Index: head/sys/net/if.h =================================================================== --- head/sys/net/if.h (revision 340967) +++ head/sys/net/if.h (revision 340968) @@ -1,602 +1,606 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1982, 1986, 1989, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. 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. * 3. Neither the name of the University 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 REGENTS 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 REGENTS 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. * * @(#)if.h 8.1 (Berkeley) 6/10/93 * $FreeBSD$ */ #ifndef _NET_IF_H_ #define _NET_IF_H_ #include #if __BSD_VISIBLE /* * does not depend on on most other systems. This * helps userland compatibility. (struct timeval ifi_lastchange) * The same holds for . (struct sockaddr ifru_addr) */ #ifndef _KERNEL #include #include #endif #endif /* * Length of interface external name, including terminating '\0'. * Note: this is the same size as a generic device's external name. */ #define IF_NAMESIZE 16 #if __BSD_VISIBLE #define IFNAMSIZ IF_NAMESIZE #define IF_MAXUNIT 0x7fff /* historical value */ #endif #if __BSD_VISIBLE /* * Structure used to query names of interface cloners. */ struct if_clonereq { int ifcr_total; /* total cloners (out) */ int ifcr_count; /* room for this many in user buffer */ char *ifcr_buffer; /* buffer for cloner names */ }; /* * Structure describing information about an interface * which may be of interest to management entities. */ struct if_data { /* generic interface information */ uint8_t ifi_type; /* ethernet, tokenring, etc */ uint8_t ifi_physical; /* e.g., AUI, Thinnet, 10base-T, etc */ uint8_t ifi_addrlen; /* media address length */ uint8_t ifi_hdrlen; /* media header length */ uint8_t ifi_link_state; /* current link state */ uint8_t ifi_vhid; /* carp vhid */ uint16_t ifi_datalen; /* length of this data struct */ uint32_t ifi_mtu; /* maximum transmission unit */ uint32_t ifi_metric; /* routing metric (external only) */ uint64_t ifi_baudrate; /* linespeed */ /* volatile statistics */ uint64_t ifi_ipackets; /* packets received on interface */ uint64_t ifi_ierrors; /* input errors on interface */ uint64_t ifi_opackets; /* packets sent on interface */ uint64_t ifi_oerrors; /* output errors on interface */ uint64_t ifi_collisions; /* collisions on csma interfaces */ uint64_t ifi_ibytes; /* total number of octets received */ uint64_t ifi_obytes; /* total number of octets sent */ uint64_t ifi_imcasts; /* packets received via multicast */ uint64_t ifi_omcasts; /* packets sent via multicast */ uint64_t ifi_iqdrops; /* dropped on input */ uint64_t ifi_oqdrops; /* dropped on output */ uint64_t ifi_noproto; /* destined for unsupported protocol */ uint64_t ifi_hwassist; /* HW offload capabilities, see IFCAP */ /* Unions are here to make sizes MI. */ union { /* uptime at attach or stat reset */ time_t tt; uint64_t ph; } __ifi_epoch; #define ifi_epoch __ifi_epoch.tt union { /* time of last administrative change */ struct timeval tv; struct { uint64_t ph1; uint64_t ph2; } ph; } __ifi_lastchange; #define ifi_lastchange __ifi_lastchange.tv }; /*- * Interface flags are of two types: network stack owned flags, and driver * owned flags. Historically, these values were stored in the same ifnet * flags field, but with the advent of fine-grained locking, they have been * broken out such that the network stack is responsible for synchronizing * the stack-owned fields, and the device driver the device-owned fields. * Both halves can perform lockless reads of the other half's field, subject * to accepting the involved races. * * Both sets of flags come from the same number space, and should not be * permitted to conflict, as they are exposed to user space via a single * field. * * The following symbols identify read and write requirements for fields: * * (i) if_flags field set by device driver before attach, read-only there * after. * (n) if_flags field written only by the network stack, read by either the * stack or driver. * (d) if_drv_flags field written only by the device driver, read by either * the stack or driver. */ #define IFF_UP 0x1 /* (n) interface is up */ #define IFF_BROADCAST 0x2 /* (i) broadcast address valid */ #define IFF_DEBUG 0x4 /* (n) turn on debugging */ #define IFF_LOOPBACK 0x8 /* (i) is a loopback net */ #define IFF_POINTOPOINT 0x10 /* (i) is a point-to-point link */ /* 0x20 was IFF_SMART */ #define IFF_DRV_RUNNING 0x40 /* (d) resources allocated */ #define IFF_NOARP 0x80 /* (n) no address resolution protocol */ #define IFF_PROMISC 0x100 /* (n) receive all packets */ #define IFF_ALLMULTI 0x200 /* (n) receive all multicast packets */ #define IFF_DRV_OACTIVE 0x400 /* (d) tx hardware queue is full */ #define IFF_SIMPLEX 0x800 /* (i) can't hear own transmissions */ #define IFF_LINK0 0x1000 /* per link layer defined bit */ #define IFF_LINK1 0x2000 /* per link layer defined bit */ #define IFF_LINK2 0x4000 /* per link layer defined bit */ #define IFF_ALTPHYS IFF_LINK2 /* use alternate physical connection */ #define IFF_MULTICAST 0x8000 /* (i) supports multicast */ #define IFF_CANTCONFIG 0x10000 /* (i) unconfigurable using ioctl(2) */ #define IFF_PPROMISC 0x20000 /* (n) user-requested promisc mode */ #define IFF_MONITOR 0x40000 /* (n) user-requested monitor mode */ #define IFF_STATICARP 0x80000 /* (n) static ARP */ #define IFF_DYING 0x200000 /* (n) interface is winding down */ #define IFF_RENAMING 0x400000 /* (n) interface is being renamed */ #define IFF_NOGROUP 0x800000 /* (n) interface is not part of any groups */ /* * Old names for driver flags so that user space tools can continue to use * the old (portable) names. */ #ifndef _KERNEL #define IFF_RUNNING IFF_DRV_RUNNING #define IFF_OACTIVE IFF_DRV_OACTIVE #endif /* flags set internally only: */ #define IFF_CANTCHANGE \ (IFF_BROADCAST|IFF_POINTOPOINT|IFF_DRV_RUNNING|IFF_DRV_OACTIVE|\ IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_PROMISC|\ IFF_DYING|IFF_CANTCONFIG) /* * Values for if_link_state. */ #define LINK_STATE_UNKNOWN 0 /* link invalid/unknown */ #define LINK_STATE_DOWN 1 /* link is down */ #define LINK_STATE_UP 2 /* link is up */ /* * Some convenience macros used for setting ifi_baudrate. * XXX 1000 vs. 1024? --thorpej@netbsd.org */ #define IF_Kbps(x) ((uintmax_t)(x) * 1000) /* kilobits/sec. */ #define IF_Mbps(x) (IF_Kbps((x) * 1000)) /* megabits/sec. */ #define IF_Gbps(x) (IF_Mbps((x) * 1000)) /* gigabits/sec. */ /* * Capabilities that interfaces can advertise. * * struct ifnet.if_capabilities * contains the optional features & capabilities a particular interface * supports (not only the driver but also the detected hw revision). * Capabilities are defined by IFCAP_* below. * struct ifnet.if_capenable * contains the enabled (either by default or through ifconfig) optional * features & capabilities on this interface. * Capabilities are defined by IFCAP_* below. * struct if_data.ifi_hwassist in mbuf CSUM_ flag form, controlled by above * contains the enabled optional feature & capabilites that can be used * individually per packet and are specified in the mbuf pkthdr.csum_flags * field. IFCAP_* and CSUM_* do not match one to one and CSUM_* may be * more detailed or differenciated than IFCAP_*. * Hwassist features are defined CSUM_* in sys/mbuf.h * * Capabilities that cannot be arbitrarily changed with ifconfig/ioctl * are listed in IFCAP_CANTCHANGE, similar to IFF_CANTCHANGE. * This is not strictly necessary because the common code never * changes capabilities, and it is left to the individual driver * to do the right thing. However, having the filter here * avoids replication of the same code in all individual drivers. */ #define IFCAP_RXCSUM 0x00001 /* can offload checksum on RX */ #define IFCAP_TXCSUM 0x00002 /* can offload checksum on TX */ #define IFCAP_NETCONS 0x00004 /* can be a network console */ #define IFCAP_VLAN_MTU 0x00008 /* VLAN-compatible MTU */ #define IFCAP_VLAN_HWTAGGING 0x00010 /* hardware VLAN tag support */ #define IFCAP_JUMBO_MTU 0x00020 /* 9000 byte MTU supported */ #define IFCAP_POLLING 0x00040 /* driver supports polling */ #define IFCAP_VLAN_HWCSUM 0x00080 /* can do IFCAP_HWCSUM on VLANs */ #define IFCAP_TSO4 0x00100 /* can do TCP Segmentation Offload */ #define IFCAP_TSO6 0x00200 /* can do TCP6 Segmentation Offload */ #define IFCAP_LRO 0x00400 /* can do Large Receive Offload */ #define IFCAP_WOL_UCAST 0x00800 /* wake on any unicast frame */ #define IFCAP_WOL_MCAST 0x01000 /* wake on any multicast frame */ #define IFCAP_WOL_MAGIC 0x02000 /* wake on any Magic Packet */ #define IFCAP_TOE4 0x04000 /* interface can offload TCP */ #define IFCAP_TOE6 0x08000 /* interface can offload TCP6 */ #define IFCAP_VLAN_HWFILTER 0x10000 /* interface hw can filter vlan tag */ /* available 0x20000 */ #define IFCAP_VLAN_HWTSO 0x40000 /* can do IFCAP_TSO on VLANs */ #define IFCAP_LINKSTATE 0x80000 /* the runtime link state is dynamic */ #define IFCAP_NETMAP 0x100000 /* netmap mode supported/enabled */ #define IFCAP_RXCSUM_IPV6 0x200000 /* can offload checksum on IPv6 RX */ #define IFCAP_TXCSUM_IPV6 0x400000 /* can offload checksum on IPv6 TX */ #define IFCAP_HWSTATS 0x800000 /* manages counters internally */ #define IFCAP_TXRTLMT 0x1000000 /* hardware supports TX rate limiting */ #define IFCAP_HWRXTSTMP 0x2000000 /* hardware rx timestamping */ #define IFCAP_HWCSUM_IPV6 (IFCAP_RXCSUM_IPV6 | IFCAP_TXCSUM_IPV6) #define IFCAP_HWCSUM (IFCAP_RXCSUM | IFCAP_TXCSUM) #define IFCAP_TSO (IFCAP_TSO4 | IFCAP_TSO6) #define IFCAP_WOL (IFCAP_WOL_UCAST | IFCAP_WOL_MCAST | IFCAP_WOL_MAGIC) #define IFCAP_TOE (IFCAP_TOE4 | IFCAP_TOE6) #define IFCAP_CANTCHANGE (IFCAP_NETMAP) #define IFQ_MAXLEN 50 #define IFNET_SLOWHZ 1 /* granularity is 1 second */ /* * Message format for use in obtaining information about interfaces * from getkerninfo and the routing socket * For the new, extensible interface see struct if_msghdrl below. */ struct if_msghdr { u_short ifm_msglen; /* to skip over non-understood messages */ u_char ifm_version; /* future binary compatibility */ u_char ifm_type; /* message type */ int ifm_addrs; /* like rtm_addrs */ int ifm_flags; /* value of if_flags */ u_short ifm_index; /* index for associated ifp */ + u_short _ifm_spare1; struct if_data ifm_data;/* statistics and other data about if */ }; /* * The 'l' version shall be used by new interfaces, like NET_RT_IFLISTL. It is * extensible after ifm_data_off or within ifm_data. Both the if_msghdr and * if_data now have a member field detailing the struct length in addition to * the routing message length. Macros are provided to find the start of * ifm_data and the start of the socket address strucutres immediately following * struct if_msghdrl given a pointer to struct if_msghdrl. */ #define IF_MSGHDRL_IFM_DATA(_l) \ (struct if_data *)((char *)(_l) + (_l)->ifm_data_off) #define IF_MSGHDRL_RTA(_l) \ (void *)((uintptr_t)(_l) + (_l)->ifm_len) struct if_msghdrl { u_short ifm_msglen; /* to skip over non-understood messages */ u_char ifm_version; /* future binary compatibility */ u_char ifm_type; /* message type */ int ifm_addrs; /* like rtm_addrs */ int ifm_flags; /* value of if_flags */ u_short ifm_index; /* index for associated ifp */ u_short _ifm_spare1; /* spare space to grow if_index, see if_var.h */ u_short ifm_len; /* length of if_msghdrl incl. if_data */ u_short ifm_data_off; /* offset of if_data from beginning */ + int _ifm_spare2; struct if_data ifm_data;/* statistics and other data about if */ }; /* * Message format for use in obtaining information about interface addresses * from getkerninfo and the routing socket * For the new, extensible interface see struct ifa_msghdrl below. */ struct ifa_msghdr { u_short ifam_msglen; /* to skip over non-understood messages */ u_char ifam_version; /* future binary compatibility */ u_char ifam_type; /* message type */ int ifam_addrs; /* like rtm_addrs */ int ifam_flags; /* value of ifa_flags */ u_short ifam_index; /* index for associated ifp */ + u_short _ifam_spare1; int ifam_metric; /* value of ifa_ifp->if_metric */ }; /* * The 'l' version shall be used by new interfaces, like NET_RT_IFLISTL. It is * extensible after ifam_metric or within ifam_data. Both the ifa_msghdrl and * if_data now have a member field detailing the struct length in addition to * the routing message length. Macros are provided to find the start of * ifm_data and the start of the socket address strucutres immediately following * struct ifa_msghdrl given a pointer to struct ifa_msghdrl. */ #define IFA_MSGHDRL_IFAM_DATA(_l) \ (struct if_data *)((char *)(_l) + (_l)->ifam_data_off) #define IFA_MSGHDRL_RTA(_l) \ (void *)((uintptr_t)(_l) + (_l)->ifam_len) struct ifa_msghdrl { u_short ifam_msglen; /* to skip over non-understood messages */ u_char ifam_version; /* future binary compatibility */ u_char ifam_type; /* message type */ int ifam_addrs; /* like rtm_addrs */ int ifam_flags; /* value of ifa_flags */ u_short ifam_index; /* index for associated ifp */ u_short _ifam_spare1; /* spare space to grow if_index, see if_var.h */ u_short ifam_len; /* length of ifa_msghdrl incl. if_data */ u_short ifam_data_off; /* offset of if_data from beginning */ int ifam_metric; /* value of ifa_ifp->if_metric */ struct if_data ifam_data;/* statistics and other data about if or * address */ }; /* * Message format for use in obtaining information about multicast addresses * from the routing socket */ struct ifma_msghdr { u_short ifmam_msglen; /* to skip over non-understood messages */ u_char ifmam_version; /* future binary compatibility */ u_char ifmam_type; /* message type */ int ifmam_addrs; /* like rtm_addrs */ int ifmam_flags; /* value of ifa_flags */ u_short ifmam_index; /* index for associated ifp */ + u_short _ifmam_spare1; }; /* * Message format announcing the arrival or departure of a network interface. */ struct if_announcemsghdr { u_short ifan_msglen; /* to skip over non-understood messages */ u_char ifan_version; /* future binary compatibility */ u_char ifan_type; /* message type */ u_short ifan_index; /* index for associated ifp */ char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */ u_short ifan_what; /* what type of announcement */ }; #define IFAN_ARRIVAL 0 /* interface arrival */ #define IFAN_DEPARTURE 1 /* interface departure */ /* * Buffer with length to be used in SIOCGIFDESCR/SIOCSIFDESCR requests */ struct ifreq_buffer { size_t length; void *buffer; }; /* * Interface request structure used for socket * ioctl's. All interface ioctl's must have parameter * definitions which begin with ifr_name. The * remainder may be interface specific. */ struct ifreq { char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ union { struct sockaddr ifru_addr; struct sockaddr ifru_dstaddr; struct sockaddr ifru_broadaddr; struct ifreq_buffer ifru_buffer; short ifru_flags[2]; short ifru_index; int ifru_jid; int ifru_metric; int ifru_mtu; int ifru_phys; int ifru_media; caddr_t ifru_data; int ifru_cap[2]; u_int ifru_fib; u_char ifru_vlan_pcp; } ifr_ifru; #define ifr_addr ifr_ifru.ifru_addr /* address */ #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */ #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ #ifndef _KERNEL #define ifr_buffer ifr_ifru.ifru_buffer /* user supplied buffer with its length */ #endif #define ifr_flags ifr_ifru.ifru_flags[0] /* flags (low 16 bits) */ #define ifr_flagshigh ifr_ifru.ifru_flags[1] /* flags (high 16 bits) */ #define ifr_jid ifr_ifru.ifru_jid /* jail/vnet */ #define ifr_metric ifr_ifru.ifru_metric /* metric */ #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */ #define ifr_phys ifr_ifru.ifru_phys /* physical wire */ #define ifr_media ifr_ifru.ifru_media /* physical media */ #ifndef _KERNEL #define ifr_data ifr_ifru.ifru_data /* for use by interface */ #endif #define ifr_reqcap ifr_ifru.ifru_cap[0] /* requested capabilities */ #define ifr_curcap ifr_ifru.ifru_cap[1] /* current capabilities */ #define ifr_index ifr_ifru.ifru_index /* interface index */ #define ifr_fib ifr_ifru.ifru_fib /* interface fib */ #define ifr_vlan_pcp ifr_ifru.ifru_vlan_pcp /* VLAN priority */ #define ifr_lan_pcp ifr_ifru.ifru_vlan_pcp /* VLAN priority */ }; #define _SIZEOF_ADDR_IFREQ(ifr) \ ((ifr).ifr_addr.sa_len > sizeof(struct sockaddr) ? \ (sizeof(struct ifreq) - sizeof(struct sockaddr) + \ (ifr).ifr_addr.sa_len) : sizeof(struct ifreq)) struct ifaliasreq { char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ struct sockaddr ifra_addr; struct sockaddr ifra_broadaddr; struct sockaddr ifra_mask; int ifra_vhid; }; /* 9.x compat */ struct oifaliasreq { char ifra_name[IFNAMSIZ]; struct sockaddr ifra_addr; struct sockaddr ifra_broadaddr; struct sockaddr ifra_mask; }; struct ifmediareq { char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ int ifm_current; /* current media options */ int ifm_mask; /* don't care mask */ int ifm_status; /* media status */ int ifm_active; /* active options */ int ifm_count; /* # entries in ifm_ulist array */ int *ifm_ulist; /* media words */ }; struct ifdrv { char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */ unsigned long ifd_cmd; size_t ifd_len; void *ifd_data; }; /* * Structure used to retrieve aux status data from interfaces. * Kernel suppliers to this interface should respect the formatting * needed by ifconfig(8): each line starts with a TAB and ends with * a newline. The canonical example to copy and paste is in if_tun.c. */ #define IFSTATMAX 800 /* 10 lines of text */ struct ifstat { char ifs_name[IFNAMSIZ]; /* if name, e.g. "en0" */ char ascii[IFSTATMAX + 1]; }; /* * Structure used in SIOCGIFCONF request. * Used to retrieve interface configuration * for machine (useful for programs which * must know all networks accessible). */ struct ifconf { int ifc_len; /* size of associated buffer */ union { caddr_t ifcu_buf; struct ifreq *ifcu_req; } ifc_ifcu; #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ }; /* * interface groups */ #define IFG_ALL "all" /* group contains all interfaces */ /* XXX: will we implement this? */ #define IFG_EGRESS "egress" /* if(s) default route(s) point to */ struct ifg_req { union { char ifgrqu_group[IFNAMSIZ]; char ifgrqu_member[IFNAMSIZ]; } ifgrq_ifgrqu; #define ifgrq_group ifgrq_ifgrqu.ifgrqu_group #define ifgrq_member ifgrq_ifgrqu.ifgrqu_member }; /* * Used to lookup groups for an interface */ struct ifgroupreq { char ifgr_name[IFNAMSIZ]; u_int ifgr_len; union { char ifgru_group[IFNAMSIZ]; struct ifg_req *ifgru_groups; } ifgr_ifgru; #ifndef _KERNEL #define ifgr_group ifgr_ifgru.ifgru_group #define ifgr_groups ifgr_ifgru.ifgru_groups #endif }; /* * Structure used to request i2c data * from interface transceivers. */ struct ifi2creq { uint8_t dev_addr; /* i2c address (0xA0, 0xA2) */ uint8_t offset; /* read offset */ uint8_t len; /* read length */ uint8_t spare0; uint32_t spare1; uint8_t data[8]; /* read buffer */ }; /* * RSS hash. */ #define RSS_FUNC_NONE 0 /* RSS disabled */ #define RSS_FUNC_PRIVATE 1 /* non-standard */ #define RSS_FUNC_TOEPLITZ 2 #define RSS_TYPE_IPV4 0x00000001 #define RSS_TYPE_TCP_IPV4 0x00000002 #define RSS_TYPE_IPV6 0x00000004 #define RSS_TYPE_IPV6_EX 0x00000008 #define RSS_TYPE_TCP_IPV6 0x00000010 #define RSS_TYPE_TCP_IPV6_EX 0x00000020 #define RSS_TYPE_UDP_IPV4 0x00000040 #define RSS_TYPE_UDP_IPV6 0x00000080 #define RSS_TYPE_UDP_IPV6_EX 0x00000100 #define RSS_KEYLEN 128 struct ifrsskey { char ifrk_name[IFNAMSIZ]; /* if name, e.g. "en0" */ uint8_t ifrk_func; /* RSS_FUNC_ */ uint8_t ifrk_spare0; uint16_t ifrk_keylen; uint8_t ifrk_key[RSS_KEYLEN]; }; struct ifrsshash { char ifrh_name[IFNAMSIZ]; /* if name, e.g. "en0" */ uint8_t ifrh_func; /* RSS_FUNC_ */ uint8_t ifrh_spare0; uint16_t ifrh_spare1; uint32_t ifrh_types; /* RSS_TYPE_ */ }; #define IFNET_PCP_NONE 0xff /* PCP disabled */ #endif /* __BSD_VISIBLE */ #ifdef _KERNEL #ifdef MALLOC_DECLARE MALLOC_DECLARE(M_IFADDR); MALLOC_DECLARE(M_IFMADDR); #endif #endif #ifndef _KERNEL struct if_nameindex { unsigned int if_index; /* 1, 2, ... */ char *if_name; /* null terminated name: "le0", ... */ }; __BEGIN_DECLS void if_freenameindex(struct if_nameindex *); char *if_indextoname(unsigned int, char *); struct if_nameindex *if_nameindex(void); unsigned int if_nametoindex(const char *); __END_DECLS #endif #endif /* !_NET_IF_H_ */ Index: head/sys/net/route.h =================================================================== --- head/sys/net/route.h (revision 340967) +++ head/sys/net/route.h (revision 340968) @@ -1,504 +1,505 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1980, 1986, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. 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. * 3. Neither the name of the University 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 REGENTS 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 REGENTS 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. * * @(#)route.h 8.4 (Berkeley) 1/9/95 * $FreeBSD$ */ #ifndef _NET_ROUTE_H_ #define _NET_ROUTE_H_ #include #include /* * Kernel resident routing tables. * * The routing tables are initialized when interface addresses * are set by making entries for all directly connected interfaces. */ /* * Struct route consiste of a destination address, * a route entry pointer, link-layer prepend data pointer along * with its length. */ struct route { struct rtentry *ro_rt; struct llentry *ro_lle; /* * ro_prepend and ro_plen are only used for bpf to pass in a * preformed header. They are not cacheable. */ char *ro_prepend; uint16_t ro_plen; uint16_t ro_flags; uint16_t ro_mtu; /* saved ro_rt mtu */ uint16_t spare; struct sockaddr ro_dst; }; #define RT_L2_ME_BIT 2 /* dst L2 addr is our address */ #define RT_MAY_LOOP_BIT 3 /* dst may require loop copy */ #define RT_HAS_HEADER_BIT 4 /* mbuf already have its header prepended */ #define RT_L2_ME (1 << RT_L2_ME_BIT) /* 0x0004 */ #define RT_MAY_LOOP (1 << RT_MAY_LOOP_BIT) /* 0x0008 */ #define RT_HAS_HEADER (1 << RT_HAS_HEADER_BIT) /* 0x0010 */ #define RT_REJECT 0x0020 /* Destination is reject */ #define RT_BLACKHOLE 0x0040 /* Destination is blackhole */ #define RT_HAS_GW 0x0080 /* Destination has GW */ #define RT_LLE_CACHE 0x0100 /* Cache link layer */ struct rt_metrics { u_long rmx_locks; /* Kernel must leave these values alone */ u_long rmx_mtu; /* MTU for this path */ u_long rmx_hopcount; /* max hops expected */ u_long rmx_expire; /* lifetime for route, e.g. redirect */ u_long rmx_recvpipe; /* inbound delay-bandwidth product */ u_long rmx_sendpipe; /* outbound delay-bandwidth product */ u_long rmx_ssthresh; /* outbound gateway buffer limit */ u_long rmx_rtt; /* estimated round trip time */ u_long rmx_rttvar; /* estimated rtt variance */ u_long rmx_pksent; /* packets sent using this route */ u_long rmx_weight; /* route weight */ u_long rmx_filler[3]; /* will be used for T/TCP later */ }; /* * rmx_rtt and rmx_rttvar are stored as microseconds; * RTTTOPRHZ(rtt) converts to a value suitable for use * by a protocol slowtimo counter. */ #define RTM_RTTUNIT 1000000 /* units for rtt, rttvar, as units per sec */ #define RTTTOPRHZ(r) ((r) / (RTM_RTTUNIT / PR_SLOWHZ)) /* lle state is exported in rmx_state rt_metrics field */ #define rmx_state rmx_weight /* * Keep a generation count of routing table, incremented on route addition, * so we can invalidate caches. This is accessed without a lock, as precision * is not required. */ typedef volatile u_int rt_gen_t; /* tree generation (for adds) */ #define RT_GEN(fibnum, af) rt_tables_get_gen(fibnum, af) #define RT_DEFAULT_FIB 0 /* Explicitly mark fib=0 restricted cases */ #define RT_ALL_FIBS -1 /* Announce event for every fib */ #ifdef _KERNEL extern u_int rt_numfibs; /* number of usable routing tables */ VNET_DECLARE(u_int, rt_add_addr_allfibs); /* Announce interfaces to all fibs */ #define V_rt_add_addr_allfibs VNET(rt_add_addr_allfibs) #endif /* * We distinguish between routes to hosts and routes to networks, * preferring the former if available. For each route we infer * the interface to use from the gateway address supplied when * the route was entered. Routes that forward packets through * gateways are marked so that the output routines know to address the * gateway rather than the ultimate destination. */ #ifndef RNF_NORMAL #include #ifdef RADIX_MPATH #include #endif #endif #if defined(_KERNEL) struct rtentry { struct radix_node rt_nodes[2]; /* tree glue, and other values */ /* * XXX struct rtentry must begin with a struct radix_node (or two!) * because the code does some casts of a 'struct radix_node *' * to a 'struct rtentry *' */ #define rt_key(r) (*((struct sockaddr **)(&(r)->rt_nodes->rn_key))) #define rt_mask(r) (*((struct sockaddr **)(&(r)->rt_nodes->rn_mask))) struct sockaddr *rt_gateway; /* value */ struct ifnet *rt_ifp; /* the answer: interface to use */ struct ifaddr *rt_ifa; /* the answer: interface address to use */ int rt_flags; /* up/down?, host/net */ int rt_refcnt; /* # held references */ u_int rt_fibnum; /* which FIB */ u_long rt_mtu; /* MTU for this path */ u_long rt_weight; /* absolute weight */ u_long rt_expire; /* lifetime for route, e.g. redirect */ #define rt_endzero rt_pksent counter_u64_t rt_pksent; /* packets sent using this route */ struct mtx rt_mtx; /* mutex for routing entry */ struct rtentry *rt_chain; /* pointer to next rtentry to delete */ }; #endif /* _KERNEL */ #define RTF_UP 0x1 /* route usable */ #define RTF_GATEWAY 0x2 /* destination is a gateway */ #define RTF_HOST 0x4 /* host entry (net otherwise) */ #define RTF_REJECT 0x8 /* host or net unreachable */ #define RTF_DYNAMIC 0x10 /* created dynamically (by redirect) */ #define RTF_MODIFIED 0x20 /* modified dynamically (by redirect) */ #define RTF_DONE 0x40 /* message confirmed */ /* 0x80 unused, was RTF_DELCLONE */ /* 0x100 unused, was RTF_CLONING */ #define RTF_XRESOLVE 0x200 /* external daemon resolves name */ #define RTF_LLINFO 0x400 /* DEPRECATED - exists ONLY for backward compatibility */ #define RTF_LLDATA 0x400 /* used by apps to add/del L2 entries */ #define RTF_STATIC 0x800 /* manually added */ #define RTF_BLACKHOLE 0x1000 /* just discard pkts (during updates) */ #define RTF_PROTO2 0x4000 /* protocol specific routing flag */ #define RTF_PROTO1 0x8000 /* protocol specific routing flag */ /* 0x10000 unused, was RTF_PRCLONING */ /* 0x20000 unused, was RTF_WASCLONED */ #define RTF_PROTO3 0x40000 /* protocol specific routing flag */ #define RTF_FIXEDMTU 0x80000 /* MTU was explicitly specified */ #define RTF_PINNED 0x100000 /* route is immutable */ #define RTF_LOCAL 0x200000 /* route represents a local address */ #define RTF_BROADCAST 0x400000 /* route represents a bcast address */ #define RTF_MULTICAST 0x800000 /* route represents a mcast address */ /* 0x8000000 and up unassigned */ #define RTF_STICKY 0x10000000 /* always route dst->src */ #define RTF_RNH_LOCKED 0x40000000 /* radix node head is locked */ #define RTF_GWFLAG_COMPAT 0x80000000 /* a compatibility bit for interacting with existing routing apps */ /* Mask of RTF flags that are allowed to be modified by RTM_CHANGE. */ #define RTF_FMASK \ (RTF_PROTO1 | RTF_PROTO2 | RTF_PROTO3 | RTF_BLACKHOLE | \ RTF_REJECT | RTF_STATIC | RTF_STICKY) /* * fib_ nexthop API flags. */ /* Consumer-visible nexthop info flags */ #define NHF_REJECT 0x0010 /* RTF_REJECT */ #define NHF_BLACKHOLE 0x0020 /* RTF_BLACKHOLE */ #define NHF_REDIRECT 0x0040 /* RTF_DYNAMIC|RTF_MODIFIED */ #define NHF_DEFAULT 0x0080 /* Default route */ #define NHF_BROADCAST 0x0100 /* RTF_BROADCAST */ #define NHF_GATEWAY 0x0200 /* RTF_GATEWAY */ /* Nexthop request flags */ #define NHR_IFAIF 0x01 /* Return ifa_ifp interface */ #define NHR_REF 0x02 /* For future use */ /* Control plane route request flags */ #define NHR_COPY 0x100 /* Copy rte data */ #ifdef _KERNEL /* rte<>ro_flags translation */ static inline void rt_update_ro_flags(struct route *ro) { int rt_flags = ro->ro_rt->rt_flags; ro->ro_flags &= ~ (RT_REJECT|RT_BLACKHOLE|RT_HAS_GW); ro->ro_flags |= (rt_flags & RTF_REJECT) ? RT_REJECT : 0; ro->ro_flags |= (rt_flags & RTF_BLACKHOLE) ? RT_BLACKHOLE : 0; ro->ro_flags |= (rt_flags & RTF_GATEWAY) ? RT_HAS_GW : 0; } #endif /* * Routing statistics. */ struct rtstat { short rts_badredirect; /* bogus redirect calls */ short rts_dynamic; /* routes created by redirects */ short rts_newgateway; /* routes modified by redirects */ short rts_unreach; /* lookups which failed */ short rts_wildcard; /* lookups satisfied by a wildcard */ }; /* * Structures for routing messages. */ struct rt_msghdr { u_short rtm_msglen; /* to skip over non-understood messages */ u_char rtm_version; /* future binary compatibility */ u_char rtm_type; /* message type */ u_short rtm_index; /* index for associated ifp */ + u_short _rtm_spare1; int rtm_flags; /* flags, incl. kern & message, e.g. DONE */ int rtm_addrs; /* bitmask identifying sockaddrs in msg */ pid_t rtm_pid; /* identify sender */ int rtm_seq; /* for sender to identify action */ int rtm_errno; /* why failed */ int rtm_fmask; /* bitmask used in RTM_CHANGE message */ u_long rtm_inits; /* which metrics we are initializing */ struct rt_metrics rtm_rmx; /* metrics themselves */ }; #define RTM_VERSION 5 /* Up the ante and ignore older versions */ /* * Message types. * * The format for each message is annotated below using the following * identifiers: * * (1) struct rt_msghdr * (2) struct ifa_msghdr * (3) struct if_msghdr * (4) struct ifma_msghdr * (5) struct if_announcemsghdr * */ #define RTM_ADD 0x1 /* (1) Add Route */ #define RTM_DELETE 0x2 /* (1) Delete Route */ #define RTM_CHANGE 0x3 /* (1) Change Metrics or flags */ #define RTM_GET 0x4 /* (1) Report Metrics */ #define RTM_LOSING 0x5 /* (1) Kernel Suspects Partitioning */ #define RTM_REDIRECT 0x6 /* (1) Told to use different route */ #define RTM_MISS 0x7 /* (1) Lookup failed on this address */ #define RTM_LOCK 0x8 /* (1) fix specified metrics */ /* 0x9 */ /* 0xa */ #define RTM_RESOLVE 0xb /* (1) req to resolve dst to LL addr */ #define RTM_NEWADDR 0xc /* (2) address being added to iface */ #define RTM_DELADDR 0xd /* (2) address being removed from iface */ #define RTM_IFINFO 0xe /* (3) iface going up/down etc. */ #define RTM_NEWMADDR 0xf /* (4) mcast group membership being added to if */ #define RTM_DELMADDR 0x10 /* (4) mcast group membership being deleted */ #define RTM_IFANNOUNCE 0x11 /* (5) iface arrival/departure */ #define RTM_IEEE80211 0x12 /* (5) IEEE80211 wireless event */ /* * Bitmask values for rtm_inits and rmx_locks. */ #define RTV_MTU 0x1 /* init or lock _mtu */ #define RTV_HOPCOUNT 0x2 /* init or lock _hopcount */ #define RTV_EXPIRE 0x4 /* init or lock _expire */ #define RTV_RPIPE 0x8 /* init or lock _recvpipe */ #define RTV_SPIPE 0x10 /* init or lock _sendpipe */ #define RTV_SSTHRESH 0x20 /* init or lock _ssthresh */ #define RTV_RTT 0x40 /* init or lock _rtt */ #define RTV_RTTVAR 0x80 /* init or lock _rttvar */ #define RTV_WEIGHT 0x100 /* init or lock _weight */ /* * Bitmask values for rtm_addrs. */ #define RTA_DST 0x1 /* destination sockaddr present */ #define RTA_GATEWAY 0x2 /* gateway sockaddr present */ #define RTA_NETMASK 0x4 /* netmask sockaddr present */ #define RTA_GENMASK 0x8 /* cloning mask sockaddr present */ #define RTA_IFP 0x10 /* interface name sockaddr present */ #define RTA_IFA 0x20 /* interface addr sockaddr present */ #define RTA_AUTHOR 0x40 /* sockaddr for author of redirect */ #define RTA_BRD 0x80 /* for NEWADDR, broadcast or p-p dest addr */ /* * Index offsets for sockaddr array for alternate internal encoding. */ #define RTAX_DST 0 /* destination sockaddr present */ #define RTAX_GATEWAY 1 /* gateway sockaddr present */ #define RTAX_NETMASK 2 /* netmask sockaddr present */ #define RTAX_GENMASK 3 /* cloning mask sockaddr present */ #define RTAX_IFP 4 /* interface name sockaddr present */ #define RTAX_IFA 5 /* interface addr sockaddr present */ #define RTAX_AUTHOR 6 /* sockaddr for author of redirect */ #define RTAX_BRD 7 /* for NEWADDR, broadcast or p-p dest addr */ #define RTAX_MAX 8 /* size of array to allocate */ typedef int rt_filter_f_t(const struct rtentry *, void *); struct rt_addrinfo { int rti_addrs; /* Route RTF_ flags */ int rti_flags; /* Route RTF_ flags */ struct sockaddr *rti_info[RTAX_MAX]; /* Sockaddr data */ struct ifaddr *rti_ifa; /* value of rt_ifa addr */ struct ifnet *rti_ifp; /* route interface */ rt_filter_f_t *rti_filter; /* filter function */ void *rti_filterdata; /* filter paramenters */ u_long rti_mflags; /* metrics RTV_ flags */ u_long rti_spare; /* Will be used for fib */ struct rt_metrics *rti_rmx; /* Pointer to route metrics */ }; /* * This macro returns the size of a struct sockaddr when passed * through a routing socket. Basically we round up sa_len to * a multiple of sizeof(long), with a minimum of sizeof(long). * The case sa_len == 0 should only apply to empty structures. */ #define SA_SIZE(sa) \ ( (((struct sockaddr *)(sa))->sa_len == 0) ? \ sizeof(long) : \ 1 + ( (((struct sockaddr *)(sa))->sa_len - 1) | (sizeof(long) - 1) ) ) #define sa_equal(a, b) ( \ (((const struct sockaddr *)(a))->sa_len == ((const struct sockaddr *)(b))->sa_len) && \ (bcmp((a), (b), ((const struct sockaddr *)(b))->sa_len) == 0)) #ifdef _KERNEL #define RT_LINK_IS_UP(ifp) (!((ifp)->if_capabilities & IFCAP_LINKSTATE) \ || (ifp)->if_link_state == LINK_STATE_UP) #define RT_LOCK_INIT(_rt) \ mtx_init(&(_rt)->rt_mtx, "rtentry", NULL, MTX_DEF | MTX_DUPOK | MTX_NEW) #define RT_LOCK(_rt) mtx_lock(&(_rt)->rt_mtx) #define RT_UNLOCK(_rt) mtx_unlock(&(_rt)->rt_mtx) #define RT_LOCK_DESTROY(_rt) mtx_destroy(&(_rt)->rt_mtx) #define RT_LOCK_ASSERT(_rt) mtx_assert(&(_rt)->rt_mtx, MA_OWNED) #define RT_UNLOCK_COND(_rt) do { \ if (mtx_owned(&(_rt)->rt_mtx)) \ mtx_unlock(&(_rt)->rt_mtx); \ } while (0) #define RT_ADDREF(_rt) do { \ RT_LOCK_ASSERT(_rt); \ KASSERT((_rt)->rt_refcnt >= 0, \ ("negative refcnt %d", (_rt)->rt_refcnt)); \ (_rt)->rt_refcnt++; \ } while (0) #define RT_REMREF(_rt) do { \ RT_LOCK_ASSERT(_rt); \ KASSERT((_rt)->rt_refcnt > 0, \ ("bogus refcnt %d", (_rt)->rt_refcnt)); \ (_rt)->rt_refcnt--; \ } while (0) #define RTFREE_LOCKED(_rt) do { \ if ((_rt)->rt_refcnt <= 1) \ rtfree(_rt); \ else { \ RT_REMREF(_rt); \ RT_UNLOCK(_rt); \ } \ /* guard against invalid refs */ \ _rt = 0; \ } while (0) #define RTFREE(_rt) do { \ RT_LOCK(_rt); \ RTFREE_LOCKED(_rt); \ } while (0) #define RO_RTFREE(_ro) do { \ if ((_ro)->ro_rt) \ RTFREE((_ro)->ro_rt); \ } while (0) #define RO_INVALIDATE_CACHE(ro) do { \ RO_RTFREE(ro); \ if ((ro)->ro_lle != NULL) { \ LLE_FREE((ro)->ro_lle); \ (ro)->ro_lle = NULL; \ } \ } while (0) /* * Validate a cached route based on a supplied cookie. If there is an * out-of-date cache, simply free it. Update the generation number * for the new allocation */ #define RT_VALIDATE(ro, cookiep, fibnum) do { \ rt_gen_t cookie = RT_GEN(fibnum, (ro)->ro_dst.sa_family); \ if (*(cookiep) != cookie) { \ RO_INVALIDATE_CACHE(ro); \ *(cookiep) = cookie; \ } \ } while (0) struct ifmultiaddr; struct rib_head; void rt_ieee80211msg(struct ifnet *, int, void *, size_t); void rt_ifannouncemsg(struct ifnet *, int); void rt_ifmsg(struct ifnet *); void rt_missmsg(int, struct rt_addrinfo *, int, int); void rt_missmsg_fib(int, struct rt_addrinfo *, int, int, int); void rt_newaddrmsg(int, struct ifaddr *, int, struct rtentry *); void rt_newaddrmsg_fib(int, struct ifaddr *, int, struct rtentry *, int); int rt_addrmsg(int, struct ifaddr *, int); int rt_routemsg(int, struct ifnet *ifp, int, struct rtentry *, int); void rt_newmaddrmsg(int, struct ifmultiaddr *); int rt_setgate(struct rtentry *, struct sockaddr *, struct sockaddr *); void rt_maskedcopy(struct sockaddr *, struct sockaddr *, struct sockaddr *); struct rib_head *rt_table_init(int); void rt_table_destroy(struct rib_head *); u_int rt_tables_get_gen(int table, int fam); int rtsock_addrmsg(int, struct ifaddr *, int); int rtsock_routemsg(int, struct ifnet *ifp, int, struct rtentry *, int); /* * Note the following locking behavior: * * rtalloc1() returns a locked rtentry * * rtfree() and RTFREE_LOCKED() require a locked rtentry * * RTFREE() uses an unlocked entry. */ void rtfree(struct rtentry *); void rt_updatemtu(struct ifnet *); typedef int rt_walktree_f_t(struct rtentry *, void *); typedef void rt_setwarg_t(struct rib_head *, uint32_t, int, void *); void rt_foreach_fib_walk(int af, rt_setwarg_t *, rt_walktree_f_t *, void *); void rt_foreach_fib_walk_del(int af, rt_filter_f_t *filter_f, void *arg); void rt_flushifroutes_af(struct ifnet *, int); void rt_flushifroutes(struct ifnet *ifp); /* XXX MRT COMPAT VERSIONS THAT SET UNIVERSE to 0 */ /* Thes are used by old code not yet converted to use multiple FIBS */ struct rtentry *rtalloc1(struct sockaddr *, int, u_long); int rtinit(struct ifaddr *, int, int); /* XXX MRT NEW VERSIONS THAT USE FIBs * For now the protocol indepedent versions are the same as the AF_INET ones * but this will change.. */ int rt_getifa_fib(struct rt_addrinfo *, u_int fibnum); void rtalloc_ign_fib(struct route *ro, u_long ignflags, u_int fibnum); struct rtentry *rtalloc1_fib(struct sockaddr *, int, u_long, u_int); int rtioctl_fib(u_long, caddr_t, u_int); void rtredirect_fib(struct sockaddr *, struct sockaddr *, struct sockaddr *, int, struct sockaddr *, u_int); int rtrequest_fib(int, struct sockaddr *, struct sockaddr *, struct sockaddr *, int, struct rtentry **, u_int); int rtrequest1_fib(int, struct rt_addrinfo *, struct rtentry **, u_int); int rib_lookup_info(uint32_t, const struct sockaddr *, uint32_t, uint32_t, struct rt_addrinfo *); void rib_free_info(struct rt_addrinfo *info); #endif #endif Index: head/sys/net/rtsock.c =================================================================== --- head/sys/net/rtsock.c (revision 340967) +++ head/sys/net/rtsock.c (revision 340968) @@ -1,1974 +1,1986 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1988, 1991, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. 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. * 3. Neither the name of the University 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 REGENTS 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 REGENTS 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. * * @(#)rtsock.c 8.7 (Berkeley) 10/12/95 * $FreeBSD$ */ #include "opt_mpath.h" #include "opt_inet.h" #include "opt_inet6.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 #ifdef INET6 #include #include #endif #ifdef COMPAT_FREEBSD32 #include #include struct if_msghdr32 { uint16_t ifm_msglen; uint8_t ifm_version; uint8_t ifm_type; int32_t ifm_addrs; int32_t ifm_flags; uint16_t ifm_index; + uint16_t _ifm_spare1; struct if_data ifm_data; }; struct if_msghdrl32 { uint16_t ifm_msglen; uint8_t ifm_version; uint8_t ifm_type; int32_t ifm_addrs; int32_t ifm_flags; uint16_t ifm_index; uint16_t _ifm_spare1; uint16_t ifm_len; uint16_t ifm_data_off; + uint32_t _ifm_spare2; struct if_data ifm_data; }; struct ifa_msghdrl32 { uint16_t ifam_msglen; uint8_t ifam_version; uint8_t ifam_type; int32_t ifam_addrs; int32_t ifam_flags; uint16_t ifam_index; uint16_t _ifam_spare1; uint16_t ifam_len; uint16_t ifam_data_off; int32_t ifam_metric; struct if_data ifam_data; }; #define SA_SIZE32(sa) \ ( (((struct sockaddr *)(sa))->sa_len == 0) ? \ sizeof(int) : \ 1 + ( (((struct sockaddr *)(sa))->sa_len - 1) | (sizeof(int) - 1) ) ) #endif /* COMPAT_FREEBSD32 */ MALLOC_DEFINE(M_RTABLE, "routetbl", "routing tables"); /* NB: these are not modified */ static struct sockaddr route_src = { 2, PF_ROUTE, }; static struct sockaddr sa_zero = { sizeof(sa_zero), AF_INET, }; /* These are external hooks for CARP. */ int (*carp_get_vhid_p)(struct ifaddr *); /* * Used by rtsock/raw_input callback code to decide whether to filter the update * notification to a socket bound to a particular FIB. */ #define RTS_FILTER_FIB M_PROTO8 typedef struct { int ip_count; /* attached w/ AF_INET */ int ip6_count; /* attached w/ AF_INET6 */ int any_count; /* total attached */ } route_cb_t; VNET_DEFINE_STATIC(route_cb_t, route_cb); #define V_route_cb VNET(route_cb) struct mtx rtsock_mtx; MTX_SYSINIT(rtsock, &rtsock_mtx, "rtsock route_cb lock", MTX_DEF); #define RTSOCK_LOCK() mtx_lock(&rtsock_mtx) #define RTSOCK_UNLOCK() mtx_unlock(&rtsock_mtx) #define RTSOCK_LOCK_ASSERT() mtx_assert(&rtsock_mtx, MA_OWNED) static SYSCTL_NODE(_net, OID_AUTO, route, CTLFLAG_RD, 0, ""); struct walkarg { int w_tmemsize; int w_op, w_arg; caddr_t w_tmem; struct sysctl_req *w_req; }; static void rts_input(struct mbuf *m); static struct mbuf *rtsock_msg_mbuf(int type, struct rt_addrinfo *rtinfo); static int rtsock_msg_buffer(int type, struct rt_addrinfo *rtinfo, struct walkarg *w, int *plen); static int rt_xaddrs(caddr_t cp, caddr_t cplim, struct rt_addrinfo *rtinfo); static int sysctl_dumpentry(struct radix_node *rn, void *vw); static int sysctl_iflist(int af, struct walkarg *w); static int sysctl_ifmalist(int af, struct walkarg *w); static int route_output(struct mbuf *m, struct socket *so, ...); static void rt_getmetrics(const struct rtentry *rt, struct rt_metrics *out); static void rt_dispatch(struct mbuf *, sa_family_t); static struct sockaddr *rtsock_fix_netmask(struct sockaddr *dst, struct sockaddr *smask, struct sockaddr_storage *dmask); static struct netisr_handler rtsock_nh = { .nh_name = "rtsock", .nh_handler = rts_input, .nh_proto = NETISR_ROUTE, .nh_policy = NETISR_POLICY_SOURCE, }; static int sysctl_route_netisr_maxqlen(SYSCTL_HANDLER_ARGS) { int error, qlimit; netisr_getqlimit(&rtsock_nh, &qlimit); error = sysctl_handle_int(oidp, &qlimit, 0, req); if (error || !req->newptr) return (error); if (qlimit < 1) return (EINVAL); return (netisr_setqlimit(&rtsock_nh, qlimit)); } SYSCTL_PROC(_net_route, OID_AUTO, netisr_maxqlen, CTLTYPE_INT|CTLFLAG_RW, 0, 0, sysctl_route_netisr_maxqlen, "I", "maximum routing socket dispatch queue length"); static void vnet_rts_init(void) { int tmp; if (IS_DEFAULT_VNET(curvnet)) { if (TUNABLE_INT_FETCH("net.route.netisr_maxqlen", &tmp)) rtsock_nh.nh_qlimit = tmp; netisr_register(&rtsock_nh); } #ifdef VIMAGE else netisr_register_vnet(&rtsock_nh); #endif } VNET_SYSINIT(vnet_rtsock, SI_SUB_PROTO_DOMAIN, SI_ORDER_THIRD, vnet_rts_init, 0); #ifdef VIMAGE static void vnet_rts_uninit(void) { netisr_unregister_vnet(&rtsock_nh); } VNET_SYSUNINIT(vnet_rts_uninit, SI_SUB_PROTO_DOMAIN, SI_ORDER_THIRD, vnet_rts_uninit, 0); #endif static int raw_input_rts_cb(struct mbuf *m, struct sockproto *proto, struct sockaddr *src, struct rawcb *rp) { int fibnum; KASSERT(m != NULL, ("%s: m is NULL", __func__)); KASSERT(proto != NULL, ("%s: proto is NULL", __func__)); KASSERT(rp != NULL, ("%s: rp is NULL", __func__)); /* No filtering requested. */ if ((m->m_flags & RTS_FILTER_FIB) == 0) return (0); /* Check if it is a rts and the fib matches the one of the socket. */ fibnum = M_GETFIB(m); if (proto->sp_family != PF_ROUTE || rp->rcb_socket == NULL || rp->rcb_socket->so_fibnum == fibnum) return (0); /* Filtering requested and no match, the socket shall be skipped. */ return (1); } static void rts_input(struct mbuf *m) { struct sockproto route_proto; unsigned short *family; struct m_tag *tag; route_proto.sp_family = PF_ROUTE; tag = m_tag_find(m, PACKET_TAG_RTSOCKFAM, NULL); if (tag != NULL) { family = (unsigned short *)(tag + 1); route_proto.sp_protocol = *family; m_tag_delete(m, tag); } else route_proto.sp_protocol = 0; raw_input_ext(m, &route_proto, &route_src, raw_input_rts_cb); } /* * It really doesn't make any sense at all for this code to share much * with raw_usrreq.c, since its functionality is so restricted. XXX */ static void rts_abort(struct socket *so) { raw_usrreqs.pru_abort(so); } static void rts_close(struct socket *so) { raw_usrreqs.pru_close(so); } /* pru_accept is EOPNOTSUPP */ static int rts_attach(struct socket *so, int proto, struct thread *td) { struct rawcb *rp; int error; KASSERT(so->so_pcb == NULL, ("rts_attach: so_pcb != NULL")); /* XXX */ rp = malloc(sizeof *rp, M_PCB, M_WAITOK | M_ZERO); so->so_pcb = (caddr_t)rp; so->so_fibnum = td->td_proc->p_fibnum; error = raw_attach(so, proto); rp = sotorawcb(so); if (error) { so->so_pcb = NULL; free(rp, M_PCB); return error; } RTSOCK_LOCK(); switch(rp->rcb_proto.sp_protocol) { case AF_INET: V_route_cb.ip_count++; break; case AF_INET6: V_route_cb.ip6_count++; break; } V_route_cb.any_count++; RTSOCK_UNLOCK(); soisconnected(so); so->so_options |= SO_USELOOPBACK; return 0; } static int rts_bind(struct socket *so, struct sockaddr *nam, struct thread *td) { return (raw_usrreqs.pru_bind(so, nam, td)); /* xxx just EINVAL */ } static int rts_connect(struct socket *so, struct sockaddr *nam, struct thread *td) { return (raw_usrreqs.pru_connect(so, nam, td)); /* XXX just EINVAL */ } /* pru_connect2 is EOPNOTSUPP */ /* pru_control is EOPNOTSUPP */ static void rts_detach(struct socket *so) { struct rawcb *rp = sotorawcb(so); KASSERT(rp != NULL, ("rts_detach: rp == NULL")); RTSOCK_LOCK(); switch(rp->rcb_proto.sp_protocol) { case AF_INET: V_route_cb.ip_count--; break; case AF_INET6: V_route_cb.ip6_count--; break; } V_route_cb.any_count--; RTSOCK_UNLOCK(); raw_usrreqs.pru_detach(so); } static int rts_disconnect(struct socket *so) { return (raw_usrreqs.pru_disconnect(so)); } /* pru_listen is EOPNOTSUPP */ static int rts_peeraddr(struct socket *so, struct sockaddr **nam) { return (raw_usrreqs.pru_peeraddr(so, nam)); } /* pru_rcvd is EOPNOTSUPP */ /* pru_rcvoob is EOPNOTSUPP */ static int rts_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam, struct mbuf *control, struct thread *td) { return (raw_usrreqs.pru_send(so, flags, m, nam, control, td)); } /* pru_sense is null */ static int rts_shutdown(struct socket *so) { return (raw_usrreqs.pru_shutdown(so)); } static int rts_sockaddr(struct socket *so, struct sockaddr **nam) { return (raw_usrreqs.pru_sockaddr(so, nam)); } static struct pr_usrreqs route_usrreqs = { .pru_abort = rts_abort, .pru_attach = rts_attach, .pru_bind = rts_bind, .pru_connect = rts_connect, .pru_detach = rts_detach, .pru_disconnect = rts_disconnect, .pru_peeraddr = rts_peeraddr, .pru_send = rts_send, .pru_shutdown = rts_shutdown, .pru_sockaddr = rts_sockaddr, .pru_close = rts_close, }; #ifndef _SOCKADDR_UNION_DEFINED #define _SOCKADDR_UNION_DEFINED /* * The union of all possible address formats we handle. */ union sockaddr_union { struct sockaddr sa; struct sockaddr_in sin; struct sockaddr_in6 sin6; }; #endif /* _SOCKADDR_UNION_DEFINED */ static int rtm_get_jailed(struct rt_addrinfo *info, struct ifnet *ifp, struct rtentry *rt, union sockaddr_union *saun, struct ucred *cred) { /* First, see if the returned address is part of the jail. */ if (prison_if(cred, rt->rt_ifa->ifa_addr) == 0) { info->rti_info[RTAX_IFA] = rt->rt_ifa->ifa_addr; return (0); } switch (info->rti_info[RTAX_DST]->sa_family) { #ifdef INET case AF_INET: { struct in_addr ia; struct ifaddr *ifa; int found; found = 0; /* * Try to find an address on the given outgoing interface * that belongs to the jail. */ IF_ADDR_RLOCK(ifp); CK_STAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) { struct sockaddr *sa; sa = ifa->ifa_addr; if (sa->sa_family != AF_INET) continue; ia = ((struct sockaddr_in *)sa)->sin_addr; if (prison_check_ip4(cred, &ia) == 0) { found = 1; break; } } IF_ADDR_RUNLOCK(ifp); if (!found) { /* * As a last resort return the 'default' jail address. */ ia = ((struct sockaddr_in *)rt->rt_ifa->ifa_addr)-> sin_addr; if (prison_get_ip4(cred, &ia) != 0) return (ESRCH); } bzero(&saun->sin, sizeof(struct sockaddr_in)); saun->sin.sin_len = sizeof(struct sockaddr_in); saun->sin.sin_family = AF_INET; saun->sin.sin_addr.s_addr = ia.s_addr; info->rti_info[RTAX_IFA] = (struct sockaddr *)&saun->sin; break; } #endif #ifdef INET6 case AF_INET6: { struct in6_addr ia6; struct ifaddr *ifa; int found; found = 0; /* * Try to find an address on the given outgoing interface * that belongs to the jail. */ IF_ADDR_RLOCK(ifp); CK_STAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) { struct sockaddr *sa; sa = ifa->ifa_addr; if (sa->sa_family != AF_INET6) continue; bcopy(&((struct sockaddr_in6 *)sa)->sin6_addr, &ia6, sizeof(struct in6_addr)); if (prison_check_ip6(cred, &ia6) == 0) { found = 1; break; } } IF_ADDR_RUNLOCK(ifp); if (!found) { /* * As a last resort return the 'default' jail address. */ ia6 = ((struct sockaddr_in6 *)rt->rt_ifa->ifa_addr)-> sin6_addr; if (prison_get_ip6(cred, &ia6) != 0) return (ESRCH); } bzero(&saun->sin6, sizeof(struct sockaddr_in6)); saun->sin6.sin6_len = sizeof(struct sockaddr_in6); saun->sin6.sin6_family = AF_INET6; bcopy(&ia6, &saun->sin6.sin6_addr, sizeof(struct in6_addr)); if (sa6_recoverscope(&saun->sin6) != 0) return (ESRCH); info->rti_info[RTAX_IFA] = (struct sockaddr *)&saun->sin6; break; } #endif default: return (ESRCH); } return (0); } /*ARGSUSED*/ static int route_output(struct mbuf *m, struct socket *so, ...) { RIB_RLOCK_TRACKER; struct rt_msghdr *rtm = NULL; struct rtentry *rt = NULL; struct rib_head *rnh; struct rt_addrinfo info; struct sockaddr_storage ss; #ifdef INET6 struct sockaddr_in6 *sin6; int i, rti_need_deembed = 0; #endif int alloc_len = 0, len, error = 0, fibnum; struct ifnet *ifp = NULL; union sockaddr_union saun; sa_family_t saf = AF_UNSPEC; struct rawcb *rp = NULL; struct walkarg w; fibnum = so->so_fibnum; #define senderr(e) { error = e; goto flush;} if (m == NULL || ((m->m_len < sizeof(long)) && (m = m_pullup(m, sizeof(long))) == NULL)) return (ENOBUFS); if ((m->m_flags & M_PKTHDR) == 0) panic("route_output"); len = m->m_pkthdr.len; if (len < sizeof(*rtm) || len != mtod(m, struct rt_msghdr *)->rtm_msglen) senderr(EINVAL); /* * Most of current messages are in range 200-240 bytes, * minimize possible re-allocation on reply using larger size * buffer aligned on 1k boundaty. */ alloc_len = roundup2(len, 1024); if ((rtm = malloc(alloc_len, M_TEMP, M_NOWAIT)) == NULL) senderr(ENOBUFS); m_copydata(m, 0, len, (caddr_t)rtm); bzero(&info, sizeof(info)); bzero(&w, sizeof(w)); if (rtm->rtm_version != RTM_VERSION) { /* Do not touch message since format is unknown */ free(rtm, M_TEMP); rtm = NULL; senderr(EPROTONOSUPPORT); } /* * Starting from here, it is possible * to alter original message and insert * caller PID and error value. */ rtm->rtm_pid = curproc->p_pid; info.rti_addrs = rtm->rtm_addrs; info.rti_mflags = rtm->rtm_inits; info.rti_rmx = &rtm->rtm_rmx; /* * rt_xaddrs() performs s6_addr[2] := sin6_scope_id for AF_INET6 * link-local address because rtrequest requires addresses with * embedded scope id. */ if (rt_xaddrs((caddr_t)(rtm + 1), len + (caddr_t)rtm, &info)) senderr(EINVAL); info.rti_flags = rtm->rtm_flags; if (info.rti_info[RTAX_DST] == NULL || info.rti_info[RTAX_DST]->sa_family >= AF_MAX || (info.rti_info[RTAX_GATEWAY] != NULL && info.rti_info[RTAX_GATEWAY]->sa_family >= AF_MAX)) senderr(EINVAL); saf = info.rti_info[RTAX_DST]->sa_family; /* * Verify that the caller has the appropriate privilege; RTM_GET * is the only operation the non-superuser is allowed. */ if (rtm->rtm_type != RTM_GET) { error = priv_check(curthread, PRIV_NET_ROUTE); if (error) senderr(error); } /* * The given gateway address may be an interface address. * For example, issuing a "route change" command on a route * entry that was created from a tunnel, and the gateway * address given is the local end point. In this case the * RTF_GATEWAY flag must be cleared or the destination will * not be reachable even though there is no error message. */ if (info.rti_info[RTAX_GATEWAY] != NULL && info.rti_info[RTAX_GATEWAY]->sa_family != AF_LINK) { struct rt_addrinfo ginfo; struct sockaddr *gdst; bzero(&ginfo, sizeof(ginfo)); bzero(&ss, sizeof(ss)); ss.ss_len = sizeof(ss); ginfo.rti_info[RTAX_GATEWAY] = (struct sockaddr *)&ss; gdst = info.rti_info[RTAX_GATEWAY]; /* * A host route through the loopback interface is * installed for each interface adddress. In pre 8.0 * releases the interface address of a PPP link type * is not reachable locally. This behavior is fixed as * part of the new L2/L3 redesign and rewrite work. The * signature of this interface address route is the * AF_LINK sa_family type of the rt_gateway, and the * rt_ifp has the IFF_LOOPBACK flag set. */ if (rib_lookup_info(fibnum, gdst, NHR_REF, 0, &ginfo) == 0) { if (ss.ss_family == AF_LINK && ginfo.rti_ifp->if_flags & IFF_LOOPBACK) { info.rti_flags &= ~RTF_GATEWAY; info.rti_flags |= RTF_GWFLAG_COMPAT; } rib_free_info(&ginfo); } } switch (rtm->rtm_type) { struct rtentry *saved_nrt; case RTM_ADD: case RTM_CHANGE: if (rtm->rtm_type == RTM_ADD) { if (info.rti_info[RTAX_GATEWAY] == NULL) senderr(EINVAL); } saved_nrt = NULL; /* support for new ARP code */ if (info.rti_info[RTAX_GATEWAY] != NULL && info.rti_info[RTAX_GATEWAY]->sa_family == AF_LINK && (rtm->rtm_flags & RTF_LLDATA) != 0) { error = lla_rt_output(rtm, &info); #ifdef INET6 if (error == 0) rti_need_deembed = (V_deembed_scopeid) ? 1 : 0; #endif break; } error = rtrequest1_fib(rtm->rtm_type, &info, &saved_nrt, fibnum); if (error == 0 && saved_nrt != NULL) { #ifdef INET6 rti_need_deembed = (V_deembed_scopeid) ? 1 : 0; #endif RT_LOCK(saved_nrt); rtm->rtm_index = saved_nrt->rt_ifp->if_index; RT_REMREF(saved_nrt); RT_UNLOCK(saved_nrt); } break; case RTM_DELETE: saved_nrt = NULL; /* support for new ARP code */ if (info.rti_info[RTAX_GATEWAY] && (info.rti_info[RTAX_GATEWAY]->sa_family == AF_LINK) && (rtm->rtm_flags & RTF_LLDATA) != 0) { error = lla_rt_output(rtm, &info); #ifdef INET6 if (error == 0) rti_need_deembed = (V_deembed_scopeid) ? 1 : 0; #endif break; } error = rtrequest1_fib(RTM_DELETE, &info, &saved_nrt, fibnum); if (error == 0) { RT_LOCK(saved_nrt); rt = saved_nrt; goto report; } #ifdef INET6 /* rt_msg2() will not be used when RTM_DELETE fails. */ rti_need_deembed = (V_deembed_scopeid) ? 1 : 0; #endif break; case RTM_GET: rnh = rt_tables_get_rnh(fibnum, saf); if (rnh == NULL) senderr(EAFNOSUPPORT); RIB_RLOCK(rnh); if (info.rti_info[RTAX_NETMASK] == NULL && rtm->rtm_type == RTM_GET) { /* * Provide longest prefix match for * address lookup (no mask). * 'route -n get addr' */ rt = (struct rtentry *) rnh->rnh_matchaddr( info.rti_info[RTAX_DST], &rnh->head); } else rt = (struct rtentry *) rnh->rnh_lookup( info.rti_info[RTAX_DST], info.rti_info[RTAX_NETMASK], &rnh->head); if (rt == NULL) { RIB_RUNLOCK(rnh); senderr(ESRCH); } #ifdef RADIX_MPATH /* * for RTM_CHANGE/LOCK, if we got multipath routes, * we require users to specify a matching RTAX_GATEWAY. * * for RTM_GET, gate is optional even with multipath. * if gate == NULL the first match is returned. * (no need to call rt_mpath_matchgate if gate == NULL) */ if (rt_mpath_capable(rnh) && (rtm->rtm_type != RTM_GET || info.rti_info[RTAX_GATEWAY])) { rt = rt_mpath_matchgate(rt, info.rti_info[RTAX_GATEWAY]); if (!rt) { RIB_RUNLOCK(rnh); senderr(ESRCH); } } #endif /* * If performing proxied L2 entry insertion, and * the actual PPP host entry is found, perform * another search to retrieve the prefix route of * the local end point of the PPP link. */ if (rtm->rtm_flags & RTF_ANNOUNCE) { struct sockaddr laddr; if (rt->rt_ifp != NULL && rt->rt_ifp->if_type == IFT_PROPVIRTUAL) { struct ifaddr *ifa; NET_EPOCH_ENTER(); ifa = ifa_ifwithnet(info.rti_info[RTAX_DST], 1, RT_ALL_FIBS); if (ifa != NULL) rt_maskedcopy(ifa->ifa_addr, &laddr, ifa->ifa_netmask); NET_EPOCH_EXIT(); } else rt_maskedcopy(rt->rt_ifa->ifa_addr, &laddr, rt->rt_ifa->ifa_netmask); /* * refactor rt and no lock operation necessary */ rt = (struct rtentry *)rnh->rnh_matchaddr(&laddr, &rnh->head); if (rt == NULL) { RIB_RUNLOCK(rnh); senderr(ESRCH); } } RT_LOCK(rt); RT_ADDREF(rt); RIB_RUNLOCK(rnh); report: RT_LOCK_ASSERT(rt); if ((rt->rt_flags & RTF_HOST) == 0 ? jailed_without_vnet(curthread->td_ucred) : prison_if(curthread->td_ucred, rt_key(rt)) != 0) { RT_UNLOCK(rt); senderr(ESRCH); } info.rti_info[RTAX_DST] = rt_key(rt); info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; info.rti_info[RTAX_NETMASK] = rtsock_fix_netmask(rt_key(rt), rt_mask(rt), &ss); info.rti_info[RTAX_GENMASK] = 0; if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) { ifp = rt->rt_ifp; if (ifp) { info.rti_info[RTAX_IFP] = ifp->if_addr->ifa_addr; error = rtm_get_jailed(&info, ifp, rt, &saun, curthread->td_ucred); if (error != 0) { RT_UNLOCK(rt); senderr(error); } if (ifp->if_flags & IFF_POINTOPOINT) info.rti_info[RTAX_BRD] = rt->rt_ifa->ifa_dstaddr; rtm->rtm_index = ifp->if_index; } else { info.rti_info[RTAX_IFP] = NULL; info.rti_info[RTAX_IFA] = NULL; } } else if ((ifp = rt->rt_ifp) != NULL) { rtm->rtm_index = ifp->if_index; } /* Check if we need to realloc storage */ rtsock_msg_buffer(rtm->rtm_type, &info, NULL, &len); if (len > alloc_len) { struct rt_msghdr *new_rtm; new_rtm = malloc(len, M_TEMP, M_NOWAIT); if (new_rtm == NULL) { RT_UNLOCK(rt); senderr(ENOBUFS); } bcopy(rtm, new_rtm, rtm->rtm_msglen); free(rtm, M_TEMP); rtm = new_rtm; alloc_len = len; } w.w_tmem = (caddr_t)rtm; w.w_tmemsize = alloc_len; rtsock_msg_buffer(rtm->rtm_type, &info, &w, &len); if (rt->rt_flags & RTF_GWFLAG_COMPAT) rtm->rtm_flags = RTF_GATEWAY | (rt->rt_flags & ~RTF_GWFLAG_COMPAT); else rtm->rtm_flags = rt->rt_flags; rt_getmetrics(rt, &rtm->rtm_rmx); rtm->rtm_addrs = info.rti_addrs; RT_UNLOCK(rt); break; default: senderr(EOPNOTSUPP); } flush: if (rt != NULL) RTFREE(rt); /* * Check to see if we don't want our own messages. */ if ((so->so_options & SO_USELOOPBACK) == 0) { if (V_route_cb.any_count <= 1) { if (rtm != NULL) free(rtm, M_TEMP); m_freem(m); return (error); } /* There is another listener, so construct message */ rp = sotorawcb(so); } if (rtm != NULL) { #ifdef INET6 if (rti_need_deembed) { /* sin6_scope_id is recovered before sending rtm. */ sin6 = (struct sockaddr_in6 *)&ss; for (i = 0; i < RTAX_MAX; i++) { if (info.rti_info[i] == NULL) continue; if (info.rti_info[i]->sa_family != AF_INET6) continue; bcopy(info.rti_info[i], sin6, sizeof(*sin6)); if (sa6_recoverscope(sin6) == 0) bcopy(sin6, info.rti_info[i], sizeof(*sin6)); } } #endif if (error != 0) rtm->rtm_errno = error; else rtm->rtm_flags |= RTF_DONE; m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm); if (m->m_pkthdr.len < rtm->rtm_msglen) { m_freem(m); m = NULL; } else if (m->m_pkthdr.len > rtm->rtm_msglen) m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len); free(rtm, M_TEMP); } if (m != NULL) { M_SETFIB(m, fibnum); m->m_flags |= RTS_FILTER_FIB; if (rp) { /* * XXX insure we don't get a copy by * invalidating our protocol */ unsigned short family = rp->rcb_proto.sp_family; rp->rcb_proto.sp_family = 0; rt_dispatch(m, saf); rp->rcb_proto.sp_family = family; } else rt_dispatch(m, saf); } return (error); } static void rt_getmetrics(const struct rtentry *rt, struct rt_metrics *out) { bzero(out, sizeof(*out)); out->rmx_mtu = rt->rt_mtu; out->rmx_weight = rt->rt_weight; out->rmx_pksent = counter_u64_fetch(rt->rt_pksent); /* Kernel -> userland timebase conversion. */ out->rmx_expire = rt->rt_expire ? rt->rt_expire - time_uptime + time_second : 0; } /* * Extract the addresses of the passed sockaddrs. * Do a little sanity checking so as to avoid bad memory references. * This data is derived straight from userland. */ static int rt_xaddrs(caddr_t cp, caddr_t cplim, struct rt_addrinfo *rtinfo) { struct sockaddr *sa; int i; for (i = 0; i < RTAX_MAX && cp < cplim; i++) { if ((rtinfo->rti_addrs & (1 << i)) == 0) continue; sa = (struct sockaddr *)cp; /* * It won't fit. */ if (cp + sa->sa_len > cplim) return (EINVAL); /* * there are no more.. quit now * If there are more bits, they are in error. * I've seen this. route(1) can evidently generate these. * This causes kernel to core dump. * for compatibility, If we see this, point to a safe address. */ if (sa->sa_len == 0) { rtinfo->rti_info[i] = &sa_zero; return (0); /* should be EINVAL but for compat */ } /* accept it */ #ifdef INET6 if (sa->sa_family == AF_INET6) sa6_embedscope((struct sockaddr_in6 *)sa, V_ip6_use_defzone); #endif rtinfo->rti_info[i] = sa; cp += SA_SIZE(sa); } return (0); } /* * Fill in @dmask with valid netmask leaving original @smask * intact. Mostly used with radix netmasks. */ static struct sockaddr * rtsock_fix_netmask(struct sockaddr *dst, struct sockaddr *smask, struct sockaddr_storage *dmask) { if (dst == NULL || smask == NULL) return (NULL); memset(dmask, 0, dst->sa_len); memcpy(dmask, smask, smask->sa_len); dmask->ss_len = dst->sa_len; dmask->ss_family = dst->sa_family; return ((struct sockaddr *)dmask); } /* * Writes information related to @rtinfo object to newly-allocated mbuf. * Assumes MCLBYTES is enough to construct any message. * Used for OS notifications of vaious events (if/ifa announces,etc) * * Returns allocated mbuf or NULL on failure. */ static struct mbuf * rtsock_msg_mbuf(int type, struct rt_addrinfo *rtinfo) { struct rt_msghdr *rtm; struct mbuf *m; int i; struct sockaddr *sa; #ifdef INET6 struct sockaddr_storage ss; struct sockaddr_in6 *sin6; #endif int len, dlen; switch (type) { case RTM_DELADDR: case RTM_NEWADDR: len = sizeof(struct ifa_msghdr); break; case RTM_DELMADDR: case RTM_NEWMADDR: len = sizeof(struct ifma_msghdr); break; case RTM_IFINFO: len = sizeof(struct if_msghdr); break; case RTM_IFANNOUNCE: case RTM_IEEE80211: len = sizeof(struct if_announcemsghdr); break; default: len = sizeof(struct rt_msghdr); } /* XXXGL: can we use MJUMPAGESIZE cluster here? */ KASSERT(len <= MCLBYTES, ("%s: message too big", __func__)); if (len > MHLEN) m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); else m = m_gethdr(M_NOWAIT, MT_DATA); if (m == NULL) return (m); m->m_pkthdr.len = m->m_len = len; rtm = mtod(m, struct rt_msghdr *); bzero((caddr_t)rtm, len); for (i = 0; i < RTAX_MAX; i++) { if ((sa = rtinfo->rti_info[i]) == NULL) continue; rtinfo->rti_addrs |= (1 << i); dlen = SA_SIZE(sa); #ifdef INET6 if (V_deembed_scopeid && sa->sa_family == AF_INET6) { sin6 = (struct sockaddr_in6 *)&ss; bcopy(sa, sin6, sizeof(*sin6)); if (sa6_recoverscope(sin6) == 0) sa = (struct sockaddr *)sin6; } #endif m_copyback(m, len, dlen, (caddr_t)sa); len += dlen; } if (m->m_pkthdr.len != len) { m_freem(m); return (NULL); } rtm->rtm_msglen = len; rtm->rtm_version = RTM_VERSION; rtm->rtm_type = type; return (m); } /* * Writes information related to @rtinfo object to preallocated buffer. * Stores needed size in @plen. If @w is NULL, calculates size without * writing. * Used for sysctl dumps and rtsock answers (RTM_DEL/RTM_GET) generation. * * Returns 0 on success. * */ static int rtsock_msg_buffer(int type, struct rt_addrinfo *rtinfo, struct walkarg *w, int *plen) { int i; int len, buflen = 0, dlen; caddr_t cp = NULL; struct rt_msghdr *rtm = NULL; #ifdef INET6 struct sockaddr_storage ss; struct sockaddr_in6 *sin6; #endif #ifdef COMPAT_FREEBSD32 bool compat32 = false; #endif switch (type) { case RTM_DELADDR: case RTM_NEWADDR: if (w != NULL && w->w_op == NET_RT_IFLISTL) { #ifdef COMPAT_FREEBSD32 if (w->w_req->flags & SCTL_MASK32) { len = sizeof(struct ifa_msghdrl32); compat32 = true; } else #endif len = sizeof(struct ifa_msghdrl); } else len = sizeof(struct ifa_msghdr); break; case RTM_IFINFO: #ifdef COMPAT_FREEBSD32 if (w != NULL && w->w_req->flags & SCTL_MASK32) { if (w->w_op == NET_RT_IFLISTL) len = sizeof(struct if_msghdrl32); else len = sizeof(struct if_msghdr32); compat32 = true; break; } #endif if (w != NULL && w->w_op == NET_RT_IFLISTL) len = sizeof(struct if_msghdrl); else len = sizeof(struct if_msghdr); break; case RTM_NEWMADDR: len = sizeof(struct ifma_msghdr); break; default: len = sizeof(struct rt_msghdr); } if (w != NULL) { rtm = (struct rt_msghdr *)w->w_tmem; buflen = w->w_tmemsize - len; cp = (caddr_t)w->w_tmem + len; } rtinfo->rti_addrs = 0; for (i = 0; i < RTAX_MAX; i++) { struct sockaddr *sa; if ((sa = rtinfo->rti_info[i]) == NULL) continue; rtinfo->rti_addrs |= (1 << i); #ifdef COMPAT_FREEBSD32 if (compat32) dlen = SA_SIZE32(sa); else #endif dlen = SA_SIZE(sa); if (cp != NULL && buflen >= dlen) { #ifdef INET6 if (V_deembed_scopeid && sa->sa_family == AF_INET6) { sin6 = (struct sockaddr_in6 *)&ss; bcopy(sa, sin6, sizeof(*sin6)); if (sa6_recoverscope(sin6) == 0) sa = (struct sockaddr *)sin6; } #endif bcopy((caddr_t)sa, cp, (unsigned)dlen); cp += dlen; buflen -= dlen; } else if (cp != NULL) { /* * Buffer too small. Count needed size * and return with error. */ cp = NULL; } len += dlen; } if (cp != NULL) { dlen = ALIGN(len) - len; if (buflen < dlen) cp = NULL; - else + else { + bzero(cp, dlen); + cp += dlen; buflen -= dlen; + } } len = ALIGN(len); if (cp != NULL) { /* fill header iff buffer is large enough */ rtm->rtm_version = RTM_VERSION; rtm->rtm_type = type; rtm->rtm_msglen = len; } *plen = len; if (w != NULL && cp == NULL) return (ENOBUFS); return (0); } /* * This routine is called to generate a message from the routing * socket indicating that a redirect has occurred, a routing lookup * has failed, or that a protocol has detected timeouts to a particular * destination. */ void rt_missmsg_fib(int type, struct rt_addrinfo *rtinfo, int flags, int error, int fibnum) { struct rt_msghdr *rtm; struct mbuf *m; struct sockaddr *sa = rtinfo->rti_info[RTAX_DST]; if (V_route_cb.any_count == 0) return; m = rtsock_msg_mbuf(type, rtinfo); if (m == NULL) return; if (fibnum != RT_ALL_FIBS) { KASSERT(fibnum >= 0 && fibnum < rt_numfibs, ("%s: fibnum out " "of range 0 <= %d < %d", __func__, fibnum, rt_numfibs)); M_SETFIB(m, fibnum); m->m_flags |= RTS_FILTER_FIB; } rtm = mtod(m, struct rt_msghdr *); rtm->rtm_flags = RTF_DONE | flags; rtm->rtm_errno = error; rtm->rtm_addrs = rtinfo->rti_addrs; rt_dispatch(m, sa ? sa->sa_family : AF_UNSPEC); } void rt_missmsg(int type, struct rt_addrinfo *rtinfo, int flags, int error) { rt_missmsg_fib(type, rtinfo, flags, error, RT_ALL_FIBS); } /* * This routine is called to generate a message from the routing * socket indicating that the status of a network interface has changed. */ void rt_ifmsg(struct ifnet *ifp) { struct if_msghdr *ifm; struct mbuf *m; struct rt_addrinfo info; if (V_route_cb.any_count == 0) return; bzero((caddr_t)&info, sizeof(info)); m = rtsock_msg_mbuf(RTM_IFINFO, &info); if (m == NULL) return; ifm = mtod(m, struct if_msghdr *); ifm->ifm_index = ifp->if_index; ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags; if_data_copy(ifp, &ifm->ifm_data); ifm->ifm_addrs = 0; rt_dispatch(m, AF_UNSPEC); } /* * Announce interface address arrival/withdraw. * Please do not call directly, use rt_addrmsg(). * Assume input data to be valid. * Returns 0 on success. */ int rtsock_addrmsg(int cmd, struct ifaddr *ifa, int fibnum) { struct rt_addrinfo info; struct sockaddr *sa; int ncmd; struct mbuf *m; struct ifa_msghdr *ifam; struct ifnet *ifp = ifa->ifa_ifp; struct sockaddr_storage ss; if (V_route_cb.any_count == 0) return (0); ncmd = cmd == RTM_ADD ? RTM_NEWADDR : RTM_DELADDR; bzero((caddr_t)&info, sizeof(info)); info.rti_info[RTAX_IFA] = sa = ifa->ifa_addr; info.rti_info[RTAX_IFP] = ifp->if_addr->ifa_addr; info.rti_info[RTAX_NETMASK] = rtsock_fix_netmask( info.rti_info[RTAX_IFP], ifa->ifa_netmask, &ss); info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr; if ((m = rtsock_msg_mbuf(ncmd, &info)) == NULL) return (ENOBUFS); ifam = mtod(m, struct ifa_msghdr *); ifam->ifam_index = ifp->if_index; ifam->ifam_metric = ifa->ifa_ifp->if_metric; ifam->ifam_flags = ifa->ifa_flags; ifam->ifam_addrs = info.rti_addrs; if (fibnum != RT_ALL_FIBS) { M_SETFIB(m, fibnum); m->m_flags |= RTS_FILTER_FIB; } rt_dispatch(m, sa ? sa->sa_family : AF_UNSPEC); return (0); } /* * Announce route addition/removal. * Please do not call directly, use rt_routemsg(). * Note that @rt data MAY be inconsistent/invalid: * if some userland app sends us "invalid" route message (invalid mask, * no dst, wrong address families, etc...) we need to pass it back * to app (and any other rtsock consumers) with rtm_errno field set to * non-zero value. * * Returns 0 on success. */ int rtsock_routemsg(int cmd, struct ifnet *ifp, int error, struct rtentry *rt, int fibnum) { struct rt_addrinfo info; struct sockaddr *sa; struct mbuf *m; struct rt_msghdr *rtm; struct sockaddr_storage ss; if (V_route_cb.any_count == 0) return (0); bzero((caddr_t)&info, sizeof(info)); info.rti_info[RTAX_DST] = sa = rt_key(rt); info.rti_info[RTAX_NETMASK] = rtsock_fix_netmask(sa, rt_mask(rt), &ss); info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; if ((m = rtsock_msg_mbuf(cmd, &info)) == NULL) return (ENOBUFS); rtm = mtod(m, struct rt_msghdr *); rtm->rtm_index = ifp->if_index; rtm->rtm_flags |= rt->rt_flags; rtm->rtm_errno = error; rtm->rtm_addrs = info.rti_addrs; if (fibnum != RT_ALL_FIBS) { M_SETFIB(m, fibnum); m->m_flags |= RTS_FILTER_FIB; } rt_dispatch(m, sa ? sa->sa_family : AF_UNSPEC); return (0); } /* * This is the analogue to the rt_newaddrmsg which performs the same * function but for multicast group memberhips. This is easier since * there is no route state to worry about. */ void rt_newmaddrmsg(int cmd, struct ifmultiaddr *ifma) { struct rt_addrinfo info; struct mbuf *m = NULL; struct ifnet *ifp = ifma->ifma_ifp; struct ifma_msghdr *ifmam; if (V_route_cb.any_count == 0) return; bzero((caddr_t)&info, sizeof(info)); info.rti_info[RTAX_IFA] = ifma->ifma_addr; if (ifp && ifp->if_addr) info.rti_info[RTAX_IFP] = ifp->if_addr->ifa_addr; else info.rti_info[RTAX_IFP] = NULL; /* * If a link-layer address is present, present it as a ``gateway'' * (similarly to how ARP entries, e.g., are presented). */ info.rti_info[RTAX_GATEWAY] = ifma->ifma_lladdr; m = rtsock_msg_mbuf(cmd, &info); if (m == NULL) return; ifmam = mtod(m, struct ifma_msghdr *); KASSERT(ifp != NULL, ("%s: link-layer multicast address w/o ifp\n", __func__)); ifmam->ifmam_index = ifp->if_index; ifmam->ifmam_addrs = info.rti_addrs; rt_dispatch(m, ifma->ifma_addr ? ifma->ifma_addr->sa_family : AF_UNSPEC); } static struct mbuf * rt_makeifannouncemsg(struct ifnet *ifp, int type, int what, struct rt_addrinfo *info) { struct if_announcemsghdr *ifan; struct mbuf *m; if (V_route_cb.any_count == 0) return NULL; bzero((caddr_t)info, sizeof(*info)); m = rtsock_msg_mbuf(type, info); if (m != NULL) { ifan = mtod(m, struct if_announcemsghdr *); ifan->ifan_index = ifp->if_index; strlcpy(ifan->ifan_name, ifp->if_xname, sizeof(ifan->ifan_name)); ifan->ifan_what = what; } return m; } /* * This is called to generate routing socket messages indicating * IEEE80211 wireless events. * XXX we piggyback on the RTM_IFANNOUNCE msg format in a clumsy way. */ void rt_ieee80211msg(struct ifnet *ifp, int what, void *data, size_t data_len) { struct mbuf *m; struct rt_addrinfo info; m = rt_makeifannouncemsg(ifp, RTM_IEEE80211, what, &info); if (m != NULL) { /* * Append the ieee80211 data. Try to stick it in the * mbuf containing the ifannounce msg; otherwise allocate * a new mbuf and append. * * NB: we assume m is a single mbuf. */ if (data_len > M_TRAILINGSPACE(m)) { struct mbuf *n = m_get(M_NOWAIT, MT_DATA); if (n == NULL) { m_freem(m); return; } bcopy(data, mtod(n, void *), data_len); n->m_len = data_len; m->m_next = n; } else if (data_len > 0) { bcopy(data, mtod(m, u_int8_t *) + m->m_len, data_len); m->m_len += data_len; } if (m->m_flags & M_PKTHDR) m->m_pkthdr.len += data_len; mtod(m, struct if_announcemsghdr *)->ifan_msglen += data_len; rt_dispatch(m, AF_UNSPEC); } } /* * This is called to generate routing socket messages indicating * network interface arrival and departure. */ void rt_ifannouncemsg(struct ifnet *ifp, int what) { struct mbuf *m; struct rt_addrinfo info; m = rt_makeifannouncemsg(ifp, RTM_IFANNOUNCE, what, &info); if (m != NULL) rt_dispatch(m, AF_UNSPEC); } static void rt_dispatch(struct mbuf *m, sa_family_t saf) { struct m_tag *tag; /* * Preserve the family from the sockaddr, if any, in an m_tag for * use when injecting the mbuf into the routing socket buffer from * the netisr. */ if (saf != AF_UNSPEC) { tag = m_tag_get(PACKET_TAG_RTSOCKFAM, sizeof(unsigned short), M_NOWAIT); if (tag == NULL) { m_freem(m); return; } *(unsigned short *)(tag + 1) = saf; m_tag_prepend(m, tag); } #ifdef VIMAGE if (V_loif) m->m_pkthdr.rcvif = V_loif; else { m_freem(m); return; } #endif netisr_queue(NETISR_ROUTE, m); /* mbuf is free'd on failure. */ } /* * This is used in dumping the kernel table via sysctl(). */ static int sysctl_dumpentry(struct radix_node *rn, void *vw) { struct walkarg *w = vw; struct rtentry *rt = (struct rtentry *)rn; int error = 0, size; struct rt_addrinfo info; struct sockaddr_storage ss; if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg)) return 0; if ((rt->rt_flags & RTF_HOST) == 0 ? jailed_without_vnet(w->w_req->td->td_ucred) : prison_if(w->w_req->td->td_ucred, rt_key(rt)) != 0) return (0); bzero((caddr_t)&info, sizeof(info)); info.rti_info[RTAX_DST] = rt_key(rt); info.rti_info[RTAX_GATEWAY] = rt->rt_gateway; info.rti_info[RTAX_NETMASK] = rtsock_fix_netmask(rt_key(rt), rt_mask(rt), &ss); info.rti_info[RTAX_GENMASK] = 0; if (rt->rt_ifp) { info.rti_info[RTAX_IFP] = rt->rt_ifp->if_addr->ifa_addr; info.rti_info[RTAX_IFA] = rt->rt_ifa->ifa_addr; if (rt->rt_ifp->if_flags & IFF_POINTOPOINT) info.rti_info[RTAX_BRD] = rt->rt_ifa->ifa_dstaddr; } if ((error = rtsock_msg_buffer(RTM_GET, &info, w, &size)) != 0) return (error); if (w->w_req && w->w_tmem) { struct rt_msghdr *rtm = (struct rt_msghdr *)w->w_tmem; + bzero(&rtm->rtm_index, + sizeof(*rtm) - offsetof(struct rt_msghdr, rtm_index)); if (rt->rt_flags & RTF_GWFLAG_COMPAT) rtm->rtm_flags = RTF_GATEWAY | (rt->rt_flags & ~RTF_GWFLAG_COMPAT); else rtm->rtm_flags = rt->rt_flags; rt_getmetrics(rt, &rtm->rtm_rmx); rtm->rtm_index = rt->rt_ifp->if_index; - rtm->rtm_errno = rtm->rtm_pid = rtm->rtm_seq = 0; rtm->rtm_addrs = info.rti_addrs; error = SYSCTL_OUT(w->w_req, (caddr_t)rtm, size); return (error); } return (error); } static int sysctl_iflist_ifml(struct ifnet *ifp, const struct if_data *src_ifd, struct rt_addrinfo *info, struct walkarg *w, int len) { struct if_msghdrl *ifm; struct if_data *ifd; ifm = (struct if_msghdrl *)w->w_tmem; #ifdef COMPAT_FREEBSD32 if (w->w_req->flags & SCTL_MASK32) { struct if_msghdrl32 *ifm32; ifm32 = (struct if_msghdrl32 *)ifm; ifm32->ifm_addrs = info->rti_addrs; ifm32->ifm_flags = ifp->if_flags | ifp->if_drv_flags; ifm32->ifm_index = ifp->if_index; ifm32->_ifm_spare1 = 0; ifm32->ifm_len = sizeof(*ifm32); ifm32->ifm_data_off = offsetof(struct if_msghdrl32, ifm_data); + ifm32->_ifm_spare2 = 0; ifd = &ifm32->ifm_data; } else #endif { ifm->ifm_addrs = info->rti_addrs; ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags; ifm->ifm_index = ifp->if_index; ifm->_ifm_spare1 = 0; ifm->ifm_len = sizeof(*ifm); ifm->ifm_data_off = offsetof(struct if_msghdrl, ifm_data); + ifm->_ifm_spare2 = 0; ifd = &ifm->ifm_data; } memcpy(ifd, src_ifd, sizeof(*ifd)); return (SYSCTL_OUT(w->w_req, (caddr_t)ifm, len)); } static int sysctl_iflist_ifm(struct ifnet *ifp, const struct if_data *src_ifd, struct rt_addrinfo *info, struct walkarg *w, int len) { struct if_msghdr *ifm; struct if_data *ifd; ifm = (struct if_msghdr *)w->w_tmem; #ifdef COMPAT_FREEBSD32 if (w->w_req->flags & SCTL_MASK32) { struct if_msghdr32 *ifm32; ifm32 = (struct if_msghdr32 *)ifm; ifm32->ifm_addrs = info->rti_addrs; ifm32->ifm_flags = ifp->if_flags | ifp->if_drv_flags; ifm32->ifm_index = ifp->if_index; + ifm32->_ifm_spare1 = 0; ifd = &ifm32->ifm_data; } else #endif { ifm->ifm_addrs = info->rti_addrs; ifm->ifm_flags = ifp->if_flags | ifp->if_drv_flags; ifm->ifm_index = ifp->if_index; + ifm->_ifm_spare1 = 0; ifd = &ifm->ifm_data; } memcpy(ifd, src_ifd, sizeof(*ifd)); return (SYSCTL_OUT(w->w_req, (caddr_t)ifm, len)); } static int sysctl_iflist_ifaml(struct ifaddr *ifa, struct rt_addrinfo *info, struct walkarg *w, int len) { struct ifa_msghdrl *ifam; struct if_data *ifd; ifam = (struct ifa_msghdrl *)w->w_tmem; #ifdef COMPAT_FREEBSD32 if (w->w_req->flags & SCTL_MASK32) { struct ifa_msghdrl32 *ifam32; ifam32 = (struct ifa_msghdrl32 *)ifam; ifam32->ifam_addrs = info->rti_addrs; ifam32->ifam_flags = ifa->ifa_flags; ifam32->ifam_index = ifa->ifa_ifp->if_index; ifam32->_ifam_spare1 = 0; ifam32->ifam_len = sizeof(*ifam32); ifam32->ifam_data_off = offsetof(struct ifa_msghdrl32, ifam_data); ifam32->ifam_metric = ifa->ifa_ifp->if_metric; ifd = &ifam32->ifam_data; } else #endif { ifam->ifam_addrs = info->rti_addrs; ifam->ifam_flags = ifa->ifa_flags; ifam->ifam_index = ifa->ifa_ifp->if_index; ifam->_ifam_spare1 = 0; ifam->ifam_len = sizeof(*ifam); ifam->ifam_data_off = offsetof(struct ifa_msghdrl, ifam_data); ifam->ifam_metric = ifa->ifa_ifp->if_metric; ifd = &ifam->ifam_data; } bzero(ifd, sizeof(*ifd)); ifd->ifi_datalen = sizeof(struct if_data); ifd->ifi_ipackets = counter_u64_fetch(ifa->ifa_ipackets); ifd->ifi_opackets = counter_u64_fetch(ifa->ifa_opackets); ifd->ifi_ibytes = counter_u64_fetch(ifa->ifa_ibytes); ifd->ifi_obytes = counter_u64_fetch(ifa->ifa_obytes); /* Fixup if_data carp(4) vhid. */ if (carp_get_vhid_p != NULL) ifd->ifi_vhid = (*carp_get_vhid_p)(ifa); return (SYSCTL_OUT(w->w_req, w->w_tmem, len)); } static int sysctl_iflist_ifam(struct ifaddr *ifa, struct rt_addrinfo *info, struct walkarg *w, int len) { struct ifa_msghdr *ifam; ifam = (struct ifa_msghdr *)w->w_tmem; ifam->ifam_addrs = info->rti_addrs; ifam->ifam_flags = ifa->ifa_flags; ifam->ifam_index = ifa->ifa_ifp->if_index; + ifam->_ifam_spare1 = 0; ifam->ifam_metric = ifa->ifa_ifp->if_metric; return (SYSCTL_OUT(w->w_req, w->w_tmem, len)); } static int sysctl_iflist(int af, struct walkarg *w) { struct ifnet *ifp; struct ifaddr *ifa; struct if_data ifd; struct rt_addrinfo info; int len, error = 0; struct sockaddr_storage ss; struct epoch_tracker et; bzero((caddr_t)&info, sizeof(info)); bzero(&ifd, sizeof(ifd)); NET_EPOCH_ENTER_ET(et); CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) { if (w->w_arg && w->w_arg != ifp->if_index) continue; if_data_copy(ifp, &ifd); ifa = ifp->if_addr; info.rti_info[RTAX_IFP] = ifa->ifa_addr; error = rtsock_msg_buffer(RTM_IFINFO, &info, w, &len); if (error != 0) goto done; info.rti_info[RTAX_IFP] = NULL; if (w->w_req && w->w_tmem) { if (w->w_op == NET_RT_IFLISTL) error = sysctl_iflist_ifml(ifp, &ifd, &info, w, len); else error = sysctl_iflist_ifm(ifp, &ifd, &info, w, len); if (error) goto done; } while ((ifa = CK_STAILQ_NEXT(ifa, ifa_link)) != NULL) { if (af && af != ifa->ifa_addr->sa_family) continue; if (prison_if(w->w_req->td->td_ucred, ifa->ifa_addr) != 0) continue; info.rti_info[RTAX_IFA] = ifa->ifa_addr; info.rti_info[RTAX_NETMASK] = rtsock_fix_netmask( ifa->ifa_addr, ifa->ifa_netmask, &ss); info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr; error = rtsock_msg_buffer(RTM_NEWADDR, &info, w, &len); if (error != 0) goto done; if (w->w_req && w->w_tmem) { if (w->w_op == NET_RT_IFLISTL) error = sysctl_iflist_ifaml(ifa, &info, w, len); else error = sysctl_iflist_ifam(ifa, &info, w, len); if (error) goto done; } } info.rti_info[RTAX_IFA] = NULL; info.rti_info[RTAX_NETMASK] = NULL; info.rti_info[RTAX_BRD] = NULL; } done: NET_EPOCH_EXIT_ET(et); return (error); } static int sysctl_ifmalist(int af, struct walkarg *w) { struct rt_addrinfo info; struct ifaddr *ifa; struct ifmultiaddr *ifma; struct ifnet *ifp; int error, len; error = 0; bzero((caddr_t)&info, sizeof(info)); IFNET_RLOCK_NOSLEEP(); CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) { if (w->w_arg && w->w_arg != ifp->if_index) continue; ifa = ifp->if_addr; info.rti_info[RTAX_IFP] = ifa ? ifa->ifa_addr : NULL; IF_ADDR_RLOCK(ifp); CK_STAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { if (af && af != ifma->ifma_addr->sa_family) continue; if (prison_if(w->w_req->td->td_ucred, ifma->ifma_addr) != 0) continue; info.rti_info[RTAX_IFA] = ifma->ifma_addr; info.rti_info[RTAX_GATEWAY] = (ifma->ifma_addr->sa_family != AF_LINK) ? ifma->ifma_lladdr : NULL; error = rtsock_msg_buffer(RTM_NEWMADDR, &info, w, &len); if (error != 0) break; if (w->w_req && w->w_tmem) { struct ifma_msghdr *ifmam; ifmam = (struct ifma_msghdr *)w->w_tmem; ifmam->ifmam_index = ifma->ifma_ifp->if_index; ifmam->ifmam_flags = 0; ifmam->ifmam_addrs = info.rti_addrs; + ifmam->_ifmam_spare1 = 0; error = SYSCTL_OUT(w->w_req, w->w_tmem, len); if (error != 0) break; } } IF_ADDR_RUNLOCK(ifp); if (error != 0) break; } IFNET_RUNLOCK_NOSLEEP(); return (error); } static int sysctl_rtsock(SYSCTL_HANDLER_ARGS) { RIB_RLOCK_TRACKER; int *name = (int *)arg1; u_int namelen = arg2; struct rib_head *rnh = NULL; /* silence compiler. */ int i, lim, error = EINVAL; int fib = 0; u_char af; struct walkarg w; name ++; namelen--; if (req->newptr) return (EPERM); if (name[1] == NET_RT_DUMP) { if (namelen == 3) fib = req->td->td_proc->p_fibnum; else if (namelen == 4) fib = (name[3] == RT_ALL_FIBS) ? req->td->td_proc->p_fibnum : name[3]; else return ((namelen < 3) ? EISDIR : ENOTDIR); if (fib < 0 || fib >= rt_numfibs) return (EINVAL); } else if (namelen != 3) return ((namelen < 3) ? EISDIR : ENOTDIR); af = name[0]; if (af > AF_MAX) return (EINVAL); bzero(&w, sizeof(w)); w.w_op = name[1]; w.w_arg = name[2]; w.w_req = req; error = sysctl_wire_old_buffer(req, 0); if (error) return (error); /* * Allocate reply buffer in advance. * All rtsock messages has maximum length of u_short. */ w.w_tmemsize = 65536; w.w_tmem = malloc(w.w_tmemsize, M_TEMP, M_WAITOK); switch (w.w_op) { case NET_RT_DUMP: case NET_RT_FLAGS: if (af == 0) { /* dump all tables */ i = 1; lim = AF_MAX; } else /* dump only one table */ i = lim = af; /* * take care of llinfo entries, the caller must * specify an AF */ if (w.w_op == NET_RT_FLAGS && (w.w_arg == 0 || w.w_arg & RTF_LLINFO)) { if (af != 0) error = lltable_sysctl_dumparp(af, w.w_req); else error = EINVAL; break; } /* * take care of routing entries */ for (error = 0; error == 0 && i <= lim; i++) { rnh = rt_tables_get_rnh(fib, i); if (rnh != NULL) { RIB_RLOCK(rnh); error = rnh->rnh_walktree(&rnh->head, sysctl_dumpentry, &w); RIB_RUNLOCK(rnh); } else if (af != 0) error = EAFNOSUPPORT; } break; case NET_RT_IFLIST: case NET_RT_IFLISTL: error = sysctl_iflist(af, &w); break; case NET_RT_IFMALIST: error = sysctl_ifmalist(af, &w); break; } free(w.w_tmem, M_TEMP); return (error); } static SYSCTL_NODE(_net, PF_ROUTE, routetable, CTLFLAG_RD, sysctl_rtsock, ""); /* * Definitions of protocols supported in the ROUTE domain. */ static struct domain routedomain; /* or at least forward */ static struct protosw routesw[] = { { .pr_type = SOCK_RAW, .pr_domain = &routedomain, .pr_flags = PR_ATOMIC|PR_ADDR, .pr_output = route_output, .pr_ctlinput = raw_ctlinput, .pr_init = raw_init, .pr_usrreqs = &route_usrreqs } }; static struct domain routedomain = { .dom_family = PF_ROUTE, .dom_name = "route", .dom_protosw = routesw, .dom_protoswNPROTOSW = &routesw[nitems(routesw)] }; VNET_DOMAIN_SET(route);