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
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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
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25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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33 * All rights reserved.
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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.
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44 * may be used to endorse or promote products derived from this software
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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
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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 <netinet/ip_var.h>
96 #include <netinet6/ip6protosw.h>
97 #include <netinet6/ip6_mroute.h>
98 #include <netinet6/in6_pcb.h>
99 #include <netinet6/ip6_var.h>
100 #include <netinet6/nd6.h>
101 #include <netinet6/raw_ip6.h>
102 #include <netinet6/scope6_var.h>
103 #include <netinet6/send.h>
106 #include <netipsec/ipsec.h>
107 #include <netipsec/ipsec6.h>
110 #include <machine/stdarg.h>
112 #define satosin6(sa) ((struct sockaddr_in6 *)(sa))
113 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
116 * Raw interface to IP6 protocol.
119 VNET_DECLARE(struct inpcbhead, ripcb);
120 VNET_DECLARE(struct inpcbinfo, ripcbinfo);
121 #define V_ripcb VNET(ripcb)
122 #define V_ripcbinfo VNET(ripcbinfo)
124 extern u_long rip_sendspace;
125 extern u_long rip_recvspace;
127 VNET_DEFINE(struct rip6stat, rip6stat);
130 * Hooks for multicast routing. They all default to NULL, so leave them not
131 * initialized and rely on BSS being set to 0.
135 * The socket used to communicate with the multicast routing daemon.
137 VNET_DEFINE(struct socket *, ip6_mrouter);
140 * The various mrouter functions.
142 int (*ip6_mrouter_set)(struct socket *, struct sockopt *);
143 int (*ip6_mrouter_get)(struct socket *, struct sockopt *);
144 int (*ip6_mrouter_done)(void);
145 int (*ip6_mforward)(struct ip6_hdr *, struct ifnet *, struct mbuf *);
146 int (*mrt6_ioctl)(u_long, caddr_t);
149 * Setup generic address and protocol structures for raw_input routine, then
150 * pass them along with mbuf chain.
153 rip6_input(struct mbuf **mp, int *offp, int proto)
156 struct mbuf *m = *mp;
157 register struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *);
158 register struct inpcb *in6p;
159 struct inpcb *last = 0;
160 struct mbuf *opts = NULL;
161 struct sockaddr_in6 fromsa;
163 V_rip6stat.rip6s_ipackets++;
165 if (faithprefix_p != NULL && (*faithprefix_p)(&ip6->ip6_dst)) {
166 /* XXX Send icmp6 host/port unreach? */
168 return (IPPROTO_DONE);
171 init_sin6(&fromsa, m); /* general init */
173 ifp = m->m_pkthdr.rcvif;
175 INP_INFO_RLOCK(&V_ripcbinfo);
176 LIST_FOREACH(in6p, &V_ripcb, inp_list) {
177 /* XXX inp locking */
178 if ((in6p->inp_vflag & INP_IPV6) == 0)
180 if (in6p->inp_ip_p &&
181 in6p->inp_ip_p != proto)
183 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr) &&
184 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &ip6->ip6_dst))
186 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr) &&
187 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, &ip6->ip6_src))
189 if (jailed_without_vnet(in6p->inp_cred)) {
191 * Allow raw socket in jail to receive multicast;
192 * assume process had PRIV_NETINET_RAW at attach,
193 * and fall through into normal filter path if so.
195 if (!IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) &&
196 prison_check_ip6(in6p->inp_cred,
200 if (in6p->in6p_cksum != -1) {
201 V_rip6stat.rip6s_isum++;
202 if (in6_cksum(m, proto, *offp,
203 m->m_pkthdr.len - *offp)) {
205 V_rip6stat.rip6s_badsum++;
211 * If this raw socket has multicast state, and we
212 * have received a multicast, check if this socket
213 * should receive it, as multicast filtering is now
214 * the responsibility of the transport layer.
216 if (in6p->in6p_moptions &&
217 IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) {
219 * If the incoming datagram is for MLD, allow it
220 * through unconditionally to the raw socket.
222 * Use the M_RTALERT_MLD flag to check for MLD
223 * traffic without having to inspect the mbuf chain
224 * more deeply, as all MLDv1/v2 host messages MUST
225 * contain the Router Alert option.
227 * In the case of MLDv1, we may not have explicitly
228 * joined the group, and may have set IFF_ALLMULTI
229 * on the interface. im6o_mc_filter() may discard
230 * control traffic we actually need to see.
232 * Userland multicast routing daemons should continue
233 * filter the control traffic appropriately.
237 blocked = MCAST_PASS;
238 if ((m->m_flags & M_RTALERT_MLD) == 0) {
239 struct sockaddr_in6 mcaddr;
241 bzero(&mcaddr, sizeof(struct sockaddr_in6));
242 mcaddr.sin6_len = sizeof(struct sockaddr_in6);
243 mcaddr.sin6_family = AF_INET6;
244 mcaddr.sin6_addr = ip6->ip6_dst;
246 blocked = im6o_mc_filter(in6p->in6p_moptions,
248 (struct sockaddr *)&mcaddr,
249 (struct sockaddr *)&fromsa);
251 if (blocked != MCAST_PASS) {
252 IP6STAT_INC(ip6s_notmember);
258 struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
262 * Check AH/ESP integrity.
264 if (n && ipsec6_in_reject(n, last)) {
266 V_ipsec6stat.in_polvio++;
267 /* Do not inject data into pcb. */
271 if (last->inp_flags & INP_CONTROLOPTS ||
272 last->inp_socket->so_options & SO_TIMESTAMP)
273 ip6_savecontrol(last, n, &opts);
274 /* strip intermediate headers */
276 if (sbappendaddr(&last->inp_socket->so_rcv,
277 (struct sockaddr *)&fromsa,
282 V_rip6stat.rip6s_fullsock++;
284 sorwakeup(last->inp_socket);
291 INP_INFO_RUNLOCK(&V_ripcbinfo);
294 * Check AH/ESP integrity.
296 if ((last != NULL) && ipsec6_in_reject(m, last)) {
298 V_ipsec6stat.in_polvio++;
299 V_ip6stat.ip6s_delivered--;
300 /* Do not inject data into pcb. */
305 if (last->inp_flags & INP_CONTROLOPTS ||
306 last->inp_socket->so_options & SO_TIMESTAMP)
307 ip6_savecontrol(last, m, &opts);
308 /* Strip intermediate headers. */
310 if (sbappendaddr(&last->inp_socket->so_rcv,
311 (struct sockaddr *)&fromsa, m, opts) == 0) {
315 V_rip6stat.rip6s_fullsock++;
317 sorwakeup(last->inp_socket);
320 V_rip6stat.rip6s_nosock++;
321 if (m->m_flags & M_MCAST)
322 V_rip6stat.rip6s_nosockmcast++;
323 if (proto == IPPROTO_NONE)
326 char *prvnxtp = ip6_get_prevhdr(m, *offp); /* XXX */
327 icmp6_error(m, ICMP6_PARAM_PROB,
328 ICMP6_PARAMPROB_NEXTHEADER,
329 prvnxtp - mtod(m, char *));
331 V_ip6stat.ip6s_delivered--;
333 return (IPPROTO_DONE);
337 rip6_ctlinput(int cmd, struct sockaddr *sa, void *d)
342 struct ip6ctlparam *ip6cp = NULL;
343 const struct sockaddr_in6 *sa6_src = NULL;
345 struct inpcb *(*notify)(struct inpcb *, int) = in6_rtchange;
347 if (sa->sa_family != AF_INET6 ||
348 sa->sa_len != sizeof(struct sockaddr_in6))
351 if ((unsigned)cmd >= PRC_NCMDS)
353 if (PRC_IS_REDIRECT(cmd))
354 notify = in6_rtchange, d = NULL;
355 else if (cmd == PRC_HOSTDEAD)
357 else if (inet6ctlerrmap[cmd] == 0)
361 * If the parameter is from icmp6, decode it.
364 ip6cp = (struct ip6ctlparam *)d;
366 ip6 = ip6cp->ip6c_ip6;
367 off = ip6cp->ip6c_off;
368 cmdarg = ip6cp->ip6c_cmdarg;
369 sa6_src = ip6cp->ip6c_src;
377 (void) in6_pcbnotify(&V_ripcbinfo, sa, 0,
378 (const struct sockaddr *)sa6_src, 0, cmd, cmdarg, notify);
382 * Generate IPv6 header and pass packet to ip6_output. Tack on options user
383 * may have setup with control call.
387 rip6_output(struct mbuf *m, ...)
389 rip6_output(m, va_alist)
394 struct mbuf *control;
397 struct sockaddr_in6 *dstsock;
398 struct in6_addr *dst;
401 u_int plen = m->m_pkthdr.len;
403 struct ip6_pktopts opt, *optp;
404 struct ifnet *oifp = NULL;
405 int type = 0, code = 0; /* for ICMPv6 output statistics only */
406 int scope_ambiguous = 0;
408 struct in6_addr in6a;
412 so = va_arg(ap, struct socket *);
413 dstsock = va_arg(ap, struct sockaddr_in6 *);
414 control = va_arg(ap, struct mbuf *);
417 in6p = sotoinpcb(so);
420 dst = &dstsock->sin6_addr;
421 if (control != NULL) {
422 if ((error = ip6_setpktopts(control, &opt,
423 in6p->in6p_outputopts, so->so_cred,
424 so->so_proto->pr_protocol)) != 0) {
429 optp = in6p->in6p_outputopts;
432 * Check and convert scope zone ID into internal form.
434 * XXX: we may still need to determine the zone later.
436 if (!(so->so_state & SS_ISCONNECTED)) {
437 if (!optp || !optp->ip6po_pktinfo ||
438 !optp->ip6po_pktinfo->ipi6_ifindex)
439 use_defzone = V_ip6_use_defzone;
440 if (dstsock->sin6_scope_id == 0 && !use_defzone)
442 if ((error = sa6_embedscope(dstsock, use_defzone)) != 0)
447 * For an ICMPv6 packet, we should know its type and code to update
450 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) {
451 struct icmp6_hdr *icmp6;
452 if (m->m_len < sizeof(struct icmp6_hdr) &&
453 (m = m_pullup(m, sizeof(struct icmp6_hdr))) == NULL) {
457 icmp6 = mtod(m, struct icmp6_hdr *);
458 type = icmp6->icmp6_type;
459 code = icmp6->icmp6_code;
462 M_PREPEND(m, sizeof(*ip6), M_DONTWAIT);
467 ip6 = mtod(m, struct ip6_hdr *);
470 * Source address selection.
472 error = in6_selectsrc(dstsock, optp, in6p, NULL, so->so_cred,
476 error = prison_check_ip6(in6p->inp_cred, &in6a);
481 if (oifp && scope_ambiguous) {
483 * Application should provide a proper zone ID or the use of
484 * default zone IDs should be enabled. Unfortunately, some
485 * applications do not behave as it should, so we need a
486 * workaround. Even if an appropriate ID is not determined
487 * (when it's required), if we can determine the outgoing
488 * interface. determine the zone ID based on the interface.
490 error = in6_setscope(&dstsock->sin6_addr, oifp, NULL);
494 ip6->ip6_dst = dstsock->sin6_addr;
497 * Fill in the rest of the IPv6 header fields.
499 ip6->ip6_flow = (ip6->ip6_flow & ~IPV6_FLOWINFO_MASK) |
500 (in6p->inp_flow & IPV6_FLOWINFO_MASK);
501 ip6->ip6_vfc = (ip6->ip6_vfc & ~IPV6_VERSION_MASK) |
502 (IPV6_VERSION & IPV6_VERSION_MASK);
505 * ip6_plen will be filled in ip6_output, so not fill it here.
507 ip6->ip6_nxt = in6p->inp_ip_p;
508 ip6->ip6_hlim = in6_selecthlim(in6p, oifp);
510 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6 ||
511 in6p->in6p_cksum != -1) {
516 /* Compute checksum. */
517 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6)
518 off = offsetof(struct icmp6_hdr, icmp6_cksum);
520 off = in6p->in6p_cksum;
521 if (plen < off + 1) {
525 off += sizeof(struct ip6_hdr);
528 while (n && n->m_len <= off) {
534 p = (u_int16_t *)(mtod(n, caddr_t) + off);
536 *p = in6_cksum(m, ip6->ip6_nxt, sizeof(*ip6), plen);
540 * Send RA/RS messages to user land for protection, before sending
541 * them to rtadvd/rtsol.
543 if ((send_sendso_input_hook != NULL) &&
544 so->so_proto->pr_protocol == IPPROTO_ICMPV6) {
546 case ND_ROUTER_ADVERT:
547 case ND_ROUTER_SOLICIT:
548 mtag = m_tag_get(PACKET_TAG_ND_OUTGOING,
549 sizeof(unsigned short), M_NOWAIT);
552 m_tag_prepend(m, mtag);
556 error = ip6_output(m, optp, NULL, 0, in6p->in6p_moptions, &oifp, in6p);
557 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) {
559 icmp6_ifoutstat_inc(oifp, type, code);
560 ICMP6STAT_INC(icp6s_outhist[type]);
562 V_rip6stat.rip6s_opackets++;
571 if (control != NULL) {
572 ip6_clearpktopts(&opt, -1);
580 * Raw IPv6 socket option processing.
583 rip6_ctloutput(struct socket *so, struct sockopt *sopt)
588 if (sopt->sopt_level == IPPROTO_ICMPV6)
590 * XXX: is it better to call icmp6_ctloutput() directly
593 return (icmp6_ctloutput(so, sopt));
594 else if (sopt->sopt_level != IPPROTO_IPV6) {
595 if (sopt->sopt_level == SOL_SOCKET &&
596 sopt->sopt_name == SO_SETFIB) {
599 inp->inp_inc.inc_fibnum = so->so_fibnum;
608 switch (sopt->sopt_dir) {
610 switch (sopt->sopt_name) {
618 error = ip6_mrouter_get ? ip6_mrouter_get(so, sopt) :
622 error = ip6_raw_ctloutput(so, sopt);
625 error = ip6_ctloutput(so, sopt);
631 switch (sopt->sopt_name) {
639 error = ip6_mrouter_set ? ip6_mrouter_set(so, sopt) :
643 error = ip6_raw_ctloutput(so, sopt);
646 error = ip6_ctloutput(so, sopt);
656 rip6_attach(struct socket *so, int proto, struct thread *td)
659 struct icmp6_filter *filter;
663 KASSERT(inp == NULL, ("rip6_attach: inp != NULL"));
665 error = priv_check(td, PRIV_NETINET_RAW);
668 error = soreserve(so, rip_sendspace, rip_recvspace);
671 filter = malloc(sizeof(struct icmp6_filter), M_PCB, M_NOWAIT);
674 INP_INFO_WLOCK(&V_ripcbinfo);
675 error = in_pcballoc(so, &V_ripcbinfo);
677 INP_INFO_WUNLOCK(&V_ripcbinfo);
681 inp = (struct inpcb *)so->so_pcb;
682 INP_INFO_WUNLOCK(&V_ripcbinfo);
683 inp->inp_vflag |= INP_IPV6;
684 inp->inp_ip_p = (long)proto;
685 inp->in6p_hops = -1; /* use kernel default */
686 inp->in6p_cksum = -1;
687 inp->in6p_icmp6filt = filter;
688 ICMP6_FILTER_SETPASSALL(inp->in6p_icmp6filt);
694 rip6_detach(struct socket *so)
699 KASSERT(inp != NULL, ("rip6_detach: inp == NULL"));
701 if (so == V_ip6_mrouter && ip6_mrouter_done)
704 INP_INFO_WLOCK(&V_ripcbinfo);
706 free(inp->in6p_icmp6filt, M_PCB);
709 INP_INFO_WUNLOCK(&V_ripcbinfo);
712 /* XXXRW: This can't ever be called. */
714 rip6_abort(struct socket *so)
719 KASSERT(inp != NULL, ("rip6_abort: inp == NULL"));
721 soisdisconnected(so);
725 rip6_close(struct socket *so)
730 KASSERT(inp != NULL, ("rip6_close: inp == NULL"));
732 soisdisconnected(so);
736 rip6_disconnect(struct socket *so)
741 KASSERT(inp != NULL, ("rip6_disconnect: inp == NULL"));
743 if ((so->so_state & SS_ISCONNECTED) == 0)
745 inp->in6p_faddr = in6addr_any;
751 rip6_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
754 struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam;
755 struct ifaddr *ifa = NULL;
759 KASSERT(inp != NULL, ("rip6_bind: inp == NULL"));
761 if (nam->sa_len != sizeof(*addr))
763 if ((error = prison_check_ip6(td->td_ucred, &addr->sin6_addr)) != 0)
765 if (TAILQ_EMPTY(&V_ifnet) || addr->sin6_family != AF_INET6)
766 return (EADDRNOTAVAIL);
767 if ((error = sa6_embedscope(addr, V_ip6_use_defzone)) != 0)
770 if (!IN6_IS_ADDR_UNSPECIFIED(&addr->sin6_addr) &&
771 (ifa = ifa_ifwithaddr((struct sockaddr *)addr)) == NULL)
772 return (EADDRNOTAVAIL);
774 ((struct in6_ifaddr *)ifa)->ia6_flags &
775 (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|
776 IN6_IFF_DETACHED|IN6_IFF_DEPRECATED)) {
778 return (EADDRNOTAVAIL);
782 INP_INFO_WLOCK(&V_ripcbinfo);
784 inp->in6p_laddr = addr->sin6_addr;
786 INP_INFO_WUNLOCK(&V_ripcbinfo);
791 rip6_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
794 struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam;
795 struct in6_addr in6a;
796 struct ifnet *ifp = NULL;
797 int error = 0, scope_ambiguous = 0;
800 KASSERT(inp != NULL, ("rip6_connect: inp == NULL"));
802 if (nam->sa_len != sizeof(*addr))
804 if (TAILQ_EMPTY(&V_ifnet))
805 return (EADDRNOTAVAIL);
806 if (addr->sin6_family != AF_INET6)
807 return (EAFNOSUPPORT);
810 * Application should provide a proper zone ID or the use of default
811 * zone IDs should be enabled. Unfortunately, some applications do
812 * not behave as it should, so we need a workaround. Even if an
813 * appropriate ID is not determined, we'll see if we can determine
814 * the outgoing interface. If we can, determine the zone ID based on
815 * the interface below.
817 if (addr->sin6_scope_id == 0 && !V_ip6_use_defzone)
819 if ((error = sa6_embedscope(addr, V_ip6_use_defzone)) != 0)
822 INP_INFO_WLOCK(&V_ripcbinfo);
824 /* Source address selection. XXX: need pcblookup? */
825 error = in6_selectsrc(addr, inp->in6p_outputopts,
826 inp, NULL, so->so_cred, &ifp, &in6a);
829 INP_INFO_WUNLOCK(&V_ripcbinfo);
834 if (ifp && scope_ambiguous &&
835 (error = in6_setscope(&addr->sin6_addr, ifp, NULL)) != 0) {
837 INP_INFO_WUNLOCK(&V_ripcbinfo);
840 inp->in6p_faddr = addr->sin6_addr;
841 inp->in6p_laddr = in6a;
844 INP_INFO_WUNLOCK(&V_ripcbinfo);
849 rip6_shutdown(struct socket *so)
854 KASSERT(inp != NULL, ("rip6_shutdown: inp == NULL"));
863 rip6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
864 struct mbuf *control, struct thread *td)
867 struct sockaddr_in6 tmp;
868 struct sockaddr_in6 *dst;
872 KASSERT(inp != NULL, ("rip6_send: inp == NULL"));
874 /* Always copy sockaddr to avoid overwrites. */
876 if (so->so_state & SS_ISCONNECTED) {
882 bzero(&tmp, sizeof(tmp));
883 tmp.sin6_family = AF_INET6;
884 tmp.sin6_len = sizeof(struct sockaddr_in6);
886 bcopy(&inp->in6p_faddr, &tmp.sin6_addr,
887 sizeof(struct in6_addr));
895 if (nam->sa_len != sizeof(struct sockaddr_in6)) {
899 tmp = *(struct sockaddr_in6 *)nam;
902 if (dst->sin6_family == AF_UNSPEC) {
904 * XXX: we allow this case for backward
905 * compatibility to buggy applications that
906 * rely on old (and wrong) kernel behavior.
908 log(LOG_INFO, "rip6 SEND: address family is "
909 "unspec. Assume AF_INET6\n");
910 dst->sin6_family = AF_INET6;
911 } else if (dst->sin6_family != AF_INET6) {
913 return(EAFNOSUPPORT);
916 ret = rip6_output(m, so, dst, control);
920 struct pr_usrreqs rip6_usrreqs = {
921 .pru_abort = rip6_abort,
922 .pru_attach = rip6_attach,
923 .pru_bind = rip6_bind,
924 .pru_connect = rip6_connect,
925 .pru_control = in6_control,
926 .pru_detach = rip6_detach,
927 .pru_disconnect = rip6_disconnect,
928 .pru_peeraddr = in6_getpeeraddr,
929 .pru_send = rip6_send,
930 .pru_shutdown = rip6_shutdown,
931 .pru_sockaddr = in6_getsockaddr,
932 .pru_close = rip6_close,