1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
5 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
6 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
10 *
11 * a) Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
13 *
14 * b) Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the distribution.
17 *
18 * c) Neither the name of Cisco Systems, Inc. nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
24 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32 * THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD: releng/12.0/sys/netinet6/sctp6_usrreq.c 337738 2018-08-14 08:33:47Z tuexen $");
37
38 #include <netinet/sctp_os.h>
39 #ifdef INET6
40 #include <sys/proc.h>
41 #include <netinet/sctp_pcb.h>
42 #include <netinet/sctp_header.h>
43 #include <netinet/sctp_var.h>
44 #include <netinet6/sctp6_var.h>
45 #include <netinet/sctp_sysctl.h>
46 #include <netinet/sctp_output.h>
47 #include <netinet/sctp_uio.h>
48 #include <netinet/sctp_asconf.h>
49 #include <netinet/sctputil.h>
50 #include <netinet/sctp_indata.h>
51 #include <netinet/sctp_timer.h>
52 #include <netinet/sctp_auth.h>
53 #include <netinet/sctp_input.h>
54 #include <netinet/sctp_output.h>
55 #include <netinet/sctp_bsd_addr.h>
56 #include <netinet/sctp_crc32.h>
57 #include <netinet/icmp6.h>
58 #include <netinet/udp.h>
59
60 extern struct protosw inetsw[];
61
62 int
63 sctp6_input_with_port(struct mbuf **i_pak, int *offp, uint16_t port)
64 {
65 struct mbuf *m;
66 int iphlen;
67 uint32_t vrf_id;
68 uint8_t ecn_bits;
69 struct sockaddr_in6 src, dst;
70 struct ip6_hdr *ip6;
71 struct sctphdr *sh;
72 struct sctp_chunkhdr *ch;
73 int length, offset;
74 uint8_t compute_crc;
75 uint32_t mflowid;
76 uint8_t mflowtype;
77 uint16_t fibnum;
78
79 iphlen = *offp;
80 if (SCTP_GET_PKT_VRFID(*i_pak, vrf_id)) {
81 SCTP_RELEASE_PKT(*i_pak);
82 return (IPPROTO_DONE);
83 }
84 m = SCTP_HEADER_TO_CHAIN(*i_pak);
85 #ifdef SCTP_MBUF_LOGGING
86 /* Log in any input mbufs */
87 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
88 sctp_log_mbc(m, SCTP_MBUF_INPUT);
89 }
90 #endif
91 #ifdef SCTP_PACKET_LOGGING
92 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LAST_PACKET_TRACING) {
93 sctp_packet_log(m);
94 }
95 #endif
96 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
97 "sctp6_input(): Packet of length %d received on %s with csum_flags 0x%b.\n",
98 m->m_pkthdr.len,
99 if_name(m->m_pkthdr.rcvif),
100 (int)m->m_pkthdr.csum_flags, CSUM_BITS);
101 mflowid = m->m_pkthdr.flowid;
102 mflowtype = M_HASHTYPE_GET(m);
103 fibnum = M_GETFIB(m);
104 SCTP_STAT_INCR(sctps_recvpackets);
105 SCTP_STAT_INCR_COUNTER64(sctps_inpackets);
106 /* Get IP, SCTP, and first chunk header together in the first mbuf. */
107 offset = iphlen + sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr);
108 ip6 = mtod(m, struct ip6_hdr *);
109 IP6_EXTHDR_GET(sh, struct sctphdr *, m, iphlen,
110 (int)(sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr)));
111 if (sh == NULL) {
112 SCTP_STAT_INCR(sctps_hdrops);
113 return (IPPROTO_DONE);
114 }
115 ch = (struct sctp_chunkhdr *)((caddr_t)sh + sizeof(struct sctphdr));
116 offset -= sizeof(struct sctp_chunkhdr);
117 memset(&src, 0, sizeof(struct sockaddr_in6));
118 src.sin6_family = AF_INET6;
119 src.sin6_len = sizeof(struct sockaddr_in6);
120 src.sin6_port = sh->src_port;
121 src.sin6_addr = ip6->ip6_src;
122 if (in6_setscope(&src.sin6_addr, m->m_pkthdr.rcvif, NULL) != 0) {
123 goto out;
124 }
125 memset(&dst, 0, sizeof(struct sockaddr_in6));
126 dst.sin6_family = AF_INET6;
127 dst.sin6_len = sizeof(struct sockaddr_in6);
128 dst.sin6_port = sh->dest_port;
129 dst.sin6_addr = ip6->ip6_dst;
130 if (in6_setscope(&dst.sin6_addr, m->m_pkthdr.rcvif, NULL) != 0) {
131 goto out;
132 }
133 length = ntohs(ip6->ip6_plen) + iphlen;
134 /* Validate mbuf chain length with IP payload length. */
135 if (SCTP_HEADER_LEN(m) != length) {
136 SCTPDBG(SCTP_DEBUG_INPUT1,
137 "sctp6_input() length:%d reported length:%d\n", length, SCTP_HEADER_LEN(m));
138 SCTP_STAT_INCR(sctps_hdrops);
139 goto out;
140 }
141 if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) {
142 goto out;
143 }
144 ecn_bits = ((ntohl(ip6->ip6_flow) >> 20) & 0x000000ff);
145 if (m->m_pkthdr.csum_flags & CSUM_SCTP_VALID) {
146 SCTP_STAT_INCR(sctps_recvhwcrc);
147 compute_crc = 0;
148 } else {
149 SCTP_STAT_INCR(sctps_recvswcrc);
150 compute_crc = 1;
151 }
152 sctp_common_input_processing(&m, iphlen, offset, length,
153 (struct sockaddr *)&src,
154 (struct sockaddr *)&dst,
155 sh, ch,
156 compute_crc,
157 ecn_bits,
158 mflowtype, mflowid, fibnum,
159 vrf_id, port);
160 out:
161 if (m) {
162 sctp_m_freem(m);
163 }
164 return (IPPROTO_DONE);
165 }
166
167
168 int
169 sctp6_input(struct mbuf **i_pak, int *offp, int proto SCTP_UNUSED)
170 {
171 return (sctp6_input_with_port(i_pak, offp, 0));
172 }
173
174 void
175 sctp6_notify(struct sctp_inpcb *inp,
176 struct sctp_tcb *stcb,
177 struct sctp_nets *net,
178 uint8_t icmp6_type,
179 uint8_t icmp6_code,
180 uint32_t next_mtu)
181 {
182 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
183 struct socket *so;
184 #endif
185 int timer_stopped;
186
187 switch (icmp6_type) {
188 case ICMP6_DST_UNREACH:
189 if ((icmp6_code == ICMP6_DST_UNREACH_NOROUTE) ||
190 (icmp6_code == ICMP6_DST_UNREACH_ADMIN) ||
191 (icmp6_code == ICMP6_DST_UNREACH_BEYONDSCOPE) ||
192 (icmp6_code == ICMP6_DST_UNREACH_ADDR)) {
193 /* Mark the net unreachable. */
194 if (net->dest_state & SCTP_ADDR_REACHABLE) {
195 /* Ok that destination is not reachable */
196 net->dest_state &= ~SCTP_ADDR_REACHABLE;
197 net->dest_state &= ~SCTP_ADDR_PF;
198 sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN,
199 stcb, 0, (void *)net, SCTP_SO_NOT_LOCKED);
200 }
201 }
202 SCTP_TCB_UNLOCK(stcb);
203 break;
204 case ICMP6_PARAM_PROB:
205 /* Treat it like an ABORT. */
206 if (icmp6_code == ICMP6_PARAMPROB_NEXTHEADER) {
207 sctp_abort_notification(stcb, 1, 0, NULL, SCTP_SO_NOT_LOCKED);
208 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
209 so = SCTP_INP_SO(inp);
210 atomic_add_int(&stcb->asoc.refcnt, 1);
211 SCTP_TCB_UNLOCK(stcb);
212 SCTP_SOCKET_LOCK(so, 1);
213 SCTP_TCB_LOCK(stcb);
214 atomic_subtract_int(&stcb->asoc.refcnt, 1);
215 #endif
216 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
217 SCTP_FROM_SCTP_USRREQ + SCTP_LOC_2);
218 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
219 SCTP_SOCKET_UNLOCK(so, 1);
220 #endif
221 } else {
222 SCTP_TCB_UNLOCK(stcb);
223 }
224 break;
225 case ICMP6_PACKET_TOO_BIG:
226 if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
227 SCTP_TCB_UNLOCK(stcb);
228 break;
229 }
230 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
231 timer_stopped = 1;
232 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
233 SCTP_FROM_SCTP_USRREQ + SCTP_LOC_1);
234 } else {
235 timer_stopped = 0;
236 }
237 /* Update the path MTU. */
238 if (net->port) {
239 next_mtu -= sizeof(struct udphdr);
240 }
241 if (net->mtu > next_mtu) {
242 net->mtu = next_mtu;
243 }
244 /* Update the association MTU */
245 if (stcb->asoc.smallest_mtu > next_mtu) {
246 sctp_pathmtu_adjustment(stcb, next_mtu);
247 }
248 /* Finally, start the PMTU timer if it was running before. */
249 if (timer_stopped) {
250 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
251 }
252 SCTP_TCB_UNLOCK(stcb);
253 break;
254 default:
255 SCTP_TCB_UNLOCK(stcb);
256 break;
257 }
258 }
259
260 void
261 sctp6_ctlinput(int cmd, struct sockaddr *pktdst, void *d)
262 {
263 struct ip6ctlparam *ip6cp;
264 struct sctp_inpcb *inp;
265 struct sctp_tcb *stcb;
266 struct sctp_nets *net;
267 struct sctphdr sh;
268 struct sockaddr_in6 src, dst;
269
270 if (pktdst->sa_family != AF_INET6 ||
271 pktdst->sa_len != sizeof(struct sockaddr_in6)) {
272 return;
273 }
274
275 if ((unsigned)cmd >= PRC_NCMDS) {
276 return;
277 }
278 if (PRC_IS_REDIRECT(cmd)) {
279 d = NULL;
280 } else if (inet6ctlerrmap[cmd] == 0) {
281 return;
282 }
283 /* If the parameter is from icmp6, decode it. */
284 if (d != NULL) {
285 ip6cp = (struct ip6ctlparam *)d;
286 } else {
287 ip6cp = (struct ip6ctlparam *)NULL;
288 }
289
290 if (ip6cp != NULL) {
291 /*
292 * XXX: We assume that when IPV6 is non NULL, M and OFF are
293 * valid.
294 */
295 if (ip6cp->ip6c_m == NULL) {
296 return;
297 }
298
299 /*
300 * Check if we can safely examine the ports and the
301 * verification tag of the SCTP common header.
302 */
303 if (ip6cp->ip6c_m->m_pkthdr.len <
304 (int32_t)(ip6cp->ip6c_off + offsetof(struct sctphdr, checksum))) {
305 return;
306 }
307
308 /* Copy out the port numbers and the verification tag. */
309 memset(&sh, 0, sizeof(sh));
310 m_copydata(ip6cp->ip6c_m,
311 ip6cp->ip6c_off,
312 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t),
313 (caddr_t)&sh);
314 memset(&src, 0, sizeof(struct sockaddr_in6));
315 src.sin6_family = AF_INET6;
316 src.sin6_len = sizeof(struct sockaddr_in6);
317 src.sin6_port = sh.src_port;
318 src.sin6_addr = ip6cp->ip6c_ip6->ip6_src;
319 if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
320 return;
321 }
322 memset(&dst, 0, sizeof(struct sockaddr_in6));
323 dst.sin6_family = AF_INET6;
324 dst.sin6_len = sizeof(struct sockaddr_in6);
325 dst.sin6_port = sh.dest_port;
326 dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst;
327 if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
328 return;
329 }
330 inp = NULL;
331 net = NULL;
332 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
333 (struct sockaddr *)&src,
334 &inp, &net, 1, SCTP_DEFAULT_VRFID);
335 if ((stcb != NULL) &&
336 (net != NULL) &&
337 (inp != NULL)) {
338 /* Check the verification tag */
339 if (ntohl(sh.v_tag) != 0) {
340 /*
341 * This must be the verification tag used
342 * for sending out packets. We don't
343 * consider packets reflecting the
344 * verification tag.
345 */
346 if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) {
347 SCTP_TCB_UNLOCK(stcb);
348 return;
349 }
350 } else {
351 if (ip6cp->ip6c_m->m_pkthdr.len >=
352 ip6cp->ip6c_off + sizeof(struct sctphdr) +
353 sizeof(struct sctp_chunkhdr) +
354 offsetof(struct sctp_init, a_rwnd)) {
355 /*
356 * In this case we can check if we
357 * got an INIT chunk and if the
358 * initiate tag matches.
359 */
360 uint32_t initiate_tag;
361 uint8_t chunk_type;
362
363 m_copydata(ip6cp->ip6c_m,
364 ip6cp->ip6c_off +
365 sizeof(struct sctphdr),
366 sizeof(uint8_t),
367 (caddr_t)&chunk_type);
368 m_copydata(ip6cp->ip6c_m,
369 ip6cp->ip6c_off +
370 sizeof(struct sctphdr) +
371 sizeof(struct sctp_chunkhdr),
372 sizeof(uint32_t),
373 (caddr_t)&initiate_tag);
374 if ((chunk_type != SCTP_INITIATION) ||
375 (ntohl(initiate_tag) != stcb->asoc.my_vtag)) {
376 SCTP_TCB_UNLOCK(stcb);
377 return;
378 }
379 } else {
380 SCTP_TCB_UNLOCK(stcb);
381 return;
382 }
383 }
384 sctp6_notify(inp, stcb, net,
385 ip6cp->ip6c_icmp6->icmp6_type,
386 ip6cp->ip6c_icmp6->icmp6_code,
387 ntohl(ip6cp->ip6c_icmp6->icmp6_mtu));
388 } else {
389 if ((stcb == NULL) && (inp != NULL)) {
390 /* reduce inp's ref-count */
391 SCTP_INP_WLOCK(inp);
392 SCTP_INP_DECR_REF(inp);
393 SCTP_INP_WUNLOCK(inp);
394 }
395 if (stcb) {
396 SCTP_TCB_UNLOCK(stcb);
397 }
398 }
399 }
400 }
401
402 /*
403 * this routine can probably be collasped into the one in sctp_userreq.c
404 * since they do the same thing and now we lookup with a sockaddr
405 */
406 static int
407 sctp6_getcred(SYSCTL_HANDLER_ARGS)
408 {
409 struct xucred xuc;
410 struct sockaddr_in6 addrs[2];
411 struct sctp_inpcb *inp;
412 struct sctp_nets *net;
413 struct sctp_tcb *stcb;
414 int error;
415 uint32_t vrf_id;
416
417 vrf_id = SCTP_DEFAULT_VRFID;
418
419 error = priv_check(req->td, PRIV_NETINET_GETCRED);
420 if (error)
421 return (error);
422
423 if (req->newlen != sizeof(addrs)) {
424 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
425 return (EINVAL);
426 }
427 if (req->oldlen != sizeof(struct ucred)) {
428 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
429 return (EINVAL);
430 }
431 error = SYSCTL_IN(req, addrs, sizeof(addrs));
432 if (error)
433 return (error);
434
435 stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[1]),
436 sin6tosa(&addrs[0]),
437 &inp, &net, 1, vrf_id);
438 if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) {
439 if ((inp != NULL) && (stcb == NULL)) {
440 /* reduce ref-count */
441 SCTP_INP_WLOCK(inp);
442 SCTP_INP_DECR_REF(inp);
443 goto cred_can_cont;
444 }
445 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
446 error = ENOENT;
447 goto out;
448 }
449 SCTP_TCB_UNLOCK(stcb);
450 /*
451 * We use the write lock here, only since in the error leg we need
452 * it. If we used RLOCK, then we would have to
453 * wlock/decr/unlock/rlock. Which in theory could create a hole.
454 * Better to use higher wlock.
455 */
456 SCTP_INP_WLOCK(inp);
457 cred_can_cont:
458 error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket);
459 if (error) {
460 SCTP_INP_WUNLOCK(inp);
461 goto out;
462 }
463 cru2x(inp->sctp_socket->so_cred, &xuc);
464 SCTP_INP_WUNLOCK(inp);
465 error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred));
466 out:
467 return (error);
468 }
469
470 SYSCTL_PROC(_net_inet6_sctp6, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW,
471 0, 0,
472 sctp6_getcred, "S,ucred", "Get the ucred of a SCTP6 connection");
473
474
475 /* This is the same as the sctp_abort() could be made common */
476 static void
477 sctp6_abort(struct socket *so)
478 {
479 struct sctp_inpcb *inp;
480 uint32_t flags;
481
482 inp = (struct sctp_inpcb *)so->so_pcb;
483 if (inp == NULL) {
484 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
485 return;
486 }
487 sctp_must_try_again:
488 flags = inp->sctp_flags;
489 #ifdef SCTP_LOG_CLOSING
490 sctp_log_closing(inp, NULL, 17);
491 #endif
492 if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
493 (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
494 #ifdef SCTP_LOG_CLOSING
495 sctp_log_closing(inp, NULL, 16);
496 #endif
497 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
498 SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
499 SOCK_LOCK(so);
500 SCTP_SB_CLEAR(so->so_snd);
501 /*
502 * same for the rcv ones, they are only here for the
503 * accounting/select.
504 */
505 SCTP_SB_CLEAR(so->so_rcv);
506 /* Now null out the reference, we are completely detached. */
507 so->so_pcb = NULL;
508 SOCK_UNLOCK(so);
509 } else {
510 flags = inp->sctp_flags;
511 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
512 goto sctp_must_try_again;
513 }
514 }
515 return;
516 }
517
518 static int
519 sctp6_attach(struct socket *so, int proto SCTP_UNUSED, struct thread *p SCTP_UNUSED)
520 {
521 struct in6pcb *inp6;
522 int error;
523 struct sctp_inpcb *inp;
524 uint32_t vrf_id = SCTP_DEFAULT_VRFID;
525
526 inp = (struct sctp_inpcb *)so->so_pcb;
527 if (inp != NULL) {
528 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
529 return (EINVAL);
530 }
531
532 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
533 error = SCTP_SORESERVE(so, SCTP_BASE_SYSCTL(sctp_sendspace), SCTP_BASE_SYSCTL(sctp_recvspace));
534 if (error)
535 return (error);
536 }
537 error = sctp_inpcb_alloc(so, vrf_id);
538 if (error)
539 return (error);
540 inp = (struct sctp_inpcb *)so->so_pcb;
541 SCTP_INP_WLOCK(inp);
542 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUND_V6; /* I'm v6! */
543 inp6 = (struct in6pcb *)inp;
544
545 inp6->inp_vflag |= INP_IPV6;
546 inp6->in6p_hops = -1; /* use kernel default */
547 inp6->in6p_cksum = -1; /* just to be sure */
548 #ifdef INET
549 /*
550 * XXX: ugly!! IPv4 TTL initialization is necessary for an IPv6
551 * socket as well, because the socket may be bound to an IPv6
552 * wildcard address, which may match an IPv4-mapped IPv6 address.
553 */
554 inp6->inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
555 #endif
556 SCTP_INP_WUNLOCK(inp);
557 return (0);
558 }
559
560 static int
561 sctp6_bind(struct socket *so, struct sockaddr *addr, struct thread *p)
562 {
563 struct sctp_inpcb *inp;
564 struct in6pcb *inp6;
565 int error;
566
567 inp = (struct sctp_inpcb *)so->so_pcb;
568 if (inp == NULL) {
569 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
570 return (EINVAL);
571 }
572
573 if (addr) {
574 switch (addr->sa_family) {
575 #ifdef INET
576 case AF_INET:
577 if (addr->sa_len != sizeof(struct sockaddr_in)) {
578 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
579 return (EINVAL);
580 }
581 break;
582 #endif
583 #ifdef INET6
584 case AF_INET6:
585 if (addr->sa_len != sizeof(struct sockaddr_in6)) {
586 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
587 return (EINVAL);
588 }
589 break;
590 #endif
591 default:
592 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
593 return (EINVAL);
594 }
595 }
596 inp6 = (struct in6pcb *)inp;
597 inp6->inp_vflag &= ~INP_IPV4;
598 inp6->inp_vflag |= INP_IPV6;
599 if ((addr != NULL) && (SCTP_IPV6_V6ONLY(inp6) == 0)) {
600 switch (addr->sa_family) {
601 #ifdef INET
602 case AF_INET:
603 /* binding v4 addr to v6 socket, so reset flags */
604 inp6->inp_vflag |= INP_IPV4;
605 inp6->inp_vflag &= ~INP_IPV6;
606 break;
607 #endif
608 #ifdef INET6
609 case AF_INET6:
610 {
611 struct sockaddr_in6 *sin6_p;
612
613 sin6_p = (struct sockaddr_in6 *)addr;
614
615 if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr)) {
616 inp6->inp_vflag |= INP_IPV4;
617 }
618 #ifdef INET
619 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) {
620 struct sockaddr_in sin;
621
622 in6_sin6_2_sin(&sin, sin6_p);
623 inp6->inp_vflag |= INP_IPV4;
624 inp6->inp_vflag &= ~INP_IPV6;
625 error = sctp_inpcb_bind(so, (struct sockaddr *)&sin, NULL, p);
626 return (error);
627 }
628 #endif
629 break;
630 }
631 #endif
632 default:
633 break;
634 }
635 } else if (addr != NULL) {
636 struct sockaddr_in6 *sin6_p;
637
638 /* IPV6_V6ONLY socket */
639 #ifdef INET
640 if (addr->sa_family == AF_INET) {
641 /* can't bind v4 addr to v6 only socket! */
642 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
643 return (EINVAL);
644 }
645 #endif
646 sin6_p = (struct sockaddr_in6 *)addr;
647
648 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) {
649 /* can't bind v4-mapped addrs either! */
650 /* NOTE: we don't support SIIT */
651 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
652 return (EINVAL);
653 }
654 }
655 error = sctp_inpcb_bind(so, addr, NULL, p);
656 return (error);
657 }
658
659
660 static void
661 sctp6_close(struct socket *so)
662 {
663 sctp_close(so);
664 }
665
666 /* This could be made common with sctp_detach() since they are identical */
667
668 static
669 int
670 sctp6_disconnect(struct socket *so)
671 {
672 return (sctp_disconnect(so));
673 }
674
675
676 int
677 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
678 struct mbuf *control, struct thread *p);
679
680
681 static int
682 sctp6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
683 struct mbuf *control, struct thread *p)
684 {
685 struct sctp_inpcb *inp;
686 struct in6pcb *inp6;
687
688 #ifdef INET
689 struct sockaddr_in6 *sin6;
690 #endif /* INET */
691 /* No SPL needed since sctp_output does this */
692
693 inp = (struct sctp_inpcb *)so->so_pcb;
694 if (inp == NULL) {
695 if (control) {
696 SCTP_RELEASE_PKT(control);
697 control = NULL;
698 }
699 SCTP_RELEASE_PKT(m);
700 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
701 return (EINVAL);
702 }
703 inp6 = (struct in6pcb *)inp;
704 /*
705 * For the TCP model we may get a NULL addr, if we are a connected
706 * socket thats ok.
707 */
708 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) &&
709 (addr == NULL)) {
710 goto connected_type;
711 }
712 if (addr == NULL) {
713 SCTP_RELEASE_PKT(m);
714 if (control) {
715 SCTP_RELEASE_PKT(control);
716 control = NULL;
717 }
718 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EDESTADDRREQ);
719 return (EDESTADDRREQ);
720 }
721 #ifdef INET
722 sin6 = (struct sockaddr_in6 *)addr;
723 if (SCTP_IPV6_V6ONLY(inp6)) {
724 /*
725 * if IPV6_V6ONLY flag, we discard datagrams destined to a
726 * v4 addr or v4-mapped addr
727 */
728 if (addr->sa_family == AF_INET) {
729 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
730 return (EINVAL);
731 }
732 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
733 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
734 return (EINVAL);
735 }
736 }
737 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
738 struct sockaddr_in sin;
739
740 /* convert v4-mapped into v4 addr and send */
741 in6_sin6_2_sin(&sin, sin6);
742 return (sctp_sendm(so, flags, m, (struct sockaddr *)&sin, control, p));
743 }
744 #endif /* INET */
745 connected_type:
746 /* now what about control */
747 if (control) {
748 if (inp->control) {
749 SCTP_PRINTF("huh? control set?\n");
750 SCTP_RELEASE_PKT(inp->control);
751 inp->control = NULL;
752 }
753 inp->control = control;
754 }
755 /* Place the data */
756 if (inp->pkt) {
757 SCTP_BUF_NEXT(inp->pkt_last) = m;
758 inp->pkt_last = m;
759 } else {
760 inp->pkt_last = inp->pkt = m;
761 }
762 if (
763 /* FreeBSD and MacOSX uses a flag passed */
764 ((flags & PRUS_MORETOCOME) == 0)
765 ) {
766 /*
767 * note with the current version this code will only be used
768 * by OpenBSD, NetBSD and FreeBSD have methods for
769 * re-defining sosend() to use sctp_sosend(). One can
770 * optionaly switch back to this code (by changing back the
771 * defininitions but this is not advisable.
772 */
773 int ret;
774
775 ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags);
776 inp->pkt = NULL;
777 inp->control = NULL;
778 return (ret);
779 } else {
780 return (0);
781 }
782 }
783
784 static int
785 sctp6_connect(struct socket *so, struct sockaddr *addr, struct thread *p)
786 {
787 uint32_t vrf_id;
788 int error = 0;
789 struct sctp_inpcb *inp;
790 struct sctp_tcb *stcb;
791 #ifdef INET
792 struct in6pcb *inp6;
793 struct sockaddr_in6 *sin6;
794 union sctp_sockstore store;
795 #endif
796
797 #ifdef INET
798 inp6 = (struct in6pcb *)so->so_pcb;
799 #endif
800 inp = (struct sctp_inpcb *)so->so_pcb;
801 if (inp == NULL) {
802 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET);
803 return (ECONNRESET); /* I made the same as TCP since we are
804 * not setup? */
805 }
806 if (addr == NULL) {
807 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
808 return (EINVAL);
809 }
810 switch (addr->sa_family) {
811 #ifdef INET
812 case AF_INET:
813 if (addr->sa_len != sizeof(struct sockaddr_in)) {
814 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
815 return (EINVAL);
816 }
817 break;
818 #endif
819 #ifdef INET6
820 case AF_INET6:
821 if (addr->sa_len != sizeof(struct sockaddr_in6)) {
822 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
823 return (EINVAL);
824 }
825 break;
826 #endif
827 default:
828 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
829 return (EINVAL);
830 }
831
832 vrf_id = inp->def_vrf_id;
833 SCTP_ASOC_CREATE_LOCK(inp);
834 SCTP_INP_RLOCK(inp);
835 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
836 SCTP_PCB_FLAGS_UNBOUND) {
837 /* Bind a ephemeral port */
838 SCTP_INP_RUNLOCK(inp);
839 error = sctp6_bind(so, NULL, p);
840 if (error) {
841 SCTP_ASOC_CREATE_UNLOCK(inp);
842
843 return (error);
844 }
845 SCTP_INP_RLOCK(inp);
846 }
847 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
848 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
849 /* We are already connected AND the TCP model */
850 SCTP_INP_RUNLOCK(inp);
851 SCTP_ASOC_CREATE_UNLOCK(inp);
852 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EADDRINUSE);
853 return (EADDRINUSE);
854 }
855 #ifdef INET
856 sin6 = (struct sockaddr_in6 *)addr;
857 if (SCTP_IPV6_V6ONLY(inp6)) {
858 /*
859 * if IPV6_V6ONLY flag, ignore connections destined to a v4
860 * addr or v4-mapped addr
861 */
862 if (addr->sa_family == AF_INET) {
863 SCTP_INP_RUNLOCK(inp);
864 SCTP_ASOC_CREATE_UNLOCK(inp);
865 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
866 return (EINVAL);
867 }
868 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
869 SCTP_INP_RUNLOCK(inp);
870 SCTP_ASOC_CREATE_UNLOCK(inp);
871 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
872 return (EINVAL);
873 }
874 }
875 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
876 /* convert v4-mapped into v4 addr */
877 in6_sin6_2_sin(&store.sin, sin6);
878 addr = &store.sa;
879 }
880 #endif /* INET */
881 /* Now do we connect? */
882 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
883 stcb = LIST_FIRST(&inp->sctp_asoc_list);
884 if (stcb) {
885 SCTP_TCB_LOCK(stcb);
886 }
887 SCTP_INP_RUNLOCK(inp);
888 } else {
889 SCTP_INP_RUNLOCK(inp);
890 SCTP_INP_WLOCK(inp);
891 SCTP_INP_INCR_REF(inp);
892 SCTP_INP_WUNLOCK(inp);
893 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL);
894 if (stcb == NULL) {
895 SCTP_INP_WLOCK(inp);
896 SCTP_INP_DECR_REF(inp);
897 SCTP_INP_WUNLOCK(inp);
898 }
899 }
900
901 if (stcb != NULL) {
902 /* Already have or am bring up an association */
903 SCTP_ASOC_CREATE_UNLOCK(inp);
904 SCTP_TCB_UNLOCK(stcb);
905 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EALREADY);
906 return (EALREADY);
907 }
908 /* We are GOOD to go */
909 stcb = sctp_aloc_assoc(inp, addr, &error, 0, vrf_id,
910 inp->sctp_ep.pre_open_stream_count,
911 inp->sctp_ep.port, p);
912 SCTP_ASOC_CREATE_UNLOCK(inp);
913 if (stcb == NULL) {
914 /* Gak! no memory */
915 return (error);
916 }
917 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
918 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
919 /* Set the connected flag so we can queue data */
920 soisconnecting(so);
921 }
922 SCTP_SET_STATE(stcb, SCTP_STATE_COOKIE_WAIT);
923 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
924
925 /* initialize authentication parameters for the assoc */
926 sctp_initialize_auth_params(inp, stcb);
927
928 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
929 SCTP_TCB_UNLOCK(stcb);
930 return (error);
931 }
932
933 static int
934 sctp6_getaddr(struct socket *so, struct sockaddr **addr)
935 {
936 struct sockaddr_in6 *sin6;
937 struct sctp_inpcb *inp;
938 uint32_t vrf_id;
939 struct sctp_ifa *sctp_ifa;
940
941 int error;
942
943 /*
944 * Do the malloc first in case it blocks.
945 */
946 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof(*sin6));
947 if (sin6 == NULL)
948 return (ENOMEM);
949 sin6->sin6_family = AF_INET6;
950 sin6->sin6_len = sizeof(*sin6);
951
952 inp = (struct sctp_inpcb *)so->so_pcb;
953 if (inp == NULL) {
954 SCTP_FREE_SONAME(sin6);
955 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET);
956 return (ECONNRESET);
957 }
958 SCTP_INP_RLOCK(inp);
959 sin6->sin6_port = inp->sctp_lport;
960 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
961 /* For the bound all case you get back 0 */
962 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
963 struct sctp_tcb *stcb;
964 struct sockaddr_in6 *sin_a6;
965 struct sctp_nets *net;
966 int fnd;
967
968 stcb = LIST_FIRST(&inp->sctp_asoc_list);
969 if (stcb == NULL) {
970 SCTP_INP_RUNLOCK(inp);
971 SCTP_FREE_SONAME(sin6);
972 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
973 return (ENOENT);
974 }
975 fnd = 0;
976 sin_a6 = NULL;
977 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
978 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr;
979 if (sin_a6 == NULL)
980 /* this will make coverity happy */
981 continue;
982
983 if (sin_a6->sin6_family == AF_INET6) {
984 fnd = 1;
985 break;
986 }
987 }
988 if ((!fnd) || (sin_a6 == NULL)) {
989 /* punt */
990 SCTP_INP_RUNLOCK(inp);
991 SCTP_FREE_SONAME(sin6);
992 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
993 return (ENOENT);
994 }
995 vrf_id = inp->def_vrf_id;
996 sctp_ifa = sctp_source_address_selection(inp, stcb, (sctp_route_t *)&net->ro, net, 0, vrf_id);
997 if (sctp_ifa) {
998 sin6->sin6_addr = sctp_ifa->address.sin6.sin6_addr;
999 }
1000 } else {
1001 /* For the bound all case you get back 0 */
1002 memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr));
1003 }
1004 } else {
1005 /* Take the first IPv6 address in the list */
1006 struct sctp_laddr *laddr;
1007 int fnd = 0;
1008
1009 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1010 if (laddr->ifa->address.sa.sa_family == AF_INET6) {
1011 struct sockaddr_in6 *sin_a;
1012
1013 sin_a = &laddr->ifa->address.sin6;
1014 sin6->sin6_addr = sin_a->sin6_addr;
1015 fnd = 1;
1016 break;
1017 }
1018 }
1019 if (!fnd) {
1020 SCTP_FREE_SONAME(sin6);
1021 SCTP_INP_RUNLOCK(inp);
1022 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
1023 return (ENOENT);
1024 }
1025 }
1026 SCTP_INP_RUNLOCK(inp);
1027 /* Scoping things for v6 */
1028 if ((error = sa6_recoverscope(sin6)) != 0) {
1029 SCTP_FREE_SONAME(sin6);
1030 return (error);
1031 }
1032 (*addr) = (struct sockaddr *)sin6;
1033 return (0);
1034 }
1035
1036 static int
1037 sctp6_peeraddr(struct socket *so, struct sockaddr **addr)
1038 {
1039 struct sockaddr_in6 *sin6;
1040 int fnd;
1041 struct sockaddr_in6 *sin_a6;
1042 struct sctp_inpcb *inp;
1043 struct sctp_tcb *stcb;
1044 struct sctp_nets *net;
1045 int error;
1046
1047 /* Do the malloc first in case it blocks. */
1048 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
1049 if (sin6 == NULL)
1050 return (ENOMEM);
1051 sin6->sin6_family = AF_INET6;
1052 sin6->sin6_len = sizeof(*sin6);
1053
1054 inp = (struct sctp_inpcb *)so->so_pcb;
1055 if ((inp == NULL) ||
1056 ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) {
1057 /* UDP type and listeners will drop out here */
1058 SCTP_FREE_SONAME(sin6);
1059 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOTCONN);
1060 return (ENOTCONN);
1061 }
1062 SCTP_INP_RLOCK(inp);
1063 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1064 if (stcb) {
1065 SCTP_TCB_LOCK(stcb);
1066 }
1067 SCTP_INP_RUNLOCK(inp);
1068 if (stcb == NULL) {
1069 SCTP_FREE_SONAME(sin6);
1070 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET);
1071 return (ECONNRESET);
1072 }
1073 fnd = 0;
1074 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1075 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1076 if (sin_a6->sin6_family == AF_INET6) {
1077 fnd = 1;
1078 sin6->sin6_port = stcb->rport;
1079 sin6->sin6_addr = sin_a6->sin6_addr;
1080 break;
1081 }
1082 }
1083 SCTP_TCB_UNLOCK(stcb);
1084 if (!fnd) {
1085 /* No IPv4 address */
1086 SCTP_FREE_SONAME(sin6);
1087 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
1088 return (ENOENT);
1089 }
1090 if ((error = sa6_recoverscope(sin6)) != 0) {
1091 SCTP_FREE_SONAME(sin6);
1092 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, error);
1093 return (error);
1094 }
1095 *addr = (struct sockaddr *)sin6;
1096 return (0);
1097 }
1098
1099 static int
1100 sctp6_in6getaddr(struct socket *so, struct sockaddr **nam)
1101 {
1102 struct in6pcb *inp6 = sotoin6pcb(so);
1103 int error;
1104
1105 if (inp6 == NULL) {
1106 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1107 return (EINVAL);
1108 }
1109
1110 /* allow v6 addresses precedence */
1111 error = sctp6_getaddr(so, nam);
1112 #ifdef INET
1113 if (error) {
1114 struct sockaddr_in6 *sin6;
1115
1116 /* try v4 next if v6 failed */
1117 error = sctp_ingetaddr(so, nam);
1118 if (error) {
1119 return (error);
1120 }
1121 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
1122 if (sin6 == NULL) {
1123 SCTP_FREE_SONAME(*nam);
1124 return (ENOMEM);
1125 }
1126 in6_sin_2_v4mapsin6((struct sockaddr_in *)*nam, sin6);
1127 SCTP_FREE_SONAME(*nam);
1128 *nam = (struct sockaddr *)sin6;
1129 }
1130 #endif
1131 return (error);
1132 }
1133
1134
1135 static int
1136 sctp6_getpeeraddr(struct socket *so, struct sockaddr **nam)
1137 {
1138 struct in6pcb *inp6 = sotoin6pcb(so);
1139 int error;
1140
1141 if (inp6 == NULL) {
1142 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1143 return (EINVAL);
1144 }
1145
1146 /* allow v6 addresses precedence */
1147 error = sctp6_peeraddr(so, nam);
1148 #ifdef INET
1149 if (error) {
1150 struct sockaddr_in6 *sin6;
1151
1152 /* try v4 next if v6 failed */
1153 error = sctp_peeraddr(so, nam);
1154 if (error) {
1155 return (error);
1156 }
1157 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
1158 if (sin6 == NULL) {
1159 SCTP_FREE_SONAME(*nam);
1160 return (ENOMEM);
1161 }
1162 in6_sin_2_v4mapsin6((struct sockaddr_in *)*nam, sin6);
1163 SCTP_FREE_SONAME(*nam);
1164 *nam = (struct sockaddr *)sin6;
1165 }
1166 #endif
1167 return (error);
1168 }
1169
1170 struct pr_usrreqs sctp6_usrreqs = {
1171 .pru_abort = sctp6_abort,
1172 .pru_accept = sctp_accept,
1173 .pru_attach = sctp6_attach,
1174 .pru_bind = sctp6_bind,
1175 .pru_connect = sctp6_connect,
1176 .pru_control = in6_control,
1177 .pru_close = sctp6_close,
1178 .pru_detach = sctp6_close,
1179 .pru_sopoll = sopoll_generic,
1180 .pru_flush = sctp_flush,
1181 .pru_disconnect = sctp6_disconnect,
1182 .pru_listen = sctp_listen,
1183 .pru_peeraddr = sctp6_getpeeraddr,
1184 .pru_send = sctp6_send,
1185 .pru_shutdown = sctp_shutdown,
1186 .pru_sockaddr = sctp6_in6getaddr,
1187 .pru_sosend = sctp_sosend,
1188 .pru_soreceive = sctp_soreceive
1189 };
1190
1191 #endif
Cache object: 126c47bb7adda7e8f4bde10ee3cbb7b3
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