sctp_sys_calls.c revision 227755
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: head/lib/libc/net/sctp_sys_calls.c 227755 2011-11-20 15:00:45Z tuexen $"); 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 68static void 69SCTPPrintAnAddress(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 131static void 132in6_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 141int 142sctp_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 169int 170sctp_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 241int 242sctp_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 351int 352sctp_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_REMOTE_UDP_ENCAPS_PORT: 417 ((struct sctp_udpencaps *)arg)->sue_assoc_id = id; 418 break; 419 case SCTP_MAX_BURST: 420 ((struct sctp_assoc_value *)arg)->assoc_id = id; 421 break; 422 default: 423 break; 424 } 425 return (getsockopt(sd, IPPROTO_SCTP, opt, arg, size)); 426} 427 428int 429sctp_getpaddrs(int sd, sctp_assoc_t id, struct sockaddr **raddrs) 430{ 431 struct sctp_getaddresses *addrs; 432 struct sockaddr *sa; 433 struct sockaddr *re; 434 sctp_assoc_t asoc; 435 caddr_t lim; 436 socklen_t siz; 437 int cnt; 438 439 if (raddrs == NULL) { 440 errno = EFAULT; 441 return (-1); 442 } 443 asoc = id; 444 siz = sizeof(sctp_assoc_t); 445 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_REMOTE_ADDR_SIZE, 446 &asoc, &siz) != 0) { 447 return (-1); 448 } 449 /* size required is returned in 'asoc' */ 450 siz = (size_t)asoc; 451 siz += sizeof(struct sctp_getaddresses); 452 addrs = calloc(1, siz); 453 if (addrs == NULL) { 454 return (-1); 455 } 456 addrs->sget_assoc_id = id; 457 /* Now lets get the array of addresses */ 458 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_PEER_ADDRESSES, 459 addrs, &siz) != 0) { 460 free(addrs); 461 return (-1); 462 } 463 re = (struct sockaddr *)&addrs->addr[0]; 464 *raddrs = re; 465 cnt = 0; 466 sa = (struct sockaddr *)&addrs->addr[0]; 467 lim = (caddr_t)addrs + siz; 468 while (((caddr_t)sa < lim) && (sa->sa_len > 0)) { 469 sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len); 470 cnt++; 471 } 472 return (cnt); 473} 474 475void 476sctp_freepaddrs(struct sockaddr *addrs) 477{ 478 /* Take away the hidden association id */ 479 void *fr_addr; 480 481 fr_addr = (void *)((caddr_t)addrs - sizeof(sctp_assoc_t)); 482 /* Now free it */ 483 free(fr_addr); 484} 485 486int 487sctp_getladdrs(int sd, sctp_assoc_t id, struct sockaddr **raddrs) 488{ 489 struct sctp_getaddresses *addrs; 490 struct sockaddr *re; 491 caddr_t lim; 492 struct sockaddr *sa; 493 int size_of_addresses; 494 socklen_t siz; 495 int cnt; 496 497 if (raddrs == NULL) { 498 errno = EFAULT; 499 return (-1); 500 } 501 size_of_addresses = 0; 502 siz = sizeof(int); 503 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_LOCAL_ADDR_SIZE, 504 &size_of_addresses, &siz) != 0) { 505 errno = ENOMEM; 506 return (-1); 507 } 508 if (size_of_addresses == 0) { 509 errno = ENOTCONN; 510 return (-1); 511 } 512 siz = size_of_addresses + sizeof(struct sockaddr_storage); 513 siz += sizeof(struct sctp_getaddresses); 514 addrs = calloc(1, siz); 515 if (addrs == NULL) { 516 errno = ENOMEM; 517 return (-1); 518 } 519 addrs->sget_assoc_id = id; 520 /* Now lets get the array of addresses */ 521 if (getsockopt(sd, IPPROTO_SCTP, SCTP_GET_LOCAL_ADDRESSES, addrs, 522 &siz) != 0) { 523 free(addrs); 524 errno = ENOMEM; 525 return (-1); 526 } 527 re = (struct sockaddr *)&addrs->addr[0]; 528 *raddrs = re; 529 cnt = 0; 530 sa = (struct sockaddr *)&addrs->addr[0]; 531 lim = (caddr_t)addrs + siz; 532 while (((caddr_t)sa < lim) && (sa->sa_len > 0)) { 533 sa = (struct sockaddr *)((caddr_t)sa + sa->sa_len); 534 cnt++; 535 } 536 return (cnt); 537} 538 539void 540sctp_freeladdrs(struct sockaddr *addrs) 541{ 542 /* Take away the hidden association id */ 543 void *fr_addr; 544 545 fr_addr = (void *)((caddr_t)addrs - sizeof(sctp_assoc_t)); 546 /* Now free it */ 547 free(fr_addr); 548} 549 550 551ssize_t 552sctp_sendmsg(int s, 553 const void *data, 554 size_t len, 555 const struct sockaddr *to, 556 socklen_t tolen, 557 uint32_t ppid, 558 uint32_t flags, 559 uint16_t stream_no, 560 uint32_t timetolive, 561 uint32_t context) 562{ 563#ifdef SYS_sctp_generic_sendmsg 564 struct sctp_sndrcvinfo sinfo; 565 566 sinfo.sinfo_ppid = ppid; 567 sinfo.sinfo_flags = flags; 568 sinfo.sinfo_stream = stream_no; 569 sinfo.sinfo_timetolive = timetolive; 570 sinfo.sinfo_context = context; 571 sinfo.sinfo_assoc_id = 0; 572 return (syscall(SYS_sctp_generic_sendmsg, s, 573 data, len, to, tolen, &sinfo, 0)); 574#else 575 ssize_t sz; 576 struct msghdr msg; 577 struct sctp_sndrcvinfo *s_info; 578 struct iovec iov; 579 char controlVector[SCTP_CONTROL_VEC_SIZE_RCV]; 580 struct cmsghdr *cmsg; 581 struct sockaddr *who = NULL; 582 union { 583 struct sockaddr_in in; 584 struct sockaddr_in6 in6; 585 } addr; 586 587 if ((tolen > 0) && 588 ((to == NULL) || (tolen < sizeof(struct sockaddr)))) { 589 errno = EINVAL; 590 return -1; 591 } 592 if (to && (tolen > 0)) { 593 if (to->sa_family == AF_INET) { 594 if (tolen != sizeof(struct sockaddr_in)) { 595 errno = EINVAL; 596 return -1; 597 } 598 if ((to->sa_len > 0) && 599 (to->sa_len != sizeof(struct sockaddr_in))) { 600 errno = EINVAL; 601 return -1; 602 } 603 memcpy(&addr, to, sizeof(struct sockaddr_in)); 604 addr.in.sin_len = sizeof(struct sockaddr_in); 605 } else if (to->sa_family == AF_INET6) { 606 if (tolen != sizeof(struct sockaddr_in6)) { 607 errno = EINVAL; 608 return -1; 609 } 610 if ((to->sa_len > 0) && 611 (to->sa_len != sizeof(struct sockaddr_in6))) { 612 errno = EINVAL; 613 return -1; 614 } 615 memcpy(&addr, to, sizeof(struct sockaddr_in6)); 616 addr.in6.sin6_len = sizeof(struct sockaddr_in6); 617 } else { 618 errno = EAFNOSUPPORT; 619 return -1; 620 } 621 who = (struct sockaddr *)&addr; 622 } 623 iov.iov_base = (char *)data; 624 iov.iov_len = len; 625 626 if (who) { 627 msg.msg_name = (caddr_t)who; 628 msg.msg_namelen = who->sa_len; 629 } else { 630 msg.msg_name = (caddr_t)NULL; 631 msg.msg_namelen = 0; 632 } 633 msg.msg_iov = &iov; 634 msg.msg_iovlen = 1; 635 msg.msg_control = (caddr_t)controlVector; 636 637 cmsg = (struct cmsghdr *)controlVector; 638 639 cmsg->cmsg_level = IPPROTO_SCTP; 640 cmsg->cmsg_type = SCTP_SNDRCV; 641 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo)); 642 s_info = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); 643 644 s_info->sinfo_stream = stream_no; 645 s_info->sinfo_ssn = 0; 646 s_info->sinfo_flags = flags; 647 s_info->sinfo_ppid = ppid; 648 s_info->sinfo_context = context; 649 s_info->sinfo_assoc_id = 0; 650 s_info->sinfo_timetolive = timetolive; 651 errno = 0; 652 msg.msg_controllen = cmsg->cmsg_len; 653 sz = sendmsg(s, &msg, 0); 654 return (sz); 655#endif 656} 657 658 659sctp_assoc_t 660sctp_getassocid(int sd, struct sockaddr *sa) 661{ 662 struct sctp_paddrinfo sp; 663 socklen_t siz; 664 665 /* First get the assoc id */ 666 siz = sizeof(sp); 667 memset(&sp, 0, sizeof(sp)); 668 memcpy((caddr_t)&sp.spinfo_address, sa, sa->sa_len); 669 errno = 0; 670 if (getsockopt(sd, IPPROTO_SCTP, 671 SCTP_GET_PEER_ADDR_INFO, &sp, &siz) != 0) { 672 return ((sctp_assoc_t) 0); 673 } 674 /* We depend on the fact that 0 can never be returned */ 675 return (sp.spinfo_assoc_id); 676} 677 678ssize_t 679sctp_send(int sd, const void *data, size_t len, 680 const struct sctp_sndrcvinfo *sinfo, 681 int flags) 682{ 683 684#ifdef SYS_sctp_generic_sendmsg 685 struct sockaddr *to = NULL; 686 687 return (syscall(SYS_sctp_generic_sendmsg, sd, 688 data, len, to, 0, sinfo, flags)); 689#else 690 ssize_t sz; 691 struct msghdr msg; 692 struct iovec iov; 693 struct sctp_sndrcvinfo *s_info; 694 char controlVector[SCTP_CONTROL_VEC_SIZE_SND]; 695 struct cmsghdr *cmsg; 696 697 if (sinfo == NULL) { 698 errno = EINVAL; 699 return (-1); 700 } 701 iov.iov_base = (char *)data; 702 iov.iov_len = len; 703 704 msg.msg_name = 0; 705 msg.msg_namelen = 0; 706 msg.msg_iov = &iov; 707 msg.msg_iovlen = 1; 708 msg.msg_control = (caddr_t)controlVector; 709 710 cmsg = (struct cmsghdr *)controlVector; 711 712 cmsg->cmsg_level = IPPROTO_SCTP; 713 cmsg->cmsg_type = SCTP_SNDRCV; 714 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndrcvinfo)); 715 s_info = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); 716 /* copy in the data */ 717 *s_info = *sinfo; 718 errno = 0; 719 msg.msg_controllen = cmsg->cmsg_len; 720 sz = sendmsg(sd, &msg, flags); 721 return (sz); 722#endif 723} 724 725 726 727ssize_t 728sctp_sendx(int sd, const void *msg, size_t msg_len, 729 struct sockaddr *addrs, int addrcnt, 730 struct sctp_sndrcvinfo *sinfo, 731 int flags) 732{ 733 struct sctp_sndrcvinfo __sinfo; 734 ssize_t ret; 735 int i, cnt, *aa, saved_errno; 736 char *buf; 737 int add_len, len, no_end_cx = 0; 738 struct sockaddr *at; 739 740 if (addrs == NULL) { 741 errno = EINVAL; 742 return (-1); 743 } 744#ifdef SYS_sctp_generic_sendmsg 745 if (addrcnt == 1) { 746 socklen_t l; 747 748 /* 749 * Quick way, we don't need to do a connectx so lets use the 750 * syscall directly. 751 */ 752 l = addrs->sa_len; 753 return (syscall(SYS_sctp_generic_sendmsg, sd, 754 msg, msg_len, addrs, l, sinfo, flags)); 755 } 756#endif 757 758 len = sizeof(int); 759 at = addrs; 760 cnt = 0; 761 /* validate all the addresses and get the size */ 762 for (i = 0; i < addrcnt; i++) { 763 if (at->sa_family == AF_INET) { 764 add_len = sizeof(struct sockaddr_in); 765 } else if (at->sa_family == AF_INET6) { 766 add_len = sizeof(struct sockaddr_in6); 767 } else { 768 errno = EINVAL; 769 return (-1); 770 } 771 len += add_len; 772 at = (struct sockaddr *)((caddr_t)at + add_len); 773 cnt++; 774 } 775 /* do we have any? */ 776 if (cnt == 0) { 777 errno = EINVAL; 778 return (-1); 779 } 780 buf = malloc(len); 781 if (buf == NULL) { 782 return (-1); 783 } 784 aa = (int *)buf; 785 *aa = cnt; 786 aa++; 787 memcpy((caddr_t)aa, addrs, (len - sizeof(int))); 788 ret = setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_DELAYED, (void *)buf, 789 (socklen_t) len); 790 791 free(buf); 792 if (ret != 0) { 793 if (errno == EALREADY) { 794 no_end_cx = 1; 795 goto continue_send; 796 } 797 return (ret); 798 } 799continue_send: 800 if (sinfo == NULL) { 801 sinfo = &__sinfo; 802 memset(&__sinfo, 0, sizeof(__sinfo)); 803 } 804 sinfo->sinfo_assoc_id = sctp_getassocid(sd, addrs); 805 if (sinfo->sinfo_assoc_id == 0) { 806 printf("Huh, can't get associd? TSNH!\n"); 807 (void)setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_COMPLETE, (void *)addrs, 808 (socklen_t) addrs->sa_len); 809 errno = ENOENT; 810 return (-1); 811 } 812 ret = sctp_send(sd, msg, msg_len, sinfo, flags); 813 saved_errno = errno; 814 if (no_end_cx == 0) 815 (void)setsockopt(sd, IPPROTO_SCTP, SCTP_CONNECT_X_COMPLETE, (void *)addrs, 816 (socklen_t) addrs->sa_len); 817 818 errno = saved_errno; 819 return (ret); 820} 821 822ssize_t 823sctp_sendmsgx(int sd, 824 const void *msg, 825 size_t len, 826 struct sockaddr *addrs, 827 int addrcnt, 828 uint32_t ppid, 829 uint32_t flags, 830 uint16_t stream_no, 831 uint32_t timetolive, 832 uint32_t context) 833{ 834 struct sctp_sndrcvinfo sinfo; 835 836 memset((void *)&sinfo, 0, sizeof(struct sctp_sndrcvinfo)); 837 sinfo.sinfo_ppid = ppid; 838 sinfo.sinfo_flags = flags; 839 sinfo.sinfo_ssn = stream_no; 840 sinfo.sinfo_timetolive = timetolive; 841 sinfo.sinfo_context = context; 842 return sctp_sendx(sd, msg, len, addrs, addrcnt, &sinfo, 0); 843} 844 845ssize_t 846sctp_recvmsg(int s, 847 void *dbuf, 848 size_t len, 849 struct sockaddr *from, 850 socklen_t * fromlen, 851 struct sctp_sndrcvinfo *sinfo, 852 int *msg_flags) 853{ 854#ifdef SYS_sctp_generic_recvmsg 855 struct iovec iov; 856 857 iov.iov_base = dbuf; 858 iov.iov_len = len; 859 return (syscall(SYS_sctp_generic_recvmsg, s, 860 &iov, 1, from, fromlen, sinfo, msg_flags)); 861#else 862 struct sctp_sndrcvinfo *s_info; 863 ssize_t sz; 864 int sinfo_found = 0; 865 struct msghdr msg; 866 struct iovec iov; 867 char controlVector[SCTP_CONTROL_VEC_SIZE_RCV]; 868 struct cmsghdr *cmsg; 869 870 if (msg_flags == NULL) { 871 errno = EINVAL; 872 return (-1); 873 } 874 msg.msg_flags = 0; 875 iov.iov_base = dbuf; 876 iov.iov_len = len; 877 msg.msg_name = (caddr_t)from; 878 if (fromlen == NULL) 879 msg.msg_namelen = 0; 880 else 881 msg.msg_namelen = *fromlen; 882 msg.msg_iov = &iov; 883 msg.msg_iovlen = 1; 884 msg.msg_control = (caddr_t)controlVector; 885 msg.msg_controllen = sizeof(controlVector); 886 errno = 0; 887 sz = recvmsg(s, &msg, *msg_flags); 888 *msg_flags = msg.msg_flags; 889 if (sz <= 0) { 890 return (sz); 891 } 892 s_info = NULL; 893 len = sz; 894 if (sinfo) { 895 sinfo->sinfo_assoc_id = 0; 896 } 897 if ((msg.msg_controllen) && sinfo) { 898 /* 899 * parse through and see if we find the sctp_sndrcvinfo (if 900 * the user wants it). 901 */ 902 cmsg = (struct cmsghdr *)controlVector; 903 while (cmsg) { 904 if ((cmsg->cmsg_len == 0) || (cmsg->cmsg_len > msg.msg_controllen)) { 905 break; 906 } 907 if (cmsg->cmsg_level == IPPROTO_SCTP) { 908 if (cmsg->cmsg_type == SCTP_SNDRCV) { 909 /* Got it */ 910 s_info = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); 911 /* Copy it to the user */ 912 if (sinfo) 913 *sinfo = *s_info; 914 sinfo_found = 1; 915 break; 916 } else if (cmsg->cmsg_type == SCTP_EXTRCV) { 917 /* 918 * Got it, presumably the user has 919 * asked for this extra info, so the 920 * structure holds more room :-D 921 */ 922 s_info = (struct sctp_sndrcvinfo *)CMSG_DATA(cmsg); 923 /* Copy it to the user */ 924 if (sinfo) { 925 memcpy(sinfo, s_info, sizeof(struct sctp_extrcvinfo)); 926 } 927 sinfo_found = 1; 928 break; 929 930 } 931 } 932 cmsg = CMSG_NXTHDR(&msg, cmsg); 933 } 934 } 935 return (sz); 936#endif 937} 938 939ssize_t 940sctp_recvv(int sd, 941 const struct iovec *iov, 942 int iovlen, 943 struct sockaddr *from, 944 socklen_t * fromlen, 945 void *info, 946 socklen_t * infolen, 947 unsigned int *infotype, 948 int *flags) 949{ 950 char ctlbuf[SCTP_CONTROL_VEC_SIZE_RCV]; 951 struct msghdr msg; 952 struct cmsghdr *cmsg; 953 ssize_t n; 954 struct sctp_rcvinfo *rcvinfo; 955 struct sctp_nxtinfo *nxtinfo; 956 957 if (((info != NULL) && (infolen == NULL)) | 958 ((info == NULL) && (infolen != NULL) && (*infolen != 0)) || 959 ((info != NULL) && (infotype == NULL))) { 960 errno = EINVAL; 961 return (-1); 962 } 963 if (infotype) { 964 *infotype = SCTP_RECVV_NOINFO; 965 } 966 msg.msg_name = from; 967 if (fromlen == NULL) { 968 msg.msg_namelen = 0; 969 } else { 970 msg.msg_namelen = *fromlen; 971 } 972 msg.msg_iov = (struct iovec *)iov; 973 msg.msg_iovlen = iovlen; 974 msg.msg_control = ctlbuf; 975 msg.msg_controllen = sizeof(ctlbuf); 976 errno = 0; 977 n = recvmsg(sd, &msg, *flags); 978 *flags = msg.msg_flags; 979 if ((n > 0) && 980 (msg.msg_controllen > 0) && 981 (infotype != NULL) && 982 (infolen != NULL) && 983 (*infolen > 0)) { 984 rcvinfo = NULL; 985 nxtinfo = NULL; 986 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) { 987 if (cmsg->cmsg_level != IPPROTO_SCTP) { 988 continue; 989 } 990 if (cmsg->cmsg_type == SCTP_RCVINFO) { 991 rcvinfo = (struct sctp_rcvinfo *)CMSG_DATA(cmsg); 992 } 993 if (cmsg->cmsg_type == SCTP_NXTINFO) { 994 nxtinfo = (struct sctp_nxtinfo *)CMSG_DATA(cmsg); 995 } 996 if (rcvinfo && nxtinfo) { 997 break; 998 } 999 } 1000 if (rcvinfo) { 1001 if (nxtinfo) { 1002 if (*infolen >= sizeof(struct sctp_recvv_rn)) { 1003 struct sctp_recvv_rn *rn_info; 1004 1005 rn_info = (struct sctp_recvv_rn *)info; 1006 rn_info->recvv_rcvinfo = *rcvinfo; 1007 rn_info->recvv_nxtinfo = *nxtinfo; 1008 *infolen = (socklen_t) sizeof(struct sctp_recvv_rn); 1009 *infotype = SCTP_RECVV_RN; 1010 } 1011 } else { 1012 if (*infolen >= sizeof(struct sctp_rcvinfo)) { 1013 memcpy(info, rcvinfo, sizeof(struct sctp_rcvinfo)); 1014 *infolen = (socklen_t) sizeof(struct sctp_rcvinfo); 1015 *infotype = SCTP_RECVV_RCVINFO; 1016 } 1017 } 1018 } else if (nxtinfo) { 1019 if (*infolen >= sizeof(struct sctp_rcvinfo)) { 1020 memcpy(info, nxtinfo, sizeof(struct sctp_nxtinfo)); 1021 *infolen = (socklen_t) sizeof(struct sctp_nxtinfo); 1022 *infotype = SCTP_RECVV_NXTINFO; 1023 } 1024 } 1025 } 1026 return (n); 1027} 1028 1029ssize_t 1030sctp_sendv(int sd, 1031 const struct iovec *iov, int iovcnt, 1032 struct sockaddr *addrs, int addrcnt, 1033 void *info, socklen_t infolen, unsigned int infotype, 1034 int flags) 1035{ 1036 ssize_t ret; 1037 int i; 1038 socklen_t addr_len; 1039 struct msghdr msg; 1040 in_port_t port; 1041 struct sctp_sendv_spa *spa_info; 1042 struct cmsghdr *cmsg; 1043 char *cmsgbuf; 1044 struct sockaddr *addr; 1045 struct sockaddr_in *addr_in; 1046 struct sockaddr_in6 *addr_in6; 1047 1048 if ((addrcnt < 0) || 1049 (iovcnt < 0) || 1050 ((addrs == NULL) && (addrcnt > 0)) || 1051 ((addrs != NULL) && (addrcnt == 0)) || 1052 ((iov == NULL) && (iovcnt > 0)) || 1053 ((iov != NULL) && (iovcnt == 0))) { 1054 errno = EINVAL; 1055 return (-1); 1056 } 1057 cmsgbuf = malloc(CMSG_SPACE(sizeof(struct sctp_sndinfo)) + 1058 CMSG_SPACE(sizeof(struct sctp_prinfo)) + 1059 CMSG_SPACE(sizeof(struct sctp_authinfo)) + 1060 addrcnt * CMSG_SPACE(sizeof(struct in6_addr))); 1061 if (cmsgbuf == NULL) { 1062 errno = ENOBUFS; 1063 return (-1); 1064 } 1065 msg.msg_control = cmsgbuf; 1066 msg.msg_controllen = 0; 1067 cmsg = (struct cmsghdr *)cmsgbuf; 1068 switch (infotype) { 1069 case SCTP_SENDV_NOINFO: 1070 if ((infolen != 0) || (info != NULL)) { 1071 free(cmsgbuf); 1072 errno = EINVAL; 1073 return (-1); 1074 } 1075 break; 1076 case SCTP_SENDV_SNDINFO: 1077 if ((info == NULL) || (infolen < sizeof(struct sctp_sndinfo))) { 1078 free(cmsgbuf); 1079 errno = EINVAL; 1080 return (-1); 1081 } 1082 cmsg->cmsg_level = IPPROTO_SCTP; 1083 cmsg->cmsg_type = SCTP_SNDINFO; 1084 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndinfo)); 1085 memcpy(CMSG_DATA(cmsg), info, sizeof(struct sctp_sndinfo)); 1086 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndinfo)); 1087 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_sndinfo))); 1088 break; 1089 case SCTP_SENDV_PRINFO: 1090 if ((info == NULL) || (infolen < sizeof(struct sctp_prinfo))) { 1091 free(cmsgbuf); 1092 errno = EINVAL; 1093 return (-1); 1094 } 1095 cmsg->cmsg_level = IPPROTO_SCTP; 1096 cmsg->cmsg_type = SCTP_PRINFO; 1097 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_prinfo)); 1098 memcpy(CMSG_DATA(cmsg), info, sizeof(struct sctp_prinfo)); 1099 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_prinfo)); 1100 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_prinfo))); 1101 break; 1102 case SCTP_SENDV_AUTHINFO: 1103 if ((info == NULL) || (infolen < sizeof(struct sctp_authinfo))) { 1104 free(cmsgbuf); 1105 errno = EINVAL; 1106 return (-1); 1107 } 1108 cmsg->cmsg_level = IPPROTO_SCTP; 1109 cmsg->cmsg_type = SCTP_AUTHINFO; 1110 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_authinfo)); 1111 memcpy(CMSG_DATA(cmsg), info, sizeof(struct sctp_authinfo)); 1112 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_authinfo)); 1113 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_authinfo))); 1114 break; 1115 case SCTP_SENDV_SPA: 1116 if ((info == NULL) || (infolen < sizeof(struct sctp_sendv_spa))) { 1117 free(cmsgbuf); 1118 errno = EINVAL; 1119 return (-1); 1120 } 1121 spa_info = (struct sctp_sendv_spa *)info; 1122 if (spa_info->sendv_flags & SCTP_SEND_SNDINFO_VALID) { 1123 cmsg->cmsg_level = IPPROTO_SCTP; 1124 cmsg->cmsg_type = SCTP_SNDINFO; 1125 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_sndinfo)); 1126 memcpy(CMSG_DATA(cmsg), &spa_info->sendv_sndinfo, sizeof(struct sctp_sndinfo)); 1127 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_sndinfo)); 1128 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_sndinfo))); 1129 } 1130 if (spa_info->sendv_flags & SCTP_SEND_PRINFO_VALID) { 1131 cmsg->cmsg_level = IPPROTO_SCTP; 1132 cmsg->cmsg_type = SCTP_PRINFO; 1133 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_prinfo)); 1134 memcpy(CMSG_DATA(cmsg), &spa_info->sendv_prinfo, sizeof(struct sctp_prinfo)); 1135 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_prinfo)); 1136 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_prinfo))); 1137 } 1138 if (spa_info->sendv_flags & SCTP_SEND_AUTHINFO_VALID) { 1139 cmsg->cmsg_level = IPPROTO_SCTP; 1140 cmsg->cmsg_type = SCTP_AUTHINFO; 1141 cmsg->cmsg_len = CMSG_LEN(sizeof(struct sctp_authinfo)); 1142 memcpy(CMSG_DATA(cmsg), &spa_info->sendv_authinfo, sizeof(struct sctp_authinfo)); 1143 msg.msg_controllen += CMSG_SPACE(sizeof(struct sctp_authinfo)); 1144 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct sctp_authinfo))); 1145 } 1146 break; 1147 default: 1148 free(cmsgbuf); 1149 errno = EINVAL; 1150 return (-1); 1151 } 1152 addr = addrs; 1153 msg.msg_name = NULL; 1154 msg.msg_namelen = 0; 1155 1156 for (i = 0; i < addrcnt; i++) { 1157 switch (addr->sa_family) { 1158 case AF_INET: 1159 addr_len = (socklen_t) sizeof(struct sockaddr_in); 1160 addr_in = (struct sockaddr_in *)addr; 1161 if (addr_in->sin_len != addr_len) { 1162 free(cmsgbuf); 1163 errno = EINVAL; 1164 return (-1); 1165 } 1166 if (i == 0) { 1167 port = addr_in->sin_port; 1168 } else { 1169 if (port == addr_in->sin_port) { 1170 cmsg->cmsg_level = IPPROTO_SCTP; 1171 cmsg->cmsg_type = SCTP_DSTADDRV4; 1172 cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_addr)); 1173 memcpy(CMSG_DATA(cmsg), &addr_in->sin_addr, sizeof(struct in_addr)); 1174 msg.msg_controllen += CMSG_SPACE(sizeof(struct in_addr)); 1175 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct in_addr))); 1176 } else { 1177 free(cmsgbuf); 1178 errno = EINVAL; 1179 return (-1); 1180 } 1181 } 1182 break; 1183 case AF_INET6: 1184 addr_len = (socklen_t) sizeof(struct sockaddr_in6); 1185 addr_in6 = (struct sockaddr_in6 *)addr; 1186 if (addr_in6->sin6_len != addr_len) { 1187 free(cmsgbuf); 1188 errno = EINVAL; 1189 return (-1); 1190 } 1191 if (i == 0) { 1192 port = addr_in6->sin6_port; 1193 } else { 1194 if (port == addr_in6->sin6_port) { 1195 cmsg->cmsg_level = IPPROTO_SCTP; 1196 cmsg->cmsg_type = SCTP_DSTADDRV6; 1197 cmsg->cmsg_len = CMSG_LEN(sizeof(struct in6_addr)); 1198 memcpy(CMSG_DATA(cmsg), &addr_in6->sin6_addr, sizeof(struct in6_addr)); 1199 msg.msg_controllen += CMSG_SPACE(sizeof(struct in6_addr)); 1200 cmsg = (struct cmsghdr *)((caddr_t)cmsg + CMSG_SPACE(sizeof(struct in6_addr))); 1201 } else { 1202 free(cmsgbuf); 1203 errno = EINVAL; 1204 return (-1); 1205 } 1206 } 1207 break; 1208 default: 1209 free(cmsgbuf); 1210 errno = EINVAL; 1211 return (-1); 1212 } 1213 if (i == 0) { 1214 msg.msg_name = addr; 1215 msg.msg_namelen = addr_len; 1216 } 1217 addr = (struct sockaddr *)((caddr_t)addr + addr_len); 1218 } 1219 if (msg.msg_controllen == 0) { 1220 msg.msg_control = NULL; 1221 } 1222 msg.msg_iov = (struct iovec *)iov; 1223 msg.msg_iovlen = iovcnt; 1224 msg.msg_flags = 0; 1225 ret = sendmsg(sd, &msg, flags); 1226 free(cmsgbuf); 1227 return (ret); 1228} 1229 1230 1231#if !defined(SYS_sctp_peeloff) && !defined(HAVE_SCTP_PEELOFF_SOCKOPT) 1232 1233int 1234sctp_peeloff(int sd, sctp_assoc_t assoc_id) 1235{ 1236 /* NOT supported, return invalid sd */ 1237 errno = ENOTSUP; 1238 return (-1); 1239} 1240 1241#endif 1242#if defined(SYS_sctp_peeloff) && !defined(HAVE_SCTP_PEELOFF_SOCKOPT) 1243int 1244sctp_peeloff(int sd, sctp_assoc_t assoc_id) 1245{ 1246 return (syscall(SYS_sctp_peeloff, sd, assoc_id)); 1247} 1248 1249#endif 1250 1251 1252#undef SCTP_CONTROL_VEC_SIZE_SND 1253#undef SCTP_CONTROL_VEC_SIZE_RCV 1254#undef SCTP_STACK_BUF_SIZE 1255