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
29 * $FreeBSD: src/sys/netinet6/raw_ip6.c,v 1.7.2.7 2003/01/24 05:11:35 sam Exp $
33 * Copyright (c) 1982, 1986, 1988, 1993
34 * The Regents of the University of California. All rights reserved.
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 * 3. All advertising materials mentioning features or use of this software
45 * must display the following acknowledgement:
46 * This product includes software developed by the University of
47 * California, Berkeley and its contributors.
48 * 4. Neither the name of the University nor the names of its contributors
49 * may be used to endorse or promote products derived from this software
50 * without specific prior written permission.
52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
64 * @(#)raw_ip.c 8.2 (Berkeley) 1/4/94
67 #include "opt_ipsec.h"
68 #include "opt_inet6.h"
70 #include <sys/param.h>
71 #include <sys/malloc.h>
75 #include <sys/socket.h>
77 #include <sys/protosw.h>
78 #include <sys/socketvar.h>
79 #include <sys/errno.h>
80 #include <sys/systm.h>
82 #include <sys/thread2.h>
83 #include <sys/socketvar2.h>
84 #include <sys/msgport2.h>
87 #include <net/route.h>
88 #include <net/if_types.h>
90 #include <netinet/in.h>
91 #include <netinet/in_var.h>
92 #include <netinet/in_systm.h>
93 #include <netinet/ip6.h>
94 #include <netinet6/ip6_var.h>
95 #include <netinet6/ip6_mroute.h>
96 #include <netinet/icmp6.h>
97 #include <netinet/in_pcb.h>
98 #include <netinet6/in6_pcb.h>
99 #include <netinet6/nd6.h>
100 #include <netinet6/ip6protosw.h>
101 #ifdef ENABLE_DEFAULT_SCOPE
102 #include <netinet6/scope6_var.h>
104 #include <netinet6/raw_ip6.h>
107 #include <netinet6/ipsec.h>
108 #include <netinet6/ipsec6.h>
112 #include <netproto/ipsec/ipsec.h>
113 #include <netproto/ipsec/ipsec6.h>
114 #endif /* FAST_IPSEC */
116 #include <machine/stdarg.h>
118 #define satosin6(sa) ((struct sockaddr_in6 *)(sa))
119 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
122 * Raw interface to IP6 protocol.
125 extern struct inpcbinfo ripcbinfo;
126 extern u_long rip_sendspace;
127 extern u_long rip_recvspace;
129 struct rip6stat rip6stat;
132 * Setup generic address and protocol structures
133 * for raw_input routine, then pass them along with
137 rip6_input(struct mbuf **mp, int *offp, int proto)
139 struct mbuf *m = *mp;
140 struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *);
142 struct inpcb *last = NULL;
143 struct mbuf *opts = NULL;
144 struct sockaddr_in6 rip6src;
146 rip6stat.rip6s_ipackets++;
148 if (faithprefix_p != NULL && (*faithprefix_p)(&ip6->ip6_dst)) {
149 /* XXX send icmp6 host/port unreach? */
154 init_sin6(&rip6src, m); /* general init */
156 LIST_FOREACH(in6p, &ripcbinfo.pcblisthead, inp_list) {
157 if (in6p->in6p_flags & INP_PLACEMARKER)
159 if (!(in6p->in6p_vflag & INP_IPV6))
161 if (in6p->in6p_ip6_nxt &&
162 in6p->in6p_ip6_nxt != proto)
164 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr) &&
165 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &ip6->ip6_dst))
167 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr) &&
168 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, &ip6->ip6_src))
170 if (in6p->in6p_cksum != -1) {
171 rip6stat.rip6s_isum++;
172 if (in6_cksum(m, ip6->ip6_nxt, *offp,
173 m->m_pkthdr.len - *offp)) {
174 rip6stat.rip6s_badsum++;
179 struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
183 * Check AH/ESP integrity.
185 if (n && ipsec6_in_reject_so(n, last->inp_socket)) {
187 ipsec6stat.in_polvio++;
188 /* do not inject data into pcb */
193 * Check AH/ESP integrity.
195 if (n && ipsec6_in_reject(n, last)) {
197 /* do not inject data into pcb */
199 #endif /*FAST_IPSEC*/
203 so = last->in6p_socket;
204 if ((last->in6p_flags & IN6P_CONTROLOPTS) ||
205 (so->so_options & SO_TIMESTAMP)) {
206 ip6_savecontrol(last, &opts, ip6, n);
208 /* strip intermediate headers */
210 lwkt_gettoken(&so->so_rcv.ssb_token);
211 if (ssb_appendaddr(&so->so_rcv,
212 (struct sockaddr *)&rip6src,
217 rip6stat.rip6s_fullsock++;
221 lwkt_reltoken(&so->so_rcv.ssb_token);
229 * Check AH/ESP integrity.
231 if (last && ipsec6_in_reject_so(m, last->inp_socket)) {
233 ipsec6stat.in_polvio++;
234 ip6stat.ip6s_delivered--;
235 /* do not inject data into pcb */
240 * Check AH/ESP integrity.
242 if (last && ipsec6_in_reject(m, last)) {
244 ip6stat.ip6s_delivered--;
245 /* do not inject data into pcb */
247 #endif /*FAST_IPSEC*/
251 so = last->in6p_socket;
252 if ((last->in6p_flags & IN6P_CONTROLOPTS) ||
253 (so->so_options & SO_TIMESTAMP)) {
254 ip6_savecontrol(last, &opts, ip6, m);
256 /* strip intermediate headers */
258 lwkt_gettoken(&so->so_rcv.ssb_token);
259 if (ssb_appendaddr(&so->so_rcv, (struct sockaddr *)&rip6src,
264 rip6stat.rip6s_fullsock++;
268 lwkt_reltoken(&so->so_rcv.ssb_token);
270 rip6stat.rip6s_nosock++;
271 if (m->m_flags & M_MCAST)
272 rip6stat.rip6s_nosockmcast++;
273 if (proto == IPPROTO_NONE)
276 char *prvnxtp = ip6_get_prevhdr(m, *offp); /* XXX */
277 icmp6_error(m, ICMP6_PARAM_PROB,
278 ICMP6_PARAMPROB_NEXTHEADER,
279 prvnxtp - mtod(m, char *));
281 ip6stat.ip6s_delivered--;
287 rip6_ctlinput(netmsg_t msg)
289 int cmd = msg->ctlinput.nm_cmd;
290 struct sockaddr *sa = msg->ctlinput.nm_arg;
291 void *d = msg->ctlinput.nm_extra;
292 struct ip6ctlparam *ip6cp = NULL;
293 const struct sockaddr_in6 *sa6_src = NULL;
294 void (*notify) (struct inpcb *, int) = in6_rtchange;
296 if (sa->sa_family != AF_INET6 ||
297 sa->sa_len != sizeof(struct sockaddr_in6))
300 if ((unsigned)cmd >= PRC_NCMDS)
302 if (PRC_IS_REDIRECT(cmd))
303 notify = in6_rtchange, d = NULL;
304 else if (cmd == PRC_HOSTDEAD)
306 else if (inet6ctlerrmap[cmd] == 0)
309 /* if the parameter is from icmp6, decode it. */
311 ip6cp = (struct ip6ctlparam *)d;
312 sa6_src = ip6cp->ip6c_src;
317 in6_pcbnotify(&ripcbinfo.pcblisthead, sa, 0,
318 (const struct sockaddr *)sa6_src, 0, cmd, 0, notify);
320 lwkt_replymsg(&msg->ctlinput.base.lmsg, 0);
324 * Generate IPv6 header and pass packet to ip6_output.
325 * Tack on options user may have setup with control call.
328 rip6_output(struct mbuf *m, struct socket *so, ...)
330 struct sockaddr_in6 *dstsock;
331 struct mbuf *control;
332 struct in6_addr *dst;
335 u_int plen = m->m_pkthdr.len;
337 struct ip6_pktopts opt, *optp = NULL;
338 struct ifnet *oifp = NULL;
339 int type = 0, code = 0; /* for ICMPv6 output statistics only */
344 dstsock = __va_arg(ap, struct sockaddr_in6 *);
345 control = __va_arg(ap, struct mbuf *);
351 if (so->so_cred->cr_uid == 0)
353 dst = &dstsock->sin6_addr;
355 if ((error = ip6_setpktoptions(control, &opt,
356 in6p->in6p_outputopts,
357 so->so_proto->pr_protocol, priv)) != 0)
361 optp = in6p->in6p_outputopts;
364 * For an ICMPv6 packet, we should know its type and code
365 * to update statistics.
367 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) {
368 struct icmp6_hdr *icmp6;
369 if (m->m_len < sizeof(struct icmp6_hdr) &&
370 (m = m_pullup(m, sizeof(struct icmp6_hdr))) == NULL) {
374 icmp6 = mtod(m, struct icmp6_hdr *);
375 type = icmp6->icmp6_type;
376 code = icmp6->icmp6_code;
379 M_PREPEND(m, sizeof(*ip6), MB_WAIT);
380 ip6 = mtod(m, struct ip6_hdr *);
383 * Next header might not be ICMP6 but use its pseudo header anyway.
388 * If the scope of the destination is link-local, embed the interface
389 * index in the address.
391 * XXX advanced-api value overrides sin6_scope_id
393 if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst)) {
394 struct in6_pktinfo *pi;
397 * XXX Boundary check is assumed to be already done in
398 * ip6_setpktoptions().
400 if (optp && (pi = optp->ip6po_pktinfo) && pi->ipi6_ifindex) {
401 ip6->ip6_dst.s6_addr16[1] = htons(pi->ipi6_ifindex);
402 oifp = ifindex2ifnet[pi->ipi6_ifindex];
403 } else if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) &&
404 in6p->in6p_moptions &&
405 in6p->in6p_moptions->im6o_multicast_ifp) {
406 oifp = in6p->in6p_moptions->im6o_multicast_ifp;
407 ip6->ip6_dst.s6_addr16[1] = htons(oifp->if_index);
408 } else if (dstsock->sin6_scope_id) {
410 if (dstsock->sin6_scope_id < 0
411 || if_index < dstsock->sin6_scope_id) {
412 error = ENXIO; /* XXX EINVAL? */
415 ip6->ip6_dst.s6_addr16[1]
416 = htons(dstsock->sin6_scope_id & 0xffff);/*XXX*/
421 * Source address selection.
424 struct in6_addr *in6a;
426 if ((in6a = in6_selectsrc(dstsock, optp,
430 &error, NULL)) == NULL) {
432 error = EADDRNOTAVAIL;
435 ip6->ip6_src = *in6a;
436 if (in6p->in6p_route.ro_rt)
437 oifp = ifindex2ifnet[in6p->in6p_route.ro_rt->rt_ifp->if_index];
439 ip6->ip6_flow = (ip6->ip6_flow & ~IPV6_FLOWINFO_MASK) |
440 (in6p->in6p_flowinfo & IPV6_FLOWINFO_MASK);
441 ip6->ip6_vfc = (ip6->ip6_vfc & ~IPV6_VERSION_MASK) |
442 (IPV6_VERSION & IPV6_VERSION_MASK);
443 /* ip6_plen will be filled in ip6_output, so not fill it here. */
444 ip6->ip6_nxt = in6p->in6p_ip6_nxt;
445 ip6->ip6_hlim = in6_selecthlim(in6p, oifp);
447 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6 ||
448 in6p->in6p_cksum != -1) {
453 /* compute checksum */
454 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6)
455 off = offsetof(struct icmp6_hdr, icmp6_cksum);
457 off = in6p->in6p_cksum;
458 if (plen < off + 1) {
462 off += sizeof(struct ip6_hdr);
465 while (n && n->m_len <= off) {
471 p = (u_int16_t *)(mtod(n, caddr_t) + off);
473 *p = in6_cksum(m, ip6->ip6_nxt, sizeof(*ip6), plen);
476 error = ip6_output(m, optp, &in6p->in6p_route, 0,
477 in6p->in6p_moptions, &oifp, in6p);
478 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) {
480 icmp6_ifoutstat_inc(oifp, type, code);
481 icmp6stat.icp6s_outhist[type]++;
483 rip6stat.rip6s_opackets++;
492 if (optp == &opt && optp->ip6po_rthdr && optp->ip6po_route.ro_rt)
493 RTFREE(optp->ip6po_route.ro_rt);
496 ip6_clearpktopts(optp, -1);
503 * Raw IPv6 socket option processing.
506 rip6_ctloutput(netmsg_t msg)
508 struct socket *so = msg->ctloutput.base.nm_so;
509 struct sockopt *sopt = msg->ctloutput.nm_sopt;
512 if (sopt->sopt_level == IPPROTO_ICMPV6) {
514 * XXX: is it better to call icmp6_ctloutput() directly
517 icmp6_ctloutput(msg);
518 /* msg invalid now */
521 if (sopt->sopt_level != IPPROTO_IPV6) {
528 switch (sopt->sopt_dir) {
530 switch (sopt->sopt_name) {
538 error = ip6_mrouter_get(so, sopt);
541 error = ip6_raw_ctloutput(so, sopt);
544 error = ip6_ctloutput(so, sopt);
550 switch (sopt->sopt_name) {
558 error = ip6_mrouter_set(so, sopt);
561 error = ip6_raw_ctloutput(so, sopt);
564 error = ip6_ctloutput(so, sopt);
570 lwkt_replymsg(&msg->ctloutput.base.lmsg, error);
574 rip6_attach(netmsg_t msg)
576 struct socket *so = msg->attach.base.nm_so;
577 int proto = msg->attach.nm_proto;
578 struct pru_attach_info *ai = msg->attach.nm_ai;
584 panic("rip6_attach");
585 error = priv_check_cred(ai->p_ucred, PRIV_NETINET_RAW, NULL_CRED_OKAY);
589 error = soreserve(so, rip_sendspace, rip_recvspace, ai->sb_rlimit);
593 error = in_pcballoc(so, &ripcbinfo);
597 inp = (struct inpcb *)so->so_pcb;
598 inp->inp_vflag |= INP_IPV6;
599 inp->in6p_ip6_nxt = (long)proto;
600 inp->in6p_hops = -1; /* use kernel default */
601 inp->in6p_cksum = -1;
602 inp->in6p_icmp6filt = kmalloc(sizeof(struct icmp6_filter), M_PCB,
604 if (inp->in6p_icmp6filt != NULL)
605 ICMP6_FILTER_SETPASSALL(inp->in6p_icmp6filt);
608 lwkt_replymsg(&msg->attach.base.lmsg, error);
612 rip6_detach(netmsg_t msg)
614 struct socket *so = msg->detach.base.nm_so;
619 panic("rip6_detach");
621 if (so == ip6_mrouter)
623 if (inp->in6p_icmp6filt) {
624 kfree(inp->in6p_icmp6filt, M_PCB);
625 inp->in6p_icmp6filt = NULL;
628 lwkt_replymsg(&msg->detach.base.lmsg, 0);
632 * NOTE: (so) is referenced from soabort*() and netmsg_pru_abort()
633 * will sofree() it when we return.
636 rip6_abort(netmsg_t msg)
638 soisdisconnected(msg->abort.base.nm_so);
640 /* msg invalid now */
644 rip6_disconnect(netmsg_t msg)
646 struct socket *so = msg->disconnect.base.nm_so;
647 struct inpcb *inp = so->so_pcb;
649 if (so->so_state & SS_ISCONNECTED) {
650 inp->in6p_faddr = kin6addr_any;
653 /* msg invalid now */
657 lwkt_replymsg(&msg->disconnect.base.lmsg, ENOTCONN);
661 rip6_bind(netmsg_t msg)
663 struct socket *so = msg->bind.base.nm_so;
664 struct sockaddr *nam = msg->bind.nm_nam;
665 struct inpcb *inp = so->so_pcb;
666 struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam;
667 struct ifaddr *ia = NULL;
670 if (nam->sa_len != sizeof(*addr)) {
675 if (TAILQ_EMPTY(&ifnet) || addr->sin6_family != AF_INET6) {
676 error = EADDRNOTAVAIL;
679 #ifdef ENABLE_DEFAULT_SCOPE
680 if (addr->sin6_scope_id == 0) { /* not change if specified */
681 addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr);
684 if (!IN6_IS_ADDR_UNSPECIFIED(&addr->sin6_addr) &&
685 (ia = ifa_ifwithaddr((struct sockaddr *)addr)) == NULL) {
686 error = EADDRNOTAVAIL;
690 ((struct in6_ifaddr *)ia)->ia6_flags &
691 (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|
692 IN6_IFF_DETACHED|IN6_IFF_DEPRECATED)) {
693 error = EADDRNOTAVAIL;
696 inp->in6p_laddr = addr->sin6_addr;
699 lwkt_replymsg(&msg->bind.base.lmsg, error);
703 rip6_connect(netmsg_t msg)
705 struct socket *so = msg->connect.base.nm_so;
706 struct sockaddr *nam = msg->connect.nm_nam;
707 struct inpcb *inp = so->so_pcb;
708 struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam;
709 struct in6_addr *in6a = NULL;
711 #ifdef ENABLE_DEFAULT_SCOPE
712 struct sockaddr_in6 tmp;
715 if (nam->sa_len != sizeof(*addr)) {
719 if (TAILQ_EMPTY(&ifnet)) {
720 error = EADDRNOTAVAIL;
723 if (addr->sin6_family != AF_INET6) {
724 error = EAFNOSUPPORT;
727 #ifdef ENABLE_DEFAULT_SCOPE
728 if (addr->sin6_scope_id == 0) { /* not change if specified */
729 /* avoid overwrites */
732 addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr);
735 /* Source address selection. XXX: need pcblookup? */
736 in6a = in6_selectsrc(addr, inp->in6p_outputopts,
737 inp->in6p_moptions, &inp->in6p_route,
738 &inp->in6p_laddr, &error, NULL);
741 error = EADDRNOTAVAIL;
743 inp->in6p_laddr = *in6a;
744 inp->in6p_faddr = addr->sin6_addr;
749 lwkt_replymsg(&msg->connect.base.lmsg, error);
753 rip6_shutdown(netmsg_t msg)
755 socantsendmore(msg->shutdown.base.nm_so);
756 lwkt_replymsg(&msg->shutdown.base.lmsg, 0);
760 rip6_send(netmsg_t msg)
762 struct socket *so = msg->send.base.nm_so;
763 struct mbuf *m = msg->send.nm_m;
764 struct sockaddr *nam = msg->send.nm_addr;
765 struct mbuf *control = msg->send.nm_control;
766 struct inpcb *inp = so->so_pcb;
767 struct sockaddr_in6 tmp;
768 struct sockaddr_in6 *dst;
771 /* always copy sockaddr to avoid overwrites */
772 if (so->so_state & SS_ISCONNECTED) {
779 bzero(&tmp, sizeof(tmp));
780 tmp.sin6_family = AF_INET6;
781 tmp.sin6_len = sizeof(struct sockaddr_in6);
782 bcopy(&inp->in6p_faddr, &tmp.sin6_addr,
783 sizeof(struct in6_addr));
791 tmp = *(struct sockaddr_in6 *)nam;
794 #ifdef ENABLE_DEFAULT_SCOPE
795 if (dst->sin6_scope_id == 0) { /* not change if specified */
796 dst->sin6_scope_id = scope6_addr2default(&dst->sin6_addr);
799 error = rip6_output(m, so, dst, control);
801 lwkt_replymsg(&msg->send.base.lmsg, error);
804 struct pr_usrreqs rip6_usrreqs = {
805 .pru_abort = rip6_abort,
806 .pru_accept = pr_generic_notsupp,
807 .pru_attach = rip6_attach,
808 .pru_bind = rip6_bind,
809 .pru_connect = rip6_connect,
810 .pru_connect2 = pr_generic_notsupp,
811 .pru_control = in6_control_dispatch,
812 .pru_detach = rip6_detach,
813 .pru_disconnect = rip6_disconnect,
814 .pru_listen = pr_generic_notsupp,
815 .pru_peeraddr = in6_setpeeraddr_dispatch,
816 .pru_rcvd = pr_generic_notsupp,
817 .pru_rcvoob = pr_generic_notsupp,
818 .pru_send = rip6_send,
819 .pru_sense = pru_sense_null,
820 .pru_shutdown = rip6_shutdown,
821 .pru_sockaddr = in6_setsockaddr_dispatch,
822 .pru_sosend = sosend,
823 .pru_soreceive = soreceive