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 <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 sctp_getaddresses *gaddrs;
174 struct sockaddr *sa;
175 struct sockaddr_in *sin;
176 struct sockaddr_in6 *sin6;
177 int i;
178 size_t argsz;
179 uint16_t sport = 0;
180
181 /* validate the flags */
182 if ((flags != SCTP_BINDX_ADD_ADDR) &&
183 (flags != SCTP_BINDX_REM_ADDR)) {
184 errno = EFAULT;
185 return (-1);
186 }
187 /* validate the address count and list */
188 if ((addrcnt <= 0) || (addrs == NULL)) {
189 errno = EINVAL;
190 return (-1);
191 }
192 /* First pre-screen the addresses */
193 sa = addrs;
194 for (i = 0; i < addrcnt; i++) {
195 switch (sa->sa_family) {
196 case AF_INET:
197 if (sa->sa_len != sizeof(struct sockaddr_in)) {
198 errno = EINVAL;
199 return (-1);
200 }
201 sin = (struct sockaddr_in *)sa;
202 if (sin->sin_port) {
203 /* non-zero port, check or save */
204 if (sport) {
205 /* Check against our port */
206 if (sport != sin->sin_port) {
207 errno = EINVAL;
208 return (-1);
209 }
210 } else {
211 /* save off the port */
212 sport = sin->sin_port;
213 }
214 }
215 break;
216 case AF_INET6:
217 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
218 errno = EINVAL;
219 return (-1);
220 }
221 sin6 = (struct sockaddr_in6 *)sa;
222 if (sin6->sin6_port) {
223 /* non-zero port, check or save */
224 if (sport) {
225 /* Check against our port */
226 if (sport != sin6->sin6_port) {
227 errno = EINVAL;
228 return (-1);
229 }
230 } else {
231 /* save off the port */
232 sport = sin6->sin6_port;
233 }
234 }
235 break;
236 default:
237 /* Invalid address family specified. */
238 errno = EAFNOSUPPORT;
239 return (-1);
240 }
241 sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len);
242 }
243 argsz = sizeof(struct sctp_getaddresses) +
244 sizeof(struct sockaddr_storage);
245 if ((gaddrs = (struct sctp_getaddresses *)malloc(argsz)) == NULL) {
246 errno = ENOMEM;
247 return (-1);
248 }
249 sa = addrs;
250 for (i = 0; i < addrcnt; i++) {
251 memset(gaddrs, 0, argsz);
252 gaddrs->sget_assoc_id = 0;
253 memcpy(gaddrs->addr, sa, sa->sa_len);
254 /*
255 * Now, if there was a port mentioned, assure that the first
256 * address has that port to make sure it fails or succeeds
257 * correctly.
258 */
259 if ((i == 0) && (sport != 0)) {
260 switch (gaddrs->addr->sa_family) {
261 case AF_INET:
262 sin = (struct sockaddr_in *)gaddrs->addr;
263 sin->sin_port = sport;
264 break;
265 case AF_INET6:
266 sin6 = (struct sockaddr_in6 *)gaddrs->addr;
267 sin6->sin6_port = sport;
268 break;
269 }
270 }
271 if (setsockopt(sd, IPPROTO_SCTP, flags, gaddrs,
272 (socklen_t) argsz) != 0) {
273 free(gaddrs);
274 return (-1);
275 }
276 sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len);
277 }
278 free(gaddrs);
279 return (0);
280 }
281
282 int
sctp_opt_info(int sd,sctp_assoc_t id,int opt,void * arg,socklen_t * size)283 sctp_opt_info(int sd, sctp_assoc_t id, int opt, void *arg, socklen_t * size)
284 {
285 if (arg == NULL) {
286 errno = EINVAL;
287 return (-1);
288 }
289 if ((id == SCTP_CURRENT_ASSOC) ||
290 (id == SCTP_ALL_ASSOC)) {
291 errno = EINVAL;
292 return (-1);
293 }
294 switch (opt) {
295 case SCTP_RTOINFO:
296 ((struct sctp_rtoinfo *)arg)->srto_assoc_id = id;
297 break;
298 case SCTP_ASSOCINFO:
299 ((struct sctp_assocparams *)arg)->sasoc_assoc_id = id;
300 break;
301 case SCTP_DEFAULT_SEND_PARAM:
302 ((struct sctp_assocparams *)arg)->sasoc_assoc_id = id;
303 break;
304 case SCTP_PRIMARY_ADDR:
305 ((struct sctp_setprim *)arg)->ssp_assoc_id = id;
306 break;
307 case SCTP_PEER_ADDR_PARAMS:
308 ((struct sctp_paddrparams *)arg)->spp_assoc_id = id;
309 break;
310 case SCTP_MAXSEG:
311 ((struct sctp_assoc_value *)arg)->assoc_id = id;
312 break;
313 case SCTP_AUTH_KEY:
314 ((struct sctp_authkey *)arg)->sca_assoc_id = id;
315 break;
316 case SCTP_AUTH_ACTIVE_KEY:
317 ((struct sctp_authkeyid *)arg)->scact_assoc_id = id;
318 break;
319 case SCTP_DELAYED_SACK:
320 ((struct sctp_sack_info *)arg)->sack_assoc_id = id;
321 break;
322 case SCTP_CONTEXT:
323 ((struct sctp_assoc_value *)arg)->assoc_id = id;
324 break;
325 case SCTP_STATUS:
326 ((struct sctp_status *)arg)->sstat_assoc_id = id;
327 break;
328 case SCTP_GET_PEER_ADDR_INFO:
329 ((struct sctp_paddrinfo *)arg)->spinfo_assoc_id = id;
330 break;
331 case SCTP_PEER_AUTH_CHUNKS:
332 ((struct sctp_authchunks *)arg)->gauth_assoc_id = id;
333 break;
334 case SCTP_LOCAL_AUTH_CHUNKS:
335 ((struct sctp_authchunks *)arg)->gauth_assoc_id = id;
336 break;
337 case SCTP_TIMEOUTS:
338 ((struct sctp_timeouts *)arg)->stimo_assoc_id = id;
339 break;
340 case SCTP_EVENT:
341 ((struct sctp_event *)arg)->se_assoc_id = id;
342 break;
343 case SCTP_DEFAULT_SNDINFO:
344 ((struct sctp_sndinfo *)arg)->snd_assoc_id = id;
345 break;
346 case SCTP_DEFAULT_PRINFO:
347 ((struct sctp_default_prinfo *)arg)->pr_assoc_id = id;
348 break;
349 case SCTP_PEER_ADDR_THLDS:
350 ((struct sctp_paddrthlds *)arg)->spt_assoc_id = id;
351 break;
352 case SCTP_REMOTE_UDP_ENCAPS_PORT:
353 ((struct sctp_udpencaps *)arg)->sue_assoc_id = id;
354 break;
355 case SCTP_ECN_SUPPORTED:
356 ((struct sctp_assoc_value *)arg)->assoc_id = id;
357 break;
358 case SCTP_PR_SUPPORTED:
359 ((struct sctp_assoc_value *)arg)->assoc_id = id;
360 break;
361 case SCTP_AUTH_SUPPORTED:
362 ((struct sctp_assoc_value *)arg)->assoc_id = id;
363 break;
364 case SCTP_ASCONF_SUPPORTED:
365 ((struct sctp_assoc_value *)arg)->assoc_id = id;
366 break;
367 case SCTP_RECONFIG_SUPPORTED:
368 ((struct sctp_assoc_value *)arg)->assoc_id = id;
369 break;
370 case SCTP_NRSACK_SUPPORTED:
371 ((struct sctp_assoc_value *)arg)->assoc_id = id;
372 break;
373 case SCTP_PKTDROP_SUPPORTED:
374 ((struct sctp_assoc_value *)arg)->assoc_id = id;
375 break;
376 case SCTP_MAX_BURST:
377 ((struct sctp_assoc_value *)arg)->assoc_id = id;
378 break;
379 case SCTP_ENABLE_STREAM_RESET:
380 ((struct sctp_assoc_value *)arg)->assoc_id = id;
381 break;
382 case SCTP_PR_STREAM_STATUS:
383 ((struct sctp_prstatus *)arg)->sprstat_assoc_id = id;
384 break;
385 case SCTP_PR_ASSOC_STATUS:
386 ((struct sctp_prstatus *)arg)->sprstat_assoc_id = id;
387 break;
388 case SCTP_MAX_CWND:
389 ((struct sctp_assoc_value *)arg)->assoc_id = id;
390 break;
391 default:
392 break;
393 }
394 return (getsockopt(sd, IPPROTO_SCTP, opt, arg, size));
395 }
396
397 int
sctp_getpaddrs(int sd,sctp_assoc_t id,struct sockaddr ** raddrs)398 sctp_getpaddrs(int sd, sctp_assoc_t id, struct sockaddr **raddrs)
399 {
400 struct sctp_getaddresses *addrs;
401 struct sockaddr *sa;
402 sctp_assoc_t asoc;
403 caddr_t lim;
404 socklen_t opt_len;
405 int cnt;
406
407 if (raddrs == NULL) {
408 errno = EFAULT;
409 return (-1);
410 }
411 asoc = id;
412 opt_len = (socklen_t) sizeof(sctp_assoc_t);
413 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_REMOTE_ADDR_SIZE,
414 &asoc, &opt_len) != 0) {
415 return (-1);
416 }
417 /* size required is returned in 'asoc' */
418 opt_len = (socklen_t) ((size_t)asoc + sizeof(sctp_assoc_t));
419 addrs = calloc(1, (size_t)opt_len);
420 if (addrs == NULL) {
421 errno = ENOMEM;
422 return (-1);
423 }
424 addrs->sget_assoc_id = id;
425 /* Now lets get the array of addresses */
426 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_PEER_ADDRESSES,
427 addrs, &opt_len) != 0) {
428 free(addrs);
429 return (-1);
430 }
431 *raddrs = (struct sockaddr *)&addrs->addr[0];
432 cnt = 0;
433 sa = (struct sockaddr *)&addrs->addr[0];
434 lim = (caddr_t)addrs + opt_len;
435 while (((caddr_t)sa < lim) && (sa->sa_len > 0)) {
436 sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len);
437 cnt++;
438 }
439 return (cnt);
440 }
441
442 void
sctp_freepaddrs(struct sockaddr * addrs)443 sctp_freepaddrs(struct sockaddr *addrs)
444 {
445 void *fr_addr;
446
447 /* Take away the hidden association id */
448 fr_addr = (void *)((caddr_t)addrs - sizeof(sctp_assoc_t));
449 /* Now free it */
450 free(fr_addr);
451 }
452
453 int
sctp_getladdrs(int sd,sctp_assoc_t id,struct sockaddr ** raddrs)454 sctp_getladdrs(int sd, sctp_assoc_t id, struct sockaddr **raddrs)
455 {
456 struct sctp_getaddresses *addrs;
457 caddr_t lim;
458 struct sockaddr *sa;
459 size_t size_of_addresses;
460 socklen_t opt_len;
461 int cnt;
462
463 if (raddrs == NULL) {
464 errno = EFAULT;
465 return (-1);
466 }
467 size_of_addresses = 0;
468 opt_len = (socklen_t) sizeof(int);
469 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_LOCAL_ADDR_SIZE,
470 &size_of_addresses, &opt_len) != 0) {
471 errno = ENOMEM;
472 return (-1);
473 }
474 if (size_of_addresses == 0) {
475 errno = ENOTCONN;
476 return (-1);
477 }
478 opt_len = (socklen_t) (size_of_addresses + sizeof(sctp_assoc_t));
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 ssize_t ret;
704
705 /*
706 * Quick way, we don't need to do a connectx so lets use the
707 * syscall directly.
708 */
709 l = addrs->sa_len;
710 ret = syscall(SYS_sctp_generic_sendmsg, sd,
711 msg, msg_len, addrs, l, sinfo, flags);
712 if ((ret >= 0) && (sinfo != NULL)) {
713 sinfo->sinfo_assoc_id = sctp_getassocid(sd, addrs);
714 }
715 return (ret);
716 }
717 #endif
718
719 len = sizeof(int);
720 at = addrs;
721 cnt = 0;
722 /* validate all the addresses and get the size */
723 for (i = 0; i < addrcnt; i++) {
724 if (at->sa_family == AF_INET) {
725 add_len = sizeof(struct sockaddr_in);
726 } else if (at->sa_family == AF_INET6) {
727 add_len = sizeof(struct sockaddr_in6);
728 } else {
729 errno = EINVAL;
730 return (-1);
731 }
732 len += add_len;
733 at = (struct sockaddr *)((caddr_t)at + add_len);
734 cnt++;
735 }
736 /* do we have any? */
737 if (cnt == 0) {
738 errno = EINVAL;
739 return (-1);
740 }
741 buf = malloc(len);
742 if (buf == NULL) {
743 errno = ENOMEM;
744 return (-1);
745 }
746 aa = (int *)buf;
747 *aa = cnt;
748 aa++;
749 memcpy((caddr_t)aa, addrs, (size_t)(len - sizeof(int)));
750 ret = setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_DELAYED, (void *)buf,
751 (socklen_t) len);
752
753 free(buf);
754 if (ret != 0) {
755 if (errno == EALREADY) {
756 no_end_cx = 1;
757 goto continue_send;
758 }
759 return (ret);
760 }
761 continue_send:
762 if (sinfo == NULL) {
763 sinfo = &__sinfo;
764 memset(&__sinfo, 0, sizeof(__sinfo));
765 }
766 sinfo->sinfo_assoc_id = sctp_getassocid(sd, addrs);
767 if (sinfo->sinfo_assoc_id == 0) {
768 (void)setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_COMPLETE, (void *)addrs,
769 (socklen_t) addrs->sa_len);
770 errno = ENOENT;
771 return (-1);
772 }
773 ret = sctp_send(sd, msg, msg_len, sinfo, flags);
774 saved_errno = errno;
775 if (no_end_cx == 0)
776 (void)setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_COMPLETE, (void *)addrs,
777 (socklen_t) addrs->sa_len);
778
779 errno = saved_errno;
780 return (ret);
781 }
782
783 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)784 sctp_sendmsgx(int sd,
785 const void *msg,
786 size_t len,
787 struct sockaddr *addrs,
788 int addrcnt,
789 uint32_t ppid,
790 uint32_t flags,
791 uint16_t stream_no,
792 uint32_t timetolive,
793 uint32_t context)
794 {
795 struct sctp_sndrcvinfo sinfo;
796
797 memset((void *)&sinfo, 0, sizeof(struct sctp_sndrcvinfo));
798 sinfo.sinfo_ppid = ppid;
799 sinfo.sinfo_flags = flags;
800 sinfo.sinfo_stream = stream_no;
801 sinfo.sinfo_timetolive = timetolive;
802 sinfo.sinfo_context = context;
803 return (sctp_sendx(sd, msg, len, addrs, addrcnt, &sinfo, 0));
804 }
805
806 ssize_t
sctp_recvmsg(int s,void * dbuf,size_t len,struct sockaddr * from,socklen_t * fromlen,struct sctp_sndrcvinfo * sinfo,int * msg_flags)807 sctp_recvmsg(int s,
808 void *dbuf,
809 size_t len,
810 struct sockaddr *from,
811 socklen_t * fromlen,
812 struct sctp_sndrcvinfo *sinfo,
813 int *msg_flags)
814 {
815 #ifdef SYS_sctp_generic_recvmsg
816 struct iovec iov;
817
818 iov.iov_base = dbuf;
819 iov.iov_len = len;
820 return (syscall(SYS_sctp_generic_recvmsg, s,
821 &iov, 1, from, fromlen, sinfo, msg_flags));
822 #else
823 ssize_t sz;
824 struct msghdr msg;
825 struct iovec iov;
826 char cmsgbuf[SCTP_CONTROL_VEC_SIZE_RCV];
827 struct cmsghdr *cmsg;
828
829 if (msg_flags == NULL) {
830 errno = EINVAL;
831 return (-1);
832 }
833 iov.iov_base = dbuf;
834 iov.iov_len = len;
835 msg.msg_name = (caddr_t)from;
836 if (fromlen == NULL)
837 msg.msg_namelen = 0;
838 else
839 msg.msg_namelen = *fromlen;
840 msg.msg_iov = &iov;
841 msg.msg_iovlen = 1;
842 msg.msg_control = cmsgbuf;
843 msg.msg_controllen = sizeof(cmsgbuf);
844 msg.msg_flags = 0;
845 sz = recvmsg(s, &msg, *msg_flags);
846 *msg_flags = msg.msg_flags;
847 if (sz <= 0) {
848 return (sz);
849 }
850 if (sinfo) {
851 sinfo->sinfo_assoc_id = 0;
852 }
853 if ((msg.msg_controllen > 0) && (sinfo != NULL)) {
854 /*
855 * parse through and see if we find the sctp_sndrcvinfo (if
856 * the user wants it).
857 */
858 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) {
859 if (cmsg->cmsg_level != IPPROTO_SCTP) {
860 continue;
861 }
862 if (cmsg->cmsg_type == SCTP_SNDRCV) {
863 memcpy(sinfo, CMSG_DATA(cmsg), sizeof(struct sctp_sndrcvinfo));
864 break;
865 }
866 if (cmsg->cmsg_type == SCTP_EXTRCV) {
867 /*
868 * Let's hope that the user provided enough
869 * enough memory. At least he asked for more
870 * information.
871 */
872 memcpy(sinfo, CMSG_DATA(cmsg), sizeof(struct sctp_extrcvinfo));
873 break;
874 }
875 }
876 }
877 return (sz);
878 #endif
879 }
880
881 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)882 sctp_recvv(int sd,
883 const struct iovec *iov,
884 int iovlen,
885 struct sockaddr *from,
886 socklen_t * fromlen,
887 void *info,
888 socklen_t * infolen,
889 unsigned int *infotype,
890 int *flags)
891 {
892 char cmsgbuf[SCTP_CONTROL_VEC_SIZE_RCV];
893 struct msghdr msg;
894 struct cmsghdr *cmsg;
895 ssize_t ret;
896 struct sctp_rcvinfo *rcvinfo;
897 struct sctp_nxtinfo *nxtinfo;
898
899 if (((info != NULL) && (infolen == NULL)) ||
900 ((info == NULL) && (infolen != NULL) && (*infolen != 0)) ||
901 ((info != NULL) && (infotype == NULL))) {
902 errno = EINVAL;
903 return (-1);
904 }
905 if (infotype) {
906 *infotype = SCTP_RECVV_NOINFO;
907 }
908 msg.msg_name = from;
909 if (fromlen == NULL) {
910 msg.msg_namelen = 0;
911 } else {
912 msg.msg_namelen = *fromlen;
913 }
914 msg.msg_iov = (struct iovec *)iov;
915 msg.msg_iovlen = iovlen;
916 msg.msg_control = cmsgbuf;
917 msg.msg_controllen = sizeof(cmsgbuf);
918 msg.msg_flags = 0;
919 ret = recvmsg(sd, &msg, *flags);
920 *flags = msg.msg_flags;
921 if ((ret > 0) &&
922 (msg.msg_controllen > 0) &&
923 (infotype != NULL) &&
924 (infolen != NULL) &&
925 (*infolen > 0)) {
926 rcvinfo = NULL;
927 nxtinfo = NULL;
928 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) {
929 if (cmsg->cmsg_level != IPPROTO_SCTP) {
930 continue;
931 }
932 if (cmsg->cmsg_type == SCTP_RCVINFO) {
933 rcvinfo = (struct sctp_rcvinfo *)CMSG_DATA(cmsg);
934 if (nxtinfo != NULL) {
935 break;
936 } else {
937 continue;
938 }
939 }
940 if (cmsg->cmsg_type == SCTP_NXTINFO) {
941 nxtinfo = (struct sctp_nxtinfo *)CMSG_DATA(cmsg);
942 if (rcvinfo != NULL) {
943 break;
944 } else {
945 continue;
946 }
947 }
948 }
949 if (rcvinfo != NULL) {
950 if ((nxtinfo != NULL) && (*infolen >= sizeof(struct sctp_recvv_rn))) {
951 struct sctp_recvv_rn *rn_info;
952
953 rn_info = (struct sctp_recvv_rn *)info;
954 rn_info->recvv_rcvinfo = *rcvinfo;
955 rn_info->recvv_nxtinfo = *nxtinfo;
956 *infolen = (socklen_t) sizeof(struct sctp_recvv_rn);
957 *infotype = SCTP_RECVV_RN;
958 } else if (*infolen >= sizeof(struct sctp_rcvinfo)) {
959 memcpy(info, rcvinfo, sizeof(struct sctp_rcvinfo));
960 *infolen = (socklen_t) sizeof(struct sctp_rcvinfo);
961 *infotype = SCTP_RECVV_RCVINFO;
962 }
963 } else if (nxtinfo != NULL) {
964 if (*infolen >= sizeof(struct sctp_nxtinfo)) {
965 memcpy(info, nxtinfo, sizeof(struct sctp_nxtinfo));
966 *infolen = (socklen_t) sizeof(struct sctp_nxtinfo);
967 *infotype = SCTP_RECVV_NXTINFO;
968 }
969 }
970 }
971 return (ret);
972 }
973
974 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)975 sctp_sendv(int sd,
976 const struct iovec *iov, int iovcnt,
977 struct sockaddr *addrs, int addrcnt,
978 void *info, socklen_t infolen, unsigned int infotype,
979 int flags)
980 {
981 ssize_t ret;
982 int i;
983 socklen_t addr_len;
984 struct msghdr msg;
985 in_port_t port;
986 struct sctp_sendv_spa *spa_info;
987 struct cmsghdr *cmsg;
988 char *cmsgbuf;
989 struct sockaddr *addr;
990 struct sockaddr_in *addr_in;
991 struct sockaddr_in6 *addr_in6;
992 sctp_assoc_t *assoc_id;
993
994 if ((addrcnt < 0) ||
995 (iovcnt < 0) ||
996 ((addrs == NULL) && (addrcnt > 0)) ||
997 ((addrs != NULL) && (addrcnt == 0)) ||
998 ((iov == NULL) && (iovcnt > 0)) ||
999 ((iov != NULL) && (iovcnt == 0))) {
1000 errno = EINVAL;
1001 return (-1);
1002 }
1003 cmsgbuf = malloc(CMSG_SPACE(sizeof(struct sctp_sndinfo)) +
1004 CMSG_SPACE(sizeof(struct sctp_prinfo)) +
1005 CMSG_SPACE(sizeof(struct sctp_authinfo)) +
1006 (size_t)addrcnt * CMSG_SPACE(sizeof(struct in6_addr)));
1007 if (cmsgbuf == NULL) {
1008 errno = ENOMEM;
1009 return (-1);
1010 }
1011 assoc_id = NULL;
1012 msg.msg_control = cmsgbuf;
1013 msg.msg_controllen = 0;
1014 cmsg = (struct cmsghdr *)cmsgbuf;
1015 switch (infotype) {
1016 case SCTP_SENDV_NOINFO:
1017 if ((infolen != 0) || (info != NULL)) {
1018 free(cmsgbuf);
1019 errno = EINVAL;
1020 return (-1);
1021 }
1022 break;
1023 case SCTP_SENDV_SNDINFO:
1024 if ((info == NULL) || (infolen < sizeof(struct sctp_sndinfo))) {
1025 free(cmsgbuf);
1026 errno = EINVAL;
1027 return (-1);
1028 }
1029 cmsg->cmsg_level = IPPROTO_SCTP;
1030 cmsg->cmsg_type = SCTP_SNDINFO;
1031 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndinfo));
1032 memcpy(CMSG_DATA(cmsg), info, sizeof(struct sctp_sndinfo));
1033 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndinfo));
1034 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_sndinfo)));
1035 assoc_id = &(((struct sctp_sndinfo *)info)->snd_assoc_id);
1036 break;
1037 case SCTP_SENDV_PRINFO:
1038 if ((info == NULL) || (infolen < sizeof(struct sctp_prinfo))) {
1039 free(cmsgbuf);
1040 errno = EINVAL;
1041 return (-1);
1042 }
1043 cmsg->cmsg_level = IPPROTO_SCTP;
1044 cmsg->cmsg_type = SCTP_PRINFO;
1045 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_prinfo));
1046 memcpy(CMSG_DATA(cmsg), info, sizeof(struct sctp_prinfo));
1047 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_prinfo));
1048 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_prinfo)));
1049 break;
1050 case SCTP_SENDV_AUTHINFO:
1051 if ((info == NULL) || (infolen < sizeof(struct sctp_authinfo))) {
1052 free(cmsgbuf);
1053 errno = EINVAL;
1054 return (-1);
1055 }
1056 cmsg->cmsg_level = IPPROTO_SCTP;
1057 cmsg->cmsg_type = SCTP_AUTHINFO;
1058 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_authinfo));
1059 memcpy(CMSG_DATA(cmsg), info, sizeof(struct sctp_authinfo));
1060 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_authinfo));
1061 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_authinfo)));
1062 break;
1063 case SCTP_SENDV_SPA:
1064 if ((info == NULL) || (infolen < sizeof(struct sctp_sendv_spa))) {
1065 free(cmsgbuf);
1066 errno = EINVAL;
1067 return (-1);
1068 }
1069 spa_info = (struct sctp_sendv_spa *)info;
1070 if (spa_info->sendv_flags & SCTP_SEND_SNDINFO_VALID) {
1071 cmsg->cmsg_level = IPPROTO_SCTP;
1072 cmsg->cmsg_type = SCTP_SNDINFO;
1073 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndinfo));
1074 memcpy(CMSG_DATA(cmsg), &spa_info->sendv_sndinfo, sizeof(struct sctp_sndinfo));
1075 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndinfo));
1076 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_sndinfo)));
1077 assoc_id = &(spa_info->sendv_sndinfo.snd_assoc_id);
1078 }
1079 if (spa_info->sendv_flags & SCTP_SEND_PRINFO_VALID) {
1080 cmsg->cmsg_level = IPPROTO_SCTP;
1081 cmsg->cmsg_type = SCTP_PRINFO;
1082 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_prinfo));
1083 memcpy(CMSG_DATA(cmsg), &spa_info->sendv_prinfo, sizeof(struct sctp_prinfo));
1084 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_prinfo));
1085 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_prinfo)));
1086 }
1087 if (spa_info->sendv_flags & SCTP_SEND_AUTHINFO_VALID) {
1088 cmsg->cmsg_level = IPPROTO_SCTP;
1089 cmsg->cmsg_type = SCTP_AUTHINFO;
1090 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_authinfo));
1091 memcpy(CMSG_DATA(cmsg), &spa_info->sendv_authinfo, sizeof(struct sctp_authinfo));
1092 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_authinfo));
1093 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_authinfo)));
1094 }
1095 break;
1096 default:
1097 free(cmsgbuf);
1098 errno = EINVAL;
1099 return (-1);
1100 }
1101 addr = addrs;
1102 msg.msg_name = NULL;
1103 msg.msg_namelen = 0;
1104
1105 for (i = 0; i < addrcnt; i++) {
1106 switch (addr->sa_family) {
1107 case AF_INET:
1108 addr_len = (socklen_t) sizeof(struct sockaddr_in);
1109 addr_in = (struct sockaddr_in *)addr;
1110 if (addr_in->sin_len != addr_len) {
1111 free(cmsgbuf);
1112 errno = EINVAL;
1113 return (-1);
1114 }
1115 if (i == 0) {
1116 port = addr_in->sin_port;
1117 } else {
1118 if (port == addr_in->sin_port) {
1119 cmsg->cmsg_level = IPPROTO_SCTP;
1120 cmsg->cmsg_type = SCTP_DSTADDRV4;
1121 cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_addr));
1122 memcpy(CMSG_DATA(cmsg), &addr_in->sin_addr, sizeof(struct in_addr));
1123 msg.msg_controllen += CMSG_SPACE(sizeof(struct in_addr));
1124 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct in_addr)));
1125 } else {
1126 free(cmsgbuf);
1127 errno = EINVAL;
1128 return (-1);
1129 }
1130 }
1131 break;
1132 case AF_INET6:
1133 addr_len = (socklen_t) sizeof(struct sockaddr_in6);
1134 addr_in6 = (struct sockaddr_in6 *)addr;
1135 if (addr_in6->sin6_len != addr_len) {
1136 free(cmsgbuf);
1137 errno = EINVAL;
1138 return (-1);
1139 }
1140 if (i == 0) {
1141 port = addr_in6->sin6_port;
1142 } else {
1143 if (port == addr_in6->sin6_port) {
1144 cmsg->cmsg_level = IPPROTO_SCTP;
1145 cmsg->cmsg_type = SCTP_DSTADDRV6;
1146 cmsg->cmsg_len = CMSG_LEN(sizeof(struct in6_addr));
1147 memcpy(CMSG_DATA(cmsg), &addr_in6->sin6_addr, sizeof(struct in6_addr));
1148 msg.msg_controllen += CMSG_SPACE(sizeof(struct in6_addr));
1149 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct in6_addr)));
1150 } else {
1151 free(cmsgbuf);
1152 errno = EINVAL;
1153 return (-1);
1154 }
1155 }
1156 break;
1157 default:
1158 free(cmsgbuf);
1159 errno = EINVAL;
1160 return (-1);
1161 }
1162 if (i == 0) {
1163 msg.msg_name = addr;
1164 msg.msg_namelen = addr_len;
1165 }
1166 addr = (struct sockaddr *)((caddr_t)addr + addr_len);
1167 }
1168 if (msg.msg_controllen == 0) {
1169 msg.msg_control = NULL;
1170 }
1171 msg.msg_iov = (struct iovec *)iov;
1172 msg.msg_iovlen = iovcnt;
1173 msg.msg_flags = 0;
1174 ret = sendmsg(sd, &msg, flags);
1175 free(cmsgbuf);
1176 if ((ret >= 0) && (addrs != NULL) && (assoc_id != NULL)) {
1177 *assoc_id = sctp_getassocid(sd, addrs);
1178 }
1179 return (ret);
1180 }
1181
1182
1183 #if !defined(SYS_sctp_peeloff) && !defined(HAVE_SCTP_PEELOFF_SOCKOPT)
1184
1185 int
sctp_peeloff(int sd,sctp_assoc_t assoc_id)1186 sctp_peeloff(int sd, sctp_assoc_t assoc_id)
1187 {
1188 /* NOT supported, return invalid sd */
1189 errno = ENOTSUP;
1190 return (-1);
1191 }
1192
1193 #endif
1194 #if defined(SYS_sctp_peeloff) && !defined(HAVE_SCTP_PEELOFF_SOCKOPT)
1195 int
sctp_peeloff(int sd,sctp_assoc_t assoc_id)1196 sctp_peeloff(int sd, sctp_assoc_t assoc_id)
1197 {
1198 return (syscall(SYS_sctp_peeloff, sd, assoc_id));
1199 }
1200
1201 #endif
1202
1203 #undef SCTP_CONTROL_VEC_SIZE_RCV
1204