1 /*
2 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
3 * All rights reserved.
4 *
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.
16 *
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.
28 *
29 * $FreeBSD$
30 */
31
32 /*
33 * Copyright (c) 1982, 1986, 1988, 1993
34 * The Regents of the University of California. All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
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.
51 *
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
62 * SUCH DAMAGE.
63 *
64 * @(#)raw_ip.c 8.2 (Berkeley) 1/4/94
65 */
66
67 #include "opt_ipsec.h"
68 #include "opt_inet6.h"
69
70 #include <sys/param.h>
71 #include <sys/malloc.h>
72 #include <sys/proc.h>
73 #include <sys/mbuf.h>
74 #include <sys/socket.h>
75 #include <sys/protosw.h>
76 #include <sys/socketvar.h>
77 #include <sys/errno.h>
78 #include <sys/systm.h>
79
80 #include <net/if.h>
81 #include <net/route.h>
82 #include <net/if_types.h>
83
84 #include <netinet/in.h>
85 #include <netinet/in_var.h>
86 #include <netinet/in_systm.h>
87 #include <netinet/ip6.h>
88 #include <netinet6/ip6_var.h>
89 #include <netinet6/ip6_mroute.h>
90 #include <netinet/icmp6.h>
91 #include <netinet/in_pcb.h>
92 #include <netinet6/in6_pcb.h>
93 #include <netinet6/nd6.h>
94 #include <netinet6/ip6protosw.h>
95 #ifdef ENABLE_DEFAULT_SCOPE
96 #include <netinet6/scope6_var.h>
97 #endif
98 #include <netinet6/raw_ip6.h>
99
100 #ifdef IPSEC
101 #include <netinet6/ipsec.h>
102 #include <netinet6/ipsec6.h>
103 #endif /*IPSEC*/
104
105 #ifdef FAST_IPSEC
106 #include <netipsec/ipsec.h>
107 #include <netipsec/ipsec6.h>
108 #endif /* FAST_IPSEC */
109
110 #include <machine/stdarg.h>
111
112 #define satosin6(sa) ((struct sockaddr_in6 *)(sa))
113 #define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
114
115 /*
116 * Raw interface to IP6 protocol.
117 */
118
119 extern struct inpcbhead ripcb;
120 extern struct inpcbinfo ripcbinfo;
121 extern u_long rip_sendspace;
122 extern u_long rip_recvspace;
123
124 struct rip6stat rip6stat;
125
126 /*
127 * Setup generic address and protocol structures
128 * for raw_input routine, then pass them along with
129 * mbuf chain.
130 */
131 int
132 rip6_input(mp, offp, proto)
133 struct mbuf **mp;
134 int *offp, proto;
135 {
136 struct mbuf *m = *mp;
137 register struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *);
138 register struct inpcb *in6p;
139 struct inpcb *last = 0;
140 struct mbuf *opts = NULL;
141 struct sockaddr_in6 rip6src;
142
143 rip6stat.rip6s_ipackets++;
144
145 if (faithprefix_p != NULL && (*faithprefix_p)(&ip6->ip6_dst)) {
146 /* XXX send icmp6 host/port unreach? */
147 m_freem(m);
148 return IPPROTO_DONE;
149 }
150
151 init_sin6(&rip6src, m); /* general init */
152
153 LIST_FOREACH(in6p, &ripcb, inp_list) {
154 if ((in6p->in6p_vflag & INP_IPV6) == 0)
155 continue;
156 if (in6p->in6p_ip6_nxt &&
157 in6p->in6p_ip6_nxt != proto)
158 continue;
159 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr) &&
160 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &ip6->ip6_dst))
161 continue;
162 if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr) &&
163 !IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, &ip6->ip6_src))
164 continue;
165 if (in6p->in6p_cksum != -1) {
166 rip6stat.rip6s_isum++;
167 if (in6_cksum(m, ip6->ip6_nxt, *offp,
168 m->m_pkthdr.len - *offp)) {
169 rip6stat.rip6s_badsum++;
170 continue;
171 }
172 }
173 if (last) {
174 struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
175
176 #ifdef IPSEC
177 /*
178 * Check AH/ESP integrity.
179 */
180 if (n && ipsec6_in_reject_so(n, last->inp_socket)) {
181 m_freem(n);
182 ipsec6stat.in_polvio++;
183 /* do not inject data into pcb */
184 } else
185 #endif /*IPSEC*/
186 #ifdef FAST_IPSEC
187 /*
188 * Check AH/ESP integrity.
189 */
190 if (n && ipsec6_in_reject(n, last)) {
191 m_freem(n);
192 /* do not inject data into pcb */
193 } else
194 #endif /*FAST_IPSEC*/
195 if (n) {
196 if (last->in6p_flags & IN6P_CONTROLOPTS ||
197 last->in6p_socket->so_options & SO_TIMESTAMP)
198 ip6_savecontrol(last, &opts, ip6, n);
199 /* strip intermediate headers */
200 m_adj(n, *offp);
201 if (sbappendaddr(&last->in6p_socket->so_rcv,
202 (struct sockaddr *)&rip6src,
203 n, opts) == 0) {
204 m_freem(n);
205 if (opts)
206 m_freem(opts);
207 rip6stat.rip6s_fullsock++;
208 } else
209 sorwakeup(last->in6p_socket);
210 opts = NULL;
211 }
212 }
213 last = in6p;
214 }
215 #ifdef IPSEC
216 /*
217 * Check AH/ESP integrity.
218 */
219 if (last && ipsec6_in_reject_so(m, last->inp_socket)) {
220 m_freem(m);
221 ipsec6stat.in_polvio++;
222 ip6stat.ip6s_delivered--;
223 /* do not inject data into pcb */
224 } else
225 #endif /*IPSEC*/
226 #ifdef FAST_IPSEC
227 /*
228 * Check AH/ESP integrity.
229 */
230 if (last && ipsec6_in_reject(m, last)) {
231 m_freem(m);
232 ip6stat.ip6s_delivered--;
233 /* do not inject data into pcb */
234 } else
235 #endif /*FAST_IPSEC*/
236 if (last) {
237 if (last->in6p_flags & IN6P_CONTROLOPTS ||
238 last->in6p_socket->so_options & SO_TIMESTAMP)
239 ip6_savecontrol(last, &opts, ip6, m);
240 /* strip intermediate headers */
241 m_adj(m, *offp);
242 if (sbappendaddr(&last->in6p_socket->so_rcv,
243 (struct sockaddr *)&rip6src, m, opts) == 0) {
244 m_freem(m);
245 if (opts)
246 m_freem(opts);
247 rip6stat.rip6s_fullsock++;
248 } else
249 sorwakeup(last->in6p_socket);
250 } else {
251 rip6stat.rip6s_nosock++;
252 if (m->m_flags & M_MCAST)
253 rip6stat.rip6s_nosockmcast++;
254 if (proto == IPPROTO_NONE)
255 m_freem(m);
256 else {
257 char *prvnxtp = ip6_get_prevhdr(m, *offp); /* XXX */
258 icmp6_error(m, ICMP6_PARAM_PROB,
259 ICMP6_PARAMPROB_NEXTHEADER,
260 prvnxtp - mtod(m, char *));
261 }
262 ip6stat.ip6s_delivered--;
263 }
264 return IPPROTO_DONE;
265 }
266
267 void
268 rip6_ctlinput(cmd, sa, d)
269 int cmd;
270 struct sockaddr *sa;
271 void *d;
272 {
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) __P((struct inpcb *, int)) = in6_rtchange;
279
280 if (sa->sa_family != AF_INET6 ||
281 sa->sa_len != sizeof(struct sockaddr_in6))
282 return;
283
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;
292
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;
304 }
305
306 (void) in6_pcbnotify(&ripcb, sa, 0, (struct sockaddr *)sa6_src,
307 0, cmd, notify);
308 }
309
310 /*
311 * Generate IPv6 header and pass packet to ip6_output.
312 * Tack on options user may have setup with control call.
313 */
314 int
315 #if __STDC__
316 rip6_output(struct mbuf *m, ...)
317 #else
318 rip6_output(m, va_alist)
319 struct mbuf *m;
320 va_dcl
321 #endif
322 {
323 struct socket *so;
324 struct sockaddr_in6 *dstsock;
325 struct mbuf *control;
326 struct in6_addr *dst;
327 struct ip6_hdr *ip6;
328 struct inpcb *in6p;
329 u_int plen = m->m_pkthdr.len;
330 int error = 0;
331 struct ip6_pktopts opt, *optp = 0;
332 struct ifnet *oifp = NULL;
333 int type = 0, code = 0; /* for ICMPv6 output statistics only */
334 int priv = 0;
335 va_list ap;
336
337 va_start(ap, m);
338 so = va_arg(ap, struct socket *);
339 dstsock = va_arg(ap, struct sockaddr_in6 *);
340 control = va_arg(ap, struct mbuf *);
341 va_end(ap);
342
343 in6p = sotoin6pcb(so);
344
345 priv = 0;
346 if (so->so_cred->cr_uid == 0)
347 priv = 1;
348 dst = &dstsock->sin6_addr;
349 if (control) {
350 if ((error = ip6_setpktoptions(control, &opt, priv, 0)) != 0)
351 goto bad;
352 optp = &opt;
353 } else
354 optp = in6p->in6p_outputopts;
355
356 /*
357 * For an ICMPv6 packet, we should know its type and code
358 * to update statistics.
359 */
360 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) {
361 struct icmp6_hdr *icmp6;
362 if (m->m_len < sizeof(struct icmp6_hdr) &&
363 (m = m_pullup(m, sizeof(struct icmp6_hdr))) == NULL) {
364 error = ENOBUFS;
365 goto bad;
366 }
367 icmp6 = mtod(m, struct icmp6_hdr *);
368 type = icmp6->icmp6_type;
369 code = icmp6->icmp6_code;
370 }
371
372 M_PREPEND(m, sizeof(*ip6), M_WAIT);
373 ip6 = mtod(m, struct ip6_hdr *);
374
375 /*
376 * Next header might not be ICMP6 but use its pseudo header anyway.
377 */
378 ip6->ip6_dst = *dst;
379
380 /*
381 * If the scope of the destination is link-local, embed the interface
382 * index in the address.
383 *
384 * XXX advanced-api value overrides sin6_scope_id
385 */
386 if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst)) {
387 struct in6_pktinfo *pi;
388
389 /*
390 * XXX Boundary check is assumed to be already done in
391 * ip6_setpktoptions().
392 */
393 if (optp && (pi = optp->ip6po_pktinfo) && pi->ipi6_ifindex) {
394 ip6->ip6_dst.s6_addr16[1] = htons(pi->ipi6_ifindex);
395 oifp = ifindex2ifnet[pi->ipi6_ifindex];
396 } else if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) &&
397 in6p->in6p_moptions &&
398 in6p->in6p_moptions->im6o_multicast_ifp) {
399 oifp = in6p->in6p_moptions->im6o_multicast_ifp;
400 ip6->ip6_dst.s6_addr16[1] = htons(oifp->if_index);
401 } else if (dstsock->sin6_scope_id) {
402 /* boundary check */
403 if (dstsock->sin6_scope_id < 0
404 || if_index < dstsock->sin6_scope_id) {
405 error = ENXIO; /* XXX EINVAL? */
406 goto bad;
407 }
408 ip6->ip6_dst.s6_addr16[1]
409 = htons(dstsock->sin6_scope_id & 0xffff);/*XXX*/
410 }
411 }
412
413 /*
414 * Source address selection.
415 */
416 {
417 struct in6_addr *in6a;
418
419 if ((in6a = in6_selectsrc(dstsock, optp,
420 in6p->in6p_moptions,
421 &in6p->in6p_route,
422 &in6p->in6p_laddr,
423 &error)) == 0) {
424 if (error == 0)
425 error = EADDRNOTAVAIL;
426 goto bad;
427 }
428 ip6->ip6_src = *in6a;
429 if (in6p->in6p_route.ro_rt)
430 oifp = ifindex2ifnet[in6p->in6p_route.ro_rt->rt_ifp->if_index];
431 }
432 ip6->ip6_flow = (ip6->ip6_flow & ~IPV6_FLOWINFO_MASK) |
433 (in6p->in6p_flowinfo & IPV6_FLOWINFO_MASK);
434 ip6->ip6_vfc = (ip6->ip6_vfc & ~IPV6_VERSION_MASK) |
435 (IPV6_VERSION & IPV6_VERSION_MASK);
436 /* ip6_plen will be filled in ip6_output, so not fill it here. */
437 ip6->ip6_nxt = in6p->in6p_ip6_nxt;
438 ip6->ip6_hlim = in6_selecthlim(in6p, oifp);
439
440 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6 ||
441 in6p->in6p_cksum != -1) {
442 struct mbuf *n;
443 int off;
444 u_int16_t *p;
445
446 /* compute checksum */
447 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6)
448 off = offsetof(struct icmp6_hdr, icmp6_cksum);
449 else
450 off = in6p->in6p_cksum;
451 if (plen < off + 1) {
452 error = EINVAL;
453 goto bad;
454 }
455 off += sizeof(struct ip6_hdr);
456
457 n = m;
458 while (n && n->m_len <= off) {
459 off -= n->m_len;
460 n = n->m_next;
461 }
462 if (!n)
463 goto bad;
464 p = (u_int16_t *)(mtod(n, caddr_t) + off);
465 *p = 0;
466 *p = in6_cksum(m, ip6->ip6_nxt, sizeof(*ip6), plen);
467 }
468
469 error = ip6_output(m, optp, &in6p->in6p_route, 0,
470 in6p->in6p_moptions, &oifp, in6p);
471 if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) {
472 if (oifp)
473 icmp6_ifoutstat_inc(oifp, type, code);
474 icmp6stat.icp6s_outhist[type]++;
475 } else
476 rip6stat.rip6s_opackets++;
477
478 goto freectl;
479
480 bad:
481 if (m)
482 m_freem(m);
483
484 freectl:
485 if (optp == &opt && optp->ip6po_rthdr && optp->ip6po_route.ro_rt)
486 RTFREE(optp->ip6po_route.ro_rt);
487 if (control) {
488 if (optp == &opt)
489 ip6_clearpktopts(optp, 0, -1);
490 m_freem(control);
491 }
492 return(error);
493 }
494
495 /*
496 * Raw IPv6 socket option processing.
497 */
498 int
499 rip6_ctloutput(so, sopt)
500 struct socket *so;
501 struct sockopt *sopt;
502 {
503 int error;
504
505 if (sopt->sopt_level == IPPROTO_ICMPV6)
506 /*
507 * XXX: is it better to call icmp6_ctloutput() directly
508 * from protosw?
509 */
510 return(icmp6_ctloutput(so, sopt));
511 else if (sopt->sopt_level != IPPROTO_IPV6)
512 return (EINVAL);
513
514 error = 0;
515
516 switch (sopt->sopt_dir) {
517 case SOPT_GET:
518 switch (sopt->sopt_name) {
519 case MRT6_INIT:
520 case MRT6_DONE:
521 case MRT6_ADD_MIF:
522 case MRT6_DEL_MIF:
523 case MRT6_ADD_MFC:
524 case MRT6_DEL_MFC:
525 case MRT6_PIM:
526 error = ip6_mrouter_get(so, sopt);
527 break;
528 default:
529 error = ip6_ctloutput(so, sopt);
530 break;
531 }
532 break;
533
534 case SOPT_SET:
535 switch (sopt->sopt_name) {
536 case MRT6_INIT:
537 case MRT6_DONE:
538 case MRT6_ADD_MIF:
539 case MRT6_DEL_MIF:
540 case MRT6_ADD_MFC:
541 case MRT6_DEL_MFC:
542 case MRT6_PIM:
543 error = ip6_mrouter_set(so, sopt);
544 break;
545 default:
546 error = ip6_ctloutput(so, sopt);
547 break;
548 }
549 break;
550 }
551
552 return (error);
553 }
554
555 static int
556 rip6_attach(struct socket *so, int proto, struct proc *p)
557 {
558 struct inpcb *inp;
559 int error, s;
560
561 inp = sotoinpcb(so);
562 if (inp)
563 panic("rip6_attach");
564 if (p && (error = suser(p)) != 0)
565 return error;
566
567 error = soreserve(so, rip_sendspace, rip_recvspace);
568 if (error)
569 return error;
570 s = splnet();
571 error = in_pcballoc(so, &ripcbinfo, p);
572 splx(s);
573 if (error)
574 return error;
575 inp = (struct inpcb *)so->so_pcb;
576 inp->inp_vflag |= INP_IPV6;
577 inp->in6p_ip6_nxt = (long)proto;
578 inp->in6p_hops = -1; /* use kernel default */
579 inp->in6p_cksum = -1;
580 MALLOC(inp->in6p_icmp6filt, struct icmp6_filter *,
581 sizeof(struct icmp6_filter), M_PCB, M_NOWAIT);
582 ICMP6_FILTER_SETPASSALL(inp->in6p_icmp6filt);
583 return 0;
584 }
585
586 static int
587 rip6_detach(struct socket *so)
588 {
589 struct inpcb *inp;
590
591 inp = sotoinpcb(so);
592 if (inp == 0)
593 panic("rip6_detach");
594 /* xxx: RSVP */
595 if (so == ip6_mrouter)
596 ip6_mrouter_done();
597 if (inp->in6p_icmp6filt) {
598 FREE(inp->in6p_icmp6filt, M_PCB);
599 inp->in6p_icmp6filt = NULL;
600 }
601 in6_pcbdetach(inp);
602 return 0;
603 }
604
605 static int
606 rip6_abort(struct socket *so)
607 {
608 soisdisconnected(so);
609 return rip6_detach(so);
610 }
611
612 static int
613 rip6_disconnect(struct socket *so)
614 {
615 struct inpcb *inp = sotoinpcb(so);
616
617 if ((so->so_state & SS_ISCONNECTED) == 0)
618 return ENOTCONN;
619 inp->in6p_faddr = in6addr_any;
620 return rip6_abort(so);
621 }
622
623 static int
624 rip6_bind(struct socket *so, struct sockaddr *nam, struct proc *p)
625 {
626 struct inpcb *inp = sotoinpcb(so);
627 struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam;
628 struct ifaddr *ia = NULL;
629
630 if (nam->sa_len != sizeof(*addr))
631 return EINVAL;
632
633 if (TAILQ_EMPTY(&ifnet) || addr->sin6_family != AF_INET6)
634 return EADDRNOTAVAIL;
635 #ifdef ENABLE_DEFAULT_SCOPE
636 if (addr->sin6_scope_id == 0) { /* not change if specified */
637 addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr);
638 }
639 #endif
640 if (!IN6_IS_ADDR_UNSPECIFIED(&addr->sin6_addr) &&
641 (ia = ifa_ifwithaddr((struct sockaddr *)addr)) == 0)
642 return EADDRNOTAVAIL;
643 if (ia &&
644 ((struct in6_ifaddr *)ia)->ia6_flags &
645 (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|
646 IN6_IFF_DETACHED|IN6_IFF_DEPRECATED)) {
647 return(EADDRNOTAVAIL);
648 }
649 inp->in6p_laddr = addr->sin6_addr;
650 return 0;
651 }
652
653 static int
654 rip6_connect(struct socket *so, struct sockaddr *nam, struct proc *p)
655 {
656 struct inpcb *inp = sotoinpcb(so);
657 struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam;
658 struct in6_addr *in6a = NULL;
659 int error = 0;
660 #ifdef ENABLE_DEFAULT_SCOPE
661 struct sockaddr_in6 tmp;
662 #endif
663
664 if (nam->sa_len != sizeof(*addr))
665 return EINVAL;
666 if (TAILQ_EMPTY(&ifnet))
667 return EADDRNOTAVAIL;
668 if (addr->sin6_family != AF_INET6)
669 return EAFNOSUPPORT;
670 #ifdef ENABLE_DEFAULT_SCOPE
671 if (addr->sin6_scope_id == 0) { /* not change if specified */
672 /* avoid overwrites */
673 tmp = *addr;
674 addr = &tmp;
675 addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr);
676 }
677 #endif
678 /* Source address selection. XXX: need pcblookup? */
679 in6a = in6_selectsrc(addr, inp->in6p_outputopts,
680 inp->in6p_moptions, &inp->in6p_route,
681 &inp->in6p_laddr, &error);
682 if (in6a == NULL)
683 return (error ? error : EADDRNOTAVAIL);
684 inp->in6p_laddr = *in6a;
685 inp->in6p_faddr = addr->sin6_addr;
686 soisconnected(so);
687 return 0;
688 }
689
690 static int
691 rip6_shutdown(struct socket *so)
692 {
693 socantsendmore(so);
694 return 0;
695 }
696
697 static int
698 rip6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
699 struct mbuf *control, struct proc *p)
700 {
701 struct inpcb *inp = sotoinpcb(so);
702 struct sockaddr_in6 tmp;
703 struct sockaddr_in6 *dst;
704
705 /* always copy sockaddr to avoid overwrites */
706 if (so->so_state & SS_ISCONNECTED) {
707 if (nam) {
708 m_freem(m);
709 return EISCONN;
710 }
711 /* XXX */
712 bzero(&tmp, sizeof(tmp));
713 tmp.sin6_family = AF_INET6;
714 tmp.sin6_len = sizeof(struct sockaddr_in6);
715 bcopy(&inp->in6p_faddr, &tmp.sin6_addr,
716 sizeof(struct in6_addr));
717 dst = &tmp;
718 } else {
719 if (nam == NULL) {
720 m_freem(m);
721 return ENOTCONN;
722 }
723 tmp = *(struct sockaddr_in6 *)nam;
724 dst = &tmp;
725 }
726 #ifdef ENABLE_DEFAULT_SCOPE
727 if (dst->sin6_scope_id == 0) { /* not change if specified */
728 dst->sin6_scope_id = scope6_addr2default(&dst->sin6_addr);
729 }
730 #endif
731 return rip6_output(m, so, dst, control);
732 }
733
734 struct pr_usrreqs rip6_usrreqs = {
735 rip6_abort, pru_accept_notsupp, rip6_attach, rip6_bind, rip6_connect,
736 pru_connect2_notsupp, in6_control, rip6_detach, rip6_disconnect,
737 pru_listen_notsupp, in6_setpeeraddr, pru_rcvd_notsupp,
738 pru_rcvoob_notsupp, rip6_send, pru_sense_null, rip6_shutdown,
739 in6_setsockaddr, sosend, soreceive, sopoll
740 };
Cache object: fbf6af2dd795c59ce479a903e7334821
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