1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. 5 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. 6 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions are met: 10 * 11 * a) Redistributions of source code must retain the above copyright notice, 12 * this list of conditions and the following disclaimer. 13 * 14 * b) Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in 16 * the documentation and/or other materials provided with the distribution. 17 * 18 * c) Neither the name of Cisco Systems, Inc. nor the names of its 19 * contributors may be used to endorse or promote products derived 20 * from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 24 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 32 * THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 #include <netinet/sctp_os.h> 39 #ifdef INET6 40 #include <sys/proc.h> 41 #include <netinet/sctp_pcb.h> 42 #include <netinet/sctp_header.h> 43 #include <netinet/sctp_var.h> 44 #include <netinet6/sctp6_var.h> 45 #include <netinet/sctp_sysctl.h> 46 #include <netinet/sctp_output.h> 47 #include <netinet/sctp_uio.h> 48 #include <netinet/sctp_asconf.h> 49 #include <netinet/sctputil.h> 50 #include <netinet/sctp_indata.h> 51 #include <netinet/sctp_timer.h> 52 #include <netinet/sctp_auth.h> 53 #include <netinet/sctp_input.h> 54 #include <netinet/sctp_output.h> 55 #include <netinet/sctp_bsd_addr.h> 56 #include <netinet/sctp_crc32.h> 57 #include <netinet/icmp6.h> 58 #include <netinet/udp.h> 59 60 int 61 sctp6_input_with_port(struct mbuf **i_pak, int *offp, uint16_t port) 62 { 63 struct mbuf *m; 64 int iphlen; 65 uint32_t vrf_id; 66 uint8_t ecn_bits; 67 struct sockaddr_in6 src, dst; 68 struct ip6_hdr *ip6; 69 struct sctphdr *sh; 70 struct sctp_chunkhdr *ch; 71 int length, offset; 72 uint8_t compute_crc; 73 uint32_t mflowid; 74 uint8_t mflowtype; 75 uint16_t fibnum; 76 77 iphlen = *offp; 78 if (SCTP_GET_PKT_VRFID(*i_pak, vrf_id)) { 79 SCTP_RELEASE_PKT(*i_pak); 80 return (IPPROTO_DONE); 81 } 82 m = SCTP_HEADER_TO_CHAIN(*i_pak); 83 #ifdef SCTP_MBUF_LOGGING 84 /* Log in any input mbufs */ 85 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) { 86 sctp_log_mbc(m, SCTP_MBUF_INPUT); 87 } 88 #endif 89 #ifdef SCTP_PACKET_LOGGING 90 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LAST_PACKET_TRACING) { 91 sctp_packet_log(m); 92 } 93 #endif 94 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD, 95 "sctp6_input(): Packet of length %d received on %s with csum_flags 0x%b.\n", 96 m->m_pkthdr.len, 97 if_name(m->m_pkthdr.rcvif), 98 (int)m->m_pkthdr.csum_flags, CSUM_BITS); 99 mflowid = m->m_pkthdr.flowid; 100 mflowtype = M_HASHTYPE_GET(m); 101 fibnum = M_GETFIB(m); 102 SCTP_STAT_INCR(sctps_recvpackets); 103 SCTP_STAT_INCR_COUNTER64(sctps_inpackets); 104 /* Get IP, SCTP, and first chunk header together in the first mbuf. */ 105 offset = iphlen + sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr); 106 if (m->m_len < offset) { 107 m = m_pullup(m, offset); 108 if (m == NULL) { 109 SCTP_STAT_INCR(sctps_hdrops); 110 return (IPPROTO_DONE); 111 } 112 } 113 ip6 = mtod(m, struct ip6_hdr *); 114 sh = (struct sctphdr *)(mtod(m, caddr_t)+iphlen); 115 ch = (struct sctp_chunkhdr *)((caddr_t)sh + sizeof(struct sctphdr)); 116 offset -= sizeof(struct sctp_chunkhdr); 117 memset(&src, 0, sizeof(struct sockaddr_in6)); 118 src.sin6_family = AF_INET6; 119 src.sin6_len = sizeof(struct sockaddr_in6); 120 src.sin6_port = sh->src_port; 121 src.sin6_addr = ip6->ip6_src; 122 if (in6_setscope(&src.sin6_addr, m->m_pkthdr.rcvif, NULL) != 0) { 123 goto out; 124 } 125 memset(&dst, 0, sizeof(struct sockaddr_in6)); 126 dst.sin6_family = AF_INET6; 127 dst.sin6_len = sizeof(struct sockaddr_in6); 128 dst.sin6_port = sh->dest_port; 129 dst.sin6_addr = ip6->ip6_dst; 130 if (in6_setscope(&dst.sin6_addr, m->m_pkthdr.rcvif, NULL) != 0) { 131 goto out; 132 } 133 length = ntohs(ip6->ip6_plen) + iphlen; 134 /* Validate mbuf chain length with IP payload length. */ 135 if (SCTP_HEADER_LEN(m) != length) { 136 SCTPDBG(SCTP_DEBUG_INPUT1, 137 "sctp6_input() length:%d reported length:%d\n", length, SCTP_HEADER_LEN(m)); 138 SCTP_STAT_INCR(sctps_hdrops); 139 goto out; 140 } 141 if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) { 142 goto out; 143 } 144 ecn_bits = IPV6_TRAFFIC_CLASS(ip6); 145 if (m->m_pkthdr.csum_flags & CSUM_SCTP_VALID) { 146 SCTP_STAT_INCR(sctps_recvhwcrc); 147 compute_crc = 0; 148 } else { 149 SCTP_STAT_INCR(sctps_recvswcrc); 150 compute_crc = 1; 151 } 152 sctp_common_input_processing(&m, iphlen, offset, length, 153 (struct sockaddr *)&src, 154 (struct sockaddr *)&dst, 155 sh, ch, 156 compute_crc, 157 ecn_bits, 158 mflowtype, mflowid, fibnum, 159 vrf_id, port); 160 out: 161 if (m) { 162 sctp_m_freem(m); 163 } 164 return (IPPROTO_DONE); 165 } 166 167 int 168 sctp6_input(struct mbuf **i_pak, int *offp, int proto SCTP_UNUSED) 169 { 170 return (sctp6_input_with_port(i_pak, offp, 0)); 171 } 172 173 void 174 sctp6_notify(struct sctp_inpcb *inp, 175 struct sctp_tcb *stcb, 176 struct sctp_nets *net, 177 uint8_t icmp6_type, 178 uint8_t icmp6_code, 179 uint32_t next_mtu) 180 { 181 int timer_stopped; 182 183 switch (icmp6_type) { 184 case ICMP6_DST_UNREACH: 185 if ((icmp6_code == ICMP6_DST_UNREACH_NOROUTE) || 186 (icmp6_code == ICMP6_DST_UNREACH_ADMIN) || 187 (icmp6_code == ICMP6_DST_UNREACH_BEYONDSCOPE) || 188 (icmp6_code == ICMP6_DST_UNREACH_ADDR)) { 189 /* Mark the net unreachable. */ 190 if (net->dest_state & SCTP_ADDR_REACHABLE) { 191 /* Ok that destination is not reachable */ 192 net->dest_state &= ~SCTP_ADDR_REACHABLE; 193 net->dest_state &= ~SCTP_ADDR_PF; 194 sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN, 195 stcb, 0, (void *)net, SCTP_SO_NOT_LOCKED); 196 } 197 } 198 SCTP_TCB_UNLOCK(stcb); 199 break; 200 case ICMP6_PARAM_PROB: 201 /* Treat it like an ABORT. */ 202 if (icmp6_code == ICMP6_PARAMPROB_NEXTHEADER) { 203 sctp_abort_notification(stcb, true, false, 0, NULL, SCTP_SO_NOT_LOCKED); 204 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, 205 SCTP_FROM_SCTP_USRREQ + SCTP_LOC_2); 206 } else { 207 SCTP_TCB_UNLOCK(stcb); 208 } 209 break; 210 case ICMP6_PACKET_TOO_BIG: 211 if (net->dest_state & SCTP_ADDR_NO_PMTUD) { 212 SCTP_TCB_UNLOCK(stcb); 213 break; 214 } 215 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) { 216 timer_stopped = 1; 217 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net, 218 SCTP_FROM_SCTP_USRREQ + SCTP_LOC_1); 219 } else { 220 timer_stopped = 0; 221 } 222 /* Update the path MTU. */ 223 if (net->port) { 224 next_mtu -= sizeof(struct udphdr); 225 } 226 if (net->mtu > next_mtu) { 227 net->mtu = next_mtu; 228 if (net->port) { 229 sctp_hc_set_mtu(&net->ro._l_addr, inp->fibnum, next_mtu + sizeof(struct udphdr)); 230 } else { 231 sctp_hc_set_mtu(&net->ro._l_addr, inp->fibnum, next_mtu); 232 } 233 } 234 /* Update the association MTU */ 235 if (stcb->asoc.smallest_mtu > next_mtu) { 236 sctp_pathmtu_adjustment(stcb, next_mtu, true); 237 } 238 /* Finally, start the PMTU timer if it was running before. */ 239 if (timer_stopped) { 240 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net); 241 } 242 SCTP_TCB_UNLOCK(stcb); 243 break; 244 default: 245 SCTP_TCB_UNLOCK(stcb); 246 break; 247 } 248 } 249 250 void 251 sctp6_ctlinput(struct ip6ctlparam *ip6cp) 252 { 253 struct sctp_inpcb *inp; 254 struct sctp_tcb *stcb; 255 struct sctp_nets *net; 256 struct sctphdr sh; 257 struct sockaddr_in6 src, dst; 258 259 if (icmp6_errmap(ip6cp->ip6c_icmp6) == 0) { 260 return; 261 } 262 263 /* 264 * Check if we can safely examine the ports and the verification tag 265 * of the SCTP common header. 266 */ 267 if (ip6cp->ip6c_m->m_pkthdr.len < 268 (int32_t)(ip6cp->ip6c_off + offsetof(struct sctphdr, checksum))) { 269 return; 270 } 271 272 /* Copy out the port numbers and the verification tag. */ 273 memset(&sh, 0, sizeof(sh)); 274 m_copydata(ip6cp->ip6c_m, 275 ip6cp->ip6c_off, 276 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t), 277 (caddr_t)&sh); 278 memset(&src, 0, sizeof(struct sockaddr_in6)); 279 src.sin6_family = AF_INET6; 280 src.sin6_len = sizeof(struct sockaddr_in6); 281 src.sin6_port = sh.src_port; 282 src.sin6_addr = ip6cp->ip6c_ip6->ip6_src; 283 if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) { 284 return; 285 } 286 memset(&dst, 0, sizeof(struct sockaddr_in6)); 287 dst.sin6_family = AF_INET6; 288 dst.sin6_len = sizeof(struct sockaddr_in6); 289 dst.sin6_port = sh.dest_port; 290 dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst; 291 if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) { 292 return; 293 } 294 inp = NULL; 295 net = NULL; 296 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst, 297 (struct sockaddr *)&src, 298 &inp, &net, 1, SCTP_DEFAULT_VRFID); 299 if ((stcb != NULL) && 300 (net != NULL) && 301 (inp != NULL)) { 302 /* Check the verification tag */ 303 if (ntohl(sh.v_tag) != 0) { 304 /* 305 * This must be the verification tag used for 306 * sending out packets. We don't consider packets 307 * reflecting the verification tag. 308 */ 309 if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) { 310 SCTP_TCB_UNLOCK(stcb); 311 return; 312 } 313 } else { 314 if (ip6cp->ip6c_m->m_pkthdr.len >= 315 ip6cp->ip6c_off + sizeof(struct sctphdr) + 316 sizeof(struct sctp_chunkhdr) + 317 offsetof(struct sctp_init, a_rwnd)) { 318 /* 319 * In this case we can check if we got an 320 * INIT chunk and if the initiate tag 321 * matches. 322 */ 323 uint32_t initiate_tag; 324 uint8_t chunk_type; 325 326 m_copydata(ip6cp->ip6c_m, 327 ip6cp->ip6c_off + 328 sizeof(struct sctphdr), 329 sizeof(uint8_t), 330 (caddr_t)&chunk_type); 331 m_copydata(ip6cp->ip6c_m, 332 ip6cp->ip6c_off + 333 sizeof(struct sctphdr) + 334 sizeof(struct sctp_chunkhdr), 335 sizeof(uint32_t), 336 (caddr_t)&initiate_tag); 337 if ((chunk_type != SCTP_INITIATION) || 338 (ntohl(initiate_tag) != stcb->asoc.my_vtag)) { 339 SCTP_TCB_UNLOCK(stcb); 340 return; 341 } 342 } else { 343 SCTP_TCB_UNLOCK(stcb); 344 return; 345 } 346 } 347 sctp6_notify(inp, stcb, net, 348 ip6cp->ip6c_icmp6->icmp6_type, 349 ip6cp->ip6c_icmp6->icmp6_code, 350 ntohl(ip6cp->ip6c_icmp6->icmp6_mtu)); 351 } else { 352 if ((stcb == NULL) && (inp != NULL)) { 353 /* reduce inp's ref-count */ 354 SCTP_INP_WLOCK(inp); 355 SCTP_INP_DECR_REF(inp); 356 SCTP_INP_WUNLOCK(inp); 357 } 358 if (stcb) { 359 SCTP_TCB_UNLOCK(stcb); 360 } 361 } 362 } 363 364 /* 365 * this routine can probably be collasped into the one in sctp_userreq.c 366 * since they do the same thing and now we lookup with a sockaddr 367 */ 368 static int 369 sctp6_getcred(SYSCTL_HANDLER_ARGS) 370 { 371 struct xucred xuc; 372 struct sockaddr_in6 addrs[2]; 373 struct sctp_inpcb *inp; 374 struct sctp_nets *net; 375 struct sctp_tcb *stcb; 376 int error; 377 uint32_t vrf_id; 378 379 vrf_id = SCTP_DEFAULT_VRFID; 380 381 error = priv_check(req->td, PRIV_NETINET_GETCRED); 382 if (error) 383 return (error); 384 385 if (req->newlen != sizeof(addrs)) { 386 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 387 return (EINVAL); 388 } 389 if (req->oldlen != sizeof(struct ucred)) { 390 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 391 return (EINVAL); 392 } 393 error = SYSCTL_IN(req, addrs, sizeof(addrs)); 394 if (error) 395 return (error); 396 397 stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[1]), 398 sin6tosa(&addrs[0]), 399 &inp, &net, 1, vrf_id); 400 if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) { 401 if ((inp != NULL) && (stcb == NULL)) { 402 /* reduce ref-count */ 403 SCTP_INP_WLOCK(inp); 404 SCTP_INP_DECR_REF(inp); 405 goto cred_can_cont; 406 } 407 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 408 error = ENOENT; 409 goto out; 410 } 411 SCTP_TCB_UNLOCK(stcb); 412 /* 413 * We use the write lock here, only since in the error leg we need 414 * it. If we used RLOCK, then we would have to 415 * wlock/decr/unlock/rlock. Which in theory could create a hole. 416 * Better to use higher wlock. 417 */ 418 SCTP_INP_WLOCK(inp); 419 cred_can_cont: 420 error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket); 421 if (error) { 422 SCTP_INP_WUNLOCK(inp); 423 goto out; 424 } 425 cru2x(inp->sctp_socket->so_cred, &xuc); 426 SCTP_INP_WUNLOCK(inp); 427 error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred)); 428 out: 429 return (error); 430 } 431 432 SYSCTL_PROC(_net_inet6_sctp6, OID_AUTO, getcred, 433 CTLTYPE_OPAQUE | CTLFLAG_RW | CTLFLAG_NEEDGIANT, 434 0, 0, sctp6_getcred, "S,ucred", 435 "Get the ucred of a SCTP6 connection"); 436 437 static int 438 sctp6_attach(struct socket *so, int proto SCTP_UNUSED, struct thread *p SCTP_UNUSED) 439 { 440 int error; 441 struct sctp_inpcb *inp; 442 uint32_t vrf_id = SCTP_DEFAULT_VRFID; 443 444 inp = (struct sctp_inpcb *)so->so_pcb; 445 if (inp != NULL) { 446 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 447 return (EINVAL); 448 } 449 450 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 451 error = SCTP_SORESERVE(so, SCTP_BASE_SYSCTL(sctp_sendspace), SCTP_BASE_SYSCTL(sctp_recvspace)); 452 if (error) 453 return (error); 454 } 455 error = sctp_inpcb_alloc(so, vrf_id); 456 if (error) 457 return (error); 458 inp = (struct sctp_inpcb *)so->so_pcb; 459 SCTP_INP_WLOCK(inp); 460 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUND_V6; /* I'm v6! */ 461 462 inp->ip_inp.inp.inp_vflag |= INP_IPV6; 463 inp->ip_inp.inp.in6p_hops = -1; /* use kernel default */ 464 inp->ip_inp.inp.in6p_cksum = -1; /* just to be sure */ 465 #ifdef INET 466 /* 467 * XXX: ugly!! IPv4 TTL initialization is necessary for an IPv6 468 * socket as well, because the socket may be bound to an IPv6 469 * wildcard address, which may match an IPv4-mapped IPv6 address. 470 */ 471 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl); 472 #endif 473 SCTP_INP_WUNLOCK(inp); 474 return (0); 475 } 476 477 static int 478 sctp6_bind(struct socket *so, struct sockaddr *addr, struct thread *p) 479 { 480 struct sctp_inpcb *inp; 481 int error; 482 u_char vflagsav; 483 484 inp = (struct sctp_inpcb *)so->so_pcb; 485 if (inp == NULL) { 486 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 487 return (EINVAL); 488 } 489 490 if (addr) { 491 switch (addr->sa_family) { 492 #ifdef INET 493 case AF_INET: 494 if (addr->sa_len != sizeof(struct sockaddr_in)) { 495 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 496 return (EINVAL); 497 } 498 break; 499 #endif 500 #ifdef INET6 501 case AF_INET6: 502 if (addr->sa_len != sizeof(struct sockaddr_in6)) { 503 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 504 return (EINVAL); 505 } 506 break; 507 #endif 508 default: 509 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 510 return (EINVAL); 511 } 512 } 513 vflagsav = inp->ip_inp.inp.inp_vflag; 514 inp->ip_inp.inp.inp_vflag &= ~INP_IPV4; 515 inp->ip_inp.inp.inp_vflag |= INP_IPV6; 516 if ((addr != NULL) && (SCTP_IPV6_V6ONLY(inp) == 0)) { 517 switch (addr->sa_family) { 518 #ifdef INET 519 case AF_INET: 520 /* binding v4 addr to v6 socket, so reset flags */ 521 inp->ip_inp.inp.inp_vflag |= INP_IPV4; 522 inp->ip_inp.inp.inp_vflag &= ~INP_IPV6; 523 break; 524 #endif 525 #ifdef INET6 526 case AF_INET6: 527 { 528 struct sockaddr_in6 *sin6_p; 529 530 sin6_p = (struct sockaddr_in6 *)addr; 531 532 if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr)) { 533 inp->ip_inp.inp.inp_vflag |= INP_IPV4; 534 } 535 #ifdef INET 536 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { 537 struct sockaddr_in sin; 538 539 in6_sin6_2_sin(&sin, sin6_p); 540 inp->ip_inp.inp.inp_vflag |= INP_IPV4; 541 inp->ip_inp.inp.inp_vflag &= ~INP_IPV6; 542 error = sctp_inpcb_bind(so, (struct sockaddr *)&sin, NULL, p); 543 goto out; 544 } 545 #endif 546 break; 547 } 548 #endif 549 default: 550 break; 551 } 552 } else if (addr != NULL) { 553 struct sockaddr_in6 *sin6_p; 554 555 /* IPV6_V6ONLY socket */ 556 #ifdef INET 557 if (addr->sa_family == AF_INET) { 558 /* can't bind v4 addr to v6 only socket! */ 559 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 560 error = EINVAL; 561 goto out; 562 } 563 #endif 564 sin6_p = (struct sockaddr_in6 *)addr; 565 566 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { 567 /* can't bind v4-mapped addrs either! */ 568 /* NOTE: we don't support SIIT */ 569 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 570 error = EINVAL; 571 goto out; 572 } 573 } 574 error = sctp_inpcb_bind(so, addr, NULL, p); 575 out: 576 if (error != 0) 577 inp->ip_inp.inp.inp_vflag = vflagsav; 578 return (error); 579 } 580 581 static void 582 sctp6_close(struct socket *so) 583 { 584 sctp_close(so); 585 } 586 587 /* This could be made common with sctp_detach() since they are identical */ 588 589 int 590 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, 591 struct mbuf *control, struct thread *p); 592 593 static int 594 sctp6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, 595 struct mbuf *control, struct thread *p) 596 { 597 struct sctp_inpcb *inp; 598 599 #ifdef INET 600 struct sockaddr_in6 *sin6; 601 #endif /* INET */ 602 /* No SPL needed since sctp_output does this */ 603 604 inp = (struct sctp_inpcb *)so->so_pcb; 605 if (inp == NULL) { 606 if (control) { 607 SCTP_RELEASE_PKT(control); 608 control = NULL; 609 } 610 SCTP_RELEASE_PKT(m); 611 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 612 return (EINVAL); 613 } 614 /* 615 * For the TCP model we may get a NULL addr, if we are a connected 616 * socket thats ok. 617 */ 618 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) && 619 (addr == NULL)) { 620 goto connected_type; 621 } 622 if (addr == NULL) { 623 SCTP_RELEASE_PKT(m); 624 if (control) { 625 SCTP_RELEASE_PKT(control); 626 control = NULL; 627 } 628 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EDESTADDRREQ); 629 return (EDESTADDRREQ); 630 } 631 switch (addr->sa_family) { 632 #ifdef INET 633 case AF_INET: 634 if (addr->sa_len != sizeof(struct sockaddr_in)) { 635 if (control) { 636 SCTP_RELEASE_PKT(control); 637 control = NULL; 638 } 639 SCTP_RELEASE_PKT(m); 640 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 641 return (EINVAL); 642 } 643 break; 644 #endif 645 #ifdef INET6 646 case AF_INET6: 647 if (addr->sa_len != sizeof(struct sockaddr_in6)) { 648 if (control) { 649 SCTP_RELEASE_PKT(control); 650 control = NULL; 651 } 652 SCTP_RELEASE_PKT(m); 653 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 654 return (EINVAL); 655 } 656 break; 657 #endif 658 default: 659 if (control) { 660 SCTP_RELEASE_PKT(control); 661 control = NULL; 662 } 663 SCTP_RELEASE_PKT(m); 664 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 665 return (EINVAL); 666 } 667 #ifdef INET 668 sin6 = (struct sockaddr_in6 *)addr; 669 if (SCTP_IPV6_V6ONLY(inp)) { 670 /* 671 * if IPV6_V6ONLY flag, we discard datagrams destined to a 672 * v4 addr or v4-mapped addr 673 */ 674 if (addr->sa_family == AF_INET) { 675 if (control) { 676 SCTP_RELEASE_PKT(control); 677 control = NULL; 678 } 679 SCTP_RELEASE_PKT(m); 680 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 681 return (EINVAL); 682 } 683 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 684 if (control) { 685 SCTP_RELEASE_PKT(control); 686 control = NULL; 687 } 688 SCTP_RELEASE_PKT(m); 689 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 690 return (EINVAL); 691 } 692 } 693 if ((addr->sa_family == AF_INET6) && 694 IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 695 struct sockaddr_in sin; 696 697 /* convert v4-mapped into v4 addr and send */ 698 in6_sin6_2_sin(&sin, sin6); 699 return (sctp_sendm(so, flags, m, (struct sockaddr *)&sin, control, p)); 700 } 701 #endif /* INET */ 702 connected_type: 703 /* now what about control */ 704 if (control) { 705 if (inp->control) { 706 SCTP_PRINTF("huh? control set?\n"); 707 SCTP_RELEASE_PKT(inp->control); 708 inp->control = NULL; 709 } 710 inp->control = control; 711 } 712 /* Place the data */ 713 if (inp->pkt) { 714 SCTP_BUF_NEXT(inp->pkt_last) = m; 715 inp->pkt_last = m; 716 } else { 717 inp->pkt_last = inp->pkt = m; 718 } 719 if ( 720 /* FreeBSD and MacOSX uses a flag passed */ 721 ((flags & PRUS_MORETOCOME) == 0) 722 ) { 723 /* 724 * note with the current version this code will only be used 725 * by OpenBSD, NetBSD and FreeBSD have methods for 726 * re-defining sosend() to use sctp_sosend(). One can 727 * optionaly switch back to this code (by changing back the 728 * defininitions but this is not advisable. 729 */ 730 struct epoch_tracker et; 731 int ret; 732 733 NET_EPOCH_ENTER(et); 734 ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags); 735 NET_EPOCH_EXIT(et); 736 inp->pkt = NULL; 737 inp->control = NULL; 738 return (ret); 739 } else { 740 return (0); 741 } 742 } 743 744 static int 745 sctp6_connect(struct socket *so, struct sockaddr *addr, struct thread *p) 746 { 747 struct epoch_tracker et; 748 uint32_t vrf_id; 749 int error = 0; 750 struct sctp_inpcb *inp; 751 struct sctp_tcb *stcb; 752 #ifdef INET 753 struct sockaddr_in6 *sin6; 754 union sctp_sockstore store; 755 #endif 756 757 inp = (struct sctp_inpcb *)so->so_pcb; 758 if (inp == NULL) { 759 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 760 return (ECONNRESET); /* I made the same as TCP since we are 761 * not setup? */ 762 } 763 if (addr == NULL) { 764 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 765 return (EINVAL); 766 } 767 switch (addr->sa_family) { 768 #ifdef INET 769 case AF_INET: 770 if (addr->sa_len != sizeof(struct sockaddr_in)) { 771 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 772 return (EINVAL); 773 } 774 break; 775 #endif 776 #ifdef INET6 777 case AF_INET6: 778 if (addr->sa_len != sizeof(struct sockaddr_in6)) { 779 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 780 return (EINVAL); 781 } 782 break; 783 #endif 784 default: 785 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 786 return (EINVAL); 787 } 788 789 vrf_id = inp->def_vrf_id; 790 SCTP_ASOC_CREATE_LOCK(inp); 791 SCTP_INP_RLOCK(inp); 792 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 793 SCTP_PCB_FLAGS_UNBOUND) { 794 /* Bind a ephemeral port */ 795 SCTP_INP_RUNLOCK(inp); 796 error = sctp6_bind(so, NULL, p); 797 if (error) { 798 SCTP_ASOC_CREATE_UNLOCK(inp); 799 800 return (error); 801 } 802 SCTP_INP_RLOCK(inp); 803 } 804 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && 805 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) { 806 /* We are already connected AND the TCP model */ 807 SCTP_INP_RUNLOCK(inp); 808 SCTP_ASOC_CREATE_UNLOCK(inp); 809 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EADDRINUSE); 810 return (EADDRINUSE); 811 } 812 #ifdef INET 813 sin6 = (struct sockaddr_in6 *)addr; 814 if (SCTP_IPV6_V6ONLY(inp)) { 815 /* 816 * if IPV6_V6ONLY flag, ignore connections destined to a v4 817 * addr or v4-mapped addr 818 */ 819 if (addr->sa_family == AF_INET) { 820 SCTP_INP_RUNLOCK(inp); 821 SCTP_ASOC_CREATE_UNLOCK(inp); 822 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 823 return (EINVAL); 824 } 825 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 826 SCTP_INP_RUNLOCK(inp); 827 SCTP_ASOC_CREATE_UNLOCK(inp); 828 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 829 return (EINVAL); 830 } 831 } 832 if ((addr->sa_family == AF_INET6) && 833 IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 834 /* convert v4-mapped into v4 addr */ 835 in6_sin6_2_sin(&store.sin, sin6); 836 addr = &store.sa; 837 } 838 #endif /* INET */ 839 /* Now do we connect? */ 840 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 841 stcb = LIST_FIRST(&inp->sctp_asoc_list); 842 if (stcb) { 843 SCTP_TCB_LOCK(stcb); 844 } 845 SCTP_INP_RUNLOCK(inp); 846 } else { 847 SCTP_INP_RUNLOCK(inp); 848 SCTP_INP_WLOCK(inp); 849 SCTP_INP_INCR_REF(inp); 850 SCTP_INP_WUNLOCK(inp); 851 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL); 852 if (stcb == NULL) { 853 SCTP_INP_WLOCK(inp); 854 SCTP_INP_DECR_REF(inp); 855 SCTP_INP_WUNLOCK(inp); 856 } 857 } 858 859 if (stcb != NULL) { 860 /* Already have or am bring up an association */ 861 SCTP_ASOC_CREATE_UNLOCK(inp); 862 SCTP_TCB_UNLOCK(stcb); 863 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EALREADY); 864 return (EALREADY); 865 } 866 /* We are GOOD to go */ 867 stcb = sctp_aloc_assoc_connected(inp, addr, &error, 0, 0, vrf_id, 868 inp->sctp_ep.pre_open_stream_count, 869 inp->sctp_ep.port, p, 870 SCTP_INITIALIZE_AUTH_PARAMS); 871 SCTP_ASOC_CREATE_UNLOCK(inp); 872 if (stcb == NULL) { 873 /* Gak! no memory */ 874 return (error); 875 } 876 SCTP_SET_STATE(stcb, SCTP_STATE_COOKIE_WAIT); 877 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); 878 NET_EPOCH_ENTER(et); 879 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED); 880 SCTP_TCB_UNLOCK(stcb); 881 NET_EPOCH_EXIT(et); 882 return (error); 883 } 884 885 static int 886 sctp6_getaddr(struct socket *so, struct sockaddr **addr) 887 { 888 struct sockaddr_in6 *sin6; 889 struct sctp_inpcb *inp; 890 uint32_t vrf_id; 891 struct sctp_ifa *sctp_ifa; 892 893 int error; 894 895 /* 896 * Do the malloc first in case it blocks. 897 */ 898 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof(*sin6)); 899 if (sin6 == NULL) 900 return (ENOMEM); 901 sin6->sin6_family = AF_INET6; 902 sin6->sin6_len = sizeof(*sin6); 903 904 inp = (struct sctp_inpcb *)so->so_pcb; 905 if (inp == NULL) { 906 SCTP_FREE_SONAME(sin6); 907 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 908 return (ECONNRESET); 909 } 910 SCTP_INP_RLOCK(inp); 911 sin6->sin6_port = inp->sctp_lport; 912 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 913 /* For the bound all case you get back 0 */ 914 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 915 struct sctp_tcb *stcb; 916 struct sockaddr_in6 *sin_a6; 917 struct sctp_nets *net; 918 int fnd; 919 920 stcb = LIST_FIRST(&inp->sctp_asoc_list); 921 if (stcb == NULL) { 922 SCTP_INP_RUNLOCK(inp); 923 SCTP_FREE_SONAME(sin6); 924 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 925 return (ENOENT); 926 } 927 fnd = 0; 928 sin_a6 = NULL; 929 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 930 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr; 931 if (sin_a6 == NULL) 932 /* this will make coverity happy */ 933 continue; 934 935 if (sin_a6->sin6_family == AF_INET6) { 936 fnd = 1; 937 break; 938 } 939 } 940 if ((!fnd) || (sin_a6 == NULL)) { 941 /* punt */ 942 SCTP_INP_RUNLOCK(inp); 943 SCTP_FREE_SONAME(sin6); 944 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 945 return (ENOENT); 946 } 947 vrf_id = inp->def_vrf_id; 948 sctp_ifa = sctp_source_address_selection(inp, stcb, (sctp_route_t *)&net->ro, net, 0, vrf_id); 949 if (sctp_ifa) { 950 sin6->sin6_addr = sctp_ifa->address.sin6.sin6_addr; 951 } 952 } else { 953 /* For the bound all case you get back 0 */ 954 memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr)); 955 } 956 } else { 957 /* Take the first IPv6 address in the list */ 958 struct sctp_laddr *laddr; 959 int fnd = 0; 960 961 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { 962 if (laddr->ifa->address.sa.sa_family == AF_INET6) { 963 struct sockaddr_in6 *sin_a; 964 965 sin_a = &laddr->ifa->address.sin6; 966 sin6->sin6_addr = sin_a->sin6_addr; 967 fnd = 1; 968 break; 969 } 970 } 971 if (!fnd) { 972 SCTP_FREE_SONAME(sin6); 973 SCTP_INP_RUNLOCK(inp); 974 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 975 return (ENOENT); 976 } 977 } 978 SCTP_INP_RUNLOCK(inp); 979 /* Scoping things for v6 */ 980 if ((error = sa6_recoverscope(sin6)) != 0) { 981 SCTP_FREE_SONAME(sin6); 982 return (error); 983 } 984 (*addr) = (struct sockaddr *)sin6; 985 return (0); 986 } 987 988 static int 989 sctp6_peeraddr(struct socket *so, struct sockaddr **addr) 990 { 991 struct sockaddr_in6 *sin6; 992 int fnd; 993 struct sockaddr_in6 *sin_a6; 994 struct sctp_inpcb *inp; 995 struct sctp_tcb *stcb; 996 struct sctp_nets *net; 997 int error; 998 999 /* Do the malloc first in case it blocks. */ 1000 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 1001 if (sin6 == NULL) 1002 return (ENOMEM); 1003 sin6->sin6_family = AF_INET6; 1004 sin6->sin6_len = sizeof(*sin6); 1005 1006 inp = (struct sctp_inpcb *)so->so_pcb; 1007 if ((inp == NULL) || 1008 ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) { 1009 /* UDP type and listeners will drop out here */ 1010 SCTP_FREE_SONAME(sin6); 1011 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOTCONN); 1012 return (ENOTCONN); 1013 } 1014 SCTP_INP_RLOCK(inp); 1015 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1016 if (stcb) { 1017 SCTP_TCB_LOCK(stcb); 1018 } 1019 SCTP_INP_RUNLOCK(inp); 1020 if (stcb == NULL) { 1021 SCTP_FREE_SONAME(sin6); 1022 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 1023 return (ECONNRESET); 1024 } 1025 fnd = 0; 1026 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1027 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr; 1028 if (sin_a6->sin6_family == AF_INET6) { 1029 fnd = 1; 1030 sin6->sin6_port = stcb->rport; 1031 sin6->sin6_addr = sin_a6->sin6_addr; 1032 break; 1033 } 1034 } 1035 SCTP_TCB_UNLOCK(stcb); 1036 if (!fnd) { 1037 /* No IPv4 address */ 1038 SCTP_FREE_SONAME(sin6); 1039 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 1040 return (ENOENT); 1041 } 1042 if ((error = sa6_recoverscope(sin6)) != 0) { 1043 SCTP_FREE_SONAME(sin6); 1044 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, error); 1045 return (error); 1046 } 1047 *addr = (struct sockaddr *)sin6; 1048 return (0); 1049 } 1050 1051 static int 1052 sctp6_in6getaddr(struct socket *so, struct sockaddr **nam) 1053 { 1054 struct inpcb *inp = sotoinpcb(so); 1055 int error; 1056 1057 if (inp == NULL) { 1058 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1059 return (EINVAL); 1060 } 1061 1062 /* allow v6 addresses precedence */ 1063 error = sctp6_getaddr(so, nam); 1064 #ifdef INET 1065 if (error) { 1066 struct sockaddr_in6 *sin6; 1067 1068 /* try v4 next if v6 failed */ 1069 error = sctp_ingetaddr(so, nam); 1070 if (error) { 1071 return (error); 1072 } 1073 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 1074 if (sin6 == NULL) { 1075 SCTP_FREE_SONAME(*nam); 1076 return (ENOMEM); 1077 } 1078 in6_sin_2_v4mapsin6((struct sockaddr_in *)*nam, sin6); 1079 SCTP_FREE_SONAME(*nam); 1080 *nam = (struct sockaddr *)sin6; 1081 } 1082 #endif 1083 return (error); 1084 } 1085 1086 static int 1087 sctp6_getpeeraddr(struct socket *so, struct sockaddr **nam) 1088 { 1089 struct inpcb *inp = sotoinpcb(so); 1090 int error; 1091 1092 if (inp == NULL) { 1093 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1094 return (EINVAL); 1095 } 1096 1097 /* allow v6 addresses precedence */ 1098 error = sctp6_peeraddr(so, nam); 1099 #ifdef INET 1100 if (error) { 1101 struct sockaddr_in6 *sin6; 1102 1103 /* try v4 next if v6 failed */ 1104 error = sctp_peeraddr(so, nam); 1105 if (error) { 1106 return (error); 1107 } 1108 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 1109 if (sin6 == NULL) { 1110 SCTP_FREE_SONAME(*nam); 1111 return (ENOMEM); 1112 } 1113 in6_sin_2_v4mapsin6((struct sockaddr_in *)*nam, sin6); 1114 SCTP_FREE_SONAME(*nam); 1115 *nam = (struct sockaddr *)sin6; 1116 } 1117 #endif 1118 return (error); 1119 } 1120 1121 #define SCTP6_PROTOSW \ 1122 .pr_protocol = IPPROTO_SCTP, \ 1123 .pr_ctloutput = sctp_ctloutput, \ 1124 .pr_abort = sctp_abort, \ 1125 .pr_accept = sctp_accept, \ 1126 .pr_attach = sctp6_attach, \ 1127 .pr_bind = sctp6_bind, \ 1128 .pr_connect = sctp6_connect, \ 1129 .pr_control = in6_control, \ 1130 .pr_close = sctp6_close, \ 1131 .pr_detach = sctp6_close, \ 1132 .pr_sopoll = sopoll_generic, \ 1133 .pr_flush = sctp_flush, \ 1134 .pr_disconnect = sctp_disconnect, \ 1135 .pr_listen = sctp_listen, \ 1136 .pr_peeraddr = sctp6_getpeeraddr, \ 1137 .pr_send = sctp6_send, \ 1138 .pr_shutdown = sctp_shutdown, \ 1139 .pr_sockaddr = sctp6_in6getaddr, \ 1140 .pr_sosend = sctp_sosend, \ 1141 .pr_soreceive = sctp_soreceive 1142 1143 struct protosw sctp6_seqpacket_protosw = { 1144 .pr_type = SOCK_SEQPACKET, 1145 .pr_flags = PR_WANTRCVD, 1146 SCTP6_PROTOSW 1147 }; 1148 1149 struct protosw sctp6_stream_protosw = { 1150 .pr_type = SOCK_STREAM, 1151 .pr_flags = PR_CONNREQUIRED | PR_WANTRCVD, 1152 SCTP6_PROTOSW 1153 }; 1154 #endif 1155