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("$FreeBSD$");
35
36 #include <stdio.h>
37 #include <string.h>
38 #include <errno.h>
39 #include <stdlib.h>
40 #include <unistd.h>
41 #include <sys/types.h>
42 #include <sys/socket.h>
43 #include <sys/errno.h>
44 #include <sys/syscall.h>
45 #include <sys/uio.h>
46 #include <netinet/in.h>
47 #include <arpa/inet.h>
48 #include <netinet/sctp_uio.h>
49 #include <netinet/sctp.h>
50
51 #ifndef IN6_IS_ADDR_V4MAPPED
52 #define IN6_IS_ADDR_V4MAPPED(a) \
53 ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
54 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
55 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff)))
56 #endif
57
58 #define SCTP_CONTROL_VEC_SIZE_RCV 16384
59
60
61 static void
in6_sin6_2_sin(struct sockaddr_in * sin,struct sockaddr_in6 * sin6)62 in6_sin6_2_sin(struct sockaddr_in *sin, struct sockaddr_in6 *sin6)
63 {
64 bzero(sin, sizeof(*sin));
65 sin->sin_len = sizeof(struct sockaddr_in);
66 sin->sin_family = AF_INET;
67 sin->sin_port = sin6->sin6_port;
68 sin->sin_addr.s_addr = sin6->sin6_addr.__u6_addr.__u6_addr32[3];
69 }
70
71 int
sctp_getaddrlen(sa_family_t family)72 sctp_getaddrlen(sa_family_t family)
73 {
74 int ret, sd;
75 socklen_t siz;
76 struct sctp_assoc_value av;
77
78 av.assoc_value = family;
79 siz = sizeof(av);
80 #if defined(AF_INET)
81 sd = socket(AF_INET, SOCK_SEQPACKET, IPPROTO_SCTP);
82 #elif defined(AF_INET6)
83 sd = socket(AF_INET6, SOCK_SEQPACKET, IPPROTO_SCTP);
84 #else
85 sd = -1;
86 #endif
87 if (sd == -1) {
88 return (-1);
89 }
90 ret = getsockopt(sd, IPPROTO_SCTP, SCTP_GET_ADDR_LEN, &av, &siz);
91 close(sd);
92 if (ret == 0) {
93 return ((int)av.assoc_value);
94 } else {
95 return (-1);
96 }
97 }
98
99 int
sctp_connectx(int sd,const struct sockaddr * addrs,int addrcnt,sctp_assoc_t * id)100 sctp_connectx(int sd, const struct sockaddr *addrs, int addrcnt,
101 sctp_assoc_t * id)
102 {
103 char *buf;
104 int i, ret, *aa;
105 char *cpto;
106 const struct sockaddr *at;
107 size_t len;
108
109 /* validate the address count and list */
110 if ((addrs == NULL) || (addrcnt <= 0)) {
111 errno = EINVAL;
112 return (-1);
113 }
114 if ((buf = malloc(sizeof(int) + (size_t)addrcnt * sizeof(struct sockaddr_in6))) == NULL) {
115 errno = E2BIG;
116 return (-1);
117 }
118 len = sizeof(int);
119 at = addrs;
120 cpto = buf + sizeof(int);
121 /* validate all the addresses and get the size */
122 for (i = 0; i < addrcnt; i++) {
123 switch (at->sa_family) {
124 case AF_INET:
125 if (at->sa_len != sizeof(struct sockaddr_in)) {
126 free(buf);
127 errno = EINVAL;
128 return (-1);
129 }
130 memcpy(cpto, at, sizeof(struct sockaddr_in));
131 cpto = ((caddr_t)cpto + sizeof(struct sockaddr_in));
132 len += sizeof(struct sockaddr_in);
133 break;
134 case AF_INET6:
135 if (at->sa_len != sizeof(struct sockaddr_in6)) {
136 free(buf);
137 errno = EINVAL;
138 return (-1);
139 }
140 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)at)->sin6_addr)) {
141 in6_sin6_2_sin((struct sockaddr_in *)cpto, (struct sockaddr_in6 *)at);
142 cpto = ((caddr_t)cpto + sizeof(struct sockaddr_in));
143 len += sizeof(struct sockaddr_in);
144 } else {
145 memcpy(cpto, at, sizeof(struct sockaddr_in6));
146 cpto = ((caddr_t)cpto + sizeof(struct sockaddr_in6));
147 len += sizeof(struct sockaddr_in6);
148 }
149 break;
150 default:
151 free(buf);
152 errno = EINVAL;
153 return (-1);
154 }
155 at = (struct sockaddr *)((caddr_t)at + at->sa_len);
156 }
157 aa = (int *)buf;
158 *aa = addrcnt;
159 ret = setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X, (void *)buf,
160 (socklen_t) len);
161 if ((ret == 0) && (id != NULL)) {
162 *id = *(sctp_assoc_t *) buf;
163 }
164 free(buf);
165 return (ret);
166 }
167
168 int
sctp_bindx(int sd,struct sockaddr * addrs,int addrcnt,int flags)169 sctp_bindx(int sd, struct sockaddr *addrs, int addrcnt, int flags)
170 {
171 struct sctp_getaddresses *gaddrs;
172 struct sockaddr *sa;
173 struct sockaddr_in *sin;
174 struct sockaddr_in6 *sin6;
175 int i;
176 size_t argsz;
177 uint16_t sport = 0;
178
179 /* validate the flags */
180 if ((flags != SCTP_BINDX_ADD_ADDR) &&
181 (flags != SCTP_BINDX_REM_ADDR)) {
182 errno = EFAULT;
183 return (-1);
184 }
185 /* validate the address count and list */
186 if ((addrcnt <= 0) || (addrs == NULL)) {
187 errno = EINVAL;
188 return (-1);
189 }
190 /* First pre-screen the addresses */
191 sa = addrs;
192 for (i = 0; i < addrcnt; i++) {
193 switch (sa->sa_family) {
194 case AF_INET:
195 if (sa->sa_len != sizeof(struct sockaddr_in)) {
196 errno = EINVAL;
197 return (-1);
198 }
199 sin = (struct sockaddr_in *)sa;
200 if (sin->sin_port) {
201 /* non-zero port, check or save */
202 if (sport) {
203 /* Check against our port */
204 if (sport != sin->sin_port) {
205 errno = EINVAL;
206 return (-1);
207 }
208 } else {
209 /* save off the port */
210 sport = sin->sin_port;
211 }
212 }
213 break;
214 case AF_INET6:
215 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
216 errno = EINVAL;
217 return (-1);
218 }
219 sin6 = (struct sockaddr_in6 *)sa;
220 if (sin6->sin6_port) {
221 /* non-zero port, check or save */
222 if (sport) {
223 /* Check against our port */
224 if (sport != sin6->sin6_port) {
225 errno = EINVAL;
226 return (-1);
227 }
228 } else {
229 /* save off the port */
230 sport = sin6->sin6_port;
231 }
232 }
233 break;
234 default:
235 /* Invalid address family specified. */
236 errno = EAFNOSUPPORT;
237 return (-1);
238 }
239 sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len);
240 }
241 argsz = sizeof(struct sctp_getaddresses) +
242 sizeof(struct sockaddr_storage);
243 if ((gaddrs = (struct sctp_getaddresses *)malloc(argsz)) == NULL) {
244 errno = ENOMEM;
245 return (-1);
246 }
247 sa = addrs;
248 for (i = 0; i < addrcnt; i++) {
249 memset(gaddrs, 0, argsz);
250 gaddrs->sget_assoc_id = 0;
251 memcpy(gaddrs->addr, sa, sa->sa_len);
252 /*
253 * Now, if there was a port mentioned, assure that the first
254 * address has that port to make sure it fails or succeeds
255 * correctly.
256 */
257 if ((i == 0) && (sport != 0)) {
258 switch (gaddrs->addr->sa_family) {
259 case AF_INET:
260 sin = (struct sockaddr_in *)gaddrs->addr;
261 sin->sin_port = sport;
262 break;
263 case AF_INET6:
264 sin6 = (struct sockaddr_in6 *)gaddrs->addr;
265 sin6->sin6_port = sport;
266 break;
267 }
268 }
269 if (setsockopt(sd, IPPROTO_SCTP, flags, gaddrs,
270 (socklen_t) argsz) != 0) {
271 free(gaddrs);
272 return (-1);
273 }
274 sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len);
275 }
276 free(gaddrs);
277 return (0);
278 }
279
280 int
sctp_opt_info(int sd,sctp_assoc_t id,int opt,void * arg,socklen_t * size)281 sctp_opt_info(int sd, sctp_assoc_t id, int opt, void *arg, socklen_t * size)
282 {
283 if (arg == NULL) {
284 errno = EINVAL;
285 return (-1);
286 }
287 if ((id == SCTP_CURRENT_ASSOC) ||
288 (id == SCTP_ALL_ASSOC)) {
289 errno = EINVAL;
290 return (-1);
291 }
292 switch (opt) {
293 case SCTP_RTOINFO:
294 ((struct sctp_rtoinfo *)arg)->srto_assoc_id = id;
295 break;
296 case SCTP_ASSOCINFO:
297 ((struct sctp_assocparams *)arg)->sasoc_assoc_id = id;
298 break;
299 case SCTP_DEFAULT_SEND_PARAM:
300 ((struct sctp_assocparams *)arg)->sasoc_assoc_id = id;
301 break;
302 case SCTP_PRIMARY_ADDR:
303 ((struct sctp_setprim *)arg)->ssp_assoc_id = id;
304 break;
305 case SCTP_PEER_ADDR_PARAMS:
306 ((struct sctp_paddrparams *)arg)->spp_assoc_id = id;
307 break;
308 case SCTP_MAXSEG:
309 ((struct sctp_assoc_value *)arg)->assoc_id = id;
310 break;
311 case SCTP_AUTH_KEY:
312 ((struct sctp_authkey *)arg)->sca_assoc_id = id;
313 break;
314 case SCTP_AUTH_ACTIVE_KEY:
315 ((struct sctp_authkeyid *)arg)->scact_assoc_id = id;
316 break;
317 case SCTP_DELAYED_SACK:
318 ((struct sctp_sack_info *)arg)->sack_assoc_id = id;
319 break;
320 case SCTP_CONTEXT:
321 ((struct sctp_assoc_value *)arg)->assoc_id = id;
322 break;
323 case SCTP_STATUS:
324 ((struct sctp_status *)arg)->sstat_assoc_id = id;
325 break;
326 case SCTP_GET_PEER_ADDR_INFO:
327 ((struct sctp_paddrinfo *)arg)->spinfo_assoc_id = id;
328 break;
329 case SCTP_PEER_AUTH_CHUNKS:
330 ((struct sctp_authchunks *)arg)->gauth_assoc_id = id;
331 break;
332 case SCTP_LOCAL_AUTH_CHUNKS:
333 ((struct sctp_authchunks *)arg)->gauth_assoc_id = id;
334 break;
335 case SCTP_TIMEOUTS:
336 ((struct sctp_timeouts *)arg)->stimo_assoc_id = id;
337 break;
338 case SCTP_EVENT:
339 ((struct sctp_event *)arg)->se_assoc_id = id;
340 break;
341 case SCTP_DEFAULT_SNDINFO:
342 ((struct sctp_sndinfo *)arg)->snd_assoc_id = id;
343 break;
344 case SCTP_DEFAULT_PRINFO:
345 ((struct sctp_default_prinfo *)arg)->pr_assoc_id = id;
346 break;
347 case SCTP_PEER_ADDR_THLDS:
348 ((struct sctp_paddrthlds *)arg)->spt_assoc_id = id;
349 break;
350 case SCTP_REMOTE_UDP_ENCAPS_PORT:
351 ((struct sctp_udpencaps *)arg)->sue_assoc_id = id;
352 break;
353 case SCTP_ECN_SUPPORTED:
354 ((struct sctp_assoc_value *)arg)->assoc_id = id;
355 break;
356 case SCTP_PR_SUPPORTED:
357 ((struct sctp_assoc_value *)arg)->assoc_id = id;
358 break;
359 case SCTP_AUTH_SUPPORTED:
360 ((struct sctp_assoc_value *)arg)->assoc_id = id;
361 break;
362 case SCTP_ASCONF_SUPPORTED:
363 ((struct sctp_assoc_value *)arg)->assoc_id = id;
364 break;
365 case SCTP_RECONFIG_SUPPORTED:
366 ((struct sctp_assoc_value *)arg)->assoc_id = id;
367 break;
368 case SCTP_NRSACK_SUPPORTED:
369 ((struct sctp_assoc_value *)arg)->assoc_id = id;
370 break;
371 case SCTP_PKTDROP_SUPPORTED:
372 ((struct sctp_assoc_value *)arg)->assoc_id = id;
373 break;
374 case SCTP_MAX_BURST:
375 ((struct sctp_assoc_value *)arg)->assoc_id = id;
376 break;
377 case SCTP_ENABLE_STREAM_RESET:
378 ((struct sctp_assoc_value *)arg)->assoc_id = id;
379 break;
380 case SCTP_PR_STREAM_STATUS:
381 ((struct sctp_prstatus *)arg)->sprstat_assoc_id = id;
382 break;
383 case SCTP_PR_ASSOC_STATUS:
384 ((struct sctp_prstatus *)arg)->sprstat_assoc_id = id;
385 break;
386 case SCTP_MAX_CWND:
387 ((struct sctp_assoc_value *)arg)->assoc_id = id;
388 break;
389 default:
390 break;
391 }
392 return (getsockopt(sd, IPPROTO_SCTP, opt, arg, size));
393 }
394
395 int
sctp_getpaddrs(int sd,sctp_assoc_t id,struct sockaddr ** raddrs)396 sctp_getpaddrs(int sd, sctp_assoc_t id, struct sockaddr **raddrs)
397 {
398 struct sctp_getaddresses *addrs;
399 struct sockaddr *sa;
400 sctp_assoc_t asoc;
401 caddr_t lim;
402 socklen_t opt_len;
403 int cnt;
404
405 if (raddrs == NULL) {
406 errno = EFAULT;
407 return (-1);
408 }
409 asoc = id;
410 opt_len = (socklen_t) sizeof(sctp_assoc_t);
411 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_REMOTE_ADDR_SIZE,
412 &asoc, &opt_len) != 0) {
413 return (-1);
414 }
415 /* size required is returned in 'asoc' */
416 opt_len = (socklen_t) ((size_t)asoc + sizeof(struct sctp_getaddresses));
417 addrs = calloc(1, (size_t)opt_len);
418 if (addrs == NULL) {
419 errno = ENOMEM;
420 return (-1);
421 }
422 addrs->sget_assoc_id = id;
423 /* Now lets get the array of addresses */
424 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_PEER_ADDRESSES,
425 addrs, &opt_len) != 0) {
426 free(addrs);
427 return (-1);
428 }
429 *raddrs = (struct sockaddr *)&addrs->addr[0];
430 cnt = 0;
431 sa = (struct sockaddr *)&addrs->addr[0];
432 lim = (caddr_t)addrs + opt_len;
433 while (((caddr_t)sa < lim) && (sa->sa_len > 0)) {
434 sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len);
435 cnt++;
436 }
437 return (cnt);
438 }
439
440 void
sctp_freepaddrs(struct sockaddr * addrs)441 sctp_freepaddrs(struct sockaddr *addrs)
442 {
443 void *fr_addr;
444
445 /* Take away the hidden association id */
446 fr_addr = (void *)((caddr_t)addrs - sizeof(sctp_assoc_t));
447 /* Now free it */
448 free(fr_addr);
449 }
450
451 int
sctp_getladdrs(int sd,sctp_assoc_t id,struct sockaddr ** raddrs)452 sctp_getladdrs(int sd, sctp_assoc_t id, struct sockaddr **raddrs)
453 {
454 struct sctp_getaddresses *addrs;
455 caddr_t lim;
456 struct sockaddr *sa;
457 size_t size_of_addresses;
458 socklen_t opt_len;
459 int cnt;
460
461 if (raddrs == NULL) {
462 errno = EFAULT;
463 return (-1);
464 }
465 size_of_addresses = 0;
466 opt_len = (socklen_t) sizeof(int);
467 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_LOCAL_ADDR_SIZE,
468 &size_of_addresses, &opt_len) != 0) {
469 errno = ENOMEM;
470 return (-1);
471 }
472 if (size_of_addresses == 0) {
473 errno = ENOTCONN;
474 return (-1);
475 }
476 opt_len = (socklen_t) (size_of_addresses +
477 sizeof(struct sockaddr_storage) +
478 sizeof(struct sctp_getaddresses));
479 addrs = calloc(1, (size_t)opt_len);
480 if (addrs == NULL) {
481 errno = ENOMEM;
482 return (-1);
483 }
484 addrs->sget_assoc_id = id;
485 /* Now lets get the array of addresses */
486 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_LOCAL_ADDRESSES, addrs,
487 &opt_len) != 0) {
488 free(addrs);
489 errno = ENOMEM;
490 return (-1);
491 }
492 *raddrs = (struct sockaddr *)&addrs->addr[0];
493 cnt = 0;
494 sa = (struct sockaddr *)&addrs->addr[0];
495 lim = (caddr_t)addrs + opt_len;
496 while (((caddr_t)sa < lim) && (sa->sa_len > 0)) {
497 sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len);
498 cnt++;
499 }
500 return (cnt);
501 }
502
503 void
sctp_freeladdrs(struct sockaddr * addrs)504 sctp_freeladdrs(struct sockaddr *addrs)
505 {
506 void *fr_addr;
507
508 /* Take away the hidden association id */
509 fr_addr = (void *)((caddr_t)addrs - sizeof(sctp_assoc_t));
510 /* Now free it */
511 free(fr_addr);
512 }
513
514 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)515 sctp_sendmsg(int s,
516 const void *data,
517 size_t len,
518 const struct sockaddr *to,
519 socklen_t tolen,
520 uint32_t ppid,
521 uint32_t flags,
522 uint16_t stream_no,
523 uint32_t timetolive,
524 uint32_t context)
525 {
526 #ifdef SYS_sctp_generic_sendmsg
527 struct sctp_sndrcvinfo sinfo;
528
529 memset(&sinfo, 0, sizeof(struct sctp_sndrcvinfo));
530 sinfo.sinfo_ppid = ppid;
531 sinfo.sinfo_flags = flags;
532 sinfo.sinfo_stream = stream_no;
533 sinfo.sinfo_timetolive = timetolive;
534 sinfo.sinfo_context = context;
535 sinfo.sinfo_assoc_id = 0;
536 return (syscall(SYS_sctp_generic_sendmsg, s,
537 data, len, to, tolen, &sinfo, 0));
538 #else
539 struct msghdr msg;
540 struct sctp_sndrcvinfo *sinfo;
541 struct iovec iov;
542 char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))];
543 struct cmsghdr *cmsg;
544 struct sockaddr *who = NULL;
545 union {
546 struct sockaddr_in in;
547 struct sockaddr_in6 in6;
548 } addr;
549
550 if ((tolen > 0) &&
551 ((to == NULL) || (tolen < sizeof(struct sockaddr)))) {
552 errno = EINVAL;
553 return (-1);
554 }
555 if ((to != NULL) && (tolen > 0)) {
556 switch (to->sa_family) {
557 case AF_INET:
558 if (tolen != sizeof(struct sockaddr_in)) {
559 errno = EINVAL;
560 return (-1);
561 }
562 if ((to->sa_len > 0) &&
563 (to->sa_len != sizeof(struct sockaddr_in))) {
564 errno = EINVAL;
565 return (-1);
566 }
567 memcpy(&addr, to, sizeof(struct sockaddr_in));
568 addr.in.sin_len = sizeof(struct sockaddr_in);
569 break;
570 case AF_INET6:
571 if (tolen != sizeof(struct sockaddr_in6)) {
572 errno = EINVAL;
573 return (-1);
574 }
575 if ((to->sa_len > 0) &&
576 (to->sa_len != sizeof(struct sockaddr_in6))) {
577 errno = EINVAL;
578 return (-1);
579 }
580 memcpy(&addr, to, sizeof(struct sockaddr_in6));
581 addr.in6.sin6_len = sizeof(struct sockaddr_in6);
582 break;
583 default:
584 errno = EAFNOSUPPORT;
585 return (-1);
586 }
587 who = (struct sockaddr *)&addr;
588 }
589 iov.iov_base = (char *)data;
590 iov.iov_len = len;
591
592 if (who) {
593 msg.msg_name = (caddr_t)who;
594 msg.msg_namelen = who->sa_len;
595 } else {
596 msg.msg_name = (caddr_t)NULL;
597 msg.msg_namelen = 0;
598 }
599 msg.msg_iov = &iov;
600 msg.msg_iovlen = 1;
601 msg.msg_control = cmsgbuf;
602 msg.msg_controllen = CMSG_SPACE(sizeof(struct sctp_sndrcvinfo));
603 msg.msg_flags = 0;
604 cmsg = (struct cmsghdr *)cmsgbuf;
605 cmsg->cmsg_level = IPPROTO_SCTP;
606 cmsg->cmsg_type = SCTP_SNDRCV;
607 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo));
608 sinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg);
609 memset(sinfo, 0, sizeof(struct sctp_sndrcvinfo));
610 sinfo->sinfo_stream = stream_no;
611 sinfo->sinfo_ssn = 0;
612 sinfo->sinfo_flags = flags;
613 sinfo->sinfo_ppid = ppid;
614 sinfo->sinfo_context = context;
615 sinfo->sinfo_assoc_id = 0;
616 sinfo->sinfo_timetolive = timetolive;
617 return (sendmsg(s, &msg, 0));
618 #endif
619 }
620
621
622 sctp_assoc_t
sctp_getassocid(int sd,struct sockaddr * sa)623 sctp_getassocid(int sd, struct sockaddr *sa)
624 {
625 struct sctp_paddrinfo sp;
626 socklen_t siz;
627
628 /* First get the assoc id */
629 siz = sizeof(sp);
630 memset(&sp, 0, sizeof(sp));
631 memcpy((caddr_t)&sp.spinfo_address, sa, sa->sa_len);
632 if (getsockopt(sd, IPPROTO_SCTP,
633 SCTP_GET_PEER_ADDR_INFO, &sp, &siz) != 0) {
634 /* We depend on the fact that 0 can never be returned */
635 return ((sctp_assoc_t) 0);
636 }
637 return (sp.spinfo_assoc_id);
638 }
639
640 ssize_t
sctp_send(int sd,const void * data,size_t len,const struct sctp_sndrcvinfo * sinfo,int flags)641 sctp_send(int sd, const void *data, size_t len,
642 const struct sctp_sndrcvinfo *sinfo,
643 int flags)
644 {
645
646 #ifdef SYS_sctp_generic_sendmsg
647 struct sockaddr *to = NULL;
648
649 return (syscall(SYS_sctp_generic_sendmsg, sd,
650 data, len, to, 0, sinfo, flags));
651 #else
652 struct msghdr msg;
653 struct iovec iov;
654 char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))];
655 struct cmsghdr *cmsg;
656
657 if (sinfo == NULL) {
658 errno = EINVAL;
659 return (-1);
660 }
661 iov.iov_base = (char *)data;
662 iov.iov_len = len;
663
664 msg.msg_name = NULL;
665 msg.msg_namelen = 0;
666 msg.msg_iov = &iov;
667 msg.msg_iovlen = 1;
668 msg.msg_control = cmsgbuf;
669 msg.msg_controllen = CMSG_SPACE(sizeof(struct sctp_sndrcvinfo));
670 msg.msg_flags = 0;
671 cmsg = (struct cmsghdr *)cmsgbuf;
672 cmsg->cmsg_level = IPPROTO_SCTP;
673 cmsg->cmsg_type = SCTP_SNDRCV;
674 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo));
675 memcpy(CMSG_DATA(cmsg), sinfo, sizeof(struct sctp_sndrcvinfo));
676 return (sendmsg(sd, &msg, flags));
677 #endif
678 }
679
680
681
682 ssize_t
sctp_sendx(int sd,const void * msg,size_t msg_len,struct sockaddr * addrs,int addrcnt,struct sctp_sndrcvinfo * sinfo,int flags)683 sctp_sendx(int sd, const void *msg, size_t msg_len,
684 struct sockaddr *addrs, int addrcnt,
685 struct sctp_sndrcvinfo *sinfo,
686 int flags)
687 {
688 struct sctp_sndrcvinfo __sinfo;
689 ssize_t ret;
690 int i, cnt, *aa, saved_errno;
691 char *buf;
692 int no_end_cx = 0;
693 size_t len, add_len;
694 struct sockaddr *at;
695
696 if (addrs == NULL) {
697 errno = EINVAL;
698 return (-1);
699 }
700 #ifdef SYS_sctp_generic_sendmsg
701 if (addrcnt == 1) {
702 socklen_t l;
703
704 /*
705 * Quick way, we don't need to do a connectx so lets use the
706 * syscall directly.
707 */
708 l = addrs->sa_len;
709 return (syscall(SYS_sctp_generic_sendmsg, sd,
710 msg, msg_len, addrs, l, sinfo, flags));
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_ssn = 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
988 if ((addrcnt < 0) ||
989 (iovcnt < 0) ||
990 ((addrs == NULL) && (addrcnt > 0)) ||
991 ((addrs != NULL) && (addrcnt == 0)) ||
992 ((iov == NULL) && (iovcnt > 0)) ||
993 ((iov != NULL) && (iovcnt == 0))) {
994 errno = EINVAL;
995 return (-1);
996 }
997 cmsgbuf = malloc(CMSG_SPACE(sizeof(struct sctp_sndinfo)) +
998 CMSG_SPACE(sizeof(struct sctp_prinfo)) +
999 CMSG_SPACE(sizeof(struct sctp_authinfo)) +
1000 (size_t)addrcnt * CMSG_SPACE(sizeof(struct in6_addr)));
1001 if (cmsgbuf == NULL) {
1002 errno = ENOMEM;
1003 return (-1);
1004 }
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 break;
1029 case SCTP_SENDV_PRINFO:
1030 if ((info == NULL) || (infolen < sizeof(struct sctp_prinfo))) {
1031 free(cmsgbuf);
1032 errno = EINVAL;
1033 return (-1);
1034 }
1035 cmsg->cmsg_level = IPPROTO_SCTP;
1036 cmsg->cmsg_type = SCTP_PRINFO;
1037 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_prinfo));
1038 memcpy(CMSG_DATA(cmsg), info, sizeof(struct sctp_prinfo));
1039 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_prinfo));
1040 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_prinfo)));
1041 break;
1042 case SCTP_SENDV_AUTHINFO:
1043 if ((info == NULL) || (infolen < sizeof(struct sctp_authinfo))) {
1044 free(cmsgbuf);
1045 errno = EINVAL;
1046 return (-1);
1047 }
1048 cmsg->cmsg_level = IPPROTO_SCTP;
1049 cmsg->cmsg_type = SCTP_AUTHINFO;
1050 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_authinfo));
1051 memcpy(CMSG_DATA(cmsg), info, sizeof(struct sctp_authinfo));
1052 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_authinfo));
1053 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_authinfo)));
1054 break;
1055 case SCTP_SENDV_SPA:
1056 if ((info == NULL) || (infolen < sizeof(struct sctp_sendv_spa))) {
1057 free(cmsgbuf);
1058 errno = EINVAL;
1059 return (-1);
1060 }
1061 spa_info = (struct sctp_sendv_spa *)info;
1062 if (spa_info->sendv_flags & SCTP_SEND_SNDINFO_VALID) {
1063 cmsg->cmsg_level = IPPROTO_SCTP;
1064 cmsg->cmsg_type = SCTP_SNDINFO;
1065 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndinfo));
1066 memcpy(CMSG_DATA(cmsg), &spa_info->sendv_sndinfo, sizeof(struct sctp_sndinfo));
1067 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndinfo));
1068 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_sndinfo)));
1069 }
1070 if (spa_info->sendv_flags & SCTP_SEND_PRINFO_VALID) {
1071 cmsg->cmsg_level = IPPROTO_SCTP;
1072 cmsg->cmsg_type = SCTP_PRINFO;
1073 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_prinfo));
1074 memcpy(CMSG_DATA(cmsg), &spa_info->sendv_prinfo, sizeof(struct sctp_prinfo));
1075 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_prinfo));
1076 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_prinfo)));
1077 }
1078 if (spa_info->sendv_flags & SCTP_SEND_AUTHINFO_VALID) {
1079 cmsg->cmsg_level = IPPROTO_SCTP;
1080 cmsg->cmsg_type = SCTP_AUTHINFO;
1081 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_authinfo));
1082 memcpy(CMSG_DATA(cmsg), &spa_info->sendv_authinfo, sizeof(struct sctp_authinfo));
1083 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_authinfo));
1084 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_authinfo)));
1085 }
1086 break;
1087 default:
1088 free(cmsgbuf);
1089 errno = EINVAL;
1090 return (-1);
1091 }
1092 addr = addrs;
1093 msg.msg_name = NULL;
1094 msg.msg_namelen = 0;
1095
1096 for (i = 0; i < addrcnt; i++) {
1097 switch (addr->sa_family) {
1098 case AF_INET:
1099 addr_len = (socklen_t) sizeof(struct sockaddr_in);
1100 addr_in = (struct sockaddr_in *)addr;
1101 if (addr_in->sin_len != addr_len) {
1102 free(cmsgbuf);
1103 errno = EINVAL;
1104 return (-1);
1105 }
1106 if (i == 0) {
1107 port = addr_in->sin_port;
1108 } else {
1109 if (port == addr_in->sin_port) {
1110 cmsg->cmsg_level = IPPROTO_SCTP;
1111 cmsg->cmsg_type = SCTP_DSTADDRV4;
1112 cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_addr));
1113 memcpy(CMSG_DATA(cmsg), &addr_in->sin_addr, sizeof(struct in_addr));
1114 msg.msg_controllen += CMSG_SPACE(sizeof(struct in_addr));
1115 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct in_addr)));
1116 } else {
1117 free(cmsgbuf);
1118 errno = EINVAL;
1119 return (-1);
1120 }
1121 }
1122 break;
1123 case AF_INET6:
1124 addr_len = (socklen_t) sizeof(struct sockaddr_in6);
1125 addr_in6 = (struct sockaddr_in6 *)addr;
1126 if (addr_in6->sin6_len != addr_len) {
1127 free(cmsgbuf);
1128 errno = EINVAL;
1129 return (-1);
1130 }
1131 if (i == 0) {
1132 port = addr_in6->sin6_port;
1133 } else {
1134 if (port == addr_in6->sin6_port) {
1135 cmsg->cmsg_level = IPPROTO_SCTP;
1136 cmsg->cmsg_type = SCTP_DSTADDRV6;
1137 cmsg->cmsg_len = CMSG_LEN(sizeof(struct in6_addr));
1138 memcpy(CMSG_DATA(cmsg), &addr_in6->sin6_addr, sizeof(struct in6_addr));
1139 msg.msg_controllen += CMSG_SPACE(sizeof(struct in6_addr));
1140 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct in6_addr)));
1141 } else {
1142 free(cmsgbuf);
1143 errno = EINVAL;
1144 return (-1);
1145 }
1146 }
1147 break;
1148 default:
1149 free(cmsgbuf);
1150 errno = EINVAL;
1151 return (-1);
1152 }
1153 if (i == 0) {
1154 msg.msg_name = addr;
1155 msg.msg_namelen = addr_len;
1156 }
1157 addr = (struct sockaddr *)((caddr_t)addr + addr_len);
1158 }
1159 if (msg.msg_controllen == 0) {
1160 msg.msg_control = NULL;
1161 }
1162 msg.msg_iov = (struct iovec *)iov;
1163 msg.msg_iovlen = iovcnt;
1164 msg.msg_flags = 0;
1165 ret = sendmsg(sd, &msg, flags);
1166 free(cmsgbuf);
1167 return (ret);
1168 }
1169
1170
1171 #if !defined(SYS_sctp_peeloff) && !defined(HAVE_SCTP_PEELOFF_SOCKOPT)
1172
1173 int
sctp_peeloff(int sd,sctp_assoc_t assoc_id)1174 sctp_peeloff(int sd, sctp_assoc_t assoc_id)
1175 {
1176 /* NOT supported, return invalid sd */
1177 errno = ENOTSUP;
1178 return (-1);
1179 }
1180
1181 #endif
1182 #if defined(SYS_sctp_peeloff) && !defined(HAVE_SCTP_PEELOFF_SOCKOPT)
1183 int
sctp_peeloff(int sd,sctp_assoc_t assoc_id)1184 sctp_peeloff(int sd, sctp_assoc_t assoc_id)
1185 {
1186 return (syscall(SYS_sctp_peeloff, sd, assoc_id));
1187 }
1188
1189 #endif
1190
1191 #undef SCTP_CONTROL_VEC_SIZE_RCV
1192