2 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the project nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * Copyright (c) 1982, 1986, 1988, 1993
32 * The Regents of the University of California.
33 * All rights reserved.
35 * Redistribution and use in source and binary forms, with or without
36 * modification, are permitted provided that the following conditions
38 * 1. Redistributions of source code must retain the above copyright
39 * notice, this list of conditions and the following disclaimer.
40 * 2. Redistributions in binary form must reproduce the above copyright
41 * notice, this list of conditions and the following disclaimer in the
42 * documentation and/or other materials provided with the distribution.
43 * 4. Neither the name of the University nor the names of its contributors
44 * may be used to endorse or promote products derived from this software
45 * without specific prior written permission.
47 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
48 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
49 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
50 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
51 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
52 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
53 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
54 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
55 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
56 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59 * @(#)raw_ip.c 8.2 (Berkeley) 1/4/94
62 #include <sys/cdefs.h>
63 __FBSDID("$FreeBSD$");
65 #include "opt_ipsec.h"
66 #include "opt_inet6.h"
68 #include <sys/param.h>
69 #include <sys/errno.h>
72 #include <sys/malloc.h>
76 #include <sys/protosw.h>
77 #include <sys/signalvar.h>
78 #include <sys/socket.h>
79 #include <sys/socketvar.h>
81 #include <sys/syslog.h>
84 #include <net/if_types.h>
85 #include <net/route.h>
88 #include <netinet/in.h>
89 #include <netinet/in_var.h>
90 #include <netinet/in_systm.h>
91 #include <netinet/in_pcb.h>
93 #include <netinet/icmp6.h>
94 #include <netinet/ip6.h>
95 #include <netinet6/ip6protosw.h>
96 #include <netinet6/ip6_mroute.h>
97 #include <netinet6/in6_pcb.h>
98 #include <netinet6/ip6_var.h>
99 #include <netinet6/nd6.h>
100 #include <netinet6/raw_ip6.h>
101 #include <netinet6/scope6_var.h>
104 #include <netipsec/ipsec.h>
105 #include <netipsec/ipsec6.h>
108 #include <machine/stdarg.h>
110 #define satosin6(sa) ((struct sockaddr_in6 *)(sa))
111 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
114 * Raw interface to IP6 protocol.
117 VNET_DECLARE(struct inpcbhead, ripcb);
118 VNET_DECLARE(struct inpcbinfo, ripcbinfo);
119 #define V_ripcb VNET(ripcb)
120 #define V_ripcbinfo VNET(ripcbinfo)
122 extern u_long rip_sendspace;
123 extern u_long rip_recvspace;
125 VNET_DEFINE(struct rip6stat, rip6stat);
128 * Hooks for multicast routing. They all default to NULL, so leave them not
129 * initialized and rely on BSS being set to 0.
133 * The socket used to communicate with the multicast routing daemon.
135 VNET_DEFINE(struct socket *, ip6_mrouter);
138 * The various mrouter functions.
140 int (*ip6_mrouter_set)(struct socket *, struct sockopt *);
141 int (*ip6_mrouter_get)(struct socket *, struct sockopt *);
142 int (*ip6_mrouter_done)(void);
143 int (*ip6_mforward)(struct ip6_hdr *, struct ifnet *, struct mbuf *);
144 int (*mrt6_ioctl)(u_long, caddr_t);
147 * Setup generic address and protocol structures for raw_input routine, then
148 * pass them along with mbuf chain.
151 rip6_input(struct mbuf **mp, int *offp, int proto)
154 struct mbuf *m = *mp;
155 register struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *);
156 register struct inpcb *in6p;
157 struct inpcb *last = 0;
158 struct mbuf *opts = NULL;
159 struct sockaddr_in6 fromsa;
161 V_rip6stat.rip6s_ipackets++;
163 if (faithprefix_p != NULL && (*faithprefix_p)(&ip6->ip6_dst)) {
164 /* XXX Send icmp6 host/port unreach? */
166 return (IPPROTO_DONE);
169 init_sin6(&fromsa, m); /* general init */
171 ifp = m->m_pkthdr.rcvif;
173 INP_INFO_RLOCK(&V_ripcbinfo);
174 LIST_FOREACH(in6p, &V_ripcb, inp_list) {
175 /* XXX inp locking */
176 if ((in6p->inp_vflag & INP_IPV6) == 0)
178 if (in6p->inp_ip_p &&
179 in6p->inp_ip_p != proto)
181 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr) &&
182 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &ip6->ip6_dst))
184 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr) &&
185 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, &ip6->ip6_src))
187 if (jailed_without_vnet(in6p->inp_cred)) {
189 * Allow raw socket in jail to receive multicast;
190 * assume process had PRIV_NETINET_RAW at attach,
191 * and fall through into normal filter path if so.
193 if (!IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) &&
194 prison_check_ip6(in6p->inp_cred,
198 if (in6p->in6p_cksum != -1) {
199 V_rip6stat.rip6s_isum++;
200 if (in6_cksum(m, proto, *offp,
201 m->m_pkthdr.len - *offp)) {
203 V_rip6stat.rip6s_badsum++;
209 * If this raw socket has multicast state, and we
210 * have received a multicast, check if this socket
211 * should receive it, as multicast filtering is now
212 * the responsibility of the transport layer.
214 if (in6p->in6p_moptions &&
215 IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) {
217 * If the incoming datagram is for MLD, allow it
218 * through unconditionally to the raw socket.
220 * Use the M_RTALERT_MLD flag to check for MLD
221 * traffic without having to inspect the mbuf chain
222 * more deeply, as all MLDv1/v2 host messages MUST
223 * contain the Router Alert option.
225 * In the case of MLDv1, we may not have explicitly
226 * joined the group, and may have set IFF_ALLMULTI
227 * on the interface. im6o_mc_filter() may discard
228 * control traffic we actually need to see.
230 * Userland multicast routing daemons should continue
231 * filter the control traffic appropriately.
235 blocked = MCAST_PASS;
236 if ((m->m_flags & M_RTALERT_MLD) == 0) {
237 struct sockaddr_in6 mcaddr;
239 bzero(&mcaddr, sizeof(struct sockaddr_in6));
240 mcaddr.sin6_len = sizeof(struct sockaddr_in6);
241 mcaddr.sin6_family = AF_INET6;
242 mcaddr.sin6_addr = ip6->ip6_dst;
244 blocked = im6o_mc_filter(in6p->in6p_moptions,
246 (struct sockaddr *)&mcaddr,
247 (struct sockaddr *)&fromsa);
249 if (blocked != MCAST_PASS) {
250 IP6STAT_INC(ip6s_notmember);
255 struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
259 * Check AH/ESP integrity.
261 if (n && ipsec6_in_reject(n, last)) {
263 V_ipsec6stat.in_polvio++;
264 /* Do not inject data into pcb. */
268 if (last->inp_flags & INP_CONTROLOPTS ||
269 last->inp_socket->so_options & SO_TIMESTAMP)
270 ip6_savecontrol(last, n, &opts);
271 /* strip intermediate headers */
273 if (sbappendaddr(&last->inp_socket->so_rcv,
274 (struct sockaddr *)&fromsa,
279 V_rip6stat.rip6s_fullsock++;
281 sorwakeup(last->inp_socket);
288 INP_INFO_RUNLOCK(&V_ripcbinfo);
291 * Check AH/ESP integrity.
293 if ((last != NULL) && ipsec6_in_reject(m, last)) {
295 V_ipsec6stat.in_polvio++;
296 V_ip6stat.ip6s_delivered--;
297 /* Do not inject data into pcb. */
302 if (last->inp_flags & INP_CONTROLOPTS ||
303 last->inp_socket->so_options & SO_TIMESTAMP)
304 ip6_savecontrol(last, m, &opts);
305 /* Strip intermediate headers. */
307 if (sbappendaddr(&last->inp_socket->so_rcv,
308 (struct sockaddr *)&fromsa, m, opts) == 0) {
312 V_rip6stat.rip6s_fullsock++;
314 sorwakeup(last->inp_socket);
317 V_rip6stat.rip6s_nosock++;
318 if (m->m_flags & M_MCAST)
319 V_rip6stat.rip6s_nosockmcast++;
320 if (proto == IPPROTO_NONE)
323 char *prvnxtp = ip6_get_prevhdr(m, *offp); /* XXX */
324 icmp6_error(m, ICMP6_PARAM_PROB,
325 ICMP6_PARAMPROB_NEXTHEADER,
326 prvnxtp - mtod(m, char *));
328 V_ip6stat.ip6s_delivered--;
330 return (IPPROTO_DONE);
334 rip6_ctlinput(int cmd, struct sockaddr *sa, void *d)
339 struct ip6ctlparam *ip6cp = NULL;
340 const struct sockaddr_in6 *sa6_src = NULL;
342 struct inpcb *(*notify)(struct inpcb *, int) = in6_rtchange;
344 if (sa->sa_family != AF_INET6 ||
345 sa->sa_len != sizeof(struct sockaddr_in6))
348 if ((unsigned)cmd >= PRC_NCMDS)
350 if (PRC_IS_REDIRECT(cmd))
351 notify = in6_rtchange, d = NULL;
352 else if (cmd == PRC_HOSTDEAD)
354 else if (inet6ctlerrmap[cmd] == 0)
358 * If the parameter is from icmp6, decode it.
361 ip6cp = (struct ip6ctlparam *)d;
363 ip6 = ip6cp->ip6c_ip6;
364 off = ip6cp->ip6c_off;
365 cmdarg = ip6cp->ip6c_cmdarg;
366 sa6_src = ip6cp->ip6c_src;
374 (void) in6_pcbnotify(&V_ripcbinfo, sa, 0,
375 (const struct sockaddr *)sa6_src, 0, cmd, cmdarg, notify);
379 * Generate IPv6 header and pass packet to ip6_output. Tack on options user
380 * may have setup with control call.
384 rip6_output(struct mbuf *m, ...)
386 rip6_output(m, va_alist)
391 struct mbuf *control;
393 struct sockaddr_in6 *dstsock;
394 struct in6_addr *dst;
397 u_int plen = m->m_pkthdr.len;
399 struct ip6_pktopts opt, *optp;
400 struct ifnet *oifp = NULL;
401 int type = 0, code = 0; /* for ICMPv6 output statistics only */
402 int scope_ambiguous = 0;
403 struct in6_addr in6a;
407 so = va_arg(ap, struct socket *);
408 dstsock = va_arg(ap, struct sockaddr_in6 *);
409 control = va_arg(ap, struct mbuf *);
412 in6p = sotoinpcb(so);
415 dst = &dstsock->sin6_addr;
416 if (control != NULL) {
417 if ((error = ip6_setpktopts(control, &opt,
418 in6p->in6p_outputopts, so->so_cred,
419 so->so_proto->pr_protocol)) != 0) {
424 optp = in6p->in6p_outputopts;
427 * Check and convert scope zone ID into internal form.
429 * XXX: we may still need to determine the zone later.
431 if (!(so->so_state & SS_ISCONNECTED)) {
432 if (dstsock->sin6_scope_id == 0 && !V_ip6_use_defzone)
434 if ((error = sa6_embedscope(dstsock, V_ip6_use_defzone)) != 0)
439 * For an ICMPv6 packet, we should know its type and code to update
442 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) {
443 struct icmp6_hdr *icmp6;
444 if (m->m_len < sizeof(struct icmp6_hdr) &&
445 (m = m_pullup(m, sizeof(struct icmp6_hdr))) == NULL) {
449 icmp6 = mtod(m, struct icmp6_hdr *);
450 type = icmp6->icmp6_type;
451 code = icmp6->icmp6_code;
454 M_PREPEND(m, sizeof(*ip6), M_DONTWAIT);
459 ip6 = mtod(m, struct ip6_hdr *);
462 * Source address selection.
464 error = in6_selectsrc(dstsock, optp, in6p, NULL, so->so_cred,
468 error = prison_check_ip6(in6p->inp_cred, &in6a);
473 if (oifp && scope_ambiguous) {
475 * Application should provide a proper zone ID or the use of
476 * default zone IDs should be enabled. Unfortunately, some
477 * applications do not behave as it should, so we need a
478 * workaround. Even if an appropriate ID is not determined
479 * (when it's required), if we can determine the outgoing
480 * interface. determine the zone ID based on the interface.
482 error = in6_setscope(&dstsock->sin6_addr, oifp, NULL);
486 ip6->ip6_dst = dstsock->sin6_addr;
489 * Fill in the rest of the IPv6 header fields.
491 ip6->ip6_flow = (ip6->ip6_flow & ~IPV6_FLOWINFO_MASK) |
492 (in6p->inp_flow & IPV6_FLOWINFO_MASK);
493 ip6->ip6_vfc = (ip6->ip6_vfc & ~IPV6_VERSION_MASK) |
494 (IPV6_VERSION & IPV6_VERSION_MASK);
497 * ip6_plen will be filled in ip6_output, so not fill it here.
499 ip6->ip6_nxt = in6p->inp_ip_p;
500 ip6->ip6_hlim = in6_selecthlim(in6p, oifp);
502 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6 ||
503 in6p->in6p_cksum != -1) {
508 /* Compute checksum. */
509 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6)
510 off = offsetof(struct icmp6_hdr, icmp6_cksum);
512 off = in6p->in6p_cksum;
513 if (plen < off + 1) {
517 off += sizeof(struct ip6_hdr);
520 while (n && n->m_len <= off) {
526 p = (u_int16_t *)(mtod(n, caddr_t) + off);
528 *p = in6_cksum(m, ip6->ip6_nxt, sizeof(*ip6), plen);
531 error = ip6_output(m, optp, NULL, 0, in6p->in6p_moptions, &oifp, in6p);
532 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) {
534 icmp6_ifoutstat_inc(oifp, type, code);
535 ICMP6STAT_INC(icp6s_outhist[type]);
537 V_rip6stat.rip6s_opackets++;
546 if (control != NULL) {
547 ip6_clearpktopts(&opt, -1);
555 * Raw IPv6 socket option processing.
558 rip6_ctloutput(struct socket *so, struct sockopt *sopt)
562 if (sopt->sopt_level == IPPROTO_ICMPV6)
564 * XXX: is it better to call icmp6_ctloutput() directly
567 return (icmp6_ctloutput(so, sopt));
568 else if (sopt->sopt_level != IPPROTO_IPV6)
573 switch (sopt->sopt_dir) {
575 switch (sopt->sopt_name) {
583 error = ip6_mrouter_get ? ip6_mrouter_get(so, sopt) :
587 error = ip6_raw_ctloutput(so, sopt);
590 error = ip6_ctloutput(so, sopt);
596 switch (sopt->sopt_name) {
604 error = ip6_mrouter_set ? ip6_mrouter_set(so, sopt) :
608 error = ip6_raw_ctloutput(so, sopt);
611 error = ip6_ctloutput(so, sopt);
621 rip6_attach(struct socket *so, int proto, struct thread *td)
624 struct icmp6_filter *filter;
628 KASSERT(inp == NULL, ("rip6_attach: inp != NULL"));
630 error = priv_check(td, PRIV_NETINET_RAW);
633 error = soreserve(so, rip_sendspace, rip_recvspace);
636 filter = malloc(sizeof(struct icmp6_filter), M_PCB, M_NOWAIT);
639 INP_INFO_WLOCK(&V_ripcbinfo);
640 error = in_pcballoc(so, &V_ripcbinfo);
642 INP_INFO_WUNLOCK(&V_ripcbinfo);
646 inp = (struct inpcb *)so->so_pcb;
647 INP_INFO_WUNLOCK(&V_ripcbinfo);
648 inp->inp_vflag |= INP_IPV6;
649 inp->inp_ip_p = (long)proto;
650 inp->in6p_hops = -1; /* use kernel default */
651 inp->in6p_cksum = -1;
652 inp->in6p_icmp6filt = filter;
653 ICMP6_FILTER_SETPASSALL(inp->in6p_icmp6filt);
659 rip6_detach(struct socket *so)
664 KASSERT(inp != NULL, ("rip6_detach: inp == NULL"));
666 if (so == V_ip6_mrouter && ip6_mrouter_done)
669 INP_INFO_WLOCK(&V_ripcbinfo);
671 free(inp->in6p_icmp6filt, M_PCB);
674 INP_INFO_WUNLOCK(&V_ripcbinfo);
677 /* XXXRW: This can't ever be called. */
679 rip6_abort(struct socket *so)
684 KASSERT(inp != NULL, ("rip6_abort: inp == NULL"));
686 soisdisconnected(so);
690 rip6_close(struct socket *so)
695 KASSERT(inp != NULL, ("rip6_close: inp == NULL"));
697 soisdisconnected(so);
701 rip6_disconnect(struct socket *so)
706 KASSERT(inp != NULL, ("rip6_disconnect: inp == NULL"));
708 if ((so->so_state & SS_ISCONNECTED) == 0)
710 inp->in6p_faddr = in6addr_any;
716 rip6_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
719 struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam;
720 struct ifaddr *ifa = NULL;
724 KASSERT(inp != NULL, ("rip6_bind: inp == NULL"));
726 if (nam->sa_len != sizeof(*addr))
728 if ((error = prison_check_ip6(td->td_ucred, &addr->sin6_addr)) != 0)
730 if (TAILQ_EMPTY(&V_ifnet) || addr->sin6_family != AF_INET6)
731 return (EADDRNOTAVAIL);
732 if ((error = sa6_embedscope(addr, V_ip6_use_defzone)) != 0)
735 if (!IN6_IS_ADDR_UNSPECIFIED(&addr->sin6_addr) &&
736 (ifa = ifa_ifwithaddr((struct sockaddr *)addr)) == NULL)
737 return (EADDRNOTAVAIL);
739 ((struct in6_ifaddr *)ifa)->ia6_flags &
740 (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|
741 IN6_IFF_DETACHED|IN6_IFF_DEPRECATED)) {
743 return (EADDRNOTAVAIL);
747 INP_INFO_WLOCK(&V_ripcbinfo);
749 inp->in6p_laddr = addr->sin6_addr;
751 INP_INFO_WUNLOCK(&V_ripcbinfo);
756 rip6_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
759 struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam;
760 struct in6_addr in6a;
761 struct ifnet *ifp = NULL;
762 int error = 0, scope_ambiguous = 0;
765 KASSERT(inp != NULL, ("rip6_connect: inp == NULL"));
767 if (nam->sa_len != sizeof(*addr))
769 if (TAILQ_EMPTY(&V_ifnet))
770 return (EADDRNOTAVAIL);
771 if (addr->sin6_family != AF_INET6)
772 return (EAFNOSUPPORT);
775 * Application should provide a proper zone ID or the use of default
776 * zone IDs should be enabled. Unfortunately, some applications do
777 * not behave as it should, so we need a workaround. Even if an
778 * appropriate ID is not determined, we'll see if we can determine
779 * the outgoing interface. If we can, determine the zone ID based on
780 * the interface below.
782 if (addr->sin6_scope_id == 0 && !V_ip6_use_defzone)
784 if ((error = sa6_embedscope(addr, V_ip6_use_defzone)) != 0)
787 INP_INFO_WLOCK(&V_ripcbinfo);
789 /* Source address selection. XXX: need pcblookup? */
790 error = in6_selectsrc(addr, inp->in6p_outputopts,
791 inp, NULL, so->so_cred, &ifp, &in6a);
794 INP_INFO_WUNLOCK(&V_ripcbinfo);
799 if (ifp && scope_ambiguous &&
800 (error = in6_setscope(&addr->sin6_addr, ifp, NULL)) != 0) {
802 INP_INFO_WUNLOCK(&V_ripcbinfo);
805 inp->in6p_faddr = addr->sin6_addr;
806 inp->in6p_laddr = in6a;
809 INP_INFO_WUNLOCK(&V_ripcbinfo);
814 rip6_shutdown(struct socket *so)
819 KASSERT(inp != NULL, ("rip6_shutdown: inp == NULL"));
828 rip6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
829 struct mbuf *control, struct thread *td)
832 struct sockaddr_in6 tmp;
833 struct sockaddr_in6 *dst;
837 KASSERT(inp != NULL, ("rip6_send: inp == NULL"));
839 /* Always copy sockaddr to avoid overwrites. */
841 if (so->so_state & SS_ISCONNECTED) {
847 bzero(&tmp, sizeof(tmp));
848 tmp.sin6_family = AF_INET6;
849 tmp.sin6_len = sizeof(struct sockaddr_in6);
851 bcopy(&inp->in6p_faddr, &tmp.sin6_addr,
852 sizeof(struct in6_addr));
860 if (nam->sa_len != sizeof(struct sockaddr_in6)) {
864 tmp = *(struct sockaddr_in6 *)nam;
867 if (dst->sin6_family == AF_UNSPEC) {
869 * XXX: we allow this case for backward
870 * compatibility to buggy applications that
871 * rely on old (and wrong) kernel behavior.
873 log(LOG_INFO, "rip6 SEND: address family is "
874 "unspec. Assume AF_INET6\n");
875 dst->sin6_family = AF_INET6;
876 } else if (dst->sin6_family != AF_INET6) {
878 return(EAFNOSUPPORT);
881 ret = rip6_output(m, so, dst, control);
885 struct pr_usrreqs rip6_usrreqs = {
886 .pru_abort = rip6_abort,
887 .pru_attach = rip6_attach,
888 .pru_bind = rip6_bind,
889 .pru_connect = rip6_connect,
890 .pru_control = in6_control,
891 .pru_detach = rip6_detach,
892 .pru_disconnect = rip6_disconnect,
893 .pru_peeraddr = in6_getpeeraddr,
894 .pru_send = rip6_send,
895 .pru_shutdown = rip6_shutdown,
896 .pru_sockaddr = in6_getsockaddr,
897 .pru_close = rip6_close,