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(sctp_assoc_t));
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 + sizeof(sctp_assoc_t));
477 addrs = calloc(1, (size_t)opt_len);
478 if (addrs == NULL) {
479 errno = ENOMEM;
480 return (-1);
481 }
482 addrs->sget_assoc_id = id;
483 /* Now lets get the array of addresses */
484 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_LOCAL_ADDRESSES, addrs,
485 &opt_len) != 0) {
486 free(addrs);
487 errno = ENOMEM;
488 return (-1);
489 }
490 *raddrs = (struct sockaddr *)&addrs->addr[0];
491 cnt = 0;
492 sa = (struct sockaddr *)&addrs->addr[0];
493 lim = (caddr_t)addrs + opt_len;
494 while (((caddr_t)sa < lim) && (sa->sa_len > 0)) {
495 sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len);
496 cnt++;
497 }
498 return (cnt);
499 }
500
501 void
sctp_freeladdrs(struct sockaddr * addrs)502 sctp_freeladdrs(struct sockaddr *addrs)
503 {
504 void *fr_addr;
505
506 /* Take away the hidden association id */
507 fr_addr = (void *)((caddr_t)addrs - sizeof(sctp_assoc_t));
508 /* Now free it */
509 free(fr_addr);
510 }
511
512 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)513 sctp_sendmsg(int s,
514 const void *data,
515 size_t len,
516 const struct sockaddr *to,
517 socklen_t tolen,
518 uint32_t ppid,
519 uint32_t flags,
520 uint16_t stream_no,
521 uint32_t timetolive,
522 uint32_t context)
523 {
524 #ifdef SYS_sctp_generic_sendmsg
525 struct sctp_sndrcvinfo sinfo;
526
527 memset(&sinfo, 0, sizeof(struct sctp_sndrcvinfo));
528 sinfo.sinfo_ppid = ppid;
529 sinfo.sinfo_flags = flags;
530 sinfo.sinfo_stream = stream_no;
531 sinfo.sinfo_timetolive = timetolive;
532 sinfo.sinfo_context = context;
533 sinfo.sinfo_assoc_id = 0;
534 return (syscall(SYS_sctp_generic_sendmsg, s,
535 data, len, to, tolen, &sinfo, 0));
536 #else
537 struct msghdr msg;
538 struct sctp_sndrcvinfo *sinfo;
539 struct iovec iov;
540 char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))];
541 struct cmsghdr *cmsg;
542 struct sockaddr *who = NULL;
543 union {
544 struct sockaddr_in in;
545 struct sockaddr_in6 in6;
546 } addr;
547
548 if ((tolen > 0) &&
549 ((to == NULL) || (tolen < sizeof(struct sockaddr)))) {
550 errno = EINVAL;
551 return (-1);
552 }
553 if ((to != NULL) && (tolen > 0)) {
554 switch (to->sa_family) {
555 case AF_INET:
556 if (tolen != sizeof(struct sockaddr_in)) {
557 errno = EINVAL;
558 return (-1);
559 }
560 if ((to->sa_len > 0) &&
561 (to->sa_len != sizeof(struct sockaddr_in))) {
562 errno = EINVAL;
563 return (-1);
564 }
565 memcpy(&addr, to, sizeof(struct sockaddr_in));
566 addr.in.sin_len = sizeof(struct sockaddr_in);
567 break;
568 case AF_INET6:
569 if (tolen != sizeof(struct sockaddr_in6)) {
570 errno = EINVAL;
571 return (-1);
572 }
573 if ((to->sa_len > 0) &&
574 (to->sa_len != sizeof(struct sockaddr_in6))) {
575 errno = EINVAL;
576 return (-1);
577 }
578 memcpy(&addr, to, sizeof(struct sockaddr_in6));
579 addr.in6.sin6_len = sizeof(struct sockaddr_in6);
580 break;
581 default:
582 errno = EAFNOSUPPORT;
583 return (-1);
584 }
585 who = (struct sockaddr *)&addr;
586 }
587 iov.iov_base = (char *)data;
588 iov.iov_len = len;
589
590 if (who) {
591 msg.msg_name = (caddr_t)who;
592 msg.msg_namelen = who->sa_len;
593 } else {
594 msg.msg_name = (caddr_t)NULL;
595 msg.msg_namelen = 0;
596 }
597 msg.msg_iov = &iov;
598 msg.msg_iovlen = 1;
599 msg.msg_control = cmsgbuf;
600 msg.msg_controllen = CMSG_SPACE(sizeof(struct sctp_sndrcvinfo));
601 msg.msg_flags = 0;
602 cmsg = (struct cmsghdr *)cmsgbuf;
603 cmsg->cmsg_level = IPPROTO_SCTP;
604 cmsg->cmsg_type = SCTP_SNDRCV;
605 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo));
606 sinfo = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg);
607 memset(sinfo, 0, sizeof(struct sctp_sndrcvinfo));
608 sinfo->sinfo_stream = stream_no;
609 sinfo->sinfo_ssn = 0;
610 sinfo->sinfo_flags = flags;
611 sinfo->sinfo_ppid = ppid;
612 sinfo->sinfo_context = context;
613 sinfo->sinfo_assoc_id = 0;
614 sinfo->sinfo_timetolive = timetolive;
615 return (sendmsg(s, &msg, 0));
616 #endif
617 }
618
619
620 sctp_assoc_t
sctp_getassocid(int sd,struct sockaddr * sa)621 sctp_getassocid(int sd, struct sockaddr *sa)
622 {
623 struct sctp_paddrinfo sp;
624 socklen_t siz;
625
626 /* First get the assoc id */
627 siz = sizeof(sp);
628 memset(&sp, 0, sizeof(sp));
629 memcpy((caddr_t)&sp.spinfo_address, sa, sa->sa_len);
630 if (getsockopt(sd, IPPROTO_SCTP,
631 SCTP_GET_PEER_ADDR_INFO, &sp, &siz) != 0) {
632 /* We depend on the fact that 0 can never be returned */
633 return ((sctp_assoc_t) 0);
634 }
635 return (sp.spinfo_assoc_id);
636 }
637
638 ssize_t
sctp_send(int sd,const void * data,size_t len,const struct sctp_sndrcvinfo * sinfo,int flags)639 sctp_send(int sd, const void *data, size_t len,
640 const struct sctp_sndrcvinfo *sinfo,
641 int flags)
642 {
643
644 #ifdef SYS_sctp_generic_sendmsg
645 struct sockaddr *to = NULL;
646
647 return (syscall(SYS_sctp_generic_sendmsg, sd,
648 data, len, to, 0, sinfo, flags));
649 #else
650 struct msghdr msg;
651 struct iovec iov;
652 char cmsgbuf[CMSG_SPACE(sizeof(struct sctp_sndrcvinfo))];
653 struct cmsghdr *cmsg;
654
655 if (sinfo == NULL) {
656 errno = EINVAL;
657 return (-1);
658 }
659 iov.iov_base = (char *)data;
660 iov.iov_len = len;
661
662 msg.msg_name = NULL;
663 msg.msg_namelen = 0;
664 msg.msg_iov = &iov;
665 msg.msg_iovlen = 1;
666 msg.msg_control = cmsgbuf;
667 msg.msg_controllen = CMSG_SPACE(sizeof(struct sctp_sndrcvinfo));
668 msg.msg_flags = 0;
669 cmsg = (struct cmsghdr *)cmsgbuf;
670 cmsg->cmsg_level = IPPROTO_SCTP;
671 cmsg->cmsg_type = SCTP_SNDRCV;
672 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo));
673 memcpy(CMSG_DATA(cmsg), sinfo, sizeof(struct sctp_sndrcvinfo));
674 return (sendmsg(sd, &msg, flags));
675 #endif
676 }
677
678
679
680 ssize_t
sctp_sendx(int sd,const void * msg,size_t msg_len,struct sockaddr * addrs,int addrcnt,struct sctp_sndrcvinfo * sinfo,int flags)681 sctp_sendx(int sd, const void *msg, size_t msg_len,
682 struct sockaddr *addrs, int addrcnt,
683 struct sctp_sndrcvinfo *sinfo,
684 int flags)
685 {
686 struct sctp_sndrcvinfo __sinfo;
687 ssize_t ret;
688 int i, cnt, *aa, saved_errno;
689 char *buf;
690 int no_end_cx = 0;
691 size_t len, add_len;
692 struct sockaddr *at;
693
694 if (addrs == NULL) {
695 errno = EINVAL;
696 return (-1);
697 }
698 #ifdef SYS_sctp_generic_sendmsg
699 if (addrcnt == 1) {
700 socklen_t l;
701 ssize_t ret;
702
703 /*
704 * Quick way, we don't need to do a connectx so lets use the
705 * syscall directly.
706 */
707 l = addrs->sa_len;
708 ret = syscall(SYS_sctp_generic_sendmsg, sd,
709 msg, msg_len, addrs, l, sinfo, flags);
710 if ((ret >= 0) && (sinfo != NULL)) {
711 sinfo->sinfo_assoc_id = sctp_getassocid(sd, addrs);
712 }
713 return (ret);
714 }
715 #endif
716
717 len = sizeof(int);
718 at = addrs;
719 cnt = 0;
720 /* validate all the addresses and get the size */
721 for (i = 0; i < addrcnt; i++) {
722 if (at->sa_family == AF_INET) {
723 add_len = sizeof(struct sockaddr_in);
724 } else if (at->sa_family == AF_INET6) {
725 add_len = sizeof(struct sockaddr_in6);
726 } else {
727 errno = EINVAL;
728 return (-1);
729 }
730 len += add_len;
731 at = (struct sockaddr *)((caddr_t)at + add_len);
732 cnt++;
733 }
734 /* do we have any? */
735 if (cnt == 0) {
736 errno = EINVAL;
737 return (-1);
738 }
739 buf = malloc(len);
740 if (buf == NULL) {
741 errno = ENOMEM;
742 return (-1);
743 }
744 aa = (int *)buf;
745 *aa = cnt;
746 aa++;
747 memcpy((caddr_t)aa, addrs, (size_t)(len - sizeof(int)));
748 ret = setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_DELAYED, (void *)buf,
749 (socklen_t) len);
750
751 free(buf);
752 if (ret != 0) {
753 if (errno == EALREADY) {
754 no_end_cx = 1;
755 goto continue_send;
756 }
757 return (ret);
758 }
759 continue_send:
760 if (sinfo == NULL) {
761 sinfo = &__sinfo;
762 memset(&__sinfo, 0, sizeof(__sinfo));
763 }
764 sinfo->sinfo_assoc_id = sctp_getassocid(sd, addrs);
765 if (sinfo->sinfo_assoc_id == 0) {
766 (void)setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_COMPLETE, (void *)addrs,
767 (socklen_t) addrs->sa_len);
768 errno = ENOENT;
769 return (-1);
770 }
771 ret = sctp_send(sd, msg, msg_len, sinfo, flags);
772 saved_errno = errno;
773 if (no_end_cx == 0)
774 (void)setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_COMPLETE, (void *)addrs,
775 (socklen_t) addrs->sa_len);
776
777 errno = saved_errno;
778 return (ret);
779 }
780
781 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)782 sctp_sendmsgx(int sd,
783 const void *msg,
784 size_t len,
785 struct sockaddr *addrs,
786 int addrcnt,
787 uint32_t ppid,
788 uint32_t flags,
789 uint16_t stream_no,
790 uint32_t timetolive,
791 uint32_t context)
792 {
793 struct sctp_sndrcvinfo sinfo;
794
795 memset((void *)&sinfo, 0, sizeof(struct sctp_sndrcvinfo));
796 sinfo.sinfo_ppid = ppid;
797 sinfo.sinfo_flags = flags;
798 sinfo.sinfo_stream = stream_no;
799 sinfo.sinfo_timetolive = timetolive;
800 sinfo.sinfo_context = context;
801 return (sctp_sendx(sd, msg, len, addrs, addrcnt, &sinfo, 0));
802 }
803
804 ssize_t
sctp_recvmsg(int s,void * dbuf,size_t len,struct sockaddr * from,socklen_t * fromlen,struct sctp_sndrcvinfo * sinfo,int * msg_flags)805 sctp_recvmsg(int s,
806 void *dbuf,
807 size_t len,
808 struct sockaddr *from,
809 socklen_t * fromlen,
810 struct sctp_sndrcvinfo *sinfo,
811 int *msg_flags)
812 {
813 #ifdef SYS_sctp_generic_recvmsg
814 struct iovec iov;
815
816 iov.iov_base = dbuf;
817 iov.iov_len = len;
818 return (syscall(SYS_sctp_generic_recvmsg, s,
819 &iov, 1, from, fromlen, sinfo, msg_flags));
820 #else
821 ssize_t sz;
822 struct msghdr msg;
823 struct iovec iov;
824 char cmsgbuf[SCTP_CONTROL_VEC_SIZE_RCV];
825 struct cmsghdr *cmsg;
826
827 if (msg_flags == NULL) {
828 errno = EINVAL;
829 return (-1);
830 }
831 iov.iov_base = dbuf;
832 iov.iov_len = len;
833 msg.msg_name = (caddr_t)from;
834 if (fromlen == NULL)
835 msg.msg_namelen = 0;
836 else
837 msg.msg_namelen = *fromlen;
838 msg.msg_iov = &iov;
839 msg.msg_iovlen = 1;
840 msg.msg_control = cmsgbuf;
841 msg.msg_controllen = sizeof(cmsgbuf);
842 msg.msg_flags = 0;
843 sz = recvmsg(s, &msg, *msg_flags);
844 *msg_flags = msg.msg_flags;
845 if (sz <= 0) {
846 return (sz);
847 }
848 if (sinfo) {
849 sinfo->sinfo_assoc_id = 0;
850 }
851 if ((msg.msg_controllen > 0) && (sinfo != NULL)) {
852 /*
853 * parse through and see if we find the sctp_sndrcvinfo (if
854 * the user wants it).
855 */
856 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) {
857 if (cmsg->cmsg_level != IPPROTO_SCTP) {
858 continue;
859 }
860 if (cmsg->cmsg_type == SCTP_SNDRCV) {
861 memcpy(sinfo, CMSG_DATA(cmsg), sizeof(struct sctp_sndrcvinfo));
862 break;
863 }
864 if (cmsg->cmsg_type == SCTP_EXTRCV) {
865 /*
866 * Let's hope that the user provided enough
867 * enough memory. At least he asked for more
868 * information.
869 */
870 memcpy(sinfo, CMSG_DATA(cmsg), sizeof(struct sctp_extrcvinfo));
871 break;
872 }
873 }
874 }
875 return (sz);
876 #endif
877 }
878
879 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)880 sctp_recvv(int sd,
881 const struct iovec *iov,
882 int iovlen,
883 struct sockaddr *from,
884 socklen_t * fromlen,
885 void *info,
886 socklen_t * infolen,
887 unsigned int *infotype,
888 int *flags)
889 {
890 char cmsgbuf[SCTP_CONTROL_VEC_SIZE_RCV];
891 struct msghdr msg;
892 struct cmsghdr *cmsg;
893 ssize_t ret;
894 struct sctp_rcvinfo *rcvinfo;
895 struct sctp_nxtinfo *nxtinfo;
896
897 if (((info != NULL) && (infolen == NULL)) ||
898 ((info == NULL) && (infolen != NULL) && (*infolen != 0)) ||
899 ((info != NULL) && (infotype == NULL))) {
900 errno = EINVAL;
901 return (-1);
902 }
903 if (infotype) {
904 *infotype = SCTP_RECVV_NOINFO;
905 }
906 msg.msg_name = from;
907 if (fromlen == NULL) {
908 msg.msg_namelen = 0;
909 } else {
910 msg.msg_namelen = *fromlen;
911 }
912 msg.msg_iov = (struct iovec *)iov;
913 msg.msg_iovlen = iovlen;
914 msg.msg_control = cmsgbuf;
915 msg.msg_controllen = sizeof(cmsgbuf);
916 msg.msg_flags = 0;
917 ret = recvmsg(sd, &msg, *flags);
918 *flags = msg.msg_flags;
919 if ((ret > 0) &&
920 (msg.msg_controllen > 0) &&
921 (infotype != NULL) &&
922 (infolen != NULL) &&
923 (*infolen > 0)) {
924 rcvinfo = NULL;
925 nxtinfo = NULL;
926 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) {
927 if (cmsg->cmsg_level != IPPROTO_SCTP) {
928 continue;
929 }
930 if (cmsg->cmsg_type == SCTP_RCVINFO) {
931 rcvinfo = (struct sctp_rcvinfo *)CMSG_DATA(cmsg);
932 if (nxtinfo != NULL) {
933 break;
934 } else {
935 continue;
936 }
937 }
938 if (cmsg->cmsg_type == SCTP_NXTINFO) {
939 nxtinfo = (struct sctp_nxtinfo *)CMSG_DATA(cmsg);
940 if (rcvinfo != NULL) {
941 break;
942 } else {
943 continue;
944 }
945 }
946 }
947 if (rcvinfo != NULL) {
948 if ((nxtinfo != NULL) && (*infolen >= sizeof(struct sctp_recvv_rn))) {
949 struct sctp_recvv_rn *rn_info;
950
951 rn_info = (struct sctp_recvv_rn *)info;
952 rn_info->recvv_rcvinfo = *rcvinfo;
953 rn_info->recvv_nxtinfo = *nxtinfo;
954 *infolen = (socklen_t) sizeof(struct sctp_recvv_rn);
955 *infotype = SCTP_RECVV_RN;
956 } else if (*infolen >= sizeof(struct sctp_rcvinfo)) {
957 memcpy(info, rcvinfo, sizeof(struct sctp_rcvinfo));
958 *infolen = (socklen_t) sizeof(struct sctp_rcvinfo);
959 *infotype = SCTP_RECVV_RCVINFO;
960 }
961 } else if (nxtinfo != NULL) {
962 if (*infolen >= sizeof(struct sctp_nxtinfo)) {
963 memcpy(info, nxtinfo, sizeof(struct sctp_nxtinfo));
964 *infolen = (socklen_t) sizeof(struct sctp_nxtinfo);
965 *infotype = SCTP_RECVV_NXTINFO;
966 }
967 }
968 }
969 return (ret);
970 }
971
972 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)973 sctp_sendv(int sd,
974 const struct iovec *iov, int iovcnt,
975 struct sockaddr *addrs, int addrcnt,
976 void *info, socklen_t infolen, unsigned int infotype,
977 int flags)
978 {
979 ssize_t ret;
980 int i;
981 socklen_t addr_len;
982 struct msghdr msg;
983 in_port_t port;
984 struct sctp_sendv_spa *spa_info;
985 struct cmsghdr *cmsg;
986 char *cmsgbuf;
987 struct sockaddr *addr;
988 struct sockaddr_in *addr_in;
989 struct sockaddr_in6 *addr_in6;
990 sctp_assoc_t *assoc_id;
991
992 if ((addrcnt < 0) ||
993 (iovcnt < 0) ||
994 ((addrs == NULL) && (addrcnt > 0)) ||
995 ((addrs != NULL) && (addrcnt == 0)) ||
996 ((iov == NULL) && (iovcnt > 0)) ||
997 ((iov != NULL) && (iovcnt == 0))) {
998 errno = EINVAL;
999 return (-1);
1000 }
1001 cmsgbuf = malloc(CMSG_SPACE(sizeof(struct sctp_sndinfo)) +
1002 CMSG_SPACE(sizeof(struct sctp_prinfo)) +
1003 CMSG_SPACE(sizeof(struct sctp_authinfo)) +
1004 (size_t)addrcnt * CMSG_SPACE(sizeof(struct in6_addr)));
1005 if (cmsgbuf == NULL) {
1006 errno = ENOMEM;
1007 return (-1);
1008 }
1009 assoc_id = NULL;
1010 msg.msg_control = cmsgbuf;
1011 msg.msg_controllen = 0;
1012 cmsg = (struct cmsghdr *)cmsgbuf;
1013 switch (infotype) {
1014 case SCTP_SENDV_NOINFO:
1015 if ((infolen != 0) || (info != NULL)) {
1016 free(cmsgbuf);
1017 errno = EINVAL;
1018 return (-1);
1019 }
1020 break;
1021 case SCTP_SENDV_SNDINFO:
1022 if ((info == NULL) || (infolen < sizeof(struct sctp_sndinfo))) {
1023 free(cmsgbuf);
1024 errno = EINVAL;
1025 return (-1);
1026 }
1027 cmsg->cmsg_level = IPPROTO_SCTP;
1028 cmsg->cmsg_type = SCTP_SNDINFO;
1029 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndinfo));
1030 memcpy(CMSG_DATA(cmsg), info, sizeof(struct sctp_sndinfo));
1031 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndinfo));
1032 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_sndinfo)));
1033 assoc_id = &(((struct sctp_sndinfo *)info)->snd_assoc_id);
1034 break;
1035 case SCTP_SENDV_PRINFO:
1036 if ((info == NULL) || (infolen < sizeof(struct sctp_prinfo))) {
1037 free(cmsgbuf);
1038 errno = EINVAL;
1039 return (-1);
1040 }
1041 cmsg->cmsg_level = IPPROTO_SCTP;
1042 cmsg->cmsg_type = SCTP_PRINFO;
1043 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_prinfo));
1044 memcpy(CMSG_DATA(cmsg), info, sizeof(struct sctp_prinfo));
1045 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_prinfo));
1046 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_prinfo)));
1047 break;
1048 case SCTP_SENDV_AUTHINFO:
1049 if ((info == NULL) || (infolen < sizeof(struct sctp_authinfo))) {
1050 free(cmsgbuf);
1051 errno = EINVAL;
1052 return (-1);
1053 }
1054 cmsg->cmsg_level = IPPROTO_SCTP;
1055 cmsg->cmsg_type = SCTP_AUTHINFO;
1056 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_authinfo));
1057 memcpy(CMSG_DATA(cmsg), info, sizeof(struct sctp_authinfo));
1058 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_authinfo));
1059 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_authinfo)));
1060 break;
1061 case SCTP_SENDV_SPA:
1062 if ((info == NULL) || (infolen < sizeof(struct sctp_sendv_spa))) {
1063 free(cmsgbuf);
1064 errno = EINVAL;
1065 return (-1);
1066 }
1067 spa_info = (struct sctp_sendv_spa *)info;
1068 if (spa_info->sendv_flags & SCTP_SEND_SNDINFO_VALID) {
1069 cmsg->cmsg_level = IPPROTO_SCTP;
1070 cmsg->cmsg_type = SCTP_SNDINFO;
1071 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndinfo));
1072 memcpy(CMSG_DATA(cmsg), &spa_info->sendv_sndinfo, sizeof(struct sctp_sndinfo));
1073 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndinfo));
1074 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_sndinfo)));
1075 assoc_id = &(spa_info->sendv_sndinfo.snd_assoc_id);
1076 }
1077 if (spa_info->sendv_flags & SCTP_SEND_PRINFO_VALID) {
1078 cmsg->cmsg_level = IPPROTO_SCTP;
1079 cmsg->cmsg_type = SCTP_PRINFO;
1080 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_prinfo));
1081 memcpy(CMSG_DATA(cmsg), &spa_info->sendv_prinfo, sizeof(struct sctp_prinfo));
1082 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_prinfo));
1083 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_prinfo)));
1084 }
1085 if (spa_info->sendv_flags & SCTP_SEND_AUTHINFO_VALID) {
1086 cmsg->cmsg_level = IPPROTO_SCTP;
1087 cmsg->cmsg_type = SCTP_AUTHINFO;
1088 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_authinfo));
1089 memcpy(CMSG_DATA(cmsg), &spa_info->sendv_authinfo, sizeof(struct sctp_authinfo));
1090 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_authinfo));
1091 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_authinfo)));
1092 }
1093 break;
1094 default:
1095 free(cmsgbuf);
1096 errno = EINVAL;
1097 return (-1);
1098 }
1099 addr = addrs;
1100 msg.msg_name = NULL;
1101 msg.msg_namelen = 0;
1102
1103 for (i = 0; i < addrcnt; i++) {
1104 switch (addr->sa_family) {
1105 case AF_INET:
1106 addr_len = (socklen_t) sizeof(struct sockaddr_in);
1107 addr_in = (struct sockaddr_in *)addr;
1108 if (addr_in->sin_len != addr_len) {
1109 free(cmsgbuf);
1110 errno = EINVAL;
1111 return (-1);
1112 }
1113 if (i == 0) {
1114 port = addr_in->sin_port;
1115 } else {
1116 if (port == addr_in->sin_port) {
1117 cmsg->cmsg_level = IPPROTO_SCTP;
1118 cmsg->cmsg_type = SCTP_DSTADDRV4;
1119 cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_addr));
1120 memcpy(CMSG_DATA(cmsg), &addr_in->sin_addr, sizeof(struct in_addr));
1121 msg.msg_controllen += CMSG_SPACE(sizeof(struct in_addr));
1122 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct in_addr)));
1123 } else {
1124 free(cmsgbuf);
1125 errno = EINVAL;
1126 return (-1);
1127 }
1128 }
1129 break;
1130 case AF_INET6:
1131 addr_len = (socklen_t) sizeof(struct sockaddr_in6);
1132 addr_in6 = (struct sockaddr_in6 *)addr;
1133 if (addr_in6->sin6_len != addr_len) {
1134 free(cmsgbuf);
1135 errno = EINVAL;
1136 return (-1);
1137 }
1138 if (i == 0) {
1139 port = addr_in6->sin6_port;
1140 } else {
1141 if (port == addr_in6->sin6_port) {
1142 cmsg->cmsg_level = IPPROTO_SCTP;
1143 cmsg->cmsg_type = SCTP_DSTADDRV6;
1144 cmsg->cmsg_len = CMSG_LEN(sizeof(struct in6_addr));
1145 memcpy(CMSG_DATA(cmsg), &addr_in6->sin6_addr, sizeof(struct in6_addr));
1146 msg.msg_controllen += CMSG_SPACE(sizeof(struct in6_addr));
1147 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct in6_addr)));
1148 } else {
1149 free(cmsgbuf);
1150 errno = EINVAL;
1151 return (-1);
1152 }
1153 }
1154 break;
1155 default:
1156 free(cmsgbuf);
1157 errno = EINVAL;
1158 return (-1);
1159 }
1160 if (i == 0) {
1161 msg.msg_name = addr;
1162 msg.msg_namelen = addr_len;
1163 }
1164 addr = (struct sockaddr *)((caddr_t)addr + addr_len);
1165 }
1166 if (msg.msg_controllen == 0) {
1167 msg.msg_control = NULL;
1168 }
1169 msg.msg_iov = (struct iovec *)iov;
1170 msg.msg_iovlen = iovcnt;
1171 msg.msg_flags = 0;
1172 ret = sendmsg(sd, &msg, flags);
1173 free(cmsgbuf);
1174 if ((ret >= 0) && (addrs != NULL) && (assoc_id != NULL)) {
1175 *assoc_id = sctp_getassocid(sd, addrs);
1176 }
1177 return (ret);
1178 }
1179
1180
1181 #if !defined(SYS_sctp_peeloff) && !defined(HAVE_SCTP_PEELOFF_SOCKOPT)
1182
1183 int
sctp_peeloff(int sd,sctp_assoc_t assoc_id)1184 sctp_peeloff(int sd, sctp_assoc_t assoc_id)
1185 {
1186 /* NOT supported, return invalid sd */
1187 errno = ENOTSUP;
1188 return (-1);
1189 }
1190
1191 #endif
1192 #if defined(SYS_sctp_peeloff) && !defined(HAVE_SCTP_PEELOFF_SOCKOPT)
1193 int
sctp_peeloff(int sd,sctp_assoc_t assoc_id)1194 sctp_peeloff(int sd, sctp_assoc_t assoc_id)
1195 {
1196 return (syscall(SYS_sctp_peeloff, sd, assoc_id));
1197 }
1198
1199 #endif
1200
1201 #undef SCTP_CONTROL_VEC_SIZE_RCV
1202