1 /*- 2 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. 3 * Copyright (c) 2008-2011, by Randall Stewart. All rights reserved. 4 * Copyright (c) 2008-2011, 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 #include <stdio.h> 36 #include <string.h> 37 #include <errno.h> 38 #include <stdlib.h> 39 #include <unistd.h> 40 #include <sys/types.h> 41 #include <sys/socket.h> 42 #include <sys/errno.h> 43 #include <sys/syscall.h> 44 #include <sys/uio.h> 45 #include <netinet/in.h> 46 #include <arpa/inet.h> 47 #include <netinet/sctp_uio.h> 48 #include <netinet/sctp.h> 49 50 #include <net/if_dl.h> 51 52 #ifndef IN6_IS_ADDR_V4MAPPED 53 #define IN6_IS_ADDR_V4MAPPED(a) \ 54 ((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \ 55 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \ 56 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff))) 57 #endif 58 59 60 #define SCTP_CONTROL_VEC_SIZE_SND 8192 61 #define SCTP_CONTROL_VEC_SIZE_RCV 16384 62 #define SCTP_STACK_BUF_SIZE 2048 63 64 #ifdef SCTP_DEBUG_PRINT_ADDRESS 65 66 #define SCTP_STRING_BUF_SZ 256 67 68 static void 69 SCTPPrintAnAddress(struct sockaddr *a) 70 { 71 char stringToPrint[SCTP_STRING_BUF_SZ]; 72 u_short prt; 73 char *srcaddr, *txt; 74 75 if (a == NULL) { 76 printf("NULL\n"); 77 return; 78 } 79 if (a->sa_family == AF_INET) { 80 srcaddr = (char *)&((struct sockaddr_in *)a)->sin_addr; 81 txt = "IPv4 Address: "; 82 prt = ntohs(((struct sockaddr_in *)a)->sin_port); 83 } else if (a->sa_family == AF_INET6) { 84 srcaddr = (char *)&((struct sockaddr_in6 *)a)->sin6_addr; 85 prt = ntohs(((struct sockaddr_in6 *)a)->sin6_port); 86 txt = "IPv6 Address: "; 87 } else if (a->sa_family == AF_LINK) { 88 int i; 89 char tbuf[SCTP_STRING_BUF_SZ]; 90 u_char adbuf[SCTP_STRING_BUF_SZ]; 91 struct sockaddr_dl *dl; 92 93 dl = (struct sockaddr_dl *)a; 94 strncpy(tbuf, dl->sdl_data, dl->sdl_nlen); 95 tbuf[dl->sdl_nlen] = 0; 96 printf("Intf:%s (len:%d)Interface index:%d type:%x(%d) ll-len:%d ", 97 tbuf, 98 dl->sdl_nlen, 99 dl->sdl_index, 100 dl->sdl_type, 101 dl->sdl_type, 102 dl->sdl_alen 103 ); 104 memcpy(adbuf, LLADDR(dl), dl->sdl_alen); 105 for (i = 0; i < dl->sdl_alen; i++) { 106 printf("%2.2x", adbuf[i]); 107 if (i < (dl->sdl_alen - 1)) 108 printf(":"); 109 } 110 printf("\n"); 111 return; 112 } else { 113 return; 114 } 115 if (inet_ntop(a->sa_family, srcaddr, stringToPrint, sizeof(stringToPrint))) { 116 if (a->sa_family == AF_INET6) { 117 printf("%s%s:%d scope:%d\n", 118 txt, stringToPrint, prt, 119 ((struct sockaddr_in6 *)a)->sin6_scope_id); 120 } else { 121 printf("%s%s:%d\n", txt, stringToPrint, prt); 122 } 123 124 } else { 125 printf("%s unprintable?\n", txt); 126 } 127 } 128 129 #endif /* SCTP_DEBUG_PRINT_ADDRESS */ 130 131 static void 132 in6_sin6_2_sin(struct sockaddr_in *sin, struct sockaddr_in6 *sin6) 133 { 134 bzero(sin, sizeof(*sin)); 135 sin->sin_len = sizeof(struct sockaddr_in); 136 sin->sin_family = AF_INET; 137 sin->sin_port = sin6->sin6_port; 138 sin->sin_addr.s_addr = sin6->sin6_addr.__u6_addr.__u6_addr32[3]; 139 } 140 141 int 142 sctp_getaddrlen(sa_family_t family) 143 { 144 int ret, sd; 145 socklen_t siz; 146 struct sctp_assoc_value av; 147 148 av.assoc_value = family; 149 siz = sizeof(av); 150 #if defined(AF_INET) 151 sd = socket(AF_INET, SOCK_SEQPACKET, IPPROTO_SCTP); 152 #elif defined(AF_INET6) 153 sd = socket(AF_INET6, SOCK_SEQPACKET, IPPROTO_SCTP); 154 #else 155 sd = -1; 156 #endif 157 if (sd == -1) { 158 return (-1); 159 } 160 ret = getsockopt(sd, IPPROTO_SCTP, SCTP_GET_ADDR_LEN, &av, &siz); 161 close(sd); 162 if (ret == 0) { 163 return ((int)av.assoc_value); 164 } else { 165 return (-1); 166 } 167 } 168 169 int 170 sctp_connectx(int sd, const struct sockaddr *addrs, int addrcnt, 171 sctp_assoc_t * id) 172 { 173 char buf[SCTP_STACK_BUF_SIZE]; 174 int i, ret, cnt, *aa; 175 char *cpto; 176 const struct sockaddr *at; 177 sctp_assoc_t *p_id; 178 size_t len = sizeof(int); 179 180 /* validate the address count and list */ 181 if ((addrs == NULL) || (addrcnt <= 0)) { 182 errno = EINVAL; 183 return (-1); 184 } 185 at = addrs; 186 cnt = 0; 187 cpto = ((caddr_t)buf + sizeof(int)); 188 /* validate all the addresses and get the size */ 189 for (i = 0; i < addrcnt; i++) { 190 if (at->sa_family == AF_INET) { 191 if (at->sa_len != sizeof(struct sockaddr_in)) { 192 errno = EINVAL; 193 return (-1); 194 } 195 memcpy(cpto, at, at->sa_len); 196 cpto = ((caddr_t)cpto + at->sa_len); 197 len += at->sa_len; 198 } else if (at->sa_family == AF_INET6) { 199 if (at->sa_len != sizeof(struct sockaddr_in6)) { 200 errno = EINVAL; 201 return (-1); 202 } 203 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)at)->sin6_addr)) { 204 len += sizeof(struct sockaddr_in); 205 in6_sin6_2_sin((struct sockaddr_in *)cpto, (struct sockaddr_in6 *)at); 206 cpto = ((caddr_t)cpto + sizeof(struct sockaddr_in)); 207 len += sizeof(struct sockaddr_in); 208 } else { 209 memcpy(cpto, at, at->sa_len); 210 cpto = ((caddr_t)cpto + at->sa_len); 211 len += at->sa_len; 212 } 213 } else { 214 errno = EINVAL; 215 return (-1); 216 } 217 if (len > (sizeof(buf) - sizeof(int))) { 218 /* Never enough memory */ 219 errno = E2BIG; 220 return (-1); 221 } 222 at = (struct sockaddr *)((caddr_t)at + at->sa_len); 223 cnt++; 224 } 225 /* do we have any? */ 226 if (cnt == 0) { 227 errno = EINVAL; 228 return (-1); 229 } 230 aa = (int *)buf; 231 *aa = cnt; 232 ret = setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X, (void *)buf, 233 (socklen_t) len); 234 if ((ret == 0) && id) { 235 p_id = (sctp_assoc_t *) buf; 236 *id = *p_id; 237 } 238 return (ret); 239 } 240 241 int 242 sctp_bindx(int sd, struct sockaddr *addrs, int addrcnt, int flags) 243 { 244 struct sctp_getaddresses *gaddrs; 245 struct sockaddr *sa; 246 struct sockaddr_in *sin; 247 struct sockaddr_in6 *sin6; 248 int i, sz, argsz; 249 uint16_t sport = 0; 250 251 /* validate the flags */ 252 if ((flags != SCTP_BINDX_ADD_ADDR) && 253 (flags != SCTP_BINDX_REM_ADDR)) { 254 errno = EFAULT; 255 return (-1); 256 } 257 /* validate the address count and list */ 258 if ((addrcnt <= 0) || (addrs == NULL)) { 259 errno = EINVAL; 260 return (-1); 261 } 262 argsz = (sizeof(struct sockaddr_storage) + 263 sizeof(struct sctp_getaddresses)); 264 gaddrs = (struct sctp_getaddresses *)calloc(1, argsz); 265 if (gaddrs == NULL) { 266 errno = ENOMEM; 267 return (-1); 268 } 269 /* First pre-screen the addresses */ 270 sa = addrs; 271 for (i = 0; i < addrcnt; i++) { 272 sz = sa->sa_len; 273 if (sa->sa_family == AF_INET) { 274 if (sa->sa_len != sizeof(struct sockaddr_in)) 275 goto out_error; 276 sin = (struct sockaddr_in *)sa; 277 if (sin->sin_port) { 278 /* non-zero port, check or save */ 279 if (sport) { 280 /* Check against our port */ 281 if (sport != sin->sin_port) { 282 goto out_error; 283 } 284 } else { 285 /* save off the port */ 286 sport = sin->sin_port; 287 } 288 } 289 } else if (sa->sa_family == AF_INET6) { 290 if (sa->sa_len != sizeof(struct sockaddr_in6)) 291 goto out_error; 292 sin6 = (struct sockaddr_in6 *)sa; 293 if (sin6->sin6_port) { 294 /* non-zero port, check or save */ 295 if (sport) { 296 /* Check against our port */ 297 if (sport != sin6->sin6_port) { 298 goto out_error; 299 } 300 } else { 301 /* save off the port */ 302 sport = sin6->sin6_port; 303 } 304 } 305 } else { 306 /* invalid address family specified */ 307 goto out_error; 308 } 309 310 sa = (struct sockaddr *)((caddr_t)sa + sz); 311 } 312 sa = addrs; 313 /* 314 * Now if there was a port mentioned, assure that the first address 315 * has that port to make sure it fails or succeeds correctly. 316 */ 317 if (sport) { 318 sin = (struct sockaddr_in *)sa; 319 sin->sin_port = sport; 320 } 321 for (i = 0; i < addrcnt; i++) { 322 sz = sa->sa_len; 323 if (sa->sa_family == AF_INET) { 324 if (sa->sa_len != sizeof(struct sockaddr_in)) 325 goto out_error; 326 } else if (sa->sa_family == AF_INET6) { 327 if (sa->sa_len != sizeof(struct sockaddr_in6)) 328 goto out_error; 329 } else { 330 /* invalid address family specified */ 331 out_error: 332 free(gaddrs); 333 errno = EINVAL; 334 return (-1); 335 } 336 memset(gaddrs, 0, argsz); 337 gaddrs->sget_assoc_id = 0; 338 memcpy(gaddrs->addr, sa, sz); 339 if (setsockopt(sd, IPPROTO_SCTP, flags, gaddrs, 340 (socklen_t) argsz) != 0) { 341 free(gaddrs); 342 return (-1); 343 } 344 sa = (struct sockaddr *)((caddr_t)sa + sz); 345 } 346 free(gaddrs); 347 return (0); 348 } 349 350 351 int 352 sctp_opt_info(int sd, sctp_assoc_t id, int opt, void *arg, socklen_t * size) 353 { 354 if (arg == NULL) { 355 errno = EINVAL; 356 return (-1); 357 } 358 switch (opt) { 359 case SCTP_RTOINFO: 360 ((struct sctp_rtoinfo *)arg)->srto_assoc_id = id; 361 break; 362 case SCTP_ASSOCINFO: 363 ((struct sctp_assocparams *)arg)->sasoc_assoc_id = id; 364 break; 365 case SCTP_DEFAULT_SEND_PARAM: 366 ((struct sctp_assocparams *)arg)->sasoc_assoc_id = id; 367 break; 368 case SCTP_PRIMARY_ADDR: 369 ((struct sctp_setprim *)arg)->ssp_assoc_id = id; 370 break; 371 case SCTP_PEER_ADDR_PARAMS: 372 ((struct sctp_paddrparams *)arg)->spp_assoc_id = id; 373 break; 374 case SCTP_MAXSEG: 375 ((struct sctp_assoc_value *)arg)->assoc_id = id; 376 break; 377 case SCTP_AUTH_KEY: 378 ((struct sctp_authkey *)arg)->sca_assoc_id = id; 379 break; 380 case SCTP_AUTH_ACTIVE_KEY: 381 ((struct sctp_authkeyid *)arg)->scact_assoc_id = id; 382 break; 383 case SCTP_DELAYED_SACK: 384 ((struct sctp_sack_info *)arg)->sack_assoc_id = id; 385 break; 386 case SCTP_CONTEXT: 387 ((struct sctp_assoc_value *)arg)->assoc_id = id; 388 break; 389 case SCTP_STATUS: 390 ((struct sctp_status *)arg)->sstat_assoc_id = id; 391 break; 392 case SCTP_GET_PEER_ADDR_INFO: 393 ((struct sctp_paddrinfo *)arg)->spinfo_assoc_id = id; 394 break; 395 case SCTP_PEER_AUTH_CHUNKS: 396 ((struct sctp_authchunks *)arg)->gauth_assoc_id = id; 397 break; 398 case SCTP_LOCAL_AUTH_CHUNKS: 399 ((struct sctp_authchunks *)arg)->gauth_assoc_id = id; 400 break; 401 case SCTP_TIMEOUTS: 402 ((struct sctp_timeouts *)arg)->stimo_assoc_id = id; 403 break; 404 case SCTP_EVENT: 405 ((struct sctp_event *)arg)->se_assoc_id = id; 406 break; 407 case SCTP_DEFAULT_SNDINFO: 408 ((struct sctp_sndinfo *)arg)->snd_assoc_id = id; 409 break; 410 case SCTP_DEFAULT_PRINFO: 411 ((struct sctp_default_prinfo *)arg)->pr_assoc_id = id; 412 break; 413 case SCTP_PEER_ADDR_THLDS: 414 ((struct sctp_paddrthlds *)arg)->spt_assoc_id = id; 415 break; 416 case SCTP_MAX_BURST: 417 ((struct sctp_assoc_value *)arg)->assoc_id = id; 418 break; 419 default: 420 break; 421 } 422 return (getsockopt(sd, IPPROTO_SCTP, opt, arg, size)); 423 } 424 425 int 426 sctp_getpaddrs(int sd, sctp_assoc_t id, struct sockaddr **raddrs) 427 { 428 struct sctp_getaddresses *addrs; 429 struct sockaddr *sa; 430 struct sockaddr *re; 431 sctp_assoc_t asoc; 432 caddr_t lim; 433 socklen_t siz; 434 int cnt; 435 436 if (raddrs == NULL) { 437 errno = EFAULT; 438 return (-1); 439 } 440 asoc = id; 441 siz = sizeof(sctp_assoc_t); 442 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_REMOTE_ADDR_SIZE, 443 &asoc, &siz) != 0) { 444 return (-1); 445 } 446 /* size required is returned in 'asoc' */ 447 siz = (size_t)asoc; 448 siz += sizeof(struct sctp_getaddresses); 449 addrs = calloc(1, siz); 450 if (addrs == NULL) { 451 return (-1); 452 } 453 addrs->sget_assoc_id = id; 454 /* Now lets get the array of addresses */ 455 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_PEER_ADDRESSES, 456 addrs, &siz) != 0) { 457 free(addrs); 458 return (-1); 459 } 460 re = (struct sockaddr *)&addrs->addr[0]; 461 *raddrs = re; 462 cnt = 0; 463 sa = (struct sockaddr *)&addrs->addr[0]; 464 lim = (caddr_t)addrs + siz; 465 while (((caddr_t)sa < lim) && (sa->sa_len > 0)) { 466 sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len); 467 cnt++; 468 } 469 return (cnt); 470 } 471 472 void 473 sctp_freepaddrs(struct sockaddr *addrs) 474 { 475 /* Take away the hidden association id */ 476 void *fr_addr; 477 478 fr_addr = (void *)((caddr_t)addrs - sizeof(sctp_assoc_t)); 479 /* Now free it */ 480 free(fr_addr); 481 } 482 483 int 484 sctp_getladdrs(int sd, sctp_assoc_t id, struct sockaddr **raddrs) 485 { 486 struct sctp_getaddresses *addrs; 487 struct sockaddr *re; 488 caddr_t lim; 489 struct sockaddr *sa; 490 int size_of_addresses; 491 socklen_t siz; 492 int cnt; 493 494 if (raddrs == NULL) { 495 errno = EFAULT; 496 return (-1); 497 } 498 size_of_addresses = 0; 499 siz = sizeof(int); 500 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_LOCAL_ADDR_SIZE, 501 &size_of_addresses, &siz) != 0) { 502 errno = ENOMEM; 503 return (-1); 504 } 505 if (size_of_addresses == 0) { 506 errno = ENOTCONN; 507 return (-1); 508 } 509 siz = size_of_addresses + sizeof(struct sockaddr_storage); 510 siz += sizeof(struct sctp_getaddresses); 511 addrs = calloc(1, siz); 512 if (addrs == NULL) { 513 errno = ENOMEM; 514 return (-1); 515 } 516 addrs->sget_assoc_id = id; 517 /* Now lets get the array of addresses */ 518 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_LOCAL_ADDRESSES, addrs, 519 &siz) != 0) { 520 free(addrs); 521 errno = ENOMEM; 522 return (-1); 523 } 524 re = (struct sockaddr *)&addrs->addr[0]; 525 *raddrs = re; 526 cnt = 0; 527 sa = (struct sockaddr *)&addrs->addr[0]; 528 lim = (caddr_t)addrs + siz; 529 while (((caddr_t)sa < lim) && (sa->sa_len > 0)) { 530 sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len); 531 cnt++; 532 } 533 return (cnt); 534 } 535 536 void 537 sctp_freeladdrs(struct sockaddr *addrs) 538 { 539 /* Take away the hidden association id */ 540 void *fr_addr; 541 542 fr_addr = (void *)((caddr_t)addrs - sizeof(sctp_assoc_t)); 543 /* Now free it */ 544 free(fr_addr); 545 } 546 547 548 ssize_t 549 sctp_sendmsg(int s, 550 const void *data, 551 size_t len, 552 const struct sockaddr *to, 553 socklen_t tolen, 554 uint32_t ppid, 555 uint32_t flags, 556 uint16_t stream_no, 557 uint32_t timetolive, 558 uint32_t context) 559 { 560 #ifdef SYS_sctp_generic_sendmsg 561 struct sctp_sndrcvinfo sinfo; 562 563 sinfo.sinfo_ppid = ppid; 564 sinfo.sinfo_flags = flags; 565 sinfo.sinfo_stream = stream_no; 566 sinfo.sinfo_timetolive = timetolive; 567 sinfo.sinfo_context = context; 568 sinfo.sinfo_assoc_id = 0; 569 return (syscall(SYS_sctp_generic_sendmsg, s, 570 data, len, to, tolen, &sinfo, 0)); 571 #else 572 ssize_t sz; 573 struct msghdr msg; 574 struct sctp_sndrcvinfo *s_info; 575 struct iovec iov; 576 char controlVector[SCTP_CONTROL_VEC_SIZE_RCV]; 577 struct cmsghdr *cmsg; 578 struct sockaddr *who = NULL; 579 union { 580 struct sockaddr_in in; 581 struct sockaddr_in6 in6; 582 } addr; 583 584 if ((tolen > 0) && 585 ((to == NULL) || (tolen < sizeof(struct sockaddr)))) { 586 errno = EINVAL; 587 return -1; 588 } 589 if (to && (tolen > 0)) { 590 if (to->sa_family == AF_INET) { 591 if (tolen != sizeof(struct sockaddr_in)) { 592 errno = EINVAL; 593 return -1; 594 } 595 if ((to->sa_len > 0) && 596 (to->sa_len != sizeof(struct sockaddr_in))) { 597 errno = EINVAL; 598 return -1; 599 } 600 memcpy(&addr, to, sizeof(struct sockaddr_in)); 601 addr.in.sin_len = sizeof(struct sockaddr_in); 602 } else if (to->sa_family == AF_INET6) { 603 if (tolen != sizeof(struct sockaddr_in6)) { 604 errno = EINVAL; 605 return -1; 606 } 607 if ((to->sa_len > 0) && 608 (to->sa_len != sizeof(struct sockaddr_in6))) { 609 errno = EINVAL; 610 return -1; 611 } 612 memcpy(&addr, to, sizeof(struct sockaddr_in6)); 613 addr.in6.sin6_len = sizeof(struct sockaddr_in6); 614 } else { 615 errno = EAFNOSUPPORT; 616 return -1; 617 } 618 who = (struct sockaddr *)&addr; 619 } 620 iov.iov_base = (char *)data; 621 iov.iov_len = len; 622 623 if (who) { 624 msg.msg_name = (caddr_t)who; 625 msg.msg_namelen = who->sa_len; 626 } else { 627 msg.msg_name = (caddr_t)NULL; 628 msg.msg_namelen = 0; 629 } 630 msg.msg_iov = &iov; 631 msg.msg_iovlen = 1; 632 msg.msg_control = (caddr_t)controlVector; 633 634 cmsg = (struct cmsghdr *)controlVector; 635 636 cmsg->cmsg_level = IPPROTO_SCTP; 637 cmsg->cmsg_type = SCTP_SNDRCV; 638 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo)); 639 s_info = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); 640 641 s_info->sinfo_stream = stream_no; 642 s_info->sinfo_ssn = 0; 643 s_info->sinfo_flags = flags; 644 s_info->sinfo_ppid = ppid; 645 s_info->sinfo_context = context; 646 s_info->sinfo_assoc_id = 0; 647 s_info->sinfo_timetolive = timetolive; 648 errno = 0; 649 msg.msg_controllen = cmsg->cmsg_len; 650 sz = sendmsg(s, &msg, 0); 651 return (sz); 652 #endif 653 } 654 655 656 sctp_assoc_t 657 sctp_getassocid(int sd, struct sockaddr *sa) 658 { 659 struct sctp_paddrinfo sp; 660 socklen_t siz; 661 662 /* First get the assoc id */ 663 siz = sizeof(sp); 664 memset(&sp, 0, sizeof(sp)); 665 memcpy((caddr_t)&sp.spinfo_address, sa, sa->sa_len); 666 errno = 0; 667 if (getsockopt(sd, IPPROTO_SCTP, 668 SCTP_GET_PEER_ADDR_INFO, &sp, &siz) != 0) { 669 return ((sctp_assoc_t) 0); 670 } 671 /* We depend on the fact that 0 can never be returned */ 672 return (sp.spinfo_assoc_id); 673 } 674 675 ssize_t 676 sctp_send(int sd, const void *data, size_t len, 677 const struct sctp_sndrcvinfo *sinfo, 678 int flags) 679 { 680 681 #ifdef SYS_sctp_generic_sendmsg 682 struct sockaddr *to = NULL; 683 684 return (syscall(SYS_sctp_generic_sendmsg, sd, 685 data, len, to, 0, sinfo, flags)); 686 #else 687 ssize_t sz; 688 struct msghdr msg; 689 struct iovec iov; 690 struct sctp_sndrcvinfo *s_info; 691 char controlVector[SCTP_CONTROL_VEC_SIZE_SND]; 692 struct cmsghdr *cmsg; 693 694 if (sinfo == NULL) { 695 errno = EINVAL; 696 return (-1); 697 } 698 iov.iov_base = (char *)data; 699 iov.iov_len = len; 700 701 msg.msg_name = 0; 702 msg.msg_namelen = 0; 703 msg.msg_iov = &iov; 704 msg.msg_iovlen = 1; 705 msg.msg_control = (caddr_t)controlVector; 706 707 cmsg = (struct cmsghdr *)controlVector; 708 709 cmsg->cmsg_level = IPPROTO_SCTP; 710 cmsg->cmsg_type = SCTP_SNDRCV; 711 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo)); 712 s_info = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); 713 /* copy in the data */ 714 *s_info = *sinfo; 715 errno = 0; 716 msg.msg_controllen = cmsg->cmsg_len; 717 sz = sendmsg(sd, &msg, flags); 718 return (sz); 719 #endif 720 } 721 722 723 724 ssize_t 725 sctp_sendx(int sd, const void *msg, size_t msg_len, 726 struct sockaddr *addrs, int addrcnt, 727 struct sctp_sndrcvinfo *sinfo, 728 int flags) 729 { 730 struct sctp_sndrcvinfo __sinfo; 731 ssize_t ret; 732 int i, cnt, *aa, saved_errno; 733 char *buf; 734 int add_len, len, no_end_cx = 0; 735 struct sockaddr *at; 736 737 if (addrs == NULL) { 738 errno = EINVAL; 739 return (-1); 740 } 741 #ifdef SYS_sctp_generic_sendmsg 742 if (addrcnt == 1) { 743 socklen_t l; 744 745 /* 746 * Quick way, we don't need to do a connectx so lets use the 747 * syscall directly. 748 */ 749 l = addrs->sa_len; 750 return (syscall(SYS_sctp_generic_sendmsg, sd, 751 msg, msg_len, addrs, l, sinfo, flags)); 752 } 753 #endif 754 755 len = sizeof(int); 756 at = addrs; 757 cnt = 0; 758 /* validate all the addresses and get the size */ 759 for (i = 0; i < addrcnt; i++) { 760 if (at->sa_family == AF_INET) { 761 add_len = sizeof(struct sockaddr_in); 762 } else if (at->sa_family == AF_INET6) { 763 add_len = sizeof(struct sockaddr_in6); 764 } else { 765 errno = EINVAL; 766 return (-1); 767 } 768 len += add_len; 769 at = (struct sockaddr *)((caddr_t)at + add_len); 770 cnt++; 771 } 772 /* do we have any? */ 773 if (cnt == 0) { 774 errno = EINVAL; 775 return (-1); 776 } 777 buf = malloc(len); 778 if (buf == NULL) { 779 return (-1); 780 } 781 aa = (int *)buf; 782 *aa = cnt; 783 aa++; 784 memcpy((caddr_t)aa, addrs, (len - sizeof(int))); 785 ret = setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_DELAYED, (void *)buf, 786 (socklen_t) len); 787 788 free(buf); 789 if (ret != 0) { 790 if (errno == EALREADY) { 791 no_end_cx = 1; 792 goto continue_send; 793 } 794 return (ret); 795 } 796 continue_send: 797 if (sinfo == NULL) { 798 sinfo = &__sinfo; 799 memset(&__sinfo, 0, sizeof(__sinfo)); 800 } 801 sinfo->sinfo_assoc_id = sctp_getassocid(sd, addrs); 802 if (sinfo->sinfo_assoc_id == 0) { 803 printf("Huh, can't get associd? TSNH!\n"); 804 (void)setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_COMPLETE, (void *)addrs, 805 (socklen_t) addrs->sa_len); 806 errno = ENOENT; 807 return (-1); 808 } 809 ret = sctp_send(sd, msg, msg_len, sinfo, flags); 810 saved_errno = errno; 811 if (no_end_cx == 0) 812 (void)setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_COMPLETE, (void *)addrs, 813 (socklen_t) addrs->sa_len); 814 815 errno = saved_errno; 816 return (ret); 817 } 818 819 ssize_t 820 sctp_sendmsgx(int sd, 821 const void *msg, 822 size_t len, 823 struct sockaddr *addrs, 824 int addrcnt, 825 uint32_t ppid, 826 uint32_t flags, 827 uint16_t stream_no, 828 uint32_t timetolive, 829 uint32_t context) 830 { 831 struct sctp_sndrcvinfo sinfo; 832 833 memset((void *)&sinfo, 0, sizeof(struct sctp_sndrcvinfo)); 834 sinfo.sinfo_ppid = ppid; 835 sinfo.sinfo_flags = flags; 836 sinfo.sinfo_ssn = stream_no; 837 sinfo.sinfo_timetolive = timetolive; 838 sinfo.sinfo_context = context; 839 return sctp_sendx(sd, msg, len, addrs, addrcnt, &sinfo, 0); 840 } 841 842 ssize_t 843 sctp_recvmsg(int s, 844 void *dbuf, 845 size_t len, 846 struct sockaddr *from, 847 socklen_t * fromlen, 848 struct sctp_sndrcvinfo *sinfo, 849 int *msg_flags) 850 { 851 #ifdef SYS_sctp_generic_recvmsg 852 struct iovec iov; 853 854 iov.iov_base = dbuf; 855 iov.iov_len = len; 856 return (syscall(SYS_sctp_generic_recvmsg, s, 857 &iov, 1, from, fromlen, sinfo, msg_flags)); 858 #else 859 struct sctp_sndrcvinfo *s_info; 860 ssize_t sz; 861 int sinfo_found = 0; 862 struct msghdr msg; 863 struct iovec iov; 864 char controlVector[SCTP_CONTROL_VEC_SIZE_RCV]; 865 struct cmsghdr *cmsg; 866 867 if (msg_flags == NULL) { 868 errno = EINVAL; 869 return (-1); 870 } 871 msg.msg_flags = 0; 872 iov.iov_base = dbuf; 873 iov.iov_len = len; 874 msg.msg_name = (caddr_t)from; 875 if (fromlen == NULL) 876 msg.msg_namelen = 0; 877 else 878 msg.msg_namelen = *fromlen; 879 msg.msg_iov = &iov; 880 msg.msg_iovlen = 1; 881 msg.msg_control = (caddr_t)controlVector; 882 msg.msg_controllen = sizeof(controlVector); 883 errno = 0; 884 sz = recvmsg(s, &msg, *msg_flags); 885 *msg_flags = msg.msg_flags; 886 if (sz <= 0) { 887 return (sz); 888 } 889 s_info = NULL; 890 len = sz; 891 if (sinfo) { 892 sinfo->sinfo_assoc_id = 0; 893 } 894 if ((msg.msg_controllen) && sinfo) { 895 /* 896 * parse through and see if we find the sctp_sndrcvinfo (if 897 * the user wants it). 898 */ 899 cmsg = (struct cmsghdr *)controlVector; 900 while (cmsg) { 901 if ((cmsg->cmsg_len == 0) || (cmsg->cmsg_len > msg.msg_controllen)) { 902 break; 903 } 904 if (cmsg->cmsg_level == IPPROTO_SCTP) { 905 if (cmsg->cmsg_type == SCTP_SNDRCV) { 906 /* Got it */ 907 s_info = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); 908 /* Copy it to the user */ 909 if (sinfo) 910 *sinfo = *s_info; 911 sinfo_found = 1; 912 break; 913 } else if (cmsg->cmsg_type == SCTP_EXTRCV) { 914 /* 915 * Got it, presumably the user has 916 * asked for this extra info, so the 917 * structure holds more room :-D 918 */ 919 s_info = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); 920 /* Copy it to the user */ 921 if (sinfo) { 922 memcpy(sinfo, s_info, sizeof(struct sctp_extrcvinfo)); 923 } 924 sinfo_found = 1; 925 break; 926 927 } 928 } 929 cmsg = CMSG_NXTHDR(&msg, cmsg); 930 } 931 } 932 return (sz); 933 #endif 934 } 935 936 ssize_t 937 sctp_recvv(int sd, 938 const struct iovec *iov, 939 int iovlen, 940 struct sockaddr *from, 941 socklen_t * fromlen, 942 void *info, 943 socklen_t * infolen, 944 unsigned int *infotype, 945 int *flags) 946 { 947 char ctlbuf[SCTP_CONTROL_VEC_SIZE_RCV]; 948 struct msghdr msg; 949 struct cmsghdr *cmsg; 950 ssize_t n; 951 struct sctp_rcvinfo *rcvinfo; 952 struct sctp_nxtinfo *nxtinfo; 953 954 if (((info != NULL) && (infolen == NULL)) | 955 ((info == NULL) && (infolen != NULL) && (*infolen != 0)) || 956 ((info != NULL) && (infotype == NULL))) { 957 errno = EINVAL; 958 return (-1); 959 } 960 if (infotype) { 961 *infotype = SCTP_RECVV_NOINFO; 962 } 963 msg.msg_name = from; 964 if (fromlen == NULL) { 965 msg.msg_namelen = 0; 966 } else { 967 msg.msg_namelen = *fromlen; 968 } 969 msg.msg_iov = (struct iovec *)iov; 970 msg.msg_iovlen = iovlen; 971 msg.msg_control = ctlbuf; 972 msg.msg_controllen = sizeof(ctlbuf); 973 errno = 0; 974 n = recvmsg(sd, &msg, *flags); 975 *flags = msg.msg_flags; 976 if ((n > 0) && 977 (msg.msg_controllen > 0) && 978 (infotype != NULL) && 979 (infolen != NULL) && 980 (*infolen > 0)) { 981 rcvinfo = NULL; 982 nxtinfo = NULL; 983 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) { 984 if (cmsg->cmsg_level != IPPROTO_SCTP) { 985 continue; 986 } 987 if (cmsg->cmsg_type == SCTP_RCVINFO) { 988 rcvinfo = (struct sctp_rcvinfo *)CMSG_DATA(cmsg); 989 } 990 if (cmsg->cmsg_type == SCTP_NXTINFO) { 991 nxtinfo = (struct sctp_nxtinfo *)CMSG_DATA(cmsg); 992 } 993 if (rcvinfo && nxtinfo) { 994 break; 995 } 996 } 997 if (rcvinfo) { 998 if (nxtinfo) { 999 if (*infolen >= sizeof(struct sctp_recvv_rn)) { 1000 struct sctp_recvv_rn *rn_info; 1001 1002 rn_info = (struct sctp_recvv_rn *)info; 1003 rn_info->recvv_rcvinfo = *rcvinfo; 1004 rn_info->recvv_nxtinfo = *nxtinfo; 1005 *infolen = (socklen_t) sizeof(struct sctp_recvv_rn); 1006 *infotype = SCTP_RECVV_RN; 1007 } 1008 } else { 1009 if (*infolen >= sizeof(struct sctp_rcvinfo)) { 1010 memcpy(info, rcvinfo, sizeof(struct sctp_rcvinfo)); 1011 *infolen = (socklen_t) sizeof(struct sctp_rcvinfo); 1012 *infotype = SCTP_RECVV_RCVINFO; 1013 } 1014 } 1015 } else if (nxtinfo) { 1016 if (*infolen >= sizeof(struct sctp_rcvinfo)) { 1017 memcpy(info, nxtinfo, sizeof(struct sctp_nxtinfo)); 1018 *infolen = (socklen_t) sizeof(struct sctp_nxtinfo); 1019 *infotype = SCTP_RECVV_NXTINFO; 1020 } 1021 } 1022 } 1023 return (n); 1024 } 1025 1026 ssize_t 1027 sctp_sendv(int sd, 1028 const struct iovec *iov, int iovcnt, 1029 struct sockaddr *addrs, int addrcnt, 1030 void *info, socklen_t infolen, unsigned int infotype, 1031 int flags) 1032 { 1033 ssize_t ret; 1034 int i; 1035 socklen_t addr_len; 1036 struct msghdr msg; 1037 in_port_t port; 1038 struct sctp_sendv_spa *spa_info; 1039 struct cmsghdr *cmsg; 1040 char *cmsgbuf; 1041 struct sockaddr *addr; 1042 struct sockaddr_in *addr_in; 1043 struct sockaddr_in6 *addr_in6; 1044 1045 if ((addrcnt < 0) || 1046 (iovcnt < 0) || 1047 ((addrs == NULL) && (addrcnt > 0)) || 1048 ((addrs != NULL) && (addrcnt == 0)) || 1049 ((iov == NULL) && (iovcnt > 0)) || 1050 ((iov != NULL) && (iovcnt == 0))) { 1051 errno = EINVAL; 1052 return (-1); 1053 } 1054 cmsgbuf = malloc(CMSG_SPACE(sizeof(struct sctp_sndinfo)) + 1055 CMSG_SPACE(sizeof(struct sctp_prinfo)) + 1056 CMSG_SPACE(sizeof(struct sctp_authinfo)) + 1057 addrcnt * CMSG_SPACE(sizeof(struct in6_addr))); 1058 if (cmsgbuf == NULL) { 1059 errno = ENOBUFS; 1060 return (-1); 1061 } 1062 msg.msg_control = cmsgbuf; 1063 msg.msg_controllen = 0; 1064 cmsg = (struct cmsghdr *)cmsgbuf; 1065 switch (infotype) { 1066 case SCTP_SENDV_NOINFO: 1067 if ((infolen != 0) || (info != NULL)) { 1068 free(cmsgbuf); 1069 errno = EINVAL; 1070 return (-1); 1071 } 1072 break; 1073 case SCTP_SENDV_SNDINFO: 1074 if ((info == NULL) || (infolen < sizeof(struct sctp_sndinfo))) { 1075 free(cmsgbuf); 1076 errno = EINVAL; 1077 return (-1); 1078 } 1079 cmsg->cmsg_level = IPPROTO_SCTP; 1080 cmsg->cmsg_type = SCTP_SNDINFO; 1081 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndinfo)); 1082 memcpy(CMSG_DATA(cmsg), info, sizeof(struct sctp_sndinfo)); 1083 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndinfo)); 1084 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_sndinfo))); 1085 break; 1086 case SCTP_SENDV_PRINFO: 1087 if ((info == NULL) || (infolen < sizeof(struct sctp_prinfo))) { 1088 free(cmsgbuf); 1089 errno = EINVAL; 1090 return (-1); 1091 } 1092 cmsg->cmsg_level = IPPROTO_SCTP; 1093 cmsg->cmsg_type = SCTP_PRINFO; 1094 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_prinfo)); 1095 memcpy(CMSG_DATA(cmsg), info, sizeof(struct sctp_prinfo)); 1096 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_prinfo)); 1097 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_prinfo))); 1098 break; 1099 case SCTP_SENDV_AUTHINFO: 1100 if ((info == NULL) || (infolen < sizeof(struct sctp_authinfo))) { 1101 free(cmsgbuf); 1102 errno = EINVAL; 1103 return (-1); 1104 } 1105 cmsg->cmsg_level = IPPROTO_SCTP; 1106 cmsg->cmsg_type = SCTP_AUTHINFO; 1107 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_authinfo)); 1108 memcpy(CMSG_DATA(cmsg), info, sizeof(struct sctp_authinfo)); 1109 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_authinfo)); 1110 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_authinfo))); 1111 break; 1112 case SCTP_SENDV_SPA: 1113 if ((info == NULL) || (infolen < sizeof(struct sctp_sendv_spa))) { 1114 free(cmsgbuf); 1115 errno = EINVAL; 1116 return (-1); 1117 } 1118 spa_info = (struct sctp_sendv_spa *)info; 1119 if (spa_info->sendv_flags & SCTP_SEND_SNDINFO_VALID) { 1120 cmsg->cmsg_level = IPPROTO_SCTP; 1121 cmsg->cmsg_type = SCTP_SNDINFO; 1122 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndinfo)); 1123 memcpy(CMSG_DATA(cmsg), &spa_info->sendv_sndinfo, sizeof(struct sctp_sndinfo)); 1124 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndinfo)); 1125 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_sndinfo))); 1126 } 1127 if (spa_info->sendv_flags & SCTP_SEND_PRINFO_VALID) { 1128 cmsg->cmsg_level = IPPROTO_SCTP; 1129 cmsg->cmsg_type = SCTP_PRINFO; 1130 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_prinfo)); 1131 memcpy(CMSG_DATA(cmsg), &spa_info->sendv_prinfo, sizeof(struct sctp_prinfo)); 1132 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_prinfo)); 1133 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_prinfo))); 1134 } 1135 if (spa_info->sendv_flags & SCTP_SEND_AUTHINFO_VALID) { 1136 cmsg->cmsg_level = IPPROTO_SCTP; 1137 cmsg->cmsg_type = SCTP_AUTHINFO; 1138 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_authinfo)); 1139 memcpy(CMSG_DATA(cmsg), &spa_info->sendv_authinfo, sizeof(struct sctp_authinfo)); 1140 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_authinfo)); 1141 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_authinfo))); 1142 } 1143 break; 1144 default: 1145 free(cmsgbuf); 1146 errno = EINVAL; 1147 return (-1); 1148 } 1149 addr = addrs; 1150 msg.msg_name = NULL; 1151 msg.msg_namelen = 0; 1152 1153 for (i = 0; i < addrcnt; i++) { 1154 switch (addr->sa_family) { 1155 case AF_INET: 1156 addr_len = (socklen_t) sizeof(struct sockaddr_in); 1157 addr_in = (struct sockaddr_in *)addr; 1158 if (addr_in->sin_len != addr_len) { 1159 free(cmsgbuf); 1160 errno = EINVAL; 1161 return (-1); 1162 } 1163 if (i == 0) { 1164 port = addr_in->sin_port; 1165 } else { 1166 if (port == addr_in->sin_port) { 1167 cmsg->cmsg_level = IPPROTO_SCTP; 1168 cmsg->cmsg_type = SCTP_DSTADDRV4; 1169 cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_addr)); 1170 memcpy(CMSG_DATA(cmsg), &addr_in->sin_addr, sizeof(struct in_addr)); 1171 msg.msg_controllen += CMSG_SPACE(sizeof(struct in_addr)); 1172 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct in_addr))); 1173 } else { 1174 free(cmsgbuf); 1175 errno = EINVAL; 1176 return (-1); 1177 } 1178 } 1179 break; 1180 case AF_INET6: 1181 addr_len = (socklen_t) sizeof(struct sockaddr_in6); 1182 addr_in6 = (struct sockaddr_in6 *)addr; 1183 if (addr_in6->sin6_len != addr_len) { 1184 free(cmsgbuf); 1185 errno = EINVAL; 1186 return (-1); 1187 } 1188 if (i == 0) { 1189 port = addr_in6->sin6_port; 1190 } else { 1191 if (port == addr_in6->sin6_port) { 1192 cmsg->cmsg_level = IPPROTO_SCTP; 1193 cmsg->cmsg_type = SCTP_DSTADDRV6; 1194 cmsg->cmsg_len = CMSG_LEN(sizeof(struct in6_addr)); 1195 memcpy(CMSG_DATA(cmsg), &addr_in6->sin6_addr, sizeof(struct in6_addr)); 1196 msg.msg_controllen += CMSG_SPACE(sizeof(struct in6_addr)); 1197 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct in6_addr))); 1198 } else { 1199 free(cmsgbuf); 1200 errno = EINVAL; 1201 return (-1); 1202 } 1203 } 1204 break; 1205 default: 1206 free(cmsgbuf); 1207 errno = EINVAL; 1208 return (-1); 1209 } 1210 if (i == 0) { 1211 msg.msg_name = addr; 1212 msg.msg_namelen = addr_len; 1213 } 1214 addr = (struct sockaddr *)((caddr_t)addr + addr_len); 1215 } 1216 if (msg.msg_controllen == 0) { 1217 msg.msg_control = NULL; 1218 } 1219 msg.msg_iov = (struct iovec *)iov; 1220 msg.msg_iovlen = iovcnt; 1221 msg.msg_flags = 0; 1222 ret = sendmsg(sd, &msg, flags); 1223 free(cmsgbuf); 1224 return (ret); 1225 } 1226 1227 1228 #if !defined(SYS_sctp_peeloff) && !defined(HAVE_SCTP_PEELOFF_SOCKOPT) 1229 1230 int 1231 sctp_peeloff(int sd, sctp_assoc_t assoc_id) 1232 { 1233 /* NOT supported, return invalid sd */ 1234 errno = ENOTSUP; 1235 return (-1); 1236 } 1237 1238 #endif 1239 #if defined(SYS_sctp_peeloff) && !defined(HAVE_SCTP_PEELOFF_SOCKOPT) 1240 int 1241 sctp_peeloff(int sd, sctp_assoc_t assoc_id) 1242 { 1243 return (syscall(SYS_sctp_peeloff, sd, assoc_id)); 1244 } 1245 1246 #endif 1247 1248 1249 #undef SCTP_CONTROL_VEC_SIZE_SND 1250 #undef SCTP_CONTROL_VEC_SIZE_RCV 1251 #undef SCTP_STACK_BUF_SIZE 1252