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 extern struct protosw inetsw[]; 61 62 int 63 sctp6_input_with_port(struct mbuf **i_pak, int *offp, uint16_t port) 64 { 65 struct mbuf *m; 66 int iphlen; 67 uint32_t vrf_id; 68 uint8_t ecn_bits; 69 struct sockaddr_in6 src, dst; 70 struct ip6_hdr *ip6; 71 struct sctphdr *sh; 72 struct sctp_chunkhdr *ch; 73 int length, offset; 74 uint8_t compute_crc; 75 uint32_t mflowid; 76 uint8_t mflowtype; 77 uint16_t fibnum; 78 79 iphlen = *offp; 80 if (SCTP_GET_PKT_VRFID(*i_pak, vrf_id)) { 81 SCTP_RELEASE_PKT(*i_pak); 82 return (IPPROTO_DONE); 83 } 84 m = SCTP_HEADER_TO_CHAIN(*i_pak); 85 #ifdef SCTP_MBUF_LOGGING 86 /* Log in any input mbufs */ 87 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) { 88 sctp_log_mbc(m, SCTP_MBUF_INPUT); 89 } 90 #endif 91 #ifdef SCTP_PACKET_LOGGING 92 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LAST_PACKET_TRACING) { 93 sctp_packet_log(m); 94 } 95 #endif 96 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD, 97 "sctp6_input(): Packet of length %d received on %s with csum_flags 0x%b.\n", 98 m->m_pkthdr.len, 99 if_name(m->m_pkthdr.rcvif), 100 (int)m->m_pkthdr.csum_flags, CSUM_BITS); 101 mflowid = m->m_pkthdr.flowid; 102 mflowtype = M_HASHTYPE_GET(m); 103 fibnum = M_GETFIB(m); 104 SCTP_STAT_INCR(sctps_recvpackets); 105 SCTP_STAT_INCR_COUNTER64(sctps_inpackets); 106 /* Get IP, SCTP, and first chunk header together in the first mbuf. */ 107 offset = iphlen + sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr); 108 ip6 = mtod(m, struct ip6_hdr *); 109 IP6_EXTHDR_GET(sh, struct sctphdr *, m, iphlen, 110 (int)(sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr))); 111 if (sh == NULL) { 112 SCTP_STAT_INCR(sctps_hdrops); 113 return (IPPROTO_DONE); 114 } 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 = ((ntohl(ip6->ip6_flow) >> 20) & 0x000000ff); 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 } 166 167 168 int 169 sctp6_input(struct mbuf **i_pak, int *offp, int proto SCTP_UNUSED) 170 { 171 return (sctp6_input_with_port(i_pak, offp, 0)); 172 } 173 174 void 175 sctp6_notify(struct sctp_inpcb *inp, 176 struct sctp_tcb *stcb, 177 struct sctp_nets *net, 178 uint8_t icmp6_type, 179 uint8_t icmp6_code, 180 uint32_t next_mtu) 181 { 182 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 183 struct socket *so; 184 #endif 185 int timer_stopped; 186 187 switch (icmp6_type) { 188 case ICMP6_DST_UNREACH: 189 if ((icmp6_code == ICMP6_DST_UNREACH_NOROUTE) || 190 (icmp6_code == ICMP6_DST_UNREACH_ADMIN) || 191 (icmp6_code == ICMP6_DST_UNREACH_BEYONDSCOPE) || 192 (icmp6_code == ICMP6_DST_UNREACH_ADDR)) { 193 /* Mark the net unreachable. */ 194 if (net->dest_state & SCTP_ADDR_REACHABLE) { 195 /* Ok that destination is not reachable */ 196 net->dest_state &= ~SCTP_ADDR_REACHABLE; 197 net->dest_state &= ~SCTP_ADDR_PF; 198 sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN, 199 stcb, 0, (void *)net, SCTP_SO_NOT_LOCKED); 200 } 201 } 202 SCTP_TCB_UNLOCK(stcb); 203 break; 204 case ICMP6_PARAM_PROB: 205 /* Treat it like an ABORT. */ 206 if (icmp6_code == ICMP6_PARAMPROB_NEXTHEADER) { 207 sctp_abort_notification(stcb, 1, 0, NULL, SCTP_SO_NOT_LOCKED); 208 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 209 so = SCTP_INP_SO(inp); 210 atomic_add_int(&stcb->asoc.refcnt, 1); 211 SCTP_TCB_UNLOCK(stcb); 212 SCTP_SOCKET_LOCK(so, 1); 213 SCTP_TCB_LOCK(stcb); 214 atomic_subtract_int(&stcb->asoc.refcnt, 1); 215 #endif 216 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, 217 SCTP_FROM_SCTP_USRREQ + SCTP_LOC_2); 218 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 219 SCTP_SOCKET_UNLOCK(so, 1); 220 #endif 221 } else { 222 SCTP_TCB_UNLOCK(stcb); 223 } 224 break; 225 case ICMP6_PACKET_TOO_BIG: 226 if ((net->dest_state & SCTP_ADDR_NO_PMTUD) == 0) { 227 SCTP_TCB_UNLOCK(stcb); 228 break; 229 } 230 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) { 231 timer_stopped = 1; 232 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net, 233 SCTP_FROM_SCTP_USRREQ + SCTP_LOC_1); 234 } else { 235 timer_stopped = 0; 236 } 237 /* Update the path MTU. */ 238 if (net->port) { 239 next_mtu -= sizeof(struct udphdr); 240 } 241 if (net->mtu > next_mtu) { 242 net->mtu = next_mtu; 243 } 244 /* Update the association MTU */ 245 if (stcb->asoc.smallest_mtu > next_mtu) { 246 sctp_pathmtu_adjustment(stcb, next_mtu); 247 } 248 /* Finally, start the PMTU timer if it was running before. */ 249 if (timer_stopped) { 250 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net); 251 } 252 SCTP_TCB_UNLOCK(stcb); 253 break; 254 default: 255 SCTP_TCB_UNLOCK(stcb); 256 break; 257 } 258 } 259 260 void 261 sctp6_ctlinput(int cmd, struct sockaddr *pktdst, void *d) 262 { 263 struct ip6ctlparam *ip6cp; 264 struct sctp_inpcb *inp; 265 struct sctp_tcb *stcb; 266 struct sctp_nets *net; 267 struct sctphdr sh; 268 struct sockaddr_in6 src, dst; 269 270 if (pktdst->sa_family != AF_INET6 || 271 pktdst->sa_len != sizeof(struct sockaddr_in6)) { 272 return; 273 } 274 if ((unsigned)cmd >= PRC_NCMDS) { 275 return; 276 } 277 if (PRC_IS_REDIRECT(cmd)) { 278 d = NULL; 279 } else if (inet6ctlerrmap[cmd] == 0) { 280 return; 281 } 282 /* If the parameter is from icmp6, decode it. */ 283 if (d != NULL) { 284 ip6cp = (struct ip6ctlparam *)d; 285 } else { 286 ip6cp = (struct ip6ctlparam *)NULL; 287 } 288 289 if (ip6cp != NULL) { 290 /* 291 * XXX: We assume that when IPV6 is non NULL, M and OFF are 292 * valid. 293 */ 294 if (ip6cp->ip6c_m == NULL) { 295 return; 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 /* Copy out the port numbers and the verification tag. */ 306 memset(&sh, 0, sizeof(sh)); 307 m_copydata(ip6cp->ip6c_m, 308 ip6cp->ip6c_off, 309 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t), 310 (caddr_t)&sh); 311 memset(&src, 0, sizeof(struct sockaddr_in6)); 312 src.sin6_family = AF_INET6; 313 src.sin6_len = sizeof(struct sockaddr_in6); 314 src.sin6_port = sh.src_port; 315 src.sin6_addr = ip6cp->ip6c_ip6->ip6_src; 316 if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) { 317 return; 318 } 319 memset(&dst, 0, sizeof(struct sockaddr_in6)); 320 dst.sin6_family = AF_INET6; 321 dst.sin6_len = sizeof(struct sockaddr_in6); 322 dst.sin6_port = sh.dest_port; 323 dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst; 324 if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) { 325 return; 326 } 327 inp = NULL; 328 net = NULL; 329 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst, 330 (struct sockaddr *)&src, 331 &inp, &net, 1, SCTP_DEFAULT_VRFID); 332 if ((stcb != NULL) && 333 (net != NULL) && 334 (inp != NULL)) { 335 /* Check the verification tag */ 336 if (ntohl(sh.v_tag) != 0) { 337 /* 338 * This must be the verification tag used 339 * for sending out packets. We don't 340 * consider packets reflecting the 341 * verification tag. 342 */ 343 if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) { 344 SCTP_TCB_UNLOCK(stcb); 345 return; 346 } 347 } else { 348 if (ip6cp->ip6c_m->m_pkthdr.len >= 349 ip6cp->ip6c_off + sizeof(struct sctphdr) + 350 sizeof(struct sctp_chunkhdr) + 351 offsetof(struct sctp_init, a_rwnd)) { 352 /* 353 * In this case we can check if we 354 * got an INIT chunk and if the 355 * initiate tag matches. 356 */ 357 uint32_t initiate_tag; 358 uint8_t chunk_type; 359 360 m_copydata(ip6cp->ip6c_m, 361 ip6cp->ip6c_off + 362 sizeof(struct sctphdr), 363 sizeof(uint8_t), 364 (caddr_t)&chunk_type); 365 m_copydata(ip6cp->ip6c_m, 366 ip6cp->ip6c_off + 367 sizeof(struct sctphdr) + 368 sizeof(struct sctp_chunkhdr), 369 sizeof(uint32_t), 370 (caddr_t)&initiate_tag); 371 if ((chunk_type != SCTP_INITIATION) || 372 (ntohl(initiate_tag) != stcb->asoc.my_vtag)) { 373 SCTP_TCB_UNLOCK(stcb); 374 return; 375 } 376 } else { 377 SCTP_TCB_UNLOCK(stcb); 378 return; 379 } 380 } 381 sctp6_notify(inp, stcb, net, 382 ip6cp->ip6c_icmp6->icmp6_type, 383 ip6cp->ip6c_icmp6->icmp6_code, 384 ntohl(ip6cp->ip6c_icmp6->icmp6_mtu)); 385 } else { 386 if ((stcb == NULL) && (inp != NULL)) { 387 /* reduce inp's ref-count */ 388 SCTP_INP_WLOCK(inp); 389 SCTP_INP_DECR_REF(inp); 390 SCTP_INP_WUNLOCK(inp); 391 } 392 if (stcb) { 393 SCTP_TCB_UNLOCK(stcb); 394 } 395 } 396 } 397 } 398 399 /* 400 * this routine can probably be collasped into the one in sctp_userreq.c 401 * since they do the same thing and now we lookup with a sockaddr 402 */ 403 static int 404 sctp6_getcred(SYSCTL_HANDLER_ARGS) 405 { 406 struct xucred xuc; 407 struct sockaddr_in6 addrs[2]; 408 struct sctp_inpcb *inp; 409 struct sctp_nets *net; 410 struct sctp_tcb *stcb; 411 int error; 412 uint32_t vrf_id; 413 414 vrf_id = SCTP_DEFAULT_VRFID; 415 416 error = priv_check(req->td, PRIV_NETINET_GETCRED); 417 if (error) 418 return (error); 419 420 if (req->newlen != sizeof(addrs)) { 421 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 422 return (EINVAL); 423 } 424 if (req->oldlen != sizeof(struct ucred)) { 425 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 426 return (EINVAL); 427 } 428 error = SYSCTL_IN(req, addrs, sizeof(addrs)); 429 if (error) 430 return (error); 431 432 stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[1]), 433 sin6tosa(&addrs[0]), 434 &inp, &net, 1, vrf_id); 435 if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) { 436 if ((inp != NULL) && (stcb == NULL)) { 437 /* reduce ref-count */ 438 SCTP_INP_WLOCK(inp); 439 SCTP_INP_DECR_REF(inp); 440 goto cred_can_cont; 441 } 442 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 443 error = ENOENT; 444 goto out; 445 } 446 SCTP_TCB_UNLOCK(stcb); 447 /* 448 * We use the write lock here, only since in the error leg we need 449 * it. If we used RLOCK, then we would have to 450 * wlock/decr/unlock/rlock. Which in theory could create a hole. 451 * Better to use higher wlock. 452 */ 453 SCTP_INP_WLOCK(inp); 454 cred_can_cont: 455 error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket); 456 if (error) { 457 SCTP_INP_WUNLOCK(inp); 458 goto out; 459 } 460 cru2x(inp->sctp_socket->so_cred, &xuc); 461 SCTP_INP_WUNLOCK(inp); 462 error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred)); 463 out: 464 return (error); 465 } 466 467 SYSCTL_PROC(_net_inet6_sctp6, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW, 468 0, 0, 469 sctp6_getcred, "S,ucred", "Get the ucred of a SCTP6 connection"); 470 471 472 /* This is the same as the sctp_abort() could be made common */ 473 static void 474 sctp6_abort(struct socket *so) 475 { 476 struct sctp_inpcb *inp; 477 uint32_t flags; 478 479 inp = (struct sctp_inpcb *)so->so_pcb; 480 if (inp == NULL) { 481 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 482 return; 483 } 484 sctp_must_try_again: 485 flags = inp->sctp_flags; 486 #ifdef SCTP_LOG_CLOSING 487 sctp_log_closing(inp, NULL, 17); 488 #endif 489 if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) && 490 (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) { 491 #ifdef SCTP_LOG_CLOSING 492 sctp_log_closing(inp, NULL, 16); 493 #endif 494 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 495 SCTP_CALLED_AFTER_CMPSET_OFCLOSE); 496 SOCK_LOCK(so); 497 SCTP_SB_CLEAR(so->so_snd); 498 /* 499 * same for the rcv ones, they are only here for the 500 * accounting/select. 501 */ 502 SCTP_SB_CLEAR(so->so_rcv); 503 /* Now null out the reference, we are completely detached. */ 504 so->so_pcb = NULL; 505 SOCK_UNLOCK(so); 506 } else { 507 flags = inp->sctp_flags; 508 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) { 509 goto sctp_must_try_again; 510 } 511 } 512 return; 513 } 514 515 static int 516 sctp6_attach(struct socket *so, int proto SCTP_UNUSED, struct thread *p SCTP_UNUSED) 517 { 518 struct in6pcb *inp6; 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 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 529 error = SCTP_SORESERVE(so, SCTP_BASE_SYSCTL(sctp_sendspace), SCTP_BASE_SYSCTL(sctp_recvspace)); 530 if (error) 531 return (error); 532 } 533 error = sctp_inpcb_alloc(so, vrf_id); 534 if (error) 535 return (error); 536 inp = (struct sctp_inpcb *)so->so_pcb; 537 SCTP_INP_WLOCK(inp); 538 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUND_V6; /* I'm v6! */ 539 inp6 = (struct in6pcb *)inp; 540 541 inp6->inp_vflag |= INP_IPV6; 542 inp6->in6p_hops = -1; /* use kernel default */ 543 inp6->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 inp6->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 struct in6pcb *inp6; 561 int error; 562 563 inp = (struct sctp_inpcb *)so->so_pcb; 564 if (inp == NULL) { 565 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 566 return (EINVAL); 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 inp6 = (struct in6pcb *)inp; 592 inp6->inp_vflag &= ~INP_IPV4; 593 inp6->inp_vflag |= INP_IPV6; 594 if ((addr != NULL) && (SCTP_IPV6_V6ONLY(inp6) == 0)) { 595 switch (addr->sa_family) { 596 #ifdef INET 597 case AF_INET: 598 /* binding v4 addr to v6 socket, so reset flags */ 599 inp6->inp_vflag |= INP_IPV4; 600 inp6->inp_vflag &= ~INP_IPV6; 601 break; 602 #endif 603 #ifdef INET6 604 case AF_INET6: 605 { 606 struct sockaddr_in6 *sin6_p; 607 608 sin6_p = (struct sockaddr_in6 *)addr; 609 610 if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr)) { 611 inp6->inp_vflag |= INP_IPV4; 612 } 613 #ifdef INET 614 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { 615 struct sockaddr_in sin; 616 617 in6_sin6_2_sin(&sin, sin6_p); 618 inp6->inp_vflag |= INP_IPV4; 619 inp6->inp_vflag &= ~INP_IPV6; 620 error = sctp_inpcb_bind(so, (struct sockaddr *)&sin, NULL, p); 621 return (error); 622 } 623 #endif 624 break; 625 } 626 #endif 627 default: 628 break; 629 } 630 } else if (addr != NULL) { 631 struct sockaddr_in6 *sin6_p; 632 633 /* IPV6_V6ONLY socket */ 634 #ifdef INET 635 if (addr->sa_family == AF_INET) { 636 /* can't bind v4 addr to v6 only socket! */ 637 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 638 return (EINVAL); 639 } 640 #endif 641 sin6_p = (struct sockaddr_in6 *)addr; 642 643 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { 644 /* can't bind v4-mapped addrs either! */ 645 /* NOTE: we don't support SIIT */ 646 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 647 return (EINVAL); 648 } 649 } 650 error = sctp_inpcb_bind(so, addr, NULL, p); 651 return (error); 652 } 653 654 655 static void 656 sctp6_close(struct socket *so) 657 { 658 sctp_close(so); 659 } 660 661 /* This could be made common with sctp_detach() since they are identical */ 662 663 static 664 int 665 sctp6_disconnect(struct socket *so) 666 { 667 return (sctp_disconnect(so)); 668 } 669 670 671 int 672 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, 673 struct mbuf *control, struct thread *p); 674 675 676 static int 677 sctp6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, 678 struct mbuf *control, struct thread *p) 679 { 680 struct sctp_inpcb *inp; 681 struct in6pcb *inp6; 682 683 #ifdef INET 684 struct sockaddr_in6 *sin6; 685 #endif /* INET */ 686 /* No SPL needed since sctp_output does this */ 687 688 inp = (struct sctp_inpcb *)so->so_pcb; 689 if (inp == NULL) { 690 if (control) { 691 SCTP_RELEASE_PKT(control); 692 control = NULL; 693 } 694 SCTP_RELEASE_PKT(m); 695 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 696 return (EINVAL); 697 } 698 inp6 = (struct in6pcb *)inp; 699 /* 700 * For the TCP model we may get a NULL addr, if we are a connected 701 * socket thats ok. 702 */ 703 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) && 704 (addr == NULL)) { 705 goto connected_type; 706 } 707 if (addr == NULL) { 708 SCTP_RELEASE_PKT(m); 709 if (control) { 710 SCTP_RELEASE_PKT(control); 711 control = NULL; 712 } 713 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EDESTADDRREQ); 714 return (EDESTADDRREQ); 715 } 716 #ifdef INET 717 sin6 = (struct sockaddr_in6 *)addr; 718 if (SCTP_IPV6_V6ONLY(inp6)) { 719 /* 720 * if IPV6_V6ONLY flag, we discard datagrams destined to a 721 * v4 addr or v4-mapped addr 722 */ 723 if (addr->sa_family == AF_INET) { 724 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 725 return (EINVAL); 726 } 727 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 728 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 729 return (EINVAL); 730 } 731 } 732 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 733 struct sockaddr_in sin; 734 735 /* convert v4-mapped into v4 addr and send */ 736 in6_sin6_2_sin(&sin, sin6); 737 return (sctp_sendm(so, flags, m, (struct sockaddr *)&sin, control, p)); 738 } 739 #endif /* INET */ 740 connected_type: 741 /* now what about control */ 742 if (control) { 743 if (inp->control) { 744 SCTP_PRINTF("huh? control set?\n"); 745 SCTP_RELEASE_PKT(inp->control); 746 inp->control = NULL; 747 } 748 inp->control = control; 749 } 750 /* Place the data */ 751 if (inp->pkt) { 752 SCTP_BUF_NEXT(inp->pkt_last) = m; 753 inp->pkt_last = m; 754 } else { 755 inp->pkt_last = inp->pkt = m; 756 } 757 if ( 758 /* FreeBSD and MacOSX uses a flag passed */ 759 ((flags & PRUS_MORETOCOME) == 0) 760 ) { 761 /* 762 * note with the current version this code will only be used 763 * by OpenBSD, NetBSD and FreeBSD have methods for 764 * re-defining sosend() to use sctp_sosend(). One can 765 * optionaly switch back to this code (by changing back the 766 * defininitions but this is not advisable. 767 */ 768 int ret; 769 770 ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags); 771 inp->pkt = NULL; 772 inp->control = NULL; 773 return (ret); 774 } else { 775 return (0); 776 } 777 } 778 779 static int 780 sctp6_connect(struct socket *so, struct sockaddr *addr, struct thread *p) 781 { 782 uint32_t vrf_id; 783 int error = 0; 784 struct sctp_inpcb *inp; 785 struct sctp_tcb *stcb; 786 #ifdef INET 787 struct in6pcb *inp6; 788 struct sockaddr_in6 *sin6; 789 union sctp_sockstore store; 790 #endif 791 792 #ifdef INET 793 inp6 = (struct in6pcb *)so->so_pcb; 794 #endif 795 inp = (struct sctp_inpcb *)so->so_pcb; 796 if (inp == NULL) { 797 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 798 return (ECONNRESET); /* I made the same as TCP since we are 799 * not setup? */ 800 } 801 if (addr == NULL) { 802 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 803 return (EINVAL); 804 } 805 switch (addr->sa_family) { 806 #ifdef INET 807 case AF_INET: 808 if (addr->sa_len != sizeof(struct sockaddr_in)) { 809 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 810 return (EINVAL); 811 } 812 break; 813 #endif 814 #ifdef INET6 815 case AF_INET6: 816 if (addr->sa_len != sizeof(struct sockaddr_in6)) { 817 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 818 return (EINVAL); 819 } 820 break; 821 #endif 822 default: 823 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 824 return (EINVAL); 825 } 826 827 vrf_id = inp->def_vrf_id; 828 SCTP_ASOC_CREATE_LOCK(inp); 829 SCTP_INP_RLOCK(inp); 830 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 831 SCTP_PCB_FLAGS_UNBOUND) { 832 /* Bind a ephemeral port */ 833 SCTP_INP_RUNLOCK(inp); 834 error = sctp6_bind(so, NULL, p); 835 if (error) { 836 SCTP_ASOC_CREATE_UNLOCK(inp); 837 838 return (error); 839 } 840 SCTP_INP_RLOCK(inp); 841 } 842 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && 843 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) { 844 /* We are already connected AND the TCP model */ 845 SCTP_INP_RUNLOCK(inp); 846 SCTP_ASOC_CREATE_UNLOCK(inp); 847 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EADDRINUSE); 848 return (EADDRINUSE); 849 } 850 #ifdef INET 851 sin6 = (struct sockaddr_in6 *)addr; 852 if (SCTP_IPV6_V6ONLY(inp6)) { 853 /* 854 * if IPV6_V6ONLY flag, ignore connections destined to a v4 855 * addr or v4-mapped addr 856 */ 857 if (addr->sa_family == AF_INET) { 858 SCTP_INP_RUNLOCK(inp); 859 SCTP_ASOC_CREATE_UNLOCK(inp); 860 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 861 return (EINVAL); 862 } 863 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 864 SCTP_INP_RUNLOCK(inp); 865 SCTP_ASOC_CREATE_UNLOCK(inp); 866 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 867 return (EINVAL); 868 } 869 } 870 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 871 /* convert v4-mapped into v4 addr */ 872 in6_sin6_2_sin(&store.sin, sin6); 873 addr = &store.sa; 874 } 875 #endif /* INET */ 876 /* Now do we connect? */ 877 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 878 stcb = LIST_FIRST(&inp->sctp_asoc_list); 879 if (stcb) { 880 SCTP_TCB_LOCK(stcb); 881 } 882 SCTP_INP_RUNLOCK(inp); 883 } else { 884 SCTP_INP_RUNLOCK(inp); 885 SCTP_INP_WLOCK(inp); 886 SCTP_INP_INCR_REF(inp); 887 SCTP_INP_WUNLOCK(inp); 888 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL); 889 if (stcb == NULL) { 890 SCTP_INP_WLOCK(inp); 891 SCTP_INP_DECR_REF(inp); 892 SCTP_INP_WUNLOCK(inp); 893 } 894 } 895 896 if (stcb != NULL) { 897 /* Already have or am bring up an association */ 898 SCTP_ASOC_CREATE_UNLOCK(inp); 899 SCTP_TCB_UNLOCK(stcb); 900 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EALREADY); 901 return (EALREADY); 902 } 903 /* We are GOOD to go */ 904 stcb = sctp_aloc_assoc(inp, addr, &error, 0, vrf_id, 905 inp->sctp_ep.pre_open_stream_count, 906 inp->sctp_ep.port, p); 907 SCTP_ASOC_CREATE_UNLOCK(inp); 908 if (stcb == NULL) { 909 /* Gak! no memory */ 910 return (error); 911 } 912 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { 913 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; 914 /* Set the connected flag so we can queue data */ 915 soisconnecting(so); 916 } 917 stcb->asoc.state = SCTP_STATE_COOKIE_WAIT; 918 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); 919 920 /* initialize authentication parameters for the assoc */ 921 sctp_initialize_auth_params(inp, stcb); 922 923 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED); 924 SCTP_TCB_UNLOCK(stcb); 925 return (error); 926 } 927 928 static int 929 sctp6_getaddr(struct socket *so, struct sockaddr **addr) 930 { 931 struct sockaddr_in6 *sin6; 932 struct sctp_inpcb *inp; 933 uint32_t vrf_id; 934 struct sctp_ifa *sctp_ifa; 935 936 int error; 937 938 /* 939 * Do the malloc first in case it blocks. 940 */ 941 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof(*sin6)); 942 if (sin6 == NULL) 943 return (ENOMEM); 944 sin6->sin6_family = AF_INET6; 945 sin6->sin6_len = sizeof(*sin6); 946 947 inp = (struct sctp_inpcb *)so->so_pcb; 948 if (inp == NULL) { 949 SCTP_FREE_SONAME(sin6); 950 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 951 return (ECONNRESET); 952 } 953 SCTP_INP_RLOCK(inp); 954 sin6->sin6_port = inp->sctp_lport; 955 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 956 /* For the bound all case you get back 0 */ 957 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 958 struct sctp_tcb *stcb; 959 struct sockaddr_in6 *sin_a6; 960 struct sctp_nets *net; 961 int fnd; 962 963 stcb = LIST_FIRST(&inp->sctp_asoc_list); 964 if (stcb == NULL) { 965 SCTP_INP_RUNLOCK(inp); 966 SCTP_FREE_SONAME(sin6); 967 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 968 return (ENOENT); 969 } 970 fnd = 0; 971 sin_a6 = NULL; 972 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 973 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr; 974 if (sin_a6 == NULL) 975 /* this will make coverity happy */ 976 continue; 977 978 if (sin_a6->sin6_family == AF_INET6) { 979 fnd = 1; 980 break; 981 } 982 } 983 if ((!fnd) || (sin_a6 == NULL)) { 984 /* punt */ 985 SCTP_INP_RUNLOCK(inp); 986 SCTP_FREE_SONAME(sin6); 987 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 988 return (ENOENT); 989 } 990 vrf_id = inp->def_vrf_id; 991 sctp_ifa = sctp_source_address_selection(inp, stcb, (sctp_route_t *)&net->ro, net, 0, vrf_id); 992 if (sctp_ifa) { 993 sin6->sin6_addr = sctp_ifa->address.sin6.sin6_addr; 994 } 995 } else { 996 /* For the bound all case you get back 0 */ 997 memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr)); 998 } 999 } else { 1000 /* Take the first IPv6 address in the list */ 1001 struct sctp_laddr *laddr; 1002 int fnd = 0; 1003 1004 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { 1005 if (laddr->ifa->address.sa.sa_family == AF_INET6) { 1006 struct sockaddr_in6 *sin_a; 1007 1008 sin_a = &laddr->ifa->address.sin6; 1009 sin6->sin6_addr = sin_a->sin6_addr; 1010 fnd = 1; 1011 break; 1012 } 1013 } 1014 if (!fnd) { 1015 SCTP_FREE_SONAME(sin6); 1016 SCTP_INP_RUNLOCK(inp); 1017 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 1018 return (ENOENT); 1019 } 1020 } 1021 SCTP_INP_RUNLOCK(inp); 1022 /* Scoping things for v6 */ 1023 if ((error = sa6_recoverscope(sin6)) != 0) { 1024 SCTP_FREE_SONAME(sin6); 1025 return (error); 1026 } 1027 (*addr) = (struct sockaddr *)sin6; 1028 return (0); 1029 } 1030 1031 static int 1032 sctp6_peeraddr(struct socket *so, struct sockaddr **addr) 1033 { 1034 struct sockaddr_in6 *sin6; 1035 int fnd; 1036 struct sockaddr_in6 *sin_a6; 1037 struct sctp_inpcb *inp; 1038 struct sctp_tcb *stcb; 1039 struct sctp_nets *net; 1040 int error; 1041 1042 /* Do the malloc first in case it blocks. */ 1043 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 1044 if (sin6 == NULL) 1045 return (ENOMEM); 1046 sin6->sin6_family = AF_INET6; 1047 sin6->sin6_len = sizeof(*sin6); 1048 1049 inp = (struct sctp_inpcb *)so->so_pcb; 1050 if ((inp == NULL) || 1051 ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) { 1052 /* UDP type and listeners will drop out here */ 1053 SCTP_FREE_SONAME(sin6); 1054 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOTCONN); 1055 return (ENOTCONN); 1056 } 1057 SCTP_INP_RLOCK(inp); 1058 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1059 if (stcb) { 1060 SCTP_TCB_LOCK(stcb); 1061 } 1062 SCTP_INP_RUNLOCK(inp); 1063 if (stcb == NULL) { 1064 SCTP_FREE_SONAME(sin6); 1065 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 1066 return (ECONNRESET); 1067 } 1068 fnd = 0; 1069 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1070 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr; 1071 if (sin_a6->sin6_family == AF_INET6) { 1072 fnd = 1; 1073 sin6->sin6_port = stcb->rport; 1074 sin6->sin6_addr = sin_a6->sin6_addr; 1075 break; 1076 } 1077 } 1078 SCTP_TCB_UNLOCK(stcb); 1079 if (!fnd) { 1080 /* No IPv4 address */ 1081 SCTP_FREE_SONAME(sin6); 1082 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 1083 return (ENOENT); 1084 } 1085 if ((error = sa6_recoverscope(sin6)) != 0) { 1086 SCTP_FREE_SONAME(sin6); 1087 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, error); 1088 return (error); 1089 } 1090 *addr = (struct sockaddr *)sin6; 1091 return (0); 1092 } 1093 1094 static int 1095 sctp6_in6getaddr(struct socket *so, struct sockaddr **nam) 1096 { 1097 struct in6pcb *inp6 = sotoin6pcb(so); 1098 int error; 1099 1100 if (inp6 == NULL) { 1101 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1102 return (EINVAL); 1103 } 1104 /* allow v6 addresses precedence */ 1105 error = sctp6_getaddr(so, nam); 1106 #ifdef INET 1107 if (error) { 1108 struct sockaddr_in6 *sin6; 1109 1110 /* try v4 next if v6 failed */ 1111 error = sctp_ingetaddr(so, nam); 1112 if (error) { 1113 return (error); 1114 } 1115 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 1116 if (sin6 == NULL) { 1117 SCTP_FREE_SONAME(*nam); 1118 return (ENOMEM); 1119 } 1120 in6_sin_2_v4mapsin6((struct sockaddr_in *)*nam, sin6); 1121 SCTP_FREE_SONAME(*nam); 1122 *nam = (struct sockaddr *)sin6; 1123 } 1124 #endif 1125 return (error); 1126 } 1127 1128 1129 static int 1130 sctp6_getpeeraddr(struct socket *so, struct sockaddr **nam) 1131 { 1132 struct in6pcb *inp6 = sotoin6pcb(so); 1133 int error; 1134 1135 if (inp6 == NULL) { 1136 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1137 return (EINVAL); 1138 } 1139 /* allow v6 addresses precedence */ 1140 error = sctp6_peeraddr(so, nam); 1141 #ifdef INET 1142 if (error) { 1143 struct sockaddr_in6 *sin6; 1144 1145 /* try v4 next if v6 failed */ 1146 error = sctp_peeraddr(so, nam); 1147 if (error) { 1148 return (error); 1149 } 1150 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 1151 if (sin6 == NULL) { 1152 SCTP_FREE_SONAME(*nam); 1153 return (ENOMEM); 1154 } 1155 in6_sin_2_v4mapsin6((struct sockaddr_in *)*nam, sin6); 1156 SCTP_FREE_SONAME(*nam); 1157 *nam = (struct sockaddr *)sin6; 1158 } 1159 #endif 1160 return (error); 1161 } 1162 1163 struct pr_usrreqs sctp6_usrreqs = { 1164 .pru_abort = sctp6_abort, 1165 .pru_accept = sctp_accept, 1166 .pru_attach = sctp6_attach, 1167 .pru_bind = sctp6_bind, 1168 .pru_connect = sctp6_connect, 1169 .pru_control = in6_control, 1170 .pru_close = sctp6_close, 1171 .pru_detach = sctp6_close, 1172 .pru_sopoll = sopoll_generic, 1173 .pru_flush = sctp_flush, 1174 .pru_disconnect = sctp6_disconnect, 1175 .pru_listen = sctp_listen, 1176 .pru_peeraddr = sctp6_getpeeraddr, 1177 .pru_send = sctp6_send, 1178 .pru_shutdown = sctp_shutdown, 1179 .pru_sockaddr = sctp6_in6getaddr, 1180 .pru_sosend = sctp_sosend, 1181 .pru_soreceive = sctp_soreceive 1182 }; 1183 1184 #endif 1185