size; cnt_revoked++; } } if (cnt_revoked) { reneged_all = 1; } asoc->saw_sack_with_frags = 0; } if (num_nr_seg > 0) asoc->saw_sack_with_nr_frags = 1; else asoc->saw_sack_with_nr_frags = 0; /* JRS - Use the congestion control given in the CC module */ if (ecne_seen == 0) { TAILQ_FOREACH(net, &asoc->nets, sctp_next) { if (net->net_ack2 > 0) { /* * Karn's rule applies to clearing error * count, this is optional. */ net->error_count = 0; if (!(net->dest_state & SCTP_ADDR_REACHABLE)) { /* addr came good */ net->dest_state |= SCTP_ADDR_REACHABLE; sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_UP, stcb, 0, (void *)net, SCTP_SO_NOT_LOCKED); } if (net == stcb->asoc.primary_destination) { if (stcb->asoc.alternate) { /* * release the alternate, * primary is good */ sctp_free_remote_addr(stcb->asoc.alternate); stcb->asoc.alternate = NULL; } } if (net->dest_state & SCTP_ADDR_PF) { net->dest_state &= ~SCTP_ADDR_PF; sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep, stcb, net, - SCTP_FROM_SCTP_INDATA + SCTP_LOC_31); + SCTP_FROM_SCTP_INDATA + SCTP_LOC_29); sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep, stcb, net); asoc->cc_functions.sctp_cwnd_update_exit_pf(stcb, net); /* Done with this net */ net->net_ack = 0; } /* restore any doubled timers */ net->RTO = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv; if (net->RTO < stcb->asoc.minrto) { net->RTO = stcb->asoc.minrto; } if (net->RTO > stcb->asoc.maxrto) { net->RTO = stcb->asoc.maxrto; } } } asoc->cc_functions.sctp_cwnd_update_after_sack(stcb, asoc, accum_moved, reneged_all, will_exit_fast_recovery); } if (TAILQ_EMPTY(&asoc->sent_queue)) { /* nothing left in-flight */ TAILQ_FOREACH(net, &asoc->nets, sctp_next) { /* stop all timers */ sctp_timer_stop(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, net, - SCTP_FROM_SCTP_INDATA + SCTP_LOC_32); + SCTP_FROM_SCTP_INDATA + SCTP_LOC_30); net->flight_size = 0; net->partial_bytes_acked = 0; } asoc->total_flight = 0; asoc->total_flight_count = 0; } /**********************************/ /* Now what about shutdown issues */ /**********************************/ if (TAILQ_EMPTY(&asoc->send_queue) && TAILQ_EMPTY(&asoc->sent_queue)) { /* nothing left on sendqueue.. consider done */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOG_RWND_ENABLE) { sctp_log_rwnd_set(SCTP_SET_PEER_RWND_VIA_SACK, asoc->peers_rwnd, 0, 0, a_rwnd); } asoc->peers_rwnd = a_rwnd; if (asoc->peers_rwnd < stcb->sctp_ep->sctp_ep.sctp_sws_sender) { /* SWS sender side engages */ asoc->peers_rwnd = 0; } /* clean up */ if ((asoc->stream_queue_cnt == 1) && ((asoc->state & SCTP_STATE_SHUTDOWN_PENDING) || (asoc->state & SCTP_STATE_SHUTDOWN_RECEIVED)) && (asoc->locked_on_sending) ) { struct sctp_stream_queue_pending *sp; /* * I may be in a state where we got all across.. but * cannot write more due to a shutdown... we abort * since the user did not indicate EOR in this case. */ sp = TAILQ_LAST(&((asoc->locked_on_sending)->outqueue), sctp_streamhead); if ((sp) && (sp->length == 0)) { asoc->locked_on_sending = NULL; if (sp->msg_is_complete) { asoc->stream_queue_cnt--; } else { asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT; asoc->stream_queue_cnt--; } } } if ((asoc->state & SCTP_STATE_SHUTDOWN_PENDING) && (asoc->stream_queue_cnt == 0)) { if (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT) { /* Need to abort here */ struct mbuf *op_err; abort_out_now: *abort_now = 1; /* XXX */ op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, ""); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_33; + stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_31; sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); return; } else { struct sctp_nets *netp; if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) || (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { SCTP_STAT_DECR_GAUGE32(sctps_currestab); } SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT); SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING); sctp_stop_timers_for_shutdown(stcb); if (asoc->alternate) { netp = asoc->alternate; } else { netp = asoc->primary_destination; } sctp_send_shutdown(stcb, netp); sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, stcb->sctp_ep, stcb, netp); sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb, netp); } return; } else if ((SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED) && (asoc->stream_queue_cnt == 0)) { struct sctp_nets *netp; if (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT) { goto abort_out_now; } SCTP_STAT_DECR_GAUGE32(sctps_currestab); SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_ACK_SENT); SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING); sctp_stop_timers_for_shutdown(stcb); if (asoc->alternate) { netp = asoc->alternate; } else { netp = asoc->primary_destination; } sctp_send_shutdown_ack(stcb, netp); sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNACK, stcb->sctp_ep, stcb, netp); return; } } /* * Now here we are going to recycle net_ack for a different use... * HEADS UP. */ TAILQ_FOREACH(net, &asoc->nets, sctp_next) { net->net_ack = 0; } /* * CMT DAC algorithm: If SACK DAC flag was 0, then no extra marking * to be done. Setting this_sack_lowest_newack to the cum_ack will * automatically ensure that. */ if ((asoc->sctp_cmt_on_off > 0) && SCTP_BASE_SYSCTL(sctp_cmt_use_dac) && (cmt_dac_flag == 0)) { this_sack_lowest_newack = cum_ack; } if ((num_seg > 0) || (num_nr_seg > 0)) { sctp_strike_gap_ack_chunks(stcb, asoc, biggest_tsn_acked, biggest_tsn_newly_acked, this_sack_lowest_newack, accum_moved); } /* JRS - Use the congestion control given in the CC module */ asoc->cc_functions.sctp_cwnd_update_after_fr(stcb, asoc); /* Now are we exiting loss recovery ? */ if (will_exit_fast_recovery) { /* Ok, we must exit fast recovery */ asoc->fast_retran_loss_recovery = 0; } if ((asoc->sat_t3_loss_recovery) && SCTP_TSN_GE(asoc->last_acked_seq, asoc->sat_t3_recovery_tsn)) { /* end satellite t3 loss recovery */ asoc->sat_t3_loss_recovery = 0; } /* * CMT Fast recovery */ TAILQ_FOREACH(net, &asoc->nets, sctp_next) { if (net->will_exit_fast_recovery) { /* Ok, we must exit fast recovery */ net->fast_retran_loss_recovery = 0; } } /* Adjust and set the new rwnd value */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOG_RWND_ENABLE) { sctp_log_rwnd_set(SCTP_SET_PEER_RWND_VIA_SACK, asoc->peers_rwnd, asoc->total_flight, (asoc->total_flight_count * SCTP_BASE_SYSCTL(sctp_peer_chunk_oh)), a_rwnd); } asoc->peers_rwnd = sctp_sbspace_sub(a_rwnd, (uint32_t) (asoc->total_flight + (asoc->total_flight_count * SCTP_BASE_SYSCTL(sctp_peer_chunk_oh)))); if (asoc->peers_rwnd < stcb->sctp_ep->sctp_ep.sctp_sws_sender) { /* SWS sender side engages */ asoc->peers_rwnd = 0; } if (asoc->peers_rwnd > old_rwnd) { win_probe_recovery = 1; } /* * Now we must setup so we have a timer up for anyone with * outstanding data. */ done_once = 0; again: j = 0; TAILQ_FOREACH(net, &asoc->nets, sctp_next) { if (win_probe_recovery && (net->window_probe)) { win_probe_recovered = 1; /*- * Find first chunk that was used with * window probe and clear the event. Put * it back into the send queue as if has * not been sent. */ TAILQ_FOREACH(tp1, &asoc->sent_queue, sctp_next) { if (tp1->window_probe) { sctp_window_probe_recovery(stcb, asoc, tp1); break; } } } if (net->flight_size) { j++; if (!SCTP_OS_TIMER_PENDING(&net->rxt_timer.timer)) { sctp_timer_start(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, net); } if (net->window_probe) { net->window_probe = 0; } } else { if (net->window_probe) { /* * In window probes we must assure a timer * is still running there */ if (!SCTP_OS_TIMER_PENDING(&net->rxt_timer.timer)) { sctp_timer_start(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, net); } } else if (SCTP_OS_TIMER_PENDING(&net->rxt_timer.timer)) { sctp_timer_stop(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, net, - SCTP_FROM_SCTP_INDATA + SCTP_LOC_34); + SCTP_FROM_SCTP_INDATA + SCTP_LOC_32); } } } if ((j == 0) && (!TAILQ_EMPTY(&asoc->sent_queue)) && (asoc->sent_queue_retran_cnt == 0) && (win_probe_recovered == 0) && (done_once == 0)) { /* * huh, this should not happen unless all packets are * PR-SCTP and marked to skip of course. */ if (sctp_fs_audit(asoc)) { TAILQ_FOREACH(net, &asoc->nets, sctp_next) { net->flight_size = 0; } asoc->total_flight = 0; asoc->total_flight_count = 0; asoc->sent_queue_retran_cnt = 0; TAILQ_FOREACH(tp1, &asoc->sent_queue, sctp_next) { if (tp1->sent < SCTP_DATAGRAM_RESEND) { sctp_flight_size_increase(tp1); sctp_total_flight_increase(stcb, tp1); } else if (tp1->sent == SCTP_DATAGRAM_RESEND) { sctp_ucount_incr(asoc->sent_queue_retran_cnt); } } } done_once = 1; goto again; } /*********************************************/ /* Here we perform PR-SCTP procedures */ /* (section 4.2) */ /*********************************************/ /* C1. update advancedPeerAckPoint */ if (SCTP_TSN_GT(cum_ack, asoc->advanced_peer_ack_point)) { asoc->advanced_peer_ack_point = cum_ack; } /* C2. try to further move advancedPeerAckPoint ahead */ if ((asoc->prsctp_supported) && (asoc->pr_sctp_cnt > 0)) { struct sctp_tmit_chunk *lchk; uint32_t old_adv_peer_ack_point; old_adv_peer_ack_point = asoc->advanced_peer_ack_point; lchk = sctp_try_advance_peer_ack_point(stcb, asoc); /* C3. See if we need to send a Fwd-TSN */ if (SCTP_TSN_GT(asoc->advanced_peer_ack_point, cum_ack)) { /* * ISSUE with ECN, see FWD-TSN processing. */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOG_TRY_ADVANCE) { sctp_misc_ints(SCTP_FWD_TSN_CHECK, 0xee, cum_ack, asoc->advanced_peer_ack_point, old_adv_peer_ack_point); } if (SCTP_TSN_GT(asoc->advanced_peer_ack_point, old_adv_peer_ack_point)) { send_forward_tsn(stcb, asoc); } else if (lchk) { /* try to FR fwd-tsn's that get lost too */ if (lchk->rec.data.fwd_tsn_cnt >= 3) { send_forward_tsn(stcb, asoc); } } } if (lchk) { /* Assure a timer is up */ sctp_timer_start(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, lchk->whoTo); } } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SACK_RWND_LOGGING_ENABLE) { sctp_misc_ints(SCTP_SACK_RWND_UPDATE, a_rwnd, stcb->asoc.peers_rwnd, stcb->asoc.total_flight, stcb->asoc.total_output_queue_size); } } void sctp_update_acked(struct sctp_tcb *stcb, struct sctp_shutdown_chunk *cp, int *abort_flag) { /* Copy cum-ack */ uint32_t cum_ack, a_rwnd; cum_ack = ntohl(cp->cumulative_tsn_ack); /* Arrange so a_rwnd does NOT change */ a_rwnd = stcb->asoc.peers_rwnd + stcb->asoc.total_flight; /* Now call the express sack handling */ sctp_express_handle_sack(stcb, cum_ack, a_rwnd, abort_flag, 0); } static void sctp_kick_prsctp_reorder_queue(struct sctp_tcb *stcb, struct sctp_stream_in *strmin) { struct sctp_queued_to_read *ctl, *nctl; struct sctp_association *asoc; - uint16_t tt; + uint32_t tt; + int need_reasm_check = 0, old; asoc = &stcb->asoc; tt = strmin->last_sequence_delivered; + if (asoc->idata_supported) { + old = 0; + } else { + old = 1; + } /* * First deliver anything prior to and including the stream no that - * came in + * came in. */ - TAILQ_FOREACH_SAFE(ctl, &strmin->inqueue, next, nctl) { - if (SCTP_SSN_GE(tt, ctl->sinfo_ssn)) { + TAILQ_FOREACH_SAFE(ctl, &strmin->inqueue, next_instrm, nctl) { + if (SCTP_MSGID_GE(old, tt, ctl->sinfo_ssn)) { /* this is deliverable now */ - TAILQ_REMOVE(&strmin->inqueue, ctl, next); - /* subtract pending on streams */ - asoc->size_on_all_streams -= ctl->length; - sctp_ucount_decr(asoc->cnt_on_all_streams); - /* deliver it to at least the delivery-q */ - if (stcb->sctp_socket) { - sctp_mark_non_revokable(asoc, ctl->sinfo_tsn); - sctp_add_to_readq(stcb->sctp_ep, stcb, - ctl, - &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_HELD, SCTP_SO_NOT_LOCKED); + if (((ctl->sinfo_flags >> 8) & SCTP_DATA_NOT_FRAG) == SCTP_DATA_NOT_FRAG) { + if (ctl->on_strm_q) { + if (ctl->on_strm_q == SCTP_ON_ORDERED) { + TAILQ_REMOVE(&strmin->inqueue, ctl, next_instrm); + } else if (ctl->on_strm_q == SCTP_ON_UNORDERED) { + TAILQ_REMOVE(&strmin->uno_inqueue, ctl, next_instrm); + } else { + panic("strmin:%p ctl:%p unknown %d", + strmin, ctl, ctl->on_strm_q); + } + ctl->on_strm_q = 0; + } + /* subtract pending on streams */ + asoc->size_on_all_streams -= ctl->length; + sctp_ucount_decr(asoc->cnt_on_all_streams); + /* deliver it to at least the delivery-q */ + if (stcb->sctp_socket) { + sctp_mark_non_revokable(asoc, ctl->sinfo_tsn); + sctp_add_to_readq(stcb->sctp_ep, stcb, + ctl, + &stcb->sctp_socket->so_rcv, + 1, SCTP_READ_LOCK_HELD, + SCTP_SO_NOT_LOCKED); + } + } else { + /* Its a fragmented message */ + if (ctl->first_frag_seen) { + /* + * Make it so this is next to + * deliver, we restore later + */ + strmin->last_sequence_delivered = ctl->sinfo_ssn - 1; + need_reasm_check = 1; + break; + } } } else { /* no more delivery now. */ break; } } + if (need_reasm_check) { + int ret; + + ret = sctp_deliver_reasm_check(stcb, &stcb->asoc, strmin); + if (SCTP_MSGID_GT(old, tt, strmin->last_sequence_delivered)) { + /* Restore the next to deliver unless we are ahead */ + strmin->last_sequence_delivered = tt; + } + if (ret == 0) { + /* Left the front Partial one on */ + return; + } + need_reasm_check = 0; + } /* * now we must deliver things in queue the normal way if any are * now ready. */ tt = strmin->last_sequence_delivered + 1; - TAILQ_FOREACH_SAFE(ctl, &strmin->inqueue, next, nctl) { + TAILQ_FOREACH_SAFE(ctl, &strmin->inqueue, next_instrm, nctl) { if (tt == ctl->sinfo_ssn) { - /* this is deliverable now */ - TAILQ_REMOVE(&strmin->inqueue, ctl, next); - /* subtract pending on streams */ - asoc->size_on_all_streams -= ctl->length; - sctp_ucount_decr(asoc->cnt_on_all_streams); - /* deliver it to at least the delivery-q */ - strmin->last_sequence_delivered = ctl->sinfo_ssn; - if (stcb->sctp_socket) { - sctp_mark_non_revokable(asoc, ctl->sinfo_tsn); - sctp_add_to_readq(stcb->sctp_ep, stcb, - ctl, - &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_HELD, SCTP_SO_NOT_LOCKED); + if (((ctl->sinfo_flags >> 8) & SCTP_DATA_NOT_FRAG) == SCTP_DATA_NOT_FRAG) { + /* this is deliverable now */ + if (ctl->on_strm_q) { + if (ctl->on_strm_q == SCTP_ON_ORDERED) { + TAILQ_REMOVE(&strmin->inqueue, ctl, next_instrm); + } else if (ctl->on_strm_q == SCTP_ON_UNORDERED) { + TAILQ_REMOVE(&strmin->uno_inqueue, ctl, next_instrm); + } else { + panic("strmin:%p ctl:%p unknown %d", + strmin, ctl, ctl->on_strm_q); + } + ctl->on_strm_q = 0; + } + /* subtract pending on streams */ + asoc->size_on_all_streams -= ctl->length; + sctp_ucount_decr(asoc->cnt_on_all_streams); + /* deliver it to at least the delivery-q */ + strmin->last_sequence_delivered = ctl->sinfo_ssn; + if (stcb->sctp_socket) { + sctp_mark_non_revokable(asoc, ctl->sinfo_tsn); + sctp_add_to_readq(stcb->sctp_ep, stcb, + ctl, + &stcb->sctp_socket->so_rcv, 1, + SCTP_READ_LOCK_HELD, SCTP_SO_NOT_LOCKED); + } + tt = strmin->last_sequence_delivered + 1; + } else { + /* Its a fragmented message */ + if (ctl->first_frag_seen) { + /* + * Make it so this is next to + * deliver + */ + strmin->last_sequence_delivered = ctl->sinfo_ssn - 1; + need_reasm_check = 1; + break; + } } - tt = strmin->last_sequence_delivered + 1; } else { break; } } + if (need_reasm_check) { + (void)sctp_deliver_reasm_check(stcb, &stcb->asoc, strmin); + } } static void sctp_flush_reassm_for_str_seq(struct sctp_tcb *stcb, struct sctp_association *asoc, - uint16_t stream, uint16_t seq) + uint16_t stream, uint32_t seq) { + struct sctp_queued_to_read *control; + struct sctp_stream_in *strm; struct sctp_tmit_chunk *chk, *nchk; - /* For each one on here see if we need to toss it */ /* - * For now large messages held on the reasmqueue that are complete + * For now large messages held on the stream reasm that are complete * will be tossed too. We could in theory do more work to spin * through and stop after dumping one msg aka seeing the start of a * new msg at the head, and call the delivery function... to see if * it can be delivered... But for now we just dump everything on the * queue. */ - TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) { - /* - * Do not toss it if on a different stream or marked for - * unordered delivery in which case the stream sequence - * number has no meaning. - */ - if ((chk->rec.data.stream_number != stream) || - ((chk->rec.data.rcv_flags & SCTP_DATA_UNORDERED) == SCTP_DATA_UNORDERED)) { - continue; + strm = &asoc->strmin[stream]; + control = find_reasm_entry(strm, (uint32_t) seq, 0, 0); + if (control == NULL) { + /* Not found */ + return; + } + TAILQ_FOREACH_SAFE(chk, &control->reasm, sctp_next, nchk) { + /* Purge hanging chunks */ + TAILQ_REMOVE(&control->reasm, chk, sctp_next); + asoc->size_on_reasm_queue -= chk->send_size; + sctp_ucount_decr(asoc->cnt_on_reasm_queue); + if (chk->data) { + sctp_m_freem(chk->data); + chk->data = NULL; } - if (chk->rec.data.stream_seq == seq) { - /* It needs to be tossed */ - TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next); - if (SCTP_TSN_GT(chk->rec.data.TSN_seq, asoc->tsn_last_delivered)) { - asoc->tsn_last_delivered = chk->rec.data.TSN_seq; - asoc->str_of_pdapi = chk->rec.data.stream_number; - asoc->ssn_of_pdapi = chk->rec.data.stream_seq; - asoc->fragment_flags = chk->rec.data.rcv_flags; - } - asoc->size_on_reasm_queue -= chk->send_size; - sctp_ucount_decr(asoc->cnt_on_reasm_queue); - - /* Clear up any stream problem */ - if ((chk->rec.data.rcv_flags & SCTP_DATA_UNORDERED) != SCTP_DATA_UNORDERED && - SCTP_SSN_GT(chk->rec.data.stream_seq, asoc->strmin[chk->rec.data.stream_number].last_sequence_delivered)) { - /* - * We must dump forward this streams - * sequence number if the chunk is not - * unordered that is being skipped. There is - * a chance that if the peer does not - * include the last fragment in its FWD-TSN - * we WILL have a problem here since you - * would have a partial chunk in queue that - * may not be deliverable. Also if a Partial - * delivery API as started the user may get - * a partial chunk. The next read returning - * a new chunk... really ugly but I see no - * way around it! Maybe a notify?? - */ - asoc->strmin[chk->rec.data.stream_number].last_sequence_delivered = chk->rec.data.stream_seq; - } - if (chk->data) { - sctp_m_freem(chk->data); - chk->data = NULL; - } - sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); - } else if (SCTP_SSN_GT(chk->rec.data.stream_seq, seq)) { - /* - * If the stream_seq is > than the purging one, we - * are done - */ - break; + sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); + } + TAILQ_REMOVE(&strm->inqueue, control, next_instrm); + if (control->on_read_q == 0) { + sctp_free_remote_addr(control->whoFrom); + if (control->data) { + sctp_m_freem(control->data); + control->data = NULL; } + sctp_free_a_readq(stcb, control); } } void sctp_handle_forward_tsn(struct sctp_tcb *stcb, struct sctp_forward_tsn_chunk *fwd, int *abort_flag, struct mbuf *m, int offset) { /* The pr-sctp fwd tsn */ /* * here we will perform all the data receiver side steps for * processing FwdTSN, as required in by pr-sctp draft: * * Assume we get FwdTSN(x): * * 1) update local cumTSN to x 2) try to further advance cumTSN to x + * others we have 3) examine and update re-ordering queue on * pr-in-streams 4) clean up re-assembly queue 5) Send a sack to * report where we are. */ struct sctp_association *asoc; uint32_t new_cum_tsn, gap; unsigned int i, fwd_sz, m_size; uint32_t str_seq; struct sctp_stream_in *strm; - struct sctp_tmit_chunk *chk, *nchk; struct sctp_queued_to_read *ctl, *sv; asoc = &stcb->asoc; if ((fwd_sz = ntohs(fwd->ch.chunk_length)) < sizeof(struct sctp_forward_tsn_chunk)) { SCTPDBG(SCTP_DEBUG_INDATA1, "Bad size too small/big fwd-tsn\n"); return; } m_size = (stcb->asoc.mapping_array_size << 3); /*************************************************************/ /* 1. Here we update local cumTSN and shift the bitmap array */ /*************************************************************/ new_cum_tsn = ntohl(fwd->new_cumulative_tsn); if (SCTP_TSN_GE(asoc->cumulative_tsn, new_cum_tsn)) { /* Already got there ... */ return; } /* * now we know the new TSN is more advanced, let's find the actual * gap */ SCTP_CALC_TSN_TO_GAP(gap, new_cum_tsn, asoc->mapping_array_base_tsn); asoc->cumulative_tsn = new_cum_tsn; if (gap >= m_size) { if ((long)gap > sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv)) { struct mbuf *op_err; char msg[SCTP_DIAG_INFO_LEN]; /* * out of range (of single byte chunks in the rwnd I * give out). This must be an attacker. */ *abort_flag = 1; snprintf(msg, sizeof(msg), "New cum ack %8.8x too high, highest TSN %8.8x", new_cum_tsn, asoc->highest_tsn_inside_map); op_err = sctp_generate_cause(SCTP_CAUSE_PROTOCOL_VIOLATION, msg); - stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_35; + stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_INDATA + SCTP_LOC_33; sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); return; } SCTP_STAT_INCR(sctps_fwdtsn_map_over); memset(stcb->asoc.mapping_array, 0, stcb->asoc.mapping_array_size); asoc->mapping_array_base_tsn = new_cum_tsn + 1; asoc->highest_tsn_inside_map = new_cum_tsn; memset(stcb->asoc.nr_mapping_array, 0, stcb->asoc.mapping_array_size); asoc->highest_tsn_inside_nr_map = new_cum_tsn; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MAP_LOGGING_ENABLE) { sctp_log_map(0, 3, asoc->highest_tsn_inside_map, SCTP_MAP_SLIDE_RESULT); } } else { SCTP_TCB_LOCK_ASSERT(stcb); for (i = 0; i <= gap; i++) { if (!SCTP_IS_TSN_PRESENT(asoc->mapping_array, i) && !SCTP_IS_TSN_PRESENT(asoc->nr_mapping_array, i)) { SCTP_SET_TSN_PRESENT(asoc->nr_mapping_array, i); if (SCTP_TSN_GT(asoc->mapping_array_base_tsn + i, asoc->highest_tsn_inside_nr_map)) { asoc->highest_tsn_inside_nr_map = asoc->mapping_array_base_tsn + i; } } } } /*************************************************************/ /* 2. Clear up re-assembly queue */ /*************************************************************/ - /* - * First service it if pd-api is up, just in case we can progress it - * forward - */ - if (asoc->fragmented_delivery_inprogress) { - sctp_service_reassembly(stcb, asoc); - } - /* For each one on here see if we need to toss it */ - /* - * For now large messages held on the reasmqueue that are complete - * will be tossed too. We could in theory do more work to spin - * through and stop after dumping one msg aka seeing the start of a - * new msg at the head, and call the delivery function... to see if - * it can be delivered... But for now we just dump everything on the - * queue. - */ - TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) { - if (SCTP_TSN_GE(new_cum_tsn, chk->rec.data.TSN_seq)) { - /* It needs to be tossed */ - TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next); - if (SCTP_TSN_GT(chk->rec.data.TSN_seq, asoc->tsn_last_delivered)) { - asoc->tsn_last_delivered = chk->rec.data.TSN_seq; - asoc->str_of_pdapi = chk->rec.data.stream_number; - asoc->ssn_of_pdapi = chk->rec.data.stream_seq; - asoc->fragment_flags = chk->rec.data.rcv_flags; - } - asoc->size_on_reasm_queue -= chk->send_size; - sctp_ucount_decr(asoc->cnt_on_reasm_queue); - /* Clear up any stream problem */ - if ((chk->rec.data.rcv_flags & SCTP_DATA_UNORDERED) != SCTP_DATA_UNORDERED && - SCTP_SSN_GT(chk->rec.data.stream_seq, asoc->strmin[chk->rec.data.stream_number].last_sequence_delivered)) { - /* - * We must dump forward this streams - * sequence number if the chunk is not - * unordered that is being skipped. There is - * a chance that if the peer does not - * include the last fragment in its FWD-TSN - * we WILL have a problem here since you - * would have a partial chunk in queue that - * may not be deliverable. Also if a Partial - * delivery API as started the user may get - * a partial chunk. The next read returning - * a new chunk... really ugly but I see no - * way around it! Maybe a notify?? - */ - asoc->strmin[chk->rec.data.stream_number].last_sequence_delivered = chk->rec.data.stream_seq; - } - if (chk->data) { - sctp_m_freem(chk->data); - chk->data = NULL; - } - sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); - } else { - /* - * Ok we have gone beyond the end of the fwd-tsn's - * mark. - */ - break; - } - } + /* This is now done as part of clearing up the stream/seq */ + /*******************************************************/ /* 3. Update the PR-stream re-ordering queues and fix */ /* delivery issues as needed. */ /*******************************************************/ fwd_sz -= sizeof(*fwd); if (m && fwd_sz) { /* New method. */ unsigned int num_str; + uint32_t sequence; + uint16_t stream; + int old; struct sctp_strseq *stseq, strseqbuf; + struct sctp_strseq_mid *stseq_m, strseqbuf_m; offset += sizeof(*fwd); SCTP_INP_READ_LOCK(stcb->sctp_ep); - num_str = fwd_sz / sizeof(struct sctp_strseq); + if (asoc->idata_supported) { + num_str = fwd_sz / sizeof(struct sctp_strseq_mid); + old = 0; + } else { + num_str = fwd_sz / sizeof(struct sctp_strseq); + old = 1; + } for (i = 0; i < num_str; i++) { - uint16_t st; - - stseq = (struct sctp_strseq *)sctp_m_getptr(m, offset, - sizeof(struct sctp_strseq), - (uint8_t *) & strseqbuf); - offset += sizeof(struct sctp_strseq); - if (stseq == NULL) { - break; + if (asoc->idata_supported) { + stseq_m = (struct sctp_strseq_mid *)sctp_m_getptr(m, offset, + sizeof(struct sctp_strseq_mid), + (uint8_t *) & strseqbuf_m); + offset += sizeof(struct sctp_strseq_mid); + if (stseq_m == NULL) { + break; + } + stream = ntohs(stseq_m->stream); + sequence = ntohl(stseq_m->msg_id); + } else { + stseq = (struct sctp_strseq *)sctp_m_getptr(m, offset, + sizeof(struct sctp_strseq), + (uint8_t *) & strseqbuf); + offset += sizeof(struct sctp_strseq); + if (stseq == NULL) { + break; + } + stream = ntohs(stseq->stream); + sequence = (uint32_t) ntohs(stseq->sequence); } /* Convert */ - st = ntohs(stseq->stream); - stseq->stream = st; - st = ntohs(stseq->sequence); - stseq->sequence = st; /* now process */ /* * Ok we now look for the stream/seq on the read * queue where its not all delivered. If we find it * we transmute the read entry into a PDI_ABORTED. */ - if (stseq->stream >= asoc->streamincnt) { + if (stream >= asoc->streamincnt) { /* screwed up streams, stop! */ break; } - if ((asoc->str_of_pdapi == stseq->stream) && - (asoc->ssn_of_pdapi == stseq->sequence)) { + if ((asoc->str_of_pdapi == stream) && + (asoc->ssn_of_pdapi == sequence)) { /* * If this is the one we were partially * delivering now then we no longer are. * Note this will change with the reassembly * re-write. */ asoc->fragmented_delivery_inprogress = 0; } - sctp_flush_reassm_for_str_seq(stcb, asoc, stseq->stream, stseq->sequence); + strm = &asoc->strmin[stream]; + sctp_flush_reassm_for_str_seq(stcb, asoc, stream, sequence); TAILQ_FOREACH(ctl, &stcb->sctp_ep->read_queue, next) { - if ((ctl->sinfo_stream == stseq->stream) && - (ctl->sinfo_ssn == stseq->sequence)) { - str_seq = (stseq->stream << 16) | stseq->sequence; - ctl->end_added = 1; + if ((ctl->sinfo_stream == stream) && + (ctl->sinfo_ssn == sequence)) { + str_seq = (stream << 16) | (0x0000ffff & sequence); ctl->pdapi_aborted = 1; sv = stcb->asoc.control_pdapi; + ctl->end_added = 1; + if (ctl->on_strm_q == SCTP_ON_ORDERED) { + TAILQ_REMOVE(&strm->inqueue, ctl, next_instrm); + } else if (ctl->on_strm_q == SCTP_ON_UNORDERED) { + TAILQ_REMOVE(&strm->uno_inqueue, ctl, next_instrm); + } else if (ctl->on_strm_q) { + panic("strm:%p ctl:%p unknown %d", + strm, ctl, ctl->on_strm_q); + } + ctl->on_strm_q = 0; stcb->asoc.control_pdapi = ctl; sctp_ulp_notify(SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION, stcb, SCTP_PARTIAL_DELIVERY_ABORTED, (void *)&str_seq, SCTP_SO_NOT_LOCKED); stcb->asoc.control_pdapi = sv; break; - } else if ((ctl->sinfo_stream == stseq->stream) && - SCTP_SSN_GT(ctl->sinfo_ssn, stseq->sequence)) { + } else if ((ctl->sinfo_stream == stream) && + SCTP_MSGID_GT(old, ctl->sinfo_ssn, sequence)) { /* We are past our victim SSN */ break; } } - strm = &asoc->strmin[stseq->stream]; - if (SCTP_SSN_GT(stseq->sequence, strm->last_sequence_delivered)) { + if (SCTP_MSGID_GT(old, sequence, strm->last_sequence_delivered)) { /* Update the sequence number */ - strm->last_sequence_delivered = stseq->sequence; + strm->last_sequence_delivered = sequence; } /* now kick the stream the new way */ /* sa_ignore NO_NULL_CHK */ sctp_kick_prsctp_reorder_queue(stcb, strm); } SCTP_INP_READ_UNLOCK(stcb->sctp_ep); } /* * Now slide thing forward. */ sctp_slide_mapping_arrays(stcb); - - if (!TAILQ_EMPTY(&asoc->reasmqueue)) { - /* now lets kick out and check for more fragmented delivery */ - /* sa_ignore NO_NULL_CHK */ - sctp_deliver_reasm_check(stcb, &stcb->asoc); - } } Index: head/sys/netinet/sctp_indata.h =================================================================== --- head/sys/netinet/sctp_indata.h (revision 297661) +++ head/sys/netinet/sctp_indata.h (revision 297662) @@ -1,123 +1,119 @@ /*- * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * a) Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * b) Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the distribution. * * c) Neither the name of Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #ifndef _NETINET_SCTP_INDATA_H_ #define _NETINET_SCTP_INDATA_H_ #if defined(_KERNEL) || defined(__Userspace__) struct sctp_queued_to_read * sctp_build_readq_entry(struct sctp_tcb *stcb, struct sctp_nets *net, uint32_t tsn, uint32_t ppid, uint32_t context, uint16_t stream_no, - uint16_t stream_seq, uint8_t flags, + uint32_t stream_seq, uint8_t flags, struct mbuf *dm); -#define sctp_build_readq_entry_mac(_ctl, in_it, context, net, tsn, ppid, stream_no, stream_seq, flags, dm) do { \ +#define sctp_build_readq_entry_mac(_ctl, in_it, context, net, tsn, ppid, stream_no, stream_seq, flags, dm, tfsn, msgid) do { \ if (_ctl) { \ atomic_add_int(&((net)->ref_count), 1); \ + memset(_ctl, 0, sizeof(struct sctp_queued_to_read)); \ (_ctl)->sinfo_stream = stream_no; \ (_ctl)->sinfo_ssn = stream_seq; \ + TAILQ_INIT(&_ctl->reasm); \ + (_ctl)->top_fsn = tfsn; \ + (_ctl)->msg_id = msgid; \ (_ctl)->sinfo_flags = (flags << 8); \ (_ctl)->sinfo_ppid = ppid; \ (_ctl)->sinfo_context = context; \ - (_ctl)->sinfo_timetolive = 0; \ + (_ctl)->fsn_included = 0xffffffff; \ + (_ctl)->top_fsn = 0xffffffff; \ (_ctl)->sinfo_tsn = tsn; \ (_ctl)->sinfo_cumtsn = tsn; \ (_ctl)->sinfo_assoc_id = sctp_get_associd((in_it)); \ - (_ctl)->length = 0; \ - (_ctl)->held_length = 0; \ (_ctl)->whoFrom = net; \ (_ctl)->data = dm; \ - (_ctl)->tail_mbuf = NULL; \ - (_ctl)->aux_data = NULL; \ (_ctl)->stcb = (in_it); \ (_ctl)->port_from = (in_it)->rport; \ - (_ctl)->spec_flags = 0; \ - (_ctl)->do_not_ref_stcb = 0; \ - (_ctl)->end_added = 0; \ - (_ctl)->pdapi_aborted = 0; \ - (_ctl)->some_taken = 0; \ } \ } while (0) struct mbuf * sctp_build_ctl_nchunk(struct sctp_inpcb *inp, struct sctp_sndrcvinfo *sinfo); void sctp_set_rwnd(struct sctp_tcb *, struct sctp_association *); uint32_t sctp_calc_rwnd(struct sctp_tcb *stcb, struct sctp_association *asoc); void sctp_express_handle_sack(struct sctp_tcb *stcb, uint32_t cumack, uint32_t rwnd, int *abort_now, int ecne_seen); void sctp_handle_sack(struct mbuf *m, int offset_seg, int offset_dup, struct sctp_tcb *stcb, uint16_t num_seg, uint16_t num_nr_seg, uint16_t num_dup, int *abort_now, uint8_t flags, uint32_t cum_ack, uint32_t rwnd, int ecne_seen); /* draft-ietf-tsvwg-usctp */ void sctp_handle_forward_tsn(struct sctp_tcb *, struct sctp_forward_tsn_chunk *, int *, struct mbuf *, int); struct sctp_tmit_chunk * sctp_try_advance_peer_ack_point(struct sctp_tcb *, struct sctp_association *); void sctp_service_queues(struct sctp_tcb *, struct sctp_association *); void sctp_update_acked(struct sctp_tcb *, struct sctp_shutdown_chunk *, int *); int sctp_process_data(struct mbuf **, int, int *, int, struct sctp_inpcb *, struct sctp_tcb *, struct sctp_nets *, uint32_t *); void sctp_slide_mapping_arrays(struct sctp_tcb *stcb); void sctp_sack_check(struct sctp_tcb *, int); #endif #endif Index: head/sys/netinet/sctp_input.c =================================================================== --- head/sys/netinet/sctp_input.c (revision 297661) +++ head/sys/netinet/sctp_input.c (revision 297662) @@ -1,6229 +1,6262 @@ /*- * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved. * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * a) Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * b) Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the distribution. * * c) Neither the name of Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if defined(INET) || defined(INET6) #include #endif #include static void sctp_stop_all_cookie_timers(struct sctp_tcb *stcb) { struct sctp_nets *net; /* * This now not only stops all cookie timers it also stops any INIT * timers as well. This will make sure that the timers are stopped * in all collision cases. */ SCTP_TCB_LOCK_ASSERT(stcb); TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { if (net->rxt_timer.type == SCTP_TIMER_TYPE_COOKIE) { sctp_timer_stop(SCTP_TIMER_TYPE_COOKIE, stcb->sctp_ep, stcb, net, SCTP_FROM_SCTP_INPUT + SCTP_LOC_1); } else if (net->rxt_timer.type == SCTP_TIMER_TYPE_INIT) { sctp_timer_stop(SCTP_TIMER_TYPE_INIT, stcb->sctp_ep, stcb, net, SCTP_FROM_SCTP_INPUT + SCTP_LOC_2); } } } /* INIT handler */ static void sctp_handle_init(struct mbuf *m, int iphlen, int offset, struct sockaddr *src, struct sockaddr *dst, struct sctphdr *sh, struct sctp_init_chunk *cp, struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sctp_nets *net, int *abort_no_unlock, uint8_t mflowtype, uint32_t mflowid, uint32_t vrf_id, uint16_t port) { struct sctp_init *init; struct mbuf *op_err; SCTPDBG(SCTP_DEBUG_INPUT2, "sctp_handle_init: handling INIT tcb:%p\n", (void *)stcb); if (stcb == NULL) { SCTP_INP_RLOCK(inp); } /* validate length */ if (ntohs(cp->ch.chunk_length) < sizeof(struct sctp_init_chunk)) { op_err = sctp_generate_cause(SCTP_CAUSE_INVALID_PARAM, ""); sctp_abort_association(inp, stcb, m, iphlen, src, dst, sh, op_err, mflowtype, mflowid, vrf_id, port); if (stcb) *abort_no_unlock = 1; goto outnow; } /* validate parameters */ init = &cp->init; if (init->initiate_tag == 0) { /* protocol error... send abort */ op_err = sctp_generate_cause(SCTP_CAUSE_INVALID_PARAM, ""); sctp_abort_association(inp, stcb, m, iphlen, src, dst, sh, op_err, mflowtype, mflowid, vrf_id, port); if (stcb) *abort_no_unlock = 1; goto outnow; } if (ntohl(init->a_rwnd) < SCTP_MIN_RWND) { /* invalid parameter... send abort */ op_err = sctp_generate_cause(SCTP_CAUSE_INVALID_PARAM, ""); sctp_abort_association(inp, stcb, m, iphlen, src, dst, sh, op_err, mflowtype, mflowid, vrf_id, port); if (stcb) *abort_no_unlock = 1; goto outnow; } if (init->num_inbound_streams == 0) { /* protocol error... send abort */ op_err = sctp_generate_cause(SCTP_CAUSE_INVALID_PARAM, ""); sctp_abort_association(inp, stcb, m, iphlen, src, dst, sh, op_err, mflowtype, mflowid, vrf_id, port); if (stcb) *abort_no_unlock = 1; goto outnow; } if (init->num_outbound_streams == 0) { /* protocol error... send abort */ op_err = sctp_generate_cause(SCTP_CAUSE_INVALID_PARAM, ""); sctp_abort_association(inp, stcb, m, iphlen, src, dst, sh, op_err, mflowtype, mflowid, vrf_id, port); if (stcb) *abort_no_unlock = 1; goto outnow; } if (sctp_validate_init_auth_params(m, offset + sizeof(*cp), offset + ntohs(cp->ch.chunk_length))) { /* auth parameter(s) error... send abort */ op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), "Problem with AUTH parameters"); sctp_abort_association(inp, stcb, m, iphlen, src, dst, sh, op_err, mflowtype, mflowid, vrf_id, port); if (stcb) *abort_no_unlock = 1; goto outnow; } /* * We are only accepting if we have a socket with positive * so_qlimit. */ if ((stcb == NULL) && ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || (inp->sctp_socket == NULL) || (inp->sctp_socket->so_qlimit == 0))) { /* * FIX ME ?? What about TCP model and we have a * match/restart case? Actually no fix is needed. the lookup * will always find the existing assoc so stcb would not be * NULL. It may be questionable to do this since we COULD * just send back the INIT-ACK and hope that the app did * accept()'s by the time the COOKIE was sent. But there is * a price to pay for COOKIE generation and I don't want to * pay it on the chance that the app will actually do some * accepts(). The App just looses and should NOT be in this * state :-) */ if (SCTP_BASE_SYSCTL(sctp_blackhole) == 0) { op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), "No listener"); sctp_send_abort(m, iphlen, src, dst, sh, 0, op_err, mflowtype, mflowid, inp->fibnum, vrf_id, port); } goto outnow; } if ((stcb != NULL) && (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_ACK_SENT)) { SCTPDBG(SCTP_DEBUG_INPUT3, "sctp_handle_init: sending SHUTDOWN-ACK\n"); sctp_send_shutdown_ack(stcb, NULL); sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_CONTROL_PROC, SCTP_SO_NOT_LOCKED); } else { SCTPDBG(SCTP_DEBUG_INPUT3, "sctp_handle_init: sending INIT-ACK\n"); sctp_send_initiate_ack(inp, stcb, net, m, iphlen, offset, src, dst, sh, cp, mflowtype, mflowid, vrf_id, port, ((stcb == NULL) ? SCTP_HOLDS_LOCK : SCTP_NOT_LOCKED)); } outnow: if (stcb == NULL) { SCTP_INP_RUNLOCK(inp); } } /* * process peer "INIT/INIT-ACK" chunk returns value < 0 on error */ int sctp_is_there_unsent_data(struct sctp_tcb *stcb, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ) { int unsent_data = 0; unsigned int i; struct sctp_stream_queue_pending *sp; struct sctp_association *asoc; /* * This function returns the number of streams that have true unsent * data on them. Note that as it looks through it will clean up any * places that have old data that has been sent but left at top of * stream queue. */ asoc = &stcb->asoc; SCTP_TCB_SEND_LOCK(stcb); if (!stcb->asoc.ss_functions.sctp_ss_is_empty(stcb, asoc)) { /* Check to see if some data queued */ for (i = 0; i < stcb->asoc.streamoutcnt; i++) { /* sa_ignore FREED_MEMORY */ sp = TAILQ_FIRST(&stcb->asoc.strmout[i].outqueue); if (sp == NULL) { continue; } if ((sp->msg_is_complete) && (sp->length == 0) && (sp->sender_all_done)) { /* * We are doing differed cleanup. Last time * through when we took all the data the * sender_all_done was not set. */ if (sp->put_last_out == 0) { SCTP_PRINTF("Gak, put out entire msg with NO end!-1\n"); SCTP_PRINTF("sender_done:%d len:%d msg_comp:%d put_last_out:%d\n", sp->sender_all_done, sp->length, sp->msg_is_complete, sp->put_last_out); } atomic_subtract_int(&stcb->asoc.stream_queue_cnt, 1); TAILQ_REMOVE(&stcb->asoc.strmout[i].outqueue, sp, next); if (sp->net) { sctp_free_remote_addr(sp->net); sp->net = NULL; } if (sp->data) { sctp_m_freem(sp->data); sp->data = NULL; } sctp_free_a_strmoq(stcb, sp, so_locked); } else { unsent_data++; break; } } } SCTP_TCB_SEND_UNLOCK(stcb); return (unsent_data); } static int sctp_process_init(struct sctp_init_chunk *cp, struct sctp_tcb *stcb) { struct sctp_init *init; struct sctp_association *asoc; struct sctp_nets *lnet; unsigned int i; init = &cp->init; asoc = &stcb->asoc; /* save off parameters */ asoc->peer_vtag = ntohl(init->initiate_tag); asoc->peers_rwnd = ntohl(init->a_rwnd); /* init tsn's */ asoc->highest_tsn_inside_map = asoc->asconf_seq_in = ntohl(init->initial_tsn) - 1; if (!TAILQ_EMPTY(&asoc->nets)) { /* update any ssthresh's that may have a default */ TAILQ_FOREACH(lnet, &asoc->nets, sctp_next) { lnet->ssthresh = asoc->peers_rwnd; if (SCTP_BASE_SYSCTL(sctp_logging_level) & (SCTP_CWND_MONITOR_ENABLE | SCTP_CWND_LOGGING_ENABLE)) { sctp_log_cwnd(stcb, lnet, 0, SCTP_CWND_INITIALIZATION); } } } SCTP_TCB_SEND_LOCK(stcb); if (asoc->pre_open_streams > ntohs(init->num_inbound_streams)) { unsigned int newcnt; struct sctp_stream_out *outs; struct sctp_stream_queue_pending *sp, *nsp; struct sctp_tmit_chunk *chk, *nchk; /* abandon the upper streams */ newcnt = ntohs(init->num_inbound_streams); TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) { if (chk->rec.data.stream_number >= newcnt) { TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next); asoc->send_queue_cnt--; if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) { asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--; #ifdef INVARIANTS } else { panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number); #endif } if (chk->data != NULL) { sctp_free_bufspace(stcb, asoc, chk, 1); sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, chk, SCTP_SO_NOT_LOCKED); if (chk->data) { sctp_m_freem(chk->data); chk->data = NULL; } } sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); /* sa_ignore FREED_MEMORY */ } } if (asoc->strmout) { for (i = newcnt; i < asoc->pre_open_streams; i++) { outs = &asoc->strmout[i]; TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) { TAILQ_REMOVE(&outs->outqueue, sp, next); asoc->stream_queue_cnt--; sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb, 0, sp, SCTP_SO_NOT_LOCKED); if (sp->data) { sctp_m_freem(sp->data); sp->data = NULL; } if (sp->net) { sctp_free_remote_addr(sp->net); sp->net = NULL; } /* Free the chunk */ sctp_free_a_strmoq(stcb, sp, SCTP_SO_NOT_LOCKED); /* sa_ignore FREED_MEMORY */ } outs->state = SCTP_STREAM_CLOSED; } } /* cut back the count */ asoc->pre_open_streams = newcnt; } SCTP_TCB_SEND_UNLOCK(stcb); asoc->streamoutcnt = asoc->pre_open_streams; if (asoc->strmout) { for (i = 0; i < asoc->streamoutcnt; i++) { asoc->strmout[i].state = SCTP_STREAM_OPEN; } } /* EY - nr_sack: initialize highest tsn in nr_mapping_array */ asoc->highest_tsn_inside_nr_map = asoc->highest_tsn_inside_map; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MAP_LOGGING_ENABLE) { sctp_log_map(0, 5, asoc->highest_tsn_inside_map, SCTP_MAP_SLIDE_RESULT); } /* This is the next one we expect */ asoc->str_reset_seq_in = asoc->asconf_seq_in + 1; asoc->mapping_array_base_tsn = ntohl(init->initial_tsn); asoc->tsn_last_delivered = asoc->cumulative_tsn = asoc->asconf_seq_in; asoc->advanced_peer_ack_point = asoc->last_acked_seq; /* open the requested streams */ if (asoc->strmin != NULL) { /* Free the old ones */ - struct sctp_queued_to_read *ctl, *nctl; - for (i = 0; i < asoc->streamincnt; i++) { - TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[i].inqueue, next, nctl) { - TAILQ_REMOVE(&asoc->strmin[i].inqueue, ctl, next); - sctp_free_remote_addr(ctl->whoFrom); - ctl->whoFrom = NULL; - sctp_m_freem(ctl->data); - ctl->data = NULL; - sctp_free_a_readq(stcb, ctl); - } + sctp_clean_up_stream(stcb, &asoc->strmin[i].inqueue); + sctp_clean_up_stream(stcb, &asoc->strmin[i].uno_inqueue); } SCTP_FREE(asoc->strmin, SCTP_M_STRMI); } if (asoc->max_inbound_streams > ntohs(init->num_outbound_streams)) { asoc->streamincnt = ntohs(init->num_outbound_streams); } else { asoc->streamincnt = asoc->max_inbound_streams; } SCTP_MALLOC(asoc->strmin, struct sctp_stream_in *, asoc->streamincnt * sizeof(struct sctp_stream_in), SCTP_M_STRMI); if (asoc->strmin == NULL) { /* we didn't get memory for the streams! */ SCTPDBG(SCTP_DEBUG_INPUT2, "process_init: couldn't get memory for the streams!\n"); return (-1); } for (i = 0; i < asoc->streamincnt; i++) { asoc->strmin[i].stream_no = i; - asoc->strmin[i].last_sequence_delivered = 0xffff; + asoc->strmin[i].last_sequence_delivered = 0xffffffff; TAILQ_INIT(&asoc->strmin[i].inqueue); + TAILQ_INIT(&asoc->strmin[i].uno_inqueue); + asoc->strmin[i].pd_api_started = 0; asoc->strmin[i].delivery_started = 0; } /* * load_address_from_init will put the addresses into the * association when the COOKIE is processed or the INIT-ACK is * processed. Both types of COOKIE's existing and new call this * routine. It will remove addresses that are no longer in the * association (for the restarting case where addresses are * removed). Up front when the INIT arrives we will discard it if it * is a restart and new addresses have been added. */ /* sa_ignore MEMLEAK */ return (0); } /* * INIT-ACK message processing/consumption returns value < 0 on error */ static int sctp_process_init_ack(struct mbuf *m, int iphlen, int offset, struct sockaddr *src, struct sockaddr *dst, struct sctphdr *sh, struct sctp_init_ack_chunk *cp, struct sctp_tcb *stcb, struct sctp_nets *net, int *abort_no_unlock, uint8_t mflowtype, uint32_t mflowid, uint32_t vrf_id) { struct sctp_association *asoc; struct mbuf *op_err; int retval, abort_flag; uint32_t initack_limit; int nat_friendly = 0; /* First verify that we have no illegal param's */ abort_flag = 0; op_err = sctp_arethere_unrecognized_parameters(m, (offset + sizeof(struct sctp_init_chunk)), &abort_flag, (struct sctp_chunkhdr *)cp, &nat_friendly); if (abort_flag) { /* Send an abort and notify peer */ sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); *abort_no_unlock = 1; return (-1); } asoc = &stcb->asoc; asoc->peer_supports_nat = (uint8_t) nat_friendly; /* process the peer's parameters in the INIT-ACK */ retval = sctp_process_init((struct sctp_init_chunk *)cp, stcb); if (retval < 0) { return (retval); } initack_limit = offset + ntohs(cp->ch.chunk_length); /* load all addresses */ if ((retval = sctp_load_addresses_from_init(stcb, m, (offset + sizeof(struct sctp_init_chunk)), initack_limit, src, dst, NULL))) { op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), "Problem with address parameters"); SCTPDBG(SCTP_DEBUG_INPUT1, "Load addresses from INIT causes an abort %d\n", retval); sctp_abort_association(stcb->sctp_ep, stcb, m, iphlen, src, dst, sh, op_err, mflowtype, mflowid, vrf_id, net->port); *abort_no_unlock = 1; return (-1); } /* if the peer doesn't support asconf, flush the asconf queue */ if (asoc->asconf_supported == 0) { struct sctp_asconf_addr *param, *nparam; TAILQ_FOREACH_SAFE(param, &asoc->asconf_queue, next, nparam) { TAILQ_REMOVE(&asoc->asconf_queue, param, next); SCTP_FREE(param, SCTP_M_ASC_ADDR); } } stcb->asoc.peer_hmac_id = sctp_negotiate_hmacid(stcb->asoc.peer_hmacs, stcb->asoc.local_hmacs); if (op_err) { sctp_queue_op_err(stcb, op_err); /* queuing will steal away the mbuf chain to the out queue */ op_err = NULL; } /* extract the cookie and queue it to "echo" it back... */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_THRESHOLD_LOGGING) { sctp_misc_ints(SCTP_THRESHOLD_CLEAR, stcb->asoc.overall_error_count, 0, SCTP_FROM_SCTP_INPUT, __LINE__); } stcb->asoc.overall_error_count = 0; net->error_count = 0; /* * Cancel the INIT timer, We do this first before queueing the * cookie. We always cancel at the primary to assue that we are * canceling the timer started by the INIT which always goes to the * primary. */ sctp_timer_stop(SCTP_TIMER_TYPE_INIT, stcb->sctp_ep, stcb, asoc->primary_destination, SCTP_FROM_SCTP_INPUT + SCTP_LOC_3); /* calculate the RTO */ net->RTO = sctp_calculate_rto(stcb, asoc, net, &asoc->time_entered, sctp_align_safe_nocopy, SCTP_RTT_FROM_NON_DATA); retval = sctp_send_cookie_echo(m, offset, stcb, net); if (retval < 0) { /* * No cookie, we probably should send a op error. But in any * case if there is no cookie in the INIT-ACK, we can * abandon the peer, its broke. */ if (retval == -3) { uint16_t len; len = (uint16_t) (sizeof(struct sctp_error_missing_param) + sizeof(uint16_t)); /* We abort with an error of missing mandatory param */ op_err = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA); if (op_err != NULL) { struct sctp_error_missing_param *cause; SCTP_BUF_LEN(op_err) = len; cause = mtod(op_err, struct sctp_error_missing_param *); /* Subtract the reserved param */ cause->cause.code = htons(SCTP_CAUSE_MISSING_PARAM); cause->cause.length = htons(len); cause->num_missing_params = htonl(1); cause->type[0] = htons(SCTP_STATE_COOKIE); } sctp_abort_association(stcb->sctp_ep, stcb, m, iphlen, src, dst, sh, op_err, mflowtype, mflowid, vrf_id, net->port); *abort_no_unlock = 1; } return (retval); } return (0); } static void sctp_handle_heartbeat_ack(struct sctp_heartbeat_chunk *cp, struct sctp_tcb *stcb, struct sctp_nets *net) { union sctp_sockstore store; struct sctp_nets *r_net, *f_net; struct timeval tv; int req_prim = 0; uint16_t old_error_counter; if (ntohs(cp->ch.chunk_length) != sizeof(struct sctp_heartbeat_chunk)) { /* Invalid length */ return; } memset(&store, 0, sizeof(store)); switch (cp->heartbeat.hb_info.addr_family) { #ifdef INET case AF_INET: if (cp->heartbeat.hb_info.addr_len == sizeof(struct sockaddr_in)) { store.sin.sin_family = cp->heartbeat.hb_info.addr_family; store.sin.sin_len = cp->heartbeat.hb_info.addr_len; store.sin.sin_port = stcb->rport; memcpy(&store.sin.sin_addr, cp->heartbeat.hb_info.address, sizeof(store.sin.sin_addr)); } else { return; } break; #endif #ifdef INET6 case AF_INET6: if (cp->heartbeat.hb_info.addr_len == sizeof(struct sockaddr_in6)) { store.sin6.sin6_family = cp->heartbeat.hb_info.addr_family; store.sin6.sin6_len = cp->heartbeat.hb_info.addr_len; store.sin6.sin6_port = stcb->rport; memcpy(&store.sin6.sin6_addr, cp->heartbeat.hb_info.address, sizeof(struct in6_addr)); } else { return; } break; #endif default: return; } r_net = sctp_findnet(stcb, &store.sa); if (r_net == NULL) { SCTPDBG(SCTP_DEBUG_INPUT1, "Huh? I can't find the address I sent it to, discard\n"); return; } if ((r_net && (r_net->dest_state & SCTP_ADDR_UNCONFIRMED)) && (r_net->heartbeat_random1 == cp->heartbeat.hb_info.random_value1) && (r_net->heartbeat_random2 == cp->heartbeat.hb_info.random_value2)) { /* * If the its a HB and it's random value is correct when can * confirm the destination. */ r_net->dest_state &= ~SCTP_ADDR_UNCONFIRMED; if (r_net->dest_state & SCTP_ADDR_REQ_PRIMARY) { stcb->asoc.primary_destination = r_net; r_net->dest_state &= ~SCTP_ADDR_REQ_PRIMARY; f_net = TAILQ_FIRST(&stcb->asoc.nets); if (f_net != r_net) { /* * first one on the list is NOT the primary * sctp_cmpaddr() is much more efficent if * the primary is the first on the list, * make it so. */ TAILQ_REMOVE(&stcb->asoc.nets, r_net, sctp_next); TAILQ_INSERT_HEAD(&stcb->asoc.nets, r_net, sctp_next); } req_prim = 1; } sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_CONFIRMED, stcb, 0, (void *)r_net, SCTP_SO_NOT_LOCKED); sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep, stcb, r_net, SCTP_FROM_SCTP_INPUT + SCTP_LOC_4); sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep, stcb, r_net); } old_error_counter = r_net->error_count; r_net->error_count = 0; r_net->hb_responded = 1; tv.tv_sec = cp->heartbeat.hb_info.time_value_1; tv.tv_usec = cp->heartbeat.hb_info.time_value_2; /* Now lets do a RTO with this */ r_net->RTO = sctp_calculate_rto(stcb, &stcb->asoc, r_net, &tv, sctp_align_safe_nocopy, SCTP_RTT_FROM_NON_DATA); if (!(r_net->dest_state & SCTP_ADDR_REACHABLE)) { r_net->dest_state |= SCTP_ADDR_REACHABLE; sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_UP, stcb, 0, (void *)r_net, SCTP_SO_NOT_LOCKED); } if (r_net->dest_state & SCTP_ADDR_PF) { r_net->dest_state &= ~SCTP_ADDR_PF; stcb->asoc.cc_functions.sctp_cwnd_update_exit_pf(stcb, net); } if (old_error_counter > 0) { sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep, stcb, r_net, SCTP_FROM_SCTP_INPUT + SCTP_LOC_5); sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep, stcb, r_net); } if (r_net == stcb->asoc.primary_destination) { if (stcb->asoc.alternate) { /* release the alternate, primary is good */ sctp_free_remote_addr(stcb->asoc.alternate); stcb->asoc.alternate = NULL; } } /* Mobility adaptation */ if (req_prim) { if ((sctp_is_mobility_feature_on(stcb->sctp_ep, SCTP_MOBILITY_BASE) || sctp_is_mobility_feature_on(stcb->sctp_ep, SCTP_MOBILITY_FASTHANDOFF)) && sctp_is_mobility_feature_on(stcb->sctp_ep, SCTP_MOBILITY_PRIM_DELETED)) { sctp_timer_stop(SCTP_TIMER_TYPE_PRIM_DELETED, stcb->sctp_ep, stcb, NULL, SCTP_FROM_SCTP_INPUT + SCTP_LOC_6); if (sctp_is_mobility_feature_on(stcb->sctp_ep, SCTP_MOBILITY_FASTHANDOFF)) { sctp_assoc_immediate_retrans(stcb, stcb->asoc.primary_destination); } if (sctp_is_mobility_feature_on(stcb->sctp_ep, SCTP_MOBILITY_BASE)) { sctp_move_chunks_from_net(stcb, stcb->asoc.deleted_primary); } sctp_delete_prim_timer(stcb->sctp_ep, stcb, stcb->asoc.deleted_primary); } } } static int sctp_handle_nat_colliding_state(struct sctp_tcb *stcb) { /* * return 0 means we want you to proceed with the abort non-zero * means no abort processing */ struct sctpasochead *head; if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) { /* generate a new vtag and send init */ LIST_REMOVE(stcb, sctp_asocs); stcb->asoc.my_vtag = sctp_select_a_tag(stcb->sctp_ep, stcb->sctp_ep->sctp_lport, stcb->rport, 1); head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))]; /* * put it in the bucket in the vtag hash of assoc's for the * system */ LIST_INSERT_HEAD(head, stcb, sctp_asocs); sctp_send_initiate(stcb->sctp_ep, stcb, SCTP_SO_NOT_LOCKED); return (1); } if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_ECHOED) { /* * treat like a case where the cookie expired i.e.: - dump * current cookie. - generate a new vtag. - resend init. */ /* generate a new vtag and send init */ LIST_REMOVE(stcb, sctp_asocs); stcb->asoc.state &= ~SCTP_STATE_COOKIE_ECHOED; stcb->asoc.state |= SCTP_STATE_COOKIE_WAIT; sctp_stop_all_cookie_timers(stcb); sctp_toss_old_cookies(stcb, &stcb->asoc); stcb->asoc.my_vtag = sctp_select_a_tag(stcb->sctp_ep, stcb->sctp_ep->sctp_lport, stcb->rport, 1); head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))]; /* * put it in the bucket in the vtag hash of assoc's for the * system */ LIST_INSERT_HEAD(head, stcb, sctp_asocs); sctp_send_initiate(stcb->sctp_ep, stcb, SCTP_SO_NOT_LOCKED); return (1); } return (0); } static int sctp_handle_nat_missing_state(struct sctp_tcb *stcb, struct sctp_nets *net) { /* * return 0 means we want you to proceed with the abort non-zero * means no abort processing */ if (stcb->asoc.auth_supported == 0) { SCTPDBG(SCTP_DEBUG_INPUT2, "sctp_handle_nat_missing_state: Peer does not support AUTH, cannot send an asconf\n"); return (0); } sctp_asconf_send_nat_state_update(stcb, net); return (1); } static void sctp_handle_abort(struct sctp_abort_chunk *abort, struct sctp_tcb *stcb, struct sctp_nets *net) { #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) struct socket *so; #endif uint16_t len; uint16_t error; SCTPDBG(SCTP_DEBUG_INPUT2, "sctp_handle_abort: handling ABORT\n"); if (stcb == NULL) return; len = ntohs(abort->ch.chunk_length); if (len > sizeof(struct sctp_chunkhdr)) { /* * Need to check the cause codes for our two magic nat * aborts which don't kill the assoc necessarily. */ struct sctp_gen_error_cause *cause; cause = (struct sctp_gen_error_cause *)(abort + 1); error = ntohs(cause->code); if (error == SCTP_CAUSE_NAT_COLLIDING_STATE) { SCTPDBG(SCTP_DEBUG_INPUT2, "Received Colliding state abort flags:%x\n", abort->ch.chunk_flags); if (sctp_handle_nat_colliding_state(stcb)) { return; } } else if (error == SCTP_CAUSE_NAT_MISSING_STATE) { SCTPDBG(SCTP_DEBUG_INPUT2, "Received missing state abort flags:%x\n", abort->ch.chunk_flags); if (sctp_handle_nat_missing_state(stcb, net)) { return; } } } else { error = 0; } /* stop any receive timers */ sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, net, SCTP_FROM_SCTP_INPUT + SCTP_LOC_7); /* notify user of the abort and clean up... */ sctp_abort_notification(stcb, 1, error, abort, SCTP_SO_NOT_LOCKED); /* free the tcb */ SCTP_STAT_INCR_COUNTER32(sctps_aborted); if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) || (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { SCTP_STAT_DECR_GAUGE32(sctps_currestab); } #ifdef SCTP_ASOCLOG_OF_TSNS sctp_print_out_track_log(stcb); #endif #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) so = SCTP_INP_SO(stcb->sctp_ep); atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); #endif stcb->asoc.state |= SCTP_STATE_WAS_ABORTED; (void)sctp_free_assoc(stcb->sctp_ep, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_INPUT + SCTP_LOC_8); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif SCTPDBG(SCTP_DEBUG_INPUT2, "sctp_handle_abort: finished\n"); } static void sctp_start_net_timers(struct sctp_tcb *stcb) { uint32_t cnt_hb_sent; struct sctp_nets *net; cnt_hb_sent = 0; TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { /* * For each network start: 1) A pmtu timer. 2) A HB timer 3) * If the dest in unconfirmed send a hb as well if under * max_hb_burst have been sent. */ sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, stcb->sctp_ep, stcb, net); sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep, stcb, net); if ((net->dest_state & SCTP_ADDR_UNCONFIRMED) && (cnt_hb_sent < SCTP_BASE_SYSCTL(sctp_hb_maxburst))) { sctp_send_hb(stcb, net, SCTP_SO_NOT_LOCKED); cnt_hb_sent++; } } if (cnt_hb_sent) { sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_COOKIE_ACK, SCTP_SO_NOT_LOCKED); } } static void sctp_handle_shutdown(struct sctp_shutdown_chunk *cp, struct sctp_tcb *stcb, struct sctp_nets *net, int *abort_flag) { struct sctp_association *asoc; int some_on_streamwheel; int old_state; #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) struct socket *so; #endif SCTPDBG(SCTP_DEBUG_INPUT2, "sctp_handle_shutdown: handling SHUTDOWN\n"); if (stcb == NULL) return; asoc = &stcb->asoc; if ((SCTP_GET_STATE(asoc) == SCTP_STATE_COOKIE_WAIT) || (SCTP_GET_STATE(asoc) == SCTP_STATE_COOKIE_ECHOED)) { return; } if (ntohs(cp->ch.chunk_length) != sizeof(struct sctp_shutdown_chunk)) { /* Shutdown NOT the expected size */ return; } old_state = SCTP_GET_STATE(asoc); sctp_update_acked(stcb, cp, abort_flag); if (*abort_flag) { return; } if (asoc->control_pdapi) { /* * With a normal shutdown we assume the end of last record. */ SCTP_INP_READ_LOCK(stcb->sctp_ep); + if (asoc->control_pdapi->on_strm_q) { + struct sctp_stream_in *strm; + + strm = &asoc->strmin[asoc->control_pdapi->sinfo_stream]; + if (asoc->control_pdapi->on_strm_q == SCTP_ON_UNORDERED) { + /* Unordered */ + TAILQ_REMOVE(&strm->uno_inqueue, asoc->control_pdapi, next_instrm); + asoc->control_pdapi->on_strm_q = 0; + } else if (asoc->control_pdapi->on_strm_q == SCTP_ON_ORDERED) { + /* Ordered */ + TAILQ_REMOVE(&strm->inqueue, asoc->control_pdapi, next_instrm); + asoc->control_pdapi->on_strm_q = 0; + } else { + panic("Unknown state on ctrl:%p on_strm_q:%d", + asoc->control_pdapi, + asoc->control_pdapi->on_strm_q); + } + } + printf("%s:%d End added to ctl:%p (%d)\n", + __FUNCTION__, + __LINE__, + asoc->control_pdapi, + asoc->control_pdapi->on_strm_q); asoc->control_pdapi->end_added = 1; asoc->control_pdapi->pdapi_aborted = 1; asoc->control_pdapi = NULL; SCTP_INP_READ_UNLOCK(stcb->sctp_ep); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) so = SCTP_INP_SO(stcb->sctp_ep); atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) { /* assoc was freed while we were unlocked */ SCTP_SOCKET_UNLOCK(so, 1); return; } #endif if (stcb->sctp_socket) { sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket); } #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif } /* goto SHUTDOWN_RECEIVED state to block new requests */ if (stcb->sctp_socket) { if ((SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_RECEIVED) && (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT) && (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT)) { SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_RECEIVED); SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING); /* * notify upper layer that peer has initiated a * shutdown */ sctp_ulp_notify(SCTP_NOTIFY_PEER_SHUTDOWN, stcb, 0, NULL, SCTP_SO_NOT_LOCKED); /* reset time */ (void)SCTP_GETTIME_TIMEVAL(&asoc->time_entered); } } if (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_SENT) { /* * stop the shutdown timer, since we WILL move to * SHUTDOWN-ACK-SENT. */ sctp_timer_stop(SCTP_TIMER_TYPE_SHUTDOWN, stcb->sctp_ep, stcb, net, SCTP_FROM_SCTP_INPUT + SCTP_LOC_9); } /* Now is there unsent data on a stream somewhere? */ some_on_streamwheel = sctp_is_there_unsent_data(stcb, SCTP_SO_NOT_LOCKED); if (!TAILQ_EMPTY(&asoc->send_queue) || !TAILQ_EMPTY(&asoc->sent_queue) || some_on_streamwheel) { /* By returning we will push more data out */ return; } else { /* no outstanding data to send, so move on... */ /* send SHUTDOWN-ACK */ /* move to SHUTDOWN-ACK-SENT state */ if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) || (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { SCTP_STAT_DECR_GAUGE32(sctps_currestab); } SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING); if (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT) { SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_ACK_SENT); sctp_stop_timers_for_shutdown(stcb); sctp_send_shutdown_ack(stcb, net); sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNACK, stcb->sctp_ep, stcb, net); } else if (old_state == SCTP_STATE_SHUTDOWN_ACK_SENT) { sctp_send_shutdown_ack(stcb, net); } } } static void sctp_handle_shutdown_ack(struct sctp_shutdown_ack_chunk *cp SCTP_UNUSED, struct sctp_tcb *stcb, struct sctp_nets *net) { struct sctp_association *asoc; #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) struct socket *so; so = SCTP_INP_SO(stcb->sctp_ep); #endif SCTPDBG(SCTP_DEBUG_INPUT2, "sctp_handle_shutdown_ack: handling SHUTDOWN ACK\n"); if (stcb == NULL) return; asoc = &stcb->asoc; /* process according to association state */ if ((SCTP_GET_STATE(asoc) == SCTP_STATE_COOKIE_WAIT) || (SCTP_GET_STATE(asoc) == SCTP_STATE_COOKIE_ECHOED)) { /* unexpected SHUTDOWN-ACK... do OOTB handling... */ sctp_send_shutdown_complete(stcb, net, 1); SCTP_TCB_UNLOCK(stcb); return; } if ((SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) && (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) { /* unexpected SHUTDOWN-ACK... so ignore... */ SCTP_TCB_UNLOCK(stcb); return; } if (asoc->control_pdapi) { /* * With a normal shutdown we assume the end of last record. */ SCTP_INP_READ_LOCK(stcb->sctp_ep); + printf("%s:%d End added to ctl:%p (%d)\n", + __FUNCTION__, + __LINE__, + asoc->control_pdapi, + asoc->control_pdapi->on_strm_q); asoc->control_pdapi->end_added = 1; asoc->control_pdapi->pdapi_aborted = 1; asoc->control_pdapi = NULL; SCTP_INP_READ_UNLOCK(stcb->sctp_ep); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) { /* assoc was freed while we were unlocked */ SCTP_SOCKET_UNLOCK(so, 1); return; } #endif sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif } #ifdef INVARIANTS if (!TAILQ_EMPTY(&asoc->send_queue) || !TAILQ_EMPTY(&asoc->sent_queue) || !stcb->asoc.ss_functions.sctp_ss_is_empty(stcb, asoc)) { panic("Queues are not empty when handling SHUTDOWN-ACK"); } #endif /* stop the timer */ sctp_timer_stop(SCTP_TIMER_TYPE_SHUTDOWN, stcb->sctp_ep, stcb, net, SCTP_FROM_SCTP_INPUT + SCTP_LOC_10); /* send SHUTDOWN-COMPLETE */ sctp_send_shutdown_complete(stcb, net, 0); /* notify upper layer protocol */ if (stcb->sctp_socket) { if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { stcb->sctp_socket->so_snd.sb_cc = 0; } sctp_ulp_notify(SCTP_NOTIFY_ASSOC_DOWN, stcb, 0, NULL, SCTP_SO_NOT_LOCKED); } SCTP_STAT_INCR_COUNTER32(sctps_shutdown); /* free the TCB but first save off the ep */ #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); #endif (void)sctp_free_assoc(stcb->sctp_ep, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_INPUT + SCTP_LOC_11); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif } /* * Skip past the param header and then we will find the chunk that caused the * problem. There are two possiblities ASCONF or FWD-TSN other than that and * our peer must be broken. */ static void sctp_process_unrecog_chunk(struct sctp_tcb *stcb, struct sctp_paramhdr *phdr, struct sctp_nets *net) { struct sctp_chunkhdr *chk; chk = (struct sctp_chunkhdr *)((caddr_t)phdr + sizeof(*phdr)); switch (chk->chunk_type) { case SCTP_ASCONF_ACK: case SCTP_ASCONF: sctp_asconf_cleanup(stcb, net); break; + case SCTP_IFORWARD_CUM_TSN: case SCTP_FORWARD_CUM_TSN: stcb->asoc.prsctp_supported = 0; break; default: SCTPDBG(SCTP_DEBUG_INPUT2, "Peer does not support chunk type %d(%x)??\n", chk->chunk_type, (uint32_t) chk->chunk_type); break; } } /* * Skip past the param header and then we will find the param that caused the * problem. There are a number of param's in a ASCONF OR the prsctp param * these will turn of specific features. * XXX: Is this the right thing to do? */ static void sctp_process_unrecog_param(struct sctp_tcb *stcb, struct sctp_paramhdr *phdr) { struct sctp_paramhdr *pbad; pbad = phdr + 1; switch (ntohs(pbad->param_type)) { /* pr-sctp draft */ case SCTP_PRSCTP_SUPPORTED: stcb->asoc.prsctp_supported = 0; break; case SCTP_SUPPORTED_CHUNK_EXT: break; /* draft-ietf-tsvwg-addip-sctp */ case SCTP_HAS_NAT_SUPPORT: stcb->asoc.peer_supports_nat = 0; break; case SCTP_ADD_IP_ADDRESS: case SCTP_DEL_IP_ADDRESS: case SCTP_SET_PRIM_ADDR: stcb->asoc.asconf_supported = 0; break; case SCTP_SUCCESS_REPORT: case SCTP_ERROR_CAUSE_IND: SCTPDBG(SCTP_DEBUG_INPUT2, "Huh, the peer does not support success? or error cause?\n"); SCTPDBG(SCTP_DEBUG_INPUT2, "Turning off ASCONF to this strange peer\n"); stcb->asoc.asconf_supported = 0; break; default: SCTPDBG(SCTP_DEBUG_INPUT2, "Peer does not support param type %d(%x)??\n", pbad->param_type, (uint32_t) pbad->param_type); break; } } static int sctp_handle_error(struct sctp_chunkhdr *ch, struct sctp_tcb *stcb, struct sctp_nets *net) { int chklen; struct sctp_paramhdr *phdr; uint16_t error, error_type; uint16_t error_len; struct sctp_association *asoc; int adjust; #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) struct socket *so; #endif /* parse through all of the errors and process */ asoc = &stcb->asoc; phdr = (struct sctp_paramhdr *)((caddr_t)ch + sizeof(struct sctp_chunkhdr)); chklen = ntohs(ch->chunk_length) - sizeof(struct sctp_chunkhdr); error = 0; while ((size_t)chklen >= sizeof(struct sctp_paramhdr)) { /* Process an Error Cause */ error_type = ntohs(phdr->param_type); error_len = ntohs(phdr->param_length); if ((error_len > chklen) || (error_len == 0)) { /* invalid param length for this param */ SCTPDBG(SCTP_DEBUG_INPUT1, "Bogus length in error param- chunk left:%d errorlen:%d\n", chklen, error_len); return (0); } if (error == 0) { /* report the first error cause */ error = error_type; } switch (error_type) { case SCTP_CAUSE_INVALID_STREAM: case SCTP_CAUSE_MISSING_PARAM: case SCTP_CAUSE_INVALID_PARAM: case SCTP_CAUSE_NO_USER_DATA: SCTPDBG(SCTP_DEBUG_INPUT1, "Software error we got a %d back? We have a bug :/ (or do they?)\n", error_type); break; case SCTP_CAUSE_NAT_COLLIDING_STATE: SCTPDBG(SCTP_DEBUG_INPUT2, "Received Colliding state abort flags:%x\n", ch->chunk_flags); if (sctp_handle_nat_colliding_state(stcb)) { return (0); } break; case SCTP_CAUSE_NAT_MISSING_STATE: SCTPDBG(SCTP_DEBUG_INPUT2, "Received missing state abort flags:%x\n", ch->chunk_flags); if (sctp_handle_nat_missing_state(stcb, net)) { return (0); } break; case SCTP_CAUSE_STALE_COOKIE: /* * We only act if we have echoed a cookie and are * waiting. */ if (SCTP_GET_STATE(asoc) == SCTP_STATE_COOKIE_ECHOED) { int *p; p = (int *)((caddr_t)phdr + sizeof(*phdr)); /* Save the time doubled */ asoc->cookie_preserve_req = ntohl(*p) << 1; asoc->stale_cookie_count++; if (asoc->stale_cookie_count > asoc->max_init_times) { sctp_abort_notification(stcb, 0, 0, NULL, SCTP_SO_NOT_LOCKED); /* now free the asoc */ #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) so = SCTP_INP_SO(stcb->sctp_ep); atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); #endif (void)sctp_free_assoc(stcb->sctp_ep, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_INPUT + SCTP_LOC_12); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif return (-1); } /* blast back to INIT state */ sctp_toss_old_cookies(stcb, &stcb->asoc); asoc->state &= ~SCTP_STATE_COOKIE_ECHOED; asoc->state |= SCTP_STATE_COOKIE_WAIT; sctp_stop_all_cookie_timers(stcb); sctp_send_initiate(stcb->sctp_ep, stcb, SCTP_SO_NOT_LOCKED); } break; case SCTP_CAUSE_UNRESOLVABLE_ADDR: /* * Nothing we can do here, we don't do hostname * addresses so if the peer does not like my IPv6 * (or IPv4 for that matter) it does not matter. If * they don't support that type of address, they can * NOT possibly get that packet type... i.e. with no * IPv6 you can't recieve a IPv6 packet. so we can * safely ignore this one. If we ever added support * for HOSTNAME Addresses, then we would need to do * something here. */ break; case SCTP_CAUSE_UNRECOG_CHUNK: sctp_process_unrecog_chunk(stcb, phdr, net); break; case SCTP_CAUSE_UNRECOG_PARAM: sctp_process_unrecog_param(stcb, phdr); break; case SCTP_CAUSE_COOKIE_IN_SHUTDOWN: /* * We ignore this since the timer will drive out a * new cookie anyway and there timer will drive us * to send a SHUTDOWN_COMPLETE. We can't send one * here since we don't have their tag. */ break; case SCTP_CAUSE_DELETING_LAST_ADDR: case SCTP_CAUSE_RESOURCE_SHORTAGE: case SCTP_CAUSE_DELETING_SRC_ADDR: /* * We should NOT get these here, but in a * ASCONF-ACK. */ SCTPDBG(SCTP_DEBUG_INPUT2, "Peer sends ASCONF errors in a Operational Error?<%d>?\n", error_type); break; case SCTP_CAUSE_OUT_OF_RESC: /* * And what, pray tell do we do with the fact that * the peer is out of resources? Not really sure we * could do anything but abort. I suspect this * should have came WITH an abort instead of in a * OP-ERROR. */ break; default: SCTPDBG(SCTP_DEBUG_INPUT1, "sctp_handle_error: unknown error type = 0x%xh\n", error_type); break; } adjust = SCTP_SIZE32(error_len); chklen -= adjust; phdr = (struct sctp_paramhdr *)((caddr_t)phdr + adjust); } sctp_ulp_notify(SCTP_NOTIFY_REMOTE_ERROR, stcb, error, ch, SCTP_SO_NOT_LOCKED); return (0); } static int sctp_handle_init_ack(struct mbuf *m, int iphlen, int offset, struct sockaddr *src, struct sockaddr *dst, struct sctphdr *sh, struct sctp_init_ack_chunk *cp, struct sctp_tcb *stcb, struct sctp_nets *net, int *abort_no_unlock, uint8_t mflowtype, uint32_t mflowid, uint32_t vrf_id) { struct sctp_init_ack *init_ack; struct mbuf *op_err; SCTPDBG(SCTP_DEBUG_INPUT2, "sctp_handle_init_ack: handling INIT-ACK\n"); if (stcb == NULL) { SCTPDBG(SCTP_DEBUG_INPUT2, "sctp_handle_init_ack: TCB is null\n"); return (-1); } if (ntohs(cp->ch.chunk_length) < sizeof(struct sctp_init_ack_chunk)) { /* Invalid length */ op_err = sctp_generate_cause(SCTP_CAUSE_INVALID_PARAM, ""); sctp_abort_association(stcb->sctp_ep, stcb, m, iphlen, src, dst, sh, op_err, mflowtype, mflowid, vrf_id, net->port); *abort_no_unlock = 1; return (-1); } init_ack = &cp->init; /* validate parameters */ if (init_ack->initiate_tag == 0) { /* protocol error... send an abort */ op_err = sctp_generate_cause(SCTP_CAUSE_INVALID_PARAM, ""); sctp_abort_association(stcb->sctp_ep, stcb, m, iphlen, src, dst, sh, op_err, mflowtype, mflowid, vrf_id, net->port); *abort_no_unlock = 1; return (-1); } if (ntohl(init_ack->a_rwnd) < SCTP_MIN_RWND) { /* protocol error... send an abort */ op_err = sctp_generate_cause(SCTP_CAUSE_INVALID_PARAM, ""); sctp_abort_association(stcb->sctp_ep, stcb, m, iphlen, src, dst, sh, op_err, mflowtype, mflowid, vrf_id, net->port); *abort_no_unlock = 1; return (-1); } if (init_ack->num_inbound_streams == 0) { /* protocol error... send an abort */ op_err = sctp_generate_cause(SCTP_CAUSE_INVALID_PARAM, ""); sctp_abort_association(stcb->sctp_ep, stcb, m, iphlen, src, dst, sh, op_err, mflowtype, mflowid, vrf_id, net->port); *abort_no_unlock = 1; return (-1); } if (init_ack->num_outbound_streams == 0) { /* protocol error... send an abort */ op_err = sctp_generate_cause(SCTP_CAUSE_INVALID_PARAM, ""); sctp_abort_association(stcb->sctp_ep, stcb, m, iphlen, src, dst, sh, op_err, mflowtype, mflowid, vrf_id, net->port); *abort_no_unlock = 1; return (-1); } /* process according to association state... */ switch (stcb->asoc.state & SCTP_STATE_MASK) { case SCTP_STATE_COOKIE_WAIT: /* this is the expected state for this chunk */ /* process the INIT-ACK parameters */ if (stcb->asoc.primary_destination->dest_state & SCTP_ADDR_UNCONFIRMED) { /* * The primary is where we sent the INIT, we can * always consider it confirmed when the INIT-ACK is * returned. Do this before we load addresses * though. */ stcb->asoc.primary_destination->dest_state &= ~SCTP_ADDR_UNCONFIRMED; sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_CONFIRMED, stcb, 0, (void *)stcb->asoc.primary_destination, SCTP_SO_NOT_LOCKED); } if (sctp_process_init_ack(m, iphlen, offset, src, dst, sh, cp, stcb, net, abort_no_unlock, mflowtype, mflowid, vrf_id) < 0) { /* error in parsing parameters */ return (-1); } /* update our state */ SCTPDBG(SCTP_DEBUG_INPUT2, "moving to COOKIE-ECHOED state\n"); SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_COOKIE_ECHOED); /* reset the RTO calc */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_THRESHOLD_LOGGING) { sctp_misc_ints(SCTP_THRESHOLD_CLEAR, stcb->asoc.overall_error_count, 0, SCTP_FROM_SCTP_INPUT, __LINE__); } stcb->asoc.overall_error_count = 0; (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); /* * collapse the init timer back in case of a exponential * backoff */ sctp_timer_start(SCTP_TIMER_TYPE_COOKIE, stcb->sctp_ep, stcb, net); /* * the send at the end of the inbound data processing will * cause the cookie to be sent */ break; case SCTP_STATE_SHUTDOWN_SENT: /* incorrect state... discard */ break; case SCTP_STATE_COOKIE_ECHOED: /* incorrect state... discard */ break; case SCTP_STATE_OPEN: /* incorrect state... discard */ break; case SCTP_STATE_EMPTY: case SCTP_STATE_INUSE: default: /* incorrect state... discard */ return (-1); break; } SCTPDBG(SCTP_DEBUG_INPUT1, "Leaving handle-init-ack end\n"); return (0); } static struct sctp_tcb * sctp_process_cookie_new(struct mbuf *m, int iphlen, int offset, struct sockaddr *src, struct sockaddr *dst, struct sctphdr *sh, struct sctp_state_cookie *cookie, int cookie_len, struct sctp_inpcb *inp, struct sctp_nets **netp, struct sockaddr *init_src, int *notification, int auth_skipped, uint32_t auth_offset, uint32_t auth_len, uint8_t mflowtype, uint32_t mflowid, uint32_t vrf_id, uint16_t port); /* * handle a state cookie for an existing association m: input packet mbuf * chain-- assumes a pullup on IP/SCTP/COOKIE-ECHO chunk note: this is a * "split" mbuf and the cookie signature does not exist offset: offset into * mbuf to the cookie-echo chunk */ static struct sctp_tcb * sctp_process_cookie_existing(struct mbuf *m, int iphlen, int offset, struct sockaddr *src, struct sockaddr *dst, struct sctphdr *sh, struct sctp_state_cookie *cookie, int cookie_len, struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sctp_nets **netp, struct sockaddr *init_src, int *notification, int auth_skipped, uint32_t auth_offset, uint32_t auth_len, uint8_t mflowtype, uint32_t mflowid, uint32_t vrf_id, uint16_t port) { struct sctp_association *asoc; struct sctp_init_chunk *init_cp, init_buf; struct sctp_init_ack_chunk *initack_cp, initack_buf; struct sctp_nets *net; struct mbuf *op_err; int init_offset, initack_offset, i; int retval; int spec_flag = 0; uint32_t how_indx; #if defined(SCTP_DETAILED_STR_STATS) int j; #endif net = *netp; /* I know that the TCB is non-NULL from the caller */ asoc = &stcb->asoc; for (how_indx = 0; how_indx < sizeof(asoc->cookie_how); how_indx++) { if (asoc->cookie_how[how_indx] == 0) break; } if (how_indx < sizeof(asoc->cookie_how)) { asoc->cookie_how[how_indx] = 1; } if (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_ACK_SENT) { /* SHUTDOWN came in after sending INIT-ACK */ sctp_send_shutdown_ack(stcb, stcb->asoc.primary_destination); op_err = sctp_generate_cause(SCTP_CAUSE_COOKIE_IN_SHUTDOWN, ""); sctp_send_operr_to(src, dst, sh, cookie->peers_vtag, op_err, mflowtype, mflowid, inp->fibnum, vrf_id, net->port); if (how_indx < sizeof(asoc->cookie_how)) asoc->cookie_how[how_indx] = 2; return (NULL); } /* * find and validate the INIT chunk in the cookie (peer's info) the * INIT should start after the cookie-echo header struct (chunk * header, state cookie header struct) */ init_offset = offset += sizeof(struct sctp_cookie_echo_chunk); init_cp = (struct sctp_init_chunk *) sctp_m_getptr(m, init_offset, sizeof(struct sctp_init_chunk), (uint8_t *) & init_buf); if (init_cp == NULL) { /* could not pull a INIT chunk in cookie */ return (NULL); } if (init_cp->ch.chunk_type != SCTP_INITIATION) { return (NULL); } /* * find and validate the INIT-ACK chunk in the cookie (my info) the * INIT-ACK follows the INIT chunk */ initack_offset = init_offset + SCTP_SIZE32(ntohs(init_cp->ch.chunk_length)); initack_cp = (struct sctp_init_ack_chunk *) sctp_m_getptr(m, initack_offset, sizeof(struct sctp_init_ack_chunk), (uint8_t *) & initack_buf); if (initack_cp == NULL) { /* could not pull INIT-ACK chunk in cookie */ return (NULL); } if (initack_cp->ch.chunk_type != SCTP_INITIATION_ACK) { return (NULL); } if ((ntohl(initack_cp->init.initiate_tag) == asoc->my_vtag) && (ntohl(init_cp->init.initiate_tag) == asoc->peer_vtag)) { /* * case D in Section 5.2.4 Table 2: MMAA process accordingly * to get into the OPEN state */ if (ntohl(initack_cp->init.initial_tsn) != asoc->init_seq_number) { /*- * Opps, this means that we somehow generated two vtag's * the same. I.e. we did: * Us Peer * <---INIT(tag=a)------ * ----INIT-ACK(tag=t)--> * ----INIT(tag=t)------> *1 * <---INIT-ACK(tag=a)--- * <----CE(tag=t)------------- *2 * * At point *1 we should be generating a different * tag t'. Which means we would throw away the CE and send * ours instead. Basically this is case C (throw away side). */ if (how_indx < sizeof(asoc->cookie_how)) asoc->cookie_how[how_indx] = 17; return (NULL); } switch (SCTP_GET_STATE(asoc)) { case SCTP_STATE_COOKIE_WAIT: case SCTP_STATE_COOKIE_ECHOED: /* * INIT was sent but got a COOKIE_ECHO with the * correct tags... just accept it...but we must * process the init so that we can make sure we have * the right seq no's. */ /* First we must process the INIT !! */ retval = sctp_process_init(init_cp, stcb); if (retval < 0) { if (how_indx < sizeof(asoc->cookie_how)) asoc->cookie_how[how_indx] = 3; return (NULL); } /* we have already processed the INIT so no problem */ sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net, SCTP_FROM_SCTP_INPUT + SCTP_LOC_13); sctp_timer_stop(SCTP_TIMER_TYPE_INIT, inp, stcb, net, SCTP_FROM_SCTP_INPUT + SCTP_LOC_14); /* update current state */ if (SCTP_GET_STATE(asoc) == SCTP_STATE_COOKIE_ECHOED) SCTP_STAT_INCR_COUNTER32(sctps_activeestab); else SCTP_STAT_INCR_COUNTER32(sctps_collisionestab); SCTP_SET_STATE(asoc, SCTP_STATE_OPEN); if (asoc->state & SCTP_STATE_SHUTDOWN_PENDING) { sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb, asoc->primary_destination); } SCTP_STAT_INCR_GAUGE32(sctps_currestab); sctp_stop_all_cookie_timers(stcb); if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) && (inp->sctp_socket->so_qlimit == 0) ) { #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) struct socket *so; #endif /* * Here is where collision would go if we * did a connect() and instead got a * init/init-ack/cookie done before the * init-ack came back.. */ stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) so = SCTP_INP_SO(stcb->sctp_ep); atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); atomic_add_int(&stcb->asoc.refcnt, -1); if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) { SCTP_SOCKET_UNLOCK(so, 1); return (NULL); } #endif soisconnected(stcb->sctp_socket); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif } /* notify upper layer */ *notification = SCTP_NOTIFY_ASSOC_UP; /* * since we did not send a HB make sure we don't * double things */ net->hb_responded = 1; net->RTO = sctp_calculate_rto(stcb, asoc, net, &cookie->time_entered, sctp_align_unsafe_makecopy, SCTP_RTT_FROM_NON_DATA); if (stcb->asoc.sctp_autoclose_ticks && (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTOCLOSE))) { sctp_timer_start(SCTP_TIMER_TYPE_AUTOCLOSE, inp, stcb, NULL); } break; default: /* * we're in the OPEN state (or beyond), so peer must * have simply lost the COOKIE-ACK */ break; } /* end switch */ sctp_stop_all_cookie_timers(stcb); /* * We ignore the return code here.. not sure if we should * somehow abort.. but we do have an existing asoc. This * really should not fail. */ if (sctp_load_addresses_from_init(stcb, m, init_offset + sizeof(struct sctp_init_chunk), initack_offset, src, dst, init_src)) { if (how_indx < sizeof(asoc->cookie_how)) asoc->cookie_how[how_indx] = 4; return (NULL); } /* respond with a COOKIE-ACK */ sctp_toss_old_cookies(stcb, asoc); sctp_send_cookie_ack(stcb); if (how_indx < sizeof(asoc->cookie_how)) asoc->cookie_how[how_indx] = 5; return (stcb); } if (ntohl(initack_cp->init.initiate_tag) != asoc->my_vtag && ntohl(init_cp->init.initiate_tag) == asoc->peer_vtag && cookie->tie_tag_my_vtag == 0 && cookie->tie_tag_peer_vtag == 0) { /* * case C in Section 5.2.4 Table 2: XMOO silently discard */ if (how_indx < sizeof(asoc->cookie_how)) asoc->cookie_how[how_indx] = 6; return (NULL); } /* * If nat support, and the below and stcb is established, send back * a ABORT(colliding state) if we are established. */ if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) && (asoc->peer_supports_nat) && ((ntohl(initack_cp->init.initiate_tag) == asoc->my_vtag) && ((ntohl(init_cp->init.initiate_tag) != asoc->peer_vtag) || (asoc->peer_vtag == 0)))) { /* * Special case - Peer's support nat. We may have two init's * that we gave out the same tag on since one was not * established.. i.e. we get INIT from host-1 behind the nat * and we respond tag-a, we get a INIT from host-2 behind * the nat and we get tag-a again. Then we bring up host-1 * (or 2's) assoc, Then comes the cookie from hsot-2 (or 1). * Now we have colliding state. We must send an abort here * with colliding state indication. */ op_err = sctp_generate_cause(SCTP_CAUSE_NAT_COLLIDING_STATE, ""); sctp_send_abort(m, iphlen, src, dst, sh, 0, op_err, mflowtype, mflowid, inp->fibnum, vrf_id, port); return (NULL); } if ((ntohl(initack_cp->init.initiate_tag) == asoc->my_vtag) && ((ntohl(init_cp->init.initiate_tag) != asoc->peer_vtag) || (asoc->peer_vtag == 0))) { /* * case B in Section 5.2.4 Table 2: MXAA or MOAA my info * should be ok, re-accept peer info */ if (ntohl(initack_cp->init.initial_tsn) != asoc->init_seq_number) { /* * Extension of case C. If we hit this, then the * random number generator returned the same vtag * when we first sent our INIT-ACK and when we later * sent our INIT. The side with the seq numbers that * are different will be the one that normnally * would have hit case C. This in effect "extends" * our vtags in this collision case to be 64 bits. * The same collision could occur aka you get both * vtag and seq number the same twice in a row.. but * is much less likely. If it did happen then we * would proceed through and bring up the assoc.. we * may end up with the wrong stream setup however.. * which would be bad.. but there is no way to * tell.. until we send on a stream that does not * exist :-) */ if (how_indx < sizeof(asoc->cookie_how)) asoc->cookie_how[how_indx] = 7; return (NULL); } if (how_indx < sizeof(asoc->cookie_how)) asoc->cookie_how[how_indx] = 8; sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net, SCTP_FROM_SCTP_INPUT + SCTP_LOC_15); sctp_stop_all_cookie_timers(stcb); /* * since we did not send a HB make sure we don't double * things */ net->hb_responded = 1; if (stcb->asoc.sctp_autoclose_ticks && sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTOCLOSE)) { sctp_timer_start(SCTP_TIMER_TYPE_AUTOCLOSE, inp, stcb, NULL); } asoc->my_rwnd = ntohl(initack_cp->init.a_rwnd); asoc->pre_open_streams = ntohs(initack_cp->init.num_outbound_streams); if (ntohl(init_cp->init.initiate_tag) != asoc->peer_vtag) { /* * Ok the peer probably discarded our data (if we * echoed a cookie+data). So anything on the * sent_queue should be marked for retransmit, we * may not get something to kick us so it COULD * still take a timeout to move these.. but it can't * hurt to mark them. */ struct sctp_tmit_chunk *chk; TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) { if (chk->sent < SCTP_DATAGRAM_RESEND) { chk->sent = SCTP_DATAGRAM_RESEND; sctp_flight_size_decrease(chk); sctp_total_flight_decrease(stcb, chk); sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt); spec_flag++; } } } /* process the INIT info (peer's info) */ retval = sctp_process_init(init_cp, stcb); if (retval < 0) { if (how_indx < sizeof(asoc->cookie_how)) asoc->cookie_how[how_indx] = 9; return (NULL); } if (sctp_load_addresses_from_init(stcb, m, init_offset + sizeof(struct sctp_init_chunk), initack_offset, src, dst, init_src)) { if (how_indx < sizeof(asoc->cookie_how)) asoc->cookie_how[how_indx] = 10; return (NULL); } if ((asoc->state & SCTP_STATE_COOKIE_WAIT) || (asoc->state & SCTP_STATE_COOKIE_ECHOED)) { *notification = SCTP_NOTIFY_ASSOC_UP; if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) && (inp->sctp_socket->so_qlimit == 0)) { #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) struct socket *so; #endif stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) so = SCTP_INP_SO(stcb->sctp_ep); atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); atomic_add_int(&stcb->asoc.refcnt, -1); if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) { SCTP_SOCKET_UNLOCK(so, 1); return (NULL); } #endif soisconnected(stcb->sctp_socket); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif } if (SCTP_GET_STATE(asoc) == SCTP_STATE_COOKIE_ECHOED) SCTP_STAT_INCR_COUNTER32(sctps_activeestab); else SCTP_STAT_INCR_COUNTER32(sctps_collisionestab); SCTP_STAT_INCR_GAUGE32(sctps_currestab); } else if (SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) { SCTP_STAT_INCR_COUNTER32(sctps_restartestab); } else { SCTP_STAT_INCR_COUNTER32(sctps_collisionestab); } SCTP_SET_STATE(asoc, SCTP_STATE_OPEN); if (asoc->state & SCTP_STATE_SHUTDOWN_PENDING) { sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb, asoc->primary_destination); } sctp_stop_all_cookie_timers(stcb); sctp_toss_old_cookies(stcb, asoc); sctp_send_cookie_ack(stcb); if (spec_flag) { /* * only if we have retrans set do we do this. What * this call does is get only the COOKIE-ACK out and * then when we return the normal call to * sctp_chunk_output will get the retrans out behind * this. */ sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_COOKIE_ACK, SCTP_SO_NOT_LOCKED); } if (how_indx < sizeof(asoc->cookie_how)) asoc->cookie_how[how_indx] = 11; return (stcb); } if ((ntohl(initack_cp->init.initiate_tag) != asoc->my_vtag && ntohl(init_cp->init.initiate_tag) != asoc->peer_vtag) && cookie->tie_tag_my_vtag == asoc->my_vtag_nonce && cookie->tie_tag_peer_vtag == asoc->peer_vtag_nonce && cookie->tie_tag_peer_vtag != 0) { struct sctpasochead *head; #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) struct socket *so; #endif if (asoc->peer_supports_nat) { /* * This is a gross gross hack. Just call the * cookie_new code since we are allowing a duplicate * association. I hope this works... */ return (sctp_process_cookie_new(m, iphlen, offset, src, dst, sh, cookie, cookie_len, inp, netp, init_src, notification, auth_skipped, auth_offset, auth_len, mflowtype, mflowid, vrf_id, port)); } /* * case A in Section 5.2.4 Table 2: XXMM (peer restarted) */ /* temp code */ if (how_indx < sizeof(asoc->cookie_how)) asoc->cookie_how[how_indx] = 12; sctp_timer_stop(SCTP_TIMER_TYPE_INIT, inp, stcb, net, SCTP_FROM_SCTP_INPUT + SCTP_LOC_16); sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net, SCTP_FROM_SCTP_INPUT + SCTP_LOC_17); /* notify upper layer */ *notification = SCTP_NOTIFY_ASSOC_RESTART; atomic_add_int(&stcb->asoc.refcnt, 1); if ((SCTP_GET_STATE(asoc) != SCTP_STATE_OPEN) && (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_RECEIVED) && (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT)) { SCTP_STAT_INCR_GAUGE32(sctps_currestab); } if (SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) { SCTP_STAT_INCR_GAUGE32(sctps_restartestab); } else if (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) { SCTP_STAT_INCR_GAUGE32(sctps_collisionestab); } if (asoc->state & SCTP_STATE_SHUTDOWN_PENDING) { SCTP_SET_STATE(asoc, SCTP_STATE_OPEN); sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb, asoc->primary_destination); } else if (!(asoc->state & SCTP_STATE_SHUTDOWN_SENT)) { /* move to OPEN state, if not in SHUTDOWN_SENT */ SCTP_SET_STATE(asoc, SCTP_STATE_OPEN); } asoc->pre_open_streams = ntohs(initack_cp->init.num_outbound_streams); asoc->init_seq_number = ntohl(initack_cp->init.initial_tsn); asoc->sending_seq = asoc->asconf_seq_out = asoc->str_reset_seq_out = asoc->init_seq_number; asoc->asconf_seq_out_acked = asoc->asconf_seq_out - 1; asoc->asconf_seq_in = asoc->last_acked_seq = asoc->init_seq_number - 1; asoc->str_reset_seq_in = asoc->init_seq_number; asoc->advanced_peer_ack_point = asoc->last_acked_seq; if (asoc->mapping_array) { memset(asoc->mapping_array, 0, asoc->mapping_array_size); } if (asoc->nr_mapping_array) { memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size); } SCTP_TCB_UNLOCK(stcb); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) so = SCTP_INP_SO(stcb->sctp_ep); SCTP_SOCKET_LOCK(so, 1); #endif SCTP_INP_INFO_WLOCK(); SCTP_INP_WLOCK(stcb->sctp_ep); SCTP_TCB_LOCK(stcb); atomic_add_int(&stcb->asoc.refcnt, -1); /* send up all the data */ SCTP_TCB_SEND_LOCK(stcb); sctp_report_all_outbound(stcb, 0, 1, SCTP_SO_LOCKED); for (i = 0; i < stcb->asoc.streamoutcnt; i++) { stcb->asoc.strmout[i].chunks_on_queues = 0; #if defined(SCTP_DETAILED_STR_STATS) for (j = 0; j < SCTP_PR_SCTP_MAX + 1; j++) { asoc->strmout[i].abandoned_sent[j] = 0; asoc->strmout[i].abandoned_unsent[j] = 0; } #else asoc->strmout[i].abandoned_sent[0] = 0; asoc->strmout[i].abandoned_unsent[0] = 0; #endif stcb->asoc.strmout[i].stream_no = i; stcb->asoc.strmout[i].next_sequence_send = 0; stcb->asoc.strmout[i].last_msg_incomplete = 0; } /* process the INIT-ACK info (my info) */ asoc->my_vtag = ntohl(initack_cp->init.initiate_tag); asoc->my_rwnd = ntohl(initack_cp->init.a_rwnd); /* pull from vtag hash */ LIST_REMOVE(stcb, sctp_asocs); /* re-insert to new vtag position */ head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))]; /* * put it in the bucket in the vtag hash of assoc's for the * system */ LIST_INSERT_HEAD(head, stcb, sctp_asocs); SCTP_TCB_SEND_UNLOCK(stcb); SCTP_INP_WUNLOCK(stcb->sctp_ep); SCTP_INP_INFO_WUNLOCK(); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif asoc->total_flight = 0; asoc->total_flight_count = 0; /* process the INIT info (peer's info) */ retval = sctp_process_init(init_cp, stcb); if (retval < 0) { if (how_indx < sizeof(asoc->cookie_how)) asoc->cookie_how[how_indx] = 13; return (NULL); } /* * since we did not send a HB make sure we don't double * things */ net->hb_responded = 1; if (sctp_load_addresses_from_init(stcb, m, init_offset + sizeof(struct sctp_init_chunk), initack_offset, src, dst, init_src)) { if (how_indx < sizeof(asoc->cookie_how)) asoc->cookie_how[how_indx] = 14; return (NULL); } /* respond with a COOKIE-ACK */ sctp_stop_all_cookie_timers(stcb); sctp_toss_old_cookies(stcb, asoc); sctp_send_cookie_ack(stcb); if (how_indx < sizeof(asoc->cookie_how)) asoc->cookie_how[how_indx] = 15; return (stcb); } if (how_indx < sizeof(asoc->cookie_how)) asoc->cookie_how[how_indx] = 16; /* all other cases... */ return (NULL); } /* * handle a state cookie for a new association m: input packet mbuf chain-- * assumes a pullup on IP/SCTP/COOKIE-ECHO chunk note: this is a "split" mbuf * and the cookie signature does not exist offset: offset into mbuf to the * cookie-echo chunk length: length of the cookie chunk to: where the init * was from returns a new TCB */ static struct sctp_tcb * sctp_process_cookie_new(struct mbuf *m, int iphlen, int offset, struct sockaddr *src, struct sockaddr *dst, struct sctphdr *sh, struct sctp_state_cookie *cookie, int cookie_len, struct sctp_inpcb *inp, struct sctp_nets **netp, struct sockaddr *init_src, int *notification, int auth_skipped, uint32_t auth_offset, uint32_t auth_len, uint8_t mflowtype, uint32_t mflowid, uint32_t vrf_id, uint16_t port) { struct sctp_tcb *stcb; struct sctp_init_chunk *init_cp, init_buf; struct sctp_init_ack_chunk *initack_cp, initack_buf; union sctp_sockstore store; struct sctp_association *asoc; int init_offset, initack_offset, initack_limit; int retval; int error = 0; uint8_t auth_chunk_buf[SCTP_PARAM_BUFFER_SIZE]; #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) struct socket *so; so = SCTP_INP_SO(inp); #endif /* * find and validate the INIT chunk in the cookie (peer's info) the * INIT should start after the cookie-echo header struct (chunk * header, state cookie header struct) */ init_offset = offset + sizeof(struct sctp_cookie_echo_chunk); init_cp = (struct sctp_init_chunk *) sctp_m_getptr(m, init_offset, sizeof(struct sctp_init_chunk), (uint8_t *) & init_buf); if (init_cp == NULL) { /* could not pull a INIT chunk in cookie */ SCTPDBG(SCTP_DEBUG_INPUT1, "process_cookie_new: could not pull INIT chunk hdr\n"); return (NULL); } if (init_cp->ch.chunk_type != SCTP_INITIATION) { SCTPDBG(SCTP_DEBUG_INPUT1, "HUH? process_cookie_new: could not find INIT chunk!\n"); return (NULL); } initack_offset = init_offset + SCTP_SIZE32(ntohs(init_cp->ch.chunk_length)); /* * find and validate the INIT-ACK chunk in the cookie (my info) the * INIT-ACK follows the INIT chunk */ initack_cp = (struct sctp_init_ack_chunk *) sctp_m_getptr(m, initack_offset, sizeof(struct sctp_init_ack_chunk), (uint8_t *) & initack_buf); if (initack_cp == NULL) { /* could not pull INIT-ACK chunk in cookie */ SCTPDBG(SCTP_DEBUG_INPUT1, "process_cookie_new: could not pull INIT-ACK chunk hdr\n"); return (NULL); } if (initack_cp->ch.chunk_type != SCTP_INITIATION_ACK) { return (NULL); } /* * NOTE: We can't use the INIT_ACK's chk_length to determine the * "initack_limit" value. This is because the chk_length field * includes the length of the cookie, but the cookie is omitted when * the INIT and INIT_ACK are tacked onto the cookie... */ initack_limit = offset + cookie_len; /* * now that we know the INIT/INIT-ACK are in place, create a new TCB * and popluate */ /* * Here we do a trick, we set in NULL for the proc/thread argument. * We do this since in effect we only use the p argument when the * socket is unbound and we must do an implicit bind. Since we are * getting a cookie, we cannot be unbound. */ stcb = sctp_aloc_assoc(inp, init_src, &error, ntohl(initack_cp->init.initiate_tag), vrf_id, ntohs(initack_cp->init.num_outbound_streams), (struct thread *)NULL ); if (stcb == NULL) { struct mbuf *op_err; /* memory problem? */ SCTPDBG(SCTP_DEBUG_INPUT1, "process_cookie_new: no room for another TCB!\n"); op_err = sctp_generate_cause(SCTP_CAUSE_OUT_OF_RESC, ""); sctp_abort_association(inp, (struct sctp_tcb *)NULL, m, iphlen, src, dst, sh, op_err, mflowtype, mflowid, vrf_id, port); return (NULL); } /* get the correct sctp_nets */ if (netp) *netp = sctp_findnet(stcb, init_src); asoc = &stcb->asoc; /* get scope variables out of cookie */ asoc->scope.ipv4_local_scope = cookie->ipv4_scope; asoc->scope.site_scope = cookie->site_scope; asoc->scope.local_scope = cookie->local_scope; asoc->scope.loopback_scope = cookie->loopback_scope; if ((asoc->scope.ipv4_addr_legal != cookie->ipv4_addr_legal) || (asoc->scope.ipv6_addr_legal != cookie->ipv6_addr_legal)) { struct mbuf *op_err; /* * Houston we have a problem. The EP changed while the * cookie was in flight. Only recourse is to abort the * association. */ atomic_add_int(&stcb->asoc.refcnt, 1); op_err = sctp_generate_cause(SCTP_CAUSE_OUT_OF_RESC, ""); sctp_abort_association(inp, (struct sctp_tcb *)NULL, m, iphlen, src, dst, sh, op_err, mflowtype, mflowid, vrf_id, port); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); #endif (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_INPUT + SCTP_LOC_18); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif atomic_subtract_int(&stcb->asoc.refcnt, 1); return (NULL); } /* process the INIT-ACK info (my info) */ asoc->my_vtag = ntohl(initack_cp->init.initiate_tag); asoc->my_rwnd = ntohl(initack_cp->init.a_rwnd); asoc->pre_open_streams = ntohs(initack_cp->init.num_outbound_streams); asoc->init_seq_number = ntohl(initack_cp->init.initial_tsn); asoc->sending_seq = asoc->asconf_seq_out = asoc->str_reset_seq_out = asoc->init_seq_number; asoc->asconf_seq_out_acked = asoc->asconf_seq_out - 1; asoc->asconf_seq_in = asoc->last_acked_seq = asoc->init_seq_number - 1; asoc->str_reset_seq_in = asoc->init_seq_number; asoc->advanced_peer_ack_point = asoc->last_acked_seq; /* process the INIT info (peer's info) */ if (netp) retval = sctp_process_init(init_cp, stcb); else retval = 0; if (retval < 0) { atomic_add_int(&stcb->asoc.refcnt, 1); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); #endif (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_INPUT + SCTP_LOC_19); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif atomic_subtract_int(&stcb->asoc.refcnt, 1); return (NULL); } /* load all addresses */ if (sctp_load_addresses_from_init(stcb, m, init_offset + sizeof(struct sctp_init_chunk), initack_offset, src, dst, init_src)) { atomic_add_int(&stcb->asoc.refcnt, 1); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); #endif (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_INPUT + SCTP_LOC_20); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif atomic_subtract_int(&stcb->asoc.refcnt, 1); return (NULL); } /* * verify any preceding AUTH chunk that was skipped */ /* pull the local authentication parameters from the cookie/init-ack */ sctp_auth_get_cookie_params(stcb, m, initack_offset + sizeof(struct sctp_init_ack_chunk), initack_limit - (initack_offset + sizeof(struct sctp_init_ack_chunk))); if (auth_skipped) { struct sctp_auth_chunk *auth; auth = (struct sctp_auth_chunk *) sctp_m_getptr(m, auth_offset, auth_len, auth_chunk_buf); if ((auth == NULL) || sctp_handle_auth(stcb, auth, m, auth_offset)) { /* auth HMAC failed, dump the assoc and packet */ SCTPDBG(SCTP_DEBUG_AUTH1, "COOKIE-ECHO: AUTH failed\n"); atomic_add_int(&stcb->asoc.refcnt, 1); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); #endif (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_INPUT + SCTP_LOC_21); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif atomic_subtract_int(&stcb->asoc.refcnt, 1); return (NULL); } else { /* remaining chunks checked... good to go */ stcb->asoc.authenticated = 1; } } /* update current state */ SCTPDBG(SCTP_DEBUG_INPUT2, "moving to OPEN state\n"); SCTP_SET_STATE(asoc, SCTP_STATE_OPEN); if (asoc->state & SCTP_STATE_SHUTDOWN_PENDING) { sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb, asoc->primary_destination); } sctp_stop_all_cookie_timers(stcb); SCTP_STAT_INCR_COUNTER32(sctps_passiveestab); SCTP_STAT_INCR_GAUGE32(sctps_currestab); /* * if we're doing ASCONFs, check to see if we have any new local * addresses that need to get added to the peer (eg. addresses * changed while cookie echo in flight). This needs to be done * after we go to the OPEN state to do the correct asconf * processing. else, make sure we have the correct addresses in our * lists */ /* warning, we re-use sin, sin6, sa_store here! */ /* pull in local_address (our "from" address) */ switch (cookie->laddr_type) { #ifdef INET case SCTP_IPV4_ADDRESS: /* source addr is IPv4 */ memset(&store.sin, 0, sizeof(struct sockaddr_in)); store.sin.sin_family = AF_INET; store.sin.sin_len = sizeof(struct sockaddr_in); store.sin.sin_addr.s_addr = cookie->laddress[0]; break; #endif #ifdef INET6 case SCTP_IPV6_ADDRESS: /* source addr is IPv6 */ memset(&store.sin6, 0, sizeof(struct sockaddr_in6)); store.sin6.sin6_family = AF_INET6; store.sin6.sin6_len = sizeof(struct sockaddr_in6); store.sin6.sin6_scope_id = cookie->scope_id; memcpy(&store.sin6.sin6_addr, cookie->laddress, sizeof(struct in6_addr)); break; #endif default: atomic_add_int(&stcb->asoc.refcnt, 1); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); #endif (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_INPUT + SCTP_LOC_22); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif atomic_subtract_int(&stcb->asoc.refcnt, 1); return (NULL); } /* set up to notify upper layer */ *notification = SCTP_NOTIFY_ASSOC_UP; if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) && (inp->sctp_socket->so_qlimit == 0)) { /* * This is an endpoint that called connect() how it got a * cookie that is NEW is a bit of a mystery. It must be that * the INIT was sent, but before it got there.. a complete * INIT/INIT-ACK/COOKIE arrived. But of course then it * should have went to the other code.. not here.. oh well.. * a bit of protection is worth having.. */ stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) { SCTP_SOCKET_UNLOCK(so, 1); return (NULL); } #endif soisconnected(stcb->sctp_socket); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif } else if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && (inp->sctp_socket->so_qlimit)) { /* * We don't want to do anything with this one. Since it is * the listening guy. The timer will get started for * accepted connections in the caller. */ ; } /* since we did not send a HB make sure we don't double things */ if ((netp) && (*netp)) (*netp)->hb_responded = 1; if (stcb->asoc.sctp_autoclose_ticks && sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTOCLOSE)) { sctp_timer_start(SCTP_TIMER_TYPE_AUTOCLOSE, inp, stcb, NULL); } (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); if ((netp != NULL) && (*netp != NULL)) { /* calculate the RTT and set the encaps port */ (*netp)->RTO = sctp_calculate_rto(stcb, asoc, *netp, &cookie->time_entered, sctp_align_unsafe_makecopy, SCTP_RTT_FROM_NON_DATA); #if defined(INET) || defined(INET6) if (((*netp)->port == 0) && (port != 0)) { sctp_pathmtu_adjustment(stcb, (uint16_t) ((*netp)->mtu - sizeof(struct udphdr))); } (*netp)->port = port; #endif } /* respond with a COOKIE-ACK */ sctp_send_cookie_ack(stcb); /* * check the address lists for any ASCONFs that need to be sent * AFTER the cookie-ack is sent */ sctp_check_address_list(stcb, m, initack_offset + sizeof(struct sctp_init_ack_chunk), initack_limit - (initack_offset + sizeof(struct sctp_init_ack_chunk)), &store.sa, cookie->local_scope, cookie->site_scope, cookie->ipv4_scope, cookie->loopback_scope); return (stcb); } /* * CODE LIKE THIS NEEDS TO RUN IF the peer supports the NAT extension, i.e * we NEED to make sure we are not already using the vtag. If so we * need to send back an ABORT-TRY-AGAIN-WITH-NEW-TAG No middle box bit! head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(tag, SCTP_BASE_INFO(hashasocmark))]; LIST_FOREACH(stcb, head, sctp_asocs) { if ((stcb->asoc.my_vtag == tag) && (stcb->rport == rport) && (inp == stcb->sctp_ep)) { -- SEND ABORT - TRY AGAIN -- } } */ /* * handles a COOKIE-ECHO message stcb: modified to either a new or left as * existing (non-NULL) TCB */ static struct mbuf * sctp_handle_cookie_echo(struct mbuf *m, int iphlen, int offset, struct sockaddr *src, struct sockaddr *dst, struct sctphdr *sh, struct sctp_cookie_echo_chunk *cp, struct sctp_inpcb **inp_p, struct sctp_tcb **stcb, struct sctp_nets **netp, int auth_skipped, uint32_t auth_offset, uint32_t auth_len, struct sctp_tcb **locked_tcb, uint8_t mflowtype, uint32_t mflowid, uint32_t vrf_id, uint16_t port) { struct sctp_state_cookie *cookie; struct sctp_tcb *l_stcb = *stcb; struct sctp_inpcb *l_inp; struct sockaddr *to; struct sctp_pcb *ep; struct mbuf *m_sig; uint8_t calc_sig[SCTP_SIGNATURE_SIZE], tmp_sig[SCTP_SIGNATURE_SIZE]; uint8_t *sig; uint8_t cookie_ok = 0; unsigned int sig_offset, cookie_offset; unsigned int cookie_len; struct timeval now; struct timeval time_expires; int notification = 0; struct sctp_nets *netl; int had_a_existing_tcb = 0; int send_int_conf = 0; #ifdef INET struct sockaddr_in sin; #endif #ifdef INET6 struct sockaddr_in6 sin6; #endif SCTPDBG(SCTP_DEBUG_INPUT2, "sctp_handle_cookie: handling COOKIE-ECHO\n"); if (inp_p == NULL) { return (NULL); } cookie = &cp->cookie; cookie_offset = offset + sizeof(struct sctp_chunkhdr); cookie_len = ntohs(cp->ch.chunk_length); if ((cookie->peerport != sh->src_port) || (cookie->myport != sh->dest_port) || (cookie->my_vtag != sh->v_tag)) { /* * invalid ports or bad tag. Note that we always leave the * v_tag in the header in network order and when we stored * it in the my_vtag slot we also left it in network order. * This maintains the match even though it may be in the * opposite byte order of the machine :-> */ return (NULL); } if (cookie_len < sizeof(struct sctp_cookie_echo_chunk) + sizeof(struct sctp_init_chunk) + sizeof(struct sctp_init_ack_chunk) + SCTP_SIGNATURE_SIZE) { /* cookie too small */ return (NULL); } /* * split off the signature into its own mbuf (since it should not be * calculated in the sctp_hmac_m() call). */ sig_offset = offset + cookie_len - SCTP_SIGNATURE_SIZE; m_sig = m_split(m, sig_offset, M_NOWAIT); if (m_sig == NULL) { /* out of memory or ?? */ return (NULL); } #ifdef SCTP_MBUF_LOGGING if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) { sctp_log_mbc(m_sig, SCTP_MBUF_SPLIT); } #endif /* * compute the signature/digest for the cookie */ ep = &(*inp_p)->sctp_ep; l_inp = *inp_p; if (l_stcb) { SCTP_TCB_UNLOCK(l_stcb); } SCTP_INP_RLOCK(l_inp); if (l_stcb) { SCTP_TCB_LOCK(l_stcb); } /* which cookie is it? */ if ((cookie->time_entered.tv_sec < (long)ep->time_of_secret_change) && (ep->current_secret_number != ep->last_secret_number)) { /* it's the old cookie */ (void)sctp_hmac_m(SCTP_HMAC, (uint8_t *) ep->secret_key[(int)ep->last_secret_number], SCTP_SECRET_SIZE, m, cookie_offset, calc_sig, 0); } else { /* it's the current cookie */ (void)sctp_hmac_m(SCTP_HMAC, (uint8_t *) ep->secret_key[(int)ep->current_secret_number], SCTP_SECRET_SIZE, m, cookie_offset, calc_sig, 0); } /* get the signature */ SCTP_INP_RUNLOCK(l_inp); sig = (uint8_t *) sctp_m_getptr(m_sig, 0, SCTP_SIGNATURE_SIZE, (uint8_t *) & tmp_sig); if (sig == NULL) { /* couldn't find signature */ sctp_m_freem(m_sig); return (NULL); } /* compare the received digest with the computed digest */ if (memcmp(calc_sig, sig, SCTP_SIGNATURE_SIZE) != 0) { /* try the old cookie? */ if ((cookie->time_entered.tv_sec == (long)ep->time_of_secret_change) && (ep->current_secret_number != ep->last_secret_number)) { /* compute digest with old */ (void)sctp_hmac_m(SCTP_HMAC, (uint8_t *) ep->secret_key[(int)ep->last_secret_number], SCTP_SECRET_SIZE, m, cookie_offset, calc_sig, 0); /* compare */ if (memcmp(calc_sig, sig, SCTP_SIGNATURE_SIZE) == 0) cookie_ok = 1; } } else { cookie_ok = 1; } /* * Now before we continue we must reconstruct our mbuf so that * normal processing of any other chunks will work. */ { struct mbuf *m_at; m_at = m; while (SCTP_BUF_NEXT(m_at) != NULL) { m_at = SCTP_BUF_NEXT(m_at); } SCTP_BUF_NEXT(m_at) = m_sig; } if (cookie_ok == 0) { SCTPDBG(SCTP_DEBUG_INPUT2, "handle_cookie_echo: cookie signature validation failed!\n"); SCTPDBG(SCTP_DEBUG_INPUT2, "offset = %u, cookie_offset = %u, sig_offset = %u\n", (uint32_t) offset, cookie_offset, sig_offset); return (NULL); } /* * check the cookie timestamps to be sure it's not stale */ (void)SCTP_GETTIME_TIMEVAL(&now); /* Expire time is in Ticks, so we convert to seconds */ time_expires.tv_sec = cookie->time_entered.tv_sec + TICKS_TO_SEC(cookie->cookie_life); time_expires.tv_usec = cookie->time_entered.tv_usec; /* * TODO sctp_constants.h needs alternative time macros when _KERNEL * is undefined. */ if (timevalcmp(&now, &time_expires, >)) { /* cookie is stale! */ struct mbuf *op_err; struct sctp_error_stale_cookie *cause; uint32_t tim; op_err = sctp_get_mbuf_for_msg(sizeof(struct sctp_error_stale_cookie), 0, M_NOWAIT, 1, MT_DATA); if (op_err == NULL) { /* FOOBAR */ return (NULL); } /* Set the len */ SCTP_BUF_LEN(op_err) = sizeof(struct sctp_error_stale_cookie); cause = mtod(op_err, struct sctp_error_stale_cookie *); cause->cause.code = htons(SCTP_CAUSE_STALE_COOKIE); cause->cause.length = htons((sizeof(struct sctp_paramhdr) + (sizeof(uint32_t)))); /* seconds to usec */ tim = (now.tv_sec - time_expires.tv_sec) * 1000000; /* add in usec */ if (tim == 0) tim = now.tv_usec - cookie->time_entered.tv_usec; cause->stale_time = htonl(tim); sctp_send_operr_to(src, dst, sh, cookie->peers_vtag, op_err, mflowtype, mflowid, l_inp->fibnum, vrf_id, port); return (NULL); } /* * Now we must see with the lookup address if we have an existing * asoc. This will only happen if we were in the COOKIE-WAIT state * and a INIT collided with us and somewhere the peer sent the * cookie on another address besides the single address our assoc * had for him. In this case we will have one of the tie-tags set at * least AND the address field in the cookie can be used to look it * up. */ to = NULL; switch (cookie->addr_type) { #ifdef INET6 case SCTP_IPV6_ADDRESS: memset(&sin6, 0, sizeof(sin6)); sin6.sin6_family = AF_INET6; sin6.sin6_len = sizeof(sin6); sin6.sin6_port = sh->src_port; sin6.sin6_scope_id = cookie->scope_id; memcpy(&sin6.sin6_addr.s6_addr, cookie->address, sizeof(sin6.sin6_addr.s6_addr)); to = (struct sockaddr *)&sin6; break; #endif #ifdef INET case SCTP_IPV4_ADDRESS: memset(&sin, 0, sizeof(sin)); sin.sin_family = AF_INET; sin.sin_len = sizeof(sin); sin.sin_port = sh->src_port; sin.sin_addr.s_addr = cookie->address[0]; to = (struct sockaddr *)&sin; break; #endif default: /* This should not happen */ return (NULL); } if (*stcb == NULL) { /* Yep, lets check */ *stcb = sctp_findassociation_ep_addr(inp_p, to, netp, dst, NULL); if (*stcb == NULL) { /* * We should have only got back the same inp. If we * got back a different ep we have a problem. The * original findep got back l_inp and now */ if (l_inp != *inp_p) { SCTP_PRINTF("Bad problem find_ep got a diff inp then special_locate?\n"); } } else { if (*locked_tcb == NULL) { /* * In this case we found the assoc only * after we locked the create lock. This * means we are in a colliding case and we * must make sure that we unlock the tcb if * its one of the cases where we throw away * the incoming packets. */ *locked_tcb = *stcb; /* * We must also increment the inp ref count * since the ref_count flags was set when we * did not find the TCB, now we found it * which reduces the refcount.. we must * raise it back out to balance it all :-) */ SCTP_INP_INCR_REF((*stcb)->sctp_ep); if ((*stcb)->sctp_ep != l_inp) { SCTP_PRINTF("Huh? ep:%p diff then l_inp:%p?\n", (void *)(*stcb)->sctp_ep, (void *)l_inp); } } } } cookie_len -= SCTP_SIGNATURE_SIZE; if (*stcb == NULL) { /* this is the "normal" case... get a new TCB */ *stcb = sctp_process_cookie_new(m, iphlen, offset, src, dst, sh, cookie, cookie_len, *inp_p, netp, to, ¬ification, auth_skipped, auth_offset, auth_len, mflowtype, mflowid, vrf_id, port); } else { /* this is abnormal... cookie-echo on existing TCB */ had_a_existing_tcb = 1; *stcb = sctp_process_cookie_existing(m, iphlen, offset, src, dst, sh, cookie, cookie_len, *inp_p, *stcb, netp, to, ¬ification, auth_skipped, auth_offset, auth_len, mflowtype, mflowid, vrf_id, port); } if (*stcb == NULL) { /* still no TCB... must be bad cookie-echo */ return (NULL); } if (*netp != NULL) { (*netp)->flowtype = mflowtype; (*netp)->flowid = mflowid; } /* * Ok, we built an association so confirm the address we sent the * INIT-ACK to. */ netl = sctp_findnet(*stcb, to); /* * This code should in theory NOT run but */ if (netl == NULL) { /* TSNH! Huh, why do I need to add this address here? */ if (sctp_add_remote_addr(*stcb, to, NULL, SCTP_DONOT_SETSCOPE, SCTP_IN_COOKIE_PROC)) { return (NULL); } netl = sctp_findnet(*stcb, to); } if (netl) { if (netl->dest_state & SCTP_ADDR_UNCONFIRMED) { netl->dest_state &= ~SCTP_ADDR_UNCONFIRMED; (void)sctp_set_primary_addr((*stcb), (struct sockaddr *)NULL, netl); send_int_conf = 1; } } sctp_start_net_timers(*stcb); if ((*inp_p)->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { if (!had_a_existing_tcb || (((*inp_p)->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) { /* * If we have a NEW cookie or the connect never * reached the connected state during collision we * must do the TCP accept thing. */ struct socket *so, *oso; struct sctp_inpcb *inp; if (notification == SCTP_NOTIFY_ASSOC_RESTART) { /* * For a restart we will keep the same * socket, no need to do anything. I THINK!! */ sctp_ulp_notify(notification, *stcb, 0, NULL, SCTP_SO_NOT_LOCKED); if (send_int_conf) { sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_CONFIRMED, (*stcb), 0, (void *)netl, SCTP_SO_NOT_LOCKED); } return (m); } oso = (*inp_p)->sctp_socket; atomic_add_int(&(*stcb)->asoc.refcnt, 1); SCTP_TCB_UNLOCK((*stcb)); CURVNET_SET(oso->so_vnet); so = sonewconn(oso, 0 ); CURVNET_RESTORE(); SCTP_TCB_LOCK((*stcb)); atomic_subtract_int(&(*stcb)->asoc.refcnt, 1); if (so == NULL) { struct mbuf *op_err; #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) struct socket *pcb_so; #endif /* Too many sockets */ SCTPDBG(SCTP_DEBUG_INPUT1, "process_cookie_new: no room for another socket!\n"); op_err = sctp_generate_cause(SCTP_CAUSE_OUT_OF_RESC, ""); sctp_abort_association(*inp_p, NULL, m, iphlen, src, dst, sh, op_err, mflowtype, mflowid, vrf_id, port); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) pcb_so = SCTP_INP_SO(*inp_p); atomic_add_int(&(*stcb)->asoc.refcnt, 1); SCTP_TCB_UNLOCK((*stcb)); SCTP_SOCKET_LOCK(pcb_so, 1); SCTP_TCB_LOCK((*stcb)); atomic_subtract_int(&(*stcb)->asoc.refcnt, 1); #endif (void)sctp_free_assoc(*inp_p, *stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_INPUT + SCTP_LOC_23); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(pcb_so, 1); #endif return (NULL); } inp = (struct sctp_inpcb *)so->so_pcb; SCTP_INP_INCR_REF(inp); /* * We add the unbound flag here so that if we get an * soabort() before we get the move_pcb done, we * will properly cleanup. */ inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE | SCTP_PCB_FLAGS_CONNECTED | SCTP_PCB_FLAGS_IN_TCPPOOL | SCTP_PCB_FLAGS_UNBOUND | (SCTP_PCB_COPY_FLAGS & (*inp_p)->sctp_flags) | SCTP_PCB_FLAGS_DONT_WAKE); inp->sctp_features = (*inp_p)->sctp_features; inp->sctp_mobility_features = (*inp_p)->sctp_mobility_features; inp->sctp_socket = so; inp->sctp_frag_point = (*inp_p)->sctp_frag_point; inp->max_cwnd = (*inp_p)->max_cwnd; inp->sctp_cmt_on_off = (*inp_p)->sctp_cmt_on_off; inp->ecn_supported = (*inp_p)->ecn_supported; inp->prsctp_supported = (*inp_p)->prsctp_supported; inp->auth_supported = (*inp_p)->auth_supported; inp->asconf_supported = (*inp_p)->asconf_supported; inp->reconfig_supported = (*inp_p)->reconfig_supported; inp->nrsack_supported = (*inp_p)->nrsack_supported; inp->pktdrop_supported = (*inp_p)->pktdrop_supported; inp->partial_delivery_point = (*inp_p)->partial_delivery_point; inp->sctp_context = (*inp_p)->sctp_context; inp->local_strreset_support = (*inp_p)->local_strreset_support; inp->fibnum = (*inp_p)->fibnum; inp->inp_starting_point_for_iterator = NULL; /* * copy in the authentication parameters from the * original endpoint */ if (inp->sctp_ep.local_hmacs) sctp_free_hmaclist(inp->sctp_ep.local_hmacs); inp->sctp_ep.local_hmacs = sctp_copy_hmaclist((*inp_p)->sctp_ep.local_hmacs); if (inp->sctp_ep.local_auth_chunks) sctp_free_chunklist(inp->sctp_ep.local_auth_chunks); inp->sctp_ep.local_auth_chunks = sctp_copy_chunklist((*inp_p)->sctp_ep.local_auth_chunks); /* * Now we must move it from one hash table to * another and get the tcb in the right place. */ /* * This is where the one-2-one socket is put into * the accept state waiting for the accept! */ if (*stcb) { (*stcb)->asoc.state |= SCTP_STATE_IN_ACCEPT_QUEUE; } sctp_move_pcb_and_assoc(*inp_p, inp, *stcb); atomic_add_int(&(*stcb)->asoc.refcnt, 1); SCTP_TCB_UNLOCK((*stcb)); sctp_pull_off_control_to_new_inp((*inp_p), inp, *stcb, 0); SCTP_TCB_LOCK((*stcb)); atomic_subtract_int(&(*stcb)->asoc.refcnt, 1); /* * now we must check to see if we were aborted while * the move was going on and the lock/unlock * happened. */ if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { /* * yep it was, we leave the assoc attached * to the socket since the sctp_inpcb_free() * call will send an abort for us. */ SCTP_INP_DECR_REF(inp); return (NULL); } SCTP_INP_DECR_REF(inp); /* Switch over to the new guy */ *inp_p = inp; sctp_ulp_notify(notification, *stcb, 0, NULL, SCTP_SO_NOT_LOCKED); if (send_int_conf) { sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_CONFIRMED, (*stcb), 0, (void *)netl, SCTP_SO_NOT_LOCKED); } /* * Pull it from the incomplete queue and wake the * guy */ #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) atomic_add_int(&(*stcb)->asoc.refcnt, 1); SCTP_TCB_UNLOCK((*stcb)); SCTP_SOCKET_LOCK(so, 1); #endif soisconnected(so); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_TCB_LOCK((*stcb)); atomic_subtract_int(&(*stcb)->asoc.refcnt, 1); SCTP_SOCKET_UNLOCK(so, 1); #endif return (m); } } if (notification) { sctp_ulp_notify(notification, *stcb, 0, NULL, SCTP_SO_NOT_LOCKED); } if (send_int_conf) { sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_CONFIRMED, (*stcb), 0, (void *)netl, SCTP_SO_NOT_LOCKED); } return (m); } static void sctp_handle_cookie_ack(struct sctp_cookie_ack_chunk *cp SCTP_UNUSED, struct sctp_tcb *stcb, struct sctp_nets *net) { /* cp must not be used, others call this without a c-ack :-) */ struct sctp_association *asoc; SCTPDBG(SCTP_DEBUG_INPUT2, "sctp_handle_cookie_ack: handling COOKIE-ACK\n"); if ((stcb == NULL) || (net == NULL)) { return; } asoc = &stcb->asoc; sctp_stop_all_cookie_timers(stcb); /* process according to association state */ if (SCTP_GET_STATE(asoc) == SCTP_STATE_COOKIE_ECHOED) { /* state change only needed when I am in right state */ SCTPDBG(SCTP_DEBUG_INPUT2, "moving to OPEN state\n"); SCTP_SET_STATE(asoc, SCTP_STATE_OPEN); sctp_start_net_timers(stcb); if (asoc->state & SCTP_STATE_SHUTDOWN_PENDING) { sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb, asoc->primary_destination); } /* update RTO */ SCTP_STAT_INCR_COUNTER32(sctps_activeestab); SCTP_STAT_INCR_GAUGE32(sctps_currestab); if (asoc->overall_error_count == 0) { net->RTO = sctp_calculate_rto(stcb, asoc, net, &asoc->time_entered, sctp_align_safe_nocopy, SCTP_RTT_FROM_NON_DATA); } (void)SCTP_GETTIME_TIMEVAL(&asoc->time_entered); sctp_ulp_notify(SCTP_NOTIFY_ASSOC_UP, stcb, 0, NULL, SCTP_SO_NOT_LOCKED); if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) struct socket *so; #endif stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) so = SCTP_INP_SO(stcb->sctp_ep); atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); #endif if ((stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) == 0) { soisconnected(stcb->sctp_socket); } #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif } /* * since we did not send a HB make sure we don't double * things */ net->hb_responded = 1; if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) { /* * We don't need to do the asconf thing, nor hb or * autoclose if the socket is closed. */ goto closed_socket; } sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep, stcb, net); if (stcb->asoc.sctp_autoclose_ticks && sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_AUTOCLOSE)) { sctp_timer_start(SCTP_TIMER_TYPE_AUTOCLOSE, stcb->sctp_ep, stcb, NULL); } /* * send ASCONF if parameters are pending and ASCONFs are * allowed (eg. addresses changed when init/cookie echo were * in flight) */ if ((sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_DO_ASCONF)) && (stcb->asoc.asconf_supported == 1) && (!TAILQ_EMPTY(&stcb->asoc.asconf_queue))) { #ifdef SCTP_TIMER_BASED_ASCONF sctp_timer_start(SCTP_TIMER_TYPE_ASCONF, stcb->sctp_ep, stcb, stcb->asoc.primary_destination); #else sctp_send_asconf(stcb, stcb->asoc.primary_destination, SCTP_ADDR_NOT_LOCKED); #endif } } closed_socket: /* Toss the cookie if I can */ sctp_toss_old_cookies(stcb, asoc); if (!TAILQ_EMPTY(&asoc->sent_queue)) { /* Restart the timer if we have pending data */ struct sctp_tmit_chunk *chk; chk = TAILQ_FIRST(&asoc->sent_queue); sctp_timer_start(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, chk->whoTo); } } static void sctp_handle_ecn_echo(struct sctp_ecne_chunk *cp, struct sctp_tcb *stcb) { struct sctp_nets *net; struct sctp_tmit_chunk *lchk; struct sctp_ecne_chunk bkup; uint8_t override_bit; uint32_t tsn, window_data_tsn; int len; unsigned int pkt_cnt; len = ntohs(cp->ch.chunk_length); if ((len != sizeof(struct sctp_ecne_chunk)) && (len != sizeof(struct old_sctp_ecne_chunk))) { return; } if (len == sizeof(struct old_sctp_ecne_chunk)) { /* Its the old format */ memcpy(&bkup, cp, sizeof(struct old_sctp_ecne_chunk)); bkup.num_pkts_since_cwr = htonl(1); cp = &bkup; } SCTP_STAT_INCR(sctps_recvecne); tsn = ntohl(cp->tsn); pkt_cnt = ntohl(cp->num_pkts_since_cwr); lchk = TAILQ_LAST(&stcb->asoc.send_queue, sctpchunk_listhead); if (lchk == NULL) { window_data_tsn = stcb->asoc.sending_seq - 1; } else { window_data_tsn = lchk->rec.data.TSN_seq; } /* Find where it was sent to if possible. */ net = NULL; TAILQ_FOREACH(lchk, &stcb->asoc.sent_queue, sctp_next) { if (lchk->rec.data.TSN_seq == tsn) { net = lchk->whoTo; net->ecn_prev_cwnd = lchk->rec.data.cwnd_at_send; break; } if (SCTP_TSN_GT(lchk->rec.data.TSN_seq, tsn)) { break; } } if (net == NULL) { /* * What to do. A previous send of a CWR was possibly lost. * See how old it is, we may have it marked on the actual * net. */ TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { if (tsn == net->last_cwr_tsn) { /* Found him, send it off */ break; } } if (net == NULL) { /* * If we reach here, we need to send a special CWR * that says hey, we did this a long time ago and * you lost the response. */ net = TAILQ_FIRST(&stcb->asoc.nets); if (net == NULL) { /* TSNH */ return; } override_bit = SCTP_CWR_REDUCE_OVERRIDE; } else { override_bit = 0; } } else { override_bit = 0; } if (SCTP_TSN_GT(tsn, net->cwr_window_tsn) && ((override_bit & SCTP_CWR_REDUCE_OVERRIDE) == 0)) { /* * JRS - Use the congestion control given in the pluggable * CC module */ stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo(stcb, net, 0, pkt_cnt); /* * We reduce once every RTT. So we will only lower cwnd at * the next sending seq i.e. the window_data_tsn */ net->cwr_window_tsn = window_data_tsn; net->ecn_ce_pkt_cnt += pkt_cnt; net->lost_cnt = pkt_cnt; net->last_cwr_tsn = tsn; } else { override_bit |= SCTP_CWR_IN_SAME_WINDOW; if (SCTP_TSN_GT(tsn, net->last_cwr_tsn) && ((override_bit & SCTP_CWR_REDUCE_OVERRIDE) == 0)) { /* * Another loss in the same window update how many * marks/packets lost we have had. */ int cnt = 1; if (pkt_cnt > net->lost_cnt) { /* Should be the case */ cnt = (pkt_cnt - net->lost_cnt); net->ecn_ce_pkt_cnt += cnt; } net->lost_cnt = pkt_cnt; net->last_cwr_tsn = tsn; /* * Most CC functions will ignore this call, since we * are in-window yet of the initial CE the peer saw. */ stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo(stcb, net, 1, cnt); } } /* * We always send a CWR this way if our previous one was lost our * peer will get an update, or if it is not time again to reduce we * still get the cwr to the peer. Note we set the override when we * could not find the TSN on the chunk or the destination network. */ sctp_send_cwr(stcb, net, net->last_cwr_tsn, override_bit); } static void sctp_handle_ecn_cwr(struct sctp_cwr_chunk *cp, struct sctp_tcb *stcb, struct sctp_nets *net) { /* * Here we get a CWR from the peer. We must look in the outqueue and * make sure that we have a covered ECNE in the control chunk part. * If so remove it. */ struct sctp_tmit_chunk *chk; struct sctp_ecne_chunk *ecne; int override; uint32_t cwr_tsn; cwr_tsn = ntohl(cp->tsn); override = cp->ch.chunk_flags & SCTP_CWR_REDUCE_OVERRIDE; TAILQ_FOREACH(chk, &stcb->asoc.control_send_queue, sctp_next) { if (chk->rec.chunk_id.id != SCTP_ECN_ECHO) { continue; } if ((override == 0) && (chk->whoTo != net)) { /* Must be from the right src unless override is set */ continue; } ecne = mtod(chk->data, struct sctp_ecne_chunk *); if (SCTP_TSN_GE(cwr_tsn, ntohl(ecne->tsn))) { /* this covers this ECNE, we can remove it */ stcb->asoc.ecn_echo_cnt_onq--; TAILQ_REMOVE(&stcb->asoc.control_send_queue, chk, sctp_next); sctp_m_freem(chk->data); chk->data = NULL; stcb->asoc.ctrl_queue_cnt--; sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); if (override == 0) { break; } } } } static void sctp_handle_shutdown_complete(struct sctp_shutdown_complete_chunk *cp SCTP_UNUSED, struct sctp_tcb *stcb, struct sctp_nets *net) { struct sctp_association *asoc; #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) struct socket *so; #endif SCTPDBG(SCTP_DEBUG_INPUT2, "sctp_handle_shutdown_complete: handling SHUTDOWN-COMPLETE\n"); if (stcb == NULL) return; asoc = &stcb->asoc; /* process according to association state */ if (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT) { /* unexpected SHUTDOWN-COMPLETE... so ignore... */ SCTPDBG(SCTP_DEBUG_INPUT2, "sctp_handle_shutdown_complete: not in SCTP_STATE_SHUTDOWN_ACK_SENT --- ignore\n"); SCTP_TCB_UNLOCK(stcb); return; } /* notify upper layer protocol */ if (stcb->sctp_socket) { sctp_ulp_notify(SCTP_NOTIFY_ASSOC_DOWN, stcb, 0, NULL, SCTP_SO_NOT_LOCKED); } #ifdef INVARIANTS if (!TAILQ_EMPTY(&asoc->send_queue) || !TAILQ_EMPTY(&asoc->sent_queue) || !stcb->asoc.ss_functions.sctp_ss_is_empty(stcb, asoc)) { panic("Queues are not empty when handling SHUTDOWN-COMPLETE"); } #endif /* stop the timer */ sctp_timer_stop(SCTP_TIMER_TYPE_SHUTDOWNACK, stcb->sctp_ep, stcb, net, SCTP_FROM_SCTP_INPUT + SCTP_LOC_24); SCTP_STAT_INCR_COUNTER32(sctps_shutdown); /* free the TCB */ SCTPDBG(SCTP_DEBUG_INPUT2, "sctp_handle_shutdown_complete: calls free-asoc\n"); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) so = SCTP_INP_SO(stcb->sctp_ep); atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); #endif (void)sctp_free_assoc(stcb->sctp_ep, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_INPUT + SCTP_LOC_25); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif return; } static int process_chunk_drop(struct sctp_tcb *stcb, struct sctp_chunk_desc *desc, struct sctp_nets *net, uint8_t flg) { switch (desc->chunk_type) { case SCTP_DATA: /* find the tsn to resend (possibly */ { uint32_t tsn; struct sctp_tmit_chunk *tp1; tsn = ntohl(desc->tsn_ifany); TAILQ_FOREACH(tp1, &stcb->asoc.sent_queue, sctp_next) { if (tp1->rec.data.TSN_seq == tsn) { /* found it */ break; } if (SCTP_TSN_GT(tp1->rec.data.TSN_seq, tsn)) { /* not found */ tp1 = NULL; break; } } if (tp1 == NULL) { /* * Do it the other way , aka without paying * attention to queue seq order. */ SCTP_STAT_INCR(sctps_pdrpdnfnd); TAILQ_FOREACH(tp1, &stcb->asoc.sent_queue, sctp_next) { if (tp1->rec.data.TSN_seq == tsn) { /* found it */ break; } } } if (tp1 == NULL) { SCTP_STAT_INCR(sctps_pdrptsnnf); } if ((tp1) && (tp1->sent < SCTP_DATAGRAM_ACKED)) { uint8_t *ddp; if (((flg & SCTP_BADCRC) == 0) && ((flg & SCTP_FROM_MIDDLE_BOX) == 0)) { return (0); } if ((stcb->asoc.peers_rwnd == 0) && ((flg & SCTP_FROM_MIDDLE_BOX) == 0)) { SCTP_STAT_INCR(sctps_pdrpdiwnp); return (0); } if (stcb->asoc.peers_rwnd == 0 && (flg & SCTP_FROM_MIDDLE_BOX)) { SCTP_STAT_INCR(sctps_pdrpdizrw); return (0); } ddp = (uint8_t *) (mtod(tp1->data, caddr_t)+ sizeof(struct sctp_data_chunk)); { unsigned int iii; for (iii = 0; iii < sizeof(desc->data_bytes); iii++) { if (ddp[iii] != desc->data_bytes[iii]) { SCTP_STAT_INCR(sctps_pdrpbadd); return (-1); } } } if (tp1->do_rtt) { /* * this guy had a RTO calculation * pending on it, cancel it */ if (tp1->whoTo->rto_needed == 0) { tp1->whoTo->rto_needed = 1; } tp1->do_rtt = 0; } SCTP_STAT_INCR(sctps_pdrpmark); if (tp1->sent != SCTP_DATAGRAM_RESEND) sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt); /* * mark it as if we were doing a FR, since * we will be getting gap ack reports behind * the info from the router. */ tp1->rec.data.doing_fast_retransmit = 1; /* * mark the tsn with what sequences can * cause a new FR. */ if (TAILQ_EMPTY(&stcb->asoc.send_queue)) { tp1->rec.data.fast_retran_tsn = stcb->asoc.sending_seq; } else { tp1->rec.data.fast_retran_tsn = (TAILQ_FIRST(&stcb->asoc.send_queue))->rec.data.TSN_seq; } /* restart the timer */ sctp_timer_stop(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, tp1->whoTo, SCTP_FROM_SCTP_INPUT + SCTP_LOC_26); sctp_timer_start(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, tp1->whoTo); /* fix counts and things */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FLIGHT_LOGGING_ENABLE) { sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_PDRP, tp1->whoTo->flight_size, tp1->book_size, (uint32_t) (uintptr_t) stcb, tp1->rec.data.TSN_seq); } if (tp1->sent < SCTP_DATAGRAM_RESEND) { sctp_flight_size_decrease(tp1); sctp_total_flight_decrease(stcb, tp1); } tp1->sent = SCTP_DATAGRAM_RESEND; } { /* audit code */ unsigned int audit; audit = 0; TAILQ_FOREACH(tp1, &stcb->asoc.sent_queue, sctp_next) { if (tp1->sent == SCTP_DATAGRAM_RESEND) audit++; } TAILQ_FOREACH(tp1, &stcb->asoc.control_send_queue, sctp_next) { if (tp1->sent == SCTP_DATAGRAM_RESEND) audit++; } if (audit != stcb->asoc.sent_queue_retran_cnt) { SCTP_PRINTF("**Local Audit finds cnt:%d asoc cnt:%d\n", audit, stcb->asoc.sent_queue_retran_cnt); #ifndef SCTP_AUDITING_ENABLED stcb->asoc.sent_queue_retran_cnt = audit; #endif } } } break; case SCTP_ASCONF: { struct sctp_tmit_chunk *asconf; TAILQ_FOREACH(asconf, &stcb->asoc.control_send_queue, sctp_next) { if (asconf->rec.chunk_id.id == SCTP_ASCONF) { break; } } if (asconf) { if (asconf->sent != SCTP_DATAGRAM_RESEND) sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt); asconf->sent = SCTP_DATAGRAM_RESEND; asconf->snd_count--; } } break; case SCTP_INITIATION: /* resend the INIT */ stcb->asoc.dropped_special_cnt++; if (stcb->asoc.dropped_special_cnt < SCTP_RETRY_DROPPED_THRESH) { /* * If we can get it in, in a few attempts we do * this, otherwise we let the timer fire. */ sctp_timer_stop(SCTP_TIMER_TYPE_INIT, stcb->sctp_ep, stcb, net, SCTP_FROM_SCTP_INPUT + SCTP_LOC_27); sctp_send_initiate(stcb->sctp_ep, stcb, SCTP_SO_NOT_LOCKED); } break; case SCTP_SELECTIVE_ACK: case SCTP_NR_SELECTIVE_ACK: /* resend the sack */ sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED); break; case SCTP_HEARTBEAT_REQUEST: /* resend a demand HB */ if ((stcb->asoc.overall_error_count + 3) < stcb->asoc.max_send_times) { /* * Only retransmit if we KNOW we wont destroy the * tcb */ sctp_send_hb(stcb, net, SCTP_SO_NOT_LOCKED); } break; case SCTP_SHUTDOWN: sctp_send_shutdown(stcb, net); break; case SCTP_SHUTDOWN_ACK: sctp_send_shutdown_ack(stcb, net); break; case SCTP_COOKIE_ECHO: { struct sctp_tmit_chunk *cookie; cookie = NULL; TAILQ_FOREACH(cookie, &stcb->asoc.control_send_queue, sctp_next) { if (cookie->rec.chunk_id.id == SCTP_COOKIE_ECHO) { break; } } if (cookie) { if (cookie->sent != SCTP_DATAGRAM_RESEND) sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt); cookie->sent = SCTP_DATAGRAM_RESEND; sctp_stop_all_cookie_timers(stcb); } } break; case SCTP_COOKIE_ACK: sctp_send_cookie_ack(stcb); break; case SCTP_ASCONF_ACK: /* resend last asconf ack */ sctp_send_asconf_ack(stcb); break; + case SCTP_IFORWARD_CUM_TSN: case SCTP_FORWARD_CUM_TSN: send_forward_tsn(stcb, &stcb->asoc); break; /* can't do anything with these */ case SCTP_PACKET_DROPPED: case SCTP_INITIATION_ACK: /* this should not happen */ case SCTP_HEARTBEAT_ACK: case SCTP_ABORT_ASSOCIATION: case SCTP_OPERATION_ERROR: case SCTP_SHUTDOWN_COMPLETE: case SCTP_ECN_ECHO: case SCTP_ECN_CWR: default: break; } return (0); } void sctp_reset_in_stream(struct sctp_tcb *stcb, uint32_t number_entries, uint16_t * list) { uint32_t i; uint16_t temp; /* - * We set things to 0xffff since this is the last delivered sequence - * and we will be sending in 0 after the reset. + * We set things to 0xffffffff since this is the last delivered + * sequence and we will be sending in 0 after the reset. */ if (number_entries) { for (i = 0; i < number_entries; i++) { temp = ntohs(list[i]); if (temp >= stcb->asoc.streamincnt) { continue; } - stcb->asoc.strmin[temp].last_sequence_delivered = 0xffff; + stcb->asoc.strmin[temp].last_sequence_delivered = 0xffffffff; } } else { list = NULL; for (i = 0; i < stcb->asoc.streamincnt; i++) { - stcb->asoc.strmin[i].last_sequence_delivered = 0xffff; + stcb->asoc.strmin[i].last_sequence_delivered = 0xffffffff; } } sctp_ulp_notify(SCTP_NOTIFY_STR_RESET_RECV, stcb, number_entries, (void *)list, SCTP_SO_NOT_LOCKED); } static void sctp_reset_out_streams(struct sctp_tcb *stcb, uint32_t number_entries, uint16_t * list) { uint32_t i; uint16_t temp; if (number_entries > 0) { for (i = 0; i < number_entries; i++) { temp = ntohs(list[i]); if (temp >= stcb->asoc.streamoutcnt) { /* no such stream */ continue; } stcb->asoc.strmout[temp].next_sequence_send = 0; } } else { for (i = 0; i < stcb->asoc.streamoutcnt; i++) { stcb->asoc.strmout[i].next_sequence_send = 0; } } sctp_ulp_notify(SCTP_NOTIFY_STR_RESET_SEND, stcb, number_entries, (void *)list, SCTP_SO_NOT_LOCKED); } static void sctp_reset_clear_pending(struct sctp_tcb *stcb, uint32_t number_entries, uint16_t * list) { uint32_t i; uint16_t temp; if (number_entries > 0) { for (i = 0; i < number_entries; i++) { temp = ntohs(list[i]); if (temp >= stcb->asoc.streamoutcnt) { /* no such stream */ continue; } stcb->asoc.strmout[temp].state = SCTP_STREAM_OPEN; } } else { for (i = 0; i < stcb->asoc.streamoutcnt; i++) { stcb->asoc.strmout[i].state = SCTP_STREAM_OPEN; } } } struct sctp_stream_reset_request * sctp_find_stream_reset(struct sctp_tcb *stcb, uint32_t seq, struct sctp_tmit_chunk **bchk) { struct sctp_association *asoc; struct sctp_chunkhdr *ch; struct sctp_stream_reset_request *r; struct sctp_tmit_chunk *chk; int len, clen; asoc = &stcb->asoc; if (TAILQ_EMPTY(&stcb->asoc.control_send_queue)) { asoc->stream_reset_outstanding = 0; return (NULL); } if (stcb->asoc.str_reset == NULL) { asoc->stream_reset_outstanding = 0; return (NULL); } chk = stcb->asoc.str_reset; if (chk->data == NULL) { return (NULL); } if (bchk) { /* he wants a copy of the chk pointer */ *bchk = chk; } clen = chk->send_size; ch = mtod(chk->data, struct sctp_chunkhdr *); r = (struct sctp_stream_reset_request *)(ch + 1); if (ntohl(r->request_seq) == seq) { /* found it */ return (r); } len = SCTP_SIZE32(ntohs(r->ph.param_length)); if (clen > (len + (int)sizeof(struct sctp_chunkhdr))) { /* move to the next one, there can only be a max of two */ r = (struct sctp_stream_reset_request *)((caddr_t)r + len); if (ntohl(r->request_seq) == seq) { return (r); } } /* that seq is not here */ return (NULL); } static void sctp_clean_up_stream_reset(struct sctp_tcb *stcb) { struct sctp_association *asoc; struct sctp_tmit_chunk *chk = stcb->asoc.str_reset; if (stcb->asoc.str_reset == NULL) { return; } asoc = &stcb->asoc; sctp_timer_stop(SCTP_TIMER_TYPE_STRRESET, stcb->sctp_ep, stcb, chk->whoTo, SCTP_FROM_SCTP_INPUT + SCTP_LOC_28); TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next); if (chk->data) { sctp_m_freem(chk->data); chk->data = NULL; } asoc->ctrl_queue_cnt--; sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); /* sa_ignore NO_NULL_CHK */ stcb->asoc.str_reset = NULL; } static int sctp_handle_stream_reset_response(struct sctp_tcb *stcb, uint32_t seq, uint32_t action, struct sctp_stream_reset_response *respin) { uint16_t type; int lparm_len; struct sctp_association *asoc = &stcb->asoc; struct sctp_tmit_chunk *chk; struct sctp_stream_reset_request *req_param; struct sctp_stream_reset_out_request *req_out_param; struct sctp_stream_reset_in_request *req_in_param; uint32_t number_entries; if (asoc->stream_reset_outstanding == 0) { /* duplicate */ return (0); } if (seq == stcb->asoc.str_reset_seq_out) { req_param = sctp_find_stream_reset(stcb, seq, &chk); if (req_param != NULL) { stcb->asoc.str_reset_seq_out++; type = ntohs(req_param->ph.param_type); lparm_len = ntohs(req_param->ph.param_length); if (type == SCTP_STR_RESET_OUT_REQUEST) { int no_clear = 0; req_out_param = (struct sctp_stream_reset_out_request *)req_param; number_entries = (lparm_len - sizeof(struct sctp_stream_reset_out_request)) / sizeof(uint16_t); asoc->stream_reset_out_is_outstanding = 0; if (asoc->stream_reset_outstanding) asoc->stream_reset_outstanding--; if (action == SCTP_STREAM_RESET_RESULT_PERFORMED) { /* do it */ sctp_reset_out_streams(stcb, number_entries, req_out_param->list_of_streams); } else if (action == SCTP_STREAM_RESET_RESULT_DENIED) { sctp_ulp_notify(SCTP_NOTIFY_STR_RESET_DENIED_OUT, stcb, number_entries, req_out_param->list_of_streams, SCTP_SO_NOT_LOCKED); } else if (action == SCTP_STREAM_RESET_RESULT_IN_PROGRESS) { /* * Set it up so we don't stop * retransmitting */ asoc->stream_reset_outstanding++; stcb->asoc.str_reset_seq_out--; asoc->stream_reset_out_is_outstanding = 1; no_clear = 1; } else { sctp_ulp_notify(SCTP_NOTIFY_STR_RESET_FAILED_OUT, stcb, number_entries, req_out_param->list_of_streams, SCTP_SO_NOT_LOCKED); } if (no_clear == 0) { sctp_reset_clear_pending(stcb, number_entries, req_out_param->list_of_streams); } } else if (type == SCTP_STR_RESET_IN_REQUEST) { req_in_param = (struct sctp_stream_reset_in_request *)req_param; number_entries = (lparm_len - sizeof(struct sctp_stream_reset_in_request)) / sizeof(uint16_t); if (asoc->stream_reset_outstanding) asoc->stream_reset_outstanding--; if (action == SCTP_STREAM_RESET_RESULT_DENIED) { sctp_ulp_notify(SCTP_NOTIFY_STR_RESET_DENIED_IN, stcb, number_entries, req_in_param->list_of_streams, SCTP_SO_NOT_LOCKED); } else if (action != SCTP_STREAM_RESET_RESULT_PERFORMED) { sctp_ulp_notify(SCTP_NOTIFY_STR_RESET_FAILED_IN, stcb, number_entries, req_in_param->list_of_streams, SCTP_SO_NOT_LOCKED); } } else if (type == SCTP_STR_RESET_ADD_OUT_STREAMS) { /* Ok we now may have more streams */ int num_stream; num_stream = stcb->asoc.strm_pending_add_size; if (num_stream > (stcb->asoc.strm_realoutsize - stcb->asoc.streamoutcnt)) { /* TSNH */ num_stream = stcb->asoc.strm_realoutsize - stcb->asoc.streamoutcnt; } stcb->asoc.strm_pending_add_size = 0; if (asoc->stream_reset_outstanding) asoc->stream_reset_outstanding--; if (action == SCTP_STREAM_RESET_RESULT_PERFORMED) { /* Put the new streams into effect */ int i; for (i = asoc->streamoutcnt; i < (asoc->streamoutcnt + num_stream); i++) { asoc->strmout[i].state = SCTP_STREAM_OPEN; } asoc->streamoutcnt += num_stream; sctp_notify_stream_reset_add(stcb, stcb->asoc.streamincnt, stcb->asoc.streamoutcnt, 0); } else if (action == SCTP_STREAM_RESET_RESULT_DENIED) { sctp_notify_stream_reset_add(stcb, stcb->asoc.streamincnt, stcb->asoc.streamoutcnt, SCTP_STREAM_CHANGE_DENIED); } else { sctp_notify_stream_reset_add(stcb, stcb->asoc.streamincnt, stcb->asoc.streamoutcnt, SCTP_STREAM_CHANGE_FAILED); } } else if (type == SCTP_STR_RESET_ADD_IN_STREAMS) { if (asoc->stream_reset_outstanding) asoc->stream_reset_outstanding--; if (action == SCTP_STREAM_RESET_RESULT_DENIED) { sctp_notify_stream_reset_add(stcb, stcb->asoc.streamincnt, stcb->asoc.streamoutcnt, SCTP_STREAM_CHANGE_DENIED); } else if (action != SCTP_STREAM_RESET_RESULT_PERFORMED) { sctp_notify_stream_reset_add(stcb, stcb->asoc.streamincnt, stcb->asoc.streamoutcnt, SCTP_STREAM_CHANGE_FAILED); } } else if (type == SCTP_STR_RESET_TSN_REQUEST) { /** * a) Adopt the new in tsn. * b) reset the map * c) Adopt the new out-tsn */ struct sctp_stream_reset_response_tsn *resp; struct sctp_forward_tsn_chunk fwdtsn; int abort_flag = 0; if (respin == NULL) { /* huh ? */ return (0); } if (ntohs(respin->ph.param_length) < sizeof(struct sctp_stream_reset_response_tsn)) { return (0); } if (action == SCTP_STREAM_RESET_RESULT_PERFORMED) { resp = (struct sctp_stream_reset_response_tsn *)respin; asoc->stream_reset_outstanding--; fwdtsn.ch.chunk_length = htons(sizeof(struct sctp_forward_tsn_chunk)); fwdtsn.ch.chunk_type = SCTP_FORWARD_CUM_TSN; fwdtsn.new_cumulative_tsn = htonl(ntohl(resp->senders_next_tsn) - 1); sctp_handle_forward_tsn(stcb, &fwdtsn, &abort_flag, NULL, 0); if (abort_flag) { return (1); } stcb->asoc.highest_tsn_inside_map = (ntohl(resp->senders_next_tsn) - 1); if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MAP_LOGGING_ENABLE) { sctp_log_map(0, 7, asoc->highest_tsn_inside_map, SCTP_MAP_SLIDE_RESULT); } stcb->asoc.tsn_last_delivered = stcb->asoc.cumulative_tsn = stcb->asoc.highest_tsn_inside_map; stcb->asoc.mapping_array_base_tsn = ntohl(resp->senders_next_tsn); memset(stcb->asoc.mapping_array, 0, stcb->asoc.mapping_array_size); stcb->asoc.highest_tsn_inside_nr_map = stcb->asoc.highest_tsn_inside_map; memset(stcb->asoc.nr_mapping_array, 0, stcb->asoc.mapping_array_size); stcb->asoc.sending_seq = ntohl(resp->receivers_next_tsn); stcb->asoc.last_acked_seq = stcb->asoc.cumulative_tsn; sctp_reset_out_streams(stcb, 0, (uint16_t *) NULL); sctp_reset_in_stream(stcb, 0, (uint16_t *) NULL); sctp_notify_stream_reset_tsn(stcb, stcb->asoc.sending_seq, (stcb->asoc.mapping_array_base_tsn + 1), 0); } else if (action == SCTP_STREAM_RESET_RESULT_DENIED) { sctp_notify_stream_reset_tsn(stcb, stcb->asoc.sending_seq, (stcb->asoc.mapping_array_base_tsn + 1), SCTP_ASSOC_RESET_DENIED); } else { sctp_notify_stream_reset_tsn(stcb, stcb->asoc.sending_seq, (stcb->asoc.mapping_array_base_tsn + 1), SCTP_ASSOC_RESET_FAILED); } } /* get rid of the request and get the request flags */ if (asoc->stream_reset_outstanding == 0) { sctp_clean_up_stream_reset(stcb); } } } if (asoc->stream_reset_outstanding == 0) { sctp_send_stream_reset_out_if_possible(stcb, SCTP_SO_NOT_LOCKED); } return (0); } static void sctp_handle_str_reset_request_in(struct sctp_tcb *stcb, struct sctp_tmit_chunk *chk, struct sctp_stream_reset_in_request *req, int trunc) { uint32_t seq; int len, i; int number_entries; uint16_t temp; /* * peer wants me to send a str-reset to him for my outgoing seq's if * seq_in is right. */ struct sctp_association *asoc = &stcb->asoc; seq = ntohl(req->request_seq); if (asoc->str_reset_seq_in == seq) { asoc->last_reset_action[1] = asoc->last_reset_action[0]; if (!(asoc->local_strreset_support & SCTP_ENABLE_RESET_STREAM_REQ)) { asoc->last_reset_action[0] = SCTP_STREAM_RESET_RESULT_DENIED; } else if (trunc) { /* Can't do it, since they exceeded our buffer size */ asoc->last_reset_action[0] = SCTP_STREAM_RESET_RESULT_DENIED; } else if (stcb->asoc.stream_reset_out_is_outstanding == 0) { len = ntohs(req->ph.param_length); number_entries = ((len - sizeof(struct sctp_stream_reset_in_request)) / sizeof(uint16_t)); if (number_entries) { for (i = 0; i < number_entries; i++) { temp = ntohs(req->list_of_streams[i]); if (temp >= stcb->asoc.streamoutcnt) { asoc->last_reset_action[0] = SCTP_STREAM_RESET_RESULT_DENIED; goto bad_boy; } req->list_of_streams[i] = temp; } for (i = 0; i < number_entries; i++) { if (stcb->asoc.strmout[req->list_of_streams[i]].state == SCTP_STREAM_OPEN) { stcb->asoc.strmout[req->list_of_streams[i]].state = SCTP_STREAM_RESET_PENDING; } } } else { /* Its all */ for (i = 0; i < stcb->asoc.streamoutcnt; i++) { if (stcb->asoc.strmout[i].state == SCTP_STREAM_OPEN) stcb->asoc.strmout[i].state = SCTP_STREAM_RESET_PENDING; } } asoc->last_reset_action[0] = SCTP_STREAM_RESET_RESULT_PERFORMED; } else { /* Can't do it, since we have sent one out */ asoc->last_reset_action[0] = SCTP_STREAM_RESET_RESULT_ERR_IN_PROGRESS; } bad_boy: sctp_add_stream_reset_result(chk, seq, asoc->last_reset_action[0]); asoc->str_reset_seq_in++; } else if (asoc->str_reset_seq_in - 1 == seq) { sctp_add_stream_reset_result(chk, seq, asoc->last_reset_action[0]); } else if (asoc->str_reset_seq_in - 2 == seq) { sctp_add_stream_reset_result(chk, seq, asoc->last_reset_action[1]); } else { sctp_add_stream_reset_result(chk, seq, SCTP_STREAM_RESET_RESULT_ERR_BAD_SEQNO); } sctp_send_stream_reset_out_if_possible(stcb, SCTP_SO_NOT_LOCKED); } static int sctp_handle_str_reset_request_tsn(struct sctp_tcb *stcb, struct sctp_tmit_chunk *chk, struct sctp_stream_reset_tsn_request *req) { /* reset all in and out and update the tsn */ /* * A) reset my str-seq's on in and out. B) Select a receive next, * and set cum-ack to it. Also process this selected number as a * fwd-tsn as well. C) set in the response my next sending seq. */ struct sctp_forward_tsn_chunk fwdtsn; struct sctp_association *asoc = &stcb->asoc; int abort_flag = 0; uint32_t seq; seq = ntohl(req->request_seq); if (asoc->str_reset_seq_in == seq) { asoc->last_reset_action[1] = stcb->asoc.last_reset_action[0]; if (!(asoc->local_strreset_support & SCTP_ENABLE_CHANGE_ASSOC_REQ)) { asoc->last_reset_action[0] = SCTP_STREAM_RESET_RESULT_DENIED; } else { fwdtsn.ch.chunk_length = htons(sizeof(struct sctp_forward_tsn_chunk)); fwdtsn.ch.chunk_type = SCTP_FORWARD_CUM_TSN; fwdtsn.ch.chunk_flags = 0; fwdtsn.new_cumulative_tsn = htonl(stcb->asoc.highest_tsn_inside_map + 1); sctp_handle_forward_tsn(stcb, &fwdtsn, &abort_flag, NULL, 0); if (abort_flag) { return (1); } asoc->highest_tsn_inside_map += SCTP_STREAM_RESET_TSN_DELTA; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MAP_LOGGING_ENABLE) { sctp_log_map(0, 10, asoc->highest_tsn_inside_map, SCTP_MAP_SLIDE_RESULT); } asoc->tsn_last_delivered = asoc->cumulative_tsn = asoc->highest_tsn_inside_map; asoc->mapping_array_base_tsn = asoc->highest_tsn_inside_map + 1; memset(asoc->mapping_array, 0, asoc->mapping_array_size); asoc->highest_tsn_inside_nr_map = asoc->highest_tsn_inside_map; memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size); atomic_add_int(&asoc->sending_seq, 1); /* save off historical data for retrans */ asoc->last_sending_seq[1] = asoc->last_sending_seq[0]; asoc->last_sending_seq[0] = asoc->sending_seq; asoc->last_base_tsnsent[1] = asoc->last_base_tsnsent[0]; asoc->last_base_tsnsent[0] = asoc->mapping_array_base_tsn; sctp_reset_out_streams(stcb, 0, (uint16_t *) NULL); sctp_reset_in_stream(stcb, 0, (uint16_t *) NULL); asoc->last_reset_action[0] = SCTP_STREAM_RESET_RESULT_PERFORMED; sctp_notify_stream_reset_tsn(stcb, asoc->sending_seq, (asoc->mapping_array_base_tsn + 1), 0); } sctp_add_stream_reset_result_tsn(chk, seq, asoc->last_reset_action[0], asoc->last_sending_seq[0], asoc->last_base_tsnsent[0]); asoc->str_reset_seq_in++; } else if (asoc->str_reset_seq_in - 1 == seq) { sctp_add_stream_reset_result_tsn(chk, seq, asoc->last_reset_action[0], asoc->last_sending_seq[0], asoc->last_base_tsnsent[0]); } else if (asoc->str_reset_seq_in - 2 == seq) { sctp_add_stream_reset_result_tsn(chk, seq, asoc->last_reset_action[1], asoc->last_sending_seq[1], asoc->last_base_tsnsent[1]); } else { sctp_add_stream_reset_result(chk, seq, SCTP_STREAM_RESET_RESULT_ERR_BAD_SEQNO); } return (0); } static void sctp_handle_str_reset_request_out(struct sctp_tcb *stcb, struct sctp_tmit_chunk *chk, struct sctp_stream_reset_out_request *req, int trunc) { uint32_t seq, tsn; int number_entries, len; struct sctp_association *asoc = &stcb->asoc; seq = ntohl(req->request_seq); /* now if its not a duplicate we process it */ if (asoc->str_reset_seq_in == seq) { len = ntohs(req->ph.param_length); number_entries = ((len - sizeof(struct sctp_stream_reset_out_request)) / sizeof(uint16_t)); /* * the sender is resetting, handle the list issue.. we must * a) verify if we can do the reset, if so no problem b) If * we can't do the reset we must copy the request. c) queue * it, and setup the data in processor to trigger it off * when needed and dequeue all the queued data. */ tsn = ntohl(req->send_reset_at_tsn); /* move the reset action back one */ asoc->last_reset_action[1] = asoc->last_reset_action[0]; if (!(asoc->local_strreset_support & SCTP_ENABLE_RESET_STREAM_REQ)) { asoc->last_reset_action[0] = SCTP_STREAM_RESET_RESULT_DENIED; } else if (trunc) { asoc->last_reset_action[0] = SCTP_STREAM_RESET_RESULT_DENIED; } else if (SCTP_TSN_GE(asoc->cumulative_tsn, tsn)) { /* we can do it now */ sctp_reset_in_stream(stcb, number_entries, req->list_of_streams); asoc->last_reset_action[0] = SCTP_STREAM_RESET_RESULT_PERFORMED; } else { /* * we must queue it up and thus wait for the TSN's * to arrive that are at or before tsn */ struct sctp_stream_reset_list *liste; int siz; siz = sizeof(struct sctp_stream_reset_list) + (number_entries * sizeof(uint16_t)); SCTP_MALLOC(liste, struct sctp_stream_reset_list *, siz, SCTP_M_STRESET); if (liste == NULL) { /* gak out of memory */ asoc->last_reset_action[0] = SCTP_STREAM_RESET_RESULT_DENIED; sctp_add_stream_reset_result(chk, seq, asoc->last_reset_action[0]); return; } liste->seq = seq; liste->tsn = tsn; liste->number_entries = number_entries; memcpy(&liste->list_of_streams, req->list_of_streams, number_entries * sizeof(uint16_t)); TAILQ_INSERT_TAIL(&asoc->resetHead, liste, next_resp); asoc->last_reset_action[0] = SCTP_STREAM_RESET_RESULT_IN_PROGRESS; } sctp_add_stream_reset_result(chk, seq, asoc->last_reset_action[0]); asoc->str_reset_seq_in++; } else if ((asoc->str_reset_seq_in - 1) == seq) { /* * one seq back, just echo back last action since my * response was lost. */ sctp_add_stream_reset_result(chk, seq, asoc->last_reset_action[0]); } else if ((asoc->str_reset_seq_in - 2) == seq) { /* * two seq back, just echo back last action since my * response was lost. */ sctp_add_stream_reset_result(chk, seq, asoc->last_reset_action[1]); } else { sctp_add_stream_reset_result(chk, seq, SCTP_STREAM_RESET_RESULT_ERR_BAD_SEQNO); } } static void sctp_handle_str_reset_add_strm(struct sctp_tcb *stcb, struct sctp_tmit_chunk *chk, struct sctp_stream_reset_add_strm *str_add) { /* * Peer is requesting to add more streams. If its within our * max-streams we will allow it. */ uint32_t num_stream, i; uint32_t seq; struct sctp_association *asoc = &stcb->asoc; struct sctp_queued_to_read *ctl, *nctl; /* Get the number. */ seq = ntohl(str_add->request_seq); num_stream = ntohs(str_add->number_of_streams); /* Now what would be the new total? */ if (asoc->str_reset_seq_in == seq) { num_stream += stcb->asoc.streamincnt; stcb->asoc.last_reset_action[1] = stcb->asoc.last_reset_action[0]; if (!(asoc->local_strreset_support & SCTP_ENABLE_CHANGE_ASSOC_REQ)) { asoc->last_reset_action[0] = SCTP_STREAM_RESET_RESULT_DENIED; } else if ((num_stream > stcb->asoc.max_inbound_streams) || (num_stream > 0xffff)) { /* We must reject it they ask for to many */ denied: stcb->asoc.last_reset_action[0] = SCTP_STREAM_RESET_RESULT_DENIED; } else { /* Ok, we can do that :-) */ struct sctp_stream_in *oldstrm; /* save off the old */ oldstrm = stcb->asoc.strmin; SCTP_MALLOC(stcb->asoc.strmin, struct sctp_stream_in *, (num_stream * sizeof(struct sctp_stream_in)), SCTP_M_STRMI); if (stcb->asoc.strmin == NULL) { stcb->asoc.strmin = oldstrm; goto denied; } /* copy off the old data */ for (i = 0; i < stcb->asoc.streamincnt; i++) { TAILQ_INIT(&stcb->asoc.strmin[i].inqueue); + TAILQ_INIT(&stcb->asoc.strmin[i].uno_inqueue); stcb->asoc.strmin[i].stream_no = i; stcb->asoc.strmin[i].last_sequence_delivered = oldstrm[i].last_sequence_delivered; stcb->asoc.strmin[i].delivery_started = oldstrm[i].delivery_started; + stcb->asoc.strmin[i].pd_api_started = oldstrm[i].pd_api_started; /* now anything on those queues? */ - TAILQ_FOREACH_SAFE(ctl, &oldstrm[i].inqueue, next, nctl) { - TAILQ_REMOVE(&oldstrm[i].inqueue, ctl, next); - TAILQ_INSERT_TAIL(&stcb->asoc.strmin[i].inqueue, ctl, next); + TAILQ_FOREACH_SAFE(ctl, &oldstrm[i].inqueue, next_instrm, nctl) { + TAILQ_REMOVE(&oldstrm[i].inqueue, ctl, next_instrm); + TAILQ_INSERT_TAIL(&stcb->asoc.strmin[i].inqueue, ctl, next_instrm); } + TAILQ_FOREACH_SAFE(ctl, &oldstrm[i].uno_inqueue, next_instrm, nctl) { + TAILQ_REMOVE(&oldstrm[i].uno_inqueue, ctl, next_instrm); + TAILQ_INSERT_TAIL(&stcb->asoc.strmin[i].uno_inqueue, ctl, next_instrm); + } } /* Init the new streams */ for (i = stcb->asoc.streamincnt; i < num_stream; i++) { TAILQ_INIT(&stcb->asoc.strmin[i].inqueue); + TAILQ_INIT(&stcb->asoc.strmin[i].uno_inqueue); stcb->asoc.strmin[i].stream_no = i; - stcb->asoc.strmin[i].last_sequence_delivered = 0xffff; + stcb->asoc.strmin[i].last_sequence_delivered = 0xffffffff; + stcb->asoc.strmin[i].pd_api_started = 0; stcb->asoc.strmin[i].delivery_started = 0; } SCTP_FREE(oldstrm, SCTP_M_STRMI); /* update the size */ stcb->asoc.streamincnt = num_stream; stcb->asoc.last_reset_action[0] = SCTP_STREAM_RESET_RESULT_PERFORMED; sctp_notify_stream_reset_add(stcb, stcb->asoc.streamincnt, stcb->asoc.streamoutcnt, 0); } sctp_add_stream_reset_result(chk, seq, asoc->last_reset_action[0]); asoc->str_reset_seq_in++; } else if ((asoc->str_reset_seq_in - 1) == seq) { /* * one seq back, just echo back last action since my * response was lost. */ sctp_add_stream_reset_result(chk, seq, asoc->last_reset_action[0]); } else if ((asoc->str_reset_seq_in - 2) == seq) { /* * two seq back, just echo back last action since my * response was lost. */ sctp_add_stream_reset_result(chk, seq, asoc->last_reset_action[1]); } else { sctp_add_stream_reset_result(chk, seq, SCTP_STREAM_RESET_RESULT_ERR_BAD_SEQNO); } } static void sctp_handle_str_reset_add_out_strm(struct sctp_tcb *stcb, struct sctp_tmit_chunk *chk, struct sctp_stream_reset_add_strm *str_add) { /* * Peer is requesting to add more streams. If its within our * max-streams we will allow it. */ uint16_t num_stream; uint32_t seq; struct sctp_association *asoc = &stcb->asoc; /* Get the number. */ seq = ntohl(str_add->request_seq); num_stream = ntohs(str_add->number_of_streams); /* Now what would be the new total? */ if (asoc->str_reset_seq_in == seq) { stcb->asoc.last_reset_action[1] = stcb->asoc.last_reset_action[0]; if (!(asoc->local_strreset_support & SCTP_ENABLE_CHANGE_ASSOC_REQ)) { asoc->last_reset_action[0] = SCTP_STREAM_RESET_RESULT_DENIED; } else if (stcb->asoc.stream_reset_outstanding) { /* We must reject it we have something pending */ stcb->asoc.last_reset_action[0] = SCTP_STREAM_RESET_RESULT_ERR_IN_PROGRESS; } else { /* Ok, we can do that :-) */ int mychk; mychk = stcb->asoc.streamoutcnt; mychk += num_stream; if (mychk < 0x10000) { stcb->asoc.last_reset_action[0] = SCTP_STREAM_RESET_RESULT_PERFORMED; if (sctp_send_str_reset_req(stcb, 0, NULL, 0, 0, 1, num_stream, 0, 1)) { stcb->asoc.last_reset_action[0] = SCTP_STREAM_RESET_RESULT_DENIED; } } else { stcb->asoc.last_reset_action[0] = SCTP_STREAM_RESET_RESULT_DENIED; } } sctp_add_stream_reset_result(chk, seq, stcb->asoc.last_reset_action[0]); asoc->str_reset_seq_in++; } else if ((asoc->str_reset_seq_in - 1) == seq) { /* * one seq back, just echo back last action since my * response was lost. */ sctp_add_stream_reset_result(chk, seq, asoc->last_reset_action[0]); } else if ((asoc->str_reset_seq_in - 2) == seq) { /* * two seq back, just echo back last action since my * response was lost. */ sctp_add_stream_reset_result(chk, seq, asoc->last_reset_action[1]); } else { sctp_add_stream_reset_result(chk, seq, SCTP_STREAM_RESET_RESULT_ERR_BAD_SEQNO); } } #ifdef __GNUC__ __attribute__((noinline)) #endif static int sctp_handle_stream_reset(struct sctp_tcb *stcb, struct mbuf *m, int offset, struct sctp_chunkhdr *ch_req) { uint16_t remaining_length, param_len, ptype; struct sctp_paramhdr pstore; uint8_t cstore[SCTP_CHUNK_BUFFER_SIZE]; uint32_t seq = 0; int num_req = 0; int trunc = 0; struct sctp_tmit_chunk *chk; struct sctp_chunkhdr *ch; struct sctp_paramhdr *ph; int ret_code = 0; int num_param = 0; /* now it may be a reset or a reset-response */ remaining_length = ntohs(ch_req->chunk_length) - sizeof(struct sctp_chunkhdr); /* setup for adding the response */ sctp_alloc_a_chunk(stcb, chk); if (chk == NULL) { return (ret_code); } chk->copy_by_ref = 0; chk->rec.chunk_id.id = SCTP_STREAM_RESET; chk->rec.chunk_id.can_take_data = 0; chk->flags = 0; chk->asoc = &stcb->asoc; chk->no_fr_allowed = 0; chk->book_size = chk->send_size = sizeof(struct sctp_chunkhdr); chk->book_size_scale = 0; chk->data = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA); if (chk->data == NULL) { strres_nochunk: if (chk->data) { sctp_m_freem(chk->data); chk->data = NULL; } sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); return (ret_code); } SCTP_BUF_RESV_UF(chk->data, SCTP_MIN_OVERHEAD); /* setup chunk parameters */ chk->sent = SCTP_DATAGRAM_UNSENT; chk->snd_count = 0; chk->whoTo = NULL; ch = mtod(chk->data, struct sctp_chunkhdr *); ch->chunk_type = SCTP_STREAM_RESET; ch->chunk_flags = 0; ch->chunk_length = htons(chk->send_size); SCTP_BUF_LEN(chk->data) = SCTP_SIZE32(chk->send_size); offset += sizeof(struct sctp_chunkhdr); while (remaining_length >= sizeof(struct sctp_paramhdr)) { ph = (struct sctp_paramhdr *)sctp_m_getptr(m, offset, sizeof(pstore), (uint8_t *) & pstore); if (ph == NULL) { /* TSNH */ break; } param_len = ntohs(ph->param_length); if ((param_len > remaining_length) || (param_len < (sizeof(struct sctp_paramhdr) + sizeof(uint32_t)))) { /* bad parameter length */ break; } ph = (struct sctp_paramhdr *)sctp_m_getptr(m, offset, min(param_len, sizeof(cstore)), (uint8_t *) & cstore); if (ph == NULL) { /* TSNH */ break; } ptype = ntohs(ph->param_type); num_param++; if (param_len > sizeof(cstore)) { trunc = 1; } else { trunc = 0; } if (num_param > SCTP_MAX_RESET_PARAMS) { /* hit the max of parameters already sorry.. */ break; } if (ptype == SCTP_STR_RESET_OUT_REQUEST) { struct sctp_stream_reset_out_request *req_out; if (param_len < sizeof(struct sctp_stream_reset_out_request)) { break; } req_out = (struct sctp_stream_reset_out_request *)ph; num_req++; if (stcb->asoc.stream_reset_outstanding) { seq = ntohl(req_out->response_seq); if (seq == stcb->asoc.str_reset_seq_out) { /* implicit ack */ (void)sctp_handle_stream_reset_response(stcb, seq, SCTP_STREAM_RESET_RESULT_PERFORMED, NULL); } } sctp_handle_str_reset_request_out(stcb, chk, req_out, trunc); } else if (ptype == SCTP_STR_RESET_ADD_OUT_STREAMS) { struct sctp_stream_reset_add_strm *str_add; if (param_len < sizeof(struct sctp_stream_reset_add_strm)) { break; } str_add = (struct sctp_stream_reset_add_strm *)ph; num_req++; sctp_handle_str_reset_add_strm(stcb, chk, str_add); } else if (ptype == SCTP_STR_RESET_ADD_IN_STREAMS) { struct sctp_stream_reset_add_strm *str_add; if (param_len < sizeof(struct sctp_stream_reset_add_strm)) { break; } str_add = (struct sctp_stream_reset_add_strm *)ph; num_req++; sctp_handle_str_reset_add_out_strm(stcb, chk, str_add); } else if (ptype == SCTP_STR_RESET_IN_REQUEST) { struct sctp_stream_reset_in_request *req_in; num_req++; req_in = (struct sctp_stream_reset_in_request *)ph; sctp_handle_str_reset_request_in(stcb, chk, req_in, trunc); } else if (ptype == SCTP_STR_RESET_TSN_REQUEST) { struct sctp_stream_reset_tsn_request *req_tsn; num_req++; req_tsn = (struct sctp_stream_reset_tsn_request *)ph; if (sctp_handle_str_reset_request_tsn(stcb, chk, req_tsn)) { ret_code = 1; goto strres_nochunk; } /* no more */ break; } else if (ptype == SCTP_STR_RESET_RESPONSE) { struct sctp_stream_reset_response *resp; uint32_t result; if (param_len < sizeof(struct sctp_stream_reset_response)) { break; } resp = (struct sctp_stream_reset_response *)ph; seq = ntohl(resp->response_seq); result = ntohl(resp->result); if (sctp_handle_stream_reset_response(stcb, seq, result, resp)) { ret_code = 1; goto strres_nochunk; } } else { break; } offset += SCTP_SIZE32(param_len); if (remaining_length >= SCTP_SIZE32(param_len)) { remaining_length -= SCTP_SIZE32(param_len); } else { remaining_length = 0; } } if (num_req == 0) { /* we have no response free the stuff */ goto strres_nochunk; } /* ok we have a chunk to link in */ TAILQ_INSERT_TAIL(&stcb->asoc.control_send_queue, chk, sctp_next); stcb->asoc.ctrl_queue_cnt++; return (ret_code); } /* * Handle a router or endpoints report of a packet loss, there are two ways * to handle this, either we get the whole packet and must disect it * ourselves (possibly with truncation and or corruption) or it is a summary * from a middle box that did the disectting for us. */ static void sctp_handle_packet_dropped(struct sctp_pktdrop_chunk *cp, struct sctp_tcb *stcb, struct sctp_nets *net, uint32_t limit) { uint32_t bottle_bw, on_queue; uint16_t trunc_len; unsigned int chlen; unsigned int at; struct sctp_chunk_desc desc; struct sctp_chunkhdr *ch; chlen = ntohs(cp->ch.chunk_length); chlen -= sizeof(struct sctp_pktdrop_chunk); /* XXX possible chlen underflow */ if (chlen == 0) { ch = NULL; if (cp->ch.chunk_flags & SCTP_FROM_MIDDLE_BOX) SCTP_STAT_INCR(sctps_pdrpbwrpt); } else { ch = (struct sctp_chunkhdr *)(cp->data + sizeof(struct sctphdr)); chlen -= sizeof(struct sctphdr); /* XXX possible chlen underflow */ memset(&desc, 0, sizeof(desc)); } trunc_len = (uint16_t) ntohs(cp->trunc_len); if (trunc_len > limit) { trunc_len = limit; } /* now the chunks themselves */ while ((ch != NULL) && (chlen >= sizeof(struct sctp_chunkhdr))) { desc.chunk_type = ch->chunk_type; /* get amount we need to move */ at = ntohs(ch->chunk_length); if (at < sizeof(struct sctp_chunkhdr)) { /* corrupt chunk, maybe at the end? */ SCTP_STAT_INCR(sctps_pdrpcrupt); break; } if (trunc_len == 0) { /* we are supposed to have all of it */ if (at > chlen) { /* corrupt skip it */ SCTP_STAT_INCR(sctps_pdrpcrupt); break; } } else { /* is there enough of it left ? */ if (desc.chunk_type == SCTP_DATA) { if (chlen < (sizeof(struct sctp_data_chunk) + sizeof(desc.data_bytes))) { break; } } else { if (chlen < sizeof(struct sctp_chunkhdr)) { break; } } } if (desc.chunk_type == SCTP_DATA) { /* can we get out the tsn? */ if ((cp->ch.chunk_flags & SCTP_FROM_MIDDLE_BOX)) SCTP_STAT_INCR(sctps_pdrpmbda); if (chlen >= (sizeof(struct sctp_data_chunk) + sizeof(uint32_t))) { /* yep */ struct sctp_data_chunk *dcp; uint8_t *ddp; unsigned int iii; dcp = (struct sctp_data_chunk *)ch; ddp = (uint8_t *) (dcp + 1); for (iii = 0; iii < sizeof(desc.data_bytes); iii++) { desc.data_bytes[iii] = ddp[iii]; } desc.tsn_ifany = dcp->dp.tsn; } else { /* nope we are done. */ SCTP_STAT_INCR(sctps_pdrpnedat); break; } } else { if ((cp->ch.chunk_flags & SCTP_FROM_MIDDLE_BOX)) SCTP_STAT_INCR(sctps_pdrpmbct); } if (process_chunk_drop(stcb, &desc, net, cp->ch.chunk_flags)) { SCTP_STAT_INCR(sctps_pdrppdbrk); break; } if (SCTP_SIZE32(at) > chlen) { break; } chlen -= SCTP_SIZE32(at); if (chlen < sizeof(struct sctp_chunkhdr)) { /* done, none left */ break; } ch = (struct sctp_chunkhdr *)((caddr_t)ch + SCTP_SIZE32(at)); } /* Now update any rwnd --- possibly */ if ((cp->ch.chunk_flags & SCTP_FROM_MIDDLE_BOX) == 0) { /* From a peer, we get a rwnd report */ uint32_t a_rwnd; SCTP_STAT_INCR(sctps_pdrpfehos); bottle_bw = ntohl(cp->bottle_bw); on_queue = ntohl(cp->current_onq); if (bottle_bw && on_queue) { /* a rwnd report is in here */ if (bottle_bw > on_queue) a_rwnd = bottle_bw - on_queue; else a_rwnd = 0; if (a_rwnd == 0) stcb->asoc.peers_rwnd = 0; else { if (a_rwnd > stcb->asoc.total_flight) { stcb->asoc.peers_rwnd = a_rwnd - stcb->asoc.total_flight; } else { stcb->asoc.peers_rwnd = 0; } if (stcb->asoc.peers_rwnd < stcb->sctp_ep->sctp_ep.sctp_sws_sender) { /* SWS sender side engages */ stcb->asoc.peers_rwnd = 0; } } } } else { SCTP_STAT_INCR(sctps_pdrpfmbox); } /* now middle boxes in sat networks get a cwnd bump */ if ((cp->ch.chunk_flags & SCTP_FROM_MIDDLE_BOX) && (stcb->asoc.sat_t3_loss_recovery == 0) && (stcb->asoc.sat_network)) { /* * This is debateable but for sat networks it makes sense * Note if a T3 timer has went off, we will prohibit any * changes to cwnd until we exit the t3 loss recovery. */ stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped(stcb, net, cp, &bottle_bw, &on_queue); } } /* * handles all control chunks in a packet inputs: - m: mbuf chain, assumed to * still contain IP/SCTP header - stcb: is the tcb found for this packet - * offset: offset into the mbuf chain to first chunkhdr - length: is the * length of the complete packet outputs: - length: modified to remaining * length after control processing - netp: modified to new sctp_nets after * cookie-echo processing - return NULL to discard the packet (ie. no asoc, * bad packet,...) otherwise return the tcb for this packet */ #ifdef __GNUC__ __attribute__((noinline)) #endif static struct sctp_tcb * sctp_process_control(struct mbuf *m, int iphlen, int *offset, int length, struct sockaddr *src, struct sockaddr *dst, struct sctphdr *sh, struct sctp_chunkhdr *ch, struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sctp_nets **netp, int *fwd_tsn_seen, uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum, uint32_t vrf_id, uint16_t port) { struct sctp_association *asoc; struct mbuf *op_err; char msg[SCTP_DIAG_INFO_LEN]; uint32_t vtag_in; int num_chunks = 0; /* number of control chunks processed */ uint32_t chk_length; int ret; int abort_no_unlock = 0; int ecne_seen = 0; /* * How big should this be, and should it be alloc'd? Lets try the * d-mtu-ceiling for now (2k) and that should hopefully work ... * until we get into jumbo grams and such.. */ uint8_t chunk_buf[SCTP_CHUNK_BUFFER_SIZE]; struct sctp_tcb *locked_tcb = stcb; int got_auth = 0; uint32_t auth_offset = 0, auth_len = 0; int auth_skipped = 0; int asconf_cnt = 0; #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) struct socket *so; #endif SCTPDBG(SCTP_DEBUG_INPUT1, "sctp_process_control: iphlen=%u, offset=%u, length=%u stcb:%p\n", iphlen, *offset, length, (void *)stcb); /* validate chunk header length... */ if (ntohs(ch->chunk_length) < sizeof(*ch)) { SCTPDBG(SCTP_DEBUG_INPUT1, "Invalid header length %d\n", ntohs(ch->chunk_length)); if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } return (NULL); } /* * validate the verification tag */ vtag_in = ntohl(sh->v_tag); if (locked_tcb) { SCTP_TCB_LOCK_ASSERT(locked_tcb); } if (ch->chunk_type == SCTP_INITIATION) { SCTPDBG(SCTP_DEBUG_INPUT1, "Its an INIT of len:%d vtag:%x\n", ntohs(ch->chunk_length), vtag_in); if (vtag_in != 0) { /* protocol error- silently discard... */ SCTP_STAT_INCR(sctps_badvtag); if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } return (NULL); } } else if (ch->chunk_type != SCTP_COOKIE_ECHO) { /* * If there is no stcb, skip the AUTH chunk and process * later after a stcb is found (to validate the lookup was * valid. */ if ((ch->chunk_type == SCTP_AUTHENTICATION) && (stcb == NULL) && (inp->auth_supported == 1)) { /* save this chunk for later processing */ auth_skipped = 1; auth_offset = *offset; auth_len = ntohs(ch->chunk_length); /* (temporarily) move past this chunk */ *offset += SCTP_SIZE32(auth_len); if (*offset >= length) { /* no more data left in the mbuf chain */ *offset = length; if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } return (NULL); } ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, *offset, sizeof(struct sctp_chunkhdr), chunk_buf); } if (ch == NULL) { /* Help */ *offset = length; if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } return (NULL); } if (ch->chunk_type == SCTP_COOKIE_ECHO) { goto process_control_chunks; } /* * first check if it's an ASCONF with an unknown src addr we * need to look inside to find the association */ if (ch->chunk_type == SCTP_ASCONF && stcb == NULL) { struct sctp_chunkhdr *asconf_ch = ch; uint32_t asconf_offset = 0, asconf_len = 0; /* inp's refcount may be reduced */ SCTP_INP_INCR_REF(inp); asconf_offset = *offset; do { asconf_len = ntohs(asconf_ch->chunk_length); if (asconf_len < sizeof(struct sctp_asconf_paramhdr)) break; stcb = sctp_findassociation_ep_asconf(m, *offset, dst, sh, &inp, netp, vrf_id); if (stcb != NULL) break; asconf_offset += SCTP_SIZE32(asconf_len); asconf_ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, asconf_offset, sizeof(struct sctp_chunkhdr), chunk_buf); } while (asconf_ch != NULL && asconf_ch->chunk_type == SCTP_ASCONF); if (stcb == NULL) { /* * reduce inp's refcount if not reduced in * sctp_findassociation_ep_asconf(). */ SCTP_INP_DECR_REF(inp); } else { locked_tcb = stcb; } /* now go back and verify any auth chunk to be sure */ if (auth_skipped && (stcb != NULL)) { struct sctp_auth_chunk *auth; auth = (struct sctp_auth_chunk *) sctp_m_getptr(m, auth_offset, auth_len, chunk_buf); got_auth = 1; auth_skipped = 0; if ((auth == NULL) || sctp_handle_auth(stcb, auth, m, auth_offset)) { /* auth HMAC failed so dump it */ *offset = length; if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } return (NULL); } else { /* remaining chunks are HMAC checked */ stcb->asoc.authenticated = 1; } } } if (stcb == NULL) { snprintf(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__); op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), msg); /* no association, so it's out of the blue... */ sctp_handle_ootb(m, iphlen, *offset, src, dst, sh, inp, op_err, mflowtype, mflowid, inp->fibnum, vrf_id, port); *offset = length; if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } return (NULL); } asoc = &stcb->asoc; /* ABORT and SHUTDOWN can use either v_tag... */ if ((ch->chunk_type == SCTP_ABORT_ASSOCIATION) || (ch->chunk_type == SCTP_SHUTDOWN_COMPLETE) || (ch->chunk_type == SCTP_PACKET_DROPPED)) { /* Take the T-bit always into account. */ if ((((ch->chunk_flags & SCTP_HAD_NO_TCB) == 0) && (vtag_in == asoc->my_vtag)) || (((ch->chunk_flags & SCTP_HAD_NO_TCB) == SCTP_HAD_NO_TCB) && (vtag_in == asoc->peer_vtag))) { /* this is valid */ } else { /* drop this packet... */ SCTP_STAT_INCR(sctps_badvtag); if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } return (NULL); } } else if (ch->chunk_type == SCTP_SHUTDOWN_ACK) { if (vtag_in != asoc->my_vtag) { /* * this could be a stale SHUTDOWN-ACK or the * peer never got the SHUTDOWN-COMPLETE and * is still hung; we have started a new asoc * but it won't complete until the shutdown * is completed */ if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } snprintf(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__); op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), msg); sctp_handle_ootb(m, iphlen, *offset, src, dst, sh, inp, op_err, mflowtype, mflowid, fibnum, vrf_id, port); return (NULL); } } else { /* for all other chunks, vtag must match */ if (vtag_in != asoc->my_vtag) { /* invalid vtag... */ SCTPDBG(SCTP_DEBUG_INPUT3, "invalid vtag: %xh, expect %xh\n", vtag_in, asoc->my_vtag); SCTP_STAT_INCR(sctps_badvtag); if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } *offset = length; return (NULL); } } } /* end if !SCTP_COOKIE_ECHO */ /* * process all control chunks... */ if (((ch->chunk_type == SCTP_SELECTIVE_ACK) || (ch->chunk_type == SCTP_NR_SELECTIVE_ACK) || (ch->chunk_type == SCTP_HEARTBEAT_REQUEST)) && (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_ECHOED)) { /* implied cookie-ack.. we must have lost the ack */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_THRESHOLD_LOGGING) { sctp_misc_ints(SCTP_THRESHOLD_CLEAR, stcb->asoc.overall_error_count, 0, SCTP_FROM_SCTP_INPUT, __LINE__); } stcb->asoc.overall_error_count = 0; sctp_handle_cookie_ack((struct sctp_cookie_ack_chunk *)ch, stcb, *netp); } process_control_chunks: while (IS_SCTP_CONTROL(ch)) { /* validate chunk length */ chk_length = ntohs(ch->chunk_length); SCTPDBG(SCTP_DEBUG_INPUT2, "sctp_process_control: processing a chunk type=%u, len=%u\n", ch->chunk_type, chk_length); SCTP_LTRACE_CHK(inp, stcb, ch->chunk_type, chk_length); if (chk_length < sizeof(*ch) || (*offset + (int)chk_length) > length) { *offset = length; if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } return (NULL); } SCTP_STAT_INCR_COUNTER64(sctps_incontrolchunks); /* * INIT-ACK only gets the init ack "header" portion only * because we don't have to process the peer's COOKIE. All * others get a complete chunk. */ if ((ch->chunk_type == SCTP_INITIATION_ACK) || (ch->chunk_type == SCTP_INITIATION)) { /* get an init-ack chunk */ ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, *offset, sizeof(struct sctp_init_ack_chunk), chunk_buf); if (ch == NULL) { *offset = length; if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } return (NULL); } } else { /* For cookies and all other chunks. */ if (chk_length > sizeof(chunk_buf)) { /* * use just the size of the chunk buffer so * the front part of our chunks fit in * contiguous space up to the chunk buffer * size (508 bytes). For chunks that need to * get more than that they must use the * sctp_m_getptr() function or other means * (e.g. know how to parse mbuf chains). * Cookies do this already. */ ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, *offset, (sizeof(chunk_buf) - 4), chunk_buf); if (ch == NULL) { *offset = length; if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } return (NULL); } } else { /* We can fit it all */ ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, *offset, chk_length, chunk_buf); if (ch == NULL) { SCTP_PRINTF("sctp_process_control: Can't get the all data....\n"); *offset = length; if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } return (NULL); } } } num_chunks++; /* Save off the last place we got a control from */ if (stcb != NULL) { if (((netp != NULL) && (*netp != NULL)) || (ch->chunk_type == SCTP_ASCONF)) { /* * allow last_control to be NULL if * ASCONF... ASCONF processing will find the * right net later */ if ((netp != NULL) && (*netp != NULL)) stcb->asoc.last_control_chunk_from = *netp; } } #ifdef SCTP_AUDITING_ENABLED sctp_audit_log(0xB0, ch->chunk_type); #endif /* check to see if this chunk required auth, but isn't */ if ((stcb != NULL) && (stcb->asoc.auth_supported == 1) && sctp_auth_is_required_chunk(ch->chunk_type, stcb->asoc.local_auth_chunks) && !stcb->asoc.authenticated) { /* "silently" ignore */ SCTP_STAT_INCR(sctps_recvauthmissing); goto next_chunk; } switch (ch->chunk_type) { case SCTP_INITIATION: SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_INIT\n"); /* The INIT chunk must be the only chunk. */ if ((num_chunks > 1) || (length - *offset > (int)SCTP_SIZE32(chk_length))) { /* RFC 4960 requires that no ABORT is sent */ *offset = length; if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } return (NULL); } /* Honor our resource limit. */ if (chk_length > SCTP_LARGEST_INIT_ACCEPTED) { op_err = sctp_generate_cause(SCTP_CAUSE_OUT_OF_RESC, ""); sctp_abort_association(inp, stcb, m, iphlen, src, dst, sh, op_err, mflowtype, mflowid, vrf_id, port); *offset = length; return (NULL); } sctp_handle_init(m, iphlen, *offset, src, dst, sh, (struct sctp_init_chunk *)ch, inp, stcb, *netp, &abort_no_unlock, mflowtype, mflowid, vrf_id, port); *offset = length; if ((!abort_no_unlock) && (locked_tcb)) { SCTP_TCB_UNLOCK(locked_tcb); } return (NULL); break; case SCTP_PAD_CHUNK: break; case SCTP_INITIATION_ACK: SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_INIT-ACK\n"); if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { /* We are not interested anymore */ if ((stcb) && (stcb->asoc.total_output_queue_size)) { ; } else { if ((locked_tcb != NULL) && (locked_tcb != stcb)) { /* Very unlikely */ SCTP_TCB_UNLOCK(locked_tcb); } *offset = length; if (stcb) { #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) so = SCTP_INP_SO(inp); atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); #endif (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_INPUT + SCTP_LOC_29); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif } return (NULL); } } /* The INIT-ACK chunk must be the only chunk. */ if ((num_chunks > 1) || (length - *offset > (int)SCTP_SIZE32(chk_length))) { *offset = length; if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } return (NULL); } if ((netp) && (*netp)) { ret = sctp_handle_init_ack(m, iphlen, *offset, src, dst, sh, (struct sctp_init_ack_chunk *)ch, stcb, *netp, &abort_no_unlock, mflowtype, mflowid, vrf_id); } else { ret = -1; } *offset = length; if (abort_no_unlock) { return (NULL); } /* * Special case, I must call the output routine to * get the cookie echoed */ if ((stcb != NULL) && (ret == 0)) { sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_CONTROL_PROC, SCTP_SO_NOT_LOCKED); } if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } return (NULL); break; case SCTP_SELECTIVE_ACK: { struct sctp_sack_chunk *sack; int abort_now = 0; uint32_t a_rwnd, cum_ack; uint16_t num_seg, num_dup; uint8_t flags; int offset_seg, offset_dup; SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_SACK\n"); SCTP_STAT_INCR(sctps_recvsacks); if (stcb == NULL) { SCTPDBG(SCTP_DEBUG_INDATA1, "No stcb when processing SACK chunk\n"); break; } if (chk_length < sizeof(struct sctp_sack_chunk)) { SCTPDBG(SCTP_DEBUG_INDATA1, "Bad size on SACK chunk, too small\n"); break; } if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_ACK_SENT) { /*- * If we have sent a shutdown-ack, we will pay no * attention to a sack sent in to us since * we don't care anymore. */ break; } sack = (struct sctp_sack_chunk *)ch; flags = ch->chunk_flags; cum_ack = ntohl(sack->sack.cum_tsn_ack); num_seg = ntohs(sack->sack.num_gap_ack_blks); num_dup = ntohs(sack->sack.num_dup_tsns); a_rwnd = (uint32_t) ntohl(sack->sack.a_rwnd); if (sizeof(struct sctp_sack_chunk) + num_seg * sizeof(struct sctp_gap_ack_block) + num_dup * sizeof(uint32_t) != chk_length) { SCTPDBG(SCTP_DEBUG_INDATA1, "Bad size of SACK chunk\n"); break; } offset_seg = *offset + sizeof(struct sctp_sack_chunk); offset_dup = offset_seg + num_seg * sizeof(struct sctp_gap_ack_block); SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_SACK process cum_ack:%x num_seg:%d a_rwnd:%d\n", cum_ack, num_seg, a_rwnd); stcb->asoc.seen_a_sack_this_pkt = 1; if ((stcb->asoc.pr_sctp_cnt == 0) && (num_seg == 0) && SCTP_TSN_GE(cum_ack, stcb->asoc.last_acked_seq) && (stcb->asoc.saw_sack_with_frags == 0) && (stcb->asoc.saw_sack_with_nr_frags == 0) && (!TAILQ_EMPTY(&stcb->asoc.sent_queue)) ) { /* * We have a SIMPLE sack having no * prior segments and data on sent * queue to be acked.. Use the * faster path sack processing. We * also allow window update sacks * with no missing segments to go * this way too. */ sctp_express_handle_sack(stcb, cum_ack, a_rwnd, &abort_now, ecne_seen); } else { if (netp && *netp) sctp_handle_sack(m, offset_seg, offset_dup, stcb, num_seg, 0, num_dup, &abort_now, flags, cum_ack, a_rwnd, ecne_seen); } if (abort_now) { /* ABORT signal from sack processing */ *offset = length; return (NULL); } if (TAILQ_EMPTY(&stcb->asoc.send_queue) && TAILQ_EMPTY(&stcb->asoc.sent_queue) && (stcb->asoc.stream_queue_cnt == 0)) { sctp_ulp_notify(SCTP_NOTIFY_SENDER_DRY, stcb, 0, NULL, SCTP_SO_NOT_LOCKED); } } break; /* * EY - nr_sack: If the received chunk is an * nr_sack chunk */ case SCTP_NR_SELECTIVE_ACK: { struct sctp_nr_sack_chunk *nr_sack; int abort_now = 0; uint32_t a_rwnd, cum_ack; uint16_t num_seg, num_nr_seg, num_dup; uint8_t flags; int offset_seg, offset_dup; SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_NR_SACK\n"); SCTP_STAT_INCR(sctps_recvsacks); if (stcb == NULL) { SCTPDBG(SCTP_DEBUG_INDATA1, "No stcb when processing NR-SACK chunk\n"); break; } if (stcb->asoc.nrsack_supported == 0) { goto unknown_chunk; } if (chk_length < sizeof(struct sctp_nr_sack_chunk)) { SCTPDBG(SCTP_DEBUG_INDATA1, "Bad size on NR-SACK chunk, too small\n"); break; } if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_ACK_SENT) { /*- * If we have sent a shutdown-ack, we will pay no * attention to a sack sent in to us since * we don't care anymore. */ break; } nr_sack = (struct sctp_nr_sack_chunk *)ch; flags = ch->chunk_flags; cum_ack = ntohl(nr_sack->nr_sack.cum_tsn_ack); num_seg = ntohs(nr_sack->nr_sack.num_gap_ack_blks); num_nr_seg = ntohs(nr_sack->nr_sack.num_nr_gap_ack_blks); num_dup = ntohs(nr_sack->nr_sack.num_dup_tsns); a_rwnd = (uint32_t) ntohl(nr_sack->nr_sack.a_rwnd); if (sizeof(struct sctp_nr_sack_chunk) + (num_seg + num_nr_seg) * sizeof(struct sctp_gap_ack_block) + num_dup * sizeof(uint32_t) != chk_length) { SCTPDBG(SCTP_DEBUG_INDATA1, "Bad size of NR_SACK chunk\n"); break; } offset_seg = *offset + sizeof(struct sctp_nr_sack_chunk); offset_dup = offset_seg + num_seg * sizeof(struct sctp_gap_ack_block); SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_NR_SACK process cum_ack:%x num_seg:%d a_rwnd:%d\n", cum_ack, num_seg, a_rwnd); stcb->asoc.seen_a_sack_this_pkt = 1; if ((stcb->asoc.pr_sctp_cnt == 0) && (num_seg == 0) && (num_nr_seg == 0) && SCTP_TSN_GE(cum_ack, stcb->asoc.last_acked_seq) && (stcb->asoc.saw_sack_with_frags == 0) && (stcb->asoc.saw_sack_with_nr_frags == 0) && (!TAILQ_EMPTY(&stcb->asoc.sent_queue))) { /* * We have a SIMPLE sack having no * prior segments and data on sent * queue to be acked. Use the faster * path sack processing. We also * allow window update sacks with no * missing segments to go this way * too. */ sctp_express_handle_sack(stcb, cum_ack, a_rwnd, &abort_now, ecne_seen); } else { if (netp && *netp) sctp_handle_sack(m, offset_seg, offset_dup, stcb, num_seg, num_nr_seg, num_dup, &abort_now, flags, cum_ack, a_rwnd, ecne_seen); } if (abort_now) { /* ABORT signal from sack processing */ *offset = length; return (NULL); } if (TAILQ_EMPTY(&stcb->asoc.send_queue) && TAILQ_EMPTY(&stcb->asoc.sent_queue) && (stcb->asoc.stream_queue_cnt == 0)) { sctp_ulp_notify(SCTP_NOTIFY_SENDER_DRY, stcb, 0, NULL, SCTP_SO_NOT_LOCKED); } } break; case SCTP_HEARTBEAT_REQUEST: SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_HEARTBEAT\n"); if ((stcb) && netp && *netp) { SCTP_STAT_INCR(sctps_recvheartbeat); sctp_send_heartbeat_ack(stcb, m, *offset, chk_length, *netp); /* He's alive so give him credit */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_THRESHOLD_LOGGING) { sctp_misc_ints(SCTP_THRESHOLD_CLEAR, stcb->asoc.overall_error_count, 0, SCTP_FROM_SCTP_INPUT, __LINE__); } stcb->asoc.overall_error_count = 0; } break; case SCTP_HEARTBEAT_ACK: SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_HEARTBEAT-ACK\n"); if ((stcb == NULL) || (chk_length != sizeof(struct sctp_heartbeat_chunk))) { /* Its not ours */ *offset = length; if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } return (NULL); } /* He's alive so give him credit */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_THRESHOLD_LOGGING) { sctp_misc_ints(SCTP_THRESHOLD_CLEAR, stcb->asoc.overall_error_count, 0, SCTP_FROM_SCTP_INPUT, __LINE__); } stcb->asoc.overall_error_count = 0; SCTP_STAT_INCR(sctps_recvheartbeatack); if (netp && *netp) sctp_handle_heartbeat_ack((struct sctp_heartbeat_chunk *)ch, stcb, *netp); break; case SCTP_ABORT_ASSOCIATION: SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_ABORT, stcb %p\n", (void *)stcb); if ((stcb) && netp && *netp) sctp_handle_abort((struct sctp_abort_chunk *)ch, stcb, *netp); *offset = length; return (NULL); break; case SCTP_SHUTDOWN: SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_SHUTDOWN, stcb %p\n", (void *)stcb); if ((stcb == NULL) || (chk_length != sizeof(struct sctp_shutdown_chunk))) { *offset = length; if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } return (NULL); } if (netp && *netp) { int abort_flag = 0; sctp_handle_shutdown((struct sctp_shutdown_chunk *)ch, stcb, *netp, &abort_flag); if (abort_flag) { *offset = length; return (NULL); } } break; case SCTP_SHUTDOWN_ACK: SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_SHUTDOWN-ACK, stcb %p\n", (void *)stcb); if ((stcb) && (netp) && (*netp)) sctp_handle_shutdown_ack((struct sctp_shutdown_ack_chunk *)ch, stcb, *netp); *offset = length; return (NULL); break; case SCTP_OPERATION_ERROR: SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_OP-ERR\n"); if ((stcb) && netp && *netp && sctp_handle_error(ch, stcb, *netp) < 0) { *offset = length; return (NULL); } break; case SCTP_COOKIE_ECHO: SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_COOKIE-ECHO, stcb %p\n", (void *)stcb); if ((stcb) && (stcb->asoc.total_output_queue_size)) { ; } else { if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { /* We are not interested anymore */ abend: if (stcb) { SCTP_TCB_UNLOCK(stcb); } *offset = length; return (NULL); } } /* * First are we accepting? We do this again here * since it is possible that a previous endpoint WAS * listening responded to a INIT-ACK and then * closed. We opened and bound.. and are now no * longer listening. */ if ((stcb == NULL) && (inp->sctp_socket->so_qlen >= inp->sctp_socket->so_qlimit)) { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && (SCTP_BASE_SYSCTL(sctp_abort_if_one_2_one_hits_limit))) { op_err = sctp_generate_cause(SCTP_CAUSE_OUT_OF_RESC, ""); sctp_abort_association(inp, stcb, m, iphlen, src, dst, sh, op_err, mflowtype, mflowid, vrf_id, port); } *offset = length; return (NULL); } else { struct mbuf *ret_buf; struct sctp_inpcb *linp; if (stcb) { linp = NULL; } else { linp = inp; } if (linp) { SCTP_ASOC_CREATE_LOCK(linp); if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) { SCTP_ASOC_CREATE_UNLOCK(linp); goto abend; } } if (netp) { ret_buf = sctp_handle_cookie_echo(m, iphlen, *offset, src, dst, sh, (struct sctp_cookie_echo_chunk *)ch, &inp, &stcb, netp, auth_skipped, auth_offset, auth_len, &locked_tcb, mflowtype, mflowid, vrf_id, port); } else { ret_buf = NULL; } if (linp) { SCTP_ASOC_CREATE_UNLOCK(linp); } if (ret_buf == NULL) { if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } SCTPDBG(SCTP_DEBUG_INPUT3, "GAK, null buffer\n"); *offset = length; return (NULL); } /* if AUTH skipped, see if it verified... */ if (auth_skipped) { got_auth = 1; auth_skipped = 0; } if (!TAILQ_EMPTY(&stcb->asoc.sent_queue)) { /* * Restart the timer if we have * pending data */ struct sctp_tmit_chunk *chk; chk = TAILQ_FIRST(&stcb->asoc.sent_queue); sctp_timer_start(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, chk->whoTo); } } break; case SCTP_COOKIE_ACK: SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_COOKIE-ACK, stcb %p\n", (void *)stcb); if ((stcb == NULL) || chk_length != sizeof(struct sctp_cookie_ack_chunk)) { if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } return (NULL); } if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { /* We are not interested anymore */ if ((stcb) && (stcb->asoc.total_output_queue_size)) { ; } else if (stcb) { #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) so = SCTP_INP_SO(inp); atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); #endif (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_INPUT + SCTP_LOC_30); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif *offset = length; return (NULL); } } /* He's alive so give him credit */ if ((stcb) && netp && *netp) { if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_THRESHOLD_LOGGING) { sctp_misc_ints(SCTP_THRESHOLD_CLEAR, stcb->asoc.overall_error_count, 0, SCTP_FROM_SCTP_INPUT, __LINE__); } stcb->asoc.overall_error_count = 0; sctp_handle_cookie_ack((struct sctp_cookie_ack_chunk *)ch, stcb, *netp); } break; case SCTP_ECN_ECHO: SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_ECN-ECHO\n"); /* He's alive so give him credit */ if ((stcb == NULL) || (chk_length != sizeof(struct sctp_ecne_chunk))) { /* Its not ours */ if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } *offset = length; return (NULL); } if (stcb) { if (stcb->asoc.ecn_supported == 0) { goto unknown_chunk; } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_THRESHOLD_LOGGING) { sctp_misc_ints(SCTP_THRESHOLD_CLEAR, stcb->asoc.overall_error_count, 0, SCTP_FROM_SCTP_INPUT, __LINE__); } stcb->asoc.overall_error_count = 0; sctp_handle_ecn_echo((struct sctp_ecne_chunk *)ch, stcb); ecne_seen = 1; } break; case SCTP_ECN_CWR: SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_ECN-CWR\n"); /* He's alive so give him credit */ if ((stcb == NULL) || (chk_length != sizeof(struct sctp_cwr_chunk))) { /* Its not ours */ if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } *offset = length; return (NULL); } if (stcb) { if (stcb->asoc.ecn_supported == 0) { goto unknown_chunk; } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_THRESHOLD_LOGGING) { sctp_misc_ints(SCTP_THRESHOLD_CLEAR, stcb->asoc.overall_error_count, 0, SCTP_FROM_SCTP_INPUT, __LINE__); } stcb->asoc.overall_error_count = 0; sctp_handle_ecn_cwr((struct sctp_cwr_chunk *)ch, stcb, *netp); } break; case SCTP_SHUTDOWN_COMPLETE: SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_SHUTDOWN-COMPLETE, stcb %p\n", (void *)stcb); /* must be first and only chunk */ if ((num_chunks > 1) || (length - *offset > (int)SCTP_SIZE32(chk_length))) { *offset = length; if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } return (NULL); } if ((stcb) && netp && *netp) { sctp_handle_shutdown_complete((struct sctp_shutdown_complete_chunk *)ch, stcb, *netp); } *offset = length; return (NULL); break; case SCTP_ASCONF: SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_ASCONF\n"); /* He's alive so give him credit */ if (stcb) { if (stcb->asoc.asconf_supported == 0) { goto unknown_chunk; } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_THRESHOLD_LOGGING) { sctp_misc_ints(SCTP_THRESHOLD_CLEAR, stcb->asoc.overall_error_count, 0, SCTP_FROM_SCTP_INPUT, __LINE__); } stcb->asoc.overall_error_count = 0; sctp_handle_asconf(m, *offset, src, (struct sctp_asconf_chunk *)ch, stcb, asconf_cnt == 0); asconf_cnt++; } break; case SCTP_ASCONF_ACK: SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_ASCONF-ACK\n"); if (chk_length < sizeof(struct sctp_asconf_ack_chunk)) { /* Its not ours */ if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } *offset = length; return (NULL); } if ((stcb) && netp && *netp) { if (stcb->asoc.asconf_supported == 0) { goto unknown_chunk; } /* He's alive so give him credit */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_THRESHOLD_LOGGING) { sctp_misc_ints(SCTP_THRESHOLD_CLEAR, stcb->asoc.overall_error_count, 0, SCTP_FROM_SCTP_INPUT, __LINE__); } stcb->asoc.overall_error_count = 0; sctp_handle_asconf_ack(m, *offset, (struct sctp_asconf_ack_chunk *)ch, stcb, *netp, &abort_no_unlock); if (abort_no_unlock) return (NULL); } break; case SCTP_FORWARD_CUM_TSN: + case SCTP_IFORWARD_CUM_TSN: SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_FWD-TSN\n"); if (chk_length < sizeof(struct sctp_forward_tsn_chunk)) { /* Its not ours */ if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } *offset = length; return (NULL); } /* He's alive so give him credit */ if (stcb) { int abort_flag = 0; if (stcb->asoc.prsctp_supported == 0) { goto unknown_chunk; } stcb->asoc.overall_error_count = 0; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_THRESHOLD_LOGGING) { sctp_misc_ints(SCTP_THRESHOLD_CLEAR, stcb->asoc.overall_error_count, 0, SCTP_FROM_SCTP_INPUT, __LINE__); } *fwd_tsn_seen = 1; if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { /* We are not interested anymore */ #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) so = SCTP_INP_SO(inp); atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); #endif (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_INPUT + SCTP_LOC_31); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif *offset = length; return (NULL); } sctp_handle_forward_tsn(stcb, (struct sctp_forward_tsn_chunk *)ch, &abort_flag, m, *offset); if (abort_flag) { *offset = length; return (NULL); } else { if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_THRESHOLD_LOGGING) { sctp_misc_ints(SCTP_THRESHOLD_CLEAR, stcb->asoc.overall_error_count, 0, SCTP_FROM_SCTP_INPUT, __LINE__); } stcb->asoc.overall_error_count = 0; } } break; case SCTP_STREAM_RESET: SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_STREAM_RESET\n"); if (((stcb == NULL) || (ch == NULL) || (chk_length < sizeof(struct sctp_stream_reset_tsn_req)))) { /* Its not ours */ if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } *offset = length; return (NULL); } if (stcb->asoc.reconfig_supported == 0) { goto unknown_chunk; } if (sctp_handle_stream_reset(stcb, m, *offset, ch)) { /* stop processing */ *offset = length; return (NULL); } break; case SCTP_PACKET_DROPPED: SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_PACKET_DROPPED\n"); /* re-get it all please */ if (chk_length < sizeof(struct sctp_pktdrop_chunk)) { /* Its not ours */ if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } *offset = length; return (NULL); } if (ch && (stcb) && netp && (*netp)) { if (stcb->asoc.pktdrop_supported == 0) { goto unknown_chunk; } sctp_handle_packet_dropped((struct sctp_pktdrop_chunk *)ch, stcb, *netp, min(chk_length, (sizeof(chunk_buf) - 4))); } break; case SCTP_AUTHENTICATION: SCTPDBG(SCTP_DEBUG_INPUT3, "SCTP_AUTHENTICATION\n"); if (stcb == NULL) { /* save the first AUTH for later processing */ if (auth_skipped == 0) { auth_offset = *offset; auth_len = chk_length; auth_skipped = 1; } /* skip this chunk (temporarily) */ goto next_chunk; } if (stcb->asoc.auth_supported == 0) { goto unknown_chunk; } if ((chk_length < (sizeof(struct sctp_auth_chunk))) || (chk_length > (sizeof(struct sctp_auth_chunk) + SCTP_AUTH_DIGEST_LEN_MAX))) { /* Its not ours */ if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } *offset = length; return (NULL); } if (got_auth == 1) { /* skip this chunk... it's already auth'd */ goto next_chunk; } got_auth = 1; if ((ch == NULL) || sctp_handle_auth(stcb, (struct sctp_auth_chunk *)ch, m, *offset)) { /* auth HMAC failed so dump the packet */ *offset = length; return (stcb); } else { /* remaining chunks are HMAC checked */ stcb->asoc.authenticated = 1; } break; default: unknown_chunk: /* it's an unknown chunk! */ if ((ch->chunk_type & 0x40) && (stcb != NULL)) { struct sctp_gen_error_cause *cause; int len; op_err = sctp_get_mbuf_for_msg(sizeof(struct sctp_gen_error_cause), 0, M_NOWAIT, 1, MT_DATA); if (op_err != NULL) { len = min(SCTP_SIZE32(chk_length), (uint32_t) (length - *offset)); cause = mtod(op_err, struct sctp_gen_error_cause *); cause->code = htons(SCTP_CAUSE_UNRECOG_CHUNK); cause->length = htons((uint16_t) (len + sizeof(struct sctp_gen_error_cause))); SCTP_BUF_LEN(op_err) = sizeof(struct sctp_gen_error_cause); SCTP_BUF_NEXT(op_err) = SCTP_M_COPYM(m, *offset, len, M_NOWAIT); if (SCTP_BUF_NEXT(op_err) != NULL) { #ifdef SCTP_MBUF_LOGGING if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) { sctp_log_mbc(SCTP_BUF_NEXT(op_err), SCTP_MBUF_ICOPY); } #endif sctp_queue_op_err(stcb, op_err); } else { sctp_m_freem(op_err); } } } if ((ch->chunk_type & 0x80) == 0) { /* discard this packet */ *offset = length; return (stcb); } /* else skip this bad chunk and continue... */ break; } /* switch (ch->chunk_type) */ next_chunk: /* get the next chunk */ *offset += SCTP_SIZE32(chk_length); if (*offset >= length) { /* no more data left in the mbuf chain */ break; } ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, *offset, sizeof(struct sctp_chunkhdr), chunk_buf); if (ch == NULL) { if (locked_tcb) { SCTP_TCB_UNLOCK(locked_tcb); } *offset = length; return (NULL); } } /* while */ if (asconf_cnt > 0 && stcb != NULL) { sctp_send_asconf_ack(stcb); } return (stcb); } /* * common input chunk processing (v4 and v6) */ void sctp_common_input_processing(struct mbuf **mm, int iphlen, int offset, int length, struct sockaddr *src, struct sockaddr *dst, struct sctphdr *sh, struct sctp_chunkhdr *ch, #if !defined(SCTP_WITH_NO_CSUM) uint8_t compute_crc, #endif uint8_t ecn_bits, uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum, uint32_t vrf_id, uint16_t port) { uint32_t high_tsn; int fwd_tsn_seen = 0, data_processed = 0; struct mbuf *m = *mm, *op_err; char msg[SCTP_DIAG_INFO_LEN]; int un_sent; int cnt_ctrl_ready = 0; struct sctp_inpcb *inp = NULL, *inp_decr = NULL; struct sctp_tcb *stcb = NULL; struct sctp_nets *net = NULL; SCTP_STAT_INCR(sctps_recvdatagrams); #ifdef SCTP_AUDITING_ENABLED sctp_audit_log(0xE0, 1); sctp_auditing(0, inp, stcb, net); #endif #if !defined(SCTP_WITH_NO_CSUM) if (compute_crc != 0) { uint32_t check, calc_check; check = sh->checksum; sh->checksum = 0; calc_check = sctp_calculate_cksum(m, iphlen); sh->checksum = check; if (calc_check != check) { SCTPDBG(SCTP_DEBUG_INPUT1, "Bad CSUM on SCTP packet calc_check:%x check:%x m:%p mlen:%d iphlen:%d\n", calc_check, check, (void *)m, length, iphlen); stcb = sctp_findassociation_addr(m, offset, src, dst, sh, ch, &inp, &net, vrf_id); #if defined(INET) || defined(INET6) if ((ch->chunk_type != SCTP_INITIATION) && (net != NULL) && (net->port != port)) { if (net->port == 0) { /* UDP encapsulation turned on. */ net->mtu -= sizeof(struct udphdr); if (stcb->asoc.smallest_mtu > net->mtu) { sctp_pathmtu_adjustment(stcb, net->mtu); } } else if (port == 0) { /* UDP encapsulation turned off. */ net->mtu += sizeof(struct udphdr); /* XXX Update smallest_mtu */ } net->port = port; } #endif if (net != NULL) { net->flowtype = mflowtype; net->flowid = mflowid; } if ((inp != NULL) && (stcb != NULL)) { sctp_send_packet_dropped(stcb, net, m, length, iphlen, 1); sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_INPUT_ERROR, SCTP_SO_NOT_LOCKED); } else if ((inp != NULL) && (stcb == NULL)) { inp_decr = inp; } SCTP_STAT_INCR(sctps_badsum); SCTP_STAT_INCR_COUNTER32(sctps_checksumerrors); goto out; } } #endif /* Destination port of 0 is illegal, based on RFC4960. */ if (sh->dest_port == 0) { SCTP_STAT_INCR(sctps_hdrops); goto out; } stcb = sctp_findassociation_addr(m, offset, src, dst, sh, ch, &inp, &net, vrf_id); #if defined(INET) || defined(INET6) if ((ch->chunk_type != SCTP_INITIATION) && (net != NULL) && (net->port != port)) { if (net->port == 0) { /* UDP encapsulation turned on. */ net->mtu -= sizeof(struct udphdr); if (stcb->asoc.smallest_mtu > net->mtu) { sctp_pathmtu_adjustment(stcb, net->mtu); } } else if (port == 0) { /* UDP encapsulation turned off. */ net->mtu += sizeof(struct udphdr); /* XXX Update smallest_mtu */ } net->port = port; } #endif if (net != NULL) { net->flowtype = mflowtype; net->flowid = mflowid; } if (inp == NULL) { SCTP_STAT_INCR(sctps_noport); if (badport_bandlim(BANDLIM_SCTP_OOTB) < 0) { goto out; } if (ch->chunk_type == SCTP_SHUTDOWN_ACK) { sctp_send_shutdown_complete2(src, dst, sh, mflowtype, mflowid, fibnum, vrf_id, port); goto out; } if (ch->chunk_type == SCTP_SHUTDOWN_COMPLETE) { goto out; } if (ch->chunk_type != SCTP_ABORT_ASSOCIATION) { if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) || ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) && (ch->chunk_type != SCTP_INIT))) { op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), "Out of the blue"); sctp_send_abort(m, iphlen, src, dst, sh, 0, op_err, mflowtype, mflowid, fibnum, vrf_id, port); } } goto out; } else if (stcb == NULL) { inp_decr = inp; } #ifdef IPSEC /*- * I very much doubt any of the IPSEC stuff will work but I have no * idea, so I will leave it in place. */ if (inp != NULL) { switch (dst->sa_family) { #ifdef INET case AF_INET: if (ipsec4_in_reject(m, &inp->ip_inp.inp)) { SCTP_STAT_INCR(sctps_hdrops); goto out; } break; #endif #ifdef INET6 case AF_INET6: if (ipsec6_in_reject(m, &inp->ip_inp.inp)) { SCTP_STAT_INCR(sctps_hdrops); goto out; } break; #endif default: break; } } #endif SCTPDBG(SCTP_DEBUG_INPUT1, "Ok, Common input processing called, m:%p iphlen:%d offset:%d length:%d stcb:%p\n", (void *)m, iphlen, offset, length, (void *)stcb); if (stcb) { /* always clear this before beginning a packet */ stcb->asoc.authenticated = 0; stcb->asoc.seen_a_sack_this_pkt = 0; SCTPDBG(SCTP_DEBUG_INPUT1, "stcb:%p state:%x\n", (void *)stcb, stcb->asoc.state); if ((stcb->asoc.state & SCTP_STATE_WAS_ABORTED) || (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) { /*- * If we hit here, we had a ref count * up when the assoc was aborted and the * timer is clearing out the assoc, we should * NOT respond to any packet.. its OOTB. */ SCTP_TCB_UNLOCK(stcb); stcb = NULL; snprintf(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__); op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), msg); sctp_handle_ootb(m, iphlen, offset, src, dst, sh, inp, op_err, mflowtype, mflowid, inp->fibnum, vrf_id, port); goto out; } } if (IS_SCTP_CONTROL(ch)) { /* process the control portion of the SCTP packet */ /* sa_ignore NO_NULL_CHK */ stcb = sctp_process_control(m, iphlen, &offset, length, src, dst, sh, ch, inp, stcb, &net, &fwd_tsn_seen, mflowtype, mflowid, fibnum, vrf_id, port); if (stcb) { /* * This covers us if the cookie-echo was there and * it changes our INP. */ inp = stcb->sctp_ep; #if defined(INET) || defined(INET6) if ((ch->chunk_type != SCTP_INITIATION) && (net != NULL) && (net->port != port)) { if (net->port == 0) { /* UDP encapsulation turned on. */ net->mtu -= sizeof(struct udphdr); if (stcb->asoc.smallest_mtu > net->mtu) { sctp_pathmtu_adjustment(stcb, net->mtu); } } else if (port == 0) { /* UDP encapsulation turned off. */ net->mtu += sizeof(struct udphdr); /* XXX Update smallest_mtu */ } net->port = port; } #endif } } else { /* * no control chunks, so pre-process DATA chunks (these * checks are taken care of by control processing) */ /* * if DATA only packet, and auth is required, then punt... * can't have authenticated without any AUTH (control) * chunks */ if ((stcb != NULL) && (stcb->asoc.auth_supported == 1) && sctp_auth_is_required_chunk(SCTP_DATA, stcb->asoc.local_auth_chunks)) { /* "silently" ignore */ SCTP_STAT_INCR(sctps_recvauthmissing); goto out; } if (stcb == NULL) { /* out of the blue DATA chunk */ snprintf(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__); op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), msg); sctp_handle_ootb(m, iphlen, offset, src, dst, sh, inp, op_err, mflowtype, mflowid, fibnum, vrf_id, port); goto out; } if (stcb->asoc.my_vtag != ntohl(sh->v_tag)) { /* v_tag mismatch! */ SCTP_STAT_INCR(sctps_badvtag); goto out; } } if (stcb == NULL) { /* * no valid TCB for this packet, or we found it's a bad * packet while processing control, or we're done with this * packet (done or skip rest of data), so we drop it... */ goto out; } /* * DATA chunk processing */ /* plow through the data chunks while length > offset */ /* * Rest should be DATA only. Check authentication state if AUTH for * DATA is required. */ if ((length > offset) && (stcb != NULL) && (stcb->asoc.auth_supported == 1) && sctp_auth_is_required_chunk(SCTP_DATA, stcb->asoc.local_auth_chunks) && !stcb->asoc.authenticated) { /* "silently" ignore */ SCTP_STAT_INCR(sctps_recvauthmissing); SCTPDBG(SCTP_DEBUG_AUTH1, "Data chunk requires AUTH, skipped\n"); goto trigger_send; } if (length > offset) { int retval; /* * First check to make sure our state is correct. We would * not get here unless we really did have a tag, so we don't * abort if this happens, just dump the chunk silently. */ switch (SCTP_GET_STATE(&stcb->asoc)) { case SCTP_STATE_COOKIE_ECHOED: /* * we consider data with valid tags in this state * shows us the cookie-ack was lost. Imply it was * there. */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_THRESHOLD_LOGGING) { sctp_misc_ints(SCTP_THRESHOLD_CLEAR, stcb->asoc.overall_error_count, 0, SCTP_FROM_SCTP_INPUT, __LINE__); } stcb->asoc.overall_error_count = 0; sctp_handle_cookie_ack((struct sctp_cookie_ack_chunk *)ch, stcb, net); break; case SCTP_STATE_COOKIE_WAIT: /* * We consider OOTB any data sent during asoc setup. */ snprintf(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__); op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), msg); sctp_handle_ootb(m, iphlen, offset, src, dst, sh, inp, op_err, mflowtype, mflowid, inp->fibnum, vrf_id, port); goto out; /* sa_ignore NOTREACHED */ break; case SCTP_STATE_EMPTY: /* should not happen */ case SCTP_STATE_INUSE: /* should not happen */ case SCTP_STATE_SHUTDOWN_RECEIVED: /* This is a peer error */ case SCTP_STATE_SHUTDOWN_ACK_SENT: default: goto out; /* sa_ignore NOTREACHED */ break; case SCTP_STATE_OPEN: case SCTP_STATE_SHUTDOWN_SENT: break; } /* plow through the data chunks while length > offset */ retval = sctp_process_data(mm, iphlen, &offset, length, inp, stcb, net, &high_tsn); if (retval == 2) { /* * The association aborted, NO UNLOCK needed since * the association is destroyed. */ stcb = NULL; goto out; } data_processed = 1; /* * Anything important needs to have been m_copy'ed in * process_data */ } /* take care of ecn */ if ((data_processed == 1) && (stcb->asoc.ecn_supported == 1) && ((ecn_bits & SCTP_CE_BITS) == SCTP_CE_BITS)) { /* Yep, we need to add a ECNE */ sctp_send_ecn_echo(stcb, net, high_tsn); } if ((data_processed == 0) && (fwd_tsn_seen)) { int was_a_gap; uint32_t highest_tsn; if (SCTP_TSN_GT(stcb->asoc.highest_tsn_inside_nr_map, stcb->asoc.highest_tsn_inside_map)) { highest_tsn = stcb->asoc.highest_tsn_inside_nr_map; } else { highest_tsn = stcb->asoc.highest_tsn_inside_map; } was_a_gap = SCTP_TSN_GT(highest_tsn, stcb->asoc.cumulative_tsn); stcb->asoc.send_sack = 1; sctp_sack_check(stcb, was_a_gap); } else if (fwd_tsn_seen) { stcb->asoc.send_sack = 1; } /* trigger send of any chunks in queue... */ trigger_send: #ifdef SCTP_AUDITING_ENABLED sctp_audit_log(0xE0, 2); sctp_auditing(1, inp, stcb, net); #endif SCTPDBG(SCTP_DEBUG_INPUT1, "Check for chunk output prw:%d tqe:%d tf=%d\n", stcb->asoc.peers_rwnd, TAILQ_EMPTY(&stcb->asoc.control_send_queue), stcb->asoc.total_flight); un_sent = (stcb->asoc.total_output_queue_size - stcb->asoc.total_flight); if (!TAILQ_EMPTY(&stcb->asoc.control_send_queue)) { cnt_ctrl_ready = stcb->asoc.ctrl_queue_cnt - stcb->asoc.ecn_echo_cnt_onq; } if (!TAILQ_EMPTY(&stcb->asoc.asconf_send_queue) || cnt_ctrl_ready || stcb->asoc.trigger_reset || ((un_sent) && (stcb->asoc.peers_rwnd > 0 || (stcb->asoc.peers_rwnd <= 0 && stcb->asoc.total_flight == 0)))) { SCTPDBG(SCTP_DEBUG_INPUT3, "Calling chunk OUTPUT\n"); sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_CONTROL_PROC, SCTP_SO_NOT_LOCKED); SCTPDBG(SCTP_DEBUG_INPUT3, "chunk OUTPUT returns\n"); } #ifdef SCTP_AUDITING_ENABLED sctp_audit_log(0xE0, 3); sctp_auditing(2, inp, stcb, net); #endif out: if (stcb != NULL) { SCTP_TCB_UNLOCK(stcb); } if (inp_decr != NULL) { /* reduce ref-count */ SCTP_INP_WLOCK(inp_decr); SCTP_INP_DECR_REF(inp_decr); SCTP_INP_WUNLOCK(inp_decr); } return; } #ifdef INET void sctp_input_with_port(struct mbuf *i_pak, int off, uint16_t port) { struct mbuf *m; int iphlen; uint32_t vrf_id = 0; uint8_t ecn_bits; struct sockaddr_in src, dst; struct ip *ip; struct sctphdr *sh; struct sctp_chunkhdr *ch; int length, offset; #if !defined(SCTP_WITH_NO_CSUM) uint8_t compute_crc; #endif uint32_t mflowid; uint8_t mflowtype; uint16_t fibnum; iphlen = off; if (SCTP_GET_PKT_VRFID(i_pak, vrf_id)) { SCTP_RELEASE_PKT(i_pak); return; } m = SCTP_HEADER_TO_CHAIN(i_pak); #ifdef SCTP_MBUF_LOGGING /* Log in any input mbufs */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) { sctp_log_mbc(m, SCTP_MBUF_INPUT); } #endif #ifdef SCTP_PACKET_LOGGING if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LAST_PACKET_TRACING) { sctp_packet_log(m); } #endif SCTPDBG(SCTP_DEBUG_CRCOFFLOAD, "sctp_input(): Packet of length %d received on %s with csum_flags 0x%b.\n", m->m_pkthdr.len, if_name(m->m_pkthdr.rcvif), (int)m->m_pkthdr.csum_flags, CSUM_BITS); mflowid = m->m_pkthdr.flowid; mflowtype = M_HASHTYPE_GET(m); fibnum = M_GETFIB(m); SCTP_STAT_INCR(sctps_recvpackets); SCTP_STAT_INCR_COUNTER64(sctps_inpackets); /* Get IP, SCTP, and first chunk header together in the first mbuf. */ offset = iphlen + sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr); if (SCTP_BUF_LEN(m) < offset) { if ((m = m_pullup(m, offset)) == NULL) { SCTP_STAT_INCR(sctps_hdrops); return; } } ip = mtod(m, struct ip *); sh = (struct sctphdr *)((caddr_t)ip + iphlen); ch = (struct sctp_chunkhdr *)((caddr_t)sh + sizeof(struct sctphdr)); offset -= sizeof(struct sctp_chunkhdr); memset(&src, 0, sizeof(struct sockaddr_in)); src.sin_family = AF_INET; src.sin_len = sizeof(struct sockaddr_in); src.sin_port = sh->src_port; src.sin_addr = ip->ip_src; memset(&dst, 0, sizeof(struct sockaddr_in)); dst.sin_family = AF_INET; dst.sin_len = sizeof(struct sockaddr_in); dst.sin_port = sh->dest_port; dst.sin_addr = ip->ip_dst; length = ntohs(ip->ip_len); /* Validate mbuf chain length with IP payload length. */ if (SCTP_HEADER_LEN(m) != length) { SCTPDBG(SCTP_DEBUG_INPUT1, "sctp_input() length:%d reported length:%d\n", length, SCTP_HEADER_LEN(m)); SCTP_STAT_INCR(sctps_hdrops); goto out; } /* SCTP does not allow broadcasts or multicasts */ if (IN_MULTICAST(ntohl(dst.sin_addr.s_addr))) { goto out; } if (SCTP_IS_IT_BROADCAST(dst.sin_addr, m)) { goto out; } ecn_bits = ip->ip_tos; #if defined(SCTP_WITH_NO_CSUM) SCTP_STAT_INCR(sctps_recvnocrc); #else if (m->m_pkthdr.csum_flags & CSUM_SCTP_VALID) { SCTP_STAT_INCR(sctps_recvhwcrc); compute_crc = 0; } else { SCTP_STAT_INCR(sctps_recvswcrc); compute_crc = 1; } #endif sctp_common_input_processing(&m, iphlen, offset, length, (struct sockaddr *)&src, (struct sockaddr *)&dst, sh, ch, #if !defined(SCTP_WITH_NO_CSUM) compute_crc, #endif ecn_bits, mflowtype, mflowid, fibnum, vrf_id, port); out: if (m) { sctp_m_freem(m); } return; } #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP) extern int *sctp_cpuarry; #endif int sctp_input(struct mbuf **mp, int *offp, int proto SCTP_UNUSED) { struct mbuf *m; int off; m = *mp; off = *offp; #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP) if (mp_ncpus > 1) { struct ip *ip; struct sctphdr *sh; int offset; int cpu_to_use; uint32_t flowid, tag; if (M_HASHTYPE_GET(m) != M_HASHTYPE_NONE) { flowid = m->m_pkthdr.flowid; } else { /* * No flow id built by lower layers fix it so we * create one. */ offset = off + sizeof(struct sctphdr); if (SCTP_BUF_LEN(m) < offset) { if ((m = m_pullup(m, offset)) == NULL) { SCTP_STAT_INCR(sctps_hdrops); return (IPPROTO_DONE); } } ip = mtod(m, struct ip *); sh = (struct sctphdr *)((caddr_t)ip + off); tag = htonl(sh->v_tag); flowid = tag ^ ntohs(sh->dest_port) ^ ntohs(sh->src_port); m->m_pkthdr.flowid = flowid; M_HASHTYPE_SET(m, M_HASHTYPE_OPAQUE); } cpu_to_use = sctp_cpuarry[flowid % mp_ncpus]; sctp_queue_to_mcore(m, off, cpu_to_use); return (IPPROTO_DONE); } #endif sctp_input_with_port(m, off, 0); return (IPPROTO_DONE); } #endif Index: head/sys/netinet/sctp_os_bsd.h =================================================================== --- head/sys/netinet/sctp_os_bsd.h (revision 297661) +++ head/sys/netinet/sctp_os_bsd.h (revision 297662) @@ -1,497 +1,497 @@ /*- * Copyright (c) 2006-2007, by Cisco Systems, Inc. All rights reserved. * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * a) Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * b) Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the distribution. * * c) Neither the name of Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #ifndef _NETINET_SCTP_OS_BSD_H_ #define _NETINET_SCTP_OS_BSD_H_ /* * includes */ #include "opt_ipsec.h" #include "opt_compat.h" #include "opt_inet6.h" #include "opt_inet.h" #include "opt_sctp.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef IPSEC #include #include #endif /* IPSEC */ #ifdef INET6 #include #ifdef IPSEC #include #endif #include #include #include #include #include #include #endif /* INET6 */ #include #include #include #ifndef in6pcb #define in6pcb inpcb #endif /* Declare all the malloc names for all the various mallocs */ MALLOC_DECLARE(SCTP_M_MAP); MALLOC_DECLARE(SCTP_M_STRMI); MALLOC_DECLARE(SCTP_M_STRMO); MALLOC_DECLARE(SCTP_M_ASC_ADDR); MALLOC_DECLARE(SCTP_M_ASC_IT); MALLOC_DECLARE(SCTP_M_AUTH_CL); MALLOC_DECLARE(SCTP_M_AUTH_KY); MALLOC_DECLARE(SCTP_M_AUTH_HL); MALLOC_DECLARE(SCTP_M_AUTH_IF); MALLOC_DECLARE(SCTP_M_STRESET); MALLOC_DECLARE(SCTP_M_CMSG); MALLOC_DECLARE(SCTP_M_COPYAL); MALLOC_DECLARE(SCTP_M_VRF); MALLOC_DECLARE(SCTP_M_IFA); MALLOC_DECLARE(SCTP_M_IFN); MALLOC_DECLARE(SCTP_M_TIMW); MALLOC_DECLARE(SCTP_M_MVRF); MALLOC_DECLARE(SCTP_M_ITER); MALLOC_DECLARE(SCTP_M_SOCKOPT); MALLOC_DECLARE(SCTP_M_MCORE); #if defined(SCTP_LOCAL_TRACE_BUF) #define SCTP_GET_CYCLECOUNT get_cyclecount() #define SCTP_CTR6 sctp_log_trace #else #define SCTP_CTR6 CTR6 #endif /* * Macros to expand out globals defined by various modules * to either a real global or a virtualized instance of one, * depending on whether VIMAGE is defined. */ /* then define the macro(s) that hook into the vimage macros */ #define MODULE_GLOBAL(__SYMBOL) V_##__SYMBOL #define V_system_base_info VNET(system_base_info) #define SCTP_BASE_INFO(__m) V_system_base_info.sctppcbinfo.__m #define SCTP_BASE_STATS V_system_base_info.sctpstat #define SCTP_BASE_STAT(__m) V_system_base_info.sctpstat.__m #define SCTP_BASE_SYSCTL(__m) V_system_base_info.sctpsysctl.__m #define SCTP_BASE_VAR(__m) V_system_base_info.__m #define SCTP_PRINTF(params...) printf(params) #if defined(SCTP_DEBUG) #define SCTPDBG(level, params...) \ { \ do { \ if (SCTP_BASE_SYSCTL(sctp_debug_on) & level ) { \ SCTP_PRINTF(params); \ } \ } while (0); \ } #define SCTPDBG_ADDR(level, addr) \ { \ do { \ if (SCTP_BASE_SYSCTL(sctp_debug_on) & level ) { \ sctp_print_address(addr); \ } \ } while (0); \ } #else #define SCTPDBG(level, params...) #define SCTPDBG_ADDR(level, addr) #endif #ifdef SCTP_LTRACE_CHUNKS #define SCTP_LTRACE_CHK(a, b, c, d) if(SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LTRACE_CHUNK_ENABLE) SCTP_CTR6(KTR_SUBSYS, "SCTP:%d[%d]:%x-%x-%x-%x", SCTP_LOG_CHUNK_PROC, 0, a, b, c, d) #else #define SCTP_LTRACE_CHK(a, b, c, d) #endif #ifdef SCTP_LTRACE_ERRORS #define SCTP_LTRACE_ERR_RET_PKT(m, inp, stcb, net, file, err) \ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LTRACE_ERROR_ENABLE) \ SCTP_PRINTF("mbuf:%p inp:%p stcb:%p net:%p file:%x line:%d error:%d\n", \ m, inp, stcb, net, file, __LINE__, err); #define SCTP_LTRACE_ERR_RET(inp, stcb, net, file, err) \ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LTRACE_ERROR_ENABLE) \ SCTP_PRINTF("inp:%p stcb:%p net:%p file:%x line:%d error:%d\n", \ inp, stcb, net, file, __LINE__, err); #else #define SCTP_LTRACE_ERR_RET_PKT(m, inp, stcb, net, file, err) #define SCTP_LTRACE_ERR_RET(inp, stcb, net, file, err) #endif /* * Local address and interface list handling */ #define SCTP_MAX_VRF_ID 0 #define SCTP_SIZE_OF_VRF_HASH 3 #define SCTP_IFNAMSIZ IFNAMSIZ #define SCTP_DEFAULT_VRFID 0 #define SCTP_VRF_ADDR_HASH_SIZE 16 #define SCTP_VRF_IFN_HASH_SIZE 3 #define SCTP_INIT_VRF_TABLEID(vrf) #define SCTP_IFN_IS_IFT_LOOP(ifn) ((ifn)->ifn_type == IFT_LOOP) #define SCTP_ROUTE_IS_REAL_LOOP(ro) ((ro)->ro_rt && (ro)->ro_rt->rt_ifa && (ro)->ro_rt->rt_ifa->ifa_ifp && (ro)->ro_rt->rt_ifa->ifa_ifp->if_type == IFT_LOOP) /* * Access to IFN's to help with src-addr-selection */ /* This could return VOID if the index works but for BSD we provide both. */ #define SCTP_GET_IFN_VOID_FROM_ROUTE(ro) (void *)ro->ro_rt->rt_ifp #define SCTP_GET_IF_INDEX_FROM_ROUTE(ro) (ro)->ro_rt->rt_ifp->if_index #define SCTP_ROUTE_HAS_VALID_IFN(ro) ((ro)->ro_rt && (ro)->ro_rt->rt_ifp) /* * general memory allocation */ #define SCTP_MALLOC(var, type, size, name) \ do { \ var = (type)malloc(size, name, M_NOWAIT); \ } while (0) #define SCTP_FREE(var, type) free(var, type) #define SCTP_MALLOC_SONAME(var, type, size) \ do { \ var = (type)malloc(size, M_SONAME, M_WAITOK | M_ZERO); \ } while (0) #define SCTP_FREE_SONAME(var) free(var, M_SONAME) #define SCTP_PROCESS_STRUCT struct proc * /* * zone allocation functions */ #include /* SCTP_ZONE_INIT: initialize the zone */ typedef struct uma_zone *sctp_zone_t; #define SCTP_ZONE_INIT(zone, name, size, number) { \ zone = uma_zcreate(name, size, NULL, NULL, NULL, NULL, UMA_ALIGN_PTR,\ 0); \ uma_zone_set_max(zone, number); \ } #define SCTP_ZONE_DESTROY(zone) uma_zdestroy(zone) /* SCTP_ZONE_GET: allocate element from the zone */ #define SCTP_ZONE_GET(zone, type) \ (type *)uma_zalloc(zone, M_NOWAIT); /* SCTP_ZONE_FREE: free element from the zone */ #define SCTP_ZONE_FREE(zone, element) \ uma_zfree(zone, element); #define SCTP_HASH_INIT(size, hashmark) hashinit_flags(size, M_PCB, hashmark, HASH_NOWAIT) #define SCTP_HASH_FREE(table, hashmark) hashdestroy(table, M_PCB, hashmark) #define SCTP_M_COPYM m_copym /* * timers */ #include typedef struct callout sctp_os_timer_t; #define SCTP_OS_TIMER_INIT(tmr) callout_init(tmr, 1) #define SCTP_OS_TIMER_START callout_reset #define SCTP_OS_TIMER_STOP callout_stop #define SCTP_OS_TIMER_STOP_DRAIN callout_drain #define SCTP_OS_TIMER_PENDING callout_pending #define SCTP_OS_TIMER_ACTIVE callout_active #define SCTP_OS_TIMER_DEACTIVATE callout_deactivate #define sctp_get_tick_count() (ticks) #define SCTP_UNUSED __attribute__((unused)) /* * Functions */ /* Mbuf manipulation and access macros */ #define SCTP_BUF_LEN(m) (m->m_len) #define SCTP_BUF_NEXT(m) (m->m_next) #define SCTP_BUF_NEXT_PKT(m) (m->m_nextpkt) #define SCTP_BUF_RESV_UF(m, size) m->m_data += size #define SCTP_BUF_AT(m, size) m->m_data + size #define SCTP_BUF_IS_EXTENDED(m) (m->m_flags & M_EXT) #define SCTP_BUF_SIZE M_SIZE #define SCTP_BUF_TYPE(m) (m->m_type) #define SCTP_BUF_RECVIF(m) (m->m_pkthdr.rcvif) #define SCTP_BUF_PREPEND M_PREPEND #define SCTP_ALIGN_TO_END(m, len) M_ALIGN(m, len) /* We make it so if you have up to 4 threads * writing based on the default size of * the packet log 65 k, that would be * 4 16k packets before we would hit * a problem. */ #define SCTP_PKTLOG_WRITERS_NEED_LOCK 3 /*************************/ /* MTU */ /*************************/ #define SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index, af) ((struct ifnet *)ifn)->if_mtu #define SCTP_GATHER_MTU_FROM_ROUTE(sctp_ifa, sa, rt) ((uint32_t)((rt != NULL) ? rt->rt_mtu : 0)) #define SCTP_GATHER_MTU_FROM_INTFC(sctp_ifn) ((sctp_ifn->ifn_p != NULL) ? ((struct ifnet *)(sctp_ifn->ifn_p))->if_mtu : 0) #define SCTP_SET_MTU_OF_ROUTE(sa, rt, mtu) do { \ if (rt != NULL) \ rt->rt_mtu = mtu; \ } while(0) /* (de-)register interface event notifications */ #define SCTP_REGISTER_INTERFACE(ifhandle, af) #define SCTP_DEREGISTER_INTERFACE(ifhandle, af) /*************************/ /* These are for logging */ /*************************/ /* return the base ext data pointer */ #define SCTP_BUF_EXTEND_BASE(m) (m->m_ext.ext_buf) /* return the refcnt of the data pointer */ #define SCTP_BUF_EXTEND_REFCNT(m) (*m->m_ext.ext_cnt) /* return any buffer related flags, this is * used beyond logging for apple only. */ #define SCTP_BUF_GET_FLAGS(m) (m->m_flags) /* For BSD this just accesses the M_PKTHDR length * so it operates on an mbuf with hdr flag. Other * O/S's may have separate packet header and mbuf * chain pointers.. thus the macro. */ #define SCTP_HEADER_TO_CHAIN(m) (m) #define SCTP_DETACH_HEADER_FROM_CHAIN(m) #define SCTP_HEADER_LEN(m) ((m)->m_pkthdr.len) #define SCTP_GET_HEADER_FOR_OUTPUT(o_pak) 0 #define SCTP_RELEASE_HEADER(m) #define SCTP_RELEASE_PKT(m) sctp_m_freem(m) #define SCTP_ENABLE_UDP_CSUM(m) do { \ m->m_pkthdr.csum_flags = CSUM_UDP; \ m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum); \ } while (0) #define SCTP_GET_PKT_VRFID(m, vrf_id) ((vrf_id = SCTP_DEFAULT_VRFID) != SCTP_DEFAULT_VRFID) /* Attach the chain of data into the sendable packet. */ #define SCTP_ATTACH_CHAIN(pak, m, packet_length) do { \ pak = m; \ pak->m_pkthdr.len = packet_length; \ } while(0) /* Other m_pkthdr type things */ #define SCTP_IS_IT_BROADCAST(dst, m) ((m->m_flags & M_PKTHDR) ? in_broadcast(dst, m->m_pkthdr.rcvif) : 0) #define SCTP_IS_IT_LOOPBACK(m) ((m->m_flags & M_PKTHDR) && ((m->m_pkthdr.rcvif == NULL) || (m->m_pkthdr.rcvif->if_type == IFT_LOOP))) /* This converts any input packet header * into the chain of data holders, for BSD * its a NOP. */ /* get the v6 hop limit */ #define SCTP_GET_HLIM(inp, ro) in6_selecthlim((struct in6pcb *)&inp->ip_inp.inp, (ro ? (ro->ro_rt ? (ro->ro_rt->rt_ifp) : (NULL)) : (NULL))); /* is the endpoint v6only? */ #define SCTP_IPV6_V6ONLY(inp) (((struct inpcb *)inp)->inp_flags & IN6P_IPV6_V6ONLY) /* is the socket non-blocking? */ #define SCTP_SO_IS_NBIO(so) ((so)->so_state & SS_NBIO) #define SCTP_SET_SO_NBIO(so) ((so)->so_state |= SS_NBIO) #define SCTP_CLEAR_SO_NBIO(so) ((so)->so_state &= ~SS_NBIO) /* get the socket type */ #define SCTP_SO_TYPE(so) ((so)->so_type) /* Use a macro for renaming sb_cc to sb_acc. * Initially sb_ccc was used, but this broke select() when used * with SCTP sockets. */ #define sb_cc sb_acc /* reserve sb space for a socket */ #define SCTP_SORESERVE(so, send, recv) soreserve(so, send, recv) /* wakeup a socket */ #define SCTP_SOWAKEUP(so) wakeup(&(so)->so_timeo) /* clear the socket buffer state */ #define SCTP_SB_CLEAR(sb) \ (sb).sb_cc = 0; \ (sb).sb_mb = NULL; \ (sb).sb_mbcnt = 0; #define SCTP_SB_LIMIT_RCV(so) so->so_rcv.sb_hiwat #define SCTP_SB_LIMIT_SND(so) so->so_snd.sb_hiwat /* * routes, output, etc. */ typedef struct route sctp_route_t; typedef struct rtentry sctp_rtentry_t; #define SCTP_RTALLOC(ro, vrf_id, fibnum) \ rtalloc_ign_fib((struct route *)ro, 0UL, fibnum) /* Future zero copy wakeup/send function */ #define SCTP_ZERO_COPY_EVENT(inp, so) /* This is re-pulse ourselves for sendbuf */ #define SCTP_ZERO_COPY_SENDQ_EVENT(inp, so) /* * SCTP protocol specific mbuf flags. */ #define M_NOTIFICATION M_PROTO1 /* SCTP notification */ /* * IP output routines */ #define SCTP_IP_OUTPUT(result, o_pak, ro, stcb, vrf_id) \ { \ int o_flgs = IP_RAWOUTPUT; \ struct sctp_tcb *local_stcb = stcb; \ if (local_stcb && \ local_stcb->sctp_ep && \ local_stcb->sctp_ep->sctp_socket) \ o_flgs |= local_stcb->sctp_ep->sctp_socket->so_options & SO_DONTROUTE; \ m_clrprotoflags(o_pak); \ result = ip_output(o_pak, NULL, ro, o_flgs, 0, NULL); \ } #define SCTP_IP6_OUTPUT(result, o_pak, ro, ifp, stcb, vrf_id) \ { \ struct sctp_tcb *local_stcb = stcb; \ m_clrprotoflags(o_pak); \ if (local_stcb && local_stcb->sctp_ep) \ result = ip6_output(o_pak, \ ((struct in6pcb *)(local_stcb->sctp_ep))->in6p_outputopts, \ (ro), 0, 0, ifp, NULL); \ else \ result = ip6_output(o_pak, NULL, (ro), 0, 0, ifp, NULL); \ } struct mbuf * sctp_get_mbuf_for_msg(unsigned int space_needed, int want_header, int how, int allonebuf, int type); /* * SCTP AUTH */ #define SCTP_READ_RANDOM(buf, len) read_random(buf, len) /* map standard crypto API names */ #define SCTP_SHA1_CTX SHA1_CTX #define SCTP_SHA1_INIT SHA1Init #define SCTP_SHA1_UPDATE SHA1Update #define SCTP_SHA1_FINAL(x,y) SHA1Final((caddr_t)x, y) #define SCTP_SHA256_CTX SHA256_CTX #define SCTP_SHA256_INIT SHA256_Init #define SCTP_SHA256_UPDATE SHA256_Update #define SCTP_SHA256_FINAL(x,y) SHA256_Final((caddr_t)x, y) #endif #define SCTP_DECREMENT_AND_CHECK_REFCOUNT(addr) (atomic_fetchadd_int(addr, -1) == 1) #if defined(INVARIANTS) #define SCTP_SAVE_ATOMIC_DECREMENT(addr, val) \ { \ int32_t oldval; \ - oldval = atomic_fetchadd_int(addr, -val); \ + oldval = atomic_fetchadd_int(addr, -val); \ if (oldval < val) { \ - panic("Counter goes negative"); \ + panic("Counter goes negative addr:%p val:%d oldval:%d", addr, val, oldval); \ } \ } #else #define SCTP_SAVE_ATOMIC_DECREMENT(addr, val) \ { \ int32_t oldval; \ oldval = atomic_fetchadd_int(addr, -val); \ if (oldval < val) { \ *addr = 0; \ } \ } #endif Index: head/sys/netinet/sctp_output.c =================================================================== --- head/sys/netinet/sctp_output.c (revision 297661) +++ head/sys/netinet/sctp_output.c (revision 297662) @@ -1,13738 +1,13854 @@ /*- * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved. * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * a) Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * b) Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the distribution. * * c) Neither the name of Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if defined(INET) || defined(INET6) #include #endif #include #include #define SCTP_MAX_GAPS_INARRAY 4 struct sack_track { uint8_t right_edge; /* mergable on the right edge */ uint8_t left_edge; /* mergable on the left edge */ uint8_t num_entries; uint8_t spare; struct sctp_gap_ack_block gaps[SCTP_MAX_GAPS_INARRAY]; }; const struct sack_track sack_array[256] = { {0, 0, 0, 0, /* 0x00 */ {{0, 0}, {0, 0}, {0, 0}, {0, 0} } }, {1, 0, 1, 0, /* 0x01 */ {{0, 0}, {0, 0}, {0, 0}, {0, 0} } }, {0, 0, 1, 0, /* 0x02 */ {{1, 1}, {0, 0}, {0, 0}, {0, 0} } }, {1, 0, 1, 0, /* 0x03 */ {{0, 1}, {0, 0}, {0, 0}, {0, 0} } }, {0, 0, 1, 0, /* 0x04 */ {{2, 2}, {0, 0}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x05 */ {{0, 0}, {2, 2}, {0, 0}, {0, 0} } }, {0, 0, 1, 0, /* 0x06 */ {{1, 2}, {0, 0}, {0, 0}, {0, 0} } }, {1, 0, 1, 0, /* 0x07 */ {{0, 2}, {0, 0}, {0, 0}, {0, 0} } }, {0, 0, 1, 0, /* 0x08 */ {{3, 3}, {0, 0}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x09 */ {{0, 0}, {3, 3}, {0, 0}, {0, 0} } }, {0, 0, 2, 0, /* 0x0a */ {{1, 1}, {3, 3}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x0b */ {{0, 1}, {3, 3}, {0, 0}, {0, 0} } }, {0, 0, 1, 0, /* 0x0c */ {{2, 3}, {0, 0}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x0d */ {{0, 0}, {2, 3}, {0, 0}, {0, 0} } }, {0, 0, 1, 0, /* 0x0e */ {{1, 3}, {0, 0}, {0, 0}, {0, 0} } }, {1, 0, 1, 0, /* 0x0f */ {{0, 3}, {0, 0}, {0, 0}, {0, 0} } }, {0, 0, 1, 0, /* 0x10 */ {{4, 4}, {0, 0}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x11 */ {{0, 0}, {4, 4}, {0, 0}, {0, 0} } }, {0, 0, 2, 0, /* 0x12 */ {{1, 1}, {4, 4}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x13 */ {{0, 1}, {4, 4}, {0, 0}, {0, 0} } }, {0, 0, 2, 0, /* 0x14 */ {{2, 2}, {4, 4}, {0, 0}, {0, 0} } }, {1, 0, 3, 0, /* 0x15 */ {{0, 0}, {2, 2}, {4, 4}, {0, 0} } }, {0, 0, 2, 0, /* 0x16 */ {{1, 2}, {4, 4}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x17 */ {{0, 2}, {4, 4}, {0, 0}, {0, 0} } }, {0, 0, 1, 0, /* 0x18 */ {{3, 4}, {0, 0}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x19 */ {{0, 0}, {3, 4}, {0, 0}, {0, 0} } }, {0, 0, 2, 0, /* 0x1a */ {{1, 1}, {3, 4}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x1b */ {{0, 1}, {3, 4}, {0, 0}, {0, 0} } }, {0, 0, 1, 0, /* 0x1c */ {{2, 4}, {0, 0}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x1d */ {{0, 0}, {2, 4}, {0, 0}, {0, 0} } }, {0, 0, 1, 0, /* 0x1e */ {{1, 4}, {0, 0}, {0, 0}, {0, 0} } }, {1, 0, 1, 0, /* 0x1f */ {{0, 4}, {0, 0}, {0, 0}, {0, 0} } }, {0, 0, 1, 0, /* 0x20 */ {{5, 5}, {0, 0}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x21 */ {{0, 0}, {5, 5}, {0, 0}, {0, 0} } }, {0, 0, 2, 0, /* 0x22 */ {{1, 1}, {5, 5}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x23 */ {{0, 1}, {5, 5}, {0, 0}, {0, 0} } }, {0, 0, 2, 0, /* 0x24 */ {{2, 2}, {5, 5}, {0, 0}, {0, 0} } }, {1, 0, 3, 0, /* 0x25 */ {{0, 0}, {2, 2}, {5, 5}, {0, 0} } }, {0, 0, 2, 0, /* 0x26 */ {{1, 2}, {5, 5}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x27 */ {{0, 2}, {5, 5}, {0, 0}, {0, 0} } }, {0, 0, 2, 0, /* 0x28 */ {{3, 3}, {5, 5}, {0, 0}, {0, 0} } }, {1, 0, 3, 0, /* 0x29 */ {{0, 0}, {3, 3}, {5, 5}, {0, 0} } }, {0, 0, 3, 0, /* 0x2a */ {{1, 1}, {3, 3}, {5, 5}, {0, 0} } }, {1, 0, 3, 0, /* 0x2b */ {{0, 1}, {3, 3}, {5, 5}, {0, 0} } }, {0, 0, 2, 0, /* 0x2c */ {{2, 3}, {5, 5}, {0, 0}, {0, 0} } }, {1, 0, 3, 0, /* 0x2d */ {{0, 0}, {2, 3}, {5, 5}, {0, 0} } }, {0, 0, 2, 0, /* 0x2e */ {{1, 3}, {5, 5}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x2f */ {{0, 3}, {5, 5}, {0, 0}, {0, 0} } }, {0, 0, 1, 0, /* 0x30 */ {{4, 5}, {0, 0}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x31 */ {{0, 0}, {4, 5}, {0, 0}, {0, 0} } }, {0, 0, 2, 0, /* 0x32 */ {{1, 1}, {4, 5}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x33 */ {{0, 1}, {4, 5}, {0, 0}, {0, 0} } }, {0, 0, 2, 0, /* 0x34 */ {{2, 2}, {4, 5}, {0, 0}, {0, 0} } }, {1, 0, 3, 0, /* 0x35 */ {{0, 0}, {2, 2}, {4, 5}, {0, 0} } }, {0, 0, 2, 0, /* 0x36 */ {{1, 2}, {4, 5}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x37 */ {{0, 2}, {4, 5}, {0, 0}, {0, 0} } }, {0, 0, 1, 0, /* 0x38 */ {{3, 5}, {0, 0}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x39 */ {{0, 0}, {3, 5}, {0, 0}, {0, 0} } }, {0, 0, 2, 0, /* 0x3a */ {{1, 1}, {3, 5}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x3b */ {{0, 1}, {3, 5}, {0, 0}, {0, 0} } }, {0, 0, 1, 0, /* 0x3c */ {{2, 5}, {0, 0}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x3d */ {{0, 0}, {2, 5}, {0, 0}, {0, 0} } }, {0, 0, 1, 0, /* 0x3e */ {{1, 5}, {0, 0}, {0, 0}, {0, 0} } }, {1, 0, 1, 0, /* 0x3f */ {{0, 5}, {0, 0}, {0, 0}, {0, 0} } }, {0, 0, 1, 0, /* 0x40 */ {{6, 6}, {0, 0}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x41 */ {{0, 0}, {6, 6}, {0, 0}, {0, 0} } }, {0, 0, 2, 0, /* 0x42 */ {{1, 1}, {6, 6}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x43 */ {{0, 1}, {6, 6}, {0, 0}, {0, 0} } }, {0, 0, 2, 0, /* 0x44 */ {{2, 2}, {6, 6}, {0, 0}, {0, 0} } }, {1, 0, 3, 0, /* 0x45 */ {{0, 0}, {2, 2}, {6, 6}, {0, 0} } }, {0, 0, 2, 0, /* 0x46 */ {{1, 2}, {6, 6}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x47 */ {{0, 2}, {6, 6}, {0, 0}, {0, 0} } }, {0, 0, 2, 0, /* 0x48 */ {{3, 3}, {6, 6}, {0, 0}, {0, 0} } }, {1, 0, 3, 0, /* 0x49 */ {{0, 0}, {3, 3}, {6, 6}, {0, 0} } }, {0, 0, 3, 0, /* 0x4a */ {{1, 1}, {3, 3}, {6, 6}, {0, 0} } }, {1, 0, 3, 0, /* 0x4b */ {{0, 1}, {3, 3}, {6, 6}, {0, 0} } }, {0, 0, 2, 0, /* 0x4c */ {{2, 3}, {6, 6}, {0, 0}, {0, 0} } }, {1, 0, 3, 0, /* 0x4d */ {{0, 0}, {2, 3}, {6, 6}, {0, 0} } }, {0, 0, 2, 0, /* 0x4e */ {{1, 3}, {6, 6}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x4f */ {{0, 3}, {6, 6}, {0, 0}, {0, 0} } }, {0, 0, 2, 0, /* 0x50 */ {{4, 4}, {6, 6}, {0, 0}, {0, 0} } }, {1, 0, 3, 0, /* 0x51 */ {{0, 0}, {4, 4}, {6, 6}, {0, 0} } }, {0, 0, 3, 0, /* 0x52 */ {{1, 1}, {4, 4}, {6, 6}, {0, 0} } }, {1, 0, 3, 0, /* 0x53 */ {{0, 1}, {4, 4}, {6, 6}, {0, 0} } }, {0, 0, 3, 0, /* 0x54 */ {{2, 2}, {4, 4}, {6, 6}, {0, 0} } }, {1, 0, 4, 0, /* 0x55 */ {{0, 0}, {2, 2}, {4, 4}, {6, 6} } }, {0, 0, 3, 0, /* 0x56 */ {{1, 2}, {4, 4}, {6, 6}, {0, 0} } }, {1, 0, 3, 0, /* 0x57 */ {{0, 2}, {4, 4}, {6, 6}, {0, 0} } }, {0, 0, 2, 0, /* 0x58 */ {{3, 4}, {6, 6}, {0, 0}, {0, 0} } }, {1, 0, 3, 0, /* 0x59 */ {{0, 0}, {3, 4}, {6, 6}, {0, 0} } }, {0, 0, 3, 0, /* 0x5a */ {{1, 1}, {3, 4}, {6, 6}, {0, 0} } }, {1, 0, 3, 0, /* 0x5b */ {{0, 1}, {3, 4}, {6, 6}, {0, 0} } }, {0, 0, 2, 0, /* 0x5c */ {{2, 4}, {6, 6}, {0, 0}, {0, 0} } }, {1, 0, 3, 0, /* 0x5d */ {{0, 0}, {2, 4}, {6, 6}, {0, 0} } }, {0, 0, 2, 0, /* 0x5e */ {{1, 4}, {6, 6}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x5f */ {{0, 4}, {6, 6}, {0, 0}, {0, 0} } }, {0, 0, 1, 0, /* 0x60 */ {{5, 6}, {0, 0}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x61 */ {{0, 0}, {5, 6}, {0, 0}, {0, 0} } }, {0, 0, 2, 0, /* 0x62 */ {{1, 1}, {5, 6}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x63 */ {{0, 1}, {5, 6}, {0, 0}, {0, 0} } }, {0, 0, 2, 0, /* 0x64 */ {{2, 2}, {5, 6}, {0, 0}, {0, 0} } }, {1, 0, 3, 0, /* 0x65 */ {{0, 0}, {2, 2}, {5, 6}, {0, 0} } }, {0, 0, 2, 0, /* 0x66 */ {{1, 2}, {5, 6}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x67 */ {{0, 2}, {5, 6}, {0, 0}, {0, 0} } }, {0, 0, 2, 0, /* 0x68 */ {{3, 3}, {5, 6}, {0, 0}, {0, 0} } }, {1, 0, 3, 0, /* 0x69 */ {{0, 0}, {3, 3}, {5, 6}, {0, 0} } }, {0, 0, 3, 0, /* 0x6a */ {{1, 1}, {3, 3}, {5, 6}, {0, 0} } }, {1, 0, 3, 0, /* 0x6b */ {{0, 1}, {3, 3}, {5, 6}, {0, 0} } }, {0, 0, 2, 0, /* 0x6c */ {{2, 3}, {5, 6}, {0, 0}, {0, 0} } }, {1, 0, 3, 0, /* 0x6d */ {{0, 0}, {2, 3}, {5, 6}, {0, 0} } }, {0, 0, 2, 0, /* 0x6e */ {{1, 3}, {5, 6}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x6f */ {{0, 3}, {5, 6}, {0, 0}, {0, 0} } }, {0, 0, 1, 0, /* 0x70 */ {{4, 6}, {0, 0}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x71 */ {{0, 0}, {4, 6}, {0, 0}, {0, 0} } }, {0, 0, 2, 0, /* 0x72 */ {{1, 1}, {4, 6}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x73 */ {{0, 1}, {4, 6}, {0, 0}, {0, 0} } }, {0, 0, 2, 0, /* 0x74 */ {{2, 2}, {4, 6}, {0, 0}, {0, 0} } }, {1, 0, 3, 0, /* 0x75 */ {{0, 0}, {2, 2}, {4, 6}, {0, 0} } }, {0, 0, 2, 0, /* 0x76 */ {{1, 2}, {4, 6}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x77 */ {{0, 2}, {4, 6}, {0, 0}, {0, 0} } }, {0, 0, 1, 0, /* 0x78 */ {{3, 6}, {0, 0}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x79 */ {{0, 0}, {3, 6}, {0, 0}, {0, 0} } }, {0, 0, 2, 0, /* 0x7a */ {{1, 1}, {3, 6}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x7b */ {{0, 1}, {3, 6}, {0, 0}, {0, 0} } }, {0, 0, 1, 0, /* 0x7c */ {{2, 6}, {0, 0}, {0, 0}, {0, 0} } }, {1, 0, 2, 0, /* 0x7d */ {{0, 0}, {2, 6}, {0, 0}, {0, 0} } }, {0, 0, 1, 0, /* 0x7e */ {{1, 6}, {0, 0}, {0, 0}, {0, 0} } }, {1, 0, 1, 0, /* 0x7f */ {{0, 6}, {0, 0}, {0, 0}, {0, 0} } }, {0, 1, 1, 0, /* 0x80 */ {{7, 7}, {0, 0}, {0, 0}, {0, 0} } }, {1, 1, 2, 0, /* 0x81 */ {{0, 0}, {7, 7}, {0, 0}, {0, 0} } }, {0, 1, 2, 0, /* 0x82 */ {{1, 1}, {7, 7}, {0, 0}, {0, 0} } }, {1, 1, 2, 0, /* 0x83 */ {{0, 1}, {7, 7}, {0, 0}, {0, 0} } }, {0, 1, 2, 0, /* 0x84 */ {{2, 2}, {7, 7}, {0, 0}, {0, 0} } }, {1, 1, 3, 0, /* 0x85 */ {{0, 0}, {2, 2}, {7, 7}, {0, 0} } }, {0, 1, 2, 0, /* 0x86 */ {{1, 2}, {7, 7}, {0, 0}, {0, 0} } }, {1, 1, 2, 0, /* 0x87 */ {{0, 2}, {7, 7}, {0, 0}, {0, 0} } }, {0, 1, 2, 0, /* 0x88 */ {{3, 3}, {7, 7}, {0, 0}, {0, 0} } }, {1, 1, 3, 0, /* 0x89 */ {{0, 0}, {3, 3}, {7, 7}, {0, 0} } }, {0, 1, 3, 0, /* 0x8a */ {{1, 1}, {3, 3}, {7, 7}, {0, 0} } }, {1, 1, 3, 0, /* 0x8b */ {{0, 1}, {3, 3}, {7, 7}, {0, 0} } }, {0, 1, 2, 0, /* 0x8c */ {{2, 3}, {7, 7}, {0, 0}, {0, 0} } }, {1, 1, 3, 0, /* 0x8d */ {{0, 0}, {2, 3}, {7, 7}, {0, 0} } }, {0, 1, 2, 0, /* 0x8e */ {{1, 3}, {7, 7}, {0, 0}, {0, 0} } }, {1, 1, 2, 0, /* 0x8f */ {{0, 3}, {7, 7}, {0, 0}, {0, 0} } }, {0, 1, 2, 0, /* 0x90 */ {{4, 4}, {7, 7}, {0, 0}, {0, 0} } }, {1, 1, 3, 0, /* 0x91 */ {{0, 0}, {4, 4}, {7, 7}, {0, 0} } }, {0, 1, 3, 0, /* 0x92 */ {{1, 1}, {4, 4}, {7, 7}, {0, 0} } }, {1, 1, 3, 0, /* 0x93 */ {{0, 1}, {4, 4}, {7, 7}, {0, 0} } }, {0, 1, 3, 0, /* 0x94 */ {{2, 2}, {4, 4}, {7, 7}, {0, 0} } }, {1, 1, 4, 0, /* 0x95 */ {{0, 0}, {2, 2}, {4, 4}, {7, 7} } }, {0, 1, 3, 0, /* 0x96 */ {{1, 2}, {4, 4}, {7, 7}, {0, 0} } }, {1, 1, 3, 0, /* 0x97 */ {{0, 2}, {4, 4}, {7, 7}, {0, 0} } }, {0, 1, 2, 0, /* 0x98 */ {{3, 4}, {7, 7}, {0, 0}, {0, 0} } }, {1, 1, 3, 0, /* 0x99 */ {{0, 0}, {3, 4}, {7, 7}, {0, 0} } }, {0, 1, 3, 0, /* 0x9a */ {{1, 1}, {3, 4}, {7, 7}, {0, 0} } }, {1, 1, 3, 0, /* 0x9b */ {{0, 1}, {3, 4}, {7, 7}, {0, 0} } }, {0, 1, 2, 0, /* 0x9c */ {{2, 4}, {7, 7}, {0, 0}, {0, 0} } }, {1, 1, 3, 0, /* 0x9d */ {{0, 0}, {2, 4}, {7, 7}, {0, 0} } }, {0, 1, 2, 0, /* 0x9e */ {{1, 4}, {7, 7}, {0, 0}, {0, 0} } }, {1, 1, 2, 0, /* 0x9f */ {{0, 4}, {7, 7}, {0, 0}, {0, 0} } }, {0, 1, 2, 0, /* 0xa0 */ {{5, 5}, {7, 7}, {0, 0}, {0, 0} } }, {1, 1, 3, 0, /* 0xa1 */ {{0, 0}, {5, 5}, {7, 7}, {0, 0} } }, {0, 1, 3, 0, /* 0xa2 */ {{1, 1}, {5, 5}, {7, 7}, {0, 0} } }, {1, 1, 3, 0, /* 0xa3 */ {{0, 1}, {5, 5}, {7, 7}, {0, 0} } }, {0, 1, 3, 0, /* 0xa4 */ {{2, 2}, {5, 5}, {7, 7}, {0, 0} } }, {1, 1, 4, 0, /* 0xa5 */ {{0, 0}, {2, 2}, {5, 5}, {7, 7} } }, {0, 1, 3, 0, /* 0xa6 */ {{1, 2}, {5, 5}, {7, 7}, {0, 0} } }, {1, 1, 3, 0, /* 0xa7 */ {{0, 2}, {5, 5}, {7, 7}, {0, 0} } }, {0, 1, 3, 0, /* 0xa8 */ {{3, 3}, {5, 5}, {7, 7}, {0, 0} } }, {1, 1, 4, 0, /* 0xa9 */ {{0, 0}, {3, 3}, {5, 5}, {7, 7} } }, {0, 1, 4, 0, /* 0xaa */ {{1, 1}, {3, 3}, {5, 5}, {7, 7} } }, {1, 1, 4, 0, /* 0xab */ {{0, 1}, {3, 3}, {5, 5}, {7, 7} } }, {0, 1, 3, 0, /* 0xac */ {{2, 3}, {5, 5}, {7, 7}, {0, 0} } }, {1, 1, 4, 0, /* 0xad */ {{0, 0}, {2, 3}, {5, 5}, {7, 7} } }, {0, 1, 3, 0, /* 0xae */ {{1, 3}, {5, 5}, {7, 7}, {0, 0} } }, {1, 1, 3, 0, /* 0xaf */ {{0, 3}, {5, 5}, {7, 7}, {0, 0} } }, {0, 1, 2, 0, /* 0xb0 */ {{4, 5}, {7, 7}, {0, 0}, {0, 0} } }, {1, 1, 3, 0, /* 0xb1 */ {{0, 0}, {4, 5}, {7, 7}, {0, 0} } }, {0, 1, 3, 0, /* 0xb2 */ {{1, 1}, {4, 5}, {7, 7}, {0, 0} } }, {1, 1, 3, 0, /* 0xb3 */ {{0, 1}, {4, 5}, {7, 7}, {0, 0} } }, {0, 1, 3, 0, /* 0xb4 */ {{2, 2}, {4, 5}, {7, 7}, {0, 0} } }, {1, 1, 4, 0, /* 0xb5 */ {{0, 0}, {2, 2}, {4, 5}, {7, 7} } }, {0, 1, 3, 0, /* 0xb6 */ {{1, 2}, {4, 5}, {7, 7}, {0, 0} } }, {1, 1, 3, 0, /* 0xb7 */ {{0, 2}, {4, 5}, {7, 7}, {0, 0} } }, {0, 1, 2, 0, /* 0xb8 */ {{3, 5}, {7, 7}, {0, 0}, {0, 0} } }, {1, 1, 3, 0, /* 0xb9 */ {{0, 0}, {3, 5}, {7, 7}, {0, 0} } }, {0, 1, 3, 0, /* 0xba */ {{1, 1}, {3, 5}, {7, 7}, {0, 0} } }, {1, 1, 3, 0, /* 0xbb */ {{0, 1}, {3, 5}, {7, 7}, {0, 0} } }, {0, 1, 2, 0, /* 0xbc */ {{2, 5}, {7, 7}, {0, 0}, {0, 0} } }, {1, 1, 3, 0, /* 0xbd */ {{0, 0}, {2, 5}, {7, 7}, {0, 0} } }, {0, 1, 2, 0, /* 0xbe */ {{1, 5}, {7, 7}, {0, 0}, {0, 0} } }, {1, 1, 2, 0, /* 0xbf */ {{0, 5}, {7, 7}, {0, 0}, {0, 0} } }, {0, 1, 1, 0, /* 0xc0 */ {{6, 7}, {0, 0}, {0, 0}, {0, 0} } }, {1, 1, 2, 0, /* 0xc1 */ {{0, 0}, {6, 7}, {0, 0}, {0, 0} } }, {0, 1, 2, 0, /* 0xc2 */ {{1, 1}, {6, 7}, {0, 0}, {0, 0} } }, {1, 1, 2, 0, /* 0xc3 */ {{0, 1}, {6, 7}, {0, 0}, {0, 0} } }, {0, 1, 2, 0, /* 0xc4 */ {{2, 2}, {6, 7}, {0, 0}, {0, 0} } }, {1, 1, 3, 0, /* 0xc5 */ {{0, 0}, {2, 2}, {6, 7}, {0, 0} } }, {0, 1, 2, 0, /* 0xc6 */ {{1, 2}, {6, 7}, {0, 0}, {0, 0} } }, {1, 1, 2, 0, /* 0xc7 */ {{0, 2}, {6, 7}, {0, 0}, {0, 0} } }, {0, 1, 2, 0, /* 0xc8 */ {{3, 3}, {6, 7}, {0, 0}, {0, 0} } }, {1, 1, 3, 0, /* 0xc9 */ {{0, 0}, {3, 3}, {6, 7}, {0, 0} } }, {0, 1, 3, 0, /* 0xca */ {{1, 1}, {3, 3}, {6, 7}, {0, 0} } }, {1, 1, 3, 0, /* 0xcb */ {{0, 1}, {3, 3}, {6, 7}, {0, 0} } }, {0, 1, 2, 0, /* 0xcc */ {{2, 3}, {6, 7}, {0, 0}, {0, 0} } }, {1, 1, 3, 0, /* 0xcd */ {{0, 0}, {2, 3}, {6, 7}, {0, 0} } }, {0, 1, 2, 0, /* 0xce */ {{1, 3}, {6, 7}, {0, 0}, {0, 0} } }, {1, 1, 2, 0, /* 0xcf */ {{0, 3}, {6, 7}, {0, 0}, {0, 0} } }, {0, 1, 2, 0, /* 0xd0 */ {{4, 4}, {6, 7}, {0, 0}, {0, 0} } }, {1, 1, 3, 0, /* 0xd1 */ {{0, 0}, {4, 4}, {6, 7}, {0, 0} } }, {0, 1, 3, 0, /* 0xd2 */ {{1, 1}, {4, 4}, {6, 7}, {0, 0} } }, {1, 1, 3, 0, /* 0xd3 */ {{0, 1}, {4, 4}, {6, 7}, {0, 0} } }, {0, 1, 3, 0, /* 0xd4 */ {{2, 2}, {4, 4}, {6, 7}, {0, 0} } }, {1, 1, 4, 0, /* 0xd5 */ {{0, 0}, {2, 2}, {4, 4}, {6, 7} } }, {0, 1, 3, 0, /* 0xd6 */ {{1, 2}, {4, 4}, {6, 7}, {0, 0} } }, {1, 1, 3, 0, /* 0xd7 */ {{0, 2}, {4, 4}, {6, 7}, {0, 0} } }, {0, 1, 2, 0, /* 0xd8 */ {{3, 4}, {6, 7}, {0, 0}, {0, 0} } }, {1, 1, 3, 0, /* 0xd9 */ {{0, 0}, {3, 4}, {6, 7}, {0, 0} } }, {0, 1, 3, 0, /* 0xda */ {{1, 1}, {3, 4}, {6, 7}, {0, 0} } }, {1, 1, 3, 0, /* 0xdb */ {{0, 1}, {3, 4}, {6, 7}, {0, 0} } }, {0, 1, 2, 0, /* 0xdc */ {{2, 4}, {6, 7}, {0, 0}, {0, 0} } }, {1, 1, 3, 0, /* 0xdd */ {{0, 0}, {2, 4}, {6, 7}, {0, 0} } }, {0, 1, 2, 0, /* 0xde */ {{1, 4}, {6, 7}, {0, 0}, {0, 0} } }, {1, 1, 2, 0, /* 0xdf */ {{0, 4}, {6, 7}, {0, 0}, {0, 0} } }, {0, 1, 1, 0, /* 0xe0 */ {{5, 7}, {0, 0}, {0, 0}, {0, 0} } }, {1, 1, 2, 0, /* 0xe1 */ {{0, 0}, {5, 7}, {0, 0}, {0, 0} } }, {0, 1, 2, 0, /* 0xe2 */ {{1, 1}, {5, 7}, {0, 0}, {0, 0} } }, {1, 1, 2, 0, /* 0xe3 */ {{0, 1}, {5, 7}, {0, 0}, {0, 0} } }, {0, 1, 2, 0, /* 0xe4 */ {{2, 2}, {5, 7}, {0, 0}, {0, 0} } }, {1, 1, 3, 0, /* 0xe5 */ {{0, 0}, {2, 2}, {5, 7}, {0, 0} } }, {0, 1, 2, 0, /* 0xe6 */ {{1, 2}, {5, 7}, {0, 0}, {0, 0} } }, {1, 1, 2, 0, /* 0xe7 */ {{0, 2}, {5, 7}, {0, 0}, {0, 0} } }, {0, 1, 2, 0, /* 0xe8 */ {{3, 3}, {5, 7}, {0, 0}, {0, 0} } }, {1, 1, 3, 0, /* 0xe9 */ {{0, 0}, {3, 3}, {5, 7}, {0, 0} } }, {0, 1, 3, 0, /* 0xea */ {{1, 1}, {3, 3}, {5, 7}, {0, 0} } }, {1, 1, 3, 0, /* 0xeb */ {{0, 1}, {3, 3}, {5, 7}, {0, 0} } }, {0, 1, 2, 0, /* 0xec */ {{2, 3}, {5, 7}, {0, 0}, {0, 0} } }, {1, 1, 3, 0, /* 0xed */ {{0, 0}, {2, 3}, {5, 7}, {0, 0} } }, {0, 1, 2, 0, /* 0xee */ {{1, 3}, {5, 7}, {0, 0}, {0, 0} } }, {1, 1, 2, 0, /* 0xef */ {{0, 3}, {5, 7}, {0, 0}, {0, 0} } }, {0, 1, 1, 0, /* 0xf0 */ {{4, 7}, {0, 0}, {0, 0}, {0, 0} } }, {1, 1, 2, 0, /* 0xf1 */ {{0, 0}, {4, 7}, {0, 0}, {0, 0} } }, {0, 1, 2, 0, /* 0xf2 */ {{1, 1}, {4, 7}, {0, 0}, {0, 0} } }, {1, 1, 2, 0, /* 0xf3 */ {{0, 1}, {4, 7}, {0, 0}, {0, 0} } }, {0, 1, 2, 0, /* 0xf4 */ {{2, 2}, {4, 7}, {0, 0}, {0, 0} } }, {1, 1, 3, 0, /* 0xf5 */ {{0, 0}, {2, 2}, {4, 7}, {0, 0} } }, {0, 1, 2, 0, /* 0xf6 */ {{1, 2}, {4, 7}, {0, 0}, {0, 0} } }, {1, 1, 2, 0, /* 0xf7 */ {{0, 2}, {4, 7}, {0, 0}, {0, 0} } }, {0, 1, 1, 0, /* 0xf8 */ {{3, 7}, {0, 0}, {0, 0}, {0, 0} } }, {1, 1, 2, 0, /* 0xf9 */ {{0, 0}, {3, 7}, {0, 0}, {0, 0} } }, {0, 1, 2, 0, /* 0xfa */ {{1, 1}, {3, 7}, {0, 0}, {0, 0} } }, {1, 1, 2, 0, /* 0xfb */ {{0, 1}, {3, 7}, {0, 0}, {0, 0} } }, {0, 1, 1, 0, /* 0xfc */ {{2, 7}, {0, 0}, {0, 0}, {0, 0} } }, {1, 1, 2, 0, /* 0xfd */ {{0, 0}, {2, 7}, {0, 0}, {0, 0} } }, {0, 1, 1, 0, /* 0xfe */ {{1, 7}, {0, 0}, {0, 0}, {0, 0} } }, {1, 1, 1, 0, /* 0xff */ {{0, 7}, {0, 0}, {0, 0}, {0, 0} } } }; int sctp_is_address_in_scope(struct sctp_ifa *ifa, struct sctp_scoping *scope, int do_update) { if ((scope->loopback_scope == 0) && (ifa->ifn_p) && SCTP_IFN_IS_IFT_LOOP(ifa->ifn_p)) { /* * skip loopback if not in scope * */ return (0); } switch (ifa->address.sa.sa_family) { #ifdef INET case AF_INET: if (scope->ipv4_addr_legal) { struct sockaddr_in *sin; sin = &ifa->address.sin; if (sin->sin_addr.s_addr == 0) { /* not in scope , unspecified */ return (0); } if ((scope->ipv4_local_scope == 0) && (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) { /* private address not in scope */ return (0); } } else { return (0); } break; #endif #ifdef INET6 case AF_INET6: if (scope->ipv6_addr_legal) { struct sockaddr_in6 *sin6; /* * Must update the flags, bummer, which means any * IFA locks must now be applied HERE <-> */ if (do_update) { sctp_gather_internal_ifa_flags(ifa); } if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) { return (0); } /* ok to use deprecated addresses? */ sin6 = &ifa->address.sin6; if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { /* skip unspecifed addresses */ return (0); } if ( /* (local_scope == 0) && */ (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr))) { return (0); } if ((scope->site_scope == 0) && (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) { return (0); } } else { return (0); } break; #endif default: return (0); } return (1); } static struct mbuf * sctp_add_addr_to_mbuf(struct mbuf *m, struct sctp_ifa *ifa, uint16_t * len) { #if defined(INET) || defined(INET6) struct sctp_paramhdr *parmh; struct mbuf *mret; uint16_t plen; #endif switch (ifa->address.sa.sa_family) { #ifdef INET case AF_INET: plen = (uint16_t) sizeof(struct sctp_ipv4addr_param); break; #endif #ifdef INET6 case AF_INET6: plen = (uint16_t) sizeof(struct sctp_ipv6addr_param); break; #endif default: return (m); } #if defined(INET) || defined(INET6) if (M_TRAILINGSPACE(m) >= plen) { /* easy side we just drop it on the end */ parmh = (struct sctp_paramhdr *)(SCTP_BUF_AT(m, SCTP_BUF_LEN(m))); mret = m; } else { /* Need more space */ mret = m; while (SCTP_BUF_NEXT(mret) != NULL) { mret = SCTP_BUF_NEXT(mret); } SCTP_BUF_NEXT(mret) = sctp_get_mbuf_for_msg(plen, 0, M_NOWAIT, 1, MT_DATA); if (SCTP_BUF_NEXT(mret) == NULL) { /* We are hosed, can't add more addresses */ return (m); } mret = SCTP_BUF_NEXT(mret); parmh = mtod(mret, struct sctp_paramhdr *); } /* now add the parameter */ switch (ifa->address.sa.sa_family) { #ifdef INET case AF_INET: { struct sctp_ipv4addr_param *ipv4p; struct sockaddr_in *sin; sin = &ifa->address.sin; ipv4p = (struct sctp_ipv4addr_param *)parmh; parmh->param_type = htons(SCTP_IPV4_ADDRESS); parmh->param_length = htons(plen); ipv4p->addr = sin->sin_addr.s_addr; SCTP_BUF_LEN(mret) += plen; break; } #endif #ifdef INET6 case AF_INET6: { struct sctp_ipv6addr_param *ipv6p; struct sockaddr_in6 *sin6; sin6 = &ifa->address.sin6; ipv6p = (struct sctp_ipv6addr_param *)parmh; parmh->param_type = htons(SCTP_IPV6_ADDRESS); parmh->param_length = htons(plen); memcpy(ipv6p->addr, &sin6->sin6_addr, sizeof(ipv6p->addr)); /* clear embedded scope in the address */ in6_clearscope((struct in6_addr *)ipv6p->addr); SCTP_BUF_LEN(mret) += plen; break; } #endif default: return (m); } if (len != NULL) { *len += plen; } return (mret); #endif } struct mbuf * sctp_add_addresses_to_i_ia(struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sctp_scoping *scope, struct mbuf *m_at, int cnt_inits_to, uint16_t * padding_len, uint16_t * chunk_len) { struct sctp_vrf *vrf = NULL; int cnt, limit_out = 0, total_count; uint32_t vrf_id; vrf_id = inp->def_vrf_id; SCTP_IPI_ADDR_RLOCK(); vrf = sctp_find_vrf(vrf_id); if (vrf == NULL) { SCTP_IPI_ADDR_RUNLOCK(); return (m_at); } if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { struct sctp_ifa *sctp_ifap; struct sctp_ifn *sctp_ifnp; cnt = cnt_inits_to; if (vrf->total_ifa_count > SCTP_COUNT_LIMIT) { limit_out = 1; cnt = SCTP_ADDRESS_LIMIT; goto skip_count; } LIST_FOREACH(sctp_ifnp, &vrf->ifnlist, next_ifn) { if ((scope->loopback_scope == 0) && SCTP_IFN_IS_IFT_LOOP(sctp_ifnp)) { /* * Skip loopback devices if loopback_scope * not set */ continue; } LIST_FOREACH(sctp_ifap, &sctp_ifnp->ifalist, next_ifa) { #ifdef INET if ((sctp_ifap->address.sa.sa_family == AF_INET) && (prison_check_ip4(inp->ip_inp.inp.inp_cred, &sctp_ifap->address.sin.sin_addr) != 0)) { continue; } #endif #ifdef INET6 if ((sctp_ifap->address.sa.sa_family == AF_INET6) && (prison_check_ip6(inp->ip_inp.inp.inp_cred, &sctp_ifap->address.sin6.sin6_addr) != 0)) { continue; } #endif if (sctp_is_addr_restricted(stcb, sctp_ifap)) { continue; } if (sctp_is_address_in_scope(sctp_ifap, scope, 1) == 0) { continue; } cnt++; if (cnt > SCTP_ADDRESS_LIMIT) { break; } } if (cnt > SCTP_ADDRESS_LIMIT) { break; } } skip_count: if (cnt > 1) { total_count = 0; LIST_FOREACH(sctp_ifnp, &vrf->ifnlist, next_ifn) { cnt = 0; if ((scope->loopback_scope == 0) && SCTP_IFN_IS_IFT_LOOP(sctp_ifnp)) { /* * Skip loopback devices if * loopback_scope not set */ continue; } LIST_FOREACH(sctp_ifap, &sctp_ifnp->ifalist, next_ifa) { #ifdef INET if ((sctp_ifap->address.sa.sa_family == AF_INET) && (prison_check_ip4(inp->ip_inp.inp.inp_cred, &sctp_ifap->address.sin.sin_addr) != 0)) { continue; } #endif #ifdef INET6 if ((sctp_ifap->address.sa.sa_family == AF_INET6) && (prison_check_ip6(inp->ip_inp.inp.inp_cred, &sctp_ifap->address.sin6.sin6_addr) != 0)) { continue; } #endif if (sctp_is_addr_restricted(stcb, sctp_ifap)) { continue; } if (sctp_is_address_in_scope(sctp_ifap, scope, 0) == 0) { continue; } if ((chunk_len != NULL) && (padding_len != NULL) && (*padding_len > 0)) { memset(mtod(m_at, caddr_t)+*chunk_len, 0, *padding_len); SCTP_BUF_LEN(m_at) += *padding_len; *chunk_len += *padding_len; *padding_len = 0; } m_at = sctp_add_addr_to_mbuf(m_at, sctp_ifap, chunk_len); if (limit_out) { cnt++; total_count++; if (cnt >= 2) { /* * two from each * address */ break; } if (total_count > SCTP_ADDRESS_LIMIT) { /* No more addresses */ break; } } } } } } else { struct sctp_laddr *laddr; cnt = cnt_inits_to; /* First, how many ? */ LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { if (laddr->ifa == NULL) { continue; } if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) /* * Address being deleted by the system, dont * list. */ continue; if (laddr->action == SCTP_DEL_IP_ADDRESS) { /* * Address being deleted on this ep don't * list. */ continue; } if (sctp_is_address_in_scope(laddr->ifa, scope, 1) == 0) { continue; } cnt++; } /* * To get through a NAT we only list addresses if we have * more than one. That way if you just bind a single address * we let the source of the init dictate our address. */ if (cnt > 1) { cnt = cnt_inits_to; LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { if (laddr->ifa == NULL) { continue; } if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) { continue; } if (sctp_is_address_in_scope(laddr->ifa, scope, 0) == 0) { continue; } if ((chunk_len != NULL) && (padding_len != NULL) && (*padding_len > 0)) { memset(mtod(m_at, caddr_t)+*chunk_len, 0, *padding_len); SCTP_BUF_LEN(m_at) += *padding_len; *chunk_len += *padding_len; *padding_len = 0; } m_at = sctp_add_addr_to_mbuf(m_at, laddr->ifa, chunk_len); cnt++; if (cnt >= SCTP_ADDRESS_LIMIT) { break; } } } } SCTP_IPI_ADDR_RUNLOCK(); return (m_at); } static struct sctp_ifa * sctp_is_ifa_addr_preferred(struct sctp_ifa *ifa, uint8_t dest_is_loop, uint8_t dest_is_priv, sa_family_t fam) { uint8_t dest_is_global = 0; /* dest_is_priv is true if destination is a private address */ /* dest_is_loop is true if destination is a loopback addresses */ /** * Here we determine if its a preferred address. A preferred address * means it is the same scope or higher scope then the destination. * L = loopback, P = private, G = global * ----------------------------------------- * src | dest | result * ---------------------------------------- * L | L | yes * ----------------------------------------- * P | L | yes-v4 no-v6 * ----------------------------------------- * G | L | yes-v4 no-v6 * ----------------------------------------- * L | P | no * ----------------------------------------- * P | P | yes * ----------------------------------------- * G | P | no * ----------------------------------------- * L | G | no * ----------------------------------------- * P | G | no * ----------------------------------------- * G | G | yes * ----------------------------------------- */ if (ifa->address.sa.sa_family != fam) { /* forget mis-matched family */ return (NULL); } if ((dest_is_priv == 0) && (dest_is_loop == 0)) { dest_is_global = 1; } SCTPDBG(SCTP_DEBUG_OUTPUT2, "Is destination preferred:"); SCTPDBG_ADDR(SCTP_DEBUG_OUTPUT2, &ifa->address.sa); /* Ok the address may be ok */ #ifdef INET6 if (fam == AF_INET6) { /* ok to use deprecated addresses? no lets not! */ if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) { SCTPDBG(SCTP_DEBUG_OUTPUT3, "NO:1\n"); return (NULL); } if (ifa->src_is_priv && !ifa->src_is_loop) { if (dest_is_loop) { SCTPDBG(SCTP_DEBUG_OUTPUT3, "NO:2\n"); return (NULL); } } if (ifa->src_is_glob) { if (dest_is_loop) { SCTPDBG(SCTP_DEBUG_OUTPUT3, "NO:3\n"); return (NULL); } } } #endif /* * Now that we know what is what, implement or table this could in * theory be done slicker (it used to be), but this is * straightforward and easier to validate :-) */ SCTPDBG(SCTP_DEBUG_OUTPUT3, "src_loop:%d src_priv:%d src_glob:%d\n", ifa->src_is_loop, ifa->src_is_priv, ifa->src_is_glob); SCTPDBG(SCTP_DEBUG_OUTPUT3, "dest_loop:%d dest_priv:%d dest_glob:%d\n", dest_is_loop, dest_is_priv, dest_is_global); if ((ifa->src_is_loop) && (dest_is_priv)) { SCTPDBG(SCTP_DEBUG_OUTPUT3, "NO:4\n"); return (NULL); } if ((ifa->src_is_glob) && (dest_is_priv)) { SCTPDBG(SCTP_DEBUG_OUTPUT3, "NO:5\n"); return (NULL); } if ((ifa->src_is_loop) && (dest_is_global)) { SCTPDBG(SCTP_DEBUG_OUTPUT3, "NO:6\n"); return (NULL); } if ((ifa->src_is_priv) && (dest_is_global)) { SCTPDBG(SCTP_DEBUG_OUTPUT3, "NO:7\n"); return (NULL); } SCTPDBG(SCTP_DEBUG_OUTPUT3, "YES\n"); /* its a preferred address */ return (ifa); } static struct sctp_ifa * sctp_is_ifa_addr_acceptable(struct sctp_ifa *ifa, uint8_t dest_is_loop, uint8_t dest_is_priv, sa_family_t fam) { uint8_t dest_is_global = 0; /** * Here we determine if its a acceptable address. A acceptable * address means it is the same scope or higher scope but we can * allow for NAT which means its ok to have a global dest and a * private src. * * L = loopback, P = private, G = global * ----------------------------------------- * src | dest | result * ----------------------------------------- * L | L | yes * ----------------------------------------- * P | L | yes-v4 no-v6 * ----------------------------------------- * G | L | yes * ----------------------------------------- * L | P | no * ----------------------------------------- * P | P | yes * ----------------------------------------- * G | P | yes - May not work * ----------------------------------------- * L | G | no * ----------------------------------------- * P | G | yes - May not work * ----------------------------------------- * G | G | yes * ----------------------------------------- */ if (ifa->address.sa.sa_family != fam) { /* forget non matching family */ SCTPDBG(SCTP_DEBUG_OUTPUT3, "ifa_fam:%d fam:%d\n", ifa->address.sa.sa_family, fam); return (NULL); } /* Ok the address may be ok */ SCTPDBG_ADDR(SCTP_DEBUG_OUTPUT3, &ifa->address.sa); SCTPDBG(SCTP_DEBUG_OUTPUT3, "dst_is_loop:%d dest_is_priv:%d\n", dest_is_loop, dest_is_priv); if ((dest_is_loop == 0) && (dest_is_priv == 0)) { dest_is_global = 1; } #ifdef INET6 if (fam == AF_INET6) { /* ok to use deprecated addresses? */ if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) { return (NULL); } if (ifa->src_is_priv) { /* Special case, linklocal to loop */ if (dest_is_loop) return (NULL); } } #endif /* * Now that we know what is what, implement our table. This could in * theory be done slicker (it used to be), but this is * straightforward and easier to validate :-) */ SCTPDBG(SCTP_DEBUG_OUTPUT3, "ifa->src_is_loop:%d dest_is_priv:%d\n", ifa->src_is_loop, dest_is_priv); if ((ifa->src_is_loop == 1) && (dest_is_priv)) { return (NULL); } SCTPDBG(SCTP_DEBUG_OUTPUT3, "ifa->src_is_loop:%d dest_is_glob:%d\n", ifa->src_is_loop, dest_is_global); if ((ifa->src_is_loop == 1) && (dest_is_global)) { return (NULL); } SCTPDBG(SCTP_DEBUG_OUTPUT3, "address is acceptable\n"); /* its an acceptable address */ return (ifa); } int sctp_is_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa) { struct sctp_laddr *laddr; if (stcb == NULL) { /* There are no restrictions, no TCB :-) */ return (0); } LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) { if (laddr->ifa == NULL) { SCTPDBG(SCTP_DEBUG_OUTPUT1, "%s: NULL ifa\n", __func__); continue; } if (laddr->ifa == ifa) { /* Yes it is on the list */ return (1); } } return (0); } int sctp_is_addr_in_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa) { struct sctp_laddr *laddr; if (ifa == NULL) return (0); LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { if (laddr->ifa == NULL) { SCTPDBG(SCTP_DEBUG_OUTPUT1, "%s: NULL ifa\n", __func__); continue; } if ((laddr->ifa == ifa) && laddr->action == 0) /* same pointer */ return (1); } return (0); } static struct sctp_ifa * sctp_choose_boundspecific_inp(struct sctp_inpcb *inp, sctp_route_t * ro, uint32_t vrf_id, int non_asoc_addr_ok, uint8_t dest_is_priv, uint8_t dest_is_loop, sa_family_t fam) { struct sctp_laddr *laddr, *starting_point; void *ifn; int resettotop = 0; struct sctp_ifn *sctp_ifn; struct sctp_ifa *sctp_ifa, *sifa; struct sctp_vrf *vrf; uint32_t ifn_index; vrf = sctp_find_vrf(vrf_id); if (vrf == NULL) return (NULL); ifn = SCTP_GET_IFN_VOID_FROM_ROUTE(ro); ifn_index = SCTP_GET_IF_INDEX_FROM_ROUTE(ro); sctp_ifn = sctp_find_ifn(ifn, ifn_index); /* * first question, is the ifn we will emit on in our list, if so, we * want such an address. Note that we first looked for a preferred * address. */ if (sctp_ifn) { /* is a preferred one on the interface we route out? */ LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) { #ifdef INET if ((sctp_ifa->address.sa.sa_family == AF_INET) && (prison_check_ip4(inp->ip_inp.inp.inp_cred, &sctp_ifa->address.sin.sin_addr) != 0)) { continue; } #endif #ifdef INET6 if ((sctp_ifa->address.sa.sa_family == AF_INET6) && (prison_check_ip6(inp->ip_inp.inp.inp_cred, &sctp_ifa->address.sin6.sin6_addr) != 0)) { continue; } #endif if ((sctp_ifa->localifa_flags & SCTP_ADDR_DEFER_USE) && (non_asoc_addr_ok == 0)) continue; sifa = sctp_is_ifa_addr_preferred(sctp_ifa, dest_is_loop, dest_is_priv, fam); if (sifa == NULL) continue; if (sctp_is_addr_in_ep(inp, sifa)) { atomic_add_int(&sifa->refcount, 1); return (sifa); } } } /* * ok, now we now need to find one on the list of the addresses. We * can't get one on the emitting interface so let's find first a * preferred one. If not that an acceptable one otherwise... we * return NULL. */ starting_point = inp->next_addr_touse; once_again: if (inp->next_addr_touse == NULL) { inp->next_addr_touse = LIST_FIRST(&inp->sctp_addr_list); resettotop = 1; } for (laddr = inp->next_addr_touse; laddr; laddr = LIST_NEXT(laddr, sctp_nxt_addr)) { if (laddr->ifa == NULL) { /* address has been removed */ continue; } if (laddr->action == SCTP_DEL_IP_ADDRESS) { /* address is being deleted */ continue; } sifa = sctp_is_ifa_addr_preferred(laddr->ifa, dest_is_loop, dest_is_priv, fam); if (sifa == NULL) continue; atomic_add_int(&sifa->refcount, 1); return (sifa); } if (resettotop == 0) { inp->next_addr_touse = NULL; goto once_again; } inp->next_addr_touse = starting_point; resettotop = 0; once_again_too: if (inp->next_addr_touse == NULL) { inp->next_addr_touse = LIST_FIRST(&inp->sctp_addr_list); resettotop = 1; } /* ok, what about an acceptable address in the inp */ for (laddr = inp->next_addr_touse; laddr; laddr = LIST_NEXT(laddr, sctp_nxt_addr)) { if (laddr->ifa == NULL) { /* address has been removed */ continue; } if (laddr->action == SCTP_DEL_IP_ADDRESS) { /* address is being deleted */ continue; } sifa = sctp_is_ifa_addr_acceptable(laddr->ifa, dest_is_loop, dest_is_priv, fam); if (sifa == NULL) continue; atomic_add_int(&sifa->refcount, 1); return (sifa); } if (resettotop == 0) { inp->next_addr_touse = NULL; goto once_again_too; } /* * no address bound can be a source for the destination we are in * trouble */ return (NULL); } static struct sctp_ifa * sctp_choose_boundspecific_stcb(struct sctp_inpcb *inp, struct sctp_tcb *stcb, sctp_route_t * ro, uint32_t vrf_id, uint8_t dest_is_priv, uint8_t dest_is_loop, int non_asoc_addr_ok, sa_family_t fam) { struct sctp_laddr *laddr, *starting_point; void *ifn; struct sctp_ifn *sctp_ifn; struct sctp_ifa *sctp_ifa, *sifa; uint8_t start_at_beginning = 0; struct sctp_vrf *vrf; uint32_t ifn_index; /* * first question, is the ifn we will emit on in our list, if so, we * want that one. */ vrf = sctp_find_vrf(vrf_id); if (vrf == NULL) return (NULL); ifn = SCTP_GET_IFN_VOID_FROM_ROUTE(ro); ifn_index = SCTP_GET_IF_INDEX_FROM_ROUTE(ro); sctp_ifn = sctp_find_ifn(ifn, ifn_index); /* * first question, is the ifn we will emit on in our list? If so, * we want that one. First we look for a preferred. Second, we go * for an acceptable. */ if (sctp_ifn) { /* first try for a preferred address on the ep */ LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) { #ifdef INET if ((sctp_ifa->address.sa.sa_family == AF_INET) && (prison_check_ip4(inp->ip_inp.inp.inp_cred, &sctp_ifa->address.sin.sin_addr) != 0)) { continue; } #endif #ifdef INET6 if ((sctp_ifa->address.sa.sa_family == AF_INET6) && (prison_check_ip6(inp->ip_inp.inp.inp_cred, &sctp_ifa->address.sin6.sin6_addr) != 0)) { continue; } #endif if ((sctp_ifa->localifa_flags & SCTP_ADDR_DEFER_USE) && (non_asoc_addr_ok == 0)) continue; if (sctp_is_addr_in_ep(inp, sctp_ifa)) { sifa = sctp_is_ifa_addr_preferred(sctp_ifa, dest_is_loop, dest_is_priv, fam); if (sifa == NULL) continue; if (((non_asoc_addr_ok == 0) && (sctp_is_addr_restricted(stcb, sifa))) || (non_asoc_addr_ok && (sctp_is_addr_restricted(stcb, sifa)) && (!sctp_is_addr_pending(stcb, sifa)))) { /* on the no-no list */ continue; } atomic_add_int(&sifa->refcount, 1); return (sifa); } } /* next try for an acceptable address on the ep */ LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) { #ifdef INET if ((sctp_ifa->address.sa.sa_family == AF_INET) && (prison_check_ip4(inp->ip_inp.inp.inp_cred, &sctp_ifa->address.sin.sin_addr) != 0)) { continue; } #endif #ifdef INET6 if ((sctp_ifa->address.sa.sa_family == AF_INET6) && (prison_check_ip6(inp->ip_inp.inp.inp_cred, &sctp_ifa->address.sin6.sin6_addr) != 0)) { continue; } #endif if ((sctp_ifa->localifa_flags & SCTP_ADDR_DEFER_USE) && (non_asoc_addr_ok == 0)) continue; if (sctp_is_addr_in_ep(inp, sctp_ifa)) { sifa = sctp_is_ifa_addr_acceptable(sctp_ifa, dest_is_loop, dest_is_priv, fam); if (sifa == NULL) continue; if (((non_asoc_addr_ok == 0) && (sctp_is_addr_restricted(stcb, sifa))) || (non_asoc_addr_ok && (sctp_is_addr_restricted(stcb, sifa)) && (!sctp_is_addr_pending(stcb, sifa)))) { /* on the no-no list */ continue; } atomic_add_int(&sifa->refcount, 1); return (sifa); } } } /* * if we can't find one like that then we must look at all addresses * bound to pick one at first preferable then secondly acceptable. */ starting_point = stcb->asoc.last_used_address; sctp_from_the_top: if (stcb->asoc.last_used_address == NULL) { start_at_beginning = 1; stcb->asoc.last_used_address = LIST_FIRST(&inp->sctp_addr_list); } /* search beginning with the last used address */ for (laddr = stcb->asoc.last_used_address; laddr; laddr = LIST_NEXT(laddr, sctp_nxt_addr)) { if (laddr->ifa == NULL) { /* address has been removed */ continue; } if (laddr->action == SCTP_DEL_IP_ADDRESS) { /* address is being deleted */ continue; } sifa = sctp_is_ifa_addr_preferred(laddr->ifa, dest_is_loop, dest_is_priv, fam); if (sifa == NULL) continue; if (((non_asoc_addr_ok == 0) && (sctp_is_addr_restricted(stcb, sifa))) || (non_asoc_addr_ok && (sctp_is_addr_restricted(stcb, sifa)) && (!sctp_is_addr_pending(stcb, sifa)))) { /* on the no-no list */ continue; } stcb->asoc.last_used_address = laddr; atomic_add_int(&sifa->refcount, 1); return (sifa); } if (start_at_beginning == 0) { stcb->asoc.last_used_address = NULL; goto sctp_from_the_top; } /* now try for any higher scope than the destination */ stcb->asoc.last_used_address = starting_point; start_at_beginning = 0; sctp_from_the_top2: if (stcb->asoc.last_used_address == NULL) { start_at_beginning = 1; stcb->asoc.last_used_address = LIST_FIRST(&inp->sctp_addr_list); } /* search beginning with the last used address */ for (laddr = stcb->asoc.last_used_address; laddr; laddr = LIST_NEXT(laddr, sctp_nxt_addr)) { if (laddr->ifa == NULL) { /* address has been removed */ continue; } if (laddr->action == SCTP_DEL_IP_ADDRESS) { /* address is being deleted */ continue; } sifa = sctp_is_ifa_addr_acceptable(laddr->ifa, dest_is_loop, dest_is_priv, fam); if (sifa == NULL) continue; if (((non_asoc_addr_ok == 0) && (sctp_is_addr_restricted(stcb, sifa))) || (non_asoc_addr_ok && (sctp_is_addr_restricted(stcb, sifa)) && (!sctp_is_addr_pending(stcb, sifa)))) { /* on the no-no list */ continue; } stcb->asoc.last_used_address = laddr; atomic_add_int(&sifa->refcount, 1); return (sifa); } if (start_at_beginning == 0) { stcb->asoc.last_used_address = NULL; goto sctp_from_the_top2; } return (NULL); } static struct sctp_ifa * sctp_select_nth_preferred_addr_from_ifn_boundall(struct sctp_ifn *ifn, struct sctp_inpcb *inp, struct sctp_tcb *stcb, int non_asoc_addr_ok, uint8_t dest_is_loop, uint8_t dest_is_priv, int addr_wanted, sa_family_t fam, sctp_route_t * ro ) { struct sctp_ifa *ifa, *sifa; int num_eligible_addr = 0; #ifdef INET6 struct sockaddr_in6 sin6, lsa6; if (fam == AF_INET6) { memcpy(&sin6, &ro->ro_dst, sizeof(struct sockaddr_in6)); (void)sa6_recoverscope(&sin6); } #endif /* INET6 */ LIST_FOREACH(ifa, &ifn->ifalist, next_ifa) { #ifdef INET if ((ifa->address.sa.sa_family == AF_INET) && (prison_check_ip4(inp->ip_inp.inp.inp_cred, &ifa->address.sin.sin_addr) != 0)) { continue; } #endif #ifdef INET6 if ((ifa->address.sa.sa_family == AF_INET6) && (prison_check_ip6(inp->ip_inp.inp.inp_cred, &ifa->address.sin6.sin6_addr) != 0)) { continue; } #endif if ((ifa->localifa_flags & SCTP_ADDR_DEFER_USE) && (non_asoc_addr_ok == 0)) continue; sifa = sctp_is_ifa_addr_preferred(ifa, dest_is_loop, dest_is_priv, fam); if (sifa == NULL) continue; #ifdef INET6 if (fam == AF_INET6 && dest_is_loop && sifa->src_is_loop && sifa->src_is_priv) { /* * don't allow fe80::1 to be a src on loop ::1, we * don't list it to the peer so we will get an * abort. */ continue; } if (fam == AF_INET6 && IN6_IS_ADDR_LINKLOCAL(&sifa->address.sin6.sin6_addr) && IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) { /* * link-local <-> link-local must belong to the same * scope. */ memcpy(&lsa6, &sifa->address.sin6, sizeof(struct sockaddr_in6)); (void)sa6_recoverscope(&lsa6); if (sin6.sin6_scope_id != lsa6.sin6_scope_id) { continue; } } #endif /* INET6 */ /* * Check if the IPv6 address matches to next-hop. In the * mobile case, old IPv6 address may be not deleted from the * interface. Then, the interface has previous and new * addresses. We should use one corresponding to the * next-hop. (by micchie) */ #ifdef INET6 if (stcb && fam == AF_INET6 && sctp_is_mobility_feature_on(stcb->sctp_ep, SCTP_MOBILITY_BASE)) { if (sctp_v6src_match_nexthop(&sifa->address.sin6, ro) == 0) { continue; } } #endif #ifdef INET /* Avoid topologically incorrect IPv4 address */ if (stcb && fam == AF_INET && sctp_is_mobility_feature_on(stcb->sctp_ep, SCTP_MOBILITY_BASE)) { if (sctp_v4src_match_nexthop(sifa, ro) == 0) { continue; } } #endif if (stcb) { if (sctp_is_address_in_scope(ifa, &stcb->asoc.scope, 0) == 0) { continue; } if (((non_asoc_addr_ok == 0) && (sctp_is_addr_restricted(stcb, sifa))) || (non_asoc_addr_ok && (sctp_is_addr_restricted(stcb, sifa)) && (!sctp_is_addr_pending(stcb, sifa)))) { /* * It is restricted for some reason.. * probably not yet added. */ continue; } } if (num_eligible_addr >= addr_wanted) { return (sifa); } num_eligible_addr++; } return (NULL); } static int sctp_count_num_preferred_boundall(struct sctp_ifn *ifn, struct sctp_inpcb *inp, struct sctp_tcb *stcb, int non_asoc_addr_ok, uint8_t dest_is_loop, uint8_t dest_is_priv, sa_family_t fam) { struct sctp_ifa *ifa, *sifa; int num_eligible_addr = 0; LIST_FOREACH(ifa, &ifn->ifalist, next_ifa) { #ifdef INET if ((ifa->address.sa.sa_family == AF_INET) && (prison_check_ip4(inp->ip_inp.inp.inp_cred, &ifa->address.sin.sin_addr) != 0)) { continue; } #endif #ifdef INET6 if ((ifa->address.sa.sa_family == AF_INET6) && (stcb != NULL) && (prison_check_ip6(inp->ip_inp.inp.inp_cred, &ifa->address.sin6.sin6_addr) != 0)) { continue; } #endif if ((ifa->localifa_flags & SCTP_ADDR_DEFER_USE) && (non_asoc_addr_ok == 0)) { continue; } sifa = sctp_is_ifa_addr_preferred(ifa, dest_is_loop, dest_is_priv, fam); if (sifa == NULL) { continue; } if (stcb) { if (sctp_is_address_in_scope(ifa, &stcb->asoc.scope, 0) == 0) { continue; } if (((non_asoc_addr_ok == 0) && (sctp_is_addr_restricted(stcb, sifa))) || (non_asoc_addr_ok && (sctp_is_addr_restricted(stcb, sifa)) && (!sctp_is_addr_pending(stcb, sifa)))) { /* * It is restricted for some reason.. * probably not yet added. */ continue; } } num_eligible_addr++; } return (num_eligible_addr); } static struct sctp_ifa * sctp_choose_boundall(struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sctp_nets *net, sctp_route_t * ro, uint32_t vrf_id, uint8_t dest_is_priv, uint8_t dest_is_loop, int non_asoc_addr_ok, sa_family_t fam) { int cur_addr_num = 0, num_preferred = 0; void *ifn; struct sctp_ifn *sctp_ifn, *looked_at = NULL, *emit_ifn; struct sctp_ifa *sctp_ifa, *sifa; uint32_t ifn_index; struct sctp_vrf *vrf; #ifdef INET int retried = 0; #endif /*- * For boundall we can use any address in the association. * If non_asoc_addr_ok is set we can use any address (at least in * theory). So we look for preferred addresses first. If we find one, * we use it. Otherwise we next try to get an address on the * interface, which we should be able to do (unless non_asoc_addr_ok * is false and we are routed out that way). In these cases where we * can't use the address of the interface we go through all the * ifn's looking for an address we can use and fill that in. Punting * means we send back address 0, which will probably cause problems * actually since then IP will fill in the address of the route ifn, * which means we probably already rejected it.. i.e. here comes an * abort :-<. */ vrf = sctp_find_vrf(vrf_id); if (vrf == NULL) return (NULL); ifn = SCTP_GET_IFN_VOID_FROM_ROUTE(ro); ifn_index = SCTP_GET_IF_INDEX_FROM_ROUTE(ro); SCTPDBG(SCTP_DEBUG_OUTPUT2, "ifn from route:%p ifn_index:%d\n", ifn, ifn_index); emit_ifn = looked_at = sctp_ifn = sctp_find_ifn(ifn, ifn_index); if (sctp_ifn == NULL) { /* ?? We don't have this guy ?? */ SCTPDBG(SCTP_DEBUG_OUTPUT2, "No ifn emit interface?\n"); goto bound_all_plan_b; } SCTPDBG(SCTP_DEBUG_OUTPUT2, "ifn_index:%d name:%s is emit interface\n", ifn_index, sctp_ifn->ifn_name); if (net) { cur_addr_num = net->indx_of_eligible_next_to_use; } num_preferred = sctp_count_num_preferred_boundall(sctp_ifn, inp, stcb, non_asoc_addr_ok, dest_is_loop, dest_is_priv, fam); SCTPDBG(SCTP_DEBUG_OUTPUT2, "Found %d preferred source addresses for intf:%s\n", num_preferred, sctp_ifn->ifn_name); if (num_preferred == 0) { /* * no eligible addresses, we must use some other interface * address if we can find one. */ goto bound_all_plan_b; } /* * Ok we have num_eligible_addr set with how many we can use, this * may vary from call to call due to addresses being deprecated * etc.. */ if (cur_addr_num >= num_preferred) { cur_addr_num = 0; } /* * select the nth address from the list (where cur_addr_num is the * nth) and 0 is the first one, 1 is the second one etc... */ SCTPDBG(SCTP_DEBUG_OUTPUT2, "cur_addr_num:%d\n", cur_addr_num); sctp_ifa = sctp_select_nth_preferred_addr_from_ifn_boundall(sctp_ifn, inp, stcb, non_asoc_addr_ok, dest_is_loop, dest_is_priv, cur_addr_num, fam, ro); /* if sctp_ifa is NULL something changed??, fall to plan b. */ if (sctp_ifa) { atomic_add_int(&sctp_ifa->refcount, 1); if (net) { /* save off where the next one we will want */ net->indx_of_eligible_next_to_use = cur_addr_num + 1; } return (sctp_ifa); } /* * plan_b: Look at all interfaces and find a preferred address. If * no preferred fall through to plan_c. */ bound_all_plan_b: SCTPDBG(SCTP_DEBUG_OUTPUT2, "Trying Plan B\n"); LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) { SCTPDBG(SCTP_DEBUG_OUTPUT2, "Examine interface %s\n", sctp_ifn->ifn_name); if (dest_is_loop == 0 && SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) { /* wrong base scope */ SCTPDBG(SCTP_DEBUG_OUTPUT2, "skip\n"); continue; } if ((sctp_ifn == looked_at) && looked_at) { /* already looked at this guy */ SCTPDBG(SCTP_DEBUG_OUTPUT2, "already seen\n"); continue; } num_preferred = sctp_count_num_preferred_boundall(sctp_ifn, inp, stcb, non_asoc_addr_ok, dest_is_loop, dest_is_priv, fam); SCTPDBG(SCTP_DEBUG_OUTPUT2, "Found ifn:%p %d preferred source addresses\n", ifn, num_preferred); if (num_preferred == 0) { /* None on this interface. */ SCTPDBG(SCTP_DEBUG_OUTPUT2, "No prefered -- skipping to next\n"); continue; } SCTPDBG(SCTP_DEBUG_OUTPUT2, "num preferred:%d on interface:%p cur_addr_num:%d\n", num_preferred, (void *)sctp_ifn, cur_addr_num); /* * Ok we have num_eligible_addr set with how many we can * use, this may vary from call to call due to addresses * being deprecated etc.. */ if (cur_addr_num >= num_preferred) { cur_addr_num = 0; } sifa = sctp_select_nth_preferred_addr_from_ifn_boundall(sctp_ifn, inp, stcb, non_asoc_addr_ok, dest_is_loop, dest_is_priv, cur_addr_num, fam, ro); if (sifa == NULL) continue; if (net) { net->indx_of_eligible_next_to_use = cur_addr_num + 1; SCTPDBG(SCTP_DEBUG_OUTPUT2, "we selected %d\n", cur_addr_num); SCTPDBG(SCTP_DEBUG_OUTPUT2, "Source:"); SCTPDBG_ADDR(SCTP_DEBUG_OUTPUT2, &sifa->address.sa); SCTPDBG(SCTP_DEBUG_OUTPUT2, "Dest:"); SCTPDBG_ADDR(SCTP_DEBUG_OUTPUT2, &net->ro._l_addr.sa); } atomic_add_int(&sifa->refcount, 1); return (sifa); } #ifdef INET again_with_private_addresses_allowed: #endif /* plan_c: do we have an acceptable address on the emit interface */ sifa = NULL; SCTPDBG(SCTP_DEBUG_OUTPUT2, "Trying Plan C: find acceptable on interface\n"); if (emit_ifn == NULL) { SCTPDBG(SCTP_DEBUG_OUTPUT2, "Jump to Plan D - no emit_ifn\n"); goto plan_d; } LIST_FOREACH(sctp_ifa, &emit_ifn->ifalist, next_ifa) { SCTPDBG(SCTP_DEBUG_OUTPUT2, "ifa:%p\n", (void *)sctp_ifa); #ifdef INET if ((sctp_ifa->address.sa.sa_family == AF_INET) && (prison_check_ip4(inp->ip_inp.inp.inp_cred, &sctp_ifa->address.sin.sin_addr) != 0)) { SCTPDBG(SCTP_DEBUG_OUTPUT2, "Jailed\n"); continue; } #endif #ifdef INET6 if ((sctp_ifa->address.sa.sa_family == AF_INET6) && (prison_check_ip6(inp->ip_inp.inp.inp_cred, &sctp_ifa->address.sin6.sin6_addr) != 0)) { SCTPDBG(SCTP_DEBUG_OUTPUT2, "Jailed\n"); continue; } #endif if ((sctp_ifa->localifa_flags & SCTP_ADDR_DEFER_USE) && (non_asoc_addr_ok == 0)) { SCTPDBG(SCTP_DEBUG_OUTPUT2, "Defer\n"); continue; } sifa = sctp_is_ifa_addr_acceptable(sctp_ifa, dest_is_loop, dest_is_priv, fam); if (sifa == NULL) { SCTPDBG(SCTP_DEBUG_OUTPUT2, "IFA not acceptable\n"); continue; } if (stcb) { if (sctp_is_address_in_scope(sifa, &stcb->asoc.scope, 0) == 0) { SCTPDBG(SCTP_DEBUG_OUTPUT2, "NOT in scope\n"); sifa = NULL; continue; } if (((non_asoc_addr_ok == 0) && (sctp_is_addr_restricted(stcb, sifa))) || (non_asoc_addr_ok && (sctp_is_addr_restricted(stcb, sifa)) && (!sctp_is_addr_pending(stcb, sifa)))) { /* * It is restricted for some reason.. * probably not yet added. */ SCTPDBG(SCTP_DEBUG_OUTPUT2, "Its resticted\n"); sifa = NULL; continue; } } atomic_add_int(&sifa->refcount, 1); goto out; } plan_d: /* * plan_d: We are in trouble. No preferred address on the emit * interface. And not even a preferred address on all interfaces. Go * out and see if we can find an acceptable address somewhere * amongst all interfaces. */ SCTPDBG(SCTP_DEBUG_OUTPUT2, "Trying Plan D looked_at is %p\n", (void *)looked_at); LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) { if (dest_is_loop == 0 && SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) { /* wrong base scope */ continue; } LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) { #ifdef INET if ((sctp_ifa->address.sa.sa_family == AF_INET) && (prison_check_ip4(inp->ip_inp.inp.inp_cred, &sctp_ifa->address.sin.sin_addr) != 0)) { continue; } #endif #ifdef INET6 if ((sctp_ifa->address.sa.sa_family == AF_INET6) && (prison_check_ip6(inp->ip_inp.inp.inp_cred, &sctp_ifa->address.sin6.sin6_addr) != 0)) { continue; } #endif if ((sctp_ifa->localifa_flags & SCTP_ADDR_DEFER_USE) && (non_asoc_addr_ok == 0)) continue; sifa = sctp_is_ifa_addr_acceptable(sctp_ifa, dest_is_loop, dest_is_priv, fam); if (sifa == NULL) continue; if (stcb) { if (sctp_is_address_in_scope(sifa, &stcb->asoc.scope, 0) == 0) { sifa = NULL; continue; } if (((non_asoc_addr_ok == 0) && (sctp_is_addr_restricted(stcb, sifa))) || (non_asoc_addr_ok && (sctp_is_addr_restricted(stcb, sifa)) && (!sctp_is_addr_pending(stcb, sifa)))) { /* * It is restricted for some * reason.. probably not yet added. */ sifa = NULL; continue; } } goto out; } } #ifdef INET if (stcb) { if ((retried == 0) && (stcb->asoc.scope.ipv4_local_scope == 0)) { stcb->asoc.scope.ipv4_local_scope = 1; retried = 1; goto again_with_private_addresses_allowed; } else if (retried == 1) { stcb->asoc.scope.ipv4_local_scope = 0; } } #endif out: #ifdef INET if (sifa) { if (retried == 1) { LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) { if (dest_is_loop == 0 && SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) { /* wrong base scope */ continue; } LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) { struct sctp_ifa *tmp_sifa; #ifdef INET if ((sctp_ifa->address.sa.sa_family == AF_INET) && (prison_check_ip4(inp->ip_inp.inp.inp_cred, &sctp_ifa->address.sin.sin_addr) != 0)) { continue; } #endif #ifdef INET6 if ((sctp_ifa->address.sa.sa_family == AF_INET6) && (prison_check_ip6(inp->ip_inp.inp.inp_cred, &sctp_ifa->address.sin6.sin6_addr) != 0)) { continue; } #endif if ((sctp_ifa->localifa_flags & SCTP_ADDR_DEFER_USE) && (non_asoc_addr_ok == 0)) continue; tmp_sifa = sctp_is_ifa_addr_acceptable(sctp_ifa, dest_is_loop, dest_is_priv, fam); if (tmp_sifa == NULL) { continue; } if (tmp_sifa == sifa) { continue; } if (stcb) { if (sctp_is_address_in_scope(tmp_sifa, &stcb->asoc.scope, 0) == 0) { continue; } if (((non_asoc_addr_ok == 0) && (sctp_is_addr_restricted(stcb, tmp_sifa))) || (non_asoc_addr_ok && (sctp_is_addr_restricted(stcb, tmp_sifa)) && (!sctp_is_addr_pending(stcb, tmp_sifa)))) { /* * It is restricted * for some reason.. * probably not yet * added. */ continue; } } if ((tmp_sifa->address.sin.sin_family == AF_INET) && (IN4_ISPRIVATE_ADDRESS(&(tmp_sifa->address.sin.sin_addr)))) { sctp_add_local_addr_restricted(stcb, tmp_sifa); } } } } atomic_add_int(&sifa->refcount, 1); } #endif return (sifa); } /* tcb may be NULL */ struct sctp_ifa * sctp_source_address_selection(struct sctp_inpcb *inp, struct sctp_tcb *stcb, sctp_route_t * ro, struct sctp_nets *net, int non_asoc_addr_ok, uint32_t vrf_id) { struct sctp_ifa *answer; uint8_t dest_is_priv, dest_is_loop; sa_family_t fam; #ifdef INET struct sockaddr_in *to = (struct sockaddr_in *)&ro->ro_dst; #endif #ifdef INET6 struct sockaddr_in6 *to6 = (struct sockaddr_in6 *)&ro->ro_dst; #endif /** - * Rules: - Find the route if needed, cache if I can. - Look at - * interface address in route, Is it in the bound list. If so we - * have the best source. - If not we must rotate amongst the - * addresses. + * Rules: + * - Find the route if needed, cache if I can. + * - Look at interface address in route, Is it in the bound list. If so we + * have the best source. + * - If not we must rotate amongst the addresses. * * Cavets and issues * * Do we need to pay attention to scope. We can have a private address * or a global address we are sourcing or sending to. So if we draw * it out * zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz * For V4 * ------------------------------------------ * source * dest * result * ----------------------------------------- * Private * Global * NAT * ----------------------------------------- * Private * Private * No problem * ----------------------------------------- * Global * Private * Huh, How will this work? * ----------------------------------------- * Global * Global * No Problem *------------------------------------------ * zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz * For V6 *------------------------------------------ * source * dest * result * ----------------------------------------- * Linklocal * Global * * ----------------------------------------- * Linklocal * Linklocal * No problem * ----------------------------------------- * Global * Linklocal * Huh, How will this work? * ----------------------------------------- * Global * Global * No Problem *------------------------------------------ * zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz * * And then we add to that what happens if there are multiple addresses * assigned to an interface. Remember the ifa on a ifn is a linked * list of addresses. So one interface can have more than one IP * address. What happens if we have both a private and a global * address? Do we then use context of destination to sort out which * one is best? And what about NAT's sending P->G may get you a NAT * translation, or should you select the G thats on the interface in * preference. * * Decisions: * * - count the number of addresses on the interface. * - if it is one, no problem except case . * For we will assume a NAT out there. * - if there are more than one, then we need to worry about scope P * or G. We should prefer G -> G and P -> P if possible. * Then as a secondary fall back to mixed types G->P being a last * ditch one. * - The above all works for bound all, but bound specific we need to * use the same concept but instead only consider the bound * addresses. If the bound set is NOT assigned to the interface then * we must use rotation amongst the bound addresses.. */ if (ro->ro_rt == NULL) { /* * Need a route to cache. */ SCTP_RTALLOC(ro, vrf_id, inp->fibnum); } if (ro->ro_rt == NULL) { return (NULL); } fam = ro->ro_dst.sa_family; dest_is_priv = dest_is_loop = 0; /* Setup our scopes for the destination */ switch (fam) { #ifdef INET case AF_INET: /* Scope based on outbound address */ if (IN4_ISLOOPBACK_ADDRESS(&to->sin_addr)) { dest_is_loop = 1; if (net != NULL) { /* mark it as local */ net->addr_is_local = 1; } } else if ((IN4_ISPRIVATE_ADDRESS(&to->sin_addr))) { dest_is_priv = 1; } break; #endif #ifdef INET6 case AF_INET6: /* Scope based on outbound address */ if (IN6_IS_ADDR_LOOPBACK(&to6->sin6_addr) || SCTP_ROUTE_IS_REAL_LOOP(ro)) { /* * If the address is a loopback address, which * consists of "::1" OR "fe80::1%lo0", we are * loopback scope. But we don't use dest_is_priv * (link local addresses). */ dest_is_loop = 1; if (net != NULL) { /* mark it as local */ net->addr_is_local = 1; } } else if (IN6_IS_ADDR_LINKLOCAL(&to6->sin6_addr)) { dest_is_priv = 1; } break; #endif } SCTPDBG(SCTP_DEBUG_OUTPUT2, "Select source addr for:"); SCTPDBG_ADDR(SCTP_DEBUG_OUTPUT2, (struct sockaddr *)&ro->ro_dst); SCTP_IPI_ADDR_RLOCK(); if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { /* * Bound all case */ answer = sctp_choose_boundall(inp, stcb, net, ro, vrf_id, dest_is_priv, dest_is_loop, non_asoc_addr_ok, fam); SCTP_IPI_ADDR_RUNLOCK(); return (answer); } /* * Subset bound case */ if (stcb) { answer = sctp_choose_boundspecific_stcb(inp, stcb, ro, vrf_id, dest_is_priv, dest_is_loop, non_asoc_addr_ok, fam); } else { answer = sctp_choose_boundspecific_inp(inp, ro, vrf_id, non_asoc_addr_ok, dest_is_priv, dest_is_loop, fam); } SCTP_IPI_ADDR_RUNLOCK(); return (answer); } static int sctp_find_cmsg(int c_type, void *data, struct mbuf *control, size_t cpsize) { struct cmsghdr cmh; int tlen, at, found; struct sctp_sndinfo sndinfo; struct sctp_prinfo prinfo; struct sctp_authinfo authinfo; tlen = SCTP_BUF_LEN(control); at = 0; found = 0; /* * Independent of how many mbufs, find the c_type inside the control * structure and copy out the data. */ while (at < tlen) { if ((tlen - at) < (int)CMSG_ALIGN(sizeof(cmh))) { /* There is not enough room for one more. */ return (found); } m_copydata(control, at, sizeof(cmh), (caddr_t)&cmh); if (cmh.cmsg_len < CMSG_ALIGN(sizeof(cmh))) { /* We dont't have a complete CMSG header. */ return (found); } if (((int)cmh.cmsg_len + at) > tlen) { /* We don't have the complete CMSG. */ return (found); } if ((cmh.cmsg_level == IPPROTO_SCTP) && ((c_type == cmh.cmsg_type) || ((c_type == SCTP_SNDRCV) && ((cmh.cmsg_type == SCTP_SNDINFO) || (cmh.cmsg_type == SCTP_PRINFO) || (cmh.cmsg_type == SCTP_AUTHINFO))))) { if (c_type == cmh.cmsg_type) { if ((size_t)(cmh.cmsg_len - CMSG_ALIGN(sizeof(cmh))) < cpsize) { return (found); } /* It is exactly what we want. Copy it out. */ m_copydata(control, at + CMSG_ALIGN(sizeof(cmh)), (int)cpsize, (caddr_t)data); return (1); } else { struct sctp_sndrcvinfo *sndrcvinfo; sndrcvinfo = (struct sctp_sndrcvinfo *)data; if (found == 0) { if (cpsize < sizeof(struct sctp_sndrcvinfo)) { return (found); } memset(sndrcvinfo, 0, sizeof(struct sctp_sndrcvinfo)); } switch (cmh.cmsg_type) { case SCTP_SNDINFO: if ((size_t)(cmh.cmsg_len - CMSG_ALIGN(sizeof(cmh))) < sizeof(struct sctp_sndinfo)) { return (found); } m_copydata(control, at + CMSG_ALIGN(sizeof(cmh)), sizeof(struct sctp_sndinfo), (caddr_t)&sndinfo); sndrcvinfo->sinfo_stream = sndinfo.snd_sid; sndrcvinfo->sinfo_flags = sndinfo.snd_flags; sndrcvinfo->sinfo_ppid = sndinfo.snd_ppid; sndrcvinfo->sinfo_context = sndinfo.snd_context; sndrcvinfo->sinfo_assoc_id = sndinfo.snd_assoc_id; break; case SCTP_PRINFO: if ((size_t)(cmh.cmsg_len - CMSG_ALIGN(sizeof(cmh))) < sizeof(struct sctp_prinfo)) { return (found); } m_copydata(control, at + CMSG_ALIGN(sizeof(cmh)), sizeof(struct sctp_prinfo), (caddr_t)&prinfo); if (prinfo.pr_policy != SCTP_PR_SCTP_NONE) { sndrcvinfo->sinfo_timetolive = prinfo.pr_value; } else { sndrcvinfo->sinfo_timetolive = 0; } sndrcvinfo->sinfo_flags |= prinfo.pr_policy; break; case SCTP_AUTHINFO: if ((size_t)(cmh.cmsg_len - CMSG_ALIGN(sizeof(cmh))) < sizeof(struct sctp_authinfo)) { return (found); } m_copydata(control, at + CMSG_ALIGN(sizeof(cmh)), sizeof(struct sctp_authinfo), (caddr_t)&authinfo); sndrcvinfo->sinfo_keynumber_valid = 1; sndrcvinfo->sinfo_keynumber = authinfo.auth_keynumber; break; default: return (found); } found = 1; } } at += CMSG_ALIGN(cmh.cmsg_len); } return (found); } static int sctp_process_cmsgs_for_init(struct sctp_tcb *stcb, struct mbuf *control, int *error) { struct cmsghdr cmh; int tlen, at; struct sctp_initmsg initmsg; #ifdef INET struct sockaddr_in sin; #endif #ifdef INET6 struct sockaddr_in6 sin6; #endif tlen = SCTP_BUF_LEN(control); at = 0; while (at < tlen) { if ((tlen - at) < (int)CMSG_ALIGN(sizeof(cmh))) { /* There is not enough room for one more. */ *error = EINVAL; return (1); } m_copydata(control, at, sizeof(cmh), (caddr_t)&cmh); if (cmh.cmsg_len < CMSG_ALIGN(sizeof(cmh))) { /* We dont't have a complete CMSG header. */ *error = EINVAL; return (1); } if (((int)cmh.cmsg_len + at) > tlen) { /* We don't have the complete CMSG. */ *error = EINVAL; return (1); } if (cmh.cmsg_level == IPPROTO_SCTP) { switch (cmh.cmsg_type) { case SCTP_INIT: if ((size_t)(cmh.cmsg_len - CMSG_ALIGN(sizeof(cmh))) < sizeof(struct sctp_initmsg)) { *error = EINVAL; return (1); } m_copydata(control, at + CMSG_ALIGN(sizeof(cmh)), sizeof(struct sctp_initmsg), (caddr_t)&initmsg); if (initmsg.sinit_max_attempts) stcb->asoc.max_init_times = initmsg.sinit_max_attempts; if (initmsg.sinit_num_ostreams) stcb->asoc.pre_open_streams = initmsg.sinit_num_ostreams; if (initmsg.sinit_max_instreams) stcb->asoc.max_inbound_streams = initmsg.sinit_max_instreams; if (initmsg.sinit_max_init_timeo) stcb->asoc.initial_init_rto_max = initmsg.sinit_max_init_timeo; if (stcb->asoc.streamoutcnt < stcb->asoc.pre_open_streams) { struct sctp_stream_out *tmp_str; unsigned int i; #if defined(SCTP_DETAILED_STR_STATS) int j; #endif /* Default is NOT correct */ SCTPDBG(SCTP_DEBUG_OUTPUT1, "Ok, default:%d pre_open:%d\n", stcb->asoc.streamoutcnt, stcb->asoc.pre_open_streams); SCTP_TCB_UNLOCK(stcb); SCTP_MALLOC(tmp_str, struct sctp_stream_out *, (stcb->asoc.pre_open_streams * sizeof(struct sctp_stream_out)), SCTP_M_STRMO); SCTP_TCB_LOCK(stcb); if (tmp_str != NULL) { SCTP_FREE(stcb->asoc.strmout, SCTP_M_STRMO); stcb->asoc.strmout = tmp_str; stcb->asoc.strm_realoutsize = stcb->asoc.streamoutcnt = stcb->asoc.pre_open_streams; } else { stcb->asoc.pre_open_streams = stcb->asoc.streamoutcnt; } for (i = 0; i < stcb->asoc.streamoutcnt; i++) { TAILQ_INIT(&stcb->asoc.strmout[i].outqueue); stcb->asoc.strmout[i].chunks_on_queues = 0; stcb->asoc.strmout[i].next_sequence_send = 0; #if defined(SCTP_DETAILED_STR_STATS) for (j = 0; j < SCTP_PR_SCTP_MAX + 1; j++) { stcb->asoc.strmout[i].abandoned_sent[j] = 0; stcb->asoc.strmout[i].abandoned_unsent[j] = 0; } #else stcb->asoc.strmout[i].abandoned_sent[0] = 0; stcb->asoc.strmout[i].abandoned_unsent[0] = 0; #endif stcb->asoc.strmout[i].stream_no = i; stcb->asoc.strmout[i].last_msg_incomplete = 0; stcb->asoc.strmout[i].state = SCTP_STREAM_OPENING; stcb->asoc.ss_functions.sctp_ss_init_stream(&stcb->asoc.strmout[i], NULL); } } break; #ifdef INET case SCTP_DSTADDRV4: if ((size_t)(cmh.cmsg_len - CMSG_ALIGN(sizeof(cmh))) < sizeof(struct in_addr)) { *error = EINVAL; return (1); } memset(&sin, 0, sizeof(struct sockaddr_in)); sin.sin_family = AF_INET; sin.sin_len = sizeof(struct sockaddr_in); sin.sin_port = stcb->rport; m_copydata(control, at + CMSG_ALIGN(sizeof(cmh)), sizeof(struct in_addr), (caddr_t)&sin.sin_addr); if ((sin.sin_addr.s_addr == INADDR_ANY) || (sin.sin_addr.s_addr == INADDR_BROADCAST) || IN_MULTICAST(ntohl(sin.sin_addr.s_addr))) { *error = EINVAL; return (1); } if (sctp_add_remote_addr(stcb, (struct sockaddr *)&sin, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) { *error = ENOBUFS; return (1); } break; #endif #ifdef INET6 case SCTP_DSTADDRV6: if ((size_t)(cmh.cmsg_len - CMSG_ALIGN(sizeof(cmh))) < sizeof(struct in6_addr)) { *error = EINVAL; return (1); } memset(&sin6, 0, sizeof(struct sockaddr_in6)); sin6.sin6_family = AF_INET6; sin6.sin6_len = sizeof(struct sockaddr_in6); sin6.sin6_port = stcb->rport; m_copydata(control, at + CMSG_ALIGN(sizeof(cmh)), sizeof(struct in6_addr), (caddr_t)&sin6.sin6_addr); if (IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr) || IN6_IS_ADDR_MULTICAST(&sin6.sin6_addr)) { *error = EINVAL; return (1); } #ifdef INET if (IN6_IS_ADDR_V4MAPPED(&sin6.sin6_addr)) { in6_sin6_2_sin(&sin, &sin6); if ((sin.sin_addr.s_addr == INADDR_ANY) || (sin.sin_addr.s_addr == INADDR_BROADCAST) || IN_MULTICAST(ntohl(sin.sin_addr.s_addr))) { *error = EINVAL; return (1); } if (sctp_add_remote_addr(stcb, (struct sockaddr *)&sin, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) { *error = ENOBUFS; return (1); } } else #endif if (sctp_add_remote_addr(stcb, (struct sockaddr *)&sin6, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) { *error = ENOBUFS; return (1); } break; #endif default: break; } } at += CMSG_ALIGN(cmh.cmsg_len); } return (0); } static struct sctp_tcb * sctp_findassociation_cmsgs(struct sctp_inpcb **inp_p, uint16_t port, struct mbuf *control, struct sctp_nets **net_p, int *error) { struct cmsghdr cmh; int tlen, at; struct sctp_tcb *stcb; struct sockaddr *addr; #ifdef INET struct sockaddr_in sin; #endif #ifdef INET6 struct sockaddr_in6 sin6; #endif tlen = SCTP_BUF_LEN(control); at = 0; while (at < tlen) { if ((tlen - at) < (int)CMSG_ALIGN(sizeof(cmh))) { /* There is not enough room for one more. */ *error = EINVAL; return (NULL); } m_copydata(control, at, sizeof(cmh), (caddr_t)&cmh); if (cmh.cmsg_len < CMSG_ALIGN(sizeof(cmh))) { /* We dont't have a complete CMSG header. */ *error = EINVAL; return (NULL); } if (((int)cmh.cmsg_len + at) > tlen) { /* We don't have the complete CMSG. */ *error = EINVAL; return (NULL); } if (cmh.cmsg_level == IPPROTO_SCTP) { switch (cmh.cmsg_type) { #ifdef INET case SCTP_DSTADDRV4: if ((size_t)(cmh.cmsg_len - CMSG_ALIGN(sizeof(cmh))) < sizeof(struct in_addr)) { *error = EINVAL; return (NULL); } memset(&sin, 0, sizeof(struct sockaddr_in)); sin.sin_family = AF_INET; sin.sin_len = sizeof(struct sockaddr_in); sin.sin_port = port; m_copydata(control, at + CMSG_ALIGN(sizeof(cmh)), sizeof(struct in_addr), (caddr_t)&sin.sin_addr); addr = (struct sockaddr *)&sin; break; #endif #ifdef INET6 case SCTP_DSTADDRV6: if ((size_t)(cmh.cmsg_len - CMSG_ALIGN(sizeof(cmh))) < sizeof(struct in6_addr)) { *error = EINVAL; return (NULL); } memset(&sin6, 0, sizeof(struct sockaddr_in6)); sin6.sin6_family = AF_INET6; sin6.sin6_len = sizeof(struct sockaddr_in6); sin6.sin6_port = port; m_copydata(control, at + CMSG_ALIGN(sizeof(cmh)), sizeof(struct in6_addr), (caddr_t)&sin6.sin6_addr); #ifdef INET if (IN6_IS_ADDR_V4MAPPED(&sin6.sin6_addr)) { in6_sin6_2_sin(&sin, &sin6); addr = (struct sockaddr *)&sin; } else #endif addr = (struct sockaddr *)&sin6; break; #endif default: addr = NULL; break; } if (addr) { stcb = sctp_findassociation_ep_addr(inp_p, addr, net_p, NULL, NULL); if (stcb != NULL) { return (stcb); } } } at += CMSG_ALIGN(cmh.cmsg_len); } return (NULL); } static struct mbuf * sctp_add_cookie(struct mbuf *init, int init_offset, struct mbuf *initack, int initack_offset, struct sctp_state_cookie *stc_in, uint8_t ** signature) { struct mbuf *copy_init, *copy_initack, *m_at, *sig, *mret; struct sctp_state_cookie *stc; struct sctp_paramhdr *ph; uint8_t *foo; int sig_offset; uint16_t cookie_sz; mret = sctp_get_mbuf_for_msg((sizeof(struct sctp_state_cookie) + sizeof(struct sctp_paramhdr)), 0, M_NOWAIT, 1, MT_DATA); if (mret == NULL) { return (NULL); } copy_init = SCTP_M_COPYM(init, init_offset, M_COPYALL, M_NOWAIT); if (copy_init == NULL) { sctp_m_freem(mret); return (NULL); } #ifdef SCTP_MBUF_LOGGING if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) { sctp_log_mbc(copy_init, SCTP_MBUF_ICOPY); } #endif copy_initack = SCTP_M_COPYM(initack, initack_offset, M_COPYALL, M_NOWAIT); if (copy_initack == NULL) { sctp_m_freem(mret); sctp_m_freem(copy_init); return (NULL); } #ifdef SCTP_MBUF_LOGGING if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) { sctp_log_mbc(copy_initack, SCTP_MBUF_ICOPY); } #endif /* easy side we just drop it on the end */ ph = mtod(mret, struct sctp_paramhdr *); SCTP_BUF_LEN(mret) = sizeof(struct sctp_state_cookie) + sizeof(struct sctp_paramhdr); stc = (struct sctp_state_cookie *)((caddr_t)ph + sizeof(struct sctp_paramhdr)); ph->param_type = htons(SCTP_STATE_COOKIE); ph->param_length = 0; /* fill in at the end */ /* Fill in the stc cookie data */ memcpy(stc, stc_in, sizeof(struct sctp_state_cookie)); /* tack the INIT and then the INIT-ACK onto the chain */ cookie_sz = 0; for (m_at = mret; m_at; m_at = SCTP_BUF_NEXT(m_at)) { cookie_sz += SCTP_BUF_LEN(m_at); if (SCTP_BUF_NEXT(m_at) == NULL) { SCTP_BUF_NEXT(m_at) = copy_init; break; } } for (m_at = copy_init; m_at; m_at = SCTP_BUF_NEXT(m_at)) { cookie_sz += SCTP_BUF_LEN(m_at); if (SCTP_BUF_NEXT(m_at) == NULL) { SCTP_BUF_NEXT(m_at) = copy_initack; break; } } for (m_at = copy_initack; m_at; m_at = SCTP_BUF_NEXT(m_at)) { cookie_sz += SCTP_BUF_LEN(m_at); if (SCTP_BUF_NEXT(m_at) == NULL) { break; } } sig = sctp_get_mbuf_for_msg(SCTP_SECRET_SIZE, 0, M_NOWAIT, 1, MT_DATA); if (sig == NULL) { /* no space, so free the entire chain */ sctp_m_freem(mret); return (NULL); } SCTP_BUF_LEN(sig) = 0; SCTP_BUF_NEXT(m_at) = sig; sig_offset = 0; foo = (uint8_t *) (mtod(sig, caddr_t)+sig_offset); memset(foo, 0, SCTP_SIGNATURE_SIZE); *signature = foo; SCTP_BUF_LEN(sig) += SCTP_SIGNATURE_SIZE; cookie_sz += SCTP_SIGNATURE_SIZE; ph->param_length = htons(cookie_sz); return (mret); } static uint8_t sctp_get_ect(struct sctp_tcb *stcb) { if ((stcb != NULL) && (stcb->asoc.ecn_supported == 1)) { return (SCTP_ECT0_BIT); } else { return (0); } } #if defined(INET) || defined(INET6) static void sctp_handle_no_route(struct sctp_tcb *stcb, struct sctp_nets *net, int so_locked) { SCTPDBG(SCTP_DEBUG_OUTPUT1, "dropped packet - no valid source addr\n"); if (net) { SCTPDBG(SCTP_DEBUG_OUTPUT1, "Destination was "); SCTPDBG_ADDR(SCTP_DEBUG_OUTPUT1, &net->ro._l_addr.sa); if (net->dest_state & SCTP_ADDR_CONFIRMED) { if ((net->dest_state & SCTP_ADDR_REACHABLE) && stcb) { SCTPDBG(SCTP_DEBUG_OUTPUT1, "no route takes interface %p down\n", (void *)net); sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN, stcb, 0, (void *)net, so_locked); net->dest_state &= ~SCTP_ADDR_REACHABLE; net->dest_state &= ~SCTP_ADDR_PF; } } if (stcb) { if (net == stcb->asoc.primary_destination) { /* need a new primary */ struct sctp_nets *alt; alt = sctp_find_alternate_net(stcb, net, 0); if (alt != net) { if (stcb->asoc.alternate) { sctp_free_remote_addr(stcb->asoc.alternate); } stcb->asoc.alternate = alt; atomic_add_int(&stcb->asoc.alternate->ref_count, 1); if (net->ro._s_addr) { sctp_free_ifa(net->ro._s_addr); net->ro._s_addr = NULL; } net->src_addr_selected = 0; } } } } } #endif static int sctp_lowlevel_chunk_output(struct sctp_inpcb *inp, struct sctp_tcb *stcb, /* may be NULL */ struct sctp_nets *net, struct sockaddr *to, struct mbuf *m, uint32_t auth_offset, struct sctp_auth_chunk *auth, uint16_t auth_keyid, int nofragment_flag, int ecn_ok, int out_of_asoc_ok, uint16_t src_port, uint16_t dest_port, uint32_t v_tag, uint16_t port, union sctp_sockstore *over_addr, uint8_t mflowtype, uint32_t mflowid, #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) int so_locked SCTP_UNUSED #else int so_locked #endif ) /* nofragment_flag to tell if IP_DF should be set (IPv4 only) */ { /** * Given a mbuf chain (via SCTP_BUF_NEXT()) that holds a packet header * WITH an SCTPHDR but no IP header, endpoint inp and sa structure: * - fill in the HMAC digest of any AUTH chunk in the packet. * - calculate and fill in the SCTP checksum. * - prepend an IP address header. * - if boundall use INADDR_ANY. * - if boundspecific do source address selection. * - set fragmentation option for ipV4. * - On return from IP output, check/adjust mtu size of output * interface and smallest_mtu size as well. */ /* Will need ifdefs around this */ struct mbuf *newm; struct sctphdr *sctphdr; int packet_length; int ret; #if defined(INET) || defined(INET6) uint32_t vrf_id; #endif #if defined(INET) || defined(INET6) struct mbuf *o_pak; sctp_route_t *ro = NULL; struct udphdr *udp = NULL; #endif uint8_t tos_value; #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) struct socket *so = NULL; #endif if ((net) && (net->dest_state & SCTP_ADDR_OUT_OF_SCOPE)) { SCTP_LTRACE_ERR_RET_PKT(m, inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, EFAULT); sctp_m_freem(m); return (EFAULT); } #if defined(INET) || defined(INET6) if (stcb) { vrf_id = stcb->asoc.vrf_id; } else { vrf_id = inp->def_vrf_id; } #endif /* fill in the HMAC digest for any AUTH chunk in the packet */ if ((auth != NULL) && (stcb != NULL)) { sctp_fill_hmac_digest_m(m, auth_offset, auth, stcb, auth_keyid); } if (net) { tos_value = net->dscp; } else if (stcb) { tos_value = stcb->asoc.default_dscp; } else { tos_value = inp->sctp_ep.default_dscp; } switch (to->sa_family) { #ifdef INET case AF_INET: { struct ip *ip = NULL; sctp_route_t iproute; int len; len = SCTP_MIN_V4_OVERHEAD; if (port) { len += sizeof(struct udphdr); } newm = sctp_get_mbuf_for_msg(len, 1, M_NOWAIT, 1, MT_DATA); if (newm == NULL) { sctp_m_freem(m); SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, ENOMEM); return (ENOMEM); } SCTP_ALIGN_TO_END(newm, len); SCTP_BUF_LEN(newm) = len; SCTP_BUF_NEXT(newm) = m; m = newm; if (net != NULL) { m->m_pkthdr.flowid = net->flowid; M_HASHTYPE_SET(m, net->flowtype); } else { m->m_pkthdr.flowid = mflowid; M_HASHTYPE_SET(m, mflowtype); } packet_length = sctp_calculate_len(m); ip = mtod(m, struct ip *); ip->ip_v = IPVERSION; ip->ip_hl = (sizeof(struct ip) >> 2); if (tos_value == 0) { /* * This means especially, that it is not set * at the SCTP layer. So use the value from * the IP layer. */ tos_value = inp->ip_inp.inp.inp_ip_tos; } tos_value &= 0xfc; if (ecn_ok) { tos_value |= sctp_get_ect(stcb); } if ((nofragment_flag) && (port == 0)) { ip->ip_off = htons(IP_DF); } else { ip->ip_off = htons(0); } /* FreeBSD has a function for ip_id's */ ip_fillid(ip); ip->ip_ttl = inp->ip_inp.inp.inp_ip_ttl; ip->ip_len = htons(packet_length); ip->ip_tos = tos_value; if (port) { ip->ip_p = IPPROTO_UDP; } else { ip->ip_p = IPPROTO_SCTP; } ip->ip_sum = 0; if (net == NULL) { ro = &iproute; memset(&iproute, 0, sizeof(iproute)); memcpy(&ro->ro_dst, to, to->sa_len); } else { ro = (sctp_route_t *) & net->ro; } /* Now the address selection part */ ip->ip_dst.s_addr = ((struct sockaddr_in *)to)->sin_addr.s_addr; /* call the routine to select the src address */ if (net && out_of_asoc_ok == 0) { if (net->ro._s_addr && (net->ro._s_addr->localifa_flags & (SCTP_BEING_DELETED | SCTP_ADDR_IFA_UNUSEABLE))) { sctp_free_ifa(net->ro._s_addr); net->ro._s_addr = NULL; net->src_addr_selected = 0; if (ro->ro_rt) { RTFREE(ro->ro_rt); ro->ro_rt = NULL; } } if (net->src_addr_selected == 0) { /* Cache the source address */ net->ro._s_addr = sctp_source_address_selection(inp, stcb, ro, net, 0, vrf_id); net->src_addr_selected = 1; } if (net->ro._s_addr == NULL) { /* No route to host */ net->src_addr_selected = 0; sctp_handle_no_route(stcb, net, so_locked); SCTP_LTRACE_ERR_RET_PKT(m, inp, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, EHOSTUNREACH); sctp_m_freem(m); return (EHOSTUNREACH); } ip->ip_src = net->ro._s_addr->address.sin.sin_addr; } else { if (over_addr == NULL) { struct sctp_ifa *_lsrc; _lsrc = sctp_source_address_selection(inp, stcb, ro, net, out_of_asoc_ok, vrf_id); if (_lsrc == NULL) { sctp_handle_no_route(stcb, net, so_locked); SCTP_LTRACE_ERR_RET_PKT(m, inp, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, EHOSTUNREACH); sctp_m_freem(m); return (EHOSTUNREACH); } ip->ip_src = _lsrc->address.sin.sin_addr; sctp_free_ifa(_lsrc); } else { ip->ip_src = over_addr->sin.sin_addr; SCTP_RTALLOC(ro, vrf_id, inp->fibnum); } } if (port) { if (htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)) == 0) { sctp_handle_no_route(stcb, net, so_locked); SCTP_LTRACE_ERR_RET_PKT(m, inp, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, EHOSTUNREACH); sctp_m_freem(m); return (EHOSTUNREACH); } udp = (struct udphdr *)((caddr_t)ip + sizeof(struct ip)); udp->uh_sport = htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)); udp->uh_dport = port; udp->uh_ulen = htons((uint16_t) (packet_length - sizeof(struct ip))); if (V_udp_cksum) { udp->uh_sum = in_pseudo(ip->ip_src.s_addr, ip->ip_dst.s_addr, udp->uh_ulen + htons(IPPROTO_UDP)); } else { udp->uh_sum = 0; } sctphdr = (struct sctphdr *)((caddr_t)udp + sizeof(struct udphdr)); } else { sctphdr = (struct sctphdr *)((caddr_t)ip + sizeof(struct ip)); } sctphdr->src_port = src_port; sctphdr->dest_port = dest_port; sctphdr->v_tag = v_tag; sctphdr->checksum = 0; /* * If source address selection fails and we find no * route then the ip_output should fail as well with * a NO_ROUTE_TO_HOST type error. We probably should * catch that somewhere and abort the association * right away (assuming this is an INIT being sent). */ if (ro->ro_rt == NULL) { /* * src addr selection failed to find a route * (or valid source addr), so we can't get * there from here (yet)! */ sctp_handle_no_route(stcb, net, so_locked); SCTP_LTRACE_ERR_RET_PKT(m, inp, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, EHOSTUNREACH); sctp_m_freem(m); return (EHOSTUNREACH); } if (ro != &iproute) { memcpy(&iproute, ro, sizeof(*ro)); } SCTPDBG(SCTP_DEBUG_OUTPUT3, "Calling ipv4 output routine from low level src addr:%x\n", (uint32_t) (ntohl(ip->ip_src.s_addr))); SCTPDBG(SCTP_DEBUG_OUTPUT3, "Destination is %x\n", (uint32_t) (ntohl(ip->ip_dst.s_addr))); SCTPDBG(SCTP_DEBUG_OUTPUT3, "RTP route is %p through\n", (void *)ro->ro_rt); if (SCTP_GET_HEADER_FOR_OUTPUT(o_pak)) { /* failed to prepend data, give up */ SCTP_LTRACE_ERR_RET_PKT(m, inp, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, ENOMEM); sctp_m_freem(m); return (ENOMEM); } SCTP_ATTACH_CHAIN(o_pak, m, packet_length); if (port) { #if defined(SCTP_WITH_NO_CSUM) SCTP_STAT_INCR(sctps_sendnocrc); #else sctphdr->checksum = sctp_calculate_cksum(m, sizeof(struct ip) + sizeof(struct udphdr)); SCTP_STAT_INCR(sctps_sendswcrc); #endif if (V_udp_cksum) { SCTP_ENABLE_UDP_CSUM(o_pak); } } else { #if defined(SCTP_WITH_NO_CSUM) SCTP_STAT_INCR(sctps_sendnocrc); #else m->m_pkthdr.csum_flags = CSUM_SCTP; m->m_pkthdr.csum_data = offsetof(struct sctphdr, checksum); SCTP_STAT_INCR(sctps_sendhwcrc); #endif } #ifdef SCTP_PACKET_LOGGING if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LAST_PACKET_TRACING) sctp_packet_log(o_pak); #endif /* send it out. table id is taken from stcb */ #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) if ((SCTP_BASE_SYSCTL(sctp_output_unlocked)) && (so_locked)) { so = SCTP_INP_SO(inp); SCTP_SOCKET_UNLOCK(so, 0); } #endif SCTP_IP_OUTPUT(ret, o_pak, ro, stcb, vrf_id); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) if ((SCTP_BASE_SYSCTL(sctp_output_unlocked)) && (so_locked)) { atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 0); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); } #endif SCTP_STAT_INCR(sctps_sendpackets); SCTP_STAT_INCR_COUNTER64(sctps_outpackets); if (ret) SCTP_STAT_INCR(sctps_senderrors); SCTPDBG(SCTP_DEBUG_OUTPUT3, "IP output returns %d\n", ret); if (net == NULL) { /* free tempy routes */ RO_RTFREE(ro); } else { /* * PMTU check versus smallest asoc MTU goes * here */ if ((ro->ro_rt != NULL) && (net->ro._s_addr)) { uint32_t mtu; mtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, ro->ro_rt); if (net->port) { mtu -= sizeof(struct udphdr); } if (mtu && (stcb->asoc.smallest_mtu > mtu)) { sctp_mtu_size_reset(inp, &stcb->asoc, mtu); net->mtu = mtu; } } else if (ro->ro_rt == NULL) { /* route was freed */ if (net->ro._s_addr && net->src_addr_selected) { sctp_free_ifa(net->ro._s_addr); net->ro._s_addr = NULL; } net->src_addr_selected = 0; } } return (ret); } #endif #ifdef INET6 case AF_INET6: { uint32_t flowlabel, flowinfo; struct ip6_hdr *ip6h; struct route_in6 ip6route; struct ifnet *ifp; struct sockaddr_in6 *sin6, tmp, *lsa6, lsa6_tmp; int prev_scope = 0; struct sockaddr_in6 lsa6_storage; int error; u_short prev_port = 0; int len; if (net) { flowlabel = net->flowlabel; } else if (stcb) { flowlabel = stcb->asoc.default_flowlabel; } else { flowlabel = inp->sctp_ep.default_flowlabel; } if (flowlabel == 0) { /* * This means especially, that it is not set * at the SCTP layer. So use the value from * the IP layer. */ flowlabel = ntohl(((struct in6pcb *)inp)->in6p_flowinfo); } flowlabel &= 0x000fffff; len = SCTP_MIN_OVERHEAD; if (port) { len += sizeof(struct udphdr); } newm = sctp_get_mbuf_for_msg(len, 1, M_NOWAIT, 1, MT_DATA); if (newm == NULL) { sctp_m_freem(m); SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, ENOMEM); return (ENOMEM); } SCTP_ALIGN_TO_END(newm, len); SCTP_BUF_LEN(newm) = len; SCTP_BUF_NEXT(newm) = m; m = newm; if (net != NULL) { m->m_pkthdr.flowid = net->flowid; M_HASHTYPE_SET(m, net->flowtype); } else { m->m_pkthdr.flowid = mflowid; M_HASHTYPE_SET(m, mflowtype); } packet_length = sctp_calculate_len(m); ip6h = mtod(m, struct ip6_hdr *); /* protect *sin6 from overwrite */ sin6 = (struct sockaddr_in6 *)to; tmp = *sin6; sin6 = &tmp; /* KAME hack: embed scopeid */ if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) { SCTP_LTRACE_ERR_RET_PKT(m, inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, EINVAL); return (EINVAL); } if (net == NULL) { memset(&ip6route, 0, sizeof(ip6route)); ro = (sctp_route_t *) & ip6route; memcpy(&ro->ro_dst, sin6, sin6->sin6_len); } else { ro = (sctp_route_t *) & net->ro; } /* * We assume here that inp_flow is in host byte * order within the TCB! */ if (tos_value == 0) { /* * This means especially, that it is not set * at the SCTP layer. So use the value from * the IP layer. */ tos_value = (ntohl(((struct in6pcb *)inp)->in6p_flowinfo) >> 20) & 0xff; } tos_value &= 0xfc; if (ecn_ok) { tos_value |= sctp_get_ect(stcb); } flowinfo = 0x06; flowinfo <<= 8; flowinfo |= tos_value; flowinfo <<= 20; flowinfo |= flowlabel; ip6h->ip6_flow = htonl(flowinfo); if (port) { ip6h->ip6_nxt = IPPROTO_UDP; } else { ip6h->ip6_nxt = IPPROTO_SCTP; } ip6h->ip6_plen = (uint16_t) (packet_length - sizeof(struct ip6_hdr)); ip6h->ip6_dst = sin6->sin6_addr; /* * Add SRC address selection here: we can only reuse * to a limited degree the kame src-addr-sel, since * we can try their selection but it may not be * bound. */ bzero(&lsa6_tmp, sizeof(lsa6_tmp)); lsa6_tmp.sin6_family = AF_INET6; lsa6_tmp.sin6_len = sizeof(lsa6_tmp); lsa6 = &lsa6_tmp; if (net && out_of_asoc_ok == 0) { if (net->ro._s_addr && (net->ro._s_addr->localifa_flags & (SCTP_BEING_DELETED | SCTP_ADDR_IFA_UNUSEABLE))) { sctp_free_ifa(net->ro._s_addr); net->ro._s_addr = NULL; net->src_addr_selected = 0; if (ro->ro_rt) { RTFREE(ro->ro_rt); ro->ro_rt = NULL; } } if (net->src_addr_selected == 0) { sin6 = (struct sockaddr_in6 *)&net->ro._l_addr; /* KAME hack: embed scopeid */ if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) { SCTP_LTRACE_ERR_RET_PKT(m, inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, EINVAL); return (EINVAL); } /* Cache the source address */ net->ro._s_addr = sctp_source_address_selection(inp, stcb, ro, net, 0, vrf_id); (void)sa6_recoverscope(sin6); net->src_addr_selected = 1; } if (net->ro._s_addr == NULL) { SCTPDBG(SCTP_DEBUG_OUTPUT3, "V6:No route to host\n"); net->src_addr_selected = 0; sctp_handle_no_route(stcb, net, so_locked); SCTP_LTRACE_ERR_RET_PKT(m, inp, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, EHOSTUNREACH); sctp_m_freem(m); return (EHOSTUNREACH); } lsa6->sin6_addr = net->ro._s_addr->address.sin6.sin6_addr; } else { sin6 = (struct sockaddr_in6 *)&ro->ro_dst; /* KAME hack: embed scopeid */ if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) { SCTP_LTRACE_ERR_RET_PKT(m, inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, EINVAL); return (EINVAL); } if (over_addr == NULL) { struct sctp_ifa *_lsrc; _lsrc = sctp_source_address_selection(inp, stcb, ro, net, out_of_asoc_ok, vrf_id); if (_lsrc == NULL) { sctp_handle_no_route(stcb, net, so_locked); SCTP_LTRACE_ERR_RET_PKT(m, inp, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, EHOSTUNREACH); sctp_m_freem(m); return (EHOSTUNREACH); } lsa6->sin6_addr = _lsrc->address.sin6.sin6_addr; sctp_free_ifa(_lsrc); } else { lsa6->sin6_addr = over_addr->sin6.sin6_addr; SCTP_RTALLOC(ro, vrf_id, inp->fibnum); } (void)sa6_recoverscope(sin6); } lsa6->sin6_port = inp->sctp_lport; if (ro->ro_rt == NULL) { /* * src addr selection failed to find a route * (or valid source addr), so we can't get * there from here! */ sctp_handle_no_route(stcb, net, so_locked); SCTP_LTRACE_ERR_RET_PKT(m, inp, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, EHOSTUNREACH); sctp_m_freem(m); return (EHOSTUNREACH); } /* * XXX: sa6 may not have a valid sin6_scope_id in * the non-SCOPEDROUTING case. */ bzero(&lsa6_storage, sizeof(lsa6_storage)); lsa6_storage.sin6_family = AF_INET6; lsa6_storage.sin6_len = sizeof(lsa6_storage); lsa6_storage.sin6_addr = lsa6->sin6_addr; if ((error = sa6_recoverscope(&lsa6_storage)) != 0) { SCTPDBG(SCTP_DEBUG_OUTPUT3, "recover scope fails error %d\n", error); sctp_m_freem(m); return (error); } /* XXX */ lsa6_storage.sin6_addr = lsa6->sin6_addr; lsa6_storage.sin6_port = inp->sctp_lport; lsa6 = &lsa6_storage; ip6h->ip6_src = lsa6->sin6_addr; if (port) { if (htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)) == 0) { sctp_handle_no_route(stcb, net, so_locked); SCTP_LTRACE_ERR_RET_PKT(m, inp, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, EHOSTUNREACH); sctp_m_freem(m); return (EHOSTUNREACH); } udp = (struct udphdr *)((caddr_t)ip6h + sizeof(struct ip6_hdr)); udp->uh_sport = htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)); udp->uh_dport = port; udp->uh_ulen = htons((uint16_t) (packet_length - sizeof(struct ip6_hdr))); udp->uh_sum = 0; sctphdr = (struct sctphdr *)((caddr_t)udp + sizeof(struct udphdr)); } else { sctphdr = (struct sctphdr *)((caddr_t)ip6h + sizeof(struct ip6_hdr)); } sctphdr->src_port = src_port; sctphdr->dest_port = dest_port; sctphdr->v_tag = v_tag; sctphdr->checksum = 0; /* * We set the hop limit now since there is a good * chance that our ro pointer is now filled */ ip6h->ip6_hlim = SCTP_GET_HLIM(inp, ro); ifp = SCTP_GET_IFN_VOID_FROM_ROUTE(ro); #ifdef SCTP_DEBUG /* Copy to be sure something bad is not happening */ sin6->sin6_addr = ip6h->ip6_dst; lsa6->sin6_addr = ip6h->ip6_src; #endif SCTPDBG(SCTP_DEBUG_OUTPUT3, "Calling ipv6 output routine from low level\n"); SCTPDBG(SCTP_DEBUG_OUTPUT3, "src: "); SCTPDBG_ADDR(SCTP_DEBUG_OUTPUT3, (struct sockaddr *)lsa6); SCTPDBG(SCTP_DEBUG_OUTPUT3, "dst: "); SCTPDBG_ADDR(SCTP_DEBUG_OUTPUT3, (struct sockaddr *)sin6); if (net) { sin6 = (struct sockaddr_in6 *)&net->ro._l_addr; /* * preserve the port and scope for link * local send */ prev_scope = sin6->sin6_scope_id; prev_port = sin6->sin6_port; } if (SCTP_GET_HEADER_FOR_OUTPUT(o_pak)) { /* failed to prepend data, give up */ sctp_m_freem(m); SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, ENOMEM); return (ENOMEM); } SCTP_ATTACH_CHAIN(o_pak, m, packet_length); if (port) { #if defined(SCTP_WITH_NO_CSUM) SCTP_STAT_INCR(sctps_sendnocrc); #else sctphdr->checksum = sctp_calculate_cksum(m, sizeof(struct ip6_hdr) + sizeof(struct udphdr)); SCTP_STAT_INCR(sctps_sendswcrc); #endif if ((udp->uh_sum = in6_cksum(o_pak, IPPROTO_UDP, sizeof(struct ip6_hdr), packet_length - sizeof(struct ip6_hdr))) == 0) { udp->uh_sum = 0xffff; } } else { #if defined(SCTP_WITH_NO_CSUM) SCTP_STAT_INCR(sctps_sendnocrc); #else m->m_pkthdr.csum_flags = CSUM_SCTP_IPV6; m->m_pkthdr.csum_data = offsetof(struct sctphdr, checksum); SCTP_STAT_INCR(sctps_sendhwcrc); #endif } /* send it out. table id is taken from stcb */ #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) if ((SCTP_BASE_SYSCTL(sctp_output_unlocked)) && (so_locked)) { so = SCTP_INP_SO(inp); SCTP_SOCKET_UNLOCK(so, 0); } #endif #ifdef SCTP_PACKET_LOGGING if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LAST_PACKET_TRACING) sctp_packet_log(o_pak); #endif SCTP_IP6_OUTPUT(ret, o_pak, (struct route_in6 *)ro, &ifp, stcb, vrf_id); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) if ((SCTP_BASE_SYSCTL(sctp_output_unlocked)) && (so_locked)) { atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 0); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); } #endif if (net) { /* for link local this must be done */ sin6->sin6_scope_id = prev_scope; sin6->sin6_port = prev_port; } SCTPDBG(SCTP_DEBUG_OUTPUT3, "return from send is %d\n", ret); SCTP_STAT_INCR(sctps_sendpackets); SCTP_STAT_INCR_COUNTER64(sctps_outpackets); if (ret) { SCTP_STAT_INCR(sctps_senderrors); } if (net == NULL) { /* Now if we had a temp route free it */ RO_RTFREE(ro); } else { /* * PMTU check versus smallest asoc MTU goes * here */ if (ro->ro_rt == NULL) { /* Route was freed */ if (net->ro._s_addr && net->src_addr_selected) { sctp_free_ifa(net->ro._s_addr); net->ro._s_addr = NULL; } net->src_addr_selected = 0; } if ((ro->ro_rt != NULL) && (net->ro._s_addr)) { uint32_t mtu; mtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, ro->ro_rt); if (mtu && (stcb->asoc.smallest_mtu > mtu)) { sctp_mtu_size_reset(inp, &stcb->asoc, mtu); net->mtu = mtu; if (net->port) { net->mtu -= sizeof(struct udphdr); } } } else if (ifp) { if (ND_IFINFO(ifp)->linkmtu && (stcb->asoc.smallest_mtu > ND_IFINFO(ifp)->linkmtu)) { sctp_mtu_size_reset(inp, &stcb->asoc, ND_IFINFO(ifp)->linkmtu); } } } return (ret); } #endif default: SCTPDBG(SCTP_DEBUG_OUTPUT1, "Unknown protocol (TSNH) type %d\n", ((struct sockaddr *)to)->sa_family); sctp_m_freem(m); SCTP_LTRACE_ERR_RET_PKT(m, inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, EFAULT); return (EFAULT); } } void sctp_send_initiate(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ) { struct mbuf *m, *m_last; struct sctp_nets *net; struct sctp_init_chunk *init; struct sctp_supported_addr_param *sup_addr; struct sctp_adaptation_layer_indication *ali; struct sctp_supported_chunk_types_param *pr_supported; struct sctp_paramhdr *ph; int cnt_inits_to = 0; int ret; uint16_t num_ext, chunk_len, padding_len, parameter_len; /* INIT's always go to the primary (and usually ONLY address) */ net = stcb->asoc.primary_destination; if (net == NULL) { net = TAILQ_FIRST(&stcb->asoc.nets); if (net == NULL) { /* TSNH */ return; } /* we confirm any address we send an INIT to */ net->dest_state &= ~SCTP_ADDR_UNCONFIRMED; (void)sctp_set_primary_addr(stcb, NULL, net); } else { /* we confirm any address we send an INIT to */ net->dest_state &= ~SCTP_ADDR_UNCONFIRMED; } SCTPDBG(SCTP_DEBUG_OUTPUT4, "Sending INIT\n"); #ifdef INET6 if (net->ro._l_addr.sa.sa_family == AF_INET6) { /* * special hook, if we are sending to link local it will not * show up in our private address count. */ if (IN6_IS_ADDR_LINKLOCAL(&net->ro._l_addr.sin6.sin6_addr)) cnt_inits_to = 1; } #endif if (SCTP_OS_TIMER_PENDING(&net->rxt_timer.timer)) { /* This case should not happen */ SCTPDBG(SCTP_DEBUG_OUTPUT4, "Sending INIT - failed timer?\n"); return; } /* start the INIT timer */ sctp_timer_start(SCTP_TIMER_TYPE_INIT, inp, stcb, net); m = sctp_get_mbuf_for_msg(MCLBYTES, 1, M_NOWAIT, 1, MT_DATA); if (m == NULL) { /* No memory, INIT timer will re-attempt. */ SCTPDBG(SCTP_DEBUG_OUTPUT4, "Sending INIT - mbuf?\n"); return; } chunk_len = (uint16_t) sizeof(struct sctp_init_chunk); padding_len = 0; /* Now lets put the chunk header in place */ init = mtod(m, struct sctp_init_chunk *); /* now the chunk header */ init->ch.chunk_type = SCTP_INITIATION; init->ch.chunk_flags = 0; /* fill in later from mbuf we build */ init->ch.chunk_length = 0; /* place in my tag */ init->init.initiate_tag = htonl(stcb->asoc.my_vtag); /* set up some of the credits. */ init->init.a_rwnd = htonl(max(inp->sctp_socket ? SCTP_SB_LIMIT_RCV(inp->sctp_socket) : 0, SCTP_MINIMAL_RWND)); init->init.num_outbound_streams = htons(stcb->asoc.pre_open_streams); init->init.num_inbound_streams = htons(stcb->asoc.max_inbound_streams); init->init.initial_tsn = htonl(stcb->asoc.init_seq_number); /* Adaptation layer indication parameter */ if (inp->sctp_ep.adaptation_layer_indicator_provided) { parameter_len = (uint16_t) sizeof(struct sctp_adaptation_layer_indication); ali = (struct sctp_adaptation_layer_indication *)(mtod(m, caddr_t)+chunk_len); ali->ph.param_type = htons(SCTP_ULP_ADAPTATION); ali->ph.param_length = htons(parameter_len); ali->indication = htonl(inp->sctp_ep.adaptation_layer_indicator); chunk_len += parameter_len; } /* ECN parameter */ if (stcb->asoc.ecn_supported == 1) { parameter_len = (uint16_t) sizeof(struct sctp_paramhdr); ph = (struct sctp_paramhdr *)(mtod(m, caddr_t)+chunk_len); ph->param_type = htons(SCTP_ECN_CAPABLE); ph->param_length = htons(parameter_len); chunk_len += parameter_len; } /* PR-SCTP supported parameter */ if (stcb->asoc.prsctp_supported == 1) { parameter_len = (uint16_t) sizeof(struct sctp_paramhdr); ph = (struct sctp_paramhdr *)(mtod(m, caddr_t)+chunk_len); ph->param_type = htons(SCTP_PRSCTP_SUPPORTED); ph->param_length = htons(parameter_len); chunk_len += parameter_len; } /* Add NAT friendly parameter. */ if (SCTP_BASE_SYSCTL(sctp_inits_include_nat_friendly)) { parameter_len = (uint16_t) sizeof(struct sctp_paramhdr); ph = (struct sctp_paramhdr *)(mtod(m, caddr_t)+chunk_len); ph->param_type = htons(SCTP_HAS_NAT_SUPPORT); ph->param_length = htons(parameter_len); chunk_len += parameter_len; } /* And now tell the peer which extensions we support */ num_ext = 0; pr_supported = (struct sctp_supported_chunk_types_param *)(mtod(m, caddr_t)+chunk_len); if (stcb->asoc.prsctp_supported == 1) { pr_supported->chunk_types[num_ext++] = SCTP_FORWARD_CUM_TSN; + if (stcb->asoc.idata_supported) { + pr_supported->chunk_types[num_ext++] = SCTP_IFORWARD_CUM_TSN; + } } if (stcb->asoc.auth_supported == 1) { pr_supported->chunk_types[num_ext++] = SCTP_AUTHENTICATION; } if (stcb->asoc.asconf_supported == 1) { pr_supported->chunk_types[num_ext++] = SCTP_ASCONF; pr_supported->chunk_types[num_ext++] = SCTP_ASCONF_ACK; } if (stcb->asoc.reconfig_supported == 1) { pr_supported->chunk_types[num_ext++] = SCTP_STREAM_RESET; } + if (stcb->asoc.idata_supported) { + pr_supported->chunk_types[num_ext++] = SCTP_IDATA; + } if (stcb->asoc.nrsack_supported == 1) { pr_supported->chunk_types[num_ext++] = SCTP_NR_SELECTIVE_ACK; } if (stcb->asoc.pktdrop_supported == 1) { pr_supported->chunk_types[num_ext++] = SCTP_PACKET_DROPPED; } if (num_ext > 0) { parameter_len = (uint16_t) sizeof(struct sctp_supported_chunk_types_param) + num_ext; pr_supported->ph.param_type = htons(SCTP_SUPPORTED_CHUNK_EXT); pr_supported->ph.param_length = htons(parameter_len); padding_len = SCTP_SIZE32(parameter_len) - parameter_len; chunk_len += parameter_len; } /* add authentication parameters */ if (stcb->asoc.auth_supported) { /* attach RANDOM parameter, if available */ if (stcb->asoc.authinfo.random != NULL) { struct sctp_auth_random *randp; if (padding_len > 0) { memset(mtod(m, caddr_t)+chunk_len, 0, padding_len); chunk_len += padding_len; padding_len = 0; } randp = (struct sctp_auth_random *)(mtod(m, caddr_t)+chunk_len); parameter_len = (uint16_t) sizeof(struct sctp_auth_random) + stcb->asoc.authinfo.random_len; /* random key already contains the header */ memcpy(randp, stcb->asoc.authinfo.random->key, parameter_len); padding_len = SCTP_SIZE32(parameter_len) - parameter_len; chunk_len += parameter_len; } /* add HMAC_ALGO parameter */ if (stcb->asoc.local_hmacs != NULL) { struct sctp_auth_hmac_algo *hmacs; if (padding_len > 0) { memset(mtod(m, caddr_t)+chunk_len, 0, padding_len); chunk_len += padding_len; padding_len = 0; } hmacs = (struct sctp_auth_hmac_algo *)(mtod(m, caddr_t)+chunk_len); parameter_len = (uint16_t) (sizeof(struct sctp_auth_hmac_algo) + stcb->asoc.local_hmacs->num_algo * sizeof(uint16_t)); hmacs->ph.param_type = htons(SCTP_HMAC_LIST); hmacs->ph.param_length = htons(parameter_len); sctp_serialize_hmaclist(stcb->asoc.local_hmacs, (uint8_t *) hmacs->hmac_ids); padding_len = SCTP_SIZE32(parameter_len) - parameter_len; chunk_len += parameter_len; } /* add CHUNKS parameter */ if (stcb->asoc.local_auth_chunks != NULL) { struct sctp_auth_chunk_list *chunks; if (padding_len > 0) { memset(mtod(m, caddr_t)+chunk_len, 0, padding_len); chunk_len += padding_len; padding_len = 0; } chunks = (struct sctp_auth_chunk_list *)(mtod(m, caddr_t)+chunk_len); parameter_len = (uint16_t) (sizeof(struct sctp_auth_chunk_list) + sctp_auth_get_chklist_size(stcb->asoc.local_auth_chunks)); chunks->ph.param_type = htons(SCTP_CHUNK_LIST); chunks->ph.param_length = htons(parameter_len); sctp_serialize_auth_chunks(stcb->asoc.local_auth_chunks, chunks->chunk_types); padding_len = SCTP_SIZE32(parameter_len) - parameter_len; chunk_len += parameter_len; } } /* now any cookie time extensions */ if (stcb->asoc.cookie_preserve_req) { struct sctp_cookie_perserve_param *cookie_preserve; if (padding_len > 0) { memset(mtod(m, caddr_t)+chunk_len, 0, padding_len); chunk_len += padding_len; padding_len = 0; } parameter_len = (uint16_t) sizeof(struct sctp_cookie_perserve_param); cookie_preserve = (struct sctp_cookie_perserve_param *)(mtod(m, caddr_t)+chunk_len); cookie_preserve->ph.param_type = htons(SCTP_COOKIE_PRESERVE); cookie_preserve->ph.param_length = htons(parameter_len); cookie_preserve->time = htonl(stcb->asoc.cookie_preserve_req); stcb->asoc.cookie_preserve_req = 0; chunk_len += parameter_len; } if (stcb->asoc.scope.ipv4_addr_legal || stcb->asoc.scope.ipv6_addr_legal) { uint8_t i; if (padding_len > 0) { memset(mtod(m, caddr_t)+chunk_len, 0, padding_len); chunk_len += padding_len; padding_len = 0; } parameter_len = (uint16_t) sizeof(struct sctp_paramhdr); if (stcb->asoc.scope.ipv4_addr_legal) { parameter_len += (uint16_t) sizeof(uint16_t); } if (stcb->asoc.scope.ipv6_addr_legal) { parameter_len += (uint16_t) sizeof(uint16_t); } sup_addr = (struct sctp_supported_addr_param *)(mtod(m, caddr_t)+chunk_len); sup_addr->ph.param_type = htons(SCTP_SUPPORTED_ADDRTYPE); sup_addr->ph.param_length = htons(parameter_len); i = 0; if (stcb->asoc.scope.ipv4_addr_legal) { sup_addr->addr_type[i++] = htons(SCTP_IPV4_ADDRESS); } if (stcb->asoc.scope.ipv6_addr_legal) { sup_addr->addr_type[i++] = htons(SCTP_IPV6_ADDRESS); } padding_len = 4 - 2 * i; chunk_len += parameter_len; } SCTP_BUF_LEN(m) = chunk_len; /* now the addresses */ /* * To optimize this we could put the scoping stuff into a structure * and remove the individual uint8's from the assoc structure. Then * we could just sifa in the address within the stcb. But for now * this is a quick hack to get the address stuff teased apart. */ m_last = sctp_add_addresses_to_i_ia(inp, stcb, &stcb->asoc.scope, m, cnt_inits_to, &padding_len, &chunk_len); init->ch.chunk_length = htons(chunk_len); if (padding_len > 0) { if (sctp_add_pad_tombuf(m_last, padding_len) == NULL) { sctp_m_freem(m); return; } } SCTPDBG(SCTP_DEBUG_OUTPUT4, "Sending INIT - calls lowlevel_output\n"); ret = sctp_lowlevel_chunk_output(inp, stcb, net, (struct sockaddr *)&net->ro._l_addr, m, 0, NULL, 0, 0, 0, 0, inp->sctp_lport, stcb->rport, htonl(0), net->port, NULL, 0, 0, so_locked); SCTPDBG(SCTP_DEBUG_OUTPUT4, "lowlevel_output - %d\n", ret); SCTP_STAT_INCR_COUNTER64(sctps_outcontrolchunks); (void)SCTP_GETTIME_TIMEVAL(&net->last_sent_time); } struct mbuf * sctp_arethere_unrecognized_parameters(struct mbuf *in_initpkt, int param_offset, int *abort_processing, struct sctp_chunkhdr *cp, int *nat_friendly) { /* * Given a mbuf containing an INIT or INIT-ACK with the param_offset * being equal to the beginning of the params i.e. (iphlen + * sizeof(struct sctp_init_msg) parse through the parameters to the * end of the mbuf verifying that all parameters are known. * * For unknown parameters build and return a mbuf with * UNRECOGNIZED_PARAMETER errors. If the flags indicate to stop * processing this chunk stop, and set *abort_processing to 1. * * By having param_offset be pre-set to where parameters begin it is * hoped that this routine may be reused in the future by new * features. */ struct sctp_paramhdr *phdr, params; struct mbuf *mat, *op_err; char tempbuf[SCTP_PARAM_BUFFER_SIZE]; int at, limit, pad_needed; uint16_t ptype, plen, padded_size; int err_at; *abort_processing = 0; mat = in_initpkt; err_at = 0; limit = ntohs(cp->chunk_length) - sizeof(struct sctp_init_chunk); at = param_offset; op_err = NULL; SCTPDBG(SCTP_DEBUG_OUTPUT1, "Check for unrecognized param's\n"); phdr = sctp_get_next_param(mat, at, ¶ms, sizeof(params)); while ((phdr != NULL) && ((size_t)limit >= sizeof(struct sctp_paramhdr))) { ptype = ntohs(phdr->param_type); plen = ntohs(phdr->param_length); if ((plen > limit) || (plen < sizeof(struct sctp_paramhdr))) { /* wacked parameter */ SCTPDBG(SCTP_DEBUG_OUTPUT1, "Invalid size - error %d\n", plen); goto invalid_size; } limit -= SCTP_SIZE32(plen); /*- * All parameters for all chunks that we know/understand are * listed here. We process them other places and make * appropriate stop actions per the upper bits. However this * is the generic routine processor's can call to get back * an operr.. to either incorporate (init-ack) or send. */ padded_size = SCTP_SIZE32(plen); switch (ptype) { /* Param's with variable size */ case SCTP_HEARTBEAT_INFO: case SCTP_STATE_COOKIE: case SCTP_UNRECOG_PARAM: case SCTP_ERROR_CAUSE_IND: /* ok skip fwd */ at += padded_size; break; /* Param's with variable size within a range */ case SCTP_CHUNK_LIST: case SCTP_SUPPORTED_CHUNK_EXT: if (padded_size > (sizeof(struct sctp_supported_chunk_types_param) + (sizeof(uint8_t) * SCTP_MAX_SUPPORTED_EXT))) { SCTPDBG(SCTP_DEBUG_OUTPUT1, "Invalid size - error chklist %d\n", plen); goto invalid_size; } at += padded_size; break; case SCTP_SUPPORTED_ADDRTYPE: if (padded_size > SCTP_MAX_ADDR_PARAMS_SIZE) { SCTPDBG(SCTP_DEBUG_OUTPUT1, "Invalid size - error supaddrtype %d\n", plen); goto invalid_size; } at += padded_size; break; case SCTP_RANDOM: if (padded_size > (sizeof(struct sctp_auth_random) + SCTP_RANDOM_MAX_SIZE)) { SCTPDBG(SCTP_DEBUG_OUTPUT1, "Invalid size - error random %d\n", plen); goto invalid_size; } at += padded_size; break; case SCTP_SET_PRIM_ADDR: case SCTP_DEL_IP_ADDRESS: case SCTP_ADD_IP_ADDRESS: if ((padded_size != sizeof(struct sctp_asconf_addrv4_param)) && (padded_size != sizeof(struct sctp_asconf_addr_param))) { SCTPDBG(SCTP_DEBUG_OUTPUT1, "Invalid size - error setprim %d\n", plen); goto invalid_size; } at += padded_size; break; /* Param's with a fixed size */ case SCTP_IPV4_ADDRESS: if (padded_size != sizeof(struct sctp_ipv4addr_param)) { SCTPDBG(SCTP_DEBUG_OUTPUT1, "Invalid size - error ipv4 addr %d\n", plen); goto invalid_size; } at += padded_size; break; case SCTP_IPV6_ADDRESS: if (padded_size != sizeof(struct sctp_ipv6addr_param)) { SCTPDBG(SCTP_DEBUG_OUTPUT1, "Invalid size - error ipv6 addr %d\n", plen); goto invalid_size; } at += padded_size; break; case SCTP_COOKIE_PRESERVE: if (padded_size != sizeof(struct sctp_cookie_perserve_param)) { SCTPDBG(SCTP_DEBUG_OUTPUT1, "Invalid size - error cookie-preserve %d\n", plen); goto invalid_size; } at += padded_size; break; case SCTP_HAS_NAT_SUPPORT: *nat_friendly = 1; /* fall through */ case SCTP_PRSCTP_SUPPORTED: if (padded_size != sizeof(struct sctp_paramhdr)) { SCTPDBG(SCTP_DEBUG_OUTPUT1, "Invalid size - error prsctp/nat support %d\n", plen); goto invalid_size; } at += padded_size; break; case SCTP_ECN_CAPABLE: if (padded_size != sizeof(struct sctp_paramhdr)) { SCTPDBG(SCTP_DEBUG_OUTPUT1, "Invalid size - error ecn %d\n", plen); goto invalid_size; } at += padded_size; break; case SCTP_ULP_ADAPTATION: if (padded_size != sizeof(struct sctp_adaptation_layer_indication)) { SCTPDBG(SCTP_DEBUG_OUTPUT1, "Invalid size - error adapatation %d\n", plen); goto invalid_size; } at += padded_size; break; case SCTP_SUCCESS_REPORT: if (padded_size != sizeof(struct sctp_asconf_paramhdr)) { SCTPDBG(SCTP_DEBUG_OUTPUT1, "Invalid size - error success %d\n", plen); goto invalid_size; } at += padded_size; break; case SCTP_HOSTNAME_ADDRESS: { /* We can NOT handle HOST NAME addresses!! */ int l_len; SCTPDBG(SCTP_DEBUG_OUTPUT1, "Can't handle hostname addresses.. abort processing\n"); *abort_processing = 1; if (op_err == NULL) { /* Ok need to try to get a mbuf */ #ifdef INET6 l_len = SCTP_MIN_OVERHEAD; #else l_len = SCTP_MIN_V4_OVERHEAD; #endif l_len += sizeof(struct sctp_chunkhdr); l_len += plen; l_len += sizeof(struct sctp_paramhdr); op_err = sctp_get_mbuf_for_msg(l_len, 0, M_NOWAIT, 1, MT_DATA); if (op_err) { SCTP_BUF_LEN(op_err) = 0; /* * pre-reserve space for ip * and sctp header and * chunk hdr */ #ifdef INET6 SCTP_BUF_RESV_UF(op_err, sizeof(struct ip6_hdr)); #else SCTP_BUF_RESV_UF(op_err, sizeof(struct ip)); #endif SCTP_BUF_RESV_UF(op_err, sizeof(struct sctphdr)); SCTP_BUF_RESV_UF(op_err, sizeof(struct sctp_chunkhdr)); } } if (op_err) { /* If we have space */ struct sctp_paramhdr s; if (err_at % 4) { uint32_t cpthis = 0; pad_needed = 4 - (err_at % 4); m_copyback(op_err, err_at, pad_needed, (caddr_t)&cpthis); err_at += pad_needed; } s.param_type = htons(SCTP_CAUSE_UNRESOLVABLE_ADDR); s.param_length = htons(sizeof(s) + plen); m_copyback(op_err, err_at, sizeof(s), (caddr_t)&s); err_at += sizeof(s); phdr = sctp_get_next_param(mat, at, (struct sctp_paramhdr *)tempbuf, min(sizeof(tempbuf), plen)); if (phdr == NULL) { sctp_m_freem(op_err); /* * we are out of memory but * we still need to have a * look at what to do (the * system is in trouble * though). */ return (NULL); } m_copyback(op_err, err_at, plen, (caddr_t)phdr); } return (op_err); break; } default: /* * we do not recognize the parameter figure out what * we do. */ SCTPDBG(SCTP_DEBUG_OUTPUT1, "Hit default param %x\n", ptype); if ((ptype & 0x4000) == 0x4000) { /* Report bit is set?? */ SCTPDBG(SCTP_DEBUG_OUTPUT1, "report op err\n"); if (op_err == NULL) { int l_len; /* Ok need to try to get an mbuf */ #ifdef INET6 l_len = SCTP_MIN_OVERHEAD; #else l_len = SCTP_MIN_V4_OVERHEAD; #endif l_len += sizeof(struct sctp_chunkhdr); l_len += plen; l_len += sizeof(struct sctp_paramhdr); op_err = sctp_get_mbuf_for_msg(l_len, 0, M_NOWAIT, 1, MT_DATA); if (op_err) { SCTP_BUF_LEN(op_err) = 0; #ifdef INET6 SCTP_BUF_RESV_UF(op_err, sizeof(struct ip6_hdr)); #else SCTP_BUF_RESV_UF(op_err, sizeof(struct ip)); #endif SCTP_BUF_RESV_UF(op_err, sizeof(struct sctphdr)); SCTP_BUF_RESV_UF(op_err, sizeof(struct sctp_chunkhdr)); } } if (op_err) { /* If we have space */ struct sctp_paramhdr s; if (err_at % 4) { uint32_t cpthis = 0; pad_needed = 4 - (err_at % 4); m_copyback(op_err, err_at, pad_needed, (caddr_t)&cpthis); err_at += pad_needed; } s.param_type = htons(SCTP_UNRECOG_PARAM); s.param_length = htons(sizeof(s) + plen); m_copyback(op_err, err_at, sizeof(s), (caddr_t)&s); err_at += sizeof(s); if (plen > sizeof(tempbuf)) { plen = sizeof(tempbuf); } phdr = sctp_get_next_param(mat, at, (struct sctp_paramhdr *)tempbuf, min(sizeof(tempbuf), plen)); if (phdr == NULL) { sctp_m_freem(op_err); /* * we are out of memory but * we still need to have a * look at what to do (the * system is in trouble * though). */ op_err = NULL; goto more_processing; } m_copyback(op_err, err_at, plen, (caddr_t)phdr); err_at += plen; } } more_processing: if ((ptype & 0x8000) == 0x0000) { SCTPDBG(SCTP_DEBUG_OUTPUT1, "stop proc\n"); return (op_err); } else { /* skip this chunk and continue processing */ SCTPDBG(SCTP_DEBUG_OUTPUT1, "move on\n"); at += SCTP_SIZE32(plen); } break; } phdr = sctp_get_next_param(mat, at, ¶ms, sizeof(params)); } return (op_err); invalid_size: SCTPDBG(SCTP_DEBUG_OUTPUT1, "abort flag set\n"); *abort_processing = 1; if ((op_err == NULL) && phdr) { int l_len; #ifdef INET6 l_len = SCTP_MIN_OVERHEAD; #else l_len = SCTP_MIN_V4_OVERHEAD; #endif l_len += sizeof(struct sctp_chunkhdr); l_len += (2 * sizeof(struct sctp_paramhdr)); op_err = sctp_get_mbuf_for_msg(l_len, 0, M_NOWAIT, 1, MT_DATA); if (op_err) { SCTP_BUF_LEN(op_err) = 0; #ifdef INET6 SCTP_BUF_RESV_UF(op_err, sizeof(struct ip6_hdr)); #else SCTP_BUF_RESV_UF(op_err, sizeof(struct ip)); #endif SCTP_BUF_RESV_UF(op_err, sizeof(struct sctphdr)); SCTP_BUF_RESV_UF(op_err, sizeof(struct sctp_chunkhdr)); } } if ((op_err) && phdr) { struct sctp_paramhdr s; if (err_at % 4) { uint32_t cpthis = 0; pad_needed = 4 - (err_at % 4); m_copyback(op_err, err_at, pad_needed, (caddr_t)&cpthis); err_at += pad_needed; } s.param_type = htons(SCTP_CAUSE_PROTOCOL_VIOLATION); s.param_length = htons(sizeof(s) + sizeof(struct sctp_paramhdr)); m_copyback(op_err, err_at, sizeof(s), (caddr_t)&s); err_at += sizeof(s); /* Only copy back the p-hdr that caused the issue */ m_copyback(op_err, err_at, sizeof(struct sctp_paramhdr), (caddr_t)phdr); } return (op_err); } static int sctp_are_there_new_addresses(struct sctp_association *asoc, struct mbuf *in_initpkt, int offset, struct sockaddr *src) { /* * Given a INIT packet, look through the packet to verify that there * are NO new addresses. As we go through the parameters add reports * of any un-understood parameters that require an error. Also we * must return (1) to drop the packet if we see a un-understood * parameter that tells us to drop the chunk. */ struct sockaddr *sa_touse; struct sockaddr *sa; struct sctp_paramhdr *phdr, params; uint16_t ptype, plen; uint8_t fnd; struct sctp_nets *net; int check_src; #ifdef INET struct sockaddr_in sin4, *sa4; #endif #ifdef INET6 struct sockaddr_in6 sin6, *sa6; #endif #ifdef INET memset(&sin4, 0, sizeof(sin4)); sin4.sin_family = AF_INET; sin4.sin_len = sizeof(sin4); #endif #ifdef INET6 memset(&sin6, 0, sizeof(sin6)); sin6.sin6_family = AF_INET6; sin6.sin6_len = sizeof(sin6); #endif /* First what about the src address of the pkt ? */ check_src = 0; switch (src->sa_family) { #ifdef INET case AF_INET: if (asoc->scope.ipv4_addr_legal) { check_src = 1; } break; #endif #ifdef INET6 case AF_INET6: if (asoc->scope.ipv6_addr_legal) { check_src = 1; } break; #endif default: /* TSNH */ break; } if (check_src) { fnd = 0; TAILQ_FOREACH(net, &asoc->nets, sctp_next) { sa = (struct sockaddr *)&net->ro._l_addr; if (sa->sa_family == src->sa_family) { #ifdef INET if (sa->sa_family == AF_INET) { struct sockaddr_in *src4; sa4 = (struct sockaddr_in *)sa; src4 = (struct sockaddr_in *)src; if (sa4->sin_addr.s_addr == src4->sin_addr.s_addr) { fnd = 1; break; } } #endif #ifdef INET6 if (sa->sa_family == AF_INET6) { struct sockaddr_in6 *src6; sa6 = (struct sockaddr_in6 *)sa; src6 = (struct sockaddr_in6 *)src; if (SCTP6_ARE_ADDR_EQUAL(sa6, src6)) { fnd = 1; break; } } #endif } } if (fnd == 0) { /* New address added! no need to look futher. */ return (1); } } /* Ok so far lets munge through the rest of the packet */ offset += sizeof(struct sctp_init_chunk); phdr = sctp_get_next_param(in_initpkt, offset, ¶ms, sizeof(params)); while (phdr) { sa_touse = NULL; ptype = ntohs(phdr->param_type); plen = ntohs(phdr->param_length); switch (ptype) { #ifdef INET case SCTP_IPV4_ADDRESS: { struct sctp_ipv4addr_param *p4, p4_buf; phdr = sctp_get_next_param(in_initpkt, offset, (struct sctp_paramhdr *)&p4_buf, sizeof(p4_buf)); if (plen != sizeof(struct sctp_ipv4addr_param) || phdr == NULL) { return (1); } if (asoc->scope.ipv4_addr_legal) { p4 = (struct sctp_ipv4addr_param *)phdr; sin4.sin_addr.s_addr = p4->addr; sa_touse = (struct sockaddr *)&sin4; } break; } #endif #ifdef INET6 case SCTP_IPV6_ADDRESS: { struct sctp_ipv6addr_param *p6, p6_buf; phdr = sctp_get_next_param(in_initpkt, offset, (struct sctp_paramhdr *)&p6_buf, sizeof(p6_buf)); if (plen != sizeof(struct sctp_ipv6addr_param) || phdr == NULL) { return (1); } if (asoc->scope.ipv6_addr_legal) { p6 = (struct sctp_ipv6addr_param *)phdr; memcpy((caddr_t)&sin6.sin6_addr, p6->addr, sizeof(p6->addr)); sa_touse = (struct sockaddr *)&sin6; } break; } #endif default: sa_touse = NULL; break; } if (sa_touse) { /* ok, sa_touse points to one to check */ fnd = 0; TAILQ_FOREACH(net, &asoc->nets, sctp_next) { sa = (struct sockaddr *)&net->ro._l_addr; if (sa->sa_family != sa_touse->sa_family) { continue; } #ifdef INET if (sa->sa_family == AF_INET) { sa4 = (struct sockaddr_in *)sa; if (sa4->sin_addr.s_addr == sin4.sin_addr.s_addr) { fnd = 1; break; } } #endif #ifdef INET6 if (sa->sa_family == AF_INET6) { sa6 = (struct sockaddr_in6 *)sa; if (SCTP6_ARE_ADDR_EQUAL( sa6, &sin6)) { fnd = 1; break; } } #endif } if (!fnd) { /* New addr added! no need to look further */ return (1); } } offset += SCTP_SIZE32(plen); phdr = sctp_get_next_param(in_initpkt, offset, ¶ms, sizeof(params)); } return (0); } /* * Given a MBUF chain that was sent into us containing an INIT. Build a * INIT-ACK with COOKIE and send back. We assume that the in_initpkt has done * a pullup to include IPv6/4header, SCTP header and initial part of INIT * message (i.e. the struct sctp_init_msg). */ void sctp_send_initiate_ack(struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sctp_nets *src_net, struct mbuf *init_pkt, int iphlen, int offset, struct sockaddr *src, struct sockaddr *dst, struct sctphdr *sh, struct sctp_init_chunk *init_chk, uint8_t mflowtype, uint32_t mflowid, uint32_t vrf_id, uint16_t port, int hold_inp_lock) { struct sctp_association *asoc; struct mbuf *m, *m_tmp, *m_last, *m_cookie, *op_err; struct sctp_init_ack_chunk *initack; struct sctp_adaptation_layer_indication *ali; struct sctp_supported_chunk_types_param *pr_supported; struct sctp_paramhdr *ph; union sctp_sockstore *over_addr; struct sctp_scoping scp; #ifdef INET struct sockaddr_in *dst4 = (struct sockaddr_in *)dst; struct sockaddr_in *src4 = (struct sockaddr_in *)src; struct sockaddr_in *sin; #endif #ifdef INET6 struct sockaddr_in6 *dst6 = (struct sockaddr_in6 *)dst; struct sockaddr_in6 *src6 = (struct sockaddr_in6 *)src; struct sockaddr_in6 *sin6; #endif struct sockaddr *to; struct sctp_state_cookie stc; struct sctp_nets *net = NULL; uint8_t *signature = NULL; int cnt_inits_to = 0; uint16_t his_limit, i_want; int abort_flag; int nat_friendly = 0; struct socket *so; uint16_t num_ext, chunk_len, padding_len, parameter_len; if (stcb) { asoc = &stcb->asoc; } else { asoc = NULL; } if ((asoc != NULL) && (SCTP_GET_STATE(asoc) != SCTP_STATE_COOKIE_WAIT)) { if (sctp_are_there_new_addresses(asoc, init_pkt, offset, src)) { /* * new addresses, out of here in non-cookie-wait * states * * Send an ABORT, without the new address error cause. * This looks no different than if no listener was * present. */ op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), "Address added"); sctp_send_abort(init_pkt, iphlen, src, dst, sh, 0, op_err, mflowtype, mflowid, inp->fibnum, vrf_id, port); return; } if (src_net != NULL && (src_net->port != port)) { /* * change of remote encapsulation port, out of here * in non-cookie-wait states * * Send an ABORT, without an specific error cause. This * looks no different than if no listener was * present. */ op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), "Remote encapsulation port changed"); sctp_send_abort(init_pkt, iphlen, src, dst, sh, 0, op_err, mflowtype, mflowid, inp->fibnum, vrf_id, port); return; } } abort_flag = 0; op_err = sctp_arethere_unrecognized_parameters(init_pkt, (offset + sizeof(struct sctp_init_chunk)), &abort_flag, (struct sctp_chunkhdr *)init_chk, &nat_friendly); if (abort_flag) { do_a_abort: if (op_err == NULL) { char msg[SCTP_DIAG_INFO_LEN]; snprintf(msg, sizeof(msg), "%s:%d at %s", __FILE__, __LINE__, __func__); op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), msg); } sctp_send_abort(init_pkt, iphlen, src, dst, sh, init_chk->init.initiate_tag, op_err, mflowtype, mflowid, inp->fibnum, vrf_id, port); return; } m = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA); if (m == NULL) { /* No memory, INIT timer will re-attempt. */ if (op_err) sctp_m_freem(op_err); return; } chunk_len = (uint16_t) sizeof(struct sctp_init_ack_chunk); padding_len = 0; /* * We might not overwrite the identification[] completely and on * some platforms time_entered will contain some padding. Therefore * zero out the cookie to avoid putting uninitialized memory on the * wire. */ memset(&stc, 0, sizeof(struct sctp_state_cookie)); /* the time I built cookie */ (void)SCTP_GETTIME_TIMEVAL(&stc.time_entered); /* populate any tie tags */ if (asoc != NULL) { /* unlock before tag selections */ stc.tie_tag_my_vtag = asoc->my_vtag_nonce; stc.tie_tag_peer_vtag = asoc->peer_vtag_nonce; stc.cookie_life = asoc->cookie_life; net = asoc->primary_destination; } else { stc.tie_tag_my_vtag = 0; stc.tie_tag_peer_vtag = 0; /* life I will award this cookie */ stc.cookie_life = inp->sctp_ep.def_cookie_life; } /* copy in the ports for later check */ stc.myport = sh->dest_port; stc.peerport = sh->src_port; /* * If we wanted to honor cookie life extentions, we would add to * stc.cookie_life. For now we should NOT honor any extension */ stc.site_scope = stc.local_scope = stc.loopback_scope = 0; if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { stc.ipv6_addr_legal = 1; if (SCTP_IPV6_V6ONLY(inp)) { stc.ipv4_addr_legal = 0; } else { stc.ipv4_addr_legal = 1; } } else { stc.ipv6_addr_legal = 0; stc.ipv4_addr_legal = 1; } stc.ipv4_scope = 0; if (net == NULL) { to = src; switch (dst->sa_family) { #ifdef INET case AF_INET: { /* lookup address */ stc.address[0] = src4->sin_addr.s_addr; stc.address[1] = 0; stc.address[2] = 0; stc.address[3] = 0; stc.addr_type = SCTP_IPV4_ADDRESS; /* local from address */ stc.laddress[0] = dst4->sin_addr.s_addr; stc.laddress[1] = 0; stc.laddress[2] = 0; stc.laddress[3] = 0; stc.laddr_type = SCTP_IPV4_ADDRESS; /* scope_id is only for v6 */ stc.scope_id = 0; if ((IN4_ISPRIVATE_ADDRESS(&src4->sin_addr)) || (IN4_ISPRIVATE_ADDRESS(&dst4->sin_addr))) { stc.ipv4_scope = 1; } /* Must use the address in this case */ if (sctp_is_address_on_local_host(src, vrf_id)) { stc.loopback_scope = 1; stc.ipv4_scope = 1; stc.site_scope = 1; stc.local_scope = 0; } break; } #endif #ifdef INET6 case AF_INET6: { stc.addr_type = SCTP_IPV6_ADDRESS; memcpy(&stc.address, &src6->sin6_addr, sizeof(struct in6_addr)); stc.scope_id = in6_getscope(&src6->sin6_addr); if (sctp_is_address_on_local_host(src, vrf_id)) { stc.loopback_scope = 1; stc.local_scope = 0; stc.site_scope = 1; stc.ipv4_scope = 1; } else if (IN6_IS_ADDR_LINKLOCAL(&src6->sin6_addr) || IN6_IS_ADDR_LINKLOCAL(&dst6->sin6_addr)) { /* * If the new destination or source * is a LINK_LOCAL we must have * common both site and local scope. * Don't set local scope though * since we must depend on the * source to be added implicitly. We * cannot assure just because we * share one link that all links are * common. */ stc.local_scope = 0; stc.site_scope = 1; stc.ipv4_scope = 1; /* * we start counting for the private * address stuff at 1. since the * link local we source from won't * show up in our scoped count. */ cnt_inits_to = 1; /* * pull out the scope_id from * incoming pkt */ } else if (IN6_IS_ADDR_SITELOCAL(&src6->sin6_addr) || IN6_IS_ADDR_SITELOCAL(&dst6->sin6_addr)) { /* * If the new destination or source * is SITE_LOCAL then we must have * site scope in common. */ stc.site_scope = 1; } memcpy(&stc.laddress, &dst6->sin6_addr, sizeof(struct in6_addr)); stc.laddr_type = SCTP_IPV6_ADDRESS; break; } #endif default: /* TSNH */ goto do_a_abort; break; } } else { /* set the scope per the existing tcb */ #ifdef INET6 struct sctp_nets *lnet; #endif stc.loopback_scope = asoc->scope.loopback_scope; stc.ipv4_scope = asoc->scope.ipv4_local_scope; stc.site_scope = asoc->scope.site_scope; stc.local_scope = asoc->scope.local_scope; #ifdef INET6 /* Why do we not consider IPv4 LL addresses? */ TAILQ_FOREACH(lnet, &asoc->nets, sctp_next) { if (lnet->ro._l_addr.sin6.sin6_family == AF_INET6) { if (IN6_IS_ADDR_LINKLOCAL(&lnet->ro._l_addr.sin6.sin6_addr)) { /* * if we have a LL address, start * counting at 1. */ cnt_inits_to = 1; } } } #endif /* use the net pointer */ to = (struct sockaddr *)&net->ro._l_addr; switch (to->sa_family) { #ifdef INET case AF_INET: sin = (struct sockaddr_in *)to; stc.address[0] = sin->sin_addr.s_addr; stc.address[1] = 0; stc.address[2] = 0; stc.address[3] = 0; stc.addr_type = SCTP_IPV4_ADDRESS; if (net->src_addr_selected == 0) { /* * strange case here, the INIT should have * did the selection. */ net->ro._s_addr = sctp_source_address_selection(inp, stcb, (sctp_route_t *) & net->ro, net, 0, vrf_id); if (net->ro._s_addr == NULL) return; net->src_addr_selected = 1; } stc.laddress[0] = net->ro._s_addr->address.sin.sin_addr.s_addr; stc.laddress[1] = 0; stc.laddress[2] = 0; stc.laddress[3] = 0; stc.laddr_type = SCTP_IPV4_ADDRESS; /* scope_id is only for v6 */ stc.scope_id = 0; break; #endif #ifdef INET6 case AF_INET6: sin6 = (struct sockaddr_in6 *)to; memcpy(&stc.address, &sin6->sin6_addr, sizeof(struct in6_addr)); stc.addr_type = SCTP_IPV6_ADDRESS; stc.scope_id = sin6->sin6_scope_id; if (net->src_addr_selected == 0) { /* * strange case here, the INIT should have * done the selection. */ net->ro._s_addr = sctp_source_address_selection(inp, stcb, (sctp_route_t *) & net->ro, net, 0, vrf_id); if (net->ro._s_addr == NULL) return; net->src_addr_selected = 1; } memcpy(&stc.laddress, &net->ro._s_addr->address.sin6.sin6_addr, sizeof(struct in6_addr)); stc.laddr_type = SCTP_IPV6_ADDRESS; break; #endif } } /* Now lets put the SCTP header in place */ initack = mtod(m, struct sctp_init_ack_chunk *); /* Save it off for quick ref */ stc.peers_vtag = init_chk->init.initiate_tag; /* who are we */ memcpy(stc.identification, SCTP_VERSION_STRING, min(strlen(SCTP_VERSION_STRING), sizeof(stc.identification))); memset(stc.reserved, 0, SCTP_RESERVE_SPACE); /* now the chunk header */ initack->ch.chunk_type = SCTP_INITIATION_ACK; initack->ch.chunk_flags = 0; /* fill in later from mbuf we build */ initack->ch.chunk_length = 0; /* place in my tag */ if ((asoc != NULL) && ((SCTP_GET_STATE(asoc) == SCTP_STATE_COOKIE_WAIT) || (SCTP_GET_STATE(asoc) == SCTP_STATE_INUSE) || (SCTP_GET_STATE(asoc) == SCTP_STATE_COOKIE_ECHOED))) { /* re-use the v-tags and init-seq here */ initack->init.initiate_tag = htonl(asoc->my_vtag); initack->init.initial_tsn = htonl(asoc->init_seq_number); } else { uint32_t vtag, itsn; if (hold_inp_lock) { SCTP_INP_INCR_REF(inp); SCTP_INP_RUNLOCK(inp); } if (asoc) { atomic_add_int(&asoc->refcnt, 1); SCTP_TCB_UNLOCK(stcb); new_tag: vtag = sctp_select_a_tag(inp, inp->sctp_lport, sh->src_port, 1); if ((asoc->peer_supports_nat) && (vtag == asoc->my_vtag)) { /* * Got a duplicate vtag on some guy behind a * nat make sure we don't use it. */ goto new_tag; } initack->init.initiate_tag = htonl(vtag); /* get a TSN to use too */ itsn = sctp_select_initial_TSN(&inp->sctp_ep); initack->init.initial_tsn = htonl(itsn); SCTP_TCB_LOCK(stcb); atomic_add_int(&asoc->refcnt, -1); } else { vtag = sctp_select_a_tag(inp, inp->sctp_lport, sh->src_port, 1); initack->init.initiate_tag = htonl(vtag); /* get a TSN to use too */ initack->init.initial_tsn = htonl(sctp_select_initial_TSN(&inp->sctp_ep)); } if (hold_inp_lock) { SCTP_INP_RLOCK(inp); SCTP_INP_DECR_REF(inp); } } /* save away my tag to */ stc.my_vtag = initack->init.initiate_tag; /* set up some of the credits. */ so = inp->sctp_socket; if (so == NULL) { /* memory problem */ sctp_m_freem(m); return; } else { initack->init.a_rwnd = htonl(max(SCTP_SB_LIMIT_RCV(so), SCTP_MINIMAL_RWND)); } /* set what I want */ his_limit = ntohs(init_chk->init.num_inbound_streams); /* choose what I want */ if (asoc != NULL) { if (asoc->streamoutcnt > asoc->pre_open_streams) { i_want = asoc->streamoutcnt; } else { i_want = asoc->pre_open_streams; } } else { i_want = inp->sctp_ep.pre_open_stream_count; } if (his_limit < i_want) { /* I Want more :< */ initack->init.num_outbound_streams = init_chk->init.num_inbound_streams; } else { /* I can have what I want :> */ initack->init.num_outbound_streams = htons(i_want); } /* tell him his limit. */ initack->init.num_inbound_streams = htons(inp->sctp_ep.max_open_streams_intome); /* adaptation layer indication parameter */ if (inp->sctp_ep.adaptation_layer_indicator_provided) { parameter_len = (uint16_t) sizeof(struct sctp_adaptation_layer_indication); ali = (struct sctp_adaptation_layer_indication *)(mtod(m, caddr_t)+chunk_len); ali->ph.param_type = htons(SCTP_ULP_ADAPTATION); ali->ph.param_length = htons(parameter_len); ali->indication = htonl(inp->sctp_ep.adaptation_layer_indicator); chunk_len += parameter_len; } /* ECN parameter */ if (((asoc != NULL) && (asoc->ecn_supported == 1)) || ((asoc == NULL) && (inp->ecn_supported == 1))) { parameter_len = (uint16_t) sizeof(struct sctp_paramhdr); ph = (struct sctp_paramhdr *)(mtod(m, caddr_t)+chunk_len); ph->param_type = htons(SCTP_ECN_CAPABLE); ph->param_length = htons(parameter_len); chunk_len += parameter_len; } /* PR-SCTP supported parameter */ if (((asoc != NULL) && (asoc->prsctp_supported == 1)) || ((asoc == NULL) && (inp->prsctp_supported == 1))) { parameter_len = (uint16_t) sizeof(struct sctp_paramhdr); ph = (struct sctp_paramhdr *)(mtod(m, caddr_t)+chunk_len); ph->param_type = htons(SCTP_PRSCTP_SUPPORTED); ph->param_length = htons(parameter_len); chunk_len += parameter_len; } /* Add NAT friendly parameter */ if (nat_friendly) { parameter_len = (uint16_t) sizeof(struct sctp_paramhdr); ph = (struct sctp_paramhdr *)(mtod(m, caddr_t)+chunk_len); ph->param_type = htons(SCTP_HAS_NAT_SUPPORT); ph->param_length = htons(parameter_len); chunk_len += parameter_len; } /* And now tell the peer which extensions we support */ num_ext = 0; pr_supported = (struct sctp_supported_chunk_types_param *)(mtod(m, caddr_t)+chunk_len); if (((asoc != NULL) && (asoc->prsctp_supported == 1)) || ((asoc == NULL) && (inp->prsctp_supported == 1))) { pr_supported->chunk_types[num_ext++] = SCTP_FORWARD_CUM_TSN; + if (((asoc != NULL) && (asoc->idata_supported == 1)) || + ((asoc == NULL) && (inp->idata_supported == 1))) { + pr_supported->chunk_types[num_ext++] = SCTP_IFORWARD_CUM_TSN; + } } if (((asoc != NULL) && (asoc->auth_supported == 1)) || ((asoc == NULL) && (inp->auth_supported == 1))) { pr_supported->chunk_types[num_ext++] = SCTP_AUTHENTICATION; } if (((asoc != NULL) && (asoc->asconf_supported == 1)) || ((asoc == NULL) && (inp->asconf_supported == 1))) { pr_supported->chunk_types[num_ext++] = SCTP_ASCONF; pr_supported->chunk_types[num_ext++] = SCTP_ASCONF_ACK; } if (((asoc != NULL) && (asoc->reconfig_supported == 1)) || ((asoc == NULL) && (inp->reconfig_supported == 1))) { pr_supported->chunk_types[num_ext++] = SCTP_STREAM_RESET; } + if (((asoc != NULL) && (asoc->idata_supported == 1)) || + ((asoc == NULL) && (inp->idata_supported == 1))) { + pr_supported->chunk_types[num_ext++] = SCTP_IDATA; + } if (((asoc != NULL) && (asoc->nrsack_supported == 1)) || ((asoc == NULL) && (inp->nrsack_supported == 1))) { pr_supported->chunk_types[num_ext++] = SCTP_NR_SELECTIVE_ACK; } if (((asoc != NULL) && (asoc->pktdrop_supported == 1)) || ((asoc == NULL) && (inp->pktdrop_supported == 1))) { pr_supported->chunk_types[num_ext++] = SCTP_PACKET_DROPPED; } if (num_ext > 0) { parameter_len = (uint16_t) sizeof(struct sctp_supported_chunk_types_param) + num_ext; pr_supported->ph.param_type = htons(SCTP_SUPPORTED_CHUNK_EXT); pr_supported->ph.param_length = htons(parameter_len); padding_len = SCTP_SIZE32(parameter_len) - parameter_len; chunk_len += parameter_len; } /* add authentication parameters */ if (((asoc != NULL) && (asoc->auth_supported == 1)) || ((asoc == NULL) && (inp->auth_supported == 1))) { struct sctp_auth_random *randp; struct sctp_auth_hmac_algo *hmacs; struct sctp_auth_chunk_list *chunks; if (padding_len > 0) { memset(mtod(m, caddr_t)+chunk_len, 0, padding_len); chunk_len += padding_len; padding_len = 0; } /* generate and add RANDOM parameter */ randp = (struct sctp_auth_random *)(mtod(m, caddr_t)+chunk_len); parameter_len = (uint16_t) sizeof(struct sctp_auth_random) + SCTP_AUTH_RANDOM_SIZE_DEFAULT; randp->ph.param_type = htons(SCTP_RANDOM); randp->ph.param_length = htons(parameter_len); SCTP_READ_RANDOM(randp->random_data, SCTP_AUTH_RANDOM_SIZE_DEFAULT); padding_len = SCTP_SIZE32(parameter_len) - parameter_len; chunk_len += parameter_len; if (padding_len > 0) { memset(mtod(m, caddr_t)+chunk_len, 0, padding_len); chunk_len += padding_len; padding_len = 0; } /* add HMAC_ALGO parameter */ hmacs = (struct sctp_auth_hmac_algo *)(mtod(m, caddr_t)+chunk_len); parameter_len = (uint16_t) sizeof(struct sctp_auth_hmac_algo) + sctp_serialize_hmaclist(inp->sctp_ep.local_hmacs, (uint8_t *) hmacs->hmac_ids); hmacs->ph.param_type = htons(SCTP_HMAC_LIST); hmacs->ph.param_length = htons(parameter_len); padding_len = SCTP_SIZE32(parameter_len) - parameter_len; chunk_len += parameter_len; if (padding_len > 0) { memset(mtod(m, caddr_t)+chunk_len, 0, padding_len); chunk_len += padding_len; padding_len = 0; } /* add CHUNKS parameter */ chunks = (struct sctp_auth_chunk_list *)(mtod(m, caddr_t)+chunk_len); parameter_len = (uint16_t) sizeof(struct sctp_auth_chunk_list) + sctp_serialize_auth_chunks(inp->sctp_ep.local_auth_chunks, chunks->chunk_types); chunks->ph.param_type = htons(SCTP_CHUNK_LIST); chunks->ph.param_length = htons(parameter_len); padding_len = SCTP_SIZE32(parameter_len) - parameter_len; chunk_len += parameter_len; } SCTP_BUF_LEN(m) = chunk_len; m_last = m; /* now the addresses */ /* * To optimize this we could put the scoping stuff into a structure * and remove the individual uint8's from the stc structure. Then we * could just sifa in the address within the stc.. but for now this * is a quick hack to get the address stuff teased apart. */ scp.ipv4_addr_legal = stc.ipv4_addr_legal; scp.ipv6_addr_legal = stc.ipv6_addr_legal; scp.loopback_scope = stc.loopback_scope; scp.ipv4_local_scope = stc.ipv4_scope; scp.local_scope = stc.local_scope; scp.site_scope = stc.site_scope; m_last = sctp_add_addresses_to_i_ia(inp, stcb, &scp, m_last, cnt_inits_to, &padding_len, &chunk_len); /* padding_len can only be positive, if no addresses have been added */ if (padding_len > 0) { memset(mtod(m, caddr_t)+chunk_len, 0, padding_len); chunk_len += padding_len; SCTP_BUF_LEN(m) += padding_len; padding_len = 0; } /* tack on the operational error if present */ if (op_err) { parameter_len = 0; for (m_tmp = op_err; m_tmp != NULL; m_tmp = SCTP_BUF_NEXT(m_tmp)) { parameter_len += SCTP_BUF_LEN(m_tmp); } padding_len = SCTP_SIZE32(parameter_len) - parameter_len; SCTP_BUF_NEXT(m_last) = op_err; while (SCTP_BUF_NEXT(m_last) != NULL) { m_last = SCTP_BUF_NEXT(m_last); } chunk_len += parameter_len; } if (padding_len > 0) { m_last = sctp_add_pad_tombuf(m_last, padding_len); if (m_last == NULL) { /* Houston we have a problem, no space */ sctp_m_freem(m); return; } chunk_len += padding_len; padding_len = 0; } /* Now we must build a cookie */ m_cookie = sctp_add_cookie(init_pkt, offset, m, 0, &stc, &signature); if (m_cookie == NULL) { /* memory problem */ sctp_m_freem(m); return; } /* Now append the cookie to the end and update the space/size */ SCTP_BUF_NEXT(m_last) = m_cookie; parameter_len = 0; for (m_tmp = m_cookie; m_tmp != NULL; m_tmp = SCTP_BUF_NEXT(m_tmp)) { parameter_len += SCTP_BUF_LEN(m_tmp); if (SCTP_BUF_NEXT(m_tmp) == NULL) { m_last = m_tmp; } } padding_len = SCTP_SIZE32(parameter_len) - parameter_len; chunk_len += parameter_len; /* * Place in the size, but we don't include the last pad (if any) in * the INIT-ACK. */ initack->ch.chunk_length = htons(chunk_len); /* * Time to sign the cookie, we don't sign over the cookie signature * though thus we set trailer. */ (void)sctp_hmac_m(SCTP_HMAC, (uint8_t *) inp->sctp_ep.secret_key[(int)(inp->sctp_ep.current_secret_number)], SCTP_SECRET_SIZE, m_cookie, sizeof(struct sctp_paramhdr), (uint8_t *) signature, SCTP_SIGNATURE_SIZE); /* * We sifa 0 here to NOT set IP_DF if its IPv4, we ignore the return * here since the timer will drive a retranmission. */ if (padding_len > 0) { if (sctp_add_pad_tombuf(m_last, padding_len) == NULL) { sctp_m_freem(m); return; } } if (stc.loopback_scope) { over_addr = (union sctp_sockstore *)dst; } else { over_addr = NULL; } (void)sctp_lowlevel_chunk_output(inp, NULL, NULL, to, m, 0, NULL, 0, 0, 0, 0, inp->sctp_lport, sh->src_port, init_chk->init.initiate_tag, port, over_addr, mflowtype, mflowid, SCTP_SO_NOT_LOCKED); SCTP_STAT_INCR_COUNTER64(sctps_outcontrolchunks); } static void sctp_prune_prsctp(struct sctp_tcb *stcb, struct sctp_association *asoc, struct sctp_sndrcvinfo *srcv, int dataout) { int freed_spc = 0; struct sctp_tmit_chunk *chk, *nchk; SCTP_TCB_LOCK_ASSERT(stcb); if ((asoc->prsctp_supported) && (asoc->sent_queue_cnt_removeable > 0)) { TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) { /* * Look for chunks marked with the PR_SCTP flag AND * the buffer space flag. If the one being sent is * equal or greater priority then purge the old one * and free some space. */ if (PR_SCTP_BUF_ENABLED(chk->flags)) { /* * This one is PR-SCTP AND buffer space * limited type */ if (chk->rec.data.timetodrop.tv_sec >= (long)srcv->sinfo_timetolive) { /* * Lower numbers equates to higher * priority so if the one we are * looking at has a larger or equal * priority we want to drop the data * and NOT retransmit it. */ if (chk->data) { /* * We release the book_size * if the mbuf is here */ int ret_spc; uint8_t sent; if (chk->sent > SCTP_DATAGRAM_UNSENT) sent = 1; else sent = 0; ret_spc = sctp_release_pr_sctp_chunk(stcb, chk, sent, SCTP_SO_LOCKED); freed_spc += ret_spc; if (freed_spc >= dataout) { return; } } /* if chunk was present */ } /* if of sufficent priority */ } /* if chunk has enabled */ } /* tailqforeach */ TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) { /* Here we must move to the sent queue and mark */ if (PR_SCTP_BUF_ENABLED(chk->flags)) { if (chk->rec.data.timetodrop.tv_sec >= (long)srcv->sinfo_timetolive) { if (chk->data) { /* * We release the book_size * if the mbuf is here */ int ret_spc; ret_spc = sctp_release_pr_sctp_chunk(stcb, chk, 0, SCTP_SO_LOCKED); freed_spc += ret_spc; if (freed_spc >= dataout) { return; } } /* end if chk->data */ } /* end if right class */ } /* end if chk pr-sctp */ } /* tailqforeachsafe (chk) */ } /* if enabled in asoc */ } int sctp_get_frag_point(struct sctp_tcb *stcb, struct sctp_association *asoc) { int siz, ovh; /* * For endpoints that have both v6 and v4 addresses we must reserve * room for the ipv6 header, for those that are only dealing with V4 * we use a larger frag point. */ if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { - ovh = SCTP_MED_OVERHEAD; + ovh = SCTP_MIN_OVERHEAD; } else { - ovh = SCTP_MED_V4_OVERHEAD; + ovh = SCTP_MIN_V4_OVERHEAD; } - + if (stcb->asoc.idata_supported) { + ovh += sizeof(struct sctp_idata_chunk); + } else { + ovh += sizeof(struct sctp_data_chunk); + } if (stcb->asoc.sctp_frag_point > asoc->smallest_mtu) siz = asoc->smallest_mtu - ovh; else siz = (stcb->asoc.sctp_frag_point - ovh); /* * if (siz > (MCLBYTES-sizeof(struct sctp_data_chunk))) { */ /* A data chunk MUST fit in a cluster */ /* siz = (MCLBYTES - sizeof(struct sctp_data_chunk)); */ /* } */ /* adjust for an AUTH chunk if DATA requires auth */ if (sctp_auth_is_required_chunk(SCTP_DATA, stcb->asoc.peer_auth_chunks)) siz -= sctp_get_auth_chunk_len(stcb->asoc.peer_hmac_id); if (siz % 4) { /* make it an even word boundary please */ siz -= (siz % 4); } return (siz); } static void sctp_set_prsctp_policy(struct sctp_stream_queue_pending *sp) { /* * We assume that the user wants PR_SCTP_TTL if the user provides a * positive lifetime but does not specify any PR_SCTP policy. */ if (PR_SCTP_ENABLED(sp->sinfo_flags)) { sp->act_flags |= PR_SCTP_POLICY(sp->sinfo_flags); } else if (sp->timetolive > 0) { sp->sinfo_flags |= SCTP_PR_SCTP_TTL; sp->act_flags |= PR_SCTP_POLICY(sp->sinfo_flags); } else { return; } switch (PR_SCTP_POLICY(sp->sinfo_flags)) { case CHUNK_FLAGS_PR_SCTP_BUF: /* * Time to live is a priority stored in tv_sec when doing * the buffer drop thing. */ sp->ts.tv_sec = sp->timetolive; sp->ts.tv_usec = 0; break; case CHUNK_FLAGS_PR_SCTP_TTL: { struct timeval tv; (void)SCTP_GETTIME_TIMEVAL(&sp->ts); tv.tv_sec = sp->timetolive / 1000; tv.tv_usec = (sp->timetolive * 1000) % 1000000; /* * TODO sctp_constants.h needs alternative time * macros when _KERNEL is undefined. */ timevaladd(&sp->ts, &tv); } break; case CHUNK_FLAGS_PR_SCTP_RTX: /* * Time to live is a the number or retransmissions stored in * tv_sec. */ sp->ts.tv_sec = sp->timetolive; sp->ts.tv_usec = 0; break; default: SCTPDBG(SCTP_DEBUG_USRREQ1, "Unknown PR_SCTP policy %u.\n", PR_SCTP_POLICY(sp->sinfo_flags)); break; } } static int sctp_msg_append(struct sctp_tcb *stcb, struct sctp_nets *net, struct mbuf *m, struct sctp_sndrcvinfo *srcv, int hold_stcb_lock) { int error = 0; struct mbuf *at; struct sctp_stream_queue_pending *sp = NULL; struct sctp_stream_out *strm; /* * Given an mbuf chain, put it into the association send queue and * place it on the wheel */ if (srcv->sinfo_stream >= stcb->asoc.streamoutcnt) { /* Invalid stream number */ SCTP_LTRACE_ERR_RET_PKT(m, NULL, stcb, net, SCTP_FROM_SCTP_OUTPUT, EINVAL); error = EINVAL; goto out_now; } if ((stcb->asoc.stream_locked) && (stcb->asoc.stream_locked_on != srcv->sinfo_stream)) { SCTP_LTRACE_ERR_RET_PKT(m, NULL, stcb, net, SCTP_FROM_SCTP_OUTPUT, EINVAL); error = EINVAL; goto out_now; } strm = &stcb->asoc.strmout[srcv->sinfo_stream]; /* Now can we send this? */ if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_SENT) || (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_ACK_SENT) || (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED) || (stcb->asoc.state & SCTP_STATE_SHUTDOWN_PENDING)) { /* got data while shutting down */ SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, ECONNRESET); error = ECONNRESET; goto out_now; } sctp_alloc_a_strmoq(stcb, sp); if (sp == NULL) { SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, ENOMEM); error = ENOMEM; goto out_now; } sp->sinfo_flags = srcv->sinfo_flags; sp->timetolive = srcv->sinfo_timetolive; sp->ppid = srcv->sinfo_ppid; sp->context = srcv->sinfo_context; + sp->fsn = 0; + sp->msg_id = atomic_fetchadd_int(&stcb->asoc.assoc_msg_id, 1); if (sp->sinfo_flags & SCTP_ADDR_OVER) { sp->net = net; atomic_add_int(&sp->net->ref_count, 1); } else { sp->net = NULL; } (void)SCTP_GETTIME_TIMEVAL(&sp->ts); sp->stream = srcv->sinfo_stream; sp->msg_is_complete = 1; sp->sender_all_done = 1; sp->some_taken = 0; sp->data = m; sp->tail_mbuf = NULL; sctp_set_prsctp_policy(sp); /* * We could in theory (for sendall) sifa the length in, but we would * still have to hunt through the chain since we need to setup the * tail_mbuf */ sp->length = 0; for (at = m; at; at = SCTP_BUF_NEXT(at)) { if (SCTP_BUF_NEXT(at) == NULL) sp->tail_mbuf = at; sp->length += SCTP_BUF_LEN(at); } if (srcv->sinfo_keynumber_valid) { sp->auth_keyid = srcv->sinfo_keynumber; } else { sp->auth_keyid = stcb->asoc.authinfo.active_keyid; } if (sctp_auth_is_required_chunk(SCTP_DATA, stcb->asoc.peer_auth_chunks)) { sctp_auth_key_acquire(stcb, sp->auth_keyid); sp->holds_key_ref = 1; } if (hold_stcb_lock == 0) { SCTP_TCB_SEND_LOCK(stcb); } sctp_snd_sb_alloc(stcb, sp->length); atomic_add_int(&stcb->asoc.stream_queue_cnt, 1); TAILQ_INSERT_TAIL(&strm->outqueue, sp, next); stcb->asoc.ss_functions.sctp_ss_add_to_stream(stcb, &stcb->asoc, strm, sp, 1); m = NULL; if (hold_stcb_lock == 0) { SCTP_TCB_SEND_UNLOCK(stcb); } out_now: if (m) { sctp_m_freem(m); } return (error); } static struct mbuf * sctp_copy_mbufchain(struct mbuf *clonechain, struct mbuf *outchain, struct mbuf **endofchain, int can_take_mbuf, int sizeofcpy, uint8_t copy_by_ref) { struct mbuf *m; struct mbuf *appendchain; caddr_t cp; int len; if (endofchain == NULL) { /* error */ error_out: if (outchain) sctp_m_freem(outchain); return (NULL); } if (can_take_mbuf) { appendchain = clonechain; } else { if (!copy_by_ref && (sizeofcpy <= (int)((((SCTP_BASE_SYSCTL(sctp_mbuf_threshold_count) - 1) * MLEN) + MHLEN))) ) { /* Its not in a cluster */ if (*endofchain == NULL) { /* lets get a mbuf cluster */ if (outchain == NULL) { /* This is the general case */ new_mbuf: outchain = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_HEADER); if (outchain == NULL) { goto error_out; } SCTP_BUF_LEN(outchain) = 0; *endofchain = outchain; /* get the prepend space */ SCTP_BUF_RESV_UF(outchain, (SCTP_FIRST_MBUF_RESV + 4)); } else { /* * We really should not get a NULL * in endofchain */ /* find end */ m = outchain; while (m) { if (SCTP_BUF_NEXT(m) == NULL) { *endofchain = m; break; } m = SCTP_BUF_NEXT(m); } /* sanity */ if (*endofchain == NULL) { /* * huh, TSNH XXX maybe we * should panic */ sctp_m_freem(outchain); goto new_mbuf; } } /* get the new end of length */ len = (int)M_TRAILINGSPACE(*endofchain); } else { /* how much is left at the end? */ len = (int)M_TRAILINGSPACE(*endofchain); } /* Find the end of the data, for appending */ cp = (mtod((*endofchain), caddr_t)+SCTP_BUF_LEN((*endofchain))); /* Now lets copy it out */ if (len >= sizeofcpy) { /* It all fits, copy it in */ m_copydata(clonechain, 0, sizeofcpy, cp); SCTP_BUF_LEN((*endofchain)) += sizeofcpy; } else { /* fill up the end of the chain */ if (len > 0) { m_copydata(clonechain, 0, len, cp); SCTP_BUF_LEN((*endofchain)) += len; /* now we need another one */ sizeofcpy -= len; } m = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_HEADER); if (m == NULL) { /* We failed */ goto error_out; } SCTP_BUF_NEXT((*endofchain)) = m; *endofchain = m; cp = mtod((*endofchain), caddr_t); m_copydata(clonechain, len, sizeofcpy, cp); SCTP_BUF_LEN((*endofchain)) += sizeofcpy; } return (outchain); } else { /* copy the old fashion way */ appendchain = SCTP_M_COPYM(clonechain, 0, M_COPYALL, M_NOWAIT); #ifdef SCTP_MBUF_LOGGING if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) { sctp_log_mbc(appendchain, SCTP_MBUF_ICOPY); } #endif } } if (appendchain == NULL) { /* error */ if (outchain) sctp_m_freem(outchain); return (NULL); } if (outchain) { /* tack on to the end */ if (*endofchain != NULL) { SCTP_BUF_NEXT(((*endofchain))) = appendchain; } else { m = outchain; while (m) { if (SCTP_BUF_NEXT(m) == NULL) { SCTP_BUF_NEXT(m) = appendchain; break; } m = SCTP_BUF_NEXT(m); } } /* * save off the end and update the end-chain postion */ m = appendchain; while (m) { if (SCTP_BUF_NEXT(m) == NULL) { *endofchain = m; break; } m = SCTP_BUF_NEXT(m); } return (outchain); } else { /* save off the end and update the end-chain postion */ m = appendchain; while (m) { if (SCTP_BUF_NEXT(m) == NULL) { *endofchain = m; break; } m = SCTP_BUF_NEXT(m); } return (appendchain); } } static int sctp_med_chunk_output(struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sctp_association *asoc, int *num_out, int *reason_code, int control_only, int from_where, struct timeval *now, int *now_filled, int frag_point, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ); static void sctp_sendall_iterator(struct sctp_inpcb *inp, struct sctp_tcb *stcb, void *ptr, uint32_t val SCTP_UNUSED) { struct sctp_copy_all *ca; struct mbuf *m; int ret = 0; int added_control = 0; int un_sent, do_chunk_output = 1; struct sctp_association *asoc; struct sctp_nets *net; ca = (struct sctp_copy_all *)ptr; if (ca->m == NULL) { return; } if (ca->inp != inp) { /* TSNH */ return; } if (ca->sndlen > 0) { m = SCTP_M_COPYM(ca->m, 0, M_COPYALL, M_NOWAIT); if (m == NULL) { /* can't copy so we are done */ ca->cnt_failed++; return; } #ifdef SCTP_MBUF_LOGGING if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) { sctp_log_mbc(m, SCTP_MBUF_ICOPY); } #endif } else { m = NULL; } SCTP_TCB_LOCK_ASSERT(stcb); if (stcb->asoc.alternate) { net = stcb->asoc.alternate; } else { net = stcb->asoc.primary_destination; } if (ca->sndrcv.sinfo_flags & SCTP_ABORT) { /* Abort this assoc with m as the user defined reason */ if (m != NULL) { SCTP_BUF_PREPEND(m, sizeof(struct sctp_paramhdr), M_NOWAIT); } else { m = sctp_get_mbuf_for_msg(sizeof(struct sctp_paramhdr), 0, M_NOWAIT, 1, MT_DATA); SCTP_BUF_LEN(m) = sizeof(struct sctp_paramhdr); } if (m != NULL) { struct sctp_paramhdr *ph; ph = mtod(m, struct sctp_paramhdr *); ph->param_type = htons(SCTP_CAUSE_USER_INITIATED_ABT); ph->param_length = htons((uint16_t) (sizeof(struct sctp_paramhdr) + ca->sndlen)); } /* * We add one here to keep the assoc from dis-appearing on * us. */ atomic_add_int(&stcb->asoc.refcnt, 1); sctp_abort_an_association(inp, stcb, m, SCTP_SO_NOT_LOCKED); /* * sctp_abort_an_association calls sctp_free_asoc() free * association will NOT free it since we incremented the * refcnt .. we do this to prevent it being freed and things * getting tricky since we could end up (from free_asoc) * calling inpcb_free which would get a recursive lock call * to the iterator lock.. But as a consequence of that the * stcb will return to us un-locked.. since free_asoc * returns with either no TCB or the TCB unlocked, we must * relock.. to unlock in the iterator timer :-0 */ SCTP_TCB_LOCK(stcb); atomic_add_int(&stcb->asoc.refcnt, -1); goto no_chunk_output; } else { if (m) { ret = sctp_msg_append(stcb, net, m, &ca->sndrcv, 1); } asoc = &stcb->asoc; if (ca->sndrcv.sinfo_flags & SCTP_EOF) { /* shutdown this assoc */ int cnt; cnt = sctp_is_there_unsent_data(stcb, SCTP_SO_NOT_LOCKED); if (TAILQ_EMPTY(&asoc->send_queue) && TAILQ_EMPTY(&asoc->sent_queue) && (cnt == 0)) { if (asoc->locked_on_sending) { goto abort_anyway; } /* * there is nothing queued to send, so I'm * done... */ if ((SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) && (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_RECEIVED) && (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) { /* * only send SHUTDOWN the first time * through */ if (SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) { SCTP_STAT_DECR_GAUGE32(sctps_currestab); } SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT); SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING); sctp_stop_timers_for_shutdown(stcb); sctp_send_shutdown(stcb, net); sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, stcb->sctp_ep, stcb, net); sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb, asoc->primary_destination); added_control = 1; do_chunk_output = 0; } } else { /* * we still got (or just got) data to send, * so set SHUTDOWN_PENDING */ /* * XXX sockets draft says that SCTP_EOF * should be sent with no data. currently, * we will allow user data to be sent first * and move to SHUTDOWN-PENDING */ if ((SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) && (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_RECEIVED) && (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) { if (asoc->locked_on_sending) { /* * Locked to send out the * data */ struct sctp_stream_queue_pending *sp; sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead); if (sp) { if ((sp->length == 0) && (sp->msg_is_complete == 0)) asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT; } } asoc->state |= SCTP_STATE_SHUTDOWN_PENDING; if (TAILQ_EMPTY(&asoc->send_queue) && TAILQ_EMPTY(&asoc->sent_queue) && (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) { struct mbuf *op_err; char msg[SCTP_DIAG_INFO_LEN]; abort_anyway: snprintf(msg, sizeof(msg), "%s:%d at %s", __FILE__, __LINE__, __func__); op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), msg); atomic_add_int(&stcb->asoc.refcnt, 1); sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_NOT_LOCKED); atomic_add_int(&stcb->asoc.refcnt, -1); goto no_chunk_output; } sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb, asoc->primary_destination); } } } } un_sent = ((stcb->asoc.total_output_queue_size - stcb->asoc.total_flight) + (stcb->asoc.stream_queue_cnt * sizeof(struct sctp_data_chunk))); if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_NODELAY)) && (stcb->asoc.total_flight > 0) && (un_sent < (int)(stcb->asoc.smallest_mtu - SCTP_MIN_OVERHEAD))) { do_chunk_output = 0; } if (do_chunk_output) sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_USR_SEND, SCTP_SO_NOT_LOCKED); else if (added_control) { int num_out, reason, now_filled = 0; struct timeval now; int frag_point; frag_point = sctp_get_frag_point(stcb, &stcb->asoc); (void)sctp_med_chunk_output(inp, stcb, &stcb->asoc, &num_out, &reason, 1, 1, &now, &now_filled, frag_point, SCTP_SO_NOT_LOCKED); } no_chunk_output: if (ret) { ca->cnt_failed++; } else { ca->cnt_sent++; } } static void sctp_sendall_completes(void *ptr, uint32_t val SCTP_UNUSED) { struct sctp_copy_all *ca; ca = (struct sctp_copy_all *)ptr; /* * Do a notify here? Kacheong suggests that the notify be done at * the send time.. so you would push up a notification if any send * failed. Don't know if this is feasable since the only failures we * have is "memory" related and if you cannot get an mbuf to send * the data you surely can't get an mbuf to send up to notify the * user you can't send the data :-> */ /* now free everything */ sctp_m_freem(ca->m); SCTP_FREE(ca, SCTP_M_COPYAL); } static struct mbuf * sctp_copy_out_all(struct uio *uio, int len) { struct mbuf *ret, *at; int left, willcpy, cancpy, error; ret = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_WAITOK, 1, MT_DATA); if (ret == NULL) { /* TSNH */ return (NULL); } left = len; SCTP_BUF_LEN(ret) = 0; /* save space for the data chunk header */ cancpy = (int)M_TRAILINGSPACE(ret); willcpy = min(cancpy, left); at = ret; while (left > 0) { /* Align data to the end */ error = uiomove(mtod(at, caddr_t), willcpy, uio); if (error) { err_out_now: sctp_m_freem(at); return (NULL); } SCTP_BUF_LEN(at) = willcpy; SCTP_BUF_NEXT_PKT(at) = SCTP_BUF_NEXT(at) = 0; left -= willcpy; if (left > 0) { SCTP_BUF_NEXT(at) = sctp_get_mbuf_for_msg(left, 0, M_WAITOK, 1, MT_DATA); if (SCTP_BUF_NEXT(at) == NULL) { goto err_out_now; } at = SCTP_BUF_NEXT(at); SCTP_BUF_LEN(at) = 0; cancpy = (int)M_TRAILINGSPACE(at); willcpy = min(cancpy, left); } } return (ret); } static int sctp_sendall(struct sctp_inpcb *inp, struct uio *uio, struct mbuf *m, struct sctp_sndrcvinfo *srcv) { int ret; struct sctp_copy_all *ca; SCTP_MALLOC(ca, struct sctp_copy_all *, sizeof(struct sctp_copy_all), SCTP_M_COPYAL); if (ca == NULL) { sctp_m_freem(m); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_OUTPUT, ENOMEM); return (ENOMEM); } memset(ca, 0, sizeof(struct sctp_copy_all)); ca->inp = inp; if (srcv) { memcpy(&ca->sndrcv, srcv, sizeof(struct sctp_nonpad_sndrcvinfo)); } /* * take off the sendall flag, it would be bad if we failed to do * this :-0 */ ca->sndrcv.sinfo_flags &= ~SCTP_SENDALL; /* get length and mbuf chain */ if (uio) { ca->sndlen = (int)uio->uio_resid; ca->m = sctp_copy_out_all(uio, ca->sndlen); if (ca->m == NULL) { SCTP_FREE(ca, SCTP_M_COPYAL); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_OUTPUT, ENOMEM); return (ENOMEM); } } else { /* Gather the length of the send */ struct mbuf *mat; ca->sndlen = 0; for (mat = m; mat; mat = SCTP_BUF_NEXT(mat)) { ca->sndlen += SCTP_BUF_LEN(mat); } } ret = sctp_initiate_iterator(NULL, sctp_sendall_iterator, NULL, SCTP_PCB_ANY_FLAGS, SCTP_PCB_ANY_FEATURES, SCTP_ASOC_ANY_STATE, (void *)ca, 0, sctp_sendall_completes, inp, 1); if (ret) { SCTP_PRINTF("Failed to initiate iterator for sendall\n"); SCTP_FREE(ca, SCTP_M_COPYAL); SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_OUTPUT, EFAULT); return (EFAULT); } return (0); } void sctp_toss_old_cookies(struct sctp_tcb *stcb, struct sctp_association *asoc) { struct sctp_tmit_chunk *chk, *nchk; TAILQ_FOREACH_SAFE(chk, &asoc->control_send_queue, sctp_next, nchk) { if (chk->rec.chunk_id.id == SCTP_COOKIE_ECHO) { TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next); if (chk->data) { sctp_m_freem(chk->data); chk->data = NULL; } asoc->ctrl_queue_cnt--; sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); } } } void sctp_toss_old_asconf(struct sctp_tcb *stcb) { struct sctp_association *asoc; struct sctp_tmit_chunk *chk, *nchk; struct sctp_asconf_chunk *acp; asoc = &stcb->asoc; TAILQ_FOREACH_SAFE(chk, &asoc->asconf_send_queue, sctp_next, nchk) { /* find SCTP_ASCONF chunk in queue */ if (chk->rec.chunk_id.id == SCTP_ASCONF) { if (chk->data) { acp = mtod(chk->data, struct sctp_asconf_chunk *); if (SCTP_TSN_GT(ntohl(acp->serial_number), asoc->asconf_seq_out_acked)) { /* Not Acked yet */ break; } } TAILQ_REMOVE(&asoc->asconf_send_queue, chk, sctp_next); if (chk->data) { sctp_m_freem(chk->data); chk->data = NULL; } asoc->ctrl_queue_cnt--; sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); } } } static void sctp_clean_up_datalist(struct sctp_tcb *stcb, struct sctp_association *asoc, struct sctp_tmit_chunk **data_list, int bundle_at, struct sctp_nets *net) { int i; struct sctp_tmit_chunk *tp1; for (i = 0; i < bundle_at; i++) { /* off of the send queue */ TAILQ_REMOVE(&asoc->send_queue, data_list[i], sctp_next); asoc->send_queue_cnt--; if (i > 0) { /* * Any chunk NOT 0 you zap the time chunk 0 gets * zapped or set based on if a RTO measurment is * needed. */ data_list[i]->do_rtt = 0; } /* record time */ data_list[i]->sent_rcv_time = net->last_sent_time; data_list[i]->rec.data.cwnd_at_send = net->cwnd; data_list[i]->rec.data.fast_retran_tsn = data_list[i]->rec.data.TSN_seq; if (data_list[i]->whoTo == NULL) { data_list[i]->whoTo = net; atomic_add_int(&net->ref_count, 1); } /* on to the sent queue */ tp1 = TAILQ_LAST(&asoc->sent_queue, sctpchunk_listhead); if ((tp1) && SCTP_TSN_GT(tp1->rec.data.TSN_seq, data_list[i]->rec.data.TSN_seq)) { struct sctp_tmit_chunk *tpp; /* need to move back */ back_up_more: tpp = TAILQ_PREV(tp1, sctpchunk_listhead, sctp_next); if (tpp == NULL) { TAILQ_INSERT_BEFORE(tp1, data_list[i], sctp_next); goto all_done; } tp1 = tpp; if (SCTP_TSN_GT(tp1->rec.data.TSN_seq, data_list[i]->rec.data.TSN_seq)) { goto back_up_more; } TAILQ_INSERT_AFTER(&asoc->sent_queue, tp1, data_list[i], sctp_next); } else { TAILQ_INSERT_TAIL(&asoc->sent_queue, data_list[i], sctp_next); } all_done: /* This does not lower until the cum-ack passes it */ asoc->sent_queue_cnt++; if ((asoc->peers_rwnd <= 0) && (asoc->total_flight == 0) && (bundle_at == 1)) { /* Mark the chunk as being a window probe */ SCTP_STAT_INCR(sctps_windowprobed); } #ifdef SCTP_AUDITING_ENABLED sctp_audit_log(0xC2, 3); #endif data_list[i]->sent = SCTP_DATAGRAM_SENT; data_list[i]->snd_count = 1; data_list[i]->rec.data.chunk_was_revoked = 0; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FLIGHT_LOGGING_ENABLE) { sctp_misc_ints(SCTP_FLIGHT_LOG_UP, data_list[i]->whoTo->flight_size, data_list[i]->book_size, (uint32_t) (uintptr_t) data_list[i]->whoTo, data_list[i]->rec.data.TSN_seq); } sctp_flight_size_increase(data_list[i]); sctp_total_flight_increase(stcb, data_list[i]); if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOG_RWND_ENABLE) { sctp_log_rwnd(SCTP_DECREASE_PEER_RWND, asoc->peers_rwnd, data_list[i]->send_size, SCTP_BASE_SYSCTL(sctp_peer_chunk_oh)); } asoc->peers_rwnd = sctp_sbspace_sub(asoc->peers_rwnd, (uint32_t) (data_list[i]->send_size + SCTP_BASE_SYSCTL(sctp_peer_chunk_oh))); if (asoc->peers_rwnd < stcb->sctp_ep->sctp_ep.sctp_sws_sender) { /* SWS sender side engages */ asoc->peers_rwnd = 0; } } if (asoc->cc_functions.sctp_cwnd_update_packet_transmitted) { (*asoc->cc_functions.sctp_cwnd_update_packet_transmitted) (stcb, net); } } static void sctp_clean_up_ctl(struct sctp_tcb *stcb, struct sctp_association *asoc, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ) { struct sctp_tmit_chunk *chk, *nchk; TAILQ_FOREACH_SAFE(chk, &asoc->control_send_queue, sctp_next, nchk) { if ((chk->rec.chunk_id.id == SCTP_SELECTIVE_ACK) || (chk->rec.chunk_id.id == SCTP_NR_SELECTIVE_ACK) || /* EY */ (chk->rec.chunk_id.id == SCTP_HEARTBEAT_REQUEST) || (chk->rec.chunk_id.id == SCTP_HEARTBEAT_ACK) || (chk->rec.chunk_id.id == SCTP_FORWARD_CUM_TSN) || (chk->rec.chunk_id.id == SCTP_SHUTDOWN) || (chk->rec.chunk_id.id == SCTP_SHUTDOWN_ACK) || (chk->rec.chunk_id.id == SCTP_OPERATION_ERROR) || (chk->rec.chunk_id.id == SCTP_PACKET_DROPPED) || (chk->rec.chunk_id.id == SCTP_COOKIE_ACK) || (chk->rec.chunk_id.id == SCTP_ECN_CWR) || (chk->rec.chunk_id.id == SCTP_ASCONF_ACK)) { /* Stray chunks must be cleaned up */ clean_up_anyway: TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next); if (chk->data) { sctp_m_freem(chk->data); chk->data = NULL; } asoc->ctrl_queue_cnt--; if (chk->rec.chunk_id.id == SCTP_FORWARD_CUM_TSN) asoc->fwd_tsn_cnt--; sctp_free_a_chunk(stcb, chk, so_locked); } else if (chk->rec.chunk_id.id == SCTP_STREAM_RESET) { /* special handling, we must look into the param */ if (chk != asoc->str_reset) { goto clean_up_anyway; } } } } static int sctp_can_we_split_this(struct sctp_tcb *stcb, uint32_t length, uint32_t goal_mtu, uint32_t frag_point, int eeor_on) { /* * Make a decision on if I should split a msg into multiple parts. * This is only asked of incomplete messages. */ if (eeor_on) { /* * If we are doing EEOR we need to always send it if its the * entire thing, since it might be all the guy is putting in * the hopper. */ if (goal_mtu >= length) { /*- * If we have data outstanding, * we get another chance when the sack * arrives to transmit - wait for more data */ if (stcb->asoc.total_flight == 0) { /* * If nothing is in flight, we zero the * packet counter. */ return (length); } return (0); } else { /* You can fill the rest */ return (goal_mtu); } } /*- * For those strange folk that make the send buffer * smaller than our fragmentation point, we can't * get a full msg in so we have to allow splitting. */ if (SCTP_SB_LIMIT_SND(stcb->sctp_socket) < frag_point) { return (length); } if ((length <= goal_mtu) || ((length - goal_mtu) < SCTP_BASE_SYSCTL(sctp_min_residual))) { /* Sub-optimial residual don't split in non-eeor mode. */ return (0); } /* * If we reach here length is larger than the goal_mtu. Do we wish * to split it for the sake of packet putting together? */ if (goal_mtu >= min(SCTP_BASE_SYSCTL(sctp_min_split_point), frag_point)) { /* Its ok to split it */ return (min(goal_mtu, frag_point)); } /* Nope, can't split */ return (0); } static uint32_t sctp_move_to_outqueue(struct sctp_tcb *stcb, struct sctp_stream_out *strq, uint32_t goal_mtu, uint32_t frag_point, int *locked, int *giveup, int eeor_mode, int *bail, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ) { /* Move from the stream to the send_queue keeping track of the total */ struct sctp_association *asoc; struct sctp_stream_queue_pending *sp; struct sctp_tmit_chunk *chk; - struct sctp_data_chunk *dchkh; - uint32_t to_move, length; + struct sctp_data_chunk *dchkh = NULL; + struct sctp_idata_chunk *ndchkh = NULL; + uint32_t to_move, length, leading; uint8_t rcv_flags = 0; uint8_t some_taken; uint8_t send_lock_up = 0; SCTP_TCB_LOCK_ASSERT(stcb); asoc = &stcb->asoc; one_more_time: /* sa_ignore FREED_MEMORY */ + *locked = 0; sp = TAILQ_FIRST(&strq->outqueue); if (sp == NULL) { *locked = 0; if (send_lock_up == 0) { SCTP_TCB_SEND_LOCK(stcb); send_lock_up = 1; } sp = TAILQ_FIRST(&strq->outqueue); if (sp) { goto one_more_time; } - if (strq->last_msg_incomplete) { + if ((sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_EXPLICIT_EOR) == 0) && + (stcb->asoc.idata_supported == 0) && + (strq->last_msg_incomplete)) { SCTP_PRINTF("Huh? Stream:%d lm_in_c=%d but queue is NULL\n", strq->stream_no, strq->last_msg_incomplete); strq->last_msg_incomplete = 0; } to_move = 0; if (send_lock_up) { SCTP_TCB_SEND_UNLOCK(stcb); send_lock_up = 0; } goto out_of; } if ((sp->msg_is_complete) && (sp->length == 0)) { if (sp->sender_all_done) { /* * We are doing differed cleanup. Last time through * when we took all the data the sender_all_done was * not set. */ if ((sp->put_last_out == 0) && (sp->discard_rest == 0)) { SCTP_PRINTF("Gak, put out entire msg with NO end!-1\n"); SCTP_PRINTF("sender_done:%d len:%d msg_comp:%d put_last_out:%d send_lock:%d\n", sp->sender_all_done, sp->length, sp->msg_is_complete, sp->put_last_out, send_lock_up); } if ((TAILQ_NEXT(sp, next) == NULL) && (send_lock_up == 0)) { SCTP_TCB_SEND_LOCK(stcb); send_lock_up = 1; } atomic_subtract_int(&asoc->stream_queue_cnt, 1); TAILQ_REMOVE(&strq->outqueue, sp, next); if ((strq->state == SCTP_STREAM_RESET_PENDING) && (strq->chunks_on_queues == 0) && TAILQ_EMPTY(&strq->outqueue)) { stcb->asoc.trigger_reset = 1; } stcb->asoc.ss_functions.sctp_ss_remove_from_stream(stcb, asoc, strq, sp, send_lock_up); if (sp->net) { sctp_free_remote_addr(sp->net); sp->net = NULL; } if (sp->data) { sctp_m_freem(sp->data); sp->data = NULL; } sctp_free_a_strmoq(stcb, sp, so_locked); /* we can't be locked to it */ *locked = 0; stcb->asoc.locked_on_sending = NULL; if (send_lock_up) { SCTP_TCB_SEND_UNLOCK(stcb); send_lock_up = 0; } /* back to get the next msg */ goto one_more_time; } else { /* * sender just finished this but still holds a * reference */ - *locked = 1; + if (stcb->asoc.idata_supported == 0) + *locked = 1; *giveup = 1; to_move = 0; goto out_of; } } else { /* is there some to get */ if (sp->length == 0) { /* no */ - *locked = 1; + if (stcb->asoc.idata_supported == 0) + *locked = 1; *giveup = 1; to_move = 0; goto out_of; } else if (sp->discard_rest) { if (send_lock_up == 0) { SCTP_TCB_SEND_LOCK(stcb); send_lock_up = 1; } /* Whack down the size */ atomic_subtract_int(&stcb->asoc.total_output_queue_size, sp->length); if ((stcb->sctp_socket != NULL) && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { atomic_subtract_int(&stcb->sctp_socket->so_snd.sb_cc, sp->length); } if (sp->data) { sctp_m_freem(sp->data); sp->data = NULL; sp->tail_mbuf = NULL; } sp->length = 0; sp->some_taken = 1; - *locked = 1; + if (stcb->asoc.idata_supported == 0) + *locked = 1; *giveup = 1; to_move = 0; goto out_of; } } some_taken = sp->some_taken; re_look: length = sp->length; if (sp->msg_is_complete) { /* The message is complete */ to_move = min(length, frag_point); if (to_move == length) { /* All of it fits in the MTU */ if (sp->some_taken) { rcv_flags |= SCTP_DATA_LAST_FRAG; sp->put_last_out = 1; } else { rcv_flags |= SCTP_DATA_NOT_FRAG; sp->put_last_out = 1; } } else { /* Not all of it fits, we fragment */ if (sp->some_taken == 0) { rcv_flags |= SCTP_DATA_FIRST_FRAG; } sp->some_taken = 1; } } else { to_move = sctp_can_we_split_this(stcb, length, goal_mtu, frag_point, eeor_mode); if (to_move) { /*- * We use a snapshot of length in case it * is expanding during the compare. */ uint32_t llen; llen = length; if (to_move >= llen) { to_move = llen; if (send_lock_up == 0) { /*- * We are taking all of an incomplete msg * thus we need a send lock. */ SCTP_TCB_SEND_LOCK(stcb); send_lock_up = 1; if (sp->msg_is_complete) { /* * the sender finished the * msg */ goto re_look; } } } if (sp->some_taken == 0) { rcv_flags |= SCTP_DATA_FIRST_FRAG; sp->some_taken = 1; } } else { /* Nothing to take. */ - if (sp->some_taken) { + if ((sp->some_taken) && + (stcb->asoc.idata_supported == 0)) { *locked = 1; } *giveup = 1; to_move = 0; goto out_of; } } /* If we reach here, we can copy out a chunk */ sctp_alloc_a_chunk(stcb, chk); if (chk == NULL) { /* No chunk memory */ *giveup = 1; to_move = 0; goto out_of; } /* * Setup for unordered if needed by looking at the user sent info * flags. */ if (sp->sinfo_flags & SCTP_UNORDERED) { rcv_flags |= SCTP_DATA_UNORDERED; } if ((SCTP_BASE_SYSCTL(sctp_enable_sack_immediately) && ((sp->sinfo_flags & SCTP_EOF) == SCTP_EOF)) || ((sp->sinfo_flags & SCTP_SACK_IMMEDIATELY) == SCTP_SACK_IMMEDIATELY)) { rcv_flags |= SCTP_DATA_SACK_IMMEDIATELY; } /* clear out the chunk before setting up */ memset(chk, 0, sizeof(*chk)); chk->rec.data.rcv_flags = rcv_flags; if (to_move >= length) { /* we think we can steal the whole thing */ if ((sp->sender_all_done == 0) && (send_lock_up == 0)) { SCTP_TCB_SEND_LOCK(stcb); send_lock_up = 1; } if (to_move < sp->length) { /* bail, it changed */ goto dont_do_it; } chk->data = sp->data; chk->last_mbuf = sp->tail_mbuf; /* register the stealing */ sp->data = sp->tail_mbuf = NULL; } else { struct mbuf *m; dont_do_it: chk->data = SCTP_M_COPYM(sp->data, 0, to_move, M_NOWAIT); chk->last_mbuf = NULL; if (chk->data == NULL) { sp->some_taken = some_taken; sctp_free_a_chunk(stcb, chk, so_locked); *bail = 1; to_move = 0; goto out_of; } #ifdef SCTP_MBUF_LOGGING if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) { sctp_log_mbc(chk->data, SCTP_MBUF_ICOPY); } #endif /* Pull off the data */ m_adj(sp->data, to_move); /* Now lets work our way down and compact it */ m = sp->data; while (m && (SCTP_BUF_LEN(m) == 0)) { sp->data = SCTP_BUF_NEXT(m); SCTP_BUF_NEXT(m) = NULL; if (sp->tail_mbuf == m) { /*- * Freeing tail? TSNH since * we supposedly were taking less * than the sp->length. */ #ifdef INVARIANTS panic("Huh, freing tail? - TSNH"); #else SCTP_PRINTF("Huh, freeing tail? - TSNH\n"); sp->tail_mbuf = sp->data = NULL; sp->length = 0; #endif } sctp_m_free(m); m = sp->data; } } if (SCTP_BUF_IS_EXTENDED(chk->data)) { chk->copy_by_ref = 1; } else { chk->copy_by_ref = 0; } /* * get last_mbuf and counts of mb useage This is ugly but hopefully * its only one mbuf. */ if (chk->last_mbuf == NULL) { chk->last_mbuf = chk->data; while (SCTP_BUF_NEXT(chk->last_mbuf) != NULL) { chk->last_mbuf = SCTP_BUF_NEXT(chk->last_mbuf); } } if (to_move > length) { /*- This should not happen either * since we always lower to_move to the size * of sp->length if its larger. */ #ifdef INVARIANTS panic("Huh, how can to_move be larger?"); #else SCTP_PRINTF("Huh, how can to_move be larger?\n"); sp->length = 0; #endif } else { atomic_subtract_int(&sp->length, to_move); } - if (M_LEADINGSPACE(chk->data) < (int)sizeof(struct sctp_data_chunk)) { + if (stcb->asoc.idata_supported == 0) { + leading = (int)sizeof(struct sctp_data_chunk); + } else { + leading = (int)sizeof(struct sctp_idata_chunk); + } + if (M_LEADINGSPACE(chk->data) < leading) { /* Not enough room for a chunk header, get some */ struct mbuf *m; m = sctp_get_mbuf_for_msg(1, 0, M_NOWAIT, 0, MT_DATA); if (m == NULL) { /* * we're in trouble here. _PREPEND below will free * all the data if there is no leading space, so we * must put the data back and restore. */ if (send_lock_up == 0) { SCTP_TCB_SEND_LOCK(stcb); send_lock_up = 1; } if (sp->data == NULL) { /* unsteal the data */ sp->data = chk->data; sp->tail_mbuf = chk->last_mbuf; } else { struct mbuf *m_tmp; /* reassemble the data */ m_tmp = sp->data; sp->data = chk->data; SCTP_BUF_NEXT(chk->last_mbuf) = m_tmp; } sp->some_taken = some_taken; atomic_add_int(&sp->length, to_move); chk->data = NULL; *bail = 1; sctp_free_a_chunk(stcb, chk, so_locked); to_move = 0; goto out_of; } else { SCTP_BUF_LEN(m) = 0; SCTP_BUF_NEXT(m) = chk->data; chk->data = m; M_ALIGN(chk->data, 4); } } - SCTP_BUF_PREPEND(chk->data, sizeof(struct sctp_data_chunk), M_NOWAIT); + if (stcb->asoc.idata_supported == 0) { + SCTP_BUF_PREPEND(chk->data, sizeof(struct sctp_data_chunk), M_NOWAIT); + } else { + SCTP_BUF_PREPEND(chk->data, sizeof(struct sctp_idata_chunk), M_NOWAIT); + } if (chk->data == NULL) { /* HELP, TSNH since we assured it would not above? */ #ifdef INVARIANTS panic("prepend failes HELP?"); #else SCTP_PRINTF("prepend fails HELP?\n"); sctp_free_a_chunk(stcb, chk, so_locked); #endif *bail = 1; to_move = 0; goto out_of; } - sctp_snd_sb_alloc(stcb, sizeof(struct sctp_data_chunk)); - chk->book_size = chk->send_size = (uint16_t) (to_move + sizeof(struct sctp_data_chunk)); + if (stcb->asoc.idata_supported == 0) { + sctp_snd_sb_alloc(stcb, sizeof(struct sctp_data_chunk)); + chk->book_size = chk->send_size = (uint16_t) (to_move + sizeof(struct sctp_data_chunk)); + } else { + sctp_snd_sb_alloc(stcb, sizeof(struct sctp_idata_chunk)); + chk->book_size = chk->send_size = (uint16_t) (to_move + sizeof(struct sctp_idata_chunk)); + } chk->book_size_scale = 0; chk->sent = SCTP_DATAGRAM_UNSENT; chk->flags = 0; chk->asoc = &stcb->asoc; chk->pad_inplace = 0; chk->no_fr_allowed = 0; chk->rec.data.stream_seq = strq->next_sequence_send; if ((rcv_flags & SCTP_DATA_LAST_FRAG) && !(rcv_flags & SCTP_DATA_UNORDERED)) { strq->next_sequence_send++; } chk->rec.data.stream_number = sp->stream; chk->rec.data.payloadtype = sp->ppid; chk->rec.data.context = sp->context; chk->rec.data.doing_fast_retransmit = 0; chk->rec.data.timetodrop = sp->ts; chk->flags = sp->act_flags; if (sp->net) { chk->whoTo = sp->net; atomic_add_int(&chk->whoTo->ref_count, 1); } else chk->whoTo = NULL; if (sp->holds_key_ref) { chk->auth_keyid = sp->auth_keyid; sctp_auth_key_acquire(stcb, chk->auth_keyid); chk->holds_key_ref = 1; } chk->rec.data.TSN_seq = atomic_fetchadd_int(&asoc->sending_seq, 1); if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOG_AT_SEND_2_OUTQ) { sctp_misc_ints(SCTP_STRMOUT_LOG_SEND, (uint32_t) (uintptr_t) stcb, sp->length, (uint32_t) ((chk->rec.data.stream_number << 16) | chk->rec.data.stream_seq), chk->rec.data.TSN_seq); } - dchkh = mtod(chk->data, struct sctp_data_chunk *); + if (stcb->asoc.idata_supported == 0) { + dchkh = mtod(chk->data, struct sctp_data_chunk *); + } else { + ndchkh = mtod(chk->data, struct sctp_idata_chunk *); + } /* * Put the rest of the things in place now. Size was done earlier in * previous loop prior to padding. */ #ifdef SCTP_ASOCLOG_OF_TSNS SCTP_TCB_LOCK_ASSERT(stcb); if (asoc->tsn_out_at >= SCTP_TSN_LOG_SIZE) { asoc->tsn_out_at = 0; asoc->tsn_out_wrapped = 1; } asoc->out_tsnlog[asoc->tsn_out_at].tsn = chk->rec.data.TSN_seq; asoc->out_tsnlog[asoc->tsn_out_at].strm = chk->rec.data.stream_number; asoc->out_tsnlog[asoc->tsn_out_at].seq = chk->rec.data.stream_seq; asoc->out_tsnlog[asoc->tsn_out_at].sz = chk->send_size; asoc->out_tsnlog[asoc->tsn_out_at].flgs = chk->rec.data.rcv_flags; asoc->out_tsnlog[asoc->tsn_out_at].stcb = (void *)stcb; asoc->out_tsnlog[asoc->tsn_out_at].in_pos = asoc->tsn_out_at; asoc->out_tsnlog[asoc->tsn_out_at].in_out = 2; asoc->tsn_out_at++; #endif - - dchkh->ch.chunk_type = SCTP_DATA; - dchkh->ch.chunk_flags = chk->rec.data.rcv_flags; - dchkh->dp.tsn = htonl(chk->rec.data.TSN_seq); - dchkh->dp.stream_id = htons(strq->stream_no); - dchkh->dp.stream_sequence = htons(chk->rec.data.stream_seq); - dchkh->dp.protocol_id = chk->rec.data.payloadtype; - dchkh->ch.chunk_length = htons(chk->send_size); + if (stcb->asoc.idata_supported == 0) { + dchkh->ch.chunk_type = SCTP_DATA; + dchkh->ch.chunk_flags = chk->rec.data.rcv_flags; + dchkh->dp.tsn = htonl(chk->rec.data.TSN_seq); + dchkh->dp.stream_id = htons((strq->stream_no & 0x0000ffff)); + dchkh->dp.stream_sequence = htons(chk->rec.data.stream_seq); + dchkh->dp.protocol_id = chk->rec.data.payloadtype; + dchkh->ch.chunk_length = htons(chk->send_size); + } else { + ndchkh->ch.chunk_type = SCTP_IDATA; + ndchkh->ch.chunk_flags = chk->rec.data.rcv_flags; + ndchkh->dp.tsn = htonl(chk->rec.data.TSN_seq); + ndchkh->dp.stream_id = htons(strq->stream_no); + /* WHAT DO WE DO HERE??? */ + ndchkh->dp.reserved = htons(0); + ndchkh->dp.msg_id = htonl(sp->msg_id); + if (sp->fsn == 0) + ndchkh->dp.protocol_id = chk->rec.data.payloadtype; + else + ndchkh->dp.fsn = htonl(sp->fsn); + sp->fsn++; + ndchkh->ch.chunk_length = htons(chk->send_size); + } /* Now advance the chk->send_size by the actual pad needed. */ if (chk->send_size < SCTP_SIZE32(chk->book_size)) { /* need a pad */ struct mbuf *lm; int pads; pads = SCTP_SIZE32(chk->book_size) - chk->send_size; lm = sctp_pad_lastmbuf(chk->data, pads, chk->last_mbuf); if (lm != NULL) { chk->last_mbuf = lm; chk->pad_inplace = 1; } chk->send_size += pads; } if (PR_SCTP_ENABLED(chk->flags)) { asoc->pr_sctp_cnt++; } if (sp->msg_is_complete && (sp->length == 0) && (sp->sender_all_done)) { /* All done pull and kill the message */ atomic_subtract_int(&asoc->stream_queue_cnt, 1); if (sp->put_last_out == 0) { SCTP_PRINTF("Gak, put out entire msg with NO end!-2\n"); SCTP_PRINTF("sender_done:%d len:%d msg_comp:%d put_last_out:%d send_lock:%d\n", sp->sender_all_done, sp->length, sp->msg_is_complete, sp->put_last_out, send_lock_up); } if ((send_lock_up == 0) && (TAILQ_NEXT(sp, next) == NULL)) { SCTP_TCB_SEND_LOCK(stcb); send_lock_up = 1; } TAILQ_REMOVE(&strq->outqueue, sp, next); if ((strq->state == SCTP_STREAM_RESET_PENDING) && (strq->chunks_on_queues == 0) && TAILQ_EMPTY(&strq->outqueue)) { stcb->asoc.trigger_reset = 1; } stcb->asoc.ss_functions.sctp_ss_remove_from_stream(stcb, asoc, strq, sp, send_lock_up); if (sp->net) { sctp_free_remote_addr(sp->net); sp->net = NULL; } if (sp->data) { sctp_m_freem(sp->data); sp->data = NULL; } sctp_free_a_strmoq(stcb, sp, so_locked); /* we can't be locked to it */ *locked = 0; stcb->asoc.locked_on_sending = NULL; } else { /* more to go, we are locked */ - *locked = 1; + if (stcb->asoc.idata_supported == 0) + *locked = 1; } asoc->chunks_on_out_queue++; strq->chunks_on_queues++; TAILQ_INSERT_TAIL(&asoc->send_queue, chk, sctp_next); asoc->send_queue_cnt++; out_of: if (send_lock_up) { SCTP_TCB_SEND_UNLOCK(stcb); } return (to_move); } static void sctp_fill_outqueue(struct sctp_tcb *stcb, struct sctp_nets *net, int frag_point, int eeor_mode, int *quit_now, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ) { struct sctp_association *asoc; struct sctp_stream_out *strq; int goal_mtu, moved_how_much, total_moved = 0, bail = 0; int locked, giveup; SCTP_TCB_LOCK_ASSERT(stcb); asoc = &stcb->asoc; switch (net->ro._l_addr.sa.sa_family) { #ifdef INET case AF_INET: goal_mtu = net->mtu - SCTP_MIN_V4_OVERHEAD; break; #endif #ifdef INET6 case AF_INET6: goal_mtu = net->mtu - SCTP_MIN_OVERHEAD; break; #endif default: /* TSNH */ goal_mtu = net->mtu; break; } /* Need an allowance for the data chunk header too */ - goal_mtu -= sizeof(struct sctp_data_chunk); + if (stcb->asoc.idata_supported == 0) { + goal_mtu -= sizeof(struct sctp_data_chunk); + } else { + goal_mtu -= sizeof(struct sctp_idata_chunk); + } /* must make even word boundary */ goal_mtu &= 0xfffffffc; if (asoc->locked_on_sending) { /* We are stuck on one stream until the message completes. */ strq = asoc->locked_on_sending; locked = 1; } else { strq = stcb->asoc.ss_functions.sctp_ss_select_stream(stcb, net, asoc); locked = 0; } while ((goal_mtu > 0) && strq) { giveup = 0; bail = 0; moved_how_much = sctp_move_to_outqueue(stcb, strq, goal_mtu, frag_point, &locked, &giveup, eeor_mode, &bail, so_locked); if (moved_how_much) stcb->asoc.ss_functions.sctp_ss_scheduled(stcb, net, asoc, strq, moved_how_much); if (locked) { asoc->locked_on_sending = strq; if ((moved_how_much == 0) || (giveup) || bail) /* no more to move for now */ break; } else { asoc->locked_on_sending = NULL; if ((giveup) || bail) { break; } strq = stcb->asoc.ss_functions.sctp_ss_select_stream(stcb, net, asoc); if (strq == NULL) { break; } } total_moved += moved_how_much; goal_mtu -= (moved_how_much + sizeof(struct sctp_data_chunk)); goal_mtu &= 0xfffffffc; } if (bail) *quit_now = 1; stcb->asoc.ss_functions.sctp_ss_packet_done(stcb, net, asoc); if (total_moved == 0) { if ((stcb->asoc.sctp_cmt_on_off == 0) && (net == stcb->asoc.primary_destination)) { /* ran dry for primary network net */ SCTP_STAT_INCR(sctps_primary_randry); } else if (stcb->asoc.sctp_cmt_on_off > 0) { /* ran dry with CMT on */ SCTP_STAT_INCR(sctps_cmt_randry); } } } void sctp_fix_ecn_echo(struct sctp_association *asoc) { struct sctp_tmit_chunk *chk; TAILQ_FOREACH(chk, &asoc->control_send_queue, sctp_next) { if (chk->rec.chunk_id.id == SCTP_ECN_ECHO) { chk->sent = SCTP_DATAGRAM_UNSENT; } } } void sctp_move_chunks_from_net(struct sctp_tcb *stcb, struct sctp_nets *net) { struct sctp_association *asoc; struct sctp_tmit_chunk *chk; struct sctp_stream_queue_pending *sp; unsigned int i; if (net == NULL) { return; } asoc = &stcb->asoc; for (i = 0; i < stcb->asoc.streamoutcnt; i++) { TAILQ_FOREACH(sp, &stcb->asoc.strmout[i].outqueue, next) { if (sp->net == net) { sctp_free_remote_addr(sp->net); sp->net = NULL; } } } TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) { if (chk->whoTo == net) { sctp_free_remote_addr(chk->whoTo); chk->whoTo = NULL; } } } int sctp_med_chunk_output(struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sctp_association *asoc, int *num_out, int *reason_code, int control_only, int from_where, struct timeval *now, int *now_filled, int frag_point, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ) { /** * Ok this is the generic chunk service queue. we must do the - * following: - Service the stream queue that is next, moving any - * message (note I must get a complete message i.e. FIRST/MIDDLE and - * LAST to the out queue in one pass) and assigning TSN's - Check to - * see if the cwnd/rwnd allows any output, if so we go ahead and - * fomulate and send the low level chunks. Making sure to combine - * any control in the control chunk queue also. + * following: + * - Service the stream queue that is next, moving any + * message (note I must get a complete message i.e. FIRST/MIDDLE and + * LAST to the out queue in one pass) and assigning TSN's. This + * only applys though if the peer does not support NDATA. For NDATA + * chunks its ok to not send the entire message ;-) + * - Check to see if the cwnd/rwnd allows any output, if so we go ahead and + * fomulate and send the low level chunks. Making sure to combine + * any control in the control chunk queue also. */ struct sctp_nets *net, *start_at, *sack_goes_to = NULL, *old_start_at = NULL; struct mbuf *outchain, *endoutchain; struct sctp_tmit_chunk *chk, *nchk; /* temp arrays for unlinking */ struct sctp_tmit_chunk *data_list[SCTP_MAX_DATA_BUNDLING]; int no_fragmentflg, error; unsigned int max_rwnd_per_dest, max_send_per_dest; int one_chunk, hbflag, skip_data_for_this_net; int asconf, cookie, no_out_cnt; int bundle_at, ctl_cnt, no_data_chunks, eeor_mode; unsigned int mtu, r_mtu, omtu, mx_mtu, to_out; int tsns_sent = 0; uint32_t auth_offset = 0; struct sctp_auth_chunk *auth = NULL; uint16_t auth_keyid; int override_ok = 1; int skip_fill_up = 0; int data_auth_reqd = 0; /* * JRS 5/14/07 - Add flag for whether a heartbeat is sent to the * destination. */ int quit_now = 0; *num_out = 0; *reason_code = 0; auth_keyid = stcb->asoc.authinfo.active_keyid; if ((asoc->state & SCTP_STATE_SHUTDOWN_PENDING) || (asoc->state & SCTP_STATE_SHUTDOWN_RECEIVED) || (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR))) { eeor_mode = 1; } else { eeor_mode = 0; } ctl_cnt = no_out_cnt = asconf = cookie = 0; /* * First lets prime the pump. For each destination, if there is room * in the flight size, attempt to pull an MTU's worth out of the * stream queues into the general send_queue */ #ifdef SCTP_AUDITING_ENABLED sctp_audit_log(0xC2, 2); #endif SCTP_TCB_LOCK_ASSERT(stcb); hbflag = 0; if (control_only) no_data_chunks = 1; else no_data_chunks = 0; /* Nothing to possible to send? */ if ((TAILQ_EMPTY(&asoc->control_send_queue) || (asoc->ctrl_queue_cnt == stcb->asoc.ecn_echo_cnt_onq)) && TAILQ_EMPTY(&asoc->asconf_send_queue) && TAILQ_EMPTY(&asoc->send_queue) && stcb->asoc.ss_functions.sctp_ss_is_empty(stcb, asoc)) { nothing_to_send: *reason_code = 9; return (0); } if (asoc->peers_rwnd == 0) { /* No room in peers rwnd */ *reason_code = 1; if (asoc->total_flight > 0) { /* we are allowed one chunk in flight */ no_data_chunks = 1; } } if (stcb->asoc.ecn_echo_cnt_onq) { /* Record where a sack goes, if any */ if (no_data_chunks && (asoc->ctrl_queue_cnt == stcb->asoc.ecn_echo_cnt_onq)) { /* Nothing but ECNe to send - we don't do that */ goto nothing_to_send; } TAILQ_FOREACH(chk, &asoc->control_send_queue, sctp_next) { if ((chk->rec.chunk_id.id == SCTP_SELECTIVE_ACK) || (chk->rec.chunk_id.id == SCTP_NR_SELECTIVE_ACK)) { sack_goes_to = chk->whoTo; break; } } } max_rwnd_per_dest = ((asoc->peers_rwnd + asoc->total_flight) / asoc->numnets); if (stcb->sctp_socket) max_send_per_dest = SCTP_SB_LIMIT_SND(stcb->sctp_socket) / asoc->numnets; else max_send_per_dest = 0; if (no_data_chunks == 0) { /* How many non-directed chunks are there? */ TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) { if (chk->whoTo == NULL) { /* * We already have non-directed chunks on * the queue, no need to do a fill-up. */ skip_fill_up = 1; break; } } } if ((no_data_chunks == 0) && (skip_fill_up == 0) && (!stcb->asoc.ss_functions.sctp_ss_is_empty(stcb, asoc))) { TAILQ_FOREACH(net, &asoc->nets, sctp_next) { /* * This for loop we are in takes in each net, if * its's got space in cwnd and has data sent to it * (when CMT is off) then it calls * sctp_fill_outqueue for the net. This gets data on * the send queue for that network. * * In sctp_fill_outqueue TSN's are assigned and data is * copied out of the stream buffers. Note mostly * copy by reference (we hope). */ net->window_probe = 0; if ((net != stcb->asoc.alternate) && ((net->dest_state & SCTP_ADDR_PF) || (!(net->dest_state & SCTP_ADDR_REACHABLE)) || (net->dest_state & SCTP_ADDR_UNCONFIRMED))) { if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_CWND_LOGGING_ENABLE) { sctp_log_cwnd(stcb, net, 1, SCTP_CWND_LOG_FILL_OUTQ_CALLED); } continue; } if ((stcb->asoc.cc_functions.sctp_cwnd_new_transmission_begins) && (net->flight_size == 0)) { (*stcb->asoc.cc_functions.sctp_cwnd_new_transmission_begins) (stcb, net); } if (net->flight_size >= net->cwnd) { /* skip this network, no room - can't fill */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_CWND_LOGGING_ENABLE) { sctp_log_cwnd(stcb, net, 3, SCTP_CWND_LOG_FILL_OUTQ_CALLED); } continue; } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_CWND_LOGGING_ENABLE) { sctp_log_cwnd(stcb, net, 4, SCTP_CWND_LOG_FILL_OUTQ_CALLED); } sctp_fill_outqueue(stcb, net, frag_point, eeor_mode, &quit_now, so_locked); if (quit_now) { /* memory alloc failure */ no_data_chunks = 1; break; } } } /* now service each destination and send out what we can for it */ /* Nothing to send? */ if (TAILQ_EMPTY(&asoc->control_send_queue) && TAILQ_EMPTY(&asoc->asconf_send_queue) && TAILQ_EMPTY(&asoc->send_queue)) { *reason_code = 8; return (0); } if (asoc->sctp_cmt_on_off > 0) { /* get the last start point */ start_at = asoc->last_net_cmt_send_started; if (start_at == NULL) { /* null so to beginning */ start_at = TAILQ_FIRST(&asoc->nets); } else { start_at = TAILQ_NEXT(asoc->last_net_cmt_send_started, sctp_next); if (start_at == NULL) { start_at = TAILQ_FIRST(&asoc->nets); } } asoc->last_net_cmt_send_started = start_at; } else { start_at = TAILQ_FIRST(&asoc->nets); } TAILQ_FOREACH(chk, &asoc->control_send_queue, sctp_next) { if (chk->whoTo == NULL) { if (asoc->alternate) { chk->whoTo = asoc->alternate; } else { chk->whoTo = asoc->primary_destination; } atomic_add_int(&chk->whoTo->ref_count, 1); } } old_start_at = NULL; again_one_more_time: for (net = start_at; net != NULL; net = TAILQ_NEXT(net, sctp_next)) { /* how much can we send? */ /* SCTPDBG("Examine for sending net:%x\n", (uint32_t)net); */ if (old_start_at && (old_start_at == net)) { /* through list ocmpletely. */ break; } tsns_sent = 0xa; if (TAILQ_EMPTY(&asoc->control_send_queue) && TAILQ_EMPTY(&asoc->asconf_send_queue) && (net->flight_size >= net->cwnd)) { /* * Nothing on control or asconf and flight is full, * we can skip even in the CMT case. */ continue; } bundle_at = 0; endoutchain = outchain = NULL; no_fragmentflg = 1; one_chunk = 0; if (net->dest_state & SCTP_ADDR_UNCONFIRMED) { skip_data_for_this_net = 1; } else { skip_data_for_this_net = 0; } switch (((struct sockaddr *)&net->ro._l_addr)->sa_family) { #ifdef INET case AF_INET: mtu = net->mtu - SCTP_MIN_V4_OVERHEAD; break; #endif #ifdef INET6 case AF_INET6: mtu = net->mtu - SCTP_MIN_OVERHEAD; break; #endif default: /* TSNH */ mtu = net->mtu; break; } mx_mtu = mtu; to_out = 0; if (mtu > asoc->peers_rwnd) { if (asoc->total_flight > 0) { /* We have a packet in flight somewhere */ r_mtu = asoc->peers_rwnd; } else { /* We are always allowed to send one MTU out */ one_chunk = 1; r_mtu = mtu; } } else { r_mtu = mtu; } error = 0; /************************/ /* ASCONF transmission */ /************************/ /* Now first lets go through the asconf queue */ TAILQ_FOREACH_SAFE(chk, &asoc->asconf_send_queue, sctp_next, nchk) { if (chk->rec.chunk_id.id != SCTP_ASCONF) { continue; } if (chk->whoTo == NULL) { if (asoc->alternate == NULL) { if (asoc->primary_destination != net) { break; } } else { if (asoc->alternate != net) { break; } } } else { if (chk->whoTo != net) { break; } } if (chk->data == NULL) { break; } if (chk->sent != SCTP_DATAGRAM_UNSENT && chk->sent != SCTP_DATAGRAM_RESEND) { break; } /* * if no AUTH is yet included and this chunk * requires it, make sure to account for it. We * don't apply the size until the AUTH chunk is * actually added below in case there is no room for * this chunk. NOTE: we overload the use of "omtu" * here */ if ((auth == NULL) && sctp_auth_is_required_chunk(chk->rec.chunk_id.id, stcb->asoc.peer_auth_chunks)) { omtu = sctp_get_auth_chunk_len(stcb->asoc.peer_hmac_id); } else omtu = 0; /* Here we do NOT factor the r_mtu */ if ((chk->send_size < (int)(mtu - omtu)) || (chk->flags & CHUNK_FLAGS_FRAGMENT_OK)) { /* * We probably should glom the mbuf chain * from the chk->data for control but the * problem is it becomes yet one more level * of tracking to do if for some reason * output fails. Then I have got to * reconstruct the merged control chain.. el * yucko.. for now we take the easy way and * do the copy */ /* * Add an AUTH chunk, if chunk requires it * save the offset into the chain for AUTH */ if ((auth == NULL) && (sctp_auth_is_required_chunk(chk->rec.chunk_id.id, stcb->asoc.peer_auth_chunks))) { outchain = sctp_add_auth_chunk(outchain, &endoutchain, &auth, &auth_offset, stcb, chk->rec.chunk_id.id); SCTP_STAT_INCR_COUNTER64(sctps_outcontrolchunks); } outchain = sctp_copy_mbufchain(chk->data, outchain, &endoutchain, (int)chk->rec.chunk_id.can_take_data, chk->send_size, chk->copy_by_ref); if (outchain == NULL) { *reason_code = 8; SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, ENOMEM); return (ENOMEM); } SCTP_STAT_INCR_COUNTER64(sctps_outcontrolchunks); /* update our MTU size */ if (mtu > (chk->send_size + omtu)) mtu -= (chk->send_size + omtu); else mtu = 0; to_out += (chk->send_size + omtu); /* Do clear IP_DF ? */ if (chk->flags & CHUNK_FLAGS_FRAGMENT_OK) { no_fragmentflg = 0; } if (chk->rec.chunk_id.can_take_data) chk->data = NULL; /* * set hb flag since we can use these for * RTO */ hbflag = 1; asconf = 1; /* * should sysctl this: don't bundle data * with ASCONF since it requires AUTH */ no_data_chunks = 1; chk->sent = SCTP_DATAGRAM_SENT; if (chk->whoTo == NULL) { chk->whoTo = net; atomic_add_int(&net->ref_count, 1); } chk->snd_count++; if (mtu == 0) { /* * Ok we are out of room but we can * output without effecting the * flight size since this little guy * is a control only packet. */ sctp_timer_start(SCTP_TIMER_TYPE_ASCONF, inp, stcb, net); /* * do NOT clear the asconf flag as * it is used to do appropriate * source address selection. */ if (*now_filled == 0) { (void)SCTP_GETTIME_TIMEVAL(now); *now_filled = 1; } net->last_sent_time = *now; hbflag = 0; if ((error = sctp_lowlevel_chunk_output(inp, stcb, net, (struct sockaddr *)&net->ro._l_addr, outchain, auth_offset, auth, stcb->asoc.authinfo.active_keyid, no_fragmentflg, 0, asconf, inp->sctp_lport, stcb->rport, htonl(stcb->asoc.peer_vtag), net->port, NULL, 0, 0, so_locked))) { /* * error, we could not * output */ SCTPDBG(SCTP_DEBUG_OUTPUT3, "Gak send error %d\n", error); if (from_where == 0) { SCTP_STAT_INCR(sctps_lowlevelerrusr); } if (error == ENOBUFS) { asoc->ifp_had_enobuf = 1; SCTP_STAT_INCR(sctps_lowlevelerr); } /* error, could not output */ if (error == EHOSTUNREACH) { /* * Destination went * unreachable * during this send */ sctp_move_chunks_from_net(stcb, net); } *reason_code = 7; break; } else { asoc->ifp_had_enobuf = 0; } /* * increase the number we sent, if a * cookie is sent we don't tell them * any was sent out. */ outchain = endoutchain = NULL; auth = NULL; auth_offset = 0; if (!no_out_cnt) *num_out += ctl_cnt; /* recalc a clean slate and setup */ switch (net->ro._l_addr.sa.sa_family) { #ifdef INET case AF_INET: mtu = net->mtu - SCTP_MIN_V4_OVERHEAD; break; #endif #ifdef INET6 case AF_INET6: mtu = net->mtu - SCTP_MIN_OVERHEAD; break; #endif default: /* TSNH */ mtu = net->mtu; break; } to_out = 0; no_fragmentflg = 1; } } } if (error != 0) { /* try next net */ continue; } /************************/ /* Control transmission */ /************************/ /* Now first lets go through the control queue */ TAILQ_FOREACH_SAFE(chk, &asoc->control_send_queue, sctp_next, nchk) { if ((sack_goes_to) && (chk->rec.chunk_id.id == SCTP_ECN_ECHO) && (chk->whoTo != sack_goes_to)) { /* * if we have a sack in queue, and we are * looking at an ecn echo that is NOT queued * to where the sack is going.. */ if (chk->whoTo == net) { /* * Don't transmit it to where its * going (current net) */ continue; } else if (sack_goes_to == net) { /* * But do transmit it to this * address */ goto skip_net_check; } } if (chk->whoTo == NULL) { if (asoc->alternate == NULL) { if (asoc->primary_destination != net) { continue; } } else { if (asoc->alternate != net) { continue; } } } else { if (chk->whoTo != net) { continue; } } skip_net_check: if (chk->data == NULL) { continue; } if (chk->sent != SCTP_DATAGRAM_UNSENT) { /* * It must be unsent. Cookies and ASCONF's * hang around but there timers will force * when marked for resend. */ continue; } /* * if no AUTH is yet included and this chunk * requires it, make sure to account for it. We * don't apply the size until the AUTH chunk is * actually added below in case there is no room for * this chunk. NOTE: we overload the use of "omtu" * here */ if ((auth == NULL) && sctp_auth_is_required_chunk(chk->rec.chunk_id.id, stcb->asoc.peer_auth_chunks)) { omtu = sctp_get_auth_chunk_len(stcb->asoc.peer_hmac_id); } else omtu = 0; /* Here we do NOT factor the r_mtu */ if ((chk->send_size <= (int)(mtu - omtu)) || (chk->flags & CHUNK_FLAGS_FRAGMENT_OK)) { /* * We probably should glom the mbuf chain * from the chk->data for control but the * problem is it becomes yet one more level * of tracking to do if for some reason * output fails. Then I have got to * reconstruct the merged control chain.. el * yucko.. for now we take the easy way and * do the copy */ /* * Add an AUTH chunk, if chunk requires it * save the offset into the chain for AUTH */ if ((auth == NULL) && (sctp_auth_is_required_chunk(chk->rec.chunk_id.id, stcb->asoc.peer_auth_chunks))) { outchain = sctp_add_auth_chunk(outchain, &endoutchain, &auth, &auth_offset, stcb, chk->rec.chunk_id.id); SCTP_STAT_INCR_COUNTER64(sctps_outcontrolchunks); } outchain = sctp_copy_mbufchain(chk->data, outchain, &endoutchain, (int)chk->rec.chunk_id.can_take_data, chk->send_size, chk->copy_by_ref); if (outchain == NULL) { *reason_code = 8; SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, ENOMEM); return (ENOMEM); } SCTP_STAT_INCR_COUNTER64(sctps_outcontrolchunks); /* update our MTU size */ if (mtu > (chk->send_size + omtu)) mtu -= (chk->send_size + omtu); else mtu = 0; to_out += (chk->send_size + omtu); /* Do clear IP_DF ? */ if (chk->flags & CHUNK_FLAGS_FRAGMENT_OK) { no_fragmentflg = 0; } if (chk->rec.chunk_id.can_take_data) chk->data = NULL; /* Mark things to be removed, if needed */ if ((chk->rec.chunk_id.id == SCTP_SELECTIVE_ACK) || (chk->rec.chunk_id.id == SCTP_NR_SELECTIVE_ACK) || /* EY */ (chk->rec.chunk_id.id == SCTP_HEARTBEAT_REQUEST) || (chk->rec.chunk_id.id == SCTP_HEARTBEAT_ACK) || (chk->rec.chunk_id.id == SCTP_SHUTDOWN) || (chk->rec.chunk_id.id == SCTP_SHUTDOWN_ACK) || (chk->rec.chunk_id.id == SCTP_OPERATION_ERROR) || (chk->rec.chunk_id.id == SCTP_COOKIE_ACK) || (chk->rec.chunk_id.id == SCTP_ECN_CWR) || (chk->rec.chunk_id.id == SCTP_PACKET_DROPPED) || (chk->rec.chunk_id.id == SCTP_ASCONF_ACK)) { if (chk->rec.chunk_id.id == SCTP_HEARTBEAT_REQUEST) { hbflag = 1; } /* remove these chunks at the end */ if ((chk->rec.chunk_id.id == SCTP_SELECTIVE_ACK) || (chk->rec.chunk_id.id == SCTP_NR_SELECTIVE_ACK)) { /* turn off the timer */ if (SCTP_OS_TIMER_PENDING(&stcb->asoc.dack_timer.timer)) { sctp_timer_stop(SCTP_TIMER_TYPE_RECV, inp, stcb, net, SCTP_FROM_SCTP_OUTPUT + SCTP_LOC_1); } } ctl_cnt++; } else { /* * Other chunks, since they have * timers running (i.e. COOKIE) we * just "trust" that it gets sent or * retransmitted. */ ctl_cnt++; if (chk->rec.chunk_id.id == SCTP_COOKIE_ECHO) { cookie = 1; no_out_cnt = 1; } else if (chk->rec.chunk_id.id == SCTP_ECN_ECHO) { /* * Increment ecne send count * here this means we may be * over-zealous in our * counting if the send * fails, but its the best * place to do it (we used * to do it in the queue of * the chunk, but that did * not tell how many times * it was sent. */ SCTP_STAT_INCR(sctps_sendecne); } chk->sent = SCTP_DATAGRAM_SENT; if (chk->whoTo == NULL) { chk->whoTo = net; atomic_add_int(&net->ref_count, 1); } chk->snd_count++; } if (mtu == 0) { /* * Ok we are out of room but we can * output without effecting the * flight size since this little guy * is a control only packet. */ if (asconf) { sctp_timer_start(SCTP_TIMER_TYPE_ASCONF, inp, stcb, net); /* * do NOT clear the asconf * flag as it is used to do * appropriate source * address selection. */ } if (cookie) { sctp_timer_start(SCTP_TIMER_TYPE_COOKIE, inp, stcb, net); cookie = 0; } /* Only HB or ASCONF advances time */ if (hbflag) { if (*now_filled == 0) { (void)SCTP_GETTIME_TIMEVAL(now); *now_filled = 1; } net->last_sent_time = *now; hbflag = 0; } if ((error = sctp_lowlevel_chunk_output(inp, stcb, net, (struct sockaddr *)&net->ro._l_addr, outchain, auth_offset, auth, stcb->asoc.authinfo.active_keyid, no_fragmentflg, 0, asconf, inp->sctp_lport, stcb->rport, htonl(stcb->asoc.peer_vtag), net->port, NULL, 0, 0, so_locked))) { /* * error, we could not * output */ SCTPDBG(SCTP_DEBUG_OUTPUT3, "Gak send error %d\n", error); if (from_where == 0) { SCTP_STAT_INCR(sctps_lowlevelerrusr); } if (error == ENOBUFS) { asoc->ifp_had_enobuf = 1; SCTP_STAT_INCR(sctps_lowlevelerr); } if (error == EHOSTUNREACH) { /* * Destination went * unreachable * during this send */ sctp_move_chunks_from_net(stcb, net); } *reason_code = 7; break; } else { asoc->ifp_had_enobuf = 0; } /* * increase the number we sent, if a * cookie is sent we don't tell them * any was sent out. */ outchain = endoutchain = NULL; auth = NULL; auth_offset = 0; if (!no_out_cnt) *num_out += ctl_cnt; /* recalc a clean slate and setup */ switch (net->ro._l_addr.sa.sa_family) { #ifdef INET case AF_INET: mtu = net->mtu - SCTP_MIN_V4_OVERHEAD; break; #endif #ifdef INET6 case AF_INET6: mtu = net->mtu - SCTP_MIN_OVERHEAD; break; #endif default: /* TSNH */ mtu = net->mtu; break; } to_out = 0; no_fragmentflg = 1; } } } if (error != 0) { /* try next net */ continue; } /* JRI: if dest is in PF state, do not send data to it */ if ((asoc->sctp_cmt_on_off > 0) && (net != stcb->asoc.alternate) && (net->dest_state & SCTP_ADDR_PF)) { goto no_data_fill; } if (net->flight_size >= net->cwnd) { goto no_data_fill; } if ((asoc->sctp_cmt_on_off > 0) && (SCTP_BASE_SYSCTL(sctp_buffer_splitting) & SCTP_RECV_BUFFER_SPLITTING) && (net->flight_size > max_rwnd_per_dest)) { goto no_data_fill; } /* * We need a specific accounting for the usage of the send * buffer. We also need to check the number of messages per * net. For now, this is better than nothing and it disabled * by default... */ if ((asoc->sctp_cmt_on_off > 0) && (SCTP_BASE_SYSCTL(sctp_buffer_splitting) & SCTP_SEND_BUFFER_SPLITTING) && (max_send_per_dest > 0) && (net->flight_size > max_send_per_dest)) { goto no_data_fill; } /*********************/ /* Data transmission */ /*********************/ /* * if AUTH for DATA is required and no AUTH has been added * yet, account for this in the mtu now... if no data can be * bundled, this adjustment won't matter anyways since the * packet will be going out... */ data_auth_reqd = sctp_auth_is_required_chunk(SCTP_DATA, stcb->asoc.peer_auth_chunks); if (data_auth_reqd && (auth == NULL)) { mtu -= sctp_get_auth_chunk_len(stcb->asoc.peer_hmac_id); } /* now lets add any data within the MTU constraints */ switch (((struct sockaddr *)&net->ro._l_addr)->sa_family) { #ifdef INET case AF_INET: if (net->mtu > SCTP_MIN_V4_OVERHEAD) omtu = net->mtu - SCTP_MIN_V4_OVERHEAD; else omtu = 0; break; #endif #ifdef INET6 case AF_INET6: if (net->mtu > SCTP_MIN_OVERHEAD) omtu = net->mtu - SCTP_MIN_OVERHEAD; else omtu = 0; break; #endif default: /* TSNH */ omtu = 0; break; } if ((((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) || (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) && (skip_data_for_this_net == 0)) || (cookie)) { TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) { if (no_data_chunks) { /* let only control go out */ *reason_code = 1; break; } if (net->flight_size >= net->cwnd) { /* skip this net, no room for data */ *reason_code = 2; break; } if ((chk->whoTo != NULL) && (chk->whoTo != net)) { /* Don't send the chunk on this net */ continue; } if (asoc->sctp_cmt_on_off == 0) { if ((asoc->alternate) && (asoc->alternate != net) && (chk->whoTo == NULL)) { continue; } else if ((net != asoc->primary_destination) && (asoc->alternate == NULL) && (chk->whoTo == NULL)) { continue; } } if ((chk->send_size > omtu) && ((chk->flags & CHUNK_FLAGS_FRAGMENT_OK) == 0)) { /*- * strange, we have a chunk that is * to big for its destination and * yet no fragment ok flag. * Something went wrong when the * PMTU changed...we did not mark * this chunk for some reason?? I * will fix it here by letting IP * fragment it for now and printing * a warning. This really should not * happen ... */ SCTP_PRINTF("Warning chunk of %d bytes > mtu:%d and yet PMTU disc missed\n", chk->send_size, mtu); chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; } if (SCTP_BASE_SYSCTL(sctp_enable_sack_immediately) && ((asoc->state & SCTP_STATE_SHUTDOWN_PENDING) == SCTP_STATE_SHUTDOWN_PENDING)) { struct sctp_data_chunk *dchkh; dchkh = mtod(chk->data, struct sctp_data_chunk *); dchkh->ch.chunk_flags |= SCTP_DATA_SACK_IMMEDIATELY; } if (((chk->send_size <= mtu) && (chk->send_size <= r_mtu)) || ((chk->flags & CHUNK_FLAGS_FRAGMENT_OK) && (chk->send_size <= asoc->peers_rwnd))) { /* ok we will add this one */ /* * Add an AUTH chunk, if chunk * requires it, save the offset into * the chain for AUTH */ if (data_auth_reqd) { if (auth == NULL) { outchain = sctp_add_auth_chunk(outchain, &endoutchain, &auth, &auth_offset, stcb, SCTP_DATA); auth_keyid = chk->auth_keyid; override_ok = 0; SCTP_STAT_INCR_COUNTER64(sctps_outcontrolchunks); } else if (override_ok) { /* * use this data's * keyid */ auth_keyid = chk->auth_keyid; override_ok = 0; } else if (auth_keyid != chk->auth_keyid) { /* * different keyid, * so done bundling */ break; } } outchain = sctp_copy_mbufchain(chk->data, outchain, &endoutchain, 0, chk->send_size, chk->copy_by_ref); if (outchain == NULL) { SCTPDBG(SCTP_DEBUG_OUTPUT3, "No memory?\n"); if (!SCTP_OS_TIMER_PENDING(&net->rxt_timer.timer)) { sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb, net); } *reason_code = 3; SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, ENOMEM); return (ENOMEM); } /* upate our MTU size */ /* Do clear IP_DF ? */ if (chk->flags & CHUNK_FLAGS_FRAGMENT_OK) { no_fragmentflg = 0; } /* unsigned subtraction of mtu */ if (mtu > chk->send_size) mtu -= chk->send_size; else mtu = 0; /* unsigned subtraction of r_mtu */ if (r_mtu > chk->send_size) r_mtu -= chk->send_size; else r_mtu = 0; to_out += chk->send_size; if ((to_out > mx_mtu) && no_fragmentflg) { #ifdef INVARIANTS panic("Exceeding mtu of %d out size is %d", mx_mtu, to_out); #else SCTP_PRINTF("Exceeding mtu of %d out size is %d\n", mx_mtu, to_out); #endif } chk->window_probe = 0; data_list[bundle_at++] = chk; if (bundle_at >= SCTP_MAX_DATA_BUNDLING) { break; } if (chk->sent == SCTP_DATAGRAM_UNSENT) { if ((chk->rec.data.rcv_flags & SCTP_DATA_UNORDERED) == 0) { SCTP_STAT_INCR_COUNTER64(sctps_outorderchunks); } else { SCTP_STAT_INCR_COUNTER64(sctps_outunorderchunks); } if (((chk->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) == SCTP_DATA_LAST_FRAG) && ((chk->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG) == 0)) /* * Count number of * user msg's that * were fragmented * we do this by * counting when we * see a LAST * fragment only. */ SCTP_STAT_INCR_COUNTER64(sctps_fragusrmsgs); } if ((mtu == 0) || (r_mtu == 0) || (one_chunk)) { if ((one_chunk) && (stcb->asoc.total_flight == 0)) { data_list[0]->window_probe = 1; net->window_probe = 1; } break; } } else { /* * Must be sent in order of the * TSN's (on a network) */ break; } } /* for (chunk gather loop for this net) */ } /* if asoc.state OPEN */ no_data_fill: /* Is there something to send for this destination? */ if (outchain) { /* We may need to start a control timer or two */ if (asconf) { sctp_timer_start(SCTP_TIMER_TYPE_ASCONF, inp, stcb, net); /* * do NOT clear the asconf flag as it is * used to do appropriate source address * selection. */ } if (cookie) { sctp_timer_start(SCTP_TIMER_TYPE_COOKIE, inp, stcb, net); cookie = 0; } /* must start a send timer if data is being sent */ if (bundle_at && (!SCTP_OS_TIMER_PENDING(&net->rxt_timer.timer))) { /* * no timer running on this destination * restart it. */ sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb, net); } if (bundle_at || hbflag) { /* For data/asconf and hb set time */ if (*now_filled == 0) { (void)SCTP_GETTIME_TIMEVAL(now); *now_filled = 1; } net->last_sent_time = *now; } /* Now send it, if there is anything to send :> */ if ((error = sctp_lowlevel_chunk_output(inp, stcb, net, (struct sockaddr *)&net->ro._l_addr, outchain, auth_offset, auth, auth_keyid, no_fragmentflg, bundle_at, asconf, inp->sctp_lport, stcb->rport, htonl(stcb->asoc.peer_vtag), net->port, NULL, 0, 0, so_locked))) { /* error, we could not output */ SCTPDBG(SCTP_DEBUG_OUTPUT3, "Gak send error %d\n", error); if (from_where == 0) { SCTP_STAT_INCR(sctps_lowlevelerrusr); } if (error == ENOBUFS) { SCTP_STAT_INCR(sctps_lowlevelerr); asoc->ifp_had_enobuf = 1; } if (error == EHOSTUNREACH) { /* * Destination went unreachable * during this send */ sctp_move_chunks_from_net(stcb, net); } *reason_code = 6; /*- * I add this line to be paranoid. As far as * I can tell the continue, takes us back to * the top of the for, but just to make sure * I will reset these again here. */ ctl_cnt = bundle_at = 0; continue; /* This takes us back to the * for() for the nets. */ } else { asoc->ifp_had_enobuf = 0; } endoutchain = NULL; auth = NULL; auth_offset = 0; if (!no_out_cnt) { *num_out += (ctl_cnt + bundle_at); } if (bundle_at) { /* setup for a RTO measurement */ tsns_sent = data_list[0]->rec.data.TSN_seq; /* fill time if not already filled */ if (*now_filled == 0) { (void)SCTP_GETTIME_TIMEVAL(&asoc->time_last_sent); *now_filled = 1; *now = asoc->time_last_sent; } else { asoc->time_last_sent = *now; } if (net->rto_needed) { data_list[0]->do_rtt = 1; net->rto_needed = 0; } SCTP_STAT_INCR_BY(sctps_senddata, bundle_at); sctp_clean_up_datalist(stcb, asoc, data_list, bundle_at, net); } if (one_chunk) { break; } } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_CWND_LOGGING_ENABLE) { sctp_log_cwnd(stcb, net, tsns_sent, SCTP_CWND_LOG_FROM_SEND); } } if (old_start_at == NULL) { old_start_at = start_at; start_at = TAILQ_FIRST(&asoc->nets); if (old_start_at) goto again_one_more_time; } /* * At the end there should be no NON timed chunks hanging on this * queue. */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_CWND_LOGGING_ENABLE) { sctp_log_cwnd(stcb, net, *num_out, SCTP_CWND_LOG_FROM_SEND); } if ((*num_out == 0) && (*reason_code == 0)) { *reason_code = 4; } else { *reason_code = 5; } sctp_clean_up_ctl(stcb, asoc, so_locked); return (0); } void sctp_queue_op_err(struct sctp_tcb *stcb, struct mbuf *op_err) { /*- * Prepend a OPERATIONAL_ERROR chunk header and put on the end of * the control chunk queue. */ struct sctp_chunkhdr *hdr; struct sctp_tmit_chunk *chk; struct mbuf *mat, *last_mbuf; uint32_t chunk_length; uint16_t padding_length; SCTP_TCB_LOCK_ASSERT(stcb); SCTP_BUF_PREPEND(op_err, sizeof(struct sctp_chunkhdr), M_NOWAIT); if (op_err == NULL) { return; } last_mbuf = NULL; chunk_length = 0; for (mat = op_err; mat != NULL; mat = SCTP_BUF_NEXT(mat)) { chunk_length += SCTP_BUF_LEN(mat); if (SCTP_BUF_NEXT(mat) == NULL) { last_mbuf = mat; } } if (chunk_length > SCTP_MAX_CHUNK_LENGTH) { sctp_m_freem(op_err); return; } padding_length = chunk_length % 4; if (padding_length != 0) { padding_length = 4 - padding_length; } if (padding_length != 0) { if (sctp_add_pad_tombuf(last_mbuf, padding_length) == NULL) { sctp_m_freem(op_err); return; } } sctp_alloc_a_chunk(stcb, chk); if (chk == NULL) { /* no memory */ sctp_m_freem(op_err); return; } chk->copy_by_ref = 0; chk->send_size = (uint16_t) chunk_length; chk->sent = SCTP_DATAGRAM_UNSENT; chk->snd_count = 0; chk->asoc = &stcb->asoc; chk->data = op_err; chk->whoTo = NULL; chk->rec.chunk_id.id = SCTP_OPERATION_ERROR; chk->rec.chunk_id.can_take_data = 0; hdr = mtod(op_err, struct sctp_chunkhdr *); hdr->chunk_type = SCTP_OPERATION_ERROR; hdr->chunk_flags = 0; hdr->chunk_length = htons(chk->send_size); TAILQ_INSERT_TAIL(&chk->asoc->control_send_queue, chk, sctp_next); chk->asoc->ctrl_queue_cnt++; } int sctp_send_cookie_echo(struct mbuf *m, int offset, struct sctp_tcb *stcb, struct sctp_nets *net) { /*- * pull out the cookie and put it at the front of the control chunk * queue. */ int at; struct mbuf *cookie; struct sctp_paramhdr parm, *phdr; struct sctp_chunkhdr *hdr; struct sctp_tmit_chunk *chk; uint16_t ptype, plen; SCTP_TCB_LOCK_ASSERT(stcb); /* First find the cookie in the param area */ cookie = NULL; at = offset + sizeof(struct sctp_init_chunk); for (;;) { phdr = sctp_get_next_param(m, at, &parm, sizeof(parm)); if (phdr == NULL) { return (-3); } ptype = ntohs(phdr->param_type); plen = ntohs(phdr->param_length); if (ptype == SCTP_STATE_COOKIE) { int pad; /* found the cookie */ if ((pad = (plen % 4))) { plen += 4 - pad; } cookie = SCTP_M_COPYM(m, at, plen, M_NOWAIT); if (cookie == NULL) { /* No memory */ return (-2); } #ifdef SCTP_MBUF_LOGGING if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) { sctp_log_mbc(cookie, SCTP_MBUF_ICOPY); } #endif break; } at += SCTP_SIZE32(plen); } /* ok, we got the cookie lets change it into a cookie echo chunk */ /* first the change from param to cookie */ hdr = mtod(cookie, struct sctp_chunkhdr *); hdr->chunk_type = SCTP_COOKIE_ECHO; hdr->chunk_flags = 0; /* get the chunk stuff now and place it in the FRONT of the queue */ sctp_alloc_a_chunk(stcb, chk); if (chk == NULL) { /* no memory */ sctp_m_freem(cookie); return (-5); } chk->copy_by_ref = 0; chk->rec.chunk_id.id = SCTP_COOKIE_ECHO; chk->rec.chunk_id.can_take_data = 0; chk->flags = CHUNK_FLAGS_FRAGMENT_OK; chk->send_size = plen; chk->sent = SCTP_DATAGRAM_UNSENT; chk->snd_count = 0; chk->asoc = &stcb->asoc; chk->data = cookie; chk->whoTo = net; atomic_add_int(&chk->whoTo->ref_count, 1); TAILQ_INSERT_HEAD(&chk->asoc->control_send_queue, chk, sctp_next); chk->asoc->ctrl_queue_cnt++; return (0); } void sctp_send_heartbeat_ack(struct sctp_tcb *stcb, struct mbuf *m, int offset, int chk_length, struct sctp_nets *net) { /* * take a HB request and make it into a HB ack and send it. */ struct mbuf *outchain; struct sctp_chunkhdr *chdr; struct sctp_tmit_chunk *chk; if (net == NULL) /* must have a net pointer */ return; outchain = SCTP_M_COPYM(m, offset, chk_length, M_NOWAIT); if (outchain == NULL) { /* gak out of memory */ return; } #ifdef SCTP_MBUF_LOGGING if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) { sctp_log_mbc(outchain, SCTP_MBUF_ICOPY); } #endif chdr = mtod(outchain, struct sctp_chunkhdr *); chdr->chunk_type = SCTP_HEARTBEAT_ACK; chdr->chunk_flags = 0; if (chk_length % 4) { /* need pad */ uint32_t cpthis = 0; int padlen; padlen = 4 - (chk_length % 4); m_copyback(outchain, chk_length, padlen, (caddr_t)&cpthis); } sctp_alloc_a_chunk(stcb, chk); if (chk == NULL) { /* no memory */ sctp_m_freem(outchain); return; } chk->copy_by_ref = 0; chk->rec.chunk_id.id = SCTP_HEARTBEAT_ACK; chk->rec.chunk_id.can_take_data = 1; chk->flags = 0; chk->send_size = chk_length; chk->sent = SCTP_DATAGRAM_UNSENT; chk->snd_count = 0; chk->asoc = &stcb->asoc; chk->data = outchain; chk->whoTo = net; atomic_add_int(&chk->whoTo->ref_count, 1); TAILQ_INSERT_TAIL(&chk->asoc->control_send_queue, chk, sctp_next); chk->asoc->ctrl_queue_cnt++; } void sctp_send_cookie_ack(struct sctp_tcb *stcb) { /* formulate and queue a cookie-ack back to sender */ struct mbuf *cookie_ack; struct sctp_chunkhdr *hdr; struct sctp_tmit_chunk *chk; SCTP_TCB_LOCK_ASSERT(stcb); cookie_ack = sctp_get_mbuf_for_msg(sizeof(struct sctp_chunkhdr), 0, M_NOWAIT, 1, MT_HEADER); if (cookie_ack == NULL) { /* no mbuf's */ return; } SCTP_BUF_RESV_UF(cookie_ack, SCTP_MIN_OVERHEAD); sctp_alloc_a_chunk(stcb, chk); if (chk == NULL) { /* no memory */ sctp_m_freem(cookie_ack); return; } chk->copy_by_ref = 0; chk->rec.chunk_id.id = SCTP_COOKIE_ACK; chk->rec.chunk_id.can_take_data = 1; chk->flags = 0; chk->send_size = sizeof(struct sctp_chunkhdr); chk->sent = SCTP_DATAGRAM_UNSENT; chk->snd_count = 0; chk->asoc = &stcb->asoc; chk->data = cookie_ack; if (chk->asoc->last_control_chunk_from != NULL) { chk->whoTo = chk->asoc->last_control_chunk_from; atomic_add_int(&chk->whoTo->ref_count, 1); } else { chk->whoTo = NULL; } hdr = mtod(cookie_ack, struct sctp_chunkhdr *); hdr->chunk_type = SCTP_COOKIE_ACK; hdr->chunk_flags = 0; hdr->chunk_length = htons(chk->send_size); SCTP_BUF_LEN(cookie_ack) = chk->send_size; TAILQ_INSERT_TAIL(&chk->asoc->control_send_queue, chk, sctp_next); chk->asoc->ctrl_queue_cnt++; return; } void sctp_send_shutdown_ack(struct sctp_tcb *stcb, struct sctp_nets *net) { /* formulate and queue a SHUTDOWN-ACK back to the sender */ struct mbuf *m_shutdown_ack; struct sctp_shutdown_ack_chunk *ack_cp; struct sctp_tmit_chunk *chk; m_shutdown_ack = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_ack_chunk), 0, M_NOWAIT, 1, MT_HEADER); if (m_shutdown_ack == NULL) { /* no mbuf's */ return; } SCTP_BUF_RESV_UF(m_shutdown_ack, SCTP_MIN_OVERHEAD); sctp_alloc_a_chunk(stcb, chk); if (chk == NULL) { /* no memory */ sctp_m_freem(m_shutdown_ack); return; } chk->copy_by_ref = 0; chk->rec.chunk_id.id = SCTP_SHUTDOWN_ACK; chk->rec.chunk_id.can_take_data = 1; chk->flags = 0; chk->send_size = sizeof(struct sctp_chunkhdr); chk->sent = SCTP_DATAGRAM_UNSENT; chk->snd_count = 0; chk->flags = 0; chk->asoc = &stcb->asoc; chk->data = m_shutdown_ack; chk->whoTo = net; if (chk->whoTo) { atomic_add_int(&chk->whoTo->ref_count, 1); } ack_cp = mtod(m_shutdown_ack, struct sctp_shutdown_ack_chunk *); ack_cp->ch.chunk_type = SCTP_SHUTDOWN_ACK; ack_cp->ch.chunk_flags = 0; ack_cp->ch.chunk_length = htons(chk->send_size); SCTP_BUF_LEN(m_shutdown_ack) = chk->send_size; TAILQ_INSERT_TAIL(&chk->asoc->control_send_queue, chk, sctp_next); chk->asoc->ctrl_queue_cnt++; return; } void sctp_send_shutdown(struct sctp_tcb *stcb, struct sctp_nets *net) { /* formulate and queue a SHUTDOWN to the sender */ struct mbuf *m_shutdown; struct sctp_shutdown_chunk *shutdown_cp; struct sctp_tmit_chunk *chk; m_shutdown = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_chunk), 0, M_NOWAIT, 1, MT_HEADER); if (m_shutdown == NULL) { /* no mbuf's */ return; } SCTP_BUF_RESV_UF(m_shutdown, SCTP_MIN_OVERHEAD); sctp_alloc_a_chunk(stcb, chk); if (chk == NULL) { /* no memory */ sctp_m_freem(m_shutdown); return; } chk->copy_by_ref = 0; chk->rec.chunk_id.id = SCTP_SHUTDOWN; chk->rec.chunk_id.can_take_data = 1; chk->flags = 0; chk->send_size = sizeof(struct sctp_shutdown_chunk); chk->sent = SCTP_DATAGRAM_UNSENT; chk->snd_count = 0; chk->flags = 0; chk->asoc = &stcb->asoc; chk->data = m_shutdown; chk->whoTo = net; if (chk->whoTo) { atomic_add_int(&chk->whoTo->ref_count, 1); } shutdown_cp = mtod(m_shutdown, struct sctp_shutdown_chunk *); shutdown_cp->ch.chunk_type = SCTP_SHUTDOWN; shutdown_cp->ch.chunk_flags = 0; shutdown_cp->ch.chunk_length = htons(chk->send_size); shutdown_cp->cumulative_tsn_ack = htonl(stcb->asoc.cumulative_tsn); SCTP_BUF_LEN(m_shutdown) = chk->send_size; TAILQ_INSERT_TAIL(&chk->asoc->control_send_queue, chk, sctp_next); chk->asoc->ctrl_queue_cnt++; return; } void sctp_send_asconf(struct sctp_tcb *stcb, struct sctp_nets *net, int addr_locked) { /* * formulate and queue an ASCONF to the peer. ASCONF parameters * should be queued on the assoc queue. */ struct sctp_tmit_chunk *chk; struct mbuf *m_asconf; int len; SCTP_TCB_LOCK_ASSERT(stcb); if ((!TAILQ_EMPTY(&stcb->asoc.asconf_send_queue)) && (!sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS))) { /* can't send a new one if there is one in flight already */ return; } /* compose an ASCONF chunk, maximum length is PMTU */ m_asconf = sctp_compose_asconf(stcb, &len, addr_locked); if (m_asconf == NULL) { return; } sctp_alloc_a_chunk(stcb, chk); if (chk == NULL) { /* no memory */ sctp_m_freem(m_asconf); return; } chk->copy_by_ref = 0; chk->rec.chunk_id.id = SCTP_ASCONF; chk->rec.chunk_id.can_take_data = 0; chk->flags = CHUNK_FLAGS_FRAGMENT_OK; chk->data = m_asconf; chk->send_size = len; chk->sent = SCTP_DATAGRAM_UNSENT; chk->snd_count = 0; chk->asoc = &stcb->asoc; chk->whoTo = net; if (chk->whoTo) { atomic_add_int(&chk->whoTo->ref_count, 1); } TAILQ_INSERT_TAIL(&chk->asoc->asconf_send_queue, chk, sctp_next); chk->asoc->ctrl_queue_cnt++; return; } void sctp_send_asconf_ack(struct sctp_tcb *stcb) { /* * formulate and queue a asconf-ack back to sender. the asconf-ack * must be stored in the tcb. */ struct sctp_tmit_chunk *chk; struct sctp_asconf_ack *ack, *latest_ack; struct mbuf *m_ack; struct sctp_nets *net = NULL; SCTP_TCB_LOCK_ASSERT(stcb); /* Get the latest ASCONF-ACK */ latest_ack = TAILQ_LAST(&stcb->asoc.asconf_ack_sent, sctp_asconf_ackhead); if (latest_ack == NULL) { return; } if (latest_ack->last_sent_to != NULL && latest_ack->last_sent_to == stcb->asoc.last_control_chunk_from) { /* we're doing a retransmission */ net = sctp_find_alternate_net(stcb, stcb->asoc.last_control_chunk_from, 0); if (net == NULL) { /* no alternate */ if (stcb->asoc.last_control_chunk_from == NULL) { if (stcb->asoc.alternate) { net = stcb->asoc.alternate; } else { net = stcb->asoc.primary_destination; } } else { net = stcb->asoc.last_control_chunk_from; } } } else { /* normal case */ if (stcb->asoc.last_control_chunk_from == NULL) { if (stcb->asoc.alternate) { net = stcb->asoc.alternate; } else { net = stcb->asoc.primary_destination; } } else { net = stcb->asoc.last_control_chunk_from; } } latest_ack->last_sent_to = net; TAILQ_FOREACH(ack, &stcb->asoc.asconf_ack_sent, next) { if (ack->data == NULL) { continue; } /* copy the asconf_ack */ m_ack = SCTP_M_COPYM(ack->data, 0, M_COPYALL, M_NOWAIT); if (m_ack == NULL) { /* couldn't copy it */ return; } #ifdef SCTP_MBUF_LOGGING if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) { sctp_log_mbc(m_ack, SCTP_MBUF_ICOPY); } #endif sctp_alloc_a_chunk(stcb, chk); if (chk == NULL) { /* no memory */ if (m_ack) sctp_m_freem(m_ack); return; } chk->copy_by_ref = 0; chk->rec.chunk_id.id = SCTP_ASCONF_ACK; chk->rec.chunk_id.can_take_data = 1; chk->flags = CHUNK_FLAGS_FRAGMENT_OK; chk->whoTo = net; if (chk->whoTo) { atomic_add_int(&chk->whoTo->ref_count, 1); } chk->data = m_ack; chk->send_size = ack->len; chk->sent = SCTP_DATAGRAM_UNSENT; chk->snd_count = 0; chk->asoc = &stcb->asoc; TAILQ_INSERT_TAIL(&chk->asoc->control_send_queue, chk, sctp_next); chk->asoc->ctrl_queue_cnt++; } return; } static int sctp_chunk_retransmission(struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sctp_association *asoc, int *cnt_out, struct timeval *now, int *now_filled, int *fr_done, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ) { /*- * send out one MTU of retransmission. If fast_retransmit is * happening we ignore the cwnd. Otherwise we obey the cwnd and * rwnd. For a Cookie or Asconf in the control chunk queue we * retransmit them by themselves. * * For data chunks we will pick out the lowest TSN's in the sent_queue * marked for resend and bundle them all together (up to a MTU of * destination). The address to send to should have been * selected/changed where the retransmission was marked (i.e. in FR * or t3-timeout routines). */ struct sctp_tmit_chunk *data_list[SCTP_MAX_DATA_BUNDLING]; struct sctp_tmit_chunk *chk, *fwd; struct mbuf *m, *endofchain; struct sctp_nets *net = NULL; uint32_t tsns_sent = 0; int no_fragmentflg, bundle_at, cnt_thru; unsigned int mtu; int error, i, one_chunk, fwd_tsn, ctl_cnt, tmr_started; struct sctp_auth_chunk *auth = NULL; uint32_t auth_offset = 0; uint16_t auth_keyid; int override_ok = 1; int data_auth_reqd = 0; uint32_t dmtu = 0; SCTP_TCB_LOCK_ASSERT(stcb); tmr_started = ctl_cnt = bundle_at = error = 0; no_fragmentflg = 1; fwd_tsn = 0; *cnt_out = 0; fwd = NULL; endofchain = m = NULL; auth_keyid = stcb->asoc.authinfo.active_keyid; #ifdef SCTP_AUDITING_ENABLED sctp_audit_log(0xC3, 1); #endif if ((TAILQ_EMPTY(&asoc->sent_queue)) && (TAILQ_EMPTY(&asoc->control_send_queue))) { SCTPDBG(SCTP_DEBUG_OUTPUT1, "SCTP hits empty queue with cnt set to %d?\n", asoc->sent_queue_retran_cnt); asoc->sent_queue_cnt = 0; asoc->sent_queue_cnt_removeable = 0; /* send back 0/0 so we enter normal transmission */ *cnt_out = 0; return (0); } TAILQ_FOREACH(chk, &asoc->control_send_queue, sctp_next) { if ((chk->rec.chunk_id.id == SCTP_COOKIE_ECHO) || (chk->rec.chunk_id.id == SCTP_STREAM_RESET) || (chk->rec.chunk_id.id == SCTP_FORWARD_CUM_TSN)) { if (chk->sent != SCTP_DATAGRAM_RESEND) { continue; } if (chk->rec.chunk_id.id == SCTP_STREAM_RESET) { if (chk != asoc->str_reset) { /* * not eligible for retran if its * not ours */ continue; } } ctl_cnt++; if (chk->rec.chunk_id.id == SCTP_FORWARD_CUM_TSN) { fwd_tsn = 1; } /* * Add an AUTH chunk, if chunk requires it save the * offset into the chain for AUTH */ if ((auth == NULL) && (sctp_auth_is_required_chunk(chk->rec.chunk_id.id, stcb->asoc.peer_auth_chunks))) { m = sctp_add_auth_chunk(m, &endofchain, &auth, &auth_offset, stcb, chk->rec.chunk_id.id); SCTP_STAT_INCR_COUNTER64(sctps_outcontrolchunks); } m = sctp_copy_mbufchain(chk->data, m, &endofchain, 0, chk->send_size, chk->copy_by_ref); break; } } one_chunk = 0; cnt_thru = 0; /* do we have control chunks to retransmit? */ if (m != NULL) { /* Start a timer no matter if we suceed or fail */ if (chk->rec.chunk_id.id == SCTP_COOKIE_ECHO) { sctp_timer_start(SCTP_TIMER_TYPE_COOKIE, inp, stcb, chk->whoTo); } else if (chk->rec.chunk_id.id == SCTP_ASCONF) sctp_timer_start(SCTP_TIMER_TYPE_ASCONF, inp, stcb, chk->whoTo); chk->snd_count++; /* update our count */ if ((error = sctp_lowlevel_chunk_output(inp, stcb, chk->whoTo, (struct sockaddr *)&chk->whoTo->ro._l_addr, m, auth_offset, auth, stcb->asoc.authinfo.active_keyid, no_fragmentflg, 0, 0, inp->sctp_lport, stcb->rport, htonl(stcb->asoc.peer_vtag), chk->whoTo->port, NULL, 0, 0, so_locked))) { SCTP_STAT_INCR(sctps_lowlevelerr); return (error); } endofchain = NULL; auth = NULL; auth_offset = 0; /* * We don't want to mark the net->sent time here since this * we use this for HB and retrans cannot measure RTT */ /* (void)SCTP_GETTIME_TIMEVAL(&chk->whoTo->last_sent_time); */ *cnt_out += 1; chk->sent = SCTP_DATAGRAM_SENT; sctp_ucount_decr(stcb->asoc.sent_queue_retran_cnt); if (fwd_tsn == 0) { return (0); } else { /* Clean up the fwd-tsn list */ sctp_clean_up_ctl(stcb, asoc, so_locked); return (0); } } /* * Ok, it is just data retransmission we need to do or that and a * fwd-tsn with it all. */ if (TAILQ_EMPTY(&asoc->sent_queue)) { return (SCTP_RETRAN_DONE); } if ((SCTP_GET_STATE(asoc) == SCTP_STATE_COOKIE_ECHOED) || (SCTP_GET_STATE(asoc) == SCTP_STATE_COOKIE_WAIT)) { /* not yet open, resend the cookie and that is it */ return (1); } #ifdef SCTP_AUDITING_ENABLED sctp_auditing(20, inp, stcb, NULL); #endif data_auth_reqd = sctp_auth_is_required_chunk(SCTP_DATA, stcb->asoc.peer_auth_chunks); TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) { if (chk->sent != SCTP_DATAGRAM_RESEND) { /* No, not sent to this net or not ready for rtx */ continue; } if (chk->data == NULL) { SCTP_PRINTF("TSN:%x chk->snd_count:%d chk->sent:%d can't retran - no data\n", chk->rec.data.TSN_seq, chk->snd_count, chk->sent); continue; } if ((SCTP_BASE_SYSCTL(sctp_max_retran_chunk)) && (chk->snd_count >= SCTP_BASE_SYSCTL(sctp_max_retran_chunk))) { struct mbuf *op_err; char msg[SCTP_DIAG_INFO_LEN]; snprintf(msg, sizeof(msg), "TSN %8.8x retransmitted %d times, giving up", chk->rec.data.TSN_seq, chk->snd_count); op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), msg); atomic_add_int(&stcb->asoc.refcnt, 1); sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, so_locked); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); return (SCTP_RETRAN_EXIT); } /* pick up the net */ net = chk->whoTo; switch (net->ro._l_addr.sa.sa_family) { #ifdef INET case AF_INET: mtu = net->mtu - SCTP_MIN_V4_OVERHEAD; break; #endif #ifdef INET6 case AF_INET6: mtu = net->mtu - SCTP_MIN_OVERHEAD; break; #endif default: /* TSNH */ mtu = net->mtu; break; } if ((asoc->peers_rwnd < mtu) && (asoc->total_flight > 0)) { /* No room in peers rwnd */ uint32_t tsn; tsn = asoc->last_acked_seq + 1; if (tsn == chk->rec.data.TSN_seq) { /* * we make a special exception for this * case. The peer has no rwnd but is missing * the lowest chunk.. which is probably what * is holding up the rwnd. */ goto one_chunk_around; } return (1); } one_chunk_around: if (asoc->peers_rwnd < mtu) { one_chunk = 1; if ((asoc->peers_rwnd == 0) && (asoc->total_flight == 0)) { chk->window_probe = 1; chk->whoTo->window_probe = 1; } } #ifdef SCTP_AUDITING_ENABLED sctp_audit_log(0xC3, 2); #endif bundle_at = 0; m = NULL; net->fast_retran_ip = 0; if (chk->rec.data.doing_fast_retransmit == 0) { /* * if no FR in progress skip destination that have * flight_size > cwnd. */ if (net->flight_size >= net->cwnd) { continue; } } else { /* * Mark the destination net to have FR recovery * limits put on it. */ *fr_done = 1; net->fast_retran_ip = 1; } /* * if no AUTH is yet included and this chunk requires it, * make sure to account for it. We don't apply the size * until the AUTH chunk is actually added below in case * there is no room for this chunk. */ if (data_auth_reqd && (auth == NULL)) { dmtu = sctp_get_auth_chunk_len(stcb->asoc.peer_hmac_id); } else dmtu = 0; if ((chk->send_size <= (mtu - dmtu)) || (chk->flags & CHUNK_FLAGS_FRAGMENT_OK)) { /* ok we will add this one */ if (data_auth_reqd) { if (auth == NULL) { m = sctp_add_auth_chunk(m, &endofchain, &auth, &auth_offset, stcb, SCTP_DATA); auth_keyid = chk->auth_keyid; override_ok = 0; SCTP_STAT_INCR_COUNTER64(sctps_outcontrolchunks); } else if (override_ok) { auth_keyid = chk->auth_keyid; override_ok = 0; } else if (chk->auth_keyid != auth_keyid) { /* different keyid, so done bundling */ break; } } m = sctp_copy_mbufchain(chk->data, m, &endofchain, 0, chk->send_size, chk->copy_by_ref); if (m == NULL) { SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, ENOMEM); return (ENOMEM); } /* Do clear IP_DF ? */ if (chk->flags & CHUNK_FLAGS_FRAGMENT_OK) { no_fragmentflg = 0; } /* upate our MTU size */ if (mtu > (chk->send_size + dmtu)) mtu -= (chk->send_size + dmtu); else mtu = 0; data_list[bundle_at++] = chk; if (one_chunk && (asoc->total_flight <= 0)) { SCTP_STAT_INCR(sctps_windowprobed); } } if (one_chunk == 0) { /* * now are there anymore forward from chk to pick * up? */ for (fwd = TAILQ_NEXT(chk, sctp_next); fwd != NULL; fwd = TAILQ_NEXT(fwd, sctp_next)) { if (fwd->sent != SCTP_DATAGRAM_RESEND) { /* Nope, not for retran */ continue; } if (fwd->whoTo != net) { /* Nope, not the net in question */ continue; } if (data_auth_reqd && (auth == NULL)) { dmtu = sctp_get_auth_chunk_len(stcb->asoc.peer_hmac_id); } else dmtu = 0; if (fwd->send_size <= (mtu - dmtu)) { if (data_auth_reqd) { if (auth == NULL) { m = sctp_add_auth_chunk(m, &endofchain, &auth, &auth_offset, stcb, SCTP_DATA); auth_keyid = fwd->auth_keyid; override_ok = 0; SCTP_STAT_INCR_COUNTER64(sctps_outcontrolchunks); } else if (override_ok) { auth_keyid = fwd->auth_keyid; override_ok = 0; } else if (fwd->auth_keyid != auth_keyid) { /* * different keyid, * so done bundling */ break; } } m = sctp_copy_mbufchain(fwd->data, m, &endofchain, 0, fwd->send_size, fwd->copy_by_ref); if (m == NULL) { SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, ENOMEM); return (ENOMEM); } /* Do clear IP_DF ? */ if (fwd->flags & CHUNK_FLAGS_FRAGMENT_OK) { no_fragmentflg = 0; } /* upate our MTU size */ if (mtu > (fwd->send_size + dmtu)) mtu -= (fwd->send_size + dmtu); else mtu = 0; data_list[bundle_at++] = fwd; if (bundle_at >= SCTP_MAX_DATA_BUNDLING) { break; } } else { /* can't fit so we are done */ break; } } } /* Is there something to send for this destination? */ if (m) { /* * No matter if we fail/or suceed we should start a * timer. A failure is like a lost IP packet :-) */ if (!SCTP_OS_TIMER_PENDING(&net->rxt_timer.timer)) { /* * no timer running on this destination * restart it. */ sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb, net); tmr_started = 1; } /* Now lets send it, if there is anything to send :> */ if ((error = sctp_lowlevel_chunk_output(inp, stcb, net, (struct sockaddr *)&net->ro._l_addr, m, auth_offset, auth, auth_keyid, no_fragmentflg, 0, 0, inp->sctp_lport, stcb->rport, htonl(stcb->asoc.peer_vtag), net->port, NULL, 0, 0, so_locked))) { /* error, we could not output */ SCTP_STAT_INCR(sctps_lowlevelerr); return (error); } endofchain = NULL; auth = NULL; auth_offset = 0; /* For HB's */ /* * We don't want to mark the net->sent time here * since this we use this for HB and retrans cannot * measure RTT */ /* (void)SCTP_GETTIME_TIMEVAL(&net->last_sent_time); */ /* For auto-close */ cnt_thru++; if (*now_filled == 0) { (void)SCTP_GETTIME_TIMEVAL(&asoc->time_last_sent); *now = asoc->time_last_sent; *now_filled = 1; } else { asoc->time_last_sent = *now; } *cnt_out += bundle_at; #ifdef SCTP_AUDITING_ENABLED sctp_audit_log(0xC4, bundle_at); #endif if (bundle_at) { tsns_sent = data_list[0]->rec.data.TSN_seq; } for (i = 0; i < bundle_at; i++) { SCTP_STAT_INCR(sctps_sendretransdata); data_list[i]->sent = SCTP_DATAGRAM_SENT; /* * When we have a revoked data, and we * retransmit it, then we clear the revoked * flag since this flag dictates if we * subtracted from the fs */ if (data_list[i]->rec.data.chunk_was_revoked) { /* Deflate the cwnd */ data_list[i]->whoTo->cwnd -= data_list[i]->book_size; data_list[i]->rec.data.chunk_was_revoked = 0; } data_list[i]->snd_count++; sctp_ucount_decr(asoc->sent_queue_retran_cnt); /* record the time */ data_list[i]->sent_rcv_time = asoc->time_last_sent; if (data_list[i]->book_size_scale) { /* * need to double the book size on * this one */ data_list[i]->book_size_scale = 0; /* * Since we double the booksize, we * must also double the output queue * size, since this get shrunk when * we free by this amount. */ atomic_add_int(&((asoc)->total_output_queue_size), data_list[i]->book_size); data_list[i]->book_size *= 2; } else { if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOG_RWND_ENABLE) { sctp_log_rwnd(SCTP_DECREASE_PEER_RWND, asoc->peers_rwnd, data_list[i]->send_size, SCTP_BASE_SYSCTL(sctp_peer_chunk_oh)); } asoc->peers_rwnd = sctp_sbspace_sub(asoc->peers_rwnd, (uint32_t) (data_list[i]->send_size + SCTP_BASE_SYSCTL(sctp_peer_chunk_oh))); } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FLIGHT_LOGGING_ENABLE) { sctp_misc_ints(SCTP_FLIGHT_LOG_UP_RSND, data_list[i]->whoTo->flight_size, data_list[i]->book_size, (uint32_t) (uintptr_t) data_list[i]->whoTo, data_list[i]->rec.data.TSN_seq); } sctp_flight_size_increase(data_list[i]); sctp_total_flight_increase(stcb, data_list[i]); if (asoc->peers_rwnd < stcb->sctp_ep->sctp_ep.sctp_sws_sender) { /* SWS sender side engages */ asoc->peers_rwnd = 0; } if ((i == 0) && (data_list[i]->rec.data.doing_fast_retransmit)) { SCTP_STAT_INCR(sctps_sendfastretrans); if ((data_list[i] == TAILQ_FIRST(&asoc->sent_queue)) && (tmr_started == 0)) { /*- * ok we just fast-retrans'd * the lowest TSN, i.e the * first on the list. In * this case we want to give * some more time to get a * SACK back without a * t3-expiring. */ sctp_timer_stop(SCTP_TIMER_TYPE_SEND, inp, stcb, net, SCTP_FROM_SCTP_OUTPUT + SCTP_LOC_2); sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb, net); } } } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_CWND_LOGGING_ENABLE) { sctp_log_cwnd(stcb, net, tsns_sent, SCTP_CWND_LOG_FROM_RESEND); } #ifdef SCTP_AUDITING_ENABLED sctp_auditing(21, inp, stcb, NULL); #endif } else { /* None will fit */ return (1); } if (asoc->sent_queue_retran_cnt <= 0) { /* all done we have no more to retran */ asoc->sent_queue_retran_cnt = 0; break; } if (one_chunk) { /* No more room in rwnd */ return (1); } /* stop the for loop here. we sent out a packet */ break; } return (0); } static void sctp_timer_validation(struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sctp_association *asoc) { struct sctp_nets *net; /* Validate that a timer is running somewhere */ TAILQ_FOREACH(net, &asoc->nets, sctp_next) { if (SCTP_OS_TIMER_PENDING(&net->rxt_timer.timer)) { /* Here is a timer */ return; } } SCTP_TCB_LOCK_ASSERT(stcb); /* Gak, we did not have a timer somewhere */ SCTPDBG(SCTP_DEBUG_OUTPUT3, "Deadlock avoided starting timer on a dest at retran\n"); if (asoc->alternate) { sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb, asoc->alternate); } else { sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb, asoc->primary_destination); } return; } void sctp_chunk_output(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_where, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ) { /*- * Ok this is the generic chunk service queue. we must do the * following: * - See if there are retransmits pending, if so we must * do these first. * - Service the stream queue that is next, moving any * message (note I must get a complete message i.e. * FIRST/MIDDLE and LAST to the out queue in one pass) and assigning * TSN's * - Check to see if the cwnd/rwnd allows any output, if so we * go ahead and fomulate and send the low level chunks. Making sure * to combine any control in the control chunk queue also. */ struct sctp_association *asoc; struct sctp_nets *net; int error = 0, num_out, tot_out = 0, ret = 0, reason_code; unsigned int burst_cnt = 0; struct timeval now; int now_filled = 0; int nagle_on; int frag_point = sctp_get_frag_point(stcb, &stcb->asoc); int un_sent = 0; int fr_done; unsigned int tot_frs = 0; asoc = &stcb->asoc; do_it_again: /* The Nagle algorithm is only applied when handling a send call. */ if (from_where == SCTP_OUTPUT_FROM_USR_SEND) { if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NODELAY)) { nagle_on = 0; } else { nagle_on = 1; } } else { nagle_on = 0; } SCTP_TCB_LOCK_ASSERT(stcb); un_sent = (stcb->asoc.total_output_queue_size - stcb->asoc.total_flight); if ((un_sent <= 0) && (TAILQ_EMPTY(&asoc->control_send_queue)) && (TAILQ_EMPTY(&asoc->asconf_send_queue)) && (asoc->sent_queue_retran_cnt == 0) && (asoc->trigger_reset == 0)) { /* Nothing to do unless there is something to be sent left */ return; } /* * Do we have something to send, data or control AND a sack timer * running, if so piggy-back the sack. */ if (SCTP_OS_TIMER_PENDING(&stcb->asoc.dack_timer.timer)) { sctp_send_sack(stcb, so_locked); (void)SCTP_OS_TIMER_STOP(&stcb->asoc.dack_timer.timer); } while (asoc->sent_queue_retran_cnt) { /*- * Ok, it is retransmission time only, we send out only ONE * packet with a single call off to the retran code. */ if (from_where == SCTP_OUTPUT_FROM_COOKIE_ACK) { /*- * Special hook for handling cookiess discarded * by peer that carried data. Send cookie-ack only * and then the next call with get the retran's. */ (void)sctp_med_chunk_output(inp, stcb, asoc, &num_out, &reason_code, 1, from_where, &now, &now_filled, frag_point, so_locked); return; } else if (from_where != SCTP_OUTPUT_FROM_HB_TMR) { /* if its not from a HB then do it */ fr_done = 0; ret = sctp_chunk_retransmission(inp, stcb, asoc, &num_out, &now, &now_filled, &fr_done, so_locked); if (fr_done) { tot_frs++; } } else { /* * its from any other place, we don't allow retran * output (only control) */ ret = 1; } if (ret > 0) { /* Can't send anymore */ /*- * now lets push out control by calling med-level * output once. this assures that we WILL send HB's * if queued too. */ (void)sctp_med_chunk_output(inp, stcb, asoc, &num_out, &reason_code, 1, from_where, &now, &now_filled, frag_point, so_locked); #ifdef SCTP_AUDITING_ENABLED sctp_auditing(8, inp, stcb, NULL); #endif sctp_timer_validation(inp, stcb, asoc); return; } if (ret < 0) { /*- * The count was off.. retran is not happening so do * the normal retransmission. */ #ifdef SCTP_AUDITING_ENABLED sctp_auditing(9, inp, stcb, NULL); #endif if (ret == SCTP_RETRAN_EXIT) { return; } break; } if (from_where == SCTP_OUTPUT_FROM_T3) { /* Only one transmission allowed out of a timeout */ #ifdef SCTP_AUDITING_ENABLED sctp_auditing(10, inp, stcb, NULL); #endif /* Push out any control */ (void)sctp_med_chunk_output(inp, stcb, asoc, &num_out, &reason_code, 1, from_where, &now, &now_filled, frag_point, so_locked); return; } if ((asoc->fr_max_burst > 0) && (tot_frs >= asoc->fr_max_burst)) { /* Hit FR burst limit */ return; } if ((num_out == 0) && (ret == 0)) { /* No more retrans to send */ break; } } #ifdef SCTP_AUDITING_ENABLED sctp_auditing(12, inp, stcb, NULL); #endif /* Check for bad destinations, if they exist move chunks around. */ TAILQ_FOREACH(net, &asoc->nets, sctp_next) { if (!(net->dest_state & SCTP_ADDR_REACHABLE)) { /*- * if possible move things off of this address we * still may send below due to the dormant state but * we try to find an alternate address to send to * and if we have one we move all queued data on the * out wheel to this alternate address. */ if (net->ref_count > 1) sctp_move_chunks_from_net(stcb, net); } else { /*- * if ((asoc->sat_network) || (net->addr_is_local)) * { burst_limit = asoc->max_burst * * SCTP_SAT_NETWORK_BURST_INCR; } */ if (asoc->max_burst > 0) { if (SCTP_BASE_SYSCTL(sctp_use_cwnd_based_maxburst)) { if ((net->flight_size + (asoc->max_burst * net->mtu)) < net->cwnd) { /* * JRS - Use the congestion * control given in the * congestion control module */ asoc->cc_functions.sctp_cwnd_update_after_output(stcb, net, asoc->max_burst); if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOG_MAXBURST_ENABLE) { sctp_log_maxburst(stcb, net, 0, asoc->max_burst, SCTP_MAX_BURST_APPLIED); } SCTP_STAT_INCR(sctps_maxburstqueued); } net->fast_retran_ip = 0; } else { if (net->flight_size == 0) { /* * Should be decaying the * cwnd here */ ; } } } } } burst_cnt = 0; do { error = sctp_med_chunk_output(inp, stcb, asoc, &num_out, &reason_code, 0, from_where, &now, &now_filled, frag_point, so_locked); if (error) { SCTPDBG(SCTP_DEBUG_OUTPUT1, "Error %d was returned from med-c-op\n", error); if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOG_MAXBURST_ENABLE) { sctp_log_maxburst(stcb, asoc->primary_destination, error, burst_cnt, SCTP_MAX_BURST_ERROR_STOP); } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_CWND_LOGGING_ENABLE) { sctp_log_cwnd(stcb, NULL, error, SCTP_SEND_NOW_COMPLETES); sctp_log_cwnd(stcb, NULL, 0xdeadbeef, SCTP_SEND_NOW_COMPLETES); } break; } SCTPDBG(SCTP_DEBUG_OUTPUT3, "m-c-o put out %d\n", num_out); tot_out += num_out; burst_cnt++; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_CWND_LOGGING_ENABLE) { sctp_log_cwnd(stcb, NULL, num_out, SCTP_SEND_NOW_COMPLETES); if (num_out == 0) { sctp_log_cwnd(stcb, NULL, reason_code, SCTP_SEND_NOW_COMPLETES); } } if (nagle_on) { /* * When the Nagle algorithm is used, look at how * much is unsent, then if its smaller than an MTU * and we have data in flight we stop, except if we * are handling a fragmented user message. */ un_sent = ((stcb->asoc.total_output_queue_size - stcb->asoc.total_flight) + (stcb->asoc.stream_queue_cnt * sizeof(struct sctp_data_chunk))); if ((un_sent < (int)(stcb->asoc.smallest_mtu - SCTP_MIN_OVERHEAD)) && (stcb->asoc.total_flight > 0) && ((stcb->asoc.locked_on_sending == NULL) || sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR))) { break; } } if (TAILQ_EMPTY(&asoc->control_send_queue) && TAILQ_EMPTY(&asoc->send_queue) && stcb->asoc.ss_functions.sctp_ss_is_empty(stcb, asoc)) { /* Nothing left to send */ break; } if ((stcb->asoc.total_output_queue_size - stcb->asoc.total_flight) <= 0) { /* Nothing left to send */ break; } } while (num_out && ((asoc->max_burst == 0) || SCTP_BASE_SYSCTL(sctp_use_cwnd_based_maxburst) || (burst_cnt < asoc->max_burst))); if (SCTP_BASE_SYSCTL(sctp_use_cwnd_based_maxburst) == 0) { if ((asoc->max_burst > 0) && (burst_cnt >= asoc->max_burst)) { SCTP_STAT_INCR(sctps_maxburstqueued); asoc->burst_limit_applied = 1; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOG_MAXBURST_ENABLE) { sctp_log_maxburst(stcb, asoc->primary_destination, 0, burst_cnt, SCTP_MAX_BURST_APPLIED); } } else { asoc->burst_limit_applied = 0; } } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_CWND_LOGGING_ENABLE) { sctp_log_cwnd(stcb, NULL, tot_out, SCTP_SEND_NOW_COMPLETES); } SCTPDBG(SCTP_DEBUG_OUTPUT1, "Ok, we have put out %d chunks\n", tot_out); /*- * Now we need to clean up the control chunk chain if a ECNE is on * it. It must be marked as UNSENT again so next call will continue * to send it until such time that we get a CWR, to remove it. */ if (stcb->asoc.ecn_echo_cnt_onq) sctp_fix_ecn_echo(asoc); if (stcb->asoc.trigger_reset) { if (sctp_send_stream_reset_out_if_possible(stcb, so_locked) == 0) { goto do_it_again; } } return; } int sctp_output( struct sctp_inpcb *inp, struct mbuf *m, struct sockaddr *addr, struct mbuf *control, struct thread *p, int flags) { if (inp == NULL) { SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_OUTPUT, EINVAL); return (EINVAL); } if (inp->sctp_socket == NULL) { SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_OUTPUT, EINVAL); return (EINVAL); } return (sctp_sosend(inp->sctp_socket, addr, (struct uio *)NULL, m, control, flags, p )); } void send_forward_tsn(struct sctp_tcb *stcb, struct sctp_association *asoc) { struct sctp_tmit_chunk *chk; struct sctp_forward_tsn_chunk *fwdtsn; uint32_t advance_peer_ack_point; + int old; + if (asoc->idata_supported) { + old = 0; + } else { + old = 1; + } SCTP_TCB_LOCK_ASSERT(stcb); TAILQ_FOREACH(chk, &asoc->control_send_queue, sctp_next) { if (chk->rec.chunk_id.id == SCTP_FORWARD_CUM_TSN) { /* mark it to unsent */ chk->sent = SCTP_DATAGRAM_UNSENT; chk->snd_count = 0; /* Do we correct its output location? */ if (chk->whoTo) { sctp_free_remote_addr(chk->whoTo); chk->whoTo = NULL; } goto sctp_fill_in_rest; } } /* Ok if we reach here we must build one */ sctp_alloc_a_chunk(stcb, chk); if (chk == NULL) { return; } asoc->fwd_tsn_cnt++; chk->copy_by_ref = 0; + /* + * We don't do the old thing here since this is used not for on-wire + * but to tell if we are sending a fwd-tsn by the stack during + * output. And if its a IFORWARD or a FORWARD it is a fwd-tsn. + */ chk->rec.chunk_id.id = SCTP_FORWARD_CUM_TSN; chk->rec.chunk_id.can_take_data = 0; chk->flags = 0; chk->asoc = asoc; chk->whoTo = NULL; chk->data = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA); if (chk->data == NULL) { sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); return; } SCTP_BUF_RESV_UF(chk->data, SCTP_MIN_OVERHEAD); chk->sent = SCTP_DATAGRAM_UNSENT; chk->snd_count = 0; TAILQ_INSERT_TAIL(&asoc->control_send_queue, chk, sctp_next); asoc->ctrl_queue_cnt++; sctp_fill_in_rest: /*- * Here we go through and fill out the part that deals with * stream/seq of the ones we skip. */ SCTP_BUF_LEN(chk->data) = 0; { struct sctp_tmit_chunk *at, *tp1, *last; struct sctp_strseq *strseq; + struct sctp_strseq_mid *strseq_m; unsigned int cnt_of_space, i, ovh; unsigned int space_needed; unsigned int cnt_of_skipped = 0; TAILQ_FOREACH(at, &asoc->sent_queue, sctp_next) { if ((at->sent != SCTP_FORWARD_TSN_SKIP) && (at->sent != SCTP_DATAGRAM_NR_ACKED)) { /* no more to look at */ break; } if (at->rec.data.rcv_flags & SCTP_DATA_UNORDERED) { /* We don't report these */ continue; } cnt_of_skipped++; } - space_needed = (sizeof(struct sctp_forward_tsn_chunk) + - (cnt_of_skipped * sizeof(struct sctp_strseq))); - + if (old) { + space_needed = (sizeof(struct sctp_forward_tsn_chunk) + + (cnt_of_skipped * sizeof(struct sctp_strseq))); + } else { + space_needed = (sizeof(struct sctp_forward_tsn_chunk) + + (cnt_of_skipped * sizeof(struct sctp_strseq_mid))); + } cnt_of_space = (unsigned int)M_TRAILINGSPACE(chk->data); if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { ovh = SCTP_MIN_OVERHEAD; } else { ovh = SCTP_MIN_V4_OVERHEAD; } if (cnt_of_space > (asoc->smallest_mtu - ovh)) { /* trim to a mtu size */ cnt_of_space = asoc->smallest_mtu - ovh; } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOG_TRY_ADVANCE) { sctp_misc_ints(SCTP_FWD_TSN_CHECK, 0xff, 0, cnt_of_skipped, asoc->advanced_peer_ack_point); } advance_peer_ack_point = asoc->advanced_peer_ack_point; if (cnt_of_space < space_needed) { /*- * ok we must trim down the chunk by lowering the * advance peer ack point. */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOG_TRY_ADVANCE) { sctp_misc_ints(SCTP_FWD_TSN_CHECK, 0xff, 0xff, cnt_of_space, space_needed); } - cnt_of_skipped = cnt_of_space - sizeof(struct sctp_forward_tsn_chunk); - cnt_of_skipped /= sizeof(struct sctp_strseq); + if (old) { + cnt_of_skipped = cnt_of_space - sizeof(struct sctp_forward_tsn_chunk); + cnt_of_skipped /= sizeof(struct sctp_strseq); + } else { + cnt_of_skipped = cnt_of_space - sizeof(struct sctp_forward_tsn_chunk); + cnt_of_skipped /= sizeof(struct sctp_strseq_mid); + } /*- * Go through and find the TSN that will be the one * we report. */ at = TAILQ_FIRST(&asoc->sent_queue); if (at != NULL) { for (i = 0; i < cnt_of_skipped; i++) { tp1 = TAILQ_NEXT(at, sctp_next); if (tp1 == NULL) { break; } at = tp1; } } if (at && SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOG_TRY_ADVANCE) { sctp_misc_ints(SCTP_FWD_TSN_CHECK, 0xff, cnt_of_skipped, at->rec.data.TSN_seq, asoc->advanced_peer_ack_point); } last = at; /*- * last now points to last one I can report, update * peer ack point */ if (last) advance_peer_ack_point = last->rec.data.TSN_seq; - space_needed = sizeof(struct sctp_forward_tsn_chunk) + - cnt_of_skipped * sizeof(struct sctp_strseq); + if (old) { + space_needed = sizeof(struct sctp_forward_tsn_chunk) + + cnt_of_skipped * sizeof(struct sctp_strseq); + } else { + space_needed = sizeof(struct sctp_forward_tsn_chunk) + + cnt_of_skipped * sizeof(struct sctp_strseq_mid); + } } chk->send_size = space_needed; /* Setup the chunk */ fwdtsn = mtod(chk->data, struct sctp_forward_tsn_chunk *); fwdtsn->ch.chunk_length = htons(chk->send_size); fwdtsn->ch.chunk_flags = 0; - fwdtsn->ch.chunk_type = SCTP_FORWARD_CUM_TSN; + if (old) { + fwdtsn->ch.chunk_type = SCTP_FORWARD_CUM_TSN; + } else { + fwdtsn->ch.chunk_type = SCTP_IFORWARD_CUM_TSN; + } fwdtsn->new_cumulative_tsn = htonl(advance_peer_ack_point); SCTP_BUF_LEN(chk->data) = chk->send_size; fwdtsn++; /*- * Move pointer to after the fwdtsn and transfer to the * strseq pointer. */ - strseq = (struct sctp_strseq *)fwdtsn; + if (old) { + strseq = (struct sctp_strseq *)fwdtsn; + } else { + strseq_m = (struct sctp_strseq_mid *)fwdtsn; + } /*- * Now populate the strseq list. This is done blindly * without pulling out duplicate stream info. This is * inefficent but won't harm the process since the peer will * look at these in sequence and will thus release anything. * It could mean we exceed the PMTU and chop off some that * we could have included.. but this is unlikely (aka 1432/4 * would mean 300+ stream seq's would have to be reported in * one FWD-TSN. With a bit of work we can later FIX this to * optimize and pull out duplcates.. but it does add more * overhead. So for now... not! */ at = TAILQ_FIRST(&asoc->sent_queue); for (i = 0; i < cnt_of_skipped; i++) { tp1 = TAILQ_NEXT(at, sctp_next); if (tp1 == NULL) break; if (at->rec.data.rcv_flags & SCTP_DATA_UNORDERED) { /* We don't report these */ i--; at = tp1; continue; } if (at->rec.data.TSN_seq == advance_peer_ack_point) { at->rec.data.fwd_tsn_cnt = 0; } - strseq->stream = ntohs(at->rec.data.stream_number); - strseq->sequence = ntohs(at->rec.data.stream_seq); - strseq++; + if (old) { + strseq->stream = ntohs(at->rec.data.stream_number); + strseq->sequence = ntohs(at->rec.data.stream_seq); + strseq++; + } else { + strseq_m->stream = ntohs(at->rec.data.stream_number); + strseq_m->msg_id = ntohl(at->rec.data.stream_seq); + strseq_m++; + } at = tp1; } } return; } void sctp_send_sack(struct sctp_tcb *stcb, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ) { /*- * Queue up a SACK or NR-SACK in the control queue. * We must first check to see if a SACK or NR-SACK is * somehow on the control queue. * If so, we will take and and remove the old one. */ struct sctp_association *asoc; struct sctp_tmit_chunk *chk, *a_chk; struct sctp_sack_chunk *sack; struct sctp_nr_sack_chunk *nr_sack; struct sctp_gap_ack_block *gap_descriptor; const struct sack_track *selector; int mergeable = 0; int offset; caddr_t limit; uint32_t *dup; int limit_reached = 0; unsigned int i, siz, j; unsigned int num_gap_blocks = 0, num_nr_gap_blocks = 0, space; int num_dups = 0; int space_req; uint32_t highest_tsn; uint8_t flags; uint8_t type; uint8_t tsn_map; if (stcb->asoc.nrsack_supported == 1) { type = SCTP_NR_SELECTIVE_ACK; } else { type = SCTP_SELECTIVE_ACK; } a_chk = NULL; asoc = &stcb->asoc; SCTP_TCB_LOCK_ASSERT(stcb); if (asoc->last_data_chunk_from == NULL) { /* Hmm we never received anything */ return; } sctp_slide_mapping_arrays(stcb); sctp_set_rwnd(stcb, asoc); TAILQ_FOREACH(chk, &asoc->control_send_queue, sctp_next) { if (chk->rec.chunk_id.id == type) { /* Hmm, found a sack already on queue, remove it */ TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next); asoc->ctrl_queue_cnt--; a_chk = chk; if (a_chk->data) { sctp_m_freem(a_chk->data); a_chk->data = NULL; } if (a_chk->whoTo) { sctp_free_remote_addr(a_chk->whoTo); a_chk->whoTo = NULL; } break; } } if (a_chk == NULL) { sctp_alloc_a_chunk(stcb, a_chk); if (a_chk == NULL) { /* No memory so we drop the idea, and set a timer */ if (stcb->asoc.delayed_ack) { sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL, SCTP_FROM_SCTP_OUTPUT + SCTP_LOC_3); sctp_timer_start(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL); } else { stcb->asoc.send_sack = 1; } return; } a_chk->copy_by_ref = 0; a_chk->rec.chunk_id.id = type; a_chk->rec.chunk_id.can_take_data = 1; } /* Clear our pkt counts */ asoc->data_pkts_seen = 0; a_chk->flags = 0; a_chk->asoc = asoc; a_chk->snd_count = 0; a_chk->send_size = 0; /* fill in later */ a_chk->sent = SCTP_DATAGRAM_UNSENT; a_chk->whoTo = NULL; if (!(asoc->last_data_chunk_from->dest_state & SCTP_ADDR_REACHABLE)) { /*- * Ok, the destination for the SACK is unreachable, lets see if * we can select an alternate to asoc->last_data_chunk_from */ a_chk->whoTo = sctp_find_alternate_net(stcb, asoc->last_data_chunk_from, 0); if (a_chk->whoTo == NULL) { /* Nope, no alternate */ a_chk->whoTo = asoc->last_data_chunk_from; } } else { a_chk->whoTo = asoc->last_data_chunk_from; } if (a_chk->whoTo) { atomic_add_int(&a_chk->whoTo->ref_count, 1); } if (SCTP_TSN_GT(asoc->highest_tsn_inside_map, asoc->highest_tsn_inside_nr_map)) { highest_tsn = asoc->highest_tsn_inside_map; } else { highest_tsn = asoc->highest_tsn_inside_nr_map; } if (highest_tsn == asoc->cumulative_tsn) { /* no gaps */ if (type == SCTP_SELECTIVE_ACK) { space_req = sizeof(struct sctp_sack_chunk); } else { space_req = sizeof(struct sctp_nr_sack_chunk); } } else { /* gaps get a cluster */ space_req = MCLBYTES; } /* Ok now lets formulate a MBUF with our sack */ a_chk->data = sctp_get_mbuf_for_msg(space_req, 0, M_NOWAIT, 1, MT_DATA); if ((a_chk->data == NULL) || (a_chk->whoTo == NULL)) { /* rats, no mbuf memory */ if (a_chk->data) { /* was a problem with the destination */ sctp_m_freem(a_chk->data); a_chk->data = NULL; } sctp_free_a_chunk(stcb, a_chk, so_locked); /* sa_ignore NO_NULL_CHK */ if (stcb->asoc.delayed_ack) { sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL, SCTP_FROM_SCTP_OUTPUT + SCTP_LOC_4); sctp_timer_start(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL); } else { stcb->asoc.send_sack = 1; } return; } /* ok, lets go through and fill it in */ SCTP_BUF_RESV_UF(a_chk->data, SCTP_MIN_OVERHEAD); space = (unsigned int)M_TRAILINGSPACE(a_chk->data); if (space > (a_chk->whoTo->mtu - SCTP_MIN_OVERHEAD)) { space = (a_chk->whoTo->mtu - SCTP_MIN_OVERHEAD); } limit = mtod(a_chk->data, caddr_t); limit += space; flags = 0; if ((asoc->sctp_cmt_on_off > 0) && SCTP_BASE_SYSCTL(sctp_cmt_use_dac)) { /*- * CMT DAC algorithm: If 2 (i.e., 0x10) packets have been * received, then set high bit to 1, else 0. Reset * pkts_rcvd. */ flags |= (asoc->cmt_dac_pkts_rcvd << 6); asoc->cmt_dac_pkts_rcvd = 0; } #ifdef SCTP_ASOCLOG_OF_TSNS stcb->asoc.cumack_logsnt[stcb->asoc.cumack_log_atsnt] = asoc->cumulative_tsn; stcb->asoc.cumack_log_atsnt++; if (stcb->asoc.cumack_log_atsnt >= SCTP_TSN_LOG_SIZE) { stcb->asoc.cumack_log_atsnt = 0; } #endif /* reset the readers interpretation */ stcb->freed_by_sorcv_sincelast = 0; if (type == SCTP_SELECTIVE_ACK) { sack = mtod(a_chk->data, struct sctp_sack_chunk *); nr_sack = NULL; gap_descriptor = (struct sctp_gap_ack_block *)((caddr_t)sack + sizeof(struct sctp_sack_chunk)); if (highest_tsn > asoc->mapping_array_base_tsn) { siz = (((highest_tsn - asoc->mapping_array_base_tsn) + 1) + 7) / 8; } else { siz = (((MAX_TSN - highest_tsn) + 1) + highest_tsn + 7) / 8; } } else { sack = NULL; nr_sack = mtod(a_chk->data, struct sctp_nr_sack_chunk *); gap_descriptor = (struct sctp_gap_ack_block *)((caddr_t)nr_sack + sizeof(struct sctp_nr_sack_chunk)); if (asoc->highest_tsn_inside_map > asoc->mapping_array_base_tsn) { siz = (((asoc->highest_tsn_inside_map - asoc->mapping_array_base_tsn) + 1) + 7) / 8; } else { siz = (((MAX_TSN - asoc->mapping_array_base_tsn) + 1) + asoc->highest_tsn_inside_map + 7) / 8; } } if (SCTP_TSN_GT(asoc->mapping_array_base_tsn, asoc->cumulative_tsn)) { offset = 1; } else { offset = asoc->mapping_array_base_tsn - asoc->cumulative_tsn; } if (((type == SCTP_SELECTIVE_ACK) && SCTP_TSN_GT(highest_tsn, asoc->cumulative_tsn)) || ((type == SCTP_NR_SELECTIVE_ACK) && SCTP_TSN_GT(asoc->highest_tsn_inside_map, asoc->cumulative_tsn))) { /* we have a gap .. maybe */ for (i = 0; i < siz; i++) { tsn_map = asoc->mapping_array[i]; if (type == SCTP_SELECTIVE_ACK) { tsn_map |= asoc->nr_mapping_array[i]; } if (i == 0) { /* * Clear all bits corresponding to TSNs * smaller or equal to the cumulative TSN. */ tsn_map &= (~0U << (1 - offset)); } selector = &sack_array[tsn_map]; if (mergeable && selector->right_edge) { /* * Backup, left and right edges were ok to * merge. */ num_gap_blocks--; gap_descriptor--; } if (selector->num_entries == 0) mergeable = 0; else { for (j = 0; j < selector->num_entries; j++) { if (mergeable && selector->right_edge) { /* * do a merge by NOT setting * the left side */ mergeable = 0; } else { /* * no merge, set the left * side */ mergeable = 0; gap_descriptor->start = htons((selector->gaps[j].start + offset)); } gap_descriptor->end = htons((selector->gaps[j].end + offset)); num_gap_blocks++; gap_descriptor++; if (((caddr_t)gap_descriptor + sizeof(struct sctp_gap_ack_block)) > limit) { /* no more room */ limit_reached = 1; break; } } if (selector->left_edge) { mergeable = 1; } } if (limit_reached) { /* Reached the limit stop */ break; } offset += 8; } } if ((type == SCTP_NR_SELECTIVE_ACK) && (limit_reached == 0)) { mergeable = 0; if (asoc->highest_tsn_inside_nr_map > asoc->mapping_array_base_tsn) { siz = (((asoc->highest_tsn_inside_nr_map - asoc->mapping_array_base_tsn) + 1) + 7) / 8; } else { siz = (((MAX_TSN - asoc->mapping_array_base_tsn) + 1) + asoc->highest_tsn_inside_nr_map + 7) / 8; } if (SCTP_TSN_GT(asoc->mapping_array_base_tsn, asoc->cumulative_tsn)) { offset = 1; } else { offset = asoc->mapping_array_base_tsn - asoc->cumulative_tsn; } if (SCTP_TSN_GT(asoc->highest_tsn_inside_nr_map, asoc->cumulative_tsn)) { /* we have a gap .. maybe */ for (i = 0; i < siz; i++) { tsn_map = asoc->nr_mapping_array[i]; if (i == 0) { /* * Clear all bits corresponding to * TSNs smaller or equal to the * cumulative TSN. */ tsn_map &= (~0U << (1 - offset)); } selector = &sack_array[tsn_map]; if (mergeable && selector->right_edge) { /* * Backup, left and right edges were * ok to merge. */ num_nr_gap_blocks--; gap_descriptor--; } if (selector->num_entries == 0) mergeable = 0; else { for (j = 0; j < selector->num_entries; j++) { if (mergeable && selector->right_edge) { /* * do a merge by NOT * setting the left * side */ mergeable = 0; } else { /* * no merge, set the * left side */ mergeable = 0; gap_descriptor->start = htons((selector->gaps[j].start + offset)); } gap_descriptor->end = htons((selector->gaps[j].end + offset)); num_nr_gap_blocks++; gap_descriptor++; if (((caddr_t)gap_descriptor + sizeof(struct sctp_gap_ack_block)) > limit) { /* no more room */ limit_reached = 1; break; } } if (selector->left_edge) { mergeable = 1; } } if (limit_reached) { /* Reached the limit stop */ break; } offset += 8; } } } /* now we must add any dups we are going to report. */ if ((limit_reached == 0) && (asoc->numduptsns)) { dup = (uint32_t *) gap_descriptor; for (i = 0; i < asoc->numduptsns; i++) { *dup = htonl(asoc->dup_tsns[i]); dup++; num_dups++; if (((caddr_t)dup + sizeof(uint32_t)) > limit) { /* no more room */ break; } } asoc->numduptsns = 0; } /* * now that the chunk is prepared queue it to the control chunk * queue. */ if (type == SCTP_SELECTIVE_ACK) { a_chk->send_size = (uint16_t) (sizeof(struct sctp_sack_chunk) + (num_gap_blocks + num_nr_gap_blocks) * sizeof(struct sctp_gap_ack_block) + num_dups * sizeof(int32_t)); SCTP_BUF_LEN(a_chk->data) = a_chk->send_size; sack->sack.cum_tsn_ack = htonl(asoc->cumulative_tsn); sack->sack.a_rwnd = htonl(asoc->my_rwnd); sack->sack.num_gap_ack_blks = htons(num_gap_blocks); sack->sack.num_dup_tsns = htons(num_dups); sack->ch.chunk_type = type; sack->ch.chunk_flags = flags; sack->ch.chunk_length = htons(a_chk->send_size); } else { a_chk->send_size = (uint16_t) (sizeof(struct sctp_nr_sack_chunk) + (num_gap_blocks + num_nr_gap_blocks) * sizeof(struct sctp_gap_ack_block) + num_dups * sizeof(int32_t)); SCTP_BUF_LEN(a_chk->data) = a_chk->send_size; nr_sack->nr_sack.cum_tsn_ack = htonl(asoc->cumulative_tsn); nr_sack->nr_sack.a_rwnd = htonl(asoc->my_rwnd); nr_sack->nr_sack.num_gap_ack_blks = htons(num_gap_blocks); nr_sack->nr_sack.num_nr_gap_ack_blks = htons(num_nr_gap_blocks); nr_sack->nr_sack.num_dup_tsns = htons(num_dups); nr_sack->nr_sack.reserved = 0; nr_sack->ch.chunk_type = type; nr_sack->ch.chunk_flags = flags; nr_sack->ch.chunk_length = htons(a_chk->send_size); } TAILQ_INSERT_TAIL(&asoc->control_send_queue, a_chk, sctp_next); asoc->my_last_reported_rwnd = asoc->my_rwnd; asoc->ctrl_queue_cnt++; asoc->send_sack = 0; SCTP_STAT_INCR(sctps_sendsacks); return; } void sctp_send_abort_tcb(struct sctp_tcb *stcb, struct mbuf *operr, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ) { struct mbuf *m_abort, *m, *m_last; struct mbuf *m_out, *m_end = NULL; struct sctp_abort_chunk *abort; struct sctp_auth_chunk *auth = NULL; struct sctp_nets *net; uint32_t vtag; uint32_t auth_offset = 0; uint16_t cause_len, chunk_len, padding_len; SCTP_TCB_LOCK_ASSERT(stcb); /*- * Add an AUTH chunk, if chunk requires it and save the offset into * the chain for AUTH */ if (sctp_auth_is_required_chunk(SCTP_ABORT_ASSOCIATION, stcb->asoc.peer_auth_chunks)) { m_out = sctp_add_auth_chunk(NULL, &m_end, &auth, &auth_offset, stcb, SCTP_ABORT_ASSOCIATION); SCTP_STAT_INCR_COUNTER64(sctps_outcontrolchunks); } else { m_out = NULL; } m_abort = sctp_get_mbuf_for_msg(sizeof(struct sctp_abort_chunk), 0, M_NOWAIT, 1, MT_HEADER); if (m_abort == NULL) { if (m_out) { sctp_m_freem(m_out); } if (operr) { sctp_m_freem(operr); } return; } /* link in any error */ SCTP_BUF_NEXT(m_abort) = operr; cause_len = 0; m_last = NULL; for (m = operr; m; m = SCTP_BUF_NEXT(m)) { cause_len += (uint16_t) SCTP_BUF_LEN(m); if (SCTP_BUF_NEXT(m) == NULL) { m_last = m; } } SCTP_BUF_LEN(m_abort) = sizeof(struct sctp_abort_chunk); chunk_len = (uint16_t) sizeof(struct sctp_abort_chunk) + cause_len; padding_len = SCTP_SIZE32(chunk_len) - chunk_len; if (m_out == NULL) { /* NO Auth chunk prepended, so reserve space in front */ SCTP_BUF_RESV_UF(m_abort, SCTP_MIN_OVERHEAD); m_out = m_abort; } else { /* Put AUTH chunk at the front of the chain */ SCTP_BUF_NEXT(m_end) = m_abort; } if (stcb->asoc.alternate) { net = stcb->asoc.alternate; } else { net = stcb->asoc.primary_destination; } /* Fill in the ABORT chunk header. */ abort = mtod(m_abort, struct sctp_abort_chunk *); abort->ch.chunk_type = SCTP_ABORT_ASSOCIATION; if (stcb->asoc.peer_vtag == 0) { /* This happens iff the assoc is in COOKIE-WAIT state. */ vtag = stcb->asoc.my_vtag; abort->ch.chunk_flags = SCTP_HAD_NO_TCB; } else { vtag = stcb->asoc.peer_vtag; abort->ch.chunk_flags = 0; } abort->ch.chunk_length = htons(chunk_len); /* Add padding, if necessary. */ if (padding_len > 0) { if ((m_last == NULL) || (sctp_add_pad_tombuf(m_last, padding_len) == NULL)) { sctp_m_freem(m_out); return; } } (void)sctp_lowlevel_chunk_output(stcb->sctp_ep, stcb, net, (struct sockaddr *)&net->ro._l_addr, m_out, auth_offset, auth, stcb->asoc.authinfo.active_keyid, 1, 0, 0, stcb->sctp_ep->sctp_lport, stcb->rport, htonl(vtag), stcb->asoc.primary_destination->port, NULL, 0, 0, so_locked); SCTP_STAT_INCR_COUNTER64(sctps_outcontrolchunks); } void sctp_send_shutdown_complete(struct sctp_tcb *stcb, struct sctp_nets *net, int reflect_vtag) { /* formulate and SEND a SHUTDOWN-COMPLETE */ struct mbuf *m_shutdown_comp; struct sctp_shutdown_complete_chunk *shutdown_complete; uint32_t vtag; uint8_t flags; m_shutdown_comp = sctp_get_mbuf_for_msg(sizeof(struct sctp_chunkhdr), 0, M_NOWAIT, 1, MT_HEADER); if (m_shutdown_comp == NULL) { /* no mbuf's */ return; } if (reflect_vtag) { flags = SCTP_HAD_NO_TCB; vtag = stcb->asoc.my_vtag; } else { flags = 0; vtag = stcb->asoc.peer_vtag; } shutdown_complete = mtod(m_shutdown_comp, struct sctp_shutdown_complete_chunk *); shutdown_complete->ch.chunk_type = SCTP_SHUTDOWN_COMPLETE; shutdown_complete->ch.chunk_flags = flags; shutdown_complete->ch.chunk_length = htons(sizeof(struct sctp_shutdown_complete_chunk)); SCTP_BUF_LEN(m_shutdown_comp) = sizeof(struct sctp_shutdown_complete_chunk); (void)sctp_lowlevel_chunk_output(stcb->sctp_ep, stcb, net, (struct sockaddr *)&net->ro._l_addr, m_shutdown_comp, 0, NULL, 0, 1, 0, 0, stcb->sctp_ep->sctp_lport, stcb->rport, htonl(vtag), net->port, NULL, 0, 0, SCTP_SO_NOT_LOCKED); SCTP_STAT_INCR_COUNTER64(sctps_outcontrolchunks); return; } static void sctp_send_resp_msg(struct sockaddr *src, struct sockaddr *dst, struct sctphdr *sh, uint32_t vtag, uint8_t type, struct mbuf *cause, uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum, uint32_t vrf_id, uint16_t port) { struct mbuf *o_pak; struct mbuf *mout; struct sctphdr *shout; struct sctp_chunkhdr *ch; #if defined(INET) || defined(INET6) struct udphdr *udp; int ret; #endif int len, cause_len, padding_len; #ifdef INET struct sockaddr_in *src_sin, *dst_sin; struct ip *ip; #endif #ifdef INET6 struct sockaddr_in6 *src_sin6, *dst_sin6; struct ip6_hdr *ip6; #endif /* Compute the length of the cause and add final padding. */ cause_len = 0; if (cause != NULL) { struct mbuf *m_at, *m_last = NULL; for (m_at = cause; m_at; m_at = SCTP_BUF_NEXT(m_at)) { if (SCTP_BUF_NEXT(m_at) == NULL) m_last = m_at; cause_len += SCTP_BUF_LEN(m_at); } padding_len = cause_len % 4; if (padding_len != 0) { padding_len = 4 - padding_len; } if (padding_len != 0) { if (sctp_add_pad_tombuf(m_last, padding_len) == NULL) { sctp_m_freem(cause); return; } } } else { padding_len = 0; } /* Get an mbuf for the header. */ len = sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr); switch (dst->sa_family) { #ifdef INET case AF_INET: len += sizeof(struct ip); break; #endif #ifdef INET6 case AF_INET6: len += sizeof(struct ip6_hdr); break; #endif default: break; } #if defined(INET) || defined(INET6) if (port) { len += sizeof(struct udphdr); } #endif mout = sctp_get_mbuf_for_msg(len + max_linkhdr, 1, M_NOWAIT, 1, MT_DATA); if (mout == NULL) { if (cause) { sctp_m_freem(cause); } return; } SCTP_BUF_RESV_UF(mout, max_linkhdr); SCTP_BUF_LEN(mout) = len; SCTP_BUF_NEXT(mout) = cause; M_SETFIB(mout, fibnum); mout->m_pkthdr.flowid = mflowid; M_HASHTYPE_SET(mout, mflowtype); #ifdef INET ip = NULL; #endif #ifdef INET6 ip6 = NULL; #endif switch (dst->sa_family) { #ifdef INET case AF_INET: src_sin = (struct sockaddr_in *)src; dst_sin = (struct sockaddr_in *)dst; ip = mtod(mout, struct ip *); ip->ip_v = IPVERSION; ip->ip_hl = (sizeof(struct ip) >> 2); ip->ip_tos = 0; ip->ip_off = 0; ip_fillid(ip); ip->ip_ttl = MODULE_GLOBAL(ip_defttl); if (port) { ip->ip_p = IPPROTO_UDP; } else { ip->ip_p = IPPROTO_SCTP; } ip->ip_src.s_addr = dst_sin->sin_addr.s_addr; ip->ip_dst.s_addr = src_sin->sin_addr.s_addr; ip->ip_sum = 0; len = sizeof(struct ip); shout = (struct sctphdr *)((caddr_t)ip + len); break; #endif #ifdef INET6 case AF_INET6: src_sin6 = (struct sockaddr_in6 *)src; dst_sin6 = (struct sockaddr_in6 *)dst; ip6 = mtod(mout, struct ip6_hdr *); ip6->ip6_flow = htonl(0x60000000); if (V_ip6_auto_flowlabel) { ip6->ip6_flow |= (htonl(ip6_randomflowlabel()) & IPV6_FLOWLABEL_MASK); } ip6->ip6_hlim = MODULE_GLOBAL(ip6_defhlim); if (port) { ip6->ip6_nxt = IPPROTO_UDP; } else { ip6->ip6_nxt = IPPROTO_SCTP; } ip6->ip6_src = dst_sin6->sin6_addr; ip6->ip6_dst = src_sin6->sin6_addr; len = sizeof(struct ip6_hdr); shout = (struct sctphdr *)((caddr_t)ip6 + len); break; #endif default: len = 0; shout = mtod(mout, struct sctphdr *); break; } #if defined(INET) || defined(INET6) if (port) { if (htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)) == 0) { sctp_m_freem(mout); return; } udp = (struct udphdr *)shout; udp->uh_sport = htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)); udp->uh_dport = port; udp->uh_sum = 0; udp->uh_ulen = htons((uint16_t) (sizeof(struct udphdr) + sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr) + cause_len + padding_len)); len += sizeof(struct udphdr); shout = (struct sctphdr *)((caddr_t)shout + sizeof(struct udphdr)); } else { udp = NULL; } #endif shout->src_port = sh->dest_port; shout->dest_port = sh->src_port; shout->checksum = 0; if (vtag) { shout->v_tag = htonl(vtag); } else { shout->v_tag = sh->v_tag; } len += sizeof(struct sctphdr); ch = (struct sctp_chunkhdr *)((caddr_t)shout + sizeof(struct sctphdr)); ch->chunk_type = type; if (vtag) { ch->chunk_flags = 0; } else { ch->chunk_flags = SCTP_HAD_NO_TCB; } ch->chunk_length = htons((uint16_t) (sizeof(struct sctp_chunkhdr) + cause_len)); len += sizeof(struct sctp_chunkhdr); len += cause_len + padding_len; if (SCTP_GET_HEADER_FOR_OUTPUT(o_pak)) { sctp_m_freem(mout); return; } SCTP_ATTACH_CHAIN(o_pak, mout, len); switch (dst->sa_family) { #ifdef INET case AF_INET: if (port) { if (V_udp_cksum) { udp->uh_sum = in_pseudo(ip->ip_src.s_addr, ip->ip_dst.s_addr, udp->uh_ulen + htons(IPPROTO_UDP)); } else { udp->uh_sum = 0; } } ip->ip_len = htons(len); if (port) { #if defined(SCTP_WITH_NO_CSUM) SCTP_STAT_INCR(sctps_sendnocrc); #else shout->checksum = sctp_calculate_cksum(mout, sizeof(struct ip) + sizeof(struct udphdr)); SCTP_STAT_INCR(sctps_sendswcrc); #endif if (V_udp_cksum) { SCTP_ENABLE_UDP_CSUM(o_pak); } } else { #if defined(SCTP_WITH_NO_CSUM) SCTP_STAT_INCR(sctps_sendnocrc); #else mout->m_pkthdr.csum_flags = CSUM_SCTP; mout->m_pkthdr.csum_data = offsetof(struct sctphdr, checksum); SCTP_STAT_INCR(sctps_sendhwcrc); #endif } #ifdef SCTP_PACKET_LOGGING if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LAST_PACKET_TRACING) { sctp_packet_log(o_pak); } #endif SCTP_IP_OUTPUT(ret, o_pak, NULL, NULL, vrf_id); break; #endif #ifdef INET6 case AF_INET6: ip6->ip6_plen = (uint16_t) (len - sizeof(struct ip6_hdr)); if (port) { #if defined(SCTP_WITH_NO_CSUM) SCTP_STAT_INCR(sctps_sendnocrc); #else shout->checksum = sctp_calculate_cksum(mout, sizeof(struct ip6_hdr) + sizeof(struct udphdr)); SCTP_STAT_INCR(sctps_sendswcrc); #endif if ((udp->uh_sum = in6_cksum(o_pak, IPPROTO_UDP, sizeof(struct ip6_hdr), len - sizeof(struct ip6_hdr))) == 0) { udp->uh_sum = 0xffff; } } else { #if defined(SCTP_WITH_NO_CSUM) SCTP_STAT_INCR(sctps_sendnocrc); #else mout->m_pkthdr.csum_flags = CSUM_SCTP_IPV6; mout->m_pkthdr.csum_data = offsetof(struct sctphdr, checksum); SCTP_STAT_INCR(sctps_sendhwcrc); #endif } #ifdef SCTP_PACKET_LOGGING if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LAST_PACKET_TRACING) { sctp_packet_log(o_pak); } #endif SCTP_IP6_OUTPUT(ret, o_pak, NULL, NULL, NULL, vrf_id); break; #endif default: SCTPDBG(SCTP_DEBUG_OUTPUT1, "Unknown protocol (TSNH) type %d\n", dst->sa_family); sctp_m_freem(mout); SCTP_LTRACE_ERR_RET_PKT(mout, NULL, NULL, NULL, SCTP_FROM_SCTP_OUTPUT, EFAULT); return; } SCTP_STAT_INCR(sctps_sendpackets); SCTP_STAT_INCR_COUNTER64(sctps_outpackets); SCTP_STAT_INCR_COUNTER64(sctps_outcontrolchunks); return; } void sctp_send_shutdown_complete2(struct sockaddr *src, struct sockaddr *dst, struct sctphdr *sh, uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum, uint32_t vrf_id, uint16_t port) { sctp_send_resp_msg(src, dst, sh, 0, SCTP_SHUTDOWN_COMPLETE, NULL, mflowtype, mflowid, fibnum, vrf_id, port); } void sctp_send_hb(struct sctp_tcb *stcb, struct sctp_nets *net, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ) { struct sctp_tmit_chunk *chk; struct sctp_heartbeat_chunk *hb; struct timeval now; SCTP_TCB_LOCK_ASSERT(stcb); if (net == NULL) { return; } (void)SCTP_GETTIME_TIMEVAL(&now); switch (net->ro._l_addr.sa.sa_family) { #ifdef INET case AF_INET: break; #endif #ifdef INET6 case AF_INET6: break; #endif default: return; } sctp_alloc_a_chunk(stcb, chk); if (chk == NULL) { SCTPDBG(SCTP_DEBUG_OUTPUT4, "Gak, can't get a chunk for hb\n"); return; } chk->copy_by_ref = 0; chk->rec.chunk_id.id = SCTP_HEARTBEAT_REQUEST; chk->rec.chunk_id.can_take_data = 1; chk->flags = 0; chk->asoc = &stcb->asoc; chk->send_size = sizeof(struct sctp_heartbeat_chunk); chk->data = sctp_get_mbuf_for_msg(chk->send_size, 0, M_NOWAIT, 1, MT_HEADER); if (chk->data == NULL) { sctp_free_a_chunk(stcb, chk, so_locked); return; } SCTP_BUF_RESV_UF(chk->data, SCTP_MIN_OVERHEAD); SCTP_BUF_LEN(chk->data) = chk->send_size; chk->sent = SCTP_DATAGRAM_UNSENT; chk->snd_count = 0; chk->whoTo = net; atomic_add_int(&chk->whoTo->ref_count, 1); /* Now we have a mbuf that we can fill in with the details */ hb = mtod(chk->data, struct sctp_heartbeat_chunk *); memset(hb, 0, sizeof(struct sctp_heartbeat_chunk)); /* fill out chunk header */ hb->ch.chunk_type = SCTP_HEARTBEAT_REQUEST; hb->ch.chunk_flags = 0; hb->ch.chunk_length = htons(chk->send_size); /* Fill out hb parameter */ hb->heartbeat.hb_info.ph.param_type = htons(SCTP_HEARTBEAT_INFO); hb->heartbeat.hb_info.ph.param_length = htons(sizeof(struct sctp_heartbeat_info_param)); hb->heartbeat.hb_info.time_value_1 = now.tv_sec; hb->heartbeat.hb_info.time_value_2 = now.tv_usec; /* Did our user request this one, put it in */ hb->heartbeat.hb_info.addr_family = (uint8_t) net->ro._l_addr.sa.sa_family; hb->heartbeat.hb_info.addr_len = net->ro._l_addr.sa.sa_len; if (net->dest_state & SCTP_ADDR_UNCONFIRMED) { /* * we only take from the entropy pool if the address is not * confirmed. */ net->heartbeat_random1 = hb->heartbeat.hb_info.random_value1 = sctp_select_initial_TSN(&stcb->sctp_ep->sctp_ep); net->heartbeat_random2 = hb->heartbeat.hb_info.random_value2 = sctp_select_initial_TSN(&stcb->sctp_ep->sctp_ep); } else { net->heartbeat_random1 = hb->heartbeat.hb_info.random_value1 = 0; net->heartbeat_random2 = hb->heartbeat.hb_info.random_value2 = 0; } switch (net->ro._l_addr.sa.sa_family) { #ifdef INET case AF_INET: memcpy(hb->heartbeat.hb_info.address, &net->ro._l_addr.sin.sin_addr, sizeof(net->ro._l_addr.sin.sin_addr)); break; #endif #ifdef INET6 case AF_INET6: memcpy(hb->heartbeat.hb_info.address, &net->ro._l_addr.sin6.sin6_addr, sizeof(net->ro._l_addr.sin6.sin6_addr)); break; #endif default: if (chk->data) { sctp_m_freem(chk->data); chk->data = NULL; } sctp_free_a_chunk(stcb, chk, so_locked); return; break; } net->hb_responded = 0; TAILQ_INSERT_TAIL(&stcb->asoc.control_send_queue, chk, sctp_next); stcb->asoc.ctrl_queue_cnt++; SCTP_STAT_INCR(sctps_sendheartbeat); return; } void sctp_send_ecn_echo(struct sctp_tcb *stcb, struct sctp_nets *net, uint32_t high_tsn) { struct sctp_association *asoc; struct sctp_ecne_chunk *ecne; struct sctp_tmit_chunk *chk; if (net == NULL) { return; } asoc = &stcb->asoc; SCTP_TCB_LOCK_ASSERT(stcb); TAILQ_FOREACH(chk, &asoc->control_send_queue, sctp_next) { if ((chk->rec.chunk_id.id == SCTP_ECN_ECHO) && (net == chk->whoTo)) { /* found a previous ECN_ECHO update it if needed */ uint32_t cnt, ctsn; ecne = mtod(chk->data, struct sctp_ecne_chunk *); ctsn = ntohl(ecne->tsn); if (SCTP_TSN_GT(high_tsn, ctsn)) { ecne->tsn = htonl(high_tsn); SCTP_STAT_INCR(sctps_queue_upd_ecne); } cnt = ntohl(ecne->num_pkts_since_cwr); cnt++; ecne->num_pkts_since_cwr = htonl(cnt); return; } } /* nope could not find one to update so we must build one */ sctp_alloc_a_chunk(stcb, chk); if (chk == NULL) { return; } SCTP_STAT_INCR(sctps_queue_upd_ecne); chk->copy_by_ref = 0; chk->rec.chunk_id.id = SCTP_ECN_ECHO; chk->rec.chunk_id.can_take_data = 0; chk->flags = 0; chk->asoc = &stcb->asoc; chk->send_size = sizeof(struct sctp_ecne_chunk); chk->data = sctp_get_mbuf_for_msg(chk->send_size, 0, M_NOWAIT, 1, MT_HEADER); if (chk->data == NULL) { sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); return; } SCTP_BUF_RESV_UF(chk->data, SCTP_MIN_OVERHEAD); SCTP_BUF_LEN(chk->data) = chk->send_size; chk->sent = SCTP_DATAGRAM_UNSENT; chk->snd_count = 0; chk->whoTo = net; atomic_add_int(&chk->whoTo->ref_count, 1); stcb->asoc.ecn_echo_cnt_onq++; ecne = mtod(chk->data, struct sctp_ecne_chunk *); ecne->ch.chunk_type = SCTP_ECN_ECHO; ecne->ch.chunk_flags = 0; ecne->ch.chunk_length = htons(sizeof(struct sctp_ecne_chunk)); ecne->tsn = htonl(high_tsn); ecne->num_pkts_since_cwr = htonl(1); TAILQ_INSERT_HEAD(&stcb->asoc.control_send_queue, chk, sctp_next); asoc->ctrl_queue_cnt++; } void sctp_send_packet_dropped(struct sctp_tcb *stcb, struct sctp_nets *net, struct mbuf *m, int len, int iphlen, int bad_crc) { struct sctp_association *asoc; struct sctp_pktdrop_chunk *drp; struct sctp_tmit_chunk *chk; uint8_t *datap; int was_trunc = 0; int fullsz = 0; long spc; int offset; struct sctp_chunkhdr *ch, chunk_buf; unsigned int chk_length; if (!stcb) { return; } asoc = &stcb->asoc; SCTP_TCB_LOCK_ASSERT(stcb); if (asoc->pktdrop_supported == 0) { /*- * peer must declare support before I send one. */ return; } if (stcb->sctp_socket == NULL) { return; } sctp_alloc_a_chunk(stcb, chk); if (chk == NULL) { return; } chk->copy_by_ref = 0; chk->rec.chunk_id.id = SCTP_PACKET_DROPPED; chk->rec.chunk_id.can_take_data = 1; chk->flags = 0; len -= iphlen; chk->send_size = len; /* Validate that we do not have an ABORT in here. */ offset = iphlen + sizeof(struct sctphdr); ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch), (uint8_t *) & chunk_buf); while (ch != NULL) { chk_length = ntohs(ch->chunk_length); if (chk_length < sizeof(*ch)) { /* break to abort land */ break; } switch (ch->chunk_type) { case SCTP_PACKET_DROPPED: case SCTP_ABORT_ASSOCIATION: case SCTP_INITIATION_ACK: /** * We don't respond with an PKT-DROP to an ABORT * or PKT-DROP. We also do not respond to an * INIT-ACK, because we can't know if the initiation * tag is correct or not. */ sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); return; default: break; } offset += SCTP_SIZE32(chk_length); ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch), (uint8_t *) & chunk_buf); } if ((len + SCTP_MAX_OVERHEAD + sizeof(struct sctp_pktdrop_chunk)) > min(stcb->asoc.smallest_mtu, MCLBYTES)) { /* * only send 1 mtu worth, trim off the excess on the end. */ fullsz = len; len = min(stcb->asoc.smallest_mtu, MCLBYTES) - SCTP_MAX_OVERHEAD; was_trunc = 1; } chk->asoc = &stcb->asoc; chk->data = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA); if (chk->data == NULL) { jump_out: sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); return; } SCTP_BUF_RESV_UF(chk->data, SCTP_MIN_OVERHEAD); drp = mtod(chk->data, struct sctp_pktdrop_chunk *); if (drp == NULL) { sctp_m_freem(chk->data); chk->data = NULL; goto jump_out; } chk->book_size = SCTP_SIZE32((chk->send_size + sizeof(struct sctp_pktdrop_chunk) + sizeof(struct sctphdr) + SCTP_MED_OVERHEAD)); chk->book_size_scale = 0; if (was_trunc) { drp->ch.chunk_flags = SCTP_PACKET_TRUNCATED; drp->trunc_len = htons(fullsz); /* * Len is already adjusted to size minus overhead above take * out the pkt_drop chunk itself from it. */ chk->send_size = (uint16_t) (len - sizeof(struct sctp_pktdrop_chunk)); len = chk->send_size; } else { /* no truncation needed */ drp->ch.chunk_flags = 0; drp->trunc_len = htons(0); } if (bad_crc) { drp->ch.chunk_flags |= SCTP_BADCRC; } chk->send_size += sizeof(struct sctp_pktdrop_chunk); SCTP_BUF_LEN(chk->data) = chk->send_size; chk->sent = SCTP_DATAGRAM_UNSENT; chk->snd_count = 0; if (net) { /* we should hit here */ chk->whoTo = net; atomic_add_int(&chk->whoTo->ref_count, 1); } else { chk->whoTo = NULL; } drp->ch.chunk_type = SCTP_PACKET_DROPPED; drp->ch.chunk_length = htons(chk->send_size); spc = SCTP_SB_LIMIT_RCV(stcb->sctp_socket); if (spc < 0) { spc = 0; } drp->bottle_bw = htonl(spc); if (asoc->my_rwnd) { drp->current_onq = htonl(asoc->size_on_reasm_queue + asoc->size_on_all_streams + asoc->my_rwnd_control_len + stcb->sctp_socket->so_rcv.sb_cc); } else { /*- * If my rwnd is 0, possibly from mbuf depletion as well as * space used, tell the peer there is NO space aka onq == bw */ drp->current_onq = htonl(spc); } drp->reserved = 0; datap = drp->data; m_copydata(m, iphlen, len, (caddr_t)datap); TAILQ_INSERT_TAIL(&stcb->asoc.control_send_queue, chk, sctp_next); asoc->ctrl_queue_cnt++; } void sctp_send_cwr(struct sctp_tcb *stcb, struct sctp_nets *net, uint32_t high_tsn, uint8_t override) { struct sctp_association *asoc; struct sctp_cwr_chunk *cwr; struct sctp_tmit_chunk *chk; SCTP_TCB_LOCK_ASSERT(stcb); if (net == NULL) { return; } asoc = &stcb->asoc; TAILQ_FOREACH(chk, &asoc->control_send_queue, sctp_next) { if ((chk->rec.chunk_id.id == SCTP_ECN_CWR) && (net == chk->whoTo)) { /* * found a previous CWR queued to same destination * update it if needed */ uint32_t ctsn; cwr = mtod(chk->data, struct sctp_cwr_chunk *); ctsn = ntohl(cwr->tsn); if (SCTP_TSN_GT(high_tsn, ctsn)) { cwr->tsn = htonl(high_tsn); } if (override & SCTP_CWR_REDUCE_OVERRIDE) { /* Make sure override is carried */ cwr->ch.chunk_flags |= SCTP_CWR_REDUCE_OVERRIDE; } return; } } sctp_alloc_a_chunk(stcb, chk); if (chk == NULL) { return; } chk->copy_by_ref = 0; chk->rec.chunk_id.id = SCTP_ECN_CWR; chk->rec.chunk_id.can_take_data = 1; chk->flags = 0; chk->asoc = &stcb->asoc; chk->send_size = sizeof(struct sctp_cwr_chunk); chk->data = sctp_get_mbuf_for_msg(chk->send_size, 0, M_NOWAIT, 1, MT_HEADER); if (chk->data == NULL) { sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); return; } SCTP_BUF_RESV_UF(chk->data, SCTP_MIN_OVERHEAD); SCTP_BUF_LEN(chk->data) = chk->send_size; chk->sent = SCTP_DATAGRAM_UNSENT; chk->snd_count = 0; chk->whoTo = net; atomic_add_int(&chk->whoTo->ref_count, 1); cwr = mtod(chk->data, struct sctp_cwr_chunk *); cwr->ch.chunk_type = SCTP_ECN_CWR; cwr->ch.chunk_flags = override; cwr->ch.chunk_length = htons(sizeof(struct sctp_cwr_chunk)); cwr->tsn = htonl(high_tsn); TAILQ_INSERT_TAIL(&stcb->asoc.control_send_queue, chk, sctp_next); asoc->ctrl_queue_cnt++; } static int sctp_add_stream_reset_out(struct sctp_tcb *stcb, struct sctp_tmit_chunk *chk, uint32_t seq, uint32_t resp_seq, uint32_t last_sent) { uint16_t len, old_len, i; struct sctp_stream_reset_out_request *req_out; struct sctp_chunkhdr *ch; int at; int number_entries = 0; ch = mtod(chk->data, struct sctp_chunkhdr *); old_len = len = SCTP_SIZE32(ntohs(ch->chunk_length)); /* get to new offset for the param. */ req_out = (struct sctp_stream_reset_out_request *)((caddr_t)ch + len); /* now how long will this param be? */ for (i = 0; i < stcb->asoc.streamoutcnt; i++) { if ((stcb->asoc.strmout[i].state == SCTP_STREAM_RESET_PENDING) && (stcb->asoc.strmout[i].chunks_on_queues == 0) && TAILQ_EMPTY(&stcb->asoc.strmout[i].outqueue)) { number_entries++; } } if (number_entries == 0) { return (0); } if (number_entries == stcb->asoc.streamoutcnt) { number_entries = 0; } if (number_entries > SCTP_MAX_STREAMS_AT_ONCE_RESET) { number_entries = SCTP_MAX_STREAMS_AT_ONCE_RESET; } len = (uint16_t) (sizeof(struct sctp_stream_reset_out_request) + (sizeof(uint16_t) * number_entries)); req_out->ph.param_type = htons(SCTP_STR_RESET_OUT_REQUEST); req_out->ph.param_length = htons(len); req_out->request_seq = htonl(seq); req_out->response_seq = htonl(resp_seq); req_out->send_reset_at_tsn = htonl(last_sent); at = 0; if (number_entries) { for (i = 0; i < stcb->asoc.streamoutcnt; i++) { if ((stcb->asoc.strmout[i].state == SCTP_STREAM_RESET_PENDING) && (stcb->asoc.strmout[i].chunks_on_queues == 0) && TAILQ_EMPTY(&stcb->asoc.strmout[i].outqueue)) { req_out->list_of_streams[at] = htons(i); at++; stcb->asoc.strmout[i].state = SCTP_STREAM_RESET_IN_FLIGHT; if (at >= number_entries) { break; } } } } else { for (i = 0; i < stcb->asoc.streamoutcnt; i++) { stcb->asoc.strmout[i].state = SCTP_STREAM_RESET_IN_FLIGHT; } } if (SCTP_SIZE32(len) > len) { /*- * Need to worry about the pad we may end up adding to the * end. This is easy since the struct is either aligned to 4 * bytes or 2 bytes off. */ req_out->list_of_streams[number_entries] = 0; } /* now fix the chunk length */ ch->chunk_length = htons(len + old_len); chk->book_size = len + old_len; chk->book_size_scale = 0; chk->send_size = SCTP_SIZE32(chk->book_size); SCTP_BUF_LEN(chk->data) = chk->send_size; return (1); } static void sctp_add_stream_reset_in(struct sctp_tmit_chunk *chk, int number_entries, uint16_t * list, uint32_t seq) { uint16_t len, old_len, i; struct sctp_stream_reset_in_request *req_in; struct sctp_chunkhdr *ch; ch = mtod(chk->data, struct sctp_chunkhdr *); old_len = len = SCTP_SIZE32(ntohs(ch->chunk_length)); /* get to new offset for the param. */ req_in = (struct sctp_stream_reset_in_request *)((caddr_t)ch + len); /* now how long will this param be? */ len = (uint16_t) (sizeof(struct sctp_stream_reset_in_request) + (sizeof(uint16_t) * number_entries)); req_in->ph.param_type = htons(SCTP_STR_RESET_IN_REQUEST); req_in->ph.param_length = htons(len); req_in->request_seq = htonl(seq); if (number_entries) { for (i = 0; i < number_entries; i++) { req_in->list_of_streams[i] = htons(list[i]); } } if (SCTP_SIZE32(len) > len) { /*- * Need to worry about the pad we may end up adding to the * end. This is easy since the struct is either aligned to 4 * bytes or 2 bytes off. */ req_in->list_of_streams[number_entries] = 0; } /* now fix the chunk length */ ch->chunk_length = htons(len + old_len); chk->book_size = len + old_len; chk->book_size_scale = 0; chk->send_size = SCTP_SIZE32(chk->book_size); SCTP_BUF_LEN(chk->data) = chk->send_size; return; } static void sctp_add_stream_reset_tsn(struct sctp_tmit_chunk *chk, uint32_t seq) { uint16_t len, old_len; struct sctp_stream_reset_tsn_request *req_tsn; struct sctp_chunkhdr *ch; ch = mtod(chk->data, struct sctp_chunkhdr *); old_len = len = SCTP_SIZE32(ntohs(ch->chunk_length)); /* get to new offset for the param. */ req_tsn = (struct sctp_stream_reset_tsn_request *)((caddr_t)ch + len); /* now how long will this param be? */ len = sizeof(struct sctp_stream_reset_tsn_request); req_tsn->ph.param_type = htons(SCTP_STR_RESET_TSN_REQUEST); req_tsn->ph.param_length = htons(len); req_tsn->request_seq = htonl(seq); /* now fix the chunk length */ ch->chunk_length = htons(len + old_len); chk->send_size = len + old_len; chk->book_size = SCTP_SIZE32(chk->send_size); chk->book_size_scale = 0; SCTP_BUF_LEN(chk->data) = SCTP_SIZE32(chk->send_size); return; } void sctp_add_stream_reset_result(struct sctp_tmit_chunk *chk, uint32_t resp_seq, uint32_t result) { uint16_t len, old_len; struct sctp_stream_reset_response *resp; struct sctp_chunkhdr *ch; ch = mtod(chk->data, struct sctp_chunkhdr *); old_len = len = SCTP_SIZE32(ntohs(ch->chunk_length)); /* get to new offset for the param. */ resp = (struct sctp_stream_reset_response *)((caddr_t)ch + len); /* now how long will this param be? */ len = sizeof(struct sctp_stream_reset_response); resp->ph.param_type = htons(SCTP_STR_RESET_RESPONSE); resp->ph.param_length = htons(len); resp->response_seq = htonl(resp_seq); resp->result = ntohl(result); /* now fix the chunk length */ ch->chunk_length = htons(len + old_len); chk->book_size = len + old_len; chk->book_size_scale = 0; chk->send_size = SCTP_SIZE32(chk->book_size); SCTP_BUF_LEN(chk->data) = chk->send_size; return; } void sctp_send_deferred_reset_response(struct sctp_tcb *stcb, struct sctp_stream_reset_list *ent, int response) { struct sctp_association *asoc; struct sctp_tmit_chunk *chk; struct sctp_chunkhdr *ch; asoc = &stcb->asoc; /* * Reset our last reset action to the new one IP -> response * (PERFORMED probably). This assures that if we fail to send, a * retran from the peer will get the new response. */ asoc->last_reset_action[0] = response; if (asoc->stream_reset_outstanding) { return; } sctp_alloc_a_chunk(stcb, chk); if (chk == NULL) { SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, ENOMEM); return; } chk->copy_by_ref = 0; chk->rec.chunk_id.id = SCTP_STREAM_RESET; chk->rec.chunk_id.can_take_data = 0; chk->flags = 0; chk->asoc = &stcb->asoc; chk->book_size = sizeof(struct sctp_chunkhdr); chk->send_size = SCTP_SIZE32(chk->book_size); chk->book_size_scale = 0; chk->data = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA); if (chk->data == NULL) { sctp_free_a_chunk(stcb, chk, SCTP_SO_LOCKED); SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, ENOMEM); return; } SCTP_BUF_RESV_UF(chk->data, SCTP_MIN_OVERHEAD); sctp_add_stream_reset_result(chk, ent->seq, response); /* setup chunk parameters */ chk->sent = SCTP_DATAGRAM_UNSENT; chk->snd_count = 0; if (stcb->asoc.alternate) { chk->whoTo = stcb->asoc.alternate; } else { chk->whoTo = stcb->asoc.primary_destination; } ch = mtod(chk->data, struct sctp_chunkhdr *); ch->chunk_type = SCTP_STREAM_RESET; ch->chunk_flags = 0; ch->chunk_length = htons(chk->book_size); atomic_add_int(&chk->whoTo->ref_count, 1); SCTP_BUF_LEN(chk->data) = chk->send_size; /* insert the chunk for sending */ TAILQ_INSERT_TAIL(&asoc->control_send_queue, chk, sctp_next); asoc->ctrl_queue_cnt++; } void sctp_add_stream_reset_result_tsn(struct sctp_tmit_chunk *chk, uint32_t resp_seq, uint32_t result, uint32_t send_una, uint32_t recv_next) { uint16_t len, old_len; struct sctp_stream_reset_response_tsn *resp; struct sctp_chunkhdr *ch; ch = mtod(chk->data, struct sctp_chunkhdr *); old_len = len = SCTP_SIZE32(ntohs(ch->chunk_length)); /* get to new offset for the param. */ resp = (struct sctp_stream_reset_response_tsn *)((caddr_t)ch + len); /* now how long will this param be? */ len = sizeof(struct sctp_stream_reset_response_tsn); resp->ph.param_type = htons(SCTP_STR_RESET_RESPONSE); resp->ph.param_length = htons(len); resp->response_seq = htonl(resp_seq); resp->result = htonl(result); resp->senders_next_tsn = htonl(send_una); resp->receivers_next_tsn = htonl(recv_next); /* now fix the chunk length */ ch->chunk_length = htons(len + old_len); chk->book_size = len + old_len; chk->send_size = SCTP_SIZE32(chk->book_size); chk->book_size_scale = 0; SCTP_BUF_LEN(chk->data) = chk->send_size; return; } static void sctp_add_an_out_stream(struct sctp_tmit_chunk *chk, uint32_t seq, uint16_t adding) { uint16_t len, old_len; struct sctp_chunkhdr *ch; struct sctp_stream_reset_add_strm *addstr; ch = mtod(chk->data, struct sctp_chunkhdr *); old_len = len = SCTP_SIZE32(ntohs(ch->chunk_length)); /* get to new offset for the param. */ addstr = (struct sctp_stream_reset_add_strm *)((caddr_t)ch + len); /* now how long will this param be? */ len = sizeof(struct sctp_stream_reset_add_strm); /* Fill it out. */ addstr->ph.param_type = htons(SCTP_STR_RESET_ADD_OUT_STREAMS); addstr->ph.param_length = htons(len); addstr->request_seq = htonl(seq); addstr->number_of_streams = htons(adding); addstr->reserved = 0; /* now fix the chunk length */ ch->chunk_length = htons(len + old_len); chk->send_size = len + old_len; chk->book_size = SCTP_SIZE32(chk->send_size); chk->book_size_scale = 0; SCTP_BUF_LEN(chk->data) = SCTP_SIZE32(chk->send_size); return; } static void sctp_add_an_in_stream(struct sctp_tmit_chunk *chk, uint32_t seq, uint16_t adding) { uint16_t len, old_len; struct sctp_chunkhdr *ch; struct sctp_stream_reset_add_strm *addstr; ch = mtod(chk->data, struct sctp_chunkhdr *); old_len = len = SCTP_SIZE32(ntohs(ch->chunk_length)); /* get to new offset for the param. */ addstr = (struct sctp_stream_reset_add_strm *)((caddr_t)ch + len); /* now how long will this param be? */ len = sizeof(struct sctp_stream_reset_add_strm); /* Fill it out. */ addstr->ph.param_type = htons(SCTP_STR_RESET_ADD_IN_STREAMS); addstr->ph.param_length = htons(len); addstr->request_seq = htonl(seq); addstr->number_of_streams = htons(adding); addstr->reserved = 0; /* now fix the chunk length */ ch->chunk_length = htons(len + old_len); chk->send_size = len + old_len; chk->book_size = SCTP_SIZE32(chk->send_size); chk->book_size_scale = 0; SCTP_BUF_LEN(chk->data) = SCTP_SIZE32(chk->send_size); return; } int sctp_send_stream_reset_out_if_possible(struct sctp_tcb *stcb, int so_locked) { struct sctp_association *asoc; struct sctp_tmit_chunk *chk; struct sctp_chunkhdr *ch; uint32_t seq; asoc = &stcb->asoc; asoc->trigger_reset = 0; if (asoc->stream_reset_outstanding) { return (EALREADY); } sctp_alloc_a_chunk(stcb, chk); if (chk == NULL) { SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, ENOMEM); return (ENOMEM); } chk->copy_by_ref = 0; chk->rec.chunk_id.id = SCTP_STREAM_RESET; chk->rec.chunk_id.can_take_data = 0; chk->flags = 0; chk->asoc = &stcb->asoc; chk->book_size = sizeof(struct sctp_chunkhdr); chk->send_size = SCTP_SIZE32(chk->book_size); chk->book_size_scale = 0; chk->data = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA); if (chk->data == NULL) { sctp_free_a_chunk(stcb, chk, so_locked); SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, ENOMEM); return (ENOMEM); } SCTP_BUF_RESV_UF(chk->data, SCTP_MIN_OVERHEAD); /* setup chunk parameters */ chk->sent = SCTP_DATAGRAM_UNSENT; chk->snd_count = 0; if (stcb->asoc.alternate) { chk->whoTo = stcb->asoc.alternate; } else { chk->whoTo = stcb->asoc.primary_destination; } ch = mtod(chk->data, struct sctp_chunkhdr *); ch->chunk_type = SCTP_STREAM_RESET; ch->chunk_flags = 0; ch->chunk_length = htons(chk->book_size); atomic_add_int(&chk->whoTo->ref_count, 1); SCTP_BUF_LEN(chk->data) = chk->send_size; seq = stcb->asoc.str_reset_seq_out; if (sctp_add_stream_reset_out(stcb, chk, seq, (stcb->asoc.str_reset_seq_in - 1), (stcb->asoc.sending_seq - 1))) { seq++; asoc->stream_reset_outstanding++; } else { m_freem(chk->data); chk->data = NULL; sctp_free_a_chunk(stcb, chk, so_locked); return (ENOENT); } asoc->str_reset = chk; /* insert the chunk for sending */ TAILQ_INSERT_TAIL(&asoc->control_send_queue, chk, sctp_next); asoc->ctrl_queue_cnt++; if (stcb->asoc.send_sack) { sctp_send_sack(stcb, so_locked); } sctp_timer_start(SCTP_TIMER_TYPE_STRRESET, stcb->sctp_ep, stcb, chk->whoTo); return (0); } int sctp_send_str_reset_req(struct sctp_tcb *stcb, uint16_t number_entries, uint16_t * list, uint8_t send_in_req, uint8_t send_tsn_req, uint8_t add_stream, uint16_t adding_o, uint16_t adding_i, uint8_t peer_asked) { struct sctp_association *asoc; struct sctp_tmit_chunk *chk; struct sctp_chunkhdr *ch; int can_send_out_req = 0; uint32_t seq; asoc = &stcb->asoc; if (asoc->stream_reset_outstanding) { /*- * Already one pending, must get ACK back to clear the flag. */ SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, EBUSY); return (EBUSY); } if ((send_in_req == 0) && (send_tsn_req == 0) && (add_stream == 0)) { /* nothing to do */ SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, EINVAL); return (EINVAL); } if (send_tsn_req && send_in_req) { /* error, can't do that */ SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, EINVAL); return (EINVAL); } else if (send_in_req) { can_send_out_req = 1; } if (number_entries > (MCLBYTES - SCTP_MIN_OVERHEAD - sizeof(struct sctp_chunkhdr) - sizeof(struct sctp_stream_reset_out_request)) / sizeof(uint16_t)) { SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, ENOMEM); return (ENOMEM); } sctp_alloc_a_chunk(stcb, chk); if (chk == NULL) { SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, ENOMEM); return (ENOMEM); } chk->copy_by_ref = 0; chk->rec.chunk_id.id = SCTP_STREAM_RESET; chk->rec.chunk_id.can_take_data = 0; chk->flags = 0; chk->asoc = &stcb->asoc; chk->book_size = sizeof(struct sctp_chunkhdr); chk->send_size = SCTP_SIZE32(chk->book_size); chk->book_size_scale = 0; chk->data = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA); if (chk->data == NULL) { sctp_free_a_chunk(stcb, chk, SCTP_SO_LOCKED); SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, ENOMEM); return (ENOMEM); } SCTP_BUF_RESV_UF(chk->data, SCTP_MIN_OVERHEAD); /* setup chunk parameters */ chk->sent = SCTP_DATAGRAM_UNSENT; chk->snd_count = 0; if (stcb->asoc.alternate) { chk->whoTo = stcb->asoc.alternate; } else { chk->whoTo = stcb->asoc.primary_destination; } atomic_add_int(&chk->whoTo->ref_count, 1); ch = mtod(chk->data, struct sctp_chunkhdr *); ch->chunk_type = SCTP_STREAM_RESET; ch->chunk_flags = 0; ch->chunk_length = htons(chk->book_size); SCTP_BUF_LEN(chk->data) = chk->send_size; seq = stcb->asoc.str_reset_seq_out; if (can_send_out_req) { int ret; ret = sctp_add_stream_reset_out(stcb, chk, seq, (stcb->asoc.str_reset_seq_in - 1), (stcb->asoc.sending_seq - 1)); if (ret) { seq++; asoc->stream_reset_outstanding++; } } if ((add_stream & 1) && ((stcb->asoc.strm_realoutsize - stcb->asoc.streamoutcnt) < adding_o)) { /* Need to allocate more */ struct sctp_stream_out *oldstream; struct sctp_stream_queue_pending *sp, *nsp; int i; #if defined(SCTP_DETAILED_STR_STATS) int j; #endif oldstream = stcb->asoc.strmout; /* get some more */ SCTP_MALLOC(stcb->asoc.strmout, struct sctp_stream_out *, (stcb->asoc.streamoutcnt + adding_o) * sizeof(struct sctp_stream_out), SCTP_M_STRMO); if (stcb->asoc.strmout == NULL) { uint8_t x; stcb->asoc.strmout = oldstream; /* Turn off the bit */ x = add_stream & 0xfe; add_stream = x; goto skip_stuff; } /* * Ok now we proceed with copying the old out stuff and * initializing the new stuff. */ SCTP_TCB_SEND_LOCK(stcb); stcb->asoc.ss_functions.sctp_ss_clear(stcb, &stcb->asoc, 0, 1); for (i = 0; i < stcb->asoc.streamoutcnt; i++) { TAILQ_INIT(&stcb->asoc.strmout[i].outqueue); stcb->asoc.strmout[i].chunks_on_queues = oldstream[i].chunks_on_queues; stcb->asoc.strmout[i].next_sequence_send = oldstream[i].next_sequence_send; stcb->asoc.strmout[i].last_msg_incomplete = oldstream[i].last_msg_incomplete; stcb->asoc.strmout[i].stream_no = i; stcb->asoc.strmout[i].state = oldstream[i].state; stcb->asoc.ss_functions.sctp_ss_init_stream(&stcb->asoc.strmout[i], &oldstream[i]); /* now anything on those queues? */ TAILQ_FOREACH_SAFE(sp, &oldstream[i].outqueue, next, nsp) { TAILQ_REMOVE(&oldstream[i].outqueue, sp, next); TAILQ_INSERT_TAIL(&stcb->asoc.strmout[i].outqueue, sp, next); } /* Now move assoc pointers too */ if (stcb->asoc.last_out_stream == &oldstream[i]) { stcb->asoc.last_out_stream = &stcb->asoc.strmout[i]; } if (stcb->asoc.locked_on_sending == &oldstream[i]) { stcb->asoc.locked_on_sending = &stcb->asoc.strmout[i]; } } /* now the new streams */ stcb->asoc.ss_functions.sctp_ss_init(stcb, &stcb->asoc, 1); for (i = stcb->asoc.streamoutcnt; i < (stcb->asoc.streamoutcnt + adding_o); i++) { TAILQ_INIT(&stcb->asoc.strmout[i].outqueue); stcb->asoc.strmout[i].chunks_on_queues = 0; #if defined(SCTP_DETAILED_STR_STATS) for (j = 0; j < SCTP_PR_SCTP_MAX + 1; j++) { stcb->asoc.strmout[i].abandoned_sent[j] = 0; stcb->asoc.strmout[i].abandoned_unsent[j] = 0; } #else stcb->asoc.strmout[i].abandoned_sent[0] = 0; stcb->asoc.strmout[i].abandoned_unsent[0] = 0; #endif stcb->asoc.strmout[i].next_sequence_send = 0x0; stcb->asoc.strmout[i].stream_no = i; stcb->asoc.strmout[i].last_msg_incomplete = 0; stcb->asoc.ss_functions.sctp_ss_init_stream(&stcb->asoc.strmout[i], NULL); stcb->asoc.strmout[i].state = SCTP_STREAM_CLOSED; } stcb->asoc.strm_realoutsize = stcb->asoc.streamoutcnt + adding_o; SCTP_FREE(oldstream, SCTP_M_STRMO); SCTP_TCB_SEND_UNLOCK(stcb); } skip_stuff: if ((add_stream & 1) && (adding_o > 0)) { asoc->strm_pending_add_size = adding_o; asoc->peer_req_out = peer_asked; sctp_add_an_out_stream(chk, seq, adding_o); seq++; asoc->stream_reset_outstanding++; } if ((add_stream & 2) && (adding_i > 0)) { sctp_add_an_in_stream(chk, seq, adding_i); seq++; asoc->stream_reset_outstanding++; } if (send_in_req) { sctp_add_stream_reset_in(chk, number_entries, list, seq); seq++; asoc->stream_reset_outstanding++; } if (send_tsn_req) { sctp_add_stream_reset_tsn(chk, seq); asoc->stream_reset_outstanding++; } asoc->str_reset = chk; /* insert the chunk for sending */ TAILQ_INSERT_TAIL(&asoc->control_send_queue, chk, sctp_next); asoc->ctrl_queue_cnt++; if (stcb->asoc.send_sack) { sctp_send_sack(stcb, SCTP_SO_LOCKED); } sctp_timer_start(SCTP_TIMER_TYPE_STRRESET, stcb->sctp_ep, stcb, chk->whoTo); return (0); } void sctp_send_abort(struct mbuf *m, int iphlen, struct sockaddr *src, struct sockaddr *dst, struct sctphdr *sh, uint32_t vtag, struct mbuf *cause, uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum, uint32_t vrf_id, uint16_t port) { /* Don't respond to an ABORT with an ABORT. */ if (sctp_is_there_an_abort_here(m, iphlen, &vtag)) { if (cause) sctp_m_freem(cause); return; } sctp_send_resp_msg(src, dst, sh, vtag, SCTP_ABORT_ASSOCIATION, cause, mflowtype, mflowid, fibnum, vrf_id, port); return; } void sctp_send_operr_to(struct sockaddr *src, struct sockaddr *dst, struct sctphdr *sh, uint32_t vtag, struct mbuf *cause, uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum, uint32_t vrf_id, uint16_t port) { sctp_send_resp_msg(src, dst, sh, vtag, SCTP_OPERATION_ERROR, cause, mflowtype, mflowid, fibnum, vrf_id, port); return; } static struct mbuf * sctp_copy_resume(struct uio *uio, int max_send_len, int user_marks_eor, int *error, uint32_t * sndout, struct mbuf **new_tail) { struct mbuf *m; m = m_uiotombuf(uio, M_WAITOK, max_send_len, 0, (M_PKTHDR | (user_marks_eor ? M_EOR : 0))); if (m == NULL) { SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_OUTPUT, ENOBUFS); *error = ENOBUFS; } else { *sndout = m_length(m, NULL); *new_tail = m_last(m); } return (m); } static int sctp_copy_one(struct sctp_stream_queue_pending *sp, struct uio *uio, int resv_upfront) { sp->data = m_uiotombuf(uio, M_WAITOK, sp->length, resv_upfront, 0); if (sp->data == NULL) { SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_OUTPUT, ENOBUFS); return (ENOBUFS); } sp->tail_mbuf = m_last(sp->data); return (0); } static struct sctp_stream_queue_pending * sctp_copy_it_in(struct sctp_tcb *stcb, struct sctp_association *asoc, struct sctp_sndrcvinfo *srcv, struct uio *uio, struct sctp_nets *net, int max_send_len, int user_marks_eor, int *error) { /*- * This routine must be very careful in its work. Protocol * processing is up and running so care must be taken to spl...() * when you need to do something that may effect the stcb/asoc. The * sb is locked however. When data is copied the protocol processing * should be enabled since this is a slower operation... */ struct sctp_stream_queue_pending *sp = NULL; int resv_in_first; *error = 0; /* Now can we send this? */ if ((SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_SENT) || (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_ACK_SENT) || (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED) || (asoc->state & SCTP_STATE_SHUTDOWN_PENDING)) { /* got data while shutting down */ SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, ECONNRESET); *error = ECONNRESET; goto out_now; } sctp_alloc_a_strmoq(stcb, sp); if (sp == NULL) { SCTP_LTRACE_ERR_RET(NULL, stcb, net, SCTP_FROM_SCTP_OUTPUT, ENOMEM); *error = ENOMEM; goto out_now; } sp->act_flags = 0; sp->sender_all_done = 0; sp->sinfo_flags = srcv->sinfo_flags; sp->timetolive = srcv->sinfo_timetolive; sp->ppid = srcv->sinfo_ppid; sp->context = srcv->sinfo_context; + sp->fsn = 0; + sp->msg_id = atomic_fetchadd_int(&stcb->asoc.assoc_msg_id, 1); (void)SCTP_GETTIME_TIMEVAL(&sp->ts); sp->stream = srcv->sinfo_stream; sp->length = (uint32_t) min(uio->uio_resid, max_send_len); if ((sp->length == (uint32_t) uio->uio_resid) && ((user_marks_eor == 0) || (srcv->sinfo_flags & SCTP_EOF) || (user_marks_eor && (srcv->sinfo_flags & SCTP_EOR)))) { sp->msg_is_complete = 1; } else { sp->msg_is_complete = 0; } sp->sender_all_done = 0; sp->some_taken = 0; sp->put_last_out = 0; resv_in_first = sizeof(struct sctp_data_chunk); sp->data = sp->tail_mbuf = NULL; if (sp->length == 0) { *error = 0; goto skip_copy; } if (srcv->sinfo_keynumber_valid) { sp->auth_keyid = srcv->sinfo_keynumber; } else { sp->auth_keyid = stcb->asoc.authinfo.active_keyid; } if (sctp_auth_is_required_chunk(SCTP_DATA, stcb->asoc.peer_auth_chunks)) { sctp_auth_key_acquire(stcb, sp->auth_keyid); sp->holds_key_ref = 1; } *error = sctp_copy_one(sp, uio, resv_in_first); skip_copy: if (*error) { sctp_free_a_strmoq(stcb, sp, SCTP_SO_LOCKED); sp = NULL; } else { if (sp->sinfo_flags & SCTP_ADDR_OVER) { sp->net = net; atomic_add_int(&sp->net->ref_count, 1); } else { sp->net = NULL; } sctp_set_prsctp_policy(sp); } out_now: return (sp); } int sctp_sosend(struct socket *so, struct sockaddr *addr, struct uio *uio, struct mbuf *top, struct mbuf *control, int flags, struct thread *p ) { int error, use_sndinfo = 0; struct sctp_sndrcvinfo sndrcvninfo; struct sockaddr *addr_to_use; #if defined(INET) && defined(INET6) struct sockaddr_in sin; #endif if (control) { /* process cmsg snd/rcv info (maybe a assoc-id) */ if (sctp_find_cmsg(SCTP_SNDRCV, (void *)&sndrcvninfo, control, sizeof(sndrcvninfo))) { /* got one */ use_sndinfo = 1; } } addr_to_use = addr; #if defined(INET) && defined(INET6) if ((addr) && (addr->sa_family == AF_INET6)) { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)addr; if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { in6_sin6_2_sin(&sin, sin6); addr_to_use = (struct sockaddr *)&sin; } } #endif error = sctp_lower_sosend(so, addr_to_use, uio, top, control, flags, use_sndinfo ? &sndrcvninfo : NULL ,p ); return (error); } int sctp_lower_sosend(struct socket *so, struct sockaddr *addr, struct uio *uio, struct mbuf *i_pak, struct mbuf *control, int flags, struct sctp_sndrcvinfo *srcv , struct thread *p ) { unsigned int sndlen = 0, max_len; int error, len; struct mbuf *top = NULL; int queue_only = 0, queue_only_for_init = 0; int free_cnt_applied = 0; int un_sent; int now_filled = 0; unsigned int inqueue_bytes = 0; struct sctp_block_entry be; struct sctp_inpcb *inp; struct sctp_tcb *stcb = NULL; struct timeval now; struct sctp_nets *net; struct sctp_association *asoc; struct sctp_inpcb *t_inp; int user_marks_eor; int create_lock_applied = 0; int nagle_applies = 0; int some_on_control = 0; int got_all_of_the_send = 0; int hold_tcblock = 0; int non_blocking = 0; uint32_t local_add_more, local_soresv = 0; uint16_t port; uint16_t sinfo_flags; sctp_assoc_t sinfo_assoc_id; error = 0; net = NULL; stcb = NULL; asoc = NULL; t_inp = inp = (struct sctp_inpcb *)so->so_pcb; if (inp == NULL) { SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_OUTPUT, EINVAL); error = EINVAL; if (i_pak) { SCTP_RELEASE_PKT(i_pak); } return (error); } if ((uio == NULL) && (i_pak == NULL)) { SCTP_LTRACE_ERR_RET(inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, EINVAL); return (EINVAL); } user_marks_eor = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR); atomic_add_int(&inp->total_sends, 1); if (uio) { if (uio->uio_resid < 0) { SCTP_LTRACE_ERR_RET(inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, EINVAL); return (EINVAL); } sndlen = (unsigned int)uio->uio_resid; } else { top = SCTP_HEADER_TO_CHAIN(i_pak); sndlen = SCTP_HEADER_LEN(i_pak); } SCTPDBG(SCTP_DEBUG_OUTPUT1, "Send called addr:%p send length %d\n", (void *)addr, sndlen); if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && (inp->sctp_socket->so_qlimit)) { /* The listener can NOT send */ SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_OUTPUT, ENOTCONN); error = ENOTCONN; goto out_unlocked; } /** * Pre-screen address, if one is given the sin-len * must be set correctly! */ if (addr) { union sctp_sockstore *raddr = (union sctp_sockstore *)addr; switch (raddr->sa.sa_family) { #ifdef INET case AF_INET: if (raddr->sin.sin_len != sizeof(struct sockaddr_in)) { SCTP_LTRACE_ERR_RET(inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, EINVAL); error = EINVAL; goto out_unlocked; } port = raddr->sin.sin_port; break; #endif #ifdef INET6 case AF_INET6: if (raddr->sin6.sin6_len != sizeof(struct sockaddr_in6)) { SCTP_LTRACE_ERR_RET(inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, EINVAL); error = EINVAL; goto out_unlocked; } port = raddr->sin6.sin6_port; break; #endif default: SCTP_LTRACE_ERR_RET(inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, EAFNOSUPPORT); error = EAFNOSUPPORT; goto out_unlocked; } } else port = 0; if (srcv) { sinfo_flags = srcv->sinfo_flags; sinfo_assoc_id = srcv->sinfo_assoc_id; if (INVALID_SINFO_FLAG(sinfo_flags) || PR_SCTP_INVALID_POLICY(sinfo_flags)) { SCTP_LTRACE_ERR_RET(inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, EINVAL); error = EINVAL; goto out_unlocked; } if (srcv->sinfo_flags) SCTP_STAT_INCR(sctps_sends_with_flags); } else { sinfo_flags = inp->def_send.sinfo_flags; sinfo_assoc_id = inp->def_send.sinfo_assoc_id; } if (sinfo_flags & SCTP_SENDALL) { /* its a sendall */ error = sctp_sendall(inp, uio, top, srcv); top = NULL; goto out_unlocked; } if ((sinfo_flags & SCTP_ADDR_OVER) && (addr == NULL)) { SCTP_LTRACE_ERR_RET(inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, EINVAL); error = EINVAL; goto out_unlocked; } /* now we must find the assoc */ if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { SCTP_INP_RLOCK(inp); stcb = LIST_FIRST(&inp->sctp_asoc_list); if (stcb) { SCTP_TCB_LOCK(stcb); hold_tcblock = 1; } SCTP_INP_RUNLOCK(inp); } else if (sinfo_assoc_id) { stcb = sctp_findassociation_ep_asocid(inp, sinfo_assoc_id, 0); } else if (addr) { /*- * Since we did not use findep we must * increment it, and if we don't find a tcb * decrement it. */ SCTP_INP_WLOCK(inp); SCTP_INP_INCR_REF(inp); SCTP_INP_WUNLOCK(inp); stcb = sctp_findassociation_ep_addr(&t_inp, addr, &net, NULL, NULL); if (stcb == NULL) { SCTP_INP_WLOCK(inp); SCTP_INP_DECR_REF(inp); SCTP_INP_WUNLOCK(inp); } else { hold_tcblock = 1; } } if ((stcb == NULL) && (addr)) { /* Possible implicit send? */ SCTP_ASOC_CREATE_LOCK(inp); create_lock_applied = 1; if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) { /* Should I really unlock ? */ SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_OUTPUT, EINVAL); error = EINVAL; goto out_unlocked; } if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) && (addr->sa_family == AF_INET6)) { SCTP_LTRACE_ERR_RET(inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, EINVAL); error = EINVAL; goto out_unlocked; } SCTP_INP_WLOCK(inp); SCTP_INP_INCR_REF(inp); SCTP_INP_WUNLOCK(inp); /* With the lock applied look again */ stcb = sctp_findassociation_ep_addr(&t_inp, addr, &net, NULL, NULL); if ((stcb == NULL) && (control != NULL) && (port > 0)) { stcb = sctp_findassociation_cmsgs(&t_inp, port, control, &net, &error); } if (stcb == NULL) { SCTP_INP_WLOCK(inp); SCTP_INP_DECR_REF(inp); SCTP_INP_WUNLOCK(inp); } else { hold_tcblock = 1; } if (error) { goto out_unlocked; } if (t_inp != inp) { SCTP_LTRACE_ERR_RET(inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, ENOTCONN); error = ENOTCONN; goto out_unlocked; } } if (stcb == NULL) { if (addr == NULL) { SCTP_LTRACE_ERR_RET(inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, ENOENT); error = ENOENT; goto out_unlocked; } else { /* We must go ahead and start the INIT process */ uint32_t vrf_id; if ((sinfo_flags & SCTP_ABORT) || ((sinfo_flags & SCTP_EOF) && (sndlen == 0))) { /*- * User asks to abort a non-existant assoc, * or EOF a non-existant assoc with no data */ SCTP_LTRACE_ERR_RET(inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, ENOENT); error = ENOENT; goto out_unlocked; } /* get an asoc/stcb struct */ vrf_id = inp->def_vrf_id; #ifdef INVARIANTS if (create_lock_applied == 0) { panic("Error, should hold create lock and I don't?"); } #endif stcb = sctp_aloc_assoc(inp, addr, &error, 0, vrf_id, inp->sctp_ep.pre_open_stream_count, p ); if (stcb == NULL) { /* Error is setup for us in the call */ goto out_unlocked; } if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; /* * Set the connected flag so we can queue * data */ soisconnecting(so); } hold_tcblock = 1; if (create_lock_applied) { SCTP_ASOC_CREATE_UNLOCK(inp); create_lock_applied = 0; } else { SCTP_PRINTF("Huh-3? create lock should have been on??\n"); } /* * Turn on queue only flag to prevent data from * being sent */ queue_only = 1; asoc = &stcb->asoc; SCTP_SET_STATE(asoc, SCTP_STATE_COOKIE_WAIT); (void)SCTP_GETTIME_TIMEVAL(&asoc->time_entered); /* initialize authentication params for the assoc */ sctp_initialize_auth_params(inp, stcb); if (control) { if (sctp_process_cmsgs_for_init(stcb, control, &error)) { sctp_free_assoc(inp, stcb, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_OUTPUT + SCTP_LOC_5); hold_tcblock = 0; stcb = NULL; goto out_unlocked; } } /* out with the INIT */ queue_only_for_init = 1; /*- * we may want to dig in after this call and adjust the MTU * value. It defaulted to 1500 (constant) but the ro * structure may now have an update and thus we may need to * change it BEFORE we append the message. */ } } else asoc = &stcb->asoc; if (srcv == NULL) srcv = (struct sctp_sndrcvinfo *)&asoc->def_send; if (srcv->sinfo_flags & SCTP_ADDR_OVER) { if (addr) net = sctp_findnet(stcb, addr); else net = NULL; if ((net == NULL) || ((port != 0) && (port != stcb->rport))) { SCTP_LTRACE_ERR_RET(inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, EINVAL); error = EINVAL; goto out_unlocked; } } else { if (stcb->asoc.alternate) { net = stcb->asoc.alternate; } else { net = stcb->asoc.primary_destination; } } atomic_add_int(&stcb->total_sends, 1); /* Keep the stcb from being freed under our feet */ atomic_add_int(&asoc->refcnt, 1); free_cnt_applied = 1; if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NO_FRAGMENT)) { if (sndlen > asoc->smallest_mtu) { SCTP_LTRACE_ERR_RET(inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, EMSGSIZE); error = EMSGSIZE; goto out_unlocked; } } if (SCTP_SO_IS_NBIO(so) || (flags & MSG_NBIO) ) { non_blocking = 1; } /* would we block? */ if (non_blocking) { if (hold_tcblock == 0) { SCTP_TCB_LOCK(stcb); hold_tcblock = 1; } inqueue_bytes = stcb->asoc.total_output_queue_size - (stcb->asoc.chunks_on_out_queue * sizeof(struct sctp_data_chunk)); if ((SCTP_SB_LIMIT_SND(so) < (sndlen + inqueue_bytes + stcb->asoc.sb_send_resv)) || (stcb->asoc.chunks_on_out_queue >= SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue))) { SCTP_LTRACE_ERR_RET(inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, EWOULDBLOCK); if (sndlen > SCTP_SB_LIMIT_SND(so)) error = EMSGSIZE; else error = EWOULDBLOCK; goto out_unlocked; } stcb->asoc.sb_send_resv += sndlen; SCTP_TCB_UNLOCK(stcb); hold_tcblock = 0; } else { atomic_add_int(&stcb->asoc.sb_send_resv, sndlen); } local_soresv = sndlen; if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, ECONNRESET); error = ECONNRESET; goto out_unlocked; } if (create_lock_applied) { SCTP_ASOC_CREATE_UNLOCK(inp); create_lock_applied = 0; } /* Is the stream no. valid? */ if (srcv->sinfo_stream >= asoc->streamoutcnt) { /* Invalid stream number */ SCTP_LTRACE_ERR_RET(inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, EINVAL); error = EINVAL; goto out_unlocked; } if ((asoc->strmout[srcv->sinfo_stream].state != SCTP_STREAM_OPEN) && (asoc->strmout[srcv->sinfo_stream].state != SCTP_STREAM_OPENING)) { /* * Can't queue any data while stream reset is underway. */ if (asoc->strmout[srcv->sinfo_stream].state > SCTP_STREAM_OPEN) { error = EAGAIN; } else { error = EINVAL; } SCTP_LTRACE_ERR_RET(inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, error); goto out_unlocked; } if ((SCTP_GET_STATE(asoc) == SCTP_STATE_COOKIE_WAIT) || (SCTP_GET_STATE(asoc) == SCTP_STATE_COOKIE_ECHOED)) { queue_only = 1; } /* we are now done with all control */ if (control) { sctp_m_freem(control); control = NULL; } if ((SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_SENT) || (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED) || (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_ACK_SENT) || (asoc->state & SCTP_STATE_SHUTDOWN_PENDING)) { if (srcv->sinfo_flags & SCTP_ABORT) { ; } else { SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, ECONNRESET); error = ECONNRESET; goto out_unlocked; } } /* Ok, we will attempt a msgsnd :> */ if (p) { p->td_ru.ru_msgsnd++; } /* Are we aborting? */ if (srcv->sinfo_flags & SCTP_ABORT) { struct mbuf *mm; int tot_demand, tot_out = 0, max_out; SCTP_STAT_INCR(sctps_sends_with_abort); if ((SCTP_GET_STATE(asoc) == SCTP_STATE_COOKIE_WAIT) || (SCTP_GET_STATE(asoc) == SCTP_STATE_COOKIE_ECHOED)) { /* It has to be up before we abort */ /* how big is the user initiated abort? */ SCTP_LTRACE_ERR_RET(inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, EINVAL); error = EINVAL; goto out; } if (hold_tcblock) { SCTP_TCB_UNLOCK(stcb); hold_tcblock = 0; } if (top) { struct mbuf *cntm = NULL; mm = sctp_get_mbuf_for_msg(sizeof(struct sctp_paramhdr), 0, M_WAITOK, 1, MT_DATA); if (sndlen != 0) { for (cntm = top; cntm; cntm = SCTP_BUF_NEXT(cntm)) { tot_out += SCTP_BUF_LEN(cntm); } } } else { /* Must fit in a MTU */ tot_out = sndlen; tot_demand = (tot_out + sizeof(struct sctp_paramhdr)); if (tot_demand > SCTP_DEFAULT_ADD_MORE) { /* To big */ SCTP_LTRACE_ERR_RET(NULL, stcb, net, SCTP_FROM_SCTP_OUTPUT, EMSGSIZE); error = EMSGSIZE; goto out; } mm = sctp_get_mbuf_for_msg(tot_demand, 0, M_WAITOK, 1, MT_DATA); } if (mm == NULL) { SCTP_LTRACE_ERR_RET(NULL, stcb, net, SCTP_FROM_SCTP_OUTPUT, ENOMEM); error = ENOMEM; goto out; } max_out = asoc->smallest_mtu - sizeof(struct sctp_paramhdr); max_out -= sizeof(struct sctp_abort_msg); if (tot_out > max_out) { tot_out = max_out; } if (mm) { struct sctp_paramhdr *ph; /* now move forward the data pointer */ ph = mtod(mm, struct sctp_paramhdr *); ph->param_type = htons(SCTP_CAUSE_USER_INITIATED_ABT); ph->param_length = htons((uint16_t) (sizeof(struct sctp_paramhdr) + tot_out)); ph++; SCTP_BUF_LEN(mm) = tot_out + sizeof(struct sctp_paramhdr); if (top == NULL) { error = uiomove((caddr_t)ph, (int)tot_out, uio); if (error) { /*- * Here if we can't get his data we * still abort we just don't get to * send the users note :-0 */ sctp_m_freem(mm); mm = NULL; } } else { if (sndlen != 0) { SCTP_BUF_NEXT(mm) = top; } } } if (hold_tcblock == 0) { SCTP_TCB_LOCK(stcb); } atomic_add_int(&stcb->asoc.refcnt, -1); free_cnt_applied = 0; /* release this lock, otherwise we hang on ourselves */ sctp_abort_an_association(stcb->sctp_ep, stcb, mm, SCTP_SO_LOCKED); /* now relock the stcb so everything is sane */ hold_tcblock = 0; stcb = NULL; /* * In this case top is already chained to mm avoid double * free, since we free it below if top != NULL and driver * would free it after sending the packet out */ if (sndlen != 0) { top = NULL; } goto out_unlocked; } /* Calculate the maximum we can send */ inqueue_bytes = stcb->asoc.total_output_queue_size - (stcb->asoc.chunks_on_out_queue * sizeof(struct sctp_data_chunk)); if (SCTP_SB_LIMIT_SND(so) > inqueue_bytes) { if (non_blocking) { /* we already checked for non-blocking above. */ max_len = sndlen; } else { max_len = SCTP_SB_LIMIT_SND(so) - inqueue_bytes; } } else { max_len = 0; } if (hold_tcblock) { SCTP_TCB_UNLOCK(stcb); hold_tcblock = 0; } if (asoc->strmout == NULL) { /* huh? software error */ SCTP_LTRACE_ERR_RET(inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, EFAULT); error = EFAULT; goto out_unlocked; } /* Unless E_EOR mode is on, we must make a send FIT in one call. */ if ((user_marks_eor == 0) && (sndlen > SCTP_SB_LIMIT_SND(stcb->sctp_socket))) { /* It will NEVER fit */ SCTP_LTRACE_ERR_RET(NULL, stcb, net, SCTP_FROM_SCTP_OUTPUT, EMSGSIZE); error = EMSGSIZE; goto out_unlocked; } if ((uio == NULL) && user_marks_eor) { /*- * We do not support eeor mode for * sending with mbuf chains (like sendfile). */ SCTP_LTRACE_ERR_RET(NULL, stcb, net, SCTP_FROM_SCTP_OUTPUT, EINVAL); error = EINVAL; goto out_unlocked; } if (user_marks_eor) { local_add_more = min(SCTP_SB_LIMIT_SND(so), SCTP_BASE_SYSCTL(sctp_add_more_threshold)); } else { /*- * For non-eeor the whole message must fit in * the socket send buffer. */ local_add_more = sndlen; } len = 0; if (non_blocking) { goto skip_preblock; } if (((max_len <= local_add_more) && (SCTP_SB_LIMIT_SND(so) >= local_add_more)) || (max_len == 0) || ((stcb->asoc.chunks_on_out_queue + stcb->asoc.stream_queue_cnt) >= SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue))) { /* No room right now ! */ SOCKBUF_LOCK(&so->so_snd); inqueue_bytes = stcb->asoc.total_output_queue_size - (stcb->asoc.chunks_on_out_queue * sizeof(struct sctp_data_chunk)); while ((SCTP_SB_LIMIT_SND(so) < (inqueue_bytes + local_add_more)) || ((stcb->asoc.stream_queue_cnt + stcb->asoc.chunks_on_out_queue) >= SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue))) { SCTPDBG(SCTP_DEBUG_OUTPUT1, "pre_block limit:%u <(inq:%d + %d) || (%d+%d > %d)\n", (unsigned int)SCTP_SB_LIMIT_SND(so), inqueue_bytes, local_add_more, stcb->asoc.stream_queue_cnt, stcb->asoc.chunks_on_out_queue, SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue)); if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_BLK_LOGGING_ENABLE) { sctp_log_block(SCTP_BLOCK_LOG_INTO_BLKA, asoc, sndlen); } be.error = 0; stcb->block_entry = &be; error = sbwait(&so->so_snd); stcb->block_entry = NULL; if (error || so->so_error || be.error) { if (error == 0) { if (so->so_error) error = so->so_error; if (be.error) { error = be.error; } } SOCKBUF_UNLOCK(&so->so_snd); goto out_unlocked; } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_BLK_LOGGING_ENABLE) { sctp_log_block(SCTP_BLOCK_LOG_OUTOF_BLK, asoc, stcb->asoc.total_output_queue_size); } if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { goto out_unlocked; } inqueue_bytes = stcb->asoc.total_output_queue_size - (stcb->asoc.chunks_on_out_queue * sizeof(struct sctp_data_chunk)); } if (SCTP_SB_LIMIT_SND(so) > inqueue_bytes) { max_len = SCTP_SB_LIMIT_SND(so) - inqueue_bytes; } else { max_len = 0; } SOCKBUF_UNLOCK(&so->so_snd); } skip_preblock: if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { goto out_unlocked; } /* * sndlen covers for mbuf case uio_resid covers for the non-mbuf * case NOTE: uio will be null when top/mbuf is passed */ if (sndlen == 0) { if (srcv->sinfo_flags & SCTP_EOF) { got_all_of_the_send = 1; goto dataless_eof; } else { SCTP_LTRACE_ERR_RET(inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, EINVAL); error = EINVAL; goto out; } } if (top == NULL) { struct sctp_stream_queue_pending *sp; struct sctp_stream_out *strm; uint32_t sndout; SCTP_TCB_SEND_LOCK(stcb); if ((asoc->stream_locked) && (asoc->stream_locked_on != srcv->sinfo_stream)) { SCTP_TCB_SEND_UNLOCK(stcb); SCTP_LTRACE_ERR_RET(inp, stcb, net, SCTP_FROM_SCTP_OUTPUT, EINVAL); error = EINVAL; goto out; } SCTP_TCB_SEND_UNLOCK(stcb); strm = &stcb->asoc.strmout[srcv->sinfo_stream]; if (strm->last_msg_incomplete == 0) { do_a_copy_in: sp = sctp_copy_it_in(stcb, asoc, srcv, uio, net, max_len, user_marks_eor, &error); if ((sp == NULL) || (error)) { goto out; } SCTP_TCB_SEND_LOCK(stcb); if (sp->msg_is_complete) { strm->last_msg_incomplete = 0; asoc->stream_locked = 0; } else { /* * Just got locked to this guy in case of an * interrupt. */ strm->last_msg_incomplete = 1; - asoc->stream_locked = 1; - asoc->stream_locked_on = srcv->sinfo_stream; + if (stcb->asoc.idata_supported == 0) { + asoc->stream_locked = 1; + asoc->stream_locked_on = srcv->sinfo_stream; + } sp->sender_all_done = 0; } sctp_snd_sb_alloc(stcb, sp->length); atomic_add_int(&asoc->stream_queue_cnt, 1); if (srcv->sinfo_flags & SCTP_UNORDERED) { SCTP_STAT_INCR(sctps_sends_with_unord); } TAILQ_INSERT_TAIL(&strm->outqueue, sp, next); stcb->asoc.ss_functions.sctp_ss_add_to_stream(stcb, asoc, strm, sp, 1); SCTP_TCB_SEND_UNLOCK(stcb); } else { SCTP_TCB_SEND_LOCK(stcb); sp = TAILQ_LAST(&strm->outqueue, sctp_streamhead); SCTP_TCB_SEND_UNLOCK(stcb); if (sp == NULL) { /* ???? Huh ??? last msg is gone */ #ifdef INVARIANTS panic("Warning: Last msg marked incomplete, yet nothing left?"); #else SCTP_PRINTF("Warning: Last msg marked incomplete, yet nothing left?\n"); strm->last_msg_incomplete = 0; #endif goto do_a_copy_in; } } while (uio->uio_resid > 0) { /* How much room do we have? */ struct mbuf *new_tail, *mm; if (SCTP_SB_LIMIT_SND(so) > stcb->asoc.total_output_queue_size) max_len = SCTP_SB_LIMIT_SND(so) - stcb->asoc.total_output_queue_size; else max_len = 0; if ((max_len > SCTP_BASE_SYSCTL(sctp_add_more_threshold)) || (max_len && (SCTP_SB_LIMIT_SND(so) < SCTP_BASE_SYSCTL(sctp_add_more_threshold))) || (uio->uio_resid && (uio->uio_resid <= (int)max_len))) { sndout = 0; new_tail = NULL; if (hold_tcblock) { SCTP_TCB_UNLOCK(stcb); hold_tcblock = 0; } mm = sctp_copy_resume(uio, max_len, user_marks_eor, &error, &sndout, &new_tail); if ((mm == NULL) || error) { if (mm) { sctp_m_freem(mm); } goto out; } /* Update the mbuf and count */ SCTP_TCB_SEND_LOCK(stcb); if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { /* * we need to get out. Peer probably * aborted. */ sctp_m_freem(mm); if (stcb->asoc.state & SCTP_PCB_FLAGS_WAS_ABORTED) { SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTP_OUTPUT, ECONNRESET); error = ECONNRESET; } SCTP_TCB_SEND_UNLOCK(stcb); goto out; } if (sp->tail_mbuf) { /* tack it to the end */ SCTP_BUF_NEXT(sp->tail_mbuf) = mm; sp->tail_mbuf = new_tail; } else { /* A stolen mbuf */ sp->data = mm; sp->tail_mbuf = new_tail; } sctp_snd_sb_alloc(stcb, sndout); atomic_add_int(&sp->length, sndout); len += sndout; /* Did we reach EOR? */ if ((uio->uio_resid == 0) && ((user_marks_eor == 0) || (srcv->sinfo_flags & SCTP_EOF) || (user_marks_eor && (srcv->sinfo_flags & SCTP_EOR)))) { sp->msg_is_complete = 1; } else { sp->msg_is_complete = 0; } SCTP_TCB_SEND_UNLOCK(stcb); } if (uio->uio_resid == 0) { /* got it all? */ continue; } /* PR-SCTP? */ if ((asoc->prsctp_supported) && (asoc->sent_queue_cnt_removeable > 0)) { /* * This is ugly but we must assure locking * order */ if (hold_tcblock == 0) { SCTP_TCB_LOCK(stcb); hold_tcblock = 1; } sctp_prune_prsctp(stcb, asoc, srcv, sndlen); inqueue_bytes = stcb->asoc.total_output_queue_size - (stcb->asoc.chunks_on_out_queue * sizeof(struct sctp_data_chunk)); if (SCTP_SB_LIMIT_SND(so) > stcb->asoc.total_output_queue_size) max_len = SCTP_SB_LIMIT_SND(so) - inqueue_bytes; else max_len = 0; if (max_len > 0) { continue; } SCTP_TCB_UNLOCK(stcb); hold_tcblock = 0; } /* wait for space now */ if (non_blocking) { /* Non-blocking io in place out */ goto skip_out_eof; } /* What about the INIT, send it maybe */ if (queue_only_for_init) { if (hold_tcblock == 0) { SCTP_TCB_LOCK(stcb); hold_tcblock = 1; } if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) { /* a collision took us forward? */ queue_only = 0; } else { sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED); SCTP_SET_STATE(asoc, SCTP_STATE_COOKIE_WAIT); queue_only = 1; } } if ((net->flight_size > net->cwnd) && (asoc->sctp_cmt_on_off == 0)) { SCTP_STAT_INCR(sctps_send_cwnd_avoid); queue_only = 1; } else if (asoc->ifp_had_enobuf) { SCTP_STAT_INCR(sctps_ifnomemqueued); if (net->flight_size > (2 * net->mtu)) { queue_only = 1; } asoc->ifp_had_enobuf = 0; } un_sent = ((stcb->asoc.total_output_queue_size - stcb->asoc.total_flight) + (stcb->asoc.stream_queue_cnt * sizeof(struct sctp_data_chunk))); if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_NODELAY)) && (stcb->asoc.total_flight > 0) && (stcb->asoc.stream_queue_cnt < SCTP_MAX_DATA_BUNDLING) && (un_sent < (int)(stcb->asoc.smallest_mtu - SCTP_MIN_OVERHEAD))) { /*- * Ok, Nagle is set on and we have data outstanding. * Don't send anything and let SACKs drive out the * data unless we have a "full" segment to send. */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_NAGLE_LOGGING_ENABLE) { sctp_log_nagle_event(stcb, SCTP_NAGLE_APPLIED); } SCTP_STAT_INCR(sctps_naglequeued); nagle_applies = 1; } else { if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_NAGLE_LOGGING_ENABLE) { if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_NODELAY)) sctp_log_nagle_event(stcb, SCTP_NAGLE_SKIPPED); } SCTP_STAT_INCR(sctps_naglesent); nagle_applies = 0; } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_BLK_LOGGING_ENABLE) { sctp_misc_ints(SCTP_CWNDLOG_PRESEND, queue_only_for_init, queue_only, nagle_applies, un_sent); sctp_misc_ints(SCTP_CWNDLOG_PRESEND, stcb->asoc.total_output_queue_size, stcb->asoc.total_flight, stcb->asoc.chunks_on_out_queue, stcb->asoc.total_flight_count); } if (queue_only_for_init) queue_only_for_init = 0; if ((queue_only == 0) && (nagle_applies == 0)) { /*- * need to start chunk output * before blocking.. note that if * a lock is already applied, then * the input via the net is happening * and I don't need to start output :-D */ if (hold_tcblock == 0) { if (SCTP_TCB_TRYLOCK(stcb)) { hold_tcblock = 1; sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_USR_SEND, SCTP_SO_LOCKED); } } else { sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_USR_SEND, SCTP_SO_LOCKED); } if (hold_tcblock == 1) { SCTP_TCB_UNLOCK(stcb); hold_tcblock = 0; } } SOCKBUF_LOCK(&so->so_snd); /*- * This is a bit strange, but I think it will * work. The total_output_queue_size is locked and * protected by the TCB_LOCK, which we just released. * There is a race that can occur between releasing it * above, and me getting the socket lock, where sacks * come in but we have not put the SB_WAIT on the * so_snd buffer to get the wakeup. After the LOCK * is applied the sack_processing will also need to * LOCK the so->so_snd to do the actual sowwakeup(). So * once we have the socket buffer lock if we recheck the * size we KNOW we will get to sleep safely with the * wakeup flag in place. */ if (SCTP_SB_LIMIT_SND(so) <= (stcb->asoc.total_output_queue_size + min(SCTP_BASE_SYSCTL(sctp_add_more_threshold), SCTP_SB_LIMIT_SND(so)))) { if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_BLK_LOGGING_ENABLE) { sctp_log_block(SCTP_BLOCK_LOG_INTO_BLK, asoc, (size_t)uio->uio_resid); } be.error = 0; stcb->block_entry = &be; error = sbwait(&so->so_snd); stcb->block_entry = NULL; if (error || so->so_error || be.error) { if (error == 0) { if (so->so_error) error = so->so_error; if (be.error) { error = be.error; } } SOCKBUF_UNLOCK(&so->so_snd); goto out_unlocked; } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_BLK_LOGGING_ENABLE) { sctp_log_block(SCTP_BLOCK_LOG_OUTOF_BLK, asoc, stcb->asoc.total_output_queue_size); } } SOCKBUF_UNLOCK(&so->so_snd); if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { goto out_unlocked; } } SCTP_TCB_SEND_LOCK(stcb); if (sp) { if (sp->msg_is_complete == 0) { strm->last_msg_incomplete = 1; - asoc->stream_locked = 1; - asoc->stream_locked_on = srcv->sinfo_stream; + if (stcb->asoc.idata_supported == 0) { + asoc->stream_locked = 1; + asoc->stream_locked_on = srcv->sinfo_stream; + } } else { sp->sender_all_done = 1; strm->last_msg_incomplete = 0; asoc->stream_locked = 0; } } else { SCTP_PRINTF("Huh no sp TSNH?\n"); strm->last_msg_incomplete = 0; asoc->stream_locked = 0; } SCTP_TCB_SEND_UNLOCK(stcb); if (uio->uio_resid == 0) { got_all_of_the_send = 1; } } else { /* We send in a 0, since we do NOT have any locks */ error = sctp_msg_append(stcb, net, top, srcv, 0); top = NULL; if (srcv->sinfo_flags & SCTP_EOF) { /* * This should only happen for Panda for the mbuf * send case, which does NOT yet support EEOR mode. * Thus, we can just set this flag to do the proper * EOF handling. */ got_all_of_the_send = 1; } } if (error) { goto out; } dataless_eof: /* EOF thing ? */ if ((srcv->sinfo_flags & SCTP_EOF) && (got_all_of_the_send == 1)) { int cnt; SCTP_STAT_INCR(sctps_sends_with_eof); error = 0; if (hold_tcblock == 0) { SCTP_TCB_LOCK(stcb); hold_tcblock = 1; } cnt = sctp_is_there_unsent_data(stcb, SCTP_SO_LOCKED); if (TAILQ_EMPTY(&asoc->send_queue) && TAILQ_EMPTY(&asoc->sent_queue) && (cnt == 0)) { if (asoc->locked_on_sending) { goto abort_anyway; } /* there is nothing queued to send, so I'm done... */ if ((SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) && (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_RECEIVED) && (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) { struct sctp_nets *netp; /* only send SHUTDOWN the first time through */ if (SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) { SCTP_STAT_DECR_GAUGE32(sctps_currestab); } SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT); SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING); sctp_stop_timers_for_shutdown(stcb); if (stcb->asoc.alternate) { netp = stcb->asoc.alternate; } else { netp = stcb->asoc.primary_destination; } sctp_send_shutdown(stcb, netp); sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, stcb->sctp_ep, stcb, netp); sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb, asoc->primary_destination); } } else { /*- * we still got (or just got) data to send, so set * SHUTDOWN_PENDING */ /*- * XXX sockets draft says that SCTP_EOF should be * sent with no data. currently, we will allow user * data to be sent first and move to * SHUTDOWN-PENDING */ if ((SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) && (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_RECEIVED) && (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) { if (hold_tcblock == 0) { SCTP_TCB_LOCK(stcb); hold_tcblock = 1; } if (asoc->locked_on_sending) { /* Locked to send out the data */ struct sctp_stream_queue_pending *sp; sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead); if (sp) { if ((sp->length == 0) && (sp->msg_is_complete == 0)) asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT; } } asoc->state |= SCTP_STATE_SHUTDOWN_PENDING; if (TAILQ_EMPTY(&asoc->send_queue) && TAILQ_EMPTY(&asoc->sent_queue) && (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) { struct mbuf *op_err; char msg[SCTP_DIAG_INFO_LEN]; abort_anyway: if (free_cnt_applied) { atomic_add_int(&stcb->asoc.refcnt, -1); free_cnt_applied = 0; } snprintf(msg, sizeof(msg), "%s:%d at %s", __FILE__, __LINE__, __func__); op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), msg); sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_LOCKED); /* * now relock the stcb so everything * is sane */ hold_tcblock = 0; stcb = NULL; goto out; } sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb, asoc->primary_destination); sctp_feature_off(inp, SCTP_PCB_FLAGS_NODELAY); } } } skip_out_eof: if (!TAILQ_EMPTY(&stcb->asoc.control_send_queue)) { some_on_control = 1; } if (queue_only_for_init) { if (hold_tcblock == 0) { SCTP_TCB_LOCK(stcb); hold_tcblock = 1; } if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) { /* a collision took us forward? */ queue_only = 0; } else { sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED); SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_COOKIE_WAIT); queue_only = 1; } } if ((net->flight_size > net->cwnd) && (stcb->asoc.sctp_cmt_on_off == 0)) { SCTP_STAT_INCR(sctps_send_cwnd_avoid); queue_only = 1; } else if (asoc->ifp_had_enobuf) { SCTP_STAT_INCR(sctps_ifnomemqueued); if (net->flight_size > (2 * net->mtu)) { queue_only = 1; } asoc->ifp_had_enobuf = 0; } un_sent = ((stcb->asoc.total_output_queue_size - stcb->asoc.total_flight) + (stcb->asoc.stream_queue_cnt * sizeof(struct sctp_data_chunk))); if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_NODELAY)) && (stcb->asoc.total_flight > 0) && (stcb->asoc.stream_queue_cnt < SCTP_MAX_DATA_BUNDLING) && (un_sent < (int)(stcb->asoc.smallest_mtu - SCTP_MIN_OVERHEAD))) { /*- * Ok, Nagle is set on and we have data outstanding. * Don't send anything and let SACKs drive out the * data unless wen have a "full" segment to send. */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_NAGLE_LOGGING_ENABLE) { sctp_log_nagle_event(stcb, SCTP_NAGLE_APPLIED); } SCTP_STAT_INCR(sctps_naglequeued); nagle_applies = 1; } else { if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_NAGLE_LOGGING_ENABLE) { if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_NODELAY)) sctp_log_nagle_event(stcb, SCTP_NAGLE_SKIPPED); } SCTP_STAT_INCR(sctps_naglesent); nagle_applies = 0; } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_BLK_LOGGING_ENABLE) { sctp_misc_ints(SCTP_CWNDLOG_PRESEND, queue_only_for_init, queue_only, nagle_applies, un_sent); sctp_misc_ints(SCTP_CWNDLOG_PRESEND, stcb->asoc.total_output_queue_size, stcb->asoc.total_flight, stcb->asoc.chunks_on_out_queue, stcb->asoc.total_flight_count); } if ((queue_only == 0) && (nagle_applies == 0) && (stcb->asoc.peers_rwnd && un_sent)) { /* we can attempt to send too. */ if (hold_tcblock == 0) { /* * If there is activity recv'ing sacks no need to * send */ if (SCTP_TCB_TRYLOCK(stcb)) { sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_USR_SEND, SCTP_SO_LOCKED); hold_tcblock = 1; } } else { sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_USR_SEND, SCTP_SO_LOCKED); } } else if ((queue_only == 0) && (stcb->asoc.peers_rwnd == 0) && (stcb->asoc.total_flight == 0)) { /* We get to have a probe outstanding */ if (hold_tcblock == 0) { hold_tcblock = 1; SCTP_TCB_LOCK(stcb); } sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_USR_SEND, SCTP_SO_LOCKED); } else if (some_on_control) { int num_out, reason, frag_point; /* Here we do control only */ if (hold_tcblock == 0) { hold_tcblock = 1; SCTP_TCB_LOCK(stcb); } frag_point = sctp_get_frag_point(stcb, &stcb->asoc); (void)sctp_med_chunk_output(inp, stcb, &stcb->asoc, &num_out, &reason, 1, 1, &now, &now_filled, frag_point, SCTP_SO_LOCKED); } SCTPDBG(SCTP_DEBUG_OUTPUT1, "USR Send complete qo:%d prw:%d unsent:%d tf:%d cooq:%d toqs:%d err:%d\n", queue_only, stcb->asoc.peers_rwnd, un_sent, stcb->asoc.total_flight, stcb->asoc.chunks_on_out_queue, stcb->asoc.total_output_queue_size, error); out: out_unlocked: if (local_soresv && stcb) { atomic_subtract_int(&stcb->asoc.sb_send_resv, sndlen); } if (create_lock_applied) { SCTP_ASOC_CREATE_UNLOCK(inp); } if ((stcb) && hold_tcblock) { SCTP_TCB_UNLOCK(stcb); } if (stcb && free_cnt_applied) { atomic_add_int(&stcb->asoc.refcnt, -1); } #ifdef INVARIANTS if (stcb) { if (mtx_owned(&stcb->tcb_mtx)) { panic("Leaving with tcb mtx owned?"); } if (mtx_owned(&stcb->tcb_send_mtx)) { panic("Leaving with tcb send mtx owned?"); } } #endif if (top) { sctp_m_freem(top); } if (control) { sctp_m_freem(control); } return (error); } /* * generate an AUTHentication chunk, if required */ struct mbuf * sctp_add_auth_chunk(struct mbuf *m, struct mbuf **m_end, struct sctp_auth_chunk **auth_ret, uint32_t * offset, struct sctp_tcb *stcb, uint8_t chunk) { struct mbuf *m_auth; struct sctp_auth_chunk *auth; int chunk_len; struct mbuf *cn; if ((m_end == NULL) || (auth_ret == NULL) || (offset == NULL) || (stcb == NULL)) return (m); if (stcb->asoc.auth_supported == 0) { return (m); } /* does the requested chunk require auth? */ if (!sctp_auth_is_required_chunk(chunk, stcb->asoc.peer_auth_chunks)) { return (m); } m_auth = sctp_get_mbuf_for_msg(sizeof(*auth), 0, M_NOWAIT, 1, MT_HEADER); if (m_auth == NULL) { /* no mbuf's */ return (m); } /* reserve some space if this will be the first mbuf */ if (m == NULL) SCTP_BUF_RESV_UF(m_auth, SCTP_MIN_OVERHEAD); /* fill in the AUTH chunk details */ auth = mtod(m_auth, struct sctp_auth_chunk *); bzero(auth, sizeof(*auth)); auth->ch.chunk_type = SCTP_AUTHENTICATION; auth->ch.chunk_flags = 0; chunk_len = sizeof(*auth) + sctp_get_hmac_digest_len(stcb->asoc.peer_hmac_id); auth->ch.chunk_length = htons(chunk_len); auth->hmac_id = htons(stcb->asoc.peer_hmac_id); /* key id and hmac digest will be computed and filled in upon send */ /* save the offset where the auth was inserted into the chain */ *offset = 0; for (cn = m; cn; cn = SCTP_BUF_NEXT(cn)) { *offset += SCTP_BUF_LEN(cn); } /* update length and return pointer to the auth chunk */ SCTP_BUF_LEN(m_auth) = chunk_len; m = sctp_copy_mbufchain(m_auth, m, m_end, 1, chunk_len, 0); if (auth_ret != NULL) *auth_ret = auth; return (m); } #ifdef INET6 int sctp_v6src_match_nexthop(struct sockaddr_in6 *src6, sctp_route_t * ro) { struct nd_prefix *pfx = NULL; struct nd_pfxrouter *pfxrtr = NULL; struct sockaddr_in6 gw6; if (ro == NULL || ro->ro_rt == NULL || src6->sin6_family != AF_INET6) return (0); /* get prefix entry of address */ LIST_FOREACH(pfx, &MODULE_GLOBAL(nd_prefix), ndpr_entry) { if (pfx->ndpr_stateflags & NDPRF_DETACHED) continue; if (IN6_ARE_MASKED_ADDR_EQUAL(&pfx->ndpr_prefix.sin6_addr, &src6->sin6_addr, &pfx->ndpr_mask)) break; } /* no prefix entry in the prefix list */ if (pfx == NULL) { SCTPDBG(SCTP_DEBUG_OUTPUT2, "No prefix entry for "); SCTPDBG_ADDR(SCTP_DEBUG_OUTPUT2, (struct sockaddr *)src6); return (0); } SCTPDBG(SCTP_DEBUG_OUTPUT2, "v6src_match_nexthop(), Prefix entry is "); SCTPDBG_ADDR(SCTP_DEBUG_OUTPUT2, (struct sockaddr *)src6); /* search installed gateway from prefix entry */ LIST_FOREACH(pfxrtr, &pfx->ndpr_advrtrs, pfr_entry) { memset(&gw6, 0, sizeof(struct sockaddr_in6)); gw6.sin6_family = AF_INET6; gw6.sin6_len = sizeof(struct sockaddr_in6); memcpy(&gw6.sin6_addr, &pfxrtr->router->rtaddr, sizeof(struct in6_addr)); SCTPDBG(SCTP_DEBUG_OUTPUT2, "prefix router is "); SCTPDBG_ADDR(SCTP_DEBUG_OUTPUT2, (struct sockaddr *)&gw6); SCTPDBG(SCTP_DEBUG_OUTPUT2, "installed router is "); SCTPDBG_ADDR(SCTP_DEBUG_OUTPUT2, ro->ro_rt->rt_gateway); if (sctp_cmpaddr((struct sockaddr *)&gw6, ro->ro_rt->rt_gateway)) { SCTPDBG(SCTP_DEBUG_OUTPUT2, "pfxrouter is installed\n"); return (1); } } SCTPDBG(SCTP_DEBUG_OUTPUT2, "pfxrouter is not installed\n"); return (0); } #endif int sctp_v4src_match_nexthop(struct sctp_ifa *sifa, sctp_route_t * ro) { #ifdef INET struct sockaddr_in *sin, *mask; struct ifaddr *ifa; struct in_addr srcnetaddr, gwnetaddr; if (ro == NULL || ro->ro_rt == NULL || sifa->address.sa.sa_family != AF_INET) { return (0); } ifa = (struct ifaddr *)sifa->ifa; mask = (struct sockaddr_in *)(ifa->ifa_netmask); sin = &sifa->address.sin; srcnetaddr.s_addr = (sin->sin_addr.s_addr & mask->sin_addr.s_addr); SCTPDBG(SCTP_DEBUG_OUTPUT1, "match_nexthop4: src address is "); SCTPDBG_ADDR(SCTP_DEBUG_OUTPUT2, &sifa->address.sa); SCTPDBG(SCTP_DEBUG_OUTPUT1, "network address is %x\n", srcnetaddr.s_addr); sin = (struct sockaddr_in *)ro->ro_rt->rt_gateway; gwnetaddr.s_addr = (sin->sin_addr.s_addr & mask->sin_addr.s_addr); SCTPDBG(SCTP_DEBUG_OUTPUT1, "match_nexthop4: nexthop is "); SCTPDBG_ADDR(SCTP_DEBUG_OUTPUT2, ro->ro_rt->rt_gateway); SCTPDBG(SCTP_DEBUG_OUTPUT1, "network address is %x\n", gwnetaddr.s_addr); if (srcnetaddr.s_addr == gwnetaddr.s_addr) { return (1); } #endif return (0); } Index: head/sys/netinet/sctp_pcb.c =================================================================== --- head/sys/netinet/sctp_pcb.c (revision 297661) +++ head/sys/netinet/sctp_pcb.c (revision 297662) @@ -1,7070 +1,7117 @@ /*- * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved. * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * a) Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * b) Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the distribution. * * c) Neither the name of Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #if defined(INET) || defined(INET6) #include #endif #ifdef INET6 #include #endif #include #include #include VNET_DEFINE(struct sctp_base_info, system_base_info); /* FIX: we don't handle multiple link local scopes */ /* "scopeless" replacement IN6_ARE_ADDR_EQUAL */ #ifdef INET6 int SCTP6_ARE_ADDR_EQUAL(struct sockaddr_in6 *a, struct sockaddr_in6 *b) { struct sockaddr_in6 tmp_a, tmp_b; memcpy(&tmp_a, a, sizeof(struct sockaddr_in6)); if (sa6_embedscope(&tmp_a, MODULE_GLOBAL(ip6_use_defzone)) != 0) { return (0); } memcpy(&tmp_b, b, sizeof(struct sockaddr_in6)); if (sa6_embedscope(&tmp_b, MODULE_GLOBAL(ip6_use_defzone)) != 0) { return (0); } return (IN6_ARE_ADDR_EQUAL(&tmp_a.sin6_addr, &tmp_b.sin6_addr)); } #endif void sctp_fill_pcbinfo(struct sctp_pcbinfo *spcb) { /* * We really don't need to lock this, but I will just because it * does not hurt. */ SCTP_INP_INFO_RLOCK(); spcb->ep_count = SCTP_BASE_INFO(ipi_count_ep); spcb->asoc_count = SCTP_BASE_INFO(ipi_count_asoc); spcb->laddr_count = SCTP_BASE_INFO(ipi_count_laddr); spcb->raddr_count = SCTP_BASE_INFO(ipi_count_raddr); spcb->chk_count = SCTP_BASE_INFO(ipi_count_chunk); spcb->readq_count = SCTP_BASE_INFO(ipi_count_readq); spcb->stream_oque = SCTP_BASE_INFO(ipi_count_strmoq); spcb->free_chunks = SCTP_BASE_INFO(ipi_free_chunks); SCTP_INP_INFO_RUNLOCK(); } /*- * Addresses are added to VRF's (Virtual Router's). For BSD we * have only the default VRF 0. We maintain a hash list of * VRF's. Each VRF has its own list of sctp_ifn's. Each of * these has a list of addresses. When we add a new address * to a VRF we lookup the ifn/ifn_index, if the ifn does * not exist we create it and add it to the list of IFN's * within the VRF. Once we have the sctp_ifn, we add the * address to the list. So we look something like: * * hash-vrf-table * vrf-> ifn-> ifn -> ifn * vrf | * ... +--ifa-> ifa -> ifa * vrf * * We keep these separate lists since the SCTP subsystem will * point to these from its source address selection nets structure. * When an address is deleted it does not happen right away on * the SCTP side, it gets scheduled. What we do when a * delete happens is immediately remove the address from * the master list and decrement the refcount. As our * addip iterator works through and frees the src address * selection pointing to the sctp_ifa, eventually the refcount * will reach 0 and we will delete it. Note that it is assumed * that any locking on system level ifn/ifa is done at the * caller of these functions and these routines will only * lock the SCTP structures as they add or delete things. * * Other notes on VRF concepts. * - An endpoint can be in multiple VRF's * - An association lives within a VRF and only one VRF. * - Any incoming packet we can deduce the VRF for by * looking at the mbuf/pak inbound (for BSD its VRF=0 :D) * - Any downward send call or connect call must supply the * VRF via ancillary data or via some sort of set default * VRF socket option call (again for BSD no brainer since * the VRF is always 0). * - An endpoint may add multiple VRF's to it. * - Listening sockets can accept associations in any * of the VRF's they are in but the assoc will end up * in only one VRF (gotten from the packet or connect/send). * */ struct sctp_vrf * sctp_allocate_vrf(int vrf_id) { struct sctp_vrf *vrf = NULL; struct sctp_vrflist *bucket; /* First allocate the VRF structure */ vrf = sctp_find_vrf(vrf_id); if (vrf) { /* Already allocated */ return (vrf); } SCTP_MALLOC(vrf, struct sctp_vrf *, sizeof(struct sctp_vrf), SCTP_M_VRF); if (vrf == NULL) { /* No memory */ #ifdef INVARIANTS panic("No memory for VRF:%d", vrf_id); #endif return (NULL); } /* setup the VRF */ memset(vrf, 0, sizeof(struct sctp_vrf)); vrf->vrf_id = vrf_id; LIST_INIT(&vrf->ifnlist); vrf->total_ifa_count = 0; vrf->refcount = 0; /* now also setup table ids */ SCTP_INIT_VRF_TABLEID(vrf); /* Init the HASH of addresses */ vrf->vrf_addr_hash = SCTP_HASH_INIT(SCTP_VRF_ADDR_HASH_SIZE, &vrf->vrf_addr_hashmark); if (vrf->vrf_addr_hash == NULL) { /* No memory */ #ifdef INVARIANTS panic("No memory for VRF:%d", vrf_id); #endif SCTP_FREE(vrf, SCTP_M_VRF); return (NULL); } /* Add it to the hash table */ bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))]; LIST_INSERT_HEAD(bucket, vrf, next_vrf); atomic_add_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1); return (vrf); } struct sctp_ifn * sctp_find_ifn(void *ifn, uint32_t ifn_index) { struct sctp_ifn *sctp_ifnp; struct sctp_ifnlist *hash_ifn_head; /* * We assume the lock is held for the addresses if that's wrong * problems could occur :-) */ hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))]; LIST_FOREACH(sctp_ifnp, hash_ifn_head, next_bucket) { if (sctp_ifnp->ifn_index == ifn_index) { return (sctp_ifnp); } if (sctp_ifnp->ifn_p && ifn && (sctp_ifnp->ifn_p == ifn)) { return (sctp_ifnp); } } return (NULL); } struct sctp_vrf * sctp_find_vrf(uint32_t vrf_id) { struct sctp_vrflist *bucket; struct sctp_vrf *liste; bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))]; LIST_FOREACH(liste, bucket, next_vrf) { if (vrf_id == liste->vrf_id) { return (liste); } } return (NULL); } void sctp_free_vrf(struct sctp_vrf *vrf) { if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&vrf->refcount)) { if (vrf->vrf_addr_hash) { SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark); vrf->vrf_addr_hash = NULL; } /* We zero'd the count */ LIST_REMOVE(vrf, next_vrf); SCTP_FREE(vrf, SCTP_M_VRF); atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1); } } void sctp_free_ifn(struct sctp_ifn *sctp_ifnp) { if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifnp->refcount)) { /* We zero'd the count */ if (sctp_ifnp->vrf) { sctp_free_vrf(sctp_ifnp->vrf); } SCTP_FREE(sctp_ifnp, SCTP_M_IFN); atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifns), 1); } } void sctp_update_ifn_mtu(uint32_t ifn_index, uint32_t mtu) { struct sctp_ifn *sctp_ifnp; sctp_ifnp = sctp_find_ifn((void *)NULL, ifn_index); if (sctp_ifnp != NULL) { sctp_ifnp->ifn_mtu = mtu; } } void sctp_free_ifa(struct sctp_ifa *sctp_ifap) { if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifap->refcount)) { /* We zero'd the count */ if (sctp_ifap->ifn_p) { sctp_free_ifn(sctp_ifap->ifn_p); } SCTP_FREE(sctp_ifap, SCTP_M_IFA); atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifas), 1); } } static void sctp_delete_ifn(struct sctp_ifn *sctp_ifnp, int hold_addr_lock) { struct sctp_ifn *found; found = sctp_find_ifn(sctp_ifnp->ifn_p, sctp_ifnp->ifn_index); if (found == NULL) { /* Not in the list.. sorry */ return; } if (hold_addr_lock == 0) SCTP_IPI_ADDR_WLOCK(); LIST_REMOVE(sctp_ifnp, next_bucket); LIST_REMOVE(sctp_ifnp, next_ifn); SCTP_DEREGISTER_INTERFACE(sctp_ifnp->ifn_index, sctp_ifnp->registered_af); if (hold_addr_lock == 0) SCTP_IPI_ADDR_WUNLOCK(); /* Take away the reference, and possibly free it */ sctp_free_ifn(sctp_ifnp); } void sctp_mark_ifa_addr_down(uint32_t vrf_id, struct sockaddr *addr, const char *if_name, uint32_t ifn_index) { struct sctp_vrf *vrf; struct sctp_ifa *sctp_ifap; SCTP_IPI_ADDR_RLOCK(); vrf = sctp_find_vrf(vrf_id); if (vrf == NULL) { SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id); goto out; } sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED); if (sctp_ifap == NULL) { SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n"); goto out; } if (sctp_ifap->ifn_p == NULL) { SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unuseable\n"); goto out; } if (if_name) { if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) != 0) { SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n", sctp_ifap->ifn_p->ifn_name, if_name); goto out; } } else { if (sctp_ifap->ifn_p->ifn_index != ifn_index) { SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n", sctp_ifap->ifn_p->ifn_index, ifn_index); goto out; } } sctp_ifap->localifa_flags &= (~SCTP_ADDR_VALID); sctp_ifap->localifa_flags |= SCTP_ADDR_IFA_UNUSEABLE; out: SCTP_IPI_ADDR_RUNLOCK(); } void sctp_mark_ifa_addr_up(uint32_t vrf_id, struct sockaddr *addr, const char *if_name, uint32_t ifn_index) { struct sctp_vrf *vrf; struct sctp_ifa *sctp_ifap; SCTP_IPI_ADDR_RLOCK(); vrf = sctp_find_vrf(vrf_id); if (vrf == NULL) { SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id); goto out; } sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED); if (sctp_ifap == NULL) { SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n"); goto out; } if (sctp_ifap->ifn_p == NULL) { SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unuseable\n"); goto out; } if (if_name) { if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) != 0) { SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n", sctp_ifap->ifn_p->ifn_name, if_name); goto out; } } else { if (sctp_ifap->ifn_p->ifn_index != ifn_index) { SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n", sctp_ifap->ifn_p->ifn_index, ifn_index); goto out; } } sctp_ifap->localifa_flags &= (~SCTP_ADDR_IFA_UNUSEABLE); sctp_ifap->localifa_flags |= SCTP_ADDR_VALID; out: SCTP_IPI_ADDR_RUNLOCK(); } /*- * Add an ifa to an ifn. * Register the interface as necessary. * NOTE: ADDR write lock MUST be held. */ static void sctp_add_ifa_to_ifn(struct sctp_ifn *sctp_ifnp, struct sctp_ifa *sctp_ifap) { int ifa_af; LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa); sctp_ifap->ifn_p = sctp_ifnp; atomic_add_int(&sctp_ifap->ifn_p->refcount, 1); /* update address counts */ sctp_ifnp->ifa_count++; ifa_af = sctp_ifap->address.sa.sa_family; switch (ifa_af) { #ifdef INET case AF_INET: sctp_ifnp->num_v4++; break; #endif #ifdef INET6 case AF_INET6: sctp_ifnp->num_v6++; break; #endif default: break; } if (sctp_ifnp->ifa_count == 1) { /* register the new interface */ SCTP_REGISTER_INTERFACE(sctp_ifnp->ifn_index, ifa_af); sctp_ifnp->registered_af = ifa_af; } } /*- * Remove an ifa from its ifn. * If no more addresses exist, remove the ifn too. Otherwise, re-register * the interface based on the remaining address families left. * NOTE: ADDR write lock MUST be held. */ static void sctp_remove_ifa_from_ifn(struct sctp_ifa *sctp_ifap) { LIST_REMOVE(sctp_ifap, next_ifa); if (sctp_ifap->ifn_p) { /* update address counts */ sctp_ifap->ifn_p->ifa_count--; switch (sctp_ifap->address.sa.sa_family) { #ifdef INET case AF_INET: sctp_ifap->ifn_p->num_v4--; break; #endif #ifdef INET6 case AF_INET6: sctp_ifap->ifn_p->num_v6--; break; #endif default: break; } if (LIST_EMPTY(&sctp_ifap->ifn_p->ifalist)) { /* remove the ifn, possibly freeing it */ sctp_delete_ifn(sctp_ifap->ifn_p, SCTP_ADDR_LOCKED); } else { /* re-register address family type, if needed */ if ((sctp_ifap->ifn_p->num_v6 == 0) && (sctp_ifap->ifn_p->registered_af == AF_INET6)) { SCTP_DEREGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET6); SCTP_REGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET); sctp_ifap->ifn_p->registered_af = AF_INET; } else if ((sctp_ifap->ifn_p->num_v4 == 0) && (sctp_ifap->ifn_p->registered_af == AF_INET)) { SCTP_DEREGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET); SCTP_REGISTER_INTERFACE(sctp_ifap->ifn_p->ifn_index, AF_INET6); sctp_ifap->ifn_p->registered_af = AF_INET6; } /* free the ifn refcount */ sctp_free_ifn(sctp_ifap->ifn_p); } sctp_ifap->ifn_p = NULL; } } struct sctp_ifa * sctp_add_addr_to_vrf(uint32_t vrf_id, void *ifn, uint32_t ifn_index, uint32_t ifn_type, const char *if_name, void *ifa, struct sockaddr *addr, uint32_t ifa_flags, int dynamic_add) { struct sctp_vrf *vrf; struct sctp_ifn *sctp_ifnp = NULL; struct sctp_ifa *sctp_ifap = NULL; struct sctp_ifalist *hash_addr_head; struct sctp_ifnlist *hash_ifn_head; uint32_t hash_of_addr; int new_ifn_af = 0; #ifdef SCTP_DEBUG SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: adding address: ", vrf_id); SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr); #endif SCTP_IPI_ADDR_WLOCK(); sctp_ifnp = sctp_find_ifn(ifn, ifn_index); if (sctp_ifnp) { vrf = sctp_ifnp->vrf; } else { vrf = sctp_find_vrf(vrf_id); if (vrf == NULL) { vrf = sctp_allocate_vrf(vrf_id); if (vrf == NULL) { SCTP_IPI_ADDR_WUNLOCK(); return (NULL); } } } if (sctp_ifnp == NULL) { /* * build one and add it, can't hold lock until after malloc * done though. */ SCTP_IPI_ADDR_WUNLOCK(); SCTP_MALLOC(sctp_ifnp, struct sctp_ifn *, sizeof(struct sctp_ifn), SCTP_M_IFN); if (sctp_ifnp == NULL) { #ifdef INVARIANTS panic("No memory for IFN"); #endif return (NULL); } memset(sctp_ifnp, 0, sizeof(struct sctp_ifn)); sctp_ifnp->ifn_index = ifn_index; sctp_ifnp->ifn_p = ifn; sctp_ifnp->ifn_type = ifn_type; sctp_ifnp->refcount = 0; sctp_ifnp->vrf = vrf; atomic_add_int(&vrf->refcount, 1); sctp_ifnp->ifn_mtu = SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index, addr->sa_family); if (if_name != NULL) { snprintf(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", if_name); } else { snprintf(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", "unknown"); } hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))]; LIST_INIT(&sctp_ifnp->ifalist); SCTP_IPI_ADDR_WLOCK(); LIST_INSERT_HEAD(hash_ifn_head, sctp_ifnp, next_bucket); LIST_INSERT_HEAD(&vrf->ifnlist, sctp_ifnp, next_ifn); atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifns), 1); new_ifn_af = 1; } sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED); if (sctp_ifap) { /* Hmm, it already exists? */ if ((sctp_ifap->ifn_p) && (sctp_ifap->ifn_p->ifn_index == ifn_index)) { SCTPDBG(SCTP_DEBUG_PCB4, "Using existing ifn %s (0x%x) for ifa %p\n", sctp_ifap->ifn_p->ifn_name, ifn_index, (void *)sctp_ifap); if (new_ifn_af) { /* Remove the created one that we don't want */ sctp_delete_ifn(sctp_ifnp, SCTP_ADDR_LOCKED); } if (sctp_ifap->localifa_flags & SCTP_BEING_DELETED) { /* easy to solve, just switch back to active */ SCTPDBG(SCTP_DEBUG_PCB4, "Clearing deleted ifa flag\n"); sctp_ifap->localifa_flags = SCTP_ADDR_VALID; sctp_ifap->ifn_p = sctp_ifnp; atomic_add_int(&sctp_ifap->ifn_p->refcount, 1); } exit_stage_left: SCTP_IPI_ADDR_WUNLOCK(); return (sctp_ifap); } else { if (sctp_ifap->ifn_p) { /* * The last IFN gets the address, remove the * old one */ SCTPDBG(SCTP_DEBUG_PCB4, "Moving ifa %p from %s (0x%x) to %s (0x%x)\n", (void *)sctp_ifap, sctp_ifap->ifn_p->ifn_name, sctp_ifap->ifn_p->ifn_index, if_name, ifn_index); /* remove the address from the old ifn */ sctp_remove_ifa_from_ifn(sctp_ifap); /* move the address over to the new ifn */ sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap); goto exit_stage_left; } else { /* repair ifnp which was NULL ? */ sctp_ifap->localifa_flags = SCTP_ADDR_VALID; SCTPDBG(SCTP_DEBUG_PCB4, "Repairing ifn %p for ifa %p\n", (void *)sctp_ifnp, (void *)sctp_ifap); sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap); } goto exit_stage_left; } } SCTP_IPI_ADDR_WUNLOCK(); SCTP_MALLOC(sctp_ifap, struct sctp_ifa *, sizeof(struct sctp_ifa), SCTP_M_IFA); if (sctp_ifap == NULL) { #ifdef INVARIANTS panic("No memory for IFA"); #endif return (NULL); } memset(sctp_ifap, 0, sizeof(struct sctp_ifa)); sctp_ifap->ifn_p = sctp_ifnp; atomic_add_int(&sctp_ifnp->refcount, 1); sctp_ifap->vrf_id = vrf_id; sctp_ifap->ifa = ifa; memcpy(&sctp_ifap->address, addr, addr->sa_len); sctp_ifap->localifa_flags = SCTP_ADDR_VALID | SCTP_ADDR_DEFER_USE; sctp_ifap->flags = ifa_flags; /* Set scope */ switch (sctp_ifap->address.sa.sa_family) { #ifdef INET case AF_INET: { struct sockaddr_in *sin; sin = &sctp_ifap->address.sin; if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) || (IN4_ISLOOPBACK_ADDRESS(&sin->sin_addr))) { sctp_ifap->src_is_loop = 1; } if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) { sctp_ifap->src_is_priv = 1; } sctp_ifnp->num_v4++; if (new_ifn_af) new_ifn_af = AF_INET; break; } #endif #ifdef INET6 case AF_INET6: { /* ok to use deprecated addresses? */ struct sockaddr_in6 *sin6; sin6 = &sctp_ifap->address.sin6; if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) || (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))) { sctp_ifap->src_is_loop = 1; } if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) { sctp_ifap->src_is_priv = 1; } sctp_ifnp->num_v6++; if (new_ifn_af) new_ifn_af = AF_INET6; break; } #endif default: new_ifn_af = 0; break; } hash_of_addr = sctp_get_ifa_hash_val(&sctp_ifap->address.sa); if ((sctp_ifap->src_is_priv == 0) && (sctp_ifap->src_is_loop == 0)) { sctp_ifap->src_is_glob = 1; } SCTP_IPI_ADDR_WLOCK(); hash_addr_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)]; LIST_INSERT_HEAD(hash_addr_head, sctp_ifap, next_bucket); sctp_ifap->refcount = 1; LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa); sctp_ifnp->ifa_count++; vrf->total_ifa_count++; atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifas), 1); if (new_ifn_af) { SCTP_REGISTER_INTERFACE(ifn_index, new_ifn_af); sctp_ifnp->registered_af = new_ifn_af; } SCTP_IPI_ADDR_WUNLOCK(); if (dynamic_add) { /* * Bump up the refcount so that when the timer completes it * will drop back down. */ struct sctp_laddr *wi; atomic_add_int(&sctp_ifap->refcount, 1); wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr); if (wi == NULL) { /* * Gak, what can we do? We have lost an address * change can you say HOSED? */ SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n"); /* Opps, must decrement the count */ sctp_del_addr_from_vrf(vrf_id, addr, ifn_index, if_name); return (NULL); } SCTP_INCR_LADDR_COUNT(); bzero(wi, sizeof(*wi)); (void)SCTP_GETTIME_TIMEVAL(&wi->start_time); wi->ifa = sctp_ifap; wi->action = SCTP_ADD_IP_ADDRESS; SCTP_WQ_ADDR_LOCK(); LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr); SCTP_WQ_ADDR_UNLOCK(); sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ, (struct sctp_inpcb *)NULL, (struct sctp_tcb *)NULL, (struct sctp_nets *)NULL); } else { /* it's ready for use */ sctp_ifap->localifa_flags &= ~SCTP_ADDR_DEFER_USE; } return (sctp_ifap); } void sctp_del_addr_from_vrf(uint32_t vrf_id, struct sockaddr *addr, uint32_t ifn_index, const char *if_name) { struct sctp_vrf *vrf; struct sctp_ifa *sctp_ifap = NULL; SCTP_IPI_ADDR_WLOCK(); vrf = sctp_find_vrf(vrf_id); if (vrf == NULL) { SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id); goto out_now; } #ifdef SCTP_DEBUG SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: deleting address:", vrf_id); SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr); #endif sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED); if (sctp_ifap) { /* Validate the delete */ if (sctp_ifap->ifn_p) { int valid = 0; /*- * The name has priority over the ifn_index * if its given. We do this especially for * panda who might recycle indexes fast. */ if (if_name) { if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) == 0) { /* They match its a correct delete */ valid = 1; } } if (!valid) { /* last ditch check ifn_index */ if (ifn_index == sctp_ifap->ifn_p->ifn_index) { valid = 1; } } if (!valid) { SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s does not match addresses\n", ifn_index, ((if_name == NULL) ? "NULL" : if_name)); SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s - ignoring delete\n", sctp_ifap->ifn_p->ifn_index, sctp_ifap->ifn_p->ifn_name); SCTP_IPI_ADDR_WUNLOCK(); return; } } SCTPDBG(SCTP_DEBUG_PCB4, "Deleting ifa %p\n", (void *)sctp_ifap); sctp_ifap->localifa_flags &= SCTP_ADDR_VALID; /* * We don't set the flag. This means that the structure will * hang around in EP's that have bound specific to it until * they close. This gives us TCP like behavior if someone * removes an address (or for that matter adds it right * back). */ /* sctp_ifap->localifa_flags |= SCTP_BEING_DELETED; */ vrf->total_ifa_count--; LIST_REMOVE(sctp_ifap, next_bucket); sctp_remove_ifa_from_ifn(sctp_ifap); } #ifdef SCTP_DEBUG else { SCTPDBG(SCTP_DEBUG_PCB4, "Del Addr-ifn:%d Could not find address:", ifn_index); SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr); } #endif out_now: SCTP_IPI_ADDR_WUNLOCK(); if (sctp_ifap) { struct sctp_laddr *wi; wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr); if (wi == NULL) { /* * Gak, what can we do? We have lost an address * change can you say HOSED? */ SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n"); /* Oops, must decrement the count */ sctp_free_ifa(sctp_ifap); return; } SCTP_INCR_LADDR_COUNT(); bzero(wi, sizeof(*wi)); (void)SCTP_GETTIME_TIMEVAL(&wi->start_time); wi->ifa = sctp_ifap; wi->action = SCTP_DEL_IP_ADDRESS; SCTP_WQ_ADDR_LOCK(); /* * Should this really be a tailq? As it is we will process * the newest first :-0 */ LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr); SCTP_WQ_ADDR_UNLOCK(); sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ, (struct sctp_inpcb *)NULL, (struct sctp_tcb *)NULL, (struct sctp_nets *)NULL); } return; } static int sctp_does_stcb_own_this_addr(struct sctp_tcb *stcb, struct sockaddr *to) { int loopback_scope; #if defined(INET) int ipv4_local_scope, ipv4_addr_legal; #endif #if defined(INET6) int local_scope, site_scope, ipv6_addr_legal; #endif struct sctp_vrf *vrf; struct sctp_ifn *sctp_ifn; struct sctp_ifa *sctp_ifa; loopback_scope = stcb->asoc.scope.loopback_scope; #if defined(INET) ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope; ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal; #endif #if defined(INET6) local_scope = stcb->asoc.scope.local_scope; site_scope = stcb->asoc.scope.site_scope; ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal; #endif SCTP_IPI_ADDR_RLOCK(); vrf = sctp_find_vrf(stcb->asoc.vrf_id); if (vrf == NULL) { /* no vrf, no addresses */ SCTP_IPI_ADDR_RUNLOCK(); return (0); } if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) { if ((loopback_scope == 0) && SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) { continue; } LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) { if (sctp_is_addr_restricted(stcb, sctp_ifa) && (!sctp_is_addr_pending(stcb, sctp_ifa))) { /* * We allow pending addresses, where * we have sent an asconf-add to be * considered valid. */ continue; } if (sctp_ifa->address.sa.sa_family != to->sa_family) { continue; } switch (sctp_ifa->address.sa.sa_family) { #ifdef INET case AF_INET: if (ipv4_addr_legal) { struct sockaddr_in *sin, *rsin; sin = &sctp_ifa->address.sin; rsin = (struct sockaddr_in *)to; if ((ipv4_local_scope == 0) && IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) { continue; } if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred, &sin->sin_addr) != 0) { continue; } if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) { SCTP_IPI_ADDR_RUNLOCK(); return (1); } } break; #endif #ifdef INET6 case AF_INET6: if (ipv6_addr_legal) { struct sockaddr_in6 *sin6, *rsin6; sin6 = &sctp_ifa->address.sin6; rsin6 = (struct sockaddr_in6 *)to; if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred, &sin6->sin6_addr) != 0) { continue; } if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) { if (local_scope == 0) continue; if (sin6->sin6_scope_id == 0) { if (sa6_recoverscope(sin6) != 0) continue; } } if ((site_scope == 0) && (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) { continue; } if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) { SCTP_IPI_ADDR_RUNLOCK(); return (1); } } break; #endif default: /* TSNH */ break; } } } } else { struct sctp_laddr *laddr; LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) { if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) { SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n"); continue; } if (sctp_is_addr_restricted(stcb, laddr->ifa) && (!sctp_is_addr_pending(stcb, laddr->ifa))) { /* * We allow pending addresses, where we have * sent an asconf-add to be considered * valid. */ continue; } if (laddr->ifa->address.sa.sa_family != to->sa_family) { continue; } switch (to->sa_family) { #ifdef INET case AF_INET: { struct sockaddr_in *sin, *rsin; sin = &laddr->ifa->address.sin; rsin = (struct sockaddr_in *)to; if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) { SCTP_IPI_ADDR_RUNLOCK(); return (1); } break; } #endif #ifdef INET6 case AF_INET6: { struct sockaddr_in6 *sin6, *rsin6; sin6 = &laddr->ifa->address.sin6; rsin6 = (struct sockaddr_in6 *)to; if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) { SCTP_IPI_ADDR_RUNLOCK(); return (1); } break; } #endif default: /* TSNH */ break; } } } SCTP_IPI_ADDR_RUNLOCK(); return (0); } static struct sctp_tcb * sctp_tcb_special_locate(struct sctp_inpcb **inp_p, struct sockaddr *from, struct sockaddr *to, struct sctp_nets **netp, uint32_t vrf_id) { /**** ASSUMES THE CALLER holds the INP_INFO_RLOCK */ /* * If we support the TCP model, then we must now dig through to see * if we can find our endpoint in the list of tcp ep's. */ uint16_t lport, rport; struct sctppcbhead *ephead; struct sctp_inpcb *inp; struct sctp_laddr *laddr; struct sctp_tcb *stcb; struct sctp_nets *net; if ((to == NULL) || (from == NULL)) { return (NULL); } switch (to->sa_family) { #ifdef INET case AF_INET: if (from->sa_family == AF_INET) { lport = ((struct sockaddr_in *)to)->sin_port; rport = ((struct sockaddr_in *)from)->sin_port; } else { return (NULL); } break; #endif #ifdef INET6 case AF_INET6: if (from->sa_family == AF_INET6) { lport = ((struct sockaddr_in6 *)to)->sin6_port; rport = ((struct sockaddr_in6 *)from)->sin6_port; } else { return (NULL); } break; #endif default: return (NULL); } ephead = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))]; /* * Ok now for each of the guys in this bucket we must look and see: * - Does the remote port match. - Does there single association's * addresses match this address (to). If so we update p_ep to point * to this ep and return the tcb from it. */ LIST_FOREACH(inp, ephead, sctp_hash) { SCTP_INP_RLOCK(inp); if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) { SCTP_INP_RUNLOCK(inp); continue; } if (lport != inp->sctp_lport) { SCTP_INP_RUNLOCK(inp); continue; } switch (to->sa_family) { #ifdef INET case AF_INET: { struct sockaddr_in *sin; sin = (struct sockaddr_in *)to; if (prison_check_ip4(inp->ip_inp.inp.inp_cred, &sin->sin_addr) != 0) { SCTP_INP_RUNLOCK(inp); continue; } break; } #endif #ifdef INET6 case AF_INET6: { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)to; if (prison_check_ip6(inp->ip_inp.inp.inp_cred, &sin6->sin6_addr) != 0) { SCTP_INP_RUNLOCK(inp); continue; } break; } #endif default: SCTP_INP_RUNLOCK(inp); continue; } if (inp->def_vrf_id != vrf_id) { SCTP_INP_RUNLOCK(inp); continue; } /* check to see if the ep has one of the addresses */ if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) { /* We are NOT bound all, so look further */ int match = 0; LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { if (laddr->ifa == NULL) { SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n", __func__); continue; } if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) { SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n"); continue; } if (laddr->ifa->address.sa.sa_family == to->sa_family) { /* see if it matches */ #ifdef INET if (from->sa_family == AF_INET) { struct sockaddr_in *intf_addr, *sin; intf_addr = &laddr->ifa->address.sin; sin = (struct sockaddr_in *)to; if (sin->sin_addr.s_addr == intf_addr->sin_addr.s_addr) { match = 1; break; } } #endif #ifdef INET6 if (from->sa_family == AF_INET6) { struct sockaddr_in6 *intf_addr6; struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *) to; intf_addr6 = &laddr->ifa->address.sin6; if (SCTP6_ARE_ADDR_EQUAL(sin6, intf_addr6)) { match = 1; break; } } #endif } } if (match == 0) { /* This endpoint does not have this address */ SCTP_INP_RUNLOCK(inp); continue; } } /* * Ok if we hit here the ep has the address, does it hold * the tcb? */ /* XXX: Why don't we TAILQ_FOREACH through sctp_asoc_list? */ stcb = LIST_FIRST(&inp->sctp_asoc_list); if (stcb == NULL) { SCTP_INP_RUNLOCK(inp); continue; } SCTP_TCB_LOCK(stcb); if (!sctp_does_stcb_own_this_addr(stcb, to)) { SCTP_TCB_UNLOCK(stcb); SCTP_INP_RUNLOCK(inp); continue; } if (stcb->rport != rport) { /* remote port does not match. */ SCTP_TCB_UNLOCK(stcb); SCTP_INP_RUNLOCK(inp); continue; } if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { SCTP_TCB_UNLOCK(stcb); SCTP_INP_RUNLOCK(inp); continue; } if (!sctp_does_stcb_own_this_addr(stcb, to)) { SCTP_TCB_UNLOCK(stcb); SCTP_INP_RUNLOCK(inp); continue; } /* Does this TCB have a matching address? */ TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { if (net->ro._l_addr.sa.sa_family != from->sa_family) { /* not the same family, can't be a match */ continue; } switch (from->sa_family) { #ifdef INET case AF_INET: { struct sockaddr_in *sin, *rsin; sin = (struct sockaddr_in *)&net->ro._l_addr; rsin = (struct sockaddr_in *)from; if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) { /* found it */ if (netp != NULL) { *netp = net; } /* * Update the endpoint * pointer */ *inp_p = inp; SCTP_INP_RUNLOCK(inp); return (stcb); } break; } #endif #ifdef INET6 case AF_INET6: { struct sockaddr_in6 *sin6, *rsin6; sin6 = (struct sockaddr_in6 *)&net->ro._l_addr; rsin6 = (struct sockaddr_in6 *)from; if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) { /* found it */ if (netp != NULL) { *netp = net; } /* * Update the endpoint * pointer */ *inp_p = inp; SCTP_INP_RUNLOCK(inp); return (stcb); } break; } #endif default: /* TSNH */ break; } } SCTP_TCB_UNLOCK(stcb); SCTP_INP_RUNLOCK(inp); } return (NULL); } /* * rules for use * * 1) If I return a NULL you must decrement any INP ref cnt. 2) If I find an * stcb, both will be locked (locked_tcb and stcb) but decrement will be done * (if locked == NULL). 3) Decrement happens on return ONLY if locked == * NULL. */ struct sctp_tcb * sctp_findassociation_ep_addr(struct sctp_inpcb **inp_p, struct sockaddr *remote, struct sctp_nets **netp, struct sockaddr *local, struct sctp_tcb *locked_tcb) { struct sctpasochead *head; struct sctp_inpcb *inp; struct sctp_tcb *stcb = NULL; struct sctp_nets *net; uint16_t rport; inp = *inp_p; switch (remote->sa_family) { #ifdef INET case AF_INET: rport = (((struct sockaddr_in *)remote)->sin_port); break; #endif #ifdef INET6 case AF_INET6: rport = (((struct sockaddr_in6 *)remote)->sin6_port); break; #endif default: return (NULL); } if (locked_tcb) { /* * UN-lock so we can do proper locking here this occurs when * called from load_addresses_from_init. */ atomic_add_int(&locked_tcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(locked_tcb); } SCTP_INP_INFO_RLOCK(); if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { /*- * Now either this guy is our listener or it's the * connector. If it is the one that issued the connect, then * it's only chance is to be the first TCB in the list. If * it is the acceptor, then do the special_lookup to hash * and find the real inp. */ if ((inp->sctp_socket) && (inp->sctp_socket->so_qlimit)) { /* to is peer addr, from is my addr */ stcb = sctp_tcb_special_locate(inp_p, remote, local, netp, inp->def_vrf_id); if ((stcb != NULL) && (locked_tcb == NULL)) { /* we have a locked tcb, lower refcount */ SCTP_INP_DECR_REF(inp); } if ((locked_tcb != NULL) && (locked_tcb != stcb)) { SCTP_INP_RLOCK(locked_tcb->sctp_ep); SCTP_TCB_LOCK(locked_tcb); atomic_subtract_int(&locked_tcb->asoc.refcnt, 1); SCTP_INP_RUNLOCK(locked_tcb->sctp_ep); } SCTP_INP_INFO_RUNLOCK(); return (stcb); } else { SCTP_INP_WLOCK(inp); if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) { goto null_return; } stcb = LIST_FIRST(&inp->sctp_asoc_list); if (stcb == NULL) { goto null_return; } SCTP_TCB_LOCK(stcb); if (stcb->rport != rport) { /* remote port does not match. */ SCTP_TCB_UNLOCK(stcb); goto null_return; } if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { SCTP_TCB_UNLOCK(stcb); goto null_return; } if (local && !sctp_does_stcb_own_this_addr(stcb, local)) { SCTP_TCB_UNLOCK(stcb); goto null_return; } /* now look at the list of remote addresses */ TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { #ifdef INVARIANTS if (net == (TAILQ_NEXT(net, sctp_next))) { panic("Corrupt net list"); } #endif if (net->ro._l_addr.sa.sa_family != remote->sa_family) { /* not the same family */ continue; } switch (remote->sa_family) { #ifdef INET case AF_INET: { struct sockaddr_in *sin, *rsin; sin = (struct sockaddr_in *) &net->ro._l_addr; rsin = (struct sockaddr_in *)remote; if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) { /* found it */ if (netp != NULL) { *netp = net; } if (locked_tcb == NULL) { SCTP_INP_DECR_REF(inp); } else if (locked_tcb != stcb) { SCTP_TCB_LOCK(locked_tcb); } if (locked_tcb) { atomic_subtract_int(&locked_tcb->asoc.refcnt, 1); } SCTP_INP_WUNLOCK(inp); SCTP_INP_INFO_RUNLOCK(); return (stcb); } break; } #endif #ifdef INET6 case AF_INET6: { struct sockaddr_in6 *sin6, *rsin6; sin6 = (struct sockaddr_in6 *)&net->ro._l_addr; rsin6 = (struct sockaddr_in6 *)remote; if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) { /* found it */ if (netp != NULL) { *netp = net; } if (locked_tcb == NULL) { SCTP_INP_DECR_REF(inp); } else if (locked_tcb != stcb) { SCTP_TCB_LOCK(locked_tcb); } if (locked_tcb) { atomic_subtract_int(&locked_tcb->asoc.refcnt, 1); } SCTP_INP_WUNLOCK(inp); SCTP_INP_INFO_RUNLOCK(); return (stcb); } break; } #endif default: /* TSNH */ break; } } SCTP_TCB_UNLOCK(stcb); } } else { SCTP_INP_WLOCK(inp); if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) { goto null_return; } head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(rport, inp->sctp_hashmark)]; LIST_FOREACH(stcb, head, sctp_tcbhash) { if (stcb->rport != rport) { /* remote port does not match */ continue; } SCTP_TCB_LOCK(stcb); if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { SCTP_TCB_UNLOCK(stcb); continue; } if (local && !sctp_does_stcb_own_this_addr(stcb, local)) { SCTP_TCB_UNLOCK(stcb); continue; } /* now look at the list of remote addresses */ TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { #ifdef INVARIANTS if (net == (TAILQ_NEXT(net, sctp_next))) { panic("Corrupt net list"); } #endif if (net->ro._l_addr.sa.sa_family != remote->sa_family) { /* not the same family */ continue; } switch (remote->sa_family) { #ifdef INET case AF_INET: { struct sockaddr_in *sin, *rsin; sin = (struct sockaddr_in *) &net->ro._l_addr; rsin = (struct sockaddr_in *)remote; if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) { /* found it */ if (netp != NULL) { *netp = net; } if (locked_tcb == NULL) { SCTP_INP_DECR_REF(inp); } else if (locked_tcb != stcb) { SCTP_TCB_LOCK(locked_tcb); } if (locked_tcb) { atomic_subtract_int(&locked_tcb->asoc.refcnt, 1); } SCTP_INP_WUNLOCK(inp); SCTP_INP_INFO_RUNLOCK(); return (stcb); } break; } #endif #ifdef INET6 case AF_INET6: { struct sockaddr_in6 *sin6, *rsin6; sin6 = (struct sockaddr_in6 *) &net->ro._l_addr; rsin6 = (struct sockaddr_in6 *)remote; if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) { /* found it */ if (netp != NULL) { *netp = net; } if (locked_tcb == NULL) { SCTP_INP_DECR_REF(inp); } else if (locked_tcb != stcb) { SCTP_TCB_LOCK(locked_tcb); } if (locked_tcb) { atomic_subtract_int(&locked_tcb->asoc.refcnt, 1); } SCTP_INP_WUNLOCK(inp); SCTP_INP_INFO_RUNLOCK(); return (stcb); } break; } #endif default: /* TSNH */ break; } } SCTP_TCB_UNLOCK(stcb); } } null_return: /* clean up for returning null */ if (locked_tcb) { SCTP_TCB_LOCK(locked_tcb); atomic_subtract_int(&locked_tcb->asoc.refcnt, 1); } SCTP_INP_WUNLOCK(inp); SCTP_INP_INFO_RUNLOCK(); /* not found */ return (NULL); } /* * Find an association for a specific endpoint using the association id given * out in the COMM_UP notification */ struct sctp_tcb * sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock) { /* * Use my the assoc_id to find a endpoint */ struct sctpasochead *head; struct sctp_tcb *stcb; uint32_t id; if (inp == NULL) { SCTP_PRINTF("TSNH ep_associd\n"); return (NULL); } if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) { SCTP_PRINTF("TSNH ep_associd0\n"); return (NULL); } id = (uint32_t) asoc_id; head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)]; if (head == NULL) { /* invalid id TSNH */ SCTP_PRINTF("TSNH ep_associd1\n"); return (NULL); } LIST_FOREACH(stcb, head, sctp_tcbasocidhash) { if (stcb->asoc.assoc_id == id) { if (inp != stcb->sctp_ep) { /* * some other guy has the same id active (id * collision ??). */ SCTP_PRINTF("TSNH ep_associd2\n"); continue; } if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { continue; } if (want_lock) { SCTP_TCB_LOCK(stcb); } return (stcb); } } return (NULL); } struct sctp_tcb * sctp_findassociation_ep_asocid(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock) { struct sctp_tcb *stcb; SCTP_INP_RLOCK(inp); stcb = sctp_findasoc_ep_asocid_locked(inp, asoc_id, want_lock); SCTP_INP_RUNLOCK(inp); return (stcb); } /* * Endpoint probe expects that the INP_INFO is locked. */ static struct sctp_inpcb * sctp_endpoint_probe(struct sockaddr *nam, struct sctppcbhead *head, uint16_t lport, uint32_t vrf_id) { struct sctp_inpcb *inp; struct sctp_laddr *laddr; #ifdef INET struct sockaddr_in *sin; #endif #ifdef INET6 struct sockaddr_in6 *sin6; struct sockaddr_in6 *intf_addr6; #endif int fnd; #ifdef INET sin = NULL; #endif #ifdef INET6 sin6 = NULL; #endif switch (nam->sa_family) { #ifdef INET case AF_INET: sin = (struct sockaddr_in *)nam; break; #endif #ifdef INET6 case AF_INET6: sin6 = (struct sockaddr_in6 *)nam; break; #endif default: /* unsupported family */ return (NULL); } if (head == NULL) return (NULL); LIST_FOREACH(inp, head, sctp_hash) { SCTP_INP_RLOCK(inp); if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) { SCTP_INP_RUNLOCK(inp); continue; } if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) && (inp->sctp_lport == lport)) { /* got it */ switch (nam->sa_family) { #ifdef INET case AF_INET: if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && SCTP_IPV6_V6ONLY(inp)) { /* * IPv4 on a IPv6 socket with ONLY * IPv6 set */ SCTP_INP_RUNLOCK(inp); continue; } if (prison_check_ip4(inp->ip_inp.inp.inp_cred, &sin->sin_addr) != 0) { SCTP_INP_RUNLOCK(inp); continue; } break; #endif #ifdef INET6 case AF_INET6: /* * A V6 address and the endpoint is NOT * bound V6 */ if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) { SCTP_INP_RUNLOCK(inp); continue; } if (prison_check_ip6(inp->ip_inp.inp.inp_cred, &sin6->sin6_addr) != 0) { SCTP_INP_RUNLOCK(inp); continue; } break; #endif default: break; } /* does a VRF id match? */ fnd = 0; if (inp->def_vrf_id == vrf_id) fnd = 1; SCTP_INP_RUNLOCK(inp); if (!fnd) continue; return (inp); } SCTP_INP_RUNLOCK(inp); } switch (nam->sa_family) { #ifdef INET case AF_INET: if (sin->sin_addr.s_addr == INADDR_ANY) { /* Can't hunt for one that has no address specified */ return (NULL); } break; #endif #ifdef INET6 case AF_INET6: if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { /* Can't hunt for one that has no address specified */ return (NULL); } break; #endif default: break; } /* * ok, not bound to all so see if we can find a EP bound to this * address. */ LIST_FOREACH(inp, head, sctp_hash) { SCTP_INP_RLOCK(inp); if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) { SCTP_INP_RUNLOCK(inp); continue; } if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) { SCTP_INP_RUNLOCK(inp); continue; } /* * Ok this could be a likely candidate, look at all of its * addresses */ if (inp->sctp_lport != lport) { SCTP_INP_RUNLOCK(inp); continue; } /* does a VRF id match? */ fnd = 0; if (inp->def_vrf_id == vrf_id) fnd = 1; if (!fnd) { SCTP_INP_RUNLOCK(inp); continue; } LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { if (laddr->ifa == NULL) { SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n", __func__); continue; } SCTPDBG(SCTP_DEBUG_PCB1, "Ok laddr->ifa:%p is possible, ", (void *)laddr->ifa); if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) { SCTPDBG(SCTP_DEBUG_PCB1, "Huh IFA being deleted\n"); continue; } if (laddr->ifa->address.sa.sa_family == nam->sa_family) { /* possible, see if it matches */ switch (nam->sa_family) { #ifdef INET case AF_INET: if (sin->sin_addr.s_addr == laddr->ifa->address.sin.sin_addr.s_addr) { SCTP_INP_RUNLOCK(inp); return (inp); } break; #endif #ifdef INET6 case AF_INET6: intf_addr6 = &laddr->ifa->address.sin6; if (SCTP6_ARE_ADDR_EQUAL(sin6, intf_addr6)) { SCTP_INP_RUNLOCK(inp); return (inp); } break; #endif } } } SCTP_INP_RUNLOCK(inp); } return (NULL); } static struct sctp_inpcb * sctp_isport_inuse(struct sctp_inpcb *inp, uint16_t lport, uint32_t vrf_id) { struct sctppcbhead *head; struct sctp_inpcb *t_inp; int fnd; head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashmark))]; LIST_FOREACH(t_inp, head, sctp_hash) { if (t_inp->sctp_lport != lport) { continue; } /* is it in the VRF in question */ fnd = 0; if (t_inp->def_vrf_id == vrf_id) fnd = 1; if (!fnd) continue; /* This one is in use. */ /* check the v6/v4 binding issue */ if ((t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && SCTP_IPV6_V6ONLY(t_inp)) { if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { /* collision in V6 space */ return (t_inp); } else { /* inp is BOUND_V4 no conflict */ continue; } } else if (t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { /* t_inp is bound v4 and v6, conflict always */ return (t_inp); } else { /* t_inp is bound only V4 */ if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && SCTP_IPV6_V6ONLY(inp)) { /* no conflict */ continue; } /* else fall through to conflict */ } return (t_inp); } return (NULL); } int sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp) { /* For 1-2-1 with port reuse */ struct sctppcbhead *head; struct sctp_inpcb *tinp, *ninp; if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) { /* only works with port reuse on */ return (-1); } if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) { return (0); } SCTP_INP_RUNLOCK(inp); SCTP_INP_INFO_WLOCK(); head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport, SCTP_BASE_INFO(hashmark))]; /* Kick out all non-listeners to the TCP hash */ LIST_FOREACH_SAFE(tinp, head, sctp_hash, ninp) { if (tinp->sctp_lport != inp->sctp_lport) { continue; } if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) { continue; } if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { continue; } if (tinp->sctp_socket->so_qlimit) { continue; } SCTP_INP_WLOCK(tinp); LIST_REMOVE(tinp, sctp_hash); head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(tinp->sctp_lport, SCTP_BASE_INFO(hashtcpmark))]; tinp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL; LIST_INSERT_HEAD(head, tinp, sctp_hash); SCTP_INP_WUNLOCK(tinp); } SCTP_INP_WLOCK(inp); /* Pull from where he was */ LIST_REMOVE(inp, sctp_hash); inp->sctp_flags &= ~SCTP_PCB_FLAGS_IN_TCPPOOL; head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport, SCTP_BASE_INFO(hashmark))]; LIST_INSERT_HEAD(head, inp, sctp_hash); SCTP_INP_WUNLOCK(inp); SCTP_INP_RLOCK(inp); SCTP_INP_INFO_WUNLOCK(); return (0); } struct sctp_inpcb * sctp_pcb_findep(struct sockaddr *nam, int find_tcp_pool, int have_lock, uint32_t vrf_id) { /* * First we check the hash table to see if someone has this port * bound with just the port. */ struct sctp_inpcb *inp; struct sctppcbhead *head; int lport; unsigned int i; #ifdef INET struct sockaddr_in *sin; #endif #ifdef INET6 struct sockaddr_in6 *sin6; #endif switch (nam->sa_family) { #ifdef INET case AF_INET: sin = (struct sockaddr_in *)nam; lport = sin->sin_port; break; #endif #ifdef INET6 case AF_INET6: sin6 = (struct sockaddr_in6 *)nam; lport = sin6->sin6_port; break; #endif default: return (NULL); } /* * I could cheat here and just cast to one of the types but we will * do it right. It also provides the check against an Unsupported * type too. */ /* Find the head of the ALLADDR chain */ if (have_lock == 0) { SCTP_INP_INFO_RLOCK(); } head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashmark))]; inp = sctp_endpoint_probe(nam, head, lport, vrf_id); /* * If the TCP model exists it could be that the main listening * endpoint is gone but there still exists a connected socket for * this guy. If so we can return the first one that we find. This * may NOT be the correct one so the caller should be wary on the * returned INP. Currently the only caller that sets find_tcp_pool * is in bindx where we are verifying that a user CAN bind the * address. He either has bound it already, or someone else has, or * its open to bind, so this is good enough. */ if (inp == NULL && find_tcp_pool) { for (i = 0; i < SCTP_BASE_INFO(hashtcpmark) + 1; i++) { head = &SCTP_BASE_INFO(sctp_tcpephash)[i]; inp = sctp_endpoint_probe(nam, head, lport, vrf_id); if (inp) { break; } } } if (inp) { SCTP_INP_INCR_REF(inp); } if (have_lock == 0) { SCTP_INP_INFO_RUNLOCK(); } return (inp); } /* * Find an association for an endpoint with the pointer to whom you want to * send to and the endpoint pointer. The address can be IPv4 or IPv6. We may * need to change the *to to some other struct like a mbuf... */ struct sctp_tcb * sctp_findassociation_addr_sa(struct sockaddr *from, struct sockaddr *to, struct sctp_inpcb **inp_p, struct sctp_nets **netp, int find_tcp_pool, uint32_t vrf_id) { struct sctp_inpcb *inp = NULL; struct sctp_tcb *stcb; SCTP_INP_INFO_RLOCK(); if (find_tcp_pool) { if (inp_p != NULL) { stcb = sctp_tcb_special_locate(inp_p, from, to, netp, vrf_id); } else { stcb = sctp_tcb_special_locate(&inp, from, to, netp, vrf_id); } if (stcb != NULL) { SCTP_INP_INFO_RUNLOCK(); return (stcb); } } inp = sctp_pcb_findep(to, 0, 1, vrf_id); if (inp_p != NULL) { *inp_p = inp; } SCTP_INP_INFO_RUNLOCK(); if (inp == NULL) { return (NULL); } /* * ok, we have an endpoint, now lets find the assoc for it (if any) * we now place the source address or from in the to of the find * endpoint call. Since in reality this chain is used from the * inbound packet side. */ if (inp_p != NULL) { stcb = sctp_findassociation_ep_addr(inp_p, from, netp, to, NULL); } else { stcb = sctp_findassociation_ep_addr(&inp, from, netp, to, NULL); } return (stcb); } /* * This routine will grub through the mbuf that is a INIT or INIT-ACK and * find all addresses that the sender has specified in any address list. Each * address will be used to lookup the TCB and see if one exits. */ static struct sctp_tcb * sctp_findassociation_special_addr(struct mbuf *m, int offset, struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp, struct sockaddr *dst) { struct sctp_paramhdr *phdr, parm_buf; #if defined(INET) || defined(INET6) struct sctp_tcb *stcb; uint16_t ptype; #endif uint16_t plen; #ifdef INET struct sockaddr_in sin4; #endif #ifdef INET6 struct sockaddr_in6 sin6; #endif #ifdef INET memset(&sin4, 0, sizeof(sin4)); sin4.sin_len = sizeof(sin4); sin4.sin_family = AF_INET; sin4.sin_port = sh->src_port; #endif #ifdef INET6 memset(&sin6, 0, sizeof(sin6)); sin6.sin6_len = sizeof(sin6); sin6.sin6_family = AF_INET6; sin6.sin6_port = sh->src_port; #endif offset += sizeof(struct sctp_init_chunk); phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf)); while (phdr != NULL) { /* now we must see if we want the parameter */ #if defined(INET) || defined(INET6) ptype = ntohs(phdr->param_type); #endif plen = ntohs(phdr->param_length); if (plen == 0) { break; } #ifdef INET if (ptype == SCTP_IPV4_ADDRESS && plen == sizeof(struct sctp_ipv4addr_param)) { /* Get the rest of the address */ struct sctp_ipv4addr_param ip4_parm, *p4; phdr = sctp_get_next_param(m, offset, (struct sctp_paramhdr *)&ip4_parm, min(plen, sizeof(ip4_parm))); if (phdr == NULL) { return (NULL); } p4 = (struct sctp_ipv4addr_param *)phdr; memcpy(&sin4.sin_addr, &p4->addr, sizeof(p4->addr)); /* look it up */ stcb = sctp_findassociation_ep_addr(inp_p, (struct sockaddr *)&sin4, netp, dst, NULL); if (stcb != NULL) { return (stcb); } } #endif #ifdef INET6 if (ptype == SCTP_IPV6_ADDRESS && plen == sizeof(struct sctp_ipv6addr_param)) { /* Get the rest of the address */ struct sctp_ipv6addr_param ip6_parm, *p6; phdr = sctp_get_next_param(m, offset, (struct sctp_paramhdr *)&ip6_parm, min(plen, sizeof(ip6_parm))); if (phdr == NULL) { return (NULL); } p6 = (struct sctp_ipv6addr_param *)phdr; memcpy(&sin6.sin6_addr, &p6->addr, sizeof(p6->addr)); /* look it up */ stcb = sctp_findassociation_ep_addr(inp_p, (struct sockaddr *)&sin6, netp, dst, NULL); if (stcb != NULL) { return (stcb); } } #endif offset += SCTP_SIZE32(plen); phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf)); } return (NULL); } static struct sctp_tcb * sctp_findassoc_by_vtag(struct sockaddr *from, struct sockaddr *to, uint32_t vtag, struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint16_t rport, uint16_t lport, int skip_src_check, uint32_t vrf_id, uint32_t remote_tag) { /* * Use my vtag to hash. If we find it we then verify the source addr * is in the assoc. If all goes well we save a bit on rec of a * packet. */ struct sctpasochead *head; struct sctp_nets *net; struct sctp_tcb *stcb; SCTP_INP_INFO_RLOCK(); head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(vtag, SCTP_BASE_INFO(hashasocmark))]; LIST_FOREACH(stcb, head, sctp_asocs) { SCTP_INP_RLOCK(stcb->sctp_ep); if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) { SCTP_INP_RUNLOCK(stcb->sctp_ep); continue; } if (stcb->sctp_ep->def_vrf_id != vrf_id) { SCTP_INP_RUNLOCK(stcb->sctp_ep); continue; } SCTP_TCB_LOCK(stcb); SCTP_INP_RUNLOCK(stcb->sctp_ep); if (stcb->asoc.my_vtag == vtag) { /* candidate */ if (stcb->rport != rport) { SCTP_TCB_UNLOCK(stcb); continue; } if (stcb->sctp_ep->sctp_lport != lport) { SCTP_TCB_UNLOCK(stcb); continue; } if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { SCTP_TCB_UNLOCK(stcb); continue; } /* RRS:Need toaddr check here */ if (sctp_does_stcb_own_this_addr(stcb, to) == 0) { /* Endpoint does not own this address */ SCTP_TCB_UNLOCK(stcb); continue; } if (remote_tag) { /* * If we have both vtags that's all we match * on */ if (stcb->asoc.peer_vtag == remote_tag) { /* * If both tags match we consider it * conclusive and check NO * source/destination addresses */ goto conclusive; } } if (skip_src_check) { conclusive: if (from) { *netp = sctp_findnet(stcb, from); } else { *netp = NULL; /* unknown */ } if (inp_p) *inp_p = stcb->sctp_ep; SCTP_INP_INFO_RUNLOCK(); return (stcb); } net = sctp_findnet(stcb, from); if (net) { /* yep its him. */ *netp = net; SCTP_STAT_INCR(sctps_vtagexpress); *inp_p = stcb->sctp_ep; SCTP_INP_INFO_RUNLOCK(); return (stcb); } else { /* * not him, this should only happen in rare * cases so I peg it. */ SCTP_STAT_INCR(sctps_vtagbogus); } } SCTP_TCB_UNLOCK(stcb); } SCTP_INP_INFO_RUNLOCK(); return (NULL); } /* * Find an association with the pointer to the inbound IP packet. This can be * a IPv4 or IPv6 packet. */ struct sctp_tcb * sctp_findassociation_addr(struct mbuf *m, int offset, struct sockaddr *src, struct sockaddr *dst, struct sctphdr *sh, struct sctp_chunkhdr *ch, struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id) { struct sctp_tcb *stcb; struct sctp_inpcb *inp; if (sh->v_tag) { /* we only go down this path if vtag is non-zero */ stcb = sctp_findassoc_by_vtag(src, dst, ntohl(sh->v_tag), inp_p, netp, sh->src_port, sh->dest_port, 0, vrf_id, 0); if (stcb) { return (stcb); } } if (inp_p) { stcb = sctp_findassociation_addr_sa(src, dst, inp_p, netp, 1, vrf_id); inp = *inp_p; } else { stcb = sctp_findassociation_addr_sa(src, dst, &inp, netp, 1, vrf_id); } SCTPDBG(SCTP_DEBUG_PCB1, "stcb:%p inp:%p\n", (void *)stcb, (void *)inp); if (stcb == NULL && inp) { /* Found a EP but not this address */ if ((ch->chunk_type == SCTP_INITIATION) || (ch->chunk_type == SCTP_INITIATION_ACK)) { /*- * special hook, we do NOT return linp or an * association that is linked to an existing * association that is under the TCP pool (i.e. no * listener exists). The endpoint finding routine * will always find a listener before examining the * TCP pool. */ if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) { if (inp_p) { *inp_p = NULL; } return (NULL); } stcb = sctp_findassociation_special_addr(m, offset, sh, &inp, netp, dst); if (inp_p != NULL) { *inp_p = inp; } } } SCTPDBG(SCTP_DEBUG_PCB1, "stcb is %p\n", (void *)stcb); return (stcb); } /* * lookup an association by an ASCONF lookup address. * if the lookup address is 0.0.0.0 or ::0, use the vtag to do the lookup */ struct sctp_tcb * sctp_findassociation_ep_asconf(struct mbuf *m, int offset, struct sockaddr *dst, struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id) { struct sctp_tcb *stcb; union sctp_sockstore remote_store; struct sctp_paramhdr parm_buf, *phdr; int ptype; int zero_address = 0; #ifdef INET struct sockaddr_in *sin; #endif #ifdef INET6 struct sockaddr_in6 *sin6; #endif memset(&remote_store, 0, sizeof(remote_store)); phdr = sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk), &parm_buf, sizeof(struct sctp_paramhdr)); if (phdr == NULL) { SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf lookup addr\n", __func__); return NULL; } ptype = (int)((uint32_t) ntohs(phdr->param_type)); /* get the correlation address */ switch (ptype) { #ifdef INET6 case SCTP_IPV6_ADDRESS: { /* ipv6 address param */ struct sctp_ipv6addr_param *p6, p6_buf; if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv6addr_param)) { return NULL; } p6 = (struct sctp_ipv6addr_param *)sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk), &p6_buf.ph, sizeof(*p6)); if (p6 == NULL) { SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v6 lookup addr\n", __func__); return (NULL); } sin6 = &remote_store.sin6; sin6->sin6_family = AF_INET6; sin6->sin6_len = sizeof(*sin6); sin6->sin6_port = sh->src_port; memcpy(&sin6->sin6_addr, &p6->addr, sizeof(struct in6_addr)); if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) zero_address = 1; break; } #endif #ifdef INET case SCTP_IPV4_ADDRESS: { /* ipv4 address param */ struct sctp_ipv4addr_param *p4, p4_buf; if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv4addr_param)) { return NULL; } p4 = (struct sctp_ipv4addr_param *)sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk), &p4_buf.ph, sizeof(*p4)); if (p4 == NULL) { SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v4 lookup addr\n", __func__); return (NULL); } sin = &remote_store.sin; sin->sin_family = AF_INET; sin->sin_len = sizeof(*sin); sin->sin_port = sh->src_port; memcpy(&sin->sin_addr, &p4->addr, sizeof(struct in_addr)); if (sin->sin_addr.s_addr == INADDR_ANY) zero_address = 1; break; } #endif default: /* invalid address param type */ return NULL; } if (zero_address) { stcb = sctp_findassoc_by_vtag(NULL, dst, ntohl(sh->v_tag), inp_p, netp, sh->src_port, sh->dest_port, 1, vrf_id, 0); if (stcb != NULL) { SCTP_INP_DECR_REF(*inp_p); } } else { stcb = sctp_findassociation_ep_addr(inp_p, &remote_store.sa, netp, dst, NULL); } return (stcb); } /* * allocate a sctp_inpcb and setup a temporary binding to a port/all * addresses. This way if we don't get a bind we by default pick a ephemeral * port with all addresses bound. */ int sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id) { /* * we get called when a new endpoint starts up. We need to allocate * the sctp_inpcb structure from the zone and init it. Mark it as * unbound and find a port that we can use as an ephemeral with * INADDR_ANY. If the user binds later no problem we can then add in * the specific addresses. And setup the default parameters for the * EP. */ int i, error; struct sctp_inpcb *inp; struct sctp_pcb *m; struct timeval time; sctp_sharedkey_t *null_key; error = 0; SCTP_INP_INFO_WLOCK(); inp = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_ep), struct sctp_inpcb); if (inp == NULL) { SCTP_PRINTF("Out of SCTP-INPCB structures - no resources\n"); SCTP_INP_INFO_WUNLOCK(); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS); return (ENOBUFS); } /* zap it */ bzero(inp, sizeof(*inp)); /* bump generations */ /* setup socket pointers */ inp->sctp_socket = so; inp->ip_inp.inp.inp_socket = so; inp->ip_inp.inp.inp_cred = crhold(so->so_cred); #ifdef INET6 if (INP_SOCKAF(so) == AF_INET6) { if (MODULE_GLOBAL(ip6_auto_flowlabel)) { inp->ip_inp.inp.inp_flags |= IN6P_AUTOFLOWLABEL; } if (MODULE_GLOBAL(ip6_v6only)) { inp->ip_inp.inp.inp_flags |= IN6P_IPV6_V6ONLY; } } #endif inp->sctp_associd_counter = 1; inp->partial_delivery_point = SCTP_SB_LIMIT_RCV(so) >> SCTP_PARTIAL_DELIVERY_SHIFT; inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT; inp->max_cwnd = 0; inp->sctp_cmt_on_off = SCTP_BASE_SYSCTL(sctp_cmt_on_off); inp->ecn_supported = (uint8_t) SCTP_BASE_SYSCTL(sctp_ecn_enable); inp->prsctp_supported = (uint8_t) SCTP_BASE_SYSCTL(sctp_pr_enable); inp->auth_supported = (uint8_t) SCTP_BASE_SYSCTL(sctp_auth_enable); inp->asconf_supported = (uint8_t) SCTP_BASE_SYSCTL(sctp_asconf_enable); inp->reconfig_supported = (uint8_t) SCTP_BASE_SYSCTL(sctp_reconfig_enable); inp->nrsack_supported = (uint8_t) SCTP_BASE_SYSCTL(sctp_nrsack_enable); inp->pktdrop_supported = (uint8_t) SCTP_BASE_SYSCTL(sctp_pktdrop_enable); + inp->idata_supported = 0; + inp->fibnum = so->so_fibnum; /* init the small hash table we use to track asocid <-> tcb */ inp->sctp_asocidhash = SCTP_HASH_INIT(SCTP_STACK_VTAG_HASH_SIZE, &inp->hashasocidmark); if (inp->sctp_asocidhash == NULL) { crfree(inp->ip_inp.inp.inp_cred); SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp); SCTP_INP_INFO_WUNLOCK(); return (ENOBUFS); } #ifdef IPSEC error = ipsec_init_policy(so, &inp->ip_inp.inp.inp_sp); if (error != 0) { crfree(inp->ip_inp.inp.inp_cred); SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp); SCTP_INP_INFO_WUNLOCK(); return error; } #endif /* IPSEC */ SCTP_INCR_EP_COUNT(); inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl); SCTP_INP_INFO_WUNLOCK(); so->so_pcb = (caddr_t)inp; if (SCTP_SO_TYPE(so) == SOCK_SEQPACKET) { /* UDP style socket */ inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE | SCTP_PCB_FLAGS_UNBOUND); /* Be sure it is NON-BLOCKING IO for UDP */ /* SCTP_SET_SO_NBIO(so); */ } else if (SCTP_SO_TYPE(so) == SOCK_STREAM) { /* TCP style socket */ inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE | SCTP_PCB_FLAGS_UNBOUND); /* Be sure we have blocking IO by default */ SCTP_CLEAR_SO_NBIO(so); } else { /* * unsupported socket type (RAW, etc)- in case we missed it * in protosw */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EOPNOTSUPP); so->so_pcb = NULL; crfree(inp->ip_inp.inp.inp_cred); #ifdef IPSEC ipsec_delete_pcbpolicy(&inp->ip_inp.inp); #endif SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp); return (EOPNOTSUPP); } if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_1) { sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE); sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS); } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_2) { sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE); sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS); } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_0) { sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE); sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS); } inp->sctp_tcbhash = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_pcbtblsize), &inp->sctp_hashmark); if (inp->sctp_tcbhash == NULL) { SCTP_PRINTF("Out of SCTP-INPCB->hashinit - no resources\n"); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS); so->so_pcb = NULL; crfree(inp->ip_inp.inp.inp_cred); #ifdef IPSEC ipsec_delete_pcbpolicy(&inp->ip_inp.inp); #endif SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp); return (ENOBUFS); } inp->def_vrf_id = vrf_id; SCTP_INP_INFO_WLOCK(); SCTP_INP_LOCK_INIT(inp); INP_LOCK_INIT(&inp->ip_inp.inp, "inp", "sctpinp"); SCTP_INP_READ_INIT(inp); SCTP_ASOC_CREATE_LOCK_INIT(inp); /* lock the new ep */ SCTP_INP_WLOCK(inp); /* add it to the info area */ LIST_INSERT_HEAD(&SCTP_BASE_INFO(listhead), inp, sctp_list); SCTP_INP_INFO_WUNLOCK(); TAILQ_INIT(&inp->read_queue); LIST_INIT(&inp->sctp_addr_list); LIST_INIT(&inp->sctp_asoc_list); #ifdef SCTP_TRACK_FREED_ASOCS /* TEMP CODE */ LIST_INIT(&inp->sctp_asoc_free_list); #endif /* Init the timer structure for signature change */ SCTP_OS_TIMER_INIT(&inp->sctp_ep.signature_change.timer); inp->sctp_ep.signature_change.type = SCTP_TIMER_TYPE_NEWCOOKIE; /* now init the actual endpoint default data */ m = &inp->sctp_ep; /* setup the base timeout information */ m->sctp_timeoutticks[SCTP_TIMER_SEND] = SEC_TO_TICKS(SCTP_SEND_SEC); /* needed ? */ m->sctp_timeoutticks[SCTP_TIMER_INIT] = SEC_TO_TICKS(SCTP_INIT_SEC); /* needed ? */ m->sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default)); m->sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default)); m->sctp_timeoutticks[SCTP_TIMER_PMTU] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default)); m->sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default)); m->sctp_timeoutticks[SCTP_TIMER_SIGNATURE] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default)); /* all max/min max are in ms */ m->sctp_maxrto = SCTP_BASE_SYSCTL(sctp_rto_max_default); m->sctp_minrto = SCTP_BASE_SYSCTL(sctp_rto_min_default); m->initial_rto = SCTP_BASE_SYSCTL(sctp_rto_initial_default); m->initial_init_rto_max = SCTP_BASE_SYSCTL(sctp_init_rto_max_default); m->sctp_sack_freq = SCTP_BASE_SYSCTL(sctp_sack_freq_default); m->max_init_times = SCTP_BASE_SYSCTL(sctp_init_rtx_max_default); m->max_send_times = SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default); m->def_net_failure = SCTP_BASE_SYSCTL(sctp_path_rtx_max_default); m->def_net_pf_threshold = SCTP_BASE_SYSCTL(sctp_path_pf_threshold); m->sctp_sws_sender = SCTP_SWS_SENDER_DEF; m->sctp_sws_receiver = SCTP_SWS_RECEIVER_DEF; m->max_burst = SCTP_BASE_SYSCTL(sctp_max_burst_default); m->fr_max_burst = SCTP_BASE_SYSCTL(sctp_fr_max_burst_default); m->sctp_default_cc_module = SCTP_BASE_SYSCTL(sctp_default_cc_module); m->sctp_default_ss_module = SCTP_BASE_SYSCTL(sctp_default_ss_module); m->max_open_streams_intome = SCTP_BASE_SYSCTL(sctp_nr_incoming_streams_default); /* number of streams to pre-open on a association */ m->pre_open_stream_count = SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default); /* Add adaptation cookie */ m->adaptation_layer_indicator = 0; m->adaptation_layer_indicator_provided = 0; /* seed random number generator */ m->random_counter = 1; m->store_at = SCTP_SIGNATURE_SIZE; SCTP_READ_RANDOM(m->random_numbers, sizeof(m->random_numbers)); sctp_fill_random_store(m); /* Minimum cookie size */ m->size_of_a_cookie = (sizeof(struct sctp_init_msg) * 2) + sizeof(struct sctp_state_cookie); m->size_of_a_cookie += SCTP_SIGNATURE_SIZE; /* Setup the initial secret */ (void)SCTP_GETTIME_TIMEVAL(&time); m->time_of_secret_change = time.tv_sec; for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) { m->secret_key[0][i] = sctp_select_initial_TSN(m); } sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL); /* How long is a cookie good for ? */ m->def_cookie_life = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default)); /* * Initialize authentication parameters */ m->local_hmacs = sctp_default_supported_hmaclist(); m->local_auth_chunks = sctp_alloc_chunklist(); if (inp->asconf_supported) { sctp_auth_add_chunk(SCTP_ASCONF, m->local_auth_chunks); sctp_auth_add_chunk(SCTP_ASCONF_ACK, m->local_auth_chunks); } m->default_dscp = 0; #ifdef INET6 m->default_flowlabel = 0; #endif m->port = 0; /* encapsulation disabled by default */ LIST_INIT(&m->shared_keys); /* add default NULL key as key id 0 */ null_key = sctp_alloc_sharedkey(); sctp_insert_sharedkey(&m->shared_keys, null_key); SCTP_INP_WUNLOCK(inp); #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, NULL, 12); #endif return (error); } void sctp_move_pcb_and_assoc(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp, struct sctp_tcb *stcb) { struct sctp_nets *net; uint16_t lport, rport; struct sctppcbhead *head; struct sctp_laddr *laddr, *oladdr; atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_INP_INFO_WLOCK(); SCTP_INP_WLOCK(old_inp); SCTP_INP_WLOCK(new_inp); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); new_inp->sctp_ep.time_of_secret_change = old_inp->sctp_ep.time_of_secret_change; memcpy(new_inp->sctp_ep.secret_key, old_inp->sctp_ep.secret_key, sizeof(old_inp->sctp_ep.secret_key)); new_inp->sctp_ep.current_secret_number = old_inp->sctp_ep.current_secret_number; new_inp->sctp_ep.last_secret_number = old_inp->sctp_ep.last_secret_number; new_inp->sctp_ep.size_of_a_cookie = old_inp->sctp_ep.size_of_a_cookie; /* make it so new data pours into the new socket */ stcb->sctp_socket = new_inp->sctp_socket; stcb->sctp_ep = new_inp; /* Copy the port across */ lport = new_inp->sctp_lport = old_inp->sctp_lport; rport = stcb->rport; /* Pull the tcb from the old association */ LIST_REMOVE(stcb, sctp_tcbhash); LIST_REMOVE(stcb, sctp_tcblist); if (stcb->asoc.in_asocid_hash) { LIST_REMOVE(stcb, sctp_tcbasocidhash); } /* Now insert the new_inp into the TCP connected hash */ head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))]; LIST_INSERT_HEAD(head, new_inp, sctp_hash); /* Its safe to access */ new_inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND; /* Now move the tcb into the endpoint list */ LIST_INSERT_HEAD(&new_inp->sctp_asoc_list, stcb, sctp_tcblist); /* * Question, do we even need to worry about the ep-hash since we * only have one connection? Probably not :> so lets get rid of it * and not suck up any kernel memory in that. */ if (stcb->asoc.in_asocid_hash) { struct sctpasochead *lhd; lhd = &new_inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(stcb->asoc.assoc_id, new_inp->hashasocidmark)]; LIST_INSERT_HEAD(lhd, stcb, sctp_tcbasocidhash); } /* Ok. Let's restart timer. */ TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, new_inp, stcb, net); } SCTP_INP_INFO_WUNLOCK(); if (new_inp->sctp_tcbhash != NULL) { SCTP_HASH_FREE(new_inp->sctp_tcbhash, new_inp->sctp_hashmark); new_inp->sctp_tcbhash = NULL; } if ((new_inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) { /* Subset bound, so copy in the laddr list from the old_inp */ LIST_FOREACH(oladdr, &old_inp->sctp_addr_list, sctp_nxt_addr) { laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr); if (laddr == NULL) { /* * Gak, what can we do? This assoc is really * HOSED. We probably should send an abort * here. */ SCTPDBG(SCTP_DEBUG_PCB1, "Association hosed in TCP model, out of laddr memory\n"); continue; } SCTP_INCR_LADDR_COUNT(); bzero(laddr, sizeof(*laddr)); (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time); laddr->ifa = oladdr->ifa; atomic_add_int(&laddr->ifa->refcount, 1); LIST_INSERT_HEAD(&new_inp->sctp_addr_list, laddr, sctp_nxt_addr); new_inp->laddr_count++; if (oladdr == stcb->asoc.last_used_address) { stcb->asoc.last_used_address = laddr; } } } /* * Now any running timers need to be adjusted since we really don't * care if they are running or not just blast in the new_inp into * all of them. */ stcb->asoc.dack_timer.ep = (void *)new_inp; stcb->asoc.asconf_timer.ep = (void *)new_inp; stcb->asoc.strreset_timer.ep = (void *)new_inp; stcb->asoc.shut_guard_timer.ep = (void *)new_inp; stcb->asoc.autoclose_timer.ep = (void *)new_inp; stcb->asoc.delayed_event_timer.ep = (void *)new_inp; stcb->asoc.delete_prim_timer.ep = (void *)new_inp; /* now what about the nets? */ TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { net->pmtu_timer.ep = (void *)new_inp; net->hb_timer.ep = (void *)new_inp; net->rxt_timer.ep = (void *)new_inp; } SCTP_INP_WUNLOCK(new_inp); SCTP_INP_WUNLOCK(old_inp); } /* * insert an laddr entry with the given ifa for the desired list */ static int sctp_insert_laddr(struct sctpladdr *list, struct sctp_ifa *ifa, uint32_t act) { struct sctp_laddr *laddr; laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr); if (laddr == NULL) { /* out of memory? */ SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL); return (EINVAL); } SCTP_INCR_LADDR_COUNT(); bzero(laddr, sizeof(*laddr)); (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time); laddr->ifa = ifa; laddr->action = act; atomic_add_int(&ifa->refcount, 1); /* insert it */ LIST_INSERT_HEAD(list, laddr, sctp_nxt_addr); return (0); } /* * Remove an laddr entry from the local address list (on an assoc) */ static void sctp_remove_laddr(struct sctp_laddr *laddr) { /* remove from the list */ LIST_REMOVE(laddr, sctp_nxt_addr); sctp_free_ifa(laddr->ifa); SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), laddr); SCTP_DECR_LADDR_COUNT(); } /* sctp_ifap is used to bypass normal local address validation checks */ int sctp_inpcb_bind(struct socket *so, struct sockaddr *addr, struct sctp_ifa *sctp_ifap, struct thread *p) { /* bind a ep to a socket address */ struct sctppcbhead *head; struct sctp_inpcb *inp, *inp_tmp; struct inpcb *ip_inp; int port_reuse_active = 0; int bindall; uint16_t lport; int error; uint32_t vrf_id; lport = 0; bindall = 1; inp = (struct sctp_inpcb *)so->so_pcb; ip_inp = (struct inpcb *)so->so_pcb; #ifdef SCTP_DEBUG if (addr) { SCTPDBG(SCTP_DEBUG_PCB1, "Bind called port: %d\n", ntohs(((struct sockaddr_in *)addr)->sin_port)); SCTPDBG(SCTP_DEBUG_PCB1, "Addr: "); SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr); } #endif if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) { /* already did a bind, subsequent binds NOT allowed ! */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL); return (EINVAL); } #ifdef INVARIANTS if (p == NULL) panic("null proc/thread"); #endif if (addr != NULL) { switch (addr->sa_family) { #ifdef INET case AF_INET: { struct sockaddr_in *sin; /* IPV6_V6ONLY socket? */ if (SCTP_IPV6_V6ONLY(ip_inp)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL); return (EINVAL); } if (addr->sa_len != sizeof(*sin)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL); return (EINVAL); } sin = (struct sockaddr_in *)addr; lport = sin->sin_port; /* * For LOOPBACK the prison_local_ip4() call * will transmute the ip address to the * proper value. */ if (p && (error = prison_local_ip4(p->td_ucred, &sin->sin_addr)) != 0) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error); return (error); } if (sin->sin_addr.s_addr != INADDR_ANY) { bindall = 0; } break; } #endif #ifdef INET6 case AF_INET6: { /* * Only for pure IPv6 Address. (No IPv4 * Mapped!) */ struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)addr; if (addr->sa_len != sizeof(*sin6)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL); return (EINVAL); } lport = sin6->sin6_port; /* * For LOOPBACK the prison_local_ip6() call * will transmute the ipv6 address to the * proper value. */ if (p && (error = prison_local_ip6(p->td_ucred, &sin6->sin6_addr, (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error); return (error); } if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { bindall = 0; /* KAME hack: embed scopeid */ if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL); return (EINVAL); } } /* this must be cleared for ifa_ifwithaddr() */ sin6->sin6_scope_id = 0; break; } #endif default: SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EAFNOSUPPORT); return (EAFNOSUPPORT); } } SCTP_INP_INFO_WLOCK(); SCTP_INP_WLOCK(inp); /* Setup a vrf_id to be the default for the non-bind-all case. */ vrf_id = inp->def_vrf_id; /* increase our count due to the unlock we do */ SCTP_INP_INCR_REF(inp); if (lport) { /* * Did the caller specify a port? if so we must see if an ep * already has this one bound. */ /* got to be root to get at low ports */ if (ntohs(lport) < IPPORT_RESERVED) { if (p && (error = priv_check(p, PRIV_NETINET_RESERVEDPORT) )) { SCTP_INP_DECR_REF(inp); SCTP_INP_WUNLOCK(inp); SCTP_INP_INFO_WUNLOCK(); return (error); } } SCTP_INP_WUNLOCK(inp); if (bindall) { vrf_id = inp->def_vrf_id; inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id); if (inp_tmp != NULL) { /* * lock guy returned and lower count note * that we are not bound so inp_tmp should * NEVER be inp. And it is this inp * (inp_tmp) that gets the reference bump, * so we must lower it. */ SCTP_INP_DECR_REF(inp_tmp); /* unlock info */ if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) && (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) { /* * Ok, must be one-2-one and * allowing port re-use */ port_reuse_active = 1; goto continue_anyway; } SCTP_INP_DECR_REF(inp); SCTP_INP_INFO_WUNLOCK(); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE); return (EADDRINUSE); } } else { inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id); if (inp_tmp != NULL) { /* * lock guy returned and lower count note * that we are not bound so inp_tmp should * NEVER be inp. And it is this inp * (inp_tmp) that gets the reference bump, * so we must lower it. */ SCTP_INP_DECR_REF(inp_tmp); /* unlock info */ if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) && (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) { /* * Ok, must be one-2-one and * allowing port re-use */ port_reuse_active = 1; goto continue_anyway; } SCTP_INP_DECR_REF(inp); SCTP_INP_INFO_WUNLOCK(); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE); return (EADDRINUSE); } } continue_anyway: SCTP_INP_WLOCK(inp); if (bindall) { /* verify that no lport is not used by a singleton */ if ((port_reuse_active == 0) && (inp_tmp = sctp_isport_inuse(inp, lport, vrf_id))) { /* Sorry someone already has this one bound */ if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) && (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) { port_reuse_active = 1; } else { SCTP_INP_DECR_REF(inp); SCTP_INP_WUNLOCK(inp); SCTP_INP_INFO_WUNLOCK(); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE); return (EADDRINUSE); } } } } else { uint16_t first, last, candidate; uint16_t count; int done; if (ip_inp->inp_flags & INP_HIGHPORT) { first = MODULE_GLOBAL(ipport_hifirstauto); last = MODULE_GLOBAL(ipport_hilastauto); } else if (ip_inp->inp_flags & INP_LOWPORT) { if (p && (error = priv_check(p, PRIV_NETINET_RESERVEDPORT) )) { SCTP_INP_DECR_REF(inp); SCTP_INP_WUNLOCK(inp); SCTP_INP_INFO_WUNLOCK(); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error); return (error); } first = MODULE_GLOBAL(ipport_lowfirstauto); last = MODULE_GLOBAL(ipport_lowlastauto); } else { first = MODULE_GLOBAL(ipport_firstauto); last = MODULE_GLOBAL(ipport_lastauto); } if (first > last) { uint16_t temp; temp = first; first = last; last = temp; } count = last - first + 1; /* number of candidates */ candidate = first + sctp_select_initial_TSN(&inp->sctp_ep) % (count); done = 0; while (!done) { if (sctp_isport_inuse(inp, htons(candidate), inp->def_vrf_id) == NULL) { done = 1; } if (!done) { if (--count == 0) { SCTP_INP_DECR_REF(inp); SCTP_INP_WUNLOCK(inp); SCTP_INP_INFO_WUNLOCK(); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE); return (EADDRINUSE); } if (candidate == last) candidate = first; else candidate = candidate + 1; } } lport = htons(candidate); } SCTP_INP_DECR_REF(inp); if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_SOCKET_ALLGONE)) { /* * this really should not happen. The guy did a non-blocking * bind and then did a close at the same time. */ SCTP_INP_WUNLOCK(inp); SCTP_INP_INFO_WUNLOCK(); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL); return (EINVAL); } /* ok we look clear to give out this port, so lets setup the binding */ if (bindall) { /* binding to all addresses, so just set in the proper flags */ inp->sctp_flags |= SCTP_PCB_FLAGS_BOUNDALL; /* set the automatic addr changes from kernel flag */ if (SCTP_BASE_SYSCTL(sctp_auto_asconf) == 0) { sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF); sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF); } else { sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF); sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF); } if (SCTP_BASE_SYSCTL(sctp_multiple_asconfs) == 0) { sctp_feature_off(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS); } else { sctp_feature_on(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS); } /* * set the automatic mobility_base from kernel flag (by * micchie) */ if (SCTP_BASE_SYSCTL(sctp_mobility_base) == 0) { sctp_mobility_feature_off(inp, SCTP_MOBILITY_BASE); sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED); } else { sctp_mobility_feature_on(inp, SCTP_MOBILITY_BASE); sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED); } /* * set the automatic mobility_fasthandoff from kernel flag * (by micchie) */ if (SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) == 0) { sctp_mobility_feature_off(inp, SCTP_MOBILITY_FASTHANDOFF); sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED); } else { sctp_mobility_feature_on(inp, SCTP_MOBILITY_FASTHANDOFF); sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED); } } else { /* * bind specific, make sure flags is off and add a new * address structure to the sctp_addr_list inside the ep * structure. * * We will need to allocate one and insert it at the head. The * socketopt call can just insert new addresses in there as * well. It will also have to do the embed scope kame hack * too (before adding). */ struct sctp_ifa *ifa; union sctp_sockstore store; memset(&store, 0, sizeof(store)); switch (addr->sa_family) { #ifdef INET case AF_INET: memcpy(&store.sin, addr, sizeof(struct sockaddr_in)); store.sin.sin_port = 0; break; #endif #ifdef INET6 case AF_INET6: memcpy(&store.sin6, addr, sizeof(struct sockaddr_in6)); store.sin6.sin6_port = 0; break; #endif default: break; } /* * first find the interface with the bound address need to * zero out the port to find the address! yuck! can't do * this earlier since need port for sctp_pcb_findep() */ if (sctp_ifap != NULL) { ifa = sctp_ifap; } else { /* * Note for BSD we hit here always other O/S's will * pass things in via the sctp_ifap argument * (Panda). */ ifa = sctp_find_ifa_by_addr(&store.sa, vrf_id, SCTP_ADDR_NOT_LOCKED); } if (ifa == NULL) { /* Can't find an interface with that address */ SCTP_INP_WUNLOCK(inp); SCTP_INP_INFO_WUNLOCK(); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRNOTAVAIL); return (EADDRNOTAVAIL); } #ifdef INET6 if (addr->sa_family == AF_INET6) { /* GAK, more FIXME IFA lock? */ if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) { /* Can't bind a non-existent addr. */ SCTP_INP_WUNLOCK(inp); SCTP_INP_INFO_WUNLOCK(); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL); return (EINVAL); } } #endif /* we're not bound all */ inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUNDALL; /* allow bindx() to send ASCONF's for binding changes */ sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF); /* clear automatic addr changes from kernel flag */ sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF); /* add this address to the endpoint list */ error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, 0); if (error != 0) { SCTP_INP_WUNLOCK(inp); SCTP_INP_INFO_WUNLOCK(); return (error); } inp->laddr_count++; } /* find the bucket */ if (port_reuse_active) { /* Put it into tcp 1-2-1 hash */ head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashtcpmark))]; inp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL; } else { head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashmark))]; } /* put it in the bucket */ LIST_INSERT_HEAD(head, inp, sctp_hash); SCTPDBG(SCTP_DEBUG_PCB1, "Main hash to bind at head:%p, bound port:%d - in tcp_pool=%d\n", (void *)head, ntohs(lport), port_reuse_active); /* set in the port */ inp->sctp_lport = lport; /* turn off just the unbound flag */ inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND; SCTP_INP_WUNLOCK(inp); SCTP_INP_INFO_WUNLOCK(); return (0); } static void sctp_iterator_inp_being_freed(struct sctp_inpcb *inp) { struct sctp_iterator *it, *nit; /* * We enter with the only the ITERATOR_LOCK in place and a write * lock on the inp_info stuff. */ it = sctp_it_ctl.cur_it; if (it && (it->vn != curvnet)) { /* Its not looking at our VNET */ return; } if (it && (it->inp == inp)) { /* * This is tricky and we hold the iterator lock, but when it * returns and gets the lock (when we release it) the * iterator will try to operate on inp. We need to stop that * from happening. But of course the iterator has a * reference on the stcb and inp. We can mark it and it will * stop. * * If its a single iterator situation, we set the end iterator * flag. Otherwise we set the iterator to go to the next * inp. * */ if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) { sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT; } else { sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_INP; } } /* * Now go through and remove any single reference to our inp that * may be still pending on the list */ SCTP_IPI_ITERATOR_WQ_LOCK(); TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) { if (it->vn != curvnet) { continue; } if (it->inp == inp) { /* This one points to me is it inp specific? */ if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) { /* Remove and free this one */ TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr); if (it->function_atend != NULL) { (*it->function_atend) (it->pointer, it->val); } SCTP_FREE(it, SCTP_M_ITER); } else { it->inp = LIST_NEXT(it->inp, sctp_list); if (it->inp) { SCTP_INP_INCR_REF(it->inp); } } /* * When its put in the refcnt is incremented so decr * it */ SCTP_INP_DECR_REF(inp); } } SCTP_IPI_ITERATOR_WQ_UNLOCK(); } /* release sctp_inpcb unbind the port */ void sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from) { /* * Here we free a endpoint. We must find it (if it is in the Hash * table) and remove it from there. Then we must also find it in the * overall list and remove it from there. After all removals are * complete then any timer has to be stopped. Then start the actual * freeing. a) Any local lists. b) Any associations. c) The hash of * all associations. d) finally the ep itself. */ struct sctp_tcb *asoc, *nasoc; struct sctp_laddr *laddr, *nladdr; struct inpcb *ip_pcb; struct socket *so; int being_refed = 0; struct sctp_queued_to_read *sq, *nsq; int cnt; sctp_sharedkey_t *shared_key, *nshared_key; #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, NULL, 0); #endif SCTP_ITERATOR_LOCK(); /* mark any iterators on the list or being processed */ sctp_iterator_inp_being_freed(inp); SCTP_ITERATOR_UNLOCK(); so = inp->sctp_socket; if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) { /* been here before.. eeks.. get out of here */ SCTP_PRINTF("This conflict in free SHOULD not be happening! from %d, imm %d\n", from, immediate); #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, NULL, 1); #endif return; } SCTP_ASOC_CREATE_LOCK(inp); SCTP_INP_INFO_WLOCK(); SCTP_INP_WLOCK(inp); if (from == SCTP_CALLED_AFTER_CMPSET_OFCLOSE) { inp->sctp_flags &= ~SCTP_PCB_FLAGS_CLOSE_IP; /* socket is gone, so no more wakeups allowed */ inp->sctp_flags |= SCTP_PCB_FLAGS_DONT_WAKE; inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT; inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT; } /* First time through we have the socket lock, after that no more. */ sctp_timer_stop(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL, SCTP_FROM_SCTP_PCB + SCTP_LOC_1); if (inp->control) { sctp_m_freem(inp->control); inp->control = NULL; } if (inp->pkt) { sctp_m_freem(inp->pkt); inp->pkt = NULL; } ip_pcb = &inp->ip_inp.inp; /* we could just cast the main pointer * here but I will be nice :> (i.e. * ip_pcb = ep;) */ if (immediate == SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) { int cnt_in_sd; cnt_in_sd = 0; LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) { SCTP_TCB_LOCK(asoc); if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { /* Skip guys being freed */ cnt_in_sd++; if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) { /* * Special case - we did not start a * kill timer on the asoc due to it * was not closed. So go ahead and * start it now. */ asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE; sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL); } SCTP_TCB_UNLOCK(asoc); continue; } if (((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_WAIT) || (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_ECHOED)) && (asoc->asoc.total_output_queue_size == 0)) { /* * If we have data in queue, we don't want * to just free since the app may have done, * send()/close or connect/send/close. And * it wants the data to get across first. */ /* Just abandon things in the front states */ if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_2) == 0) { cnt_in_sd++; } continue; } /* Disconnect the socket please */ asoc->sctp_socket = NULL; asoc->asoc.state |= SCTP_STATE_CLOSED_SOCKET; if ((asoc->asoc.size_on_reasm_queue > 0) || (asoc->asoc.control_pdapi) || (asoc->asoc.size_on_all_streams > 0) || (so && (so->so_rcv.sb_cc > 0))) { /* Left with Data unread */ struct mbuf *op_err; op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, ""); asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_3; sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED); SCTP_STAT_INCR_COUNTER32(sctps_aborted); if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) || (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { SCTP_STAT_DECR_GAUGE32(sctps_currestab); } if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_4) == 0) { cnt_in_sd++; } continue; } else if (TAILQ_EMPTY(&asoc->asoc.send_queue) && TAILQ_EMPTY(&asoc->asoc.sent_queue) && (asoc->asoc.stream_queue_cnt == 0)) { if (asoc->asoc.locked_on_sending) { goto abort_anyway; } if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_SENT) && (SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) { struct sctp_nets *netp; /* * there is nothing queued to send, * so I send shutdown */ if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) || (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { SCTP_STAT_DECR_GAUGE32(sctps_currestab); } SCTP_SET_STATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_SENT); SCTP_CLEAR_SUBSTATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_PENDING); sctp_stop_timers_for_shutdown(asoc); if (asoc->asoc.alternate) { netp = asoc->asoc.alternate; } else { netp = asoc->asoc.primary_destination; } sctp_send_shutdown(asoc, netp); sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, asoc->sctp_ep, asoc, netp); sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc, asoc->asoc.primary_destination); sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_LOCKED); } } else { /* mark into shutdown pending */ struct sctp_stream_queue_pending *sp; asoc->asoc.state |= SCTP_STATE_SHUTDOWN_PENDING; sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc, asoc->asoc.primary_destination); if (asoc->asoc.locked_on_sending) { sp = TAILQ_LAST(&((asoc->asoc.locked_on_sending)->outqueue), sctp_streamhead); if (sp == NULL) { SCTP_PRINTF("Error, sp is NULL, locked on sending is %p strm:%d\n", (void *)asoc->asoc.locked_on_sending, asoc->asoc.locked_on_sending->stream_no); } else { if ((sp->length == 0) && (sp->msg_is_complete == 0)) asoc->asoc.state |= SCTP_STATE_PARTIAL_MSG_LEFT; } } if (TAILQ_EMPTY(&asoc->asoc.send_queue) && TAILQ_EMPTY(&asoc->asoc.sent_queue) && (asoc->asoc.state & SCTP_STATE_PARTIAL_MSG_LEFT)) { struct mbuf *op_err; abort_anyway: op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, ""); asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_5; sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED); SCTP_STAT_INCR_COUNTER32(sctps_aborted); if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) || (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { SCTP_STAT_DECR_GAUGE32(sctps_currestab); } if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_6) == 0) { cnt_in_sd++; } continue; } else { sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED); } } cnt_in_sd++; SCTP_TCB_UNLOCK(asoc); } /* now is there some left in our SHUTDOWN state? */ if (cnt_in_sd) { #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, NULL, 2); #endif inp->sctp_socket = NULL; SCTP_INP_WUNLOCK(inp); SCTP_ASOC_CREATE_UNLOCK(inp); SCTP_INP_INFO_WUNLOCK(); return; } } inp->sctp_socket = NULL; if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) != SCTP_PCB_FLAGS_UNBOUND) { /* * ok, this guy has been bound. It's port is somewhere in * the SCTP_BASE_INFO(hash table). Remove it! */ LIST_REMOVE(inp, sctp_hash); inp->sctp_flags |= SCTP_PCB_FLAGS_UNBOUND; } /* * If there is a timer running to kill us, forget it, since it may * have a contest on the INP lock.. which would cause us to die ... */ cnt = 0; LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) { SCTP_TCB_LOCK(asoc); if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) { asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE; sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL); } cnt++; SCTP_TCB_UNLOCK(asoc); continue; } /* Free associations that are NOT killing us */ if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_COOKIE_WAIT) && ((asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) { struct mbuf *op_err; op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, ""); asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_7; sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED); SCTP_STAT_INCR_COUNTER32(sctps_aborted); } else if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { cnt++; SCTP_TCB_UNLOCK(asoc); continue; } if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) || (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { SCTP_STAT_DECR_GAUGE32(sctps_currestab); } if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_8) == 0) { cnt++; } } if (cnt) { /* Ok we have someone out there that will kill us */ (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer); #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, NULL, 3); #endif SCTP_INP_WUNLOCK(inp); SCTP_ASOC_CREATE_UNLOCK(inp); SCTP_INP_INFO_WUNLOCK(); return; } if (SCTP_INP_LOCK_CONTENDED(inp)) being_refed++; if (SCTP_INP_READ_CONTENDED(inp)) being_refed++; if (SCTP_ASOC_CREATE_LOCK_CONTENDED(inp)) being_refed++; if ((inp->refcount) || (being_refed) || (inp->sctp_flags & SCTP_PCB_FLAGS_CLOSE_IP)) { (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer); #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, NULL, 4); #endif sctp_timer_start(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL); SCTP_INP_WUNLOCK(inp); SCTP_ASOC_CREATE_UNLOCK(inp); SCTP_INP_INFO_WUNLOCK(); return; } inp->sctp_ep.signature_change.type = 0; inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_ALLGONE; /* * Remove it from the list .. last thing we need a lock for. */ LIST_REMOVE(inp, sctp_list); SCTP_INP_WUNLOCK(inp); SCTP_ASOC_CREATE_UNLOCK(inp); SCTP_INP_INFO_WUNLOCK(); /* * Now we release all locks. Since this INP cannot be found anymore * except possibly by the kill timer that might be running. We call * the drain function here. It should hit the case were it sees the * ACTIVE flag cleared and exit out freeing us to proceed and * destroy everything. */ if (from != SCTP_CALLED_FROM_INPKILL_TIMER) { (void)SCTP_OS_TIMER_STOP_DRAIN(&inp->sctp_ep.signature_change.timer); } else { /* Probably un-needed */ (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer); } #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, NULL, 5); #endif if ((inp->sctp_asocidhash) != NULL) { SCTP_HASH_FREE(inp->sctp_asocidhash, inp->hashasocidmark); inp->sctp_asocidhash = NULL; } /* sa_ignore FREED_MEMORY */ TAILQ_FOREACH_SAFE(sq, &inp->read_queue, next, nsq) { /* Its only abandoned if it had data left */ if (sq->length) SCTP_STAT_INCR(sctps_left_abandon); TAILQ_REMOVE(&inp->read_queue, sq, next); sctp_free_remote_addr(sq->whoFrom); if (so) so->so_rcv.sb_cc -= sq->length; if (sq->data) { sctp_m_freem(sq->data); sq->data = NULL; } /* * no need to free the net count, since at this point all * assoc's are gone. */ - SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq); - SCTP_DECR_READQ_COUNT(); + sctp_free_a_readq(NULL, sq); } /* Now the sctp_pcb things */ /* * free each asoc if it is not already closed/free. we can't use the * macro here since le_next will get freed as part of the * sctp_free_assoc() call. */ #ifdef IPSEC ipsec_delete_pcbpolicy(ip_pcb); #endif if (ip_pcb->inp_options) { (void)sctp_m_free(ip_pcb->inp_options); ip_pcb->inp_options = 0; } #ifdef INET6 if (ip_pcb->inp_vflag & INP_IPV6) { struct in6pcb *in6p; in6p = (struct in6pcb *)inp; ip6_freepcbopts(in6p->in6p_outputopts); } #endif /* INET6 */ ip_pcb->inp_vflag = 0; /* free up authentication fields */ if (inp->sctp_ep.local_auth_chunks != NULL) sctp_free_chunklist(inp->sctp_ep.local_auth_chunks); if (inp->sctp_ep.local_hmacs != NULL) sctp_free_hmaclist(inp->sctp_ep.local_hmacs); LIST_FOREACH_SAFE(shared_key, &inp->sctp_ep.shared_keys, next, nshared_key) { LIST_REMOVE(shared_key, next); sctp_free_sharedkey(shared_key); /* sa_ignore FREED_MEMORY */ } /* * if we have an address list the following will free the list of * ifaddr's that are set into this ep. Again macro limitations here, * since the LIST_FOREACH could be a bad idea. */ LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) { sctp_remove_laddr(laddr); } #ifdef SCTP_TRACK_FREED_ASOCS /* TEMP CODE */ LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_free_list, sctp_tcblist, nasoc) { LIST_REMOVE(asoc, sctp_tcblist); SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), asoc); SCTP_DECR_ASOC_COUNT(); } /* *** END TEMP CODE *** */ #endif /* Now lets see about freeing the EP hash table. */ if (inp->sctp_tcbhash != NULL) { SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark); inp->sctp_tcbhash = NULL; } /* Now we must put the ep memory back into the zone pool */ crfree(inp->ip_inp.inp.inp_cred); INP_LOCK_DESTROY(&inp->ip_inp.inp); SCTP_INP_LOCK_DESTROY(inp); SCTP_INP_READ_DESTROY(inp); SCTP_ASOC_CREATE_LOCK_DESTROY(inp); SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp); SCTP_DECR_EP_COUNT(); } struct sctp_nets * sctp_findnet(struct sctp_tcb *stcb, struct sockaddr *addr) { struct sctp_nets *net; /* locate the address */ TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { if (sctp_cmpaddr(addr, (struct sockaddr *)&net->ro._l_addr)) return (net); } return (NULL); } int sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id) { struct sctp_ifa *sctp_ifa; sctp_ifa = sctp_find_ifa_by_addr(addr, vrf_id, SCTP_ADDR_NOT_LOCKED); if (sctp_ifa) { return (1); } else { return (0); } } /* * add's a remote endpoint address, done with the INIT/INIT-ACK as well as * when a ASCONF arrives that adds it. It will also initialize all the cwnd * stats of stuff. */ int sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr, struct sctp_nets **netp, int set_scope, int from) { /* * The following is redundant to the same lines in the * sctp_aloc_assoc() but is needed since others call the add address * function */ struct sctp_nets *net, *netfirst; int addr_inscope; SCTPDBG(SCTP_DEBUG_PCB1, "Adding an address (from:%d) to the peer: ", from); SCTPDBG_ADDR(SCTP_DEBUG_PCB1, newaddr); netfirst = sctp_findnet(stcb, newaddr); if (netfirst) { /* * Lie and return ok, we don't want to make the association * go away for this behavior. It will happen in the TCP * model in a connected socket. It does not reach the hash * table until after the association is built so it can't be * found. Mark as reachable, since the initial creation will * have been cleared and the NOT_IN_ASSOC flag will have * been added... and we don't want to end up removing it * back out. */ if (netfirst->dest_state & SCTP_ADDR_UNCONFIRMED) { netfirst->dest_state = (SCTP_ADDR_REACHABLE | SCTP_ADDR_UNCONFIRMED); } else { netfirst->dest_state = SCTP_ADDR_REACHABLE; } return (0); } addr_inscope = 1; switch (newaddr->sa_family) { #ifdef INET case AF_INET: { struct sockaddr_in *sin; sin = (struct sockaddr_in *)newaddr; if (sin->sin_addr.s_addr == 0) { /* Invalid address */ return (-1); } /* zero out the bzero area */ memset(&sin->sin_zero, 0, sizeof(sin->sin_zero)); /* assure len is set */ sin->sin_len = sizeof(struct sockaddr_in); if (set_scope) { if (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) { stcb->asoc.scope.ipv4_local_scope = 1; } } else { /* Validate the address is in scope */ if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) && (stcb->asoc.scope.ipv4_local_scope == 0)) { addr_inscope = 0; } } break; } #endif #ifdef INET6 case AF_INET6: { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)newaddr; if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { /* Invalid address */ return (-1); } /* assure len is set */ sin6->sin6_len = sizeof(struct sockaddr_in6); if (set_scope) { if (sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id)) { stcb->asoc.scope.loopback_scope = 1; stcb->asoc.scope.local_scope = 0; stcb->asoc.scope.ipv4_local_scope = 1; stcb->asoc.scope.site_scope = 1; } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) { /* * If the new destination is a * LINK_LOCAL we must have common * site scope. Don't set the local * scope since we may not share all * links, only loopback can do this. * Links on the local network would * also be on our private network * for v4 too. */ stcb->asoc.scope.ipv4_local_scope = 1; stcb->asoc.scope.site_scope = 1; } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) { /* * If the new destination is * SITE_LOCAL then we must have site * scope in common. */ stcb->asoc.scope.site_scope = 1; } } else { /* Validate the address is in scope */ if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) && (stcb->asoc.scope.loopback_scope == 0)) { addr_inscope = 0; } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) && (stcb->asoc.scope.local_scope == 0)) { addr_inscope = 0; } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) && (stcb->asoc.scope.site_scope == 0)) { addr_inscope = 0; } } break; } #endif default: /* not supported family type */ return (-1); } net = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_net), struct sctp_nets); if (net == NULL) { return (-1); } SCTP_INCR_RADDR_COUNT(); bzero(net, sizeof(struct sctp_nets)); (void)SCTP_GETTIME_TIMEVAL(&net->start_time); memcpy(&net->ro._l_addr, newaddr, newaddr->sa_len); switch (newaddr->sa_family) { #ifdef INET case AF_INET: ((struct sockaddr_in *)&net->ro._l_addr)->sin_port = stcb->rport; break; #endif #ifdef INET6 case AF_INET6: ((struct sockaddr_in6 *)&net->ro._l_addr)->sin6_port = stcb->rport; break; #endif default: break; } net->addr_is_local = sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id); if (net->addr_is_local && ((set_scope || (from == SCTP_ADDR_IS_CONFIRMED)))) { stcb->asoc.scope.loopback_scope = 1; stcb->asoc.scope.ipv4_local_scope = 1; stcb->asoc.scope.local_scope = 0; stcb->asoc.scope.site_scope = 1; addr_inscope = 1; } net->failure_threshold = stcb->asoc.def_net_failure; net->pf_threshold = stcb->asoc.def_net_pf_threshold; if (addr_inscope == 0) { net->dest_state = (SCTP_ADDR_REACHABLE | SCTP_ADDR_OUT_OF_SCOPE); } else { if (from == SCTP_ADDR_IS_CONFIRMED) /* SCTP_ADDR_IS_CONFIRMED is passed by connect_x */ net->dest_state = SCTP_ADDR_REACHABLE; else net->dest_state = SCTP_ADDR_REACHABLE | SCTP_ADDR_UNCONFIRMED; } /* * We set this to 0, the timer code knows that this means its an * initial value */ net->rto_needed = 1; net->RTO = 0; net->RTO_measured = 0; stcb->asoc.numnets++; net->ref_count = 1; net->cwr_window_tsn = net->last_cwr_tsn = stcb->asoc.sending_seq - 1; net->port = stcb->asoc.port; net->dscp = stcb->asoc.default_dscp; #ifdef INET6 net->flowlabel = stcb->asoc.default_flowlabel; #endif if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) { net->dest_state |= SCTP_ADDR_NOHB; } else { net->dest_state &= ~SCTP_ADDR_NOHB; } if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DO_NOT_PMTUD)) { net->dest_state |= SCTP_ADDR_NO_PMTUD; } else { net->dest_state &= ~SCTP_ADDR_NO_PMTUD; } net->heart_beat_delay = stcb->asoc.heart_beat_delay; /* Init the timer structure */ SCTP_OS_TIMER_INIT(&net->rxt_timer.timer); SCTP_OS_TIMER_INIT(&net->pmtu_timer.timer); SCTP_OS_TIMER_INIT(&net->hb_timer.timer); /* Now generate a route for this guy */ #ifdef INET6 /* KAME hack: embed scopeid */ if (newaddr->sa_family == AF_INET6) { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)&net->ro._l_addr; (void)sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)); sin6->sin6_scope_id = 0; } #endif SCTP_RTALLOC((sctp_route_t *) & net->ro, stcb->asoc.vrf_id, stcb->sctp_ep->fibnum); if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro)) { /* Get source address */ net->ro._s_addr = sctp_source_address_selection(stcb->sctp_ep, stcb, (sctp_route_t *) & net->ro, net, 0, stcb->asoc.vrf_id); if (net->ro._s_addr != NULL) { net->src_addr_selected = 1; /* Now get the interface MTU */ if (net->ro._s_addr->ifn_p != NULL) { net->mtu = SCTP_GATHER_MTU_FROM_INTFC(net->ro._s_addr->ifn_p); } } else { net->src_addr_selected = 0; } if (net->mtu > 0) { uint32_t rmtu; rmtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, net->ro.ro_rt); if (rmtu == 0) { /* * Start things off to match mtu of * interface please. */ SCTP_SET_MTU_OF_ROUTE(&net->ro._l_addr.sa, net->ro.ro_rt, net->mtu); } else { /* * we take the route mtu over the interface, * since the route may be leading out the * loopback, or a different interface. */ net->mtu = rmtu; } } } else { net->src_addr_selected = 0; } if (net->mtu == 0) { switch (newaddr->sa_family) { #ifdef INET case AF_INET: net->mtu = SCTP_DEFAULT_MTU; break; #endif #ifdef INET6 case AF_INET6: net->mtu = 1280; break; #endif default: break; } } #if defined(INET) || defined(INET6) if (net->port) { net->mtu -= (uint32_t) sizeof(struct udphdr); } #endif if (from == SCTP_ALLOC_ASOC) { stcb->asoc.smallest_mtu = net->mtu; } if (stcb->asoc.smallest_mtu > net->mtu) { stcb->asoc.smallest_mtu = net->mtu; } #ifdef INET6 if (newaddr->sa_family == AF_INET6) { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)&net->ro._l_addr; (void)sa6_recoverscope(sin6); } #endif /* JRS - Use the congestion control given in the CC module */ if (stcb->asoc.cc_functions.sctp_set_initial_cc_param != NULL) (*stcb->asoc.cc_functions.sctp_set_initial_cc_param) (stcb, net); /* * CMT: CUC algo - set find_pseudo_cumack to TRUE (1) at beginning * of assoc (2005/06/27, iyengar@cis.udel.edu) */ net->find_pseudo_cumack = 1; net->find_rtx_pseudo_cumack = 1; /* Choose an initial flowid. */ net->flowid = stcb->asoc.my_vtag ^ ntohs(stcb->rport) ^ ntohs(stcb->sctp_ep->sctp_lport); net->flowtype = M_HASHTYPE_OPAQUE; if (netp) { *netp = net; } netfirst = TAILQ_FIRST(&stcb->asoc.nets); if (net->ro.ro_rt == NULL) { /* Since we have no route put it at the back */ TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next); } else if (netfirst == NULL) { /* We are the first one in the pool. */ TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next); } else if (netfirst->ro.ro_rt == NULL) { /* * First one has NO route. Place this one ahead of the first * one. */ TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next); } else if (net->ro.ro_rt->rt_ifp != netfirst->ro.ro_rt->rt_ifp) { /* * This one has a different interface than the one at the * top of the list. Place it ahead. */ TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next); } else { /* * Ok we have the same interface as the first one. Move * forward until we find either a) one with a NULL route... * insert ahead of that b) one with a different ifp.. insert * after that. c) end of the list.. insert at the tail. */ struct sctp_nets *netlook; do { netlook = TAILQ_NEXT(netfirst, sctp_next); if (netlook == NULL) { /* End of the list */ TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next); break; } else if (netlook->ro.ro_rt == NULL) { /* next one has NO route */ TAILQ_INSERT_BEFORE(netfirst, net, sctp_next); break; } else if (netlook->ro.ro_rt->rt_ifp != net->ro.ro_rt->rt_ifp) { TAILQ_INSERT_AFTER(&stcb->asoc.nets, netlook, net, sctp_next); break; } /* Shift forward */ netfirst = netlook; } while (netlook != NULL); } /* got to have a primary set */ if (stcb->asoc.primary_destination == 0) { stcb->asoc.primary_destination = net; } else if ((stcb->asoc.primary_destination->ro.ro_rt == NULL) && (net->ro.ro_rt) && ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) { /* No route to current primary adopt new primary */ stcb->asoc.primary_destination = net; } /* Validate primary is first */ net = TAILQ_FIRST(&stcb->asoc.nets); if ((net != stcb->asoc.primary_destination) && (stcb->asoc.primary_destination)) { /* * first one on the list is NOT the primary sctp_cmpaddr() * is much more efficient if the primary is the first on the * list, make it so. */ TAILQ_REMOVE(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next); TAILQ_INSERT_HEAD(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next); } return (0); } static uint32_t sctp_aloc_a_assoc_id(struct sctp_inpcb *inp, struct sctp_tcb *stcb) { uint32_t id; struct sctpasochead *head; struct sctp_tcb *lstcb; SCTP_INP_WLOCK(inp); try_again: if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) { /* TSNH */ SCTP_INP_WUNLOCK(inp); return (0); } /* * We don't allow assoc id to be one of SCTP_FUTURE_ASSOC, * SCTP_CURRENT_ASSOC and SCTP_ALL_ASSOC. */ if (inp->sctp_associd_counter <= SCTP_ALL_ASSOC) { inp->sctp_associd_counter = SCTP_ALL_ASSOC + 1; } id = inp->sctp_associd_counter; inp->sctp_associd_counter++; lstcb = sctp_findasoc_ep_asocid_locked(inp, (sctp_assoc_t) id, 0); if (lstcb) { goto try_again; } head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)]; LIST_INSERT_HEAD(head, stcb, sctp_tcbasocidhash); stcb->asoc.in_asocid_hash = 1; SCTP_INP_WUNLOCK(inp); return id; } /* * allocate an association and add it to the endpoint. The caller must be * careful to add all additional addresses once they are know right away or * else the assoc will be may experience a blackout scenario. */ struct sctp_tcb * sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr, int *error, uint32_t override_tag, uint32_t vrf_id, uint16_t o_streams, struct thread *p ) { /* note the p argument is only valid in unbound sockets */ struct sctp_tcb *stcb; struct sctp_association *asoc; struct sctpasochead *head; uint16_t rport; int err; /* * Assumption made here: Caller has done a * sctp_findassociation_ep_addr(ep, addr's); to make sure the * address does not exist already. */ if (SCTP_BASE_INFO(ipi_count_asoc) >= SCTP_MAX_NUM_OF_ASOC) { /* Hit max assoc, sorry no more */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS); *error = ENOBUFS; return (NULL); } if (firstaddr == NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL); *error = EINVAL; return (NULL); } SCTP_INP_RLOCK(inp); if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) && ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) || (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) { /* * If its in the TCP pool, its NOT allowed to create an * association. The parent listener needs to call * sctp_aloc_assoc.. or the one-2-many socket. If a peeled * off, or connected one does this.. its an error. */ SCTP_INP_RUNLOCK(inp); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL); *error = EINVAL; return (NULL); } if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)) { if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) || (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED)) { SCTP_INP_RUNLOCK(inp); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL); *error = EINVAL; return (NULL); } } SCTPDBG(SCTP_DEBUG_PCB3, "Allocate an association for peer:"); #ifdef SCTP_DEBUG if (firstaddr) { SCTPDBG_ADDR(SCTP_DEBUG_PCB3, firstaddr); switch (firstaddr->sa_family) { #ifdef INET case AF_INET: SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n", ntohs(((struct sockaddr_in *)firstaddr)->sin_port)); break; #endif #ifdef INET6 case AF_INET6: SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n", ntohs(((struct sockaddr_in6 *)firstaddr)->sin6_port)); break; #endif default: break; } } else { SCTPDBG(SCTP_DEBUG_PCB3, "None\n"); } #endif /* SCTP_DEBUG */ switch (firstaddr->sa_family) { #ifdef INET case AF_INET: { struct sockaddr_in *sin; sin = (struct sockaddr_in *)firstaddr; if ((ntohs(sin->sin_port) == 0) || (sin->sin_addr.s_addr == INADDR_ANY) || (sin->sin_addr.s_addr == INADDR_BROADCAST) || IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) { /* Invalid address */ SCTP_INP_RUNLOCK(inp); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL); *error = EINVAL; return (NULL); } rport = sin->sin_port; break; } #endif #ifdef INET6 case AF_INET6: { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)firstaddr; if ((ntohs(sin6->sin6_port) == 0) || IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) || IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) { /* Invalid address */ SCTP_INP_RUNLOCK(inp); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL); *error = EINVAL; return (NULL); } rport = sin6->sin6_port; break; } #endif default: /* not supported family type */ SCTP_INP_RUNLOCK(inp); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL); *error = EINVAL; return (NULL); } SCTP_INP_RUNLOCK(inp); if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) { /* * If you have not performed a bind, then we need to do the * ephemeral bind for you. */ if ((err = sctp_inpcb_bind(inp->sctp_socket, (struct sockaddr *)NULL, (struct sctp_ifa *)NULL, p ))) { /* bind error, probably perm */ *error = err; return (NULL); } } stcb = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asoc), struct sctp_tcb); if (stcb == NULL) { /* out of memory? */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM); *error = ENOMEM; return (NULL); } SCTP_INCR_ASOC_COUNT(); bzero(stcb, sizeof(*stcb)); asoc = &stcb->asoc; asoc->assoc_id = sctp_aloc_a_assoc_id(inp, stcb); SCTP_TCB_LOCK_INIT(stcb); SCTP_TCB_SEND_LOCK_INIT(stcb); stcb->rport = rport; /* setup back pointer's */ stcb->sctp_ep = inp; stcb->sctp_socket = inp->sctp_socket; if ((err = sctp_init_asoc(inp, stcb, override_tag, vrf_id, o_streams))) { /* failed */ SCTP_TCB_LOCK_DESTROY(stcb); SCTP_TCB_SEND_LOCK_DESTROY(stcb); LIST_REMOVE(stcb, sctp_tcbasocidhash); SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb); SCTP_DECR_ASOC_COUNT(); *error = err; return (NULL); } /* and the port */ SCTP_INP_INFO_WLOCK(); SCTP_INP_WLOCK(inp); if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_SOCKET_ALLGONE)) { /* inpcb freed while alloc going on */ SCTP_TCB_LOCK_DESTROY(stcb); SCTP_TCB_SEND_LOCK_DESTROY(stcb); LIST_REMOVE(stcb, sctp_tcbasocidhash); SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb); SCTP_INP_WUNLOCK(inp); SCTP_INP_INFO_WUNLOCK(); SCTP_DECR_ASOC_COUNT(); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL); *error = EINVAL; return (NULL); } SCTP_TCB_LOCK(stcb); /* now that my_vtag is set, add it to the hash */ head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))]; /* put it in the bucket in the vtag hash of assoc's for the system */ LIST_INSERT_HEAD(head, stcb, sctp_asocs); SCTP_INP_INFO_WUNLOCK(); if ((err = sctp_add_remote_addr(stcb, firstaddr, NULL, SCTP_DO_SETSCOPE, SCTP_ALLOC_ASOC))) { /* failure.. memory error? */ if (asoc->strmout) { SCTP_FREE(asoc->strmout, SCTP_M_STRMO); asoc->strmout = NULL; } if (asoc->mapping_array) { SCTP_FREE(asoc->mapping_array, SCTP_M_MAP); asoc->mapping_array = NULL; } if (asoc->nr_mapping_array) { SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP); asoc->nr_mapping_array = NULL; } SCTP_DECR_ASOC_COUNT(); SCTP_TCB_UNLOCK(stcb); SCTP_TCB_LOCK_DESTROY(stcb); SCTP_TCB_SEND_LOCK_DESTROY(stcb); LIST_REMOVE(stcb, sctp_tcbasocidhash); SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb); SCTP_INP_WUNLOCK(inp); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS); *error = ENOBUFS; return (NULL); } /* Init all the timers */ SCTP_OS_TIMER_INIT(&asoc->dack_timer.timer); SCTP_OS_TIMER_INIT(&asoc->strreset_timer.timer); SCTP_OS_TIMER_INIT(&asoc->asconf_timer.timer); SCTP_OS_TIMER_INIT(&asoc->shut_guard_timer.timer); SCTP_OS_TIMER_INIT(&asoc->autoclose_timer.timer); SCTP_OS_TIMER_INIT(&asoc->delayed_event_timer.timer); SCTP_OS_TIMER_INIT(&asoc->delete_prim_timer.timer); LIST_INSERT_HEAD(&inp->sctp_asoc_list, stcb, sctp_tcblist); /* now file the port under the hash as well */ if (inp->sctp_tcbhash != NULL) { head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(stcb->rport, inp->sctp_hashmark)]; LIST_INSERT_HEAD(head, stcb, sctp_tcbhash); } SCTP_INP_WUNLOCK(inp); SCTPDBG(SCTP_DEBUG_PCB1, "Association %p now allocated\n", (void *)stcb); return (stcb); } void sctp_remove_net(struct sctp_tcb *stcb, struct sctp_nets *net) { struct sctp_association *asoc; asoc = &stcb->asoc; asoc->numnets--; TAILQ_REMOVE(&asoc->nets, net, sctp_next); if (net == asoc->primary_destination) { /* Reset primary */ struct sctp_nets *lnet; lnet = TAILQ_FIRST(&asoc->nets); /* * Mobility adaptation Ideally, if deleted destination is * the primary, it becomes a fast retransmission trigger by * the subsequent SET PRIMARY. (by micchie) */ if (sctp_is_mobility_feature_on(stcb->sctp_ep, SCTP_MOBILITY_BASE) || sctp_is_mobility_feature_on(stcb->sctp_ep, SCTP_MOBILITY_FASTHANDOFF)) { SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: primary dst is deleting\n"); if (asoc->deleted_primary != NULL) { SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: deleted primary may be already stored\n"); goto out; } asoc->deleted_primary = net; atomic_add_int(&net->ref_count, 1); memset(&net->lastsa, 0, sizeof(net->lastsa)); memset(&net->lastsv, 0, sizeof(net->lastsv)); sctp_mobility_feature_on(stcb->sctp_ep, SCTP_MOBILITY_PRIM_DELETED); sctp_timer_start(SCTP_TIMER_TYPE_PRIM_DELETED, stcb->sctp_ep, stcb, NULL); } out: /* Try to find a confirmed primary */ asoc->primary_destination = sctp_find_alternate_net(stcb, lnet, 0); } if (net == asoc->last_data_chunk_from) { /* Reset primary */ asoc->last_data_chunk_from = TAILQ_FIRST(&asoc->nets); } if (net == asoc->last_control_chunk_from) { /* Clear net */ asoc->last_control_chunk_from = NULL; } if (net == stcb->asoc.alternate) { sctp_free_remote_addr(stcb->asoc.alternate); stcb->asoc.alternate = NULL; } sctp_free_remote_addr(net); } /* * remove a remote endpoint address from an association, it will fail if the * address does not exist. */ int sctp_del_remote_addr(struct sctp_tcb *stcb, struct sockaddr *remaddr) { /* * Here we need to remove a remote address. This is quite simple, we * first find it in the list of address for the association * (tasoc->asoc.nets) and then if it is there, we do a LIST_REMOVE * on that item. Note we do not allow it to be removed if there are * no other addresses. */ struct sctp_association *asoc; struct sctp_nets *net, *nnet; asoc = &stcb->asoc; /* locate the address */ TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) { if (net->ro._l_addr.sa.sa_family != remaddr->sa_family) { continue; } if (sctp_cmpaddr((struct sockaddr *)&net->ro._l_addr, remaddr)) { /* we found the guy */ if (asoc->numnets < 2) { /* Must have at LEAST two remote addresses */ return (-1); } else { sctp_remove_net(stcb, net); return (0); } } } /* not found. */ return (-2); } void sctp_delete_from_timewait(uint32_t tag, uint16_t lport, uint16_t rport) { struct sctpvtaghead *chain; struct sctp_tagblock *twait_block; int found = 0; int i; chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)]; LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) { for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) { if ((twait_block->vtag_block[i].v_tag == tag) && (twait_block->vtag_block[i].lport == lport) && (twait_block->vtag_block[i].rport == rport)) { twait_block->vtag_block[i].tv_sec_at_expire = 0; twait_block->vtag_block[i].v_tag = 0; twait_block->vtag_block[i].lport = 0; twait_block->vtag_block[i].rport = 0; found = 1; break; } } if (found) break; } } int sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport) { struct sctpvtaghead *chain; struct sctp_tagblock *twait_block; int found = 0; int i; SCTP_INP_INFO_WLOCK(); chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)]; LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) { for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) { if ((twait_block->vtag_block[i].v_tag == tag) && (twait_block->vtag_block[i].lport == lport) && (twait_block->vtag_block[i].rport == rport)) { found = 1; break; } } if (found) break; } SCTP_INP_INFO_WUNLOCK(); return (found); } void sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport) { struct sctpvtaghead *chain; struct sctp_tagblock *twait_block; struct timeval now; int set, i; if (time == 0) { /* Its disabled */ return; } (void)SCTP_GETTIME_TIMEVAL(&now); chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)]; set = 0; LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) { /* Block(s) present, lets find space, and expire on the fly */ for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) { if ((twait_block->vtag_block[i].v_tag == 0) && !set) { twait_block->vtag_block[i].tv_sec_at_expire = now.tv_sec + time; twait_block->vtag_block[i].v_tag = tag; twait_block->vtag_block[i].lport = lport; twait_block->vtag_block[i].rport = rport; set = 1; } else if ((twait_block->vtag_block[i].v_tag) && ((long)twait_block->vtag_block[i].tv_sec_at_expire < now.tv_sec)) { /* Audit expires this guy */ twait_block->vtag_block[i].tv_sec_at_expire = 0; twait_block->vtag_block[i].v_tag = 0; twait_block->vtag_block[i].lport = 0; twait_block->vtag_block[i].rport = 0; if (set == 0) { /* Reuse it for my new tag */ twait_block->vtag_block[i].tv_sec_at_expire = now.tv_sec + time; twait_block->vtag_block[i].v_tag = tag; twait_block->vtag_block[i].lport = lport; twait_block->vtag_block[i].rport = rport; set = 1; } } } if (set) { /* * We only do up to the block where we can place our * tag for audits */ break; } } /* Need to add a new block to chain */ if (!set) { SCTP_MALLOC(twait_block, struct sctp_tagblock *, sizeof(struct sctp_tagblock), SCTP_M_TIMW); if (twait_block == NULL) { #ifdef INVARIANTS panic("Can not alloc tagblock"); #endif return; } memset(twait_block, 0, sizeof(struct sctp_tagblock)); LIST_INSERT_HEAD(chain, twait_block, sctp_nxt_tagblock); twait_block->vtag_block[0].tv_sec_at_expire = now.tv_sec + time; twait_block->vtag_block[0].v_tag = tag; twait_block->vtag_block[0].lport = lport; twait_block->vtag_block[0].rport = rport; } } +void +sctp_clean_up_stream(struct sctp_tcb *stcb, struct sctp_readhead *rh) +{ + struct sctp_tmit_chunk *chk, *nchk; + struct sctp_queued_to_read *ctl, *nctl; + TAILQ_FOREACH_SAFE(ctl, rh, next_instrm, nctl) { + TAILQ_REMOVE(rh, ctl, next_instrm); + ctl->on_strm_q = 0; + if (ctl->on_read_q == 0) { + sctp_free_remote_addr(ctl->whoFrom); + if (ctl->data) { + sctp_m_freem(ctl->data); + ctl->data = NULL; + } + } + /* Reassembly free? */ + TAILQ_FOREACH_SAFE(chk, &ctl->reasm, sctp_next, nchk) { + TAILQ_REMOVE(&ctl->reasm, chk, sctp_next); + if (chk->data) { + sctp_m_freem(chk->data); + chk->data = NULL; + } + if (chk->holds_key_ref) + sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED); + sctp_free_remote_addr(chk->whoTo); + SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk); + SCTP_DECR_CHK_COUNT(); + /* sa_ignore FREED_MEMORY */ + } + /* + * We don't free the address here since all the net's were + * freed above. + */ + if (ctl->on_read_q == 0) { + sctp_free_a_readq(stcb, ctl); + } + } +} + /*- * Free the association after un-hashing the remote port. This * function ALWAYS returns holding NO LOCK on the stcb. It DOES * expect that the input to this function IS a locked TCB. * It will return 0, if it did NOT destroy the association (instead * it unlocks it. It will return NON-zero if it either destroyed the * association OR the association is already destroyed. */ int sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_inpcbfree, int from_location) { int i; struct sctp_association *asoc; struct sctp_nets *net, *nnet; struct sctp_laddr *laddr, *naddr; struct sctp_tmit_chunk *chk, *nchk; struct sctp_asconf_addr *aparam, *naparam; struct sctp_asconf_ack *aack, *naack; struct sctp_stream_reset_list *strrst, *nstrrst; struct sctp_queued_to_read *sq, *nsq; struct sctp_stream_queue_pending *sp, *nsp; sctp_sharedkey_t *shared_key, *nshared_key; struct socket *so; /* first, lets purge the entry from the hash table. */ #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, stcb, 6); #endif if (stcb->asoc.state == 0) { #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, NULL, 7); #endif /* there is no asoc, really TSNH :-0 */ return (1); } if (stcb->asoc.alternate) { sctp_free_remote_addr(stcb->asoc.alternate); stcb->asoc.alternate = NULL; } /* TEMP CODE */ if (stcb->freed_from_where == 0) { /* Only record the first place free happened from */ stcb->freed_from_where = from_location; } /* TEMP CODE */ asoc = &stcb->asoc; if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) /* nothing around */ so = NULL; else so = inp->sctp_socket; /* * We used timer based freeing if a reader or writer is in the way. * So we first check if we are actually being called from a timer, * if so we abort early if a reader or writer is still in the way. */ if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) && (from_inpcbfree == SCTP_NORMAL_PROC)) { /* * is it the timer driving us? if so are the reader/writers * gone? */ if (stcb->asoc.refcnt) { /* nope, reader or writer in the way */ sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL); /* no asoc destroyed */ SCTP_TCB_UNLOCK(stcb); #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, stcb, 8); #endif return (0); } } /* now clean up any other timers */ (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer); asoc->dack_timer.self = NULL; (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer); /*- * For stream reset we don't blast this unless * it is a str-reset timer, it might be the * free-asoc timer which we DON'T want to * disturb. */ if (asoc->strreset_timer.type == SCTP_TIMER_TYPE_STRRESET) asoc->strreset_timer.self = NULL; (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer); asoc->asconf_timer.self = NULL; (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer); asoc->autoclose_timer.self = NULL; (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer); asoc->shut_guard_timer.self = NULL; (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer); asoc->delayed_event_timer.self = NULL; /* Mobility adaptation */ (void)SCTP_OS_TIMER_STOP(&asoc->delete_prim_timer.timer); asoc->delete_prim_timer.self = NULL; TAILQ_FOREACH(net, &asoc->nets, sctp_next) { (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer); net->rxt_timer.self = NULL; (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer); net->pmtu_timer.self = NULL; (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer); net->hb_timer.self = NULL; } /* Now the read queue needs to be cleaned up (only once) */ if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0) { stcb->asoc.state |= SCTP_STATE_ABOUT_TO_BE_FREED; SCTP_INP_READ_LOCK(inp); TAILQ_FOREACH(sq, &inp->read_queue, next) { if (sq->stcb == stcb) { sq->do_not_ref_stcb = 1; sq->sinfo_cumtsn = stcb->asoc.cumulative_tsn; /* * If there is no end, there never will be * now. */ if (sq->end_added == 0) { /* Held for PD-API clear that. */ sq->pdapi_aborted = 1; sq->held_length = 0; if (sctp_stcb_is_feature_on(inp, stcb, SCTP_PCB_FLAGS_PDAPIEVNT) && (so != NULL)) { /* * Need to add a PD-API * aborted indication. * Setting the control_pdapi * assures that it will be * added right after this * msg. */ uint32_t strseq; stcb->asoc.control_pdapi = sq; strseq = (sq->sinfo_stream << 16) | sq->sinfo_ssn; sctp_ulp_notify(SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION, stcb, SCTP_PARTIAL_DELIVERY_ABORTED, (void *)&strseq, SCTP_SO_LOCKED); stcb->asoc.control_pdapi = NULL; } } /* Add an end to wake them */ sq->end_added = 1; } } SCTP_INP_READ_UNLOCK(inp); if (stcb->block_entry) { SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_PCB, ECONNRESET); stcb->block_entry->error = ECONNRESET; stcb->block_entry = NULL; } } if ((stcb->asoc.refcnt) || (stcb->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE)) { /* * Someone holds a reference OR the socket is unaccepted * yet. */ if ((stcb->asoc.refcnt) || (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) { stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE; sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL); } SCTP_TCB_UNLOCK(stcb); if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) /* nothing around */ so = NULL; if (so) { /* Wake any reader/writers */ sctp_sorwakeup(inp, so); sctp_sowwakeup(inp, so); } #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, stcb, 9); #endif /* no asoc destroyed */ return (0); } #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, stcb, 10); #endif /* * When I reach here, no others want to kill the assoc yet.. and I * own the lock. Now its possible an abort comes in when I do the * lock exchange below to grab all the locks to do the final take * out. to prevent this we increment the count, which will start a * timer and blow out above thus assuring us that we hold exclusive * killing of the asoc. Note that after getting back the TCB lock we * will go ahead and increment the counter back up and stop any * timer a passing stranger may have started :-S */ if (from_inpcbfree == SCTP_NORMAL_PROC) { atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_INP_INFO_WLOCK(); SCTP_INP_WLOCK(inp); SCTP_TCB_LOCK(stcb); } /* Double check the GONE flag */ if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) /* nothing around */ so = NULL; if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { /* * For TCP type we need special handling when we are * connected. We also include the peel'ed off ones to. */ if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { inp->sctp_flags &= ~SCTP_PCB_FLAGS_CONNECTED; inp->sctp_flags |= SCTP_PCB_FLAGS_WAS_CONNECTED; if (so) { SOCK_LOCK(so); if (so->so_rcv.sb_cc == 0) { so->so_state &= ~(SS_ISCONNECTING | SS_ISDISCONNECTING | SS_ISCONFIRMING | SS_ISCONNECTED); } socantrcvmore_locked(so); sctp_sowwakeup(inp, so); sctp_sorwakeup(inp, so); SCTP_SOWAKEUP(so); } } } /* * Make it invalid too, that way if its about to run it will abort * and return. */ /* re-increment the lock */ if (from_inpcbfree == SCTP_NORMAL_PROC) { atomic_add_int(&stcb->asoc.refcnt, -1); } if (stcb->asoc.refcnt) { stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE; sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL); if (from_inpcbfree == SCTP_NORMAL_PROC) { SCTP_INP_INFO_WUNLOCK(); SCTP_INP_WUNLOCK(inp); } SCTP_TCB_UNLOCK(stcb); return (0); } asoc->state = 0; if (inp->sctp_tcbhash) { LIST_REMOVE(stcb, sctp_tcbhash); } if (stcb->asoc.in_asocid_hash) { LIST_REMOVE(stcb, sctp_tcbasocidhash); } /* Now lets remove it from the list of ALL associations in the EP */ LIST_REMOVE(stcb, sctp_tcblist); if (from_inpcbfree == SCTP_NORMAL_PROC) { SCTP_INP_INCR_REF(inp); SCTP_INP_WUNLOCK(inp); } /* pull from vtag hash */ LIST_REMOVE(stcb, sctp_asocs); sctp_add_vtag_to_timewait(asoc->my_vtag, SCTP_BASE_SYSCTL(sctp_vtag_time_wait), inp->sctp_lport, stcb->rport); /* * Now restop the timers to be sure this is paranoia at is finest! */ (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer); (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer); (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer); (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer); (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer); (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer); (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer); TAILQ_FOREACH(net, &asoc->nets, sctp_next) { (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer); (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer); (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer); } asoc->strreset_timer.type = SCTP_TIMER_TYPE_NONE; /* * The chunk lists and such SHOULD be empty but we check them just * in case. */ /* anything on the wheel needs to be removed */ for (i = 0; i < asoc->streamoutcnt; i++) { struct sctp_stream_out *outs; outs = &asoc->strmout[i]; /* now clean up any chunks here */ TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) { TAILQ_REMOVE(&outs->outqueue, sp, next); sctp_free_spbufspace(stcb, asoc, sp); if (sp->data) { if (so) { /* Still an open socket - report */ sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb, 0, (void *)sp, SCTP_SO_LOCKED); } if (sp->data) { sctp_m_freem(sp->data); sp->data = NULL; sp->tail_mbuf = NULL; sp->length = 0; } } if (sp->net) { sctp_free_remote_addr(sp->net); sp->net = NULL; } sctp_free_a_strmoq(stcb, sp, SCTP_SO_LOCKED); } } /* sa_ignore FREED_MEMORY */ TAILQ_FOREACH_SAFE(strrst, &asoc->resetHead, next_resp, nstrrst) { TAILQ_REMOVE(&asoc->resetHead, strrst, next_resp); SCTP_FREE(strrst, SCTP_M_STRESET); } TAILQ_FOREACH_SAFE(sq, &asoc->pending_reply_queue, next, nsq) { TAILQ_REMOVE(&asoc->pending_reply_queue, sq, next); if (sq->data) { sctp_m_freem(sq->data); sq->data = NULL; } sctp_free_remote_addr(sq->whoFrom); sq->whoFrom = NULL; sq->stcb = NULL; /* Free the ctl entry */ - SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq); - SCTP_DECR_READQ_COUNT(); + sctp_free_a_readq(stcb, sq); /* sa_ignore FREED_MEMORY */ } TAILQ_FOREACH_SAFE(chk, &asoc->free_chunks, sctp_next, nchk) { TAILQ_REMOVE(&asoc->free_chunks, chk, sctp_next); if (chk->data) { sctp_m_freem(chk->data); chk->data = NULL; } if (chk->holds_key_ref) sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED); SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk); SCTP_DECR_CHK_COUNT(); atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1); asoc->free_chunk_cnt--; /* sa_ignore FREED_MEMORY */ } /* pending send queue SHOULD be empty */ TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) { if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) { asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--; #ifdef INVARIANTS } else { panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number); #endif } TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next); if (chk->data) { if (so) { /* Still a socket? */ sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, chk, SCTP_SO_LOCKED); } if (chk->data) { sctp_m_freem(chk->data); chk->data = NULL; } } if (chk->holds_key_ref) sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED); if (chk->whoTo) { sctp_free_remote_addr(chk->whoTo); chk->whoTo = NULL; } SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk); SCTP_DECR_CHK_COUNT(); /* sa_ignore FREED_MEMORY */ } /* sent queue SHOULD be empty */ TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) { if (chk->sent != SCTP_DATAGRAM_NR_ACKED) { if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) { asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--; #ifdef INVARIANTS } else { panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number); #endif } } TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next); if (chk->data) { if (so) { /* Still a socket? */ sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, chk, SCTP_SO_LOCKED); } if (chk->data) { sctp_m_freem(chk->data); chk->data = NULL; } } if (chk->holds_key_ref) sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED); sctp_free_remote_addr(chk->whoTo); SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk); SCTP_DECR_CHK_COUNT(); /* sa_ignore FREED_MEMORY */ } #ifdef INVARIANTS for (i = 0; i < stcb->asoc.streamoutcnt; i++) { if (stcb->asoc.strmout[i].chunks_on_queues > 0) { panic("%u chunks left for stream %u.", stcb->asoc.strmout[i].chunks_on_queues, i); } } #endif /* control queue MAY not be empty */ TAILQ_FOREACH_SAFE(chk, &asoc->control_send_queue, sctp_next, nchk) { TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next); if (chk->data) { sctp_m_freem(chk->data); chk->data = NULL; } if (chk->holds_key_ref) sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED); sctp_free_remote_addr(chk->whoTo); SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk); SCTP_DECR_CHK_COUNT(); /* sa_ignore FREED_MEMORY */ } /* ASCONF queue MAY not be empty */ TAILQ_FOREACH_SAFE(chk, &asoc->asconf_send_queue, sctp_next, nchk) { TAILQ_REMOVE(&asoc->asconf_send_queue, chk, sctp_next); if (chk->data) { sctp_m_freem(chk->data); chk->data = NULL; } if (chk->holds_key_ref) sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED); sctp_free_remote_addr(chk->whoTo); SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk); SCTP_DECR_CHK_COUNT(); /* sa_ignore FREED_MEMORY */ } - TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) { - TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next); - if (chk->data) { - sctp_m_freem(chk->data); - chk->data = NULL; - } - if (chk->holds_key_ref) - sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED); - sctp_free_remote_addr(chk->whoTo); - SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk); - SCTP_DECR_CHK_COUNT(); - /* sa_ignore FREED_MEMORY */ - } - if (asoc->mapping_array) { SCTP_FREE(asoc->mapping_array, SCTP_M_MAP); asoc->mapping_array = NULL; } if (asoc->nr_mapping_array) { SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP); asoc->nr_mapping_array = NULL; } /* the stream outs */ if (asoc->strmout) { SCTP_FREE(asoc->strmout, SCTP_M_STRMO); asoc->strmout = NULL; } asoc->strm_realoutsize = asoc->streamoutcnt = 0; if (asoc->strmin) { - struct sctp_queued_to_read *ctl, *nctl; - for (i = 0; i < asoc->streamincnt; i++) { - TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[i].inqueue, next, nctl) { - TAILQ_REMOVE(&asoc->strmin[i].inqueue, ctl, next); - sctp_free_remote_addr(ctl->whoFrom); - if (ctl->data) { - sctp_m_freem(ctl->data); - ctl->data = NULL; - } - /* - * We don't free the address here since all - * the net's were freed above. - */ - SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl); - SCTP_DECR_READQ_COUNT(); - } + sctp_clean_up_stream(stcb, &asoc->strmin[i].inqueue); + sctp_clean_up_stream(stcb, &asoc->strmin[i].uno_inqueue); } SCTP_FREE(asoc->strmin, SCTP_M_STRMI); asoc->strmin = NULL; } asoc->streamincnt = 0; TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) { #ifdef INVARIANTS if (SCTP_BASE_INFO(ipi_count_raddr) == 0) { panic("no net's left alloc'ed, or list points to itself"); } #endif TAILQ_REMOVE(&asoc->nets, net, sctp_next); sctp_free_remote_addr(net); } LIST_FOREACH_SAFE(laddr, &asoc->sctp_restricted_addrs, sctp_nxt_addr, naddr) { /* sa_ignore FREED_MEMORY */ sctp_remove_laddr(laddr); } /* pending asconf (address) parameters */ TAILQ_FOREACH_SAFE(aparam, &asoc->asconf_queue, next, naparam) { /* sa_ignore FREED_MEMORY */ TAILQ_REMOVE(&asoc->asconf_queue, aparam, next); SCTP_FREE(aparam, SCTP_M_ASC_ADDR); } TAILQ_FOREACH_SAFE(aack, &asoc->asconf_ack_sent, next, naack) { /* sa_ignore FREED_MEMORY */ TAILQ_REMOVE(&asoc->asconf_ack_sent, aack, next); if (aack->data != NULL) { sctp_m_freem(aack->data); } SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), aack); } /* clean up auth stuff */ if (asoc->local_hmacs) sctp_free_hmaclist(asoc->local_hmacs); if (asoc->peer_hmacs) sctp_free_hmaclist(asoc->peer_hmacs); if (asoc->local_auth_chunks) sctp_free_chunklist(asoc->local_auth_chunks); if (asoc->peer_auth_chunks) sctp_free_chunklist(asoc->peer_auth_chunks); sctp_free_authinfo(&asoc->authinfo); LIST_FOREACH_SAFE(shared_key, &asoc->shared_keys, next, nshared_key) { LIST_REMOVE(shared_key, next); sctp_free_sharedkey(shared_key); /* sa_ignore FREED_MEMORY */ } /* Insert new items here :> */ /* Get rid of LOCK */ SCTP_TCB_UNLOCK(stcb); SCTP_TCB_LOCK_DESTROY(stcb); SCTP_TCB_SEND_LOCK_DESTROY(stcb); if (from_inpcbfree == SCTP_NORMAL_PROC) { SCTP_INP_INFO_WUNLOCK(); SCTP_INP_RLOCK(inp); } #ifdef SCTP_TRACK_FREED_ASOCS if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { /* now clean up the tasoc itself */ SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb); SCTP_DECR_ASOC_COUNT(); } else { LIST_INSERT_HEAD(&inp->sctp_asoc_free_list, stcb, sctp_tcblist); } #else SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb); SCTP_DECR_ASOC_COUNT(); #endif if (from_inpcbfree == SCTP_NORMAL_PROC) { if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { /* * If its NOT the inp_free calling us AND sctp_close * as been called, we call back... */ SCTP_INP_RUNLOCK(inp); /* * This will start the kill timer (if we are the * last one) since we hold an increment yet. But * this is the only safe way to do this since * otherwise if the socket closes at the same time * we are here we might collide in the cleanup. */ sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE, SCTP_CALLED_DIRECTLY_NOCMPSET); SCTP_INP_DECR_REF(inp); goto out_of; } else { /* The socket is still open. */ SCTP_INP_DECR_REF(inp); } } if (from_inpcbfree == SCTP_NORMAL_PROC) { SCTP_INP_RUNLOCK(inp); } out_of: /* destroyed the asoc */ #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, NULL, 11); #endif return (1); } /* * determine if a destination is "reachable" based upon the addresses bound * to the current endpoint (e.g. only v4 or v6 currently bound) */ /* * FIX: if we allow assoc-level bindx(), then this needs to be fixed to use * assoc level v4/v6 flags, as the assoc *may* not have the same address * types bound as its endpoint */ int sctp_destination_is_reachable(struct sctp_tcb *stcb, struct sockaddr *destaddr) { struct sctp_inpcb *inp; int answer; /* * No locks here, the TCB, in all cases is already locked and an * assoc is up. There is either a INP lock by the caller applied (in * asconf case when deleting an address) or NOT in the HB case, * however if HB then the INP increment is up and the INP will not * be removed (on top of the fact that we have a TCB lock). So we * only want to read the sctp_flags, which is either bound-all or * not.. no protection needed since once an assoc is up you can't be * changing your binding. */ inp = stcb->sctp_ep; if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { /* if bound all, destination is not restricted */ /* * RRS: Question during lock work: Is this correct? If you * are bound-all you still might need to obey the V4--V6 * flags??? IMO this bound-all stuff needs to be removed! */ return (1); } /* NOTE: all "scope" checks are done when local addresses are added */ switch (destaddr->sa_family) { #ifdef INET6 case AF_INET6: answer = inp->ip_inp.inp.inp_vflag & INP_IPV6; break; #endif #ifdef INET case AF_INET: answer = inp->ip_inp.inp.inp_vflag & INP_IPV4; break; #endif default: /* invalid family, so it's unreachable */ answer = 0; break; } return (answer); } /* * update the inp_vflags on an endpoint */ static void sctp_update_ep_vflag(struct sctp_inpcb *inp) { struct sctp_laddr *laddr; /* first clear the flag */ inp->ip_inp.inp.inp_vflag = 0; /* set the flag based on addresses on the ep list */ LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { if (laddr->ifa == NULL) { SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n", __func__); continue; } if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) { continue; } switch (laddr->ifa->address.sa.sa_family) { #ifdef INET6 case AF_INET6: inp->ip_inp.inp.inp_vflag |= INP_IPV6; break; #endif #ifdef INET case AF_INET: inp->ip_inp.inp.inp_vflag |= INP_IPV4; break; #endif default: break; } } } /* * Add the address to the endpoint local address list There is nothing to be * done if we are bound to all addresses */ void sctp_add_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa, uint32_t action) { struct sctp_laddr *laddr; struct sctp_tcb *stcb; int fnd, error = 0; fnd = 0; if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { /* You are already bound to all. You have it already */ return; } #ifdef INET6 if (ifa->address.sa.sa_family == AF_INET6) { if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) { /* Can't bind a non-useable addr. */ return; } } #endif /* first, is it already present? */ LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { if (laddr->ifa == ifa) { fnd = 1; break; } } if (fnd == 0) { /* Not in the ep list */ error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, action); if (error != 0) return; inp->laddr_count++; /* update inp_vflag flags */ switch (ifa->address.sa.sa_family) { #ifdef INET6 case AF_INET6: inp->ip_inp.inp.inp_vflag |= INP_IPV6; break; #endif #ifdef INET case AF_INET: inp->ip_inp.inp.inp_vflag |= INP_IPV4; break; #endif default: break; } LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { sctp_add_local_addr_restricted(stcb, ifa); } } return; } /* * select a new (hopefully reachable) destination net (should only be used * when we deleted an ep addr that is the only usable source address to reach * the destination net) */ static void sctp_select_primary_destination(struct sctp_tcb *stcb) { struct sctp_nets *net; TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { /* for now, we'll just pick the first reachable one we find */ if (net->dest_state & SCTP_ADDR_UNCONFIRMED) continue; if (sctp_destination_is_reachable(stcb, (struct sockaddr *)&net->ro._l_addr)) { /* found a reachable destination */ stcb->asoc.primary_destination = net; } } /* I can't there from here! ...we're gonna die shortly... */ } /* * Delete the address from the endpoint local address list. There is nothing * to be done if we are bound to all addresses */ void sctp_del_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa) { struct sctp_laddr *laddr; int fnd; fnd = 0; if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { /* You are already bound to all. You have it already */ return; } LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { if (laddr->ifa == ifa) { fnd = 1; break; } } if (fnd && (inp->laddr_count < 2)) { /* can't delete unless there are at LEAST 2 addresses */ return; } if (fnd) { /* * clean up any use of this address go through our * associations and clear any last_used_address that match * this one for each assoc, see if a new primary_destination * is needed */ struct sctp_tcb *stcb; /* clean up "next_addr_touse" */ if (inp->next_addr_touse == laddr) /* delete this address */ inp->next_addr_touse = NULL; /* clean up "last_used_address" */ LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { struct sctp_nets *net; SCTP_TCB_LOCK(stcb); if (stcb->asoc.last_used_address == laddr) /* delete this address */ stcb->asoc.last_used_address = NULL; /* * Now spin through all the nets and purge any ref * to laddr */ TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { if (net->ro._s_addr == laddr->ifa) { /* Yep, purge src address selected */ sctp_rtentry_t *rt; /* delete this address if cached */ rt = net->ro.ro_rt; if (rt != NULL) { RTFREE(rt); net->ro.ro_rt = NULL; } sctp_free_ifa(net->ro._s_addr); net->ro._s_addr = NULL; net->src_addr_selected = 0; } } SCTP_TCB_UNLOCK(stcb); } /* for each tcb */ /* remove it from the ep list */ sctp_remove_laddr(laddr); inp->laddr_count--; /* update inp_vflag flags */ sctp_update_ep_vflag(inp); } return; } /* * Add the address to the TCB local address restricted list. * This is a "pending" address list (eg. addresses waiting for an * ASCONF-ACK response) and cannot be used as a valid source address. */ void sctp_add_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa) { struct sctp_laddr *laddr; struct sctpladdr *list; /* * Assumes TCB is locked.. and possibly the INP. May need to * confirm/fix that if we need it and is not the case. */ list = &stcb->asoc.sctp_restricted_addrs; #ifdef INET6 if (ifa->address.sa.sa_family == AF_INET6) { if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) { /* Can't bind a non-existent addr. */ return; } } #endif /* does the address already exist? */ LIST_FOREACH(laddr, list, sctp_nxt_addr) { if (laddr->ifa == ifa) { return; } } /* add to the list */ (void)sctp_insert_laddr(list, ifa, 0); return; } /* * Remove a local address from the TCB local address restricted list */ void sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa) { struct sctp_inpcb *inp; struct sctp_laddr *laddr; /* * This is called by asconf work. It is assumed that a) The TCB is * locked and b) The INP is locked. This is true in as much as I can * trace through the entry asconf code where I did these locks. * Again, the ASCONF code is a bit different in that it does lock * the INP during its work often times. This must be since we don't * want other proc's looking up things while what they are looking * up is changing :-D */ inp = stcb->sctp_ep; /* if subset bound and don't allow ASCONF's, can't delete last */ if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) && sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) { if (stcb->sctp_ep->laddr_count < 2) { /* can't delete last address */ return; } } LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) { /* remove the address if it exists */ if (laddr->ifa == NULL) continue; if (laddr->ifa == ifa) { sctp_remove_laddr(laddr); return; } } /* address not found! */ return; } /* * Temporarily remove for __APPLE__ until we use the Tiger equivalents */ /* sysctl */ static int sctp_max_number_of_assoc = SCTP_MAX_NUM_OF_ASOC; static int sctp_scale_up_for_address = SCTP_SCALE_FOR_ADDR; #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP) struct sctp_mcore_ctrl *sctp_mcore_workers = NULL; int *sctp_cpuarry = NULL; void sctp_queue_to_mcore(struct mbuf *m, int off, int cpu_to_use) { /* Queue a packet to a processor for the specified core */ struct sctp_mcore_queue *qent; struct sctp_mcore_ctrl *wkq; int need_wake = 0; if (sctp_mcore_workers == NULL) { /* Something went way bad during setup */ sctp_input_with_port(m, off, 0); return; } SCTP_MALLOC(qent, struct sctp_mcore_queue *, (sizeof(struct sctp_mcore_queue)), SCTP_M_MCORE); if (qent == NULL) { /* This is trouble */ sctp_input_with_port(m, off, 0); return; } qent->vn = curvnet; qent->m = m; qent->off = off; qent->v6 = 0; wkq = &sctp_mcore_workers[cpu_to_use]; SCTP_MCORE_QLOCK(wkq); TAILQ_INSERT_TAIL(&wkq->que, qent, next); if (wkq->running == 0) { need_wake = 1; } SCTP_MCORE_QUNLOCK(wkq); if (need_wake) { wakeup(&wkq->running); } } static void sctp_mcore_thread(void *arg) { struct sctp_mcore_ctrl *wkq; struct sctp_mcore_queue *qent; wkq = (struct sctp_mcore_ctrl *)arg; struct mbuf *m; int off, v6; /* Wait for first tickle */ SCTP_MCORE_LOCK(wkq); wkq->running = 0; msleep(&wkq->running, &wkq->core_mtx, 0, "wait for pkt", 0); SCTP_MCORE_UNLOCK(wkq); /* Bind to our cpu */ thread_lock(curthread); sched_bind(curthread, wkq->cpuid); thread_unlock(curthread); /* Now lets start working */ SCTP_MCORE_LOCK(wkq); /* Now grab lock and go */ for (;;) { SCTP_MCORE_QLOCK(wkq); skip_sleep: wkq->running = 1; qent = TAILQ_FIRST(&wkq->que); if (qent) { TAILQ_REMOVE(&wkq->que, qent, next); SCTP_MCORE_QUNLOCK(wkq); CURVNET_SET(qent->vn); m = qent->m; off = qent->off; v6 = qent->v6; SCTP_FREE(qent, SCTP_M_MCORE); if (v6 == 0) { sctp_input_with_port(m, off, 0); } else { SCTP_PRINTF("V6 not yet supported\n"); sctp_m_freem(m); } CURVNET_RESTORE(); SCTP_MCORE_QLOCK(wkq); } wkq->running = 0; if (!TAILQ_EMPTY(&wkq->que)) { goto skip_sleep; } SCTP_MCORE_QUNLOCK(wkq); msleep(&wkq->running, &wkq->core_mtx, 0, "wait for pkt", 0); } } static void sctp_startup_mcore_threads(void) { int i, cpu; if (mp_ncpus == 1) return; if (sctp_mcore_workers != NULL) { /* * Already been here in some previous vnet? */ return; } SCTP_MALLOC(sctp_mcore_workers, struct sctp_mcore_ctrl *, ((mp_maxid + 1) * sizeof(struct sctp_mcore_ctrl)), SCTP_M_MCORE); if (sctp_mcore_workers == NULL) { /* TSNH I hope */ return; } memset(sctp_mcore_workers, 0, ((mp_maxid + 1) * sizeof(struct sctp_mcore_ctrl))); /* Init the structures */ for (i = 0; i <= mp_maxid; i++) { TAILQ_INIT(&sctp_mcore_workers[i].que); SCTP_MCORE_LOCK_INIT(&sctp_mcore_workers[i]); SCTP_MCORE_QLOCK_INIT(&sctp_mcore_workers[i]); sctp_mcore_workers[i].cpuid = i; } if (sctp_cpuarry == NULL) { SCTP_MALLOC(sctp_cpuarry, int *, (mp_ncpus * sizeof(int)), SCTP_M_MCORE); i = 0; CPU_FOREACH(cpu) { sctp_cpuarry[i] = cpu; i++; } } /* Now start them all */ CPU_FOREACH(cpu) { (void)kproc_create(sctp_mcore_thread, (void *)&sctp_mcore_workers[cpu], &sctp_mcore_workers[cpu].thread_proc, RFPROC, SCTP_KTHREAD_PAGES, SCTP_MCORE_NAME); } } #endif void sctp_pcb_init() { /* * SCTP initialization for the PCB structures should be called by * the sctp_init() funciton. */ int i; struct timeval tv; if (SCTP_BASE_VAR(sctp_pcb_initialized) != 0) { /* error I was called twice */ return; } SCTP_BASE_VAR(sctp_pcb_initialized) = 1; #if defined(SCTP_LOCAL_TRACE_BUF) bzero(&SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log)); #endif #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT) SCTP_MALLOC(SCTP_BASE_STATS, struct sctpstat *, ((mp_maxid + 1) * sizeof(struct sctpstat)), SCTP_M_MCORE); #endif (void)SCTP_GETTIME_TIMEVAL(&tv); #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT) bzero(SCTP_BASE_STATS, (sizeof(struct sctpstat) * (mp_maxid + 1))); SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_sec = (uint32_t) tv.tv_sec; SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_usec = (uint32_t) tv.tv_usec; #else bzero(&SCTP_BASE_STATS, sizeof(struct sctpstat)); SCTP_BASE_STAT(sctps_discontinuitytime).tv_sec = (uint32_t) tv.tv_sec; SCTP_BASE_STAT(sctps_discontinuitytime).tv_usec = (uint32_t) tv.tv_usec; #endif /* init the empty list of (All) Endpoints */ LIST_INIT(&SCTP_BASE_INFO(listhead)); /* init the hash table of endpoints */ TUNABLE_INT_FETCH("net.inet.sctp.tcbhashsize", &SCTP_BASE_SYSCTL(sctp_hashtblsize)); TUNABLE_INT_FETCH("net.inet.sctp.pcbhashsize", &SCTP_BASE_SYSCTL(sctp_pcbtblsize)); TUNABLE_INT_FETCH("net.inet.sctp.chunkscale", &SCTP_BASE_SYSCTL(sctp_chunkscale)); SCTP_BASE_INFO(sctp_asochash) = SCTP_HASH_INIT((SCTP_BASE_SYSCTL(sctp_hashtblsize) * 31), &SCTP_BASE_INFO(hashasocmark)); SCTP_BASE_INFO(sctp_ephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize), &SCTP_BASE_INFO(hashmark)); SCTP_BASE_INFO(sctp_tcpephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize), &SCTP_BASE_INFO(hashtcpmark)); SCTP_BASE_INFO(hashtblsize) = SCTP_BASE_SYSCTL(sctp_hashtblsize); SCTP_BASE_INFO(sctp_vrfhash) = SCTP_HASH_INIT(SCTP_SIZE_OF_VRF_HASH, &SCTP_BASE_INFO(hashvrfmark)); SCTP_BASE_INFO(vrf_ifn_hash) = SCTP_HASH_INIT(SCTP_VRF_IFN_HASH_SIZE, &SCTP_BASE_INFO(vrf_ifn_hashmark)); /* init the zones */ /* * FIX ME: Should check for NULL returns, but if it does fail we are * doomed to panic anyways... add later maybe. */ SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_ep), "sctp_ep", sizeof(struct sctp_inpcb), maxsockets); SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asoc), "sctp_asoc", sizeof(struct sctp_tcb), sctp_max_number_of_assoc); SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_laddr), "sctp_laddr", sizeof(struct sctp_laddr), (sctp_max_number_of_assoc * sctp_scale_up_for_address)); SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_net), "sctp_raddr", sizeof(struct sctp_nets), (sctp_max_number_of_assoc * sctp_scale_up_for_address)); SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_chunk), "sctp_chunk", sizeof(struct sctp_tmit_chunk), (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale))); SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_readq), "sctp_readq", sizeof(struct sctp_queued_to_read), (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale))); SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_strmoq), "sctp_stream_msg_out", sizeof(struct sctp_stream_queue_pending), (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale))); SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf), "sctp_asconf", sizeof(struct sctp_asconf), (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale))); SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf_ack), "sctp_asconf_ack", sizeof(struct sctp_asconf_ack), (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale))); /* Master Lock INIT for info structure */ SCTP_INP_INFO_LOCK_INIT(); SCTP_STATLOG_INIT_LOCK(); SCTP_IPI_COUNT_INIT(); SCTP_IPI_ADDR_INIT(); #ifdef SCTP_PACKET_LOGGING SCTP_IP_PKTLOG_INIT(); #endif LIST_INIT(&SCTP_BASE_INFO(addr_wq)); SCTP_WQ_ADDR_INIT(); /* not sure if we need all the counts */ SCTP_BASE_INFO(ipi_count_ep) = 0; /* assoc/tcb zone info */ SCTP_BASE_INFO(ipi_count_asoc) = 0; /* local addrlist zone info */ SCTP_BASE_INFO(ipi_count_laddr) = 0; /* remote addrlist zone info */ SCTP_BASE_INFO(ipi_count_raddr) = 0; /* chunk info */ SCTP_BASE_INFO(ipi_count_chunk) = 0; /* socket queue zone info */ SCTP_BASE_INFO(ipi_count_readq) = 0; /* stream out queue cont */ SCTP_BASE_INFO(ipi_count_strmoq) = 0; SCTP_BASE_INFO(ipi_free_strmoq) = 0; SCTP_BASE_INFO(ipi_free_chunks) = 0; SCTP_OS_TIMER_INIT(&SCTP_BASE_INFO(addr_wq_timer.timer)); /* Init the TIMEWAIT list */ for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) { LIST_INIT(&SCTP_BASE_INFO(vtag_timewait)[i]); } sctp_startup_iterator(); #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP) sctp_startup_mcore_threads(); #endif /* * INIT the default VRF which for BSD is the only one, other O/S's * may have more. But initially they must start with one and then * add the VRF's as addresses are added. */ sctp_init_vrf_list(SCTP_DEFAULT_VRF); } /* * Assumes that the SCTP_BASE_INFO() lock is NOT held. */ void sctp_pcb_finish(void) { struct sctp_vrflist *vrf_bucket; struct sctp_vrf *vrf, *nvrf; struct sctp_ifn *ifn, *nifn; struct sctp_ifa *ifa, *nifa; struct sctpvtaghead *chain; struct sctp_tagblock *twait_block, *prev_twait_block; struct sctp_laddr *wi, *nwi; int i; struct sctp_iterator *it, *nit; if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) { SCTP_PRINTF("%s: race condition on teardown.\n", __func__); return; } SCTP_BASE_VAR(sctp_pcb_initialized) = 0; /* * In FreeBSD the iterator thread never exits but we do clean up. * The only way FreeBSD reaches here is if we have VRF's but we * still add the ifdef to make it compile on old versions. */ retry: SCTP_IPI_ITERATOR_WQ_LOCK(); /* * sctp_iterator_worker() might be working on an it entry without * holding the lock. We won't find it on the list either and * continue and free/destroy it. While holding the lock, spin, to * avoid the race condition as sctp_iterator_worker() will have to * wait to re-aquire the lock. */ if (sctp_it_ctl.iterator_running != 0 || sctp_it_ctl.cur_it != NULL) { SCTP_IPI_ITERATOR_WQ_UNLOCK(); SCTP_PRINTF("%s: Iterator running while we held the lock. Retry. " "cur_it=%p\n", __func__, sctp_it_ctl.cur_it); DELAY(10); goto retry; } TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) { if (it->vn != curvnet) { continue; } TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr); if (it->function_atend != NULL) { (*it->function_atend) (it->pointer, it->val); } SCTP_FREE(it, SCTP_M_ITER); } SCTP_IPI_ITERATOR_WQ_UNLOCK(); SCTP_ITERATOR_LOCK(); if ((sctp_it_ctl.cur_it) && (sctp_it_ctl.cur_it->vn == curvnet)) { sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT; } SCTP_ITERATOR_UNLOCK(); SCTP_OS_TIMER_STOP_DRAIN(&SCTP_BASE_INFO(addr_wq_timer.timer)); SCTP_WQ_ADDR_LOCK(); LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) { LIST_REMOVE(wi, sctp_nxt_addr); SCTP_DECR_LADDR_COUNT(); if (wi->action == SCTP_DEL_IP_ADDRESS) { SCTP_FREE(wi->ifa, SCTP_M_IFA); } SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), wi); } SCTP_WQ_ADDR_UNLOCK(); /* * free the vrf/ifn/ifa lists and hashes (be sure address monitor is * destroyed first). */ vrf_bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(SCTP_DEFAULT_VRFID & SCTP_BASE_INFO(hashvrfmark))]; LIST_FOREACH_SAFE(vrf, vrf_bucket, next_vrf, nvrf) { LIST_FOREACH_SAFE(ifn, &vrf->ifnlist, next_ifn, nifn) { LIST_FOREACH_SAFE(ifa, &ifn->ifalist, next_ifa, nifa) { /* free the ifa */ LIST_REMOVE(ifa, next_bucket); LIST_REMOVE(ifa, next_ifa); SCTP_FREE(ifa, SCTP_M_IFA); } /* free the ifn */ LIST_REMOVE(ifn, next_bucket); LIST_REMOVE(ifn, next_ifn); SCTP_FREE(ifn, SCTP_M_IFN); } SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark); /* free the vrf */ LIST_REMOVE(vrf, next_vrf); SCTP_FREE(vrf, SCTP_M_VRF); } /* free the vrf hashes */ SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_vrfhash), SCTP_BASE_INFO(hashvrfmark)); SCTP_HASH_FREE(SCTP_BASE_INFO(vrf_ifn_hash), SCTP_BASE_INFO(vrf_ifn_hashmark)); /* * free the TIMEWAIT list elements malloc'd in the function * sctp_add_vtag_to_timewait()... */ for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) { chain = &SCTP_BASE_INFO(vtag_timewait)[i]; if (!LIST_EMPTY(chain)) { prev_twait_block = NULL; LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) { if (prev_twait_block) { SCTP_FREE(prev_twait_block, SCTP_M_TIMW); } prev_twait_block = twait_block; } SCTP_FREE(prev_twait_block, SCTP_M_TIMW); } } /* free the locks and mutexes */ #ifdef SCTP_PACKET_LOGGING SCTP_IP_PKTLOG_DESTROY(); #endif SCTP_IPI_ADDR_DESTROY(); SCTP_STATLOG_DESTROY(); SCTP_INP_INFO_LOCK_DESTROY(); SCTP_WQ_ADDR_DESTROY(); /* Get rid of other stuff too. */ if (SCTP_BASE_INFO(sctp_asochash) != NULL) SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_asochash), SCTP_BASE_INFO(hashasocmark)); if (SCTP_BASE_INFO(sctp_ephash) != NULL) SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_ephash), SCTP_BASE_INFO(hashmark)); if (SCTP_BASE_INFO(sctp_tcpephash) != NULL) SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_tcpephash), SCTP_BASE_INFO(hashtcpmark)); SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_ep)); SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asoc)); SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_laddr)); SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_net)); SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_chunk)); SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_readq)); SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_strmoq)); SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf)); SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf_ack)); #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT) SCTP_FREE(SCTP_BASE_STATS, SCTP_M_MCORE); #endif } int sctp_load_addresses_from_init(struct sctp_tcb *stcb, struct mbuf *m, int offset, int limit, struct sockaddr *src, struct sockaddr *dst, struct sockaddr *altsa) { /* * grub through the INIT pulling addresses and loading them to the * nets structure in the asoc. The from address in the mbuf should * also be loaded (if it is not already). This routine can be called * with either INIT or INIT-ACK's as long as the m points to the IP * packet and the offset points to the beginning of the parameters. */ struct sctp_inpcb *inp; struct sctp_nets *net, *nnet, *net_tmp; struct sctp_paramhdr *phdr, parm_buf; struct sctp_tcb *stcb_tmp; uint16_t ptype, plen; struct sockaddr *sa; uint8_t random_store[SCTP_PARAM_BUFFER_SIZE]; struct sctp_auth_random *p_random = NULL; uint16_t random_len = 0; uint8_t hmacs_store[SCTP_PARAM_BUFFER_SIZE]; struct sctp_auth_hmac_algo *hmacs = NULL; uint16_t hmacs_len = 0; uint8_t saw_asconf = 0; uint8_t saw_asconf_ack = 0; uint8_t chunks_store[SCTP_PARAM_BUFFER_SIZE]; struct sctp_auth_chunk_list *chunks = NULL; uint16_t num_chunks = 0; sctp_key_t *new_key; uint32_t keylen; int got_random = 0, got_hmacs = 0, got_chklist = 0; uint8_t peer_supports_ecn; uint8_t peer_supports_prsctp; uint8_t peer_supports_auth; uint8_t peer_supports_asconf; uint8_t peer_supports_asconf_ack; uint8_t peer_supports_reconfig; uint8_t peer_supports_nrsack; uint8_t peer_supports_pktdrop; + uint8_t peer_supports_idata; #ifdef INET struct sockaddr_in sin; #endif #ifdef INET6 struct sockaddr_in6 sin6; #endif /* First get the destination address setup too. */ #ifdef INET memset(&sin, 0, sizeof(sin)); sin.sin_family = AF_INET; sin.sin_len = sizeof(sin); sin.sin_port = stcb->rport; #endif #ifdef INET6 memset(&sin6, 0, sizeof(sin6)); sin6.sin6_family = AF_INET6; sin6.sin6_len = sizeof(struct sockaddr_in6); sin6.sin6_port = stcb->rport; #endif if (altsa) { sa = altsa; } else { sa = src; } + peer_supports_idata = 0; peer_supports_ecn = 0; peer_supports_prsctp = 0; peer_supports_auth = 0; peer_supports_asconf = 0; peer_supports_reconfig = 0; peer_supports_nrsack = 0; peer_supports_pktdrop = 0; TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { /* mark all addresses that we have currently on the list */ net->dest_state |= SCTP_ADDR_NOT_IN_ASSOC; } /* does the source address already exist? if so skip it */ inp = stcb->sctp_ep; atomic_add_int(&stcb->asoc.refcnt, 1); stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net_tmp, dst, stcb); atomic_add_int(&stcb->asoc.refcnt, -1); if ((stcb_tmp == NULL && inp == stcb->sctp_ep) || inp == NULL) { /* we must add the source address */ /* no scope set here since we have a tcb already. */ switch (sa->sa_family) { #ifdef INET case AF_INET: if (stcb->asoc.scope.ipv4_addr_legal) { if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_2)) { return (-1); } } break; #endif #ifdef INET6 case AF_INET6: if (stcb->asoc.scope.ipv6_addr_legal) { if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_3)) { return (-2); } } break; #endif default: break; } } else { if (net_tmp != NULL && stcb_tmp == stcb) { net_tmp->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC; } else if (stcb_tmp != stcb) { /* It belongs to another association? */ if (stcb_tmp) SCTP_TCB_UNLOCK(stcb_tmp); return (-3); } } if (stcb->asoc.state == 0) { /* the assoc was freed? */ return (-4); } /* now we must go through each of the params. */ phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf)); while (phdr) { ptype = ntohs(phdr->param_type); plen = ntohs(phdr->param_length); /* * SCTP_PRINTF("ptype => %0x, plen => %d\n", * (uint32_t)ptype, (int)plen); */ if (offset + plen > limit) { break; } if (plen == 0) { break; } #ifdef INET if (ptype == SCTP_IPV4_ADDRESS) { if (stcb->asoc.scope.ipv4_addr_legal) { struct sctp_ipv4addr_param *p4, p4_buf; /* ok get the v4 address and check/add */ phdr = sctp_get_next_param(m, offset, (struct sctp_paramhdr *)&p4_buf, sizeof(p4_buf)); if (plen != sizeof(struct sctp_ipv4addr_param) || phdr == NULL) { return (-5); } p4 = (struct sctp_ipv4addr_param *)phdr; sin.sin_addr.s_addr = p4->addr; if (IN_MULTICAST(ntohl(sin.sin_addr.s_addr))) { /* Skip multi-cast addresses */ goto next_param; } if ((sin.sin_addr.s_addr == INADDR_BROADCAST) || (sin.sin_addr.s_addr == INADDR_ANY)) { goto next_param; } sa = (struct sockaddr *)&sin; inp = stcb->sctp_ep; atomic_add_int(&stcb->asoc.refcnt, 1); stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net, dst, stcb); atomic_add_int(&stcb->asoc.refcnt, -1); if ((stcb_tmp == NULL && inp == stcb->sctp_ep) || inp == NULL) { /* we must add the source address */ /* * no scope set since we have a tcb * already */ /* * we must validate the state again * here */ add_it_now: if (stcb->asoc.state == 0) { /* the assoc was freed? */ return (-7); } if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_4)) { return (-8); } } else if (stcb_tmp == stcb) { if (stcb->asoc.state == 0) { /* the assoc was freed? */ return (-10); } if (net != NULL) { /* clear flag */ net->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC; } } else { /* * strange, address is in another * assoc? straighten out locks. */ if (stcb_tmp) { if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) { struct mbuf *op_err; char msg[SCTP_DIAG_INFO_LEN]; /* * in setup state we * abort this guy */ snprintf(msg, sizeof(msg), "%s:%d at %s", __FILE__, __LINE__, __func__); op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), msg); sctp_abort_an_association(stcb_tmp->sctp_ep, stcb_tmp, op_err, SCTP_SO_NOT_LOCKED); goto add_it_now; } SCTP_TCB_UNLOCK(stcb_tmp); } if (stcb->asoc.state == 0) { /* the assoc was freed? */ return (-12); } return (-13); } } } else #endif #ifdef INET6 if (ptype == SCTP_IPV6_ADDRESS) { if (stcb->asoc.scope.ipv6_addr_legal) { /* ok get the v6 address and check/add */ struct sctp_ipv6addr_param *p6, p6_buf; phdr = sctp_get_next_param(m, offset, (struct sctp_paramhdr *)&p6_buf, sizeof(p6_buf)); if (plen != sizeof(struct sctp_ipv6addr_param) || phdr == NULL) { return (-14); } p6 = (struct sctp_ipv6addr_param *)phdr; memcpy((caddr_t)&sin6.sin6_addr, p6->addr, sizeof(p6->addr)); if (IN6_IS_ADDR_MULTICAST(&sin6.sin6_addr)) { /* Skip multi-cast addresses */ goto next_param; } if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) { /* * Link local make no sense without * scope */ goto next_param; } sa = (struct sockaddr *)&sin6; inp = stcb->sctp_ep; atomic_add_int(&stcb->asoc.refcnt, 1); stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net, dst, stcb); atomic_add_int(&stcb->asoc.refcnt, -1); if (stcb_tmp == NULL && (inp == stcb->sctp_ep || inp == NULL)) { /* * we must validate the state again * here */ add_it_now6: if (stcb->asoc.state == 0) { /* the assoc was freed? */ return (-16); } /* * we must add the address, no scope * set */ if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_5)) { return (-17); } } else if (stcb_tmp == stcb) { /* * we must validate the state again * here */ if (stcb->asoc.state == 0) { /* the assoc was freed? */ return (-19); } if (net != NULL) { /* clear flag */ net->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC; } } else { /* * strange, address is in another * assoc? straighten out locks. */ if (stcb_tmp) { if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) { struct mbuf *op_err; char msg[SCTP_DIAG_INFO_LEN]; /* * in setup state we * abort this guy */ snprintf(msg, sizeof(msg), "%s:%d at %s", __FILE__, __LINE__, __func__); op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), msg); sctp_abort_an_association(stcb_tmp->sctp_ep, stcb_tmp, op_err, SCTP_SO_NOT_LOCKED); goto add_it_now6; } SCTP_TCB_UNLOCK(stcb_tmp); } if (stcb->asoc.state == 0) { /* the assoc was freed? */ return (-21); } return (-22); } } } else #endif if (ptype == SCTP_ECN_CAPABLE) { peer_supports_ecn = 1; } else if (ptype == SCTP_ULP_ADAPTATION) { if (stcb->asoc.state != SCTP_STATE_OPEN) { struct sctp_adaptation_layer_indication ai, *aip; phdr = sctp_get_next_param(m, offset, (struct sctp_paramhdr *)&ai, sizeof(ai)); aip = (struct sctp_adaptation_layer_indication *)phdr; if (aip) { stcb->asoc.peers_adaptation = ntohl(aip->indication); stcb->asoc.adaptation_needed = 1; } } } else if (ptype == SCTP_SET_PRIM_ADDR) { struct sctp_asconf_addr_param lstore, *fee; int lptype; struct sockaddr *lsa = NULL; #ifdef INET struct sctp_asconf_addrv4_param *fii; #endif if (stcb->asoc.asconf_supported == 0) { return (-100); } if (plen > sizeof(lstore)) { return (-23); } phdr = sctp_get_next_param(m, offset, (struct sctp_paramhdr *)&lstore, min(plen, sizeof(lstore))); if (phdr == NULL) { return (-24); } fee = (struct sctp_asconf_addr_param *)phdr; lptype = ntohs(fee->addrp.ph.param_type); switch (lptype) { #ifdef INET case SCTP_IPV4_ADDRESS: if (plen != sizeof(struct sctp_asconf_addrv4_param)) { SCTP_PRINTF("Sizeof setprim in init/init ack not %d but %d - ignored\n", (int)sizeof(struct sctp_asconf_addrv4_param), plen); } else { fii = (struct sctp_asconf_addrv4_param *)fee; sin.sin_addr.s_addr = fii->addrp.addr; lsa = (struct sockaddr *)&sin; } break; #endif #ifdef INET6 case SCTP_IPV6_ADDRESS: if (plen != sizeof(struct sctp_asconf_addr_param)) { SCTP_PRINTF("Sizeof setprim (v6) in init/init ack not %d but %d - ignored\n", (int)sizeof(struct sctp_asconf_addr_param), plen); } else { memcpy(sin6.sin6_addr.s6_addr, fee->addrp.addr, sizeof(fee->addrp.addr)); lsa = (struct sockaddr *)&sin6; } break; #endif default: break; } if (lsa) { (void)sctp_set_primary_addr(stcb, sa, NULL); } } else if (ptype == SCTP_HAS_NAT_SUPPORT) { stcb->asoc.peer_supports_nat = 1; } else if (ptype == SCTP_PRSCTP_SUPPORTED) { /* Peer supports pr-sctp */ peer_supports_prsctp = 1; } else if (ptype == SCTP_SUPPORTED_CHUNK_EXT) { /* A supported extension chunk */ struct sctp_supported_chunk_types_param *pr_supported; uint8_t local_store[SCTP_PARAM_BUFFER_SIZE]; int num_ent, i; phdr = sctp_get_next_param(m, offset, (struct sctp_paramhdr *)&local_store, min(sizeof(local_store), plen)); if (phdr == NULL) { return (-25); } pr_supported = (struct sctp_supported_chunk_types_param *)phdr; num_ent = plen - sizeof(struct sctp_paramhdr); for (i = 0; i < num_ent; i++) { switch (pr_supported->chunk_types[i]) { case SCTP_ASCONF: peer_supports_asconf = 1; break; case SCTP_ASCONF_ACK: peer_supports_asconf_ack = 1; break; case SCTP_FORWARD_CUM_TSN: peer_supports_prsctp = 1; break; case SCTP_PACKET_DROPPED: peer_supports_pktdrop = 1; break; case SCTP_NR_SELECTIVE_ACK: peer_supports_nrsack = 1; break; case SCTP_STREAM_RESET: peer_supports_reconfig = 1; break; case SCTP_AUTHENTICATION: peer_supports_auth = 1; break; + case SCTP_IDATA: + peer_supports_idata = 1; + break; default: /* one I have not learned yet */ break; } } } else if (ptype == SCTP_RANDOM) { if (plen > sizeof(random_store)) break; if (got_random) { /* already processed a RANDOM */ goto next_param; } phdr = sctp_get_next_param(m, offset, (struct sctp_paramhdr *)random_store, min(sizeof(random_store), plen)); if (phdr == NULL) return (-26); p_random = (struct sctp_auth_random *)phdr; random_len = plen - sizeof(*p_random); /* enforce the random length */ if (random_len != SCTP_AUTH_RANDOM_SIZE_REQUIRED) { SCTPDBG(SCTP_DEBUG_AUTH1, "SCTP: invalid RANDOM len\n"); return (-27); } got_random = 1; } else if (ptype == SCTP_HMAC_LIST) { uint16_t num_hmacs; uint16_t i; if (plen > sizeof(hmacs_store)) break; if (got_hmacs) { /* already processed a HMAC list */ goto next_param; } phdr = sctp_get_next_param(m, offset, (struct sctp_paramhdr *)hmacs_store, min(plen, sizeof(hmacs_store))); if (phdr == NULL) return (-28); hmacs = (struct sctp_auth_hmac_algo *)phdr; hmacs_len = plen - sizeof(*hmacs); num_hmacs = hmacs_len / sizeof(hmacs->hmac_ids[0]); /* validate the hmac list */ if (sctp_verify_hmac_param(hmacs, num_hmacs)) { return (-29); } if (stcb->asoc.peer_hmacs != NULL) sctp_free_hmaclist(stcb->asoc.peer_hmacs); stcb->asoc.peer_hmacs = sctp_alloc_hmaclist(num_hmacs); if (stcb->asoc.peer_hmacs != NULL) { for (i = 0; i < num_hmacs; i++) { (void)sctp_auth_add_hmacid(stcb->asoc.peer_hmacs, ntohs(hmacs->hmac_ids[i])); } } got_hmacs = 1; } else if (ptype == SCTP_CHUNK_LIST) { int i; if (plen > sizeof(chunks_store)) break; if (got_chklist) { /* already processed a Chunks list */ goto next_param; } phdr = sctp_get_next_param(m, offset, (struct sctp_paramhdr *)chunks_store, min(plen, sizeof(chunks_store))); if (phdr == NULL) return (-30); chunks = (struct sctp_auth_chunk_list *)phdr; num_chunks = plen - sizeof(*chunks); if (stcb->asoc.peer_auth_chunks != NULL) sctp_clear_chunklist(stcb->asoc.peer_auth_chunks); else stcb->asoc.peer_auth_chunks = sctp_alloc_chunklist(); for (i = 0; i < num_chunks; i++) { (void)sctp_auth_add_chunk(chunks->chunk_types[i], stcb->asoc.peer_auth_chunks); /* record asconf/asconf-ack if listed */ if (chunks->chunk_types[i] == SCTP_ASCONF) saw_asconf = 1; if (chunks->chunk_types[i] == SCTP_ASCONF_ACK) saw_asconf_ack = 1; } got_chklist = 1; } else if ((ptype == SCTP_HEARTBEAT_INFO) || (ptype == SCTP_STATE_COOKIE) || (ptype == SCTP_UNRECOG_PARAM) || (ptype == SCTP_COOKIE_PRESERVE) || (ptype == SCTP_SUPPORTED_ADDRTYPE) || (ptype == SCTP_ADD_IP_ADDRESS) || (ptype == SCTP_DEL_IP_ADDRESS) || (ptype == SCTP_ERROR_CAUSE_IND) || (ptype == SCTP_SUCCESS_REPORT)) { /* don't care */ ; } else { if ((ptype & 0x8000) == 0x0000) { /* * must stop processing the rest of the * param's. Any report bits were handled * with the call to * sctp_arethere_unrecognized_parameters() * when the INIT or INIT-ACK was first seen. */ break; } } next_param: offset += SCTP_SIZE32(plen); if (offset >= limit) { break; } phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf)); } /* Now check to see if we need to purge any addresses */ TAILQ_FOREACH_SAFE(net, &stcb->asoc.nets, sctp_next, nnet) { if ((net->dest_state & SCTP_ADDR_NOT_IN_ASSOC) == SCTP_ADDR_NOT_IN_ASSOC) { /* This address has been removed from the asoc */ /* remove and free it */ stcb->asoc.numnets--; TAILQ_REMOVE(&stcb->asoc.nets, net, sctp_next); sctp_free_remote_addr(net); if (net == stcb->asoc.primary_destination) { stcb->asoc.primary_destination = NULL; sctp_select_primary_destination(stcb); } } } if ((stcb->asoc.ecn_supported == 1) && (peer_supports_ecn == 0)) { stcb->asoc.ecn_supported = 0; } if ((stcb->asoc.prsctp_supported == 1) && (peer_supports_prsctp == 0)) { stcb->asoc.prsctp_supported = 0; } if ((stcb->asoc.auth_supported == 1) && ((peer_supports_auth == 0) || (got_random == 0) || (got_hmacs == 0))) { stcb->asoc.auth_supported = 0; } if ((stcb->asoc.asconf_supported == 1) && ((peer_supports_asconf == 0) || (peer_supports_asconf_ack == 0) || (stcb->asoc.auth_supported == 0) || (saw_asconf == 0) || (saw_asconf_ack == 0))) { stcb->asoc.asconf_supported = 0; } if ((stcb->asoc.reconfig_supported == 1) && (peer_supports_reconfig == 0)) { stcb->asoc.reconfig_supported = 0; } + if ((stcb->asoc.idata_supported == 1) && + (peer_supports_idata == 0)) { + stcb->asoc.idata_supported = 0; + } if ((stcb->asoc.nrsack_supported == 1) && (peer_supports_nrsack == 0)) { stcb->asoc.nrsack_supported = 0; } if ((stcb->asoc.pktdrop_supported == 1) && (peer_supports_pktdrop == 0)) { stcb->asoc.pktdrop_supported = 0; } /* validate authentication required parameters */ if ((peer_supports_auth == 0) && (got_chklist == 1)) { /* peer does not support auth but sent a chunks list? */ return (-31); } if ((peer_supports_asconf == 1) && (peer_supports_auth == 0)) { /* peer supports asconf but not auth? */ return (-32); } else if ((peer_supports_asconf == 1) && (peer_supports_auth == 1) && ((saw_asconf == 0) || (saw_asconf_ack == 0))) { return (-33); } /* concatenate the full random key */ keylen = sizeof(*p_random) + random_len + sizeof(*hmacs) + hmacs_len; if (chunks != NULL) { keylen += sizeof(*chunks) + num_chunks; } new_key = sctp_alloc_key(keylen); if (new_key != NULL) { /* copy in the RANDOM */ if (p_random != NULL) { keylen = sizeof(*p_random) + random_len; bcopy(p_random, new_key->key, keylen); } /* append in the AUTH chunks */ if (chunks != NULL) { bcopy(chunks, new_key->key + keylen, sizeof(*chunks) + num_chunks); keylen += sizeof(*chunks) + num_chunks; } /* append in the HMACs */ if (hmacs != NULL) { bcopy(hmacs, new_key->key + keylen, sizeof(*hmacs) + hmacs_len); } } else { /* failed to get memory for the key */ return (-34); } if (stcb->asoc.authinfo.peer_random != NULL) sctp_free_key(stcb->asoc.authinfo.peer_random); stcb->asoc.authinfo.peer_random = new_key; sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.assoc_keyid); sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.recv_keyid); return (0); } int sctp_set_primary_addr(struct sctp_tcb *stcb, struct sockaddr *sa, struct sctp_nets *net) { /* make sure the requested primary address exists in the assoc */ if (net == NULL && sa) net = sctp_findnet(stcb, sa); if (net == NULL) { /* didn't find the requested primary address! */ return (-1); } else { /* set the primary address */ if (net->dest_state & SCTP_ADDR_UNCONFIRMED) { /* Must be confirmed, so queue to set */ net->dest_state |= SCTP_ADDR_REQ_PRIMARY; return (0); } stcb->asoc.primary_destination = net; if (!(net->dest_state & SCTP_ADDR_PF) && (stcb->asoc.alternate)) { sctp_free_remote_addr(stcb->asoc.alternate); stcb->asoc.alternate = NULL; } net = TAILQ_FIRST(&stcb->asoc.nets); if (net != stcb->asoc.primary_destination) { /* * first one on the list is NOT the primary * sctp_cmpaddr() is much more efficient if the * primary is the first on the list, make it so. */ TAILQ_REMOVE(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next); TAILQ_INSERT_HEAD(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next); } return (0); } } int sctp_is_vtag_good(uint32_t tag, uint16_t lport, uint16_t rport, struct timeval *now) { /* * This function serves two purposes. It will see if a TAG can be * re-used and return 1 for yes it is ok and 0 for don't use that * tag. A secondary function it will do is purge out old tags that * can be removed. */ struct sctpvtaghead *chain; struct sctp_tagblock *twait_block; struct sctpasochead *head; struct sctp_tcb *stcb; int i; SCTP_INP_INFO_RLOCK(); head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(tag, SCTP_BASE_INFO(hashasocmark))]; LIST_FOREACH(stcb, head, sctp_asocs) { /* * We choose not to lock anything here. TCB's can't be * removed since we have the read lock, so they can't be * freed on us, same thing for the INP. I may be wrong with * this assumption, but we will go with it for now :-) */ if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) { continue; } if (stcb->asoc.my_vtag == tag) { /* candidate */ if (stcb->rport != rport) { continue; } if (stcb->sctp_ep->sctp_lport != lport) { continue; } /* Its a used tag set */ SCTP_INP_INFO_RUNLOCK(); return (0); } } chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)]; /* Now what about timed wait ? */ LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) { /* * Block(s) are present, lets see if we have this tag in the * list */ for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) { if (twait_block->vtag_block[i].v_tag == 0) { /* not used */ continue; } else if ((long)twait_block->vtag_block[i].tv_sec_at_expire < now->tv_sec) { /* Audit expires this guy */ twait_block->vtag_block[i].tv_sec_at_expire = 0; twait_block->vtag_block[i].v_tag = 0; twait_block->vtag_block[i].lport = 0; twait_block->vtag_block[i].rport = 0; } else if ((twait_block->vtag_block[i].v_tag == tag) && (twait_block->vtag_block[i].lport == lport) && (twait_block->vtag_block[i].rport == rport)) { /* Bad tag, sorry :< */ SCTP_INP_INFO_RUNLOCK(); return (0); } } } SCTP_INP_INFO_RUNLOCK(); return (1); } static void sctp_drain_mbufs(struct sctp_tcb *stcb) { /* * We must hunt this association for MBUF's past the cumack (i.e. * out of order data that we can renege on). */ struct sctp_association *asoc; struct sctp_tmit_chunk *chk, *nchk; uint32_t cumulative_tsn_p1; struct sctp_queued_to_read *ctl, *nctl; int cnt, strmat; uint32_t gap, i; int fnd = 0; /* We look for anything larger than the cum-ack + 1 */ asoc = &stcb->asoc; if (asoc->cumulative_tsn == asoc->highest_tsn_inside_map) { /* none we can reneg on. */ return; } SCTP_STAT_INCR(sctps_protocol_drains_done); cumulative_tsn_p1 = asoc->cumulative_tsn + 1; cnt = 0; - /* First look in the re-assembly queue */ - TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) { - if (SCTP_TSN_GT(chk->rec.data.TSN_seq, cumulative_tsn_p1)) { - /* Yep it is above cum-ack */ - cnt++; - SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.TSN_seq, asoc->mapping_array_base_tsn); - asoc->size_on_reasm_queue = sctp_sbspace_sub(asoc->size_on_reasm_queue, chk->send_size); - sctp_ucount_decr(asoc->cnt_on_reasm_queue); - SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap); - TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next); - if (chk->data) { - sctp_m_freem(chk->data); - chk->data = NULL; - } - sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); - } - } /* Ok that was fun, now we will drain all the inbound streams? */ for (strmat = 0; strmat < asoc->streamincnt; strmat++) { - TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[strmat].inqueue, next, nctl) { + TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[strmat].inqueue, next_instrm, nctl) { if (SCTP_TSN_GT(ctl->sinfo_tsn, cumulative_tsn_p1)) { /* Yep it is above cum-ack */ cnt++; SCTP_CALC_TSN_TO_GAP(gap, ctl->sinfo_tsn, asoc->mapping_array_base_tsn); asoc->size_on_all_streams = sctp_sbspace_sub(asoc->size_on_all_streams, ctl->length); sctp_ucount_decr(asoc->cnt_on_all_streams); SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap); - TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, ctl, next); + TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, ctl, next_instrm); if (ctl->data) { sctp_m_freem(ctl->data); ctl->data = NULL; } sctp_free_remote_addr(ctl->whoFrom); - SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl); - SCTP_DECR_READQ_COUNT(); + /* Now its reasm? */ + TAILQ_FOREACH_SAFE(chk, &ctl->reasm, sctp_next, nchk) { + cnt++; + SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.TSN_seq, asoc->mapping_array_base_tsn); + asoc->size_on_reasm_queue = sctp_sbspace_sub(asoc->size_on_reasm_queue, chk->send_size); + sctp_ucount_decr(asoc->cnt_on_reasm_queue); + SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap); + TAILQ_REMOVE(&ctl->reasm, chk, sctp_next); + if (chk->data) { + sctp_m_freem(chk->data); + chk->data = NULL; + } + sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); + } + sctp_free_a_readq(stcb, ctl); + } + } + TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[strmat].uno_inqueue, next_instrm, nctl) { + if (SCTP_TSN_GT(ctl->sinfo_tsn, cumulative_tsn_p1)) { + /* Yep it is above cum-ack */ + cnt++; + SCTP_CALC_TSN_TO_GAP(gap, ctl->sinfo_tsn, asoc->mapping_array_base_tsn); + asoc->size_on_all_streams = sctp_sbspace_sub(asoc->size_on_all_streams, ctl->length); + sctp_ucount_decr(asoc->cnt_on_all_streams); + SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap); + TAILQ_REMOVE(&asoc->strmin[strmat].uno_inqueue, ctl, next_instrm); + if (ctl->data) { + sctp_m_freem(ctl->data); + ctl->data = NULL; + } + sctp_free_remote_addr(ctl->whoFrom); + /* Now its reasm? */ + TAILQ_FOREACH_SAFE(chk, &ctl->reasm, sctp_next, nchk) { + cnt++; + SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.TSN_seq, asoc->mapping_array_base_tsn); + asoc->size_on_reasm_queue = sctp_sbspace_sub(asoc->size_on_reasm_queue, chk->send_size); + sctp_ucount_decr(asoc->cnt_on_reasm_queue); + SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap); + TAILQ_REMOVE(&ctl->reasm, chk, sctp_next); + if (chk->data) { + sctp_m_freem(chk->data); + chk->data = NULL; + } + sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED); + } + sctp_free_a_readq(stcb, ctl); } } } if (cnt) { /* We must back down to see what the new highest is */ for (i = asoc->highest_tsn_inside_map; SCTP_TSN_GE(i, asoc->mapping_array_base_tsn); i--) { SCTP_CALC_TSN_TO_GAP(gap, i, asoc->mapping_array_base_tsn); if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) { asoc->highest_tsn_inside_map = i; fnd = 1; break; } } if (!fnd) { asoc->highest_tsn_inside_map = asoc->mapping_array_base_tsn - 1; } /* * Question, should we go through the delivery queue? The * only reason things are on here is the app not reading OR * a p-d-api up. An attacker COULD send enough in to * initiate the PD-API and then send a bunch of stuff to * other streams... these would wind up on the delivery * queue.. and then we would not get to them. But in order * to do this I then have to back-track and un-deliver * sequence numbers in streams.. el-yucko. I think for now * we will NOT look at the delivery queue and leave it to be * something to consider later. An alternative would be to * abort the P-D-API with a notification and then deliver * the data.... Or another method might be to keep track of * how many times the situation occurs and if we see a * possible attack underway just abort the association. */ #ifdef SCTP_DEBUG SCTPDBG(SCTP_DEBUG_PCB1, "Freed %d chunks from reneg harvest\n", cnt); #endif /* * Now do we need to find a new * asoc->highest_tsn_inside_map? */ asoc->last_revoke_count = cnt; (void)SCTP_OS_TIMER_STOP(&stcb->asoc.dack_timer.timer); /* sa_ignore NO_NULL_CHK */ sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED); sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_DRAIN, SCTP_SO_NOT_LOCKED); } /* * Another issue, in un-setting the TSN's in the mapping array we * DID NOT adjust the highest_tsn marker. This will cause one of * two things to occur. It may cause us to do extra work in checking * for our mapping array movement. More importantly it may cause us * to SACK every datagram. This may not be a bad thing though since * we will recover once we get our cum-ack above and all this stuff * we dumped recovered. */ } void sctp_drain() { /* * We must walk the PCB lists for ALL associations here. The system * is LOW on MBUF's and needs help. This is where reneging will * occur. We really hope this does NOT happen! */ VNET_ITERATOR_DECL(vnet_iter); VNET_LIST_RLOCK_NOSLEEP(); VNET_FOREACH(vnet_iter) { CURVNET_SET(vnet_iter); struct sctp_inpcb *inp; struct sctp_tcb *stcb; SCTP_STAT_INCR(sctps_protocol_drain_calls); if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) { #ifdef VIMAGE continue; #else return; #endif } SCTP_INP_INFO_RLOCK(); LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) { /* For each endpoint */ SCTP_INP_RLOCK(inp); LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { /* For each association */ SCTP_TCB_LOCK(stcb); sctp_drain_mbufs(stcb); SCTP_TCB_UNLOCK(stcb); } SCTP_INP_RUNLOCK(inp); } SCTP_INP_INFO_RUNLOCK(); CURVNET_RESTORE(); } VNET_LIST_RUNLOCK_NOSLEEP(); } /* * start a new iterator * iterates through all endpoints and associations based on the pcb_state * flags and asoc_state. "af" (mandatory) is executed for all matching * assocs and "ef" (optional) is executed when the iterator completes. * "inpf" (optional) is executed for each new endpoint as it is being * iterated through. inpe (optional) is called when the inp completes * its way through all the stcbs. */ int sctp_initiate_iterator(inp_func inpf, asoc_func af, inp_func inpe, uint32_t pcb_state, uint32_t pcb_features, uint32_t asoc_state, void *argp, uint32_t argi, end_func ef, struct sctp_inpcb *s_inp, uint8_t chunk_output_off) { struct sctp_iterator *it = NULL; if (af == NULL) { return (-1); } if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) { SCTP_PRINTF("%s: abort on initialize being %d\n", __func__, SCTP_BASE_VAR(sctp_pcb_initialized)); return (-1); } SCTP_MALLOC(it, struct sctp_iterator *, sizeof(struct sctp_iterator), SCTP_M_ITER); if (it == NULL) { SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM); return (ENOMEM); } memset(it, 0, sizeof(*it)); it->function_assoc = af; it->function_inp = inpf; if (inpf) it->done_current_ep = 0; else it->done_current_ep = 1; it->function_atend = ef; it->pointer = argp; it->val = argi; it->pcb_flags = pcb_state; it->pcb_features = pcb_features; it->asoc_state = asoc_state; it->function_inp_end = inpe; it->no_chunk_output = chunk_output_off; it->vn = curvnet; if (s_inp) { /* Assume lock is held here */ it->inp = s_inp; SCTP_INP_INCR_REF(it->inp); it->iterator_flags = SCTP_ITERATOR_DO_SINGLE_INP; } else { SCTP_INP_INFO_RLOCK(); it->inp = LIST_FIRST(&SCTP_BASE_INFO(listhead)); if (it->inp) { SCTP_INP_INCR_REF(it->inp); } SCTP_INP_INFO_RUNLOCK(); it->iterator_flags = SCTP_ITERATOR_DO_ALL_INP; } SCTP_IPI_ITERATOR_WQ_LOCK(); if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) { SCTP_IPI_ITERATOR_WQ_UNLOCK(); SCTP_PRINTF("%s: rollback on initialize being %d it=%p\n", __func__, SCTP_BASE_VAR(sctp_pcb_initialized), it); SCTP_FREE(it, SCTP_M_ITER); return (-1); } TAILQ_INSERT_TAIL(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr); if (sctp_it_ctl.iterator_running == 0) { sctp_wakeup_iterator(); } SCTP_IPI_ITERATOR_WQ_UNLOCK(); /* sa_ignore MEMLEAK {memory is put on the tailq for the iterator} */ return (0); } Index: head/sys/netinet/sctp_pcb.h =================================================================== --- head/sys/netinet/sctp_pcb.h (revision 297661) +++ head/sys/netinet/sctp_pcb.h (revision 297662) @@ -1,654 +1,657 @@ /*- * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * a) Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * b) Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the distribution. * * c) Neither the name of Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #ifndef _NETINET_SCTP_PCB_H_ #define _NETINET_SCTP_PCB_H_ #include #include #include #include LIST_HEAD(sctppcbhead, sctp_inpcb); LIST_HEAD(sctpasochead, sctp_tcb); LIST_HEAD(sctpladdr, sctp_laddr); LIST_HEAD(sctpvtaghead, sctp_tagblock); LIST_HEAD(sctp_vrflist, sctp_vrf); LIST_HEAD(sctp_ifnlist, sctp_ifn); LIST_HEAD(sctp_ifalist, sctp_ifa); TAILQ_HEAD(sctp_readhead, sctp_queued_to_read); TAILQ_HEAD(sctp_streamhead, sctp_stream_queue_pending); #include #include #define SCTP_PCBHASH_ALLADDR(port, mask) (port & mask) #define SCTP_PCBHASH_ASOC(tag, mask) (tag & mask) struct sctp_vrf { LIST_ENTRY(sctp_vrf) next_vrf; struct sctp_ifalist *vrf_addr_hash; struct sctp_ifnlist ifnlist; uint32_t vrf_id; uint32_t tbl_id_v4; /* default v4 table id */ uint32_t tbl_id_v6; /* default v6 table id */ uint32_t total_ifa_count; u_long vrf_addr_hashmark; uint32_t refcount; }; struct sctp_ifn { struct sctp_ifalist ifalist; struct sctp_vrf *vrf; LIST_ENTRY(sctp_ifn) next_ifn; LIST_ENTRY(sctp_ifn) next_bucket; void *ifn_p; /* never access without appropriate lock */ uint32_t ifn_mtu; uint32_t ifn_type; uint32_t ifn_index; /* shorthand way to look at ifn for reference */ uint32_t refcount; /* number of reference held should be >= * ifa_count */ uint32_t ifa_count; /* IFA's we hold (in our list - ifalist) */ uint32_t num_v6; /* number of v6 addresses */ uint32_t num_v4; /* number of v4 addresses */ uint32_t registered_af; /* registered address family for i/f events */ char ifn_name[SCTP_IFNAMSIZ]; }; /* SCTP local IFA flags */ #define SCTP_ADDR_VALID 0x00000001 /* its up and active */ #define SCTP_BEING_DELETED 0x00000002 /* being deleted, when * refcount = 0. Note that it * is pulled from the ifn list * and ifa_p is nulled right * away but it cannot be freed * until the last *net * pointing to it is deleted. */ #define SCTP_ADDR_DEFER_USE 0x00000004 /* Hold off using this one */ #define SCTP_ADDR_IFA_UNUSEABLE 0x00000008 struct sctp_ifa { LIST_ENTRY(sctp_ifa) next_ifa; LIST_ENTRY(sctp_ifa) next_bucket; struct sctp_ifn *ifn_p; /* back pointer to parent ifn */ void *ifa; /* pointer to ifa, needed for flag update for * that we MUST lock appropriate locks. This * is for V6. */ union sctp_sockstore address; uint32_t refcount; /* number of folks refering to this */ uint32_t flags; uint32_t localifa_flags; uint32_t vrf_id; /* vrf_id of this addr (for deleting) */ uint8_t src_is_loop; uint8_t src_is_priv; uint8_t src_is_glob; uint8_t resv; }; struct sctp_laddr { LIST_ENTRY(sctp_laddr) sctp_nxt_addr; /* next in list */ struct sctp_ifa *ifa; uint32_t action; /* Used during asconf and adding if no-zero * src-addr selection will not consider this * address. */ struct timeval start_time; /* time when this address was created */ }; struct sctp_block_entry { int error; }; struct sctp_timewait { uint32_t tv_sec_at_expire; /* the seconds from boot to expire */ uint32_t v_tag; /* the vtag that can not be reused */ uint16_t lport; /* the local port used in vtag */ uint16_t rport; /* the remote port used in vtag */ }; struct sctp_tagblock { LIST_ENTRY(sctp_tagblock) sctp_nxt_tagblock; struct sctp_timewait vtag_block[SCTP_NUMBER_IN_VTAG_BLOCK]; }; struct sctp_epinfo { #ifdef INET struct socket *udp4_tun_socket; #endif #ifdef INET6 struct socket *udp6_tun_socket; #endif struct sctpasochead *sctp_asochash; u_long hashasocmark; struct sctppcbhead *sctp_ephash; u_long hashmark; /*- * The TCP model represents a substantial overhead in that we get an * additional hash table to keep explicit connections in. The * listening TCP endpoint will exist in the usual ephash above and * accept only INIT's. It will be incapable of sending off an INIT. * When a dg arrives we must look in the normal ephash. If we find a * TCP endpoint that will tell us to go to the specific endpoint * hash and re-hash to find the right assoc/socket. If we find a UDP * model socket we then must complete the lookup. If this fails, * i.e. no association can be found then we must continue to see if * a sctp_peeloff()'d socket is in the tcpephash (a spun off socket * acts like a TCP model connected socket). */ struct sctppcbhead *sctp_tcpephash; u_long hashtcpmark; uint32_t hashtblsize; struct sctp_vrflist *sctp_vrfhash; u_long hashvrfmark; struct sctp_ifnlist *vrf_ifn_hash; u_long vrf_ifn_hashmark; struct sctppcbhead listhead; struct sctpladdr addr_wq; /* ep zone info */ sctp_zone_t ipi_zone_ep; sctp_zone_t ipi_zone_asoc; sctp_zone_t ipi_zone_laddr; sctp_zone_t ipi_zone_net; sctp_zone_t ipi_zone_chunk; sctp_zone_t ipi_zone_readq; sctp_zone_t ipi_zone_strmoq; sctp_zone_t ipi_zone_asconf; sctp_zone_t ipi_zone_asconf_ack; struct rwlock ipi_ep_mtx; struct mtx ipi_iterator_wq_mtx; struct rwlock ipi_addr_mtx; struct mtx ipi_pktlog_mtx; struct mtx wq_addr_mtx; uint32_t ipi_count_ep; /* assoc/tcb zone info */ uint32_t ipi_count_asoc; /* local addrlist zone info */ uint32_t ipi_count_laddr; /* remote addrlist zone info */ uint32_t ipi_count_raddr; /* chunk structure list for output */ uint32_t ipi_count_chunk; /* socket queue zone info */ uint32_t ipi_count_readq; /* socket queue zone info */ uint32_t ipi_count_strmoq; /* Number of vrfs */ uint32_t ipi_count_vrfs; /* Number of ifns */ uint32_t ipi_count_ifns; /* Number of ifas */ uint32_t ipi_count_ifas; /* system wide number of free chunks hanging around */ uint32_t ipi_free_chunks; uint32_t ipi_free_strmoq; struct sctpvtaghead vtag_timewait[SCTP_STACK_VTAG_HASH_SIZE]; /* address work queue handling */ struct sctp_timer addr_wq_timer; }; struct sctp_base_info { /* * All static structures that anchor the system must be here. */ struct sctp_epinfo sctppcbinfo; #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT) struct sctpstat *sctpstat; #else struct sctpstat sctpstat; #endif struct sctp_sysctl sctpsysctl; uint8_t first_time; char sctp_pcb_initialized; #if defined(SCTP_PACKET_LOGGING) int packet_log_writers; int packet_log_end; uint8_t packet_log_buffer[SCTP_PACKET_LOG_SIZE]; #endif }; /*- * Here we have all the relevant information for each SCTP entity created. We * will need to modify this as approprate. We also need to figure out how to * access /dev/random. */ struct sctp_pcb { unsigned int time_of_secret_change; /* number of seconds from * timeval.tv_sec */ uint32_t secret_key[SCTP_HOW_MANY_SECRETS][SCTP_NUMBER_OF_SECRETS]; unsigned int size_of_a_cookie; unsigned int sctp_timeoutticks[SCTP_NUM_TMRS]; unsigned int sctp_minrto; unsigned int sctp_maxrto; unsigned int initial_rto; int initial_init_rto_max; unsigned int sctp_sack_freq; uint32_t sctp_sws_sender; uint32_t sctp_sws_receiver; uint32_t sctp_default_cc_module; uint32_t sctp_default_ss_module; /* authentication related fields */ struct sctp_keyhead shared_keys; sctp_auth_chklist_t *local_auth_chunks; sctp_hmaclist_t *local_hmacs; uint16_t default_keyid; /* various thresholds */ /* Max times I will init at a guy */ uint16_t max_init_times; /* Max times I will send before we consider someone dead */ uint16_t max_send_times; uint16_t def_net_failure; uint16_t def_net_pf_threshold; /* number of streams to pre-open on a association */ uint16_t pre_open_stream_count; uint16_t max_open_streams_intome; /* random number generator */ uint32_t random_counter; uint8_t random_numbers[SCTP_SIGNATURE_ALOC_SIZE]; uint8_t random_store[SCTP_SIGNATURE_ALOC_SIZE]; /* * This timer is kept running per endpoint. When it fires it will * change the secret key. The default is once a hour */ struct sctp_timer signature_change; /* Zero copy full buffer timer */ struct sctp_timer zero_copy_timer; /* Zero copy app to transport (sendq) read repulse timer */ struct sctp_timer zero_copy_sendq_timer; uint32_t def_cookie_life; /* defaults to 0 */ int auto_close_time; uint32_t initial_sequence_debug; uint32_t adaptation_layer_indicator; uint8_t adaptation_layer_indicator_provided; uint32_t store_at; uint32_t max_burst; uint32_t fr_max_burst; #ifdef INET6 uint32_t default_flowlabel; #endif uint8_t default_dscp; char current_secret_number; char last_secret_number; uint16_t port; /* remote UDP encapsulation port */ }; #ifndef SCTP_ALIGNMENT #define SCTP_ALIGNMENT 32 #endif #ifndef SCTP_ALIGNM1 #define SCTP_ALIGNM1 (SCTP_ALIGNMENT-1) #endif #define sctp_lport ip_inp.inp.inp_lport struct sctp_pcbtsn_rlog { uint32_t vtag; uint16_t strm; uint16_t seq; uint16_t sz; uint16_t flgs; }; #define SCTP_READ_LOG_SIZE 135 /* we choose the number to make a pcb a page */ struct sctp_inpcb { /*- * put an inpcb in front of it all, kind of a waste but we need to * for compatability with all the other stuff. */ union { struct inpcb inp; char align[(sizeof(struct in6pcb) + SCTP_ALIGNM1) & ~SCTP_ALIGNM1]; } ip_inp; /* Socket buffer lock protects read_queue and of course sb_cc */ struct sctp_readhead read_queue; LIST_ENTRY(sctp_inpcb) sctp_list; /* lists all endpoints */ /* hash of all endpoints for model */ LIST_ENTRY(sctp_inpcb) sctp_hash; /* count of local addresses bound, 0 if bound all */ int laddr_count; /* list of addrs in use by the EP, NULL if bound-all */ struct sctpladdr sctp_addr_list; /* * used for source address selection rotation when we are subset * bound */ struct sctp_laddr *next_addr_touse; /* back pointer to our socket */ struct socket *sctp_socket; uint64_t sctp_features; /* Feature flags */ uint32_t sctp_flags; /* INP state flag set */ uint32_t sctp_mobility_features; /* Mobility Feature flags */ struct sctp_pcb sctp_ep;/* SCTP ep data */ /* head of the hash of all associations */ struct sctpasochead *sctp_tcbhash; u_long sctp_hashmark; /* head of the list of all associations */ struct sctpasochead sctp_asoc_list; #ifdef SCTP_TRACK_FREED_ASOCS struct sctpasochead sctp_asoc_free_list; #endif struct sctp_iterator *inp_starting_point_for_iterator; uint32_t sctp_frag_point; uint32_t partial_delivery_point; uint32_t sctp_context; uint32_t max_cwnd; uint8_t local_strreset_support; uint32_t sctp_cmt_on_off; uint8_t ecn_supported; uint8_t prsctp_supported; uint8_t auth_supported; + uint8_t idata_supported; uint8_t asconf_supported; uint8_t reconfig_supported; uint8_t nrsack_supported; uint8_t pktdrop_supported; struct sctp_nonpad_sndrcvinfo def_send; /*- * These three are here for the sosend_dgram * (pkt, pkt_last and control). * routine. However, I don't think anyone in * the current FreeBSD kernel calls this. So * they are candidates with sctp_sendm for * de-supporting. */ struct mbuf *pkt, *pkt_last; struct mbuf *control; struct mtx inp_mtx; struct mtx inp_create_mtx; struct mtx inp_rdata_mtx; int32_t refcount; uint32_t def_vrf_id; uint16_t fibnum; uint32_t total_sends; uint32_t total_recvs; uint32_t last_abort_code; uint32_t total_nospaces; struct sctpasochead *sctp_asocidhash; u_long hashasocidmark; uint32_t sctp_associd_counter; #ifdef SCTP_ASOCLOG_OF_TSNS struct sctp_pcbtsn_rlog readlog[SCTP_READ_LOG_SIZE]; uint32_t readlog_index; #endif }; struct sctp_tcb { struct socket *sctp_socket; /* back pointer to socket */ struct sctp_inpcb *sctp_ep; /* back pointer to ep */ LIST_ENTRY(sctp_tcb) sctp_tcbhash; /* next link in hash * table */ LIST_ENTRY(sctp_tcb) sctp_tcblist; /* list of all of the * TCB's */ LIST_ENTRY(sctp_tcb) sctp_tcbasocidhash; /* next link in asocid * hash table */ LIST_ENTRY(sctp_tcb) sctp_asocs; /* vtag hash list */ struct sctp_block_entry *block_entry; /* pointer locked by socket * send buffer */ struct sctp_association asoc; /*- * freed_by_sorcv_sincelast is protected by the sockbuf_lock NOT the * tcb_lock. Its special in this way to help avoid extra mutex calls * in the reading of data. */ uint32_t freed_by_sorcv_sincelast; uint32_t total_sends; uint32_t total_recvs; int freed_from_where; uint16_t rport; /* remote port in network format */ uint16_t resv; struct mtx tcb_mtx; struct mtx tcb_send_mtx; }; #include /* TODO where to put non-_KERNEL things for __Userspace__? */ #if defined(_KERNEL) || defined(__Userspace__) /* Attention Julian, this is the extern that * goes with the base info. sctp_pcb.c has * the real definition. */ VNET_DECLARE(struct sctp_base_info, system_base_info); #ifdef INET6 int SCTP6_ARE_ADDR_EQUAL(struct sockaddr_in6 *a, struct sockaddr_in6 *b); #endif void sctp_fill_pcbinfo(struct sctp_pcbinfo *); struct sctp_ifn * sctp_find_ifn(void *ifn, uint32_t ifn_index); struct sctp_vrf *sctp_allocate_vrf(int vrfid); struct sctp_vrf *sctp_find_vrf(uint32_t vrfid); void sctp_free_vrf(struct sctp_vrf *vrf); /*- * Change address state, can be used if * O/S supports telling transports about * changes to IFA/IFN's (link layer triggers). * If a ifn goes down, we will do src-addr-selection * and NOT use that, as a source address. This does * not stop the routing system from routing out * that interface, but we won't put it as a source. */ void sctp_mark_ifa_addr_down(uint32_t vrf_id, struct sockaddr *addr, const char *if_name, uint32_t ifn_index); void sctp_mark_ifa_addr_up(uint32_t vrf_id, struct sockaddr *addr, const char *if_name, uint32_t ifn_index); struct sctp_ifa * sctp_add_addr_to_vrf(uint32_t vrfid, void *ifn, uint32_t ifn_index, uint32_t ifn_type, const char *if_name, void *ifa, struct sockaddr *addr, uint32_t ifa_flags, int dynamic_add); void sctp_update_ifn_mtu(uint32_t ifn_index, uint32_t mtu); void sctp_free_ifn(struct sctp_ifn *sctp_ifnp); void sctp_free_ifa(struct sctp_ifa *sctp_ifap); void sctp_del_addr_from_vrf(uint32_t vrfid, struct sockaddr *addr, uint32_t ifn_index, const char *if_name); struct sctp_nets *sctp_findnet(struct sctp_tcb *, struct sockaddr *); struct sctp_inpcb *sctp_pcb_findep(struct sockaddr *, int, int, uint32_t); int sctp_inpcb_bind(struct socket *, struct sockaddr *, struct sctp_ifa *, struct thread *); struct sctp_tcb * sctp_findassociation_addr(struct mbuf *, int, struct sockaddr *, struct sockaddr *, struct sctphdr *, struct sctp_chunkhdr *, struct sctp_inpcb **, struct sctp_nets **, uint32_t vrf_id); struct sctp_tcb * sctp_findassociation_addr_sa(struct sockaddr *, struct sockaddr *, struct sctp_inpcb **, struct sctp_nets **, int, uint32_t); void sctp_move_pcb_and_assoc(struct sctp_inpcb *, struct sctp_inpcb *, struct sctp_tcb *); /*- * For this call ep_addr, the to is the destination endpoint address of the * peer (relative to outbound). The from field is only used if the TCP model * is enabled and helps distingush amongst the subset bound (non-boundall). * The TCP model MAY change the actual ep field, this is why it is passed. */ struct sctp_tcb * sctp_findassociation_ep_addr(struct sctp_inpcb **, struct sockaddr *, struct sctp_nets **, struct sockaddr *, struct sctp_tcb *); struct sctp_tcb * sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock); struct sctp_tcb * sctp_findassociation_ep_asocid(struct sctp_inpcb *, sctp_assoc_t, int); struct sctp_tcb * sctp_findassociation_ep_asconf(struct mbuf *, int, struct sockaddr *, struct sctphdr *, struct sctp_inpcb **, struct sctp_nets **, uint32_t vrf_id); int sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id); int sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id); void sctp_inpcb_free(struct sctp_inpcb *, int, int); struct sctp_tcb * sctp_aloc_assoc(struct sctp_inpcb *, struct sockaddr *, int *, uint32_t, uint32_t, uint16_t, struct thread *); int sctp_free_assoc(struct sctp_inpcb *, struct sctp_tcb *, int, int); void sctp_delete_from_timewait(uint32_t, uint16_t, uint16_t); int sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport); void sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport); void sctp_add_local_addr_ep(struct sctp_inpcb *, struct sctp_ifa *, uint32_t); void sctp_del_local_addr_ep(struct sctp_inpcb *, struct sctp_ifa *); int sctp_add_remote_addr(struct sctp_tcb *, struct sockaddr *, struct sctp_nets **, int, int); void sctp_remove_net(struct sctp_tcb *, struct sctp_nets *); int sctp_del_remote_addr(struct sctp_tcb *, struct sockaddr *); void sctp_pcb_init(void); void sctp_pcb_finish(void); void sctp_add_local_addr_restricted(struct sctp_tcb *, struct sctp_ifa *); void sctp_del_local_addr_restricted(struct sctp_tcb *, struct sctp_ifa *); int sctp_load_addresses_from_init(struct sctp_tcb *, struct mbuf *, int, int, struct sockaddr *, struct sockaddr *, struct sockaddr *); int sctp_set_primary_addr(struct sctp_tcb *, struct sockaddr *, struct sctp_nets *); int sctp_is_vtag_good(uint32_t, uint16_t lport, uint16_t rport, struct timeval *); /* void sctp_drain(void); */ int sctp_destination_is_reachable(struct sctp_tcb *, struct sockaddr *); int sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp); + +void sctp_clean_up_stream(struct sctp_tcb *stcb, struct sctp_readhead *rh); /*- * Null in last arg inpcb indicate run on ALL ep's. Specific inp in last arg * indicates run on ONLY assoc's of the specified endpoint. */ int sctp_initiate_iterator(inp_func inpf, asoc_func af, inp_func inpe, uint32_t, uint32_t, uint32_t, void *, uint32_t, end_func ef, struct sctp_inpcb *, uint8_t co_off); #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP) void sctp_queue_to_mcore(struct mbuf *m, int off, int cpu_to_use); #endif #endif /* _KERNEL */ #endif /* !__sctp_pcb_h__ */ Index: head/sys/netinet/sctp_structs.h =================================================================== --- head/sys/netinet/sctp_structs.h (revision 297661) +++ head/sys/netinet/sctp_structs.h (revision 297662) @@ -1,1237 +1,1253 @@ /*- * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved. * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * a) Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * b) Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the distribution. * * c) Neither the name of Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #ifndef _NETINET_SCTP_STRUCTS_H_ #define _NETINET_SCTP_STRUCTS_H_ #include #include #include struct sctp_timer { sctp_os_timer_t timer; int type; /* * Depending on the timer type these will be setup and cast with the * appropriate entity. */ void *ep; void *tcb; void *net; void *vnet; /* for sanity checking */ void *self; uint32_t ticks; uint32_t stopped_from; }; struct sctp_foo_stuff { struct sctp_inpcb *inp; uint32_t lineno; uint32_t ticks; int updown; }; /* * This is the information we track on each interface that we know about from * the distant end. */ TAILQ_HEAD(sctpnetlisthead, sctp_nets); struct sctp_stream_reset_list { TAILQ_ENTRY(sctp_stream_reset_list) next_resp; uint32_t seq; uint32_t tsn; uint32_t number_entries; uint16_t list_of_streams[]; }; TAILQ_HEAD(sctp_resethead, sctp_stream_reset_list); /* * Users of the iterator need to malloc a iterator with a call to * sctp_initiate_iterator(inp_func, assoc_func, inp_func, pcb_flags, pcb_features, * asoc_state, void-ptr-arg, uint32-arg, end_func, inp); * * Use the following two defines if you don't care what pcb flags are on the EP * and/or you don't care what state the association is in. * * Note that if you specify an INP as the last argument then ONLY each * association of that single INP will be executed upon. Note that the pcb * flags STILL apply so if the inp you specify has different pcb_flags then * what you put in pcb_flags nothing will happen. use SCTP_PCB_ANY_FLAGS to * assure the inp you specify gets treated. */ #define SCTP_PCB_ANY_FLAGS 0x00000000 #define SCTP_PCB_ANY_FEATURES 0x00000000 #define SCTP_ASOC_ANY_STATE 0x00000000 typedef void (*asoc_func) (struct sctp_inpcb *, struct sctp_tcb *, void *ptr, uint32_t val); typedef int (*inp_func) (struct sctp_inpcb *, void *ptr, uint32_t val); typedef void (*end_func) (void *ptr, uint32_t val); #if defined(__FreeBSD__) && defined(SCTP_MCORE_INPUT) && defined(SMP) /* whats on the mcore control struct */ struct sctp_mcore_queue { TAILQ_ENTRY(sctp_mcore_queue) next; struct vnet *vn; struct mbuf *m; int off; int v6; }; TAILQ_HEAD(sctp_mcore_qhead, sctp_mcore_queue); struct sctp_mcore_ctrl { SCTP_PROCESS_STRUCT thread_proc; struct sctp_mcore_qhead que; struct mtx core_mtx; struct mtx que_mtx; int running; int cpuid; }; #endif struct sctp_iterator { TAILQ_ENTRY(sctp_iterator) sctp_nxt_itr; struct vnet *vn; struct sctp_timer tmr; struct sctp_inpcb *inp; /* current endpoint */ struct sctp_tcb *stcb; /* current* assoc */ struct sctp_inpcb *next_inp; /* special hook to skip to */ asoc_func function_assoc; /* per assoc function */ inp_func function_inp; /* per endpoint function */ inp_func function_inp_end; /* end INP function */ end_func function_atend;/* iterator completion function */ void *pointer; /* pointer for apply func to use */ uint32_t val; /* value for apply func to use */ uint32_t pcb_flags; /* endpoint flags being checked */ uint32_t pcb_features; /* endpoint features being checked */ uint32_t asoc_state; /* assoc state being checked */ uint32_t iterator_flags; uint8_t no_chunk_output; uint8_t done_current_ep; }; /* iterator_flags values */ #define SCTP_ITERATOR_DO_ALL_INP 0x00000001 #define SCTP_ITERATOR_DO_SINGLE_INP 0x00000002 TAILQ_HEAD(sctpiterators, sctp_iterator); struct sctp_copy_all { struct sctp_inpcb *inp; /* ep */ struct mbuf *m; struct sctp_sndrcvinfo sndrcv; int sndlen; int cnt_sent; int cnt_failed; }; struct sctp_asconf_iterator { struct sctpladdr list_of_work; int cnt; }; struct iterator_control { struct mtx ipi_iterator_wq_mtx; struct mtx it_mtx; SCTP_PROCESS_STRUCT thread_proc; struct sctpiterators iteratorhead; struct sctp_iterator *cur_it; uint32_t iterator_running; uint32_t iterator_flags; }; #define SCTP_ITERATOR_STOP_CUR_IT 0x00000004 #define SCTP_ITERATOR_STOP_CUR_INP 0x00000008 struct sctp_net_route { sctp_rtentry_t *ro_rt; char *ro_prepend; uint16_t ro_plen; uint16_t ro_flags; uint16_t ro_mtu; uint16_t spare; union sctp_sockstore _l_addr; /* remote peer addr */ struct sctp_ifa *_s_addr; /* our selected src addr */ }; struct htcp { uint16_t alpha; /* Fixed point arith, << 7 */ uint8_t beta; /* Fixed point arith, << 7 */ uint8_t modeswitch; /* Delay modeswitch until we had at least one * congestion event */ uint32_t last_cong; /* Time since last congestion event end */ uint32_t undo_last_cong; uint16_t bytes_acked; uint32_t bytecount; uint32_t minRTT; uint32_t maxRTT; uint32_t undo_maxRTT; uint32_t undo_old_maxB; /* Bandwidth estimation */ uint32_t minB; uint32_t maxB; uint32_t old_maxB; uint32_t Bi; uint32_t lasttime; }; struct rtcc_cc { struct timeval tls; /* The time we started the sending */ uint64_t lbw; /* Our last estimated bw */ uint64_t lbw_rtt; /* RTT at bw estimate */ uint64_t bw_bytes; /* The total bytes since this sending began */ uint64_t bw_tot_time; /* The total time since sending began */ uint64_t new_tot_time; /* temp holding the new value */ uint64_t bw_bytes_at_last_rttc; /* What bw_bytes was at last rtt calc */ uint32_t cwnd_at_bw_set;/* Cwnd at last bw saved - lbw */ uint32_t vol_reduce; /* cnt of voluntary reductions */ uint16_t steady_step; /* The number required to be in steady state */ uint16_t step_cnt; /* The current number */ uint8_t ret_from_eq; /* When all things are equal what do I return * 0/1 - 1 no cc advance */ uint8_t use_dccc_ecn; /* Flag to enable DCCC ECN */ uint8_t tls_needs_set; /* Flag to indicate we need to set tls 0 or 1 * means set at send 2 not */ uint8_t last_step_state;/* Last state if steady state stepdown is on */ uint8_t rtt_set_this_sack; /* Flag saying this sack had RTT calc * on it */ uint8_t last_inst_ind; /* Last saved inst indication */ }; struct sctp_nets { TAILQ_ENTRY(sctp_nets) sctp_next; /* next link */ /* * Things on the top half may be able to be split into a common * structure shared by all. */ struct sctp_timer pmtu_timer; struct sctp_timer hb_timer; /* * The following two in combination equate to a route entry for v6 * or v4. */ struct sctp_net_route ro; /* mtu discovered so far */ uint32_t mtu; uint32_t ssthresh; /* not sure about this one for split */ uint32_t last_cwr_tsn; uint32_t cwr_window_tsn; uint32_t ecn_ce_pkt_cnt; uint32_t lost_cnt; /* smoothed average things for RTT and RTO itself */ int lastsa; int lastsv; uint64_t rtt; /* last measured rtt value in us */ unsigned int RTO; /* This is used for SHUTDOWN/SHUTDOWN-ACK/SEND or INIT timers */ struct sctp_timer rxt_timer; /* last time in seconds I sent to it */ struct timeval last_sent_time; union cc_control_data { struct htcp htcp_ca; /* JRS - struct used in HTCP algorithm */ struct rtcc_cc rtcc; /* rtcc module cc stuff */ } cc_mod; int ref_count; /* Congestion stats per destination */ /* * flight size variables and such, sorry Vern, I could not avoid * this if I wanted performance :> */ uint32_t flight_size; uint32_t cwnd; /* actual cwnd */ uint32_t prev_cwnd; /* cwnd before any processing */ uint32_t ecn_prev_cwnd; /* ECN prev cwnd at first ecn_echo seen in new * window */ uint32_t partial_bytes_acked; /* in CA tracks when to incr a MTU */ /* tracking variables to avoid the aloc/free in sack processing */ unsigned int net_ack; unsigned int net_ack2; /* * JRS - 5/8/07 - Variable to track last time a destination was * active for CMT PF */ uint32_t last_active; /* * CMT variables (iyengar@cis.udel.edu) */ uint32_t this_sack_highest_newack; /* tracks highest TSN newly * acked for a given dest in * the current SACK. Used in * SFR and HTNA algos */ uint32_t pseudo_cumack; /* CMT CUC algorithm. Maintains next expected * pseudo-cumack for this destination */ uint32_t rtx_pseudo_cumack; /* CMT CUC algorithm. Maintains next * expected pseudo-cumack for this * destination */ /* CMT fast recovery variables */ uint32_t fast_recovery_tsn; uint32_t heartbeat_random1; uint32_t heartbeat_random2; #ifdef INET6 uint32_t flowlabel; #endif uint8_t dscp; struct timeval start_time; /* time when this net was created */ uint32_t marked_retrans;/* number or DATA chunks marked for timer * based retransmissions */ uint32_t marked_fastretrans; uint32_t heart_beat_delay; /* Heart Beat delay in ms */ /* if this guy is ok or not ... status */ uint16_t dest_state; /* number of timeouts to consider the destination unreachable */ uint16_t failure_threshold; /* number of timeouts to consider the destination potentially failed */ uint16_t pf_threshold; /* error stats on the destination */ uint16_t error_count; /* UDP port number in case of UDP tunneling */ uint16_t port; uint8_t fast_retran_loss_recovery; uint8_t will_exit_fast_recovery; /* Flags that probably can be combined into dest_state */ uint8_t fast_retran_ip; /* fast retransmit in progress */ uint8_t hb_responded; uint8_t saw_newack; /* CMT's SFR algorithm flag */ uint8_t src_addr_selected; /* if we split we move */ uint8_t indx_of_eligible_next_to_use; uint8_t addr_is_local; /* its a local address (if known) could move * in split */ /* * CMT variables (iyengar@cis.udel.edu) */ uint8_t find_pseudo_cumack; /* CMT CUC algorithm. Flag used to * find a new pseudocumack. This flag * is set after a new pseudo-cumack * has been received and indicates * that the sender should find the * next pseudo-cumack expected for * this destination */ uint8_t find_rtx_pseudo_cumack; /* CMT CUCv2 algorithm. Flag used to * find a new rtx-pseudocumack. This * flag is set after a new * rtx-pseudo-cumack has been received * and indicates that the sender * should find the next * rtx-pseudo-cumack expected for this * destination */ uint8_t new_pseudo_cumack; /* CMT CUC algorithm. Flag used to * indicate if a new pseudo-cumack or * rtx-pseudo-cumack has been received */ uint8_t window_probe; /* Doing a window probe? */ uint8_t RTO_measured; /* Have we done the first measure */ uint8_t last_hs_used; /* index into the last HS table entry we used */ uint8_t lan_type; uint8_t rto_needed; uint32_t flowid; uint8_t flowtype; }; struct sctp_data_chunkrec { uint32_t TSN_seq; /* the TSN of this transmit */ - uint16_t stream_seq; /* the stream sequence number of this transmit */ + uint32_t stream_seq; /* the stream sequence number of this transmit */ uint16_t stream_number; /* the stream number of this guy */ uint32_t payloadtype; uint32_t context; /* from send */ uint32_t cwnd_at_send; /* * part of the Highest sacked algorithm to be able to stroke counts * on ones that are FR'd. */ uint32_t fast_retran_tsn; /* sending_seq at the time of FR */ struct timeval timetodrop; /* time we drop it from queue */ + uint32_t fsn_num; /* Fragment Sequence Number */ uint8_t doing_fast_retransmit; uint8_t rcv_flags; /* flags pulled from data chunk on inbound for * outbound holds sending flags for PR-SCTP. */ uint8_t state_flags; uint8_t chunk_was_revoked; uint8_t fwd_tsn_cnt; }; TAILQ_HEAD(sctpchunk_listhead, sctp_tmit_chunk); /* The lower byte is used to enumerate PR_SCTP policies */ #define CHUNK_FLAGS_PR_SCTP_TTL SCTP_PR_SCTP_TTL #define CHUNK_FLAGS_PR_SCTP_BUF SCTP_PR_SCTP_BUF #define CHUNK_FLAGS_PR_SCTP_RTX SCTP_PR_SCTP_RTX /* The upper byte is used as a bit mask */ #define CHUNK_FLAGS_FRAGMENT_OK 0x0100 struct chk_id { uint8_t id; uint8_t can_take_data; }; struct sctp_tmit_chunk { union { struct sctp_data_chunkrec data; struct chk_id chunk_id; } rec; struct sctp_association *asoc; /* bp to asoc this belongs to */ struct timeval sent_rcv_time; /* filled in if RTT being calculated */ struct mbuf *data; /* pointer to mbuf chain of data */ struct mbuf *last_mbuf; /* pointer to last mbuf in chain */ struct sctp_nets *whoTo; TAILQ_ENTRY(sctp_tmit_chunk) sctp_next; /* next link */ int32_t sent; /* the send status */ uint16_t snd_count; /* number of times I sent */ uint16_t flags; /* flags, such as FRAGMENT_OK */ uint16_t send_size; uint16_t book_size; uint16_t mbcnt; uint16_t auth_keyid; uint8_t holds_key_ref; /* flag if auth keyid refcount is held */ uint8_t pad_inplace; uint8_t do_rtt; uint8_t book_size_scale; uint8_t no_fr_allowed; uint8_t copy_by_ref; uint8_t window_probe; }; /* * The first part of this structure MUST be the entire sinfo structure. Maybe * I should have made it a sub structure... we can circle back later and do * that if we want. */ struct sctp_queued_to_read { /* sinfo structure Pluse more */ uint16_t sinfo_stream; /* off the wire */ - uint16_t sinfo_ssn; /* off the wire */ + uint32_t sinfo_ssn; /* off the wire */ uint16_t sinfo_flags; /* SCTP_UNORDERED from wire use SCTP_EOF for * EOR */ uint32_t sinfo_ppid; /* off the wire */ uint32_t sinfo_context; /* pick this up from assoc def context? */ uint32_t sinfo_timetolive; /* not used by kernel */ uint32_t sinfo_tsn; /* Use this in reassembly as first TSN */ uint32_t sinfo_cumtsn; /* Use this in reassembly as last TSN */ sctp_assoc_t sinfo_assoc_id; /* our assoc id */ /* Non sinfo stuff */ + uint32_t msg_id; /* Fragment Index */ uint32_t length; /* length of data */ uint32_t held_length; /* length held in sb */ + uint32_t top_fsn; /* Highest FSN in queue */ + uint32_t fsn_included; /* Highest FSN in *data portion */ struct sctp_nets *whoFrom; /* where it came from */ struct mbuf *data; /* front of the mbuf chain of data with * PKT_HDR */ struct mbuf *tail_mbuf; /* used for multi-part data */ struct mbuf *aux_data; /* used to hold/cache control if o/s does not * take it from us */ struct sctp_tcb *stcb; /* assoc, used for window update */ TAILQ_ENTRY(sctp_queued_to_read) next; + TAILQ_ENTRY(sctp_queued_to_read) next_instrm; + struct sctpchunk_listhead reasm; uint16_t port_from; uint16_t spec_flags; /* Flags to hold the notification field */ uint8_t do_not_ref_stcb; uint8_t end_added; uint8_t pdapi_aborted; + uint8_t pdapi_started; uint8_t some_taken; + uint8_t last_frag_seen; + uint8_t first_frag_seen; + uint8_t on_read_q; + uint8_t on_strm_q; }; +#define SCTP_ON_ORDERED 1 +#define SCTP_ON_UNORDERED 2 + /* This data structure will be on the outbound * stream queues. Data will be pulled off from * the front of the mbuf data and chunk-ified * by the output routines. We will custom * fit every chunk we pull to the send/sent * queue to make up the next full packet * if we can. An entry cannot be removed * from the stream_out queue until * the msg_is_complete flag is set. This * means at times data/tail_mbuf MIGHT * be NULL.. If that occurs it happens * for one of two reasons. Either the user * is blocked on a send() call and has not * awoken to copy more data down... OR * the user is in the explict MSG_EOR mode * and wrote some data, but has not completed * sending. */ struct sctp_stream_queue_pending { struct mbuf *data; struct mbuf *tail_mbuf; struct timeval ts; struct sctp_nets *net; TAILQ_ENTRY(sctp_stream_queue_pending) next; TAILQ_ENTRY(sctp_stream_queue_pending) ss_next; + uint32_t fsn; + uint32_t msg_id; uint32_t length; uint32_t timetolive; uint32_t ppid; uint32_t context; uint16_t sinfo_flags; uint16_t stream; uint16_t act_flags; uint16_t auth_keyid; uint8_t holds_key_ref; uint8_t msg_is_complete; uint8_t some_taken; uint8_t sender_all_done; uint8_t put_last_out; uint8_t discard_rest; }; /* * this struct contains info that is used to track inbound stream data and * help with ordering. */ TAILQ_HEAD(sctpwheelunrel_listhead, sctp_stream_in); struct sctp_stream_in { struct sctp_readhead inqueue; + struct sctp_readhead uno_inqueue; + uint32_t last_sequence_delivered; /* used for re-order */ uint16_t stream_no; - uint16_t last_sequence_delivered; /* used for re-order */ uint8_t delivery_started; + uint8_t pd_api_started; }; TAILQ_HEAD(sctpwheel_listhead, sctp_stream_out); TAILQ_HEAD(sctplist_listhead, sctp_stream_queue_pending); /* Round-robin schedulers */ struct ss_rr { /* next link in wheel */ TAILQ_ENTRY(sctp_stream_out) next_spoke; }; /* Priority scheduler */ struct ss_prio { /* next link in wheel */ TAILQ_ENTRY(sctp_stream_out) next_spoke; /* priority id */ uint16_t priority; }; /* Fair Bandwidth scheduler */ struct ss_fb { /* next link in wheel */ TAILQ_ENTRY(sctp_stream_out) next_spoke; /* stores message size */ int32_t rounds; }; /* * This union holds all data necessary for * different stream schedulers. */ union scheduling_data { struct sctpwheel_listhead out_wheel; struct sctplist_listhead out_list; }; /* * This union holds all parameters per stream * necessary for different stream schedulers. */ union scheduling_parameters { struct ss_rr rr; struct ss_prio prio; struct ss_fb fb; }; /* States for outgoing streams */ #define SCTP_STREAM_CLOSED 0x00 #define SCTP_STREAM_OPENING 0x01 #define SCTP_STREAM_OPEN 0x02 #define SCTP_STREAM_RESET_PENDING 0x03 #define SCTP_STREAM_RESET_IN_FLIGHT 0x04 #define SCTP_MAX_STREAMS_AT_ONCE_RESET 200 /* This struct is used to track the traffic on outbound streams */ struct sctp_stream_out { struct sctp_streamhead outqueue; union scheduling_parameters ss_params; uint32_t chunks_on_queues; /* send queue and sent queue */ #if defined(SCTP_DETAILED_STR_STATS) uint32_t abandoned_unsent[SCTP_PR_SCTP_MAX + 1]; uint32_t abandoned_sent[SCTP_PR_SCTP_MAX + 1]; #else /* Only the aggregation */ uint32_t abandoned_unsent[1]; uint32_t abandoned_sent[1]; #endif + uint32_t next_sequence_send; /* next one I expect to send out */ uint16_t stream_no; - uint16_t next_sequence_send; /* next one I expect to send out */ uint8_t last_msg_incomplete; uint8_t state; }; /* used to keep track of the addresses yet to try to add/delete */ TAILQ_HEAD(sctp_asconf_addrhead, sctp_asconf_addr); struct sctp_asconf_addr { TAILQ_ENTRY(sctp_asconf_addr) next; struct sctp_asconf_addr_param ap; struct sctp_ifa *ifa; /* save the ifa for add/del ip */ uint8_t sent; /* has this been sent yet? */ uint8_t special_del; /* not to be used in lookup */ }; struct sctp_scoping { uint8_t ipv4_addr_legal; uint8_t ipv6_addr_legal; uint8_t loopback_scope; uint8_t ipv4_local_scope; uint8_t local_scope; uint8_t site_scope; }; #define SCTP_TSN_LOG_SIZE 40 struct sctp_tsn_log { void *stcb; uint32_t tsn; + uint32_t seq; uint16_t strm; - uint16_t seq; uint16_t sz; uint16_t flgs; uint16_t in_pos; uint16_t in_out; + uint16_t resv; }; #define SCTP_FS_SPEC_LOG_SIZE 200 struct sctp_fs_spec_log { uint32_t sent; uint32_t total_flight; uint32_t tsn; uint16_t book; uint8_t incr; uint8_t decr; }; /* This struct is here to cut out the compatiabilty * pad that bulks up both the inp and stcb. The non * pad portion MUST stay in complete sync with * sctp_sndrcvinfo... i.e. if sinfo_xxxx is added * this must be done here too. */ struct sctp_nonpad_sndrcvinfo { uint16_t sinfo_stream; uint16_t sinfo_ssn; uint16_t sinfo_flags; uint32_t sinfo_ppid; uint32_t sinfo_context; uint32_t sinfo_timetolive; uint32_t sinfo_tsn; uint32_t sinfo_cumtsn; sctp_assoc_t sinfo_assoc_id; uint16_t sinfo_keynumber; uint16_t sinfo_keynumber_valid; }; /* * JRS - Structure to hold function pointers to the functions responsible * for congestion control. */ struct sctp_cc_functions { void (*sctp_set_initial_cc_param) (struct sctp_tcb *stcb, struct sctp_nets *net); void (*sctp_cwnd_update_after_sack) (struct sctp_tcb *stcb, struct sctp_association *asoc, int accum_moved, int reneged_all, int will_exit); void (*sctp_cwnd_update_exit_pf) (struct sctp_tcb *stcb, struct sctp_nets *net); void (*sctp_cwnd_update_after_fr) (struct sctp_tcb *stcb, struct sctp_association *asoc); void (*sctp_cwnd_update_after_timeout) (struct sctp_tcb *stcb, struct sctp_nets *net); void (*sctp_cwnd_update_after_ecn_echo) (struct sctp_tcb *stcb, struct sctp_nets *net, int in_window, int num_pkt_lost); void (*sctp_cwnd_update_after_packet_dropped) (struct sctp_tcb *stcb, struct sctp_nets *net, struct sctp_pktdrop_chunk *cp, uint32_t * bottle_bw, uint32_t * on_queue); void (*sctp_cwnd_update_after_output) (struct sctp_tcb *stcb, struct sctp_nets *net, int burst_limit); void (*sctp_cwnd_update_packet_transmitted) (struct sctp_tcb *stcb, struct sctp_nets *net); void (*sctp_cwnd_update_tsn_acknowledged) (struct sctp_nets *net, struct sctp_tmit_chunk *); void (*sctp_cwnd_new_transmission_begins) (struct sctp_tcb *stcb, struct sctp_nets *net); void (*sctp_cwnd_prepare_net_for_sack) (struct sctp_tcb *stcb, struct sctp_nets *net); int (*sctp_cwnd_socket_option) (struct sctp_tcb *stcb, int set, struct sctp_cc_option *); void (*sctp_rtt_calculated) (struct sctp_tcb *, struct sctp_nets *, struct timeval *); }; /* * RS - Structure to hold function pointers to the functions responsible * for stream scheduling. */ struct sctp_ss_functions { void (*sctp_ss_init) (struct sctp_tcb *stcb, struct sctp_association *asoc, int holds_lock); void (*sctp_ss_clear) (struct sctp_tcb *stcb, struct sctp_association *asoc, int clear_values, int holds_lock); void (*sctp_ss_init_stream) (struct sctp_stream_out *strq, struct sctp_stream_out *with_strq); void (*sctp_ss_add_to_stream) (struct sctp_tcb *stcb, struct sctp_association *asoc, struct sctp_stream_out *strq, struct sctp_stream_queue_pending *sp, int holds_lock); int (*sctp_ss_is_empty) (struct sctp_tcb *stcb, struct sctp_association *asoc); void (*sctp_ss_remove_from_stream) (struct sctp_tcb *stcb, struct sctp_association *asoc, struct sctp_stream_out *strq, struct sctp_stream_queue_pending *sp, int holds_lock); struct sctp_stream_out *(*sctp_ss_select_stream) (struct sctp_tcb *stcb, struct sctp_nets *net, struct sctp_association *asoc); void (*sctp_ss_scheduled) (struct sctp_tcb *stcb, struct sctp_nets *net, struct sctp_association *asoc, struct sctp_stream_out *strq, int moved_how_much); void (*sctp_ss_packet_done) (struct sctp_tcb *stcb, struct sctp_nets *net, struct sctp_association *asoc); int (*sctp_ss_get_value) (struct sctp_tcb *stcb, struct sctp_association *asoc, struct sctp_stream_out *strq, uint16_t * value); int (*sctp_ss_set_value) (struct sctp_tcb *stcb, struct sctp_association *asoc, struct sctp_stream_out *strq, uint16_t value); }; /* used to save ASCONF chunks for retransmission */ TAILQ_HEAD(sctp_asconf_head, sctp_asconf); struct sctp_asconf { TAILQ_ENTRY(sctp_asconf) next; uint32_t serial_number; uint16_t snd_count; struct mbuf *data; uint16_t len; }; /* used to save ASCONF-ACK chunks for retransmission */ TAILQ_HEAD(sctp_asconf_ackhead, sctp_asconf_ack); struct sctp_asconf_ack { TAILQ_ENTRY(sctp_asconf_ack) next; uint32_t serial_number; struct sctp_nets *last_sent_to; struct mbuf *data; uint16_t len; }; /* * Here we have information about each individual association that we track. * We probably in production would be more dynamic. But for ease of * implementation we will have a fixed array that we hunt for in a linear * fashion. */ struct sctp_association { /* association state */ int state; /* queue of pending addrs to add/delete */ struct sctp_asconf_addrhead asconf_queue; struct timeval time_entered; /* time we entered state */ struct timeval time_last_rcvd; struct timeval time_last_sent; struct timeval time_last_sat_advance; struct sctp_nonpad_sndrcvinfo def_send; /* timers and such */ struct sctp_timer dack_timer; /* Delayed ack timer */ struct sctp_timer asconf_timer; /* asconf */ struct sctp_timer strreset_timer; /* stream reset */ struct sctp_timer shut_guard_timer; /* shutdown guard */ struct sctp_timer autoclose_timer; /* automatic close timer */ struct sctp_timer delayed_event_timer; /* timer for delayed events */ struct sctp_timer delete_prim_timer; /* deleting primary dst */ /* list of restricted local addresses */ struct sctpladdr sctp_restricted_addrs; /* last local address pending deletion (waiting for an address add) */ struct sctp_ifa *asconf_addr_del_pending; /* Deleted primary destination (used to stop timer) */ struct sctp_nets *deleted_primary; struct sctpnetlisthead nets; /* remote address list */ /* Free chunk list */ struct sctpchunk_listhead free_chunks; /* Control chunk queue */ struct sctpchunk_listhead control_send_queue; /* ASCONF chunk queue */ struct sctpchunk_listhead asconf_send_queue; /* * Once a TSN hits the wire it is moved to the sent_queue. We * maintain two counts here (don't know if any but retran_cnt is * needed). The idea is that the sent_queue_retran_cnt reflects how * many chunks have been marked for retranmission by either T3-rxt * or FR. */ struct sctpchunk_listhead sent_queue; struct sctpchunk_listhead send_queue; - /* re-assembly queue for fragmented chunks on the inbound path */ - struct sctpchunk_listhead reasmqueue; - /* Scheduling queues */ union scheduling_data ss_data; /* * This pointer will be set to NULL most of the time. But when we * have a fragmented message, where we could not get out all of the * message at the last send then this will point to the stream to go * get data from. */ struct sctp_stream_out *locked_on_sending; /* If an iterator is looking at me, this is it */ struct sctp_iterator *stcb_starting_point_for_iterator; /* ASCONF save the last ASCONF-ACK so we can resend it if necessary */ struct sctp_asconf_ackhead asconf_ack_sent; /* * pointer to last stream reset queued to control queue by us with * requests. */ struct sctp_tmit_chunk *str_reset; /* * if Source Address Selection happening, this will rotate through * the link list. */ struct sctp_laddr *last_used_address; /* stream arrays */ struct sctp_stream_in *strmin; struct sctp_stream_out *strmout; uint8_t *mapping_array; /* primary destination to use */ struct sctp_nets *primary_destination; struct sctp_nets *alternate; /* If primary is down or PF */ /* For CMT */ struct sctp_nets *last_net_cmt_send_started; /* last place I got a data chunk from */ struct sctp_nets *last_data_chunk_from; /* last place I got a control from */ struct sctp_nets *last_control_chunk_from; /* circular looking for output selection */ struct sctp_stream_out *last_out_stream; /* * wait to the point the cum-ack passes req->send_reset_at_tsn for * any req on the list. */ struct sctp_resethead resetHead; /* queue of chunks waiting to be sent into the local stack */ struct sctp_readhead pending_reply_queue; /* JRS - the congestion control functions are in this struct */ struct sctp_cc_functions cc_functions; /* * JRS - value to store the currently loaded congestion control * module */ uint32_t congestion_control_module; /* RS - the stream scheduling functions are in this struct */ struct sctp_ss_functions ss_functions; /* RS - value to store the currently loaded stream scheduling module */ uint32_t stream_scheduling_module; uint32_t vrf_id; - + uint32_t assoc_msg_id; uint32_t cookie_preserve_req; /* ASCONF next seq I am sending out, inits at init-tsn */ uint32_t asconf_seq_out; uint32_t asconf_seq_out_acked; /* ASCONF last received ASCONF from peer, starts at peer's TSN-1 */ uint32_t asconf_seq_in; /* next seq I am sending in str reset messages */ uint32_t str_reset_seq_out; /* next seq I am expecting in str reset messages */ uint32_t str_reset_seq_in; /* various verification tag information */ uint32_t my_vtag; /* The tag to be used. if assoc is re-initited * by remote end, and I have unlocked this * will be regenerated to a new random value. */ uint32_t peer_vtag; /* The peers last tag */ uint32_t my_vtag_nonce; uint32_t peer_vtag_nonce; uint32_t assoc_id; /* This is the SCTP fragmentation threshold */ uint32_t smallest_mtu; /* * Special hook for Fast retransmit, allows us to track the highest * TSN that is NEW in this SACK if gap ack blocks are present. */ uint32_t this_sack_highest_gap; /* * The highest consecutive TSN that has been acked by peer on my * sends */ uint32_t last_acked_seq; /* The next TSN that I will use in sending. */ uint32_t sending_seq; /* Original seq number I used ??questionable to keep?? */ uint32_t init_seq_number; /* The Advanced Peer Ack Point, as required by the PR-SCTP */ /* (A1 in Section 4.2) */ uint32_t advanced_peer_ack_point; /* * The highest consequetive TSN at the bottom of the mapping array * (for his sends). */ uint32_t cumulative_tsn; /* * Used to track the mapping array and its offset bits. This MAY be * lower then cumulative_tsn. */ uint32_t mapping_array_base_tsn; /* * used to track highest TSN we have received and is listed in the * mapping array. */ uint32_t highest_tsn_inside_map; /* EY - new NR variables used for nr_sack based on mapping_array */ uint8_t *nr_mapping_array; uint32_t highest_tsn_inside_nr_map; uint32_t fast_recovery_tsn; uint32_t sat_t3_recovery_tsn; uint32_t tsn_last_delivered; /* * For the pd-api we should re-write this a bit more efficent. We * could have multiple sctp_queued_to_read's that we are building at * once. Now we only do this when we get ready to deliver to the * socket buffer. Note that we depend on the fact that the struct is * "stuck" on the read queue until we finish all the pd-api. */ struct sctp_queued_to_read *control_pdapi; uint32_t tsn_of_pdapi_last_delivered; uint32_t pdapi_ppid; uint32_t context; uint32_t last_reset_action[SCTP_MAX_RESET_PARAMS]; uint32_t last_sending_seq[SCTP_MAX_RESET_PARAMS]; uint32_t last_base_tsnsent[SCTP_MAX_RESET_PARAMS]; #ifdef SCTP_ASOCLOG_OF_TSNS /* * special log - This adds considerable size to the asoc, but * provides a log that you can use to detect problems via kgdb. */ struct sctp_tsn_log in_tsnlog[SCTP_TSN_LOG_SIZE]; struct sctp_tsn_log out_tsnlog[SCTP_TSN_LOG_SIZE]; uint32_t cumack_log[SCTP_TSN_LOG_SIZE]; uint32_t cumack_logsnt[SCTP_TSN_LOG_SIZE]; uint16_t tsn_in_at; uint16_t tsn_out_at; uint16_t tsn_in_wrapped; uint16_t tsn_out_wrapped; uint16_t cumack_log_at; uint16_t cumack_log_atsnt; #endif /* SCTP_ASOCLOG_OF_TSNS */ #ifdef SCTP_FS_SPEC_LOG struct sctp_fs_spec_log fslog[SCTP_FS_SPEC_LOG_SIZE]; uint16_t fs_index; #endif /* * window state information and smallest MTU that I use to bound * segmentation */ uint32_t peers_rwnd; uint32_t my_rwnd; uint32_t my_last_reported_rwnd; uint32_t sctp_frag_point; uint32_t total_output_queue_size; uint32_t sb_cc; /* shadow of sb_cc */ uint32_t sb_send_resv; /* amount reserved on a send */ uint32_t my_rwnd_control_len; /* shadow of sb_mbcnt used for rwnd * control */ #ifdef INET6 uint32_t default_flowlabel; #endif uint32_t pr_sctp_cnt; int ctrl_queue_cnt; /* could be removed REM - NO IT CAN'T!! RRS */ /* * All outbound datagrams queue into this list from the individual * stream queue. Here they get assigned a TSN and then await * sending. The stream seq comes when it is first put in the * individual str queue */ unsigned int stream_queue_cnt; unsigned int send_queue_cnt; unsigned int sent_queue_cnt; unsigned int sent_queue_cnt_removeable; /* * Number on sent queue that are marked for retran until this value * is 0 we only send one packet of retran'ed data. */ unsigned int sent_queue_retran_cnt; unsigned int size_on_reasm_queue; unsigned int cnt_on_reasm_queue; unsigned int fwd_tsn_cnt; /* amount of data (bytes) currently in flight (on all destinations) */ unsigned int total_flight; /* Total book size in flight */ unsigned int total_flight_count; /* count of chunks used with * book total */ /* count of destinaton nets and list of destination nets */ unsigned int numnets; /* Total error count on this association */ unsigned int overall_error_count; unsigned int cnt_msg_on_sb; /* All stream count of chunks for delivery */ unsigned int size_on_all_streams; unsigned int cnt_on_all_streams; /* Heart Beat delay in ms */ uint32_t heart_beat_delay; /* autoclose */ unsigned int sctp_autoclose_ticks; /* how many preopen streams we have */ unsigned int pre_open_streams; /* How many streams I support coming into me */ unsigned int max_inbound_streams; /* the cookie life I award for any cookie, in seconds */ unsigned int cookie_life; /* time to delay acks for */ unsigned int delayed_ack; unsigned int old_delayed_ack; unsigned int sack_freq; unsigned int data_pkts_seen; unsigned int numduptsns; int dup_tsns[SCTP_MAX_DUP_TSNS]; unsigned int initial_init_rto_max; /* initial RTO for INIT's */ unsigned int initial_rto; /* initial send RTO */ unsigned int minrto; /* per assoc RTO-MIN */ unsigned int maxrto; /* per assoc RTO-MAX */ /* authentication fields */ sctp_auth_chklist_t *local_auth_chunks; sctp_auth_chklist_t *peer_auth_chunks; sctp_hmaclist_t *local_hmacs; /* local HMACs supported */ sctp_hmaclist_t *peer_hmacs; /* peer HMACs supported */ struct sctp_keyhead shared_keys; /* assoc's shared keys */ sctp_authinfo_t authinfo; /* randoms, cached keys */ /* * refcnt to block freeing when a sender or receiver is off coping * user data in. */ uint32_t refcnt; uint32_t chunks_on_out_queue; /* total chunks floating around, * locked by send socket buffer */ uint32_t peers_adaptation; uint16_t peer_hmac_id; /* peer HMAC id to send */ /* * Being that we have no bag to collect stale cookies, and that we * really would not want to anyway.. we will count them in this * counter. We of course feed them to the pigeons right away (I have * always thought of pigeons as flying rats). */ uint16_t stale_cookie_count; /* * For the partial delivery API, if up, invoked this is what last * TSN I delivered */ uint16_t str_of_pdapi; uint16_t ssn_of_pdapi; /* counts of actual built streams. Allocation may be more however */ /* could re-arrange to optimize space here. */ uint16_t streamincnt; uint16_t streamoutcnt; uint16_t strm_realoutsize; uint16_t strm_pending_add_size; /* my maximum number of retrans of INIT and SEND */ /* copied from SCTP but should be individually setable */ uint16_t max_init_times; uint16_t max_send_times; uint16_t def_net_failure; uint16_t def_net_pf_threshold; /* * lock flag: 0 is ok to send, 1+ (duals as a retran count) is * awaiting ACK */ uint16_t mapping_array_size; uint16_t last_strm_seq_delivered; uint16_t last_strm_no_delivered; uint16_t last_revoke_count; int16_t num_send_timers_up; uint16_t stream_locked_on; uint16_t ecn_echo_cnt_onq; uint16_t free_chunk_cnt; uint8_t stream_locked; uint8_t authenticated; /* packet authenticated ok */ /* * This flag indicates that a SACK need to be sent. Initially this * is 1 to send the first sACK immediately. */ uint8_t send_sack; /* max burst of new packets into the network */ uint32_t max_burst; /* max burst of fast retransmit packets */ uint32_t fr_max_burst; uint8_t sat_network; /* RTT is in range of sat net or greater */ uint8_t sat_network_lockout; /* lockout code */ uint8_t burst_limit_applied; /* Burst limit in effect at last send? */ /* flag goes on when we are doing a partial delivery api */ uint8_t hb_random_values[4]; uint8_t fragmented_delivery_inprogress; uint8_t fragment_flags; uint8_t last_flags_delivered; uint8_t hb_ect_randombit; uint8_t hb_random_idx; uint8_t default_dscp; uint8_t asconf_del_pending; /* asconf delete last addr pending */ uint8_t trigger_reset; /* * This value, plus all other ack'd but above cum-ack is added * together to cross check against the bit that we have yet to * define (probably in the SACK). When the cum-ack is updated, this * sum is updated as well. */ /* Flags whether an extension is supported or not */ uint8_t ecn_supported; uint8_t prsctp_supported; uint8_t auth_supported; uint8_t asconf_supported; uint8_t reconfig_supported; uint8_t nrsack_supported; uint8_t pktdrop_supported; + uint8_t idata_supported; /* Did the peer make the stream config (add out) request */ uint8_t peer_req_out; uint8_t local_strreset_support; - uint8_t peer_supports_nat; struct sctp_scoping scope; /* flags to handle send alternate net tracking */ uint8_t used_alt_asconfack; uint8_t fast_retran_loss_recovery; uint8_t sat_t3_loss_recovery; uint8_t dropped_special_cnt; uint8_t seen_a_sack_this_pkt; uint8_t stream_reset_outstanding; uint8_t stream_reset_out_is_outstanding; uint8_t delayed_connection; uint8_t ifp_had_enobuf; uint8_t saw_sack_with_frags; uint8_t saw_sack_with_nr_frags; uint8_t in_asocid_hash; uint8_t assoc_up_sent; uint8_t adaptation_needed; uint8_t adaptation_sent; /* CMT variables */ uint8_t cmt_dac_pkts_rcvd; uint8_t sctp_cmt_on_off; uint8_t iam_blocking; uint8_t cookie_how[8]; /* JRS 5/21/07 - CMT PF variable */ uint8_t sctp_cmt_pf; uint8_t use_precise_time; uint64_t sctp_features; uint32_t max_cwnd; uint16_t port; /* remote UDP encapsulation port */ /* * The mapping array is used to track out of order sequences above * last_acked_seq. 0 indicates packet missing 1 indicates packet * rec'd. We slide it up every time we raise last_acked_seq and 0 * trailing locactions out. If I get a TSN above the array * mappingArraySz, I discard the datagram and let retransmit happen. */ uint32_t marked_retrans; uint32_t timoinit; uint32_t timodata; uint32_t timosack; uint32_t timoshutdown; uint32_t timoheartbeat; uint32_t timocookie; uint32_t timoshutdownack; struct timeval start_time; struct timeval discontinuity_time; uint64_t abandoned_unsent[SCTP_PR_SCTP_MAX + 1]; uint64_t abandoned_sent[SCTP_PR_SCTP_MAX + 1]; }; #endif Index: head/sys/netinet/sctp_sysctl.h =================================================================== --- head/sys/netinet/sctp_sysctl.h (revision 297661) +++ head/sys/netinet/sctp_sysctl.h (revision 297662) @@ -1,583 +1,583 @@ /*- * Copyright (c) 2007, by Cisco Systems, Inc. All rights reserved. * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * a) Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * b) Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the distribution. * * c) Neither the name of Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #ifndef _NETINET_SCTP_SYSCTL_H_ #define _NETINET_SCTP_SYSCTL_H_ #include #include struct sctp_sysctl { uint32_t sctp_sendspace; uint32_t sctp_recvspace; uint32_t sctp_auto_asconf; uint32_t sctp_multiple_asconfs; uint32_t sctp_ecn_enable; uint32_t sctp_pr_enable; uint32_t sctp_auth_enable; uint32_t sctp_asconf_enable; uint32_t sctp_reconfig_enable; uint32_t sctp_nrsack_enable; uint32_t sctp_pktdrop_enable; uint32_t sctp_fr_max_burst_default; uint32_t sctp_strict_sacks; uint32_t sctp_peer_chunk_oh; uint32_t sctp_max_burst_default; uint32_t sctp_max_chunks_on_queue; uint32_t sctp_hashtblsize; uint32_t sctp_pcbtblsize; uint32_t sctp_min_split_point; uint32_t sctp_chunkscale; uint32_t sctp_delayed_sack_time_default; uint32_t sctp_sack_freq_default; uint32_t sctp_system_free_resc_limit; uint32_t sctp_asoc_free_resc_limit; uint32_t sctp_heartbeat_interval_default; uint32_t sctp_pmtu_raise_time_default; uint32_t sctp_shutdown_guard_time_default; uint32_t sctp_secret_lifetime_default; uint32_t sctp_rto_max_default; uint32_t sctp_rto_min_default; uint32_t sctp_rto_initial_default; uint32_t sctp_init_rto_max_default; uint32_t sctp_valid_cookie_life_default; uint32_t sctp_init_rtx_max_default; uint32_t sctp_assoc_rtx_max_default; uint32_t sctp_path_rtx_max_default; uint32_t sctp_path_pf_threshold; uint32_t sctp_add_more_threshold; uint32_t sctp_nr_incoming_streams_default; uint32_t sctp_nr_outgoing_streams_default; uint32_t sctp_cmt_on_off; uint32_t sctp_cmt_use_dac; uint32_t sctp_use_cwnd_based_maxburst; uint32_t sctp_nat_friendly; uint32_t sctp_L2_abc_variable; uint32_t sctp_mbuf_threshold_count; uint32_t sctp_do_drain; uint32_t sctp_hb_maxburst; uint32_t sctp_abort_if_one_2_one_hits_limit; uint32_t sctp_strict_data_order; uint32_t sctp_min_residual; uint32_t sctp_max_retran_chunk; uint32_t sctp_logging_level; /* JRS - Variable for default congestion control module */ uint32_t sctp_default_cc_module; /* RS - Variable for default stream scheduling module */ uint32_t sctp_default_ss_module; uint32_t sctp_default_frag_interleave; uint32_t sctp_mobility_base; uint32_t sctp_mobility_fasthandoff; uint32_t sctp_inits_include_nat_friendly; uint32_t sctp_rttvar_bw; uint32_t sctp_rttvar_rtt; uint32_t sctp_rttvar_eqret; uint32_t sctp_steady_step; uint32_t sctp_use_dccc_ecn; uint32_t sctp_diag_info_code; #if defined(SCTP_LOCAL_TRACE_BUF) struct sctp_log sctp_log; #endif uint32_t sctp_udp_tunneling_port; uint32_t sctp_enable_sack_immediately; uint32_t sctp_vtag_time_wait; uint32_t sctp_buffer_splitting; uint32_t sctp_initial_cwnd; uint32_t sctp_blackhole; #if defined(SCTP_DEBUG) uint32_t sctp_debug_on; #endif #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) uint32_t sctp_output_unlocked; #endif }; /* * limits for the sysctl variables */ /* maxdgram: Maximum outgoing SCTP buffer size */ #define SCTPCTL_MAXDGRAM_DESC "Maximum outgoing SCTP buffer size" #define SCTPCTL_MAXDGRAM_MIN 0 #define SCTPCTL_MAXDGRAM_MAX 0xFFFFFFFF #define SCTPCTL_MAXDGRAM_DEFAULT 262144 /* 256k */ /* recvspace: Maximum incoming SCTP buffer size */ #define SCTPCTL_RECVSPACE_DESC "Maximum incoming SCTP buffer size" #define SCTPCTL_RECVSPACE_MIN 0 #define SCTPCTL_RECVSPACE_MAX 0xFFFFFFFF #define SCTPCTL_RECVSPACE_DEFAULT 262144 /* 256k */ /* autoasconf: Enable SCTP Auto-ASCONF */ #define SCTPCTL_AUTOASCONF_DESC "Enable SCTP Auto-ASCONF" #define SCTPCTL_AUTOASCONF_MIN 0 #define SCTPCTL_AUTOASCONF_MAX 1 #define SCTPCTL_AUTOASCONF_DEFAULT 1 /* autoasconf: Enable SCTP Auto-ASCONF */ #define SCTPCTL_MULTIPLEASCONFS_DESC "Enable SCTP Muliple-ASCONFs" #define SCTPCTL_MULTIPLEASCONFS_MIN 0 #define SCTPCTL_MULTIPLEASCONFS_MAX 1 #define SCTPCTL_MULTIPLEASCONFS_DEFAULT SCTP_DEFAULT_MULTIPLE_ASCONFS /* ecn_enable: Enable SCTP ECN */ #define SCTPCTL_ECN_ENABLE_DESC "Enable SCTP ECN" #define SCTPCTL_ECN_ENABLE_MIN 0 #define SCTPCTL_ECN_ENABLE_MAX 1 #define SCTPCTL_ECN_ENABLE_DEFAULT 1 /* pr_enable: Enable PR-SCTP */ #define SCTPCTL_PR_ENABLE_DESC "Enable PR-SCTP" #define SCTPCTL_PR_ENABLE_MIN 0 #define SCTPCTL_PR_ENABLE_MAX 1 #define SCTPCTL_PR_ENABLE_DEFAULT 1 /* auth_enable: Enable SCTP AUTH function */ #define SCTPCTL_AUTH_ENABLE_DESC "Enable SCTP AUTH function" #define SCTPCTL_AUTH_ENABLE_MIN 0 #define SCTPCTL_AUTH_ENABLE_MAX 1 #define SCTPCTL_AUTH_ENABLE_DEFAULT 1 /* asconf_enable: Enable SCTP ASCONF */ #define SCTPCTL_ASCONF_ENABLE_DESC "Enable SCTP ASCONF" #define SCTPCTL_ASCONF_ENABLE_MIN 0 #define SCTPCTL_ASCONF_ENABLE_MAX 1 #define SCTPCTL_ASCONF_ENABLE_DEFAULT 1 /* reconfig_enable: Enable SCTP RE-CONFIG */ #define SCTPCTL_RECONFIG_ENABLE_DESC "Enable SCTP RE-CONFIG" #define SCTPCTL_RECONFIG_ENABLE_MIN 0 #define SCTPCTL_RECONFIG_ENABLE_MAX 1 #define SCTPCTL_RECONFIG_ENABLE_DEFAULT 1 /* nrsack_enable: Enable NR_SACK */ #define SCTPCTL_NRSACK_ENABLE_DESC "Enable SCTP NR-SACK" #define SCTPCTL_NRSACK_ENABLE_MIN 0 #define SCTPCTL_NRSACK_ENABLE_MAX 1 #define SCTPCTL_NRSACK_ENABLE_DEFAULT 0 /* pktdrop_enable: Enable SCTP Packet Drop Reports */ #define SCTPCTL_PKTDROP_ENABLE_DESC "Enable SCTP PKTDROP" #define SCTPCTL_PKTDROP_ENABLE_MIN 0 #define SCTPCTL_PKTDROP_ENABLE_MAX 1 #define SCTPCTL_PKTDROP_ENABLE_DEFAULT 0 /* strict_sacks: Enable SCTP Strict SACK checking */ #define SCTPCTL_STRICT_SACKS_DESC "Enable SCTP Strict SACK checking" #define SCTPCTL_STRICT_SACKS_MIN 0 #define SCTPCTL_STRICT_SACKS_MAX 1 #define SCTPCTL_STRICT_SACKS_DEFAULT 1 /* loopback_nocsum: Enable NO Csum on packets sent on loopback */ #define SCTPCTL_LOOPBACK_NOCSUM_DESC "Enable NO Csum on packets sent on loopback" #define SCTPCTL_LOOPBACK_NOCSUM_MIN 0 #define SCTPCTL_LOOPBACK_NOCSUM_MAX 1 #define SCTPCTL_LOOPBACK_NOCSUM_DEFAULT 1 /* peer_chkoh: Amount to debit peers rwnd per chunk sent */ #define SCTPCTL_PEER_CHKOH_DESC "Amount to debit peers rwnd per chunk sent" #define SCTPCTL_PEER_CHKOH_MIN 0 #define SCTPCTL_PEER_CHKOH_MAX 0xFFFFFFFF #define SCTPCTL_PEER_CHKOH_DEFAULT 256 /* maxburst: Default max burst for sctp endpoints */ #define SCTPCTL_MAXBURST_DESC "Default max burst for sctp endpoints" #define SCTPCTL_MAXBURST_MIN 0 #define SCTPCTL_MAXBURST_MAX 0xFFFFFFFF #define SCTPCTL_MAXBURST_DEFAULT SCTP_DEF_MAX_BURST /* fr_maxburst: Default max burst for sctp endpoints when fast retransmitting */ #define SCTPCTL_FRMAXBURST_DESC "Default fr max burst for sctp endpoints" #define SCTPCTL_FRMAXBURST_MIN 0 #define SCTPCTL_FRMAXBURST_MAX 0xFFFFFFFF #define SCTPCTL_FRMAXBURST_DEFAULT SCTP_DEF_FRMAX_BURST /* maxchunks: Default max chunks on queue per asoc */ #define SCTPCTL_MAXCHUNKS_DESC "Default max chunks on queue per asoc" #define SCTPCTL_MAXCHUNKS_MIN 0 #define SCTPCTL_MAXCHUNKS_MAX 0xFFFFFFFF #define SCTPCTL_MAXCHUNKS_DEFAULT SCTP_ASOC_MAX_CHUNKS_ON_QUEUE /* tcbhashsize: Tunable for Hash table sizes */ #define SCTPCTL_TCBHASHSIZE_DESC "Tunable for TCB hash table sizes" #define SCTPCTL_TCBHASHSIZE_MIN 1 #define SCTPCTL_TCBHASHSIZE_MAX 0xFFFFFFFF #define SCTPCTL_TCBHASHSIZE_DEFAULT SCTP_TCBHASHSIZE /* pcbhashsize: Tunable for PCB Hash table sizes */ #define SCTPCTL_PCBHASHSIZE_DESC "Tunable for PCB hash table sizes" #define SCTPCTL_PCBHASHSIZE_MIN 1 #define SCTPCTL_PCBHASHSIZE_MAX 0xFFFFFFFF #define SCTPCTL_PCBHASHSIZE_DEFAULT SCTP_PCBHASHSIZE /* min_split_point: Minimum size when splitting a chunk */ #define SCTPCTL_MIN_SPLIT_POINT_DESC "Minimum size when splitting a chunk" #define SCTPCTL_MIN_SPLIT_POINT_MIN 0 #define SCTPCTL_MIN_SPLIT_POINT_MAX 0xFFFFFFFF #define SCTPCTL_MIN_SPLIT_POINT_DEFAULT SCTP_DEFAULT_SPLIT_POINT_MIN /* chunkscale: Tunable for Scaling of number of chunks and messages */ #define SCTPCTL_CHUNKSCALE_DESC "Tunable for Scaling of number of chunks and messages" #define SCTPCTL_CHUNKSCALE_MIN 1 #define SCTPCTL_CHUNKSCALE_MAX 0xFFFFFFFF #define SCTPCTL_CHUNKSCALE_DEFAULT SCTP_CHUNKQUEUE_SCALE /* delayed_sack_time: Default delayed SACK timer in ms */ #define SCTPCTL_DELAYED_SACK_TIME_DESC "Default delayed SACK timer in ms" #define SCTPCTL_DELAYED_SACK_TIME_MIN 0 #define SCTPCTL_DELAYED_SACK_TIME_MAX 0xFFFFFFFF #define SCTPCTL_DELAYED_SACK_TIME_DEFAULT SCTP_RECV_MSEC /* sack_freq: Default SACK frequency */ #define SCTPCTL_SACK_FREQ_DESC "Default SACK frequency" #define SCTPCTL_SACK_FREQ_MIN 0 #define SCTPCTL_SACK_FREQ_MAX 0xFFFFFFFF #define SCTPCTL_SACK_FREQ_DEFAULT SCTP_DEFAULT_SACK_FREQ /* sys_resource: Max number of cached resources in the system */ #define SCTPCTL_SYS_RESOURCE_DESC "Max number of cached resources in the system" #define SCTPCTL_SYS_RESOURCE_MIN 0 #define SCTPCTL_SYS_RESOURCE_MAX 0xFFFFFFFF #define SCTPCTL_SYS_RESOURCE_DEFAULT SCTP_DEF_SYSTEM_RESC_LIMIT /* asoc_resource: Max number of cached resources in an asoc */ #define SCTPCTL_ASOC_RESOURCE_DESC "Max number of cached resources in an asoc" #define SCTPCTL_ASOC_RESOURCE_MIN 0 #define SCTPCTL_ASOC_RESOURCE_MAX 0xFFFFFFFF #define SCTPCTL_ASOC_RESOURCE_DEFAULT SCTP_DEF_ASOC_RESC_LIMIT /* heartbeat_interval: Default heartbeat interval in ms */ #define SCTPCTL_HEARTBEAT_INTERVAL_DESC "Default heartbeat interval in ms" #define SCTPCTL_HEARTBEAT_INTERVAL_MIN 0 #define SCTPCTL_HEARTBEAT_INTERVAL_MAX 0xFFFFFFFF #define SCTPCTL_HEARTBEAT_INTERVAL_DEFAULT SCTP_HB_DEFAULT_MSEC /* pmtu_raise_time: Default PMTU raise timer in seconds */ #define SCTPCTL_PMTU_RAISE_TIME_DESC "Default PMTU raise timer in seconds" #define SCTPCTL_PMTU_RAISE_TIME_MIN 0 #define SCTPCTL_PMTU_RAISE_TIME_MAX 0xFFFFFFFF #define SCTPCTL_PMTU_RAISE_TIME_DEFAULT SCTP_DEF_PMTU_RAISE_SEC /* shutdown_guard_time: Default shutdown guard timer in seconds */ #define SCTPCTL_SHUTDOWN_GUARD_TIME_DESC "Shutdown guard timer in seconds (0 means 5 times RTO.Max)" #define SCTPCTL_SHUTDOWN_GUARD_TIME_MIN 0 #define SCTPCTL_SHUTDOWN_GUARD_TIME_MAX 0xFFFFFFFF #define SCTPCTL_SHUTDOWN_GUARD_TIME_DEFAULT 0 /* secret_lifetime: Default secret lifetime in seconds */ #define SCTPCTL_SECRET_LIFETIME_DESC "Default secret lifetime in seconds" #define SCTPCTL_SECRET_LIFETIME_MIN 0 #define SCTPCTL_SECRET_LIFETIME_MAX 0xFFFFFFFF #define SCTPCTL_SECRET_LIFETIME_DEFAULT SCTP_DEFAULT_SECRET_LIFE_SEC /* rto_max: Default maximum retransmission timeout in ms */ #define SCTPCTL_RTO_MAX_DESC "Default maximum retransmission timeout in ms" #define SCTPCTL_RTO_MAX_MIN 0 #define SCTPCTL_RTO_MAX_MAX 0xFFFFFFFF #define SCTPCTL_RTO_MAX_DEFAULT SCTP_RTO_UPPER_BOUND /* rto_min: Default minimum retransmission timeout in ms */ #define SCTPCTL_RTO_MIN_DESC "Default minimum retransmission timeout in ms" #define SCTPCTL_RTO_MIN_MIN 0 #define SCTPCTL_RTO_MIN_MAX 0xFFFFFFFF #define SCTPCTL_RTO_MIN_DEFAULT SCTP_RTO_LOWER_BOUND /* rto_initial: Default initial retransmission timeout in ms */ #define SCTPCTL_RTO_INITIAL_DESC "Default initial retransmission timeout in ms" #define SCTPCTL_RTO_INITIAL_MIN 0 #define SCTPCTL_RTO_INITIAL_MAX 0xFFFFFFFF #define SCTPCTL_RTO_INITIAL_DEFAULT SCTP_RTO_INITIAL /* init_rto_max: Default maximum retransmission timeout during association setup in ms */ #define SCTPCTL_INIT_RTO_MAX_DESC "Default maximum retransmission timeout during association setup in ms" #define SCTPCTL_INIT_RTO_MAX_MIN 0 #define SCTPCTL_INIT_RTO_MAX_MAX 0xFFFFFFFF #define SCTPCTL_INIT_RTO_MAX_DEFAULT SCTP_RTO_UPPER_BOUND /* valid_cookie_life: Default cookie lifetime in sec */ #define SCTPCTL_VALID_COOKIE_LIFE_DESC "Default cookie lifetime in seconds" #define SCTPCTL_VALID_COOKIE_LIFE_MIN 0 #define SCTPCTL_VALID_COOKIE_LIFE_MAX 0xFFFFFFFF #define SCTPCTL_VALID_COOKIE_LIFE_DEFAULT SCTP_DEFAULT_COOKIE_LIFE /* init_rtx_max: Default maximum number of retransmission for INIT chunks */ #define SCTPCTL_INIT_RTX_MAX_DESC "Default maximum number of retransmission for INIT chunks" #define SCTPCTL_INIT_RTX_MAX_MIN 0 #define SCTPCTL_INIT_RTX_MAX_MAX 0xFFFFFFFF #define SCTPCTL_INIT_RTX_MAX_DEFAULT SCTP_DEF_MAX_INIT /* assoc_rtx_max: Default maximum number of retransmissions per association */ #define SCTPCTL_ASSOC_RTX_MAX_DESC "Default maximum number of retransmissions per association" #define SCTPCTL_ASSOC_RTX_MAX_MIN 0 #define SCTPCTL_ASSOC_RTX_MAX_MAX 0xFFFFFFFF #define SCTPCTL_ASSOC_RTX_MAX_DEFAULT SCTP_DEF_MAX_SEND /* path_rtx_max: Default maximum of retransmissions per path */ #define SCTPCTL_PATH_RTX_MAX_DESC "Default maximum of retransmissions per path" #define SCTPCTL_PATH_RTX_MAX_MIN 0 #define SCTPCTL_PATH_RTX_MAX_MAX 0xFFFFFFFF #define SCTPCTL_PATH_RTX_MAX_DEFAULT SCTP_DEF_MAX_PATH_RTX /* path_pf_threshold: threshold for considering the path potentially failed */ #define SCTPCTL_PATH_PF_THRESHOLD_DESC "Default potentially failed threshold" #define SCTPCTL_PATH_PF_THRESHOLD_MIN 0 #define SCTPCTL_PATH_PF_THRESHOLD_MAX 0xFFFF #define SCTPCTL_PATH_PF_THRESHOLD_DEFAULT SCTPCTL_PATH_PF_THRESHOLD_MAX /* add_more_on_output: When space-wise is it worthwhile to try to add more to a socket send buffer */ #define SCTPCTL_ADD_MORE_ON_OUTPUT_DESC "When space-wise is it worthwhile to try to add more to a socket send buffer" #define SCTPCTL_ADD_MORE_ON_OUTPUT_MIN 0 #define SCTPCTL_ADD_MORE_ON_OUTPUT_MAX 0xFFFFFFFF #define SCTPCTL_ADD_MORE_ON_OUTPUT_DEFAULT SCTP_DEFAULT_ADD_MORE /* incoming_streams: Default number of incoming streams */ #define SCTPCTL_INCOMING_STREAMS_DESC "Default number of incoming streams" #define SCTPCTL_INCOMING_STREAMS_MIN 1 #define SCTPCTL_INCOMING_STREAMS_MAX 65535 #define SCTPCTL_INCOMING_STREAMS_DEFAULT SCTP_ISTREAM_INITIAL /* outgoing_streams: Default number of outgoing streams */ #define SCTPCTL_OUTGOING_STREAMS_DESC "Default number of outgoing streams" #define SCTPCTL_OUTGOING_STREAMS_MIN 1 #define SCTPCTL_OUTGOING_STREAMS_MAX 65535 #define SCTPCTL_OUTGOING_STREAMS_DEFAULT SCTP_OSTREAM_INITIAL /* cmt_on_off: CMT on/off flag */ #define SCTPCTL_CMT_ON_OFF_DESC "CMT settings" #define SCTPCTL_CMT_ON_OFF_MIN SCTP_CMT_OFF #define SCTPCTL_CMT_ON_OFF_MAX SCTP_CMT_MAX #define SCTPCTL_CMT_ON_OFF_DEFAULT SCTP_CMT_OFF /* cmt_use_dac: CMT DAC on/off flag */ #define SCTPCTL_CMT_USE_DAC_DESC "CMT DAC on/off flag" #define SCTPCTL_CMT_USE_DAC_MIN 0 #define SCTPCTL_CMT_USE_DAC_MAX 1 #define SCTPCTL_CMT_USE_DAC_DEFAULT 0 /* cwnd_maxburst: Use a CWND adjusting maxburst */ #define SCTPCTL_CWND_MAXBURST_DESC "Use a CWND adjusting maxburst" #define SCTPCTL_CWND_MAXBURST_MIN 0 #define SCTPCTL_CWND_MAXBURST_MAX 1 #define SCTPCTL_CWND_MAXBURST_DEFAULT 1 /* nat_friendly: SCTP NAT friendly operation */ #define SCTPCTL_NAT_FRIENDLY_DESC "SCTP NAT friendly operation" #define SCTPCTL_NAT_FRIENDLY_MIN 0 #define SCTPCTL_NAT_FRIENDLY_MAX 1 #define SCTPCTL_NAT_FRIENDLY_DEFAULT 1 /* abc_l_var: SCTP ABC max increase per SACK (L) */ #define SCTPCTL_ABC_L_VAR_DESC "SCTP ABC max increase per SACK (L)" #define SCTPCTL_ABC_L_VAR_MIN 0 #define SCTPCTL_ABC_L_VAR_MAX 0xFFFFFFFF #define SCTPCTL_ABC_L_VAR_DEFAULT 2 /* max_chained_mbufs: Default max number of small mbufs on a chain */ #define SCTPCTL_MAX_CHAINED_MBUFS_DESC "Default max number of small mbufs on a chain" #define SCTPCTL_MAX_CHAINED_MBUFS_MIN 0 #define SCTPCTL_MAX_CHAINED_MBUFS_MAX 0xFFFFFFFF #define SCTPCTL_MAX_CHAINED_MBUFS_DEFAULT SCTP_DEFAULT_MBUFS_IN_CHAIN /* do_sctp_drain: Should SCTP respond to the drain calls */ #define SCTPCTL_DO_SCTP_DRAIN_DESC "Should SCTP respond to the drain calls" #define SCTPCTL_DO_SCTP_DRAIN_MIN 0 #define SCTPCTL_DO_SCTP_DRAIN_MAX 1 #define SCTPCTL_DO_SCTP_DRAIN_DEFAULT 1 /* hb_max_burst: Confirmation Heartbeat max burst? */ #define SCTPCTL_HB_MAX_BURST_DESC "Confirmation Heartbeat max burst" #define SCTPCTL_HB_MAX_BURST_MIN 1 #define SCTPCTL_HB_MAX_BURST_MAX 0xFFFFFFFF #define SCTPCTL_HB_MAX_BURST_DEFAULT SCTP_DEF_HBMAX_BURST /* abort_at_limit: When one-2-one hits qlimit abort */ #define SCTPCTL_ABORT_AT_LIMIT_DESC "When one-2-one hits qlimit abort" #define SCTPCTL_ABORT_AT_LIMIT_MIN 0 #define SCTPCTL_ABORT_AT_LIMIT_MAX 1 #define SCTPCTL_ABORT_AT_LIMIT_DEFAULT 0 /* strict_data_order: Enforce strict data ordering, abort if control inside data */ #define SCTPCTL_STRICT_DATA_ORDER_DESC "Enforce strict data ordering, abort if control inside data" #define SCTPCTL_STRICT_DATA_ORDER_MIN 0 #define SCTPCTL_STRICT_DATA_ORDER_MAX 1 -#define SCTPCTL_STRICT_DATA_ORDER_DEFAULT 0 +#define SCTPCTL_STRICT_DATA_ORDER_DEFAULT 1 /* min_residual: min residual in a data fragment leftover */ #define SCTPCTL_MIN_RESIDUAL_DESC "Minimum residual data chunk in second part of split" #define SCTPCTL_MIN_RESIDUAL_MIN 20 #define SCTPCTL_MIN_RESIDUAL_MAX 65535 #define SCTPCTL_MIN_RESIDUAL_DEFAULT 1452 /* max_retran_chunk: max chunk retransmissions */ #define SCTPCTL_MAX_RETRAN_CHUNK_DESC "Maximum times an unlucky chunk can be retran'd before assoc abort" #define SCTPCTL_MAX_RETRAN_CHUNK_MIN 0 #define SCTPCTL_MAX_RETRAN_CHUNK_MAX 65535 #define SCTPCTL_MAX_RETRAN_CHUNK_DEFAULT 30 /* sctp_logging: This gives us logging when the options are enabled */ #define SCTPCTL_LOGGING_LEVEL_DESC "Ltrace/KTR trace logging level" #define SCTPCTL_LOGGING_LEVEL_MIN 0 #define SCTPCTL_LOGGING_LEVEL_MAX 0xffffffff #define SCTPCTL_LOGGING_LEVEL_DEFAULT 0 /* JRS - default congestion control module sysctl */ #define SCTPCTL_DEFAULT_CC_MODULE_DESC "Default congestion control module" #define SCTPCTL_DEFAULT_CC_MODULE_MIN 0 #define SCTPCTL_DEFAULT_CC_MODULE_MAX 2 #define SCTPCTL_DEFAULT_CC_MODULE_DEFAULT 0 /* RS - default stream scheduling module sysctl */ #define SCTPCTL_DEFAULT_SS_MODULE_DESC "Default stream scheduling module" #define SCTPCTL_DEFAULT_SS_MODULE_MIN 0 #define SCTPCTL_DEFAULT_SS_MODULE_MAX 5 #define SCTPCTL_DEFAULT_SS_MODULE_DEFAULT 0 /* RRS - default fragment interleave */ #define SCTPCTL_DEFAULT_FRAG_INTERLEAVE_DESC "Default fragment interleave level" #define SCTPCTL_DEFAULT_FRAG_INTERLEAVE_MIN 0 #define SCTPCTL_DEFAULT_FRAG_INTERLEAVE_MAX 2 #define SCTPCTL_DEFAULT_FRAG_INTERLEAVE_DEFAULT 1 /* mobility_base: Enable SCTP mobility support */ #define SCTPCTL_MOBILITY_BASE_DESC "Enable SCTP base mobility" #define SCTPCTL_MOBILITY_BASE_MIN 0 #define SCTPCTL_MOBILITY_BASE_MAX 1 #define SCTPCTL_MOBILITY_BASE_DEFAULT 0 /* mobility_fasthandoff: Enable SCTP fast handoff support */ #define SCTPCTL_MOBILITY_FASTHANDOFF_DESC "Enable SCTP fast handoff" #define SCTPCTL_MOBILITY_FASTHANDOFF_MIN 0 #define SCTPCTL_MOBILITY_FASTHANDOFF_MAX 1 #define SCTPCTL_MOBILITY_FASTHANDOFF_DEFAULT 0 /* Enable SCTP/UDP tunneling port */ #define SCTPCTL_UDP_TUNNELING_PORT_DESC "Set the SCTP/UDP tunneling port" #define SCTPCTL_UDP_TUNNELING_PORT_MIN 0 #define SCTPCTL_UDP_TUNNELING_PORT_MAX 65535 #define SCTPCTL_UDP_TUNNELING_PORT_DEFAULT 0 /* Enable sending of the SACK-IMMEDIATELY bit */ #define SCTPCTL_SACK_IMMEDIATELY_ENABLE_DESC "Enable sending of the SACK-IMMEDIATELY-bit." #define SCTPCTL_SACK_IMMEDIATELY_ENABLE_MIN 0 #define SCTPCTL_SACK_IMMEDIATELY_ENABLE_MAX 1 #define SCTPCTL_SACK_IMMEDIATELY_ENABLE_DEFAULT SCTPCTL_SACK_IMMEDIATELY_ENABLE_MIN /* Enable sending of the NAT-FRIENDLY message */ #define SCTPCTL_NAT_FRIENDLY_INITS_DESC "Enable sending of the nat-friendly SCTP option on INITs." #define SCTPCTL_NAT_FRIENDLY_INITS_MIN 0 #define SCTPCTL_NAT_FRIENDLY_INITS_MAX 1 #define SCTPCTL_NAT_FRIENDLY_INITS_DEFAULT SCTPCTL_NAT_FRIENDLY_INITS_MIN /* Vtag time wait in seconds */ #define SCTPCTL_TIME_WAIT_DESC "Vtag time wait time in seconds, 0 disables it." #define SCTPCTL_TIME_WAIT_MIN 0 #define SCTPCTL_TIME_WAIT_MAX 0xffffffff #define SCTPCTL_TIME_WAIT_DEFAULT SCTP_TIME_WAIT /* Enable Send/Receive buffer splitting */ #define SCTPCTL_BUFFER_SPLITTING_DESC "Enable send/receive buffer splitting." #define SCTPCTL_BUFFER_SPLITTING_MIN 0 #define SCTPCTL_BUFFER_SPLITTING_MAX 0x3 #define SCTPCTL_BUFFER_SPLITTING_DEFAULT SCTPCTL_BUFFER_SPLITTING_MIN /* Initial congestion window in MTU */ #define SCTPCTL_INITIAL_CWND_DESC "Initial congestion window in MTUs" #define SCTPCTL_INITIAL_CWND_MIN 0 #define SCTPCTL_INITIAL_CWND_MAX 0xffffffff #define SCTPCTL_INITIAL_CWND_DEFAULT 3 /* rttvar smooth avg for bw calc */ #define SCTPCTL_RTTVAR_BW_DESC "Shift amount for bw smoothing on rtt calc" #define SCTPCTL_RTTVAR_BW_MIN 0 #define SCTPCTL_RTTVAR_BW_MAX 32 #define SCTPCTL_RTTVAR_BW_DEFAULT 4 /* rttvar smooth avg for bw calc */ #define SCTPCTL_RTTVAR_RTT_DESC "Shift amount for rtt smoothing on rtt calc" #define SCTPCTL_RTTVAR_RTT_MIN 0 #define SCTPCTL_RTTVAR_RTT_MAX 32 #define SCTPCTL_RTTVAR_RTT_DEFAULT 5 #define SCTPCTL_RTTVAR_EQRET_DESC "What to return when rtt and bw are unchanged" #define SCTPCTL_RTTVAR_EQRET_MIN 0 #define SCTPCTL_RTTVAR_EQRET_MAX 1 #define SCTPCTL_RTTVAR_EQRET_DEFAULT 0 #define SCTPCTL_RTTVAR_STEADYS_DESC "How many the sames it takes to try step down of cwnd" #define SCTPCTL_RTTVAR_STEADYS_MIN 0 #define SCTPCTL_RTTVAR_STEADYS_MAX 0xFFFF #define SCTPCTL_RTTVAR_STEADYS_DEFAULT 20 /* 0 means disable feature */ #define SCTPCTL_RTTVAR_DCCCECN_DESC "Enable for RTCC CC datacenter ECN" #define SCTPCTL_RTTVAR_DCCCECN_MIN 0 #define SCTPCTL_RTTVAR_DCCCECN_MAX 1 #define SCTPCTL_RTTVAR_DCCCECN_DEFAULT 1 /* 0 means disable feature */ #define SCTPCTL_BLACKHOLE_DESC "Enable SCTP blackholing. See blackhole(4) for more details." #define SCTPCTL_BLACKHOLE_MIN 0 #define SCTPCTL_BLACKHOLE_MAX 2 #define SCTPCTL_BLACKHOLE_DEFAULT SCTPCTL_BLACKHOLE_MIN #define SCTPCTL_DIAG_INFO_CODE_DESC "Diagnostic information error cause code" #define SCTPCTL_DIAG_INFO_CODE_MIN 0 #define SCTPCTL_DIAG_INFO_CODE_MAX 65535 #define SCTPCTL_DIAG_INFO_CODE_DEFAULT 0 #if defined(SCTP_DEBUG) /* debug: Configure debug output */ #define SCTPCTL_DEBUG_DESC "Configure debug output" #define SCTPCTL_DEBUG_MIN 0 #define SCTPCTL_DEBUG_MAX 0xFFFFFFFF #define SCTPCTL_DEBUG_DEFAULT 0 #endif #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) #define SCTPCTL_OUTPUT_UNLOCKED_DESC "Unlock socket when sending packets down to IP." #define SCTPCTL_OUTPUT_UNLOCKED_MIN 0 #define SCTPCTL_OUTPUT_UNLOCKED_MAX 1 #define SCTPCTL_OUTPUT_UNLOCKED_DEFAULT SCTPCTL_OUTPUT_UNLOCKED_MIN #endif #if defined(_KERNEL) || defined(__Userspace__) #if defined(SYSCTL_DECL) SYSCTL_DECL(_net_inet_sctp); #endif void sctp_init_sysctls(void); #endif /* _KERNEL */ #endif /* __sctp_sysctl_h__ */ Index: head/sys/netinet/sctp_uio.h =================================================================== --- head/sys/netinet/sctp_uio.h (revision 297661) +++ head/sys/netinet/sctp_uio.h (revision 297662) @@ -1,1341 +1,1342 @@ /*- * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * a) Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * b) Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the distribution. * * c) Neither the name of Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #ifndef _NETINET_SCTP_UIO_H_ #define _NETINET_SCTP_UIO_H_ #if ! defined(_KERNEL) #include #endif #include #include #include typedef uint32_t sctp_assoc_t; #define SCTP_FUTURE_ASSOC 0 #define SCTP_CURRENT_ASSOC 1 #define SCTP_ALL_ASSOC 2 struct sctp_event { sctp_assoc_t se_assoc_id; uint16_t se_type; uint8_t se_on; }; /* Compatibility to previous define's */ #define sctp_stream_reset_events sctp_stream_reset_event /* On/Off setup for subscription to events */ struct sctp_event_subscribe { uint8_t sctp_data_io_event; uint8_t sctp_association_event; uint8_t sctp_address_event; uint8_t sctp_send_failure_event; uint8_t sctp_peer_error_event; uint8_t sctp_shutdown_event; uint8_t sctp_partial_delivery_event; uint8_t sctp_adaptation_layer_event; uint8_t sctp_authentication_event; uint8_t sctp_sender_dry_event; uint8_t sctp_stream_reset_event; }; /* ancillary data types */ #define SCTP_INIT 0x0001 #define SCTP_SNDRCV 0x0002 #define SCTP_EXTRCV 0x0003 #define SCTP_SNDINFO 0x0004 #define SCTP_RCVINFO 0x0005 #define SCTP_NXTINFO 0x0006 #define SCTP_PRINFO 0x0007 #define SCTP_AUTHINFO 0x0008 #define SCTP_DSTADDRV4 0x0009 #define SCTP_DSTADDRV6 0x000a /* * ancillary data structures */ struct sctp_initmsg { uint16_t sinit_num_ostreams; uint16_t sinit_max_instreams; uint16_t sinit_max_attempts; uint16_t sinit_max_init_timeo; }; /* We add 96 bytes to the size of sctp_sndrcvinfo. * This makes the current structure 128 bytes long * which is nicely 64 bit aligned but also has room * for us to add more and keep ABI compatibility. * For example, already we have the sctp_extrcvinfo * when enabled which is 48 bytes. */ /* * The assoc up needs a verfid * all sendrcvinfo's need a verfid for SENDING only. */ #define SCTP_ALIGN_RESV_PAD 92 #define SCTP_ALIGN_RESV_PAD_SHORT 76 struct sctp_sndrcvinfo { uint16_t sinfo_stream; uint16_t sinfo_ssn; uint16_t sinfo_flags; uint32_t sinfo_ppid; uint32_t sinfo_context; uint32_t sinfo_timetolive; uint32_t sinfo_tsn; uint32_t sinfo_cumtsn; sctp_assoc_t sinfo_assoc_id; uint16_t sinfo_keynumber; uint16_t sinfo_keynumber_valid; uint8_t __reserve_pad[SCTP_ALIGN_RESV_PAD]; }; struct sctp_extrcvinfo { uint16_t sinfo_stream; uint16_t sinfo_ssn; uint16_t sinfo_flags; uint32_t sinfo_ppid; uint32_t sinfo_context; uint32_t sinfo_timetolive; /* should have been sinfo_pr_value */ uint32_t sinfo_tsn; uint32_t sinfo_cumtsn; sctp_assoc_t sinfo_assoc_id; uint16_t serinfo_next_flags; uint16_t serinfo_next_stream; uint32_t serinfo_next_aid; uint32_t serinfo_next_length; uint32_t serinfo_next_ppid; uint16_t sinfo_keynumber; uint16_t sinfo_keynumber_valid; uint8_t __reserve_pad[SCTP_ALIGN_RESV_PAD_SHORT]; }; #define sinfo_pr_value sinfo_timetolive #define sreinfo_next_flags serinfo_next_flags #define sreinfo_next_stream serinfo_next_stream #define sreinfo_next_aid serinfo_next_aid #define sreinfo_next_length serinfo_next_length #define sreinfo_next_ppid serinfo_next_ppid struct sctp_sndinfo { uint16_t snd_sid; uint16_t snd_flags; uint32_t snd_ppid; uint32_t snd_context; sctp_assoc_t snd_assoc_id; }; struct sctp_prinfo { uint16_t pr_policy; uint32_t pr_value; }; struct sctp_default_prinfo { uint16_t pr_policy; uint32_t pr_value; sctp_assoc_t pr_assoc_id; }; struct sctp_authinfo { uint16_t auth_keynumber; }; struct sctp_rcvinfo { uint16_t rcv_sid; uint16_t rcv_ssn; uint16_t rcv_flags; uint32_t rcv_ppid; uint32_t rcv_tsn; uint32_t rcv_cumtsn; uint32_t rcv_context; sctp_assoc_t rcv_assoc_id; }; struct sctp_nxtinfo { uint16_t nxt_sid; uint16_t nxt_flags; uint32_t nxt_ppid; uint32_t nxt_length; sctp_assoc_t nxt_assoc_id; }; #define SCTP_NO_NEXT_MSG 0x0000 #define SCTP_NEXT_MSG_AVAIL 0x0001 #define SCTP_NEXT_MSG_ISCOMPLETE 0x0002 #define SCTP_NEXT_MSG_IS_UNORDERED 0x0004 #define SCTP_NEXT_MSG_IS_NOTIFICATION 0x0008 struct sctp_recvv_rn { struct sctp_rcvinfo recvv_rcvinfo; struct sctp_nxtinfo recvv_nxtinfo; }; #define SCTP_RECVV_NOINFO 0 #define SCTP_RECVV_RCVINFO 1 #define SCTP_RECVV_NXTINFO 2 #define SCTP_RECVV_RN 3 #define SCTP_SENDV_NOINFO 0 #define SCTP_SENDV_SNDINFO 1 #define SCTP_SENDV_PRINFO 2 #define SCTP_SENDV_AUTHINFO 3 #define SCTP_SENDV_SPA 4 struct sctp_sendv_spa { uint32_t sendv_flags; struct sctp_sndinfo sendv_sndinfo; struct sctp_prinfo sendv_prinfo; struct sctp_authinfo sendv_authinfo; }; #define SCTP_SEND_SNDINFO_VALID 0x00000001 #define SCTP_SEND_PRINFO_VALID 0x00000002 #define SCTP_SEND_AUTHINFO_VALID 0x00000004 struct sctp_snd_all_completes { uint16_t sall_stream; uint16_t sall_flags; uint32_t sall_ppid; uint32_t sall_context; uint32_t sall_num_sent; uint32_t sall_num_failed; }; /* Flags that go into the sinfo->sinfo_flags field */ #define SCTP_NOTIFICATION 0x0010 /* next message is a notification */ #define SCTP_COMPLETE 0x0020 /* next message is complete */ #define SCTP_EOF 0x0100 /* Start shutdown procedures */ #define SCTP_ABORT 0x0200 /* Send an ABORT to peer */ #define SCTP_UNORDERED 0x0400 /* Message is un-ordered */ #define SCTP_ADDR_OVER 0x0800 /* Override the primary-address */ #define SCTP_SENDALL 0x1000 /* Send this on all associations */ #define SCTP_EOR 0x2000 /* end of message signal */ #define SCTP_SACK_IMMEDIATELY 0x4000 /* Set I-Bit */ #define INVALID_SINFO_FLAG(x) (((x) & 0xfffffff0 \ & ~(SCTP_EOF | SCTP_ABORT | SCTP_UNORDERED |\ SCTP_ADDR_OVER | SCTP_SENDALL | SCTP_EOR |\ SCTP_SACK_IMMEDIATELY)) != 0) /* for the endpoint */ /* The lower four bits is an enumeration of PR-SCTP policies */ #define SCTP_PR_SCTP_NONE 0x0000/* Reliable transfer */ #define SCTP_PR_SCTP_TTL 0x0001/* Time based PR-SCTP */ #define SCTP_PR_SCTP_BUF 0x0002/* Buffer based PR-SCTP */ #define SCTP_PR_SCTP_RTX 0x0003/* Number of retransmissions based PR-SCTP */ #define SCTP_PR_SCTP_MAX SCTP_PR_SCTP_RTX #define SCTP_PR_SCTP_ALL 0x000f/* Used for aggregated stats */ #define PR_SCTP_POLICY(x) ((x) & 0x0f) #define PR_SCTP_ENABLED(x) ((PR_SCTP_POLICY(x) != SCTP_PR_SCTP_NONE) && \ (PR_SCTP_POLICY(x) != SCTP_PR_SCTP_ALL)) #define PR_SCTP_TTL_ENABLED(x) (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_TTL) #define PR_SCTP_BUF_ENABLED(x) (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_BUF) #define PR_SCTP_RTX_ENABLED(x) (PR_SCTP_POLICY(x) == SCTP_PR_SCTP_RTX) #define PR_SCTP_INVALID_POLICY(x) (PR_SCTP_POLICY(x) > SCTP_PR_SCTP_MAX) #define PR_SCTP_VALID_POLICY(x) (PR_SCTP_POLICY(x) <= SCTP_PR_SCTP_MAX) /* Stat's */ struct sctp_pcbinfo { uint32_t ep_count; uint32_t asoc_count; uint32_t laddr_count; uint32_t raddr_count; uint32_t chk_count; uint32_t readq_count; uint32_t free_chunks; uint32_t stream_oque; }; struct sctp_sockstat { sctp_assoc_t ss_assoc_id; uint32_t ss_total_sndbuf; uint32_t ss_total_recv_buf; }; /* * notification event structures */ /* * association change event */ struct sctp_assoc_change { uint16_t sac_type; uint16_t sac_flags; uint32_t sac_length; uint16_t sac_state; uint16_t sac_error; uint16_t sac_outbound_streams; uint16_t sac_inbound_streams; sctp_assoc_t sac_assoc_id; uint8_t sac_info[]; }; /* sac_state values */ #define SCTP_COMM_UP 0x0001 #define SCTP_COMM_LOST 0x0002 #define SCTP_RESTART 0x0003 #define SCTP_SHUTDOWN_COMP 0x0004 #define SCTP_CANT_STR_ASSOC 0x0005 /* sac_info values */ -#define SCTP_ASSOC_SUPPORTS_PR 0x01 -#define SCTP_ASSOC_SUPPORTS_AUTH 0x02 -#define SCTP_ASSOC_SUPPORTS_ASCONF 0x03 -#define SCTP_ASSOC_SUPPORTS_MULTIBUF 0x04 -#define SCTP_ASSOC_SUPPORTS_RE_CONFIG 0x05 -#define SCTP_ASSOC_SUPPORTS_MAX 0x05 +#define SCTP_ASSOC_SUPPORTS_PR 0x01 +#define SCTP_ASSOC_SUPPORTS_AUTH 0x02 +#define SCTP_ASSOC_SUPPORTS_ASCONF 0x03 +#define SCTP_ASSOC_SUPPORTS_MULTIBUF 0x04 +#define SCTP_ASSOC_SUPPORTS_RE_CONFIG 0x05 +#define SCTP_ASSOC_SUPPORTS_INTERLEAVING 0x06 +#define SCTP_ASSOC_SUPPORTS_MAX 0x06 /* * Address event */ struct sctp_paddr_change { uint16_t spc_type; uint16_t spc_flags; uint32_t spc_length; struct sockaddr_storage spc_aaddr; uint32_t spc_state; uint32_t spc_error; sctp_assoc_t spc_assoc_id; }; /* paddr state values */ #define SCTP_ADDR_AVAILABLE 0x0001 #define SCTP_ADDR_UNREACHABLE 0x0002 #define SCTP_ADDR_REMOVED 0x0003 #define SCTP_ADDR_ADDED 0x0004 #define SCTP_ADDR_MADE_PRIM 0x0005 #define SCTP_ADDR_CONFIRMED 0x0006 #define SCTP_ACTIVE 0x0001 /* SCTP_ADDR_REACHABLE */ #define SCTP_INACTIVE 0x0002 /* neither SCTP_ADDR_REACHABLE nor * SCTP_ADDR_UNCONFIRMED */ #define SCTP_UNCONFIRMED 0x0200 /* SCTP_ADDR_UNCONFIRMED */ /* remote error events */ struct sctp_remote_error { uint16_t sre_type; uint16_t sre_flags; uint32_t sre_length; uint16_t sre_error; sctp_assoc_t sre_assoc_id; uint8_t sre_data[]; }; /* data send failure event (deprecated) */ struct sctp_send_failed { uint16_t ssf_type; uint16_t ssf_flags; uint32_t ssf_length; uint32_t ssf_error; struct sctp_sndrcvinfo ssf_info; sctp_assoc_t ssf_assoc_id; uint8_t ssf_data[]; }; /* data send failure event (not deprecated) */ struct sctp_send_failed_event { uint16_t ssfe_type; uint16_t ssfe_flags; uint32_t ssfe_length; uint32_t ssfe_error; struct sctp_sndinfo ssfe_info; sctp_assoc_t ssfe_assoc_id; uint8_t ssfe_data[]; }; /* flag that indicates state of data */ #define SCTP_DATA_UNSENT 0x0001 /* inqueue never on wire */ #define SCTP_DATA_SENT 0x0002 /* on wire at failure */ /* shutdown event */ struct sctp_shutdown_event { uint16_t sse_type; uint16_t sse_flags; uint32_t sse_length; sctp_assoc_t sse_assoc_id; }; /* Adaptation layer indication stuff */ struct sctp_adaptation_event { uint16_t sai_type; uint16_t sai_flags; uint32_t sai_length; uint32_t sai_adaptation_ind; sctp_assoc_t sai_assoc_id; }; struct sctp_setadaptation { uint32_t ssb_adaptation_ind; }; /* compatible old spelling */ struct sctp_adaption_event { uint16_t sai_type; uint16_t sai_flags; uint32_t sai_length; uint32_t sai_adaption_ind; sctp_assoc_t sai_assoc_id; }; struct sctp_setadaption { uint32_t ssb_adaption_ind; }; /* * Partial Delivery API event */ struct sctp_pdapi_event { uint16_t pdapi_type; uint16_t pdapi_flags; uint32_t pdapi_length; uint32_t pdapi_indication; uint16_t pdapi_stream; uint16_t pdapi_seq; sctp_assoc_t pdapi_assoc_id; }; /* indication values */ #define SCTP_PARTIAL_DELIVERY_ABORTED 0x0001 /* * authentication key event */ struct sctp_authkey_event { uint16_t auth_type; uint16_t auth_flags; uint32_t auth_length; uint16_t auth_keynumber; uint16_t auth_altkeynumber; uint32_t auth_indication; sctp_assoc_t auth_assoc_id; }; /* indication values */ #define SCTP_AUTH_NEW_KEY 0x0001 #define SCTP_AUTH_NEWKEY SCTP_AUTH_NEW_KEY #define SCTP_AUTH_NO_AUTH 0x0002 #define SCTP_AUTH_FREE_KEY 0x0003 struct sctp_sender_dry_event { uint16_t sender_dry_type; uint16_t sender_dry_flags; uint32_t sender_dry_length; sctp_assoc_t sender_dry_assoc_id; }; /* * Stream reset event - subscribe to SCTP_STREAM_RESET_EVENT */ struct sctp_stream_reset_event { uint16_t strreset_type; uint16_t strreset_flags; uint32_t strreset_length; sctp_assoc_t strreset_assoc_id; uint16_t strreset_stream_list[]; }; /* flags in stream_reset_event (strreset_flags) */ #define SCTP_STREAM_RESET_INCOMING_SSN 0x0001 #define SCTP_STREAM_RESET_OUTGOING_SSN 0x0002 #define SCTP_STREAM_RESET_DENIED 0x0004 #define SCTP_STREAM_RESET_FAILED 0x0008 /* * Assoc reset event - subscribe to SCTP_ASSOC_RESET_EVENT */ struct sctp_assoc_reset_event { uint16_t assocreset_type; uint16_t assocreset_flags; uint32_t assocreset_length; sctp_assoc_t assocreset_assoc_id; uint32_t assocreset_local_tsn; uint32_t assocreset_remote_tsn; }; #define SCTP_ASSOC_RESET_DENIED 0x0004 #define SCTP_ASSOC_RESET_FAILED 0x0008 /* * Stream change event - subscribe to SCTP_STREAM_CHANGE_EVENT */ struct sctp_stream_change_event { uint16_t strchange_type; uint16_t strchange_flags; uint32_t strchange_length; sctp_assoc_t strchange_assoc_id; uint16_t strchange_instrms; uint16_t strchange_outstrms; }; #define SCTP_STREAM_CHANGE_DENIED 0x0004 #define SCTP_STREAM_CHANGE_FAILED 0x0008 /* SCTP notification event */ struct sctp_tlv { uint16_t sn_type; uint16_t sn_flags; uint32_t sn_length; }; union sctp_notification { struct sctp_tlv sn_header; struct sctp_assoc_change sn_assoc_change; struct sctp_paddr_change sn_paddr_change; struct sctp_remote_error sn_remote_error; struct sctp_send_failed sn_send_failed; struct sctp_shutdown_event sn_shutdown_event; struct sctp_adaptation_event sn_adaptation_event; /* compatibility same as above */ struct sctp_adaption_event sn_adaption_event; struct sctp_pdapi_event sn_pdapi_event; struct sctp_authkey_event sn_auth_event; struct sctp_sender_dry_event sn_sender_dry_event; struct sctp_send_failed_event sn_send_failed_event; struct sctp_stream_reset_event sn_strreset_event; struct sctp_assoc_reset_event sn_assocreset_event; struct sctp_stream_change_event sn_strchange_event; }; /* notification types */ #define SCTP_ASSOC_CHANGE 0x0001 #define SCTP_PEER_ADDR_CHANGE 0x0002 #define SCTP_REMOTE_ERROR 0x0003 #define SCTP_SEND_FAILED 0x0004 #define SCTP_SHUTDOWN_EVENT 0x0005 #define SCTP_ADAPTATION_INDICATION 0x0006 /* same as above */ #define SCTP_ADAPTION_INDICATION 0x0006 #define SCTP_PARTIAL_DELIVERY_EVENT 0x0007 #define SCTP_AUTHENTICATION_EVENT 0x0008 #define SCTP_STREAM_RESET_EVENT 0x0009 #define SCTP_SENDER_DRY_EVENT 0x000a #define SCTP_NOTIFICATIONS_STOPPED_EVENT 0x000b /* we don't send this */ #define SCTP_ASSOC_RESET_EVENT 0x000c #define SCTP_STREAM_CHANGE_EVENT 0x000d #define SCTP_SEND_FAILED_EVENT 0x000e /* * socket option structs */ struct sctp_paddrparams { struct sockaddr_storage spp_address; sctp_assoc_t spp_assoc_id; uint32_t spp_hbinterval; uint32_t spp_pathmtu; uint32_t spp_flags; uint32_t spp_ipv6_flowlabel; uint16_t spp_pathmaxrxt; uint8_t spp_dscp; }; #define spp_ipv4_tos spp_dscp #define SPP_HB_ENABLE 0x00000001 #define SPP_HB_DISABLE 0x00000002 #define SPP_HB_DEMAND 0x00000004 #define SPP_PMTUD_ENABLE 0x00000008 #define SPP_PMTUD_DISABLE 0x00000010 #define SPP_HB_TIME_IS_ZERO 0x00000080 #define SPP_IPV6_FLOWLABEL 0x00000100 #define SPP_DSCP 0x00000200 #define SPP_IPV4_TOS SPP_DSCP struct sctp_paddrthlds { struct sockaddr_storage spt_address; sctp_assoc_t spt_assoc_id; uint16_t spt_pathmaxrxt; uint16_t spt_pathpfthld; }; struct sctp_paddrinfo { struct sockaddr_storage spinfo_address; sctp_assoc_t spinfo_assoc_id; int32_t spinfo_state; uint32_t spinfo_cwnd; uint32_t spinfo_srtt; uint32_t spinfo_rto; uint32_t spinfo_mtu; }; struct sctp_rtoinfo { sctp_assoc_t srto_assoc_id; uint32_t srto_initial; uint32_t srto_max; uint32_t srto_min; }; struct sctp_assocparams { sctp_assoc_t sasoc_assoc_id; uint32_t sasoc_peer_rwnd; uint32_t sasoc_local_rwnd; uint32_t sasoc_cookie_life; uint16_t sasoc_asocmaxrxt; uint16_t sasoc_number_peer_destinations; }; struct sctp_setprim { struct sockaddr_storage ssp_addr; sctp_assoc_t ssp_assoc_id; uint8_t ssp_padding[4]; }; struct sctp_setpeerprim { struct sockaddr_storage sspp_addr; sctp_assoc_t sspp_assoc_id; uint8_t sspp_padding[4]; }; struct sctp_getaddresses { sctp_assoc_t sget_assoc_id; /* addr is filled in for N * sockaddr_storage */ struct sockaddr addr[1]; }; struct sctp_status { sctp_assoc_t sstat_assoc_id; int32_t sstat_state; uint32_t sstat_rwnd; uint16_t sstat_unackdata; uint16_t sstat_penddata; uint16_t sstat_instrms; uint16_t sstat_outstrms; uint32_t sstat_fragmentation_point; struct sctp_paddrinfo sstat_primary; }; /* * AUTHENTICATION support */ /* SCTP_AUTH_CHUNK */ struct sctp_authchunk { uint8_t sauth_chunk; }; /* SCTP_AUTH_KEY */ struct sctp_authkey { sctp_assoc_t sca_assoc_id; uint16_t sca_keynumber; uint16_t sca_keylength; uint8_t sca_key[]; }; /* SCTP_HMAC_IDENT */ struct sctp_hmacalgo { uint32_t shmac_number_of_idents; uint16_t shmac_idents[]; }; /* AUTH hmac_id */ #define SCTP_AUTH_HMAC_ID_RSVD 0x0000 #define SCTP_AUTH_HMAC_ID_SHA1 0x0001 /* default, mandatory */ #define SCTP_AUTH_HMAC_ID_SHA256 0x0003 /* SCTP_AUTH_ACTIVE_KEY / SCTP_AUTH_DELETE_KEY */ struct sctp_authkeyid { sctp_assoc_t scact_assoc_id; uint16_t scact_keynumber; }; /* SCTP_PEER_AUTH_CHUNKS / SCTP_LOCAL_AUTH_CHUNKS */ struct sctp_authchunks { sctp_assoc_t gauth_assoc_id; uint32_t gauth_number_of_chunks; uint8_t gauth_chunks[]; }; struct sctp_assoc_value { sctp_assoc_t assoc_id; uint32_t assoc_value; }; struct sctp_cc_option { int option; struct sctp_assoc_value aid_value; }; struct sctp_stream_value { sctp_assoc_t assoc_id; uint16_t stream_id; uint16_t stream_value; }; struct sctp_assoc_ids { uint32_t gaids_number_of_ids; sctp_assoc_t gaids_assoc_id[]; }; struct sctp_sack_info { sctp_assoc_t sack_assoc_id; uint32_t sack_delay; uint32_t sack_freq; }; struct sctp_timeouts { sctp_assoc_t stimo_assoc_id; uint32_t stimo_init; uint32_t stimo_data; uint32_t stimo_sack; uint32_t stimo_shutdown; uint32_t stimo_heartbeat; uint32_t stimo_cookie; uint32_t stimo_shutdownack; }; struct sctp_udpencaps { struct sockaddr_storage sue_address; sctp_assoc_t sue_assoc_id; uint16_t sue_port; }; struct sctp_prstatus { sctp_assoc_t sprstat_assoc_id; uint16_t sprstat_sid; uint16_t sprstat_policy; uint64_t sprstat_abandoned_unsent; uint64_t sprstat_abandoned_sent; }; struct sctp_cwnd_args { struct sctp_nets *net; /* network to *//* FIXME: LP64 issue */ uint32_t cwnd_new_value;/* cwnd in k */ uint32_t pseudo_cumack; uint16_t inflight; /* flightsize in k */ uint16_t cwnd_augment; /* increment to it */ uint8_t meets_pseudo_cumack; uint8_t need_new_pseudo_cumack; uint8_t cnt_in_send; uint8_t cnt_in_str; }; struct sctp_blk_args { uint32_t onsb; /* in 1k bytes */ uint32_t sndlen; /* len of send being attempted */ uint32_t peer_rwnd; /* rwnd of peer */ uint16_t send_sent_qcnt;/* chnk cnt */ uint16_t stream_qcnt; /* chnk cnt */ uint16_t chunks_on_oque;/* chunks out */ uint16_t flight_size; /* flight size in k */ }; /* * Max we can reset in one setting, note this is dictated not by the define * but the size of a mbuf cluster so don't change this define and think you * can specify more. You must do multiple resets if you want to reset more * than SCTP_MAX_EXPLICIT_STR_RESET. */ #define SCTP_MAX_EXPLICT_STR_RESET 1000 struct sctp_reset_streams { sctp_assoc_t srs_assoc_id; uint16_t srs_flags; uint16_t srs_number_streams; /* 0 == ALL */ uint16_t srs_stream_list[]; /* list if strrst_num_streams is not 0 */ }; struct sctp_add_streams { sctp_assoc_t sas_assoc_id; uint16_t sas_instrms; uint16_t sas_outstrms; }; struct sctp_get_nonce_values { sctp_assoc_t gn_assoc_id; uint32_t gn_peers_tag; uint32_t gn_local_tag; }; /* Debugging logs */ struct sctp_str_log { void *stcb; /* FIXME: LP64 issue */ uint32_t n_tsn; uint32_t e_tsn; uint16_t n_sseq; uint16_t e_sseq; uint16_t strm; }; struct sctp_sb_log { void *stcb; /* FIXME: LP64 issue */ uint32_t so_sbcc; uint32_t stcb_sbcc; uint32_t incr; }; struct sctp_fr_log { uint32_t largest_tsn; uint32_t largest_new_tsn; uint32_t tsn; }; struct sctp_fr_map { uint32_t base; uint32_t cum; uint32_t high; }; struct sctp_rwnd_log { uint32_t rwnd; uint32_t send_size; uint32_t overhead; uint32_t new_rwnd; }; struct sctp_mbcnt_log { uint32_t total_queue_size; uint32_t size_change; uint32_t total_queue_mb_size; uint32_t mbcnt_change; }; struct sctp_sack_log { uint32_t cumack; uint32_t oldcumack; uint32_t tsn; uint16_t numGaps; uint16_t numDups; }; struct sctp_lock_log { void *sock; /* FIXME: LP64 issue */ void *inp; /* FIXME: LP64 issue */ uint8_t tcb_lock; uint8_t inp_lock; uint8_t info_lock; uint8_t sock_lock; uint8_t sockrcvbuf_lock; uint8_t socksndbuf_lock; uint8_t create_lock; uint8_t resv; }; struct sctp_rto_log { void *net; /* FIXME: LP64 issue */ uint32_t rtt; }; struct sctp_nagle_log { void *stcb; /* FIXME: LP64 issue */ uint32_t total_flight; uint32_t total_in_queue; uint16_t count_in_queue; uint16_t count_in_flight; }; struct sctp_sbwake_log { void *stcb; /* FIXME: LP64 issue */ uint16_t send_q; uint16_t sent_q; uint16_t flight; uint16_t wake_cnt; uint8_t stream_qcnt; /* chnk cnt */ uint8_t chunks_on_oque; /* chunks out */ uint8_t sbflags; uint8_t sctpflags; }; struct sctp_misc_info { uint32_t log1; uint32_t log2; uint32_t log3; uint32_t log4; }; struct sctp_log_closing { void *inp; /* FIXME: LP64 issue */ void *stcb; /* FIXME: LP64 issue */ uint32_t sctp_flags; uint16_t state; int16_t loc; }; struct sctp_mbuf_log { struct mbuf *mp; /* FIXME: LP64 issue */ caddr_t ext; caddr_t data; uint16_t size; uint8_t refcnt; uint8_t mbuf_flags; }; struct sctp_cwnd_log { uint64_t time_event; uint8_t from; uint8_t event_type; uint8_t resv[2]; union { struct sctp_log_closing close; struct sctp_blk_args blk; struct sctp_cwnd_args cwnd; struct sctp_str_log strlog; struct sctp_fr_log fr; struct sctp_fr_map map; struct sctp_rwnd_log rwnd; struct sctp_mbcnt_log mbcnt; struct sctp_sack_log sack; struct sctp_lock_log lock; struct sctp_rto_log rto; struct sctp_sb_log sb; struct sctp_nagle_log nagle; struct sctp_sbwake_log wake; struct sctp_mbuf_log mb; struct sctp_misc_info misc; } x; }; struct sctp_cwnd_log_req { int32_t num_in_log; /* Number in log */ int32_t num_ret; /* Number returned */ int32_t start_at; /* start at this one */ int32_t end_at; /* end at this one */ struct sctp_cwnd_log log[]; }; struct sctp_timeval { uint32_t tv_sec; uint32_t tv_usec; }; struct sctpstat { struct sctp_timeval sctps_discontinuitytime; /* sctpStats 18 * (TimeStamp) */ /* MIB according to RFC 3873 */ uint32_t sctps_currestab; /* sctpStats 1 (Gauge32) */ uint32_t sctps_activeestab; /* sctpStats 2 (Counter32) */ uint32_t sctps_restartestab; uint32_t sctps_collisionestab; uint32_t sctps_passiveestab; /* sctpStats 3 (Counter32) */ uint32_t sctps_aborted; /* sctpStats 4 (Counter32) */ uint32_t sctps_shutdown;/* sctpStats 5 (Counter32) */ uint32_t sctps_outoftheblue; /* sctpStats 6 (Counter32) */ uint32_t sctps_checksumerrors; /* sctpStats 7 (Counter32) */ uint32_t sctps_outcontrolchunks; /* sctpStats 8 (Counter64) */ uint32_t sctps_outorderchunks; /* sctpStats 9 (Counter64) */ uint32_t sctps_outunorderchunks; /* sctpStats 10 (Counter64) */ uint32_t sctps_incontrolchunks; /* sctpStats 11 (Counter64) */ uint32_t sctps_inorderchunks; /* sctpStats 12 (Counter64) */ uint32_t sctps_inunorderchunks; /* sctpStats 13 (Counter64) */ uint32_t sctps_fragusrmsgs; /* sctpStats 14 (Counter64) */ uint32_t sctps_reasmusrmsgs; /* sctpStats 15 (Counter64) */ uint32_t sctps_outpackets; /* sctpStats 16 (Counter64) */ uint32_t sctps_inpackets; /* sctpStats 17 (Counter64) */ /* input statistics: */ uint32_t sctps_recvpackets; /* total input packets */ uint32_t sctps_recvdatagrams; /* total input datagrams */ uint32_t sctps_recvpktwithdata; /* total packets that had data */ uint32_t sctps_recvsacks; /* total input SACK chunks */ uint32_t sctps_recvdata;/* total input DATA chunks */ uint32_t sctps_recvdupdata; /* total input duplicate DATA chunks */ uint32_t sctps_recvheartbeat; /* total input HB chunks */ uint32_t sctps_recvheartbeatack; /* total input HB-ACK chunks */ uint32_t sctps_recvecne;/* total input ECNE chunks */ uint32_t sctps_recvauth;/* total input AUTH chunks */ uint32_t sctps_recvauthmissing; /* total input chunks missing AUTH */ uint32_t sctps_recvivalhmacid; /* total number of invalid HMAC ids * received */ uint32_t sctps_recvivalkeyid; /* total number of invalid secret ids * received */ uint32_t sctps_recvauthfailed; /* total number of auth failed */ uint32_t sctps_recvexpress; /* total fast path receives all one * chunk */ uint32_t sctps_recvexpressm; /* total fast path multi-part data */ uint32_t sctps_recvnocrc; uint32_t sctps_recvswcrc; uint32_t sctps_recvhwcrc; /* output statistics: */ uint32_t sctps_sendpackets; /* total output packets */ uint32_t sctps_sendsacks; /* total output SACKs */ uint32_t sctps_senddata;/* total output DATA chunks */ uint32_t sctps_sendretransdata; /* total output retransmitted DATA * chunks */ uint32_t sctps_sendfastretrans; /* total output fast retransmitted * DATA chunks */ uint32_t sctps_sendmultfastretrans; /* total FR's that happened * more than once to same * chunk (u-del multi-fr * algo). */ uint32_t sctps_sendheartbeat; /* total output HB chunks */ uint32_t sctps_sendecne;/* total output ECNE chunks */ uint32_t sctps_sendauth;/* total output AUTH chunks FIXME */ uint32_t sctps_senderrors; /* ip_output error counter */ uint32_t sctps_sendnocrc; uint32_t sctps_sendswcrc; uint32_t sctps_sendhwcrc; /* PCKDROPREP statistics: */ uint32_t sctps_pdrpfmbox; /* Packet drop from middle box */ uint32_t sctps_pdrpfehos; /* P-drop from end host */ uint32_t sctps_pdrpmbda;/* P-drops with data */ uint32_t sctps_pdrpmbct;/* P-drops, non-data, non-endhost */ uint32_t sctps_pdrpbwrpt; /* P-drop, non-endhost, bandwidth rep * only */ uint32_t sctps_pdrpcrupt; /* P-drop, not enough for chunk header */ uint32_t sctps_pdrpnedat; /* P-drop, not enough data to confirm */ uint32_t sctps_pdrppdbrk; /* P-drop, where process_chunk_drop * said break */ uint32_t sctps_pdrptsnnf; /* P-drop, could not find TSN */ uint32_t sctps_pdrpdnfnd; /* P-drop, attempt reverse TSN lookup */ uint32_t sctps_pdrpdiwnp; /* P-drop, e-host confirms zero-rwnd */ uint32_t sctps_pdrpdizrw; /* P-drop, midbox confirms no space */ uint32_t sctps_pdrpbadd;/* P-drop, data did not match TSN */ uint32_t sctps_pdrpmark;/* P-drop, TSN's marked for Fast Retran */ /* timeouts */ uint32_t sctps_timoiterator; /* Number of iterator timers that * fired */ uint32_t sctps_timodata;/* Number of T3 data time outs */ uint32_t sctps_timowindowprobe; /* Number of window probe (T3) timers * that fired */ uint32_t sctps_timoinit;/* Number of INIT timers that fired */ uint32_t sctps_timosack;/* Number of sack timers that fired */ uint32_t sctps_timoshutdown; /* Number of shutdown timers that * fired */ uint32_t sctps_timoheartbeat; /* Number of heartbeat timers that * fired */ uint32_t sctps_timocookie; /* Number of times a cookie timeout * fired */ uint32_t sctps_timosecret; /* Number of times an endpoint changed * its cookie secret */ uint32_t sctps_timopathmtu; /* Number of PMTU timers that fired */ uint32_t sctps_timoshutdownack; /* Number of shutdown ack timers that * fired */ uint32_t sctps_timoshutdownguard; /* Number of shutdown guard * timers that fired */ uint32_t sctps_timostrmrst; /* Number of stream reset timers that * fired */ uint32_t sctps_timoearlyfr; /* Number of early FR timers that * fired */ uint32_t sctps_timoasconf; /* Number of times an asconf timer * fired */ uint32_t sctps_timodelprim; /* Number of times a prim_deleted * timer fired */ uint32_t sctps_timoautoclose; /* Number of times auto close timer * fired */ uint32_t sctps_timoassockill; /* Number of asoc free timers expired */ uint32_t sctps_timoinpkill; /* Number of inp free timers expired */ /* former early FR counters */ uint32_t sctps_spare[11]; /* others */ uint32_t sctps_hdrops; /* packet shorter than header */ uint32_t sctps_badsum; /* checksum error */ uint32_t sctps_noport; /* no endpoint for port */ uint32_t sctps_badvtag; /* bad v-tag */ uint32_t sctps_badsid; /* bad SID */ uint32_t sctps_nomem; /* no memory */ uint32_t sctps_fastretransinrtt; /* number of multiple FR in a * RTT window */ uint32_t sctps_markedretrans; uint32_t sctps_naglesent; /* nagle allowed sending */ uint32_t sctps_naglequeued; /* nagle doesn't allow sending */ uint32_t sctps_maxburstqueued; /* max burst doesn't allow sending */ uint32_t sctps_ifnomemqueued; /* look ahead tells us no memory in * interface ring buffer OR we had a * send error and are queuing one * send. */ uint32_t sctps_windowprobed; /* total number of window probes sent */ uint32_t sctps_lowlevelerr; /* total times an output error causes * us to clamp down on next user send. */ uint32_t sctps_lowlevelerrusr; /* total times sctp_senderrors were * caused from a user send from a user * invoked send not a sack response */ uint32_t sctps_datadropchklmt; /* Number of in data drops due to * chunk limit reached */ uint32_t sctps_datadroprwnd; /* Number of in data drops due to rwnd * limit reached */ uint32_t sctps_ecnereducedcwnd; /* Number of times a ECN reduced the * cwnd */ uint32_t sctps_vtagexpress; /* Used express lookup via vtag */ uint32_t sctps_vtagbogus; /* Collision in express lookup. */ uint32_t sctps_primary_randry; /* Number of times the sender ran dry * of user data on primary */ uint32_t sctps_cmt_randry; /* Same for above */ uint32_t sctps_slowpath_sack; /* Sacks the slow way */ uint32_t sctps_wu_sacks_sent; /* Window Update only sacks sent */ uint32_t sctps_sends_with_flags; /* number of sends with * sinfo_flags !=0 */ uint32_t sctps_sends_with_unord; /* number of unordered sends */ uint32_t sctps_sends_with_eof; /* number of sends with EOF flag set */ uint32_t sctps_sends_with_abort; /* number of sends with ABORT * flag set */ uint32_t sctps_protocol_drain_calls; /* number of times protocol * drain called */ uint32_t sctps_protocol_drains_done; /* number of times we did a * protocol drain */ uint32_t sctps_read_peeks; /* Number of times recv was called * with peek */ uint32_t sctps_cached_chk; /* Number of cached chunks used */ uint32_t sctps_cached_strmoq; /* Number of cached stream oq's used */ uint32_t sctps_left_abandon; /* Number of unread messages abandoned * by close */ uint32_t sctps_send_burst_avoid; /* Unused */ uint32_t sctps_send_cwnd_avoid; /* Send cwnd full avoidance, already * max burst inflight to net */ uint32_t sctps_fwdtsn_map_over; /* number of map array over-runs via * fwd-tsn's */ uint32_t sctps_queue_upd_ecne; /* Number of times we queued or * updated an ECN chunk on send queue */ uint32_t sctps_reserved[31]; /* Future ABI compat - remove int's * from here when adding new */ }; #define SCTP_STAT_INCR(_x) SCTP_STAT_INCR_BY(_x,1) #define SCTP_STAT_DECR(_x) SCTP_STAT_DECR_BY(_x,1) #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT) #define SCTP_STAT_INCR_BY(_x,_d) (SCTP_BASE_STATS[PCPU_GET(cpuid)]._x += _d) #define SCTP_STAT_DECR_BY(_x,_d) (SCTP_BASE_STATS[PCPU_GET(cpuid)]._x -= _d) #else #define SCTP_STAT_INCR_BY(_x,_d) atomic_add_int(&SCTP_BASE_STAT(_x), _d) #define SCTP_STAT_DECR_BY(_x,_d) atomic_subtract_int(&SCTP_BASE_STAT(_x), _d) #endif /* The following macros are for handling MIB values, */ #define SCTP_STAT_INCR_COUNTER32(_x) SCTP_STAT_INCR(_x) #define SCTP_STAT_INCR_COUNTER64(_x) SCTP_STAT_INCR(_x) #define SCTP_STAT_INCR_GAUGE32(_x) SCTP_STAT_INCR(_x) #define SCTP_STAT_DECR_COUNTER32(_x) SCTP_STAT_DECR(_x) #define SCTP_STAT_DECR_COUNTER64(_x) SCTP_STAT_DECR(_x) #define SCTP_STAT_DECR_GAUGE32(_x) SCTP_STAT_DECR(_x) union sctp_sockstore { struct sockaddr_in sin; struct sockaddr_in6 sin6; struct sockaddr sa; }; /***********************************/ /* And something for us old timers */ /***********************************/ #ifndef ntohll #include #define ntohll(x) be64toh(x) #endif #ifndef htonll #include #define htonll(x) htobe64(x) #endif /***********************************/ struct xsctp_inpcb { uint32_t last; uint32_t flags; uint64_t features; uint32_t total_sends; uint32_t total_recvs; uint32_t total_nospaces; uint32_t fragmentation_point; uint16_t local_port; uint16_t qlen_old; uint16_t maxqlen_old; void *socket; uint32_t qlen; uint32_t maxqlen; #if defined(__LP64__) uint32_t extra_padding[27]; /* future */ #else uint32_t extra_padding[28]; /* future */ #endif }; struct xsctp_tcb { union sctp_sockstore primary_addr; /* sctpAssocEntry 5/6 */ uint32_t last; uint32_t heartbeat_interval; /* sctpAssocEntry 7 */ uint32_t state; /* sctpAssocEntry 8 */ uint32_t in_streams; /* sctpAssocEntry 9 */ uint32_t out_streams; /* sctpAssocEntry 10 */ uint32_t max_nr_retrans;/* sctpAssocEntry 11 */ uint32_t primary_process; /* sctpAssocEntry 12 */ uint32_t T1_expireries; /* sctpAssocEntry 13 */ uint32_t T2_expireries; /* sctpAssocEntry 14 */ uint32_t retransmitted_tsns; /* sctpAssocEntry 15 */ uint32_t total_sends; uint32_t total_recvs; uint32_t local_tag; uint32_t remote_tag; uint32_t initial_tsn; uint32_t highest_tsn; uint32_t cumulative_tsn; uint32_t cumulative_tsn_ack; uint32_t mtu; uint32_t refcnt; uint16_t local_port; /* sctpAssocEntry 3 */ uint16_t remote_port; /* sctpAssocEntry 4 */ struct sctp_timeval start_time; /* sctpAssocEntry 16 */ struct sctp_timeval discontinuity_time; /* sctpAssocEntry 17 */ uint32_t peers_rwnd; sctp_assoc_t assoc_id; /* sctpAssocEntry 1 */ uint32_t extra_padding[32]; /* future */ }; struct xsctp_laddr { union sctp_sockstore address; /* sctpAssocLocalAddrEntry 1/2 */ uint32_t last; struct sctp_timeval start_time; /* sctpAssocLocalAddrEntry 3 */ uint32_t extra_padding[32]; /* future */ }; struct xsctp_raddr { union sctp_sockstore address; /* sctpAssocLocalRemEntry 1/2 */ uint32_t last; uint32_t rto; /* sctpAssocLocalRemEntry 5 */ uint32_t max_path_rtx; /* sctpAssocLocalRemEntry 6 */ uint32_t rtx; /* sctpAssocLocalRemEntry 7 */ uint32_t error_counter; /* */ uint32_t cwnd; /* */ uint32_t flight_size; /* */ uint32_t mtu; /* */ uint8_t active; /* sctpAssocLocalRemEntry 3 */ uint8_t confirmed; /* */ uint8_t heartbeat_enabled; /* sctpAssocLocalRemEntry 4 */ uint8_t potentially_failed; struct sctp_timeval start_time; /* sctpAssocLocalRemEntry 8 */ uint32_t rtt; uint32_t heartbeat_interval; uint32_t ssthresh; uint32_t extra_padding[30]; /* future */ }; #define SCTP_MAX_LOGGING_SIZE 30000 #define SCTP_TRACE_PARAMS 6 /* This number MUST be even */ struct sctp_log_entry { uint64_t timestamp; uint32_t subsys; uint32_t padding; uint32_t params[SCTP_TRACE_PARAMS]; }; struct sctp_log { struct sctp_log_entry entry[SCTP_MAX_LOGGING_SIZE]; uint32_t index; uint32_t padding; }; /* * Kernel defined for sctp_send */ #if defined(_KERNEL) || defined(__Userspace__) int sctp_lower_sosend(struct socket *so, struct sockaddr *addr, struct uio *uio, struct mbuf *i_pak, struct mbuf *control, int flags, struct sctp_sndrcvinfo *srcv ,struct thread *p ); int sctp_sorecvmsg(struct socket *so, struct uio *uio, struct mbuf **mp, struct sockaddr *from, int fromlen, int *msg_flags, struct sctp_sndrcvinfo *sinfo, int filling_sinfo); #endif /* * API system calls */ #if !(defined(_KERNEL)) && !(defined(__Userspace__)) __BEGIN_DECLS int sctp_peeloff(int, sctp_assoc_t); int sctp_bindx(int, struct sockaddr *, int, int); int sctp_connectx(int, const struct sockaddr *, int, sctp_assoc_t *); int sctp_getaddrlen(sa_family_t); int sctp_getpaddrs(int, sctp_assoc_t, struct sockaddr **); void sctp_freepaddrs(struct sockaddr *); int sctp_getladdrs(int, sctp_assoc_t, struct sockaddr **); void sctp_freeladdrs(struct sockaddr *); int sctp_opt_info(int, sctp_assoc_t, int, void *, socklen_t *); /* deprecated */ ssize_t sctp_sendmsg(int, const void *, size_t, const struct sockaddr *, socklen_t, uint32_t, uint32_t, uint16_t, uint32_t, uint32_t); /* deprecated */ ssize_t sctp_send(int, const void *, size_t, const struct sctp_sndrcvinfo *, int); /* deprecated */ ssize_t sctp_sendx(int, const void *, size_t, struct sockaddr *, int, struct sctp_sndrcvinfo *, int); /* deprecated */ ssize_t sctp_sendmsgx(int sd, const void *, size_t, struct sockaddr *, int, uint32_t, uint32_t, uint16_t, uint32_t, uint32_t); sctp_assoc_t sctp_getassocid(int, struct sockaddr *); /* deprecated */ ssize_t sctp_recvmsg(int, void *, size_t, struct sockaddr *, socklen_t *, struct sctp_sndrcvinfo *, int *); ssize_t sctp_sendv(int, const struct iovec *, int, struct sockaddr *, int, void *, socklen_t, unsigned int, int); ssize_t sctp_recvv(int, const struct iovec *, int, struct sockaddr *, socklen_t *, void *, socklen_t *, unsigned int *, int *); __END_DECLS #endif /* !_KERNEL */ #endif /* !__sctp_uio_h__ */ Index: head/sys/netinet/sctp_usrreq.c =================================================================== --- head/sys/netinet/sctp_usrreq.c (revision 297661) +++ head/sys/netinet/sctp_usrreq.c (revision 297662) @@ -1,7444 +1,7516 @@ /*- * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved. * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * a) Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * b) Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the distribution. * * c) Neither the name of Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #ifdef INET6 #include #endif #include #include #include #include #include #include #include #include #include #include extern const struct sctp_cc_functions sctp_cc_functions[]; extern const struct sctp_ss_functions sctp_ss_functions[]; void sctp_init(void) { u_long sb_max_adj; /* Initialize and modify the sysctled variables */ sctp_init_sysctls(); if ((nmbclusters / 8) > SCTP_ASOC_MAX_CHUNKS_ON_QUEUE) SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue) = (nmbclusters / 8); /* * Allow a user to take no more than 1/2 the number of clusters or * the SB_MAX whichever is smaller for the send window. */ sb_max_adj = (u_long)((u_quad_t) (SB_MAX) * MCLBYTES / (MSIZE + MCLBYTES)); SCTP_BASE_SYSCTL(sctp_sendspace) = min(sb_max_adj, (((uint32_t) nmbclusters / 2) * SCTP_DEFAULT_MAXSEGMENT)); /* * Now for the recv window, should we take the same amount? or * should I do 1/2 the SB_MAX instead in the SB_MAX min above. For * now I will just copy. */ SCTP_BASE_SYSCTL(sctp_recvspace) = SCTP_BASE_SYSCTL(sctp_sendspace); SCTP_BASE_VAR(first_time) = 0; SCTP_BASE_VAR(sctp_pcb_initialized) = 0; sctp_pcb_init(); #if defined(SCTP_PACKET_LOGGING) SCTP_BASE_VAR(packet_log_writers) = 0; SCTP_BASE_VAR(packet_log_end) = 0; bzero(&SCTP_BASE_VAR(packet_log_buffer), SCTP_PACKET_LOG_SIZE); #endif } void sctp_finish(void) { sctp_pcb_finish(); } void sctp_pathmtu_adjustment(struct sctp_tcb *stcb, uint16_t nxtsz) { struct sctp_tmit_chunk *chk; uint16_t overhead; /* Adjust that too */ stcb->asoc.smallest_mtu = nxtsz; /* now off to subtract IP_DF flag if needed */ overhead = IP_HDR_SIZE; if (sctp_auth_is_required_chunk(SCTP_DATA, stcb->asoc.peer_auth_chunks)) { overhead += sctp_get_auth_chunk_len(stcb->asoc.peer_hmac_id); } TAILQ_FOREACH(chk, &stcb->asoc.send_queue, sctp_next) { if ((chk->send_size + overhead) > nxtsz) { chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; } } TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) { if ((chk->send_size + overhead) > nxtsz) { /* * For this guy we also mark for immediate resend * since we sent to big of chunk */ chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; if (chk->sent < SCTP_DATAGRAM_RESEND) { sctp_flight_size_decrease(chk); sctp_total_flight_decrease(stcb, chk); chk->sent = SCTP_DATAGRAM_RESEND; sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt); chk->rec.data.doing_fast_retransmit = 0; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FLIGHT_LOGGING_ENABLE) { sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_PMTU, chk->whoTo->flight_size, chk->book_size, (uint32_t) (uintptr_t) chk->whoTo, chk->rec.data.TSN_seq); } /* Clear any time so NO RTT is being done */ chk->do_rtt = 0; } } } } #ifdef INET static void sctp_notify_mbuf(struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sctp_nets *net, struct ip *ip, struct sctphdr *sh) { struct icmp *icmph; int totsz, tmr_stopped = 0; uint16_t nxtsz; /* protection */ if ((inp == NULL) || (stcb == NULL) || (net == NULL) || (ip == NULL) || (sh == NULL)) { if (stcb != NULL) { SCTP_TCB_UNLOCK(stcb); } return; } /* First job is to verify the vtag matches what I would send */ if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) { SCTP_TCB_UNLOCK(stcb); return; } icmph = (struct icmp *)((caddr_t)ip - (sizeof(struct icmp) - sizeof(struct ip))); if (icmph->icmp_type != ICMP_UNREACH) { /* We only care about unreachable */ SCTP_TCB_UNLOCK(stcb); return; } if (icmph->icmp_code != ICMP_UNREACH_NEEDFRAG) { /* not a unreachable message due to frag. */ SCTP_TCB_UNLOCK(stcb); return; } totsz = ntohs(ip->ip_len); nxtsz = ntohs(icmph->icmp_nextmtu); if (nxtsz == 0) { /* * old type router that does not tell us what the next size * mtu is. Rats we will have to guess (in a educated fashion * of course) */ nxtsz = sctp_get_prev_mtu(totsz); } /* Stop any PMTU timer */ if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) { tmr_stopped = 1; sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_1); } /* Adjust destination size limit */ if (net->mtu > nxtsz) { net->mtu = nxtsz; if (net->port) { net->mtu -= sizeof(struct udphdr); } } /* now what about the ep? */ if (stcb->asoc.smallest_mtu > nxtsz) { sctp_pathmtu_adjustment(stcb, nxtsz); } if (tmr_stopped) sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net); SCTP_TCB_UNLOCK(stcb); } void sctp_notify(struct sctp_inpcb *inp, struct ip *ip, struct sctphdr *sh, struct sockaddr *to, struct sctp_tcb *stcb, struct sctp_nets *net) { #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) struct socket *so; #endif struct icmp *icmph; /* protection */ if ((inp == NULL) || (stcb == NULL) || (net == NULL) || (sh == NULL) || (to == NULL)) { if (stcb) SCTP_TCB_UNLOCK(stcb); return; } /* First job is to verify the vtag matches what I would send */ if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) { SCTP_TCB_UNLOCK(stcb); return; } icmph = (struct icmp *)((caddr_t)ip - (sizeof(struct icmp) - sizeof(struct ip))); if (icmph->icmp_type != ICMP_UNREACH) { /* We only care about unreachable */ SCTP_TCB_UNLOCK(stcb); return; } if ((icmph->icmp_code == ICMP_UNREACH_NET) || (icmph->icmp_code == ICMP_UNREACH_HOST) || (icmph->icmp_code == ICMP_UNREACH_NET_UNKNOWN) || (icmph->icmp_code == ICMP_UNREACH_HOST_UNKNOWN) || (icmph->icmp_code == ICMP_UNREACH_ISOLATED) || (icmph->icmp_code == ICMP_UNREACH_NET_PROHIB) || (icmph->icmp_code == ICMP_UNREACH_HOST_PROHIB) || (icmph->icmp_code == ICMP_UNREACH_FILTER_PROHIB)) { /* * Hmm reachablity problems we must examine closely. If its * not reachable, we may have lost a network. Or if there is * NO protocol at the other end named SCTP. well we consider * it a OOTB abort. */ if (net->dest_state & SCTP_ADDR_REACHABLE) { /* Ok that destination is NOT reachable */ net->dest_state &= ~SCTP_ADDR_REACHABLE; net->dest_state &= ~SCTP_ADDR_PF; sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN, stcb, 0, (void *)net, SCTP_SO_NOT_LOCKED); } SCTP_TCB_UNLOCK(stcb); } else if ((icmph->icmp_code == ICMP_UNREACH_PROTOCOL) || (icmph->icmp_code == ICMP_UNREACH_PORT)) { /* * Here the peer is either playing tricks on us, including * an address that belongs to someone who does not support * SCTP OR was a userland implementation that shutdown and * now is dead. In either case treat it like a OOTB abort * with no TCB */ sctp_abort_notification(stcb, 1, 0, NULL, SCTP_SO_NOT_LOCKED); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) so = SCTP_INP_SO(inp); atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); #endif (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_2); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); /* SCTP_TCB_UNLOCK(stcb); MT: I think this is not needed. */ #endif /* no need to unlock here, since the TCB is gone */ } else { SCTP_TCB_UNLOCK(stcb); } } #endif #ifdef INET void sctp_ctlinput(cmd, sa, vip) int cmd; struct sockaddr *sa; void *vip; { struct ip *ip = vip; struct sctphdr *sh; uint32_t vrf_id; /* FIX, for non-bsd is this right? */ vrf_id = SCTP_DEFAULT_VRFID; if (sa->sa_family != AF_INET || ((struct sockaddr_in *)sa)->sin_addr.s_addr == INADDR_ANY) { return; } if (PRC_IS_REDIRECT(cmd)) { ip = 0; } else if ((unsigned)cmd >= PRC_NCMDS || inetctlerrmap[cmd] == 0) { return; } if (ip) { struct sctp_inpcb *inp = NULL; struct sctp_tcb *stcb = NULL; struct sctp_nets *net = NULL; struct sockaddr_in to, from; sh = (struct sctphdr *)((caddr_t)ip + (ip->ip_hl << 2)); bzero(&to, sizeof(to)); bzero(&from, sizeof(from)); from.sin_family = to.sin_family = AF_INET; from.sin_len = to.sin_len = sizeof(to); from.sin_port = sh->src_port; from.sin_addr = ip->ip_src; to.sin_port = sh->dest_port; to.sin_addr = ip->ip_dst; /* * 'to' holds the dest of the packet that failed to be sent. * 'from' holds our local endpoint address. Thus we reverse * the to and the from in the lookup. */ stcb = sctp_findassociation_addr_sa((struct sockaddr *)&to, (struct sockaddr *)&from, &inp, &net, 1, vrf_id); if (stcb != NULL && inp && (inp->sctp_socket != NULL)) { if (cmd != PRC_MSGSIZE) { sctp_notify(inp, ip, sh, (struct sockaddr *)&to, stcb, net); } else { /* handle possible ICMP size messages */ sctp_notify_mbuf(inp, stcb, net, ip, sh); } } else { if ((stcb == NULL) && (inp != NULL)) { /* reduce ref-count */ SCTP_INP_WLOCK(inp); SCTP_INP_DECR_REF(inp); SCTP_INP_WUNLOCK(inp); } if (stcb) { SCTP_TCB_UNLOCK(stcb); } } } return; } #endif static int sctp_getcred(SYSCTL_HANDLER_ARGS) { struct xucred xuc; struct sockaddr_in addrs[2]; struct sctp_inpcb *inp; struct sctp_nets *net; struct sctp_tcb *stcb; int error; uint32_t vrf_id; /* FIX, for non-bsd is this right? */ vrf_id = SCTP_DEFAULT_VRFID; error = priv_check(req->td, PRIV_NETINET_GETCRED); if (error) return (error); error = SYSCTL_IN(req, addrs, sizeof(addrs)); if (error) return (error); stcb = sctp_findassociation_addr_sa(sintosa(&addrs[1]), sintosa(&addrs[0]), &inp, &net, 1, vrf_id); if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) { if ((inp != NULL) && (stcb == NULL)) { /* reduce ref-count */ SCTP_INP_WLOCK(inp); SCTP_INP_DECR_REF(inp); goto cred_can_cont; } SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT); error = ENOENT; goto out; } SCTP_TCB_UNLOCK(stcb); /* * We use the write lock here, only since in the error leg we need * it. If we used RLOCK, then we would have to * wlock/decr/unlock/rlock. Which in theory could create a hole. * Better to use higher wlock. */ SCTP_INP_WLOCK(inp); cred_can_cont: error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket); if (error) { SCTP_INP_WUNLOCK(inp); goto out; } cru2x(inp->sctp_socket->so_cred, &xuc); SCTP_INP_WUNLOCK(inp); error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred)); out: return (error); } SYSCTL_PROC(_net_inet_sctp, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW, 0, 0, sctp_getcred, "S,ucred", "Get the ucred of a SCTP connection"); #ifdef INET static void sctp_abort(struct socket *so) { struct sctp_inpcb *inp; uint32_t flags; inp = (struct sctp_inpcb *)so->so_pcb; if (inp == NULL) { return; } sctp_must_try_again: flags = inp->sctp_flags; #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, NULL, 17); #endif if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) && (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) { #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, NULL, 16); #endif sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, SCTP_CALLED_AFTER_CMPSET_OFCLOSE); SOCK_LOCK(so); SCTP_SB_CLEAR(so->so_snd); /* * same for the rcv ones, they are only here for the * accounting/select. */ SCTP_SB_CLEAR(so->so_rcv); /* Now null out the reference, we are completely detached. */ so->so_pcb = NULL; SOCK_UNLOCK(so); } else { flags = inp->sctp_flags; if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) { goto sctp_must_try_again; } } return; } static int sctp_attach(struct socket *so, int proto SCTP_UNUSED, struct thread *p SCTP_UNUSED) { struct sctp_inpcb *inp; struct inpcb *ip_inp; int error; uint32_t vrf_id = SCTP_DEFAULT_VRFID; inp = (struct sctp_inpcb *)so->so_pcb; if (inp != 0) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return (EINVAL); } if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { error = SCTP_SORESERVE(so, SCTP_BASE_SYSCTL(sctp_sendspace), SCTP_BASE_SYSCTL(sctp_recvspace)); if (error) { return (error); } } error = sctp_inpcb_alloc(so, vrf_id); if (error) { return (error); } inp = (struct sctp_inpcb *)so->so_pcb; SCTP_INP_WLOCK(inp); inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUND_V6; /* I'm not v6! */ ip_inp = &inp->ip_inp.inp; ip_inp->inp_vflag |= INP_IPV4; ip_inp->inp_ip_ttl = MODULE_GLOBAL(ip_defttl); SCTP_INP_WUNLOCK(inp); return (0); } static int sctp_bind(struct socket *so, struct sockaddr *addr, struct thread *p) { struct sctp_inpcb *inp; inp = (struct sctp_inpcb *)so->so_pcb; if (inp == NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return (EINVAL); } if (addr != NULL) { if ((addr->sa_family != AF_INET) || (addr->sa_len != sizeof(struct sockaddr_in))) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return (EINVAL); } } return (sctp_inpcb_bind(so, addr, NULL, p)); } #endif void sctp_close(struct socket *so) { struct sctp_inpcb *inp; uint32_t flags; inp = (struct sctp_inpcb *)so->so_pcb; if (inp == NULL) return; /* * Inform all the lower layer assoc that we are done. */ sctp_must_try_again: flags = inp->sctp_flags; #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, NULL, 17); #endif if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) && (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) { if (((so->so_options & SO_LINGER) && (so->so_linger == 0)) || (so->so_rcv.sb_cc > 0)) { #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, NULL, 13); #endif sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, SCTP_CALLED_AFTER_CMPSET_OFCLOSE); } else { #ifdef SCTP_LOG_CLOSING sctp_log_closing(inp, NULL, 14); #endif sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE, SCTP_CALLED_AFTER_CMPSET_OFCLOSE); } /* * The socket is now detached, no matter what the state of * the SCTP association. */ SOCK_LOCK(so); SCTP_SB_CLEAR(so->so_snd); /* * same for the rcv ones, they are only here for the * accounting/select. */ SCTP_SB_CLEAR(so->so_rcv); /* Now null out the reference, we are completely detached. */ so->so_pcb = NULL; SOCK_UNLOCK(so); } else { flags = inp->sctp_flags; if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) { goto sctp_must_try_again; } } return; } int sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, struct mbuf *control, struct thread *p); int sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, struct mbuf *control, struct thread *p) { struct sctp_inpcb *inp; int error; inp = (struct sctp_inpcb *)so->so_pcb; if (inp == NULL) { if (control) { sctp_m_freem(control); control = NULL; } SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); sctp_m_freem(m); return (EINVAL); } /* Got to have an to address if we are NOT a connected socket */ if ((addr == NULL) && ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) || (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE))) { goto connected_type; } else if (addr == NULL) { SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EDESTADDRREQ); error = EDESTADDRREQ; sctp_m_freem(m); if (control) { sctp_m_freem(control); control = NULL; } return (error); } #ifdef INET6 if (addr->sa_family != AF_INET) { /* must be a v4 address! */ SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EDESTADDRREQ); sctp_m_freem(m); if (control) { sctp_m_freem(control); control = NULL; } error = EDESTADDRREQ; return (error); } #endif /* INET6 */ connected_type: /* now what about control */ if (control) { if (inp->control) { SCTP_PRINTF("huh? control set?\n"); sctp_m_freem(inp->control); inp->control = NULL; } inp->control = control; } /* Place the data */ if (inp->pkt) { SCTP_BUF_NEXT(inp->pkt_last) = m; inp->pkt_last = m; } else { inp->pkt_last = inp->pkt = m; } if ( /* FreeBSD uses a flag passed */ ((flags & PRUS_MORETOCOME) == 0) ) { /* * note with the current version this code will only be used * by OpenBSD-- NetBSD, FreeBSD, and MacOS have methods for * re-defining sosend to use the sctp_sosend. One can * optionally switch back to this code (by changing back the * definitions) but this is not advisable. This code is used * by FreeBSD when sending a file with sendfile() though. */ int ret; ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags); inp->pkt = NULL; inp->control = NULL; return (ret); } else { return (0); } } int sctp_disconnect(struct socket *so) { struct sctp_inpcb *inp; inp = (struct sctp_inpcb *)so->so_pcb; if (inp == NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN); return (ENOTCONN); } SCTP_INP_RLOCK(inp); if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { if (LIST_EMPTY(&inp->sctp_asoc_list)) { /* No connection */ SCTP_INP_RUNLOCK(inp); return (0); } else { struct sctp_association *asoc; struct sctp_tcb *stcb; stcb = LIST_FIRST(&inp->sctp_asoc_list); if (stcb == NULL) { SCTP_INP_RUNLOCK(inp); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return (EINVAL); } SCTP_TCB_LOCK(stcb); asoc = &stcb->asoc; if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { /* We are about to be freed, out of here */ SCTP_TCB_UNLOCK(stcb); SCTP_INP_RUNLOCK(inp); return (0); } if (((so->so_options & SO_LINGER) && (so->so_linger == 0)) || (so->so_rcv.sb_cc > 0)) { if (SCTP_GET_STATE(asoc) != SCTP_STATE_COOKIE_WAIT) { /* Left with Data unread */ struct mbuf *err; err = sctp_get_mbuf_for_msg(sizeof(struct sctp_paramhdr), 0, M_NOWAIT, 1, MT_DATA); if (err) { /* * Fill in the user * initiated abort */ struct sctp_paramhdr *ph; ph = mtod(err, struct sctp_paramhdr *); SCTP_BUF_LEN(err) = sizeof(struct sctp_paramhdr); ph->param_type = htons(SCTP_CAUSE_USER_INITIATED_ABT); ph->param_length = htons(SCTP_BUF_LEN(err)); } sctp_send_abort_tcb(stcb, err, SCTP_SO_LOCKED); SCTP_STAT_INCR_COUNTER32(sctps_aborted); } SCTP_INP_RUNLOCK(inp); if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) || (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { SCTP_STAT_DECR_GAUGE32(sctps_currestab); } (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_3); /* No unlock tcb assoc is gone */ return (0); } if (TAILQ_EMPTY(&asoc->send_queue) && TAILQ_EMPTY(&asoc->sent_queue) && (asoc->stream_queue_cnt == 0)) { /* there is nothing queued to send, so done */ if (asoc->locked_on_sending) { goto abort_anyway; } if ((SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) && (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) { /* only send SHUTDOWN 1st time thru */ struct sctp_nets *netp; if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) || (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { SCTP_STAT_DECR_GAUGE32(sctps_currestab); } SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT); SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING); sctp_stop_timers_for_shutdown(stcb); if (stcb->asoc.alternate) { netp = stcb->asoc.alternate; } else { netp = stcb->asoc.primary_destination; } sctp_send_shutdown(stcb, netp); sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, stcb->sctp_ep, stcb, netp); sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb, netp); sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_LOCKED); } } else { /* * we still got (or just got) data to send, * so set SHUTDOWN_PENDING */ /* * XXX sockets draft says that SCTP_EOF * should be sent with no data. currently, * we will allow user data to be sent first * and move to SHUTDOWN-PENDING */ struct sctp_nets *netp; if (stcb->asoc.alternate) { netp = stcb->asoc.alternate; } else { netp = stcb->asoc.primary_destination; } asoc->state |= SCTP_STATE_SHUTDOWN_PENDING; sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb, netp); if (asoc->locked_on_sending) { /* Locked to send out the data */ struct sctp_stream_queue_pending *sp; sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead); if (sp == NULL) { SCTP_PRINTF("Error, sp is NULL, locked on sending is non-null strm:%d\n", asoc->locked_on_sending->stream_no); } else { if ((sp->length == 0) && (sp->msg_is_complete == 0)) asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT; } } if (TAILQ_EMPTY(&asoc->send_queue) && TAILQ_EMPTY(&asoc->sent_queue) && (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) { struct mbuf *op_err; abort_anyway: op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, ""); stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_USRREQ + SCTP_LOC_4; sctp_send_abort_tcb(stcb, op_err, SCTP_SO_LOCKED); SCTP_STAT_INCR_COUNTER32(sctps_aborted); if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) || (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { SCTP_STAT_DECR_GAUGE32(sctps_currestab); } SCTP_INP_RUNLOCK(inp); (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_5); return (0); } else { sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED); } } soisdisconnecting(so); SCTP_TCB_UNLOCK(stcb); SCTP_INP_RUNLOCK(inp); return (0); } /* not reached */ } else { /* UDP model does not support this */ SCTP_INP_RUNLOCK(inp); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP); return (EOPNOTSUPP); } } int sctp_flush(struct socket *so, int how) { /* * We will just clear out the values and let subsequent close clear * out the data, if any. Note if the user did a shutdown(SHUT_RD) * they will not be able to read the data, the socket will block * that from happening. */ struct sctp_inpcb *inp; inp = (struct sctp_inpcb *)so->so_pcb; if (inp == NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return (EINVAL); } SCTP_INP_RLOCK(inp); /* For the 1 to many model this does nothing */ if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) { SCTP_INP_RUNLOCK(inp); return (0); } SCTP_INP_RUNLOCK(inp); if ((how == PRU_FLUSH_RD) || (how == PRU_FLUSH_RDWR)) { /* * First make sure the sb will be happy, we don't use these * except maybe the count */ SCTP_INP_WLOCK(inp); SCTP_INP_READ_LOCK(inp); inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_CANT_READ; SCTP_INP_READ_UNLOCK(inp); SCTP_INP_WUNLOCK(inp); so->so_rcv.sb_cc = 0; so->so_rcv.sb_mbcnt = 0; so->so_rcv.sb_mb = NULL; } if ((how == PRU_FLUSH_WR) || (how == PRU_FLUSH_RDWR)) { /* * First make sure the sb will be happy, we don't use these * except maybe the count */ so->so_snd.sb_cc = 0; so->so_snd.sb_mbcnt = 0; so->so_snd.sb_mb = NULL; } return (0); } int sctp_shutdown(struct socket *so) { struct sctp_inpcb *inp; inp = (struct sctp_inpcb *)so->so_pcb; if (inp == NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return (EINVAL); } SCTP_INP_RLOCK(inp); /* For UDP model this is a invalid call */ if (!((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { /* Restore the flags that the soshutdown took away. */ SOCKBUF_LOCK(&so->so_rcv); so->so_rcv.sb_state &= ~SBS_CANTRCVMORE; SOCKBUF_UNLOCK(&so->so_rcv); /* This proc will wakeup for read and do nothing (I hope) */ SCTP_INP_RUNLOCK(inp); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP); return (EOPNOTSUPP); } else { /* * Ok, if we reach here its the TCP model and it is either a * SHUT_WR or SHUT_RDWR. This means we put the shutdown flag * against it. */ struct sctp_tcb *stcb; struct sctp_association *asoc; struct sctp_nets *netp; if ((so->so_state & (SS_ISCONNECTED | SS_ISCONNECTING | SS_ISDISCONNECTING)) == 0) { SCTP_INP_RUNLOCK(inp); return (ENOTCONN); } socantsendmore(so); stcb = LIST_FIRST(&inp->sctp_asoc_list); if (stcb == NULL) { /* * Ok, we hit the case that the shutdown call was * made after an abort or something. Nothing to do * now. */ SCTP_INP_RUNLOCK(inp); return (0); } SCTP_TCB_LOCK(stcb); asoc = &stcb->asoc; if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) { SCTP_TCB_UNLOCK(stcb); SCTP_INP_RUNLOCK(inp); return (0); } if ((SCTP_GET_STATE(asoc) != SCTP_STATE_COOKIE_WAIT) && (SCTP_GET_STATE(asoc) != SCTP_STATE_COOKIE_ECHOED) && (SCTP_GET_STATE(asoc) != SCTP_STATE_OPEN)) { /* * If we are not in or before ESTABLISHED, there is * no protocol action required. */ SCTP_TCB_UNLOCK(stcb); SCTP_INP_RUNLOCK(inp); return (0); } if (stcb->asoc.alternate) { netp = stcb->asoc.alternate; } else { netp = stcb->asoc.primary_destination; } if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) && TAILQ_EMPTY(&asoc->send_queue) && TAILQ_EMPTY(&asoc->sent_queue) && (asoc->stream_queue_cnt == 0)) { if (asoc->locked_on_sending) { goto abort_anyway; } /* there is nothing queued to send, so I'm done... */ SCTP_STAT_DECR_GAUGE32(sctps_currestab); SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT); SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING); sctp_stop_timers_for_shutdown(stcb); sctp_send_shutdown(stcb, netp); sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, stcb->sctp_ep, stcb, netp); } else { /* * We still got (or just got) data to send, so set * SHUTDOWN_PENDING. */ SCTP_ADD_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING); if (asoc->locked_on_sending) { /* Locked to send out the data */ struct sctp_stream_queue_pending *sp; sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead); if (sp == NULL) { SCTP_PRINTF("Error, sp is NULL, locked on sending is non-null strm:%d\n", asoc->locked_on_sending->stream_no); } else { if ((sp->length == 0) && (sp->msg_is_complete == 0)) { SCTP_ADD_SUBSTATE(asoc, SCTP_STATE_PARTIAL_MSG_LEFT); } } } if (TAILQ_EMPTY(&asoc->send_queue) && TAILQ_EMPTY(&asoc->sent_queue) && (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) { struct mbuf *op_err; abort_anyway: op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, ""); stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6; sctp_abort_an_association(stcb->sctp_ep, stcb, op_err, SCTP_SO_LOCKED); SCTP_INP_RUNLOCK(inp); return (0); } } sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb, netp); /* * XXX: Why do this in the case where we have still data * queued? */ sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED); SCTP_TCB_UNLOCK(stcb); SCTP_INP_RUNLOCK(inp); return (0); } } /* * copies a "user" presentable address and removes embedded scope, etc. * returns 0 on success, 1 on error */ static uint32_t sctp_fill_user_address(struct sockaddr_storage *ss, struct sockaddr *sa) { #ifdef INET6 struct sockaddr_in6 lsa6; sa = (struct sockaddr *)sctp_recover_scope((struct sockaddr_in6 *)sa, &lsa6); #endif memcpy(ss, sa, sa->sa_len); return (0); } /* * NOTE: assumes addr lock is held */ static size_t sctp_fill_up_addresses_vrf(struct sctp_inpcb *inp, struct sctp_tcb *stcb, size_t limit, struct sockaddr_storage *sas, uint32_t vrf_id) { struct sctp_ifn *sctp_ifn; struct sctp_ifa *sctp_ifa; size_t actual; int loopback_scope; #if defined(INET) int ipv4_local_scope, ipv4_addr_legal; #endif #if defined(INET6) int local_scope, site_scope, ipv6_addr_legal; #endif struct sctp_vrf *vrf; actual = 0; if (limit <= 0) return (actual); if (stcb) { /* Turn on all the appropriate scope */ loopback_scope = stcb->asoc.scope.loopback_scope; #if defined(INET) ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope; ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal; #endif #if defined(INET6) local_scope = stcb->asoc.scope.local_scope; site_scope = stcb->asoc.scope.site_scope; ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal; #endif } else { /* Use generic values for endpoints. */ loopback_scope = 1; #if defined(INET) ipv4_local_scope = 1; #endif #if defined(INET6) local_scope = 1; site_scope = 1; #endif if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { #if defined(INET6) ipv6_addr_legal = 1; #endif #if defined(INET) if (SCTP_IPV6_V6ONLY(inp)) { ipv4_addr_legal = 0; } else { ipv4_addr_legal = 1; } #endif } else { #if defined(INET6) ipv6_addr_legal = 0; #endif #if defined(INET) ipv4_addr_legal = 1; #endif } } vrf = sctp_find_vrf(vrf_id); if (vrf == NULL) { return (0); } if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) { if ((loopback_scope == 0) && SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) { /* Skip loopback if loopback_scope not set */ continue; } LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) { if (stcb) { /* * For the BOUND-ALL case, the list * associated with a TCB is Always * considered a reverse list.. i.e. * it lists addresses that are NOT * part of the association. If this * is one of those we must skip it. */ if (sctp_is_addr_restricted(stcb, sctp_ifa)) { continue; } } switch (sctp_ifa->address.sa.sa_family) { #ifdef INET case AF_INET: if (ipv4_addr_legal) { struct sockaddr_in *sin; sin = &sctp_ifa->address.sin; if (sin->sin_addr.s_addr == 0) { /* * we skip * unspecifed * addresses */ continue; } if (prison_check_ip4(inp->ip_inp.inp.inp_cred, &sin->sin_addr) != 0) { continue; } if ((ipv4_local_scope == 0) && (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) { continue; } #ifdef INET6 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) { in6_sin_2_v4mapsin6(sin, (struct sockaddr_in6 *)sas); ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport; sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(struct sockaddr_in6)); actual += sizeof(struct sockaddr_in6); } else { #endif memcpy(sas, sin, sizeof(*sin)); ((struct sockaddr_in *)sas)->sin_port = inp->sctp_lport; sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(*sin)); actual += sizeof(*sin); #ifdef INET6 } #endif if (actual >= limit) { return (actual); } } else { continue; } break; #endif #ifdef INET6 case AF_INET6: if (ipv6_addr_legal) { struct sockaddr_in6 *sin6; sin6 = &sctp_ifa->address.sin6; if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { /* * we skip * unspecifed * addresses */ continue; } if (prison_check_ip6(inp->ip_inp.inp.inp_cred, &sin6->sin6_addr) != 0) { continue; } if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) { if (local_scope == 0) continue; if (sin6->sin6_scope_id == 0) { if (sa6_recoverscope(sin6) != 0) /* * * bad * * li * nk * * loc * al * * add * re * ss * */ continue; } } if ((site_scope == 0) && (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) { continue; } memcpy(sas, sin6, sizeof(*sin6)); ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport; sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(*sin6)); actual += sizeof(*sin6); if (actual >= limit) { return (actual); } } else { continue; } break; #endif default: /* TSNH */ break; } } } } else { struct sctp_laddr *laddr; LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { if (stcb) { if (sctp_is_addr_restricted(stcb, laddr->ifa)) { continue; } } if (sctp_fill_user_address(sas, &laddr->ifa->address.sa)) continue; switch (laddr->ifa->address.sa.sa_family) { #ifdef INET case AF_INET: ((struct sockaddr_in *)sas)->sin_port = inp->sctp_lport; break; #endif #ifdef INET6 case AF_INET6: ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport; break; #endif default: /* TSNH */ break; } sas = (struct sockaddr_storage *)((caddr_t)sas + laddr->ifa->address.sa.sa_len); actual += laddr->ifa->address.sa.sa_len; if (actual >= limit) { return (actual); } } } return (actual); } static size_t sctp_fill_up_addresses(struct sctp_inpcb *inp, struct sctp_tcb *stcb, size_t limit, struct sockaddr_storage *sas) { size_t size = 0; SCTP_IPI_ADDR_RLOCK(); /* fill up addresses for the endpoint's default vrf */ size = sctp_fill_up_addresses_vrf(inp, stcb, limit, sas, inp->def_vrf_id); SCTP_IPI_ADDR_RUNLOCK(); return (size); } /* * NOTE: assumes addr lock is held */ static int sctp_count_max_addresses_vrf(struct sctp_inpcb *inp, uint32_t vrf_id) { int cnt = 0; struct sctp_vrf *vrf = NULL; /* * In both sub-set bound an bound_all cases we return the MAXIMUM * number of addresses that you COULD get. In reality the sub-set * bound may have an exclusion list for a given TCB OR in the * bound-all case a TCB may NOT include the loopback or other * addresses as well. */ vrf = sctp_find_vrf(vrf_id); if (vrf == NULL) { return (0); } if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { struct sctp_ifn *sctp_ifn; struct sctp_ifa *sctp_ifa; LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) { LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) { /* Count them if they are the right type */ switch (sctp_ifa->address.sa.sa_family) { #ifdef INET case AF_INET: #ifdef INET6 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) cnt += sizeof(struct sockaddr_in6); else cnt += sizeof(struct sockaddr_in); #else cnt += sizeof(struct sockaddr_in); #endif break; #endif #ifdef INET6 case AF_INET6: cnt += sizeof(struct sockaddr_in6); break; #endif default: break; } } } } else { struct sctp_laddr *laddr; LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { switch (laddr->ifa->address.sa.sa_family) { #ifdef INET case AF_INET: #ifdef INET6 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) cnt += sizeof(struct sockaddr_in6); else cnt += sizeof(struct sockaddr_in); #else cnt += sizeof(struct sockaddr_in); #endif break; #endif #ifdef INET6 case AF_INET6: cnt += sizeof(struct sockaddr_in6); break; #endif default: break; } } } return (cnt); } static int sctp_count_max_addresses(struct sctp_inpcb *inp) { int cnt = 0; SCTP_IPI_ADDR_RLOCK(); /* count addresses for the endpoint's default VRF */ cnt = sctp_count_max_addresses_vrf(inp, inp->def_vrf_id); SCTP_IPI_ADDR_RUNLOCK(); return (cnt); } static int sctp_do_connect_x(struct socket *so, struct sctp_inpcb *inp, void *optval, size_t optsize, void *p, int delay) { int error = 0; int creat_lock_on = 0; struct sctp_tcb *stcb = NULL; struct sockaddr *sa; unsigned int num_v6 = 0, num_v4 = 0, *totaddrp, totaddr; uint32_t vrf_id; int bad_addresses = 0; sctp_assoc_t *a_id; SCTPDBG(SCTP_DEBUG_PCB1, "Connectx called\n"); if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) { /* We are already connected AND the TCP model */ SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE); return (EADDRINUSE); } if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) && (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE))) { SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return (EINVAL); } if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { SCTP_INP_RLOCK(inp); stcb = LIST_FIRST(&inp->sctp_asoc_list); SCTP_INP_RUNLOCK(inp); } if (stcb) { SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY); return (EALREADY); } SCTP_INP_INCR_REF(inp); SCTP_ASOC_CREATE_LOCK(inp); creat_lock_on = 1; if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) { SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EFAULT); error = EFAULT; goto out_now; } totaddrp = (unsigned int *)optval; totaddr = *totaddrp; sa = (struct sockaddr *)(totaddrp + 1); stcb = sctp_connectx_helper_find(inp, sa, &totaddr, &num_v4, &num_v6, &error, (unsigned int)(optsize - sizeof(int)), &bad_addresses); if ((stcb != NULL) || bad_addresses) { /* Already have or am bring up an association */ SCTP_ASOC_CREATE_UNLOCK(inp); creat_lock_on = 0; if (stcb) SCTP_TCB_UNLOCK(stcb); if (bad_addresses == 0) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY); error = EALREADY; } goto out_now; } #ifdef INET6 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) && (num_v6 > 0)) { error = EINVAL; goto out_now; } if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && (num_v4 > 0)) { struct in6pcb *inp6; inp6 = (struct in6pcb *)inp; if (SCTP_IPV6_V6ONLY(inp6)) { /* * if IPV6_V6ONLY flag, ignore connections destined * to a v4 addr or v4-mapped addr */ SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; goto out_now; } } #endif /* INET6 */ if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == SCTP_PCB_FLAGS_UNBOUND) { /* Bind a ephemeral port */ error = sctp_inpcb_bind(so, NULL, NULL, p); if (error) { goto out_now; } } /* FIX ME: do we want to pass in a vrf on the connect call? */ vrf_id = inp->def_vrf_id; /* We are GOOD to go */ stcb = sctp_aloc_assoc(inp, sa, &error, 0, vrf_id, inp->sctp_ep.pre_open_stream_count, (struct thread *)p ); if (stcb == NULL) { /* Gak! no memory */ goto out_now; } if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; /* Set the connected flag so we can queue data */ soisconnecting(so); } SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_COOKIE_WAIT); /* move to second address */ switch (sa->sa_family) { #ifdef INET case AF_INET: sa = (struct sockaddr *)((caddr_t)sa + sizeof(struct sockaddr_in)); break; #endif #ifdef INET6 case AF_INET6: sa = (struct sockaddr *)((caddr_t)sa + sizeof(struct sockaddr_in6)); break; #endif default: break; } error = 0; sctp_connectx_helper_add(stcb, sa, (totaddr - 1), &error); /* Fill in the return id */ if (error) { (void)sctp_free_assoc(inp, stcb, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_7); goto out_now; } a_id = (sctp_assoc_t *) optval; *a_id = sctp_get_associd(stcb); /* initialize authentication parameters for the assoc */ sctp_initialize_auth_params(inp, stcb); if (delay) { /* doing delayed connection */ stcb->asoc.delayed_connection = 1; sctp_timer_start(SCTP_TIMER_TYPE_INIT, inp, stcb, stcb->asoc.primary_destination); } else { (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED); } SCTP_TCB_UNLOCK(stcb); if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; /* Set the connected flag so we can queue data */ soisconnecting(so); } out_now: if (creat_lock_on) { SCTP_ASOC_CREATE_UNLOCK(inp); } SCTP_INP_DECR_REF(inp); return (error); } #define SCTP_FIND_STCB(inp, stcb, assoc_id) { \ if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||\ (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { \ SCTP_INP_RLOCK(inp); \ stcb = LIST_FIRST(&inp->sctp_asoc_list); \ if (stcb) { \ SCTP_TCB_LOCK(stcb); \ } \ SCTP_INP_RUNLOCK(inp); \ } else if (assoc_id > SCTP_ALL_ASSOC) { \ stcb = sctp_findassociation_ep_asocid(inp, assoc_id, 1); \ if (stcb == NULL) { \ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT); \ error = ENOENT; \ break; \ } \ } else { \ stcb = NULL; \ } \ } #define SCTP_CHECK_AND_CAST(destp, srcp, type, size) {\ if (size < sizeof(type)) { \ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); \ error = EINVAL; \ break; \ } else { \ destp = (type *)srcp; \ } \ } static int sctp_getopt(struct socket *so, int optname, void *optval, size_t *optsize, void *p) { struct sctp_inpcb *inp = NULL; int error, val = 0; struct sctp_tcb *stcb = NULL; if (optval == NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return (EINVAL); } inp = (struct sctp_inpcb *)so->so_pcb; if (inp == NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return EINVAL; } error = 0; switch (optname) { case SCTP_NODELAY: case SCTP_AUTOCLOSE: case SCTP_EXPLICIT_EOR: case SCTP_AUTO_ASCONF: case SCTP_DISABLE_FRAGMENTS: case SCTP_I_WANT_MAPPED_V4_ADDR: case SCTP_USE_EXT_RCVINFO: SCTP_INP_RLOCK(inp); switch (optname) { case SCTP_DISABLE_FRAGMENTS: val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NO_FRAGMENT); break; case SCTP_I_WANT_MAPPED_V4_ADDR: val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4); break; case SCTP_AUTO_ASCONF: if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { /* only valid for bound all sockets */ val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; goto flags_out; } break; case SCTP_EXPLICIT_EOR: val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR); break; case SCTP_NODELAY: val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NODELAY); break; case SCTP_USE_EXT_RCVINFO: val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO); break; case SCTP_AUTOCLOSE: if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTOCLOSE)) val = TICKS_TO_SEC(inp->sctp_ep.auto_close_time); else val = 0; break; default: SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT); error = ENOPROTOOPT; } /* end switch (sopt->sopt_name) */ if (*optsize < sizeof(val)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } flags_out: SCTP_INP_RUNLOCK(inp); if (error == 0) { /* return the option value */ *(int *)optval = val; *optsize = sizeof(val); } break; case SCTP_GET_PACKET_LOG: { #ifdef SCTP_PACKET_LOGGING uint8_t *target; int ret; SCTP_CHECK_AND_CAST(target, optval, uint8_t, *optsize); ret = sctp_copy_out_packet_log(target, (int)*optsize); *optsize = ret; #else SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP); error = EOPNOTSUPP; #endif break; } case SCTP_REUSE_PORT: { uint32_t *value; if ((inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE)) { /* Can't do this for a 1-m socket */ error = EINVAL; break; } SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize); *value = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE); *optsize = sizeof(uint32_t); break; } case SCTP_PARTIAL_DELIVERY_POINT: { uint32_t *value; SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize); *value = inp->partial_delivery_point; *optsize = sizeof(uint32_t); break; } case SCTP_FRAGMENT_INTERLEAVE: { uint32_t *value; SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize); if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) { if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) { *value = SCTP_FRAG_LEVEL_2; } else { *value = SCTP_FRAG_LEVEL_1; } } else { *value = SCTP_FRAG_LEVEL_0; } *optsize = sizeof(uint32_t); break; } + case SCTP_INTERLEAVING_SUPPORTED: + { + struct sctp_assoc_value *av; + + SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); + SCTP_FIND_STCB(inp, stcb, av->assoc_id); + + if (stcb) { + av->assoc_value = stcb->asoc.idata_supported; + SCTP_TCB_UNLOCK(stcb); + } else { + if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || + (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || + (av->assoc_id == SCTP_FUTURE_ASSOC)) { + SCTP_INP_RLOCK(inp); + if (inp->idata_supported) { + av->assoc_value = 1; + } else { + av->assoc_value = 0; + } + SCTP_INP_RUNLOCK(inp); + } else { + SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); + error = EINVAL; + } + } + if (error == 0) { + *optsize = sizeof(struct sctp_assoc_value); + } + break; + } case SCTP_CMT_ON_OFF: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { av->assoc_value = stcb->asoc.sctp_cmt_on_off; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_RLOCK(inp); av->assoc_value = inp->sctp_cmt_on_off; SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_assoc_value); } break; } case SCTP_PLUGGABLE_CC: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { av->assoc_value = stcb->asoc.congestion_control_module; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_RLOCK(inp); av->assoc_value = inp->sctp_ep.sctp_default_cc_module; SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_assoc_value); } break; } case SCTP_CC_OPTION: { struct sctp_cc_option *cc_opt; SCTP_CHECK_AND_CAST(cc_opt, optval, struct sctp_cc_option, *optsize); SCTP_FIND_STCB(inp, stcb, cc_opt->aid_value.assoc_id); if (stcb == NULL) { error = EINVAL; } else { if (stcb->asoc.cc_functions.sctp_cwnd_socket_option == NULL) { error = ENOTSUP; } else { error = (*stcb->asoc.cc_functions.sctp_cwnd_socket_option) (stcb, 0, cc_opt); *optsize = sizeof(struct sctp_cc_option); } SCTP_TCB_UNLOCK(stcb); } break; } case SCTP_PLUGGABLE_SS: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { av->assoc_value = stcb->asoc.stream_scheduling_module; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_RLOCK(inp); av->assoc_value = inp->sctp_ep.sctp_default_ss_module; SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_assoc_value); } break; } case SCTP_SS_VALUE: { struct sctp_stream_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_stream_value, *optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { if ((av->stream_id >= stcb->asoc.streamoutcnt) || (stcb->asoc.ss_functions.sctp_ss_get_value(stcb, &stcb->asoc, &stcb->asoc.strmout[av->stream_id], &av->stream_value) < 0)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } else { *optsize = sizeof(struct sctp_stream_value); } SCTP_TCB_UNLOCK(stcb); } else { /* * Can't get stream value without * association */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } break; } case SCTP_GET_ADDR_LEN: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); error = EINVAL; #ifdef INET if (av->assoc_value == AF_INET) { av->assoc_value = sizeof(struct sockaddr_in); error = 0; } #endif #ifdef INET6 if (av->assoc_value == AF_INET6) { av->assoc_value = sizeof(struct sockaddr_in6); error = 0; } #endif if (error) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error); } else { *optsize = sizeof(struct sctp_assoc_value); } break; } case SCTP_GET_ASSOC_NUMBER: { uint32_t *value, cnt; SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize); SCTP_INP_RLOCK(inp); if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { /* Can't do this for a 1-1 socket */ error = EINVAL; SCTP_INP_RUNLOCK(inp); break; } cnt = 0; LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { cnt++; } SCTP_INP_RUNLOCK(inp); *value = cnt; *optsize = sizeof(uint32_t); break; } case SCTP_GET_ASSOC_ID_LIST: { struct sctp_assoc_ids *ids; uint32_t at; size_t limit; SCTP_CHECK_AND_CAST(ids, optval, struct sctp_assoc_ids, *optsize); SCTP_INP_RLOCK(inp); if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { /* Can't do this for a 1-1 socket */ error = EINVAL; SCTP_INP_RUNLOCK(inp); break; } at = 0; limit = (*optsize - sizeof(uint32_t)) / sizeof(sctp_assoc_t); LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { if (at < limit) { ids->gaids_assoc_id[at++] = sctp_get_associd(stcb); if (at == 0) { error = EINVAL; SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error); break; } } else { error = EINVAL; SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error); break; } } SCTP_INP_RUNLOCK(inp); if (error == 0) { ids->gaids_number_of_ids = at; *optsize = ((at * sizeof(sctp_assoc_t)) + sizeof(uint32_t)); } break; } case SCTP_CONTEXT: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { av->assoc_value = stcb->asoc.context; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_RLOCK(inp); av->assoc_value = inp->sctp_context; SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_assoc_value); } break; } case SCTP_VRF_ID: { uint32_t *default_vrfid; SCTP_CHECK_AND_CAST(default_vrfid, optval, uint32_t, *optsize); *default_vrfid = inp->def_vrf_id; *optsize = sizeof(uint32_t); break; } case SCTP_GET_ASOC_VRF: { struct sctp_assoc_value *id; SCTP_CHECK_AND_CAST(id, optval, struct sctp_assoc_value, *optsize); SCTP_FIND_STCB(inp, stcb, id->assoc_id); if (stcb == NULL) { error = EINVAL; SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error); } else { id->assoc_value = stcb->asoc.vrf_id; *optsize = sizeof(struct sctp_assoc_value); } break; } case SCTP_GET_VRF_IDS: { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP); error = EOPNOTSUPP; break; } case SCTP_GET_NONCE_VALUES: { struct sctp_get_nonce_values *gnv; SCTP_CHECK_AND_CAST(gnv, optval, struct sctp_get_nonce_values, *optsize); SCTP_FIND_STCB(inp, stcb, gnv->gn_assoc_id); if (stcb) { gnv->gn_peers_tag = stcb->asoc.peer_vtag; gnv->gn_local_tag = stcb->asoc.my_vtag; SCTP_TCB_UNLOCK(stcb); *optsize = sizeof(struct sctp_get_nonce_values); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN); error = ENOTCONN; } break; } case SCTP_DELAYED_SACK: { struct sctp_sack_info *sack; SCTP_CHECK_AND_CAST(sack, optval, struct sctp_sack_info, *optsize); SCTP_FIND_STCB(inp, stcb, sack->sack_assoc_id); if (stcb) { sack->sack_delay = stcb->asoc.delayed_ack; sack->sack_freq = stcb->asoc.sack_freq; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (sack->sack_assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_RLOCK(inp); sack->sack_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]); sack->sack_freq = inp->sctp_ep.sctp_sack_freq; SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_sack_info); } break; } case SCTP_GET_SNDBUF_USE: { struct sctp_sockstat *ss; SCTP_CHECK_AND_CAST(ss, optval, struct sctp_sockstat, *optsize); SCTP_FIND_STCB(inp, stcb, ss->ss_assoc_id); if (stcb) { ss->ss_total_sndbuf = stcb->asoc.total_output_queue_size; ss->ss_total_recv_buf = (stcb->asoc.size_on_reasm_queue + stcb->asoc.size_on_all_streams); SCTP_TCB_UNLOCK(stcb); *optsize = sizeof(struct sctp_sockstat); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN); error = ENOTCONN; } break; } case SCTP_MAX_BURST: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { av->assoc_value = stcb->asoc.max_burst; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_RLOCK(inp); av->assoc_value = inp->sctp_ep.max_burst; SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_assoc_value); } break; } case SCTP_MAXSEG: { struct sctp_assoc_value *av; int ovh; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { av->assoc_value = sctp_get_frag_point(stcb, &stcb->asoc); SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_RLOCK(inp); if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { ovh = SCTP_MED_OVERHEAD; } else { ovh = SCTP_MED_V4_OVERHEAD; } if (inp->sctp_frag_point >= SCTP_DEFAULT_MAXSEGMENT) av->assoc_value = 0; else av->assoc_value = inp->sctp_frag_point - ovh; SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_assoc_value); } break; } case SCTP_GET_STAT_LOG: error = sctp_fill_stat_log(optval, optsize); break; case SCTP_EVENTS: { struct sctp_event_subscribe *events; SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, *optsize); memset(events, 0, sizeof(struct sctp_event_subscribe)); SCTP_INP_RLOCK(inp); if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT)) events->sctp_data_io_event = 1; if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT)) events->sctp_association_event = 1; if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT)) events->sctp_address_event = 1; if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT)) events->sctp_send_failure_event = 1; if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR)) events->sctp_peer_error_event = 1; if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) events->sctp_shutdown_event = 1; if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT)) events->sctp_partial_delivery_event = 1; if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) events->sctp_adaptation_layer_event = 1; if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT)) events->sctp_authentication_event = 1; if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_DRYEVNT)) events->sctp_sender_dry_event = 1; if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT)) events->sctp_stream_reset_event = 1; SCTP_INP_RUNLOCK(inp); *optsize = sizeof(struct sctp_event_subscribe); break; } case SCTP_ADAPTATION_LAYER: { uint32_t *value; SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize); SCTP_INP_RLOCK(inp); *value = inp->sctp_ep.adaptation_layer_indicator; SCTP_INP_RUNLOCK(inp); *optsize = sizeof(uint32_t); break; } case SCTP_SET_INITIAL_DBG_SEQ: { uint32_t *value; SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize); SCTP_INP_RLOCK(inp); *value = inp->sctp_ep.initial_sequence_debug; SCTP_INP_RUNLOCK(inp); *optsize = sizeof(uint32_t); break; } case SCTP_GET_LOCAL_ADDR_SIZE: { uint32_t *value; SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize); SCTP_INP_RLOCK(inp); *value = sctp_count_max_addresses(inp); SCTP_INP_RUNLOCK(inp); *optsize = sizeof(uint32_t); break; } case SCTP_GET_REMOTE_ADDR_SIZE: { uint32_t *value; size_t size; struct sctp_nets *net; SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize); /* FIXME MT: change to sctp_assoc_value? */ SCTP_FIND_STCB(inp, stcb, (sctp_assoc_t) * value); if (stcb) { size = 0; /* Count the sizes */ TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { switch (net->ro._l_addr.sa.sa_family) { #ifdef INET case AF_INET: #ifdef INET6 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) { size += sizeof(struct sockaddr_in6); } else { size += sizeof(struct sockaddr_in); } #else size += sizeof(struct sockaddr_in); #endif break; #endif #ifdef INET6 case AF_INET6: size += sizeof(struct sockaddr_in6); break; #endif default: break; } } SCTP_TCB_UNLOCK(stcb); *value = (uint32_t) size; *optsize = sizeof(uint32_t); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN); error = ENOTCONN; } break; } case SCTP_GET_PEER_ADDRESSES: /* * Get the address information, an array is passed in to * fill up we pack it. */ { size_t cpsz, left; struct sockaddr_storage *sas; struct sctp_nets *net; struct sctp_getaddresses *saddr; SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize); SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id); if (stcb) { left = (*optsize) - sizeof(struct sctp_getaddresses); *optsize = sizeof(struct sctp_getaddresses); sas = (struct sockaddr_storage *)&saddr->addr[0]; TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { switch (net->ro._l_addr.sa.sa_family) { #ifdef INET case AF_INET: #ifdef INET6 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) { cpsz = sizeof(struct sockaddr_in6); } else { cpsz = sizeof(struct sockaddr_in); } #else cpsz = sizeof(struct sockaddr_in); #endif break; #endif #ifdef INET6 case AF_INET6: cpsz = sizeof(struct sockaddr_in6); break; #endif default: cpsz = 0; break; } if (cpsz == 0) { break; } if (left < cpsz) { /* not enough room. */ break; } #if defined(INET) && defined(INET6) if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) && (net->ro._l_addr.sa.sa_family == AF_INET)) { /* Must map the address */ in6_sin_2_v4mapsin6(&net->ro._l_addr.sin, (struct sockaddr_in6 *)sas); } else { memcpy(sas, &net->ro._l_addr, cpsz); } #else memcpy(sas, &net->ro._l_addr, cpsz); #endif ((struct sockaddr_in *)sas)->sin_port = stcb->rport; sas = (struct sockaddr_storage *)((caddr_t)sas + cpsz); left -= cpsz; *optsize += cpsz; } SCTP_TCB_UNLOCK(stcb); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT); error = ENOENT; } break; } case SCTP_GET_LOCAL_ADDRESSES: { size_t limit, actual; struct sockaddr_storage *sas; struct sctp_getaddresses *saddr; SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize); SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id); sas = (struct sockaddr_storage *)&saddr->addr[0]; limit = *optsize - sizeof(sctp_assoc_t); actual = sctp_fill_up_addresses(inp, stcb, limit, sas); if (stcb) { SCTP_TCB_UNLOCK(stcb); } *optsize = sizeof(struct sockaddr_storage) + actual; break; } case SCTP_PEER_ADDR_PARAMS: { struct sctp_paddrparams *paddrp; struct sctp_nets *net; struct sockaddr *addr; #if defined(INET) && defined(INET6) struct sockaddr_in sin_store; #endif SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, *optsize); SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id); #if defined(INET) && defined(INET6) if (paddrp->spp_address.ss_family == AF_INET6) { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)&paddrp->spp_address; if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { in6_sin6_2_sin(&sin_store, sin6); addr = (struct sockaddr *)&sin_store; } else { addr = (struct sockaddr *)&paddrp->spp_address; } } else { addr = (struct sockaddr *)&paddrp->spp_address; } #else addr = (struct sockaddr *)&paddrp->spp_address; #endif if (stcb != NULL) { net = sctp_findnet(stcb, addr); } else { /* * We increment here since * sctp_findassociation_ep_addr() wil do a * decrement if it finds the stcb as long as * the locked tcb (last argument) is NOT a * TCB.. aka NULL. */ net = NULL; SCTP_INP_INCR_REF(inp); stcb = sctp_findassociation_ep_addr(&inp, addr, &net, NULL, NULL); if (stcb == NULL) { SCTP_INP_DECR_REF(inp); } } if ((stcb != NULL) && (net == NULL)) { #ifdef INET if (addr->sa_family == AF_INET) { struct sockaddr_in *sin; sin = (struct sockaddr_in *)addr; if (sin->sin_addr.s_addr != INADDR_ANY) { error = EINVAL; SCTP_TCB_UNLOCK(stcb); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error); break; } } else #endif #ifdef INET6 if (addr->sa_family == AF_INET6) { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)addr; if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { error = EINVAL; SCTP_TCB_UNLOCK(stcb); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error); break; } } else #endif { error = EAFNOSUPPORT; SCTP_TCB_UNLOCK(stcb); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error); break; } } if (stcb != NULL) { /* Applies to the specific association */ paddrp->spp_flags = 0; if (net != NULL) { paddrp->spp_hbinterval = net->heart_beat_delay; paddrp->spp_pathmaxrxt = net->failure_threshold; paddrp->spp_pathmtu = net->mtu; switch (net->ro._l_addr.sa.sa_family) { #ifdef INET case AF_INET: paddrp->spp_pathmtu -= SCTP_MIN_V4_OVERHEAD; break; #endif #ifdef INET6 case AF_INET6: paddrp->spp_pathmtu -= SCTP_MIN_V4_OVERHEAD; break; #endif default: break; } /* get flags for HB */ if (net->dest_state & SCTP_ADDR_NOHB) { paddrp->spp_flags |= SPP_HB_DISABLE; } else { paddrp->spp_flags |= SPP_HB_ENABLE; } /* get flags for PMTU */ if (net->dest_state & SCTP_ADDR_NO_PMTUD) { paddrp->spp_flags |= SPP_PMTUD_DISABLE; } else { paddrp->spp_flags |= SPP_PMTUD_ENABLE; } if (net->dscp & 0x01) { paddrp->spp_dscp = net->dscp & 0xfc; paddrp->spp_flags |= SPP_DSCP; } #ifdef INET6 if ((net->ro._l_addr.sa.sa_family == AF_INET6) && (net->flowlabel & 0x80000000)) { paddrp->spp_ipv6_flowlabel = net->flowlabel & 0x000fffff; paddrp->spp_flags |= SPP_IPV6_FLOWLABEL; } #endif } else { /* * No destination so return default * value */ paddrp->spp_pathmaxrxt = stcb->asoc.def_net_failure; paddrp->spp_pathmtu = 0; if (stcb->asoc.default_dscp & 0x01) { paddrp->spp_dscp = stcb->asoc.default_dscp & 0xfc; paddrp->spp_flags |= SPP_DSCP; } #ifdef INET6 if (stcb->asoc.default_flowlabel & 0x80000000) { paddrp->spp_ipv6_flowlabel = stcb->asoc.default_flowlabel & 0x000fffff; paddrp->spp_flags |= SPP_IPV6_FLOWLABEL; } #endif /* default settings should be these */ if (sctp_stcb_is_feature_on(inp, stcb, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) { paddrp->spp_flags |= SPP_HB_DISABLE; } else { paddrp->spp_flags |= SPP_HB_ENABLE; } if (sctp_stcb_is_feature_on(inp, stcb, SCTP_PCB_FLAGS_DO_NOT_PMTUD)) { paddrp->spp_flags |= SPP_PMTUD_DISABLE; } else { paddrp->spp_flags |= SPP_PMTUD_ENABLE; } paddrp->spp_hbinterval = stcb->asoc.heart_beat_delay; } paddrp->spp_assoc_id = sctp_get_associd(stcb); SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (paddrp->spp_assoc_id == SCTP_FUTURE_ASSOC)) { /* Use endpoint defaults */ SCTP_INP_RLOCK(inp); paddrp->spp_pathmaxrxt = inp->sctp_ep.def_net_failure; paddrp->spp_hbinterval = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]); paddrp->spp_assoc_id = SCTP_FUTURE_ASSOC; /* get inp's default */ if (inp->sctp_ep.default_dscp & 0x01) { paddrp->spp_dscp = inp->sctp_ep.default_dscp & 0xfc; paddrp->spp_flags |= SPP_DSCP; } #ifdef INET6 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && (inp->sctp_ep.default_flowlabel & 0x80000000)) { paddrp->spp_ipv6_flowlabel = inp->sctp_ep.default_flowlabel & 0x000fffff; paddrp->spp_flags |= SPP_IPV6_FLOWLABEL; } #endif /* can't return this */ paddrp->spp_pathmtu = 0; if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) { paddrp->spp_flags |= SPP_HB_ENABLE; } else { paddrp->spp_flags |= SPP_HB_DISABLE; } if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_NOT_PMTUD)) { paddrp->spp_flags |= SPP_PMTUD_ENABLE; } else { paddrp->spp_flags |= SPP_PMTUD_DISABLE; } SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_paddrparams); } break; } case SCTP_GET_PEER_ADDR_INFO: { struct sctp_paddrinfo *paddri; struct sctp_nets *net; struct sockaddr *addr; #if defined(INET) && defined(INET6) struct sockaddr_in sin_store; #endif SCTP_CHECK_AND_CAST(paddri, optval, struct sctp_paddrinfo, *optsize); SCTP_FIND_STCB(inp, stcb, paddri->spinfo_assoc_id); #if defined(INET) && defined(INET6) if (paddri->spinfo_address.ss_family == AF_INET6) { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)&paddri->spinfo_address; if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { in6_sin6_2_sin(&sin_store, sin6); addr = (struct sockaddr *)&sin_store; } else { addr = (struct sockaddr *)&paddri->spinfo_address; } } else { addr = (struct sockaddr *)&paddri->spinfo_address; } #else addr = (struct sockaddr *)&paddri->spinfo_address; #endif if (stcb != NULL) { net = sctp_findnet(stcb, addr); } else { /* * We increment here since * sctp_findassociation_ep_addr() wil do a * decrement if it finds the stcb as long as * the locked tcb (last argument) is NOT a * TCB.. aka NULL. */ net = NULL; SCTP_INP_INCR_REF(inp); stcb = sctp_findassociation_ep_addr(&inp, addr, &net, NULL, NULL); if (stcb == NULL) { SCTP_INP_DECR_REF(inp); } } if ((stcb != NULL) && (net != NULL)) { if (net->dest_state & SCTP_ADDR_UNCONFIRMED) { /* It's unconfirmed */ paddri->spinfo_state = SCTP_UNCONFIRMED; } else if (net->dest_state & SCTP_ADDR_REACHABLE) { /* It's active */ paddri->spinfo_state = SCTP_ACTIVE; } else { /* It's inactive */ paddri->spinfo_state = SCTP_INACTIVE; } paddri->spinfo_cwnd = net->cwnd; paddri->spinfo_srtt = net->lastsa >> SCTP_RTT_SHIFT; paddri->spinfo_rto = net->RTO; paddri->spinfo_assoc_id = sctp_get_associd(stcb); paddri->spinfo_mtu = net->mtu; switch (addr->sa_family) { #if defined(INET) case AF_INET: paddri->spinfo_mtu -= SCTP_MIN_V4_OVERHEAD; break; #endif #if defined(INET6) case AF_INET6: paddri->spinfo_mtu -= SCTP_MIN_OVERHEAD; break; #endif default: break; } SCTP_TCB_UNLOCK(stcb); *optsize = sizeof(struct sctp_paddrinfo); } else { if (stcb != NULL) { SCTP_TCB_UNLOCK(stcb); } SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT); error = ENOENT; } break; } case SCTP_PCB_STATUS: { struct sctp_pcbinfo *spcb; SCTP_CHECK_AND_CAST(spcb, optval, struct sctp_pcbinfo, *optsize); sctp_fill_pcbinfo(spcb); *optsize = sizeof(struct sctp_pcbinfo); break; } case SCTP_STATUS: { struct sctp_nets *net; struct sctp_status *sstat; SCTP_CHECK_AND_CAST(sstat, optval, struct sctp_status, *optsize); SCTP_FIND_STCB(inp, stcb, sstat->sstat_assoc_id); if (stcb == NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; break; } sstat->sstat_state = sctp_map_assoc_state(stcb->asoc.state); sstat->sstat_assoc_id = sctp_get_associd(stcb); sstat->sstat_rwnd = stcb->asoc.peers_rwnd; sstat->sstat_unackdata = stcb->asoc.sent_queue_cnt; /* * We can't include chunks that have been passed to * the socket layer. Only things in queue. */ sstat->sstat_penddata = (stcb->asoc.cnt_on_reasm_queue + stcb->asoc.cnt_on_all_streams); sstat->sstat_instrms = stcb->asoc.streamincnt; sstat->sstat_outstrms = stcb->asoc.streamoutcnt; sstat->sstat_fragmentation_point = sctp_get_frag_point(stcb, &stcb->asoc); memcpy(&sstat->sstat_primary.spinfo_address, &stcb->asoc.primary_destination->ro._l_addr, ((struct sockaddr *)(&stcb->asoc.primary_destination->ro._l_addr))->sa_len); net = stcb->asoc.primary_destination; ((struct sockaddr_in *)&sstat->sstat_primary.spinfo_address)->sin_port = stcb->rport; /* * Again the user can get info from sctp_constants.h * for what the state of the network is. */ if (net->dest_state & SCTP_ADDR_UNCONFIRMED) { /* It's unconfirmed */ sstat->sstat_primary.spinfo_state = SCTP_UNCONFIRMED; } else if (net->dest_state & SCTP_ADDR_REACHABLE) { /* It's active */ sstat->sstat_primary.spinfo_state = SCTP_ACTIVE; } else { /* It's inactive */ sstat->sstat_primary.spinfo_state = SCTP_INACTIVE; } sstat->sstat_primary.spinfo_cwnd = net->cwnd; sstat->sstat_primary.spinfo_srtt = net->lastsa >> SCTP_RTT_SHIFT; sstat->sstat_primary.spinfo_rto = net->RTO; sstat->sstat_primary.spinfo_mtu = net->mtu; switch (stcb->asoc.primary_destination->ro._l_addr.sa.sa_family) { #if defined(INET) case AF_INET: sstat->sstat_primary.spinfo_mtu -= SCTP_MIN_V4_OVERHEAD; break; #endif #if defined(INET6) case AF_INET6: sstat->sstat_primary.spinfo_mtu -= SCTP_MIN_OVERHEAD; break; #endif default: break; } sstat->sstat_primary.spinfo_assoc_id = sctp_get_associd(stcb); SCTP_TCB_UNLOCK(stcb); *optsize = sizeof(struct sctp_status); break; } case SCTP_RTOINFO: { struct sctp_rtoinfo *srto; SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, *optsize); SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id); if (stcb) { srto->srto_initial = stcb->asoc.initial_rto; srto->srto_max = stcb->asoc.maxrto; srto->srto_min = stcb->asoc.minrto; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (srto->srto_assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_RLOCK(inp); srto->srto_initial = inp->sctp_ep.initial_rto; srto->srto_max = inp->sctp_ep.sctp_maxrto; srto->srto_min = inp->sctp_ep.sctp_minrto; SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_rtoinfo); } break; } case SCTP_TIMEOUTS: { struct sctp_timeouts *stimo; SCTP_CHECK_AND_CAST(stimo, optval, struct sctp_timeouts, *optsize); SCTP_FIND_STCB(inp, stcb, stimo->stimo_assoc_id); if (stcb) { stimo->stimo_init = stcb->asoc.timoinit; stimo->stimo_data = stcb->asoc.timodata; stimo->stimo_sack = stcb->asoc.timosack; stimo->stimo_shutdown = stcb->asoc.timoshutdown; stimo->stimo_heartbeat = stcb->asoc.timoheartbeat; stimo->stimo_cookie = stcb->asoc.timocookie; stimo->stimo_shutdownack = stcb->asoc.timoshutdownack; SCTP_TCB_UNLOCK(stcb); *optsize = sizeof(struct sctp_timeouts); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } break; } case SCTP_ASSOCINFO: { struct sctp_assocparams *sasoc; SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, *optsize); SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id); if (stcb) { sasoc->sasoc_cookie_life = TICKS_TO_MSEC(stcb->asoc.cookie_life); sasoc->sasoc_asocmaxrxt = stcb->asoc.max_send_times; sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets; sasoc->sasoc_peer_rwnd = stcb->asoc.peers_rwnd; sasoc->sasoc_local_rwnd = stcb->asoc.my_rwnd; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (sasoc->sasoc_assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_RLOCK(inp); sasoc->sasoc_cookie_life = TICKS_TO_MSEC(inp->sctp_ep.def_cookie_life); sasoc->sasoc_asocmaxrxt = inp->sctp_ep.max_send_times; sasoc->sasoc_number_peer_destinations = 0; sasoc->sasoc_peer_rwnd = 0; sasoc->sasoc_local_rwnd = sbspace(&inp->sctp_socket->so_rcv); SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_assocparams); } break; } case SCTP_DEFAULT_SEND_PARAM: { struct sctp_sndrcvinfo *s_info; SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, *optsize); SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id); if (stcb) { memcpy(s_info, &stcb->asoc.def_send, sizeof(stcb->asoc.def_send)); SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (s_info->sinfo_assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_RLOCK(inp); memcpy(s_info, &inp->def_send, sizeof(inp->def_send)); SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_sndrcvinfo); } break; } case SCTP_INITMSG: { struct sctp_initmsg *sinit; SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, *optsize); SCTP_INP_RLOCK(inp); sinit->sinit_num_ostreams = inp->sctp_ep.pre_open_stream_count; sinit->sinit_max_instreams = inp->sctp_ep.max_open_streams_intome; sinit->sinit_max_attempts = inp->sctp_ep.max_init_times; sinit->sinit_max_init_timeo = inp->sctp_ep.initial_init_rto_max; SCTP_INP_RUNLOCK(inp); *optsize = sizeof(struct sctp_initmsg); break; } case SCTP_PRIMARY_ADDR: /* we allow a "get" operation on this */ { struct sctp_setprim *ssp; SCTP_CHECK_AND_CAST(ssp, optval, struct sctp_setprim, *optsize); SCTP_FIND_STCB(inp, stcb, ssp->ssp_assoc_id); if (stcb) { union sctp_sockstore *addr; addr = &stcb->asoc.primary_destination->ro._l_addr; switch (addr->sa.sa_family) { #ifdef INET case AF_INET: #ifdef INET6 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) { in6_sin_2_v4mapsin6(&addr->sin, (struct sockaddr_in6 *)&ssp->ssp_addr); } else { memcpy(&ssp->ssp_addr, &addr->sin, sizeof(struct sockaddr_in)); } #else memcpy(&ssp->ssp_addr, &addr->sin, sizeof(struct sockaddr_in)); #endif break; #endif #ifdef INET6 case AF_INET6: memcpy(&ssp->ssp_addr, &addr->sin6, sizeof(struct sockaddr_in6)); break; #endif default: break; } SCTP_TCB_UNLOCK(stcb); *optsize = sizeof(struct sctp_setprim); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } break; } case SCTP_HMAC_IDENT: { struct sctp_hmacalgo *shmac; sctp_hmaclist_t *hmaclist; uint32_t size; int i; SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, *optsize); SCTP_INP_RLOCK(inp); hmaclist = inp->sctp_ep.local_hmacs; if (hmaclist == NULL) { /* no HMACs to return */ *optsize = sizeof(*shmac); SCTP_INP_RUNLOCK(inp); break; } /* is there room for all of the hmac ids? */ size = sizeof(*shmac) + (hmaclist->num_algo * sizeof(shmac->shmac_idents[0])); if ((size_t)(*optsize) < size) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; SCTP_INP_RUNLOCK(inp); break; } /* copy in the list */ shmac->shmac_number_of_idents = hmaclist->num_algo; for (i = 0; i < hmaclist->num_algo; i++) { shmac->shmac_idents[i] = hmaclist->hmac[i]; } SCTP_INP_RUNLOCK(inp); *optsize = size; break; } case SCTP_AUTH_ACTIVE_KEY: { struct sctp_authkeyid *scact; SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, *optsize); SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id); if (stcb) { /* get the active key on the assoc */ scact->scact_keynumber = stcb->asoc.authinfo.active_keyid; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (scact->scact_assoc_id == SCTP_FUTURE_ASSOC)) { /* get the endpoint active key */ SCTP_INP_RLOCK(inp); scact->scact_keynumber = inp->sctp_ep.default_keyid; SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_authkeyid); } break; } case SCTP_LOCAL_AUTH_CHUNKS: { struct sctp_authchunks *sac; sctp_auth_chklist_t *chklist = NULL; size_t size = 0; SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize); SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id); if (stcb) { /* get off the assoc */ chklist = stcb->asoc.local_auth_chunks; /* is there enough space? */ size = sctp_auth_get_chklist_size(chklist); if (*optsize < (sizeof(struct sctp_authchunks) + size)) { error = EINVAL; SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error); } else { /* copy in the chunks */ (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks); sac->gauth_number_of_chunks = (uint32_t) size; *optsize = sizeof(struct sctp_authchunks) + size; } SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (sac->gauth_assoc_id == SCTP_FUTURE_ASSOC)) { /* get off the endpoint */ SCTP_INP_RLOCK(inp); chklist = inp->sctp_ep.local_auth_chunks; /* is there enough space? */ size = sctp_auth_get_chklist_size(chklist); if (*optsize < (sizeof(struct sctp_authchunks) + size)) { error = EINVAL; SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error); } else { /* copy in the chunks */ (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks); sac->gauth_number_of_chunks = (uint32_t) size; *optsize = sizeof(struct sctp_authchunks) + size; } SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } break; } case SCTP_PEER_AUTH_CHUNKS: { struct sctp_authchunks *sac; sctp_auth_chklist_t *chklist = NULL; size_t size = 0; SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize); SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id); if (stcb) { /* get off the assoc */ chklist = stcb->asoc.peer_auth_chunks; /* is there enough space? */ size = sctp_auth_get_chklist_size(chklist); if (*optsize < (sizeof(struct sctp_authchunks) + size)) { error = EINVAL; SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error); } else { /* copy in the chunks */ (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks); sac->gauth_number_of_chunks = (uint32_t) size; *optsize = sizeof(struct sctp_authchunks) + size; } SCTP_TCB_UNLOCK(stcb); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT); error = ENOENT; } break; } case SCTP_EVENT: { struct sctp_event *event; uint32_t event_type; SCTP_CHECK_AND_CAST(event, optval, struct sctp_event, *optsize); SCTP_FIND_STCB(inp, stcb, event->se_assoc_id); switch (event->se_type) { case SCTP_ASSOC_CHANGE: event_type = SCTP_PCB_FLAGS_RECVASSOCEVNT; break; case SCTP_PEER_ADDR_CHANGE: event_type = SCTP_PCB_FLAGS_RECVPADDREVNT; break; case SCTP_REMOTE_ERROR: event_type = SCTP_PCB_FLAGS_RECVPEERERR; break; case SCTP_SEND_FAILED: event_type = SCTP_PCB_FLAGS_RECVSENDFAILEVNT; break; case SCTP_SHUTDOWN_EVENT: event_type = SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT; break; case SCTP_ADAPTATION_INDICATION: event_type = SCTP_PCB_FLAGS_ADAPTATIONEVNT; break; case SCTP_PARTIAL_DELIVERY_EVENT: event_type = SCTP_PCB_FLAGS_PDAPIEVNT; break; case SCTP_AUTHENTICATION_EVENT: event_type = SCTP_PCB_FLAGS_AUTHEVNT; break; case SCTP_STREAM_RESET_EVENT: event_type = SCTP_PCB_FLAGS_STREAM_RESETEVNT; break; case SCTP_SENDER_DRY_EVENT: event_type = SCTP_PCB_FLAGS_DRYEVNT; break; case SCTP_NOTIFICATIONS_STOPPED_EVENT: event_type = 0; SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTSUP); error = ENOTSUP; break; case SCTP_ASSOC_RESET_EVENT: event_type = SCTP_PCB_FLAGS_ASSOC_RESETEVNT; break; case SCTP_STREAM_CHANGE_EVENT: event_type = SCTP_PCB_FLAGS_STREAM_CHANGEEVNT; break; case SCTP_SEND_FAILED_EVENT: event_type = SCTP_PCB_FLAGS_RECVNSENDFAILEVNT; break; default: event_type = 0; SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; break; } if (event_type > 0) { if (stcb) { event->se_on = sctp_stcb_is_feature_on(inp, stcb, event_type); SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (event->se_assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_RLOCK(inp); event->se_on = sctp_is_feature_on(inp, event_type); SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } } if (error == 0) { *optsize = sizeof(struct sctp_event); } break; } case SCTP_RECVRCVINFO: { int onoff; if (*optsize < sizeof(int)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } else { SCTP_INP_RLOCK(inp); onoff = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVRCVINFO); SCTP_INP_RUNLOCK(inp); } if (error == 0) { /* return the option value */ *(int *)optval = onoff; *optsize = sizeof(int); } break; } case SCTP_RECVNXTINFO: { int onoff; if (*optsize < sizeof(int)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } else { SCTP_INP_RLOCK(inp); onoff = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO); SCTP_INP_RUNLOCK(inp); } if (error == 0) { /* return the option value */ *(int *)optval = onoff; *optsize = sizeof(int); } break; } case SCTP_DEFAULT_SNDINFO: { struct sctp_sndinfo *info; SCTP_CHECK_AND_CAST(info, optval, struct sctp_sndinfo, *optsize); SCTP_FIND_STCB(inp, stcb, info->snd_assoc_id); if (stcb) { info->snd_sid = stcb->asoc.def_send.sinfo_stream; info->snd_flags = stcb->asoc.def_send.sinfo_flags; info->snd_flags &= 0xfff0; info->snd_ppid = stcb->asoc.def_send.sinfo_ppid; info->snd_context = stcb->asoc.def_send.sinfo_context; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (info->snd_assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_RLOCK(inp); info->snd_sid = inp->def_send.sinfo_stream; info->snd_flags = inp->def_send.sinfo_flags; info->snd_flags &= 0xfff0; info->snd_ppid = inp->def_send.sinfo_ppid; info->snd_context = inp->def_send.sinfo_context; SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_sndinfo); } break; } case SCTP_DEFAULT_PRINFO: { struct sctp_default_prinfo *info; SCTP_CHECK_AND_CAST(info, optval, struct sctp_default_prinfo, *optsize); SCTP_FIND_STCB(inp, stcb, info->pr_assoc_id); if (stcb) { info->pr_policy = PR_SCTP_POLICY(stcb->asoc.def_send.sinfo_flags); info->pr_value = stcb->asoc.def_send.sinfo_timetolive; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (info->pr_assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_RLOCK(inp); info->pr_policy = PR_SCTP_POLICY(inp->def_send.sinfo_flags); info->pr_value = inp->def_send.sinfo_timetolive; SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_default_prinfo); } break; } case SCTP_PEER_ADDR_THLDS: { struct sctp_paddrthlds *thlds; struct sctp_nets *net; struct sockaddr *addr; #if defined(INET) && defined(INET6) struct sockaddr_in sin_store; #endif SCTP_CHECK_AND_CAST(thlds, optval, struct sctp_paddrthlds, *optsize); SCTP_FIND_STCB(inp, stcb, thlds->spt_assoc_id); #if defined(INET) && defined(INET6) if (thlds->spt_address.ss_family == AF_INET6) { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)&thlds->spt_address; if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { in6_sin6_2_sin(&sin_store, sin6); addr = (struct sockaddr *)&sin_store; } else { addr = (struct sockaddr *)&thlds->spt_address; } } else { addr = (struct sockaddr *)&thlds->spt_address; } #else addr = (struct sockaddr *)&thlds->spt_address; #endif if (stcb != NULL) { net = sctp_findnet(stcb, addr); } else { /* * We increment here since * sctp_findassociation_ep_addr() wil do a * decrement if it finds the stcb as long as * the locked tcb (last argument) is NOT a * TCB.. aka NULL. */ net = NULL; SCTP_INP_INCR_REF(inp); stcb = sctp_findassociation_ep_addr(&inp, addr, &net, NULL, NULL); if (stcb == NULL) { SCTP_INP_DECR_REF(inp); } } if ((stcb != NULL) && (net == NULL)) { #ifdef INET if (addr->sa_family == AF_INET) { struct sockaddr_in *sin; sin = (struct sockaddr_in *)addr; if (sin->sin_addr.s_addr != INADDR_ANY) { error = EINVAL; SCTP_TCB_UNLOCK(stcb); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error); break; } } else #endif #ifdef INET6 if (addr->sa_family == AF_INET6) { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)addr; if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { error = EINVAL; SCTP_TCB_UNLOCK(stcb); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error); break; } } else #endif { error = EAFNOSUPPORT; SCTP_TCB_UNLOCK(stcb); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error); break; } } if (stcb != NULL) { if (net != NULL) { thlds->spt_pathmaxrxt = net->failure_threshold; thlds->spt_pathpfthld = net->pf_threshold; } else { thlds->spt_pathmaxrxt = stcb->asoc.def_net_failure; thlds->spt_pathpfthld = stcb->asoc.def_net_pf_threshold; } thlds->spt_assoc_id = sctp_get_associd(stcb); SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (thlds->spt_assoc_id == SCTP_FUTURE_ASSOC)) { /* Use endpoint defaults */ SCTP_INP_RLOCK(inp); thlds->spt_pathmaxrxt = inp->sctp_ep.def_net_failure; thlds->spt_pathpfthld = inp->sctp_ep.def_net_pf_threshold; SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_paddrthlds); } break; } case SCTP_REMOTE_UDP_ENCAPS_PORT: { struct sctp_udpencaps *encaps; struct sctp_nets *net; struct sockaddr *addr; #if defined(INET) && defined(INET6) struct sockaddr_in sin_store; #endif SCTP_CHECK_AND_CAST(encaps, optval, struct sctp_udpencaps, *optsize); SCTP_FIND_STCB(inp, stcb, encaps->sue_assoc_id); #if defined(INET) && defined(INET6) if (encaps->sue_address.ss_family == AF_INET6) { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)&encaps->sue_address; if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { in6_sin6_2_sin(&sin_store, sin6); addr = (struct sockaddr *)&sin_store; } else { addr = (struct sockaddr *)&encaps->sue_address; } } else { addr = (struct sockaddr *)&encaps->sue_address; } #else addr = (struct sockaddr *)&encaps->sue_address; #endif if (stcb) { net = sctp_findnet(stcb, addr); } else { /* * We increment here since * sctp_findassociation_ep_addr() wil do a * decrement if it finds the stcb as long as * the locked tcb (last argument) is NOT a * TCB.. aka NULL. */ net = NULL; SCTP_INP_INCR_REF(inp); stcb = sctp_findassociation_ep_addr(&inp, addr, &net, NULL, NULL); if (stcb == NULL) { SCTP_INP_DECR_REF(inp); } } if ((stcb != NULL) && (net == NULL)) { #ifdef INET if (addr->sa_family == AF_INET) { struct sockaddr_in *sin; sin = (struct sockaddr_in *)addr; if (sin->sin_addr.s_addr != INADDR_ANY) { error = EINVAL; SCTP_TCB_UNLOCK(stcb); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error); break; } } else #endif #ifdef INET6 if (addr->sa_family == AF_INET6) { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)addr; if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { error = EINVAL; SCTP_TCB_UNLOCK(stcb); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error); break; } } else #endif { error = EAFNOSUPPORT; SCTP_TCB_UNLOCK(stcb); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error); break; } } if (stcb != NULL) { if (net) { encaps->sue_port = net->port; } else { encaps->sue_port = stcb->asoc.port; } SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (encaps->sue_assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_RLOCK(inp); encaps->sue_port = inp->sctp_ep.port; SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_udpencaps); } break; } case SCTP_ECN_SUPPORTED: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { av->assoc_value = stcb->asoc.ecn_supported; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_RLOCK(inp); av->assoc_value = inp->ecn_supported; SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_assoc_value); } break; } case SCTP_PR_SUPPORTED: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { av->assoc_value = stcb->asoc.prsctp_supported; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_RLOCK(inp); av->assoc_value = inp->prsctp_supported; SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_assoc_value); } break; } case SCTP_AUTH_SUPPORTED: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { av->assoc_value = stcb->asoc.auth_supported; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_RLOCK(inp); av->assoc_value = inp->auth_supported; SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_assoc_value); } break; } case SCTP_ASCONF_SUPPORTED: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { av->assoc_value = stcb->asoc.asconf_supported; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_RLOCK(inp); av->assoc_value = inp->asconf_supported; SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_assoc_value); } break; } case SCTP_RECONFIG_SUPPORTED: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { av->assoc_value = stcb->asoc.reconfig_supported; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_RLOCK(inp); av->assoc_value = inp->reconfig_supported; SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_assoc_value); } break; } case SCTP_NRSACK_SUPPORTED: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { av->assoc_value = stcb->asoc.nrsack_supported; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_RLOCK(inp); av->assoc_value = inp->nrsack_supported; SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_assoc_value); } break; } case SCTP_PKTDROP_SUPPORTED: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { av->assoc_value = stcb->asoc.pktdrop_supported; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_RLOCK(inp); av->assoc_value = inp->pktdrop_supported; SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_assoc_value); } break; } case SCTP_ENABLE_STREAM_RESET: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { av->assoc_value = (uint32_t) stcb->asoc.local_strreset_support; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_RLOCK(inp); av->assoc_value = (uint32_t) inp->local_strreset_support; SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_assoc_value); } break; } case SCTP_PR_STREAM_STATUS: { struct sctp_prstatus *sprstat; uint16_t sid; uint16_t policy; SCTP_CHECK_AND_CAST(sprstat, optval, struct sctp_prstatus, *optsize); SCTP_FIND_STCB(inp, stcb, sprstat->sprstat_assoc_id); sid = sprstat->sprstat_sid; policy = sprstat->sprstat_policy; #if defined(SCTP_DETAILED_STR_STATS) if ((stcb != NULL) && (sid < stcb->asoc.streamoutcnt) && (policy != SCTP_PR_SCTP_NONE) && ((policy <= SCTP_PR_SCTP_MAX) || (policy == SCTP_PR_SCTP_ALL))) { if (policy == SCTP_PR_SCTP_ALL) { sprstat->sprstat_abandoned_unsent = stcb->asoc.strmout[sid].abandoned_unsent[0]; sprstat->sprstat_abandoned_sent = stcb->asoc.strmout[sid].abandoned_sent[0]; } else { sprstat->sprstat_abandoned_unsent = stcb->asoc.strmout[sid].abandoned_unsent[policy]; sprstat->sprstat_abandoned_sent = stcb->asoc.strmout[sid].abandoned_sent[policy]; } #else if ((stcb != NULL) && (sid < stcb->asoc.streamoutcnt) && (policy == SCTP_PR_SCTP_ALL)) { sprstat->sprstat_abandoned_unsent = stcb->asoc.strmout[sid].abandoned_unsent[0]; sprstat->sprstat_abandoned_sent = stcb->asoc.strmout[sid].abandoned_sent[0]; #endif SCTP_TCB_UNLOCK(stcb); *optsize = sizeof(struct sctp_prstatus); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } break; } case SCTP_PR_ASSOC_STATUS: { struct sctp_prstatus *sprstat; uint16_t policy; SCTP_CHECK_AND_CAST(sprstat, optval, struct sctp_prstatus, *optsize); SCTP_FIND_STCB(inp, stcb, sprstat->sprstat_assoc_id); policy = sprstat->sprstat_policy; if ((stcb != NULL) && (policy != SCTP_PR_SCTP_NONE) && ((policy <= SCTP_PR_SCTP_MAX) || (policy == SCTP_PR_SCTP_ALL))) { if (policy == SCTP_PR_SCTP_ALL) { sprstat->sprstat_abandoned_unsent = stcb->asoc.abandoned_unsent[0]; sprstat->sprstat_abandoned_sent = stcb->asoc.abandoned_sent[0]; } else { sprstat->sprstat_abandoned_unsent = stcb->asoc.abandoned_unsent[policy]; sprstat->sprstat_abandoned_sent = stcb->asoc.abandoned_sent[policy]; } SCTP_TCB_UNLOCK(stcb); *optsize = sizeof(struct sctp_prstatus); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } break; } case SCTP_MAX_CWND: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { av->assoc_value = stcb->asoc.max_cwnd; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_RLOCK(inp); av->assoc_value = inp->max_cwnd; SCTP_INP_RUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } if (error == 0) { *optsize = sizeof(struct sctp_assoc_value); } break; } default: SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT); error = ENOPROTOOPT; break; } /* end switch (sopt->sopt_name) */ if (error) { *optsize = 0; } return (error); } static int sctp_setopt(struct socket *so, int optname, void *optval, size_t optsize, void *p) { int error, set_opt; uint32_t *mopt; struct sctp_tcb *stcb = NULL; struct sctp_inpcb *inp = NULL; uint32_t vrf_id; if (optval == NULL) { SCTP_PRINTF("optval is NULL\n"); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return (EINVAL); } inp = (struct sctp_inpcb *)so->so_pcb; if (inp == NULL) { SCTP_PRINTF("inp is NULL?\n"); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return (EINVAL); } vrf_id = inp->def_vrf_id; error = 0; switch (optname) { case SCTP_NODELAY: case SCTP_AUTOCLOSE: case SCTP_AUTO_ASCONF: case SCTP_EXPLICIT_EOR: case SCTP_DISABLE_FRAGMENTS: case SCTP_USE_EXT_RCVINFO: case SCTP_I_WANT_MAPPED_V4_ADDR: /* copy in the option value */ SCTP_CHECK_AND_CAST(mopt, optval, uint32_t, optsize); set_opt = 0; if (error) break; switch (optname) { case SCTP_DISABLE_FRAGMENTS: set_opt = SCTP_PCB_FLAGS_NO_FRAGMENT; break; case SCTP_AUTO_ASCONF: /* * NOTE: we don't really support this flag */ if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { /* only valid for bound all sockets */ if ((SCTP_BASE_SYSCTL(sctp_auto_asconf) == 0) && (*mopt != 0)) { /* forbidden by admin */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EPERM); return (EPERM); } set_opt = SCTP_PCB_FLAGS_AUTO_ASCONF; } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return (EINVAL); } break; case SCTP_EXPLICIT_EOR: set_opt = SCTP_PCB_FLAGS_EXPLICIT_EOR; break; case SCTP_USE_EXT_RCVINFO: set_opt = SCTP_PCB_FLAGS_EXT_RCVINFO; break; case SCTP_I_WANT_MAPPED_V4_ADDR: if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { set_opt = SCTP_PCB_FLAGS_NEEDS_MAPPED_V4; } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return (EINVAL); } break; case SCTP_NODELAY: set_opt = SCTP_PCB_FLAGS_NODELAY; break; case SCTP_AUTOCLOSE: if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return (EINVAL); } set_opt = SCTP_PCB_FLAGS_AUTOCLOSE; /* * The value is in ticks. Note this does not effect * old associations, only new ones. */ inp->sctp_ep.auto_close_time = SEC_TO_TICKS(*mopt); break; } SCTP_INP_WLOCK(inp); if (*mopt != 0) { sctp_feature_on(inp, set_opt); } else { sctp_feature_off(inp, set_opt); } SCTP_INP_WUNLOCK(inp); break; case SCTP_REUSE_PORT: { SCTP_CHECK_AND_CAST(mopt, optval, uint32_t, optsize); if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) { /* Can't set it after we are bound */ error = EINVAL; break; } if ((inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE)) { /* Can't do this for a 1-m socket */ error = EINVAL; break; } if (optval) sctp_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE); else sctp_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE); break; } case SCTP_PARTIAL_DELIVERY_POINT: { uint32_t *value; SCTP_CHECK_AND_CAST(value, optval, uint32_t, optsize); if (*value > SCTP_SB_LIMIT_RCV(so)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; break; } inp->partial_delivery_point = *value; break; } case SCTP_FRAGMENT_INTERLEAVE: /* not yet until we re-write sctp_recvmsg() */ { uint32_t *level; SCTP_CHECK_AND_CAST(level, optval, uint32_t, optsize); if (*level == SCTP_FRAG_LEVEL_2) { sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE); sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS); } else if (*level == SCTP_FRAG_LEVEL_1) { sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE); sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS); } else if (*level == SCTP_FRAG_LEVEL_0) { sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE); sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; + } + break; + } + case SCTP_INTERLEAVING_SUPPORTED: + { + struct sctp_assoc_value *av; + + SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize); + SCTP_FIND_STCB(inp, stcb, av->assoc_id); + + if (stcb) { + SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); + error = EINVAL; + SCTP_TCB_UNLOCK(stcb); + } else { + if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || + (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || + (av->assoc_id == SCTP_FUTURE_ASSOC)) { + SCTP_INP_WLOCK(inp); + if (av->assoc_value == 0) { + inp->idata_supported = 0; + } else { + if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) && + (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS))) { + inp->idata_supported = 1; + } else { + /* + * Must have Frag + * interleave and + * stream interleave + * on + */ + SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); + error = EINVAL; + } + } + SCTP_INP_WUNLOCK(inp); + } else { + SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); + error = EINVAL; + } } break; } case SCTP_CMT_ON_OFF: if (SCTP_BASE_SYSCTL(sctp_cmt_on_off)) { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize); if (av->assoc_value > SCTP_CMT_MAX) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; break; } SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { stcb->asoc.sctp_cmt_on_off = av->assoc_value; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC) || (av->assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_WLOCK(inp); inp->sctp_cmt_on_off = av->assoc_value; SCTP_INP_WUNLOCK(inp); } if ((av->assoc_id == SCTP_CURRENT_ASSOC) || (av->assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_RLOCK(inp); LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { SCTP_TCB_LOCK(stcb); stcb->asoc.sctp_cmt_on_off = av->assoc_value; SCTP_TCB_UNLOCK(stcb); } SCTP_INP_RUNLOCK(inp); } } } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT); error = ENOPROTOOPT; } break; case SCTP_PLUGGABLE_CC: { struct sctp_assoc_value *av; struct sctp_nets *net; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize); if ((av->assoc_value != SCTP_CC_RFC2581) && (av->assoc_value != SCTP_CC_HSTCP) && (av->assoc_value != SCTP_CC_HTCP) && (av->assoc_value != SCTP_CC_RTCC)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; break; } SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { stcb->asoc.cc_functions = sctp_cc_functions[av->assoc_value]; stcb->asoc.congestion_control_module = av->assoc_value; if (stcb->asoc.cc_functions.sctp_set_initial_cc_param != NULL) { TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { stcb->asoc.cc_functions.sctp_set_initial_cc_param(stcb, net); } } SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC) || (av->assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_WLOCK(inp); inp->sctp_ep.sctp_default_cc_module = av->assoc_value; SCTP_INP_WUNLOCK(inp); } if ((av->assoc_id == SCTP_CURRENT_ASSOC) || (av->assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_RLOCK(inp); LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { SCTP_TCB_LOCK(stcb); stcb->asoc.cc_functions = sctp_cc_functions[av->assoc_value]; stcb->asoc.congestion_control_module = av->assoc_value; if (stcb->asoc.cc_functions.sctp_set_initial_cc_param != NULL) { TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { stcb->asoc.cc_functions.sctp_set_initial_cc_param(stcb, net); } } SCTP_TCB_UNLOCK(stcb); } SCTP_INP_RUNLOCK(inp); } } break; } case SCTP_CC_OPTION: { struct sctp_cc_option *cc_opt; SCTP_CHECK_AND_CAST(cc_opt, optval, struct sctp_cc_option, optsize); SCTP_FIND_STCB(inp, stcb, cc_opt->aid_value.assoc_id); if (stcb == NULL) { if (cc_opt->aid_value.assoc_id == SCTP_CURRENT_ASSOC) { SCTP_INP_RLOCK(inp); LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { SCTP_TCB_LOCK(stcb); if (stcb->asoc.cc_functions.sctp_cwnd_socket_option) { (*stcb->asoc.cc_functions.sctp_cwnd_socket_option) (stcb, 1, cc_opt); } SCTP_TCB_UNLOCK(stcb); } SCTP_INP_RUNLOCK(inp); } else { error = EINVAL; } } else { if (stcb->asoc.cc_functions.sctp_cwnd_socket_option == NULL) { error = ENOTSUP; } else { error = (*stcb->asoc.cc_functions.sctp_cwnd_socket_option) (stcb, 1, cc_opt); } SCTP_TCB_UNLOCK(stcb); } break; } case SCTP_PLUGGABLE_SS: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize); if ((av->assoc_value != SCTP_SS_DEFAULT) && (av->assoc_value != SCTP_SS_ROUND_ROBIN) && (av->assoc_value != SCTP_SS_ROUND_ROBIN_PACKET) && (av->assoc_value != SCTP_SS_PRIORITY) && (av->assoc_value != SCTP_SS_FAIR_BANDWITH) && (av->assoc_value != SCTP_SS_FIRST_COME)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; break; } SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { stcb->asoc.ss_functions.sctp_ss_clear(stcb, &stcb->asoc, 1, 1); stcb->asoc.ss_functions = sctp_ss_functions[av->assoc_value]; stcb->asoc.stream_scheduling_module = av->assoc_value; stcb->asoc.ss_functions.sctp_ss_init(stcb, &stcb->asoc, 1); SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC) || (av->assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_WLOCK(inp); inp->sctp_ep.sctp_default_ss_module = av->assoc_value; SCTP_INP_WUNLOCK(inp); } if ((av->assoc_id == SCTP_CURRENT_ASSOC) || (av->assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_RLOCK(inp); LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { SCTP_TCB_LOCK(stcb); stcb->asoc.ss_functions.sctp_ss_clear(stcb, &stcb->asoc, 1, 1); stcb->asoc.ss_functions = sctp_ss_functions[av->assoc_value]; stcb->asoc.stream_scheduling_module = av->assoc_value; stcb->asoc.ss_functions.sctp_ss_init(stcb, &stcb->asoc, 1); SCTP_TCB_UNLOCK(stcb); } SCTP_INP_RUNLOCK(inp); } } break; } case SCTP_SS_VALUE: { struct sctp_stream_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_stream_value, optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { if ((av->stream_id >= stcb->asoc.streamoutcnt) || (stcb->asoc.ss_functions.sctp_ss_set_value(stcb, &stcb->asoc, &stcb->asoc.strmout[av->stream_id], av->stream_value) < 0)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } SCTP_TCB_UNLOCK(stcb); } else { if (av->assoc_id == SCTP_CURRENT_ASSOC) { SCTP_INP_RLOCK(inp); LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { SCTP_TCB_LOCK(stcb); if (av->stream_id < stcb->asoc.streamoutcnt) { stcb->asoc.ss_functions.sctp_ss_set_value(stcb, &stcb->asoc, &stcb->asoc.strmout[av->stream_id], av->stream_value); } SCTP_TCB_UNLOCK(stcb); } SCTP_INP_RUNLOCK(inp); } else { /* * Can't set stream value without * association */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } break; } case SCTP_CLR_STAT_LOG: SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP); error = EOPNOTSUPP; break; case SCTP_CONTEXT: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { stcb->asoc.context = av->assoc_value; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC) || (av->assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_WLOCK(inp); inp->sctp_context = av->assoc_value; SCTP_INP_WUNLOCK(inp); } if ((av->assoc_id == SCTP_CURRENT_ASSOC) || (av->assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_RLOCK(inp); LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { SCTP_TCB_LOCK(stcb); stcb->asoc.context = av->assoc_value; SCTP_TCB_UNLOCK(stcb); } SCTP_INP_RUNLOCK(inp); } } break; } case SCTP_VRF_ID: { uint32_t *default_vrfid; SCTP_CHECK_AND_CAST(default_vrfid, optval, uint32_t, optsize); if (*default_vrfid > SCTP_MAX_VRF_ID) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; break; } inp->def_vrf_id = *default_vrfid; break; } case SCTP_DEL_VRF_ID: { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP); error = EOPNOTSUPP; break; } case SCTP_ADD_VRF_ID: { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP); error = EOPNOTSUPP; break; } case SCTP_DELAYED_SACK: { struct sctp_sack_info *sack; SCTP_CHECK_AND_CAST(sack, optval, struct sctp_sack_info, optsize); SCTP_FIND_STCB(inp, stcb, sack->sack_assoc_id); if (sack->sack_delay) { if (sack->sack_delay > SCTP_MAX_SACK_DELAY) sack->sack_delay = SCTP_MAX_SACK_DELAY; if (MSEC_TO_TICKS(sack->sack_delay) < 1) { sack->sack_delay = TICKS_TO_MSEC(1); } } if (stcb) { if (sack->sack_delay) { stcb->asoc.delayed_ack = sack->sack_delay; } if (sack->sack_freq) { stcb->asoc.sack_freq = sack->sack_freq; } SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (sack->sack_assoc_id == SCTP_FUTURE_ASSOC) || (sack->sack_assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_WLOCK(inp); if (sack->sack_delay) { inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(sack->sack_delay); } if (sack->sack_freq) { inp->sctp_ep.sctp_sack_freq = sack->sack_freq; } SCTP_INP_WUNLOCK(inp); } if ((sack->sack_assoc_id == SCTP_CURRENT_ASSOC) || (sack->sack_assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_RLOCK(inp); LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { SCTP_TCB_LOCK(stcb); if (sack->sack_delay) { stcb->asoc.delayed_ack = sack->sack_delay; } if (sack->sack_freq) { stcb->asoc.sack_freq = sack->sack_freq; } SCTP_TCB_UNLOCK(stcb); } SCTP_INP_RUNLOCK(inp); } } break; } case SCTP_AUTH_CHUNK: { struct sctp_authchunk *sauth; SCTP_CHECK_AND_CAST(sauth, optval, struct sctp_authchunk, optsize); SCTP_INP_WLOCK(inp); if (sctp_auth_add_chunk(sauth->sauth_chunk, inp->sctp_ep.local_auth_chunks)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } SCTP_INP_WUNLOCK(inp); break; } case SCTP_AUTH_KEY: { struct sctp_authkey *sca; struct sctp_keyhead *shared_keys; sctp_sharedkey_t *shared_key; sctp_key_t *key = NULL; size_t size; SCTP_CHECK_AND_CAST(sca, optval, struct sctp_authkey, optsize); if (sca->sca_keylength == 0) { size = optsize - sizeof(struct sctp_authkey); } else { if (sca->sca_keylength + sizeof(struct sctp_authkey) <= optsize) { size = sca->sca_keylength; } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; break; } } SCTP_FIND_STCB(inp, stcb, sca->sca_assoc_id); if (stcb) { shared_keys = &stcb->asoc.shared_keys; /* clear the cached keys for this key id */ sctp_clear_cachedkeys(stcb, sca->sca_keynumber); /* * create the new shared key and * insert/replace it */ if (size > 0) { key = sctp_set_key(sca->sca_key, (uint32_t) size); if (key == NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM); error = ENOMEM; SCTP_TCB_UNLOCK(stcb); break; } } shared_key = sctp_alloc_sharedkey(); if (shared_key == NULL) { sctp_free_key(key); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM); error = ENOMEM; SCTP_TCB_UNLOCK(stcb); break; } shared_key->key = key; shared_key->keyid = sca->sca_keynumber; error = sctp_insert_sharedkey(shared_keys, shared_key); SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (sca->sca_assoc_id == SCTP_FUTURE_ASSOC) || (sca->sca_assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_WLOCK(inp); shared_keys = &inp->sctp_ep.shared_keys; /* * clear the cached keys on all * assocs for this key id */ sctp_clear_cachedkeys_ep(inp, sca->sca_keynumber); /* * create the new shared key and * insert/replace it */ if (size > 0) { key = sctp_set_key(sca->sca_key, (uint32_t) size); if (key == NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM); error = ENOMEM; SCTP_INP_WUNLOCK(inp); break; } } shared_key = sctp_alloc_sharedkey(); if (shared_key == NULL) { sctp_free_key(key); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM); error = ENOMEM; SCTP_INP_WUNLOCK(inp); break; } shared_key->key = key; shared_key->keyid = sca->sca_keynumber; error = sctp_insert_sharedkey(shared_keys, shared_key); SCTP_INP_WUNLOCK(inp); } if ((sca->sca_assoc_id == SCTP_CURRENT_ASSOC) || (sca->sca_assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_RLOCK(inp); LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { SCTP_TCB_LOCK(stcb); shared_keys = &stcb->asoc.shared_keys; /* * clear the cached keys for * this key id */ sctp_clear_cachedkeys(stcb, sca->sca_keynumber); /* * create the new shared key * and insert/replace it */ if (size > 0) { key = sctp_set_key(sca->sca_key, (uint32_t) size); if (key == NULL) { SCTP_TCB_UNLOCK(stcb); continue; } } shared_key = sctp_alloc_sharedkey(); if (shared_key == NULL) { sctp_free_key(key); SCTP_TCB_UNLOCK(stcb); continue; } shared_key->key = key; shared_key->keyid = sca->sca_keynumber; error = sctp_insert_sharedkey(shared_keys, shared_key); SCTP_TCB_UNLOCK(stcb); } SCTP_INP_RUNLOCK(inp); } } break; } case SCTP_HMAC_IDENT: { struct sctp_hmacalgo *shmac; sctp_hmaclist_t *hmaclist; uint16_t hmacid; uint32_t i; SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, optsize); if ((optsize < sizeof(struct sctp_hmacalgo) + shmac->shmac_number_of_idents * sizeof(uint16_t)) || (shmac->shmac_number_of_idents > 0xffff)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; break; } hmaclist = sctp_alloc_hmaclist((uint16_t) shmac->shmac_number_of_idents); if (hmaclist == NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM); error = ENOMEM; break; } for (i = 0; i < shmac->shmac_number_of_idents; i++) { hmacid = shmac->shmac_idents[i]; if (sctp_auth_add_hmacid(hmaclist, hmacid)) { /* invalid HMACs were found */ ; SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; sctp_free_hmaclist(hmaclist); goto sctp_set_hmac_done; } } for (i = 0; i < hmaclist->num_algo; i++) { if (hmaclist->hmac[i] == SCTP_AUTH_HMAC_ID_SHA1) { /* already in list */ break; } } if (i == hmaclist->num_algo) { /* not found in list */ sctp_free_hmaclist(hmaclist); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; break; } /* set it on the endpoint */ SCTP_INP_WLOCK(inp); if (inp->sctp_ep.local_hmacs) sctp_free_hmaclist(inp->sctp_ep.local_hmacs); inp->sctp_ep.local_hmacs = hmaclist; SCTP_INP_WUNLOCK(inp); sctp_set_hmac_done: break; } case SCTP_AUTH_ACTIVE_KEY: { struct sctp_authkeyid *scact; SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, optsize); SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id); /* set the active key on the right place */ if (stcb) { /* set the active key on the assoc */ if (sctp_auth_setactivekey(stcb, scact->scact_keynumber)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (scact->scact_assoc_id == SCTP_FUTURE_ASSOC) || (scact->scact_assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_WLOCK(inp); if (sctp_auth_setactivekey_ep(inp, scact->scact_keynumber)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } SCTP_INP_WUNLOCK(inp); } if ((scact->scact_assoc_id == SCTP_CURRENT_ASSOC) || (scact->scact_assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_RLOCK(inp); LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { SCTP_TCB_LOCK(stcb); sctp_auth_setactivekey(stcb, scact->scact_keynumber); SCTP_TCB_UNLOCK(stcb); } SCTP_INP_RUNLOCK(inp); } } break; } case SCTP_AUTH_DELETE_KEY: { struct sctp_authkeyid *scdel; SCTP_CHECK_AND_CAST(scdel, optval, struct sctp_authkeyid, optsize); SCTP_FIND_STCB(inp, stcb, scdel->scact_assoc_id); /* delete the key from the right place */ if (stcb) { if (sctp_delete_sharedkey(stcb, scdel->scact_keynumber)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (scdel->scact_assoc_id == SCTP_FUTURE_ASSOC) || (scdel->scact_assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_WLOCK(inp); if (sctp_delete_sharedkey_ep(inp, scdel->scact_keynumber)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } SCTP_INP_WUNLOCK(inp); } if ((scdel->scact_assoc_id == SCTP_CURRENT_ASSOC) || (scdel->scact_assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_RLOCK(inp); LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { SCTP_TCB_LOCK(stcb); sctp_delete_sharedkey(stcb, scdel->scact_keynumber); SCTP_TCB_UNLOCK(stcb); } SCTP_INP_RUNLOCK(inp); } } break; } case SCTP_AUTH_DEACTIVATE_KEY: { struct sctp_authkeyid *keyid; SCTP_CHECK_AND_CAST(keyid, optval, struct sctp_authkeyid, optsize); SCTP_FIND_STCB(inp, stcb, keyid->scact_assoc_id); /* deactivate the key from the right place */ if (stcb) { if (sctp_deact_sharedkey(stcb, keyid->scact_keynumber)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (keyid->scact_assoc_id == SCTP_FUTURE_ASSOC) || (keyid->scact_assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_WLOCK(inp); if (sctp_deact_sharedkey_ep(inp, keyid->scact_keynumber)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } SCTP_INP_WUNLOCK(inp); } if ((keyid->scact_assoc_id == SCTP_CURRENT_ASSOC) || (keyid->scact_assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_RLOCK(inp); LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { SCTP_TCB_LOCK(stcb); sctp_deact_sharedkey(stcb, keyid->scact_keynumber); SCTP_TCB_UNLOCK(stcb); } SCTP_INP_RUNLOCK(inp); } } break; } case SCTP_ENABLE_STREAM_RESET: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize); if (av->assoc_value & (~SCTP_ENABLE_VALUE_MASK)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; break; } SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { stcb->asoc.local_strreset_support = (uint8_t) av->assoc_value; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC) || (av->assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_WLOCK(inp); inp->local_strreset_support = (uint8_t) av->assoc_value; SCTP_INP_WUNLOCK(inp); } if ((av->assoc_id == SCTP_CURRENT_ASSOC) || (av->assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_RLOCK(inp); LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { SCTP_TCB_LOCK(stcb); stcb->asoc.local_strreset_support = (uint8_t) av->assoc_value; SCTP_TCB_UNLOCK(stcb); } SCTP_INP_RUNLOCK(inp); } } break; } case SCTP_RESET_STREAMS: { struct sctp_reset_streams *strrst; int i, send_out = 0; int send_in = 0; SCTP_CHECK_AND_CAST(strrst, optval, struct sctp_reset_streams, optsize); SCTP_FIND_STCB(inp, stcb, strrst->srs_assoc_id); if (stcb == NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT); error = ENOENT; break; } if (stcb->asoc.reconfig_supported == 0) { /* * Peer does not support the chunk type. */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP); error = EOPNOTSUPP; SCTP_TCB_UNLOCK(stcb); break; } if (sizeof(struct sctp_reset_streams) + strrst->srs_number_streams * sizeof(uint16_t) > optsize) { error = EINVAL; SCTP_TCB_UNLOCK(stcb); break; } if (strrst->srs_flags & SCTP_STREAM_RESET_INCOMING) { send_in = 1; if (stcb->asoc.stream_reset_outstanding) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY); error = EALREADY; SCTP_TCB_UNLOCK(stcb); break; } } if (strrst->srs_flags & SCTP_STREAM_RESET_OUTGOING) { send_out = 1; } if ((strrst->srs_number_streams > SCTP_MAX_STREAMS_AT_ONCE_RESET) && send_in) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM); error = ENOMEM; SCTP_TCB_UNLOCK(stcb); break; } if ((send_in == 0) && (send_out == 0)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; SCTP_TCB_UNLOCK(stcb); break; } for (i = 0; i < strrst->srs_number_streams; i++) { if ((send_in) && (strrst->srs_stream_list[i] > stcb->asoc.streamincnt)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; break; } if ((send_out) && (strrst->srs_stream_list[i] > stcb->asoc.streamoutcnt)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; break; } } if (error) { SCTP_TCB_UNLOCK(stcb); break; } if (send_out) { int cnt; uint16_t strm; if (strrst->srs_number_streams) { for (i = 0, cnt = 0; i < strrst->srs_number_streams; i++) { strm = strrst->srs_stream_list[i]; if (stcb->asoc.strmout[strm].state == SCTP_STREAM_OPEN) { stcb->asoc.strmout[strm].state = SCTP_STREAM_RESET_PENDING; cnt++; } } } else { /* Its all */ for (i = 0, cnt = 0; i < stcb->asoc.streamoutcnt; i++) { if (stcb->asoc.strmout[i].state == SCTP_STREAM_OPEN) { stcb->asoc.strmout[i].state = SCTP_STREAM_RESET_PENDING; cnt++; } } } } if (send_in) { error = sctp_send_str_reset_req(stcb, strrst->srs_number_streams, strrst->srs_stream_list, send_in, 0, 0, 0, 0, 0); } else { error = sctp_send_stream_reset_out_if_possible(stcb, SCTP_SO_LOCKED); } if (error == 0) { sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_REQ, SCTP_SO_LOCKED); } else { /* * For outgoing streams don't report any * problems in sending the request to the * application. XXX: Double check resetting * incoming streams. */ error = 0; } SCTP_TCB_UNLOCK(stcb); break; } case SCTP_ADD_STREAMS: { struct sctp_add_streams *stradd; uint8_t addstream = 0; uint16_t add_o_strmcnt = 0; uint16_t add_i_strmcnt = 0; SCTP_CHECK_AND_CAST(stradd, optval, struct sctp_add_streams, optsize); SCTP_FIND_STCB(inp, stcb, stradd->sas_assoc_id); if (stcb == NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT); error = ENOENT; break; } if (stcb->asoc.reconfig_supported == 0) { /* * Peer does not support the chunk type. */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP); error = EOPNOTSUPP; SCTP_TCB_UNLOCK(stcb); break; } if (stcb->asoc.stream_reset_outstanding) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY); error = EALREADY; SCTP_TCB_UNLOCK(stcb); break; } if ((stradd->sas_outstrms == 0) && (stradd->sas_instrms == 0)) { error = EINVAL; goto skip_stuff; } if (stradd->sas_outstrms) { addstream = 1; /* We allocate here */ add_o_strmcnt = stradd->sas_outstrms; if ((((int)add_o_strmcnt) + ((int)stcb->asoc.streamoutcnt)) > 0x0000ffff) { /* You can't have more than 64k */ error = EINVAL; goto skip_stuff; } } if (stradd->sas_instrms) { int cnt; addstream |= 2; /* * We allocate inside * sctp_send_str_reset_req() */ add_i_strmcnt = stradd->sas_instrms; cnt = add_i_strmcnt; cnt += stcb->asoc.streamincnt; if (cnt > 0x0000ffff) { /* You can't have more than 64k */ error = EINVAL; goto skip_stuff; } if (cnt > (int)stcb->asoc.max_inbound_streams) { /* More than you are allowed */ error = EINVAL; goto skip_stuff; } } error = sctp_send_str_reset_req(stcb, 0, NULL, 0, 0, addstream, add_o_strmcnt, add_i_strmcnt, 0); sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_REQ, SCTP_SO_LOCKED); skip_stuff: SCTP_TCB_UNLOCK(stcb); break; } case SCTP_RESET_ASSOC: { int i; uint32_t *value; SCTP_CHECK_AND_CAST(value, optval, uint32_t, optsize); SCTP_FIND_STCB(inp, stcb, (sctp_assoc_t) * value); if (stcb == NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT); error = ENOENT; break; } if (stcb->asoc.reconfig_supported == 0) { /* * Peer does not support the chunk type. */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP); error = EOPNOTSUPP; SCTP_TCB_UNLOCK(stcb); break; } if (stcb->asoc.stream_reset_outstanding) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY); error = EALREADY; SCTP_TCB_UNLOCK(stcb); break; } /* * Is there any data pending in the send or sent * queues? */ if (!TAILQ_EMPTY(&stcb->asoc.send_queue) || !TAILQ_EMPTY(&stcb->asoc.sent_queue)) { busy_out: error = EBUSY; SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error); SCTP_TCB_UNLOCK(stcb); break; } /* Do any streams have data queued? */ for (i = 0; i < stcb->asoc.streamoutcnt; i++) { if (!TAILQ_EMPTY(&stcb->asoc.strmout[i].outqueue)) { goto busy_out; } } error = sctp_send_str_reset_req(stcb, 0, NULL, 0, 1, 0, 0, 0, 0); sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_REQ, SCTP_SO_LOCKED); SCTP_TCB_UNLOCK(stcb); break; } case SCTP_CONNECT_X: if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; break; } error = sctp_do_connect_x(so, inp, optval, optsize, p, 0); break; case SCTP_CONNECT_X_DELAYED: if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; break; } error = sctp_do_connect_x(so, inp, optval, optsize, p, 1); break; case SCTP_CONNECT_X_COMPLETE: { struct sockaddr *sa; /* FIXME MT: check correct? */ SCTP_CHECK_AND_CAST(sa, optval, struct sockaddr, optsize); /* find tcb */ if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { SCTP_INP_RLOCK(inp); stcb = LIST_FIRST(&inp->sctp_asoc_list); if (stcb) { SCTP_TCB_LOCK(stcb); } SCTP_INP_RUNLOCK(inp); } else { /* * We increment here since * sctp_findassociation_ep_addr() wil do a * decrement if it finds the stcb as long as * the locked tcb (last argument) is NOT a * TCB.. aka NULL. */ SCTP_INP_INCR_REF(inp); stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL); if (stcb == NULL) { SCTP_INP_DECR_REF(inp); } } if (stcb == NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT); error = ENOENT; break; } if (stcb->asoc.delayed_connection == 1) { stcb->asoc.delayed_connection = 0; (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); sctp_timer_stop(SCTP_TIMER_TYPE_INIT, inp, stcb, stcb->asoc.primary_destination, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_8); sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED); } else { /* * already expired or did not use delayed * connectx */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY); error = EALREADY; } SCTP_TCB_UNLOCK(stcb); break; } case SCTP_MAX_BURST: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { stcb->asoc.max_burst = av->assoc_value; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC) || (av->assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_WLOCK(inp); inp->sctp_ep.max_burst = av->assoc_value; SCTP_INP_WUNLOCK(inp); } if ((av->assoc_id == SCTP_CURRENT_ASSOC) || (av->assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_RLOCK(inp); LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { SCTP_TCB_LOCK(stcb); stcb->asoc.max_burst = av->assoc_value; SCTP_TCB_UNLOCK(stcb); } SCTP_INP_RUNLOCK(inp); } } break; } case SCTP_MAXSEG: { struct sctp_assoc_value *av; int ovh; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { ovh = SCTP_MED_OVERHEAD; } else { ovh = SCTP_MED_V4_OVERHEAD; } if (stcb) { if (av->assoc_value) { stcb->asoc.sctp_frag_point = (av->assoc_value + ovh); } else { stcb->asoc.sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT; } SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_WLOCK(inp); /* * FIXME MT: I think this is not in * tune with the API ID */ if (av->assoc_value) { inp->sctp_frag_point = (av->assoc_value + ovh); } else { inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT; } SCTP_INP_WUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } break; } case SCTP_EVENTS: { struct sctp_event_subscribe *events; SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, optsize); SCTP_INP_WLOCK(inp); if (events->sctp_data_io_event) { sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT); } else { sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT); } if (events->sctp_association_event) { sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT); } else { sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT); } if (events->sctp_address_event) { sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT); } else { sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPADDREVNT); } if (events->sctp_send_failure_event) { sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT); } else { sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT); } if (events->sctp_peer_error_event) { sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR); } else { sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPEERERR); } if (events->sctp_shutdown_event) { sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT); } else { sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT); } if (events->sctp_partial_delivery_event) { sctp_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT); } else { sctp_feature_off(inp, SCTP_PCB_FLAGS_PDAPIEVNT); } if (events->sctp_adaptation_layer_event) { sctp_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT); } else { sctp_feature_off(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT); } if (events->sctp_authentication_event) { sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT); } else { sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTHEVNT); } if (events->sctp_sender_dry_event) { sctp_feature_on(inp, SCTP_PCB_FLAGS_DRYEVNT); } else { sctp_feature_off(inp, SCTP_PCB_FLAGS_DRYEVNT); } if (events->sctp_stream_reset_event) { sctp_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT); } else { sctp_feature_off(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT); } SCTP_INP_WUNLOCK(inp); SCTP_INP_RLOCK(inp); LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { SCTP_TCB_LOCK(stcb); if (events->sctp_association_event) { sctp_stcb_feature_on(inp, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT); } else { sctp_stcb_feature_off(inp, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT); } if (events->sctp_address_event) { sctp_stcb_feature_on(inp, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT); } else { sctp_stcb_feature_off(inp, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT); } if (events->sctp_send_failure_event) { sctp_stcb_feature_on(inp, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT); } else { sctp_stcb_feature_off(inp, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT); } if (events->sctp_peer_error_event) { sctp_stcb_feature_on(inp, stcb, SCTP_PCB_FLAGS_RECVPEERERR); } else { sctp_stcb_feature_off(inp, stcb, SCTP_PCB_FLAGS_RECVPEERERR); } if (events->sctp_shutdown_event) { sctp_stcb_feature_on(inp, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT); } else { sctp_stcb_feature_off(inp, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT); } if (events->sctp_partial_delivery_event) { sctp_stcb_feature_on(inp, stcb, SCTP_PCB_FLAGS_PDAPIEVNT); } else { sctp_stcb_feature_off(inp, stcb, SCTP_PCB_FLAGS_PDAPIEVNT); } if (events->sctp_adaptation_layer_event) { sctp_stcb_feature_on(inp, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT); } else { sctp_stcb_feature_off(inp, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT); } if (events->sctp_authentication_event) { sctp_stcb_feature_on(inp, stcb, SCTP_PCB_FLAGS_AUTHEVNT); } else { sctp_stcb_feature_off(inp, stcb, SCTP_PCB_FLAGS_AUTHEVNT); } if (events->sctp_sender_dry_event) { sctp_stcb_feature_on(inp, stcb, SCTP_PCB_FLAGS_DRYEVNT); } else { sctp_stcb_feature_off(inp, stcb, SCTP_PCB_FLAGS_DRYEVNT); } if (events->sctp_stream_reset_event) { sctp_stcb_feature_on(inp, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT); } else { sctp_stcb_feature_off(inp, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT); } SCTP_TCB_UNLOCK(stcb); } /* * Send up the sender dry event only for 1-to-1 * style sockets. */ if (events->sctp_sender_dry_event) { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { stcb = LIST_FIRST(&inp->sctp_asoc_list); if (stcb) { SCTP_TCB_LOCK(stcb); if (TAILQ_EMPTY(&stcb->asoc.send_queue) && TAILQ_EMPTY(&stcb->asoc.sent_queue) && (stcb->asoc.stream_queue_cnt == 0)) { sctp_ulp_notify(SCTP_NOTIFY_SENDER_DRY, stcb, 0, NULL, SCTP_SO_LOCKED); } SCTP_TCB_UNLOCK(stcb); } } } SCTP_INP_RUNLOCK(inp); break; } case SCTP_ADAPTATION_LAYER: { struct sctp_setadaptation *adap_bits; SCTP_CHECK_AND_CAST(adap_bits, optval, struct sctp_setadaptation, optsize); SCTP_INP_WLOCK(inp); inp->sctp_ep.adaptation_layer_indicator = adap_bits->ssb_adaptation_ind; inp->sctp_ep.adaptation_layer_indicator_provided = 1; SCTP_INP_WUNLOCK(inp); break; } #ifdef SCTP_DEBUG case SCTP_SET_INITIAL_DBG_SEQ: { uint32_t *vvv; SCTP_CHECK_AND_CAST(vvv, optval, uint32_t, optsize); SCTP_INP_WLOCK(inp); inp->sctp_ep.initial_sequence_debug = *vvv; SCTP_INP_WUNLOCK(inp); break; } #endif case SCTP_DEFAULT_SEND_PARAM: { struct sctp_sndrcvinfo *s_info; SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, optsize); SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id); if (stcb) { if (s_info->sinfo_stream < stcb->asoc.streamoutcnt) { memcpy(&stcb->asoc.def_send, s_info, min(optsize, sizeof(stcb->asoc.def_send))); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (s_info->sinfo_assoc_id == SCTP_FUTURE_ASSOC) || (s_info->sinfo_assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_WLOCK(inp); memcpy(&inp->def_send, s_info, min(optsize, sizeof(inp->def_send))); SCTP_INP_WUNLOCK(inp); } if ((s_info->sinfo_assoc_id == SCTP_CURRENT_ASSOC) || (s_info->sinfo_assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_RLOCK(inp); LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { SCTP_TCB_LOCK(stcb); if (s_info->sinfo_stream < stcb->asoc.streamoutcnt) { memcpy(&stcb->asoc.def_send, s_info, min(optsize, sizeof(stcb->asoc.def_send))); } SCTP_TCB_UNLOCK(stcb); } SCTP_INP_RUNLOCK(inp); } } break; } case SCTP_PEER_ADDR_PARAMS: { struct sctp_paddrparams *paddrp; struct sctp_nets *net; struct sockaddr *addr; #if defined(INET) && defined(INET6) struct sockaddr_in sin_store; #endif SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, optsize); SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id); #if defined(INET) && defined(INET6) if (paddrp->spp_address.ss_family == AF_INET6) { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)&paddrp->spp_address; if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { in6_sin6_2_sin(&sin_store, sin6); addr = (struct sockaddr *)&sin_store; } else { addr = (struct sockaddr *)&paddrp->spp_address; } } else { addr = (struct sockaddr *)&paddrp->spp_address; } #else addr = (struct sockaddr *)&paddrp->spp_address; #endif if (stcb != NULL) { net = sctp_findnet(stcb, addr); } else { /* * We increment here since * sctp_findassociation_ep_addr() wil do a * decrement if it finds the stcb as long as * the locked tcb (last argument) is NOT a * TCB.. aka NULL. */ net = NULL; SCTP_INP_INCR_REF(inp); stcb = sctp_findassociation_ep_addr(&inp, addr, &net, NULL, NULL); if (stcb == NULL) { SCTP_INP_DECR_REF(inp); } } if ((stcb != NULL) && (net == NULL)) { #ifdef INET if (addr->sa_family == AF_INET) { struct sockaddr_in *sin; sin = (struct sockaddr_in *)addr; if (sin->sin_addr.s_addr != INADDR_ANY) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); SCTP_TCB_UNLOCK(stcb); error = EINVAL; break; } } else #endif #ifdef INET6 if (addr->sa_family == AF_INET6) { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)addr; if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); SCTP_TCB_UNLOCK(stcb); error = EINVAL; break; } } else #endif { error = EAFNOSUPPORT; SCTP_TCB_UNLOCK(stcb); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error); break; } } /* sanity checks */ if ((paddrp->spp_flags & SPP_HB_ENABLE) && (paddrp->spp_flags & SPP_HB_DISABLE)) { if (stcb) SCTP_TCB_UNLOCK(stcb); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return (EINVAL); } if ((paddrp->spp_flags & SPP_PMTUD_ENABLE) && (paddrp->spp_flags & SPP_PMTUD_DISABLE)) { if (stcb) SCTP_TCB_UNLOCK(stcb); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return (EINVAL); } if (stcb != NULL) { /************************TCB SPECIFIC SET ******************/ if (net != NULL) { /************************NET SPECIFIC SET ******************/ if (paddrp->spp_flags & SPP_HB_DISABLE) { if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) && !(net->dest_state & SCTP_ADDR_NOHB)) { sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_9); } net->dest_state |= SCTP_ADDR_NOHB; } if (paddrp->spp_flags & SPP_HB_ENABLE) { if (paddrp->spp_hbinterval) { net->heart_beat_delay = paddrp->spp_hbinterval; } else if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO) { net->heart_beat_delay = 0; } sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10); sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net); net->dest_state &= ~SCTP_ADDR_NOHB; } if (paddrp->spp_flags & SPP_HB_DEMAND) { /* on demand HB */ sctp_send_hb(stcb, net, SCTP_SO_LOCKED); sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SOCKOPT, SCTP_SO_LOCKED); sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net); } if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && (paddrp->spp_pathmtu >= SCTP_SMALLEST_PMTU)) { if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) { sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_11); } net->dest_state |= SCTP_ADDR_NO_PMTUD; net->mtu = paddrp->spp_pathmtu; switch (net->ro._l_addr.sa.sa_family) { #ifdef INET case AF_INET: net->mtu += SCTP_MIN_V4_OVERHEAD; break; #endif #ifdef INET6 case AF_INET6: net->mtu += SCTP_MIN_OVERHEAD; break; #endif default: break; } if (net->mtu < stcb->asoc.smallest_mtu) { sctp_pathmtu_adjustment(stcb, net->mtu); } } if (paddrp->spp_flags & SPP_PMTUD_ENABLE) { if (!SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) { sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net); } net->dest_state &= ~SCTP_ADDR_NO_PMTUD; } if (paddrp->spp_pathmaxrxt) { if (net->dest_state & SCTP_ADDR_PF) { if (net->error_count > paddrp->spp_pathmaxrxt) { net->dest_state &= ~SCTP_ADDR_PF; } } else { if ((net->error_count <= paddrp->spp_pathmaxrxt) && (net->error_count > net->pf_threshold)) { net->dest_state |= SCTP_ADDR_PF; sctp_send_hb(stcb, net, SCTP_SO_LOCKED); sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep, stcb, net, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_12); sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep, stcb, net); } } if (net->dest_state & SCTP_ADDR_REACHABLE) { if (net->error_count > paddrp->spp_pathmaxrxt) { net->dest_state &= ~SCTP_ADDR_REACHABLE; sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN, stcb, 0, net, SCTP_SO_LOCKED); } } else { if (net->error_count <= paddrp->spp_pathmaxrxt) { net->dest_state |= SCTP_ADDR_REACHABLE; sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_UP, stcb, 0, net, SCTP_SO_LOCKED); } } net->failure_threshold = paddrp->spp_pathmaxrxt; } if (paddrp->spp_flags & SPP_DSCP) { net->dscp = paddrp->spp_dscp & 0xfc; net->dscp |= 0x01; } #ifdef INET6 if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL) { if (net->ro._l_addr.sa.sa_family == AF_INET6) { net->flowlabel = paddrp->spp_ipv6_flowlabel & 0x000fffff; net->flowlabel |= 0x80000000; } } #endif } else { /************************ASSOC ONLY -- NO NET SPECIFIC SET ******************/ if (paddrp->spp_pathmaxrxt != 0) { stcb->asoc.def_net_failure = paddrp->spp_pathmaxrxt; TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { if (net->dest_state & SCTP_ADDR_PF) { if (net->error_count > paddrp->spp_pathmaxrxt) { net->dest_state &= ~SCTP_ADDR_PF; } } else { if ((net->error_count <= paddrp->spp_pathmaxrxt) && (net->error_count > net->pf_threshold)) { net->dest_state |= SCTP_ADDR_PF; sctp_send_hb(stcb, net, SCTP_SO_LOCKED); sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep, stcb, net, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_13); sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep, stcb, net); } } if (net->dest_state & SCTP_ADDR_REACHABLE) { if (net->error_count > paddrp->spp_pathmaxrxt) { net->dest_state &= ~SCTP_ADDR_REACHABLE; sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN, stcb, 0, net, SCTP_SO_LOCKED); } } else { if (net->error_count <= paddrp->spp_pathmaxrxt) { net->dest_state |= SCTP_ADDR_REACHABLE; sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_UP, stcb, 0, net, SCTP_SO_LOCKED); } } net->failure_threshold = paddrp->spp_pathmaxrxt; } } if (paddrp->spp_flags & SPP_HB_ENABLE) { if (paddrp->spp_hbinterval != 0) { stcb->asoc.heart_beat_delay = paddrp->spp_hbinterval; } else if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO) { stcb->asoc.heart_beat_delay = 0; } /* Turn back on the timer */ TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { if (paddrp->spp_hbinterval != 0) { net->heart_beat_delay = paddrp->spp_hbinterval; } else if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO) { net->heart_beat_delay = 0; } if (net->dest_state & SCTP_ADDR_NOHB) { net->dest_state &= ~SCTP_ADDR_NOHB; } sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_14); sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net); } sctp_stcb_feature_off(inp, stcb, SCTP_PCB_FLAGS_DONOT_HEARTBEAT); } if (paddrp->spp_flags & SPP_HB_DISABLE) { TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { if (!(net->dest_state & SCTP_ADDR_NOHB)) { net->dest_state |= SCTP_ADDR_NOHB; if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED)) { sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_15); } } } sctp_stcb_feature_on(inp, stcb, SCTP_PCB_FLAGS_DONOT_HEARTBEAT); } if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && (paddrp->spp_pathmtu >= SCTP_SMALLEST_PMTU)) { TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) { sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_16); } net->dest_state |= SCTP_ADDR_NO_PMTUD; net->mtu = paddrp->spp_pathmtu; switch (net->ro._l_addr.sa.sa_family) { #ifdef INET case AF_INET: net->mtu += SCTP_MIN_V4_OVERHEAD; break; #endif #ifdef INET6 case AF_INET6: net->mtu += SCTP_MIN_OVERHEAD; break; #endif default: break; } if (net->mtu < stcb->asoc.smallest_mtu) { sctp_pathmtu_adjustment(stcb, net->mtu); } } sctp_stcb_feature_on(inp, stcb, SCTP_PCB_FLAGS_DO_NOT_PMTUD); } if (paddrp->spp_flags & SPP_PMTUD_ENABLE) { TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { if (!SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) { sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net); } net->dest_state &= ~SCTP_ADDR_NO_PMTUD; } sctp_stcb_feature_off(inp, stcb, SCTP_PCB_FLAGS_DO_NOT_PMTUD); } if (paddrp->spp_flags & SPP_DSCP) { TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { net->dscp = paddrp->spp_dscp & 0xfc; net->dscp |= 0x01; } stcb->asoc.default_dscp = paddrp->spp_dscp & 0xfc; stcb->asoc.default_dscp |= 0x01; } #ifdef INET6 if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL) { TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { if (net->ro._l_addr.sa.sa_family == AF_INET6) { net->flowlabel = paddrp->spp_ipv6_flowlabel & 0x000fffff; net->flowlabel |= 0x80000000; } } stcb->asoc.default_flowlabel = paddrp->spp_ipv6_flowlabel & 0x000fffff; stcb->asoc.default_flowlabel |= 0x80000000; } #endif } SCTP_TCB_UNLOCK(stcb); } else { /************************NO TCB, SET TO default stuff ******************/ if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (paddrp->spp_assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_WLOCK(inp); /* * For the TOS/FLOWLABEL stuff you * set it with the options on the * socket */ if (paddrp->spp_pathmaxrxt != 0) { inp->sctp_ep.def_net_failure = paddrp->spp_pathmaxrxt; } if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO) inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = 0; else if (paddrp->spp_hbinterval != 0) { if (paddrp->spp_hbinterval > SCTP_MAX_HB_INTERVAL) paddrp->spp_hbinterval = SCTP_MAX_HB_INTERVAL; inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(paddrp->spp_hbinterval); } if (paddrp->spp_flags & SPP_HB_ENABLE) { if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO) { inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = 0; } else if (paddrp->spp_hbinterval) { inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(paddrp->spp_hbinterval); } sctp_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT); } else if (paddrp->spp_flags & SPP_HB_DISABLE) { sctp_feature_on(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT); } if (paddrp->spp_flags & SPP_PMTUD_ENABLE) { sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_NOT_PMTUD); } else if (paddrp->spp_flags & SPP_PMTUD_DISABLE) { sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_NOT_PMTUD); } if (paddrp->spp_flags & SPP_DSCP) { inp->sctp_ep.default_dscp = paddrp->spp_dscp & 0xfc; inp->sctp_ep.default_dscp |= 0x01; } #ifdef INET6 if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL) { if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { inp->sctp_ep.default_flowlabel = paddrp->spp_ipv6_flowlabel & 0x000fffff; inp->sctp_ep.default_flowlabel |= 0x80000000; } } #endif SCTP_INP_WUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } break; } case SCTP_RTOINFO: { struct sctp_rtoinfo *srto; uint32_t new_init, new_min, new_max; SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, optsize); SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id); if (stcb) { if (srto->srto_initial) new_init = srto->srto_initial; else new_init = stcb->asoc.initial_rto; if (srto->srto_max) new_max = srto->srto_max; else new_max = stcb->asoc.maxrto; if (srto->srto_min) new_min = srto->srto_min; else new_min = stcb->asoc.minrto; if ((new_min <= new_init) && (new_init <= new_max)) { stcb->asoc.initial_rto = new_init; stcb->asoc.maxrto = new_max; stcb->asoc.minrto = new_min; } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (srto->srto_assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_WLOCK(inp); if (srto->srto_initial) new_init = srto->srto_initial; else new_init = inp->sctp_ep.initial_rto; if (srto->srto_max) new_max = srto->srto_max; else new_max = inp->sctp_ep.sctp_maxrto; if (srto->srto_min) new_min = srto->srto_min; else new_min = inp->sctp_ep.sctp_minrto; if ((new_min <= new_init) && (new_init <= new_max)) { inp->sctp_ep.initial_rto = new_init; inp->sctp_ep.sctp_maxrto = new_max; inp->sctp_ep.sctp_minrto = new_min; } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } SCTP_INP_WUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } break; } case SCTP_ASSOCINFO: { struct sctp_assocparams *sasoc; SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, optsize); SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id); if (sasoc->sasoc_cookie_life) { /* boundary check the cookie life */ if (sasoc->sasoc_cookie_life < 1000) sasoc->sasoc_cookie_life = 1000; if (sasoc->sasoc_cookie_life > SCTP_MAX_COOKIE_LIFE) { sasoc->sasoc_cookie_life = SCTP_MAX_COOKIE_LIFE; } } if (stcb) { if (sasoc->sasoc_asocmaxrxt) stcb->asoc.max_send_times = sasoc->sasoc_asocmaxrxt; if (sasoc->sasoc_cookie_life) { stcb->asoc.cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life); } SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (sasoc->sasoc_assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_WLOCK(inp); if (sasoc->sasoc_asocmaxrxt) inp->sctp_ep.max_send_times = sasoc->sasoc_asocmaxrxt; if (sasoc->sasoc_cookie_life) { inp->sctp_ep.def_cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life); } SCTP_INP_WUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } break; } case SCTP_INITMSG: { struct sctp_initmsg *sinit; SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, optsize); SCTP_INP_WLOCK(inp); if (sinit->sinit_num_ostreams) inp->sctp_ep.pre_open_stream_count = sinit->sinit_num_ostreams; if (sinit->sinit_max_instreams) inp->sctp_ep.max_open_streams_intome = sinit->sinit_max_instreams; if (sinit->sinit_max_attempts) inp->sctp_ep.max_init_times = sinit->sinit_max_attempts; if (sinit->sinit_max_init_timeo) inp->sctp_ep.initial_init_rto_max = sinit->sinit_max_init_timeo; SCTP_INP_WUNLOCK(inp); break; } case SCTP_PRIMARY_ADDR: { struct sctp_setprim *spa; struct sctp_nets *net; struct sockaddr *addr; #if defined(INET) && defined(INET6) struct sockaddr_in sin_store; #endif SCTP_CHECK_AND_CAST(spa, optval, struct sctp_setprim, optsize); SCTP_FIND_STCB(inp, stcb, spa->ssp_assoc_id); #if defined(INET) && defined(INET6) if (spa->ssp_addr.ss_family == AF_INET6) { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)&spa->ssp_addr; if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { in6_sin6_2_sin(&sin_store, sin6); addr = (struct sockaddr *)&sin_store; } else { addr = (struct sockaddr *)&spa->ssp_addr; } } else { addr = (struct sockaddr *)&spa->ssp_addr; } #else addr = (struct sockaddr *)&spa->ssp_addr; #endif if (stcb != NULL) { net = sctp_findnet(stcb, addr); } else { /* * We increment here since * sctp_findassociation_ep_addr() wil do a * decrement if it finds the stcb as long as * the locked tcb (last argument) is NOT a * TCB.. aka NULL. */ net = NULL; SCTP_INP_INCR_REF(inp); stcb = sctp_findassociation_ep_addr(&inp, addr, &net, NULL, NULL); if (stcb == NULL) { SCTP_INP_DECR_REF(inp); } } if ((stcb != NULL) && (net != NULL)) { if (net != stcb->asoc.primary_destination) { if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED)) { /* Ok we need to set it */ if (sctp_set_primary_addr(stcb, (struct sockaddr *)NULL, net) == 0) { if ((stcb->asoc.alternate) && (!(net->dest_state & SCTP_ADDR_PF)) && (net->dest_state & SCTP_ADDR_REACHABLE)) { sctp_free_remote_addr(stcb->asoc.alternate); stcb->asoc.alternate = NULL; } } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } if (stcb != NULL) { SCTP_TCB_UNLOCK(stcb); } break; } case SCTP_SET_DYNAMIC_PRIMARY: { union sctp_sockstore *ss; error = priv_check(curthread, PRIV_NETINET_RESERVEDPORT); if (error) break; SCTP_CHECK_AND_CAST(ss, optval, union sctp_sockstore, optsize); /* SUPER USER CHECK? */ error = sctp_dynamic_set_primary(&ss->sa, vrf_id); break; } case SCTP_SET_PEER_PRIMARY_ADDR: { struct sctp_setpeerprim *sspp; struct sockaddr *addr; #if defined(INET) && defined(INET6) struct sockaddr_in sin_store; #endif SCTP_CHECK_AND_CAST(sspp, optval, struct sctp_setpeerprim, optsize); SCTP_FIND_STCB(inp, stcb, sspp->sspp_assoc_id); if (stcb != NULL) { struct sctp_ifa *ifa; #if defined(INET) && defined(INET6) if (sspp->sspp_addr.ss_family == AF_INET6) { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)&sspp->sspp_addr; if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { in6_sin6_2_sin(&sin_store, sin6); addr = (struct sockaddr *)&sin_store; } else { addr = (struct sockaddr *)&sspp->sspp_addr; } } else { addr = (struct sockaddr *)&sspp->sspp_addr; } #else addr = (struct sockaddr *)&sspp->sspp_addr; #endif ifa = sctp_find_ifa_by_addr(addr, stcb->asoc.vrf_id, SCTP_ADDR_NOT_LOCKED); if (ifa == NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; goto out_of_it; } if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) { /* * Must validate the ifa found is in * our ep */ struct sctp_laddr *laddr; int found = 0; LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { if (laddr->ifa == NULL) { SCTPDBG(SCTP_DEBUG_OUTPUT1, "%s: NULL ifa\n", __func__); continue; } if ((sctp_is_addr_restricted(stcb, laddr->ifa)) && (!sctp_is_addr_pending(stcb, laddr->ifa))) { continue; } if (laddr->ifa == ifa) { found = 1; break; } } if (!found) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; goto out_of_it; } } else { switch (addr->sa_family) { #ifdef INET case AF_INET: { struct sockaddr_in *sin; sin = (struct sockaddr_in *)addr; if (prison_check_ip4(inp->ip_inp.inp.inp_cred, &sin->sin_addr) != 0) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; goto out_of_it; } break; } #endif #ifdef INET6 case AF_INET6: { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)addr; if (prison_check_ip6(inp->ip_inp.inp.inp_cred, &sin6->sin6_addr) != 0) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; goto out_of_it; } break; } #endif default: SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; goto out_of_it; } } if (sctp_set_primary_ip_address_sa(stcb, addr) != 0) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SOCKOPT, SCTP_SO_LOCKED); out_of_it: SCTP_TCB_UNLOCK(stcb); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } break; } case SCTP_BINDX_ADD_ADDR: { struct sctp_getaddresses *addrs; struct thread *td; td = (struct thread *)p; SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses, optsize); #ifdef INET if (addrs->addr->sa_family == AF_INET) { if (optsize < sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; break; } if (td != NULL && (error = prison_local_ip4(td->td_ucred, &(((struct sockaddr_in *)(addrs->addr))->sin_addr)))) { SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, error); break; } } else #endif #ifdef INET6 if (addrs->addr->sa_family == AF_INET6) { if (optsize < sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in6)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; break; } if (td != NULL && (error = prison_local_ip6(td->td_ucred, &(((struct sockaddr_in6 *)(addrs->addr))->sin6_addr), (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) { SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, error); break; } } else #endif { error = EAFNOSUPPORT; break; } sctp_bindx_add_address(so, inp, addrs->addr, addrs->sget_assoc_id, vrf_id, &error, p); break; } case SCTP_BINDX_REM_ADDR: { struct sctp_getaddresses *addrs; struct thread *td; td = (struct thread *)p; SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses, optsize); #ifdef INET if (addrs->addr->sa_family == AF_INET) { if (optsize < sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; break; } if (td != NULL && (error = prison_local_ip4(td->td_ucred, &(((struct sockaddr_in *)(addrs->addr))->sin_addr)))) { SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, error); break; } } else #endif #ifdef INET6 if (addrs->addr->sa_family == AF_INET6) { if (optsize < sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in6)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; break; } if (td != NULL && (error = prison_local_ip6(td->td_ucred, &(((struct sockaddr_in6 *)(addrs->addr))->sin6_addr), (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) { SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, error); break; } } else #endif { error = EAFNOSUPPORT; break; } sctp_bindx_delete_address(inp, addrs->addr, addrs->sget_assoc_id, vrf_id, &error); break; } case SCTP_EVENT: { struct sctp_event *event; uint32_t event_type; SCTP_CHECK_AND_CAST(event, optval, struct sctp_event, optsize); SCTP_FIND_STCB(inp, stcb, event->se_assoc_id); switch (event->se_type) { case SCTP_ASSOC_CHANGE: event_type = SCTP_PCB_FLAGS_RECVASSOCEVNT; break; case SCTP_PEER_ADDR_CHANGE: event_type = SCTP_PCB_FLAGS_RECVPADDREVNT; break; case SCTP_REMOTE_ERROR: event_type = SCTP_PCB_FLAGS_RECVPEERERR; break; case SCTP_SEND_FAILED: event_type = SCTP_PCB_FLAGS_RECVSENDFAILEVNT; break; case SCTP_SHUTDOWN_EVENT: event_type = SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT; break; case SCTP_ADAPTATION_INDICATION: event_type = SCTP_PCB_FLAGS_ADAPTATIONEVNT; break; case SCTP_PARTIAL_DELIVERY_EVENT: event_type = SCTP_PCB_FLAGS_PDAPIEVNT; break; case SCTP_AUTHENTICATION_EVENT: event_type = SCTP_PCB_FLAGS_AUTHEVNT; break; case SCTP_STREAM_RESET_EVENT: event_type = SCTP_PCB_FLAGS_STREAM_RESETEVNT; break; case SCTP_SENDER_DRY_EVENT: event_type = SCTP_PCB_FLAGS_DRYEVNT; break; case SCTP_NOTIFICATIONS_STOPPED_EVENT: event_type = 0; SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTSUP); error = ENOTSUP; break; case SCTP_ASSOC_RESET_EVENT: event_type = SCTP_PCB_FLAGS_ASSOC_RESETEVNT; break; case SCTP_STREAM_CHANGE_EVENT: event_type = SCTP_PCB_FLAGS_STREAM_CHANGEEVNT; break; case SCTP_SEND_FAILED_EVENT: event_type = SCTP_PCB_FLAGS_RECVNSENDFAILEVNT; break; default: event_type = 0; SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; break; } if (event_type > 0) { if (stcb) { if (event->se_on) { sctp_stcb_feature_on(inp, stcb, event_type); if (event_type == SCTP_PCB_FLAGS_DRYEVNT) { if (TAILQ_EMPTY(&stcb->asoc.send_queue) && TAILQ_EMPTY(&stcb->asoc.sent_queue) && (stcb->asoc.stream_queue_cnt == 0)) { sctp_ulp_notify(SCTP_NOTIFY_SENDER_DRY, stcb, 0, NULL, SCTP_SO_LOCKED); } } } else { sctp_stcb_feature_off(inp, stcb, event_type); } SCTP_TCB_UNLOCK(stcb); } else { /* * We don't want to send up a storm * of events, so return an error for * sender dry events */ if ((event_type == SCTP_PCB_FLAGS_DRYEVNT) && ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) == 0) && ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) && ((event->se_assoc_id == SCTP_ALL_ASSOC) || (event->se_assoc_id == SCTP_CURRENT_ASSOC))) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTSUP); error = ENOTSUP; break; } if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (event->se_assoc_id == SCTP_FUTURE_ASSOC) || (event->se_assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_WLOCK(inp); if (event->se_on) { sctp_feature_on(inp, event_type); } else { sctp_feature_off(inp, event_type); } SCTP_INP_WUNLOCK(inp); } if ((event->se_assoc_id == SCTP_CURRENT_ASSOC) || (event->se_assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_RLOCK(inp); LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { SCTP_TCB_LOCK(stcb); if (event->se_on) { sctp_stcb_feature_on(inp, stcb, event_type); } else { sctp_stcb_feature_off(inp, stcb, event_type); } SCTP_TCB_UNLOCK(stcb); } SCTP_INP_RUNLOCK(inp); } } } break; } case SCTP_RECVRCVINFO: { int *onoff; SCTP_CHECK_AND_CAST(onoff, optval, int, optsize); SCTP_INP_WLOCK(inp); if (*onoff != 0) { sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVRCVINFO); } else { sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO); } SCTP_INP_WUNLOCK(inp); break; } case SCTP_RECVNXTINFO: { int *onoff; SCTP_CHECK_AND_CAST(onoff, optval, int, optsize); SCTP_INP_WLOCK(inp); if (*onoff != 0) { sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO); } else { sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO); } SCTP_INP_WUNLOCK(inp); break; } case SCTP_DEFAULT_SNDINFO: { struct sctp_sndinfo *info; uint16_t policy; SCTP_CHECK_AND_CAST(info, optval, struct sctp_sndinfo, optsize); SCTP_FIND_STCB(inp, stcb, info->snd_assoc_id); if (stcb) { if (info->snd_sid < stcb->asoc.streamoutcnt) { stcb->asoc.def_send.sinfo_stream = info->snd_sid; policy = PR_SCTP_POLICY(stcb->asoc.def_send.sinfo_flags); stcb->asoc.def_send.sinfo_flags = info->snd_flags; stcb->asoc.def_send.sinfo_flags |= policy; stcb->asoc.def_send.sinfo_ppid = info->snd_ppid; stcb->asoc.def_send.sinfo_context = info->snd_context; } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (info->snd_assoc_id == SCTP_FUTURE_ASSOC) || (info->snd_assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_WLOCK(inp); inp->def_send.sinfo_stream = info->snd_sid; policy = PR_SCTP_POLICY(inp->def_send.sinfo_flags); inp->def_send.sinfo_flags = info->snd_flags; inp->def_send.sinfo_flags |= policy; inp->def_send.sinfo_ppid = info->snd_ppid; inp->def_send.sinfo_context = info->snd_context; SCTP_INP_WUNLOCK(inp); } if ((info->snd_assoc_id == SCTP_CURRENT_ASSOC) || (info->snd_assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_RLOCK(inp); LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { SCTP_TCB_LOCK(stcb); if (info->snd_sid < stcb->asoc.streamoutcnt) { stcb->asoc.def_send.sinfo_stream = info->snd_sid; policy = PR_SCTP_POLICY(stcb->asoc.def_send.sinfo_flags); stcb->asoc.def_send.sinfo_flags = info->snd_flags; stcb->asoc.def_send.sinfo_flags |= policy; stcb->asoc.def_send.sinfo_ppid = info->snd_ppid; stcb->asoc.def_send.sinfo_context = info->snd_context; } SCTP_TCB_UNLOCK(stcb); } SCTP_INP_RUNLOCK(inp); } } break; } case SCTP_DEFAULT_PRINFO: { struct sctp_default_prinfo *info; SCTP_CHECK_AND_CAST(info, optval, struct sctp_default_prinfo, optsize); SCTP_FIND_STCB(inp, stcb, info->pr_assoc_id); if (info->pr_policy > SCTP_PR_SCTP_MAX) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; break; } if (stcb) { stcb->asoc.def_send.sinfo_flags &= 0xfff0; stcb->asoc.def_send.sinfo_flags |= info->pr_policy; stcb->asoc.def_send.sinfo_timetolive = info->pr_value; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (info->pr_assoc_id == SCTP_FUTURE_ASSOC) || (info->pr_assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_WLOCK(inp); inp->def_send.sinfo_flags &= 0xfff0; inp->def_send.sinfo_flags |= info->pr_policy; inp->def_send.sinfo_timetolive = info->pr_value; SCTP_INP_WUNLOCK(inp); } if ((info->pr_assoc_id == SCTP_CURRENT_ASSOC) || (info->pr_assoc_id == SCTP_ALL_ASSOC)) { SCTP_INP_RLOCK(inp); LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { SCTP_TCB_LOCK(stcb); stcb->asoc.def_send.sinfo_flags &= 0xfff0; stcb->asoc.def_send.sinfo_flags |= info->pr_policy; stcb->asoc.def_send.sinfo_timetolive = info->pr_value; SCTP_TCB_UNLOCK(stcb); } SCTP_INP_RUNLOCK(inp); } } break; } case SCTP_PEER_ADDR_THLDS: /* Applies to the specific association */ { struct sctp_paddrthlds *thlds; struct sctp_nets *net; struct sockaddr *addr; #if defined(INET) && defined(INET6) struct sockaddr_in sin_store; #endif SCTP_CHECK_AND_CAST(thlds, optval, struct sctp_paddrthlds, optsize); SCTP_FIND_STCB(inp, stcb, thlds->spt_assoc_id); #if defined(INET) && defined(INET6) if (thlds->spt_address.ss_family == AF_INET6) { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)&thlds->spt_address; if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { in6_sin6_2_sin(&sin_store, sin6); addr = (struct sockaddr *)&sin_store; } else { addr = (struct sockaddr *)&thlds->spt_address; } } else { addr = (struct sockaddr *)&thlds->spt_address; } #else addr = (struct sockaddr *)&thlds->spt_address; #endif if (stcb != NULL) { net = sctp_findnet(stcb, addr); } else { /* * We increment here since * sctp_findassociation_ep_addr() wil do a * decrement if it finds the stcb as long as * the locked tcb (last argument) is NOT a * TCB.. aka NULL. */ net = NULL; SCTP_INP_INCR_REF(inp); stcb = sctp_findassociation_ep_addr(&inp, addr, &net, NULL, NULL); if (stcb == NULL) { SCTP_INP_DECR_REF(inp); } } if ((stcb != NULL) && (net == NULL)) { #ifdef INET if (addr->sa_family == AF_INET) { struct sockaddr_in *sin; sin = (struct sockaddr_in *)addr; if (sin->sin_addr.s_addr != INADDR_ANY) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); SCTP_TCB_UNLOCK(stcb); error = EINVAL; break; } } else #endif #ifdef INET6 if (addr->sa_family == AF_INET6) { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)addr; if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); SCTP_TCB_UNLOCK(stcb); error = EINVAL; break; } } else #endif { error = EAFNOSUPPORT; SCTP_TCB_UNLOCK(stcb); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error); break; } } if (stcb != NULL) { if (net != NULL) { net->failure_threshold = thlds->spt_pathmaxrxt; net->pf_threshold = thlds->spt_pathpfthld; if (net->dest_state & SCTP_ADDR_PF) { if ((net->error_count > net->failure_threshold) || (net->error_count <= net->pf_threshold)) { net->dest_state &= ~SCTP_ADDR_PF; } } else { if ((net->error_count > net->pf_threshold) && (net->error_count <= net->failure_threshold)) { net->dest_state |= SCTP_ADDR_PF; sctp_send_hb(stcb, net, SCTP_SO_LOCKED); sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep, stcb, net, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_17); sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep, stcb, net); } } if (net->dest_state & SCTP_ADDR_REACHABLE) { if (net->error_count > net->failure_threshold) { net->dest_state &= ~SCTP_ADDR_REACHABLE; sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN, stcb, 0, net, SCTP_SO_LOCKED); } } else { if (net->error_count <= net->failure_threshold) { net->dest_state |= SCTP_ADDR_REACHABLE; sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_UP, stcb, 0, net, SCTP_SO_LOCKED); } } } else { TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { net->failure_threshold = thlds->spt_pathmaxrxt; net->pf_threshold = thlds->spt_pathpfthld; if (net->dest_state & SCTP_ADDR_PF) { if ((net->error_count > net->failure_threshold) || (net->error_count <= net->pf_threshold)) { net->dest_state &= ~SCTP_ADDR_PF; } } else { if ((net->error_count > net->pf_threshold) && (net->error_count <= net->failure_threshold)) { net->dest_state |= SCTP_ADDR_PF; sctp_send_hb(stcb, net, SCTP_SO_LOCKED); sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep, stcb, net, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_18); sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, stcb->sctp_ep, stcb, net); } } if (net->dest_state & SCTP_ADDR_REACHABLE) { if (net->error_count > net->failure_threshold) { net->dest_state &= ~SCTP_ADDR_REACHABLE; sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN, stcb, 0, net, SCTP_SO_LOCKED); } } else { if (net->error_count <= net->failure_threshold) { net->dest_state |= SCTP_ADDR_REACHABLE; sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_UP, stcb, 0, net, SCTP_SO_LOCKED); } } } stcb->asoc.def_net_failure = thlds->spt_pathmaxrxt; stcb->asoc.def_net_pf_threshold = thlds->spt_pathpfthld; } SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (thlds->spt_assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_WLOCK(inp); inp->sctp_ep.def_net_failure = thlds->spt_pathmaxrxt; inp->sctp_ep.def_net_pf_threshold = thlds->spt_pathpfthld; SCTP_INP_WUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } break; } case SCTP_REMOTE_UDP_ENCAPS_PORT: { struct sctp_udpencaps *encaps; struct sctp_nets *net; struct sockaddr *addr; #if defined(INET) && defined(INET6) struct sockaddr_in sin_store; #endif SCTP_CHECK_AND_CAST(encaps, optval, struct sctp_udpencaps, optsize); SCTP_FIND_STCB(inp, stcb, encaps->sue_assoc_id); #if defined(INET) && defined(INET6) if (encaps->sue_address.ss_family == AF_INET6) { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)&encaps->sue_address; if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { in6_sin6_2_sin(&sin_store, sin6); addr = (struct sockaddr *)&sin_store; } else { addr = (struct sockaddr *)&encaps->sue_address; } } else { addr = (struct sockaddr *)&encaps->sue_address; } #else addr = (struct sockaddr *)&encaps->sue_address; #endif if (stcb != NULL) { net = sctp_findnet(stcb, addr); } else { /* * We increment here since * sctp_findassociation_ep_addr() wil do a * decrement if it finds the stcb as long as * the locked tcb (last argument) is NOT a * TCB.. aka NULL. */ net = NULL; SCTP_INP_INCR_REF(inp); stcb = sctp_findassociation_ep_addr(&inp, addr, &net, NULL, NULL); if (stcb == NULL) { SCTP_INP_DECR_REF(inp); } } if ((stcb != NULL) && (net == NULL)) { #ifdef INET if (addr->sa_family == AF_INET) { struct sockaddr_in *sin; sin = (struct sockaddr_in *)addr; if (sin->sin_addr.s_addr != INADDR_ANY) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); SCTP_TCB_UNLOCK(stcb); error = EINVAL; break; } } else #endif #ifdef INET6 if (addr->sa_family == AF_INET6) { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)addr; if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); SCTP_TCB_UNLOCK(stcb); error = EINVAL; break; } } else #endif { error = EAFNOSUPPORT; SCTP_TCB_UNLOCK(stcb); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error); break; } } if (stcb != NULL) { if (net != NULL) { net->port = encaps->sue_port; } else { stcb->asoc.port = encaps->sue_port; } SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (encaps->sue_assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_WLOCK(inp); inp->sctp_ep.port = encaps->sue_port; SCTP_INP_WUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } break; } case SCTP_ECN_SUPPORTED: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_WLOCK(inp); if (av->assoc_value == 0) { inp->ecn_supported = 0; } else { inp->ecn_supported = 1; } SCTP_INP_WUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } break; } case SCTP_PR_SUPPORTED: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_WLOCK(inp); if (av->assoc_value == 0) { inp->prsctp_supported = 0; } else { inp->prsctp_supported = 1; } SCTP_INP_WUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } break; } case SCTP_AUTH_SUPPORTED: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC)) { if ((av->assoc_value == 0) && (inp->asconf_supported == 1)) { /* * AUTH is required for * ASCONF */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } else { SCTP_INP_WLOCK(inp); if (av->assoc_value == 0) { inp->auth_supported = 0; } else { inp->auth_supported = 1; } SCTP_INP_WUNLOCK(inp); } } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } break; } case SCTP_ASCONF_SUPPORTED: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC)) { if ((av->assoc_value != 0) && (inp->auth_supported == 0)) { /* * AUTH is required for * ASCONF */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } else { SCTP_INP_WLOCK(inp); if (av->assoc_value == 0) { inp->asconf_supported = 0; sctp_auth_delete_chunk(SCTP_ASCONF, inp->sctp_ep.local_auth_chunks); sctp_auth_delete_chunk(SCTP_ASCONF_ACK, inp->sctp_ep.local_auth_chunks); } else { inp->asconf_supported = 1; sctp_auth_add_chunk(SCTP_ASCONF, inp->sctp_ep.local_auth_chunks); sctp_auth_add_chunk(SCTP_ASCONF_ACK, inp->sctp_ep.local_auth_chunks); } SCTP_INP_WUNLOCK(inp); } } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } break; } case SCTP_RECONFIG_SUPPORTED: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_WLOCK(inp); if (av->assoc_value == 0) { inp->reconfig_supported = 0; } else { inp->reconfig_supported = 1; } SCTP_INP_WUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } break; } case SCTP_NRSACK_SUPPORTED: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_WLOCK(inp); if (av->assoc_value == 0) { inp->nrsack_supported = 0; } else { inp->nrsack_supported = 1; } SCTP_INP_WUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } break; } case SCTP_PKTDROP_SUPPORTED: { struct sctp_assoc_value *av; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_WLOCK(inp); if (av->assoc_value == 0) { inp->pktdrop_supported = 0; } else { inp->pktdrop_supported = 1; } SCTP_INP_WUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } break; } case SCTP_MAX_CWND: { struct sctp_assoc_value *av; struct sctp_nets *net; SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize); SCTP_FIND_STCB(inp, stcb, av->assoc_id); if (stcb) { stcb->asoc.max_cwnd = av->assoc_value; if (stcb->asoc.max_cwnd > 0) { TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { if ((net->cwnd > stcb->asoc.max_cwnd) && (net->cwnd > (net->mtu - sizeof(struct sctphdr)))) { net->cwnd = stcb->asoc.max_cwnd; if (net->cwnd < (net->mtu - sizeof(struct sctphdr))) { net->cwnd = net->mtu - sizeof(struct sctphdr); } } } } SCTP_TCB_UNLOCK(stcb); } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || (av->assoc_id == SCTP_FUTURE_ASSOC)) { SCTP_INP_WLOCK(inp); inp->max_cwnd = av->assoc_value; SCTP_INP_WUNLOCK(inp); } else { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } } break; } default: SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT); error = ENOPROTOOPT; break; } /* end switch (opt) */ return (error); } int sctp_ctloutput(struct socket *so, struct sockopt *sopt) { void *optval = NULL; size_t optsize = 0; void *p; int error = 0; struct sctp_inpcb *inp; if ((sopt->sopt_level == SOL_SOCKET) && (sopt->sopt_name == SO_SETFIB)) { inp = (struct sctp_inpcb *)so->so_pcb; if (inp == NULL) { SCTP_LTRACE_ERR_RET(so->so_pcb, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOBUFS); return (EINVAL); } SCTP_INP_WLOCK(inp); inp->fibnum = so->so_fibnum; SCTP_INP_WUNLOCK(inp); return (0); } if (sopt->sopt_level != IPPROTO_SCTP) { /* wrong proto level... send back up to IP */ #ifdef INET6 if (INP_CHECK_SOCKAF(so, AF_INET6)) error = ip6_ctloutput(so, sopt); #endif /* INET6 */ #if defined(INET) && defined(INET6) else #endif #ifdef INET error = ip_ctloutput(so, sopt); #endif return (error); } optsize = sopt->sopt_valsize; if (optsize) { SCTP_MALLOC(optval, void *, optsize, SCTP_M_SOCKOPT); if (optval == NULL) { SCTP_LTRACE_ERR_RET(so->so_pcb, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOBUFS); return (ENOBUFS); } error = sooptcopyin(sopt, optval, optsize, optsize); if (error) { SCTP_FREE(optval, SCTP_M_SOCKOPT); goto out; } } p = (void *)sopt->sopt_td; if (sopt->sopt_dir == SOPT_SET) { error = sctp_setopt(so, sopt->sopt_name, optval, optsize, p); } else if (sopt->sopt_dir == SOPT_GET) { error = sctp_getopt(so, sopt->sopt_name, optval, &optsize, p); } else { SCTP_LTRACE_ERR_RET(so->so_pcb, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; } if ((error == 0) && (optval != NULL)) { error = sooptcopyout(sopt, optval, optsize); SCTP_FREE(optval, SCTP_M_SOCKOPT); } else if (optval != NULL) { SCTP_FREE(optval, SCTP_M_SOCKOPT); } out: return (error); } #ifdef INET static int sctp_connect(struct socket *so, struct sockaddr *addr, struct thread *p) { int error = 0; int create_lock_on = 0; uint32_t vrf_id; struct sctp_inpcb *inp; struct sctp_tcb *stcb = NULL; inp = (struct sctp_inpcb *)so->so_pcb; if (inp == NULL) { /* I made the same as TCP since we are not setup? */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return (ECONNRESET); } if (addr == NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return EINVAL; } switch (addr->sa_family) { #ifdef INET6 case AF_INET6: { struct sockaddr_in6 *sin6p; if (addr->sa_len != sizeof(struct sockaddr_in6)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return (EINVAL); } sin6p = (struct sockaddr_in6 *)addr; if (p != NULL && (error = prison_remote_ip6(p->td_ucred, &sin6p->sin6_addr)) != 0) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error); return (error); } break; } #endif #ifdef INET case AF_INET: { struct sockaddr_in *sinp; if (addr->sa_len != sizeof(struct sockaddr_in)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return (EINVAL); } sinp = (struct sockaddr_in *)addr; if (p != NULL && (error = prison_remote_ip4(p->td_ucred, &sinp->sin_addr)) != 0) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error); return (error); } break; } #endif default: SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EAFNOSUPPORT); return (EAFNOSUPPORT); } SCTP_INP_INCR_REF(inp); SCTP_ASOC_CREATE_LOCK(inp); create_lock_on = 1; if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) { /* Should I really unlock ? */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EFAULT); error = EFAULT; goto out_now; } #ifdef INET6 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) && (addr->sa_family == AF_INET6)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; goto out_now; } #endif if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == SCTP_PCB_FLAGS_UNBOUND) { /* Bind a ephemeral port */ error = sctp_inpcb_bind(so, NULL, NULL, p); if (error) { goto out_now; } } /* Now do we connect? */ if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) && (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE))) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); error = EINVAL; goto out_now; } if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) { /* We are already connected AND the TCP model */ SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE); error = EADDRINUSE; goto out_now; } if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { SCTP_INP_RLOCK(inp); stcb = LIST_FIRST(&inp->sctp_asoc_list); SCTP_INP_RUNLOCK(inp); } else { /* * We increment here since sctp_findassociation_ep_addr() * will do a decrement if it finds the stcb as long as the * locked tcb (last argument) is NOT a TCB.. aka NULL. */ SCTP_INP_INCR_REF(inp); stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL); if (stcb == NULL) { SCTP_INP_DECR_REF(inp); } else { SCTP_TCB_UNLOCK(stcb); } } if (stcb != NULL) { /* Already have or am bring up an association */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY); error = EALREADY; goto out_now; } vrf_id = inp->def_vrf_id; /* We are GOOD to go */ stcb = sctp_aloc_assoc(inp, addr, &error, 0, vrf_id, inp->sctp_ep.pre_open_stream_count, p); if (stcb == NULL) { /* Gak! no memory */ goto out_now; } if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; /* Set the connected flag so we can queue data */ soisconnecting(so); } SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_COOKIE_WAIT); (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); /* initialize authentication parameters for the assoc */ sctp_initialize_auth_params(inp, stcb); sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED); SCTP_TCB_UNLOCK(stcb); out_now: if (create_lock_on) { SCTP_ASOC_CREATE_UNLOCK(inp); } SCTP_INP_DECR_REF(inp); return (error); } #endif int sctp_listen(struct socket *so, int backlog, struct thread *p) { /* * Note this module depends on the protocol processing being called * AFTER any socket level flags and backlog are applied to the * socket. The traditional way that the socket flags are applied is * AFTER protocol processing. We have made a change to the * sys/kern/uipc_socket.c module to reverse this but this MUST be in * place if the socket API for SCTP is to work properly. */ int error = 0; struct sctp_inpcb *inp; inp = (struct sctp_inpcb *)so->so_pcb; if (inp == NULL) { /* I made the same as TCP since we are not setup? */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return (ECONNRESET); } if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) { /* See if we have a listener */ struct sctp_inpcb *tinp; union sctp_sockstore store; if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) { /* not bound all */ struct sctp_laddr *laddr; LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { memcpy(&store, &laddr->ifa->address, sizeof(store)); switch (store.sa.sa_family) { #ifdef INET case AF_INET: store.sin.sin_port = inp->sctp_lport; break; #endif #ifdef INET6 case AF_INET6: store.sin6.sin6_port = inp->sctp_lport; break; #endif default: break; } tinp = sctp_pcb_findep(&store.sa, 0, 0, inp->def_vrf_id); if (tinp && (tinp != inp) && ((tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) == 0) && ((tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) && (tinp->sctp_socket->so_qlimit)) { /* * we have a listener already and * its not this inp. */ SCTP_INP_DECR_REF(tinp); return (EADDRINUSE); } else if (tinp) { SCTP_INP_DECR_REF(tinp); } } } else { /* Setup a local addr bound all */ memset(&store, 0, sizeof(store)); #ifdef INET6 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { store.sa.sa_family = AF_INET6; store.sa.sa_len = sizeof(struct sockaddr_in6); } #endif #ifdef INET if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) { store.sa.sa_family = AF_INET; store.sa.sa_len = sizeof(struct sockaddr_in); } #endif switch (store.sa.sa_family) { #ifdef INET case AF_INET: store.sin.sin_port = inp->sctp_lport; break; #endif #ifdef INET6 case AF_INET6: store.sin6.sin6_port = inp->sctp_lport; break; #endif default: break; } tinp = sctp_pcb_findep(&store.sa, 0, 0, inp->def_vrf_id); if (tinp && (tinp != inp) && ((tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) == 0) && ((tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) && (tinp->sctp_socket->so_qlimit)) { /* * we have a listener already and its not * this inp. */ SCTP_INP_DECR_REF(tinp); return (EADDRINUSE); } else if (tinp) { SCTP_INP_DECR_REF(tinp); } } } SCTP_INP_RLOCK(inp); #ifdef SCTP_LOCK_LOGGING if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOCK_LOGGING_ENABLE) { sctp_log_lock(inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_SOCK); } #endif SOCK_LOCK(so); error = solisten_proto_check(so); SOCK_UNLOCK(so); if (error) { SCTP_INP_RUNLOCK(inp); return (error); } if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) && (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { /* * The unlucky case - We are in the tcp pool with this guy. * - Someone else is in the main inp slot. - We must move * this guy (the listener) to the main slot - We must then * move the guy that was listener to the TCP Pool. */ if (sctp_swap_inpcb_for_listen(inp)) { SCTP_INP_RUNLOCK(inp); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE); return (EADDRINUSE); } } if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) { /* We are already connected AND the TCP model */ SCTP_INP_RUNLOCK(inp); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE); return (EADDRINUSE); } SCTP_INP_RUNLOCK(inp); if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) { /* We must do a bind. */ if ((error = sctp_inpcb_bind(so, NULL, NULL, p))) { /* bind error, probably perm */ return (error); } } SOCK_LOCK(so); /* It appears for 7.0 and on, we must always call this. */ solisten_proto(so, backlog); if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) { /* remove the ACCEPTCONN flag for one-to-many sockets */ so->so_options &= ~SO_ACCEPTCONN; } if (backlog == 0) { /* turning off listen */ so->so_options &= ~SO_ACCEPTCONN; } SOCK_UNLOCK(so); return (error); } static int sctp_defered_wakeup_cnt = 0; int sctp_accept(struct socket *so, struct sockaddr **addr) { struct sctp_tcb *stcb; struct sctp_inpcb *inp; union sctp_sockstore store; #ifdef INET6 int error; #endif inp = (struct sctp_inpcb *)so->so_pcb; if (inp == NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return (ECONNRESET); } SCTP_INP_RLOCK(inp); if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) { SCTP_INP_RUNLOCK(inp); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP); return (EOPNOTSUPP); } if (so->so_state & SS_ISDISCONNECTED) { SCTP_INP_RUNLOCK(inp); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ECONNABORTED); return (ECONNABORTED); } stcb = LIST_FIRST(&inp->sctp_asoc_list); if (stcb == NULL) { SCTP_INP_RUNLOCK(inp); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return (ECONNRESET); } SCTP_TCB_LOCK(stcb); SCTP_INP_RUNLOCK(inp); store = stcb->asoc.primary_destination->ro._l_addr; stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE; SCTP_TCB_UNLOCK(stcb); switch (store.sa.sa_family) { #ifdef INET case AF_INET: { struct sockaddr_in *sin; SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin); if (sin == NULL) return (ENOMEM); sin->sin_family = AF_INET; sin->sin_len = sizeof(*sin); sin->sin_port = store.sin.sin_port; sin->sin_addr = store.sin.sin_addr; *addr = (struct sockaddr *)sin; break; } #endif #ifdef INET6 case AF_INET6: { struct sockaddr_in6 *sin6; SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); if (sin6 == NULL) return (ENOMEM); sin6->sin6_family = AF_INET6; sin6->sin6_len = sizeof(*sin6); sin6->sin6_port = store.sin6.sin6_port; sin6->sin6_addr = store.sin6.sin6_addr; if ((error = sa6_recoverscope(sin6)) != 0) { SCTP_FREE_SONAME(sin6); return (error); } *addr = (struct sockaddr *)sin6; break; } #endif default: /* TSNH */ break; } /* Wake any delayed sleep action */ if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { SCTP_INP_WLOCK(inp); inp->sctp_flags &= ~SCTP_PCB_FLAGS_DONT_WAKE; if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT) { inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT; SCTP_INP_WUNLOCK(inp); SOCKBUF_LOCK(&inp->sctp_socket->so_snd); if (sowriteable(inp->sctp_socket)) { sowwakeup_locked(inp->sctp_socket); } else { SOCKBUF_UNLOCK(&inp->sctp_socket->so_snd); } SCTP_INP_WLOCK(inp); } if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT) { inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT; SCTP_INP_WUNLOCK(inp); SOCKBUF_LOCK(&inp->sctp_socket->so_rcv); if (soreadable(inp->sctp_socket)) { sctp_defered_wakeup_cnt++; sorwakeup_locked(inp->sctp_socket); } else { SOCKBUF_UNLOCK(&inp->sctp_socket->so_rcv); } SCTP_INP_WLOCK(inp); } SCTP_INP_WUNLOCK(inp); } if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { SCTP_TCB_LOCK(stcb); sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_19); } return (0); } #ifdef INET int sctp_ingetaddr(struct socket *so, struct sockaddr **addr) { struct sockaddr_in *sin; uint32_t vrf_id; struct sctp_inpcb *inp; struct sctp_ifa *sctp_ifa; /* * Do the malloc first in case it blocks. */ SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin); if (sin == NULL) return (ENOMEM); sin->sin_family = AF_INET; sin->sin_len = sizeof(*sin); inp = (struct sctp_inpcb *)so->so_pcb; if (!inp) { SCTP_FREE_SONAME(sin); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return (ECONNRESET); } SCTP_INP_RLOCK(inp); sin->sin_port = inp->sctp_lport; if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { struct sctp_tcb *stcb; struct sockaddr_in *sin_a; struct sctp_nets *net; int fnd; stcb = LIST_FIRST(&inp->sctp_asoc_list); if (stcb == NULL) { goto notConn; } fnd = 0; sin_a = NULL; SCTP_TCB_LOCK(stcb); TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { sin_a = (struct sockaddr_in *)&net->ro._l_addr; if (sin_a == NULL) /* this will make coverity happy */ continue; if (sin_a->sin_family == AF_INET) { fnd = 1; break; } } if ((!fnd) || (sin_a == NULL)) { /* punt */ SCTP_TCB_UNLOCK(stcb); goto notConn; } vrf_id = inp->def_vrf_id; sctp_ifa = sctp_source_address_selection(inp, stcb, (sctp_route_t *) & net->ro, net, 0, vrf_id); if (sctp_ifa) { sin->sin_addr = sctp_ifa->address.sin.sin_addr; sctp_free_ifa(sctp_ifa); } SCTP_TCB_UNLOCK(stcb); } else { /* For the bound all case you get back 0 */ notConn: sin->sin_addr.s_addr = 0; } } else { /* Take the first IPv4 address in the list */ struct sctp_laddr *laddr; int fnd = 0; LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { if (laddr->ifa->address.sa.sa_family == AF_INET) { struct sockaddr_in *sin_a; sin_a = &laddr->ifa->address.sin; sin->sin_addr = sin_a->sin_addr; fnd = 1; break; } } if (!fnd) { SCTP_FREE_SONAME(sin); SCTP_INP_RUNLOCK(inp); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT); return (ENOENT); } } SCTP_INP_RUNLOCK(inp); (*addr) = (struct sockaddr *)sin; return (0); } int sctp_peeraddr(struct socket *so, struct sockaddr **addr) { struct sockaddr_in *sin; int fnd; struct sockaddr_in *sin_a; struct sctp_inpcb *inp; struct sctp_tcb *stcb; struct sctp_nets *net; /* Do the malloc first in case it blocks. */ SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin); if (sin == NULL) return (ENOMEM); sin->sin_family = AF_INET; sin->sin_len = sizeof(*sin); inp = (struct sctp_inpcb *)so->so_pcb; if ((inp == NULL) || ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) { /* UDP type and listeners will drop out here */ SCTP_FREE_SONAME(sin); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN); return (ENOTCONN); } SCTP_INP_RLOCK(inp); stcb = LIST_FIRST(&inp->sctp_asoc_list); if (stcb) { SCTP_TCB_LOCK(stcb); } SCTP_INP_RUNLOCK(inp); if (stcb == NULL) { SCTP_FREE_SONAME(sin); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); return (ECONNRESET); } fnd = 0; TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { sin_a = (struct sockaddr_in *)&net->ro._l_addr; if (sin_a->sin_family == AF_INET) { fnd = 1; sin->sin_port = stcb->rport; sin->sin_addr = sin_a->sin_addr; break; } } SCTP_TCB_UNLOCK(stcb); if (!fnd) { /* No IPv4 address */ SCTP_FREE_SONAME(sin); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT); return (ENOENT); } (*addr) = (struct sockaddr *)sin; return (0); } struct pr_usrreqs sctp_usrreqs = { .pru_abort = sctp_abort, .pru_accept = sctp_accept, .pru_attach = sctp_attach, .pru_bind = sctp_bind, .pru_connect = sctp_connect, .pru_control = in_control, .pru_close = sctp_close, .pru_detach = sctp_close, .pru_sopoll = sopoll_generic, .pru_flush = sctp_flush, .pru_disconnect = sctp_disconnect, .pru_listen = sctp_listen, .pru_peeraddr = sctp_peeraddr, .pru_send = sctp_sendm, .pru_shutdown = sctp_shutdown, .pru_sockaddr = sctp_ingetaddr, .pru_sosend = sctp_sosend, .pru_soreceive = sctp_soreceive }; #endif Index: head/sys/netinet/sctp_var.h =================================================================== --- head/sys/netinet/sctp_var.h (revision 297661) +++ head/sys/netinet/sctp_var.h (revision 297662) @@ -1,356 +1,364 @@ /*- * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved. * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * a) Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * b) Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the distribution. * * c) Neither the name of Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #ifndef _NETINET_SCTP_VAR_H_ #define _NETINET_SCTP_VAR_H_ #include #if defined(_KERNEL) || defined(__Userspace__) extern struct pr_usrreqs sctp_usrreqs; #define sctp_feature_on(inp, feature) (inp->sctp_features |= feature) #define sctp_feature_off(inp, feature) (inp->sctp_features &= ~feature) #define sctp_is_feature_on(inp, feature) ((inp->sctp_features & feature) == feature) #define sctp_is_feature_off(inp, feature) ((inp->sctp_features & feature) == 0) #define sctp_stcb_feature_on(inp, stcb, feature) {\ if (stcb) { \ stcb->asoc.sctp_features |= feature; \ } else if (inp) { \ inp->sctp_features |= feature; \ } \ } #define sctp_stcb_feature_off(inp, stcb, feature) {\ if (stcb) { \ stcb->asoc.sctp_features &= ~feature; \ } else if (inp) { \ inp->sctp_features &= ~feature; \ } \ } #define sctp_stcb_is_feature_on(inp, stcb, feature) \ (((stcb != NULL) && \ ((stcb->asoc.sctp_features & feature) == feature)) || \ ((stcb == NULL) && (inp != NULL) && \ ((inp->sctp_features & feature) == feature))) #define sctp_stcb_is_feature_off(inp, stcb, feature) \ (((stcb != NULL) && \ ((stcb->asoc.sctp_features & feature) == 0)) || \ ((stcb == NULL) && (inp != NULL) && \ ((inp->sctp_features & feature) == 0)) || \ ((stcb == NULL) && (inp == NULL))) /* managing mobility_feature in inpcb (by micchie) */ #define sctp_mobility_feature_on(inp, feature) (inp->sctp_mobility_features |= feature) #define sctp_mobility_feature_off(inp, feature) (inp->sctp_mobility_features &= ~feature) #define sctp_is_mobility_feature_on(inp, feature) (inp->sctp_mobility_features & feature) #define sctp_is_mobility_feature_off(inp, feature) ((inp->sctp_mobility_features & feature) == 0) #define sctp_maxspace(sb) (max((sb)->sb_hiwat,SCTP_MINIMAL_RWND)) #define sctp_sbspace(asoc, sb) ((long) ((sctp_maxspace(sb) > (asoc)->sb_cc) ? (sctp_maxspace(sb) - (asoc)->sb_cc) : 0)) #define sctp_sbspace_failedmsgs(sb) ((long) ((sctp_maxspace(sb) > (sb)->sb_cc) ? (sctp_maxspace(sb) - (sb)->sb_cc) : 0)) #define sctp_sbspace_sub(a,b) (((a) > (b)) ? ((a) - (b)) : 0) /* * I tried to cache the readq entries at one point. But the reality * is that it did not add any performance since this meant we had to * lock the STCB on read. And at that point once you have to do an * extra lock, it really does not matter if the lock is in the ZONE * stuff or in our code. Note that this same problem would occur with * an mbuf cache as well so it is not really worth doing, at least * right now :-D */ - +#ifdef INVARIANTS #define sctp_free_a_readq(_stcb, _readq) { \ + if ((_readq)->on_strm_q) \ + panic("On strm q stcb:%p readq:%p", (_stcb), (_readq)); \ SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), (_readq)); \ SCTP_DECR_READQ_COUNT(); \ } +#else +#define sctp_free_a_readq(_stcb, _readq) { \ + SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), (_readq)); \ + SCTP_DECR_READQ_COUNT(); \ +} +#endif #define sctp_alloc_a_readq(_stcb, _readq) { \ (_readq) = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_readq), struct sctp_queued_to_read); \ if ((_readq)) { \ SCTP_INCR_READQ_COUNT(); \ } \ } #define sctp_free_a_strmoq(_stcb, _strmoq, _so_locked) { \ if ((_strmoq)->holds_key_ref) { \ sctp_auth_key_release(stcb, sp->auth_keyid, _so_locked); \ (_strmoq)->holds_key_ref = 0; \ } \ SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_strmoq), (_strmoq)); \ SCTP_DECR_STRMOQ_COUNT(); \ } #define sctp_alloc_a_strmoq(_stcb, _strmoq) { \ (_strmoq) = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_strmoq), struct sctp_stream_queue_pending); \ if ((_strmoq)) { \ memset(_strmoq, 0, sizeof(struct sctp_stream_queue_pending)); \ SCTP_INCR_STRMOQ_COUNT(); \ (_strmoq)->holds_key_ref = 0; \ } \ } #define sctp_free_a_chunk(_stcb, _chk, _so_locked) { \ if ((_chk)->holds_key_ref) {\ sctp_auth_key_release((_stcb), (_chk)->auth_keyid, _so_locked); \ (_chk)->holds_key_ref = 0; \ } \ if (_stcb) { \ SCTP_TCB_LOCK_ASSERT((_stcb)); \ if ((_chk)->whoTo) { \ sctp_free_remote_addr((_chk)->whoTo); \ (_chk)->whoTo = NULL; \ } \ if (((_stcb)->asoc.free_chunk_cnt > SCTP_BASE_SYSCTL(sctp_asoc_free_resc_limit)) || \ (SCTP_BASE_INFO(ipi_free_chunks) > SCTP_BASE_SYSCTL(sctp_system_free_resc_limit))) { \ SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), (_chk)); \ SCTP_DECR_CHK_COUNT(); \ } else { \ TAILQ_INSERT_TAIL(&(_stcb)->asoc.free_chunks, (_chk), sctp_next); \ (_stcb)->asoc.free_chunk_cnt++; \ atomic_add_int(&SCTP_BASE_INFO(ipi_free_chunks), 1); \ } \ } else { \ SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), (_chk)); \ SCTP_DECR_CHK_COUNT(); \ } \ } #define sctp_alloc_a_chunk(_stcb, _chk) { \ if (TAILQ_EMPTY(&(_stcb)->asoc.free_chunks)) { \ (_chk) = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_chunk), struct sctp_tmit_chunk); \ if ((_chk)) { \ SCTP_INCR_CHK_COUNT(); \ (_chk)->whoTo = NULL; \ (_chk)->holds_key_ref = 0; \ } \ } else { \ (_chk) = TAILQ_FIRST(&(_stcb)->asoc.free_chunks); \ TAILQ_REMOVE(&(_stcb)->asoc.free_chunks, (_chk), sctp_next); \ atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1); \ (_chk)->holds_key_ref = 0; \ SCTP_STAT_INCR(sctps_cached_chk); \ (_stcb)->asoc.free_chunk_cnt--; \ } \ } #define sctp_free_remote_addr(__net) { \ if ((__net)) { \ if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&(__net)->ref_count)) { \ (void)SCTP_OS_TIMER_STOP(&(__net)->rxt_timer.timer); \ (void)SCTP_OS_TIMER_STOP(&(__net)->pmtu_timer.timer); \ (void)SCTP_OS_TIMER_STOP(&(__net)->hb_timer.timer); \ if ((__net)->ro.ro_rt) { \ RTFREE((__net)->ro.ro_rt); \ (__net)->ro.ro_rt = NULL; \ } \ if ((__net)->src_addr_selected) { \ sctp_free_ifa((__net)->ro._s_addr); \ (__net)->ro._s_addr = NULL; \ } \ (__net)->src_addr_selected = 0; \ (__net)->dest_state &= ~SCTP_ADDR_REACHABLE; \ SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_net), (__net)); \ SCTP_DECR_RADDR_COUNT(); \ } \ } \ } #define sctp_sbfree(ctl, stcb, sb, m) { \ - SCTP_SAVE_ATOMIC_DECREMENT(&(sb)->sb_cc, SCTP_BUF_LEN((m))); \ + SCTP_SAVE_ATOMIC_DECREMENT(&(sb)->sb_cc, SCTP_BUF_LEN((m))); \ SCTP_SAVE_ATOMIC_DECREMENT(&(sb)->sb_mbcnt, MSIZE); \ if (((ctl)->do_not_ref_stcb == 0) && stcb) {\ SCTP_SAVE_ATOMIC_DECREMENT(&(stcb)->asoc.sb_cc, SCTP_BUF_LEN((m))); \ SCTP_SAVE_ATOMIC_DECREMENT(&(stcb)->asoc.my_rwnd_control_len, MSIZE); \ } \ if (SCTP_BUF_TYPE(m) != MT_DATA && SCTP_BUF_TYPE(m) != MT_HEADER && \ SCTP_BUF_TYPE(m) != MT_OOBDATA) \ atomic_subtract_int(&(sb)->sb_ctl,SCTP_BUF_LEN((m))); \ } #define sctp_sballoc(stcb, sb, m) { \ atomic_add_int(&(sb)->sb_cc,SCTP_BUF_LEN((m))); \ atomic_add_int(&(sb)->sb_mbcnt, MSIZE); \ if (stcb) { \ - atomic_add_int(&(stcb)->asoc.sb_cc,SCTP_BUF_LEN((m))); \ + atomic_add_int(&(stcb)->asoc.sb_cc, SCTP_BUF_LEN((m))); \ atomic_add_int(&(stcb)->asoc.my_rwnd_control_len, MSIZE); \ } \ if (SCTP_BUF_TYPE(m) != MT_DATA && SCTP_BUF_TYPE(m) != MT_HEADER && \ SCTP_BUF_TYPE(m) != MT_OOBDATA) \ atomic_add_int(&(sb)->sb_ctl,SCTP_BUF_LEN((m))); \ } #define sctp_ucount_incr(val) { \ val++; \ } #define sctp_ucount_decr(val) { \ if (val > 0) { \ val--; \ } else { \ val = 0; \ } \ } #define sctp_mbuf_crush(data) do { \ struct mbuf *_m; \ _m = (data); \ while (_m && (SCTP_BUF_LEN(_m) == 0)) { \ (data) = SCTP_BUF_NEXT(_m); \ SCTP_BUF_NEXT(_m) = NULL; \ sctp_m_free(_m); \ _m = (data); \ } \ } while (0) #define sctp_flight_size_decrease(tp1) do { \ if (tp1->whoTo->flight_size >= tp1->book_size) \ tp1->whoTo->flight_size -= tp1->book_size; \ else \ tp1->whoTo->flight_size = 0; \ } while (0) #define sctp_flight_size_increase(tp1) do { \ (tp1)->whoTo->flight_size += (tp1)->book_size; \ } while (0) #ifdef SCTP_FS_SPEC_LOG #define sctp_total_flight_decrease(stcb, tp1) do { \ if (stcb->asoc.fs_index > SCTP_FS_SPEC_LOG_SIZE) \ stcb->asoc.fs_index = 0;\ stcb->asoc.fslog[stcb->asoc.fs_index].total_flight = stcb->asoc.total_flight; \ stcb->asoc.fslog[stcb->asoc.fs_index].tsn = tp1->rec.data.TSN_seq; \ stcb->asoc.fslog[stcb->asoc.fs_index].book = tp1->book_size; \ stcb->asoc.fslog[stcb->asoc.fs_index].sent = tp1->sent; \ stcb->asoc.fslog[stcb->asoc.fs_index].incr = 0; \ stcb->asoc.fslog[stcb->asoc.fs_index].decr = 1; \ stcb->asoc.fs_index++; \ tp1->window_probe = 0; \ if (stcb->asoc.total_flight >= tp1->book_size) { \ stcb->asoc.total_flight -= tp1->book_size; \ if (stcb->asoc.total_flight_count > 0) \ stcb->asoc.total_flight_count--; \ } else { \ stcb->asoc.total_flight = 0; \ stcb->asoc.total_flight_count = 0; \ } \ } while (0) #define sctp_total_flight_increase(stcb, tp1) do { \ if (stcb->asoc.fs_index > SCTP_FS_SPEC_LOG_SIZE) \ stcb->asoc.fs_index = 0;\ stcb->asoc.fslog[stcb->asoc.fs_index].total_flight = stcb->asoc.total_flight; \ stcb->asoc.fslog[stcb->asoc.fs_index].tsn = tp1->rec.data.TSN_seq; \ stcb->asoc.fslog[stcb->asoc.fs_index].book = tp1->book_size; \ stcb->asoc.fslog[stcb->asoc.fs_index].sent = tp1->sent; \ stcb->asoc.fslog[stcb->asoc.fs_index].incr = 1; \ stcb->asoc.fslog[stcb->asoc.fs_index].decr = 0; \ stcb->asoc.fs_index++; \ (stcb)->asoc.total_flight_count++; \ (stcb)->asoc.total_flight += (tp1)->book_size; \ } while (0) #else #define sctp_total_flight_decrease(stcb, tp1) do { \ tp1->window_probe = 0; \ if (stcb->asoc.total_flight >= tp1->book_size) { \ stcb->asoc.total_flight -= tp1->book_size; \ if (stcb->asoc.total_flight_count > 0) \ stcb->asoc.total_flight_count--; \ } else { \ stcb->asoc.total_flight = 0; \ stcb->asoc.total_flight_count = 0; \ } \ } while (0) #define sctp_total_flight_increase(stcb, tp1) do { \ (stcb)->asoc.total_flight_count++; \ (stcb)->asoc.total_flight += (tp1)->book_size; \ } while (0) #endif #define SCTP_PF_ENABLED(_net) (_net->pf_threshold < _net->failure_threshold) #define SCTP_NET_IS_PF(_net) (_net->pf_threshold < _net->error_count) struct sctp_nets; struct sctp_inpcb; struct sctp_tcb; struct sctphdr; void sctp_close(struct socket *so); int sctp_disconnect(struct socket *so); void sctp_ctlinput(int, struct sockaddr *, void *); int sctp_ctloutput(struct socket *, struct sockopt *); #ifdef INET void sctp_input_with_port(struct mbuf *, int, uint16_t); int sctp_input(struct mbuf **, int *, int); #endif void sctp_pathmtu_adjustment(struct sctp_tcb *, uint16_t); void sctp_drain(void); void sctp_init(void); void sctp_finish(void); int sctp_flush(struct socket *, int); int sctp_shutdown(struct socket *); void sctp_notify(struct sctp_inpcb *, struct ip *ip, struct sctphdr *, struct sockaddr *, struct sctp_tcb *, struct sctp_nets *); int sctp_bindx(struct socket *, int, struct sockaddr_storage *, int, int, struct proc *); /* can't use sctp_assoc_t here */ int sctp_peeloff(struct socket *, struct socket *, int, caddr_t, int *); int sctp_ingetaddr(struct socket *, struct sockaddr **); int sctp_peeraddr(struct socket *, struct sockaddr **); int sctp_listen(struct socket *, int, struct thread *); int sctp_accept(struct socket *, struct sockaddr **); #endif /* _KERNEL */ #endif /* !_NETINET_SCTP_VAR_H_ */ Index: head/sys/netinet/sctputil.c =================================================================== --- head/sys/netinet/sctputil.c (revision 297661) +++ head/sys/netinet/sctputil.c (revision 297662) @@ -1,7127 +1,7131 @@ /*- * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved. * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * a) Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * b) Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the distribution. * * c) Neither the name of Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #ifdef INET6 #include #endif #include #include #include #include #include /* for sctp_deliver_data() */ #include #include #include #include #include #include #ifndef KTR_SCTP #define KTR_SCTP KTR_SUBSYS #endif extern const struct sctp_cc_functions sctp_cc_functions[]; extern const struct sctp_ss_functions sctp_ss_functions[]; void sctp_sblog(struct sockbuf *sb, struct sctp_tcb *stcb, int from, int incr) { struct sctp_cwnd_log sctp_clog; sctp_clog.x.sb.stcb = stcb; sctp_clog.x.sb.so_sbcc = sb->sb_cc; if (stcb) sctp_clog.x.sb.stcb_sbcc = stcb->asoc.sb_cc; else sctp_clog.x.sb.stcb_sbcc = 0; sctp_clog.x.sb.incr = incr; SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", SCTP_LOG_EVENT_SB, from, sctp_clog.x.misc.log1, sctp_clog.x.misc.log2, sctp_clog.x.misc.log3, sctp_clog.x.misc.log4); } void sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc) { struct sctp_cwnd_log sctp_clog; sctp_clog.x.close.inp = (void *)inp; sctp_clog.x.close.sctp_flags = inp->sctp_flags; if (stcb) { sctp_clog.x.close.stcb = (void *)stcb; sctp_clog.x.close.state = (uint16_t) stcb->asoc.state; } else { sctp_clog.x.close.stcb = 0; sctp_clog.x.close.state = 0; } sctp_clog.x.close.loc = loc; SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", SCTP_LOG_EVENT_CLOSE, 0, sctp_clog.x.misc.log1, sctp_clog.x.misc.log2, sctp_clog.x.misc.log3, sctp_clog.x.misc.log4); } void rto_logging(struct sctp_nets *net, int from) { struct sctp_cwnd_log sctp_clog; memset(&sctp_clog, 0, sizeof(sctp_clog)); sctp_clog.x.rto.net = (void *)net; sctp_clog.x.rto.rtt = net->rtt / 1000; SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", SCTP_LOG_EVENT_RTT, from, sctp_clog.x.misc.log1, sctp_clog.x.misc.log2, sctp_clog.x.misc.log3, sctp_clog.x.misc.log4); } void sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t tsn, uint16_t sseq, uint16_t stream, int from) { struct sctp_cwnd_log sctp_clog; sctp_clog.x.strlog.stcb = stcb; sctp_clog.x.strlog.n_tsn = tsn; sctp_clog.x.strlog.n_sseq = sseq; sctp_clog.x.strlog.e_tsn = 0; sctp_clog.x.strlog.e_sseq = 0; sctp_clog.x.strlog.strm = stream; SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", SCTP_LOG_EVENT_STRM, from, sctp_clog.x.misc.log1, sctp_clog.x.misc.log2, sctp_clog.x.misc.log3, sctp_clog.x.misc.log4); } void sctp_log_nagle_event(struct sctp_tcb *stcb, int action) { struct sctp_cwnd_log sctp_clog; sctp_clog.x.nagle.stcb = (void *)stcb; sctp_clog.x.nagle.total_flight = stcb->asoc.total_flight; sctp_clog.x.nagle.total_in_queue = stcb->asoc.total_output_queue_size; sctp_clog.x.nagle.count_in_queue = stcb->asoc.chunks_on_out_queue; sctp_clog.x.nagle.count_in_flight = stcb->asoc.total_flight_count; SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", SCTP_LOG_EVENT_NAGLE, action, sctp_clog.x.misc.log1, sctp_clog.x.misc.log2, sctp_clog.x.misc.log3, sctp_clog.x.misc.log4); } void sctp_log_sack(uint32_t old_cumack, uint32_t cumack, uint32_t tsn, uint16_t gaps, uint16_t dups, int from) { struct sctp_cwnd_log sctp_clog; sctp_clog.x.sack.cumack = cumack; sctp_clog.x.sack.oldcumack = old_cumack; sctp_clog.x.sack.tsn = tsn; sctp_clog.x.sack.numGaps = gaps; sctp_clog.x.sack.numDups = dups; SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", SCTP_LOG_EVENT_SACK, from, sctp_clog.x.misc.log1, sctp_clog.x.misc.log2, sctp_clog.x.misc.log3, sctp_clog.x.misc.log4); } void sctp_log_map(uint32_t map, uint32_t cum, uint32_t high, int from) { struct sctp_cwnd_log sctp_clog; memset(&sctp_clog, 0, sizeof(sctp_clog)); sctp_clog.x.map.base = map; sctp_clog.x.map.cum = cum; sctp_clog.x.map.high = high; SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", SCTP_LOG_EVENT_MAP, from, sctp_clog.x.misc.log1, sctp_clog.x.misc.log2, sctp_clog.x.misc.log3, sctp_clog.x.misc.log4); } void sctp_log_fr(uint32_t biggest_tsn, uint32_t biggest_new_tsn, uint32_t tsn, int from) { struct sctp_cwnd_log sctp_clog; memset(&sctp_clog, 0, sizeof(sctp_clog)); sctp_clog.x.fr.largest_tsn = biggest_tsn; sctp_clog.x.fr.largest_new_tsn = biggest_new_tsn; sctp_clog.x.fr.tsn = tsn; SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", SCTP_LOG_EVENT_FR, from, sctp_clog.x.misc.log1, sctp_clog.x.misc.log2, sctp_clog.x.misc.log3, sctp_clog.x.misc.log4); } #ifdef SCTP_MBUF_LOGGING void sctp_log_mb(struct mbuf *m, int from) { struct sctp_cwnd_log sctp_clog; sctp_clog.x.mb.mp = m; sctp_clog.x.mb.mbuf_flags = (uint8_t) (SCTP_BUF_GET_FLAGS(m)); sctp_clog.x.mb.size = (uint16_t) (SCTP_BUF_LEN(m)); sctp_clog.x.mb.data = SCTP_BUF_AT(m, 0); if (SCTP_BUF_IS_EXTENDED(m)) { sctp_clog.x.mb.ext = SCTP_BUF_EXTEND_BASE(m); sctp_clog.x.mb.refcnt = (uint8_t) (SCTP_BUF_EXTEND_REFCNT(m)); } else { sctp_clog.x.mb.ext = 0; sctp_clog.x.mb.refcnt = 0; } SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", SCTP_LOG_EVENT_MBUF, from, sctp_clog.x.misc.log1, sctp_clog.x.misc.log2, sctp_clog.x.misc.log3, sctp_clog.x.misc.log4); } void sctp_log_mbc(struct mbuf *m, int from) { struct mbuf *mat; for (mat = m; mat; mat = SCTP_BUF_NEXT(mat)) { sctp_log_mb(mat, from); } } #endif void sctp_log_strm_del(struct sctp_queued_to_read *control, struct sctp_queued_to_read *poschk, int from) { struct sctp_cwnd_log sctp_clog; if (control == NULL) { SCTP_PRINTF("Gak log of NULL?\n"); return; } sctp_clog.x.strlog.stcb = control->stcb; sctp_clog.x.strlog.n_tsn = control->sinfo_tsn; sctp_clog.x.strlog.n_sseq = control->sinfo_ssn; sctp_clog.x.strlog.strm = control->sinfo_stream; if (poschk != NULL) { sctp_clog.x.strlog.e_tsn = poschk->sinfo_tsn; sctp_clog.x.strlog.e_sseq = poschk->sinfo_ssn; } else { sctp_clog.x.strlog.e_tsn = 0; sctp_clog.x.strlog.e_sseq = 0; } SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", SCTP_LOG_EVENT_STRM, from, sctp_clog.x.misc.log1, sctp_clog.x.misc.log2, sctp_clog.x.misc.log3, sctp_clog.x.misc.log4); } void sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *net, int augment, uint8_t from) { struct sctp_cwnd_log sctp_clog; sctp_clog.x.cwnd.net = net; if (stcb->asoc.send_queue_cnt > 255) sctp_clog.x.cwnd.cnt_in_send = 255; else sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt; if (stcb->asoc.stream_queue_cnt > 255) sctp_clog.x.cwnd.cnt_in_str = 255; else sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt; if (net) { sctp_clog.x.cwnd.cwnd_new_value = net->cwnd; sctp_clog.x.cwnd.inflight = net->flight_size; sctp_clog.x.cwnd.pseudo_cumack = net->pseudo_cumack; sctp_clog.x.cwnd.meets_pseudo_cumack = net->new_pseudo_cumack; sctp_clog.x.cwnd.need_new_pseudo_cumack = net->find_pseudo_cumack; } if (SCTP_CWNDLOG_PRESEND == from) { sctp_clog.x.cwnd.meets_pseudo_cumack = stcb->asoc.peers_rwnd; } sctp_clog.x.cwnd.cwnd_augment = augment; SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", SCTP_LOG_EVENT_CWND, from, sctp_clog.x.misc.log1, sctp_clog.x.misc.log2, sctp_clog.x.misc.log3, sctp_clog.x.misc.log4); } void sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from) { struct sctp_cwnd_log sctp_clog; memset(&sctp_clog, 0, sizeof(sctp_clog)); if (inp) { sctp_clog.x.lock.sock = (void *)inp->sctp_socket; } else { sctp_clog.x.lock.sock = (void *)NULL; } sctp_clog.x.lock.inp = (void *)inp; if (stcb) { sctp_clog.x.lock.tcb_lock = mtx_owned(&stcb->tcb_mtx); } else { sctp_clog.x.lock.tcb_lock = SCTP_LOCK_UNKNOWN; } if (inp) { sctp_clog.x.lock.inp_lock = mtx_owned(&inp->inp_mtx); sctp_clog.x.lock.create_lock = mtx_owned(&inp->inp_create_mtx); } else { sctp_clog.x.lock.inp_lock = SCTP_LOCK_UNKNOWN; sctp_clog.x.lock.create_lock = SCTP_LOCK_UNKNOWN; } sctp_clog.x.lock.info_lock = rw_wowned(&SCTP_BASE_INFO(ipi_ep_mtx)); if (inp && (inp->sctp_socket)) { sctp_clog.x.lock.sock_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx)); sctp_clog.x.lock.sockrcvbuf_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx)); sctp_clog.x.lock.socksndbuf_lock = mtx_owned(&(inp->sctp_socket->so_snd.sb_mtx)); } else { sctp_clog.x.lock.sock_lock = SCTP_LOCK_UNKNOWN; sctp_clog.x.lock.sockrcvbuf_lock = SCTP_LOCK_UNKNOWN; sctp_clog.x.lock.socksndbuf_lock = SCTP_LOCK_UNKNOWN; } SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", SCTP_LOG_LOCK_EVENT, from, sctp_clog.x.misc.log1, sctp_clog.x.misc.log2, sctp_clog.x.misc.log3, sctp_clog.x.misc.log4); } void sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *net, int error, int burst, uint8_t from) { struct sctp_cwnd_log sctp_clog; memset(&sctp_clog, 0, sizeof(sctp_clog)); sctp_clog.x.cwnd.net = net; sctp_clog.x.cwnd.cwnd_new_value = error; sctp_clog.x.cwnd.inflight = net->flight_size; sctp_clog.x.cwnd.cwnd_augment = burst; if (stcb->asoc.send_queue_cnt > 255) sctp_clog.x.cwnd.cnt_in_send = 255; else sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt; if (stcb->asoc.stream_queue_cnt > 255) sctp_clog.x.cwnd.cnt_in_str = 255; else sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt; SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", SCTP_LOG_EVENT_MAXBURST, from, sctp_clog.x.misc.log1, sctp_clog.x.misc.log2, sctp_clog.x.misc.log3, sctp_clog.x.misc.log4); } void sctp_log_rwnd(uint8_t from, uint32_t peers_rwnd, uint32_t snd_size, uint32_t overhead) { struct sctp_cwnd_log sctp_clog; sctp_clog.x.rwnd.rwnd = peers_rwnd; sctp_clog.x.rwnd.send_size = snd_size; sctp_clog.x.rwnd.overhead = overhead; sctp_clog.x.rwnd.new_rwnd = 0; SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", SCTP_LOG_EVENT_RWND, from, sctp_clog.x.misc.log1, sctp_clog.x.misc.log2, sctp_clog.x.misc.log3, sctp_clog.x.misc.log4); } void sctp_log_rwnd_set(uint8_t from, uint32_t peers_rwnd, uint32_t flight_size, uint32_t overhead, uint32_t a_rwndval) { struct sctp_cwnd_log sctp_clog; sctp_clog.x.rwnd.rwnd = peers_rwnd; sctp_clog.x.rwnd.send_size = flight_size; sctp_clog.x.rwnd.overhead = overhead; sctp_clog.x.rwnd.new_rwnd = a_rwndval; SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", SCTP_LOG_EVENT_RWND, from, sctp_clog.x.misc.log1, sctp_clog.x.misc.log2, sctp_clog.x.misc.log3, sctp_clog.x.misc.log4); } #ifdef SCTP_MBCNT_LOGGING static void sctp_log_mbcnt(uint8_t from, uint32_t total_oq, uint32_t book, uint32_t total_mbcnt_q, uint32_t mbcnt) { struct sctp_cwnd_log sctp_clog; sctp_clog.x.mbcnt.total_queue_size = total_oq; sctp_clog.x.mbcnt.size_change = book; sctp_clog.x.mbcnt.total_queue_mb_size = total_mbcnt_q; sctp_clog.x.mbcnt.mbcnt_change = mbcnt; SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", SCTP_LOG_EVENT_MBCNT, from, sctp_clog.x.misc.log1, sctp_clog.x.misc.log2, sctp_clog.x.misc.log3, sctp_clog.x.misc.log4); } #endif void sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d) { SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", SCTP_LOG_MISC_EVENT, from, a, b, c, d); } void sctp_wakeup_log(struct sctp_tcb *stcb, uint32_t wake_cnt, int from) { struct sctp_cwnd_log sctp_clog; sctp_clog.x.wake.stcb = (void *)stcb; sctp_clog.x.wake.wake_cnt = wake_cnt; sctp_clog.x.wake.flight = stcb->asoc.total_flight_count; sctp_clog.x.wake.send_q = stcb->asoc.send_queue_cnt; sctp_clog.x.wake.sent_q = stcb->asoc.sent_queue_cnt; if (stcb->asoc.stream_queue_cnt < 0xff) sctp_clog.x.wake.stream_qcnt = (uint8_t) stcb->asoc.stream_queue_cnt; else sctp_clog.x.wake.stream_qcnt = 0xff; if (stcb->asoc.chunks_on_out_queue < 0xff) sctp_clog.x.wake.chunks_on_oque = (uint8_t) stcb->asoc.chunks_on_out_queue; else sctp_clog.x.wake.chunks_on_oque = 0xff; sctp_clog.x.wake.sctpflags = 0; /* set in the defered mode stuff */ if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) sctp_clog.x.wake.sctpflags |= 1; if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT) sctp_clog.x.wake.sctpflags |= 2; if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT) sctp_clog.x.wake.sctpflags |= 4; /* what about the sb */ if (stcb->sctp_socket) { struct socket *so = stcb->sctp_socket; sctp_clog.x.wake.sbflags = (uint8_t) ((so->so_snd.sb_flags & 0x00ff)); } else { sctp_clog.x.wake.sbflags = 0xff; } SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", SCTP_LOG_EVENT_WAKE, from, sctp_clog.x.misc.log1, sctp_clog.x.misc.log2, sctp_clog.x.misc.log3, sctp_clog.x.misc.log4); } void sctp_log_block(uint8_t from, struct sctp_association *asoc, size_t sendlen) { struct sctp_cwnd_log sctp_clog; sctp_clog.x.blk.onsb = asoc->total_output_queue_size; sctp_clog.x.blk.send_sent_qcnt = (uint16_t) (asoc->send_queue_cnt + asoc->sent_queue_cnt); sctp_clog.x.blk.peer_rwnd = asoc->peers_rwnd; sctp_clog.x.blk.stream_qcnt = (uint16_t) asoc->stream_queue_cnt; sctp_clog.x.blk.chunks_on_oque = (uint16_t) asoc->chunks_on_out_queue; sctp_clog.x.blk.flight_size = (uint16_t) (asoc->total_flight / 1024); sctp_clog.x.blk.sndlen = (uint32_t) sendlen; SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x", SCTP_LOG_EVENT_BLOCK, from, sctp_clog.x.misc.log1, sctp_clog.x.misc.log2, sctp_clog.x.misc.log3, sctp_clog.x.misc.log4); } int sctp_fill_stat_log(void *optval SCTP_UNUSED, size_t *optsize SCTP_UNUSED) { /* May need to fix this if ktrdump does not work */ return (0); } #ifdef SCTP_AUDITING_ENABLED uint8_t sctp_audit_data[SCTP_AUDIT_SIZE][2]; static int sctp_audit_indx = 0; static void sctp_print_audit_report(void) { int i; int cnt; cnt = 0; for (i = sctp_audit_indx; i < SCTP_AUDIT_SIZE; i++) { if ((sctp_audit_data[i][0] == 0xe0) && (sctp_audit_data[i][1] == 0x01)) { cnt = 0; SCTP_PRINTF("\n"); } else if (sctp_audit_data[i][0] == 0xf0) { cnt = 0; SCTP_PRINTF("\n"); } else if ((sctp_audit_data[i][0] == 0xc0) && (sctp_audit_data[i][1] == 0x01)) { SCTP_PRINTF("\n"); cnt = 0; } SCTP_PRINTF("%2.2x%2.2x ", (uint32_t) sctp_audit_data[i][0], (uint32_t) sctp_audit_data[i][1]); cnt++; if ((cnt % 14) == 0) SCTP_PRINTF("\n"); } for (i = 0; i < sctp_audit_indx; i++) { if ((sctp_audit_data[i][0] == 0xe0) && (sctp_audit_data[i][1] == 0x01)) { cnt = 0; SCTP_PRINTF("\n"); } else if (sctp_audit_data[i][0] == 0xf0) { cnt = 0; SCTP_PRINTF("\n"); } else if ((sctp_audit_data[i][0] == 0xc0) && (sctp_audit_data[i][1] == 0x01)) { SCTP_PRINTF("\n"); cnt = 0; } SCTP_PRINTF("%2.2x%2.2x ", (uint32_t) sctp_audit_data[i][0], (uint32_t) sctp_audit_data[i][1]); cnt++; if ((cnt % 14) == 0) SCTP_PRINTF("\n"); } SCTP_PRINTF("\n"); } void sctp_auditing(int from, struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sctp_nets *net) { int resend_cnt, tot_out, rep, tot_book_cnt; struct sctp_nets *lnet; struct sctp_tmit_chunk *chk; sctp_audit_data[sctp_audit_indx][0] = 0xAA; sctp_audit_data[sctp_audit_indx][1] = 0x000000ff & from; sctp_audit_indx++; if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { sctp_audit_indx = 0; } if (inp == NULL) { sctp_audit_data[sctp_audit_indx][0] = 0xAF; sctp_audit_data[sctp_audit_indx][1] = 0x01; sctp_audit_indx++; if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { sctp_audit_indx = 0; } return; } if (stcb == NULL) { sctp_audit_data[sctp_audit_indx][0] = 0xAF; sctp_audit_data[sctp_audit_indx][1] = 0x02; sctp_audit_indx++; if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { sctp_audit_indx = 0; } return; } sctp_audit_data[sctp_audit_indx][0] = 0xA1; sctp_audit_data[sctp_audit_indx][1] = (0x000000ff & stcb->asoc.sent_queue_retran_cnt); sctp_audit_indx++; if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { sctp_audit_indx = 0; } rep = 0; tot_book_cnt = 0; resend_cnt = tot_out = 0; TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) { if (chk->sent == SCTP_DATAGRAM_RESEND) { resend_cnt++; } else if (chk->sent < SCTP_DATAGRAM_RESEND) { tot_out += chk->book_size; tot_book_cnt++; } } if (resend_cnt != stcb->asoc.sent_queue_retran_cnt) { sctp_audit_data[sctp_audit_indx][0] = 0xAF; sctp_audit_data[sctp_audit_indx][1] = 0xA1; sctp_audit_indx++; if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { sctp_audit_indx = 0; } SCTP_PRINTF("resend_cnt:%d asoc-tot:%d\n", resend_cnt, stcb->asoc.sent_queue_retran_cnt); rep = 1; stcb->asoc.sent_queue_retran_cnt = resend_cnt; sctp_audit_data[sctp_audit_indx][0] = 0xA2; sctp_audit_data[sctp_audit_indx][1] = (0x000000ff & stcb->asoc.sent_queue_retran_cnt); sctp_audit_indx++; if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { sctp_audit_indx = 0; } } if (tot_out != stcb->asoc.total_flight) { sctp_audit_data[sctp_audit_indx][0] = 0xAF; sctp_audit_data[sctp_audit_indx][1] = 0xA2; sctp_audit_indx++; if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { sctp_audit_indx = 0; } rep = 1; SCTP_PRINTF("tot_flt:%d asoc_tot:%d\n", tot_out, (int)stcb->asoc.total_flight); stcb->asoc.total_flight = tot_out; } if (tot_book_cnt != stcb->asoc.total_flight_count) { sctp_audit_data[sctp_audit_indx][0] = 0xAF; sctp_audit_data[sctp_audit_indx][1] = 0xA5; sctp_audit_indx++; if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { sctp_audit_indx = 0; } rep = 1; SCTP_PRINTF("tot_flt_book:%d\n", tot_book_cnt); stcb->asoc.total_flight_count = tot_book_cnt; } tot_out = 0; TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) { tot_out += lnet->flight_size; } if (tot_out != stcb->asoc.total_flight) { sctp_audit_data[sctp_audit_indx][0] = 0xAF; sctp_audit_data[sctp_audit_indx][1] = 0xA3; sctp_audit_indx++; if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { sctp_audit_indx = 0; } rep = 1; SCTP_PRINTF("real flight:%d net total was %d\n", stcb->asoc.total_flight, tot_out); /* now corrective action */ TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) { tot_out = 0; TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) { if ((chk->whoTo == lnet) && (chk->sent < SCTP_DATAGRAM_RESEND)) { tot_out += chk->book_size; } } if (lnet->flight_size != tot_out) { SCTP_PRINTF("net:%p flight was %d corrected to %d\n", (void *)lnet, lnet->flight_size, tot_out); lnet->flight_size = tot_out; } } } if (rep) { sctp_print_audit_report(); } } void sctp_audit_log(uint8_t ev, uint8_t fd) { sctp_audit_data[sctp_audit_indx][0] = ev; sctp_audit_data[sctp_audit_indx][1] = fd; sctp_audit_indx++; if (sctp_audit_indx >= SCTP_AUDIT_SIZE) { sctp_audit_indx = 0; } } #endif /* * sctp_stop_timers_for_shutdown() should be called * when entering the SHUTDOWN_SENT or SHUTDOWN_ACK_SENT * state to make sure that all timers are stopped. */ void sctp_stop_timers_for_shutdown(struct sctp_tcb *stcb) { struct sctp_association *asoc; struct sctp_nets *net; asoc = &stcb->asoc; (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer); (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer); (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer); (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer); (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer); TAILQ_FOREACH(net, &asoc->nets, sctp_next) { (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer); (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer); } } /* * a list of sizes based on typical mtu's, used only if next hop size not * returned. */ static uint32_t sctp_mtu_sizes[] = { 68, 296, 508, 512, 544, 576, 1006, 1492, 1500, 1536, 2002, 2048, 4352, 4464, 8166, 17914, 32000, 65535 }; /* * Return the largest MTU smaller than val. If there is no * entry, just return val. */ uint32_t sctp_get_prev_mtu(uint32_t val) { uint32_t i; if (val <= sctp_mtu_sizes[0]) { return (val); } for (i = 1; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) { if (val <= sctp_mtu_sizes[i]) { break; } } return (sctp_mtu_sizes[i - 1]); } /* * Return the smallest MTU larger than val. If there is no * entry, just return val. */ uint32_t sctp_get_next_mtu(uint32_t val) { /* select another MTU that is just bigger than this one */ uint32_t i; for (i = 0; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) { if (val < sctp_mtu_sizes[i]) { return (sctp_mtu_sizes[i]); } } return (val); } void sctp_fill_random_store(struct sctp_pcb *m) { /* * Here we use the MD5/SHA-1 to hash with our good randomNumbers and * our counter. The result becomes our good random numbers and we * then setup to give these out. Note that we do no locking to * protect this. This is ok, since if competing folks call this we * will get more gobbled gook in the random store which is what we * want. There is a danger that two guys will use the same random * numbers, but thats ok too since that is random as well :-> */ m->store_at = 0; (void)sctp_hmac(SCTP_HMAC, (uint8_t *) m->random_numbers, sizeof(m->random_numbers), (uint8_t *) & m->random_counter, sizeof(m->random_counter), (uint8_t *) m->random_store); m->random_counter++; } uint32_t sctp_select_initial_TSN(struct sctp_pcb *inp) { /* * A true implementation should use random selection process to get * the initial stream sequence number, using RFC1750 as a good * guideline */ uint32_t x, *xp; uint8_t *p; int store_at, new_store; if (inp->initial_sequence_debug != 0) { uint32_t ret; ret = inp->initial_sequence_debug; inp->initial_sequence_debug++; return (ret); } retry: store_at = inp->store_at; new_store = store_at + sizeof(uint32_t); if (new_store >= (SCTP_SIGNATURE_SIZE - 3)) { new_store = 0; } if (!atomic_cmpset_int(&inp->store_at, store_at, new_store)) { goto retry; } if (new_store == 0) { /* Refill the random store */ sctp_fill_random_store(inp); } p = &inp->random_store[store_at]; xp = (uint32_t *) p; x = *xp; return (x); } uint32_t sctp_select_a_tag(struct sctp_inpcb *inp, uint16_t lport, uint16_t rport, int check) { uint32_t x; struct timeval now; if (check) { (void)SCTP_GETTIME_TIMEVAL(&now); } for (;;) { x = sctp_select_initial_TSN(&inp->sctp_ep); if (x == 0) { /* we never use 0 */ continue; } if (!check || sctp_is_vtag_good(x, lport, rport, &now)) { break; } } return (x); } int32_t sctp_map_assoc_state(int kernel_state) { int32_t user_state; if (kernel_state & SCTP_STATE_WAS_ABORTED) { user_state = SCTP_CLOSED; } else if (kernel_state & SCTP_STATE_SHUTDOWN_PENDING) { user_state = SCTP_SHUTDOWN_PENDING; } else { switch (kernel_state & SCTP_STATE_MASK) { case SCTP_STATE_EMPTY: user_state = SCTP_CLOSED; break; case SCTP_STATE_INUSE: user_state = SCTP_CLOSED; break; case SCTP_STATE_COOKIE_WAIT: user_state = SCTP_COOKIE_WAIT; break; case SCTP_STATE_COOKIE_ECHOED: user_state = SCTP_COOKIE_ECHOED; break; case SCTP_STATE_OPEN: user_state = SCTP_ESTABLISHED; break; case SCTP_STATE_SHUTDOWN_SENT: user_state = SCTP_SHUTDOWN_SENT; break; case SCTP_STATE_SHUTDOWN_RECEIVED: user_state = SCTP_SHUTDOWN_RECEIVED; break; case SCTP_STATE_SHUTDOWN_ACK_SENT: user_state = SCTP_SHUTDOWN_ACK_SENT; break; default: user_state = SCTP_CLOSED; break; } } return (user_state); } int sctp_init_asoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint32_t override_tag, uint32_t vrf_id, uint16_t o_strms) { struct sctp_association *asoc; /* * Anything set to zero is taken care of by the allocation routine's * bzero */ /* * Up front select what scoping to apply on addresses I tell my peer * Not sure what to do with these right now, we will need to come up * with a way to set them. We may need to pass them through from the * caller in the sctp_aloc_assoc() function. */ int i; #if defined(SCTP_DETAILED_STR_STATS) int j; #endif asoc = &stcb->asoc; /* init all variables to a known value. */ SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_INUSE); asoc->max_burst = inp->sctp_ep.max_burst; asoc->fr_max_burst = inp->sctp_ep.fr_max_burst; asoc->heart_beat_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]); asoc->cookie_life = inp->sctp_ep.def_cookie_life; asoc->sctp_cmt_on_off = inp->sctp_cmt_on_off; asoc->ecn_supported = inp->ecn_supported; asoc->prsctp_supported = inp->prsctp_supported; + asoc->idata_supported = inp->idata_supported; asoc->auth_supported = inp->auth_supported; asoc->asconf_supported = inp->asconf_supported; asoc->reconfig_supported = inp->reconfig_supported; asoc->nrsack_supported = inp->nrsack_supported; asoc->pktdrop_supported = inp->pktdrop_supported; + asoc->idata_supported = inp->idata_supported; asoc->sctp_cmt_pf = (uint8_t) 0; asoc->sctp_frag_point = inp->sctp_frag_point; asoc->sctp_features = inp->sctp_features; asoc->default_dscp = inp->sctp_ep.default_dscp; asoc->max_cwnd = inp->max_cwnd; #ifdef INET6 if (inp->sctp_ep.default_flowlabel) { asoc->default_flowlabel = inp->sctp_ep.default_flowlabel; } else { if (inp->ip_inp.inp.inp_flags & IN6P_AUTOFLOWLABEL) { asoc->default_flowlabel = sctp_select_initial_TSN(&inp->sctp_ep); asoc->default_flowlabel &= 0x000fffff; asoc->default_flowlabel |= 0x80000000; } else { asoc->default_flowlabel = 0; } } #endif asoc->sb_send_resv = 0; if (override_tag) { asoc->my_vtag = override_tag; } else { asoc->my_vtag = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 1); } /* Get the nonce tags */ asoc->my_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0); asoc->peer_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0); asoc->vrf_id = vrf_id; #ifdef SCTP_ASOCLOG_OF_TSNS asoc->tsn_in_at = 0; asoc->tsn_out_at = 0; asoc->tsn_in_wrapped = 0; asoc->tsn_out_wrapped = 0; asoc->cumack_log_at = 0; asoc->cumack_log_atsnt = 0; #endif #ifdef SCTP_FS_SPEC_LOG asoc->fs_index = 0; #endif asoc->refcnt = 0; asoc->assoc_up_sent = 0; asoc->asconf_seq_out = asoc->str_reset_seq_out = asoc->init_seq_number = asoc->sending_seq = sctp_select_initial_TSN(&inp->sctp_ep); asoc->asconf_seq_out_acked = asoc->asconf_seq_out - 1; /* we are optimisitic here */ asoc->peer_supports_nat = 0; asoc->sent_queue_retran_cnt = 0; /* for CMT */ asoc->last_net_cmt_send_started = NULL; /* This will need to be adjusted */ asoc->last_acked_seq = asoc->init_seq_number - 1; asoc->advanced_peer_ack_point = asoc->last_acked_seq; asoc->asconf_seq_in = asoc->last_acked_seq; /* here we are different, we hold the next one we expect */ asoc->str_reset_seq_in = asoc->last_acked_seq + 1; asoc->initial_init_rto_max = inp->sctp_ep.initial_init_rto_max; asoc->initial_rto = inp->sctp_ep.initial_rto; asoc->max_init_times = inp->sctp_ep.max_init_times; asoc->max_send_times = inp->sctp_ep.max_send_times; asoc->def_net_failure = inp->sctp_ep.def_net_failure; asoc->def_net_pf_threshold = inp->sctp_ep.def_net_pf_threshold; asoc->free_chunk_cnt = 0; asoc->iam_blocking = 0; asoc->context = inp->sctp_context; asoc->local_strreset_support = inp->local_strreset_support; asoc->def_send = inp->def_send; asoc->delayed_ack = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]); asoc->sack_freq = inp->sctp_ep.sctp_sack_freq; asoc->pr_sctp_cnt = 0; asoc->total_output_queue_size = 0; if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { asoc->scope.ipv6_addr_legal = 1; if (SCTP_IPV6_V6ONLY(inp) == 0) { asoc->scope.ipv4_addr_legal = 1; } else { asoc->scope.ipv4_addr_legal = 0; } } else { asoc->scope.ipv6_addr_legal = 0; asoc->scope.ipv4_addr_legal = 1; } asoc->my_rwnd = max(SCTP_SB_LIMIT_RCV(inp->sctp_socket), SCTP_MINIMAL_RWND); asoc->peers_rwnd = SCTP_SB_LIMIT_RCV(inp->sctp_socket); asoc->smallest_mtu = inp->sctp_frag_point; asoc->minrto = inp->sctp_ep.sctp_minrto; asoc->maxrto = inp->sctp_ep.sctp_maxrto; asoc->locked_on_sending = NULL; asoc->stream_locked_on = 0; asoc->ecn_echo_cnt_onq = 0; asoc->stream_locked = 0; asoc->send_sack = 1; LIST_INIT(&asoc->sctp_restricted_addrs); TAILQ_INIT(&asoc->nets); TAILQ_INIT(&asoc->pending_reply_queue); TAILQ_INIT(&asoc->asconf_ack_sent); /* Setup to fill the hb random cache at first HB */ asoc->hb_random_idx = 4; asoc->sctp_autoclose_ticks = inp->sctp_ep.auto_close_time; stcb->asoc.congestion_control_module = inp->sctp_ep.sctp_default_cc_module; stcb->asoc.cc_functions = sctp_cc_functions[inp->sctp_ep.sctp_default_cc_module]; stcb->asoc.stream_scheduling_module = inp->sctp_ep.sctp_default_ss_module; stcb->asoc.ss_functions = sctp_ss_functions[inp->sctp_ep.sctp_default_ss_module]; /* * Now the stream parameters, here we allocate space for all streams * that we request by default. */ asoc->strm_realoutsize = asoc->streamoutcnt = asoc->pre_open_streams = o_strms; SCTP_MALLOC(asoc->strmout, struct sctp_stream_out *, asoc->streamoutcnt * sizeof(struct sctp_stream_out), SCTP_M_STRMO); if (asoc->strmout == NULL) { /* big trouble no memory */ SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM); return (ENOMEM); } for (i = 0; i < asoc->streamoutcnt; i++) { /* * inbound side must be set to 0xffff, also NOTE when we get * the INIT-ACK back (for INIT sender) we MUST reduce the * count (streamoutcnt) but first check if we sent to any of * the upper streams that were dropped (if some were). Those * that were dropped must be notified to the upper layer as * failed to send. */ asoc->strmout[i].next_sequence_send = 0x0; TAILQ_INIT(&asoc->strmout[i].outqueue); asoc->strmout[i].chunks_on_queues = 0; #if defined(SCTP_DETAILED_STR_STATS) for (j = 0; j < SCTP_PR_SCTP_MAX + 1; j++) { asoc->strmout[i].abandoned_sent[j] = 0; asoc->strmout[i].abandoned_unsent[j] = 0; } #else asoc->strmout[i].abandoned_sent[0] = 0; asoc->strmout[i].abandoned_unsent[0] = 0; #endif asoc->strmout[i].stream_no = i; asoc->strmout[i].last_msg_incomplete = 0; asoc->strmout[i].state = SCTP_STREAM_OPENING; asoc->ss_functions.sctp_ss_init_stream(&asoc->strmout[i], NULL); } asoc->ss_functions.sctp_ss_init(stcb, asoc, 0); /* Now the mapping array */ asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY; SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size, SCTP_M_MAP); if (asoc->mapping_array == NULL) { SCTP_FREE(asoc->strmout, SCTP_M_STRMO); SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM); return (ENOMEM); } memset(asoc->mapping_array, 0, asoc->mapping_array_size); SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size, SCTP_M_MAP); if (asoc->nr_mapping_array == NULL) { SCTP_FREE(asoc->strmout, SCTP_M_STRMO); SCTP_FREE(asoc->mapping_array, SCTP_M_MAP); SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM); return (ENOMEM); } memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size); /* Now the init of the other outqueues */ TAILQ_INIT(&asoc->free_chunks); TAILQ_INIT(&asoc->control_send_queue); TAILQ_INIT(&asoc->asconf_send_queue); TAILQ_INIT(&asoc->send_queue); TAILQ_INIT(&asoc->sent_queue); - TAILQ_INIT(&asoc->reasmqueue); TAILQ_INIT(&asoc->resetHead); asoc->max_inbound_streams = inp->sctp_ep.max_open_streams_intome; TAILQ_INIT(&asoc->asconf_queue); /* authentication fields */ asoc->authinfo.random = NULL; asoc->authinfo.active_keyid = 0; asoc->authinfo.assoc_key = NULL; asoc->authinfo.assoc_keyid = 0; asoc->authinfo.recv_key = NULL; asoc->authinfo.recv_keyid = 0; LIST_INIT(&asoc->shared_keys); asoc->marked_retrans = 0; asoc->port = inp->sctp_ep.port; asoc->timoinit = 0; asoc->timodata = 0; asoc->timosack = 0; asoc->timoshutdown = 0; asoc->timoheartbeat = 0; asoc->timocookie = 0; asoc->timoshutdownack = 0; (void)SCTP_GETTIME_TIMEVAL(&asoc->start_time); asoc->discontinuity_time = asoc->start_time; for (i = 0; i < SCTP_PR_SCTP_MAX + 1; i++) { asoc->abandoned_unsent[i] = 0; asoc->abandoned_sent[i] = 0; } /* * sa_ignore MEMLEAK {memory is put in the assoc mapping array and * freed later when the association is freed. */ return (0); } void sctp_print_mapping_array(struct sctp_association *asoc) { unsigned int i, limit; SCTP_PRINTF("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n", asoc->mapping_array_size, asoc->mapping_array_base_tsn, asoc->cumulative_tsn, asoc->highest_tsn_inside_map, asoc->highest_tsn_inside_nr_map); for (limit = asoc->mapping_array_size; limit > 1; limit--) { if (asoc->mapping_array[limit - 1] != 0) { break; } } SCTP_PRINTF("Renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit); for (i = 0; i < limit; i++) { SCTP_PRINTF("%2.2x%c", asoc->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n'); } if (limit % 16) SCTP_PRINTF("\n"); for (limit = asoc->mapping_array_size; limit > 1; limit--) { if (asoc->nr_mapping_array[limit - 1]) { break; } } SCTP_PRINTF("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit); for (i = 0; i < limit; i++) { SCTP_PRINTF("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ' : '\n'); } if (limit % 16) SCTP_PRINTF("\n"); } int sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed) { /* mapping array needs to grow */ uint8_t *new_array1, *new_array2; uint32_t new_size; new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR); SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP); SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP); if ((new_array1 == NULL) || (new_array2 == NULL)) { /* can't get more, forget it */ SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size); if (new_array1) { SCTP_FREE(new_array1, SCTP_M_MAP); } if (new_array2) { SCTP_FREE(new_array2, SCTP_M_MAP); } return (-1); } memset(new_array1, 0, new_size); memset(new_array2, 0, new_size); memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size); memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size); SCTP_FREE(asoc->mapping_array, SCTP_M_MAP); SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP); asoc->mapping_array = new_array1; asoc->nr_mapping_array = new_array2; asoc->mapping_array_size = new_size; return (0); } static void sctp_iterator_work(struct sctp_iterator *it) { int iteration_count = 0; int inp_skip = 0; int first_in = 1; struct sctp_inpcb *tinp; SCTP_INP_INFO_RLOCK(); SCTP_ITERATOR_LOCK(); if (it->inp) { SCTP_INP_RLOCK(it->inp); SCTP_INP_DECR_REF(it->inp); } if (it->inp == NULL) { /* iterator is complete */ done_with_iterator: SCTP_ITERATOR_UNLOCK(); SCTP_INP_INFO_RUNLOCK(); if (it->function_atend != NULL) { (*it->function_atend) (it->pointer, it->val); } SCTP_FREE(it, SCTP_M_ITER); return; } select_a_new_ep: if (first_in) { first_in = 0; } else { SCTP_INP_RLOCK(it->inp); } while (((it->pcb_flags) && ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) || ((it->pcb_features) && ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) { /* endpoint flags or features don't match, so keep looking */ if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) { SCTP_INP_RUNLOCK(it->inp); goto done_with_iterator; } tinp = it->inp; it->inp = LIST_NEXT(it->inp, sctp_list); SCTP_INP_RUNLOCK(tinp); if (it->inp == NULL) { goto done_with_iterator; } SCTP_INP_RLOCK(it->inp); } /* now go through each assoc which is in the desired state */ if (it->done_current_ep == 0) { if (it->function_inp != NULL) inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val); it->done_current_ep = 1; } if (it->stcb == NULL) { /* run the per instance function */ it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list); } if ((inp_skip) || it->stcb == NULL) { if (it->function_inp_end != NULL) { inp_skip = (*it->function_inp_end) (it->inp, it->pointer, it->val); } SCTP_INP_RUNLOCK(it->inp); goto no_stcb; } while (it->stcb) { SCTP_TCB_LOCK(it->stcb); if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) { /* not in the right state... keep looking */ SCTP_TCB_UNLOCK(it->stcb); goto next_assoc; } /* see if we have limited out the iterator loop */ iteration_count++; if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) { /* Pause to let others grab the lock */ atomic_add_int(&it->stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(it->stcb); SCTP_INP_INCR_REF(it->inp); SCTP_INP_RUNLOCK(it->inp); SCTP_ITERATOR_UNLOCK(); SCTP_INP_INFO_RUNLOCK(); SCTP_INP_INFO_RLOCK(); SCTP_ITERATOR_LOCK(); if (sctp_it_ctl.iterator_flags) { /* We won't be staying here */ SCTP_INP_DECR_REF(it->inp); atomic_add_int(&it->stcb->asoc.refcnt, -1); if (sctp_it_ctl.iterator_flags & SCTP_ITERATOR_STOP_CUR_IT) { sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT; goto done_with_iterator; } if (sctp_it_ctl.iterator_flags & SCTP_ITERATOR_STOP_CUR_INP) { sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP; goto no_stcb; } /* If we reach here huh? */ SCTP_PRINTF("Unknown it ctl flag %x\n", sctp_it_ctl.iterator_flags); sctp_it_ctl.iterator_flags = 0; } SCTP_INP_RLOCK(it->inp); SCTP_INP_DECR_REF(it->inp); SCTP_TCB_LOCK(it->stcb); atomic_add_int(&it->stcb->asoc.refcnt, -1); iteration_count = 0; } /* run function on this one */ (*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val); /* * we lie here, it really needs to have its own type but * first I must verify that this won't effect things :-0 */ if (it->no_chunk_output == 0) sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED); SCTP_TCB_UNLOCK(it->stcb); next_assoc: it->stcb = LIST_NEXT(it->stcb, sctp_tcblist); if (it->stcb == NULL) { /* Run last function */ if (it->function_inp_end != NULL) { inp_skip = (*it->function_inp_end) (it->inp, it->pointer, it->val); } } } SCTP_INP_RUNLOCK(it->inp); no_stcb: /* done with all assocs on this endpoint, move on to next endpoint */ it->done_current_ep = 0; if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) { it->inp = NULL; } else { it->inp = LIST_NEXT(it->inp, sctp_list); } if (it->inp == NULL) { goto done_with_iterator; } goto select_a_new_ep; } void sctp_iterator_worker(void) { struct sctp_iterator *it, *nit; /* This function is called with the WQ lock in place */ sctp_it_ctl.iterator_running = 1; TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) { sctp_it_ctl.cur_it = it; /* now lets work on this one */ TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr); SCTP_IPI_ITERATOR_WQ_UNLOCK(); CURVNET_SET(it->vn); sctp_iterator_work(it); sctp_it_ctl.cur_it = NULL; CURVNET_RESTORE(); SCTP_IPI_ITERATOR_WQ_LOCK(); /* sa_ignore FREED_MEMORY */ } sctp_it_ctl.iterator_running = 0; return; } static void sctp_handle_addr_wq(void) { /* deal with the ADDR wq from the rtsock calls */ struct sctp_laddr *wi, *nwi; struct sctp_asconf_iterator *asc; SCTP_MALLOC(asc, struct sctp_asconf_iterator *, sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT); if (asc == NULL) { /* Try later, no memory */ sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ, (struct sctp_inpcb *)NULL, (struct sctp_tcb *)NULL, (struct sctp_nets *)NULL); return; } LIST_INIT(&asc->list_of_work); asc->cnt = 0; SCTP_WQ_ADDR_LOCK(); LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) { LIST_REMOVE(wi, sctp_nxt_addr); LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr); asc->cnt++; } SCTP_WQ_ADDR_UNLOCK(); if (asc->cnt == 0) { SCTP_FREE(asc, SCTP_M_ASC_IT); } else { int ret; ret = sctp_initiate_iterator(sctp_asconf_iterator_ep, sctp_asconf_iterator_stcb, NULL, /* No ep end for boundall */ SCTP_PCB_FLAGS_BOUNDALL, SCTP_PCB_ANY_FEATURES, SCTP_ASOC_ANY_STATE, (void *)asc, 0, sctp_asconf_iterator_end, NULL, 0); if (ret) { SCTP_PRINTF("Failed to initiate iterator for handle_addr_wq\n"); /* * Freeing if we are stopping or put back on the * addr_wq. */ if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) { sctp_asconf_iterator_end(asc, 0); } else { SCTP_WQ_ADDR_LOCK(); LIST_FOREACH(wi, &asc->list_of_work, sctp_nxt_addr) { LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr); } SCTP_WQ_ADDR_UNLOCK(); SCTP_FREE(asc, SCTP_M_ASC_IT); } } } } void sctp_timeout_handler(void *t) { struct sctp_inpcb *inp; struct sctp_tcb *stcb; struct sctp_nets *net; struct sctp_timer *tmr; struct mbuf *op_err; #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) struct socket *so; #endif int did_output; int type; tmr = (struct sctp_timer *)t; inp = (struct sctp_inpcb *)tmr->ep; stcb = (struct sctp_tcb *)tmr->tcb; net = (struct sctp_nets *)tmr->net; CURVNET_SET((struct vnet *)tmr->vnet); did_output = 1; #ifdef SCTP_AUDITING_ENABLED sctp_audit_log(0xF0, (uint8_t) tmr->type); sctp_auditing(3, inp, stcb, net); #endif /* sanity checks... */ if (tmr->self != (void *)tmr) { /* * SCTP_PRINTF("Stale SCTP timer fired (%p), ignoring...\n", * (void *)tmr); */ CURVNET_RESTORE(); return; } tmr->stopped_from = 0xa001; if (!SCTP_IS_TIMER_TYPE_VALID(tmr->type)) { /* * SCTP_PRINTF("SCTP timer fired with invalid type: 0x%x\n", * tmr->type); */ CURVNET_RESTORE(); return; } tmr->stopped_from = 0xa002; if ((tmr->type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) { CURVNET_RESTORE(); return; } /* if this is an iterator timeout, get the struct and clear inp */ tmr->stopped_from = 0xa003; if (inp) { SCTP_INP_INCR_REF(inp); if ((inp->sctp_socket == NULL) && ((tmr->type != SCTP_TIMER_TYPE_INPKILL) && (tmr->type != SCTP_TIMER_TYPE_INIT) && (tmr->type != SCTP_TIMER_TYPE_SEND) && (tmr->type != SCTP_TIMER_TYPE_RECV) && (tmr->type != SCTP_TIMER_TYPE_HEARTBEAT) && (tmr->type != SCTP_TIMER_TYPE_SHUTDOWN) && (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNACK) && (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNGUARD) && (tmr->type != SCTP_TIMER_TYPE_ASOCKILL)) ) { SCTP_INP_DECR_REF(inp); CURVNET_RESTORE(); return; } } tmr->stopped_from = 0xa004; if (stcb) { atomic_add_int(&stcb->asoc.refcnt, 1); if (stcb->asoc.state == 0) { atomic_add_int(&stcb->asoc.refcnt, -1); if (inp) { SCTP_INP_DECR_REF(inp); } CURVNET_RESTORE(); return; } } type = tmr->type; tmr->stopped_from = 0xa005; SCTPDBG(SCTP_DEBUG_TIMER1, "Timer type %d goes off\n", type); if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) { if (inp) { SCTP_INP_DECR_REF(inp); } if (stcb) { atomic_add_int(&stcb->asoc.refcnt, -1); } CURVNET_RESTORE(); return; } tmr->stopped_from = 0xa006; if (stcb) { SCTP_TCB_LOCK(stcb); atomic_add_int(&stcb->asoc.refcnt, -1); if ((type != SCTP_TIMER_TYPE_ASOCKILL) && ((stcb->asoc.state == 0) || (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) { SCTP_TCB_UNLOCK(stcb); if (inp) { SCTP_INP_DECR_REF(inp); } CURVNET_RESTORE(); return; } } /* record in stopped what t-o occured */ tmr->stopped_from = type; /* mark as being serviced now */ if (SCTP_OS_TIMER_PENDING(&tmr->timer)) { /* * Callout has been rescheduled. */ goto get_out; } if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) { /* * Not active, so no action. */ goto get_out; } SCTP_OS_TIMER_DEACTIVATE(&tmr->timer); /* call the handler for the appropriate timer type */ switch (type) { case SCTP_TIMER_TYPE_ZERO_COPY: if (inp == NULL) { break; } if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) { SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket); } break; case SCTP_TIMER_TYPE_ZCOPY_SENDQ: if (inp == NULL) { break; } if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) { SCTP_ZERO_COPY_SENDQ_EVENT(inp, inp->sctp_socket); } break; case SCTP_TIMER_TYPE_ADDR_WQ: sctp_handle_addr_wq(); break; case SCTP_TIMER_TYPE_SEND: if ((stcb == NULL) || (inp == NULL)) { break; } SCTP_STAT_INCR(sctps_timodata); stcb->asoc.timodata++; stcb->asoc.num_send_timers_up--; if (stcb->asoc.num_send_timers_up < 0) { stcb->asoc.num_send_timers_up = 0; } SCTP_TCB_LOCK_ASSERT(stcb); if (sctp_t3rxt_timer(inp, stcb, net)) { /* no need to unlock on tcb its gone */ goto out_decr; } SCTP_TCB_LOCK_ASSERT(stcb); #ifdef SCTP_AUDITING_ENABLED sctp_auditing(4, inp, stcb, net); #endif sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED); if ((stcb->asoc.num_send_timers_up == 0) && (stcb->asoc.sent_queue_cnt > 0)) { struct sctp_tmit_chunk *chk; /* * safeguard. If there on some on the sent queue * somewhere but no timers running something is * wrong... so we start a timer on the first chunk * on the send queue on whatever net it is sent to. */ chk = TAILQ_FIRST(&stcb->asoc.sent_queue); sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb, chk->whoTo); } break; case SCTP_TIMER_TYPE_INIT: if ((stcb == NULL) || (inp == NULL)) { break; } SCTP_STAT_INCR(sctps_timoinit); stcb->asoc.timoinit++; if (sctp_t1init_timer(inp, stcb, net)) { /* no need to unlock on tcb its gone */ goto out_decr; } /* We do output but not here */ did_output = 0; break; case SCTP_TIMER_TYPE_RECV: if ((stcb == NULL) || (inp == NULL)) { break; } SCTP_STAT_INCR(sctps_timosack); stcb->asoc.timosack++; sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED); #ifdef SCTP_AUDITING_ENABLED sctp_auditing(4, inp, stcb, net); #endif sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED); break; case SCTP_TIMER_TYPE_SHUTDOWN: if ((stcb == NULL) || (inp == NULL)) { break; } if (sctp_shutdown_timer(inp, stcb, net)) { /* no need to unlock on tcb its gone */ goto out_decr; } SCTP_STAT_INCR(sctps_timoshutdown); stcb->asoc.timoshutdown++; #ifdef SCTP_AUDITING_ENABLED sctp_auditing(4, inp, stcb, net); #endif sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED); break; case SCTP_TIMER_TYPE_HEARTBEAT: if ((stcb == NULL) || (inp == NULL) || (net == NULL)) { break; } SCTP_STAT_INCR(sctps_timoheartbeat); stcb->asoc.timoheartbeat++; if (sctp_heartbeat_timer(inp, stcb, net)) { /* no need to unlock on tcb its gone */ goto out_decr; } #ifdef SCTP_AUDITING_ENABLED sctp_auditing(4, inp, stcb, net); #endif if (!(net->dest_state & SCTP_ADDR_NOHB)) { sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net); sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED); } break; case SCTP_TIMER_TYPE_COOKIE: if ((stcb == NULL) || (inp == NULL)) { break; } if (sctp_cookie_timer(inp, stcb, net)) { /* no need to unlock on tcb its gone */ goto out_decr; } SCTP_STAT_INCR(sctps_timocookie); stcb->asoc.timocookie++; #ifdef SCTP_AUDITING_ENABLED sctp_auditing(4, inp, stcb, net); #endif /* * We consider T3 and Cookie timer pretty much the same with * respect to where from in chunk_output. */ sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED); break; case SCTP_TIMER_TYPE_NEWCOOKIE: { struct timeval tv; int i, secret; if (inp == NULL) { break; } SCTP_STAT_INCR(sctps_timosecret); (void)SCTP_GETTIME_TIMEVAL(&tv); SCTP_INP_WLOCK(inp); inp->sctp_ep.time_of_secret_change = tv.tv_sec; inp->sctp_ep.last_secret_number = inp->sctp_ep.current_secret_number; inp->sctp_ep.current_secret_number++; if (inp->sctp_ep.current_secret_number >= SCTP_HOW_MANY_SECRETS) { inp->sctp_ep.current_secret_number = 0; } secret = (int)inp->sctp_ep.current_secret_number; for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) { inp->sctp_ep.secret_key[secret][i] = sctp_select_initial_TSN(&inp->sctp_ep); } SCTP_INP_WUNLOCK(inp); sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, stcb, net); } did_output = 0; break; case SCTP_TIMER_TYPE_PATHMTURAISE: if ((stcb == NULL) || (inp == NULL)) { break; } SCTP_STAT_INCR(sctps_timopathmtu); sctp_pathmtu_timer(inp, stcb, net); did_output = 0; break; case SCTP_TIMER_TYPE_SHUTDOWNACK: if ((stcb == NULL) || (inp == NULL)) { break; } if (sctp_shutdownack_timer(inp, stcb, net)) { /* no need to unlock on tcb its gone */ goto out_decr; } SCTP_STAT_INCR(sctps_timoshutdownack); stcb->asoc.timoshutdownack++; #ifdef SCTP_AUDITING_ENABLED sctp_auditing(4, inp, stcb, net); #endif sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED); break; case SCTP_TIMER_TYPE_SHUTDOWNGUARD: if ((stcb == NULL) || (inp == NULL)) { break; } SCTP_STAT_INCR(sctps_timoshutdownguard); op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code), "Shutdown guard timer expired"); sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED); /* no need to unlock on tcb its gone */ goto out_decr; case SCTP_TIMER_TYPE_STRRESET: if ((stcb == NULL) || (inp == NULL)) { break; } if (sctp_strreset_timer(inp, stcb, net)) { /* no need to unlock on tcb its gone */ goto out_decr; } SCTP_STAT_INCR(sctps_timostrmrst); sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED); break; case SCTP_TIMER_TYPE_ASCONF: if ((stcb == NULL) || (inp == NULL)) { break; } if (sctp_asconf_timer(inp, stcb, net)) { /* no need to unlock on tcb its gone */ goto out_decr; } SCTP_STAT_INCR(sctps_timoasconf); #ifdef SCTP_AUDITING_ENABLED sctp_auditing(4, inp, stcb, net); #endif sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED); break; case SCTP_TIMER_TYPE_PRIM_DELETED: if ((stcb == NULL) || (inp == NULL)) { break; } sctp_delete_prim_timer(inp, stcb, net); SCTP_STAT_INCR(sctps_timodelprim); break; case SCTP_TIMER_TYPE_AUTOCLOSE: if ((stcb == NULL) || (inp == NULL)) { break; } SCTP_STAT_INCR(sctps_timoautoclose); sctp_autoclose_timer(inp, stcb, net); sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED); did_output = 0; break; case SCTP_TIMER_TYPE_ASOCKILL: if ((stcb == NULL) || (inp == NULL)) { break; } SCTP_STAT_INCR(sctps_timoassockill); /* Can we free it yet? */ SCTP_INP_DECR_REF(inp); sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_1); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) so = SCTP_INP_SO(inp); atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); #endif (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_2); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif /* * free asoc, always unlocks (or destroy's) so prevent * duplicate unlock or unlock of a free mtx :-0 */ stcb = NULL; goto out_no_decr; case SCTP_TIMER_TYPE_INPKILL: SCTP_STAT_INCR(sctps_timoinpkill); if (inp == NULL) { break; } /* * special case, take away our increment since WE are the * killer */ SCTP_INP_DECR_REF(inp); sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_3); sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, SCTP_CALLED_FROM_INPKILL_TIMER); inp = NULL; goto out_no_decr; default: SCTPDBG(SCTP_DEBUG_TIMER1, "sctp_timeout_handler:unknown timer %d\n", type); break; } #ifdef SCTP_AUDITING_ENABLED sctp_audit_log(0xF1, (uint8_t) type); if (inp) sctp_auditing(5, inp, stcb, net); #endif if ((did_output) && stcb) { /* * Now we need to clean up the control chunk chain if an * ECNE is on it. It must be marked as UNSENT again so next * call will continue to send it until such time that we get * a CWR, to remove it. It is, however, less likely that we * will find a ecn echo on the chain though. */ sctp_fix_ecn_echo(&stcb->asoc); } get_out: if (stcb) { SCTP_TCB_UNLOCK(stcb); } out_decr: if (inp) { SCTP_INP_DECR_REF(inp); } out_no_decr: SCTPDBG(SCTP_DEBUG_TIMER1, "Timer now complete (type = %d)\n", type); CURVNET_RESTORE(); } void sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sctp_nets *net) { uint32_t to_ticks; struct sctp_timer *tmr; if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) return; tmr = NULL; if (stcb) { SCTP_TCB_LOCK_ASSERT(stcb); } switch (t_type) { case SCTP_TIMER_TYPE_ZERO_COPY: tmr = &inp->sctp_ep.zero_copy_timer; to_ticks = SCTP_ZERO_COPY_TICK_DELAY; break; case SCTP_TIMER_TYPE_ZCOPY_SENDQ: tmr = &inp->sctp_ep.zero_copy_sendq_timer; to_ticks = SCTP_ZERO_COPY_SENDQ_TICK_DELAY; break; case SCTP_TIMER_TYPE_ADDR_WQ: /* Only 1 tick away :-) */ tmr = &SCTP_BASE_INFO(addr_wq_timer); to_ticks = SCTP_ADDRESS_TICK_DELAY; break; case SCTP_TIMER_TYPE_SEND: /* Here we use the RTO timer */ { int rto_val; if ((stcb == NULL) || (net == NULL)) { return; } tmr = &net->rxt_timer; if (net->RTO == 0) { rto_val = stcb->asoc.initial_rto; } else { rto_val = net->RTO; } to_ticks = MSEC_TO_TICKS(rto_val); } break; case SCTP_TIMER_TYPE_INIT: /* * Here we use the INIT timer default usually about 1 * minute. */ if ((stcb == NULL) || (net == NULL)) { return; } tmr = &net->rxt_timer; if (net->RTO == 0) { to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); } else { to_ticks = MSEC_TO_TICKS(net->RTO); } break; case SCTP_TIMER_TYPE_RECV: /* * Here we use the Delayed-Ack timer value from the inp * ususually about 200ms. */ if (stcb == NULL) { return; } tmr = &stcb->asoc.dack_timer; to_ticks = MSEC_TO_TICKS(stcb->asoc.delayed_ack); break; case SCTP_TIMER_TYPE_SHUTDOWN: /* Here we use the RTO of the destination. */ if ((stcb == NULL) || (net == NULL)) { return; } if (net->RTO == 0) { to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); } else { to_ticks = MSEC_TO_TICKS(net->RTO); } tmr = &net->rxt_timer; break; case SCTP_TIMER_TYPE_HEARTBEAT: /* * the net is used here so that we can add in the RTO. Even * though we use a different timer. We also add the HB timer * PLUS a random jitter. */ if ((stcb == NULL) || (net == NULL)) { return; } else { uint32_t rndval; uint32_t jitter; if ((net->dest_state & SCTP_ADDR_NOHB) && !(net->dest_state & SCTP_ADDR_UNCONFIRMED)) { return; } if (net->RTO == 0) { to_ticks = stcb->asoc.initial_rto; } else { to_ticks = net->RTO; } rndval = sctp_select_initial_TSN(&inp->sctp_ep); jitter = rndval % to_ticks; if (jitter >= (to_ticks >> 1)) { to_ticks = to_ticks + (jitter - (to_ticks >> 1)); } else { to_ticks = to_ticks - jitter; } if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) && !(net->dest_state & SCTP_ADDR_PF)) { to_ticks += net->heart_beat_delay; } /* * Now we must convert the to_ticks that are now in * ms to ticks. */ to_ticks = MSEC_TO_TICKS(to_ticks); tmr = &net->hb_timer; } break; case SCTP_TIMER_TYPE_COOKIE: /* * Here we can use the RTO timer from the network since one * RTT was compelete. If a retran happened then we will be * using the RTO initial value. */ if ((stcb == NULL) || (net == NULL)) { return; } if (net->RTO == 0) { to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); } else { to_ticks = MSEC_TO_TICKS(net->RTO); } tmr = &net->rxt_timer; break; case SCTP_TIMER_TYPE_NEWCOOKIE: /* * nothing needed but the endpoint here ususually about 60 * minutes. */ tmr = &inp->sctp_ep.signature_change; to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE]; break; case SCTP_TIMER_TYPE_ASOCKILL: if (stcb == NULL) { return; } tmr = &stcb->asoc.strreset_timer; to_ticks = MSEC_TO_TICKS(SCTP_ASOC_KILL_TIMEOUT); break; case SCTP_TIMER_TYPE_INPKILL: /* * The inp is setup to die. We re-use the signature_chage * timer since that has stopped and we are in the GONE * state. */ tmr = &inp->sctp_ep.signature_change; to_ticks = MSEC_TO_TICKS(SCTP_INP_KILL_TIMEOUT); break; case SCTP_TIMER_TYPE_PATHMTURAISE: /* * Here we use the value found in the EP for PMTU ususually * about 10 minutes. */ if ((stcb == NULL) || (net == NULL)) { return; } if (net->dest_state & SCTP_ADDR_NO_PMTUD) { return; } to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU]; tmr = &net->pmtu_timer; break; case SCTP_TIMER_TYPE_SHUTDOWNACK: /* Here we use the RTO of the destination */ if ((stcb == NULL) || (net == NULL)) { return; } if (net->RTO == 0) { to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); } else { to_ticks = MSEC_TO_TICKS(net->RTO); } tmr = &net->rxt_timer; break; case SCTP_TIMER_TYPE_SHUTDOWNGUARD: /* * Here we use the endpoints shutdown guard timer usually * about 3 minutes. */ if (stcb == NULL) { return; } if (inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] == 0) { to_ticks = 5 * MSEC_TO_TICKS(stcb->asoc.maxrto); } else { to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN]; } tmr = &stcb->asoc.shut_guard_timer; break; case SCTP_TIMER_TYPE_STRRESET: /* * Here the timer comes from the stcb but its value is from * the net's RTO. */ if ((stcb == NULL) || (net == NULL)) { return; } if (net->RTO == 0) { to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); } else { to_ticks = MSEC_TO_TICKS(net->RTO); } tmr = &stcb->asoc.strreset_timer; break; case SCTP_TIMER_TYPE_ASCONF: /* * Here the timer comes from the stcb but its value is from * the net's RTO. */ if ((stcb == NULL) || (net == NULL)) { return; } if (net->RTO == 0) { to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); } else { to_ticks = MSEC_TO_TICKS(net->RTO); } tmr = &stcb->asoc.asconf_timer; break; case SCTP_TIMER_TYPE_PRIM_DELETED: if ((stcb == NULL) || (net != NULL)) { return; } to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto); tmr = &stcb->asoc.delete_prim_timer; break; case SCTP_TIMER_TYPE_AUTOCLOSE: if (stcb == NULL) { return; } if (stcb->asoc.sctp_autoclose_ticks == 0) { /* * Really an error since stcb is NOT set to * autoclose */ return; } to_ticks = stcb->asoc.sctp_autoclose_ticks; tmr = &stcb->asoc.autoclose_timer; break; default: SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n", __func__, t_type); return; break; } if ((to_ticks <= 0) || (tmr == NULL)) { SCTPDBG(SCTP_DEBUG_TIMER1, "%s: %d:software error to_ticks:%d tmr:%p not set ??\n", __func__, t_type, to_ticks, (void *)tmr); return; } if (SCTP_OS_TIMER_PENDING(&tmr->timer)) { /* * we do NOT allow you to have it already running. if it is * we leave the current one up unchanged */ return; } /* At this point we can proceed */ if (t_type == SCTP_TIMER_TYPE_SEND) { stcb->asoc.num_send_timers_up++; } tmr->stopped_from = 0; tmr->type = t_type; tmr->ep = (void *)inp; tmr->tcb = (void *)stcb; tmr->net = (void *)net; tmr->self = (void *)tmr; tmr->vnet = (void *)curvnet; tmr->ticks = sctp_get_tick_count(); (void)SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr); return; } void sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sctp_nets *net, uint32_t from) { struct sctp_timer *tmr; if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) return; tmr = NULL; if (stcb) { SCTP_TCB_LOCK_ASSERT(stcb); } switch (t_type) { case SCTP_TIMER_TYPE_ZERO_COPY: tmr = &inp->sctp_ep.zero_copy_timer; break; case SCTP_TIMER_TYPE_ZCOPY_SENDQ: tmr = &inp->sctp_ep.zero_copy_sendq_timer; break; case SCTP_TIMER_TYPE_ADDR_WQ: tmr = &SCTP_BASE_INFO(addr_wq_timer); break; case SCTP_TIMER_TYPE_SEND: if ((stcb == NULL) || (net == NULL)) { return; } tmr = &net->rxt_timer; break; case SCTP_TIMER_TYPE_INIT: if ((stcb == NULL) || (net == NULL)) { return; } tmr = &net->rxt_timer; break; case SCTP_TIMER_TYPE_RECV: if (stcb == NULL) { return; } tmr = &stcb->asoc.dack_timer; break; case SCTP_TIMER_TYPE_SHUTDOWN: if ((stcb == NULL) || (net == NULL)) { return; } tmr = &net->rxt_timer; break; case SCTP_TIMER_TYPE_HEARTBEAT: if ((stcb == NULL) || (net == NULL)) { return; } tmr = &net->hb_timer; break; case SCTP_TIMER_TYPE_COOKIE: if ((stcb == NULL) || (net == NULL)) { return; } tmr = &net->rxt_timer; break; case SCTP_TIMER_TYPE_NEWCOOKIE: /* nothing needed but the endpoint here */ tmr = &inp->sctp_ep.signature_change; /* * We re-use the newcookie timer for the INP kill timer. We * must assure that we do not kill it by accident. */ break; case SCTP_TIMER_TYPE_ASOCKILL: /* * Stop the asoc kill timer. */ if (stcb == NULL) { return; } tmr = &stcb->asoc.strreset_timer; break; case SCTP_TIMER_TYPE_INPKILL: /* * The inp is setup to die. We re-use the signature_chage * timer since that has stopped and we are in the GONE * state. */ tmr = &inp->sctp_ep.signature_change; break; case SCTP_TIMER_TYPE_PATHMTURAISE: if ((stcb == NULL) || (net == NULL)) { return; } tmr = &net->pmtu_timer; break; case SCTP_TIMER_TYPE_SHUTDOWNACK: if ((stcb == NULL) || (net == NULL)) { return; } tmr = &net->rxt_timer; break; case SCTP_TIMER_TYPE_SHUTDOWNGUARD: if (stcb == NULL) { return; } tmr = &stcb->asoc.shut_guard_timer; break; case SCTP_TIMER_TYPE_STRRESET: if (stcb == NULL) { return; } tmr = &stcb->asoc.strreset_timer; break; case SCTP_TIMER_TYPE_ASCONF: if (stcb == NULL) { return; } tmr = &stcb->asoc.asconf_timer; break; case SCTP_TIMER_TYPE_PRIM_DELETED: if (stcb == NULL) { return; } tmr = &stcb->asoc.delete_prim_timer; break; case SCTP_TIMER_TYPE_AUTOCLOSE: if (stcb == NULL) { return; } tmr = &stcb->asoc.autoclose_timer; break; default: SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n", __func__, t_type); break; } if (tmr == NULL) { return; } if ((tmr->type != t_type) && tmr->type) { /* * Ok we have a timer that is under joint use. Cookie timer * per chance with the SEND timer. We therefore are NOT * running the timer that the caller wants stopped. So just * return. */ return; } if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) { stcb->asoc.num_send_timers_up--; if (stcb->asoc.num_send_timers_up < 0) { stcb->asoc.num_send_timers_up = 0; } } tmr->self = NULL; tmr->stopped_from = from; (void)SCTP_OS_TIMER_STOP(&tmr->timer); return; } uint32_t sctp_calculate_len(struct mbuf *m) { uint32_t tlen = 0; struct mbuf *at; at = m; while (at) { tlen += SCTP_BUF_LEN(at); at = SCTP_BUF_NEXT(at); } return (tlen); } void sctp_mtu_size_reset(struct sctp_inpcb *inp, struct sctp_association *asoc, uint32_t mtu) { /* * Reset the P-MTU size on this association, this involves changing * the asoc MTU, going through ANY chunk+overhead larger than mtu to * allow the DF flag to be cleared. */ struct sctp_tmit_chunk *chk; unsigned int eff_mtu, ovh; asoc->smallest_mtu = mtu; if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { ovh = SCTP_MIN_OVERHEAD; } else { ovh = SCTP_MIN_V4_OVERHEAD; } eff_mtu = mtu - ovh; TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) { if (chk->send_size > eff_mtu) { chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; } } TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) { if (chk->send_size > eff_mtu) { chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; } } } /* * given an association and starting time of the current RTT period return * RTO in number of msecs net should point to the current network */ uint32_t sctp_calculate_rto(struct sctp_tcb *stcb, struct sctp_association *asoc, struct sctp_nets *net, struct timeval *told, int safe, int rtt_from_sack) { /*- * given an association and the starting time of the current RTT * period (in value1/value2) return RTO in number of msecs. */ int32_t rtt; /* RTT in ms */ uint32_t new_rto; int first_measure = 0; struct timeval now, then, *old; /* Copy it out for sparc64 */ if (safe == sctp_align_unsafe_makecopy) { old = &then; memcpy(&then, told, sizeof(struct timeval)); } else if (safe == sctp_align_safe_nocopy) { old = told; } else { /* error */ SCTP_PRINTF("Huh, bad rto calc call\n"); return (0); } /************************/ /* 1. calculate new RTT */ /************************/ /* get the current time */ if (stcb->asoc.use_precise_time) { (void)SCTP_GETPTIME_TIMEVAL(&now); } else { (void)SCTP_GETTIME_TIMEVAL(&now); } timevalsub(&now, old); /* store the current RTT in us */ net->rtt = (uint64_t) 1000000 *(uint64_t) now.tv_sec + (uint64_t) now.tv_usec; /* compute rtt in ms */ rtt = (int32_t) (net->rtt / 1000); if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) { /* * Tell the CC module that a new update has just occurred * from a sack */ (*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now); } /* * Do we need to determine the lan? We do this only on sacks i.e. * RTT being determined from data not non-data (HB/INIT->INITACK). */ if ((rtt_from_sack == SCTP_RTT_FROM_DATA) && (net->lan_type == SCTP_LAN_UNKNOWN)) { if (net->rtt > SCTP_LOCAL_LAN_RTT) { net->lan_type = SCTP_LAN_INTERNET; } else { net->lan_type = SCTP_LAN_LOCAL; } } /***************************/ /* 2. update RTTVAR & SRTT */ /***************************/ /*- * Compute the scaled average lastsa and the * scaled variance lastsv as described in van Jacobson * Paper "Congestion Avoidance and Control", Annex A. * * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt * (net->lastsa >> SCTP_RTT_VAR_SHIFT) is the rttvar */ if (net->RTO_measured) { rtt -= (net->lastsa >> SCTP_RTT_SHIFT); net->lastsa += rtt; if (rtt < 0) { rtt = -rtt; } rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT); net->lastsv += rtt; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) { rto_logging(net, SCTP_LOG_RTTVAR); } } else { /* First RTO measurment */ net->RTO_measured = 1; first_measure = 1; net->lastsa = rtt << SCTP_RTT_SHIFT; net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) { rto_logging(net, SCTP_LOG_INITIAL_RTT); } } if (net->lastsv == 0) { net->lastsv = SCTP_CLOCK_GRANULARITY; } new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv; if ((new_rto > SCTP_SAT_NETWORK_MIN) && (stcb->asoc.sat_network_lockout == 0)) { stcb->asoc.sat_network = 1; } else if ((!first_measure) && stcb->asoc.sat_network) { stcb->asoc.sat_network = 0; stcb->asoc.sat_network_lockout = 1; } /* bound it, per C6/C7 in Section 5.3.1 */ if (new_rto < stcb->asoc.minrto) { new_rto = stcb->asoc.minrto; } if (new_rto > stcb->asoc.maxrto) { new_rto = stcb->asoc.maxrto; } /* we are now returning the RTO */ return (new_rto); } /* * return a pointer to a contiguous piece of data from the given mbuf chain * starting at 'off' for 'len' bytes. If the desired piece spans more than * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain. */ caddr_t sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t * in_ptr) { uint32_t count; uint8_t *ptr; ptr = in_ptr; if ((off < 0) || (len <= 0)) return (NULL); /* find the desired start location */ while ((m != NULL) && (off > 0)) { if (off < SCTP_BUF_LEN(m)) break; off -= SCTP_BUF_LEN(m); m = SCTP_BUF_NEXT(m); } if (m == NULL) return (NULL); /* is the current mbuf large enough (eg. contiguous)? */ if ((SCTP_BUF_LEN(m) - off) >= len) { return (mtod(m, caddr_t)+off); } else { /* else, it spans more than one mbuf, so save a temp copy... */ while ((m != NULL) && (len > 0)) { count = min(SCTP_BUF_LEN(m) - off, len); bcopy(mtod(m, caddr_t)+off, ptr, count); len -= count; ptr += count; off = 0; m = SCTP_BUF_NEXT(m); } if ((m == NULL) && (len > 0)) return (NULL); else return ((caddr_t)in_ptr); } } struct sctp_paramhdr * sctp_get_next_param(struct mbuf *m, int offset, struct sctp_paramhdr *pull, int pull_limit) { /* This just provides a typed signature to Peter's Pull routine */ return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit, (uint8_t *) pull)); } struct mbuf * sctp_add_pad_tombuf(struct mbuf *m, int padlen) { struct mbuf *m_last; caddr_t dp; if (padlen > 3) { return (NULL); } if (padlen <= M_TRAILINGSPACE(m)) { /* * The easy way. We hope the majority of the time we hit * here :) */ m_last = m; } else { /* Hard way we must grow the mbuf chain */ m_last = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA); if (m_last == NULL) { return (NULL); } SCTP_BUF_LEN(m_last) = 0; SCTP_BUF_NEXT(m_last) = NULL; SCTP_BUF_NEXT(m) = m_last; } dp = mtod(m_last, caddr_t)+SCTP_BUF_LEN(m_last); SCTP_BUF_LEN(m_last) += padlen; memset(dp, 0, padlen); return (m_last); } struct mbuf * sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf) { /* find the last mbuf in chain and pad it */ struct mbuf *m_at; if (last_mbuf != NULL) { return (sctp_add_pad_tombuf(last_mbuf, padval)); } else { for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) { if (SCTP_BUF_NEXT(m_at) == NULL) { return (sctp_add_pad_tombuf(m_at, padval)); } } } return (NULL); } static void sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb, uint16_t error, struct sctp_abort_chunk *abort, uint8_t from_peer, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ) { struct mbuf *m_notify; struct sctp_assoc_change *sac; struct sctp_queued_to_read *control; unsigned int notif_len; uint16_t abort_len; unsigned int i; #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) struct socket *so; #endif if (stcb == NULL) { return; } if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) { notif_len = (unsigned int)sizeof(struct sctp_assoc_change); if (abort != NULL) { abort_len = ntohs(abort->ch.chunk_length); } else { abort_len = 0; } if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) { notif_len += SCTP_ASSOC_SUPPORTS_MAX; } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) { notif_len += abort_len; } m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA); if (m_notify == NULL) { /* Retry with smaller value. */ notif_len = (unsigned int)sizeof(struct sctp_assoc_change); m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA); if (m_notify == NULL) { goto set_error; } } SCTP_BUF_NEXT(m_notify) = NULL; sac = mtod(m_notify, struct sctp_assoc_change *); memset(sac, 0, notif_len); sac->sac_type = SCTP_ASSOC_CHANGE; sac->sac_flags = 0; sac->sac_length = sizeof(struct sctp_assoc_change); sac->sac_state = state; sac->sac_error = error; /* XXX verify these stream counts */ sac->sac_outbound_streams = stcb->asoc.streamoutcnt; sac->sac_inbound_streams = stcb->asoc.streamincnt; sac->sac_assoc_id = sctp_get_associd(stcb); if (notif_len > sizeof(struct sctp_assoc_change)) { if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) { i = 0; if (stcb->asoc.prsctp_supported == 1) { sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR; } if (stcb->asoc.auth_supported == 1) { sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH; } if (stcb->asoc.asconf_supported == 1) { sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF; } + if (stcb->asoc.idata_supported == 1) { + sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_INTERLEAVING; + } sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF; if (stcb->asoc.reconfig_supported == 1) { sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG; } sac->sac_length += i; } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) { memcpy(sac->sac_info, abort, abort_len); sac->sac_length += abort_len; } } SCTP_BUF_LEN(m_notify) = sac->sac_length; control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 0, 0, stcb->asoc.context, 0, 0, 0, m_notify); if (control != NULL) { control->length = SCTP_BUF_LEN(m_notify); /* not that we need this */ control->tail_mbuf = m_notify; control->spec_flags = M_NOTIFICATION; sctp_add_to_readq(stcb->sctp_ep, stcb, control, &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked); } else { sctp_m_freem(m_notify); } } /* * For 1-to-1 style sockets, we send up and error when an ABORT * comes in. */ set_error: if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) && ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) { SOCK_LOCK(stcb->sctp_socket); if (from_peer) { if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) { SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED); stcb->sctp_socket->so_error = ECONNREFUSED; } else { SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET); stcb->sctp_socket->so_error = ECONNRESET; } } else { if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) || (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_ECHOED)) { SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ETIMEDOUT); stcb->sctp_socket->so_error = ETIMEDOUT; } else { SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED); stcb->sctp_socket->so_error = ECONNABORTED; } } } /* Wake ANY sleepers */ #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) so = SCTP_INP_SO(stcb->sctp_ep); if (!so_locked) { atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) { SCTP_SOCKET_UNLOCK(so, 1); return; } } #endif if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) && ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) { socantrcvmore_locked(stcb->sctp_socket); } sorwakeup(stcb->sctp_socket); sowwakeup(stcb->sctp_socket); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) if (!so_locked) { SCTP_SOCKET_UNLOCK(so, 1); } #endif } static void sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state, struct sockaddr *sa, uint32_t error, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ) { struct mbuf *m_notify; struct sctp_paddr_change *spc; struct sctp_queued_to_read *control; if ((stcb == NULL) || sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) { /* event not enabled */ return; } m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_NOWAIT, 1, MT_DATA); if (m_notify == NULL) return; SCTP_BUF_LEN(m_notify) = 0; spc = mtod(m_notify, struct sctp_paddr_change *); memset(spc, 0, sizeof(struct sctp_paddr_change)); spc->spc_type = SCTP_PEER_ADDR_CHANGE; spc->spc_flags = 0; spc->spc_length = sizeof(struct sctp_paddr_change); switch (sa->sa_family) { #ifdef INET case AF_INET: #ifdef INET6 if (sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) { in6_sin_2_v4mapsin6((struct sockaddr_in *)sa, (struct sockaddr_in6 *)&spc->spc_aaddr); } else { memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in)); } #else memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in)); #endif break; #endif #ifdef INET6 case AF_INET6: { struct sockaddr_in6 *sin6; memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6)); sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr; if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) { if (sin6->sin6_scope_id == 0) { /* recover scope_id for user */ (void)sa6_recoverscope(sin6); } else { /* clear embedded scope_id for user */ in6_clearscope(&sin6->sin6_addr); } } break; } #endif default: /* TSNH */ break; } spc->spc_state = state; spc->spc_error = error; spc->spc_assoc_id = sctp_get_associd(stcb); SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change); SCTP_BUF_NEXT(m_notify) = NULL; /* append to socket */ control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 0, 0, stcb->asoc.context, 0, 0, 0, m_notify); if (control == NULL) { /* no memory */ sctp_m_freem(m_notify); return; } control->length = SCTP_BUF_LEN(m_notify); control->spec_flags = M_NOTIFICATION; /* not that we need this */ control->tail_mbuf = m_notify; sctp_add_to_readq(stcb->sctp_ep, stcb, control, &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked); } static void sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, uint32_t error, struct sctp_tmit_chunk *chk, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ) { struct mbuf *m_notify; struct sctp_send_failed *ssf; struct sctp_send_failed_event *ssfe; struct sctp_queued_to_read *control; int length; if ((stcb == NULL) || (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) && sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) { /* event not enabled */ return; } if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) { length = sizeof(struct sctp_send_failed_event); } else { length = sizeof(struct sctp_send_failed); } m_notify = sctp_get_mbuf_for_msg(length, 0, M_NOWAIT, 1, MT_DATA); if (m_notify == NULL) /* no space left */ return; SCTP_BUF_LEN(m_notify) = 0; if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) { ssfe = mtod(m_notify, struct sctp_send_failed_event *); memset(ssfe, 0, length); ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT; if (sent) { ssfe->ssfe_flags = SCTP_DATA_SENT; } else { ssfe->ssfe_flags = SCTP_DATA_UNSENT; } length += chk->send_size; length -= sizeof(struct sctp_data_chunk); ssfe->ssfe_length = length; ssfe->ssfe_error = error; /* not exactly what the user sent in, but should be close :) */ ssfe->ssfe_info.snd_sid = chk->rec.data.stream_number; ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags; ssfe->ssfe_info.snd_ppid = chk->rec.data.payloadtype; ssfe->ssfe_info.snd_context = chk->rec.data.context; ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb); ssfe->ssfe_assoc_id = sctp_get_associd(stcb); SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event); } else { ssf = mtod(m_notify, struct sctp_send_failed *); memset(ssf, 0, length); ssf->ssf_type = SCTP_SEND_FAILED; if (sent) { ssf->ssf_flags = SCTP_DATA_SENT; } else { ssf->ssf_flags = SCTP_DATA_UNSENT; } length += chk->send_size; length -= sizeof(struct sctp_data_chunk); ssf->ssf_length = length; ssf->ssf_error = error; /* not exactly what the user sent in, but should be close :) */ bzero(&ssf->ssf_info, sizeof(ssf->ssf_info)); ssf->ssf_info.sinfo_stream = chk->rec.data.stream_number; ssf->ssf_info.sinfo_ssn = chk->rec.data.stream_seq; ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags; ssf->ssf_info.sinfo_ppid = chk->rec.data.payloadtype; ssf->ssf_info.sinfo_context = chk->rec.data.context; ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb); ssf->ssf_assoc_id = sctp_get_associd(stcb); SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed); } if (chk->data) { /* * trim off the sctp chunk header(it should be there) */ if (chk->send_size >= sizeof(struct sctp_data_chunk)) { m_adj(chk->data, sizeof(struct sctp_data_chunk)); sctp_mbuf_crush(chk->data); chk->send_size -= sizeof(struct sctp_data_chunk); } } SCTP_BUF_NEXT(m_notify) = chk->data; /* Steal off the mbuf */ chk->data = NULL; /* * For this case, we check the actual socket buffer, since the assoc * is going away we don't want to overfill the socket buffer for a * non-reader */ if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { sctp_m_freem(m_notify); return; } /* append to socket */ control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 0, 0, stcb->asoc.context, 0, 0, 0, m_notify); if (control == NULL) { /* no memory */ sctp_m_freem(m_notify); return; } control->spec_flags = M_NOTIFICATION; sctp_add_to_readq(stcb->sctp_ep, stcb, control, &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked); } static void sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error, struct sctp_stream_queue_pending *sp, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ) { struct mbuf *m_notify; struct sctp_send_failed *ssf; struct sctp_send_failed_event *ssfe; struct sctp_queued_to_read *control; int length; if ((stcb == NULL) || (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) && sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) { /* event not enabled */ return; } if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) { length = sizeof(struct sctp_send_failed_event); } else { length = sizeof(struct sctp_send_failed); } m_notify = sctp_get_mbuf_for_msg(length, 0, M_NOWAIT, 1, MT_DATA); if (m_notify == NULL) { /* no space left */ return; } SCTP_BUF_LEN(m_notify) = 0; if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) { ssfe = mtod(m_notify, struct sctp_send_failed_event *); memset(ssfe, 0, length); ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT; ssfe->ssfe_flags = SCTP_DATA_UNSENT; length += sp->length; ssfe->ssfe_length = length; ssfe->ssfe_error = error; /* not exactly what the user sent in, but should be close :) */ ssfe->ssfe_info.snd_sid = sp->stream; if (sp->some_taken) { ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG; } else { ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG; } ssfe->ssfe_info.snd_ppid = sp->ppid; ssfe->ssfe_info.snd_context = sp->context; ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb); ssfe->ssfe_assoc_id = sctp_get_associd(stcb); SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event); } else { ssf = mtod(m_notify, struct sctp_send_failed *); memset(ssf, 0, length); ssf->ssf_type = SCTP_SEND_FAILED; ssf->ssf_flags = SCTP_DATA_UNSENT; length += sp->length; ssf->ssf_length = length; ssf->ssf_error = error; /* not exactly what the user sent in, but should be close :) */ ssf->ssf_info.sinfo_stream = sp->stream; ssf->ssf_info.sinfo_ssn = 0; if (sp->some_taken) { ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG; } else { ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG; } ssf->ssf_info.sinfo_ppid = sp->ppid; ssf->ssf_info.sinfo_context = sp->context; ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb); ssf->ssf_assoc_id = sctp_get_associd(stcb); SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed); } SCTP_BUF_NEXT(m_notify) = sp->data; /* Steal off the mbuf */ sp->data = NULL; /* * For this case, we check the actual socket buffer, since the assoc * is going away we don't want to overfill the socket buffer for a * non-reader */ if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { sctp_m_freem(m_notify); return; } /* append to socket */ control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 0, 0, stcb->asoc.context, 0, 0, 0, m_notify); if (control == NULL) { /* no memory */ sctp_m_freem(m_notify); return; } control->spec_flags = M_NOTIFICATION; sctp_add_to_readq(stcb->sctp_ep, stcb, control, &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked); } static void sctp_notify_adaptation_layer(struct sctp_tcb *stcb) { struct mbuf *m_notify; struct sctp_adaptation_event *sai; struct sctp_queued_to_read *control; if ((stcb == NULL) || sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) { /* event not enabled */ return; } m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_NOWAIT, 1, MT_DATA); if (m_notify == NULL) /* no space left */ return; SCTP_BUF_LEN(m_notify) = 0; sai = mtod(m_notify, struct sctp_adaptation_event *); memset(sai, 0, sizeof(struct sctp_adaptation_event)); sai->sai_type = SCTP_ADAPTATION_INDICATION; sai->sai_flags = 0; sai->sai_length = sizeof(struct sctp_adaptation_event); sai->sai_adaptation_ind = stcb->asoc.peers_adaptation; sai->sai_assoc_id = sctp_get_associd(stcb); SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event); SCTP_BUF_NEXT(m_notify) = NULL; /* append to socket */ control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 0, 0, stcb->asoc.context, 0, 0, 0, m_notify); if (control == NULL) { /* no memory */ sctp_m_freem(m_notify); return; } control->length = SCTP_BUF_LEN(m_notify); control->spec_flags = M_NOTIFICATION; /* not that we need this */ control->tail_mbuf = m_notify; sctp_add_to_readq(stcb->sctp_ep, stcb, control, &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); } /* This always must be called with the read-queue LOCKED in the INP */ static void sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error, uint32_t val, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ) { struct mbuf *m_notify; struct sctp_pdapi_event *pdapi; struct sctp_queued_to_read *control; struct sockbuf *sb; if ((stcb == NULL) || sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) { /* event not enabled */ return; } if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) { return; } m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 1, MT_DATA); if (m_notify == NULL) /* no space left */ return; SCTP_BUF_LEN(m_notify) = 0; pdapi = mtod(m_notify, struct sctp_pdapi_event *); memset(pdapi, 0, sizeof(struct sctp_pdapi_event)); pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT; pdapi->pdapi_flags = 0; pdapi->pdapi_length = sizeof(struct sctp_pdapi_event); pdapi->pdapi_indication = error; pdapi->pdapi_stream = (val >> 16); pdapi->pdapi_seq = (val & 0x0000ffff); pdapi->pdapi_assoc_id = sctp_get_associd(stcb); SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event); SCTP_BUF_NEXT(m_notify) = NULL; control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 0, 0, stcb->asoc.context, 0, 0, 0, m_notify); if (control == NULL) { /* no memory */ sctp_m_freem(m_notify); return; } control->spec_flags = M_NOTIFICATION; control->length = SCTP_BUF_LEN(m_notify); /* not that we need this */ control->tail_mbuf = m_notify; control->held_length = 0; control->length = 0; sb = &stcb->sctp_socket->so_rcv; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify)); } sctp_sballoc(stcb, sb, m_notify); if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); } atomic_add_int(&control->length, SCTP_BUF_LEN(m_notify)); control->end_added = 1; if (stcb->asoc.control_pdapi) TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next); else { /* we really should not see this case */ TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next); } if (stcb->sctp_ep && stcb->sctp_socket) { /* This should always be the case */ #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) struct socket *so; so = SCTP_INP_SO(stcb->sctp_ep); if (!so_locked) { atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { SCTP_SOCKET_UNLOCK(so, 1); return; } } #endif sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) if (!so_locked) { SCTP_SOCKET_UNLOCK(so, 1); } #endif } } static void sctp_notify_shutdown_event(struct sctp_tcb *stcb) { struct mbuf *m_notify; struct sctp_shutdown_event *sse; struct sctp_queued_to_read *control; /* * For TCP model AND UDP connected sockets we will send an error up * when an SHUTDOWN completes */ if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { /* mark socket closed for read/write and wakeup! */ #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) struct socket *so; so = SCTP_INP_SO(stcb->sctp_ep); atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) { SCTP_SOCKET_UNLOCK(so, 1); return; } #endif socantsendmore(stcb->sctp_socket); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif } if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) { /* event not enabled */ return; } m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_NOWAIT, 1, MT_DATA); if (m_notify == NULL) /* no space left */ return; sse = mtod(m_notify, struct sctp_shutdown_event *); memset(sse, 0, sizeof(struct sctp_shutdown_event)); sse->sse_type = SCTP_SHUTDOWN_EVENT; sse->sse_flags = 0; sse->sse_length = sizeof(struct sctp_shutdown_event); sse->sse_assoc_id = sctp_get_associd(stcb); SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event); SCTP_BUF_NEXT(m_notify) = NULL; /* append to socket */ control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 0, 0, stcb->asoc.context, 0, 0, 0, m_notify); if (control == NULL) { /* no memory */ sctp_m_freem(m_notify); return; } control->spec_flags = M_NOTIFICATION; control->length = SCTP_BUF_LEN(m_notify); /* not that we need this */ control->tail_mbuf = m_notify; sctp_add_to_readq(stcb->sctp_ep, stcb, control, &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); } static void sctp_notify_sender_dry_event(struct sctp_tcb *stcb, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ) { struct mbuf *m_notify; struct sctp_sender_dry_event *event; struct sctp_queued_to_read *control; if ((stcb == NULL) || sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) { /* event not enabled */ return; } m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_NOWAIT, 1, MT_DATA); if (m_notify == NULL) { /* no space left */ return; } SCTP_BUF_LEN(m_notify) = 0; event = mtod(m_notify, struct sctp_sender_dry_event *); memset(event, 0, sizeof(struct sctp_sender_dry_event)); event->sender_dry_type = SCTP_SENDER_DRY_EVENT; event->sender_dry_flags = 0; event->sender_dry_length = sizeof(struct sctp_sender_dry_event); event->sender_dry_assoc_id = sctp_get_associd(stcb); SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event); SCTP_BUF_NEXT(m_notify) = NULL; /* append to socket */ control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 0, 0, stcb->asoc.context, 0, 0, 0, m_notify); if (control == NULL) { /* no memory */ sctp_m_freem(m_notify); return; } control->length = SCTP_BUF_LEN(m_notify); control->spec_flags = M_NOTIFICATION; /* not that we need this */ control->tail_mbuf = m_notify; sctp_add_to_readq(stcb->sctp_ep, stcb, control, &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked); } void sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag) { struct mbuf *m_notify; struct sctp_queued_to_read *control; struct sctp_stream_change_event *stradd; if ((stcb == NULL) || (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT))) { /* event not enabled */ return; } if ((stcb->asoc.peer_req_out) && flag) { /* Peer made the request, don't tell the local user */ stcb->asoc.peer_req_out = 0; return; } stcb->asoc.peer_req_out = 0; m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_stream_change_event), 0, M_NOWAIT, 1, MT_DATA); if (m_notify == NULL) /* no space left */ return; SCTP_BUF_LEN(m_notify) = 0; stradd = mtod(m_notify, struct sctp_stream_change_event *); memset(stradd, 0, sizeof(struct sctp_stream_change_event)); stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT; stradd->strchange_flags = flag; stradd->strchange_length = sizeof(struct sctp_stream_change_event); stradd->strchange_assoc_id = sctp_get_associd(stcb); stradd->strchange_instrms = numberin; stradd->strchange_outstrms = numberout; SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_stream_change_event); SCTP_BUF_NEXT(m_notify) = NULL; if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { /* no space */ sctp_m_freem(m_notify); return; } /* append to socket */ control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 0, 0, stcb->asoc.context, 0, 0, 0, m_notify); if (control == NULL) { /* no memory */ sctp_m_freem(m_notify); return; } control->spec_flags = M_NOTIFICATION; control->length = SCTP_BUF_LEN(m_notify); /* not that we need this */ control->tail_mbuf = m_notify; sctp_add_to_readq(stcb->sctp_ep, stcb, control, &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); } void sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag) { struct mbuf *m_notify; struct sctp_queued_to_read *control; struct sctp_assoc_reset_event *strasoc; if ((stcb == NULL) || (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT))) { /* event not enabled */ return; } m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_reset_event), 0, M_NOWAIT, 1, MT_DATA); if (m_notify == NULL) /* no space left */ return; SCTP_BUF_LEN(m_notify) = 0; strasoc = mtod(m_notify, struct sctp_assoc_reset_event *); memset(strasoc, 0, sizeof(struct sctp_assoc_reset_event)); strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT; strasoc->assocreset_flags = flag; strasoc->assocreset_length = sizeof(struct sctp_assoc_reset_event); strasoc->assocreset_assoc_id = sctp_get_associd(stcb); strasoc->assocreset_local_tsn = sending_tsn; strasoc->assocreset_remote_tsn = recv_tsn; SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_reset_event); SCTP_BUF_NEXT(m_notify) = NULL; if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { /* no space */ sctp_m_freem(m_notify); return; } /* append to socket */ control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 0, 0, stcb->asoc.context, 0, 0, 0, m_notify); if (control == NULL) { /* no memory */ sctp_m_freem(m_notify); return; } control->spec_flags = M_NOTIFICATION; control->length = SCTP_BUF_LEN(m_notify); /* not that we need this */ control->tail_mbuf = m_notify; sctp_add_to_readq(stcb->sctp_ep, stcb, control, &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); } static void sctp_notify_stream_reset(struct sctp_tcb *stcb, int number_entries, uint16_t * list, int flag) { struct mbuf *m_notify; struct sctp_queued_to_read *control; struct sctp_stream_reset_event *strreset; int len; if ((stcb == NULL) || (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT))) { /* event not enabled */ return; } m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA); if (m_notify == NULL) /* no space left */ return; SCTP_BUF_LEN(m_notify) = 0; len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t)); if (len > M_TRAILINGSPACE(m_notify)) { /* never enough room */ sctp_m_freem(m_notify); return; } strreset = mtod(m_notify, struct sctp_stream_reset_event *); memset(strreset, 0, len); strreset->strreset_type = SCTP_STREAM_RESET_EVENT; strreset->strreset_flags = flag; strreset->strreset_length = len; strreset->strreset_assoc_id = sctp_get_associd(stcb); if (number_entries) { int i; for (i = 0; i < number_entries; i++) { strreset->strreset_stream_list[i] = ntohs(list[i]); } } SCTP_BUF_LEN(m_notify) = len; SCTP_BUF_NEXT(m_notify) = NULL; if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) { /* no space */ sctp_m_freem(m_notify); return; } /* append to socket */ control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 0, 0, stcb->asoc.context, 0, 0, 0, m_notify); if (control == NULL) { /* no memory */ sctp_m_freem(m_notify); return; } control->spec_flags = M_NOTIFICATION; control->length = SCTP_BUF_LEN(m_notify); /* not that we need this */ control->tail_mbuf = m_notify; sctp_add_to_readq(stcb->sctp_ep, stcb, control, &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); } static void sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error, struct sctp_error_chunk *chunk) { struct mbuf *m_notify; struct sctp_remote_error *sre; struct sctp_queued_to_read *control; unsigned int notif_len; uint16_t chunk_len; if ((stcb == NULL) || sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) { return; } if (chunk != NULL) { chunk_len = ntohs(chunk->ch.chunk_length); } else { chunk_len = 0; } notif_len = (unsigned int)(sizeof(struct sctp_remote_error) + chunk_len); m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA); if (m_notify == NULL) { /* Retry with smaller value. */ notif_len = (unsigned int)sizeof(struct sctp_remote_error); m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA); if (m_notify == NULL) { return; } } SCTP_BUF_NEXT(m_notify) = NULL; sre = mtod(m_notify, struct sctp_remote_error *); memset(sre, 0, notif_len); sre->sre_type = SCTP_REMOTE_ERROR; sre->sre_flags = 0; sre->sre_length = sizeof(struct sctp_remote_error); sre->sre_error = error; sre->sre_assoc_id = sctp_get_associd(stcb); if (notif_len > sizeof(struct sctp_remote_error)) { memcpy(sre->sre_data, chunk, chunk_len); sre->sre_length += chunk_len; } SCTP_BUF_LEN(m_notify) = sre->sre_length; control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination, 0, 0, stcb->asoc.context, 0, 0, 0, m_notify); if (control != NULL) { control->length = SCTP_BUF_LEN(m_notify); /* not that we need this */ control->tail_mbuf = m_notify; control->spec_flags = M_NOTIFICATION; sctp_add_to_readq(stcb->sctp_ep, stcb, control, &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED); } else { sctp_m_freem(m_notify); } } void sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb, uint32_t error, void *data, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ) { if ((stcb == NULL) || (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) { /* If the socket is gone we are out of here */ return; } if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) { return; } if ((stcb->asoc.state & SCTP_STATE_COOKIE_WAIT) || (stcb->asoc.state & SCTP_STATE_COOKIE_ECHOED)) { if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) || (notification == SCTP_NOTIFY_INTERFACE_UP) || (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) { /* Don't report these in front states */ return; } } switch (notification) { case SCTP_NOTIFY_ASSOC_UP: if (stcb->asoc.assoc_up_sent == 0) { sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, 0, so_locked); stcb->asoc.assoc_up_sent = 1; } if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) { sctp_notify_adaptation_layer(stcb); } if (stcb->asoc.auth_supported == 0) { sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0, NULL, so_locked); } break; case SCTP_NOTIFY_ASSOC_DOWN: sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, 0, so_locked); break; case SCTP_NOTIFY_INTERFACE_DOWN: { struct sctp_nets *net; net = (struct sctp_nets *)data; sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE, (struct sockaddr *)&net->ro._l_addr, error, so_locked); break; } case SCTP_NOTIFY_INTERFACE_UP: { struct sctp_nets *net; net = (struct sctp_nets *)data; sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE, (struct sockaddr *)&net->ro._l_addr, error, so_locked); break; } case SCTP_NOTIFY_INTERFACE_CONFIRMED: { struct sctp_nets *net; net = (struct sctp_nets *)data; sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED, (struct sockaddr *)&net->ro._l_addr, error, so_locked); break; } case SCTP_NOTIFY_SPECIAL_SP_FAIL: sctp_notify_send_failed2(stcb, error, (struct sctp_stream_queue_pending *)data, so_locked); break; case SCTP_NOTIFY_SENT_DG_FAIL: sctp_notify_send_failed(stcb, 1, error, (struct sctp_tmit_chunk *)data, so_locked); break; case SCTP_NOTIFY_UNSENT_DG_FAIL: sctp_notify_send_failed(stcb, 0, error, (struct sctp_tmit_chunk *)data, so_locked); break; case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION: { uint32_t val; val = *((uint32_t *) data); sctp_notify_partial_delivery_indication(stcb, error, val, so_locked); break; } case SCTP_NOTIFY_ASSOC_LOC_ABORTED: if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) || ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) { sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 0, so_locked); } else { sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 0, so_locked); } break; case SCTP_NOTIFY_ASSOC_REM_ABORTED: if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) || ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) { sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 1, so_locked); } else { sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 1, so_locked); } break; case SCTP_NOTIFY_ASSOC_RESTART: sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, 0, so_locked); if (stcb->asoc.auth_supported == 0) { sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0, NULL, so_locked); } break; case SCTP_NOTIFY_STR_RESET_SEND: sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_OUTGOING_SSN); break; case SCTP_NOTIFY_STR_RESET_RECV: sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_INCOMING); break; case SCTP_NOTIFY_STR_RESET_FAILED_OUT: sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_FAILED)); break; case SCTP_NOTIFY_STR_RESET_DENIED_OUT: sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_DENIED)); break; case SCTP_NOTIFY_STR_RESET_FAILED_IN: sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_FAILED)); break; case SCTP_NOTIFY_STR_RESET_DENIED_IN: sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_DENIED)); break; case SCTP_NOTIFY_ASCONF_ADD_IP: sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data, error, so_locked); break; case SCTP_NOTIFY_ASCONF_DELETE_IP: sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data, error, so_locked); break; case SCTP_NOTIFY_ASCONF_SET_PRIMARY: sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data, error, so_locked); break; case SCTP_NOTIFY_PEER_SHUTDOWN: sctp_notify_shutdown_event(stcb); break; case SCTP_NOTIFY_AUTH_NEW_KEY: sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, error, (uint16_t) (uintptr_t) data, so_locked); break; case SCTP_NOTIFY_AUTH_FREE_KEY: sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error, (uint16_t) (uintptr_t) data, so_locked); break; case SCTP_NOTIFY_NO_PEER_AUTH: sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error, (uint16_t) (uintptr_t) data, so_locked); break; case SCTP_NOTIFY_SENDER_DRY: sctp_notify_sender_dry_event(stcb, so_locked); break; case SCTP_NOTIFY_REMOTE_ERROR: sctp_notify_remote_error(stcb, error, data); break; default: SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n", __func__, notification, notification); break; } /* end switch */ } void sctp_report_all_outbound(struct sctp_tcb *stcb, uint16_t error, int holds_lock, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ) { struct sctp_association *asoc; struct sctp_stream_out *outs; struct sctp_tmit_chunk *chk, *nchk; struct sctp_stream_queue_pending *sp, *nsp; int i; if (stcb == NULL) { return; } asoc = &stcb->asoc; if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) { /* already being freed */ return; } if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || (asoc->state & SCTP_STATE_CLOSED_SOCKET)) { return; } /* now through all the gunk freeing chunks */ if (holds_lock == 0) { SCTP_TCB_SEND_LOCK(stcb); } /* sent queue SHOULD be empty */ TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) { TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next); asoc->sent_queue_cnt--; if (chk->sent != SCTP_DATAGRAM_NR_ACKED) { if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) { asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--; #ifdef INVARIANTS } else { panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number); #endif } } if (chk->data != NULL) { sctp_free_bufspace(stcb, asoc, chk, 1); sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, error, chk, so_locked); if (chk->data) { sctp_m_freem(chk->data); chk->data = NULL; } } sctp_free_a_chunk(stcb, chk, so_locked); /* sa_ignore FREED_MEMORY */ } /* pending send queue SHOULD be empty */ TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) { TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next); asoc->send_queue_cnt--; if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) { asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--; #ifdef INVARIANTS } else { panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number); #endif } if (chk->data != NULL) { sctp_free_bufspace(stcb, asoc, chk, 1); sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, error, chk, so_locked); if (chk->data) { sctp_m_freem(chk->data); chk->data = NULL; } } sctp_free_a_chunk(stcb, chk, so_locked); /* sa_ignore FREED_MEMORY */ } for (i = 0; i < asoc->streamoutcnt; i++) { /* For each stream */ outs = &asoc->strmout[i]; /* clean up any sends there */ asoc->locked_on_sending = NULL; TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) { asoc->stream_queue_cnt--; TAILQ_REMOVE(&outs->outqueue, sp, next); sctp_free_spbufspace(stcb, asoc, sp); if (sp->data) { sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb, error, (void *)sp, so_locked); if (sp->data) { sctp_m_freem(sp->data); sp->data = NULL; sp->tail_mbuf = NULL; sp->length = 0; } } if (sp->net) { sctp_free_remote_addr(sp->net); sp->net = NULL; } /* Free the chunk */ sctp_free_a_strmoq(stcb, sp, so_locked); /* sa_ignore FREED_MEMORY */ } } if (holds_lock == 0) { SCTP_TCB_SEND_UNLOCK(stcb); } } void sctp_abort_notification(struct sctp_tcb *stcb, uint8_t from_peer, uint16_t error, struct sctp_abort_chunk *abort, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ) { if (stcb == NULL) { return; } if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) || ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) { stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED; } if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) { return; } /* Tell them we lost the asoc */ sctp_report_all_outbound(stcb, error, 1, so_locked); if (from_peer) { sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked); } else { sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked); } } void sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct mbuf *m, int iphlen, struct sockaddr *src, struct sockaddr *dst, struct sctphdr *sh, struct mbuf *op_err, uint8_t mflowtype, uint32_t mflowid, uint32_t vrf_id, uint16_t port) { uint32_t vtag; #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) struct socket *so; #endif vtag = 0; if (stcb != NULL) { /* We have a TCB to abort, send notification too */ vtag = stcb->asoc.peer_vtag; sctp_abort_notification(stcb, 0, 0, NULL, SCTP_SO_NOT_LOCKED); /* get the assoc vrf id and table id */ vrf_id = stcb->asoc.vrf_id; stcb->asoc.state |= SCTP_STATE_WAS_ABORTED; } sctp_send_abort(m, iphlen, src, dst, sh, vtag, op_err, mflowtype, mflowid, inp->fibnum, vrf_id, port); if (stcb != NULL) { /* Ok, now lets free it */ #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) so = SCTP_INP_SO(inp); atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); #endif SCTP_STAT_INCR_COUNTER32(sctps_aborted); if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) || (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { SCTP_STAT_DECR_GAUGE32(sctps_currestab); } (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_4); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif } } #ifdef SCTP_ASOCLOG_OF_TSNS void sctp_print_out_track_log(struct sctp_tcb *stcb) { #ifdef NOSIY_PRINTS int i; SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code); SCTP_PRINTF("IN bound TSN log-aaa\n"); if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) { SCTP_PRINTF("None rcvd\n"); goto none_in; } if (stcb->asoc.tsn_in_wrapped) { for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) { SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n", stcb->asoc.in_tsnlog[i].tsn, stcb->asoc.in_tsnlog[i].strm, stcb->asoc.in_tsnlog[i].seq, stcb->asoc.in_tsnlog[i].flgs, stcb->asoc.in_tsnlog[i].sz); } } if (stcb->asoc.tsn_in_at) { for (i = 0; i < stcb->asoc.tsn_in_at; i++) { SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n", stcb->asoc.in_tsnlog[i].tsn, stcb->asoc.in_tsnlog[i].strm, stcb->asoc.in_tsnlog[i].seq, stcb->asoc.in_tsnlog[i].flgs, stcb->asoc.in_tsnlog[i].sz); } } none_in: SCTP_PRINTF("OUT bound TSN log-aaa\n"); if ((stcb->asoc.tsn_out_at == 0) && (stcb->asoc.tsn_out_wrapped == 0)) { SCTP_PRINTF("None sent\n"); } if (stcb->asoc.tsn_out_wrapped) { for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) { SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n", stcb->asoc.out_tsnlog[i].tsn, stcb->asoc.out_tsnlog[i].strm, stcb->asoc.out_tsnlog[i].seq, stcb->asoc.out_tsnlog[i].flgs, stcb->asoc.out_tsnlog[i].sz); } } if (stcb->asoc.tsn_out_at) { for (i = 0; i < stcb->asoc.tsn_out_at; i++) { SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n", stcb->asoc.out_tsnlog[i].tsn, stcb->asoc.out_tsnlog[i].strm, stcb->asoc.out_tsnlog[i].seq, stcb->asoc.out_tsnlog[i].flgs, stcb->asoc.out_tsnlog[i].sz); } } #endif } #endif void sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct mbuf *op_err, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ) { #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) struct socket *so; #endif #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) so = SCTP_INP_SO(inp); #endif if (stcb == NULL) { /* Got to have a TCB */ if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { if (LIST_EMPTY(&inp->sctp_asoc_list)) { sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, SCTP_CALLED_DIRECTLY_NOCMPSET); } } return; } else { stcb->asoc.state |= SCTP_STATE_WAS_ABORTED; } /* notify the ulp */ if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) { sctp_abort_notification(stcb, 0, 0, NULL, so_locked); } /* notify the peer */ sctp_send_abort_tcb(stcb, op_err, so_locked); SCTP_STAT_INCR_COUNTER32(sctps_aborted); if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) || (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { SCTP_STAT_DECR_GAUGE32(sctps_currestab); } /* now free the asoc */ #ifdef SCTP_ASOCLOG_OF_TSNS sctp_print_out_track_log(stcb); #endif #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) if (!so_locked) { atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); } #endif (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_5); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) if (!so_locked) { SCTP_SOCKET_UNLOCK(so, 1); } #endif } void sctp_handle_ootb(struct mbuf *m, int iphlen, int offset, struct sockaddr *src, struct sockaddr *dst, struct sctphdr *sh, struct sctp_inpcb *inp, struct mbuf *cause, uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum, uint32_t vrf_id, uint16_t port) { struct sctp_chunkhdr *ch, chunk_buf; unsigned int chk_length; int contains_init_chunk; SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue); /* Generate a TO address for future reference */ if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) { if (LIST_EMPTY(&inp->sctp_asoc_list)) { sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, SCTP_CALLED_DIRECTLY_NOCMPSET); } } contains_init_chunk = 0; ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch), (uint8_t *) & chunk_buf); while (ch != NULL) { chk_length = ntohs(ch->chunk_length); if (chk_length < sizeof(*ch)) { /* break to abort land */ break; } switch (ch->chunk_type) { case SCTP_INIT: contains_init_chunk = 1; break; case SCTP_PACKET_DROPPED: /* we don't respond to pkt-dropped */ return; case SCTP_ABORT_ASSOCIATION: /* we don't respond with an ABORT to an ABORT */ return; case SCTP_SHUTDOWN_COMPLETE: /* * we ignore it since we are not waiting for it and * peer is gone */ return; case SCTP_SHUTDOWN_ACK: sctp_send_shutdown_complete2(src, dst, sh, mflowtype, mflowid, fibnum, vrf_id, port); return; default: break; } offset += SCTP_SIZE32(chk_length); ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch), (uint8_t *) & chunk_buf); } if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) || ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) && (contains_init_chunk == 0))) { sctp_send_abort(m, iphlen, src, dst, sh, 0, cause, mflowtype, mflowid, fibnum, vrf_id, port); } } /* * check the inbound datagram to make sure there is not an abort inside it, * if there is return 1, else return 0. */ int sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t * vtagfill) { struct sctp_chunkhdr *ch; struct sctp_init_chunk *init_chk, chunk_buf; int offset; unsigned int chk_length; offset = iphlen + sizeof(struct sctphdr); ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch), (uint8_t *) & chunk_buf); while (ch != NULL) { chk_length = ntohs(ch->chunk_length); if (chk_length < sizeof(*ch)) { /* packet is probably corrupt */ break; } /* we seem to be ok, is it an abort? */ if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) { /* yep, tell them */ return (1); } if (ch->chunk_type == SCTP_INITIATION) { /* need to update the Vtag */ init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m, offset, sizeof(*init_chk), (uint8_t *) & chunk_buf); if (init_chk != NULL) { *vtagfill = ntohl(init_chk->init.initiate_tag); } } /* Nope, move to the next chunk */ offset += SCTP_SIZE32(chk_length); ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch), (uint8_t *) & chunk_buf); } return (0); } /* * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id * set (i.e. it's 0) so, create this function to compare link local scopes */ #ifdef INET6 uint32_t sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2) { struct sockaddr_in6 a, b; /* save copies */ a = *addr1; b = *addr2; if (a.sin6_scope_id == 0) if (sa6_recoverscope(&a)) { /* can't get scope, so can't match */ return (0); } if (b.sin6_scope_id == 0) if (sa6_recoverscope(&b)) { /* can't get scope, so can't match */ return (0); } if (a.sin6_scope_id != b.sin6_scope_id) return (0); return (1); } /* * returns a sockaddr_in6 with embedded scope recovered and removed */ struct sockaddr_in6 * sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store) { /* check and strip embedded scope junk */ if (addr->sin6_family == AF_INET6) { if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) { if (addr->sin6_scope_id == 0) { *store = *addr; if (!sa6_recoverscope(store)) { /* use the recovered scope */ addr = store; } } else { /* else, return the original "to" addr */ in6_clearscope(&addr->sin6_addr); } } } return (addr); } #endif /* * are the two addresses the same? currently a "scopeless" check returns: 1 * if same, 0 if not */ int sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2) { /* must be valid */ if (sa1 == NULL || sa2 == NULL) return (0); /* must be the same family */ if (sa1->sa_family != sa2->sa_family) return (0); switch (sa1->sa_family) { #ifdef INET6 case AF_INET6: { /* IPv6 addresses */ struct sockaddr_in6 *sin6_1, *sin6_2; sin6_1 = (struct sockaddr_in6 *)sa1; sin6_2 = (struct sockaddr_in6 *)sa2; return (SCTP6_ARE_ADDR_EQUAL(sin6_1, sin6_2)); } #endif #ifdef INET case AF_INET: { /* IPv4 addresses */ struct sockaddr_in *sin_1, *sin_2; sin_1 = (struct sockaddr_in *)sa1; sin_2 = (struct sockaddr_in *)sa2; return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr); } #endif default: /* we don't do these... */ return (0); } } void sctp_print_address(struct sockaddr *sa) { #ifdef INET6 char ip6buf[INET6_ADDRSTRLEN]; #endif switch (sa->sa_family) { #ifdef INET6 case AF_INET6: { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)sa; SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n", ip6_sprintf(ip6buf, &sin6->sin6_addr), ntohs(sin6->sin6_port), sin6->sin6_scope_id); break; } #endif #ifdef INET case AF_INET: { struct sockaddr_in *sin; unsigned char *p; sin = (struct sockaddr_in *)sa; p = (unsigned char *)&sin->sin_addr; SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n", p[0], p[1], p[2], p[3], ntohs(sin->sin_port)); break; } #endif default: SCTP_PRINTF("?\n"); break; } } void sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp, struct sctp_tcb *stcb, int waitflags) { /* * go through our old INP and pull off any control structures that * belong to stcb and move then to the new inp. */ struct socket *old_so, *new_so; struct sctp_queued_to_read *control, *nctl; struct sctp_readhead tmp_queue; struct mbuf *m; int error = 0; old_so = old_inp->sctp_socket; new_so = new_inp->sctp_socket; TAILQ_INIT(&tmp_queue); error = sblock(&old_so->so_rcv, waitflags); if (error) { /* * Gak, can't get sblock, we have a problem. data will be * left stranded.. and we don't dare look at it since the * other thread may be reading something. Oh well, its a * screwed up app that does a peeloff OR a accept while * reading from the main socket... actually its only the * peeloff() case, since I think read will fail on a * listening socket.. */ return; } /* lock the socket buffers */ SCTP_INP_READ_LOCK(old_inp); TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) { /* Pull off all for out target stcb */ if (control->stcb == stcb) { /* remove it we want it */ TAILQ_REMOVE(&old_inp->read_queue, control, next); TAILQ_INSERT_TAIL(&tmp_queue, control, next); m = control->data; while (m) { if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m)); } sctp_sbfree(control, stcb, &old_so->so_rcv, m); if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); } m = SCTP_BUF_NEXT(m); } } } SCTP_INP_READ_UNLOCK(old_inp); /* Remove the sb-lock on the old socket */ sbunlock(&old_so->so_rcv); /* Now we move them over to the new socket buffer */ SCTP_INP_READ_LOCK(new_inp); TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) { TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next); m = control->data; while (m) { if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m)); } sctp_sballoc(stcb, &new_so->so_rcv, m); if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); } m = SCTP_BUF_NEXT(m); } } SCTP_INP_READ_UNLOCK(new_inp); } void +sctp_wakeup_the_read_socket(struct sctp_inpcb *inp) +{ + if (inp && inp->sctp_socket) { + if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) { + SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket); + } else { +#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) + struct socket *so; + + so = SCTP_INP_SO(inp); + if (!so_locked) { + if (stcb) { + atomic_add_int(&stcb->asoc.refcnt, 1); + SCTP_TCB_UNLOCK(stcb); + } + SCTP_SOCKET_LOCK(so, 1); + if (stcb) { + SCTP_TCB_LOCK(stcb); + atomic_subtract_int(&stcb->asoc.refcnt, 1); + } + if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { + SCTP_SOCKET_UNLOCK(so, 1); + return; + } + } +#endif + sctp_sorwakeup(inp, inp->sctp_socket); +#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) + if (!so_locked) { + SCTP_SOCKET_UNLOCK(so, 1); + } +#endif + } + } +} + +void sctp_add_to_readq(struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sctp_queued_to_read *control, struct sockbuf *sb, int end, int inp_read_lock_held, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ) { /* * Here we must place the control on the end of the socket read * queue AND increment sb_cc so that select will work properly on * read. */ struct mbuf *m, *prev = NULL; if (inp == NULL) { /* Gak, TSNH!! */ #ifdef INVARIANTS panic("Gak, inp NULL on add_to_readq"); #endif return; } if (inp_read_lock_held == 0) SCTP_INP_READ_LOCK(inp); if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) { sctp_free_remote_addr(control->whoFrom); if (control->data) { sctp_m_freem(control->data); control->data = NULL; } - SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), control); + sctp_free_a_readq(stcb, control); if (inp_read_lock_held == 0) SCTP_INP_READ_UNLOCK(inp); return; } if (!(control->spec_flags & M_NOTIFICATION)) { atomic_add_int(&inp->total_recvs, 1); if (!control->do_not_ref_stcb) { atomic_add_int(&stcb->total_recvs, 1); } } m = control->data; control->held_length = 0; control->length = 0; while (m) { if (SCTP_BUF_LEN(m) == 0) { /* Skip mbufs with NO length */ if (prev == NULL) { /* First one */ control->data = sctp_m_free(m); m = control->data; } else { SCTP_BUF_NEXT(prev) = sctp_m_free(m); m = SCTP_BUF_NEXT(prev); } if (m == NULL) { control->tail_mbuf = prev; } continue; } prev = m; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m)); } sctp_sballoc(stcb, sb, m); if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); } atomic_add_int(&control->length, SCTP_BUF_LEN(m)); m = SCTP_BUF_NEXT(m); } if (prev != NULL) { control->tail_mbuf = prev; } else { /* Everything got collapsed out?? */ sctp_free_remote_addr(control->whoFrom); - SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), control); + sctp_free_a_readq(stcb, control); if (inp_read_lock_held == 0) SCTP_INP_READ_UNLOCK(inp); return; } if (end) { control->end_added = 1; } TAILQ_INSERT_TAIL(&inp->read_queue, control, next); + control->on_read_q = 1; if (inp_read_lock_held == 0) SCTP_INP_READ_UNLOCK(inp); if (inp && inp->sctp_socket) { - if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) { - SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket); - } else { -#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) - struct socket *so; - - so = SCTP_INP_SO(inp); - if (!so_locked) { - if (stcb) { - atomic_add_int(&stcb->asoc.refcnt, 1); - SCTP_TCB_UNLOCK(stcb); - } - SCTP_SOCKET_LOCK(so, 1); - if (stcb) { - SCTP_TCB_LOCK(stcb); - atomic_subtract_int(&stcb->asoc.refcnt, 1); - } - if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { - SCTP_SOCKET_UNLOCK(so, 1); - return; - } - } -#endif - sctp_sorwakeup(inp, inp->sctp_socket); -#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) - if (!so_locked) { - SCTP_SOCKET_UNLOCK(so, 1); - } -#endif - } + sctp_wakeup_the_read_socket(inp); } } int sctp_append_to_readq(struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sctp_queued_to_read *control, struct mbuf *m, int end, int ctls_cumack, struct sockbuf *sb) { /* * A partial delivery API event is underway. OR we are appending on * the reassembly queue. * * If PDAPI this means we need to add m to the end of the data. * Increase the length in the control AND increment the sb_cc. * Otherwise sb is NULL and all we need to do is put it at the end * of the mbuf chain. */ int len = 0; struct mbuf *mm, *tail = NULL, *prev = NULL; if (inp) { SCTP_INP_READ_LOCK(inp); } if (control == NULL) { get_out: if (inp) { SCTP_INP_READ_UNLOCK(inp); } return (-1); } if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ)) { SCTP_INP_READ_UNLOCK(inp); return (0); } if (control->end_added) { /* huh this one is complete? */ goto get_out; } mm = m; if (mm == NULL) { goto get_out; } while (mm) { if (SCTP_BUF_LEN(mm) == 0) { /* Skip mbufs with NO lenght */ if (prev == NULL) { /* First one */ m = sctp_m_free(mm); mm = m; } else { SCTP_BUF_NEXT(prev) = sctp_m_free(mm); mm = SCTP_BUF_NEXT(prev); } continue; } prev = mm; len += SCTP_BUF_LEN(mm); if (sb) { if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(mm)); } sctp_sballoc(stcb, sb, mm); if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); } } mm = SCTP_BUF_NEXT(mm); } if (prev) { tail = prev; } else { /* Really there should always be a prev */ if (m == NULL) { /* Huh nothing left? */ #ifdef INVARIANTS panic("Nothing left to add?"); #else goto get_out; #endif } tail = m; } if (control->tail_mbuf) { /* append */ SCTP_BUF_NEXT(control->tail_mbuf) = m; control->tail_mbuf = tail; } else { /* nothing there */ #ifdef INVARIANTS if (control->data != NULL) { panic("This should NOT happen"); } #endif control->data = m; control->tail_mbuf = tail; } atomic_add_int(&control->length, len); if (end) { /* message is complete */ if (stcb && (control == stcb->asoc.control_pdapi)) { stcb->asoc.control_pdapi = NULL; } control->held_length = 0; control->end_added = 1; } if (stcb == NULL) { control->do_not_ref_stcb = 1; } /* * When we are appending in partial delivery, the cum-ack is used * for the actual pd-api highest tsn on this mbuf. The true cum-ack * is populated in the outbound sinfo structure from the true cumack * if the association exists... */ control->sinfo_tsn = control->sinfo_cumtsn = ctls_cumack; if (inp) { SCTP_INP_READ_UNLOCK(inp); } if (inp && inp->sctp_socket) { if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) { SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket); } else { #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) struct socket *so; so = SCTP_INP_SO(inp); if (stcb) { atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); } SCTP_SOCKET_LOCK(so, 1); if (stcb) { SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); } if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { SCTP_SOCKET_UNLOCK(so, 1); return (0); } #endif sctp_sorwakeup(inp, inp->sctp_socket); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) SCTP_SOCKET_UNLOCK(so, 1); #endif } } return (0); } /*************HOLD THIS COMMENT FOR PATCH FILE OF *************ALTERNATE ROUTING CODE */ /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF *************ALTERNATE ROUTING CODE */ struct mbuf * sctp_generate_cause(uint16_t code, char *info) { struct mbuf *m; struct sctp_gen_error_cause *cause; size_t info_len; uint16_t len; if ((code == 0) || (info == NULL)) { return (NULL); } info_len = strlen(info); if (info_len > (SCTP_MAX_CAUSE_LENGTH - sizeof(struct sctp_paramhdr))) { return (NULL); } len = (uint16_t) (sizeof(struct sctp_paramhdr) + info_len); m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA); if (m != NULL) { SCTP_BUF_LEN(m) = len; cause = mtod(m, struct sctp_gen_error_cause *); cause->code = htons(code); cause->length = htons(len); memcpy(cause->info, info, info_len); } return (m); } struct mbuf * sctp_generate_no_user_data_cause(uint32_t tsn) { struct mbuf *m; struct sctp_error_no_user_data *no_user_data_cause; uint16_t len; len = (uint16_t) sizeof(struct sctp_error_no_user_data); m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA); if (m != NULL) { SCTP_BUF_LEN(m) = len; no_user_data_cause = mtod(m, struct sctp_error_no_user_data *); no_user_data_cause->cause.code = htons(SCTP_CAUSE_NO_USER_DATA); no_user_data_cause->cause.length = htons(len); no_user_data_cause->tsn = tsn; /* tsn is passed in as NBO */ } return (m); } #ifdef SCTP_MBCNT_LOGGING void sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc, struct sctp_tmit_chunk *tp1, int chk_cnt) { if (tp1->data == NULL) { return; } asoc->chunks_on_out_queue -= chk_cnt; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) { sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE, asoc->total_output_queue_size, tp1->book_size, 0, tp1->mbcnt); } if (asoc->total_output_queue_size >= tp1->book_size) { atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size); } else { asoc->total_output_queue_size = 0; } if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) || ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) { if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) { stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size; } else { stcb->sctp_socket->so_snd.sb_cc = 0; } } } #endif int sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1, uint8_t sent, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ) { struct sctp_stream_out *strq; struct sctp_tmit_chunk *chk = NULL, *tp2; struct sctp_stream_queue_pending *sp; uint16_t stream = 0, seq = 0; uint8_t foundeom = 0; int ret_sz = 0; int notdone; int do_wakeup_routine = 0; stream = tp1->rec.data.stream_number; seq = tp1->rec.data.stream_seq; if (sent || !(tp1->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG)) { stcb->asoc.abandoned_sent[0]++; stcb->asoc.abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++; stcb->asoc.strmout[stream].abandoned_sent[0]++; #if defined(SCTP_DETAILED_STR_STATS) stcb->asoc.strmout[stream].abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++; #endif } else { stcb->asoc.abandoned_unsent[0]++; stcb->asoc.abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++; stcb->asoc.strmout[stream].abandoned_unsent[0]++; #if defined(SCTP_DETAILED_STR_STATS) stcb->asoc.strmout[stream].abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++; #endif } do { ret_sz += tp1->book_size; if (tp1->data != NULL) { if (tp1->sent < SCTP_DATAGRAM_RESEND) { sctp_flight_size_decrease(tp1); sctp_total_flight_decrease(stcb, tp1); } sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1); stcb->asoc.peers_rwnd += tp1->send_size; stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh); if (sent) { sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked); } else { sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked); } if (tp1->data) { sctp_m_freem(tp1->data); tp1->data = NULL; } do_wakeup_routine = 1; if (PR_SCTP_BUF_ENABLED(tp1->flags)) { stcb->asoc.sent_queue_cnt_removeable--; } } tp1->sent = SCTP_FORWARD_TSN_SKIP; if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) == SCTP_DATA_NOT_FRAG) { /* not frag'ed we ae done */ notdone = 0; foundeom = 1; } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) { /* end of frag, we are done */ notdone = 0; foundeom = 1; } else { /* * Its a begin or middle piece, we must mark all of * it */ notdone = 1; tp1 = TAILQ_NEXT(tp1, sctp_next); } } while (tp1 && notdone); if (foundeom == 0) { /* * The multi-part message was scattered across the send and * sent queue. */ TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) { if ((tp1->rec.data.stream_number != stream) || (tp1->rec.data.stream_seq != seq)) { break; } /* * save to chk in case we have some on stream out * queue. If so and we have an un-transmitted one we * don't have to fudge the TSN. */ chk = tp1; ret_sz += tp1->book_size; sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1); if (sent) { sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked); } else { sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked); } if (tp1->data) { sctp_m_freem(tp1->data); tp1->data = NULL; } /* No flight involved here book the size to 0 */ tp1->book_size = 0; if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) { foundeom = 1; } do_wakeup_routine = 1; tp1->sent = SCTP_FORWARD_TSN_SKIP; TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next); /* * on to the sent queue so we can wait for it to be * passed by. */ TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1, sctp_next); stcb->asoc.send_queue_cnt--; stcb->asoc.sent_queue_cnt++; } } if (foundeom == 0) { /* * Still no eom found. That means there is stuff left on the * stream out queue.. yuck. */ SCTP_TCB_SEND_LOCK(stcb); strq = &stcb->asoc.strmout[stream]; sp = TAILQ_FIRST(&strq->outqueue); if (sp != NULL) { sp->discard_rest = 1; /* * We may need to put a chunk on the queue that * holds the TSN that would have been sent with the * LAST bit. */ if (chk == NULL) { /* Yep, we have to */ sctp_alloc_a_chunk(stcb, chk); if (chk == NULL) { /* * we are hosed. All we can do is * nothing.. which will cause an * abort if the peer is paying * attention. */ goto oh_well; } memset(chk, 0, sizeof(*chk)); chk->rec.data.rcv_flags = SCTP_DATA_LAST_FRAG; chk->sent = SCTP_FORWARD_TSN_SKIP; chk->asoc = &stcb->asoc; chk->rec.data.stream_seq = strq->next_sequence_send; chk->rec.data.stream_number = sp->stream; chk->rec.data.payloadtype = sp->ppid; chk->rec.data.context = sp->context; chk->flags = sp->act_flags; chk->whoTo = NULL; chk->rec.data.TSN_seq = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1); strq->chunks_on_queues++; TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next); stcb->asoc.sent_queue_cnt++; stcb->asoc.pr_sctp_cnt++; } else { chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG; } strq->next_sequence_send++; oh_well: if (sp->data) { /* * Pull any data to free up the SB and allow * sender to "add more" while we will throw * away :-) */ sctp_free_spbufspace(stcb, &stcb->asoc, sp); ret_sz += sp->length; do_wakeup_routine = 1; sp->some_taken = 1; sctp_m_freem(sp->data); sp->data = NULL; sp->tail_mbuf = NULL; sp->length = 0; } } SCTP_TCB_SEND_UNLOCK(stcb); } if (do_wakeup_routine) { #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) struct socket *so; so = SCTP_INP_SO(stcb->sctp_ep); if (!so_locked) { atomic_add_int(&stcb->asoc.refcnt, 1); SCTP_TCB_UNLOCK(stcb); SCTP_SOCKET_LOCK(so, 1); SCTP_TCB_LOCK(stcb); atomic_subtract_int(&stcb->asoc.refcnt, 1); if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) { /* assoc was freed while we were unlocked */ SCTP_SOCKET_UNLOCK(so, 1); return (ret_sz); } } #endif sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket); #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) if (!so_locked) { SCTP_SOCKET_UNLOCK(so, 1); } #endif } return (ret_sz); } /* * checks to see if the given address, sa, is one that is currently known by * the kernel note: can't distinguish the same address on multiple interfaces * and doesn't handle multiple addresses with different zone/scope id's note: * ifa_ifwithaddr() compares the entire sockaddr struct */ struct sctp_ifa * sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr, int holds_lock) { struct sctp_laddr *laddr; if (holds_lock == 0) { SCTP_INP_RLOCK(inp); } LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { if (laddr->ifa == NULL) continue; if (addr->sa_family != laddr->ifa->address.sa.sa_family) continue; #ifdef INET if (addr->sa_family == AF_INET) { if (((struct sockaddr_in *)addr)->sin_addr.s_addr == laddr->ifa->address.sin.sin_addr.s_addr) { /* found him. */ if (holds_lock == 0) { SCTP_INP_RUNLOCK(inp); } return (laddr->ifa); break; } } #endif #ifdef INET6 if (addr->sa_family == AF_INET6) { if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr, &laddr->ifa->address.sin6)) { /* found him. */ if (holds_lock == 0) { SCTP_INP_RUNLOCK(inp); } return (laddr->ifa); break; } } #endif } if (holds_lock == 0) { SCTP_INP_RUNLOCK(inp); } return (NULL); } uint32_t sctp_get_ifa_hash_val(struct sockaddr *addr) { switch (addr->sa_family) { #ifdef INET case AF_INET: { struct sockaddr_in *sin; sin = (struct sockaddr_in *)addr; return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16)); } #endif #ifdef INET6 case AF_INET6: { struct sockaddr_in6 *sin6; uint32_t hash_of_addr; sin6 = (struct sockaddr_in6 *)addr; hash_of_addr = (sin6->sin6_addr.s6_addr32[0] + sin6->sin6_addr.s6_addr32[1] + sin6->sin6_addr.s6_addr32[2] + sin6->sin6_addr.s6_addr32[3]); hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16)); return (hash_of_addr); } #endif default: break; } return (0); } struct sctp_ifa * sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock) { struct sctp_ifa *sctp_ifap; struct sctp_vrf *vrf; struct sctp_ifalist *hash_head; uint32_t hash_of_addr; if (holds_lock == 0) SCTP_IPI_ADDR_RLOCK(); vrf = sctp_find_vrf(vrf_id); if (vrf == NULL) { if (holds_lock == 0) SCTP_IPI_ADDR_RUNLOCK(); return (NULL); } hash_of_addr = sctp_get_ifa_hash_val(addr); hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)]; if (hash_head == NULL) { SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ", hash_of_addr, (uint32_t) vrf->vrf_addr_hashmark, (uint32_t) (hash_of_addr & vrf->vrf_addr_hashmark)); sctp_print_address(addr); SCTP_PRINTF("No such bucket for address\n"); if (holds_lock == 0) SCTP_IPI_ADDR_RUNLOCK(); return (NULL); } LIST_FOREACH(sctp_ifap, hash_head, next_bucket) { if (addr->sa_family != sctp_ifap->address.sa.sa_family) continue; #ifdef INET if (addr->sa_family == AF_INET) { if (((struct sockaddr_in *)addr)->sin_addr.s_addr == sctp_ifap->address.sin.sin_addr.s_addr) { /* found him. */ if (holds_lock == 0) SCTP_IPI_ADDR_RUNLOCK(); return (sctp_ifap); break; } } #endif #ifdef INET6 if (addr->sa_family == AF_INET6) { if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr, &sctp_ifap->address.sin6)) { /* found him. */ if (holds_lock == 0) SCTP_IPI_ADDR_RUNLOCK(); return (sctp_ifap); break; } } #endif } if (holds_lock == 0) SCTP_IPI_ADDR_RUNLOCK(); return (NULL); } static void sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t * freed_so_far, int hold_rlock, uint32_t rwnd_req) { /* User pulled some data, do we need a rwnd update? */ int r_unlocked = 0; uint32_t dif, rwnd; struct socket *so = NULL; if (stcb == NULL) return; atomic_add_int(&stcb->asoc.refcnt, 1); if (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED | SCTP_STATE_SHUTDOWN_RECEIVED | SCTP_STATE_SHUTDOWN_ACK_SENT)) { /* Pre-check If we are freeing no update */ goto no_lock; } SCTP_INP_INCR_REF(stcb->sctp_ep); if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) { goto out; } so = stcb->sctp_socket; if (so == NULL) { goto out; } atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far); /* Have you have freed enough to look */ *freed_so_far = 0; /* Yep, its worth a look and the lock overhead */ /* Figure out what the rwnd would be */ rwnd = sctp_calc_rwnd(stcb, &stcb->asoc); if (rwnd >= stcb->asoc.my_last_reported_rwnd) { dif = rwnd - stcb->asoc.my_last_reported_rwnd; } else { dif = 0; } if (dif >= rwnd_req) { if (hold_rlock) { SCTP_INP_READ_UNLOCK(stcb->sctp_ep); r_unlocked = 1; } if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { /* * One last check before we allow the guy possibly * to get in. There is a race, where the guy has not * reached the gate. In that case */ goto out; } SCTP_TCB_LOCK(stcb); if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { /* No reports here */ SCTP_TCB_UNLOCK(stcb); goto out; } SCTP_STAT_INCR(sctps_wu_sacks_sent); sctp_send_sack(stcb, SCTP_SO_LOCKED); sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED); /* make sure no timer is running */ sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_6); SCTP_TCB_UNLOCK(stcb); } else { /* Update how much we have pending */ stcb->freed_by_sorcv_sincelast = dif; } out: if (so && r_unlocked && hold_rlock) { SCTP_INP_READ_LOCK(stcb->sctp_ep); } SCTP_INP_DECR_REF(stcb->sctp_ep); no_lock: atomic_add_int(&stcb->asoc.refcnt, -1); return; } int sctp_sorecvmsg(struct socket *so, struct uio *uio, struct mbuf **mp, struct sockaddr *from, int fromlen, int *msg_flags, struct sctp_sndrcvinfo *sinfo, int filling_sinfo) { /* * MSG flags we will look at MSG_DONTWAIT - non-blocking IO. * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ?? * On the way out we may send out any combination of: * MSG_NOTIFICATION MSG_EOR * */ struct sctp_inpcb *inp = NULL; int my_len = 0; int cp_len = 0, error = 0; struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL; struct mbuf *m = NULL; struct sctp_tcb *stcb = NULL; int wakeup_read_socket = 0; int freecnt_applied = 0; int out_flags = 0, in_flags = 0; int block_allowed = 1; uint32_t freed_so_far = 0; uint32_t copied_so_far = 0; int in_eeor_mode = 0; int no_rcv_needed = 0; uint32_t rwnd_req = 0; int hold_sblock = 0; int hold_rlock = 0; ssize_t slen = 0; uint32_t held_length = 0; int sockbuf_lock = 0; if (uio == NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); return (EINVAL); } if (msg_flags) { in_flags = *msg_flags; if (in_flags & MSG_PEEK) SCTP_STAT_INCR(sctps_read_peeks); } else { in_flags = 0; } slen = uio->uio_resid; /* Pull in and set up our int flags */ if (in_flags & MSG_OOB) { /* Out of band's NOT supported */ return (EOPNOTSUPP); } if ((in_flags & MSG_PEEK) && (mp != NULL)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); return (EINVAL); } if ((in_flags & (MSG_DONTWAIT | MSG_NBIO )) || SCTP_SO_IS_NBIO(so)) { block_allowed = 0; } /* setup the endpoint */ inp = (struct sctp_inpcb *)so->so_pcb; if (inp == NULL) { SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT); return (EFAULT); } rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT); /* Must be at least a MTU's worth */ if (rwnd_req < SCTP_MIN_RWND) rwnd_req = SCTP_MIN_RWND; in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR); if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) { sctp_misc_ints(SCTP_SORECV_ENTER, rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, (uint32_t) uio->uio_resid); } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) { sctp_misc_ints(SCTP_SORECV_ENTERPL, rwnd_req, block_allowed, so->so_rcv.sb_cc, (uint32_t) uio->uio_resid); } error = sblock(&so->so_rcv, (block_allowed ? SBL_WAIT : 0)); if (error) { goto release_unlocked; } sockbuf_lock = 1; restart: restart_nosblocks: if (hold_sblock == 0) { SOCKBUF_LOCK(&so->so_rcv); hold_sblock = 1; } if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) || (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) { goto out; } if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && (so->so_rcv.sb_cc == 0)) { if (so->so_error) { error = so->so_error; if ((in_flags & MSG_PEEK) == 0) so->so_error = 0; goto out; } else { if (so->so_rcv.sb_cc == 0) { /* indicate EOF */ error = 0; goto out; } } } if ((so->so_rcv.sb_cc <= held_length) && block_allowed) { /* we need to wait for data */ if ((so->so_rcv.sb_cc == 0) && ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) { /* * For active open side clear flags for * re-use passive open is blocked by * connect. */ if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) { /* * You were aborted, passive side * always hits here */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET); error = ECONNRESET; } so->so_state &= ~(SS_ISCONNECTING | SS_ISDISCONNECTING | SS_ISCONFIRMING | SS_ISCONNECTED); if (error == 0) { if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN); error = ENOTCONN; } } goto out; } } error = sbwait(&so->so_rcv); if (error) { goto out; } held_length = 0; goto restart_nosblocks; } else if (so->so_rcv.sb_cc == 0) { if (so->so_error) { error = so->so_error; if ((in_flags & MSG_PEEK) == 0) so->so_error = 0; } else { if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) { /* * For active open side clear flags * for re-use passive open is * blocked by connect. */ if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) { /* * You were aborted, passive * side always hits here */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET); error = ECONNRESET; } so->so_state &= ~(SS_ISCONNECTING | SS_ISDISCONNECTING | SS_ISCONFIRMING | SS_ISCONNECTED); if (error == 0) { if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN); error = ENOTCONN; } } goto out; } } SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK); error = EWOULDBLOCK; } goto out; } if (hold_sblock == 1) { SOCKBUF_UNLOCK(&so->so_rcv); hold_sblock = 0; } /* we possibly have data we can read */ /* sa_ignore FREED_MEMORY */ control = TAILQ_FIRST(&inp->read_queue); if (control == NULL) { /* * This could be happening since the appender did the * increment but as not yet did the tailq insert onto the * read_queue */ if (hold_rlock == 0) { SCTP_INP_READ_LOCK(inp); } control = TAILQ_FIRST(&inp->read_queue); if ((control == NULL) && (so->so_rcv.sb_cc != 0)) { #ifdef INVARIANTS panic("Huh, its non zero and nothing on control?"); #endif so->so_rcv.sb_cc = 0; } SCTP_INP_READ_UNLOCK(inp); hold_rlock = 0; goto restart; } if ((control->length == 0) && (control->do_not_ref_stcb)) { /* * Clean up code for freeing assoc that left behind a * pdapi.. maybe a peer in EEOR that just closed after * sending and never indicated a EOR. */ if (hold_rlock == 0) { hold_rlock = 1; SCTP_INP_READ_LOCK(inp); } control->held_length = 0; if (control->data) { /* Hmm there is data here .. fix */ struct mbuf *m_tmp; int cnt = 0; m_tmp = control->data; while (m_tmp) { cnt += SCTP_BUF_LEN(m_tmp); if (SCTP_BUF_NEXT(m_tmp) == NULL) { control->tail_mbuf = m_tmp; control->end_added = 1; } m_tmp = SCTP_BUF_NEXT(m_tmp); } control->length = cnt; } else { /* remove it */ TAILQ_REMOVE(&inp->read_queue, control, next); /* Add back any hiddend data */ sctp_free_remote_addr(control->whoFrom); sctp_free_a_readq(stcb, control); } if (hold_rlock) { hold_rlock = 0; SCTP_INP_READ_UNLOCK(inp); } goto restart; } if ((control->length == 0) && (control->end_added == 1)) { /* * Do we also need to check for (control->pdapi_aborted == * 1)? */ if (hold_rlock == 0) { hold_rlock = 1; SCTP_INP_READ_LOCK(inp); } TAILQ_REMOVE(&inp->read_queue, control, next); if (control->data) { #ifdef INVARIANTS panic("control->data not null but control->length == 0"); #else SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n"); sctp_m_freem(control->data); control->data = NULL; #endif } if (control->aux_data) { sctp_m_free(control->aux_data); control->aux_data = NULL; } + if (control->on_strm_q) { + panic("About to free ctl:%p so:%p and its in %d", + control, so, control->on_strm_q); + } sctp_free_remote_addr(control->whoFrom); sctp_free_a_readq(stcb, control); if (hold_rlock) { hold_rlock = 0; SCTP_INP_READ_UNLOCK(inp); } goto restart; } if (control->length == 0) { if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) && (filling_sinfo)) { /* find a more suitable one then this */ ctl = TAILQ_NEXT(control, next); while (ctl) { if ((ctl->stcb != control->stcb) && (ctl->length) && (ctl->some_taken || (ctl->spec_flags & M_NOTIFICATION) || ((ctl->do_not_ref_stcb == 0) && (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0))) ) { /*- * If we have a different TCB next, and there is data * present. If we have already taken some (pdapi), OR we can * ref the tcb and no delivery as started on this stream, we * take it. Note we allow a notification on a different * assoc to be delivered.. */ control = ctl; goto found_one; } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) && (ctl->length) && ((ctl->some_taken) || ((ctl->do_not_ref_stcb == 0) && ((ctl->spec_flags & M_NOTIFICATION) == 0) && (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) { /*- * If we have the same tcb, and there is data present, and we * have the strm interleave feature present. Then if we have * taken some (pdapi) or we can refer to tht tcb AND we have * not started a delivery for this stream, we can take it. * Note we do NOT allow a notificaiton on the same assoc to * be delivered. */ control = ctl; goto found_one; } ctl = TAILQ_NEXT(ctl, next); } } /* * if we reach here, not suitable replacement is available * fragment interleave is NOT on. So stuff the sb_cc * into the our held count, and its time to sleep again. */ held_length = so->so_rcv.sb_cc; control->held_length = so->so_rcv.sb_cc; goto restart; } /* Clear the held length since there is something to read */ control->held_length = 0; if (hold_rlock) { SCTP_INP_READ_UNLOCK(inp); hold_rlock = 0; } found_one: /* * If we reach here, control has a some data for us to read off. * Note that stcb COULD be NULL. */ control->some_taken++; if (hold_sblock) { SOCKBUF_UNLOCK(&so->so_rcv); hold_sblock = 0; } stcb = control->stcb; if (stcb) { if ((control->do_not_ref_stcb == 0) && (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) { if (freecnt_applied == 0) stcb = NULL; } else if (control->do_not_ref_stcb == 0) { /* you can't free it on me please */ /* * The lock on the socket buffer protects us so the * free code will stop. But since we used the * socketbuf lock and the sender uses the tcb_lock * to increment, we need to use the atomic add to * the refcnt */ if (freecnt_applied) { #ifdef INVARIANTS panic("refcnt already incremented"); #else SCTP_PRINTF("refcnt already incremented?\n"); #endif } else { atomic_add_int(&stcb->asoc.refcnt, 1); freecnt_applied = 1; } /* * Setup to remember how much we have not yet told * the peer our rwnd has opened up. Note we grab the * value from the tcb from last time. Note too that * sack sending clears this when a sack is sent, * which is fine. Once we hit the rwnd_req, we then * will go to the sctp_user_rcvd() that will not * lock until it KNOWs it MUST send a WUP-SACK. */ freed_so_far = stcb->freed_by_sorcv_sincelast; stcb->freed_by_sorcv_sincelast = 0; } } if (stcb && ((control->spec_flags & M_NOTIFICATION) == 0) && control->do_not_ref_stcb == 0) { stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1; } /* First lets get off the sinfo and sockaddr info */ if ((sinfo) && filling_sinfo) { memcpy(sinfo, control, sizeof(struct sctp_nonpad_sndrcvinfo)); nxt = TAILQ_NEXT(control, next); if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) || sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) { struct sctp_extrcvinfo *s_extra; s_extra = (struct sctp_extrcvinfo *)sinfo; if ((nxt) && (nxt->length)) { s_extra->serinfo_next_flags = SCTP_NEXT_MSG_AVAIL; if (nxt->sinfo_flags & SCTP_UNORDERED) { s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED; } if (nxt->spec_flags & M_NOTIFICATION) { s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION; } s_extra->serinfo_next_aid = nxt->sinfo_assoc_id; s_extra->serinfo_next_length = nxt->length; s_extra->serinfo_next_ppid = nxt->sinfo_ppid; s_extra->serinfo_next_stream = nxt->sinfo_stream; if (nxt->tail_mbuf != NULL) { if (nxt->end_added) { s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE; } } } else { /* * we explicitly 0 this, since the memcpy * got some other things beyond the older * sinfo_ that is on the control's structure * :-D */ nxt = NULL; s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG; s_extra->serinfo_next_aid = 0; s_extra->serinfo_next_length = 0; s_extra->serinfo_next_ppid = 0; s_extra->serinfo_next_stream = 0; } } /* * update off the real current cum-ack, if we have an stcb. */ if ((control->do_not_ref_stcb == 0) && stcb) sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn; /* * mask off the high bits, we keep the actual chunk bits in * there. */ sinfo->sinfo_flags &= 0x00ff; if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) { sinfo->sinfo_flags |= SCTP_UNORDERED; } } #ifdef SCTP_ASOCLOG_OF_TSNS { int index, newindex; struct sctp_pcbtsn_rlog *entry; do { index = inp->readlog_index; newindex = index + 1; if (newindex >= SCTP_READ_LOG_SIZE) { newindex = 0; } } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0); entry = &inp->readlog[index]; entry->vtag = control->sinfo_assoc_id; entry->strm = control->sinfo_stream; entry->seq = control->sinfo_ssn; entry->sz = control->length; entry->flgs = control->sinfo_flags; } #endif if ((fromlen > 0) && (from != NULL)) { union sctp_sockstore store; size_t len; switch (control->whoFrom->ro._l_addr.sa.sa_family) { #ifdef INET6 case AF_INET6: len = sizeof(struct sockaddr_in6); store.sin6 = control->whoFrom->ro._l_addr.sin6; store.sin6.sin6_port = control->port_from; break; #endif #ifdef INET case AF_INET: #ifdef INET6 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) { len = sizeof(struct sockaddr_in6); in6_sin_2_v4mapsin6(&control->whoFrom->ro._l_addr.sin, &store.sin6); store.sin6.sin6_port = control->port_from; } else { len = sizeof(struct sockaddr_in); store.sin = control->whoFrom->ro._l_addr.sin; store.sin.sin_port = control->port_from; } #else len = sizeof(struct sockaddr_in); store.sin = control->whoFrom->ro._l_addr.sin; store.sin.sin_port = control->port_from; #endif break; #endif default: len = 0; break; } memcpy(from, &store, min((size_t)fromlen, len)); #ifdef INET6 { struct sockaddr_in6 lsa6, *from6; from6 = (struct sockaddr_in6 *)from; sctp_recover_scope_mac(from6, (&lsa6)); } #endif } /* now copy out what data we can */ if (mp == NULL) { /* copy out each mbuf in the chain up to length */ get_more_data: m = control->data; while (m) { /* Move out all we can */ cp_len = (int)uio->uio_resid; my_len = (int)SCTP_BUF_LEN(m); if (cp_len > my_len) { /* not enough in this buf */ cp_len = my_len; } if (hold_rlock) { SCTP_INP_READ_UNLOCK(inp); hold_rlock = 0; } if (cp_len > 0) error = uiomove(mtod(m, char *), cp_len, uio); /* re-read */ if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) { goto release; } if ((control->do_not_ref_stcb == 0) && stcb && stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { no_rcv_needed = 1; } if (error) { /* error we are out of here */ goto release; } - if ((SCTP_BUF_NEXT(m) == NULL) && - (cp_len >= SCTP_BUF_LEN(m)) && - ((control->end_added == 0) || - (control->end_added && - (TAILQ_NEXT(control, next) == NULL))) - ) { - SCTP_INP_READ_LOCK(inp); - hold_rlock = 1; - } + SCTP_INP_READ_LOCK(inp); + hold_rlock = 1; if (cp_len == SCTP_BUF_LEN(m)) { if ((SCTP_BUF_NEXT(m) == NULL) && (control->end_added)) { out_flags |= MSG_EOR; if ((control->do_not_ref_stcb == 0) && (control->stcb != NULL) && ((control->spec_flags & M_NOTIFICATION) == 0)) control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0; } if (control->spec_flags & M_NOTIFICATION) { out_flags |= MSG_NOTIFICATION; } /* we ate up the mbuf */ if (in_flags & MSG_PEEK) { /* just looking */ m = SCTP_BUF_NEXT(m); copied_so_far += cp_len; } else { /* dispose of the mbuf */ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m)); } sctp_sbfree(control, stcb, &so->so_rcv, m); if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); } copied_so_far += cp_len; freed_so_far += cp_len; freed_so_far += MSIZE; atomic_subtract_int(&control->length, cp_len); control->data = sctp_m_free(m); m = control->data; /* * been through it all, must hold sb * lock ok to null tail */ if (control->data == NULL) { #ifdef INVARIANTS if ((control->end_added == 0) || (TAILQ_NEXT(control, next) == NULL)) { /* * If the end is not * added, OR the * next is NOT null * we MUST have the * lock. */ if (mtx_owned(&inp->inp_rdata_mtx) == 0) { panic("Hmm we don't own the lock?"); } } #endif control->tail_mbuf = NULL; #ifdef INVARIANTS if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) { panic("end_added, nothing left and no MSG_EOR"); } #endif } } } else { /* Do we need to trim the mbuf? */ if (control->spec_flags & M_NOTIFICATION) { out_flags |= MSG_NOTIFICATION; } if ((in_flags & MSG_PEEK) == 0) { SCTP_BUF_RESV_UF(m, cp_len); SCTP_BUF_LEN(m) -= cp_len; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, cp_len); } atomic_subtract_int(&so->so_rcv.sb_cc, cp_len); if ((control->do_not_ref_stcb == 0) && stcb) { atomic_subtract_int(&stcb->asoc.sb_cc, cp_len); } copied_so_far += cp_len; freed_so_far += cp_len; freed_so_far += MSIZE; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); } atomic_subtract_int(&control->length, cp_len); } else { copied_so_far += cp_len; } } if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) { break; } if (((stcb) && (in_flags & MSG_PEEK) == 0) && (control->do_not_ref_stcb == 0) && (freed_so_far >= rwnd_req)) { sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req); } } /* end while(m) */ /* * At this point we have looked at it all and we either have * a MSG_EOR/or read all the user wants... * control->length == 0. */ if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) { /* we are done with this control */ if (control->length == 0) { if (control->data) { #ifdef INVARIANTS panic("control->data not null at read eor?"); #else SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n"); sctp_m_freem(control->data); control->data = NULL; #endif } done_with_control: - if (TAILQ_NEXT(control, next) == NULL) { - /* - * If we don't have a next we need a - * lock, if there is a next - * interrupt is filling ahead of us - * and we don't need a lock to - * remove this guy (which is the - * head of the queue). - */ - if (hold_rlock == 0) { - SCTP_INP_READ_LOCK(inp); - hold_rlock = 1; - } + if (hold_rlock == 0) { + SCTP_INP_READ_LOCK(inp); + hold_rlock = 1; } TAILQ_REMOVE(&inp->read_queue, control, next); /* Add back any hiddend data */ if (control->held_length) { held_length = 0; control->held_length = 0; wakeup_read_socket = 1; } if (control->aux_data) { sctp_m_free(control->aux_data); control->aux_data = NULL; } no_rcv_needed = control->do_not_ref_stcb; sctp_free_remote_addr(control->whoFrom); control->data = NULL; + if (control->on_strm_q) { + panic("About to free ctl:%p so:%p and its in %d", + control, so, control->on_strm_q); + } sctp_free_a_readq(stcb, control); control = NULL; if ((freed_so_far >= rwnd_req) && (no_rcv_needed == 0)) sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req); } else { /* * The user did not read all of this * message, turn off the returned MSG_EOR * since we are leaving more behind on the * control to read. */ #ifdef INVARIANTS if (control->end_added && (control->data == NULL) && (control->tail_mbuf == NULL)) { panic("Gak, control->length is corrupt?"); } #endif no_rcv_needed = control->do_not_ref_stcb; out_flags &= ~MSG_EOR; } } if (out_flags & MSG_EOR) { goto release; } if ((uio->uio_resid == 0) || ((in_eeor_mode) && (copied_so_far >= (uint32_t) max(so->so_rcv.sb_lowat, 1)))) { goto release; } /* * If I hit here the receiver wants more and this message is * NOT done (pd-api). So two questions. Can we block? if not * we are done. Did the user NOT set MSG_WAITALL? */ if (block_allowed == 0) { goto release; } /* * We need to wait for more data a few things: - We don't * sbunlock() so we don't get someone else reading. - We * must be sure to account for the case where what is added * is NOT to our control when we wakeup. */ /* * Do we need to tell the transport a rwnd update might be * needed before we go to sleep? */ if (((stcb) && (in_flags & MSG_PEEK) == 0) && ((freed_so_far >= rwnd_req) && (control->do_not_ref_stcb == 0) && (no_rcv_needed == 0))) { sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req); } wait_some_more: if (so->so_rcv.sb_state & SBS_CANTRCVMORE) { goto release; } if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) goto release; if (hold_rlock == 1) { SCTP_INP_READ_UNLOCK(inp); hold_rlock = 0; } if (hold_sblock == 0) { SOCKBUF_LOCK(&so->so_rcv); hold_sblock = 1; } if ((copied_so_far) && (control->length == 0) && (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) { goto release; } if (so->so_rcv.sb_cc <= control->held_length) { error = sbwait(&so->so_rcv); if (error) { goto release; } control->held_length = 0; } if (hold_sblock) { SOCKBUF_UNLOCK(&so->so_rcv); hold_sblock = 0; } if (control->length == 0) { /* still nothing here */ if (control->end_added == 1) { /* he aborted, or is done i.e.did a shutdown */ out_flags |= MSG_EOR; if (control->pdapi_aborted) { if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0)) control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0; out_flags |= MSG_TRUNC; } else { if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0)) control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0; } goto done_with_control; } if (so->so_rcv.sb_cc > held_length) { control->held_length = so->so_rcv.sb_cc; held_length = 0; } goto wait_some_more; } else if (control->data == NULL) { /* * we must re-sync since data is probably being * added */ SCTP_INP_READ_LOCK(inp); if ((control->length > 0) && (control->data == NULL)) { /* * big trouble.. we have the lock and its * corrupt? */ #ifdef INVARIANTS - panic("Impossible data==NULL length !=0"); + panic("Impossible data==NULL length !=0 control:%p stcb:%p length:%d", control, stcb, control->length); #endif out_flags |= MSG_EOR; out_flags |= MSG_TRUNC; control->length = 0; SCTP_INP_READ_UNLOCK(inp); goto done_with_control; } SCTP_INP_READ_UNLOCK(inp); /* We will fall around to get more data */ } goto get_more_data; } else { /*- * Give caller back the mbuf chain, * store in uio_resid the length */ wakeup_read_socket = 0; if ((control->end_added == 0) || (TAILQ_NEXT(control, next) == NULL)) { /* Need to get rlock */ if (hold_rlock == 0) { SCTP_INP_READ_LOCK(inp); hold_rlock = 1; } } if (control->end_added) { out_flags |= MSG_EOR; if ((control->do_not_ref_stcb == 0) && (control->stcb != NULL) && ((control->spec_flags & M_NOTIFICATION) == 0)) control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0; } if (control->spec_flags & M_NOTIFICATION) { out_flags |= MSG_NOTIFICATION; } uio->uio_resid = control->length; *mp = control->data; m = control->data; while (m) { if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m)); } sctp_sbfree(control, stcb, &so->so_rcv, m); freed_so_far += SCTP_BUF_LEN(m); freed_so_far += MSIZE; if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) { sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0); } m = SCTP_BUF_NEXT(m); } control->data = control->tail_mbuf = NULL; control->length = 0; if (out_flags & MSG_EOR) { /* Done with this control */ goto done_with_control; } } release: if (hold_rlock == 1) { SCTP_INP_READ_UNLOCK(inp); hold_rlock = 0; } if (hold_sblock == 1) { SOCKBUF_UNLOCK(&so->so_rcv); hold_sblock = 0; } sbunlock(&so->so_rcv); sockbuf_lock = 0; release_unlocked: if (hold_sblock) { SOCKBUF_UNLOCK(&so->so_rcv); hold_sblock = 0; } if ((stcb) && (in_flags & MSG_PEEK) == 0) { if ((freed_so_far >= rwnd_req) && (control && (control->do_not_ref_stcb == 0)) && (no_rcv_needed == 0)) sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req); } out: if (msg_flags) { *msg_flags = out_flags; } if (((out_flags & MSG_EOR) == 0) && ((in_flags & MSG_PEEK) == 0) && (sinfo) && (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) || sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) { struct sctp_extrcvinfo *s_extra; s_extra = (struct sctp_extrcvinfo *)sinfo; s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG; } if (hold_rlock == 1) { SCTP_INP_READ_UNLOCK(inp); } if (hold_sblock) { SOCKBUF_UNLOCK(&so->so_rcv); } if (sockbuf_lock) { sbunlock(&so->so_rcv); } if (freecnt_applied) { /* * The lock on the socket buffer protects us so the free * code will stop. But since we used the socketbuf lock and * the sender uses the tcb_lock to increment, we need to use * the atomic add to the refcnt. */ if (stcb == NULL) { #ifdef INVARIANTS panic("stcb for refcnt has gone NULL?"); goto stage_left; #else goto stage_left; #endif } atomic_add_int(&stcb->asoc.refcnt, -1); /* Save the value back for next time */ stcb->freed_by_sorcv_sincelast = freed_so_far; } if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) { if (stcb) { sctp_misc_ints(SCTP_SORECV_DONE, freed_so_far, (uint32_t) ((uio) ? (slen - uio->uio_resid) : slen), stcb->asoc.my_rwnd, so->so_rcv.sb_cc); } else { sctp_misc_ints(SCTP_SORECV_DONE, freed_so_far, (uint32_t) ((uio) ? (slen - uio->uio_resid) : slen), 0, so->so_rcv.sb_cc); } } stage_left: if (wakeup_read_socket) { sctp_sorwakeup(inp, so); } return (error); } #ifdef SCTP_MBUF_LOGGING struct mbuf * sctp_m_free(struct mbuf *m) { if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) { sctp_log_mb(m, SCTP_MBUF_IFREE); } return (m_free(m)); } void sctp_m_freem(struct mbuf *mb) { while (mb != NULL) mb = sctp_m_free(mb); } #endif int sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id) { /* * Given a local address. For all associations that holds the * address, request a peer-set-primary. */ struct sctp_ifa *ifa; struct sctp_laddr *wi; ifa = sctp_find_ifa_by_addr(sa, vrf_id, 0); if (ifa == NULL) { SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL); return (EADDRNOTAVAIL); } /* * Now that we have the ifa we must awaken the iterator with this * message. */ wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr); if (wi == NULL) { SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM); return (ENOMEM); } /* Now incr the count and int wi structure */ SCTP_INCR_LADDR_COUNT(); bzero(wi, sizeof(*wi)); (void)SCTP_GETTIME_TIMEVAL(&wi->start_time); wi->ifa = ifa; wi->action = SCTP_SET_PRIM_ADDR; atomic_add_int(&ifa->refcount, 1); /* Now add it to the work queue */ SCTP_WQ_ADDR_LOCK(); /* * Should this really be a tailq? As it is we will process the * newest first :-0 */ LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr); SCTP_WQ_ADDR_UNLOCK(); sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ, (struct sctp_inpcb *)NULL, (struct sctp_tcb *)NULL, (struct sctp_nets *)NULL); return (0); } int sctp_soreceive(struct socket *so, struct sockaddr **psa, struct uio *uio, struct mbuf **mp0, struct mbuf **controlp, int *flagsp) { int error, fromlen; uint8_t sockbuf[256]; struct sockaddr *from; struct sctp_extrcvinfo sinfo; int filling_sinfo = 1; struct sctp_inpcb *inp; inp = (struct sctp_inpcb *)so->so_pcb; /* pickup the assoc we are reading from */ if (inp == NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); return (EINVAL); } if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) && sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) && sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) || (controlp == NULL)) { /* user does not want the sndrcv ctl */ filling_sinfo = 0; } if (psa) { from = (struct sockaddr *)sockbuf; fromlen = sizeof(sockbuf); from->sa_len = 0; } else { from = NULL; fromlen = 0; } if (filling_sinfo) { memset(&sinfo, 0, sizeof(struct sctp_extrcvinfo)); } error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, flagsp, (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo); if (controlp != NULL) { /* copy back the sinfo in a CMSG format */ if (filling_sinfo) *controlp = sctp_build_ctl_nchunk(inp, (struct sctp_sndrcvinfo *)&sinfo); else *controlp = NULL; } if (psa) { /* copy back the address info */ if (from && from->sa_len) { *psa = sodupsockaddr(from, M_NOWAIT); } else { *psa = NULL; } } return (error); } int sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr, int totaddr, int *error) { int added = 0; int i; struct sctp_inpcb *inp; struct sockaddr *sa; size_t incr = 0; #ifdef INET struct sockaddr_in *sin; #endif #ifdef INET6 struct sockaddr_in6 *sin6; #endif sa = addr; inp = stcb->sctp_ep; *error = 0; for (i = 0; i < totaddr; i++) { switch (sa->sa_family) { #ifdef INET case AF_INET: incr = sizeof(struct sockaddr_in); sin = (struct sockaddr_in *)sa; if ((sin->sin_addr.s_addr == INADDR_ANY) || (sin->sin_addr.s_addr == INADDR_BROADCAST) || IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) { SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL); (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_7); *error = EINVAL; goto out_now; } if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) { /* assoc gone no un-lock */ SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS); (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_8); *error = ENOBUFS; goto out_now; } added++; break; #endif #ifdef INET6 case AF_INET6: incr = sizeof(struct sockaddr_in6); sin6 = (struct sockaddr_in6 *)sa; if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) || IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) { SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL); (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_9); *error = EINVAL; goto out_now; } if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) { /* assoc gone no un-lock */ SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS); (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_10); *error = ENOBUFS; goto out_now; } added++; break; #endif default: break; } sa = (struct sockaddr *)((caddr_t)sa + incr); } out_now: return (added); } struct sctp_tcb * sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr, unsigned int *totaddr, unsigned int *num_v4, unsigned int *num_v6, int *error, unsigned int limit, int *bad_addr) { struct sockaddr *sa; struct sctp_tcb *stcb = NULL; unsigned int incr, at, i; at = incr = 0; sa = addr; *error = *num_v6 = *num_v4 = 0; /* account and validate addresses */ for (i = 0; i < *totaddr; i++) { switch (sa->sa_family) { #ifdef INET case AF_INET: if (sa->sa_len != incr) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); *error = EINVAL; *bad_addr = 1; return (NULL); } (*num_v4) += 1; incr = (unsigned int)sizeof(struct sockaddr_in); break; #endif #ifdef INET6 case AF_INET6: { struct sockaddr_in6 *sin6; sin6 = (struct sockaddr_in6 *)sa; if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { /* Must be non-mapped for connectx */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); *error = EINVAL; *bad_addr = 1; return (NULL); } if (sa->sa_len != incr) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); *error = EINVAL; *bad_addr = 1; return (NULL); } (*num_v6) += 1; incr = (unsigned int)sizeof(struct sockaddr_in6); break; } #endif default: *totaddr = i; /* we are done */ break; } if (i == *totaddr) { break; } SCTP_INP_INCR_REF(inp); stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL); if (stcb != NULL) { /* Already have or am bring up an association */ return (stcb); } else { SCTP_INP_DECR_REF(inp); } if ((at + incr) > limit) { *totaddr = i; break; } sa = (struct sockaddr *)((caddr_t)sa + incr); } return ((struct sctp_tcb *)NULL); } /* * sctp_bindx(ADD) for one address. * assumes all arguments are valid/checked by caller. */ void sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp, struct sockaddr *sa, sctp_assoc_t assoc_id, uint32_t vrf_id, int *error, void *p) { struct sockaddr *addr_touse; #if defined(INET) && defined(INET6) struct sockaddr_in sin; #endif /* see if we're bound all already! */ if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); *error = EINVAL; return; } addr_touse = sa; #ifdef INET6 if (sa->sa_family == AF_INET6) { #ifdef INET struct sockaddr_in6 *sin6; #endif if (sa->sa_len != sizeof(struct sockaddr_in6)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); *error = EINVAL; return; } if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) { /* can only bind v6 on PF_INET6 sockets */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); *error = EINVAL; return; } #ifdef INET sin6 = (struct sockaddr_in6 *)addr_touse; if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && SCTP_IPV6_V6ONLY(inp)) { /* can't bind v4-mapped on PF_INET sockets */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); *error = EINVAL; return; } in6_sin6_2_sin(&sin, sin6); addr_touse = (struct sockaddr *)&sin; } #endif } #endif #ifdef INET if (sa->sa_family == AF_INET) { if (sa->sa_len != sizeof(struct sockaddr_in)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); *error = EINVAL; return; } if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && SCTP_IPV6_V6ONLY(inp)) { /* can't bind v4 on PF_INET sockets */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); *error = EINVAL; return; } } #endif if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) { if (p == NULL) { /* Can't get proc for Net/Open BSD */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); *error = EINVAL; return; } *error = sctp_inpcb_bind(so, addr_touse, NULL, p); return; } /* * No locks required here since bind and mgmt_ep_sa all do their own * locking. If we do something for the FIX: below we may need to * lock in that case. */ if (assoc_id == 0) { /* add the address */ struct sctp_inpcb *lep; struct sockaddr_in *lsin = (struct sockaddr_in *)addr_touse; /* validate the incoming port */ if ((lsin->sin_port != 0) && (lsin->sin_port != inp->sctp_lport)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); *error = EINVAL; return; } else { /* user specified 0 port, set it to existing port */ lsin->sin_port = inp->sctp_lport; } lep = sctp_pcb_findep(addr_touse, 1, 0, vrf_id); if (lep != NULL) { /* * We must decrement the refcount since we have the * ep already and are binding. No remove going on * here. */ SCTP_INP_DECR_REF(lep); } if (lep == inp) { /* already bound to it.. ok */ return; } else if (lep == NULL) { ((struct sockaddr_in *)addr_touse)->sin_port = 0; *error = sctp_addr_mgmt_ep_sa(inp, addr_touse, SCTP_ADD_IP_ADDRESS, vrf_id, NULL); } else { *error = EADDRINUSE; } if (*error) return; } else { /* * FIX: decide whether we allow assoc based bindx */ } } /* * sctp_bindx(DELETE) for one address. * assumes all arguments are valid/checked by caller. */ void sctp_bindx_delete_address(struct sctp_inpcb *inp, struct sockaddr *sa, sctp_assoc_t assoc_id, uint32_t vrf_id, int *error) { struct sockaddr *addr_touse; #if defined(INET) && defined(INET6) struct sockaddr_in sin; #endif /* see if we're bound all already! */ if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); *error = EINVAL; return; } addr_touse = sa; #ifdef INET6 if (sa->sa_family == AF_INET6) { #ifdef INET struct sockaddr_in6 *sin6; #endif if (sa->sa_len != sizeof(struct sockaddr_in6)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); *error = EINVAL; return; } if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) { /* can only bind v6 on PF_INET6 sockets */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); *error = EINVAL; return; } #ifdef INET sin6 = (struct sockaddr_in6 *)addr_touse; if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && SCTP_IPV6_V6ONLY(inp)) { /* can't bind mapped-v4 on PF_INET sockets */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); *error = EINVAL; return; } in6_sin6_2_sin(&sin, sin6); addr_touse = (struct sockaddr *)&sin; } #endif } #endif #ifdef INET if (sa->sa_family == AF_INET) { if (sa->sa_len != sizeof(struct sockaddr_in)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); *error = EINVAL; return; } if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && SCTP_IPV6_V6ONLY(inp)) { /* can't bind v4 on PF_INET sockets */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL); *error = EINVAL; return; } } #endif /* * No lock required mgmt_ep_sa does its own locking. If the FIX: * below is ever changed we may need to lock before calling * association level binding. */ if (assoc_id == 0) { /* delete the address */ *error = sctp_addr_mgmt_ep_sa(inp, addr_touse, SCTP_DEL_IP_ADDRESS, vrf_id, NULL); } else { /* * FIX: decide whether we allow assoc based bindx */ } } /* * returns the valid local address count for an assoc, taking into account * all scoping rules */ int sctp_local_addr_count(struct sctp_tcb *stcb) { int loopback_scope; #if defined(INET) int ipv4_local_scope, ipv4_addr_legal; #endif #if defined (INET6) int local_scope, site_scope, ipv6_addr_legal; #endif struct sctp_vrf *vrf; struct sctp_ifn *sctp_ifn; struct sctp_ifa *sctp_ifa; int count = 0; /* Turn on all the appropriate scopes */ loopback_scope = stcb->asoc.scope.loopback_scope; #if defined(INET) ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope; ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal; #endif #if defined(INET6) local_scope = stcb->asoc.scope.local_scope; site_scope = stcb->asoc.scope.site_scope; ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal; #endif SCTP_IPI_ADDR_RLOCK(); vrf = sctp_find_vrf(stcb->asoc.vrf_id); if (vrf == NULL) { /* no vrf, no addresses */ SCTP_IPI_ADDR_RUNLOCK(); return (0); } if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { /* * bound all case: go through all ifns on the vrf */ LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) { if ((loopback_scope == 0) && SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) { continue; } LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) { if (sctp_is_addr_restricted(stcb, sctp_ifa)) continue; switch (sctp_ifa->address.sa.sa_family) { #ifdef INET case AF_INET: if (ipv4_addr_legal) { struct sockaddr_in *sin; sin = &sctp_ifa->address.sin; if (sin->sin_addr.s_addr == 0) { /* * skip unspecified * addrs */ continue; } if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred, &sin->sin_addr) != 0) { continue; } if ((ipv4_local_scope == 0) && (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) { continue; } /* count this one */ count++; } else { continue; } break; #endif #ifdef INET6 case AF_INET6: if (ipv6_addr_legal) { struct sockaddr_in6 *sin6; sin6 = &sctp_ifa->address.sin6; if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { continue; } if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred, &sin6->sin6_addr) != 0) { continue; } if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) { if (local_scope == 0) continue; if (sin6->sin6_scope_id == 0) { if (sa6_recoverscope(sin6) != 0) /* * * bad * * li * nk * * loc * al * * add * re * ss * */ continue; } } if ((site_scope == 0) && (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) { continue; } /* count this one */ count++; } break; #endif default: /* TSNH */ break; } } } } else { /* * subset bound case */ struct sctp_laddr *laddr; LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) { if (sctp_is_addr_restricted(stcb, laddr->ifa)) { continue; } /* count this one */ count++; } } SCTP_IPI_ADDR_RUNLOCK(); return (count); } #if defined(SCTP_LOCAL_TRACE_BUF) void sctp_log_trace(uint32_t subsys, const char *str SCTP_UNUSED, uint32_t a, uint32_t b, uint32_t c, uint32_t d, uint32_t e, uint32_t f) { uint32_t saveindex, newindex; do { saveindex = SCTP_BASE_SYSCTL(sctp_log).index; if (saveindex >= SCTP_MAX_LOGGING_SIZE) { newindex = 1; } else { newindex = saveindex + 1; } } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0); if (saveindex >= SCTP_MAX_LOGGING_SIZE) { saveindex = 0; } SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT; SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys; SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a; SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b; SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c; SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d; SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e; SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f; } #endif static void sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *inp, const struct sockaddr *sa SCTP_UNUSED, void *ctx SCTP_UNUSED) { struct ip *iph; #ifdef INET6 struct ip6_hdr *ip6; #endif struct mbuf *sp, *last; struct udphdr *uhdr; uint16_t port; if ((m->m_flags & M_PKTHDR) == 0) { /* Can't handle one that is not a pkt hdr */ goto out; } /* Pull the src port */ iph = mtod(m, struct ip *); uhdr = (struct udphdr *)((caddr_t)iph + off); port = uhdr->uh_sport; /* * Split out the mbuf chain. Leave the IP header in m, place the * rest in the sp. */ sp = m_split(m, off, M_NOWAIT); if (sp == NULL) { /* Gak, drop packet, we can't do a split */ goto out; } if (sp->m_pkthdr.len < sizeof(struct udphdr) + sizeof(struct sctphdr)) { /* Gak, packet can't have an SCTP header in it - too small */ m_freem(sp); goto out; } /* Now pull up the UDP header and SCTP header together */ sp = m_pullup(sp, sizeof(struct udphdr) + sizeof(struct sctphdr)); if (sp == NULL) { /* Gak pullup failed */ goto out; } /* Trim out the UDP header */ m_adj(sp, sizeof(struct udphdr)); /* Now reconstruct the mbuf chain */ for (last = m; last->m_next; last = last->m_next); last->m_next = sp; m->m_pkthdr.len += sp->m_pkthdr.len; /* * The CSUM_DATA_VALID flags indicates that the HW checked the UDP * checksum and it was valid. Since CSUM_DATA_VALID == * CSUM_SCTP_VALID this would imply that the HW also verified the * SCTP checksum. Therefore, clear the bit. */ SCTPDBG(SCTP_DEBUG_CRCOFFLOAD, "sctp_recv_udp_tunneled_packet(): Packet of length %d received on %s with csum_flags 0x%b.\n", m->m_pkthdr.len, if_name(m->m_pkthdr.rcvif), (int)m->m_pkthdr.csum_flags, CSUM_BITS); m->m_pkthdr.csum_flags &= ~CSUM_DATA_VALID; iph = mtod(m, struct ip *); switch (iph->ip_v) { #ifdef INET case IPVERSION: iph->ip_len = htons(ntohs(iph->ip_len) - sizeof(struct udphdr)); sctp_input_with_port(m, off, port); break; #endif #ifdef INET6 case IPV6_VERSION >> 4: ip6 = mtod(m, struct ip6_hdr *); ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) - sizeof(struct udphdr)); sctp6_input_with_port(&m, &off, port); break; #endif default: goto out; break; } return; out: m_freem(m); } void sctp_over_udp_stop(void) { /* * This function assumes sysctl caller holds sctp_sysctl_info_lock() * for writting! */ #ifdef INET if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) { soclose(SCTP_BASE_INFO(udp4_tun_socket)); SCTP_BASE_INFO(udp4_tun_socket) = NULL; } #endif #ifdef INET6 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) { soclose(SCTP_BASE_INFO(udp6_tun_socket)); SCTP_BASE_INFO(udp6_tun_socket) = NULL; } #endif } int sctp_over_udp_start(void) { uint16_t port; int ret; #ifdef INET struct sockaddr_in sin; #endif #ifdef INET6 struct sockaddr_in6 sin6; #endif /* * This function assumes sysctl caller holds sctp_sysctl_info_lock() * for writting! */ port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port); if (ntohs(port) == 0) { /* Must have a port set */ return (EINVAL); } #ifdef INET if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) { /* Already running -- must stop first */ return (EALREADY); } #endif #ifdef INET6 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) { /* Already running -- must stop first */ return (EALREADY); } #endif #ifdef INET if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket), SOCK_DGRAM, IPPROTO_UDP, curthread->td_ucred, curthread))) { sctp_over_udp_stop(); return (ret); } /* Call the special UDP hook. */ if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket), sctp_recv_udp_tunneled_packet, NULL))) { sctp_over_udp_stop(); return (ret); } /* Ok, we have a socket, bind it to the port. */ memset(&sin, 0, sizeof(struct sockaddr_in)); sin.sin_len = sizeof(struct sockaddr_in); sin.sin_family = AF_INET; sin.sin_port = htons(port); if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket), (struct sockaddr *)&sin, curthread))) { sctp_over_udp_stop(); return (ret); } #endif #ifdef INET6 if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket), SOCK_DGRAM, IPPROTO_UDP, curthread->td_ucred, curthread))) { sctp_over_udp_stop(); return (ret); } /* Call the special UDP hook. */ if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket), sctp_recv_udp_tunneled_packet, NULL))) { sctp_over_udp_stop(); return (ret); } /* Ok, we have a socket, bind it to the port. */ memset(&sin6, 0, sizeof(struct sockaddr_in6)); sin6.sin6_len = sizeof(struct sockaddr_in6); sin6.sin6_family = AF_INET6; sin6.sin6_port = htons(port); if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket), (struct sockaddr *)&sin6, curthread))) { sctp_over_udp_stop(); return (ret); } #endif return (0); } Index: head/sys/netinet/sctputil.h =================================================================== --- head/sys/netinet/sctputil.h (revision 297661) +++ head/sys/netinet/sctputil.h (revision 297662) @@ -1,399 +1,402 @@ /*- * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * a) Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * b) Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the distribution. * * c) Neither the name of Cisco Systems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #ifndef _NETINET_SCTP_UTIL_H_ #define _NETINET_SCTP_UTIL_H_ #if defined(_KERNEL) || defined(__Userspace__) #define SCTP_READ_LOCK_HELD 1 #define SCTP_READ_LOCK_NOT_HELD 0 #ifdef SCTP_ASOCLOG_OF_TSNS void sctp_print_out_track_log(struct sctp_tcb *stcb); #endif #ifdef SCTP_MBUF_LOGGING struct mbuf *sctp_m_free(struct mbuf *m); void sctp_m_freem(struct mbuf *m); #else #define sctp_m_free m_free #define sctp_m_freem m_freem #endif #if defined(SCTP_LOCAL_TRACE_BUF) || defined(__APPLE__) void sctp_log_trace(uint32_t fr, const char *str SCTP_UNUSED, uint32_t a, uint32_t b, uint32_t c, uint32_t d, uint32_t e, uint32_t f); #endif #define sctp_get_associd(stcb) ((sctp_assoc_t)stcb->asoc.assoc_id) /* * Function prototypes */ int32_t sctp_map_assoc_state(int); uint32_t sctp_get_ifa_hash_val(struct sockaddr *addr); struct sctp_ifa * sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr, int hold_lock); struct sctp_ifa * sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock); uint32_t sctp_select_initial_TSN(struct sctp_pcb *); uint32_t sctp_select_a_tag(struct sctp_inpcb *, uint16_t lport, uint16_t rport, int); int sctp_init_asoc(struct sctp_inpcb *, struct sctp_tcb *, uint32_t, uint32_t, uint16_t); void sctp_fill_random_store(struct sctp_pcb *); void sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag); void sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag); void sctp_timer_start(int, struct sctp_inpcb *, struct sctp_tcb *, struct sctp_nets *); void sctp_timer_stop(int, struct sctp_inpcb *, struct sctp_tcb *, struct sctp_nets *, uint32_t); int sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id); void sctp_mtu_size_reset(struct sctp_inpcb *, struct sctp_association *, uint32_t); void + sctp_wakeup_the_read_socket(struct sctp_inpcb *inp); + +void sctp_add_to_readq(struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sctp_queued_to_read *control, struct sockbuf *sb, int end, int inpread_locked, int so_locked #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ); int sctp_append_to_readq(struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sctp_queued_to_read *control, struct mbuf *m, int end, int new_cumack, struct sockbuf *sb); void sctp_iterator_worker(void); uint32_t sctp_get_prev_mtu(uint32_t); uint32_t sctp_get_next_mtu(uint32_t); void sctp_timeout_handler(void *); uint32_t sctp_calculate_rto(struct sctp_tcb *, struct sctp_association *, struct sctp_nets *, struct timeval *, int, int); uint32_t sctp_calculate_len(struct mbuf *); caddr_t sctp_m_getptr(struct mbuf *, int, int, uint8_t *); struct sctp_paramhdr * sctp_get_next_param(struct mbuf *, int, struct sctp_paramhdr *, int); struct mbuf * sctp_add_pad_tombuf(struct mbuf *, int); struct mbuf * sctp_pad_lastmbuf(struct mbuf *, int, struct mbuf *); void sctp_ulp_notify(uint32_t, struct sctp_tcb *, uint32_t, void *, int #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ); void sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp, struct sctp_tcb *stcb, int waitflags); void sctp_stop_timers_for_shutdown(struct sctp_tcb *); void sctp_report_all_outbound(struct sctp_tcb *, uint16_t, int, int #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ); int sctp_expand_mapping_array(struct sctp_association *, uint32_t); void sctp_abort_notification(struct sctp_tcb *, uint8_t, uint16_t, struct sctp_abort_chunk *, int #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ); /* We abort responding to an IP packet for some reason */ void sctp_abort_association(struct sctp_inpcb *, struct sctp_tcb *, struct mbuf *, int, struct sockaddr *, struct sockaddr *, struct sctphdr *, struct mbuf *, uint8_t, uint32_t, uint32_t, uint16_t); /* We choose to abort via user input */ void sctp_abort_an_association(struct sctp_inpcb *, struct sctp_tcb *, struct mbuf *, int #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ); void sctp_handle_ootb(struct mbuf *, int, int, struct sockaddr *, struct sockaddr *, struct sctphdr *, struct sctp_inpcb *, struct mbuf *, uint8_t, uint32_t, uint16_t, uint32_t, uint16_t); int sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr, int totaddr, int *error); struct sctp_tcb * sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr, unsigned int *totaddr, unsigned int *num_v4, unsigned int *num_v6, int *error, unsigned int limit, int *bad_addr); int sctp_is_there_an_abort_here(struct mbuf *, int, uint32_t *); #ifdef INET6 uint32_t sctp_is_same_scope(struct sockaddr_in6 *, struct sockaddr_in6 *); struct sockaddr_in6 * sctp_recover_scope(struct sockaddr_in6 *, struct sockaddr_in6 *); #define sctp_recover_scope_mac(addr, store) do { \ if ((addr->sin6_family == AF_INET6) && \ (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr))) { \ *store = *addr; \ if (addr->sin6_scope_id == 0) { \ if (!sa6_recoverscope(store)) { \ addr = store; \ } \ } else { \ in6_clearscope(&addr->sin6_addr); \ addr = store; \ } \ } \ } while (0) #endif int sctp_cmpaddr(struct sockaddr *, struct sockaddr *); void sctp_print_address(struct sockaddr *); int sctp_release_pr_sctp_chunk(struct sctp_tcb *, struct sctp_tmit_chunk *, uint8_t, int #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING) SCTP_UNUSED #endif ); struct mbuf *sctp_generate_cause(uint16_t, char *); struct mbuf *sctp_generate_no_user_data_cause(uint32_t); void sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp, struct sockaddr *sa, sctp_assoc_t assoc_id, uint32_t vrf_id, int *error, void *p); void sctp_bindx_delete_address(struct sctp_inpcb *inp, struct sockaddr *sa, sctp_assoc_t assoc_id, uint32_t vrf_id, int *error); int sctp_local_addr_count(struct sctp_tcb *stcb); #ifdef SCTP_MBCNT_LOGGING void sctp_free_bufspace(struct sctp_tcb *, struct sctp_association *, struct sctp_tmit_chunk *, int); #else #define sctp_free_bufspace(stcb, asoc, tp1, chk_cnt) \ do { \ if (tp1->data != NULL) { \ atomic_subtract_int(&((asoc)->chunks_on_out_queue), chk_cnt); \ if ((asoc)->total_output_queue_size >= tp1->book_size) { \ atomic_subtract_int(&((asoc)->total_output_queue_size), tp1->book_size); \ } else { \ (asoc)->total_output_queue_size = 0; \ } \ if (stcb->sctp_socket && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \ (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \ if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) { \ atomic_subtract_int(&((stcb)->sctp_socket->so_snd.sb_cc), tp1->book_size); \ } else { \ stcb->sctp_socket->so_snd.sb_cc = 0; \ } \ } \ } \ } while (0) #endif #define sctp_free_spbufspace(stcb, asoc, sp) \ do { \ if (sp->data != NULL) { \ if ((asoc)->total_output_queue_size >= sp->length) { \ atomic_subtract_int(&(asoc)->total_output_queue_size, sp->length); \ } else { \ (asoc)->total_output_queue_size = 0; \ } \ if (stcb->sctp_socket && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \ (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \ if (stcb->sctp_socket->so_snd.sb_cc >= sp->length) { \ atomic_subtract_int(&stcb->sctp_socket->so_snd.sb_cc,sp->length); \ } else { \ stcb->sctp_socket->so_snd.sb_cc = 0; \ } \ } \ } \ } while (0) #define sctp_snd_sb_alloc(stcb, sz) \ do { \ atomic_add_int(&stcb->asoc.total_output_queue_size,sz); \ if ((stcb->sctp_socket != NULL) && \ ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \ (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \ atomic_add_int(&stcb->sctp_socket->so_snd.sb_cc,sz); \ } \ } while (0) /* functions to start/stop udp tunneling */ void sctp_over_udp_stop(void); int sctp_over_udp_start(void); int sctp_soreceive(struct socket *so, struct sockaddr **psa, struct uio *uio, struct mbuf **mp0, struct mbuf **controlp, int *flagsp); void sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d); void sctp_wakeup_log(struct sctp_tcb *stcb, uint32_t wake_cnt, int from); void sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t, uint16_t, uint16_t, int); void sctp_log_nagle_event(struct sctp_tcb *stcb, int action); #ifdef SCTP_MBUF_LOGGING void sctp_log_mb(struct mbuf *m, int from); void sctp_log_mbc(struct mbuf *m, int from); #endif void sctp_sblog(struct sockbuf *sb, struct sctp_tcb *stcb, int from, int incr); void sctp_log_strm_del(struct sctp_queued_to_read *control, struct sctp_queued_to_read *poschk, int from); void sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *, int, uint8_t); void rto_logging(struct sctp_nets *net, int from); void sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc); void sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from); void sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *, int, int, uint8_t); void sctp_log_block(uint8_t, struct sctp_association *, size_t); void sctp_log_rwnd(uint8_t, uint32_t, uint32_t, uint32_t); void sctp_log_rwnd_set(uint8_t, uint32_t, uint32_t, uint32_t, uint32_t); int sctp_fill_stat_log(void *, size_t *); void sctp_log_fr(uint32_t, uint32_t, uint32_t, int); void sctp_log_sack(uint32_t, uint32_t, uint32_t, uint16_t, uint16_t, int); void sctp_log_map(uint32_t, uint32_t, uint32_t, int); void sctp_print_mapping_array(struct sctp_association *asoc); void sctp_clr_stat_log(void); #ifdef SCTP_AUDITING_ENABLED void sctp_auditing(int, struct sctp_inpcb *, struct sctp_tcb *, struct sctp_nets *); void sctp_audit_log(uint8_t, uint8_t); #endif #endif /* _KERNEL */ #endif