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 ip6 = mtod(m, struct ip6_hdr *); 107 IP6_EXTHDR_GET(sh, struct sctphdr *, m, iphlen, 108 (int)(sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr))); 109 if (sh == NULL) { 110 SCTP_STAT_INCR(sctps_hdrops); 111 return (IPPROTO_DONE); 112 } 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 = ((ntohl(ip6->ip6_flow) >> 20) & 0x000000ff); 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 } 164 165 166 int 167 sctp6_input(struct mbuf **i_pak, int *offp, int proto SCTP_UNUSED) 168 { 169 return (sctp6_input_with_port(i_pak, offp, 0)); 170 } 171 172 void 173 sctp6_notify(struct sctp_inpcb *inp, 174 struct sctp_tcb *stcb, 175 struct sctp_nets *net, 176 uint8_t icmp6_type, 177 uint8_t icmp6_code, 178 uint32_t next_mtu) 179 { 180 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 181 struct socket *so; 182 #endif 183 int timer_stopped; 184 185 switch (icmp6_type) { 186 case ICMP6_DST_UNREACH: 187 if ((icmp6_code == ICMP6_DST_UNREACH_NOROUTE) || 188 (icmp6_code == ICMP6_DST_UNREACH_ADMIN) || 189 (icmp6_code == ICMP6_DST_UNREACH_BEYONDSCOPE) || 190 (icmp6_code == ICMP6_DST_UNREACH_ADDR)) { 191 /* Mark the net unreachable. */ 192 if (net->dest_state & SCTP_ADDR_REACHABLE) { 193 /* Ok that destination is not reachable */ 194 net->dest_state &= ~SCTP_ADDR_REACHABLE; 195 net->dest_state &= ~SCTP_ADDR_PF; 196 sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN, 197 stcb, 0, (void *)net, SCTP_SO_NOT_LOCKED); 198 } 199 } 200 SCTP_TCB_UNLOCK(stcb); 201 break; 202 case ICMP6_PARAM_PROB: 203 /* Treat it like an ABORT. */ 204 if (icmp6_code == ICMP6_PARAMPROB_NEXTHEADER) { 205 sctp_abort_notification(stcb, 1, 0, NULL, SCTP_SO_NOT_LOCKED); 206 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 207 so = SCTP_INP_SO(inp); 208 atomic_add_int(&stcb->asoc.refcnt, 1); 209 SCTP_TCB_UNLOCK(stcb); 210 SCTP_SOCKET_LOCK(so, 1); 211 SCTP_TCB_LOCK(stcb); 212 atomic_subtract_int(&stcb->asoc.refcnt, 1); 213 #endif 214 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, 215 SCTP_FROM_SCTP_USRREQ + SCTP_LOC_2); 216 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 217 SCTP_SOCKET_UNLOCK(so, 1); 218 #endif 219 } else { 220 SCTP_TCB_UNLOCK(stcb); 221 } 222 break; 223 case ICMP6_PACKET_TOO_BIG: 224 if (net->dest_state & SCTP_ADDR_NO_PMTUD) { 225 SCTP_TCB_UNLOCK(stcb); 226 break; 227 } 228 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) { 229 timer_stopped = 1; 230 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net, 231 SCTP_FROM_SCTP_USRREQ + SCTP_LOC_1); 232 } else { 233 timer_stopped = 0; 234 } 235 /* Update the path MTU. */ 236 if (net->port) { 237 next_mtu -= sizeof(struct udphdr); 238 } 239 if (net->mtu > next_mtu) { 240 net->mtu = next_mtu; 241 } 242 /* Update the association MTU */ 243 if (stcb->asoc.smallest_mtu > next_mtu) { 244 sctp_pathmtu_adjustment(stcb, next_mtu); 245 } 246 /* Finally, start the PMTU timer if it was running before. */ 247 if (timer_stopped) { 248 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net); 249 } 250 SCTP_TCB_UNLOCK(stcb); 251 break; 252 default: 253 SCTP_TCB_UNLOCK(stcb); 254 break; 255 } 256 } 257 258 void 259 sctp6_ctlinput(int cmd, struct sockaddr *pktdst, void *d) 260 { 261 struct ip6ctlparam *ip6cp; 262 struct sctp_inpcb *inp; 263 struct sctp_tcb *stcb; 264 struct sctp_nets *net; 265 struct sctphdr sh; 266 struct sockaddr_in6 src, dst; 267 268 if (pktdst->sa_family != AF_INET6 || 269 pktdst->sa_len != sizeof(struct sockaddr_in6)) { 270 return; 271 } 272 273 if ((unsigned)cmd >= PRC_NCMDS) { 274 return; 275 } 276 if (PRC_IS_REDIRECT(cmd)) { 277 d = NULL; 278 } else if (inet6ctlerrmap[cmd] == 0) { 279 return; 280 } 281 /* If the parameter is from icmp6, decode it. */ 282 if (d != NULL) { 283 ip6cp = (struct ip6ctlparam *)d; 284 } else { 285 ip6cp = (struct ip6ctlparam *)NULL; 286 } 287 288 if (ip6cp != NULL) { 289 /* 290 * XXX: We assume that when IPV6 is non NULL, M and OFF are 291 * valid. 292 */ 293 if (ip6cp->ip6c_m == NULL) { 294 return; 295 } 296 297 /* 298 * Check if we can safely examine the ports and the 299 * verification tag of the SCTP common header. 300 */ 301 if (ip6cp->ip6c_m->m_pkthdr.len < 302 (int32_t)(ip6cp->ip6c_off + offsetof(struct sctphdr, checksum))) { 303 return; 304 } 305 306 /* Copy out the port numbers and the verification tag. */ 307 memset(&sh, 0, sizeof(sh)); 308 m_copydata(ip6cp->ip6c_m, 309 ip6cp->ip6c_off, 310 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t), 311 (caddr_t)&sh); 312 memset(&src, 0, sizeof(struct sockaddr_in6)); 313 src.sin6_family = AF_INET6; 314 src.sin6_len = sizeof(struct sockaddr_in6); 315 src.sin6_port = sh.src_port; 316 src.sin6_addr = ip6cp->ip6c_ip6->ip6_src; 317 if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) { 318 return; 319 } 320 memset(&dst, 0, sizeof(struct sockaddr_in6)); 321 dst.sin6_family = AF_INET6; 322 dst.sin6_len = sizeof(struct sockaddr_in6); 323 dst.sin6_port = sh.dest_port; 324 dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst; 325 if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) { 326 return; 327 } 328 inp = NULL; 329 net = NULL; 330 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst, 331 (struct sockaddr *)&src, 332 &inp, &net, 1, SCTP_DEFAULT_VRFID); 333 if ((stcb != NULL) && 334 (net != NULL) && 335 (inp != NULL)) { 336 /* Check the verification tag */ 337 if (ntohl(sh.v_tag) != 0) { 338 /* 339 * This must be the verification tag used 340 * for sending out packets. We don't 341 * consider packets reflecting the 342 * verification tag. 343 */ 344 if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) { 345 SCTP_TCB_UNLOCK(stcb); 346 return; 347 } 348 } else { 349 if (ip6cp->ip6c_m->m_pkthdr.len >= 350 ip6cp->ip6c_off + sizeof(struct sctphdr) + 351 sizeof(struct sctp_chunkhdr) + 352 offsetof(struct sctp_init, a_rwnd)) { 353 /* 354 * In this case we can check if we 355 * got an INIT chunk and if the 356 * initiate tag matches. 357 */ 358 uint32_t initiate_tag; 359 uint8_t chunk_type; 360 361 m_copydata(ip6cp->ip6c_m, 362 ip6cp->ip6c_off + 363 sizeof(struct sctphdr), 364 sizeof(uint8_t), 365 (caddr_t)&chunk_type); 366 m_copydata(ip6cp->ip6c_m, 367 ip6cp->ip6c_off + 368 sizeof(struct sctphdr) + 369 sizeof(struct sctp_chunkhdr), 370 sizeof(uint32_t), 371 (caddr_t)&initiate_tag); 372 if ((chunk_type != SCTP_INITIATION) || 373 (ntohl(initiate_tag) != stcb->asoc.my_vtag)) { 374 SCTP_TCB_UNLOCK(stcb); 375 return; 376 } 377 } else { 378 SCTP_TCB_UNLOCK(stcb); 379 return; 380 } 381 } 382 sctp6_notify(inp, stcb, net, 383 ip6cp->ip6c_icmp6->icmp6_type, 384 ip6cp->ip6c_icmp6->icmp6_code, 385 ntohl(ip6cp->ip6c_icmp6->icmp6_mtu)); 386 } else { 387 if ((stcb == NULL) && (inp != NULL)) { 388 /* reduce inp's ref-count */ 389 SCTP_INP_WLOCK(inp); 390 SCTP_INP_DECR_REF(inp); 391 SCTP_INP_WUNLOCK(inp); 392 } 393 if (stcb) { 394 SCTP_TCB_UNLOCK(stcb); 395 } 396 } 397 } 398 } 399 400 /* 401 * this routine can probably be collasped into the one in sctp_userreq.c 402 * since they do the same thing and now we lookup with a sockaddr 403 */ 404 static int 405 sctp6_getcred(SYSCTL_HANDLER_ARGS) 406 { 407 struct xucred xuc; 408 struct sockaddr_in6 addrs[2]; 409 struct sctp_inpcb *inp; 410 struct sctp_nets *net; 411 struct sctp_tcb *stcb; 412 int error; 413 uint32_t vrf_id; 414 415 vrf_id = SCTP_DEFAULT_VRFID; 416 417 error = priv_check(req->td, PRIV_NETINET_GETCRED); 418 if (error) 419 return (error); 420 421 if (req->newlen != sizeof(addrs)) { 422 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 423 return (EINVAL); 424 } 425 if (req->oldlen != sizeof(struct ucred)) { 426 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 427 return (EINVAL); 428 } 429 error = SYSCTL_IN(req, addrs, sizeof(addrs)); 430 if (error) 431 return (error); 432 433 stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[1]), 434 sin6tosa(&addrs[0]), 435 &inp, &net, 1, vrf_id); 436 if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) { 437 if ((inp != NULL) && (stcb == NULL)) { 438 /* reduce ref-count */ 439 SCTP_INP_WLOCK(inp); 440 SCTP_INP_DECR_REF(inp); 441 goto cred_can_cont; 442 } 443 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 444 error = ENOENT; 445 goto out; 446 } 447 SCTP_TCB_UNLOCK(stcb); 448 /* 449 * We use the write lock here, only since in the error leg we need 450 * it. If we used RLOCK, then we would have to 451 * wlock/decr/unlock/rlock. Which in theory could create a hole. 452 * Better to use higher wlock. 453 */ 454 SCTP_INP_WLOCK(inp); 455 cred_can_cont: 456 error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket); 457 if (error) { 458 SCTP_INP_WUNLOCK(inp); 459 goto out; 460 } 461 cru2x(inp->sctp_socket->so_cred, &xuc); 462 SCTP_INP_WUNLOCK(inp); 463 error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred)); 464 out: 465 return (error); 466 } 467 468 SYSCTL_PROC(_net_inet6_sctp6, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW, 469 0, 0, 470 sctp6_getcred, "S,ucred", "Get the ucred of a SCTP6 connection"); 471 472 473 /* This is the same as the sctp_abort() could be made common */ 474 static void 475 sctp6_abort(struct socket *so) 476 { 477 struct sctp_inpcb *inp; 478 uint32_t flags; 479 480 inp = (struct sctp_inpcb *)so->so_pcb; 481 if (inp == NULL) { 482 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 483 return; 484 } 485 sctp_must_try_again: 486 flags = inp->sctp_flags; 487 #ifdef SCTP_LOG_CLOSING 488 sctp_log_closing(inp, NULL, 17); 489 #endif 490 if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) && 491 (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) { 492 #ifdef SCTP_LOG_CLOSING 493 sctp_log_closing(inp, NULL, 16); 494 #endif 495 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 496 SCTP_CALLED_AFTER_CMPSET_OFCLOSE); 497 SOCK_LOCK(so); 498 SCTP_SB_CLEAR(so->so_snd); 499 /* 500 * same for the rcv ones, they are only here for the 501 * accounting/select. 502 */ 503 SCTP_SB_CLEAR(so->so_rcv); 504 /* Now null out the reference, we are completely detached. */ 505 so->so_pcb = NULL; 506 SOCK_UNLOCK(so); 507 } else { 508 flags = inp->sctp_flags; 509 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) { 510 goto sctp_must_try_again; 511 } 512 } 513 return; 514 } 515 516 static int 517 sctp6_attach(struct socket *so, int proto SCTP_UNUSED, struct thread *p SCTP_UNUSED) 518 { 519 int error; 520 struct sctp_inpcb *inp; 521 uint32_t vrf_id = SCTP_DEFAULT_VRFID; 522 523 inp = (struct sctp_inpcb *)so->so_pcb; 524 if (inp != NULL) { 525 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 526 return (EINVAL); 527 } 528 529 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 530 error = SCTP_SORESERVE(so, SCTP_BASE_SYSCTL(sctp_sendspace), SCTP_BASE_SYSCTL(sctp_recvspace)); 531 if (error) 532 return (error); 533 } 534 error = sctp_inpcb_alloc(so, vrf_id); 535 if (error) 536 return (error); 537 inp = (struct sctp_inpcb *)so->so_pcb; 538 SCTP_INP_WLOCK(inp); 539 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUND_V6; /* I'm v6! */ 540 541 inp->ip_inp.inp.inp_vflag |= INP_IPV6; 542 inp->ip_inp.inp.in6p_hops = -1; /* use kernel default */ 543 inp->ip_inp.inp.in6p_cksum = -1; /* just to be sure */ 544 #ifdef INET 545 /* 546 * XXX: ugly!! IPv4 TTL initialization is necessary for an IPv6 547 * socket as well, because the socket may be bound to an IPv6 548 * wildcard address, which may match an IPv4-mapped IPv6 address. 549 */ 550 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl); 551 #endif 552 SCTP_INP_WUNLOCK(inp); 553 return (0); 554 } 555 556 static int 557 sctp6_bind(struct socket *so, struct sockaddr *addr, struct thread *p) 558 { 559 struct sctp_inpcb *inp; 560 int error; 561 562 inp = (struct sctp_inpcb *)so->so_pcb; 563 if (inp == NULL) { 564 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 565 return (EINVAL); 566 } 567 568 if (addr) { 569 switch (addr->sa_family) { 570 #ifdef INET 571 case AF_INET: 572 if (addr->sa_len != sizeof(struct sockaddr_in)) { 573 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 574 return (EINVAL); 575 } 576 break; 577 #endif 578 #ifdef INET6 579 case AF_INET6: 580 if (addr->sa_len != sizeof(struct sockaddr_in6)) { 581 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 582 return (EINVAL); 583 } 584 break; 585 #endif 586 default: 587 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 588 return (EINVAL); 589 } 590 } 591 inp->ip_inp.inp.inp_vflag &= ~INP_IPV4; 592 inp->ip_inp.inp.inp_vflag |= INP_IPV6; 593 if ((addr != NULL) && (SCTP_IPV6_V6ONLY(inp) == 0)) { 594 switch (addr->sa_family) { 595 #ifdef INET 596 case AF_INET: 597 /* binding v4 addr to v6 socket, so reset flags */ 598 inp->ip_inp.inp.inp_vflag |= INP_IPV4; 599 inp->ip_inp.inp.inp_vflag &= ~INP_IPV6; 600 break; 601 #endif 602 #ifdef INET6 603 case AF_INET6: 604 { 605 struct sockaddr_in6 *sin6_p; 606 607 sin6_p = (struct sockaddr_in6 *)addr; 608 609 if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr)) { 610 inp->ip_inp.inp.inp_vflag |= INP_IPV4; 611 } 612 #ifdef INET 613 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { 614 struct sockaddr_in sin; 615 616 in6_sin6_2_sin(&sin, sin6_p); 617 inp->ip_inp.inp.inp_vflag |= INP_IPV4; 618 inp->ip_inp.inp.inp_vflag &= ~INP_IPV6; 619 error = sctp_inpcb_bind(so, (struct sockaddr *)&sin, NULL, p); 620 return (error); 621 } 622 #endif 623 break; 624 } 625 #endif 626 default: 627 break; 628 } 629 } else if (addr != NULL) { 630 struct sockaddr_in6 *sin6_p; 631 632 /* IPV6_V6ONLY socket */ 633 #ifdef INET 634 if (addr->sa_family == AF_INET) { 635 /* can't bind v4 addr to v6 only socket! */ 636 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 637 return (EINVAL); 638 } 639 #endif 640 sin6_p = (struct sockaddr_in6 *)addr; 641 642 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { 643 /* can't bind v4-mapped addrs either! */ 644 /* NOTE: we don't support SIIT */ 645 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 646 return (EINVAL); 647 } 648 } 649 error = sctp_inpcb_bind(so, addr, NULL, p); 650 return (error); 651 } 652 653 654 static void 655 sctp6_close(struct socket *so) 656 { 657 sctp_close(so); 658 } 659 660 /* This could be made common with sctp_detach() since they are identical */ 661 662 static 663 int 664 sctp6_disconnect(struct socket *so) 665 { 666 return (sctp_disconnect(so)); 667 } 668 669 670 int 671 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, 672 struct mbuf *control, struct thread *p); 673 674 675 static int 676 sctp6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, 677 struct mbuf *control, struct thread *p) 678 { 679 struct sctp_inpcb *inp; 680 681 #ifdef INET 682 struct sockaddr_in6 *sin6; 683 #endif /* INET */ 684 /* No SPL needed since sctp_output does this */ 685 686 inp = (struct sctp_inpcb *)so->so_pcb; 687 if (inp == NULL) { 688 if (control) { 689 SCTP_RELEASE_PKT(control); 690 control = NULL; 691 } 692 SCTP_RELEASE_PKT(m); 693 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 694 return (EINVAL); 695 } 696 /* 697 * For the TCP model we may get a NULL addr, if we are a connected 698 * socket thats ok. 699 */ 700 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) && 701 (addr == NULL)) { 702 goto connected_type; 703 } 704 if (addr == NULL) { 705 SCTP_RELEASE_PKT(m); 706 if (control) { 707 SCTP_RELEASE_PKT(control); 708 control = NULL; 709 } 710 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EDESTADDRREQ); 711 return (EDESTADDRREQ); 712 } 713 #ifdef INET 714 sin6 = (struct sockaddr_in6 *)addr; 715 if (SCTP_IPV6_V6ONLY(inp)) { 716 /* 717 * if IPV6_V6ONLY flag, we discard datagrams destined to a 718 * v4 addr or v4-mapped addr 719 */ 720 if (addr->sa_family == AF_INET) { 721 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 722 return (EINVAL); 723 } 724 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 725 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 726 return (EINVAL); 727 } 728 } 729 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 730 struct sockaddr_in sin; 731 732 /* convert v4-mapped into v4 addr and send */ 733 in6_sin6_2_sin(&sin, sin6); 734 return (sctp_sendm(so, flags, m, (struct sockaddr *)&sin, control, p)); 735 } 736 #endif /* INET */ 737 connected_type: 738 /* now what about control */ 739 if (control) { 740 if (inp->control) { 741 SCTP_PRINTF("huh? control set?\n"); 742 SCTP_RELEASE_PKT(inp->control); 743 inp->control = NULL; 744 } 745 inp->control = control; 746 } 747 /* Place the data */ 748 if (inp->pkt) { 749 SCTP_BUF_NEXT(inp->pkt_last) = m; 750 inp->pkt_last = m; 751 } else { 752 inp->pkt_last = inp->pkt = m; 753 } 754 if ( 755 /* FreeBSD and MacOSX uses a flag passed */ 756 ((flags & PRUS_MORETOCOME) == 0) 757 ) { 758 /* 759 * note with the current version this code will only be used 760 * by OpenBSD, NetBSD and FreeBSD have methods for 761 * re-defining sosend() to use sctp_sosend(). One can 762 * optionaly switch back to this code (by changing back the 763 * defininitions but this is not advisable. 764 */ 765 int ret; 766 767 ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags); 768 inp->pkt = NULL; 769 inp->control = NULL; 770 return (ret); 771 } else { 772 return (0); 773 } 774 } 775 776 static int 777 sctp6_connect(struct socket *so, struct sockaddr *addr, struct thread *p) 778 { 779 uint32_t vrf_id; 780 int error = 0; 781 struct sctp_inpcb *inp; 782 struct sctp_tcb *stcb; 783 #ifdef INET 784 struct sockaddr_in6 *sin6; 785 union sctp_sockstore store; 786 #endif 787 788 inp = (struct sctp_inpcb *)so->so_pcb; 789 if (inp == NULL) { 790 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 791 return (ECONNRESET); /* I made the same as TCP since we are 792 * not setup? */ 793 } 794 if (addr == NULL) { 795 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 796 return (EINVAL); 797 } 798 switch (addr->sa_family) { 799 #ifdef INET 800 case AF_INET: 801 if (addr->sa_len != sizeof(struct sockaddr_in)) { 802 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 803 return (EINVAL); 804 } 805 break; 806 #endif 807 #ifdef INET6 808 case AF_INET6: 809 if (addr->sa_len != sizeof(struct sockaddr_in6)) { 810 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 811 return (EINVAL); 812 } 813 break; 814 #endif 815 default: 816 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 817 return (EINVAL); 818 } 819 820 vrf_id = inp->def_vrf_id; 821 SCTP_ASOC_CREATE_LOCK(inp); 822 SCTP_INP_RLOCK(inp); 823 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 824 SCTP_PCB_FLAGS_UNBOUND) { 825 /* Bind a ephemeral port */ 826 SCTP_INP_RUNLOCK(inp); 827 error = sctp6_bind(so, NULL, p); 828 if (error) { 829 SCTP_ASOC_CREATE_UNLOCK(inp); 830 831 return (error); 832 } 833 SCTP_INP_RLOCK(inp); 834 } 835 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && 836 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) { 837 /* We are already connected AND the TCP model */ 838 SCTP_INP_RUNLOCK(inp); 839 SCTP_ASOC_CREATE_UNLOCK(inp); 840 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EADDRINUSE); 841 return (EADDRINUSE); 842 } 843 #ifdef INET 844 sin6 = (struct sockaddr_in6 *)addr; 845 if (SCTP_IPV6_V6ONLY(inp)) { 846 /* 847 * if IPV6_V6ONLY flag, ignore connections destined to a v4 848 * addr or v4-mapped addr 849 */ 850 if (addr->sa_family == AF_INET) { 851 SCTP_INP_RUNLOCK(inp); 852 SCTP_ASOC_CREATE_UNLOCK(inp); 853 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 854 return (EINVAL); 855 } 856 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 857 SCTP_INP_RUNLOCK(inp); 858 SCTP_ASOC_CREATE_UNLOCK(inp); 859 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 860 return (EINVAL); 861 } 862 } 863 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 864 /* convert v4-mapped into v4 addr */ 865 in6_sin6_2_sin(&store.sin, sin6); 866 addr = &store.sa; 867 } 868 #endif /* INET */ 869 /* Now do we connect? */ 870 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 871 stcb = LIST_FIRST(&inp->sctp_asoc_list); 872 if (stcb) { 873 SCTP_TCB_LOCK(stcb); 874 } 875 SCTP_INP_RUNLOCK(inp); 876 } else { 877 SCTP_INP_RUNLOCK(inp); 878 SCTP_INP_WLOCK(inp); 879 SCTP_INP_INCR_REF(inp); 880 SCTP_INP_WUNLOCK(inp); 881 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL); 882 if (stcb == NULL) { 883 SCTP_INP_WLOCK(inp); 884 SCTP_INP_DECR_REF(inp); 885 SCTP_INP_WUNLOCK(inp); 886 } 887 } 888 889 if (stcb != NULL) { 890 /* Already have or am bring up an association */ 891 SCTP_ASOC_CREATE_UNLOCK(inp); 892 SCTP_TCB_UNLOCK(stcb); 893 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EALREADY); 894 return (EALREADY); 895 } 896 /* We are GOOD to go */ 897 stcb = sctp_aloc_assoc(inp, addr, &error, 0, vrf_id, 898 inp->sctp_ep.pre_open_stream_count, 899 inp->sctp_ep.port, p, 900 SCTP_INITIALIZE_AUTH_PARAMS); 901 SCTP_ASOC_CREATE_UNLOCK(inp); 902 if (stcb == NULL) { 903 /* Gak! no memory */ 904 return (error); 905 } 906 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { 907 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; 908 /* Set the connected flag so we can queue data */ 909 soisconnecting(so); 910 } 911 SCTP_SET_STATE(stcb, SCTP_STATE_COOKIE_WAIT); 912 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); 913 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED); 914 SCTP_TCB_UNLOCK(stcb); 915 return (error); 916 } 917 918 static int 919 sctp6_getaddr(struct socket *so, struct sockaddr **addr) 920 { 921 struct sockaddr_in6 *sin6; 922 struct sctp_inpcb *inp; 923 uint32_t vrf_id; 924 struct sctp_ifa *sctp_ifa; 925 926 int error; 927 928 /* 929 * Do the malloc first in case it blocks. 930 */ 931 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof(*sin6)); 932 if (sin6 == NULL) 933 return (ENOMEM); 934 sin6->sin6_family = AF_INET6; 935 sin6->sin6_len = sizeof(*sin6); 936 937 inp = (struct sctp_inpcb *)so->so_pcb; 938 if (inp == NULL) { 939 SCTP_FREE_SONAME(sin6); 940 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 941 return (ECONNRESET); 942 } 943 SCTP_INP_RLOCK(inp); 944 sin6->sin6_port = inp->sctp_lport; 945 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 946 /* For the bound all case you get back 0 */ 947 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 948 struct sctp_tcb *stcb; 949 struct sockaddr_in6 *sin_a6; 950 struct sctp_nets *net; 951 int fnd; 952 953 stcb = LIST_FIRST(&inp->sctp_asoc_list); 954 if (stcb == NULL) { 955 SCTP_INP_RUNLOCK(inp); 956 SCTP_FREE_SONAME(sin6); 957 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 958 return (ENOENT); 959 } 960 fnd = 0; 961 sin_a6 = NULL; 962 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 963 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr; 964 if (sin_a6 == NULL) 965 /* this will make coverity happy */ 966 continue; 967 968 if (sin_a6->sin6_family == AF_INET6) { 969 fnd = 1; 970 break; 971 } 972 } 973 if ((!fnd) || (sin_a6 == NULL)) { 974 /* punt */ 975 SCTP_INP_RUNLOCK(inp); 976 SCTP_FREE_SONAME(sin6); 977 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 978 return (ENOENT); 979 } 980 vrf_id = inp->def_vrf_id; 981 sctp_ifa = sctp_source_address_selection(inp, stcb, (sctp_route_t *)&net->ro, net, 0, vrf_id); 982 if (sctp_ifa) { 983 sin6->sin6_addr = sctp_ifa->address.sin6.sin6_addr; 984 } 985 } else { 986 /* For the bound all case you get back 0 */ 987 memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr)); 988 } 989 } else { 990 /* Take the first IPv6 address in the list */ 991 struct sctp_laddr *laddr; 992 int fnd = 0; 993 994 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { 995 if (laddr->ifa->address.sa.sa_family == AF_INET6) { 996 struct sockaddr_in6 *sin_a; 997 998 sin_a = &laddr->ifa->address.sin6; 999 sin6->sin6_addr = sin_a->sin6_addr; 1000 fnd = 1; 1001 break; 1002 } 1003 } 1004 if (!fnd) { 1005 SCTP_FREE_SONAME(sin6); 1006 SCTP_INP_RUNLOCK(inp); 1007 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 1008 return (ENOENT); 1009 } 1010 } 1011 SCTP_INP_RUNLOCK(inp); 1012 /* Scoping things for v6 */ 1013 if ((error = sa6_recoverscope(sin6)) != 0) { 1014 SCTP_FREE_SONAME(sin6); 1015 return (error); 1016 } 1017 (*addr) = (struct sockaddr *)sin6; 1018 return (0); 1019 } 1020 1021 static int 1022 sctp6_peeraddr(struct socket *so, struct sockaddr **addr) 1023 { 1024 struct sockaddr_in6 *sin6; 1025 int fnd; 1026 struct sockaddr_in6 *sin_a6; 1027 struct sctp_inpcb *inp; 1028 struct sctp_tcb *stcb; 1029 struct sctp_nets *net; 1030 int error; 1031 1032 /* Do the malloc first in case it blocks. */ 1033 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 1034 if (sin6 == NULL) 1035 return (ENOMEM); 1036 sin6->sin6_family = AF_INET6; 1037 sin6->sin6_len = sizeof(*sin6); 1038 1039 inp = (struct sctp_inpcb *)so->so_pcb; 1040 if ((inp == NULL) || 1041 ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) { 1042 /* UDP type and listeners will drop out here */ 1043 SCTP_FREE_SONAME(sin6); 1044 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOTCONN); 1045 return (ENOTCONN); 1046 } 1047 SCTP_INP_RLOCK(inp); 1048 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1049 if (stcb) { 1050 SCTP_TCB_LOCK(stcb); 1051 } 1052 SCTP_INP_RUNLOCK(inp); 1053 if (stcb == NULL) { 1054 SCTP_FREE_SONAME(sin6); 1055 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 1056 return (ECONNRESET); 1057 } 1058 fnd = 0; 1059 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1060 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr; 1061 if (sin_a6->sin6_family == AF_INET6) { 1062 fnd = 1; 1063 sin6->sin6_port = stcb->rport; 1064 sin6->sin6_addr = sin_a6->sin6_addr; 1065 break; 1066 } 1067 } 1068 SCTP_TCB_UNLOCK(stcb); 1069 if (!fnd) { 1070 /* No IPv4 address */ 1071 SCTP_FREE_SONAME(sin6); 1072 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 1073 return (ENOENT); 1074 } 1075 if ((error = sa6_recoverscope(sin6)) != 0) { 1076 SCTP_FREE_SONAME(sin6); 1077 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, error); 1078 return (error); 1079 } 1080 *addr = (struct sockaddr *)sin6; 1081 return (0); 1082 } 1083 1084 static int 1085 sctp6_in6getaddr(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_getaddr(so, nam); 1097 #ifdef INET 1098 if (error) { 1099 struct sockaddr_in6 *sin6; 1100 1101 /* try v4 next if v6 failed */ 1102 error = sctp_ingetaddr(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 1120 static int 1121 sctp6_getpeeraddr(struct socket *so, struct sockaddr **nam) 1122 { 1123 struct inpcb *inp = sotoinpcb(so); 1124 int error; 1125 1126 if (inp == NULL) { 1127 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1128 return (EINVAL); 1129 } 1130 1131 /* allow v6 addresses precedence */ 1132 error = sctp6_peeraddr(so, nam); 1133 #ifdef INET 1134 if (error) { 1135 struct sockaddr_in6 *sin6; 1136 1137 /* try v4 next if v6 failed */ 1138 error = sctp_peeraddr(so, nam); 1139 if (error) { 1140 return (error); 1141 } 1142 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 1143 if (sin6 == NULL) { 1144 SCTP_FREE_SONAME(*nam); 1145 return (ENOMEM); 1146 } 1147 in6_sin_2_v4mapsin6((struct sockaddr_in *)*nam, sin6); 1148 SCTP_FREE_SONAME(*nam); 1149 *nam = (struct sockaddr *)sin6; 1150 } 1151 #endif 1152 return (error); 1153 } 1154 1155 struct pr_usrreqs sctp6_usrreqs = { 1156 .pru_abort = sctp6_abort, 1157 .pru_accept = sctp_accept, 1158 .pru_attach = sctp6_attach, 1159 .pru_bind = sctp6_bind, 1160 .pru_connect = sctp6_connect, 1161 .pru_control = in6_control, 1162 .pru_close = sctp6_close, 1163 .pru_detach = sctp6_close, 1164 .pru_sopoll = sopoll_generic, 1165 .pru_flush = sctp_flush, 1166 .pru_disconnect = sctp6_disconnect, 1167 .pru_listen = sctp_listen, 1168 .pru_peeraddr = sctp6_getpeeraddr, 1169 .pru_send = sctp6_send, 1170 .pru_shutdown = sctp_shutdown, 1171 .pru_sockaddr = sctp6_in6getaddr, 1172 .pru_sosend = sctp_sosend, 1173 .pru_soreceive = sctp_soreceive 1174 }; 1175 1176 #endif 1177