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/11.1/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 #if !defined(SCTP_WITH_NO_CSUM)
73 uint8_t compute_crc;
74 #endif
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 defined(SCTP_WITH_NO_CSUM)
146 SCTP_STAT_INCR(sctps_recvnocrc);
147 #else
148 if (m->m_pkthdr.csum_flags & CSUM_SCTP_VALID) {
149 SCTP_STAT_INCR(sctps_recvhwcrc);
150 compute_crc = 0;
151 } else {
152 SCTP_STAT_INCR(sctps_recvswcrc);
153 compute_crc = 1;
154 }
155 #endif
156 sctp_common_input_processing(&m, iphlen, offset, length,
157 (struct sockaddr *)&src,
158 (struct sockaddr *)&dst,
159 sh, ch,
160 #if !defined(SCTP_WITH_NO_CSUM)
161 compute_crc,
162 #endif
163 ecn_bits,
164 mflowtype, mflowid, fibnum,
165 vrf_id, port);
166 out:
167 if (m) {
168 sctp_m_freem(m);
169 }
170 return (IPPROTO_DONE);
171 }
172
173
174 int
175 sctp6_input(struct mbuf **i_pak, int *offp, int proto SCTP_UNUSED)
176 {
177 return (sctp6_input_with_port(i_pak, offp, 0));
178 }
179
180 void
181 sctp6_notify(struct sctp_inpcb *inp,
182 struct sctp_tcb *stcb,
183 struct sctp_nets *net,
184 uint8_t icmp6_type,
185 uint8_t icmp6_code,
186 uint32_t next_mtu)
187 {
188 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
189 struct socket *so;
190 #endif
191 int timer_stopped;
192
193 switch (icmp6_type) {
194 case ICMP6_DST_UNREACH:
195 if ((icmp6_code == ICMP6_DST_UNREACH_NOROUTE) ||
196 (icmp6_code == ICMP6_DST_UNREACH_ADMIN) ||
197 (icmp6_code == ICMP6_DST_UNREACH_BEYONDSCOPE) ||
198 (icmp6_code == ICMP6_DST_UNREACH_ADDR)) {
199 /* Mark the net unreachable. */
200 if (net->dest_state & SCTP_ADDR_REACHABLE) {
201 /* Ok that destination is not reachable */
202 net->dest_state &= ~SCTP_ADDR_REACHABLE;
203 net->dest_state &= ~SCTP_ADDR_PF;
204 sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN,
205 stcb, 0, (void *)net, SCTP_SO_NOT_LOCKED);
206 }
207 }
208 SCTP_TCB_UNLOCK(stcb);
209 break;
210 case ICMP6_PARAM_PROB:
211 /* Treat it like an ABORT. */
212 if (icmp6_code == ICMP6_PARAMPROB_NEXTHEADER) {
213 sctp_abort_notification(stcb, 1, 0, NULL, SCTP_SO_NOT_LOCKED);
214 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
215 so = SCTP_INP_SO(inp);
216 atomic_add_int(&stcb->asoc.refcnt, 1);
217 SCTP_TCB_UNLOCK(stcb);
218 SCTP_SOCKET_LOCK(so, 1);
219 SCTP_TCB_LOCK(stcb);
220 atomic_subtract_int(&stcb->asoc.refcnt, 1);
221 #endif
222 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
223 SCTP_FROM_SCTP_USRREQ + SCTP_LOC_2);
224 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
225 SCTP_SOCKET_UNLOCK(so, 1);
226 #endif
227 } else {
228 SCTP_TCB_UNLOCK(stcb);
229 }
230 break;
231 case ICMP6_PACKET_TOO_BIG:
232 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
233 timer_stopped = 1;
234 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
235 SCTP_FROM_SCTP_USRREQ + SCTP_LOC_1);
236 } else {
237 timer_stopped = 0;
238 }
239 /* Update the path MTU. */
240 if (net->port) {
241 next_mtu -= sizeof(struct udphdr);
242 }
243 if (net->mtu > next_mtu) {
244 net->mtu = next_mtu;
245 }
246 /* Update the association MTU */
247 if (stcb->asoc.smallest_mtu > next_mtu) {
248 sctp_pathmtu_adjustment(stcb, next_mtu);
249 }
250 /* Finally, start the PMTU timer if it was running before. */
251 if (timer_stopped) {
252 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
253 }
254 SCTP_TCB_UNLOCK(stcb);
255 break;
256 default:
257 SCTP_TCB_UNLOCK(stcb);
258 break;
259 }
260 }
261
262 void
263 sctp6_ctlinput(int cmd, struct sockaddr *pktdst, void *d)
264 {
265 struct ip6ctlparam *ip6cp;
266 struct sctp_inpcb *inp;
267 struct sctp_tcb *stcb;
268 struct sctp_nets *net;
269 struct sctphdr sh;
270 struct sockaddr_in6 src, dst;
271
272 if (pktdst->sa_family != AF_INET6 ||
273 pktdst->sa_len != sizeof(struct sockaddr_in6)) {
274 return;
275 }
276 if ((unsigned)cmd >= PRC_NCMDS) {
277 return;
278 }
279 if (PRC_IS_REDIRECT(cmd)) {
280 d = NULL;
281 } else if (inet6ctlerrmap[cmd] == 0) {
282 return;
283 }
284 /* If the parameter is from icmp6, decode it. */
285 if (d != NULL) {
286 ip6cp = (struct ip6ctlparam *)d;
287 } else {
288 ip6cp = (struct ip6ctlparam *)NULL;
289 }
290
291 if (ip6cp != NULL) {
292 /*
293 * XXX: We assume that when IPV6 is non NULL, M and OFF are
294 * valid.
295 */
296 if (ip6cp->ip6c_m == NULL) {
297 return;
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 /* Copy out the port numbers and the verification tag. */
308 bzero(&sh, sizeof(sh));
309 m_copydata(ip6cp->ip6c_m,
310 ip6cp->ip6c_off,
311 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t),
312 (caddr_t)&sh);
313 memset(&src, 0, sizeof(struct sockaddr_in6));
314 src.sin6_family = AF_INET6;
315 src.sin6_len = sizeof(struct sockaddr_in6);
316 src.sin6_port = sh.src_port;
317 src.sin6_addr = ip6cp->ip6c_ip6->ip6_src;
318 if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
319 return;
320 }
321 memset(&dst, 0, sizeof(struct sockaddr_in6));
322 dst.sin6_family = AF_INET6;
323 dst.sin6_len = sizeof(struct sockaddr_in6);
324 dst.sin6_port = sh.dest_port;
325 dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst;
326 if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
327 return;
328 }
329 inp = NULL;
330 net = NULL;
331 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
332 (struct sockaddr *)&src,
333 &inp, &net, 1, SCTP_DEFAULT_VRFID);
334 if ((stcb != NULL) &&
335 (net != NULL) &&
336 (inp != NULL)) {
337 /* Check the verification tag */
338 if (ntohl(sh.v_tag) != 0) {
339 /*
340 * This must be the verification tag used
341 * for sending out packets. We don't
342 * consider packets reflecting the
343 * verification tag.
344 */
345 if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) {
346 SCTP_TCB_UNLOCK(stcb);
347 return;
348 }
349 } else {
350 if (ip6cp->ip6c_m->m_pkthdr.len >=
351 ip6cp->ip6c_off + sizeof(struct sctphdr) +
352 sizeof(struct sctp_chunkhdr) +
353 offsetof(struct sctp_init, a_rwnd)) {
354 /*
355 * In this case we can check if we
356 * got an INIT chunk and if the
357 * initiate tag matches.
358 */
359 uint32_t initiate_tag;
360 uint8_t chunk_type;
361
362 m_copydata(ip6cp->ip6c_m,
363 ip6cp->ip6c_off +
364 sizeof(struct sctphdr),
365 sizeof(uint8_t),
366 (caddr_t)&chunk_type);
367 m_copydata(ip6cp->ip6c_m,
368 ip6cp->ip6c_off +
369 sizeof(struct sctphdr) +
370 sizeof(struct sctp_chunkhdr),
371 sizeof(uint32_t),
372 (caddr_t)&initiate_tag);
373 if ((chunk_type != SCTP_INITIATION) ||
374 (ntohl(initiate_tag) != stcb->asoc.my_vtag)) {
375 SCTP_TCB_UNLOCK(stcb);
376 return;
377 }
378 } else {
379 SCTP_TCB_UNLOCK(stcb);
380 return;
381 }
382 }
383 sctp6_notify(inp, stcb, net,
384 ip6cp->ip6c_icmp6->icmp6_type,
385 ip6cp->ip6c_icmp6->icmp6_code,
386 ntohl(ip6cp->ip6c_icmp6->icmp6_mtu));
387 } else {
388 if ((stcb == NULL) && (inp != NULL)) {
389 /* reduce inp's ref-count */
390 SCTP_INP_WLOCK(inp);
391 SCTP_INP_DECR_REF(inp);
392 SCTP_INP_WUNLOCK(inp);
393 }
394 if (stcb) {
395 SCTP_TCB_UNLOCK(stcb);
396 }
397 }
398 }
399 }
400
401 /*
402 * this routine can probably be collasped into the one in sctp_userreq.c
403 * since they do the same thing and now we lookup with a sockaddr
404 */
405 static int
406 sctp6_getcred(SYSCTL_HANDLER_ARGS)
407 {
408 struct xucred xuc;
409 struct sockaddr_in6 addrs[2];
410 struct sctp_inpcb *inp;
411 struct sctp_nets *net;
412 struct sctp_tcb *stcb;
413 int error;
414 uint32_t vrf_id;
415
416 vrf_id = SCTP_DEFAULT_VRFID;
417
418 error = priv_check(req->td, PRIV_NETINET_GETCRED);
419 if (error)
420 return (error);
421
422 if (req->newlen != sizeof(addrs)) {
423 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
424 return (EINVAL);
425 }
426 if (req->oldlen != sizeof(struct ucred)) {
427 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
428 return (EINVAL);
429 }
430 error = SYSCTL_IN(req, addrs, sizeof(addrs));
431 if (error)
432 return (error);
433
434 stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[1]),
435 sin6tosa(&addrs[0]),
436 &inp, &net, 1, vrf_id);
437 if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) {
438 if ((inp != NULL) && (stcb == NULL)) {
439 /* reduce ref-count */
440 SCTP_INP_WLOCK(inp);
441 SCTP_INP_DECR_REF(inp);
442 goto cred_can_cont;
443 }
444 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
445 error = ENOENT;
446 goto out;
447 }
448 SCTP_TCB_UNLOCK(stcb);
449 /*
450 * We use the write lock here, only since in the error leg we need
451 * it. If we used RLOCK, then we would have to
452 * wlock/decr/unlock/rlock. Which in theory could create a hole.
453 * Better to use higher wlock.
454 */
455 SCTP_INP_WLOCK(inp);
456 cred_can_cont:
457 error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket);
458 if (error) {
459 SCTP_INP_WUNLOCK(inp);
460 goto out;
461 }
462 cru2x(inp->sctp_socket->so_cred, &xuc);
463 SCTP_INP_WUNLOCK(inp);
464 error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred));
465 out:
466 return (error);
467 }
468
469 SYSCTL_PROC(_net_inet6_sctp6, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW,
470 0, 0,
471 sctp6_getcred, "S,ucred", "Get the ucred of a SCTP6 connection");
472
473
474 /* This is the same as the sctp_abort() could be made common */
475 static void
476 sctp6_abort(struct socket *so)
477 {
478 struct sctp_inpcb *inp;
479 uint32_t flags;
480
481 inp = (struct sctp_inpcb *)so->so_pcb;
482 if (inp == NULL) {
483 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
484 return;
485 }
486 sctp_must_try_again:
487 flags = inp->sctp_flags;
488 #ifdef SCTP_LOG_CLOSING
489 sctp_log_closing(inp, NULL, 17);
490 #endif
491 if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
492 (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
493 #ifdef SCTP_LOG_CLOSING
494 sctp_log_closing(inp, NULL, 16);
495 #endif
496 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
497 SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
498 SOCK_LOCK(so);
499 SCTP_SB_CLEAR(so->so_snd);
500 /*
501 * same for the rcv ones, they are only here for the
502 * accounting/select.
503 */
504 SCTP_SB_CLEAR(so->so_rcv);
505 /* Now null out the reference, we are completely detached. */
506 so->so_pcb = NULL;
507 SOCK_UNLOCK(so);
508 } else {
509 flags = inp->sctp_flags;
510 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
511 goto sctp_must_try_again;
512 }
513 }
514 return;
515 }
516
517 static int
518 sctp6_attach(struct socket *so, int proto SCTP_UNUSED, struct thread *p SCTP_UNUSED)
519 {
520 struct in6pcb *inp6;
521 int error;
522 struct sctp_inpcb *inp;
523 uint32_t vrf_id = SCTP_DEFAULT_VRFID;
524
525 inp = (struct sctp_inpcb *)so->so_pcb;
526 if (inp != NULL) {
527 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
528 return (EINVAL);
529 }
530 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
531 error = SCTP_SORESERVE(so, SCTP_BASE_SYSCTL(sctp_sendspace), SCTP_BASE_SYSCTL(sctp_recvspace));
532 if (error)
533 return (error);
534 }
535 error = sctp_inpcb_alloc(so, vrf_id);
536 if (error)
537 return (error);
538 inp = (struct sctp_inpcb *)so->so_pcb;
539 SCTP_INP_WLOCK(inp);
540 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUND_V6; /* I'm v6! */
541 inp6 = (struct in6pcb *)inp;
542
543 inp6->inp_vflag |= INP_IPV6;
544 inp6->in6p_hops = -1; /* use kernel default */
545 inp6->in6p_cksum = -1; /* just to be sure */
546 #ifdef INET
547 /*
548 * XXX: ugly!! IPv4 TTL initialization is necessary for an IPv6
549 * socket as well, because the socket may be bound to an IPv6
550 * wildcard address, which may match an IPv4-mapped IPv6 address.
551 */
552 inp6->inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
553 #endif
554 SCTP_INP_WUNLOCK(inp);
555 return (0);
556 }
557
558 static int
559 sctp6_bind(struct socket *so, struct sockaddr *addr, struct thread *p)
560 {
561 struct sctp_inpcb *inp;
562 struct in6pcb *inp6;
563 int error;
564 u_char vflagsav;
565
566 inp = (struct sctp_inpcb *)so->so_pcb;
567 if (inp == NULL) {
568 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
569 return (EINVAL);
570 }
571 if (addr) {
572 switch (addr->sa_family) {
573 #ifdef INET
574 case AF_INET:
575 if (addr->sa_len != sizeof(struct sockaddr_in)) {
576 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
577 return (EINVAL);
578 }
579 break;
580 #endif
581 #ifdef INET6
582 case AF_INET6:
583 if (addr->sa_len != sizeof(struct sockaddr_in6)) {
584 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
585 return (EINVAL);
586 }
587 break;
588 #endif
589 default:
590 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
591 return (EINVAL);
592 }
593 }
594 inp6 = (struct in6pcb *)inp;
595 vflagsav = inp6->inp_vflag;
596 inp6->inp_vflag &= ~INP_IPV4;
597 inp6->inp_vflag |= INP_IPV6;
598 if ((addr != NULL) && (SCTP_IPV6_V6ONLY(inp6) == 0)) {
599 switch (addr->sa_family) {
600 #ifdef INET
601 case AF_INET:
602 /* binding v4 addr to v6 socket, so reset flags */
603 inp6->inp_vflag |= INP_IPV4;
604 inp6->inp_vflag &= ~INP_IPV6;
605 break;
606 #endif
607 #ifdef INET6
608 case AF_INET6:
609 {
610 struct sockaddr_in6 *sin6_p;
611
612 sin6_p = (struct sockaddr_in6 *)addr;
613
614 if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr)) {
615 inp6->inp_vflag |= INP_IPV4;
616 }
617 #ifdef INET
618 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) {
619 struct sockaddr_in sin;
620
621 in6_sin6_2_sin(&sin, sin6_p);
622 inp6->inp_vflag |= INP_IPV4;
623 inp6->inp_vflag &= ~INP_IPV6;
624 error = sctp_inpcb_bind(so, (struct sockaddr *)&sin, NULL, p);
625 goto out;
626 }
627 #endif
628 break;
629 }
630 #endif
631 default:
632 break;
633 }
634 } else if (addr != NULL) {
635 struct sockaddr_in6 *sin6_p;
636
637 /* IPV6_V6ONLY socket */
638 #ifdef INET
639 if (addr->sa_family == AF_INET) {
640 /* can't bind v4 addr to v6 only socket! */
641 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
642 error = EINVAL;
643 goto out;
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 error = EINVAL;
653 goto out;
654 }
655 }
656 error = sctp_inpcb_bind(so, addr, NULL, p);
657 out:
658 if (error != 0)
659 inp6->inp_vflag = vflagsav;
660 return (error);
661 }
662
663
664 static void
665 sctp6_close(struct socket *so)
666 {
667 sctp_close(so);
668 }
669
670 /* This could be made common with sctp_detach() since they are identical */
671
672 static
673 int
674 sctp6_disconnect(struct socket *so)
675 {
676 return (sctp_disconnect(so));
677 }
678
679
680 int
681 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
682 struct mbuf *control, struct thread *p);
683
684
685 static int
686 sctp6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
687 struct mbuf *control, struct thread *p)
688 {
689 struct sctp_inpcb *inp;
690 struct in6pcb *inp6;
691
692 #ifdef INET
693 struct sockaddr_in6 *sin6;
694 #endif /* INET */
695 /* No SPL needed since sctp_output does this */
696
697 inp = (struct sctp_inpcb *)so->so_pcb;
698 if (inp == NULL) {
699 if (control) {
700 SCTP_RELEASE_PKT(control);
701 control = NULL;
702 }
703 SCTP_RELEASE_PKT(m);
704 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
705 return (EINVAL);
706 }
707 inp6 = (struct in6pcb *)inp;
708 /*
709 * For the TCP model we may get a NULL addr, if we are a connected
710 * socket thats ok.
711 */
712 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) &&
713 (addr == NULL)) {
714 goto connected_type;
715 }
716 if (addr == NULL) {
717 SCTP_RELEASE_PKT(m);
718 if (control) {
719 SCTP_RELEASE_PKT(control);
720 control = NULL;
721 }
722 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EDESTADDRREQ);
723 return (EDESTADDRREQ);
724 }
725 #ifdef INET
726 sin6 = (struct sockaddr_in6 *)addr;
727 if (SCTP_IPV6_V6ONLY(inp6)) {
728 /*
729 * if IPV6_V6ONLY flag, we discard datagrams destined to a
730 * v4 addr or v4-mapped addr
731 */
732 if (addr->sa_family == AF_INET) {
733 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
734 return (EINVAL);
735 }
736 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
737 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
738 return (EINVAL);
739 }
740 }
741 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
742 struct sockaddr_in sin;
743
744 /* convert v4-mapped into v4 addr and send */
745 in6_sin6_2_sin(&sin, sin6);
746 return (sctp_sendm(so, flags, m, (struct sockaddr *)&sin, control, p));
747 }
748 #endif /* INET */
749 connected_type:
750 /* now what about control */
751 if (control) {
752 if (inp->control) {
753 SCTP_PRINTF("huh? control set?\n");
754 SCTP_RELEASE_PKT(inp->control);
755 inp->control = NULL;
756 }
757 inp->control = control;
758 }
759 /* Place the data */
760 if (inp->pkt) {
761 SCTP_BUF_NEXT(inp->pkt_last) = m;
762 inp->pkt_last = m;
763 } else {
764 inp->pkt_last = inp->pkt = m;
765 }
766 if (
767 /* FreeBSD and MacOSX uses a flag passed */
768 ((flags & PRUS_MORETOCOME) == 0)
769 ) {
770 /*
771 * note with the current version this code will only be used
772 * by OpenBSD, NetBSD and FreeBSD have methods for
773 * re-defining sosend() to use sctp_sosend(). One can
774 * optionaly switch back to this code (by changing back the
775 * defininitions but this is not advisable.
776 */
777 int ret;
778
779 ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags);
780 inp->pkt = NULL;
781 inp->control = NULL;
782 return (ret);
783 } else {
784 return (0);
785 }
786 }
787
788 static int
789 sctp6_connect(struct socket *so, struct sockaddr *addr, struct thread *p)
790 {
791 uint32_t vrf_id;
792 int error = 0;
793 struct sctp_inpcb *inp;
794 struct sctp_tcb *stcb;
795 #ifdef INET
796 struct in6pcb *inp6;
797 struct sockaddr_in6 *sin6;
798 union sctp_sockstore store;
799 #endif
800
801 #ifdef INET
802 inp6 = (struct in6pcb *)so->so_pcb;
803 #endif
804 inp = (struct sctp_inpcb *)so->so_pcb;
805 if (inp == NULL) {
806 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET);
807 return (ECONNRESET); /* I made the same as TCP since we are
808 * not setup? */
809 }
810 if (addr == NULL) {
811 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
812 return (EINVAL);
813 }
814 switch (addr->sa_family) {
815 #ifdef INET
816 case AF_INET:
817 if (addr->sa_len != sizeof(struct sockaddr_in)) {
818 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
819 return (EINVAL);
820 }
821 break;
822 #endif
823 #ifdef INET6
824 case AF_INET6:
825 if (addr->sa_len != sizeof(struct sockaddr_in6)) {
826 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
827 return (EINVAL);
828 }
829 break;
830 #endif
831 default:
832 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
833 return (EINVAL);
834 }
835
836 vrf_id = inp->def_vrf_id;
837 SCTP_ASOC_CREATE_LOCK(inp);
838 SCTP_INP_RLOCK(inp);
839 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
840 SCTP_PCB_FLAGS_UNBOUND) {
841 /* Bind a ephemeral port */
842 SCTP_INP_RUNLOCK(inp);
843 error = sctp6_bind(so, NULL, p);
844 if (error) {
845 SCTP_ASOC_CREATE_UNLOCK(inp);
846
847 return (error);
848 }
849 SCTP_INP_RLOCK(inp);
850 }
851 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
852 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
853 /* We are already connected AND the TCP model */
854 SCTP_INP_RUNLOCK(inp);
855 SCTP_ASOC_CREATE_UNLOCK(inp);
856 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EADDRINUSE);
857 return (EADDRINUSE);
858 }
859 #ifdef INET
860 sin6 = (struct sockaddr_in6 *)addr;
861 if (SCTP_IPV6_V6ONLY(inp6)) {
862 /*
863 * if IPV6_V6ONLY flag, ignore connections destined to a v4
864 * addr or v4-mapped addr
865 */
866 if (addr->sa_family == AF_INET) {
867 SCTP_INP_RUNLOCK(inp);
868 SCTP_ASOC_CREATE_UNLOCK(inp);
869 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
870 return (EINVAL);
871 }
872 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
873 SCTP_INP_RUNLOCK(inp);
874 SCTP_ASOC_CREATE_UNLOCK(inp);
875 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
876 return (EINVAL);
877 }
878 }
879 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
880 /* convert v4-mapped into v4 addr */
881 in6_sin6_2_sin(&store.sin, sin6);
882 addr = &store.sa;
883 }
884 #endif /* INET */
885 /* Now do we connect? */
886 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
887 stcb = LIST_FIRST(&inp->sctp_asoc_list);
888 if (stcb) {
889 SCTP_TCB_UNLOCK(stcb);
890 }
891 SCTP_INP_RUNLOCK(inp);
892 } else {
893 SCTP_INP_RUNLOCK(inp);
894 SCTP_INP_WLOCK(inp);
895 SCTP_INP_INCR_REF(inp);
896 SCTP_INP_WUNLOCK(inp);
897 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL);
898 if (stcb == NULL) {
899 SCTP_INP_WLOCK(inp);
900 SCTP_INP_DECR_REF(inp);
901 SCTP_INP_WUNLOCK(inp);
902 }
903 }
904
905 if (stcb != NULL) {
906 /* Already have or am bring up an association */
907 SCTP_ASOC_CREATE_UNLOCK(inp);
908 SCTP_TCB_UNLOCK(stcb);
909 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EALREADY);
910 return (EALREADY);
911 }
912 /* We are GOOD to go */
913 stcb = sctp_aloc_assoc(inp, addr, &error, 0, vrf_id,
914 inp->sctp_ep.pre_open_stream_count,
915 inp->sctp_ep.port, p);
916 SCTP_ASOC_CREATE_UNLOCK(inp);
917 if (stcb == NULL) {
918 /* Gak! no memory */
919 return (error);
920 }
921 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
922 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
923 /* Set the connected flag so we can queue data */
924 soisconnecting(so);
925 }
926 stcb->asoc.state = SCTP_STATE_COOKIE_WAIT;
927 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
928
929 /* initialize authentication parameters for the assoc */
930 sctp_initialize_auth_params(inp, stcb);
931
932 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
933 SCTP_TCB_UNLOCK(stcb);
934 return (error);
935 }
936
937 static int
938 sctp6_getaddr(struct socket *so, struct sockaddr **addr)
939 {
940 struct sockaddr_in6 *sin6;
941 struct sctp_inpcb *inp;
942 uint32_t vrf_id;
943 struct sctp_ifa *sctp_ifa;
944
945 int error;
946
947 /*
948 * Do the malloc first in case it blocks.
949 */
950 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof(*sin6));
951 if (sin6 == NULL)
952 return (ENOMEM);
953 sin6->sin6_family = AF_INET6;
954 sin6->sin6_len = sizeof(*sin6);
955
956 inp = (struct sctp_inpcb *)so->so_pcb;
957 if (inp == NULL) {
958 SCTP_FREE_SONAME(sin6);
959 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET);
960 return (ECONNRESET);
961 }
962 SCTP_INP_RLOCK(inp);
963 sin6->sin6_port = inp->sctp_lport;
964 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
965 /* For the bound all case you get back 0 */
966 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
967 struct sctp_tcb *stcb;
968 struct sockaddr_in6 *sin_a6;
969 struct sctp_nets *net;
970 int fnd;
971
972 stcb = LIST_FIRST(&inp->sctp_asoc_list);
973 if (stcb == NULL) {
974 SCTP_INP_RUNLOCK(inp);
975 SCTP_FREE_SONAME(sin6);
976 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
977 return (ENOENT);
978 }
979 fnd = 0;
980 sin_a6 = NULL;
981 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
982 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr;
983 if (sin_a6 == NULL)
984 /* this will make coverity happy */
985 continue;
986
987 if (sin_a6->sin6_family == AF_INET6) {
988 fnd = 1;
989 break;
990 }
991 }
992 if ((!fnd) || (sin_a6 == NULL)) {
993 /* punt */
994 SCTP_INP_RUNLOCK(inp);
995 SCTP_FREE_SONAME(sin6);
996 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
997 return (ENOENT);
998 }
999 vrf_id = inp->def_vrf_id;
1000 sctp_ifa = sctp_source_address_selection(inp, stcb, (sctp_route_t *)&net->ro, net, 0, vrf_id);
1001 if (sctp_ifa) {
1002 sin6->sin6_addr = sctp_ifa->address.sin6.sin6_addr;
1003 }
1004 } else {
1005 /* For the bound all case you get back 0 */
1006 memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr));
1007 }
1008 } else {
1009 /* Take the first IPv6 address in the list */
1010 struct sctp_laddr *laddr;
1011 int fnd = 0;
1012
1013 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1014 if (laddr->ifa->address.sa.sa_family == AF_INET6) {
1015 struct sockaddr_in6 *sin_a;
1016
1017 sin_a = &laddr->ifa->address.sin6;
1018 sin6->sin6_addr = sin_a->sin6_addr;
1019 fnd = 1;
1020 break;
1021 }
1022 }
1023 if (!fnd) {
1024 SCTP_FREE_SONAME(sin6);
1025 SCTP_INP_RUNLOCK(inp);
1026 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
1027 return (ENOENT);
1028 }
1029 }
1030 SCTP_INP_RUNLOCK(inp);
1031 /* Scoping things for v6 */
1032 if ((error = sa6_recoverscope(sin6)) != 0) {
1033 SCTP_FREE_SONAME(sin6);
1034 return (error);
1035 }
1036 (*addr) = (struct sockaddr *)sin6;
1037 return (0);
1038 }
1039
1040 static int
1041 sctp6_peeraddr(struct socket *so, struct sockaddr **addr)
1042 {
1043 struct sockaddr_in6 *sin6;
1044 int fnd;
1045 struct sockaddr_in6 *sin_a6;
1046 struct sctp_inpcb *inp;
1047 struct sctp_tcb *stcb;
1048 struct sctp_nets *net;
1049 int error;
1050
1051 /* Do the malloc first in case it blocks. */
1052 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
1053 if (sin6 == NULL)
1054 return (ENOMEM);
1055 sin6->sin6_family = AF_INET6;
1056 sin6->sin6_len = sizeof(*sin6);
1057
1058 inp = (struct sctp_inpcb *)so->so_pcb;
1059 if ((inp == NULL) ||
1060 ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) {
1061 /* UDP type and listeners will drop out here */
1062 SCTP_FREE_SONAME(sin6);
1063 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOTCONN);
1064 return (ENOTCONN);
1065 }
1066 SCTP_INP_RLOCK(inp);
1067 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1068 if (stcb) {
1069 SCTP_TCB_LOCK(stcb);
1070 }
1071 SCTP_INP_RUNLOCK(inp);
1072 if (stcb == NULL) {
1073 SCTP_FREE_SONAME(sin6);
1074 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET);
1075 return (ECONNRESET);
1076 }
1077 fnd = 0;
1078 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1079 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1080 if (sin_a6->sin6_family == AF_INET6) {
1081 fnd = 1;
1082 sin6->sin6_port = stcb->rport;
1083 sin6->sin6_addr = sin_a6->sin6_addr;
1084 break;
1085 }
1086 }
1087 SCTP_TCB_UNLOCK(stcb);
1088 if (!fnd) {
1089 /* No IPv4 address */
1090 SCTP_FREE_SONAME(sin6);
1091 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT);
1092 return (ENOENT);
1093 }
1094 if ((error = sa6_recoverscope(sin6)) != 0) {
1095 SCTP_FREE_SONAME(sin6);
1096 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, error);
1097 return (error);
1098 }
1099 *addr = (struct sockaddr *)sin6;
1100 return (0);
1101 }
1102
1103 static int
1104 sctp6_in6getaddr(struct socket *so, struct sockaddr **nam)
1105 {
1106 struct in6pcb *inp6 = sotoin6pcb(so);
1107 int error;
1108
1109 if (inp6 == NULL) {
1110 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1111 return (EINVAL);
1112 }
1113 /* allow v6 addresses precedence */
1114 error = sctp6_getaddr(so, nam);
1115 #ifdef INET
1116 if (error) {
1117 struct sockaddr_in6 *sin6;
1118
1119 /* try v4 next if v6 failed */
1120 error = sctp_ingetaddr(so, nam);
1121 if (error) {
1122 return (error);
1123 }
1124 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
1125 if (sin6 == NULL) {
1126 SCTP_FREE_SONAME(*nam);
1127 return (ENOMEM);
1128 }
1129 in6_sin_2_v4mapsin6((struct sockaddr_in *)*nam, sin6);
1130 SCTP_FREE_SONAME(*nam);
1131 *nam = (struct sockaddr *)sin6;
1132 }
1133 #endif
1134 return (error);
1135 }
1136
1137
1138 static int
1139 sctp6_getpeeraddr(struct socket *so, struct sockaddr **nam)
1140 {
1141 struct in6pcb *inp6 = sotoin6pcb(so);
1142 int error;
1143
1144 if (inp6 == NULL) {
1145 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL);
1146 return (EINVAL);
1147 }
1148 /* allow v6 addresses precedence */
1149 error = sctp6_peeraddr(so, nam);
1150 #ifdef INET
1151 if (error) {
1152 struct sockaddr_in6 *sin6;
1153
1154 /* try v4 next if v6 failed */
1155 error = sctp_peeraddr(so, nam);
1156 if (error) {
1157 return (error);
1158 }
1159 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
1160 if (sin6 == NULL) {
1161 SCTP_FREE_SONAME(*nam);
1162 return (ENOMEM);
1163 }
1164 in6_sin_2_v4mapsin6((struct sockaddr_in *)*nam, sin6);
1165 SCTP_FREE_SONAME(*nam);
1166 *nam = (struct sockaddr *)sin6;
1167 }
1168 #endif
1169 return (error);
1170 }
1171
1172 struct pr_usrreqs sctp6_usrreqs = {
1173 .pru_abort = sctp6_abort,
1174 .pru_accept = sctp_accept,
1175 .pru_attach = sctp6_attach,
1176 .pru_bind = sctp6_bind,
1177 .pru_connect = sctp6_connect,
1178 .pru_control = in6_control,
1179 .pru_close = sctp6_close,
1180 .pru_detach = sctp6_close,
1181 .pru_sopoll = sopoll_generic,
1182 .pru_flush = sctp_flush,
1183 .pru_disconnect = sctp6_disconnect,
1184 .pru_listen = sctp_listen,
1185 .pru_peeraddr = sctp6_getpeeraddr,
1186 .pru_send = sctp6_send,
1187 .pru_shutdown = sctp_shutdown,
1188 .pru_sockaddr = sctp6_in6getaddr,
1189 .pru_sosend = sctp_sosend,
1190 .pru_soreceive = sctp_soreceive
1191 };
1192
1193 #endif
Cache object: fd43c2155b6f7db5fe1f650107e9f688
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