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) { 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 } 274 275 if ((unsigned)cmd >= PRC_NCMDS) { 276 return; 277 } 278 if (PRC_IS_REDIRECT(cmd)) { 279 d = NULL; 280 } else if (inet6ctlerrmap[cmd] == 0) { 281 return; 282 } 283 /* If the parameter is from icmp6, decode it. */ 284 if (d != NULL) { 285 ip6cp = (struct ip6ctlparam *)d; 286 } else { 287 ip6cp = (struct ip6ctlparam *)NULL; 288 } 289 290 if (ip6cp != NULL) { 291 /* 292 * XXX: We assume that when IPV6 is non NULL, M and OFF are 293 * valid. 294 */ 295 if (ip6cp->ip6c_m == NULL) { 296 return; 297 } 298 299 /* 300 * Check if we can safely examine the ports and the 301 * verification tag of the SCTP common header. 302 */ 303 if (ip6cp->ip6c_m->m_pkthdr.len < 304 (int32_t)(ip6cp->ip6c_off + offsetof(struct sctphdr, checksum))) { 305 return; 306 } 307 308 /* Copy out the port numbers and the verification tag. */ 309 memset(&sh, 0, sizeof(sh)); 310 m_copydata(ip6cp->ip6c_m, 311 ip6cp->ip6c_off, 312 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t), 313 (caddr_t)&sh); 314 memset(&src, 0, sizeof(struct sockaddr_in6)); 315 src.sin6_family = AF_INET6; 316 src.sin6_len = sizeof(struct sockaddr_in6); 317 src.sin6_port = sh.src_port; 318 src.sin6_addr = ip6cp->ip6c_ip6->ip6_src; 319 if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) { 320 return; 321 } 322 memset(&dst, 0, sizeof(struct sockaddr_in6)); 323 dst.sin6_family = AF_INET6; 324 dst.sin6_len = sizeof(struct sockaddr_in6); 325 dst.sin6_port = sh.dest_port; 326 dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst; 327 if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) { 328 return; 329 } 330 inp = NULL; 331 net = NULL; 332 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst, 333 (struct sockaddr *)&src, 334 &inp, &net, 1, SCTP_DEFAULT_VRFID); 335 if ((stcb != NULL) && 336 (net != NULL) && 337 (inp != NULL)) { 338 /* Check the verification tag */ 339 if (ntohl(sh.v_tag) != 0) { 340 /* 341 * This must be the verification tag used 342 * for sending out packets. We don't 343 * consider packets reflecting the 344 * verification tag. 345 */ 346 if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) { 347 SCTP_TCB_UNLOCK(stcb); 348 return; 349 } 350 } else { 351 if (ip6cp->ip6c_m->m_pkthdr.len >= 352 ip6cp->ip6c_off + sizeof(struct sctphdr) + 353 sizeof(struct sctp_chunkhdr) + 354 offsetof(struct sctp_init, a_rwnd)) { 355 /* 356 * In this case we can check if we 357 * got an INIT chunk and if the 358 * initiate tag matches. 359 */ 360 uint32_t initiate_tag; 361 uint8_t chunk_type; 362 363 m_copydata(ip6cp->ip6c_m, 364 ip6cp->ip6c_off + 365 sizeof(struct sctphdr), 366 sizeof(uint8_t), 367 (caddr_t)&chunk_type); 368 m_copydata(ip6cp->ip6c_m, 369 ip6cp->ip6c_off + 370 sizeof(struct sctphdr) + 371 sizeof(struct sctp_chunkhdr), 372 sizeof(uint32_t), 373 (caddr_t)&initiate_tag); 374 if ((chunk_type != SCTP_INITIATION) || 375 (ntohl(initiate_tag) != stcb->asoc.my_vtag)) { 376 SCTP_TCB_UNLOCK(stcb); 377 return; 378 } 379 } else { 380 SCTP_TCB_UNLOCK(stcb); 381 return; 382 } 383 } 384 sctp6_notify(inp, stcb, net, 385 ip6cp->ip6c_icmp6->icmp6_type, 386 ip6cp->ip6c_icmp6->icmp6_code, 387 ntohl(ip6cp->ip6c_icmp6->icmp6_mtu)); 388 } else { 389 if ((stcb == NULL) && (inp != NULL)) { 390 /* reduce inp's ref-count */ 391 SCTP_INP_WLOCK(inp); 392 SCTP_INP_DECR_REF(inp); 393 SCTP_INP_WUNLOCK(inp); 394 } 395 if (stcb) { 396 SCTP_TCB_UNLOCK(stcb); 397 } 398 } 399 } 400 } 401 402 /* 403 * this routine can probably be collasped into the one in sctp_userreq.c 404 * since they do the same thing and now we lookup with a sockaddr 405 */ 406 static int 407 sctp6_getcred(SYSCTL_HANDLER_ARGS) 408 { 409 struct xucred xuc; 410 struct sockaddr_in6 addrs[2]; 411 struct sctp_inpcb *inp; 412 struct sctp_nets *net; 413 struct sctp_tcb *stcb; 414 int error; 415 uint32_t vrf_id; 416 417 vrf_id = SCTP_DEFAULT_VRFID; 418 419 error = priv_check(req->td, PRIV_NETINET_GETCRED); 420 if (error) 421 return (error); 422 423 if (req->newlen != sizeof(addrs)) { 424 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 425 return (EINVAL); 426 } 427 if (req->oldlen != sizeof(struct ucred)) { 428 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 429 return (EINVAL); 430 } 431 error = SYSCTL_IN(req, addrs, sizeof(addrs)); 432 if (error) 433 return (error); 434 435 stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[1]), 436 sin6tosa(&addrs[0]), 437 &inp, &net, 1, vrf_id); 438 if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) { 439 if ((inp != NULL) && (stcb == NULL)) { 440 /* reduce ref-count */ 441 SCTP_INP_WLOCK(inp); 442 SCTP_INP_DECR_REF(inp); 443 goto cred_can_cont; 444 } 445 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 446 error = ENOENT; 447 goto out; 448 } 449 SCTP_TCB_UNLOCK(stcb); 450 /* 451 * We use the write lock here, only since in the error leg we need 452 * it. If we used RLOCK, then we would have to 453 * wlock/decr/unlock/rlock. Which in theory could create a hole. 454 * Better to use higher wlock. 455 */ 456 SCTP_INP_WLOCK(inp); 457 cred_can_cont: 458 error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket); 459 if (error) { 460 SCTP_INP_WUNLOCK(inp); 461 goto out; 462 } 463 cru2x(inp->sctp_socket->so_cred, &xuc); 464 SCTP_INP_WUNLOCK(inp); 465 error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred)); 466 out: 467 return (error); 468 } 469 470 SYSCTL_PROC(_net_inet6_sctp6, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW, 471 0, 0, 472 sctp6_getcred, "S,ucred", "Get the ucred of a SCTP6 connection"); 473 474 475 /* This is the same as the sctp_abort() could be made common */ 476 static void 477 sctp6_abort(struct socket *so) 478 { 479 struct sctp_inpcb *inp; 480 uint32_t flags; 481 482 inp = (struct sctp_inpcb *)so->so_pcb; 483 if (inp == NULL) { 484 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 485 return; 486 } 487 sctp_must_try_again: 488 flags = inp->sctp_flags; 489 #ifdef SCTP_LOG_CLOSING 490 sctp_log_closing(inp, NULL, 17); 491 #endif 492 if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) && 493 (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) { 494 #ifdef SCTP_LOG_CLOSING 495 sctp_log_closing(inp, NULL, 16); 496 #endif 497 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 498 SCTP_CALLED_AFTER_CMPSET_OFCLOSE); 499 SOCK_LOCK(so); 500 SCTP_SB_CLEAR(so->so_snd); 501 /* 502 * same for the rcv ones, they are only here for the 503 * accounting/select. 504 */ 505 SCTP_SB_CLEAR(so->so_rcv); 506 /* Now null out the reference, we are completely detached. */ 507 so->so_pcb = NULL; 508 SOCK_UNLOCK(so); 509 } else { 510 flags = inp->sctp_flags; 511 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) { 512 goto sctp_must_try_again; 513 } 514 } 515 return; 516 } 517 518 static int 519 sctp6_attach(struct socket *so, int proto SCTP_UNUSED, struct thread *p SCTP_UNUSED) 520 { 521 struct in6pcb *inp6; 522 int error; 523 struct sctp_inpcb *inp; 524 uint32_t vrf_id = SCTP_DEFAULT_VRFID; 525 526 inp = (struct sctp_inpcb *)so->so_pcb; 527 if (inp != NULL) { 528 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 529 return (EINVAL); 530 } 531 532 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 533 error = SCTP_SORESERVE(so, SCTP_BASE_SYSCTL(sctp_sendspace), SCTP_BASE_SYSCTL(sctp_recvspace)); 534 if (error) 535 return (error); 536 } 537 error = sctp_inpcb_alloc(so, vrf_id); 538 if (error) 539 return (error); 540 inp = (struct sctp_inpcb *)so->so_pcb; 541 SCTP_INP_WLOCK(inp); 542 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUND_V6; /* I'm v6! */ 543 inp6 = (struct in6pcb *)inp; 544 545 inp6->inp_vflag |= INP_IPV6; 546 inp6->in6p_hops = -1; /* use kernel default */ 547 inp6->in6p_cksum = -1; /* just to be sure */ 548 #ifdef INET 549 /* 550 * XXX: ugly!! IPv4 TTL initialization is necessary for an IPv6 551 * socket as well, because the socket may be bound to an IPv6 552 * wildcard address, which may match an IPv4-mapped IPv6 address. 553 */ 554 inp6->inp_ip_ttl = MODULE_GLOBAL(ip_defttl); 555 #endif 556 SCTP_INP_WUNLOCK(inp); 557 return (0); 558 } 559 560 static int 561 sctp6_bind(struct socket *so, struct sockaddr *addr, struct thread *p) 562 { 563 struct sctp_inpcb *inp; 564 struct in6pcb *inp6; 565 int error; 566 567 inp = (struct sctp_inpcb *)so->so_pcb; 568 if (inp == NULL) { 569 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 570 return (EINVAL); 571 } 572 573 if (addr) { 574 switch (addr->sa_family) { 575 #ifdef INET 576 case AF_INET: 577 if (addr->sa_len != sizeof(struct sockaddr_in)) { 578 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 579 return (EINVAL); 580 } 581 break; 582 #endif 583 #ifdef INET6 584 case AF_INET6: 585 if (addr->sa_len != sizeof(struct sockaddr_in6)) { 586 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 587 return (EINVAL); 588 } 589 break; 590 #endif 591 default: 592 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 593 return (EINVAL); 594 } 595 } 596 inp6 = (struct in6pcb *)inp; 597 inp6->inp_vflag &= ~INP_IPV4; 598 inp6->inp_vflag |= INP_IPV6; 599 if ((addr != NULL) && (SCTP_IPV6_V6ONLY(inp6) == 0)) { 600 switch (addr->sa_family) { 601 #ifdef INET 602 case AF_INET: 603 /* binding v4 addr to v6 socket, so reset flags */ 604 inp6->inp_vflag |= INP_IPV4; 605 inp6->inp_vflag &= ~INP_IPV6; 606 break; 607 #endif 608 #ifdef INET6 609 case AF_INET6: 610 { 611 struct sockaddr_in6 *sin6_p; 612 613 sin6_p = (struct sockaddr_in6 *)addr; 614 615 if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr)) { 616 inp6->inp_vflag |= INP_IPV4; 617 } 618 #ifdef INET 619 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { 620 struct sockaddr_in sin; 621 622 in6_sin6_2_sin(&sin, sin6_p); 623 inp6->inp_vflag |= INP_IPV4; 624 inp6->inp_vflag &= ~INP_IPV6; 625 error = sctp_inpcb_bind(so, (struct sockaddr *)&sin, NULL, p); 626 return (error); 627 } 628 #endif 629 break; 630 } 631 #endif 632 default: 633 break; 634 } 635 } else if (addr != NULL) { 636 struct sockaddr_in6 *sin6_p; 637 638 /* IPV6_V6ONLY socket */ 639 #ifdef INET 640 if (addr->sa_family == AF_INET) { 641 /* can't bind v4 addr to v6 only socket! */ 642 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 643 return (EINVAL); 644 } 645 #endif 646 sin6_p = (struct sockaddr_in6 *)addr; 647 648 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { 649 /* can't bind v4-mapped addrs either! */ 650 /* NOTE: we don't support SIIT */ 651 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 652 return (EINVAL); 653 } 654 } 655 error = sctp_inpcb_bind(so, addr, NULL, p); 656 return (error); 657 } 658 659 660 static void 661 sctp6_close(struct socket *so) 662 { 663 sctp_close(so); 664 } 665 666 /* This could be made common with sctp_detach() since they are identical */ 667 668 static 669 int 670 sctp6_disconnect(struct socket *so) 671 { 672 return (sctp_disconnect(so)); 673 } 674 675 676 int 677 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, 678 struct mbuf *control, struct thread *p); 679 680 681 static int 682 sctp6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, 683 struct mbuf *control, struct thread *p) 684 { 685 struct sctp_inpcb *inp; 686 struct in6pcb *inp6; 687 688 #ifdef INET 689 struct sockaddr_in6 *sin6; 690 #endif /* INET */ 691 /* No SPL needed since sctp_output does this */ 692 693 inp = (struct sctp_inpcb *)so->so_pcb; 694 if (inp == NULL) { 695 if (control) { 696 SCTP_RELEASE_PKT(control); 697 control = NULL; 698 } 699 SCTP_RELEASE_PKT(m); 700 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 701 return (EINVAL); 702 } 703 inp6 = (struct in6pcb *)inp; 704 /* 705 * For the TCP model we may get a NULL addr, if we are a connected 706 * socket thats ok. 707 */ 708 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) && 709 (addr == NULL)) { 710 goto connected_type; 711 } 712 if (addr == NULL) { 713 SCTP_RELEASE_PKT(m); 714 if (control) { 715 SCTP_RELEASE_PKT(control); 716 control = NULL; 717 } 718 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EDESTADDRREQ); 719 return (EDESTADDRREQ); 720 } 721 #ifdef INET 722 sin6 = (struct sockaddr_in6 *)addr; 723 if (SCTP_IPV6_V6ONLY(inp6)) { 724 /* 725 * if IPV6_V6ONLY flag, we discard datagrams destined to a 726 * v4 addr or v4-mapped addr 727 */ 728 if (addr->sa_family == AF_INET) { 729 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 730 return (EINVAL); 731 } 732 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 733 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 734 return (EINVAL); 735 } 736 } 737 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 738 struct sockaddr_in sin; 739 740 /* convert v4-mapped into v4 addr and send */ 741 in6_sin6_2_sin(&sin, sin6); 742 return (sctp_sendm(so, flags, m, (struct sockaddr *)&sin, control, p)); 743 } 744 #endif /* INET */ 745 connected_type: 746 /* now what about control */ 747 if (control) { 748 if (inp->control) { 749 SCTP_PRINTF("huh? control set?\n"); 750 SCTP_RELEASE_PKT(inp->control); 751 inp->control = NULL; 752 } 753 inp->control = control; 754 } 755 /* Place the data */ 756 if (inp->pkt) { 757 SCTP_BUF_NEXT(inp->pkt_last) = m; 758 inp->pkt_last = m; 759 } else { 760 inp->pkt_last = inp->pkt = m; 761 } 762 if ( 763 /* FreeBSD and MacOSX uses a flag passed */ 764 ((flags & PRUS_MORETOCOME) == 0) 765 ) { 766 /* 767 * note with the current version this code will only be used 768 * by OpenBSD, NetBSD and FreeBSD have methods for 769 * re-defining sosend() to use sctp_sosend(). One can 770 * optionaly switch back to this code (by changing back the 771 * defininitions but this is not advisable. 772 */ 773 int ret; 774 775 ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags); 776 inp->pkt = NULL; 777 inp->control = NULL; 778 return (ret); 779 } else { 780 return (0); 781 } 782 } 783 784 static int 785 sctp6_connect(struct socket *so, struct sockaddr *addr, struct thread *p) 786 { 787 uint32_t vrf_id; 788 int error = 0; 789 struct sctp_inpcb *inp; 790 struct sctp_tcb *stcb; 791 #ifdef INET 792 struct in6pcb *inp6; 793 struct sockaddr_in6 *sin6; 794 union sctp_sockstore store; 795 #endif 796 797 #ifdef INET 798 inp6 = (struct in6pcb *)so->so_pcb; 799 #endif 800 inp = (struct sctp_inpcb *)so->so_pcb; 801 if (inp == NULL) { 802 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 803 return (ECONNRESET); /* I made the same as TCP since we are 804 * not setup? */ 805 } 806 if (addr == NULL) { 807 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 808 return (EINVAL); 809 } 810 switch (addr->sa_family) { 811 #ifdef INET 812 case AF_INET: 813 if (addr->sa_len != sizeof(struct sockaddr_in)) { 814 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 815 return (EINVAL); 816 } 817 break; 818 #endif 819 #ifdef INET6 820 case AF_INET6: 821 if (addr->sa_len != sizeof(struct sockaddr_in6)) { 822 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 823 return (EINVAL); 824 } 825 break; 826 #endif 827 default: 828 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 829 return (EINVAL); 830 } 831 832 vrf_id = inp->def_vrf_id; 833 SCTP_ASOC_CREATE_LOCK(inp); 834 SCTP_INP_RLOCK(inp); 835 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 836 SCTP_PCB_FLAGS_UNBOUND) { 837 /* Bind a ephemeral port */ 838 SCTP_INP_RUNLOCK(inp); 839 error = sctp6_bind(so, NULL, p); 840 if (error) { 841 SCTP_ASOC_CREATE_UNLOCK(inp); 842 843 return (error); 844 } 845 SCTP_INP_RLOCK(inp); 846 } 847 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && 848 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) { 849 /* We are already connected AND the TCP model */ 850 SCTP_INP_RUNLOCK(inp); 851 SCTP_ASOC_CREATE_UNLOCK(inp); 852 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EADDRINUSE); 853 return (EADDRINUSE); 854 } 855 #ifdef INET 856 sin6 = (struct sockaddr_in6 *)addr; 857 if (SCTP_IPV6_V6ONLY(inp6)) { 858 /* 859 * if IPV6_V6ONLY flag, ignore connections destined to a v4 860 * addr or v4-mapped addr 861 */ 862 if (addr->sa_family == AF_INET) { 863 SCTP_INP_RUNLOCK(inp); 864 SCTP_ASOC_CREATE_UNLOCK(inp); 865 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 866 return (EINVAL); 867 } 868 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 869 SCTP_INP_RUNLOCK(inp); 870 SCTP_ASOC_CREATE_UNLOCK(inp); 871 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 872 return (EINVAL); 873 } 874 } 875 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 876 /* convert v4-mapped into v4 addr */ 877 in6_sin6_2_sin(&store.sin, sin6); 878 addr = &store.sa; 879 } 880 #endif /* INET */ 881 /* Now do we connect? */ 882 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 883 stcb = LIST_FIRST(&inp->sctp_asoc_list); 884 if (stcb) { 885 SCTP_TCB_LOCK(stcb); 886 } 887 SCTP_INP_RUNLOCK(inp); 888 } else { 889 SCTP_INP_RUNLOCK(inp); 890 SCTP_INP_WLOCK(inp); 891 SCTP_INP_INCR_REF(inp); 892 SCTP_INP_WUNLOCK(inp); 893 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL); 894 if (stcb == NULL) { 895 SCTP_INP_WLOCK(inp); 896 SCTP_INP_DECR_REF(inp); 897 SCTP_INP_WUNLOCK(inp); 898 } 899 } 900 901 if (stcb != NULL) { 902 /* Already have or am bring up an association */ 903 SCTP_ASOC_CREATE_UNLOCK(inp); 904 SCTP_TCB_UNLOCK(stcb); 905 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EALREADY); 906 return (EALREADY); 907 } 908 /* We are GOOD to go */ 909 stcb = sctp_aloc_assoc(inp, addr, &error, 0, vrf_id, 910 inp->sctp_ep.pre_open_stream_count, 911 inp->sctp_ep.port, p); 912 SCTP_ASOC_CREATE_UNLOCK(inp); 913 if (stcb == NULL) { 914 /* Gak! no memory */ 915 return (error); 916 } 917 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { 918 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; 919 /* Set the connected flag so we can queue data */ 920 soisconnecting(so); 921 } 922 SCTP_SET_STATE(stcb, SCTP_STATE_COOKIE_WAIT); 923 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); 924 925 /* initialize authentication parameters for the assoc */ 926 sctp_initialize_auth_params(inp, stcb); 927 928 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED); 929 SCTP_TCB_UNLOCK(stcb); 930 return (error); 931 } 932 933 static int 934 sctp6_getaddr(struct socket *so, struct sockaddr **addr) 935 { 936 struct sockaddr_in6 *sin6; 937 struct sctp_inpcb *inp; 938 uint32_t vrf_id; 939 struct sctp_ifa *sctp_ifa; 940 941 int error; 942 943 /* 944 * Do the malloc first in case it blocks. 945 */ 946 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof(*sin6)); 947 if (sin6 == NULL) 948 return (ENOMEM); 949 sin6->sin6_family = AF_INET6; 950 sin6->sin6_len = sizeof(*sin6); 951 952 inp = (struct sctp_inpcb *)so->so_pcb; 953 if (inp == NULL) { 954 SCTP_FREE_SONAME(sin6); 955 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 956 return (ECONNRESET); 957 } 958 SCTP_INP_RLOCK(inp); 959 sin6->sin6_port = inp->sctp_lport; 960 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 961 /* For the bound all case you get back 0 */ 962 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 963 struct sctp_tcb *stcb; 964 struct sockaddr_in6 *sin_a6; 965 struct sctp_nets *net; 966 int fnd; 967 968 stcb = LIST_FIRST(&inp->sctp_asoc_list); 969 if (stcb == NULL) { 970 SCTP_INP_RUNLOCK(inp); 971 SCTP_FREE_SONAME(sin6); 972 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 973 return (ENOENT); 974 } 975 fnd = 0; 976 sin_a6 = NULL; 977 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 978 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr; 979 if (sin_a6 == NULL) 980 /* this will make coverity happy */ 981 continue; 982 983 if (sin_a6->sin6_family == AF_INET6) { 984 fnd = 1; 985 break; 986 } 987 } 988 if ((!fnd) || (sin_a6 == NULL)) { 989 /* punt */ 990 SCTP_INP_RUNLOCK(inp); 991 SCTP_FREE_SONAME(sin6); 992 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 993 return (ENOENT); 994 } 995 vrf_id = inp->def_vrf_id; 996 sctp_ifa = sctp_source_address_selection(inp, stcb, (sctp_route_t *)&net->ro, net, 0, vrf_id); 997 if (sctp_ifa) { 998 sin6->sin6_addr = sctp_ifa->address.sin6.sin6_addr; 999 } 1000 } else { 1001 /* For the bound all case you get back 0 */ 1002 memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr)); 1003 } 1004 } else { 1005 /* Take the first IPv6 address in the list */ 1006 struct sctp_laddr *laddr; 1007 int fnd = 0; 1008 1009 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { 1010 if (laddr->ifa->address.sa.sa_family == AF_INET6) { 1011 struct sockaddr_in6 *sin_a; 1012 1013 sin_a = &laddr->ifa->address.sin6; 1014 sin6->sin6_addr = sin_a->sin6_addr; 1015 fnd = 1; 1016 break; 1017 } 1018 } 1019 if (!fnd) { 1020 SCTP_FREE_SONAME(sin6); 1021 SCTP_INP_RUNLOCK(inp); 1022 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 1023 return (ENOENT); 1024 } 1025 } 1026 SCTP_INP_RUNLOCK(inp); 1027 /* Scoping things for v6 */ 1028 if ((error = sa6_recoverscope(sin6)) != 0) { 1029 SCTP_FREE_SONAME(sin6); 1030 return (error); 1031 } 1032 (*addr) = (struct sockaddr *)sin6; 1033 return (0); 1034 } 1035 1036 static int 1037 sctp6_peeraddr(struct socket *so, struct sockaddr **addr) 1038 { 1039 struct sockaddr_in6 *sin6; 1040 int fnd; 1041 struct sockaddr_in6 *sin_a6; 1042 struct sctp_inpcb *inp; 1043 struct sctp_tcb *stcb; 1044 struct sctp_nets *net; 1045 int error; 1046 1047 /* Do the malloc first in case it blocks. */ 1048 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 1049 if (sin6 == NULL) 1050 return (ENOMEM); 1051 sin6->sin6_family = AF_INET6; 1052 sin6->sin6_len = sizeof(*sin6); 1053 1054 inp = (struct sctp_inpcb *)so->so_pcb; 1055 if ((inp == NULL) || 1056 ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) { 1057 /* UDP type and listeners will drop out here */ 1058 SCTP_FREE_SONAME(sin6); 1059 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOTCONN); 1060 return (ENOTCONN); 1061 } 1062 SCTP_INP_RLOCK(inp); 1063 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1064 if (stcb) { 1065 SCTP_TCB_LOCK(stcb); 1066 } 1067 SCTP_INP_RUNLOCK(inp); 1068 if (stcb == NULL) { 1069 SCTP_FREE_SONAME(sin6); 1070 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 1071 return (ECONNRESET); 1072 } 1073 fnd = 0; 1074 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1075 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr; 1076 if (sin_a6->sin6_family == AF_INET6) { 1077 fnd = 1; 1078 sin6->sin6_port = stcb->rport; 1079 sin6->sin6_addr = sin_a6->sin6_addr; 1080 break; 1081 } 1082 } 1083 SCTP_TCB_UNLOCK(stcb); 1084 if (!fnd) { 1085 /* No IPv4 address */ 1086 SCTP_FREE_SONAME(sin6); 1087 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 1088 return (ENOENT); 1089 } 1090 if ((error = sa6_recoverscope(sin6)) != 0) { 1091 SCTP_FREE_SONAME(sin6); 1092 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, error); 1093 return (error); 1094 } 1095 *addr = (struct sockaddr *)sin6; 1096 return (0); 1097 } 1098 1099 static int 1100 sctp6_in6getaddr(struct socket *so, struct sockaddr **nam) 1101 { 1102 struct in6pcb *inp6 = sotoin6pcb(so); 1103 int error; 1104 1105 if (inp6 == NULL) { 1106 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1107 return (EINVAL); 1108 } 1109 1110 /* allow v6 addresses precedence */ 1111 error = sctp6_getaddr(so, nam); 1112 #ifdef INET 1113 if (error) { 1114 struct sockaddr_in6 *sin6; 1115 1116 /* try v4 next if v6 failed */ 1117 error = sctp_ingetaddr(so, nam); 1118 if (error) { 1119 return (error); 1120 } 1121 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 1122 if (sin6 == NULL) { 1123 SCTP_FREE_SONAME(*nam); 1124 return (ENOMEM); 1125 } 1126 in6_sin_2_v4mapsin6((struct sockaddr_in *)*nam, sin6); 1127 SCTP_FREE_SONAME(*nam); 1128 *nam = (struct sockaddr *)sin6; 1129 } 1130 #endif 1131 return (error); 1132 } 1133 1134 1135 static int 1136 sctp6_getpeeraddr(struct socket *so, struct sockaddr **nam) 1137 { 1138 struct in6pcb *inp6 = sotoin6pcb(so); 1139 int error; 1140 1141 if (inp6 == NULL) { 1142 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1143 return (EINVAL); 1144 } 1145 1146 /* allow v6 addresses precedence */ 1147 error = sctp6_peeraddr(so, nam); 1148 #ifdef INET 1149 if (error) { 1150 struct sockaddr_in6 *sin6; 1151 1152 /* try v4 next if v6 failed */ 1153 error = sctp_peeraddr(so, nam); 1154 if (error) { 1155 return (error); 1156 } 1157 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 1158 if (sin6 == NULL) { 1159 SCTP_FREE_SONAME(*nam); 1160 return (ENOMEM); 1161 } 1162 in6_sin_2_v4mapsin6((struct sockaddr_in *)*nam, sin6); 1163 SCTP_FREE_SONAME(*nam); 1164 *nam = (struct sockaddr *)sin6; 1165 } 1166 #endif 1167 return (error); 1168 } 1169 1170 struct pr_usrreqs sctp6_usrreqs = { 1171 .pru_abort = sctp6_abort, 1172 .pru_accept = sctp_accept, 1173 .pru_attach = sctp6_attach, 1174 .pru_bind = sctp6_bind, 1175 .pru_connect = sctp6_connect, 1176 .pru_control = in6_control, 1177 .pru_close = sctp6_close, 1178 .pru_detach = sctp6_close, 1179 .pru_sopoll = sopoll_generic, 1180 .pru_flush = sctp_flush, 1181 .pru_disconnect = sctp6_disconnect, 1182 .pru_listen = sctp_listen, 1183 .pru_peeraddr = sctp6_getpeeraddr, 1184 .pru_send = sctp6_send, 1185 .pru_shutdown = sctp_shutdown, 1186 .pru_sockaddr = sctp6_in6getaddr, 1187 .pru_sosend = sctp_sosend, 1188 .pru_soreceive = sctp_soreceive 1189 }; 1190 1191 #endif 1192