Index: head/sys/netinet/sctp_os_bsd.h =================================================================== --- head/sys/netinet/sctp_os_bsd.h (revision 285876) +++ head/sys/netinet/sctp_os_bsd.h (revision 285877) @@ -1,498 +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 #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); \ if (oldval < val) { \ panic("Counter goes negative"); \ } \ } #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/netinet6/sctp6_usrreq.c =================================================================== --- head/sys/netinet6/sctp6_usrreq.c (revision 285876) +++ head/sys/netinet6/sctp6_usrreq.c (revision 285877) @@ -1,1229 +1,1226 @@ /*- * 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 #ifdef INET6 #include #include #include #include -#ifdef INET6 #include -#endif #include #include #include #include #include #include #include #include #include #include #include #include +#include #include #ifdef IPSEC #include -#ifdef INET6 #include -#endif /* INET6 */ #endif /* IPSEC */ extern struct protosw inetsw[]; int sctp6_input_with_port(struct mbuf **i_pak, int *offp, uint16_t port) { struct mbuf *m; int iphlen; uint32_t vrf_id; uint8_t ecn_bits; struct sockaddr_in6 src, dst; struct ip6_hdr *ip6; 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 = *offp; if (SCTP_GET_PKT_VRFID(*i_pak, vrf_id)) { SCTP_RELEASE_PKT(*i_pak); return (IPPROTO_DONE); } 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, "sctp6_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); ip6 = mtod(m, struct ip6_hdr *); IP6_EXTHDR_GET(sh, struct sctphdr *, m, iphlen, (int)(sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr))); if (sh == NULL) { SCTP_STAT_INCR(sctps_hdrops); return (IPPROTO_DONE); } ch = (struct sctp_chunkhdr *)((caddr_t)sh + sizeof(struct sctphdr)); offset -= sizeof(struct sctp_chunkhdr); memset(&src, 0, sizeof(struct sockaddr_in6)); src.sin6_family = AF_INET6; src.sin6_len = sizeof(struct sockaddr_in6); src.sin6_port = sh->src_port; src.sin6_addr = ip6->ip6_src; if (in6_setscope(&src.sin6_addr, m->m_pkthdr.rcvif, NULL) != 0) { goto out; } memset(&dst, 0, sizeof(struct sockaddr_in6)); dst.sin6_family = AF_INET6; dst.sin6_len = sizeof(struct sockaddr_in6); dst.sin6_port = sh->dest_port; dst.sin6_addr = ip6->ip6_dst; if (in6_setscope(&dst.sin6_addr, m->m_pkthdr.rcvif, NULL) != 0) { goto out; } length = ntohs(ip6->ip6_plen) + iphlen; /* Validate mbuf chain length with IP payload length. */ if (SCTP_HEADER_LEN(m) != length) { SCTPDBG(SCTP_DEBUG_INPUT1, "sctp6_input() length:%d reported length:%d\n", length, SCTP_HEADER_LEN(m)); SCTP_STAT_INCR(sctps_hdrops); goto out; } if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) { goto out; } ecn_bits = ((ntohl(ip6->ip6_flow) >> 20) & 0x000000ff); #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 (IPPROTO_DONE); } int sctp6_input(struct mbuf **i_pak, int *offp, int proto SCTP_UNUSED) { return (sctp6_input_with_port(i_pak, offp, 0)); } static void sctp6_notify_mbuf(struct sctp_inpcb *inp, struct icmp6_hdr *icmp6, struct sctphdr *sh, struct sctp_tcb *stcb, struct sctp_nets *net) { uint32_t nxtsz; if ((inp == NULL) || (stcb == NULL) || (net == NULL) || (icmp6 == NULL) || (sh == NULL)) { goto out; } /* First do we even look at it? */ if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) goto out; if (icmp6->icmp6_type != ICMP6_PACKET_TOO_BIG) { /* not PACKET TO BIG */ goto out; } /* * ok we need to look closely. We could even get smarter and look at * anyone that we sent to in case we get a different ICMP that tells * us there is no way to reach a host, but for this impl, all we * care about is MTU discovery. */ nxtsz = ntohl(icmp6->icmp6_mtu); /* Stop any PMTU timer */ sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, NULL, SCTP_FROM_SCTP6_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) { struct sctp_tmit_chunk *chk; /* Adjust that too */ stcb->asoc.smallest_mtu = nxtsz; /* now off to subtract IP_DF flag if needed */ TAILQ_FOREACH(chk, &stcb->asoc.send_queue, sctp_next) { if ((uint32_t) (chk->send_size + IP_HDR_SIZE) > nxtsz) { chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; } } TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) { if ((uint32_t) (chk->send_size + IP_HDR_SIZE) > 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) stcb->asoc.sent_queue_retran_cnt++; chk->sent = SCTP_DATAGRAM_RESEND; chk->rec.data.doing_fast_retransmit = 0; chk->sent = SCTP_DATAGRAM_RESEND; /* Clear any time so NO RTT is being done */ chk->sent_rcv_time.tv_sec = 0; chk->sent_rcv_time.tv_usec = 0; stcb->asoc.total_flight -= chk->send_size; net->flight_size -= chk->send_size; } } } sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, NULL); out: if (stcb) { SCTP_TCB_UNLOCK(stcb); } } void sctp6_notify(struct sctp_inpcb *inp, struct icmp6_hdr *icmph, 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 /* 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; } if (icmph->icmp6_type != ICMP_UNREACH) { /* We only care about unreachable */ SCTP_TCB_UNLOCK(stcb); return; } if ((icmph->icmp6_code == ICMP_UNREACH_NET) || (icmph->icmp6_code == ICMP_UNREACH_HOST) || (icmph->icmp6_code == ICMP_UNREACH_NET_UNKNOWN) || (icmph->icmp6_code == ICMP_UNREACH_HOST_UNKNOWN) || (icmph->icmp6_code == ICMP_UNREACH_ISOLATED) || (icmph->icmp6_code == ICMP_UNREACH_NET_PROHIB) || (icmph->icmp6_code == ICMP_UNREACH_HOST_PROHIB) || (icmph->icmp6_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->icmp6_code == ICMP_UNREACH_PROTOCOL) || (icmph->icmp6_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_SCTP6_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); } } void sctp6_ctlinput(int cmd, struct sockaddr *pktdst, void *d) { struct sctphdr sh; struct ip6ctlparam *ip6cp = NULL; uint32_t vrf_id; vrf_id = SCTP_DEFAULT_VRFID; if (pktdst->sa_family != AF_INET6 || pktdst->sa_len != sizeof(struct sockaddr_in6)) return; if ((unsigned)cmd >= PRC_NCMDS) return; if (PRC_IS_REDIRECT(cmd)) { d = NULL; } else if (inet6ctlerrmap[cmd] == 0) { return; } /* if the parameter is from icmp6, decode it. */ if (d != NULL) { ip6cp = (struct ip6ctlparam *)d; } else { ip6cp = (struct ip6ctlparam *)NULL; } if (ip6cp) { /* * XXX: We assume that when IPV6 is non NULL, M and OFF are * valid. */ /* check if we can safely examine src and dst ports */ struct sctp_inpcb *inp = NULL; struct sctp_tcb *stcb = NULL; struct sctp_nets *net = NULL; struct sockaddr_in6 final; if (ip6cp->ip6c_m == NULL) return; bzero(&sh, sizeof(sh)); bzero(&final, sizeof(final)); inp = NULL; net = NULL; m_copydata(ip6cp->ip6c_m, ip6cp->ip6c_off, sizeof(sh), (caddr_t)&sh); ip6cp->ip6c_src->sin6_port = sh.src_port; final.sin6_len = sizeof(final); final.sin6_family = AF_INET6; final.sin6_addr = ((struct sockaddr_in6 *)pktdst)->sin6_addr; final.sin6_port = sh.dest_port; stcb = sctp_findassociation_addr_sa((struct sockaddr *)&final, (struct sockaddr *)ip6cp->ip6c_src, &inp, &net, 1, vrf_id); /* inp's ref-count increased && stcb locked */ if (stcb != NULL && inp && (inp->sctp_socket != NULL)) { if (cmd == PRC_MSGSIZE) { sctp6_notify_mbuf(inp, ip6cp->ip6c_icmp6, &sh, stcb, net); /* inp's ref-count reduced && stcb unlocked */ } else { sctp6_notify(inp, ip6cp->ip6c_icmp6, &sh, (struct sockaddr *)&final, stcb, net); /* inp's ref-count reduced && stcb unlocked */ } } else { if (PRC_IS_REDIRECT(cmd) && inp) { in6_rtchange((struct in6pcb *)inp, inet6ctlerrmap[cmd]); } if (inp) { /* reduce inp's ref-count */ SCTP_INP_WLOCK(inp); SCTP_INP_DECR_REF(inp); SCTP_INP_WUNLOCK(inp); } if (stcb) SCTP_TCB_UNLOCK(stcb); } } } /* * this routine can probably be collasped into the one in sctp_userreq.c * since they do the same thing and now we lookup with a sockaddr */ static int sctp6_getcred(SYSCTL_HANDLER_ARGS) { struct xucred xuc; struct sockaddr_in6 addrs[2]; struct sctp_inpcb *inp; struct sctp_nets *net; struct sctp_tcb *stcb; int error; uint32_t vrf_id; vrf_id = SCTP_DEFAULT_VRFID; error = priv_check(req->td, PRIV_NETINET_GETCRED); if (error) return (error); if (req->newlen != sizeof(addrs)) { SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); return (EINVAL); } if (req->oldlen != sizeof(struct ucred)) { SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); return (EINVAL); } error = SYSCTL_IN(req, addrs, sizeof(addrs)); if (error) return (error); stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[1]), sin6tosa(&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_SCTP6_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_inet6_sctp6, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW, 0, 0, sctp6_getcred, "S,ucred", "Get the ucred of a SCTP6 connection"); /* This is the same as the sctp_abort() could be made common */ static void sctp6_abort(struct socket *so) { struct sctp_inpcb *inp; uint32_t flags; inp = (struct sctp_inpcb *)so->so_pcb; if (inp == NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 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 sctp6_attach(struct socket *so, int proto SCTP_UNUSED, struct thread *p SCTP_UNUSED) { struct in6pcb *inp6; int error; struct sctp_inpcb *inp; uint32_t vrf_id = SCTP_DEFAULT_VRFID; inp = (struct sctp_inpcb *)so->so_pcb; if (inp != NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_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 v6! */ inp6 = (struct in6pcb *)inp; inp6->inp_vflag |= INP_IPV6; inp6->in6p_hops = -1; /* use kernel default */ inp6->in6p_cksum = -1; /* just to be sure */ #ifdef INET /* * XXX: ugly!! IPv4 TTL initialization is necessary for an IPv6 * socket as well, because the socket may be bound to an IPv6 * wildcard address, which may match an IPv4-mapped IPv6 address. */ inp6->inp_ip_ttl = MODULE_GLOBAL(ip_defttl); #endif /* * Hmm what about the IPSEC stuff that is missing here but in * sctp_attach()? */ SCTP_INP_WUNLOCK(inp); return (0); } static int sctp6_bind(struct socket *so, struct sockaddr *addr, struct thread *p) { struct sctp_inpcb *inp; struct in6pcb *inp6; int error; inp = (struct sctp_inpcb *)so->so_pcb; if (inp == NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); return (EINVAL); } if (addr) { switch (addr->sa_family) { #ifdef INET case AF_INET: if (addr->sa_len != sizeof(struct sockaddr_in)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); return (EINVAL); } break; #endif #ifdef INET6 case AF_INET6: if (addr->sa_len != sizeof(struct sockaddr_in6)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); return (EINVAL); } break; #endif default: SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); return (EINVAL); } } inp6 = (struct in6pcb *)inp; inp6->inp_vflag &= ~INP_IPV4; inp6->inp_vflag |= INP_IPV6; if ((addr != NULL) && (SCTP_IPV6_V6ONLY(inp6) == 0)) { switch (addr->sa_family) { #ifdef INET case AF_INET: /* binding v4 addr to v6 socket, so reset flags */ inp6->inp_vflag |= INP_IPV4; inp6->inp_vflag &= ~INP_IPV6; break; #endif #ifdef INET6 case AF_INET6: { struct sockaddr_in6 *sin6_p; sin6_p = (struct sockaddr_in6 *)addr; if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr)) { inp6->inp_vflag |= INP_IPV4; } #ifdef INET if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { struct sockaddr_in sin; in6_sin6_2_sin(&sin, sin6_p); inp6->inp_vflag |= INP_IPV4; inp6->inp_vflag &= ~INP_IPV6; error = sctp_inpcb_bind(so, (struct sockaddr *)&sin, NULL, p); return (error); } #endif break; } #endif default: break; } } else if (addr != NULL) { struct sockaddr_in6 *sin6_p; /* IPV6_V6ONLY socket */ #ifdef INET if (addr->sa_family == AF_INET) { /* can't bind v4 addr to v6 only socket! */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); return (EINVAL); } #endif sin6_p = (struct sockaddr_in6 *)addr; if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { /* can't bind v4-mapped addrs either! */ /* NOTE: we don't support SIIT */ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); return (EINVAL); } } error = sctp_inpcb_bind(so, addr, NULL, p); return (error); } static void sctp6_close(struct socket *so) { sctp_close(so); } /* This could be made common with sctp_detach() since they are identical */ static int sctp6_disconnect(struct socket *so) { return (sctp_disconnect(so)); } int sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, struct mbuf *control, struct thread *p); static int sctp6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, struct mbuf *control, struct thread *p) { struct sctp_inpcb *inp; struct in6pcb *inp6; #ifdef INET struct sockaddr_in6 *sin6; #endif /* INET */ /* No SPL needed since sctp_output does this */ inp = (struct sctp_inpcb *)so->so_pcb; if (inp == NULL) { if (control) { SCTP_RELEASE_PKT(control); control = NULL; } SCTP_RELEASE_PKT(m); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); return (EINVAL); } inp6 = (struct in6pcb *)inp; /* * For the TCP model we may get a NULL addr, if we are a connected * socket thats ok. */ if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) && (addr == NULL)) { goto connected_type; } if (addr == NULL) { SCTP_RELEASE_PKT(m); if (control) { SCTP_RELEASE_PKT(control); control = NULL; } SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EDESTADDRREQ); return (EDESTADDRREQ); } #ifdef INET sin6 = (struct sockaddr_in6 *)addr; if (SCTP_IPV6_V6ONLY(inp6)) { /* * if IPV6_V6ONLY flag, we discard datagrams destined to a * v4 addr or v4-mapped addr */ if (addr->sa_family == AF_INET) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); return (EINVAL); } if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); return (EINVAL); } } if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { struct sockaddr_in sin; /* convert v4-mapped into v4 addr and send */ in6_sin6_2_sin(&sin, sin6); return (sctp_sendm(so, flags, m, (struct sockaddr *)&sin, control, p)); } #endif /* INET */ connected_type: /* now what about control */ if (control) { if (inp->control) { SCTP_PRINTF("huh? control set?\n"); SCTP_RELEASE_PKT(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 and MacOSX uses a flag passed */ ((flags & PRUS_MORETOCOME) == 0) ) { /* * note with the current version this code will only be used * by OpenBSD, NetBSD and FreeBSD have methods for * re-defining sosend() to use sctp_sosend(). One can * optionaly switch back to this code (by changing back the * defininitions but this is not advisable. */ int ret; ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags); inp->pkt = NULL; inp->control = NULL; return (ret); } else { return (0); } } static int sctp6_connect(struct socket *so, struct sockaddr *addr, struct thread *p) { uint32_t vrf_id; int error = 0; struct sctp_inpcb *inp; struct sctp_tcb *stcb; #ifdef INET struct in6pcb *inp6; struct sockaddr_in6 *sin6; union sctp_sockstore store; #endif #ifdef INET inp6 = (struct in6pcb *)so->so_pcb; #endif inp = (struct sctp_inpcb *)so->so_pcb; if (inp == NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); return (ECONNRESET); /* I made the same as TCP since we are * not setup? */ } if (addr == NULL) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); return (EINVAL); } switch (addr->sa_family) { #ifdef INET case AF_INET: if (addr->sa_len != sizeof(struct sockaddr_in)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); return (EINVAL); } break; #endif #ifdef INET6 case AF_INET6: if (addr->sa_len != sizeof(struct sockaddr_in6)) { SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); return (EINVAL); } break; #endif default: SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); return (EINVAL); } vrf_id = inp->def_vrf_id; SCTP_ASOC_CREATE_LOCK(inp); SCTP_INP_RLOCK(inp); if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == SCTP_PCB_FLAGS_UNBOUND) { /* Bind a ephemeral port */ SCTP_INP_RUNLOCK(inp); error = sctp6_bind(so, NULL, p); if (error) { SCTP_ASOC_CREATE_UNLOCK(inp); return (error); } SCTP_INP_RLOCK(inp); } 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_ASOC_CREATE_UNLOCK(inp); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EADDRINUSE); return (EADDRINUSE); } #ifdef INET sin6 = (struct sockaddr_in6 *)addr; if (SCTP_IPV6_V6ONLY(inp6)) { /* * if IPV6_V6ONLY flag, ignore connections destined to a v4 * addr or v4-mapped addr */ if (addr->sa_family == AF_INET) { SCTP_INP_RUNLOCK(inp); SCTP_ASOC_CREATE_UNLOCK(inp); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); return (EINVAL); } if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { SCTP_INP_RUNLOCK(inp); SCTP_ASOC_CREATE_UNLOCK(inp); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); return (EINVAL); } } if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { /* convert v4-mapped into v4 addr */ in6_sin6_2_sin(&store.sin, sin6); addr = &store.sa; } #endif /* INET */ /* Now do we connect? */ if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { stcb = LIST_FIRST(&inp->sctp_asoc_list); if (stcb) { SCTP_TCB_UNLOCK(stcb); } SCTP_INP_RUNLOCK(inp); } else { SCTP_INP_RUNLOCK(inp); SCTP_INP_WLOCK(inp); SCTP_INP_INCR_REF(inp); SCTP_INP_WUNLOCK(inp); stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL); if (stcb == NULL) { SCTP_INP_WLOCK(inp); SCTP_INP_DECR_REF(inp); SCTP_INP_WUNLOCK(inp); } } if (stcb != NULL) { /* Already have or am bring up an association */ SCTP_ASOC_CREATE_UNLOCK(inp); SCTP_TCB_UNLOCK(stcb); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EALREADY); return (EALREADY); } /* We are GOOD to go */ stcb = sctp_aloc_assoc(inp, addr, &error, 0, vrf_id, p); SCTP_ASOC_CREATE_UNLOCK(inp); if (stcb == NULL) { /* Gak! no memory */ return (error); } 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); } stcb->asoc.state = 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); return (error); } static int sctp6_getaddr(struct socket *so, struct sockaddr **addr) { struct sockaddr_in6 *sin6; struct sctp_inpcb *inp; uint32_t vrf_id; struct sctp_ifa *sctp_ifa; int error; /* * Do the malloc first in case it blocks. */ SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof(*sin6)); if (sin6 == NULL) return (ENOMEM); sin6->sin6_family = AF_INET6; sin6->sin6_len = sizeof(*sin6); inp = (struct sctp_inpcb *)so->so_pcb; if (inp == NULL) { SCTP_FREE_SONAME(sin6); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); return (ECONNRESET); } SCTP_INP_RLOCK(inp); sin6->sin6_port = inp->sctp_lport; if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { /* For the bound all case you get back 0 */ if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { struct sctp_tcb *stcb; struct sockaddr_in6 *sin_a6; struct sctp_nets *net; int fnd; stcb = LIST_FIRST(&inp->sctp_asoc_list); if (stcb == NULL) { goto notConn6; } fnd = 0; sin_a6 = NULL; TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr; if (sin_a6 == NULL) /* this will make coverity happy */ continue; if (sin_a6->sin6_family == AF_INET6) { fnd = 1; break; } } if ((!fnd) || (sin_a6 == NULL)) { /* punt */ goto notConn6; } 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) { sin6->sin6_addr = sctp_ifa->address.sin6.sin6_addr; } } else { /* For the bound all case you get back 0 */ notConn6: memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr)); } } else { /* Take the first IPv6 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_INET6) { struct sockaddr_in6 *sin_a; sin_a = &laddr->ifa->address.sin6; sin6->sin6_addr = sin_a->sin6_addr; fnd = 1; break; } } if (!fnd) { SCTP_FREE_SONAME(sin6); SCTP_INP_RUNLOCK(inp); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); return (ENOENT); } } SCTP_INP_RUNLOCK(inp); /* Scoping things for v6 */ if ((error = sa6_recoverscope(sin6)) != 0) { SCTP_FREE_SONAME(sin6); return (error); } (*addr) = (struct sockaddr *)sin6; return (0); } static int sctp6_peeraddr(struct socket *so, struct sockaddr **addr) { struct sockaddr_in6 *sin6; int fnd; struct sockaddr_in6 *sin_a6; struct sctp_inpcb *inp; struct sctp_tcb *stcb; struct sctp_nets *net; int error; /* Do the malloc first in case it blocks. */ SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); if (sin6 == NULL) return (ENOMEM); sin6->sin6_family = AF_INET6; sin6->sin6_len = sizeof(*sin6); 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(sin6); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_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(sin6); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); return (ECONNRESET); } fnd = 0; TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr; if (sin_a6->sin6_family == AF_INET6) { fnd = 1; sin6->sin6_port = stcb->rport; sin6->sin6_addr = sin_a6->sin6_addr; break; } } SCTP_TCB_UNLOCK(stcb); if (!fnd) { /* No IPv4 address */ SCTP_FREE_SONAME(sin6); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); return (ENOENT); } if ((error = sa6_recoverscope(sin6)) != 0) { SCTP_FREE_SONAME(sin6); SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, error); return (error); } *addr = (struct sockaddr *)sin6; return (0); } static int sctp6_in6getaddr(struct socket *so, struct sockaddr **nam) { #ifdef INET struct sockaddr *addr; #endif struct in6pcb *inp6 = sotoin6pcb(so); int error; if (inp6 == NULL) { SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); return (EINVAL); } /* allow v6 addresses precedence */ error = sctp6_getaddr(so, nam); #ifdef INET if (error) { /* try v4 next if v6 failed */ error = sctp_ingetaddr(so, nam); if (error) { return (error); } addr = *nam; /* if I'm V6ONLY, convert it to v4-mapped */ if (SCTP_IPV6_V6ONLY(inp6)) { struct sockaddr_in6 sin6; in6_sin_2_v4mapsin6((struct sockaddr_in *)addr, &sin6); memcpy(addr, &sin6, sizeof(struct sockaddr_in6)); } } #endif return (error); } static int sctp6_getpeeraddr(struct socket *so, struct sockaddr **nam) { #ifdef INET struct sockaddr *addr; #endif struct in6pcb *inp6 = sotoin6pcb(so); int error; if (inp6 == NULL) { SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); return (EINVAL); } /* allow v6 addresses precedence */ error = sctp6_peeraddr(so, nam); #ifdef INET if (error) { /* try v4 next if v6 failed */ error = sctp_peeraddr(so, nam); if (error) { return (error); } addr = *nam; /* if I'm V6ONLY, convert it to v4-mapped */ if (SCTP_IPV6_V6ONLY(inp6)) { struct sockaddr_in6 sin6; in6_sin_2_v4mapsin6((struct sockaddr_in *)addr, &sin6); memcpy(addr, &sin6, sizeof(struct sockaddr_in6)); } } #endif return (error); } struct pr_usrreqs sctp6_usrreqs = { .pru_abort = sctp6_abort, .pru_accept = sctp_accept, .pru_attach = sctp6_attach, .pru_bind = sctp6_bind, .pru_connect = sctp6_connect, .pru_control = in6_control, .pru_close = sctp6_close, .pru_detach = sctp6_close, .pru_sopoll = sopoll_generic, .pru_flush = sctp_flush, .pru_disconnect = sctp6_disconnect, .pru_listen = sctp_listen, .pru_peeraddr = sctp6_getpeeraddr, .pru_send = sctp6_send, .pru_shutdown = sctp_shutdown, .pru_sockaddr = sctp6_in6getaddr, .pru_sosend = sctp_sosend, .pru_soreceive = sctp_soreceive }; #endif