1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. 5 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. 6 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions are met: 10 * 11 * a) Redistributions of source code must retain the above copyright notice, 12 * this list of conditions and the following disclaimer. 13 * 14 * b) Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in 16 * the documentation and/or other materials provided with the distribution. 17 * 18 * c) Neither the name of Cisco Systems, Inc. nor the names of its 19 * contributors may be used to endorse or promote products derived 20 * from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 24 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 32 * THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 #include <netinet/sctp_os.h> 37 #ifdef INET6 38 #include <sys/proc.h> 39 #include <netinet/sctp_pcb.h> 40 #include <netinet/sctp_header.h> 41 #include <netinet/sctp_var.h> 42 #include <netinet6/sctp6_var.h> 43 #include <netinet/sctp_sysctl.h> 44 #include <netinet/sctp_output.h> 45 #include <netinet/sctp_uio.h> 46 #include <netinet/sctp_asconf.h> 47 #include <netinet/sctputil.h> 48 #include <netinet/sctp_indata.h> 49 #include <netinet/sctp_timer.h> 50 #include <netinet/sctp_auth.h> 51 #include <netinet/sctp_input.h> 52 #include <netinet/sctp_output.h> 53 #include <netinet/sctp_bsd_addr.h> 54 #include <netinet/sctp_crc32.h> 55 #include <netinet/icmp6.h> 56 #include <netinet/udp.h> 57 58 int 59 sctp6_input_with_port(struct mbuf **i_pak, int *offp, uint16_t port) 60 { 61 struct mbuf *m; 62 int iphlen; 63 uint32_t vrf_id; 64 uint8_t ecn_bits; 65 struct sockaddr_in6 src, dst; 66 struct ip6_hdr *ip6; 67 struct sctphdr *sh; 68 struct sctp_chunkhdr *ch; 69 int length, offset; 70 uint8_t compute_crc; 71 uint32_t mflowid; 72 uint8_t mflowtype; 73 uint16_t fibnum; 74 75 iphlen = *offp; 76 if (SCTP_GET_PKT_VRFID(*i_pak, vrf_id)) { 77 SCTP_RELEASE_PKT(*i_pak); 78 return (IPPROTO_DONE); 79 } 80 m = SCTP_HEADER_TO_CHAIN(*i_pak); 81 #ifdef SCTP_MBUF_LOGGING 82 /* Log in any input mbufs */ 83 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) { 84 sctp_log_mbc(m, SCTP_MBUF_INPUT); 85 } 86 #endif 87 #ifdef SCTP_PACKET_LOGGING 88 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LAST_PACKET_TRACING) { 89 sctp_packet_log(m); 90 } 91 #endif 92 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD, 93 "sctp6_input(): Packet of length %d received on %s with csum_flags 0x%b.\n", 94 m->m_pkthdr.len, 95 if_name(m->m_pkthdr.rcvif), 96 (int)m->m_pkthdr.csum_flags, CSUM_BITS); 97 mflowid = m->m_pkthdr.flowid; 98 mflowtype = M_HASHTYPE_GET(m); 99 fibnum = M_GETFIB(m); 100 SCTP_STAT_INCR(sctps_recvpackets); 101 SCTP_STAT_INCR_COUNTER64(sctps_inpackets); 102 /* Get IP, SCTP, and first chunk header together in the first mbuf. */ 103 offset = iphlen + sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr); 104 if (m->m_len < offset) { 105 m = m_pullup(m, offset); 106 if (m == NULL) { 107 SCTP_STAT_INCR(sctps_hdrops); 108 return (IPPROTO_DONE); 109 } 110 } 111 ip6 = mtod(m, struct ip6_hdr *); 112 sh = (struct sctphdr *)(mtod(m, caddr_t)+iphlen); 113 ch = (struct sctp_chunkhdr *)((caddr_t)sh + sizeof(struct sctphdr)); 114 offset -= sizeof(struct sctp_chunkhdr); 115 memset(&src, 0, sizeof(struct sockaddr_in6)); 116 src.sin6_family = AF_INET6; 117 src.sin6_len = sizeof(struct sockaddr_in6); 118 src.sin6_port = sh->src_port; 119 src.sin6_addr = ip6->ip6_src; 120 if (in6_setscope(&src.sin6_addr, m->m_pkthdr.rcvif, NULL) != 0) { 121 goto out; 122 } 123 memset(&dst, 0, sizeof(struct sockaddr_in6)); 124 dst.sin6_family = AF_INET6; 125 dst.sin6_len = sizeof(struct sockaddr_in6); 126 dst.sin6_port = sh->dest_port; 127 dst.sin6_addr = ip6->ip6_dst; 128 if (in6_setscope(&dst.sin6_addr, m->m_pkthdr.rcvif, NULL) != 0) { 129 goto out; 130 } 131 length = ntohs(ip6->ip6_plen) + iphlen; 132 /* Validate mbuf chain length with IP payload length. */ 133 if (SCTP_HEADER_LEN(m) != length) { 134 SCTPDBG(SCTP_DEBUG_INPUT1, 135 "sctp6_input() length:%d reported length:%d\n", length, SCTP_HEADER_LEN(m)); 136 SCTP_STAT_INCR(sctps_hdrops); 137 goto out; 138 } 139 if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) { 140 goto out; 141 } 142 ecn_bits = IPV6_TRAFFIC_CLASS(ip6); 143 if (m->m_pkthdr.csum_flags & CSUM_SCTP_VALID) { 144 SCTP_STAT_INCR(sctps_recvhwcrc); 145 compute_crc = 0; 146 } else { 147 SCTP_STAT_INCR(sctps_recvswcrc); 148 compute_crc = 1; 149 } 150 sctp_common_input_processing(&m, iphlen, offset, length, 151 (struct sockaddr *)&src, 152 (struct sockaddr *)&dst, 153 sh, ch, 154 compute_crc, 155 ecn_bits, 156 mflowtype, mflowid, fibnum, 157 vrf_id, port); 158 out: 159 if (m) { 160 sctp_m_freem(m); 161 } 162 return (IPPROTO_DONE); 163 } 164 165 int 166 sctp6_input(struct mbuf **i_pak, int *offp, int proto SCTP_UNUSED) 167 { 168 return (sctp6_input_with_port(i_pak, offp, 0)); 169 } 170 171 void 172 sctp6_notify(struct sctp_inpcb *inp, 173 struct sctp_tcb *stcb, 174 struct sctp_nets *net, 175 uint8_t icmp6_type, 176 uint8_t icmp6_code, 177 uint32_t next_mtu) 178 { 179 int timer_stopped; 180 181 switch (icmp6_type) { 182 case ICMP6_DST_UNREACH: 183 if ((icmp6_code == ICMP6_DST_UNREACH_NOROUTE) || 184 (icmp6_code == ICMP6_DST_UNREACH_ADMIN) || 185 (icmp6_code == ICMP6_DST_UNREACH_BEYONDSCOPE) || 186 (icmp6_code == ICMP6_DST_UNREACH_ADDR)) { 187 /* Mark the net unreachable. */ 188 if (net->dest_state & SCTP_ADDR_REACHABLE) { 189 /* Ok that destination is not reachable */ 190 net->dest_state &= ~SCTP_ADDR_REACHABLE; 191 net->dest_state &= ~SCTP_ADDR_PF; 192 sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN, 193 stcb, 0, (void *)net, SCTP_SO_NOT_LOCKED); 194 } 195 } 196 SCTP_TCB_UNLOCK(stcb); 197 break; 198 case ICMP6_PARAM_PROB: 199 /* Treat it like an ABORT. */ 200 if (icmp6_code == ICMP6_PARAMPROB_NEXTHEADER) { 201 sctp_abort_notification(stcb, true, false, 0, NULL, SCTP_SO_NOT_LOCKED); 202 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, 203 SCTP_FROM_SCTP_USRREQ + SCTP_LOC_2); 204 } else { 205 SCTP_TCB_UNLOCK(stcb); 206 } 207 break; 208 case ICMP6_PACKET_TOO_BIG: 209 if (net->dest_state & SCTP_ADDR_NO_PMTUD) { 210 SCTP_TCB_UNLOCK(stcb); 211 break; 212 } 213 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) { 214 timer_stopped = 1; 215 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net, 216 SCTP_FROM_SCTP_USRREQ + SCTP_LOC_1); 217 } else { 218 timer_stopped = 0; 219 } 220 /* Update the path MTU. */ 221 if (net->port) { 222 next_mtu -= sizeof(struct udphdr); 223 } 224 if (net->mtu > next_mtu) { 225 net->mtu = next_mtu; 226 if (net->port) { 227 sctp_hc_set_mtu(&net->ro._l_addr, inp->fibnum, next_mtu + sizeof(struct udphdr)); 228 } else { 229 sctp_hc_set_mtu(&net->ro._l_addr, inp->fibnum, next_mtu); 230 } 231 } 232 /* Update the association MTU */ 233 if (stcb->asoc.smallest_mtu > next_mtu) { 234 sctp_pathmtu_adjustment(stcb, next_mtu, true); 235 } 236 /* Finally, start the PMTU timer if it was running before. */ 237 if (timer_stopped) { 238 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net); 239 } 240 SCTP_TCB_UNLOCK(stcb); 241 break; 242 default: 243 SCTP_TCB_UNLOCK(stcb); 244 break; 245 } 246 } 247 248 void 249 sctp6_ctlinput(struct ip6ctlparam *ip6cp) 250 { 251 struct sctp_inpcb *inp; 252 struct sctp_tcb *stcb; 253 struct sctp_nets *net; 254 struct sctphdr sh; 255 struct sockaddr_in6 src, dst; 256 257 if (icmp6_errmap(ip6cp->ip6c_icmp6) == 0) { 258 return; 259 } 260 261 /* 262 * Check if we can safely examine the ports and the verification tag 263 * of the SCTP common header. 264 */ 265 if (ip6cp->ip6c_m->m_pkthdr.len < 266 (int32_t)(ip6cp->ip6c_off + offsetof(struct sctphdr, checksum))) { 267 return; 268 } 269 270 /* Copy out the port numbers and the verification tag. */ 271 memset(&sh, 0, sizeof(sh)); 272 m_copydata(ip6cp->ip6c_m, 273 ip6cp->ip6c_off, 274 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t), 275 (caddr_t)&sh); 276 memset(&src, 0, sizeof(struct sockaddr_in6)); 277 src.sin6_family = AF_INET6; 278 src.sin6_len = sizeof(struct sockaddr_in6); 279 src.sin6_port = sh.src_port; 280 src.sin6_addr = ip6cp->ip6c_ip6->ip6_src; 281 if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) { 282 return; 283 } 284 memset(&dst, 0, sizeof(struct sockaddr_in6)); 285 dst.sin6_family = AF_INET6; 286 dst.sin6_len = sizeof(struct sockaddr_in6); 287 dst.sin6_port = sh.dest_port; 288 dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst; 289 if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) { 290 return; 291 } 292 inp = NULL; 293 net = NULL; 294 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst, 295 (struct sockaddr *)&src, 296 &inp, &net, 1, SCTP_DEFAULT_VRFID); 297 if ((stcb != NULL) && 298 (net != NULL) && 299 (inp != NULL)) { 300 /* Check the verification tag */ 301 if (ntohl(sh.v_tag) != 0) { 302 /* 303 * This must be the verification tag used for 304 * sending out packets. We don't consider packets 305 * reflecting the verification tag. 306 */ 307 if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) { 308 SCTP_TCB_UNLOCK(stcb); 309 return; 310 } 311 } else { 312 if (ip6cp->ip6c_m->m_pkthdr.len >= 313 ip6cp->ip6c_off + sizeof(struct sctphdr) + 314 sizeof(struct sctp_chunkhdr) + 315 offsetof(struct sctp_init, a_rwnd)) { 316 /* 317 * In this case we can check if we got an 318 * INIT chunk and if the initiate tag 319 * matches. 320 */ 321 uint32_t initiate_tag; 322 uint8_t chunk_type; 323 324 m_copydata(ip6cp->ip6c_m, 325 ip6cp->ip6c_off + 326 sizeof(struct sctphdr), 327 sizeof(uint8_t), 328 (caddr_t)&chunk_type); 329 m_copydata(ip6cp->ip6c_m, 330 ip6cp->ip6c_off + 331 sizeof(struct sctphdr) + 332 sizeof(struct sctp_chunkhdr), 333 sizeof(uint32_t), 334 (caddr_t)&initiate_tag); 335 if ((chunk_type != SCTP_INITIATION) || 336 (ntohl(initiate_tag) != stcb->asoc.my_vtag)) { 337 SCTP_TCB_UNLOCK(stcb); 338 return; 339 } 340 } else { 341 SCTP_TCB_UNLOCK(stcb); 342 return; 343 } 344 } 345 sctp6_notify(inp, stcb, net, 346 ip6cp->ip6c_icmp6->icmp6_type, 347 ip6cp->ip6c_icmp6->icmp6_code, 348 ntohl(ip6cp->ip6c_icmp6->icmp6_mtu)); 349 } else { 350 if ((stcb == NULL) && (inp != NULL)) { 351 /* reduce inp's ref-count */ 352 SCTP_INP_WLOCK(inp); 353 SCTP_INP_DECR_REF(inp); 354 SCTP_INP_WUNLOCK(inp); 355 } 356 if (stcb) { 357 SCTP_TCB_UNLOCK(stcb); 358 } 359 } 360 } 361 362 /* 363 * this routine can probably be collasped into the one in sctp_userreq.c 364 * since they do the same thing and now we lookup with a sockaddr 365 */ 366 static int 367 sctp6_getcred(SYSCTL_HANDLER_ARGS) 368 { 369 struct xucred xuc; 370 struct sockaddr_in6 addrs[2]; 371 struct sctp_inpcb *inp; 372 struct sctp_nets *net; 373 struct sctp_tcb *stcb; 374 int error; 375 uint32_t vrf_id; 376 377 vrf_id = SCTP_DEFAULT_VRFID; 378 379 error = priv_check(req->td, PRIV_NETINET_GETCRED); 380 if (error) 381 return (error); 382 383 if (req->newlen != sizeof(addrs)) { 384 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 385 return (EINVAL); 386 } 387 if (req->oldlen != sizeof(struct ucred)) { 388 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 389 return (EINVAL); 390 } 391 error = SYSCTL_IN(req, addrs, sizeof(addrs)); 392 if (error) 393 return (error); 394 395 stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[1]), 396 sin6tosa(&addrs[0]), 397 &inp, &net, 1, vrf_id); 398 if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) { 399 if ((inp != NULL) && (stcb == NULL)) { 400 /* reduce ref-count */ 401 SCTP_INP_WLOCK(inp); 402 SCTP_INP_DECR_REF(inp); 403 goto cred_can_cont; 404 } 405 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 406 error = ENOENT; 407 goto out; 408 } 409 SCTP_TCB_UNLOCK(stcb); 410 /* 411 * We use the write lock here, only since in the error leg we need 412 * it. If we used RLOCK, then we would have to 413 * wlock/decr/unlock/rlock. Which in theory could create a hole. 414 * Better to use higher wlock. 415 */ 416 SCTP_INP_WLOCK(inp); 417 cred_can_cont: 418 error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket); 419 if (error) { 420 SCTP_INP_WUNLOCK(inp); 421 goto out; 422 } 423 cru2x(inp->sctp_socket->so_cred, &xuc); 424 SCTP_INP_WUNLOCK(inp); 425 error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred)); 426 out: 427 return (error); 428 } 429 430 SYSCTL_PROC(_net_inet6_sctp6, OID_AUTO, getcred, 431 CTLTYPE_OPAQUE | CTLFLAG_RW | CTLFLAG_NEEDGIANT, 432 0, 0, sctp6_getcred, "S,ucred", 433 "Get the ucred of a SCTP6 connection"); 434 435 static int 436 sctp6_attach(struct socket *so, int proto SCTP_UNUSED, struct thread *p SCTP_UNUSED) 437 { 438 int error; 439 struct sctp_inpcb *inp; 440 uint32_t vrf_id = SCTP_DEFAULT_VRFID; 441 442 inp = (struct sctp_inpcb *)so->so_pcb; 443 if (inp != NULL) { 444 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 445 return (EINVAL); 446 } 447 448 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 449 error = SCTP_SORESERVE(so, SCTP_BASE_SYSCTL(sctp_sendspace), SCTP_BASE_SYSCTL(sctp_recvspace)); 450 if (error) 451 return (error); 452 } 453 error = sctp_inpcb_alloc(so, vrf_id); 454 if (error) 455 return (error); 456 inp = (struct sctp_inpcb *)so->so_pcb; 457 SCTP_INP_WLOCK(inp); 458 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUND_V6; /* I'm v6! */ 459 460 inp->ip_inp.inp.inp_vflag |= INP_IPV6; 461 inp->ip_inp.inp.in6p_hops = -1; /* use kernel default */ 462 inp->ip_inp.inp.in6p_cksum = -1; /* just to be sure */ 463 #ifdef INET 464 /* 465 * XXX: ugly!! IPv4 TTL initialization is necessary for an IPv6 466 * socket as well, because the socket may be bound to an IPv6 467 * wildcard address, which may match an IPv4-mapped IPv6 address. 468 */ 469 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl); 470 #endif 471 SCTP_INP_WUNLOCK(inp); 472 return (0); 473 } 474 475 static int 476 sctp6_bind(struct socket *so, struct sockaddr *addr, struct thread *p) 477 { 478 struct sctp_inpcb *inp; 479 int error; 480 u_char vflagsav; 481 482 inp = (struct sctp_inpcb *)so->so_pcb; 483 if (inp == NULL) { 484 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 485 return (EINVAL); 486 } 487 488 if (addr) { 489 switch (addr->sa_family) { 490 #ifdef INET 491 case AF_INET: 492 if (addr->sa_len != sizeof(struct sockaddr_in)) { 493 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 494 return (EINVAL); 495 } 496 break; 497 #endif 498 #ifdef INET6 499 case AF_INET6: 500 if (addr->sa_len != sizeof(struct sockaddr_in6)) { 501 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 502 return (EINVAL); 503 } 504 break; 505 #endif 506 default: 507 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 508 return (EINVAL); 509 } 510 } 511 vflagsav = inp->ip_inp.inp.inp_vflag; 512 inp->ip_inp.inp.inp_vflag &= ~INP_IPV4; 513 inp->ip_inp.inp.inp_vflag |= INP_IPV6; 514 if ((addr != NULL) && (SCTP_IPV6_V6ONLY(inp) == 0)) { 515 switch (addr->sa_family) { 516 #ifdef INET 517 case AF_INET: 518 /* binding v4 addr to v6 socket, so reset flags */ 519 inp->ip_inp.inp.inp_vflag |= INP_IPV4; 520 inp->ip_inp.inp.inp_vflag &= ~INP_IPV6; 521 break; 522 #endif 523 #ifdef INET6 524 case AF_INET6: 525 { 526 struct sockaddr_in6 *sin6_p; 527 528 sin6_p = (struct sockaddr_in6 *)addr; 529 530 if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr)) { 531 inp->ip_inp.inp.inp_vflag |= INP_IPV4; 532 } 533 #ifdef INET 534 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { 535 struct sockaddr_in sin; 536 537 in6_sin6_2_sin(&sin, sin6_p); 538 inp->ip_inp.inp.inp_vflag |= INP_IPV4; 539 inp->ip_inp.inp.inp_vflag &= ~INP_IPV6; 540 error = sctp_inpcb_bind(so, (struct sockaddr *)&sin, NULL, p); 541 goto out; 542 } 543 #endif 544 break; 545 } 546 #endif 547 default: 548 break; 549 } 550 } else if (addr != NULL) { 551 struct sockaddr_in6 *sin6_p; 552 553 /* IPV6_V6ONLY socket */ 554 #ifdef INET 555 if (addr->sa_family == AF_INET) { 556 /* can't bind v4 addr to v6 only socket! */ 557 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 558 error = EINVAL; 559 goto out; 560 } 561 #endif 562 sin6_p = (struct sockaddr_in6 *)addr; 563 564 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { 565 /* can't bind v4-mapped addrs either! */ 566 /* NOTE: we don't support SIIT */ 567 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 568 error = EINVAL; 569 goto out; 570 } 571 } 572 error = sctp_inpcb_bind(so, addr, NULL, p); 573 out: 574 if (error != 0) 575 inp->ip_inp.inp.inp_vflag = vflagsav; 576 return (error); 577 } 578 579 static void 580 sctp6_close(struct socket *so) 581 { 582 sctp_close(so); 583 } 584 585 /* This could be made common with sctp_detach() since they are identical */ 586 587 int 588 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, 589 struct mbuf *control, struct thread *p); 590 591 static int 592 sctp6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, 593 struct mbuf *control, struct thread *p) 594 { 595 struct sctp_inpcb *inp; 596 597 #ifdef INET 598 struct sockaddr_in6 *sin6; 599 #endif /* INET */ 600 /* No SPL needed since sctp_output does this */ 601 602 inp = (struct sctp_inpcb *)so->so_pcb; 603 if (inp == NULL) { 604 if (control) { 605 SCTP_RELEASE_PKT(control); 606 control = NULL; 607 } 608 SCTP_RELEASE_PKT(m); 609 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 610 return (EINVAL); 611 } 612 /* 613 * For the TCP model we may get a NULL addr, if we are a connected 614 * socket thats ok. 615 */ 616 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) && 617 (addr == NULL)) { 618 goto connected_type; 619 } 620 if (addr == NULL) { 621 SCTP_RELEASE_PKT(m); 622 if (control) { 623 SCTP_RELEASE_PKT(control); 624 control = NULL; 625 } 626 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EDESTADDRREQ); 627 return (EDESTADDRREQ); 628 } 629 switch (addr->sa_family) { 630 #ifdef INET 631 case AF_INET: 632 if (addr->sa_len != sizeof(struct sockaddr_in)) { 633 if (control) { 634 SCTP_RELEASE_PKT(control); 635 control = NULL; 636 } 637 SCTP_RELEASE_PKT(m); 638 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 639 return (EINVAL); 640 } 641 break; 642 #endif 643 #ifdef INET6 644 case AF_INET6: 645 if (addr->sa_len != sizeof(struct sockaddr_in6)) { 646 if (control) { 647 SCTP_RELEASE_PKT(control); 648 control = NULL; 649 } 650 SCTP_RELEASE_PKT(m); 651 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 652 return (EINVAL); 653 } 654 break; 655 #endif 656 default: 657 if (control) { 658 SCTP_RELEASE_PKT(control); 659 control = NULL; 660 } 661 SCTP_RELEASE_PKT(m); 662 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 663 return (EINVAL); 664 } 665 #ifdef INET 666 sin6 = (struct sockaddr_in6 *)addr; 667 if (SCTP_IPV6_V6ONLY(inp)) { 668 /* 669 * if IPV6_V6ONLY flag, we discard datagrams destined to a 670 * v4 addr or v4-mapped addr 671 */ 672 if (addr->sa_family == AF_INET) { 673 if (control) { 674 SCTP_RELEASE_PKT(control); 675 control = NULL; 676 } 677 SCTP_RELEASE_PKT(m); 678 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 679 return (EINVAL); 680 } 681 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 682 if (control) { 683 SCTP_RELEASE_PKT(control); 684 control = NULL; 685 } 686 SCTP_RELEASE_PKT(m); 687 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 688 return (EINVAL); 689 } 690 } 691 if ((addr->sa_family == AF_INET6) && 692 IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 693 struct sockaddr_in sin; 694 695 /* convert v4-mapped into v4 addr and send */ 696 in6_sin6_2_sin(&sin, sin6); 697 return (sctp_sendm(so, flags, m, (struct sockaddr *)&sin, control, p)); 698 } 699 #endif /* INET */ 700 connected_type: 701 /* now what about control */ 702 if (control) { 703 if (inp->control) { 704 SCTP_PRINTF("huh? control set?\n"); 705 SCTP_RELEASE_PKT(inp->control); 706 inp->control = NULL; 707 } 708 inp->control = control; 709 } 710 /* Place the data */ 711 if (inp->pkt) { 712 SCTP_BUF_NEXT(inp->pkt_last) = m; 713 inp->pkt_last = m; 714 } else { 715 inp->pkt_last = inp->pkt = m; 716 } 717 if ( 718 /* FreeBSD and MacOSX uses a flag passed */ 719 ((flags & PRUS_MORETOCOME) == 0) 720 ) { 721 /* 722 * note with the current version this code will only be used 723 * by OpenBSD, NetBSD and FreeBSD have methods for 724 * re-defining sosend() to use sctp_sosend(). One can 725 * optionaly switch back to this code (by changing back the 726 * defininitions but this is not advisable. 727 */ 728 struct epoch_tracker et; 729 int ret; 730 731 NET_EPOCH_ENTER(et); 732 ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags); 733 NET_EPOCH_EXIT(et); 734 inp->pkt = NULL; 735 inp->control = NULL; 736 return (ret); 737 } else { 738 return (0); 739 } 740 } 741 742 static int 743 sctp6_connect(struct socket *so, struct sockaddr *addr, struct thread *p) 744 { 745 struct epoch_tracker et; 746 uint32_t vrf_id; 747 int error = 0; 748 struct sctp_inpcb *inp; 749 struct sctp_tcb *stcb; 750 #ifdef INET 751 struct sockaddr_in6 *sin6; 752 union sctp_sockstore store; 753 #endif 754 755 inp = (struct sctp_inpcb *)so->so_pcb; 756 if (inp == NULL) { 757 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 758 return (ECONNRESET); /* I made the same as TCP since we are 759 * not setup? */ 760 } 761 if (addr == NULL) { 762 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 763 return (EINVAL); 764 } 765 switch (addr->sa_family) { 766 #ifdef INET 767 case AF_INET: 768 if (addr->sa_len != sizeof(struct sockaddr_in)) { 769 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 770 return (EINVAL); 771 } 772 break; 773 #endif 774 #ifdef INET6 775 case AF_INET6: 776 if (addr->sa_len != sizeof(struct sockaddr_in6)) { 777 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 778 return (EINVAL); 779 } 780 break; 781 #endif 782 default: 783 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 784 return (EINVAL); 785 } 786 787 vrf_id = inp->def_vrf_id; 788 SCTP_ASOC_CREATE_LOCK(inp); 789 SCTP_INP_RLOCK(inp); 790 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 791 SCTP_PCB_FLAGS_UNBOUND) { 792 /* Bind a ephemeral port */ 793 SCTP_INP_RUNLOCK(inp); 794 error = sctp6_bind(so, NULL, p); 795 if (error) { 796 SCTP_ASOC_CREATE_UNLOCK(inp); 797 798 return (error); 799 } 800 SCTP_INP_RLOCK(inp); 801 } 802 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && 803 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) { 804 /* We are already connected AND the TCP model */ 805 SCTP_INP_RUNLOCK(inp); 806 SCTP_ASOC_CREATE_UNLOCK(inp); 807 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EADDRINUSE); 808 return (EADDRINUSE); 809 } 810 #ifdef INET 811 sin6 = (struct sockaddr_in6 *)addr; 812 if (SCTP_IPV6_V6ONLY(inp)) { 813 /* 814 * if IPV6_V6ONLY flag, ignore connections destined to a v4 815 * addr or v4-mapped addr 816 */ 817 if (addr->sa_family == AF_INET) { 818 SCTP_INP_RUNLOCK(inp); 819 SCTP_ASOC_CREATE_UNLOCK(inp); 820 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 821 return (EINVAL); 822 } 823 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 824 SCTP_INP_RUNLOCK(inp); 825 SCTP_ASOC_CREATE_UNLOCK(inp); 826 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 827 return (EINVAL); 828 } 829 } 830 if ((addr->sa_family == AF_INET6) && 831 IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 832 /* convert v4-mapped into v4 addr */ 833 in6_sin6_2_sin(&store.sin, sin6); 834 addr = &store.sa; 835 } 836 #endif /* INET */ 837 /* Now do we connect? */ 838 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 839 stcb = LIST_FIRST(&inp->sctp_asoc_list); 840 if (stcb) { 841 SCTP_TCB_LOCK(stcb); 842 } 843 SCTP_INP_RUNLOCK(inp); 844 } else { 845 SCTP_INP_RUNLOCK(inp); 846 SCTP_INP_WLOCK(inp); 847 SCTP_INP_INCR_REF(inp); 848 SCTP_INP_WUNLOCK(inp); 849 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL); 850 if (stcb == NULL) { 851 SCTP_INP_WLOCK(inp); 852 SCTP_INP_DECR_REF(inp); 853 SCTP_INP_WUNLOCK(inp); 854 } 855 } 856 857 if (stcb != NULL) { 858 /* Already have or am bring up an association */ 859 SCTP_ASOC_CREATE_UNLOCK(inp); 860 SCTP_TCB_UNLOCK(stcb); 861 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EALREADY); 862 return (EALREADY); 863 } 864 /* We are GOOD to go */ 865 stcb = sctp_aloc_assoc_connected(inp, addr, &error, 0, 0, vrf_id, 866 inp->sctp_ep.pre_open_stream_count, 867 inp->sctp_ep.port, p, 868 SCTP_INITIALIZE_AUTH_PARAMS); 869 SCTP_ASOC_CREATE_UNLOCK(inp); 870 if (stcb == NULL) { 871 /* Gak! no memory */ 872 return (error); 873 } 874 SCTP_SET_STATE(stcb, SCTP_STATE_COOKIE_WAIT); 875 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); 876 NET_EPOCH_ENTER(et); 877 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED); 878 SCTP_TCB_UNLOCK(stcb); 879 NET_EPOCH_EXIT(et); 880 return (error); 881 } 882 883 static int 884 sctp6_getaddr(struct socket *so, struct sockaddr **addr) 885 { 886 struct sockaddr_in6 *sin6; 887 struct sctp_inpcb *inp; 888 uint32_t vrf_id; 889 struct sctp_ifa *sctp_ifa; 890 891 int error; 892 893 /* 894 * Do the malloc first in case it blocks. 895 */ 896 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof(*sin6)); 897 if (sin6 == NULL) 898 return (ENOMEM); 899 sin6->sin6_family = AF_INET6; 900 sin6->sin6_len = sizeof(*sin6); 901 902 inp = (struct sctp_inpcb *)so->so_pcb; 903 if (inp == NULL) { 904 SCTP_FREE_SONAME(sin6); 905 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 906 return (ECONNRESET); 907 } 908 SCTP_INP_RLOCK(inp); 909 sin6->sin6_port = inp->sctp_lport; 910 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 911 /* For the bound all case you get back 0 */ 912 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 913 struct sctp_tcb *stcb; 914 struct sockaddr_in6 *sin_a6; 915 struct sctp_nets *net; 916 int fnd; 917 918 stcb = LIST_FIRST(&inp->sctp_asoc_list); 919 if (stcb == NULL) { 920 SCTP_INP_RUNLOCK(inp); 921 SCTP_FREE_SONAME(sin6); 922 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 923 return (ENOENT); 924 } 925 fnd = 0; 926 sin_a6 = NULL; 927 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 928 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr; 929 if (sin_a6 == NULL) 930 /* this will make coverity happy */ 931 continue; 932 933 if (sin_a6->sin6_family == AF_INET6) { 934 fnd = 1; 935 break; 936 } 937 } 938 if ((!fnd) || (sin_a6 == NULL)) { 939 /* punt */ 940 SCTP_INP_RUNLOCK(inp); 941 SCTP_FREE_SONAME(sin6); 942 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 943 return (ENOENT); 944 } 945 vrf_id = inp->def_vrf_id; 946 sctp_ifa = sctp_source_address_selection(inp, stcb, (sctp_route_t *)&net->ro, net, 0, vrf_id); 947 if (sctp_ifa) { 948 sin6->sin6_addr = sctp_ifa->address.sin6.sin6_addr; 949 } 950 } else { 951 /* For the bound all case you get back 0 */ 952 memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr)); 953 } 954 } else { 955 /* Take the first IPv6 address in the list */ 956 struct sctp_laddr *laddr; 957 int fnd = 0; 958 959 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { 960 if (laddr->ifa->address.sa.sa_family == AF_INET6) { 961 struct sockaddr_in6 *sin_a; 962 963 sin_a = &laddr->ifa->address.sin6; 964 sin6->sin6_addr = sin_a->sin6_addr; 965 fnd = 1; 966 break; 967 } 968 } 969 if (!fnd) { 970 SCTP_FREE_SONAME(sin6); 971 SCTP_INP_RUNLOCK(inp); 972 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 973 return (ENOENT); 974 } 975 } 976 SCTP_INP_RUNLOCK(inp); 977 /* Scoping things for v6 */ 978 if ((error = sa6_recoverscope(sin6)) != 0) { 979 SCTP_FREE_SONAME(sin6); 980 return (error); 981 } 982 (*addr) = (struct sockaddr *)sin6; 983 return (0); 984 } 985 986 static int 987 sctp6_peeraddr(struct socket *so, struct sockaddr **addr) 988 { 989 struct sockaddr_in6 *sin6; 990 int fnd; 991 struct sockaddr_in6 *sin_a6; 992 struct sctp_inpcb *inp; 993 struct sctp_tcb *stcb; 994 struct sctp_nets *net; 995 int error; 996 997 /* Do the malloc first in case it blocks. */ 998 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 999 if (sin6 == NULL) 1000 return (ENOMEM); 1001 sin6->sin6_family = AF_INET6; 1002 sin6->sin6_len = sizeof(*sin6); 1003 1004 inp = (struct sctp_inpcb *)so->so_pcb; 1005 if ((inp == NULL) || 1006 ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) { 1007 /* UDP type and listeners will drop out here */ 1008 SCTP_FREE_SONAME(sin6); 1009 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOTCONN); 1010 return (ENOTCONN); 1011 } 1012 SCTP_INP_RLOCK(inp); 1013 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1014 if (stcb) { 1015 SCTP_TCB_LOCK(stcb); 1016 } 1017 SCTP_INP_RUNLOCK(inp); 1018 if (stcb == NULL) { 1019 SCTP_FREE_SONAME(sin6); 1020 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 1021 return (ECONNRESET); 1022 } 1023 fnd = 0; 1024 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1025 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr; 1026 if (sin_a6->sin6_family == AF_INET6) { 1027 fnd = 1; 1028 sin6->sin6_port = stcb->rport; 1029 sin6->sin6_addr = sin_a6->sin6_addr; 1030 break; 1031 } 1032 } 1033 SCTP_TCB_UNLOCK(stcb); 1034 if (!fnd) { 1035 /* No IPv4 address */ 1036 SCTP_FREE_SONAME(sin6); 1037 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 1038 return (ENOENT); 1039 } 1040 if ((error = sa6_recoverscope(sin6)) != 0) { 1041 SCTP_FREE_SONAME(sin6); 1042 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, error); 1043 return (error); 1044 } 1045 *addr = (struct sockaddr *)sin6; 1046 return (0); 1047 } 1048 1049 static int 1050 sctp6_in6getaddr(struct socket *so, struct sockaddr **nam) 1051 { 1052 struct inpcb *inp = sotoinpcb(so); 1053 int error; 1054 1055 if (inp == NULL) { 1056 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1057 return (EINVAL); 1058 } 1059 1060 /* allow v6 addresses precedence */ 1061 error = sctp6_getaddr(so, nam); 1062 #ifdef INET 1063 if (error) { 1064 struct sockaddr_in6 *sin6; 1065 1066 /* try v4 next if v6 failed */ 1067 error = sctp_ingetaddr(so, nam); 1068 if (error) { 1069 return (error); 1070 } 1071 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 1072 if (sin6 == NULL) { 1073 SCTP_FREE_SONAME(*nam); 1074 return (ENOMEM); 1075 } 1076 in6_sin_2_v4mapsin6((struct sockaddr_in *)*nam, sin6); 1077 SCTP_FREE_SONAME(*nam); 1078 *nam = (struct sockaddr *)sin6; 1079 } 1080 #endif 1081 return (error); 1082 } 1083 1084 static int 1085 sctp6_getpeeraddr(struct socket *so, struct sockaddr **nam) 1086 { 1087 struct inpcb *inp = sotoinpcb(so); 1088 int error; 1089 1090 if (inp == NULL) { 1091 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1092 return (EINVAL); 1093 } 1094 1095 /* allow v6 addresses precedence */ 1096 error = sctp6_peeraddr(so, nam); 1097 #ifdef INET 1098 if (error) { 1099 struct sockaddr_in6 *sin6; 1100 1101 /* try v4 next if v6 failed */ 1102 error = sctp_peeraddr(so, nam); 1103 if (error) { 1104 return (error); 1105 } 1106 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 1107 if (sin6 == NULL) { 1108 SCTP_FREE_SONAME(*nam); 1109 return (ENOMEM); 1110 } 1111 in6_sin_2_v4mapsin6((struct sockaddr_in *)*nam, sin6); 1112 SCTP_FREE_SONAME(*nam); 1113 *nam = (struct sockaddr *)sin6; 1114 } 1115 #endif 1116 return (error); 1117 } 1118 1119 #define SCTP6_PROTOSW \ 1120 .pr_protocol = IPPROTO_SCTP, \ 1121 .pr_ctloutput = sctp_ctloutput, \ 1122 .pr_abort = sctp_abort, \ 1123 .pr_accept = sctp_accept, \ 1124 .pr_attach = sctp6_attach, \ 1125 .pr_bind = sctp6_bind, \ 1126 .pr_connect = sctp6_connect, \ 1127 .pr_control = in6_control, \ 1128 .pr_close = sctp6_close, \ 1129 .pr_detach = sctp6_close, \ 1130 .pr_sopoll = sopoll_generic, \ 1131 .pr_flush = sctp_flush, \ 1132 .pr_disconnect = sctp_disconnect, \ 1133 .pr_listen = sctp_listen, \ 1134 .pr_peeraddr = sctp6_getpeeraddr, \ 1135 .pr_send = sctp6_send, \ 1136 .pr_shutdown = sctp_shutdown, \ 1137 .pr_sockaddr = sctp6_in6getaddr, \ 1138 .pr_sosend = sctp_sosend, \ 1139 .pr_soreceive = sctp_soreceive 1140 1141 struct protosw sctp6_seqpacket_protosw = { 1142 .pr_type = SOCK_SEQPACKET, 1143 .pr_flags = PR_WANTRCVD, 1144 SCTP6_PROTOSW 1145 }; 1146 1147 struct protosw sctp6_stream_protosw = { 1148 .pr_type = SOCK_STREAM, 1149 .pr_flags = PR_CONNREQUIRED | PR_WANTRCVD, 1150 SCTP6_PROTOSW 1151 }; 1152 #endif 1153