1 /*-
2 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
4 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * a) Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
11 *
12 * b) Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the distribution.
15 *
16 * c) Neither the name of Cisco Systems, Inc. nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD: releng/11.2/sys/netinet6/sctp6_usrreq.c 338980 2018-09-27 18:34:42Z gordon $");
35
36 #include <netinet/sctp_os.h>
37 #ifdef INET6
38 #include <sys/proc.h>
39 #include <netinet/sctp_pcb.h>
40 #include <netinet/sctp_header.h>
41 #include <netinet/sctp_var.h>
42 #include <netinet6/sctp6_var.h>
43 #include <netinet/sctp_sysctl.h>
44 #include <netinet/sctp_output.h>
45 #include <netinet/sctp_uio.h>
46 #include <netinet/sctp_asconf.h>
47 #include <netinet/sctputil.h>
48 #include <netinet/sctp_indata.h>
49 #include <netinet/sctp_timer.h>
50 #include <netinet/sctp_auth.h>
51 #include <netinet/sctp_input.h>
52 #include <netinet/sctp_output.h>
53 #include <netinet/sctp_bsd_addr.h>
54 #include <netinet/sctp_crc32.h>
55 #include <netinet/icmp6.h>
56 #include <netinet/udp.h>
57
58 extern struct protosw inetsw[];
59
60 int
61 sctp6_input_with_port(struct mbuf **i_pak, int *offp, uint16_t port)
62 {
63 struct mbuf *m;
64 int iphlen;
65 uint32_t vrf_id;
66 uint8_t ecn_bits;
67 struct sockaddr_in6 src, dst;
68 struct ip6_hdr *ip6;
69 struct sctphdr *sh;
70 struct sctp_chunkhdr *ch;
71 int length, offset;
72 uint8_t compute_crc;
73 uint32_t mflowid;
74 uint8_t mflowtype;
75 uint16_t fibnum;
76
77 iphlen = *offp;
78 if (SCTP_GET_PKT_VRFID(*i_pak, vrf_id)) {
79 SCTP_RELEASE_PKT(*i_pak);
80 return (IPPROTO_DONE);
81 }
82 m = SCTP_HEADER_TO_CHAIN(*i_pak);
83 #ifdef SCTP_MBUF_LOGGING
84 /* Log in any input mbufs */
85 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
86 sctp_log_mbc(m, SCTP_MBUF_INPUT);
87 }
88 #endif
89 #ifdef SCTP_PACKET_LOGGING
90 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LAST_PACKET_TRACING) {
91 sctp_packet_log(m);
92 }
93 #endif
94 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
95 "sctp6_input(): Packet of length %d received on %s with csum_flags 0x%b.\n",
96 m->m_pkthdr.len,
97 if_name(m->m_pkthdr.rcvif),
98 (int)m->m_pkthdr.csum_flags, CSUM_BITS);
99 mflowid = m->m_pkthdr.flowid;
100 mflowtype = M_HASHTYPE_GET(m);
101 fibnum = M_GETFIB(m);
102 SCTP_STAT_INCR(sctps_recvpackets);
103 SCTP_STAT_INCR_COUNTER64(sctps_inpackets);
104 /* Get IP, SCTP, and first chunk header together in the first mbuf. */
105 offset = iphlen + sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr);
106 ip6 = mtod(m, struct ip6_hdr *);
107 IP6_EXTHDR_GET(sh, struct sctphdr *, m, iphlen,
108 (int)(sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr)));
109 if (sh == NULL) {
110 SCTP_STAT_INCR(sctps_hdrops);
111 return (IPPROTO_DONE);
112 }
113 ch = (struct sctp_chunkhdr *)((caddr_t)sh + sizeof(struct sctphdr));
114 offset -= sizeof(struct sctp_chunkhdr);
115 memset(&src, 0, sizeof(struct sockaddr_in6));
116 src.sin6_family = AF_INET6;
117 src.sin6_len = sizeof(struct sockaddr_in6);
118 src.sin6_port = sh->src_port;
119 src.sin6_addr = ip6->ip6_src;
120 if (in6_setscope(&src.sin6_addr, m->m_pkthdr.rcvif, NULL) != 0) {
121 goto out;
122 }
123 memset(&dst, 0, sizeof(struct sockaddr_in6));
124 dst.sin6_family = AF_INET6;
125 dst.sin6_len = sizeof(struct sockaddr_in6);
126 dst.sin6_port = sh->dest_port;
127 dst.sin6_addr = ip6->ip6_dst;
128 if (in6_setscope(&dst.sin6_addr, m->m_pkthdr.rcvif, NULL) != 0) {
129 goto out;
130 }
131 length = ntohs(ip6->ip6_plen) + iphlen;
132 /* Validate mbuf chain length with IP payload length. */
133 if (SCTP_HEADER_LEN(m) != length) {
134 SCTPDBG(SCTP_DEBUG_INPUT1,
135 "sctp6_input() length:%d reported length:%d\n", length, SCTP_HEADER_LEN(m));
136 SCTP_STAT_INCR(sctps_hdrops);
137 goto out;
138 }
139 if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) {
140 goto out;
141 }
142 ecn_bits = ((ntohl(ip6->ip6_flow) >> 20) & 0x000000ff);
143 if (m->m_pkthdr.csum_flags & CSUM_SCTP_VALID) {
144 SCTP_STAT_INCR(sctps_recvhwcrc);
145 compute_crc = 0;
146 } else {
147 SCTP_STAT_INCR(sctps_recvswcrc);
148 compute_crc = 1;
149 }
150 sctp_common_input_processing(&m, iphlen, offset, length,
151 (struct sockaddr *)&src,
152 (struct sockaddr *)&dst,
153 sh, ch,
154 compute_crc,
155 ecn_bits,
156 mflowtype, mflowid, fibnum,
157 vrf_id, port);
158 out:
159 if (m) {
160 sctp_m_freem(m);
161 }
162 return (IPPROTO_DONE);
163 }
164
165
166 int
167 sctp6_input(struct mbuf **i_pak, int *offp, int proto SCTP_UNUSED)
168 {
169 return (sctp6_input_with_port(i_pak, offp, 0));
170 }
171
172 void
173 sctp6_notify(struct sctp_inpcb *inp,
174 struct sctp_tcb *stcb,
175 struct sctp_nets *net,
176 uint8_t icmp6_type,
177 uint8_t icmp6_code,
178 uint32_t next_mtu)
179 {
180 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
181 struct socket *so;
182 #endif
183 int timer_stopped;
184
185 switch (icmp6_type) {
186 case ICMP6_DST_UNREACH:
187 if ((icmp6_code == ICMP6_DST_UNREACH_NOROUTE) ||
188 (icmp6_code == ICMP6_DST_UNREACH_ADMIN) ||
189 (icmp6_code == ICMP6_DST_UNREACH_BEYONDSCOPE) ||
190 (icmp6_code == ICMP6_DST_UNREACH_ADDR)) {
191 /* Mark the net unreachable. */
192 if (net->dest_state & SCTP_ADDR_REACHABLE) {
193 /* Ok that destination is not reachable */
194 net->dest_state &= ~SCTP_ADDR_REACHABLE;
195 net->dest_state &= ~SCTP_ADDR_PF;
196 sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN,
197 stcb, 0, (void *)net, SCTP_SO_NOT_LOCKED);
198 }
199 }
200 SCTP_TCB_UNLOCK(stcb);
201 break;
202 case ICMP6_PARAM_PROB:
203 /* Treat it like an ABORT. */
204 if (icmp6_code == ICMP6_PARAMPROB_NEXTHEADER) {
205 sctp_abort_notification(stcb, 1, 0, NULL, SCTP_SO_NOT_LOCKED);
206 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
207 so = SCTP_INP_SO(inp);
208 atomic_add_int(&stcb->asoc.refcnt, 1);
209 SCTP_TCB_UNLOCK(stcb);
210 SCTP_SOCKET_LOCK(so, 1);
211 SCTP_TCB_LOCK(stcb);
212 atomic_subtract_int(&stcb->asoc.refcnt, 1);
213 #endif
214 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
215 SCTP_FROM_SCTP_USRREQ + SCTP_LOC_2);
216 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
217 SCTP_SOCKET_UNLOCK(so, 1);
218 #endif
219 } else {
220 SCTP_TCB_UNLOCK(stcb);
221 }
222 break;
223 case ICMP6_PACKET_TOO_BIG:
224 if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
225 SCTP_TCB_UNLOCK(stcb);
226 break;
227 }
228 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
229 timer_stopped = 1;
230 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
231 SCTP_FROM_SCTP_USRREQ + SCTP_LOC_1);
232 } else {
233 timer_stopped = 0;
234 }
235 /* Update the path MTU. */
236 if (net->port) {
237 next_mtu -= sizeof(struct udphdr);
238 }
239 if (net->mtu > next_mtu) {
240 net->mtu = next_mtu;
241 }
242 /* Update the association MTU */
243 if (stcb->asoc.smallest_mtu > next_mtu) {
244 sctp_pathmtu_adjustment(stcb, next_mtu);
245 }
246 /* Finally, start the PMTU timer if it was running before. */
247 if (timer_stopped) {
248 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
249 }
250 SCTP_TCB_UNLOCK(stcb);
251 break;
252 default:
253 SCTP_TCB_UNLOCK(stcb);
254 break;
255 }
256 }
257
258 void
259 sctp6_ctlinput(int cmd, struct sockaddr *pktdst, void *d)
260 {
261 struct ip6ctlparam *ip6cp;
262 struct sctp_inpcb *inp;
263 struct sctp_tcb *stcb;
264 struct sctp_nets *net;
265 struct sctphdr sh;
266 struct sockaddr_in6 src, dst;
267
268 if (pktdst->sa_family != AF_INET6 ||
269 pktdst->sa_len != sizeof(struct sockaddr_in6)) {
270 return;
271 }
272 if ((unsigned)cmd >= PRC_NCMDS) {
273 return;
274 }
275 if (PRC_IS_REDIRECT(cmd)) {
276 d = NULL;
277 } else if (inet6ctlerrmap[cmd] == 0) {
278 return;
279 }
280 /* If the parameter is from icmp6, decode it. */
281 if (d != NULL) {
282 ip6cp = (struct ip6ctlparam *)d;
283 } else {
284 ip6cp = (struct ip6ctlparam *)NULL;
285 }
286
287 if (ip6cp != NULL) {
288 /*
289 * XXX: We assume that when IPV6 is non NULL, M and OFF are
290 * valid.
291 */
292 if (ip6cp->ip6c_m == NULL) {
293 return;
294 }
295 /*
296 * Check if we can safely examine the ports and the
297 * verification tag of the SCTP common header.
298 */
299 if (ip6cp->ip6c_m->m_pkthdr.len <
300 (int32_t)(ip6cp->ip6c_off + offsetof(struct sctphdr, checksum))) {
301 return;
302 }
303 /* Copy out the port numbers and the verification tag. */
304 memset(&sh, 0, sizeof(sh));
305 m_copydata(ip6cp->ip6c_m,
306 ip6cp->ip6c_off,
307 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t),
308 (caddr_t)&sh);
309 memset(&src, 0, sizeof(struct sockaddr_in6));
310 src.sin6_family = AF_INET6;
311 src.sin6_len = sizeof(struct sockaddr_in6);
312 src.sin6_port = sh.src_port;
313 src.sin6_addr = ip6cp->ip6c_ip6->ip6_src;
314 if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
315 return;
316 }
317 memset(&dst, 0, sizeof(struct sockaddr_in6));
318 dst.sin6_family = AF_INET6;
319 dst.sin6_len = sizeof(struct sockaddr_in6);
320 dst.sin6_port = sh.dest_port;
321 dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst;
322 if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
323 return;
324 }
325 inp = NULL;
326 net = NULL;
327 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
328 (struct sockaddr *)&src,
329 &inp, &net, 1, SCTP_DEFAULT_VRFID);
330 if ((stcb != NULL) &&
331 (net != NULL) &&
332 (inp != NULL)) {
333 /* Check the verification tag */
334 if (ntohl(sh.v_tag) != 0) {
335 /*
336 * This must be the verification tag used
337 * for sending out packets. We don't
338 * consider packets reflecting the
339 * verification tag.
340 */
341 if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) {
342 SCTP_TCB_UNLOCK(stcb);
343 return;
344 }
345 } else {
346 if (ip6cp->ip6c_m->m_pkthdr.len >=
347 ip6cp->ip6c_off + sizeof(struct sctphdr) +
348 sizeof(struct sctp_chunkhdr) +
349 offsetof(struct sctp_init, a_rwnd)) {
350 /*
351 * In this case we can check if we
352 * got an INIT chunk and if the
353 * initiate tag matches.
354 */
355 uint32_t initiate_tag;
356 uint8_t chunk_type;
357
358 m_copydata(ip6cp->ip6c_m,
359 ip6cp->ip6c_off +
360 sizeof(struct sctphdr),
361 sizeof(uint8_t),
362 (caddr_t)&chunk_type);
363 m_copydata(ip6cp->ip6c_m,
364 ip6cp->ip6c_off +
365 sizeof(struct sctphdr) +
366 sizeof(struct sctp_chunkhdr),
367 sizeof(uint32_t),
368 (caddr_t)&initiate_tag);
369 if ((chunk_type != SCTP_INITIATION) ||
370 (ntohl(initiate_tag) != stcb->asoc.my_vtag)) {
371 SCTP_TCB_UNLOCK(stcb);
372 return;
373 }
374 } else {
375 SCTP_TCB_UNLOCK(stcb);
376 return;
377 }
378 }
379 sctp6_notify(inp, stcb, net,
380 ip6cp->ip6c_icmp6->icmp6_type,
381 ip6cp->ip6c_icmp6->icmp6_code,
382 ntohl(ip6cp->ip6c_icmp6->icmp6_mtu));
383 } else {
384 if ((stcb == NULL) && (inp != NULL)) {
385 /* reduce inp's ref-count */
386 SCTP_INP_WLOCK(inp);
387 SCTP_INP_DECR_REF(inp);
388 SCTP_INP_WUNLOCK(inp);
389 }
390 if (stcb) {
391 SCTP_TCB_UNLOCK(stcb);
392 }
393 }
394 }
395 }
396
397 /*
398 * this routine can probably be collasped into the one in sctp_userreq.c
399 * since they do the same thing and now we lookup with a sockaddr
400 */
401 static int
402 sctp6_getcred(SYSCTL_HANDLER_ARGS)
403 {
404 struct xucred xuc;
405 struct sockaddr_in6 addrs[2];
406 struct sctp_inpcb *inp;
407 struct sctp_nets *net;
408 struct sctp_tcb *stcb;
409 int error;
410 uint32_t vrf_id;
411
412 vrf_id = SCTP_DEFAULT_VRFID;
413
414 error = priv_check(req->td, PRIV_NETINET_GETCRED);
415 if (error)
416 return (error);
417
418 if (req->newlen != sizeof(addrs)) {
419 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
420 return (EINVAL);
421 }
422 if (req->oldlen != sizeof(struct ucred)) {
423 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
424 return (EINVAL);
425 }
426 error = SYSCTL_IN(req, addrs, sizeof(addrs));
427 if (error)
428 return (error);
429
430 stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[1]),
431 sin6tosa(&addrs[0]),
432 &inp, &net, 1, vrf_id);
433 if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) {
434 if ((inp != NULL) && (stcb == NULL)) {
435 /* reduce ref-count */
436 SCTP_INP_WLOCK(inp);
437 SCTP_INP_DECR_REF(inp);
438 goto cred_can_cont;
439 }
440 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
441 error = ENOENT;
442 goto out;
443 }
444 SCTP_TCB_UNLOCK(stcb);
445 /*
446 * We use the write lock here, only since in the error leg we need
447 * it. If we used RLOCK, then we would have to
448 * wlock/decr/unlock/rlock. Which in theory could create a hole.
449 * Better to use higher wlock.
450 */
451 SCTP_INP_WLOCK(inp);
452 cred_can_cont:
453 error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket);
454 if (error) {
455 SCTP_INP_WUNLOCK(inp);
456 goto out;
457 }
458 cru2x(inp->sctp_socket->so_cred, &xuc);
459 SCTP_INP_WUNLOCK(inp);
460 error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred));
461 out:
462 return (error);
463 }
464
465 SYSCTL_PROC(_net_inet6_sctp6, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW,
466 0, 0,
467 sctp6_getcred, "S,ucred", "Get the ucred of a SCTP6 connection");
468
469
470 /* This is the same as the sctp_abort() could be made common */
471 static void
472 sctp6_abort(struct socket *so)
473 {
474 struct sctp_inpcb *inp;
475 uint32_t flags;
476
477 inp = (struct sctp_inpcb *)so->so_pcb;
478 if (inp == NULL) {
479 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
480 return;
481 }
482 sctp_must_try_again:
483 flags = inp->sctp_flags;
484 #ifdef SCTP_LOG_CLOSING
485 sctp_log_closing(inp, NULL, 17);
486 #endif
487 if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
488 (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
489 #ifdef SCTP_LOG_CLOSING
490 sctp_log_closing(inp, NULL, 16);
491 #endif
492 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
493 SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
494 SOCK_LOCK(so);
495 SCTP_SB_CLEAR(so->so_snd);
496 /*
497 * same for the rcv ones, they are only here for the
498 * accounting/select.
499 */
500 SCTP_SB_CLEAR(so->so_rcv);
501 /* Now null out the reference, we are completely detached. */
502 so->so_pcb = NULL;
503 SOCK_UNLOCK(so);
504 } else {
505 flags = inp->sctp_flags;
506 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
507 goto sctp_must_try_again;
508 }
509 }
510 return;
511 }
512
513 static int
514 sctp6_attach(struct socket *so, int proto SCTP_UNUSED, struct thread *p SCTP_UNUSED)
515 {
516 struct in6pcb *inp6;
517 int error;
518 struct sctp_inpcb *inp;
519 uint32_t vrf_id = SCTP_DEFAULT_VRFID;
520
521 inp = (struct sctp_inpcb *)so->so_pcb;
522 if (inp != NULL) {
523 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
524 return (EINVAL);
525 }
526 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
527 error = SCTP_SORESERVE(so, SCTP_BASE_SYSCTL(sctp_sendspace), SCTP_BASE_SYSCTL(sctp_recvspace));
528 if (error)
529 return (error);
530 }
531 error = sctp_inpcb_alloc(so, vrf_id);
532 if (error)
533 return (error);
534 inp = (struct sctp_inpcb *)so->so_pcb;
535 SCTP_INP_WLOCK(inp);
536 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUND_V6; /* I'm v6! */
537 inp6 = (struct in6pcb *)inp;
538
539 inp6->inp_vflag |= INP_IPV6;
540 inp6->in6p_hops = -1; /* use kernel default */
541 inp6->in6p_cksum = -1; /* just to be sure */
542 #ifdef INET
543 /*
544 * XXX: ugly!! IPv4 TTL initialization is necessary for an IPv6
545 * socket as well, because the socket may be bound to an IPv6
546 * wildcard address, which may match an IPv4-mapped IPv6 address.
547 */
548 inp6->inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
549 #endif
550 SCTP_INP_WUNLOCK(inp);
551 return (0);
552 }
553
554 static int
555 sctp6_bind(struct socket *so, struct sockaddr *addr, struct thread *p)
556 {
557 struct sctp_inpcb *inp;
558 struct in6pcb *inp6;
559 int error;
560 u_char vflagsav;
561
562 inp = (struct sctp_inpcb *)so->so_pcb;
563 if (inp == NULL) {
564 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
565 return (EINVAL);
566 }
567 if (addr) {
568 switch (addr->sa_family) {
569 #ifdef INET
570 case AF_INET:
571 if (addr->sa_len != sizeof(struct sockaddr_in)) {
572 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
573 return (EINVAL);
574 }
575 break;
576 #endif
577 #ifdef INET6
578 case AF_INET6:
579 if (addr->sa_len != sizeof(struct sockaddr_in6)) {
580 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
581 return (EINVAL);
582 }
583 break;
584 #endif
585 default:
586 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
587 return (EINVAL);
588 }
589 }
590 inp6 = (struct in6pcb *)inp;
591 vflagsav = inp6->inp_vflag;
592 inp6->inp_vflag &= ~INP_IPV4;
593 inp6->inp_vflag |= INP_IPV6;
594 if ((addr != NULL) && (SCTP_IPV6_V6ONLY(inp6) == 0)) {
595 switch (addr->sa_family) {
596 #ifdef INET
597 case AF_INET:
598 /* binding v4 addr to v6 socket, so reset flags */
599 inp6->inp_vflag |= INP_IPV4;
600 inp6->inp_vflag &= ~INP_IPV6;
601 break;
602 #endif
603 #ifdef INET6
604 case AF_INET6:
605 {
606 struct sockaddr_in6 *sin6_p;
607
608 sin6_p = (struct sockaddr_in6 *)addr;
609
610 if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr)) {
611 inp6->inp_vflag |= INP_IPV4;
612 }
613 #ifdef INET
614 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) {
615 struct sockaddr_in sin;
616
617 in6_sin6_2_sin(&sin, sin6_p);
618 inp6->inp_vflag |= INP_IPV4;
619 inp6->inp_vflag &= ~INP_IPV6;
620 error = sctp_inpcb_bind(so, (struct sockaddr *)&sin, NULL, p);
621 goto out;
622 }
623 #endif
624 break;
625 }
626 #endif
627 default:
628 break;
629 }
630 } else if (addr != NULL) {
631 struct sockaddr_in6 *sin6_p;
632
633 /* IPV6_V6ONLY socket */
634 #ifdef INET
635 if (addr->sa_family == AF_INET) {
636 /* can't bind v4 addr to v6 only socket! */
637 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
638 error = EINVAL;
639 goto out;
640 }
641 #endif
642 sin6_p = (struct sockaddr_in6 *)addr;
643
644 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) {
645 /* can't bind v4-mapped addrs either! */
646 /* NOTE: we don't support SIIT */
647 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
648 error = EINVAL;
649 goto out;
650 }
651 }
652 error = sctp_inpcb_bind(so, addr, NULL, p);
653 out:
654 if (error != 0)
655 inp6->inp_vflag = vflagsav;
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 stcb->asoc.state = 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 /* allow v6 addresses precedence */
1110 error = sctp6_getaddr(so, nam);
1111 #ifdef INET
1112 if (error) {
1113 struct sockaddr_in6 *sin6;
1114
1115 /* try v4 next if v6 failed */
1116 error = sctp_ingetaddr(so, nam);
1117 if (error) {
1118 return (error);
1119 }
1120 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
1121 if (sin6 == NULL) {
1122 SCTP_FREE_SONAME(*nam);
1123 return (ENOMEM);
1124 }
1125 in6_sin_2_v4mapsin6((struct sockaddr_in *)*nam, sin6);
1126 SCTP_FREE_SONAME(*nam);
1127 *nam = (struct sockaddr *)sin6;
1128 }
1129 #endif
1130 return (error);
1131 }
1132
1133
1134 static int
1135 sctp6_getpeeraddr(struct socket *so, struct sockaddr **nam)
1136 {
1137 struct in6pcb *inp6 = sotoin6pcb(so);
1138 int error;
1139
1140 if (inp6 == NULL) {
1141 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1142 return (EINVAL);
1143 }
1144 /* allow v6 addresses precedence */
1145 error = sctp6_peeraddr(so, nam);
1146 #ifdef INET
1147 if (error) {
1148 struct sockaddr_in6 *sin6;
1149
1150 /* try v4 next if v6 failed */
1151 error = sctp_peeraddr(so, nam);
1152 if (error) {
1153 return (error);
1154 }
1155 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
1156 if (sin6 == NULL) {
1157 SCTP_FREE_SONAME(*nam);
1158 return (ENOMEM);
1159 }
1160 in6_sin_2_v4mapsin6((struct sockaddr_in *)*nam, sin6);
1161 SCTP_FREE_SONAME(*nam);
1162 *nam = (struct sockaddr *)sin6;
1163 }
1164 #endif
1165 return (error);
1166 }
1167
1168 struct pr_usrreqs sctp6_usrreqs = {
1169 .pru_abort = sctp6_abort,
1170 .pru_accept = sctp_accept,
1171 .pru_attach = sctp6_attach,
1172 .pru_bind = sctp6_bind,
1173 .pru_connect = sctp6_connect,
1174 .pru_control = in6_control,
1175 .pru_close = sctp6_close,
1176 .pru_detach = sctp6_close,
1177 .pru_sopoll = sopoll_generic,
1178 .pru_flush = sctp_flush,
1179 .pru_disconnect = sctp6_disconnect,
1180 .pru_listen = sctp_listen,
1181 .pru_peeraddr = sctp6_getpeeraddr,
1182 .pru_send = sctp6_send,
1183 .pru_shutdown = sctp_shutdown,
1184 .pru_sockaddr = sctp6_in6getaddr,
1185 .pru_sosend = sctp_sosend,
1186 .pru_soreceive = sctp_soreceive
1187 };
1188
1189 #endif
Cache object: 275c967f1c05e62e1ffa6f628f18d17a
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