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 #include <stdbool.h>
37 #include <stddef.h>
38 #include <stdio.h>
39 #include <string.h>
40 #include <errno.h>
41 #include <stdlib.h>
42 #include <unistd.h>
43 #include <sys/types.h>
44 #include <sys/socket.h>
45 #include <sys/errno.h>
46 #include <sys/syscall.h>
47 #include <sys/uio.h>
48 #include <netinet/in.h>
49 #include <arpa/inet.h>
50 #include <netinet/sctp_uio.h>
51 #include <netinet/sctp.h>
52
53 #ifndef IN6_IS_ADDR_V4MAPPED
54 #define IN6_IS_ADDR_V4MAPPED(a) \
55 ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
56 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
57 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff)))
58 #endif
59
60 #define SCTP_CONTROL_VEC_SIZE_RCV 16384
61
62
63 static void
in6_sin6_2_sin(struct sockaddr_in * sin,struct sockaddr_in6 * sin6)64 in6_sin6_2_sin(struct sockaddr_in *sin, struct sockaddr_in6 *sin6)
65 {
66 bzero(sin, sizeof(*sin));
67 sin->sin_len = sizeof(struct sockaddr_in);
68 sin->sin_family = AF_INET;
69 sin->sin_port = sin6->sin6_port;
70 sin->sin_addr.s_addr = sin6->sin6_addr.__u6_addr.__u6_addr32[3];
71 }
72
73 int
sctp_getaddrlen(sa_family_t family)74 sctp_getaddrlen(sa_family_t family)
75 {
76 int ret, sd;
77 socklen_t siz;
78 struct sctp_assoc_value av;
79
80 av.assoc_value = family;
81 siz = sizeof(av);
82 #if defined(AF_INET)
83 sd = socket(AF_INET, SOCK_SEQPACKET, IPPROTO_SCTP);
84 #elif defined(AF_INET6)
85 sd = socket(AF_INET6, SOCK_SEQPACKET, IPPROTO_SCTP);
86 #else
87 sd = -1;
88 #endif
89 if (sd == -1) {
90 return (-1);
91 }
92 ret = getsockopt(sd, IPPROTO_SCTP, SCTP_GET_ADDR_LEN, &av, &siz);
93 close(sd);
94 if (ret == 0) {
95 return ((int)av.assoc_value);
96 } else {
97 return (-1);
98 }
99 }
100
101 int
sctp_connectx(int sd,const struct sockaddr * addrs,int addrcnt,sctp_assoc_t * id)102 sctp_connectx(int sd, const struct sockaddr *addrs, int addrcnt,
103 sctp_assoc_t *id)
104 {
105 char *buf;
106 int i, ret, *aa;
107 char *cpto;
108 const struct sockaddr *at;
109 size_t len;
110
111 /* validate the address count and list */
112 if ((addrs == NULL) || (addrcnt <= 0)) {
113 errno = EINVAL;
114 return (-1);
115 }
116 if ((buf = malloc(sizeof(int) + (size_t)addrcnt * sizeof(struct sockaddr_in6))) == NULL) {
117 errno = E2BIG;
118 return (-1);
119 }
120 len = sizeof(int);
121 at = addrs;
122 cpto = buf + sizeof(int);
123 /* validate all the addresses and get the size */
124 for (i = 0; i < addrcnt; i++) {
125 switch (at->sa_family) {
126 case AF_INET:
127 if (at->sa_len != sizeof(struct sockaddr_in)) {
128 free(buf);
129 errno = EINVAL;
130 return (-1);
131 }
132 memcpy(cpto, at, sizeof(struct sockaddr_in));
133 cpto = ((caddr_t)cpto + sizeof(struct sockaddr_in));
134 len += sizeof(struct sockaddr_in);
135 break;
136 case AF_INET6:
137 if (at->sa_len != sizeof(struct sockaddr_in6)) {
138 free(buf);
139 errno = EINVAL;
140 return (-1);
141 }
142 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)at)->sin6_addr)) {
143 in6_sin6_2_sin((struct sockaddr_in *)cpto, (struct sockaddr_in6 *)at);
144 cpto = ((caddr_t)cpto + sizeof(struct sockaddr_in));
145 len += sizeof(struct sockaddr_in);
146 } else {
147 memcpy(cpto, at, sizeof(struct sockaddr_in6));
148 cpto = ((caddr_t)cpto + sizeof(struct sockaddr_in6));
149 len += sizeof(struct sockaddr_in6);
150 }
151 break;
152 default:
153 free(buf);
154 errno = EINVAL;
155 return (-1);
156 }
157 at = (struct sockaddr *)((caddr_t)at + at->sa_len);
158 }
159 aa = (int *)buf;
160 *aa = addrcnt;
161 ret = setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X, (void *)buf,
162 (socklen_t)len);
163 if ((ret == 0) && (id != NULL)) {
164 *id = *(sctp_assoc_t *)buf;
165 }
166 free(buf);
167 return (ret);
168 }
169
170 int
sctp_bindx(int sd,struct sockaddr * addrs,int addrcnt,int flags)171 sctp_bindx(int sd, struct sockaddr *addrs, int addrcnt, int flags)
172 {
173 struct sockaddr *sa;
174 struct sockaddr_in *sin;
175 struct sockaddr_in6 *sin6;
176 int i;
177 uint16_t sport;
178 bool fix_port;
179
180 /* validate the flags */
181 if ((flags != SCTP_BINDX_ADD_ADDR) &&
182 (flags != SCTP_BINDX_REM_ADDR)) {
183 errno = EFAULT;
184 return (-1);
185 }
186 /* validate the address count and list */
187 if ((addrcnt <= 0) || (addrs == NULL)) {
188 errno = EINVAL;
189 return (-1);
190 }
191 sport = 0;
192 fix_port = false;
193 /* First pre-screen the addresses */
194 sa = addrs;
195 for (i = 0; i < addrcnt; i++) {
196 switch (sa->sa_family) {
197 case AF_INET:
198 if (sa->sa_len != sizeof(struct sockaddr_in)) {
199 errno = EINVAL;
200 return (-1);
201 }
202 sin = (struct sockaddr_in *)sa;
203 if (sin->sin_port) {
204 /* non-zero port, check or save */
205 if (sport) {
206 /* Check against our port */
207 if (sport != sin->sin_port) {
208 errno = EINVAL;
209 return (-1);
210 }
211 } else {
212 /* save off the port */
213 sport = sin->sin_port;
214 fix_port = (i > 0);
215 }
216 }
217 break;
218 case AF_INET6:
219 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
220 errno = EINVAL;
221 return (-1);
222 }
223 sin6 = (struct sockaddr_in6 *)sa;
224 if (sin6->sin6_port) {
225 /* non-zero port, check or save */
226 if (sport) {
227 /* Check against our port */
228 if (sport != sin6->sin6_port) {
229 errno = EINVAL;
230 return (-1);
231 }
232 } else {
233 /* save off the port */
234 sport = sin6->sin6_port;
235 fix_port = (i > 0);
236 }
237 }
238 break;
239 default:
240 /* Invalid address family specified. */
241 errno = EAFNOSUPPORT;
242 return (-1);
243 }
244 sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len);
245 }
246 sa = addrs;
247 for (i = 0; i < addrcnt; i++) {
248 /*
249 * Now, if there was a port mentioned, assure that the first
250 * address has that port to make sure it fails or succeeds
251 * correctly.
252 */
253 if (fix_port) {
254 switch (sa->sa_family) {
255 case AF_INET:
256 ((struct sockaddr_in *)sa)->sin_port = sport;
257 break;
258 case AF_INET6:
259 ((struct sockaddr_in6 *)sa)->sin6_port = sport;
260 break;
261 }
262 fix_port = false;
263 }
264 if (setsockopt(sd, IPPROTO_SCTP, flags, sa, sa->sa_len) != 0) {
265 return (-1);
266 }
267 sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len);
268 }
269 return (0);
270 }
271
272 int
sctp_opt_info(int sd,sctp_assoc_t id,int opt,void * arg,socklen_t * size)273 sctp_opt_info(int sd, sctp_assoc_t id, int opt, void *arg, socklen_t *size)
274 {
275 if (arg == NULL) {
276 errno = EINVAL;
277 return (-1);
278 }
279 if ((id == SCTP_CURRENT_ASSOC) ||
280 (id == SCTP_ALL_ASSOC)) {
281 errno = EINVAL;
282 return (-1);
283 }
284 switch (opt) {
285 case SCTP_RTOINFO:
286 ((struct sctp_rtoinfo *)arg)->srto_assoc_id = id;
287 break;
288 case SCTP_ASSOCINFO:
289 ((struct sctp_assocparams *)arg)->sasoc_assoc_id = id;
290 break;
291 case SCTP_DEFAULT_SEND_PARAM:
292 ((struct sctp_assocparams *)arg)->sasoc_assoc_id = id;
293 break;
294 case SCTP_PRIMARY_ADDR:
295 ((struct sctp_setprim *)arg)->ssp_assoc_id = id;
296 break;
297 case SCTP_PEER_ADDR_PARAMS:
298 ((struct sctp_paddrparams *)arg)->spp_assoc_id = id;
299 break;
300 case SCTP_MAXSEG:
301 ((struct sctp_assoc_value *)arg)->assoc_id = id;
302 break;
303 case SCTP_AUTH_KEY:
304 ((struct sctp_authkey *)arg)->sca_assoc_id = id;
305 break;
306 case SCTP_AUTH_ACTIVE_KEY:
307 ((struct sctp_authkeyid *)arg)->scact_assoc_id = id;
308 break;
309 case SCTP_DELAYED_SACK:
310 ((struct sctp_sack_info *)arg)->sack_assoc_id = id;
311 break;
312 case SCTP_CONTEXT:
313 ((struct sctp_assoc_value *)arg)->assoc_id = id;
314 break;
315 case SCTP_STATUS:
316 ((struct sctp_status *)arg)->sstat_assoc_id = id;
317 break;
318 case SCTP_GET_PEER_ADDR_INFO:
319 ((struct sctp_paddrinfo *)arg)->spinfo_assoc_id = id;
320 break;
321 case SCTP_PEER_AUTH_CHUNKS:
322 ((struct sctp_authchunks *)arg)->gauth_assoc_id = id;
323 break;
324 case SCTP_LOCAL_AUTH_CHUNKS:
325 ((struct sctp_authchunks *)arg)->gauth_assoc_id = id;
326 break;
327 case SCTP_TIMEOUTS:
328 ((struct sctp_timeouts *)arg)->stimo_assoc_id = id;
329 break;
330 case SCTP_EVENT:
331 ((struct sctp_event *)arg)->se_assoc_id = id;
332 break;
333 case SCTP_DEFAULT_SNDINFO:
334 ((struct sctp_sndinfo *)arg)->snd_assoc_id = id;
335 break;
336 case SCTP_DEFAULT_PRINFO:
337 ((struct sctp_default_prinfo *)arg)->pr_assoc_id = id;
338 break;
339 case SCTP_PEER_ADDR_THLDS:
340 ((struct sctp_paddrthlds *)arg)->spt_assoc_id = id;
341 break;
342 case SCTP_REMOTE_UDP_ENCAPS_PORT:
343 ((struct sctp_udpencaps *)arg)->sue_assoc_id = id;
344 break;
345 case SCTP_ECN_SUPPORTED:
346 ((struct sctp_assoc_value *)arg)->assoc_id = id;
347 break;
348 case SCTP_PR_SUPPORTED:
349 ((struct sctp_assoc_value *)arg)->assoc_id = id;
350 break;
351 case SCTP_AUTH_SUPPORTED:
352 ((struct sctp_assoc_value *)arg)->assoc_id = id;
353 break;
354 case SCTP_ASCONF_SUPPORTED:
355 ((struct sctp_assoc_value *)arg)->assoc_id = id;
356 break;
357 case SCTP_RECONFIG_SUPPORTED:
358 ((struct sctp_assoc_value *)arg)->assoc_id = id;
359 break;
360 case SCTP_NRSACK_SUPPORTED:
361 ((struct sctp_assoc_value *)arg)->assoc_id = id;
362 break;
363 case SCTP_PKTDROP_SUPPORTED:
364 ((struct sctp_assoc_value *)arg)->assoc_id = id;
365 break;
366 case SCTP_MAX_BURST:
367 ((struct sctp_assoc_value *)arg)->assoc_id = id;
368 break;
369 case SCTP_ENABLE_STREAM_RESET:
370 ((struct sctp_assoc_value *)arg)->assoc_id = id;
371 break;
372 case SCTP_PR_STREAM_STATUS:
373 ((struct sctp_prstatus *)arg)->sprstat_assoc_id = id;
374 break;
375 case SCTP_PR_ASSOC_STATUS:
376 ((struct sctp_prstatus *)arg)->sprstat_assoc_id = id;
377 break;
378 case SCTP_MAX_CWND:
379 ((struct sctp_assoc_value *)arg)->assoc_id = id;
380 break;
381 default:
382 break;
383 }
384 return (getsockopt(sd, IPPROTO_SCTP, opt, arg, size));
385 }
386
387 int
sctp_getpaddrs(int sd,sctp_assoc_t id,struct sockaddr ** raddrs)388 sctp_getpaddrs(int sd, sctp_assoc_t id, struct sockaddr **raddrs)
389 {
390 struct sctp_getaddresses *addrs;
391 struct sockaddr *sa;
392 caddr_t lim;
393 socklen_t opt_len;
394 uint32_t size_of_addresses;
395 int cnt;
396
397 if (raddrs == NULL) {
398 errno = EFAULT;
399 return (-1);
400 }
401 /* When calling getsockopt(), the value contains the assoc_id. */
402 size_of_addresses = (uint32_t)id;
403 opt_len = (socklen_t)sizeof(uint32_t);
404 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_REMOTE_ADDR_SIZE,
405 &size_of_addresses, &opt_len) != 0) {
406 if (errno == ENOENT) {
407 return (0);
408 } else {
409 return (-1);
410 }
411 }
412 opt_len = (socklen_t)((size_t)size_of_addresses + sizeof(struct sctp_getaddresses));
413 addrs = calloc(1, (size_t)opt_len);
414 if (addrs == NULL) {
415 errno = ENOMEM;
416 return (-1);
417 }
418 addrs->sget_assoc_id = id;
419 /* Now lets get the array of addresses */
420 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_PEER_ADDRESSES,
421 addrs, &opt_len) != 0) {
422 free(addrs);
423 return (-1);
424 }
425 *raddrs = &addrs->addr[0].sa;
426 cnt = 0;
427 sa = &addrs->addr[0].sa;
428 lim = (caddr_t)addrs + opt_len;
429 while (((caddr_t)sa < lim) && (sa->sa_len > 0)) {
430 sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len);
431 cnt++;
432 }
433 return (cnt);
434 }
435
436 void
sctp_freepaddrs(struct sockaddr * addrs)437 sctp_freepaddrs(struct sockaddr *addrs)
438 {
439 void *fr_addr;
440
441 /* Take away the hidden association id */
442 fr_addr = (void *)((caddr_t)addrs - offsetof(struct sctp_getaddresses, addr));
443 /* Now free it */
444 free(fr_addr);
445 }
446
447 int
sctp_getladdrs(int sd,sctp_assoc_t id,struct sockaddr ** raddrs)448 sctp_getladdrs(int sd, sctp_assoc_t id, struct sockaddr **raddrs)
449 {
450 struct sctp_getaddresses *addrs;
451 struct sockaddr *sa;
452 caddr_t lim;
453 socklen_t opt_len;
454 uint32_t size_of_addresses;
455 int cnt;
456
457 if (raddrs == NULL) {
458 errno = EFAULT;
459 return (-1);
460 }
461 size_of_addresses = 0;
462 opt_len = (socklen_t)sizeof(uint32_t);
463 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_LOCAL_ADDR_SIZE,
464 &size_of_addresses, &opt_len) != 0) {
465 return (-1);
466 }
467 opt_len = (socklen_t)((size_t)size_of_addresses + sizeof(struct sctp_getaddresses));
468 addrs = calloc(1, (size_t)opt_len);
469 if (addrs == NULL) {
470 errno = ENOMEM;
471 return (-1);
472 }
473 addrs->sget_assoc_id = id;
474 /* Now lets get the array of addresses */
475 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_LOCAL_ADDRESSES, addrs,
476 &opt_len) != 0) {
477 free(addrs);
478 return (-1);
479 }
480 if (size_of_addresses == 0) {
481 free(addrs);
482 return (0);
483 }
484 *raddrs = &addrs->addr[0].sa;
485 cnt = 0;
486 sa = &addrs->addr[0].sa;
487 lim = (caddr_t)addrs + opt_len;
488 while (((caddr_t)sa < lim) && (sa->sa_len > 0)) {
489 sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len);
490 cnt++;
491 }
492 return (cnt);
493 }
494
495 void
sctp_freeladdrs(struct sockaddr * addrs)496 sctp_freeladdrs(struct sockaddr *addrs)
497 {
498 void *fr_addr;
499
500 /* Take away the hidden association id */
501 fr_addr = (void *)((caddr_t)addrs - offsetof(struct sctp_getaddresses, addr));
502 /* Now free it */
503 free(fr_addr);
504 }
505
506 ssize_t
sctp_sendmsg(int s,const void * data,size_t len,const struct sockaddr * to,socklen_t tolen,uint32_t ppid,uint32_t flags,uint16_t stream_no,uint32_t timetolive,uint32_t context)507 sctp_sendmsg(int s,
508 const void *data,
509 size_t len,
510 const struct sockaddr *to,
511 socklen_t tolen,
512 uint32_t ppid,
513 uint32_t flags,
514 uint16_t stream_no,
515 uint32_t timetolive,
516 uint32_t context)
517 {
518 #ifdef SYS_sctp_generic_sendmsg
519 struct sctp_sndrcvinfo sinfo;
520
521 memset(&sinfo, 0, sizeof(struct sctp_sndrcvinfo));
522 sinfo.sinfo_ppid = ppid;
523 sinfo.sinfo_flags = flags;
524 sinfo.sinfo_stream = stream_no;
525 sinfo.sinfo_timetolive = timetolive;
526 sinfo.sinfo_context = context;
527 sinfo.sinfo_assoc_id = 0;
528 return (syscall(SYS_sctp_generic_sendmsg, s,
529 data, len, to, tolen, &sinfo, 0));
530 #else
531 struct msghdr msg;
532 struct sctp_sndrcvinfo *sinfo;
533 struct iovec iov;
534 char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))];
535 struct cmsghdr *cmsg;
536 struct sockaddr *who = NULL;
537 union {
538 struct sockaddr_in in;
539 struct sockaddr_in6 in6;
540 } addr;
541
542 if ((tolen > 0) &&
543 ((to == NULL) || (tolen < sizeof(struct sockaddr)))) {
544 errno = EINVAL;
545 return (-1);
546 }
547 if ((to != NULL) && (tolen > 0)) {
548 switch (to->sa_family) {
549 case AF_INET:
550 if (tolen != sizeof(struct sockaddr_in)) {
551 errno = EINVAL;
552 return (-1);
553 }
554 if ((to->sa_len > 0) &&
555 (to->sa_len != sizeof(struct sockaddr_in))) {
556 errno = EINVAL;
557 return (-1);
558 }
559 memcpy(&addr, to, sizeof(struct sockaddr_in));
560 addr.in.sin_len = sizeof(struct sockaddr_in);
561 break;
562 case AF_INET6:
563 if (tolen != sizeof(struct sockaddr_in6)) {
564 errno = EINVAL;
565 return (-1);
566 }
567 if ((to->sa_len > 0) &&
568 (to->sa_len != sizeof(struct sockaddr_in6))) {
569 errno = EINVAL;
570 return (-1);
571 }
572 memcpy(&addr, to, sizeof(struct sockaddr_in6));
573 addr.in6.sin6_len = sizeof(struct sockaddr_in6);
574 break;
575 default:
576 errno = EAFNOSUPPORT;
577 return (-1);
578 }
579 who = (struct sockaddr *)&addr;
580 }
581
582 iov.iov_base = (char *)data;
583 iov.iov_len = len;
584
585 if (who) {
586 msg.msg_name = (caddr_t)who;
587 msg.msg_namelen = who->sa_len;
588 } else {
589 msg.msg_name = (caddr_t)NULL;
590 msg.msg_namelen = 0;
591 }
592 msg.msg_iov = &iov;
593 msg.msg_iovlen = 1;
594 msg.msg_control = cmsgbuf;
595 msg.msg_controllen = CMSG_SPACE(sizeof(struct sctp_sndrcvinfo));
596 msg.msg_flags = 0;
597 cmsg = (struct cmsghdr *)cmsgbuf;
598 cmsg->cmsg_level = IPPROTO_SCTP;
599 cmsg->cmsg_type = SCTP_SNDRCV;
600 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo));
601 sinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg);
602 memset(sinfo, 0, sizeof(struct sctp_sndrcvinfo));
603 sinfo->sinfo_stream = stream_no;
604 sinfo->sinfo_ssn = 0;
605 sinfo->sinfo_flags = flags;
606 sinfo->sinfo_ppid = ppid;
607 sinfo->sinfo_context = context;
608 sinfo->sinfo_assoc_id = 0;
609 sinfo->sinfo_timetolive = timetolive;
610 return (sendmsg(s, &msg, 0));
611 #endif
612 }
613
614
615 sctp_assoc_t
sctp_getassocid(int sd,struct sockaddr * sa)616 sctp_getassocid(int sd, struct sockaddr *sa)
617 {
618 struct sctp_paddrinfo sp;
619 socklen_t siz;
620
621 /* First get the assoc id */
622 siz = sizeof(sp);
623 memset(&sp, 0, sizeof(sp));
624 memcpy((caddr_t)&sp.spinfo_address, sa, sa->sa_len);
625 if (getsockopt(sd, IPPROTO_SCTP,
626 SCTP_GET_PEER_ADDR_INFO, &sp, &siz) != 0) {
627 /* We depend on the fact that 0 can never be returned */
628 return ((sctp_assoc_t)0);
629 }
630 return (sp.spinfo_assoc_id);
631 }
632
633 ssize_t
sctp_send(int sd,const void * data,size_t len,const struct sctp_sndrcvinfo * sinfo,int flags)634 sctp_send(int sd, const void *data, size_t len,
635 const struct sctp_sndrcvinfo *sinfo,
636 int flags)
637 {
638
639 #ifdef SYS_sctp_generic_sendmsg
640 struct sockaddr *to = NULL;
641
642 return (syscall(SYS_sctp_generic_sendmsg, sd,
643 data, len, to, 0, sinfo, flags));
644 #else
645 struct msghdr msg;
646 struct iovec iov;
647 char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))];
648 struct cmsghdr *cmsg;
649
650 if (sinfo == NULL) {
651 errno = EINVAL;
652 return (-1);
653 }
654 iov.iov_base = (char *)data;
655 iov.iov_len = len;
656
657 msg.msg_name = NULL;
658 msg.msg_namelen = 0;
659 msg.msg_iov = &iov;
660 msg.msg_iovlen = 1;
661 msg.msg_control = cmsgbuf;
662 msg.msg_controllen = CMSG_SPACE(sizeof(struct sctp_sndrcvinfo));
663 msg.msg_flags = 0;
664 cmsg = (struct cmsghdr *)cmsgbuf;
665 cmsg->cmsg_level = IPPROTO_SCTP;
666 cmsg->cmsg_type = SCTP_SNDRCV;
667 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo));
668 memcpy(CMSG_DATA(cmsg), sinfo, sizeof(struct sctp_sndrcvinfo));
669 return (sendmsg(sd, &msg, flags));
670 #endif
671 }
672
673
674
675 ssize_t
sctp_sendx(int sd,const void * msg,size_t msg_len,struct sockaddr * addrs,int addrcnt,struct sctp_sndrcvinfo * sinfo,int flags)676 sctp_sendx(int sd, const void *msg, size_t msg_len,
677 struct sockaddr *addrs, int addrcnt,
678 struct sctp_sndrcvinfo *sinfo,
679 int flags)
680 {
681 struct sctp_sndrcvinfo __sinfo;
682 ssize_t ret;
683 int i, cnt, *aa, saved_errno;
684 char *buf;
685 int no_end_cx = 0;
686 size_t len, add_len;
687 struct sockaddr *at;
688
689 if (addrs == NULL) {
690 errno = EINVAL;
691 return (-1);
692 }
693 #ifdef SYS_sctp_generic_sendmsg
694 if (addrcnt == 1) {
695 socklen_t l;
696 ssize_t ret;
697
698 /*
699 * Quick way, we don't need to do a connectx so lets use the
700 * syscall directly.
701 */
702 l = addrs->sa_len;
703 ret = syscall(SYS_sctp_generic_sendmsg, sd,
704 msg, msg_len, addrs, l, sinfo, flags);
705 if ((ret >= 0) && (sinfo != NULL)) {
706 sinfo->sinfo_assoc_id = sctp_getassocid(sd, addrs);
707 }
708 return (ret);
709 }
710 #endif
711
712 len = sizeof(int);
713 at = addrs;
714 cnt = 0;
715 /* validate all the addresses and get the size */
716 for (i = 0; i < addrcnt; i++) {
717 if (at->sa_family == AF_INET) {
718 add_len = sizeof(struct sockaddr_in);
719 } else if (at->sa_family == AF_INET6) {
720 add_len = sizeof(struct sockaddr_in6);
721 } else {
722 errno = EINVAL;
723 return (-1);
724 }
725 len += add_len;
726 at = (struct sockaddr *)((caddr_t)at + add_len);
727 cnt++;
728 }
729 /* do we have any? */
730 if (cnt == 0) {
731 errno = EINVAL;
732 return (-1);
733 }
734 buf = malloc(len);
735 if (buf == NULL) {
736 errno = ENOMEM;
737 return (-1);
738 }
739 aa = (int *)buf;
740 *aa = cnt;
741 aa++;
742 memcpy((caddr_t)aa, addrs, (size_t)(len - sizeof(int)));
743 ret = setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_DELAYED, (void *)buf,
744 (socklen_t)len);
745
746 free(buf);
747 if (ret != 0) {
748 if (errno == EALREADY) {
749 no_end_cx = 1;
750 goto continue_send;
751 }
752 return (ret);
753 }
754 continue_send:
755 if (sinfo == NULL) {
756 sinfo = &__sinfo;
757 memset(&__sinfo, 0, sizeof(__sinfo));
758 }
759 sinfo->sinfo_assoc_id = sctp_getassocid(sd, addrs);
760 if (sinfo->sinfo_assoc_id == 0) {
761 (void)setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_COMPLETE, (void *)addrs,
762 (socklen_t)addrs->sa_len);
763 errno = ENOENT;
764 return (-1);
765 }
766 ret = sctp_send(sd, msg, msg_len, sinfo, flags);
767 saved_errno = errno;
768 if (no_end_cx == 0)
769 (void)setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_COMPLETE, (void *)addrs,
770 (socklen_t)addrs->sa_len);
771
772 errno = saved_errno;
773 return (ret);
774 }
775
776 ssize_t
sctp_sendmsgx(int sd,const void * msg,size_t len,struct sockaddr * addrs,int addrcnt,uint32_t ppid,uint32_t flags,uint16_t stream_no,uint32_t timetolive,uint32_t context)777 sctp_sendmsgx(int sd,
778 const void *msg,
779 size_t len,
780 struct sockaddr *addrs,
781 int addrcnt,
782 uint32_t ppid,
783 uint32_t flags,
784 uint16_t stream_no,
785 uint32_t timetolive,
786 uint32_t context)
787 {
788 struct sctp_sndrcvinfo sinfo;
789
790 memset((void *)&sinfo, 0, sizeof(struct sctp_sndrcvinfo));
791 sinfo.sinfo_ppid = ppid;
792 sinfo.sinfo_flags = flags;
793 sinfo.sinfo_stream = stream_no;
794 sinfo.sinfo_timetolive = timetolive;
795 sinfo.sinfo_context = context;
796 return (sctp_sendx(sd, msg, len, addrs, addrcnt, &sinfo, 0));
797 }
798
799 ssize_t
sctp_recvmsg(int s,void * dbuf,size_t len,struct sockaddr * from,socklen_t * fromlen,struct sctp_sndrcvinfo * sinfo,int * msg_flags)800 sctp_recvmsg(int s,
801 void *dbuf,
802 size_t len,
803 struct sockaddr *from,
804 socklen_t *fromlen,
805 struct sctp_sndrcvinfo *sinfo,
806 int *msg_flags)
807 {
808 #ifdef SYS_sctp_generic_recvmsg
809 struct iovec iov;
810
811 iov.iov_base = dbuf;
812 iov.iov_len = len;
813 return (syscall(SYS_sctp_generic_recvmsg, s,
814 &iov, 1, from, fromlen, sinfo, msg_flags));
815 #else
816 ssize_t sz;
817 struct msghdr msg;
818 struct iovec iov;
819 char cmsgbuf[SCTP_CONTROL_VEC_SIZE_RCV];
820 struct cmsghdr *cmsg;
821
822 if (msg_flags == NULL) {
823 errno = EINVAL;
824 return (-1);
825 }
826 iov.iov_base = dbuf;
827 iov.iov_len = len;
828 msg.msg_name = (caddr_t)from;
829 if (fromlen == NULL)
830 msg.msg_namelen = 0;
831 else
832 msg.msg_namelen = *fromlen;
833 msg.msg_iov = &iov;
834 msg.msg_iovlen = 1;
835 msg.msg_control = cmsgbuf;
836 msg.msg_controllen = sizeof(cmsgbuf);
837 msg.msg_flags = 0;
838 sz = recvmsg(s, &msg, *msg_flags);
839 *msg_flags = msg.msg_flags;
840 if (sz <= 0) {
841 return (sz);
842 }
843 if (sinfo) {
844 sinfo->sinfo_assoc_id = 0;
845 }
846 if ((msg.msg_controllen > 0) && (sinfo != NULL)) {
847 /*
848 * parse through and see if we find the sctp_sndrcvinfo (if
849 * the user wants it).
850 */
851 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) {
852 if (cmsg->cmsg_level != IPPROTO_SCTP) {
853 continue;
854 }
855 if (cmsg->cmsg_type == SCTP_SNDRCV) {
856 memcpy(sinfo, CMSG_DATA(cmsg), sizeof(struct sctp_sndrcvinfo));
857 break;
858 }
859 if (cmsg->cmsg_type == SCTP_EXTRCV) {
860 /*
861 * Let's hope that the user provided enough
862 * enough memory. At least he asked for more
863 * information.
864 */
865 memcpy(sinfo, CMSG_DATA(cmsg), sizeof(struct sctp_extrcvinfo));
866 break;
867 }
868 }
869 }
870 return (sz);
871 #endif
872 }
873
874 ssize_t
sctp_recvv(int sd,const struct iovec * iov,int iovlen,struct sockaddr * from,socklen_t * fromlen,void * info,socklen_t * infolen,unsigned int * infotype,int * flags)875 sctp_recvv(int sd,
876 const struct iovec *iov,
877 int iovlen,
878 struct sockaddr *from,
879 socklen_t *fromlen,
880 void *info,
881 socklen_t *infolen,
882 unsigned int *infotype,
883 int *flags)
884 {
885 char cmsgbuf[SCTP_CONTROL_VEC_SIZE_RCV];
886 struct msghdr msg;
887 struct cmsghdr *cmsg;
888 ssize_t ret;
889 struct sctp_rcvinfo *rcvinfo;
890 struct sctp_nxtinfo *nxtinfo;
891
892 if (((info != NULL) && (infolen == NULL)) ||
893 ((info == NULL) && (infolen != NULL) && (*infolen != 0)) ||
894 ((info != NULL) && (infotype == NULL))) {
895 errno = EINVAL;
896 return (-1);
897 }
898 if (infotype) {
899 *infotype = SCTP_RECVV_NOINFO;
900 }
901 msg.msg_name = from;
902 if (fromlen == NULL) {
903 msg.msg_namelen = 0;
904 } else {
905 msg.msg_namelen = *fromlen;
906 }
907 msg.msg_iov = (struct iovec *)iov;
908 msg.msg_iovlen = iovlen;
909 msg.msg_control = cmsgbuf;
910 msg.msg_controllen = sizeof(cmsgbuf);
911 msg.msg_flags = 0;
912 ret = recvmsg(sd, &msg, *flags);
913 *flags = msg.msg_flags;
914 if ((ret > 0) &&
915 (msg.msg_controllen > 0) &&
916 (infotype != NULL) &&
917 (infolen != NULL) &&
918 (*infolen > 0)) {
919 rcvinfo = NULL;
920 nxtinfo = NULL;
921 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) {
922 if (cmsg->cmsg_level != IPPROTO_SCTP) {
923 continue;
924 }
925 if (cmsg->cmsg_type == SCTP_RCVINFO) {
926 rcvinfo = (struct sctp_rcvinfo *)CMSG_DATA(cmsg);
927 if (nxtinfo != NULL) {
928 break;
929 } else {
930 continue;
931 }
932 }
933 if (cmsg->cmsg_type == SCTP_NXTINFO) {
934 nxtinfo = (struct sctp_nxtinfo *)CMSG_DATA(cmsg);
935 if (rcvinfo != NULL) {
936 break;
937 } else {
938 continue;
939 }
940 }
941 }
942 if (rcvinfo != NULL) {
943 if ((nxtinfo != NULL) && (*infolen >= sizeof(struct sctp_recvv_rn))) {
944 struct sctp_recvv_rn *rn_info;
945
946 rn_info = (struct sctp_recvv_rn *)info;
947 rn_info->recvv_rcvinfo = *rcvinfo;
948 rn_info->recvv_nxtinfo = *nxtinfo;
949 *infolen = (socklen_t)sizeof(struct sctp_recvv_rn);
950 *infotype = SCTP_RECVV_RN;
951 } else if (*infolen >= sizeof(struct sctp_rcvinfo)) {
952 memcpy(info, rcvinfo, sizeof(struct sctp_rcvinfo));
953 *infolen = (socklen_t)sizeof(struct sctp_rcvinfo);
954 *infotype = SCTP_RECVV_RCVINFO;
955 }
956 } else if (nxtinfo != NULL) {
957 if (*infolen >= sizeof(struct sctp_nxtinfo)) {
958 memcpy(info, nxtinfo, sizeof(struct sctp_nxtinfo));
959 *infolen = (socklen_t)sizeof(struct sctp_nxtinfo);
960 *infotype = SCTP_RECVV_NXTINFO;
961 }
962 }
963 }
964 return (ret);
965 }
966
967 ssize_t
sctp_sendv(int sd,const struct iovec * iov,int iovcnt,struct sockaddr * addrs,int addrcnt,void * info,socklen_t infolen,unsigned int infotype,int flags)968 sctp_sendv(int sd,
969 const struct iovec *iov, int iovcnt,
970 struct sockaddr *addrs, int addrcnt,
971 void *info, socklen_t infolen, unsigned int infotype,
972 int flags)
973 {
974 ssize_t ret;
975 int i;
976 socklen_t addr_len;
977 struct msghdr msg;
978 in_port_t port;
979 struct sctp_sendv_spa *spa_info;
980 struct cmsghdr *cmsg;
981 char *cmsgbuf;
982 struct sockaddr *addr;
983 struct sockaddr_in *addr_in;
984 struct sockaddr_in6 *addr_in6;
985 sctp_assoc_t *assoc_id;
986
987 if ((addrcnt < 0) ||
988 (iovcnt < 0) ||
989 ((addrs == NULL) && (addrcnt > 0)) ||
990 ((addrs != NULL) && (addrcnt == 0)) ||
991 ((iov == NULL) && (iovcnt > 0)) ||
992 ((iov != NULL) && (iovcnt == 0))) {
993 errno = EINVAL;
994 return (-1);
995 }
996 cmsgbuf = malloc(CMSG_SPACE(sizeof(struct sctp_sndinfo)) +
997 CMSG_SPACE(sizeof(struct sctp_prinfo)) +
998 CMSG_SPACE(sizeof(struct sctp_authinfo)) +
999 (size_t)addrcnt * CMSG_SPACE(sizeof(struct in6_addr)));
1000 if (cmsgbuf == NULL) {
1001 errno = ENOMEM;
1002 return (-1);
1003 }
1004 assoc_id = NULL;
1005 msg.msg_control = cmsgbuf;
1006 msg.msg_controllen = 0;
1007 cmsg = (struct cmsghdr *)cmsgbuf;
1008 switch (infotype) {
1009 case SCTP_SENDV_NOINFO:
1010 if ((infolen != 0) || (info != NULL)) {
1011 free(cmsgbuf);
1012 errno = EINVAL;
1013 return (-1);
1014 }
1015 break;
1016 case SCTP_SENDV_SNDINFO:
1017 if ((info == NULL) || (infolen < sizeof(struct sctp_sndinfo))) {
1018 free(cmsgbuf);
1019 errno = EINVAL;
1020 return (-1);
1021 }
1022 cmsg->cmsg_level = IPPROTO_SCTP;
1023 cmsg->cmsg_type = SCTP_SNDINFO;
1024 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndinfo));
1025 memcpy(CMSG_DATA(cmsg), info, sizeof(struct sctp_sndinfo));
1026 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndinfo));
1027 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_sndinfo)));
1028 assoc_id = &(((struct sctp_sndinfo *)info)->snd_assoc_id);
1029 break;
1030 case SCTP_SENDV_PRINFO:
1031 if ((info == NULL) || (infolen < sizeof(struct sctp_prinfo))) {
1032 free(cmsgbuf);
1033 errno = EINVAL;
1034 return (-1);
1035 }
1036 cmsg->cmsg_level = IPPROTO_SCTP;
1037 cmsg->cmsg_type = SCTP_PRINFO;
1038 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_prinfo));
1039 memcpy(CMSG_DATA(cmsg), info, sizeof(struct sctp_prinfo));
1040 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_prinfo));
1041 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_prinfo)));
1042 break;
1043 case SCTP_SENDV_AUTHINFO:
1044 if ((info == NULL) || (infolen < sizeof(struct sctp_authinfo))) {
1045 free(cmsgbuf);
1046 errno = EINVAL;
1047 return (-1);
1048 }
1049 cmsg->cmsg_level = IPPROTO_SCTP;
1050 cmsg->cmsg_type = SCTP_AUTHINFO;
1051 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_authinfo));
1052 memcpy(CMSG_DATA(cmsg), info, sizeof(struct sctp_authinfo));
1053 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_authinfo));
1054 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_authinfo)));
1055 break;
1056 case SCTP_SENDV_SPA:
1057 if ((info == NULL) || (infolen < sizeof(struct sctp_sendv_spa))) {
1058 free(cmsgbuf);
1059 errno = EINVAL;
1060 return (-1);
1061 }
1062 spa_info = (struct sctp_sendv_spa *)info;
1063 if (spa_info->sendv_flags & SCTP_SEND_SNDINFO_VALID) {
1064 cmsg->cmsg_level = IPPROTO_SCTP;
1065 cmsg->cmsg_type = SCTP_SNDINFO;
1066 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndinfo));
1067 memcpy(CMSG_DATA(cmsg), &spa_info->sendv_sndinfo, sizeof(struct sctp_sndinfo));
1068 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndinfo));
1069 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_sndinfo)));
1070 assoc_id = &(spa_info->sendv_sndinfo.snd_assoc_id);
1071 }
1072 if (spa_info->sendv_flags & SCTP_SEND_PRINFO_VALID) {
1073 cmsg->cmsg_level = IPPROTO_SCTP;
1074 cmsg->cmsg_type = SCTP_PRINFO;
1075 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_prinfo));
1076 memcpy(CMSG_DATA(cmsg), &spa_info->sendv_prinfo, sizeof(struct sctp_prinfo));
1077 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_prinfo));
1078 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_prinfo)));
1079 }
1080 if (spa_info->sendv_flags & SCTP_SEND_AUTHINFO_VALID) {
1081 cmsg->cmsg_level = IPPROTO_SCTP;
1082 cmsg->cmsg_type = SCTP_AUTHINFO;
1083 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_authinfo));
1084 memcpy(CMSG_DATA(cmsg), &spa_info->sendv_authinfo, sizeof(struct sctp_authinfo));
1085 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_authinfo));
1086 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_authinfo)));
1087 }
1088 break;
1089 default:
1090 free(cmsgbuf);
1091 errno = EINVAL;
1092 return (-1);
1093 }
1094 addr = addrs;
1095 msg.msg_name = NULL;
1096 msg.msg_namelen = 0;
1097
1098 for (i = 0; i < addrcnt; i++) {
1099 switch (addr->sa_family) {
1100 case AF_INET:
1101 addr_len = (socklen_t)sizeof(struct sockaddr_in);
1102 addr_in = (struct sockaddr_in *)addr;
1103 if (addr_in->sin_len != addr_len) {
1104 free(cmsgbuf);
1105 errno = EINVAL;
1106 return (-1);
1107 }
1108 if (i == 0) {
1109 port = addr_in->sin_port;
1110 } else {
1111 if (port == addr_in->sin_port) {
1112 cmsg->cmsg_level = IPPROTO_SCTP;
1113 cmsg->cmsg_type = SCTP_DSTADDRV4;
1114 cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_addr));
1115 memcpy(CMSG_DATA(cmsg), &addr_in->sin_addr, sizeof(struct in_addr));
1116 msg.msg_controllen += CMSG_SPACE(sizeof(struct in_addr));
1117 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct in_addr)));
1118 } else {
1119 free(cmsgbuf);
1120 errno = EINVAL;
1121 return (-1);
1122 }
1123 }
1124 break;
1125 case AF_INET6:
1126 addr_len = (socklen_t)sizeof(struct sockaddr_in6);
1127 addr_in6 = (struct sockaddr_in6 *)addr;
1128 if (addr_in6->sin6_len != addr_len) {
1129 free(cmsgbuf);
1130 errno = EINVAL;
1131 return (-1);
1132 }
1133 if (i == 0) {
1134 port = addr_in6->sin6_port;
1135 } else {
1136 if (port == addr_in6->sin6_port) {
1137 cmsg->cmsg_level = IPPROTO_SCTP;
1138 cmsg->cmsg_type = SCTP_DSTADDRV6;
1139 cmsg->cmsg_len = CMSG_LEN(sizeof(struct in6_addr));
1140 memcpy(CMSG_DATA(cmsg), &addr_in6->sin6_addr, sizeof(struct in6_addr));
1141 msg.msg_controllen += CMSG_SPACE(sizeof(struct in6_addr));
1142 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct in6_addr)));
1143 } else {
1144 free(cmsgbuf);
1145 errno = EINVAL;
1146 return (-1);
1147 }
1148 }
1149 break;
1150 default:
1151 free(cmsgbuf);
1152 errno = EINVAL;
1153 return (-1);
1154 }
1155 if (i == 0) {
1156 msg.msg_name = addr;
1157 msg.msg_namelen = addr_len;
1158 }
1159 addr = (struct sockaddr *)((caddr_t)addr + addr_len);
1160 }
1161 if (msg.msg_controllen == 0) {
1162 msg.msg_control = NULL;
1163 }
1164 msg.msg_iov = (struct iovec *)iov;
1165 msg.msg_iovlen = iovcnt;
1166 msg.msg_flags = 0;
1167 ret = sendmsg(sd, &msg, flags);
1168 free(cmsgbuf);
1169 if ((ret >= 0) && (addrs != NULL) && (assoc_id != NULL)) {
1170 *assoc_id = sctp_getassocid(sd, addrs);
1171 }
1172 return (ret);
1173 }
1174
1175
1176 #if !defined(SYS_sctp_peeloff) && !defined(HAVE_SCTP_PEELOFF_SOCKOPT)
1177
1178 int
sctp_peeloff(int sd,sctp_assoc_t assoc_id)1179 sctp_peeloff(int sd, sctp_assoc_t assoc_id)
1180 {
1181 /* NOT supported, return invalid sd */
1182 errno = ENOTSUP;
1183 return (-1);
1184 }
1185
1186 #endif
1187 #if defined(SYS_sctp_peeloff) && !defined(HAVE_SCTP_PEELOFF_SOCKOPT)
1188 int
sctp_peeloff(int sd,sctp_assoc_t assoc_id)1189 sctp_peeloff(int sd, sctp_assoc_t assoc_id)
1190 {
1191 return (syscall(SYS_sctp_peeloff, sd, assoc_id));
1192 }
1193
1194 #endif
1195
1196 #undef SCTP_CONTROL_VEC_SIZE_RCV
1197