mbr: convert to preprocessed source
[dragonfly.git] / sys / netinet6 / raw_ip6.c
blob9294184a257a94c374db89f732541b0981f07968
1 /*
2 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
3 * All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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
27 * SUCH DAMAGE.
29 * $FreeBSD: src/sys/netinet6/raw_ip6.c,v 1.7.2.7 2003/01/24 05:11:35 sam Exp $
30 * $DragonFly: src/sys/netinet6/raw_ip6.c,v 1.27 2008/09/04 09:08:22 hasso Exp $
34 * Copyright (c) 1982, 1986, 1988, 1993
35 * The Regents of the University of California. All rights reserved.
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 * 3. All advertising materials mentioning features or use of this software
46 * must display the following acknowledgement:
47 * This product includes software developed by the University of
48 * California, Berkeley and its contributors.
49 * 4. Neither the name of the University nor the names of its contributors
50 * may be used to endorse or promote products derived from this software
51 * without specific prior written permission.
53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
63 * SUCH DAMAGE.
65 * @(#)raw_ip.c 8.2 (Berkeley) 1/4/94
68 #include "opt_ipsec.h"
69 #include "opt_inet6.h"
71 #include <sys/param.h>
72 #include <sys/malloc.h>
73 #include <sys/proc.h>
74 #include <sys/priv.h>
75 #include <sys/mbuf.h>
76 #include <sys/socket.h>
77 #include <sys/jail.h>
78 #include <sys/protosw.h>
79 #include <sys/socketvar.h>
80 #include <sys/errno.h>
81 #include <sys/systm.h>
82 #include <sys/thread2.h>
84 #include <net/if.h>
85 #include <net/route.h>
86 #include <net/if_types.h>
88 #include <netinet/in.h>
89 #include <netinet/in_var.h>
90 #include <netinet/in_systm.h>
91 #include <netinet/ip6.h>
92 #include <netinet6/ip6_var.h>
93 #include <netinet6/ip6_mroute.h>
94 #include <netinet/icmp6.h>
95 #include <netinet/in_pcb.h>
96 #include <netinet6/in6_pcb.h>
97 #include <netinet6/nd6.h>
98 #include <netinet6/ip6protosw.h>
99 #ifdef ENABLE_DEFAULT_SCOPE
100 #include <netinet6/scope6_var.h>
101 #endif
102 #include <netinet6/raw_ip6.h>
104 #ifdef IPSEC
105 #include <netinet6/ipsec.h>
106 #include <netinet6/ipsec6.h>
107 #endif /*IPSEC*/
109 #ifdef FAST_IPSEC
110 #include <netproto/ipsec/ipsec.h>
111 #include <netproto/ipsec/ipsec6.h>
112 #endif /* FAST_IPSEC */
114 #include <machine/stdarg.h>
116 #define satosin6(sa) ((struct sockaddr_in6 *)(sa))
117 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
120 * Raw interface to IP6 protocol.
123 extern struct inpcbinfo ripcbinfo;
124 extern u_long rip_sendspace;
125 extern u_long rip_recvspace;
127 struct rip6stat rip6stat;
130 * Setup generic address and protocol structures
131 * for raw_input routine, then pass them along with
132 * mbuf chain.
135 rip6_input(struct mbuf **mp, int *offp, int proto)
137 struct mbuf *m = *mp;
138 struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *);
139 struct inpcb *in6p;
140 struct inpcb *last = 0;
141 struct mbuf *opts = NULL;
142 struct sockaddr_in6 rip6src;
144 rip6stat.rip6s_ipackets++;
146 if (faithprefix_p != NULL && (*faithprefix_p)(&ip6->ip6_dst)) {
147 /* XXX send icmp6 host/port unreach? */
148 m_freem(m);
149 return IPPROTO_DONE;
152 init_sin6(&rip6src, m); /* general init */
154 LIST_FOREACH(in6p, &ripcbinfo.pcblisthead, inp_list) {
155 if (in6p->in6p_flags & INP_PLACEMARKER)
156 continue;
157 if (!(in6p->in6p_vflag & INP_IPV6))
158 continue;
159 if (in6p->in6p_ip6_nxt &&
160 in6p->in6p_ip6_nxt != proto)
161 continue;
162 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr) &&
163 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &ip6->ip6_dst))
164 continue;
165 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr) &&
166 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, &ip6->ip6_src))
167 continue;
168 if (in6p->in6p_cksum != -1) {
169 rip6stat.rip6s_isum++;
170 if (in6_cksum(m, ip6->ip6_nxt, *offp,
171 m->m_pkthdr.len - *offp)) {
172 rip6stat.rip6s_badsum++;
173 continue;
176 if (last) {
177 struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
179 #ifdef IPSEC
181 * Check AH/ESP integrity.
183 if (n && ipsec6_in_reject_so(n, last->inp_socket)) {
184 m_freem(n);
185 ipsec6stat.in_polvio++;
186 /* do not inject data into pcb */
187 } else
188 #endif /*IPSEC*/
189 #ifdef FAST_IPSEC
191 * Check AH/ESP integrity.
193 if (n && ipsec6_in_reject(n, last)) {
194 m_freem(n);
195 /* do not inject data into pcb */
196 } else
197 #endif /*FAST_IPSEC*/
198 if (n) {
199 if (last->in6p_flags & IN6P_CONTROLOPTS ||
200 last->in6p_socket->so_options & SO_TIMESTAMP)
201 ip6_savecontrol(last, &opts, ip6, n);
202 /* strip intermediate headers */
203 m_adj(n, *offp);
204 if (ssb_appendaddr(&last->in6p_socket->so_rcv,
205 (struct sockaddr *)&rip6src,
206 n, opts) == 0) {
207 m_freem(n);
208 if (opts)
209 m_freem(opts);
210 rip6stat.rip6s_fullsock++;
211 } else
212 sorwakeup(last->in6p_socket);
213 opts = NULL;
216 last = in6p;
218 #ifdef IPSEC
220 * Check AH/ESP integrity.
222 if (last && ipsec6_in_reject_so(m, last->inp_socket)) {
223 m_freem(m);
224 ipsec6stat.in_polvio++;
225 ip6stat.ip6s_delivered--;
226 /* do not inject data into pcb */
227 } else
228 #endif /*IPSEC*/
229 #ifdef FAST_IPSEC
231 * Check AH/ESP integrity.
233 if (last && ipsec6_in_reject(m, last)) {
234 m_freem(m);
235 ip6stat.ip6s_delivered--;
236 /* do not inject data into pcb */
237 } else
238 #endif /*FAST_IPSEC*/
239 if (last) {
240 if (last->in6p_flags & IN6P_CONTROLOPTS ||
241 last->in6p_socket->so_options & SO_TIMESTAMP)
242 ip6_savecontrol(last, &opts, ip6, m);
243 /* strip intermediate headers */
244 m_adj(m, *offp);
245 if (ssb_appendaddr(&last->in6p_socket->so_rcv,
246 (struct sockaddr *)&rip6src, m, opts) == 0) {
247 m_freem(m);
248 if (opts)
249 m_freem(opts);
250 rip6stat.rip6s_fullsock++;
251 } else
252 sorwakeup(last->in6p_socket);
253 } else {
254 rip6stat.rip6s_nosock++;
255 if (m->m_flags & M_MCAST)
256 rip6stat.rip6s_nosockmcast++;
257 if (proto == IPPROTO_NONE)
258 m_freem(m);
259 else {
260 char *prvnxtp = ip6_get_prevhdr(m, *offp); /* XXX */
261 icmp6_error(m, ICMP6_PARAM_PROB,
262 ICMP6_PARAMPROB_NEXTHEADER,
263 prvnxtp - mtod(m, char *));
265 ip6stat.ip6s_delivered--;
267 return IPPROTO_DONE;
270 void
271 rip6_ctlinput(int cmd, struct sockaddr *sa, void *d)
273 struct ip6_hdr *ip6;
274 struct mbuf *m;
275 int off = 0;
276 struct ip6ctlparam *ip6cp = NULL;
277 const struct sockaddr_in6 *sa6_src = NULL;
278 void (*notify) (struct inpcb *, int) = in6_rtchange;
280 if (sa->sa_family != AF_INET6 ||
281 sa->sa_len != sizeof(struct sockaddr_in6))
282 return;
284 if ((unsigned)cmd >= PRC_NCMDS)
285 return;
286 if (PRC_IS_REDIRECT(cmd))
287 notify = in6_rtchange, d = NULL;
288 else if (cmd == PRC_HOSTDEAD)
289 d = NULL;
290 else if (inet6ctlerrmap[cmd] == 0)
291 return;
293 /* if the parameter is from icmp6, decode it. */
294 if (d != NULL) {
295 ip6cp = (struct ip6ctlparam *)d;
296 m = ip6cp->ip6c_m;
297 ip6 = ip6cp->ip6c_ip6;
298 off = ip6cp->ip6c_off;
299 sa6_src = ip6cp->ip6c_src;
300 } else {
301 m = NULL;
302 ip6 = NULL;
303 sa6_src = &sa6_any;
306 in6_pcbnotify(&ripcbinfo.pcblisthead, sa, 0,
307 (const struct sockaddr *)sa6_src, 0, cmd, 0, notify);
311 * Generate IPv6 header and pass packet to ip6_output.
312 * Tack on options user may have setup with control call.
315 rip6_output(struct mbuf *m, struct socket *so, ...)
317 struct sockaddr_in6 *dstsock;
318 struct mbuf *control;
319 struct in6_addr *dst;
320 struct ip6_hdr *ip6;
321 struct inpcb *in6p;
322 u_int plen = m->m_pkthdr.len;
323 int error = 0;
324 struct ip6_pktopts opt, *optp = 0;
325 struct ifnet *oifp = NULL;
326 int type = 0, code = 0; /* for ICMPv6 output statistics only */
327 int priv = 0;
328 __va_list ap;
330 __va_start(ap, so);
331 dstsock = __va_arg(ap, struct sockaddr_in6 *);
332 control = __va_arg(ap, struct mbuf *);
333 __va_end(ap);
335 in6p = so->so_pcb;
337 priv = 0;
338 if (so->so_cred->cr_uid == 0)
339 priv = 1;
340 dst = &dstsock->sin6_addr;
341 if (control) {
342 if ((error = ip6_setpktoptions(control, &opt,
343 in6p->in6p_outputopts,
344 so->so_proto->pr_protocol, priv)) != 0)
345 goto bad;
346 optp = &opt;
347 } else
348 optp = in6p->in6p_outputopts;
351 * For an ICMPv6 packet, we should know its type and code
352 * to update statistics.
354 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) {
355 struct icmp6_hdr *icmp6;
356 if (m->m_len < sizeof(struct icmp6_hdr) &&
357 (m = m_pullup(m, sizeof(struct icmp6_hdr))) == NULL) {
358 error = ENOBUFS;
359 goto bad;
361 icmp6 = mtod(m, struct icmp6_hdr *);
362 type = icmp6->icmp6_type;
363 code = icmp6->icmp6_code;
366 M_PREPEND(m, sizeof(*ip6), MB_WAIT);
367 ip6 = mtod(m, struct ip6_hdr *);
370 * Next header might not be ICMP6 but use its pseudo header anyway.
372 ip6->ip6_dst = *dst;
375 * If the scope of the destination is link-local, embed the interface
376 * index in the address.
378 * XXX advanced-api value overrides sin6_scope_id
380 if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst)) {
381 struct in6_pktinfo *pi;
384 * XXX Boundary check is assumed to be already done in
385 * ip6_setpktoptions().
387 if (optp && (pi = optp->ip6po_pktinfo) && pi->ipi6_ifindex) {
388 ip6->ip6_dst.s6_addr16[1] = htons(pi->ipi6_ifindex);
389 oifp = ifindex2ifnet[pi->ipi6_ifindex];
390 } else if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) &&
391 in6p->in6p_moptions &&
392 in6p->in6p_moptions->im6o_multicast_ifp) {
393 oifp = in6p->in6p_moptions->im6o_multicast_ifp;
394 ip6->ip6_dst.s6_addr16[1] = htons(oifp->if_index);
395 } else if (dstsock->sin6_scope_id) {
396 /* boundary check */
397 if (dstsock->sin6_scope_id < 0
398 || if_index < dstsock->sin6_scope_id) {
399 error = ENXIO; /* XXX EINVAL? */
400 goto bad;
402 ip6->ip6_dst.s6_addr16[1]
403 = htons(dstsock->sin6_scope_id & 0xffff);/*XXX*/
408 * Source address selection.
411 struct in6_addr *in6a;
413 if ((in6a = in6_selectsrc(dstsock, optp,
414 in6p->in6p_moptions,
415 &in6p->in6p_route,
416 &in6p->in6p_laddr,
417 &error, NULL)) == NULL) {
418 if (error == 0)
419 error = EADDRNOTAVAIL;
420 goto bad;
422 ip6->ip6_src = *in6a;
423 if (in6p->in6p_route.ro_rt)
424 oifp = ifindex2ifnet[in6p->in6p_route.ro_rt->rt_ifp->if_index];
426 ip6->ip6_flow = (ip6->ip6_flow & ~IPV6_FLOWINFO_MASK) |
427 (in6p->in6p_flowinfo & IPV6_FLOWINFO_MASK);
428 ip6->ip6_vfc = (ip6->ip6_vfc & ~IPV6_VERSION_MASK) |
429 (IPV6_VERSION & IPV6_VERSION_MASK);
430 /* ip6_plen will be filled in ip6_output, so not fill it here. */
431 ip6->ip6_nxt = in6p->in6p_ip6_nxt;
432 ip6->ip6_hlim = in6_selecthlim(in6p, oifp);
434 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6 ||
435 in6p->in6p_cksum != -1) {
436 struct mbuf *n;
437 int off;
438 u_int16_t *p;
440 /* compute checksum */
441 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6)
442 off = offsetof(struct icmp6_hdr, icmp6_cksum);
443 else
444 off = in6p->in6p_cksum;
445 if (plen < off + 1) {
446 error = EINVAL;
447 goto bad;
449 off += sizeof(struct ip6_hdr);
451 n = m;
452 while (n && n->m_len <= off) {
453 off -= n->m_len;
454 n = n->m_next;
456 if (!n)
457 goto bad;
458 p = (u_int16_t *)(mtod(n, caddr_t) + off);
459 *p = 0;
460 *p = in6_cksum(m, ip6->ip6_nxt, sizeof(*ip6), plen);
463 error = ip6_output(m, optp, &in6p->in6p_route, 0,
464 in6p->in6p_moptions, &oifp, in6p);
465 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) {
466 if (oifp)
467 icmp6_ifoutstat_inc(oifp, type, code);
468 icmp6stat.icp6s_outhist[type]++;
469 } else
470 rip6stat.rip6s_opackets++;
472 goto freectl;
474 bad:
475 if (m)
476 m_freem(m);
478 freectl:
479 if (optp == &opt && optp->ip6po_rthdr && optp->ip6po_route.ro_rt)
480 RTFREE(optp->ip6po_route.ro_rt);
481 if (control) {
482 if (optp == &opt)
483 ip6_clearpktopts(optp, -1);
484 m_freem(control);
486 return (error);
490 * Raw IPv6 socket option processing.
493 rip6_ctloutput(struct socket *so, struct sockopt *sopt)
495 int error;
497 if (sopt->sopt_level == IPPROTO_ICMPV6)
499 * XXX: is it better to call icmp6_ctloutput() directly
500 * from protosw?
502 return (icmp6_ctloutput(so, sopt));
503 else if (sopt->sopt_level != IPPROTO_IPV6)
504 return (EINVAL);
506 error = 0;
508 switch (sopt->sopt_dir) {
509 case SOPT_GET:
510 switch (sopt->sopt_name) {
511 case MRT6_INIT:
512 case MRT6_DONE:
513 case MRT6_ADD_MIF:
514 case MRT6_DEL_MIF:
515 case MRT6_ADD_MFC:
516 case MRT6_DEL_MFC:
517 case MRT6_PIM:
518 error = ip6_mrouter_get(so, sopt);
519 break;
520 case IPV6_CHECKSUM:
521 error = ip6_raw_ctloutput(so, sopt);
522 break;
523 default:
524 error = ip6_ctloutput(so, sopt);
525 break;
527 break;
529 case SOPT_SET:
530 switch (sopt->sopt_name) {
531 case MRT6_INIT:
532 case MRT6_DONE:
533 case MRT6_ADD_MIF:
534 case MRT6_DEL_MIF:
535 case MRT6_ADD_MFC:
536 case MRT6_DEL_MFC:
537 case MRT6_PIM:
538 error = ip6_mrouter_set(so, sopt);
539 break;
540 case IPV6_CHECKSUM:
541 error = ip6_raw_ctloutput(so, sopt);
542 break;
543 default:
544 error = ip6_ctloutput(so, sopt);
545 break;
547 break;
550 return (error);
553 static int
554 rip6_attach(struct socket *so, int proto, struct pru_attach_info *ai)
556 struct inpcb *inp;
557 int error;
558 int flag;
560 if (jailed(ai->p_ucred) && jail_allow_raw_sockets)
561 flag = NULL_CRED_OKAY | PRISON_ROOT;
562 else
563 flag = NULL_CRED_OKAY;
565 inp = so->so_pcb;
566 if (inp)
567 panic("rip6_attach");
568 if ((error = priv_check_cred(ai->p_ucred, PRIV_ROOT, flag)) != 0)
569 return error;
571 error = soreserve(so, rip_sendspace, rip_recvspace, ai->sb_rlimit);
572 if (error)
573 return error;
574 crit_enter();
575 error = in_pcballoc(so, &ripcbinfo);
576 crit_exit();
577 if (error)
578 return error;
579 inp = (struct inpcb *)so->so_pcb;
580 inp->inp_vflag |= INP_IPV6;
581 inp->in6p_ip6_nxt = (long)proto;
582 inp->in6p_hops = -1; /* use kernel default */
583 inp->in6p_cksum = -1;
584 MALLOC(inp->in6p_icmp6filt, struct icmp6_filter *,
585 sizeof(struct icmp6_filter), M_PCB, M_NOWAIT);
586 if (inp->in6p_icmp6filt != NULL)
587 ICMP6_FILTER_SETPASSALL(inp->in6p_icmp6filt);
588 return 0;
591 static int
592 rip6_detach(struct socket *so)
594 struct inpcb *inp;
596 inp = so->so_pcb;
597 if (inp == NULL)
598 panic("rip6_detach");
599 /* xxx: RSVP */
600 if (so == ip6_mrouter)
601 ip6_mrouter_done();
602 if (inp->in6p_icmp6filt) {
603 FREE(inp->in6p_icmp6filt, M_PCB);
604 inp->in6p_icmp6filt = NULL;
606 in6_pcbdetach(inp);
607 return 0;
610 static int
611 rip6_abort(struct socket *so)
613 soisdisconnected(so);
614 return rip6_detach(so);
617 static int
618 rip6_disconnect(struct socket *so)
620 struct inpcb *inp = so->so_pcb;
622 if (!(so->so_state & SS_ISCONNECTED))
623 return ENOTCONN;
624 inp->in6p_faddr = kin6addr_any;
625 return rip6_abort(so);
628 static int
629 rip6_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
631 struct inpcb *inp = so->so_pcb;
632 struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam;
633 struct ifaddr *ia = NULL;
635 if (nam->sa_len != sizeof(*addr))
636 return EINVAL;
638 if (TAILQ_EMPTY(&ifnet) || addr->sin6_family != AF_INET6)
639 return EADDRNOTAVAIL;
640 #ifdef ENABLE_DEFAULT_SCOPE
641 if (addr->sin6_scope_id == 0) { /* not change if specified */
642 addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr);
644 #endif
645 if (!IN6_IS_ADDR_UNSPECIFIED(&addr->sin6_addr) &&
646 (ia = ifa_ifwithaddr((struct sockaddr *)addr)) == NULL)
647 return EADDRNOTAVAIL;
648 if (ia &&
649 ((struct in6_ifaddr *)ia)->ia6_flags &
650 (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|
651 IN6_IFF_DETACHED|IN6_IFF_DEPRECATED)) {
652 return (EADDRNOTAVAIL);
654 inp->in6p_laddr = addr->sin6_addr;
655 return 0;
658 static int
659 rip6_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
661 struct inpcb *inp = so->so_pcb;
662 struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam;
663 struct in6_addr *in6a = NULL;
664 int error = 0;
665 #ifdef ENABLE_DEFAULT_SCOPE
666 struct sockaddr_in6 tmp;
667 #endif
669 if (nam->sa_len != sizeof(*addr))
670 return EINVAL;
671 if (TAILQ_EMPTY(&ifnet))
672 return EADDRNOTAVAIL;
673 if (addr->sin6_family != AF_INET6)
674 return EAFNOSUPPORT;
675 #ifdef ENABLE_DEFAULT_SCOPE
676 if (addr->sin6_scope_id == 0) { /* not change if specified */
677 /* avoid overwrites */
678 tmp = *addr;
679 addr = &tmp;
680 addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr);
682 #endif
683 /* Source address selection. XXX: need pcblookup? */
684 in6a = in6_selectsrc(addr, inp->in6p_outputopts,
685 inp->in6p_moptions, &inp->in6p_route,
686 &inp->in6p_laddr, &error, NULL);
687 if (in6a == NULL)
688 return (error ? error : EADDRNOTAVAIL);
689 inp->in6p_laddr = *in6a;
690 inp->in6p_faddr = addr->sin6_addr;
691 soisconnected(so);
692 return 0;
695 static int
696 rip6_shutdown(struct socket *so)
698 socantsendmore(so);
699 return 0;
702 static int
703 rip6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
704 struct mbuf *control, struct thread *td)
706 struct inpcb *inp = so->so_pcb;
707 struct sockaddr_in6 tmp;
708 struct sockaddr_in6 *dst;
710 /* always copy sockaddr to avoid overwrites */
711 if (so->so_state & SS_ISCONNECTED) {
712 if (nam) {
713 m_freem(m);
714 return EISCONN;
716 /* XXX */
717 bzero(&tmp, sizeof(tmp));
718 tmp.sin6_family = AF_INET6;
719 tmp.sin6_len = sizeof(struct sockaddr_in6);
720 bcopy(&inp->in6p_faddr, &tmp.sin6_addr,
721 sizeof(struct in6_addr));
722 dst = &tmp;
723 } else {
724 if (nam == NULL) {
725 m_freem(m);
726 return ENOTCONN;
728 tmp = *(struct sockaddr_in6 *)nam;
729 dst = &tmp;
731 #ifdef ENABLE_DEFAULT_SCOPE
732 if (dst->sin6_scope_id == 0) { /* not change if specified */
733 dst->sin6_scope_id = scope6_addr2default(&dst->sin6_addr);
735 #endif
736 return rip6_output(m, so, dst, control);
739 struct pr_usrreqs rip6_usrreqs = {
740 .pru_abort = rip6_abort,
741 .pru_accept = pru_accept_notsupp,
742 .pru_attach = rip6_attach,
743 .pru_bind = rip6_bind,
744 .pru_connect = rip6_connect,
745 .pru_connect2 = pru_connect2_notsupp,
746 .pru_control = in6_control,
747 .pru_detach = rip6_detach,
748 .pru_disconnect = rip6_disconnect,
749 .pru_listen = pru_listen_notsupp,
750 .pru_peeraddr = in6_setpeeraddr,
751 .pru_rcvd = pru_rcvd_notsupp,
752 .pru_rcvoob = pru_rcvoob_notsupp,
753 .pru_send = rip6_send,
754 .pru_sense = pru_sense_null,
755 .pru_shutdown = rip6_shutdown,
756 .pru_sockaddr = in6_setsockaddr,
757 .pru_sosend = sosend,
758 .pru_soreceive = soreceive,
759 .pru_sopoll = sopoll