1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
5 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
6 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
10 *
11 * a) Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
13 *
14 * b) Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the distribution.
17 *
18 * c) Neither the name of Cisco Systems, Inc. nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
24 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32 * THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
37
38 #include <stdbool.h>
39 #include <stddef.h>
40 #include <stdio.h>
41 #include <string.h>
42 #include <errno.h>
43 #include <stdlib.h>
44 #include <unistd.h>
45 #include <sys/types.h>
46 #include <sys/socket.h>
47 #include <sys/errno.h>
48 #include <sys/syscall.h>
49 #include <sys/uio.h>
50 #include <netinet/in.h>
51 #include <arpa/inet.h>
52 #include <netinet/sctp_uio.h>
53 #include <netinet/sctp.h>
54
55 #ifndef IN6_IS_ADDR_V4MAPPED
56 #define IN6_IS_ADDR_V4MAPPED(a) \
57 ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
58 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
59 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff)))
60 #endif
61
62 #define SCTP_CONTROL_VEC_SIZE_RCV 16384
63
64
65 static void
in6_sin6_2_sin(struct sockaddr_in * sin,struct sockaddr_in6 * sin6)66 in6_sin6_2_sin(struct sockaddr_in *sin, struct sockaddr_in6 *sin6)
67 {
68 bzero(sin, sizeof(*sin));
69 sin->sin_len = sizeof(struct sockaddr_in);
70 sin->sin_family = AF_INET;
71 sin->sin_port = sin6->sin6_port;
72 sin->sin_addr.s_addr = sin6->sin6_addr.__u6_addr.__u6_addr32[3];
73 }
74
75 int
sctp_getaddrlen(sa_family_t family)76 sctp_getaddrlen(sa_family_t family)
77 {
78 int ret, sd;
79 socklen_t siz;
80 struct sctp_assoc_value av;
81
82 av.assoc_value = family;
83 siz = sizeof(av);
84 #if defined(AF_INET)
85 sd = socket(AF_INET, SOCK_SEQPACKET, IPPROTO_SCTP);
86 #elif defined(AF_INET6)
87 sd = socket(AF_INET6, SOCK_SEQPACKET, IPPROTO_SCTP);
88 #else
89 sd = -1;
90 #endif
91 if (sd == -1) {
92 return (-1);
93 }
94 ret = getsockopt(sd, IPPROTO_SCTP, SCTP_GET_ADDR_LEN, &av, &siz);
95 close(sd);
96 if (ret == 0) {
97 return ((int)av.assoc_value);
98 } else {
99 return (-1);
100 }
101 }
102
103 int
sctp_connectx(int sd,const struct sockaddr * addrs,int addrcnt,sctp_assoc_t * id)104 sctp_connectx(int sd, const struct sockaddr *addrs, int addrcnt,
105 sctp_assoc_t *id)
106 {
107 char *buf;
108 int i, ret, *aa;
109 char *cpto;
110 const struct sockaddr *at;
111 size_t len;
112
113 /* validate the address count and list */
114 if ((addrs == NULL) || (addrcnt <= 0)) {
115 errno = EINVAL;
116 return (-1);
117 }
118 if ((buf = malloc(sizeof(int) + (size_t)addrcnt * sizeof(struct sockaddr_in6))) == NULL) {
119 errno = E2BIG;
120 return (-1);
121 }
122 len = sizeof(int);
123 at = addrs;
124 cpto = buf + sizeof(int);
125 /* validate all the addresses and get the size */
126 for (i = 0; i < addrcnt; i++) {
127 switch (at->sa_family) {
128 case AF_INET:
129 if (at->sa_len != sizeof(struct sockaddr_in)) {
130 free(buf);
131 errno = EINVAL;
132 return (-1);
133 }
134 memcpy(cpto, at, sizeof(struct sockaddr_in));
135 cpto = ((caddr_t)cpto + sizeof(struct sockaddr_in));
136 len += sizeof(struct sockaddr_in);
137 break;
138 case AF_INET6:
139 if (at->sa_len != sizeof(struct sockaddr_in6)) {
140 free(buf);
141 errno = EINVAL;
142 return (-1);
143 }
144 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)at)->sin6_addr)) {
145 in6_sin6_2_sin((struct sockaddr_in *)cpto, (struct sockaddr_in6 *)at);
146 cpto = ((caddr_t)cpto + sizeof(struct sockaddr_in));
147 len += sizeof(struct sockaddr_in);
148 } else {
149 memcpy(cpto, at, sizeof(struct sockaddr_in6));
150 cpto = ((caddr_t)cpto + sizeof(struct sockaddr_in6));
151 len += sizeof(struct sockaddr_in6);
152 }
153 break;
154 default:
155 free(buf);
156 errno = EINVAL;
157 return (-1);
158 }
159 at = (struct sockaddr *)((caddr_t)at + at->sa_len);
160 }
161 aa = (int *)buf;
162 *aa = addrcnt;
163 ret = setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X, (void *)buf,
164 (socklen_t)len);
165 if ((ret == 0) && (id != NULL)) {
166 *id = *(sctp_assoc_t *)buf;
167 }
168 free(buf);
169 return (ret);
170 }
171
172 int
sctp_bindx(int sd,struct sockaddr * addrs,int addrcnt,int flags)173 sctp_bindx(int sd, struct sockaddr *addrs, int addrcnt, int flags)
174 {
175 struct sockaddr *sa;
176 struct sockaddr_in *sin;
177 struct sockaddr_in6 *sin6;
178 int i;
179 uint16_t sport;
180 bool fix_port;
181
182 /* validate the flags */
183 if ((flags != SCTP_BINDX_ADD_ADDR) &&
184 (flags != SCTP_BINDX_REM_ADDR)) {
185 errno = EFAULT;
186 return (-1);
187 }
188 /* validate the address count and list */
189 if ((addrcnt <= 0) || (addrs == NULL)) {
190 errno = EINVAL;
191 return (-1);
192 }
193 sport = 0;
194 fix_port = false;
195 /* First pre-screen the addresses */
196 sa = addrs;
197 for (i = 0; i < addrcnt; i++) {
198 switch (sa->sa_family) {
199 case AF_INET:
200 if (sa->sa_len != sizeof(struct sockaddr_in)) {
201 errno = EINVAL;
202 return (-1);
203 }
204 sin = (struct sockaddr_in *)sa;
205 if (sin->sin_port) {
206 /* non-zero port, check or save */
207 if (sport) {
208 /* Check against our port */
209 if (sport != sin->sin_port) {
210 errno = EINVAL;
211 return (-1);
212 }
213 } else {
214 /* save off the port */
215 sport = sin->sin_port;
216 fix_port = (i > 0);
217 }
218 }
219 break;
220 case AF_INET6:
221 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
222 errno = EINVAL;
223 return (-1);
224 }
225 sin6 = (struct sockaddr_in6 *)sa;
226 if (sin6->sin6_port) {
227 /* non-zero port, check or save */
228 if (sport) {
229 /* Check against our port */
230 if (sport != sin6->sin6_port) {
231 errno = EINVAL;
232 return (-1);
233 }
234 } else {
235 /* save off the port */
236 sport = sin6->sin6_port;
237 fix_port = (i > 0);
238 }
239 }
240 break;
241 default:
242 /* Invalid address family specified. */
243 errno = EAFNOSUPPORT;
244 return (-1);
245 }
246 sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len);
247 }
248 sa = addrs;
249 for (i = 0; i < addrcnt; i++) {
250 /*
251 * Now, if there was a port mentioned, assure that the first
252 * address has that port to make sure it fails or succeeds
253 * correctly.
254 */
255 if (fix_port) {
256 switch (sa->sa_family) {
257 case AF_INET:
258 ((struct sockaddr_in *)sa)->sin_port = sport;
259 break;
260 case AF_INET6:
261 ((struct sockaddr_in6 *)sa)->sin6_port = sport;
262 break;
263 }
264 fix_port = false;
265 }
266 if (setsockopt(sd, IPPROTO_SCTP, flags, sa, sa->sa_len) != 0) {
267 return (-1);
268 }
269 sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len);
270 }
271 return (0);
272 }
273
274 int
sctp_opt_info(int sd,sctp_assoc_t id,int opt,void * arg,socklen_t * size)275 sctp_opt_info(int sd, sctp_assoc_t id, int opt, void *arg, socklen_t *size)
276 {
277 if (arg == NULL) {
278 errno = EINVAL;
279 return (-1);
280 }
281 if ((id == SCTP_CURRENT_ASSOC) ||
282 (id == SCTP_ALL_ASSOC)) {
283 errno = EINVAL;
284 return (-1);
285 }
286 switch (opt) {
287 case SCTP_RTOINFO:
288 ((struct sctp_rtoinfo *)arg)->srto_assoc_id = id;
289 break;
290 case SCTP_ASSOCINFO:
291 ((struct sctp_assocparams *)arg)->sasoc_assoc_id = id;
292 break;
293 case SCTP_DEFAULT_SEND_PARAM:
294 ((struct sctp_assocparams *)arg)->sasoc_assoc_id = id;
295 break;
296 case SCTP_PRIMARY_ADDR:
297 ((struct sctp_setprim *)arg)->ssp_assoc_id = id;
298 break;
299 case SCTP_PEER_ADDR_PARAMS:
300 ((struct sctp_paddrparams *)arg)->spp_assoc_id = id;
301 break;
302 case SCTP_MAXSEG:
303 ((struct sctp_assoc_value *)arg)->assoc_id = id;
304 break;
305 case SCTP_AUTH_KEY:
306 ((struct sctp_authkey *)arg)->sca_assoc_id = id;
307 break;
308 case SCTP_AUTH_ACTIVE_KEY:
309 ((struct sctp_authkeyid *)arg)->scact_assoc_id = id;
310 break;
311 case SCTP_DELAYED_SACK:
312 ((struct sctp_sack_info *)arg)->sack_assoc_id = id;
313 break;
314 case SCTP_CONTEXT:
315 ((struct sctp_assoc_value *)arg)->assoc_id = id;
316 break;
317 case SCTP_STATUS:
318 ((struct sctp_status *)arg)->sstat_assoc_id = id;
319 break;
320 case SCTP_GET_PEER_ADDR_INFO:
321 ((struct sctp_paddrinfo *)arg)->spinfo_assoc_id = id;
322 break;
323 case SCTP_PEER_AUTH_CHUNKS:
324 ((struct sctp_authchunks *)arg)->gauth_assoc_id = id;
325 break;
326 case SCTP_LOCAL_AUTH_CHUNKS:
327 ((struct sctp_authchunks *)arg)->gauth_assoc_id = id;
328 break;
329 case SCTP_TIMEOUTS:
330 ((struct sctp_timeouts *)arg)->stimo_assoc_id = id;
331 break;
332 case SCTP_EVENT:
333 ((struct sctp_event *)arg)->se_assoc_id = id;
334 break;
335 case SCTP_DEFAULT_SNDINFO:
336 ((struct sctp_sndinfo *)arg)->snd_assoc_id = id;
337 break;
338 case SCTP_DEFAULT_PRINFO:
339 ((struct sctp_default_prinfo *)arg)->pr_assoc_id = id;
340 break;
341 case SCTP_PEER_ADDR_THLDS:
342 ((struct sctp_paddrthlds *)arg)->spt_assoc_id = id;
343 break;
344 case SCTP_REMOTE_UDP_ENCAPS_PORT:
345 ((struct sctp_udpencaps *)arg)->sue_assoc_id = id;
346 break;
347 case SCTP_ECN_SUPPORTED:
348 ((struct sctp_assoc_value *)arg)->assoc_id = id;
349 break;
350 case SCTP_PR_SUPPORTED:
351 ((struct sctp_assoc_value *)arg)->assoc_id = id;
352 break;
353 case SCTP_AUTH_SUPPORTED:
354 ((struct sctp_assoc_value *)arg)->assoc_id = id;
355 break;
356 case SCTP_ASCONF_SUPPORTED:
357 ((struct sctp_assoc_value *)arg)->assoc_id = id;
358 break;
359 case SCTP_RECONFIG_SUPPORTED:
360 ((struct sctp_assoc_value *)arg)->assoc_id = id;
361 break;
362 case SCTP_NRSACK_SUPPORTED:
363 ((struct sctp_assoc_value *)arg)->assoc_id = id;
364 break;
365 case SCTP_PKTDROP_SUPPORTED:
366 ((struct sctp_assoc_value *)arg)->assoc_id = id;
367 break;
368 case SCTP_MAX_BURST:
369 ((struct sctp_assoc_value *)arg)->assoc_id = id;
370 break;
371 case SCTP_ENABLE_STREAM_RESET:
372 ((struct sctp_assoc_value *)arg)->assoc_id = id;
373 break;
374 case SCTP_PR_STREAM_STATUS:
375 ((struct sctp_prstatus *)arg)->sprstat_assoc_id = id;
376 break;
377 case SCTP_PR_ASSOC_STATUS:
378 ((struct sctp_prstatus *)arg)->sprstat_assoc_id = id;
379 break;
380 case SCTP_MAX_CWND:
381 ((struct sctp_assoc_value *)arg)->assoc_id = id;
382 break;
383 default:
384 break;
385 }
386 return (getsockopt(sd, IPPROTO_SCTP, opt, arg, size));
387 }
388
389 int
sctp_getpaddrs(int sd,sctp_assoc_t id,struct sockaddr ** raddrs)390 sctp_getpaddrs(int sd, sctp_assoc_t id, struct sockaddr **raddrs)
391 {
392 struct sctp_getaddresses *addrs;
393 struct sockaddr *sa;
394 caddr_t lim;
395 socklen_t opt_len;
396 uint32_t size_of_addresses;
397 int cnt;
398
399 if (raddrs == NULL) {
400 errno = EFAULT;
401 return (-1);
402 }
403 /* When calling getsockopt(), the value contains the assoc_id. */
404 size_of_addresses = (uint32_t)id;
405 opt_len = (socklen_t)sizeof(uint32_t);
406 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_REMOTE_ADDR_SIZE,
407 &size_of_addresses, &opt_len) != 0) {
408 if (errno == ENOENT) {
409 return (0);
410 } else {
411 return (-1);
412 }
413 }
414 opt_len = (socklen_t)((size_t)size_of_addresses + sizeof(struct sctp_getaddresses));
415 addrs = calloc(1, (size_t)opt_len);
416 if (addrs == NULL) {
417 errno = ENOMEM;
418 return (-1);
419 }
420 addrs->sget_assoc_id = id;
421 /* Now lets get the array of addresses */
422 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_PEER_ADDRESSES,
423 addrs, &opt_len) != 0) {
424 free(addrs);
425 return (-1);
426 }
427 *raddrs = &addrs->addr[0].sa;
428 cnt = 0;
429 sa = &addrs->addr[0].sa;
430 lim = (caddr_t)addrs + opt_len;
431 while (((caddr_t)sa < lim) && (sa->sa_len > 0)) {
432 sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len);
433 cnt++;
434 }
435 return (cnt);
436 }
437
438 void
sctp_freepaddrs(struct sockaddr * addrs)439 sctp_freepaddrs(struct sockaddr *addrs)
440 {
441 void *fr_addr;
442
443 /* Take away the hidden association id */
444 fr_addr = (void *)((caddr_t)addrs - offsetof(struct sctp_getaddresses, addr));
445 /* Now free it */
446 free(fr_addr);
447 }
448
449 int
sctp_getladdrs(int sd,sctp_assoc_t id,struct sockaddr ** raddrs)450 sctp_getladdrs(int sd, sctp_assoc_t id, struct sockaddr **raddrs)
451 {
452 struct sctp_getaddresses *addrs;
453 struct sockaddr *sa;
454 caddr_t lim;
455 socklen_t opt_len;
456 uint32_t size_of_addresses;
457 int cnt;
458
459 if (raddrs == NULL) {
460 errno = EFAULT;
461 return (-1);
462 }
463 size_of_addresses = 0;
464 opt_len = (socklen_t)sizeof(uint32_t);
465 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_LOCAL_ADDR_SIZE,
466 &size_of_addresses, &opt_len) != 0) {
467 return (-1);
468 }
469 opt_len = (socklen_t)((size_t)size_of_addresses + sizeof(struct sctp_getaddresses));
470 addrs = calloc(1, (size_t)opt_len);
471 if (addrs == NULL) {
472 errno = ENOMEM;
473 return (-1);
474 }
475 addrs->sget_assoc_id = id;
476 /* Now lets get the array of addresses */
477 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_LOCAL_ADDRESSES, addrs,
478 &opt_len) != 0) {
479 free(addrs);
480 return (-1);
481 }
482 if (size_of_addresses == 0) {
483 free(addrs);
484 return (0);
485 }
486 *raddrs = &addrs->addr[0].sa;
487 cnt = 0;
488 sa = &addrs->addr[0].sa;
489 lim = (caddr_t)addrs + opt_len;
490 while (((caddr_t)sa < lim) && (sa->sa_len > 0)) {
491 sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len);
492 cnt++;
493 }
494 return (cnt);
495 }
496
497 void
sctp_freeladdrs(struct sockaddr * addrs)498 sctp_freeladdrs(struct sockaddr *addrs)
499 {
500 void *fr_addr;
501
502 /* Take away the hidden association id */
503 fr_addr = (void *)((caddr_t)addrs - offsetof(struct sctp_getaddresses, addr));
504 /* Now free it */
505 free(fr_addr);
506 }
507
508 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)509 sctp_sendmsg(int s,
510 const void *data,
511 size_t len,
512 const struct sockaddr *to,
513 socklen_t tolen,
514 uint32_t ppid,
515 uint32_t flags,
516 uint16_t stream_no,
517 uint32_t timetolive,
518 uint32_t context)
519 {
520 #ifdef SYS_sctp_generic_sendmsg
521 struct sctp_sndrcvinfo sinfo;
522
523 memset(&sinfo, 0, sizeof(struct sctp_sndrcvinfo));
524 sinfo.sinfo_ppid = ppid;
525 sinfo.sinfo_flags = flags;
526 sinfo.sinfo_stream = stream_no;
527 sinfo.sinfo_timetolive = timetolive;
528 sinfo.sinfo_context = context;
529 sinfo.sinfo_assoc_id = 0;
530 return (syscall(SYS_sctp_generic_sendmsg, s,
531 data, len, to, tolen, &sinfo, 0));
532 #else
533 struct msghdr msg;
534 struct sctp_sndrcvinfo *sinfo;
535 struct iovec iov;
536 char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))];
537 struct cmsghdr *cmsg;
538 struct sockaddr *who = NULL;
539 union {
540 struct sockaddr_in in;
541 struct sockaddr_in6 in6;
542 } addr;
543
544 if ((tolen > 0) &&
545 ((to == NULL) || (tolen < sizeof(struct sockaddr)))) {
546 errno = EINVAL;
547 return (-1);
548 }
549 if ((to != NULL) && (tolen > 0)) {
550 switch (to->sa_family) {
551 case AF_INET:
552 if (tolen != sizeof(struct sockaddr_in)) {
553 errno = EINVAL;
554 return (-1);
555 }
556 if ((to->sa_len > 0) &&
557 (to->sa_len != sizeof(struct sockaddr_in))) {
558 errno = EINVAL;
559 return (-1);
560 }
561 memcpy(&addr, to, sizeof(struct sockaddr_in));
562 addr.in.sin_len = sizeof(struct sockaddr_in);
563 break;
564 case AF_INET6:
565 if (tolen != sizeof(struct sockaddr_in6)) {
566 errno = EINVAL;
567 return (-1);
568 }
569 if ((to->sa_len > 0) &&
570 (to->sa_len != sizeof(struct sockaddr_in6))) {
571 errno = EINVAL;
572 return (-1);
573 }
574 memcpy(&addr, to, sizeof(struct sockaddr_in6));
575 addr.in6.sin6_len = sizeof(struct sockaddr_in6);
576 break;
577 default:
578 errno = EAFNOSUPPORT;
579 return (-1);
580 }
581 who = (struct sockaddr *)&addr;
582 }
583
584 iov.iov_base = (char *)data;
585 iov.iov_len = len;
586
587 if (who) {
588 msg.msg_name = (caddr_t)who;
589 msg.msg_namelen = who->sa_len;
590 } else {
591 msg.msg_name = (caddr_t)NULL;
592 msg.msg_namelen = 0;
593 }
594 msg.msg_iov = &iov;
595 msg.msg_iovlen = 1;
596 msg.msg_control = cmsgbuf;
597 msg.msg_controllen = CMSG_SPACE(sizeof(struct sctp_sndrcvinfo));
598 msg.msg_flags = 0;
599 cmsg = (struct cmsghdr *)cmsgbuf;
600 cmsg->cmsg_level = IPPROTO_SCTP;
601 cmsg->cmsg_type = SCTP_SNDRCV;
602 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo));
603 sinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg);
604 memset(sinfo, 0, sizeof(struct sctp_sndrcvinfo));
605 sinfo->sinfo_stream = stream_no;
606 sinfo->sinfo_ssn = 0;
607 sinfo->sinfo_flags = flags;
608 sinfo->sinfo_ppid = ppid;
609 sinfo->sinfo_context = context;
610 sinfo->sinfo_assoc_id = 0;
611 sinfo->sinfo_timetolive = timetolive;
612 return (sendmsg(s, &msg, 0));
613 #endif
614 }
615
616
617 sctp_assoc_t
sctp_getassocid(int sd,struct sockaddr * sa)618 sctp_getassocid(int sd, struct sockaddr *sa)
619 {
620 struct sctp_paddrinfo sp;
621 socklen_t siz;
622
623 /* First get the assoc id */
624 siz = sizeof(sp);
625 memset(&sp, 0, sizeof(sp));
626 memcpy((caddr_t)&sp.spinfo_address, sa, sa->sa_len);
627 if (getsockopt(sd, IPPROTO_SCTP,
628 SCTP_GET_PEER_ADDR_INFO, &sp, &siz) != 0) {
629 /* We depend on the fact that 0 can never be returned */
630 return ((sctp_assoc_t)0);
631 }
632 return (sp.spinfo_assoc_id);
633 }
634
635 ssize_t
sctp_send(int sd,const void * data,size_t len,const struct sctp_sndrcvinfo * sinfo,int flags)636 sctp_send(int sd, const void *data, size_t len,
637 const struct sctp_sndrcvinfo *sinfo,
638 int flags)
639 {
640
641 #ifdef SYS_sctp_generic_sendmsg
642 struct sockaddr *to = NULL;
643
644 return (syscall(SYS_sctp_generic_sendmsg, sd,
645 data, len, to, 0, sinfo, flags));
646 #else
647 struct msghdr msg;
648 struct iovec iov;
649 char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))];
650 struct cmsghdr *cmsg;
651
652 if (sinfo == NULL) {
653 errno = EINVAL;
654 return (-1);
655 }
656 iov.iov_base = (char *)data;
657 iov.iov_len = len;
658
659 msg.msg_name = NULL;
660 msg.msg_namelen = 0;
661 msg.msg_iov = &iov;
662 msg.msg_iovlen = 1;
663 msg.msg_control = cmsgbuf;
664 msg.msg_controllen = CMSG_SPACE(sizeof(struct sctp_sndrcvinfo));
665 msg.msg_flags = 0;
666 cmsg = (struct cmsghdr *)cmsgbuf;
667 cmsg->cmsg_level = IPPROTO_SCTP;
668 cmsg->cmsg_type = SCTP_SNDRCV;
669 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo));
670 memcpy(CMSG_DATA(cmsg), sinfo, sizeof(struct sctp_sndrcvinfo));
671 return (sendmsg(sd, &msg, flags));
672 #endif
673 }
674
675
676
677 ssize_t
sctp_sendx(int sd,const void * msg,size_t msg_len,struct sockaddr * addrs,int addrcnt,struct sctp_sndrcvinfo * sinfo,int flags)678 sctp_sendx(int sd, const void *msg, size_t msg_len,
679 struct sockaddr *addrs, int addrcnt,
680 struct sctp_sndrcvinfo *sinfo,
681 int flags)
682 {
683 struct sctp_sndrcvinfo __sinfo;
684 ssize_t ret;
685 int i, cnt, *aa, saved_errno;
686 char *buf;
687 int no_end_cx = 0;
688 size_t len, add_len;
689 struct sockaddr *at;
690
691 if (addrs == NULL) {
692 errno = EINVAL;
693 return (-1);
694 }
695 #ifdef SYS_sctp_generic_sendmsg
696 if (addrcnt == 1) {
697 socklen_t l;
698 ssize_t ret;
699
700 /*
701 * Quick way, we don't need to do a connectx so lets use the
702 * syscall directly.
703 */
704 l = addrs->sa_len;
705 ret = syscall(SYS_sctp_generic_sendmsg, sd,
706 msg, msg_len, addrs, l, sinfo, flags);
707 if ((ret >= 0) && (sinfo != NULL)) {
708 sinfo->sinfo_assoc_id = sctp_getassocid(sd, addrs);
709 }
710 return (ret);
711 }
712 #endif
713
714 len = sizeof(int);
715 at = addrs;
716 cnt = 0;
717 /* validate all the addresses and get the size */
718 for (i = 0; i < addrcnt; i++) {
719 if (at->sa_family == AF_INET) {
720 add_len = sizeof(struct sockaddr_in);
721 } else if (at->sa_family == AF_INET6) {
722 add_len = sizeof(struct sockaddr_in6);
723 } else {
724 errno = EINVAL;
725 return (-1);
726 }
727 len += add_len;
728 at = (struct sockaddr *)((caddr_t)at + add_len);
729 cnt++;
730 }
731 /* do we have any? */
732 if (cnt == 0) {
733 errno = EINVAL;
734 return (-1);
735 }
736 buf = malloc(len);
737 if (buf == NULL) {
738 errno = ENOMEM;
739 return (-1);
740 }
741 aa = (int *)buf;
742 *aa = cnt;
743 aa++;
744 memcpy((caddr_t)aa, addrs, (size_t)(len - sizeof(int)));
745 ret = setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_DELAYED, (void *)buf,
746 (socklen_t)len);
747
748 free(buf);
749 if (ret != 0) {
750 if (errno == EALREADY) {
751 no_end_cx = 1;
752 goto continue_send;
753 }
754 return (ret);
755 }
756 continue_send:
757 if (sinfo == NULL) {
758 sinfo = &__sinfo;
759 memset(&__sinfo, 0, sizeof(__sinfo));
760 }
761 sinfo->sinfo_assoc_id = sctp_getassocid(sd, addrs);
762 if (sinfo->sinfo_assoc_id == 0) {
763 (void)setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_COMPLETE, (void *)addrs,
764 (socklen_t)addrs->sa_len);
765 errno = ENOENT;
766 return (-1);
767 }
768 ret = sctp_send(sd, msg, msg_len, sinfo, flags);
769 saved_errno = errno;
770 if (no_end_cx == 0)
771 (void)setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_COMPLETE, (void *)addrs,
772 (socklen_t)addrs->sa_len);
773
774 errno = saved_errno;
775 return (ret);
776 }
777
778 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)779 sctp_sendmsgx(int sd,
780 const void *msg,
781 size_t len,
782 struct sockaddr *addrs,
783 int addrcnt,
784 uint32_t ppid,
785 uint32_t flags,
786 uint16_t stream_no,
787 uint32_t timetolive,
788 uint32_t context)
789 {
790 struct sctp_sndrcvinfo sinfo;
791
792 memset((void *)&sinfo, 0, sizeof(struct sctp_sndrcvinfo));
793 sinfo.sinfo_ppid = ppid;
794 sinfo.sinfo_flags = flags;
795 sinfo.sinfo_stream = stream_no;
796 sinfo.sinfo_timetolive = timetolive;
797 sinfo.sinfo_context = context;
798 return (sctp_sendx(sd, msg, len, addrs, addrcnt, &sinfo, 0));
799 }
800
801 ssize_t
sctp_recvmsg(int s,void * dbuf,size_t len,struct sockaddr * from,socklen_t * fromlen,struct sctp_sndrcvinfo * sinfo,int * msg_flags)802 sctp_recvmsg(int s,
803 void *dbuf,
804 size_t len,
805 struct sockaddr *from,
806 socklen_t *fromlen,
807 struct sctp_sndrcvinfo *sinfo,
808 int *msg_flags)
809 {
810 #ifdef SYS_sctp_generic_recvmsg
811 struct iovec iov;
812
813 iov.iov_base = dbuf;
814 iov.iov_len = len;
815 return (syscall(SYS_sctp_generic_recvmsg, s,
816 &iov, 1, from, fromlen, sinfo, msg_flags));
817 #else
818 ssize_t sz;
819 struct msghdr msg;
820 struct iovec iov;
821 char cmsgbuf[SCTP_CONTROL_VEC_SIZE_RCV];
822 struct cmsghdr *cmsg;
823
824 if (msg_flags == NULL) {
825 errno = EINVAL;
826 return (-1);
827 }
828 iov.iov_base = dbuf;
829 iov.iov_len = len;
830 msg.msg_name = (caddr_t)from;
831 if (fromlen == NULL)
832 msg.msg_namelen = 0;
833 else
834 msg.msg_namelen = *fromlen;
835 msg.msg_iov = &iov;
836 msg.msg_iovlen = 1;
837 msg.msg_control = cmsgbuf;
838 msg.msg_controllen = sizeof(cmsgbuf);
839 msg.msg_flags = 0;
840 sz = recvmsg(s, &msg, *msg_flags);
841 *msg_flags = msg.msg_flags;
842 if (sz <= 0) {
843 return (sz);
844 }
845 if (sinfo) {
846 sinfo->sinfo_assoc_id = 0;
847 }
848 if ((msg.msg_controllen > 0) && (sinfo != NULL)) {
849 /*
850 * parse through and see if we find the sctp_sndrcvinfo (if
851 * the user wants it).
852 */
853 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) {
854 if (cmsg->cmsg_level != IPPROTO_SCTP) {
855 continue;
856 }
857 if (cmsg->cmsg_type == SCTP_SNDRCV) {
858 memcpy(sinfo, CMSG_DATA(cmsg), sizeof(struct sctp_sndrcvinfo));
859 break;
860 }
861 if (cmsg->cmsg_type == SCTP_EXTRCV) {
862 /*
863 * Let's hope that the user provided enough
864 * enough memory. At least he asked for more
865 * information.
866 */
867 memcpy(sinfo, CMSG_DATA(cmsg), sizeof(struct sctp_extrcvinfo));
868 break;
869 }
870 }
871 }
872 return (sz);
873 #endif
874 }
875
876 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)877 sctp_recvv(int sd,
878 const struct iovec *iov,
879 int iovlen,
880 struct sockaddr *from,
881 socklen_t *fromlen,
882 void *info,
883 socklen_t *infolen,
884 unsigned int *infotype,
885 int *flags)
886 {
887 char cmsgbuf[SCTP_CONTROL_VEC_SIZE_RCV];
888 struct msghdr msg;
889 struct cmsghdr *cmsg;
890 ssize_t ret;
891 struct sctp_rcvinfo *rcvinfo;
892 struct sctp_nxtinfo *nxtinfo;
893
894 if (((info != NULL) && (infolen == NULL)) ||
895 ((info == NULL) && (infolen != NULL) && (*infolen != 0)) ||
896 ((info != NULL) && (infotype == NULL))) {
897 errno = EINVAL;
898 return (-1);
899 }
900 if (infotype) {
901 *infotype = SCTP_RECVV_NOINFO;
902 }
903 msg.msg_name = from;
904 if (fromlen == NULL) {
905 msg.msg_namelen = 0;
906 } else {
907 msg.msg_namelen = *fromlen;
908 }
909 msg.msg_iov = (struct iovec *)iov;
910 msg.msg_iovlen = iovlen;
911 msg.msg_control = cmsgbuf;
912 msg.msg_controllen = sizeof(cmsgbuf);
913 msg.msg_flags = 0;
914 ret = recvmsg(sd, &msg, *flags);
915 *flags = msg.msg_flags;
916 if ((ret > 0) &&
917 (msg.msg_controllen > 0) &&
918 (infotype != NULL) &&
919 (infolen != NULL) &&
920 (*infolen > 0)) {
921 rcvinfo = NULL;
922 nxtinfo = NULL;
923 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) {
924 if (cmsg->cmsg_level != IPPROTO_SCTP) {
925 continue;
926 }
927 if (cmsg->cmsg_type == SCTP_RCVINFO) {
928 rcvinfo = (struct sctp_rcvinfo *)CMSG_DATA(cmsg);
929 if (nxtinfo != NULL) {
930 break;
931 } else {
932 continue;
933 }
934 }
935 if (cmsg->cmsg_type == SCTP_NXTINFO) {
936 nxtinfo = (struct sctp_nxtinfo *)CMSG_DATA(cmsg);
937 if (rcvinfo != NULL) {
938 break;
939 } else {
940 continue;
941 }
942 }
943 }
944 if (rcvinfo != NULL) {
945 if ((nxtinfo != NULL) && (*infolen >= sizeof(struct sctp_recvv_rn))) {
946 struct sctp_recvv_rn *rn_info;
947
948 rn_info = (struct sctp_recvv_rn *)info;
949 rn_info->recvv_rcvinfo = *rcvinfo;
950 rn_info->recvv_nxtinfo = *nxtinfo;
951 *infolen = (socklen_t)sizeof(struct sctp_recvv_rn);
952 *infotype = SCTP_RECVV_RN;
953 } else if (*infolen >= sizeof(struct sctp_rcvinfo)) {
954 memcpy(info, rcvinfo, sizeof(struct sctp_rcvinfo));
955 *infolen = (socklen_t)sizeof(struct sctp_rcvinfo);
956 *infotype = SCTP_RECVV_RCVINFO;
957 }
958 } else if (nxtinfo != NULL) {
959 if (*infolen >= sizeof(struct sctp_nxtinfo)) {
960 memcpy(info, nxtinfo, sizeof(struct sctp_nxtinfo));
961 *infolen = (socklen_t)sizeof(struct sctp_nxtinfo);
962 *infotype = SCTP_RECVV_NXTINFO;
963 }
964 }
965 }
966 return (ret);
967 }
968
969 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)970 sctp_sendv(int sd,
971 const struct iovec *iov, int iovcnt,
972 struct sockaddr *addrs, int addrcnt,
973 void *info, socklen_t infolen, unsigned int infotype,
974 int flags)
975 {
976 ssize_t ret;
977 int i;
978 socklen_t addr_len;
979 struct msghdr msg;
980 in_port_t port;
981 struct sctp_sendv_spa *spa_info;
982 struct cmsghdr *cmsg;
983 char *cmsgbuf;
984 struct sockaddr *addr;
985 struct sockaddr_in *addr_in;
986 struct sockaddr_in6 *addr_in6;
987 sctp_assoc_t *assoc_id;
988
989 if ((addrcnt < 0) ||
990 (iovcnt < 0) ||
991 ((addrs == NULL) && (addrcnt > 0)) ||
992 ((addrs != NULL) && (addrcnt == 0)) ||
993 ((iov == NULL) && (iovcnt > 0)) ||
994 ((iov != NULL) && (iovcnt == 0))) {
995 errno = EINVAL;
996 return (-1);
997 }
998 cmsgbuf = malloc(CMSG_SPACE(sizeof(struct sctp_sndinfo)) +
999 CMSG_SPACE(sizeof(struct sctp_prinfo)) +
1000 CMSG_SPACE(sizeof(struct sctp_authinfo)) +
1001 (size_t)addrcnt * CMSG_SPACE(sizeof(struct in6_addr)));
1002 if (cmsgbuf == NULL) {
1003 errno = ENOMEM;
1004 return (-1);
1005 }
1006 assoc_id = NULL;
1007 msg.msg_control = cmsgbuf;
1008 msg.msg_controllen = 0;
1009 cmsg = (struct cmsghdr *)cmsgbuf;
1010 switch (infotype) {
1011 case SCTP_SENDV_NOINFO:
1012 if ((infolen != 0) || (info != NULL)) {
1013 free(cmsgbuf);
1014 errno = EINVAL;
1015 return (-1);
1016 }
1017 break;
1018 case SCTP_SENDV_SNDINFO:
1019 if ((info == NULL) || (infolen < sizeof(struct sctp_sndinfo))) {
1020 free(cmsgbuf);
1021 errno = EINVAL;
1022 return (-1);
1023 }
1024 cmsg->cmsg_level = IPPROTO_SCTP;
1025 cmsg->cmsg_type = SCTP_SNDINFO;
1026 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndinfo));
1027 memcpy(CMSG_DATA(cmsg), info, sizeof(struct sctp_sndinfo));
1028 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndinfo));
1029 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_sndinfo)));
1030 assoc_id = &(((struct sctp_sndinfo *)info)->snd_assoc_id);
1031 break;
1032 case SCTP_SENDV_PRINFO:
1033 if ((info == NULL) || (infolen < sizeof(struct sctp_prinfo))) {
1034 free(cmsgbuf);
1035 errno = EINVAL;
1036 return (-1);
1037 }
1038 cmsg->cmsg_level = IPPROTO_SCTP;
1039 cmsg->cmsg_type = SCTP_PRINFO;
1040 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_prinfo));
1041 memcpy(CMSG_DATA(cmsg), info, sizeof(struct sctp_prinfo));
1042 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_prinfo));
1043 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_prinfo)));
1044 break;
1045 case SCTP_SENDV_AUTHINFO:
1046 if ((info == NULL) || (infolen < sizeof(struct sctp_authinfo))) {
1047 free(cmsgbuf);
1048 errno = EINVAL;
1049 return (-1);
1050 }
1051 cmsg->cmsg_level = IPPROTO_SCTP;
1052 cmsg->cmsg_type = SCTP_AUTHINFO;
1053 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_authinfo));
1054 memcpy(CMSG_DATA(cmsg), info, sizeof(struct sctp_authinfo));
1055 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_authinfo));
1056 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_authinfo)));
1057 break;
1058 case SCTP_SENDV_SPA:
1059 if ((info == NULL) || (infolen < sizeof(struct sctp_sendv_spa))) {
1060 free(cmsgbuf);
1061 errno = EINVAL;
1062 return (-1);
1063 }
1064 spa_info = (struct sctp_sendv_spa *)info;
1065 if (spa_info->sendv_flags & SCTP_SEND_SNDINFO_VALID) {
1066 cmsg->cmsg_level = IPPROTO_SCTP;
1067 cmsg->cmsg_type = SCTP_SNDINFO;
1068 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndinfo));
1069 memcpy(CMSG_DATA(cmsg), &spa_info->sendv_sndinfo, sizeof(struct sctp_sndinfo));
1070 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndinfo));
1071 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_sndinfo)));
1072 assoc_id = &(spa_info->sendv_sndinfo.snd_assoc_id);
1073 }
1074 if (spa_info->sendv_flags & SCTP_SEND_PRINFO_VALID) {
1075 cmsg->cmsg_level = IPPROTO_SCTP;
1076 cmsg->cmsg_type = SCTP_PRINFO;
1077 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_prinfo));
1078 memcpy(CMSG_DATA(cmsg), &spa_info->sendv_prinfo, sizeof(struct sctp_prinfo));
1079 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_prinfo));
1080 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_prinfo)));
1081 }
1082 if (spa_info->sendv_flags & SCTP_SEND_AUTHINFO_VALID) {
1083 cmsg->cmsg_level = IPPROTO_SCTP;
1084 cmsg->cmsg_type = SCTP_AUTHINFO;
1085 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_authinfo));
1086 memcpy(CMSG_DATA(cmsg), &spa_info->sendv_authinfo, sizeof(struct sctp_authinfo));
1087 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_authinfo));
1088 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_authinfo)));
1089 }
1090 break;
1091 default:
1092 free(cmsgbuf);
1093 errno = EINVAL;
1094 return (-1);
1095 }
1096 addr = addrs;
1097 msg.msg_name = NULL;
1098 msg.msg_namelen = 0;
1099
1100 for (i = 0; i < addrcnt; i++) {
1101 switch (addr->sa_family) {
1102 case AF_INET:
1103 addr_len = (socklen_t)sizeof(struct sockaddr_in);
1104 addr_in = (struct sockaddr_in *)addr;
1105 if (addr_in->sin_len != addr_len) {
1106 free(cmsgbuf);
1107 errno = EINVAL;
1108 return (-1);
1109 }
1110 if (i == 0) {
1111 port = addr_in->sin_port;
1112 } else {
1113 if (port == addr_in->sin_port) {
1114 cmsg->cmsg_level = IPPROTO_SCTP;
1115 cmsg->cmsg_type = SCTP_DSTADDRV4;
1116 cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_addr));
1117 memcpy(CMSG_DATA(cmsg), &addr_in->sin_addr, sizeof(struct in_addr));
1118 msg.msg_controllen += CMSG_SPACE(sizeof(struct in_addr));
1119 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct in_addr)));
1120 } else {
1121 free(cmsgbuf);
1122 errno = EINVAL;
1123 return (-1);
1124 }
1125 }
1126 break;
1127 case AF_INET6:
1128 addr_len = (socklen_t)sizeof(struct sockaddr_in6);
1129 addr_in6 = (struct sockaddr_in6 *)addr;
1130 if (addr_in6->sin6_len != addr_len) {
1131 free(cmsgbuf);
1132 errno = EINVAL;
1133 return (-1);
1134 }
1135 if (i == 0) {
1136 port = addr_in6->sin6_port;
1137 } else {
1138 if (port == addr_in6->sin6_port) {
1139 cmsg->cmsg_level = IPPROTO_SCTP;
1140 cmsg->cmsg_type = SCTP_DSTADDRV6;
1141 cmsg->cmsg_len = CMSG_LEN(sizeof(struct in6_addr));
1142 memcpy(CMSG_DATA(cmsg), &addr_in6->sin6_addr, sizeof(struct in6_addr));
1143 msg.msg_controllen += CMSG_SPACE(sizeof(struct in6_addr));
1144 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct in6_addr)));
1145 } else {
1146 free(cmsgbuf);
1147 errno = EINVAL;
1148 return (-1);
1149 }
1150 }
1151 break;
1152 default:
1153 free(cmsgbuf);
1154 errno = EINVAL;
1155 return (-1);
1156 }
1157 if (i == 0) {
1158 msg.msg_name = addr;
1159 msg.msg_namelen = addr_len;
1160 }
1161 addr = (struct sockaddr *)((caddr_t)addr + addr_len);
1162 }
1163 if (msg.msg_controllen == 0) {
1164 msg.msg_control = NULL;
1165 }
1166 msg.msg_iov = (struct iovec *)iov;
1167 msg.msg_iovlen = iovcnt;
1168 msg.msg_flags = 0;
1169 ret = sendmsg(sd, &msg, flags);
1170 free(cmsgbuf);
1171 if ((ret >= 0) && (addrs != NULL) && (assoc_id != NULL)) {
1172 *assoc_id = sctp_getassocid(sd, addrs);
1173 }
1174 return (ret);
1175 }
1176
1177
1178 #if !defined(SYS_sctp_peeloff) && !defined(HAVE_SCTP_PEELOFF_SOCKOPT)
1179
1180 int
sctp_peeloff(int sd,sctp_assoc_t assoc_id)1181 sctp_peeloff(int sd, sctp_assoc_t assoc_id)
1182 {
1183 /* NOT supported, return invalid sd */
1184 errno = ENOTSUP;
1185 return (-1);
1186 }
1187
1188 #endif
1189 #if defined(SYS_sctp_peeloff) && !defined(HAVE_SCTP_PEELOFF_SOCKOPT)
1190 int
sctp_peeloff(int sd,sctp_assoc_t assoc_id)1191 sctp_peeloff(int sd, sctp_assoc_t assoc_id)
1192 {
1193 return (syscall(SYS_sctp_peeloff, sd, assoc_id));
1194 }
1195
1196 #endif
1197
1198 #undef SCTP_CONTROL_VEC_SIZE_RCV
1199