1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. 5 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. 6 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions are met: 10 * 11 * a) Redistributions of source code must retain the above copyright notice, 12 * this list of conditions and the following disclaimer. 13 * 14 * b) Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in 16 * the documentation and/or other materials provided with the distribution. 17 * 18 * c) Neither the name of Cisco Systems, Inc. nor the names of its 19 * contributors may be used to endorse or promote products derived 20 * from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 24 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 32 * THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 #include <netinet/sctp_os.h> 39 #ifdef INET6 40 #include <sys/proc.h> 41 #include <netinet/sctp_pcb.h> 42 #include <netinet/sctp_header.h> 43 #include <netinet/sctp_var.h> 44 #include <netinet6/sctp6_var.h> 45 #include <netinet/sctp_sysctl.h> 46 #include <netinet/sctp_output.h> 47 #include <netinet/sctp_uio.h> 48 #include <netinet/sctp_asconf.h> 49 #include <netinet/sctputil.h> 50 #include <netinet/sctp_indata.h> 51 #include <netinet/sctp_timer.h> 52 #include <netinet/sctp_auth.h> 53 #include <netinet/sctp_input.h> 54 #include <netinet/sctp_output.h> 55 #include <netinet/sctp_bsd_addr.h> 56 #include <netinet/sctp_crc32.h> 57 #include <netinet/icmp6.h> 58 #include <netinet/udp.h> 59 60 int 61 sctp6_input_with_port(struct mbuf **i_pak, int *offp, uint16_t port) 62 { 63 struct mbuf *m; 64 int iphlen; 65 uint32_t vrf_id; 66 uint8_t ecn_bits; 67 struct sockaddr_in6 src, dst; 68 struct ip6_hdr *ip6; 69 struct sctphdr *sh; 70 struct sctp_chunkhdr *ch; 71 int length, offset; 72 uint8_t compute_crc; 73 uint32_t mflowid; 74 uint8_t mflowtype; 75 uint16_t fibnum; 76 77 iphlen = *offp; 78 if (SCTP_GET_PKT_VRFID(*i_pak, vrf_id)) { 79 SCTP_RELEASE_PKT(*i_pak); 80 return (IPPROTO_DONE); 81 } 82 m = SCTP_HEADER_TO_CHAIN(*i_pak); 83 #ifdef SCTP_MBUF_LOGGING 84 /* Log in any input mbufs */ 85 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) { 86 sctp_log_mbc(m, SCTP_MBUF_INPUT); 87 } 88 #endif 89 #ifdef SCTP_PACKET_LOGGING 90 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LAST_PACKET_TRACING) { 91 sctp_packet_log(m); 92 } 93 #endif 94 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD, 95 "sctp6_input(): Packet of length %d received on %s with csum_flags 0x%b.\n", 96 m->m_pkthdr.len, 97 if_name(m->m_pkthdr.rcvif), 98 (int)m->m_pkthdr.csum_flags, CSUM_BITS); 99 mflowid = m->m_pkthdr.flowid; 100 mflowtype = M_HASHTYPE_GET(m); 101 fibnum = M_GETFIB(m); 102 SCTP_STAT_INCR(sctps_recvpackets); 103 SCTP_STAT_INCR_COUNTER64(sctps_inpackets); 104 /* Get IP, SCTP, and first chunk header together in the first mbuf. */ 105 offset = iphlen + sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr); 106 if (m->m_len < offset) { 107 m = m_pullup(m, offset); 108 if (m == NULL) { 109 SCTP_STAT_INCR(sctps_hdrops); 110 return (IPPROTO_DONE); 111 } 112 } 113 ip6 = mtod(m, struct ip6_hdr *); 114 sh = (struct sctphdr *)(mtod(m, caddr_t) + iphlen); 115 ch = (struct sctp_chunkhdr *)((caddr_t)sh + sizeof(struct sctphdr)); 116 offset -= sizeof(struct sctp_chunkhdr); 117 memset(&src, 0, sizeof(struct sockaddr_in6)); 118 src.sin6_family = AF_INET6; 119 src.sin6_len = sizeof(struct sockaddr_in6); 120 src.sin6_port = sh->src_port; 121 src.sin6_addr = ip6->ip6_src; 122 if (in6_setscope(&src.sin6_addr, m->m_pkthdr.rcvif, NULL) != 0) { 123 goto out; 124 } 125 memset(&dst, 0, sizeof(struct sockaddr_in6)); 126 dst.sin6_family = AF_INET6; 127 dst.sin6_len = sizeof(struct sockaddr_in6); 128 dst.sin6_port = sh->dest_port; 129 dst.sin6_addr = ip6->ip6_dst; 130 if (in6_setscope(&dst.sin6_addr, m->m_pkthdr.rcvif, NULL) != 0) { 131 goto out; 132 } 133 length = ntohs(ip6->ip6_plen) + iphlen; 134 /* Validate mbuf chain length with IP payload length. */ 135 if (SCTP_HEADER_LEN(m) != length) { 136 SCTPDBG(SCTP_DEBUG_INPUT1, 137 "sctp6_input() length:%d reported length:%d\n", length, SCTP_HEADER_LEN(m)); 138 SCTP_STAT_INCR(sctps_hdrops); 139 goto out; 140 } 141 if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) { 142 goto out; 143 } 144 ecn_bits = ((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 if (net->port) { 244 sctp_hc_set_mtu(&net->ro._l_addr, inp->fibnum, next_mtu + sizeof(struct udphdr)); 245 } else { 246 sctp_hc_set_mtu(&net->ro._l_addr, inp->fibnum, next_mtu); 247 } 248 } 249 /* Update the association MTU */ 250 if (stcb->asoc.smallest_mtu > next_mtu) { 251 sctp_pathmtu_adjustment(stcb, next_mtu); 252 } 253 /* Finally, start the PMTU timer if it was running before. */ 254 if (timer_stopped) { 255 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net); 256 } 257 SCTP_TCB_UNLOCK(stcb); 258 break; 259 default: 260 SCTP_TCB_UNLOCK(stcb); 261 break; 262 } 263 } 264 265 void 266 sctp6_ctlinput(int cmd, struct sockaddr *pktdst, void *d) 267 { 268 struct ip6ctlparam *ip6cp; 269 struct sctp_inpcb *inp; 270 struct sctp_tcb *stcb; 271 struct sctp_nets *net; 272 struct sctphdr sh; 273 struct sockaddr_in6 src, dst; 274 275 if (pktdst->sa_family != AF_INET6 || 276 pktdst->sa_len != sizeof(struct sockaddr_in6)) { 277 return; 278 } 279 280 if ((unsigned)cmd >= PRC_NCMDS) { 281 return; 282 } 283 if (PRC_IS_REDIRECT(cmd)) { 284 d = NULL; 285 } else if (inet6ctlerrmap[cmd] == 0) { 286 return; 287 } 288 /* If the parameter is from icmp6, decode it. */ 289 if (d != NULL) { 290 ip6cp = (struct ip6ctlparam *)d; 291 } else { 292 ip6cp = (struct ip6ctlparam *)NULL; 293 } 294 295 if (ip6cp != NULL) { 296 /* 297 * XXX: We assume that when IPV6 is non NULL, M and OFF are 298 * valid. 299 */ 300 if (ip6cp->ip6c_m == NULL) { 301 return; 302 } 303 304 /* 305 * Check if we can safely examine the ports and the 306 * verification tag of the SCTP common header. 307 */ 308 if (ip6cp->ip6c_m->m_pkthdr.len < 309 (int32_t)(ip6cp->ip6c_off + offsetof(struct sctphdr, checksum))) { 310 return; 311 } 312 313 /* Copy out the port numbers and the verification tag. */ 314 memset(&sh, 0, sizeof(sh)); 315 m_copydata(ip6cp->ip6c_m, 316 ip6cp->ip6c_off, 317 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t), 318 (caddr_t)&sh); 319 memset(&src, 0, sizeof(struct sockaddr_in6)); 320 src.sin6_family = AF_INET6; 321 src.sin6_len = sizeof(struct sockaddr_in6); 322 src.sin6_port = sh.src_port; 323 src.sin6_addr = ip6cp->ip6c_ip6->ip6_src; 324 if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) { 325 return; 326 } 327 memset(&dst, 0, sizeof(struct sockaddr_in6)); 328 dst.sin6_family = AF_INET6; 329 dst.sin6_len = sizeof(struct sockaddr_in6); 330 dst.sin6_port = sh.dest_port; 331 dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst; 332 if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) { 333 return; 334 } 335 inp = NULL; 336 net = NULL; 337 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst, 338 (struct sockaddr *)&src, 339 &inp, &net, 1, SCTP_DEFAULT_VRFID); 340 if ((stcb != NULL) && 341 (net != NULL) && 342 (inp != NULL)) { 343 /* Check the verification tag */ 344 if (ntohl(sh.v_tag) != 0) { 345 /* 346 * This must be the verification tag used 347 * for sending out packets. We don't 348 * consider packets reflecting the 349 * verification tag. 350 */ 351 if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) { 352 SCTP_TCB_UNLOCK(stcb); 353 return; 354 } 355 } else { 356 if (ip6cp->ip6c_m->m_pkthdr.len >= 357 ip6cp->ip6c_off + sizeof(struct sctphdr) + 358 sizeof(struct sctp_chunkhdr) + 359 offsetof(struct sctp_init, a_rwnd)) { 360 /* 361 * In this case we can check if we 362 * got an INIT chunk and if the 363 * initiate tag matches. 364 */ 365 uint32_t initiate_tag; 366 uint8_t chunk_type; 367 368 m_copydata(ip6cp->ip6c_m, 369 ip6cp->ip6c_off + 370 sizeof(struct sctphdr), 371 sizeof(uint8_t), 372 (caddr_t)&chunk_type); 373 m_copydata(ip6cp->ip6c_m, 374 ip6cp->ip6c_off + 375 sizeof(struct sctphdr) + 376 sizeof(struct sctp_chunkhdr), 377 sizeof(uint32_t), 378 (caddr_t)&initiate_tag); 379 if ((chunk_type != SCTP_INITIATION) || 380 (ntohl(initiate_tag) != stcb->asoc.my_vtag)) { 381 SCTP_TCB_UNLOCK(stcb); 382 return; 383 } 384 } else { 385 SCTP_TCB_UNLOCK(stcb); 386 return; 387 } 388 } 389 sctp6_notify(inp, stcb, net, 390 ip6cp->ip6c_icmp6->icmp6_type, 391 ip6cp->ip6c_icmp6->icmp6_code, 392 ntohl(ip6cp->ip6c_icmp6->icmp6_mtu)); 393 } else { 394 if ((stcb == NULL) && (inp != NULL)) { 395 /* reduce inp's ref-count */ 396 SCTP_INP_WLOCK(inp); 397 SCTP_INP_DECR_REF(inp); 398 SCTP_INP_WUNLOCK(inp); 399 } 400 if (stcb) { 401 SCTP_TCB_UNLOCK(stcb); 402 } 403 } 404 } 405 } 406 407 /* 408 * this routine can probably be collasped into the one in sctp_userreq.c 409 * since they do the same thing and now we lookup with a sockaddr 410 */ 411 static int 412 sctp6_getcred(SYSCTL_HANDLER_ARGS) 413 { 414 struct xucred xuc; 415 struct sockaddr_in6 addrs[2]; 416 struct sctp_inpcb *inp; 417 struct sctp_nets *net; 418 struct sctp_tcb *stcb; 419 int error; 420 uint32_t vrf_id; 421 422 vrf_id = SCTP_DEFAULT_VRFID; 423 424 error = priv_check(req->td, PRIV_NETINET_GETCRED); 425 if (error) 426 return (error); 427 428 if (req->newlen != sizeof(addrs)) { 429 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 430 return (EINVAL); 431 } 432 if (req->oldlen != sizeof(struct ucred)) { 433 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 434 return (EINVAL); 435 } 436 error = SYSCTL_IN(req, addrs, sizeof(addrs)); 437 if (error) 438 return (error); 439 440 stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[1]), 441 sin6tosa(&addrs[0]), 442 &inp, &net, 1, vrf_id); 443 if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) { 444 if ((inp != NULL) && (stcb == NULL)) { 445 /* reduce ref-count */ 446 SCTP_INP_WLOCK(inp); 447 SCTP_INP_DECR_REF(inp); 448 goto cred_can_cont; 449 } 450 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 451 error = ENOENT; 452 goto out; 453 } 454 SCTP_TCB_UNLOCK(stcb); 455 /* 456 * We use the write lock here, only since in the error leg we need 457 * it. If we used RLOCK, then we would have to 458 * wlock/decr/unlock/rlock. Which in theory could create a hole. 459 * Better to use higher wlock. 460 */ 461 SCTP_INP_WLOCK(inp); 462 cred_can_cont: 463 error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket); 464 if (error) { 465 SCTP_INP_WUNLOCK(inp); 466 goto out; 467 } 468 cru2x(inp->sctp_socket->so_cred, &xuc); 469 SCTP_INP_WUNLOCK(inp); 470 error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred)); 471 out: 472 return (error); 473 } 474 475 SYSCTL_PROC(_net_inet6_sctp6, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW, 476 0, 0, 477 sctp6_getcred, "S,ucred", "Get the ucred of a SCTP6 connection"); 478 479 480 /* This is the same as the sctp_abort() could be made common */ 481 static void 482 sctp6_abort(struct socket *so) 483 { 484 struct sctp_inpcb *inp; 485 uint32_t flags; 486 487 inp = (struct sctp_inpcb *)so->so_pcb; 488 if (inp == NULL) { 489 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 490 return; 491 } 492 sctp_must_try_again: 493 flags = inp->sctp_flags; 494 #ifdef SCTP_LOG_CLOSING 495 sctp_log_closing(inp, NULL, 17); 496 #endif 497 if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) && 498 (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) { 499 #ifdef SCTP_LOG_CLOSING 500 sctp_log_closing(inp, NULL, 16); 501 #endif 502 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 503 SCTP_CALLED_AFTER_CMPSET_OFCLOSE); 504 SOCK_LOCK(so); 505 SCTP_SB_CLEAR(so->so_snd); 506 /* 507 * same for the rcv ones, they are only here for the 508 * accounting/select. 509 */ 510 SCTP_SB_CLEAR(so->so_rcv); 511 /* Now null out the reference, we are completely detached. */ 512 so->so_pcb = NULL; 513 SOCK_UNLOCK(so); 514 } else { 515 flags = inp->sctp_flags; 516 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) { 517 goto sctp_must_try_again; 518 } 519 } 520 return; 521 } 522 523 static int 524 sctp6_attach(struct socket *so, int proto SCTP_UNUSED, struct thread *p SCTP_UNUSED) 525 { 526 int error; 527 struct sctp_inpcb *inp; 528 uint32_t vrf_id = SCTP_DEFAULT_VRFID; 529 530 inp = (struct sctp_inpcb *)so->so_pcb; 531 if (inp != NULL) { 532 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 533 return (EINVAL); 534 } 535 536 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 537 error = SCTP_SORESERVE(so, SCTP_BASE_SYSCTL(sctp_sendspace), SCTP_BASE_SYSCTL(sctp_recvspace)); 538 if (error) 539 return (error); 540 } 541 error = sctp_inpcb_alloc(so, vrf_id); 542 if (error) 543 return (error); 544 inp = (struct sctp_inpcb *)so->so_pcb; 545 SCTP_INP_WLOCK(inp); 546 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUND_V6; /* I'm v6! */ 547 548 inp->ip_inp.inp.inp_vflag |= INP_IPV6; 549 inp->ip_inp.inp.in6p_hops = -1; /* use kernel default */ 550 inp->ip_inp.inp.in6p_cksum = -1; /* just to be sure */ 551 #ifdef INET 552 /* 553 * XXX: ugly!! IPv4 TTL initialization is necessary for an IPv6 554 * socket as well, because the socket may be bound to an IPv6 555 * wildcard address, which may match an IPv4-mapped IPv6 address. 556 */ 557 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl); 558 #endif 559 SCTP_INP_WUNLOCK(inp); 560 return (0); 561 } 562 563 static int 564 sctp6_bind(struct socket *so, struct sockaddr *addr, struct thread *p) 565 { 566 struct sctp_inpcb *inp; 567 int error; 568 u_char vflagsav; 569 570 inp = (struct sctp_inpcb *)so->so_pcb; 571 if (inp == NULL) { 572 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 573 return (EINVAL); 574 } 575 576 if (addr) { 577 switch (addr->sa_family) { 578 #ifdef INET 579 case AF_INET: 580 if (addr->sa_len != sizeof(struct sockaddr_in)) { 581 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 582 return (EINVAL); 583 } 584 break; 585 #endif 586 #ifdef INET6 587 case AF_INET6: 588 if (addr->sa_len != sizeof(struct sockaddr_in6)) { 589 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 590 return (EINVAL); 591 } 592 break; 593 #endif 594 default: 595 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 596 return (EINVAL); 597 } 598 } 599 vflagsav = inp->ip_inp.inp.inp_vflag; 600 inp->ip_inp.inp.inp_vflag &= ~INP_IPV4; 601 inp->ip_inp.inp.inp_vflag |= INP_IPV6; 602 if ((addr != NULL) && (SCTP_IPV6_V6ONLY(inp) == 0)) { 603 switch (addr->sa_family) { 604 #ifdef INET 605 case AF_INET: 606 /* binding v4 addr to v6 socket, so reset flags */ 607 inp->ip_inp.inp.inp_vflag |= INP_IPV4; 608 inp->ip_inp.inp.inp_vflag &= ~INP_IPV6; 609 break; 610 #endif 611 #ifdef INET6 612 case AF_INET6: 613 { 614 struct sockaddr_in6 *sin6_p; 615 616 sin6_p = (struct sockaddr_in6 *)addr; 617 618 if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr)) { 619 inp->ip_inp.inp.inp_vflag |= INP_IPV4; 620 } 621 #ifdef INET 622 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { 623 struct sockaddr_in sin; 624 625 in6_sin6_2_sin(&sin, sin6_p); 626 inp->ip_inp.inp.inp_vflag |= INP_IPV4; 627 inp->ip_inp.inp.inp_vflag &= ~INP_IPV6; 628 error = sctp_inpcb_bind(so, (struct sockaddr *)&sin, NULL, p); 629 goto out; 630 } 631 #endif 632 break; 633 } 634 #endif 635 default: 636 break; 637 } 638 } else if (addr != NULL) { 639 struct sockaddr_in6 *sin6_p; 640 641 /* IPV6_V6ONLY socket */ 642 #ifdef INET 643 if (addr->sa_family == AF_INET) { 644 /* can't bind v4 addr to v6 only socket! */ 645 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 646 error = EINVAL; 647 goto out; 648 } 649 #endif 650 sin6_p = (struct sockaddr_in6 *)addr; 651 652 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { 653 /* can't bind v4-mapped addrs either! */ 654 /* NOTE: we don't support SIIT */ 655 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 656 error = EINVAL; 657 goto out; 658 } 659 } 660 error = sctp_inpcb_bind(so, addr, NULL, p); 661 out: 662 if (error != 0) 663 inp->ip_inp.inp.inp_vflag = vflagsav; 664 return (error); 665 } 666 667 668 static void 669 sctp6_close(struct socket *so) 670 { 671 sctp_close(so); 672 } 673 674 /* This could be made common with sctp_detach() since they are identical */ 675 676 static 677 int 678 sctp6_disconnect(struct socket *so) 679 { 680 return (sctp_disconnect(so)); 681 } 682 683 684 int 685 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, 686 struct mbuf *control, struct thread *p); 687 688 689 static int 690 sctp6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, 691 struct mbuf *control, struct thread *p) 692 { 693 struct sctp_inpcb *inp; 694 695 #ifdef INET 696 struct sockaddr_in6 *sin6; 697 #endif /* INET */ 698 /* No SPL needed since sctp_output does this */ 699 700 inp = (struct sctp_inpcb *)so->so_pcb; 701 if (inp == NULL) { 702 if (control) { 703 SCTP_RELEASE_PKT(control); 704 control = NULL; 705 } 706 SCTP_RELEASE_PKT(m); 707 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 708 return (EINVAL); 709 } 710 /* 711 * For the TCP model we may get a NULL addr, if we are a connected 712 * socket thats ok. 713 */ 714 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) && 715 (addr == NULL)) { 716 goto connected_type; 717 } 718 if (addr == NULL) { 719 SCTP_RELEASE_PKT(m); 720 if (control) { 721 SCTP_RELEASE_PKT(control); 722 control = NULL; 723 } 724 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EDESTADDRREQ); 725 return (EDESTADDRREQ); 726 } 727 #ifdef INET 728 sin6 = (struct sockaddr_in6 *)addr; 729 if (SCTP_IPV6_V6ONLY(inp)) { 730 /* 731 * if IPV6_V6ONLY flag, we discard datagrams destined to a 732 * v4 addr or v4-mapped addr 733 */ 734 if (addr->sa_family == AF_INET) { 735 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 736 return (EINVAL); 737 } 738 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 739 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 740 return (EINVAL); 741 } 742 } 743 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 744 struct sockaddr_in sin; 745 746 /* convert v4-mapped into v4 addr and send */ 747 in6_sin6_2_sin(&sin, sin6); 748 return (sctp_sendm(so, flags, m, (struct sockaddr *)&sin, control, p)); 749 } 750 #endif /* INET */ 751 connected_type: 752 /* now what about control */ 753 if (control) { 754 if (inp->control) { 755 SCTP_PRINTF("huh? control set?\n"); 756 SCTP_RELEASE_PKT(inp->control); 757 inp->control = NULL; 758 } 759 inp->control = control; 760 } 761 /* Place the data */ 762 if (inp->pkt) { 763 SCTP_BUF_NEXT(inp->pkt_last) = m; 764 inp->pkt_last = m; 765 } else { 766 inp->pkt_last = inp->pkt = m; 767 } 768 if ( 769 /* FreeBSD and MacOSX uses a flag passed */ 770 ((flags & PRUS_MORETOCOME) == 0) 771 ) { 772 /* 773 * note with the current version this code will only be used 774 * by OpenBSD, NetBSD and FreeBSD have methods for 775 * re-defining sosend() to use sctp_sosend(). One can 776 * optionaly switch back to this code (by changing back the 777 * defininitions but this is not advisable. 778 */ 779 int ret; 780 781 ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags); 782 inp->pkt = NULL; 783 inp->control = NULL; 784 return (ret); 785 } else { 786 return (0); 787 } 788 } 789 790 static int 791 sctp6_connect(struct socket *so, struct sockaddr *addr, struct thread *p) 792 { 793 uint32_t vrf_id; 794 int error = 0; 795 struct sctp_inpcb *inp; 796 struct sctp_tcb *stcb; 797 #ifdef INET 798 struct sockaddr_in6 *sin6; 799 union sctp_sockstore store; 800 #endif 801 802 inp = (struct sctp_inpcb *)so->so_pcb; 803 if (inp == NULL) { 804 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 805 return (ECONNRESET); /* I made the same as TCP since we are 806 * not setup? */ 807 } 808 if (addr == NULL) { 809 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 810 return (EINVAL); 811 } 812 switch (addr->sa_family) { 813 #ifdef INET 814 case AF_INET: 815 if (addr->sa_len != sizeof(struct sockaddr_in)) { 816 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 817 return (EINVAL); 818 } 819 break; 820 #endif 821 #ifdef INET6 822 case AF_INET6: 823 if (addr->sa_len != sizeof(struct sockaddr_in6)) { 824 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 825 return (EINVAL); 826 } 827 break; 828 #endif 829 default: 830 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 831 return (EINVAL); 832 } 833 834 vrf_id = inp->def_vrf_id; 835 SCTP_ASOC_CREATE_LOCK(inp); 836 SCTP_INP_RLOCK(inp); 837 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 838 SCTP_PCB_FLAGS_UNBOUND) { 839 /* Bind a ephemeral port */ 840 SCTP_INP_RUNLOCK(inp); 841 error = sctp6_bind(so, NULL, p); 842 if (error) { 843 SCTP_ASOC_CREATE_UNLOCK(inp); 844 845 return (error); 846 } 847 SCTP_INP_RLOCK(inp); 848 } 849 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && 850 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) { 851 /* We are already connected AND the TCP model */ 852 SCTP_INP_RUNLOCK(inp); 853 SCTP_ASOC_CREATE_UNLOCK(inp); 854 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EADDRINUSE); 855 return (EADDRINUSE); 856 } 857 #ifdef INET 858 sin6 = (struct sockaddr_in6 *)addr; 859 if (SCTP_IPV6_V6ONLY(inp)) { 860 /* 861 * if IPV6_V6ONLY flag, ignore connections destined to a v4 862 * addr or v4-mapped addr 863 */ 864 if (addr->sa_family == AF_INET) { 865 SCTP_INP_RUNLOCK(inp); 866 SCTP_ASOC_CREATE_UNLOCK(inp); 867 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 868 return (EINVAL); 869 } 870 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 871 SCTP_INP_RUNLOCK(inp); 872 SCTP_ASOC_CREATE_UNLOCK(inp); 873 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 874 return (EINVAL); 875 } 876 } 877 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 878 /* convert v4-mapped into v4 addr */ 879 in6_sin6_2_sin(&store.sin, sin6); 880 addr = &store.sa; 881 } 882 #endif /* INET */ 883 /* Now do we connect? */ 884 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 885 stcb = LIST_FIRST(&inp->sctp_asoc_list); 886 if (stcb) { 887 SCTP_TCB_LOCK(stcb); 888 } 889 SCTP_INP_RUNLOCK(inp); 890 } else { 891 SCTP_INP_RUNLOCK(inp); 892 SCTP_INP_WLOCK(inp); 893 SCTP_INP_INCR_REF(inp); 894 SCTP_INP_WUNLOCK(inp); 895 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL); 896 if (stcb == NULL) { 897 SCTP_INP_WLOCK(inp); 898 SCTP_INP_DECR_REF(inp); 899 SCTP_INP_WUNLOCK(inp); 900 } 901 } 902 903 if (stcb != NULL) { 904 /* Already have or am bring up an association */ 905 SCTP_ASOC_CREATE_UNLOCK(inp); 906 SCTP_TCB_UNLOCK(stcb); 907 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EALREADY); 908 return (EALREADY); 909 } 910 /* We are GOOD to go */ 911 stcb = sctp_aloc_assoc(inp, addr, &error, 0, vrf_id, 912 inp->sctp_ep.pre_open_stream_count, 913 inp->sctp_ep.port, p, 914 SCTP_INITIALIZE_AUTH_PARAMS); 915 SCTP_ASOC_CREATE_UNLOCK(inp); 916 if (stcb == NULL) { 917 /* Gak! no memory */ 918 return (error); 919 } 920 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { 921 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; 922 /* Set the connected flag so we can queue data */ 923 soisconnecting(so); 924 } 925 SCTP_SET_STATE(stcb, SCTP_STATE_COOKIE_WAIT); 926 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); 927 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED); 928 SCTP_TCB_UNLOCK(stcb); 929 return (error); 930 } 931 932 static int 933 sctp6_getaddr(struct socket *so, struct sockaddr **addr) 934 { 935 struct sockaddr_in6 *sin6; 936 struct sctp_inpcb *inp; 937 uint32_t vrf_id; 938 struct sctp_ifa *sctp_ifa; 939 940 int error; 941 942 /* 943 * Do the malloc first in case it blocks. 944 */ 945 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof(*sin6)); 946 if (sin6 == NULL) 947 return (ENOMEM); 948 sin6->sin6_family = AF_INET6; 949 sin6->sin6_len = sizeof(*sin6); 950 951 inp = (struct sctp_inpcb *)so->so_pcb; 952 if (inp == NULL) { 953 SCTP_FREE_SONAME(sin6); 954 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 955 return (ECONNRESET); 956 } 957 SCTP_INP_RLOCK(inp); 958 sin6->sin6_port = inp->sctp_lport; 959 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 960 /* For the bound all case you get back 0 */ 961 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 962 struct sctp_tcb *stcb; 963 struct sockaddr_in6 *sin_a6; 964 struct sctp_nets *net; 965 int fnd; 966 967 stcb = LIST_FIRST(&inp->sctp_asoc_list); 968 if (stcb == NULL) { 969 SCTP_INP_RUNLOCK(inp); 970 SCTP_FREE_SONAME(sin6); 971 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 972 return (ENOENT); 973 } 974 fnd = 0; 975 sin_a6 = NULL; 976 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 977 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr; 978 if (sin_a6 == NULL) 979 /* this will make coverity happy */ 980 continue; 981 982 if (sin_a6->sin6_family == AF_INET6) { 983 fnd = 1; 984 break; 985 } 986 } 987 if ((!fnd) || (sin_a6 == NULL)) { 988 /* punt */ 989 SCTP_INP_RUNLOCK(inp); 990 SCTP_FREE_SONAME(sin6); 991 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 992 return (ENOENT); 993 } 994 vrf_id = inp->def_vrf_id; 995 sctp_ifa = sctp_source_address_selection(inp, stcb, (sctp_route_t *)&net->ro, net, 0, vrf_id); 996 if (sctp_ifa) { 997 sin6->sin6_addr = sctp_ifa->address.sin6.sin6_addr; 998 } 999 } else { 1000 /* For the bound all case you get back 0 */ 1001 memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr)); 1002 } 1003 } else { 1004 /* Take the first IPv6 address in the list */ 1005 struct sctp_laddr *laddr; 1006 int fnd = 0; 1007 1008 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { 1009 if (laddr->ifa->address.sa.sa_family == AF_INET6) { 1010 struct sockaddr_in6 *sin_a; 1011 1012 sin_a = &laddr->ifa->address.sin6; 1013 sin6->sin6_addr = sin_a->sin6_addr; 1014 fnd = 1; 1015 break; 1016 } 1017 } 1018 if (!fnd) { 1019 SCTP_FREE_SONAME(sin6); 1020 SCTP_INP_RUNLOCK(inp); 1021 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 1022 return (ENOENT); 1023 } 1024 } 1025 SCTP_INP_RUNLOCK(inp); 1026 /* Scoping things for v6 */ 1027 if ((error = sa6_recoverscope(sin6)) != 0) { 1028 SCTP_FREE_SONAME(sin6); 1029 return (error); 1030 } 1031 (*addr) = (struct sockaddr *)sin6; 1032 return (0); 1033 } 1034 1035 static int 1036 sctp6_peeraddr(struct socket *so, struct sockaddr **addr) 1037 { 1038 struct sockaddr_in6 *sin6; 1039 int fnd; 1040 struct sockaddr_in6 *sin_a6; 1041 struct sctp_inpcb *inp; 1042 struct sctp_tcb *stcb; 1043 struct sctp_nets *net; 1044 int error; 1045 1046 /* Do the malloc first in case it blocks. */ 1047 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 1048 if (sin6 == NULL) 1049 return (ENOMEM); 1050 sin6->sin6_family = AF_INET6; 1051 sin6->sin6_len = sizeof(*sin6); 1052 1053 inp = (struct sctp_inpcb *)so->so_pcb; 1054 if ((inp == NULL) || 1055 ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) { 1056 /* UDP type and listeners will drop out here */ 1057 SCTP_FREE_SONAME(sin6); 1058 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOTCONN); 1059 return (ENOTCONN); 1060 } 1061 SCTP_INP_RLOCK(inp); 1062 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1063 if (stcb) { 1064 SCTP_TCB_LOCK(stcb); 1065 } 1066 SCTP_INP_RUNLOCK(inp); 1067 if (stcb == NULL) { 1068 SCTP_FREE_SONAME(sin6); 1069 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 1070 return (ECONNRESET); 1071 } 1072 fnd = 0; 1073 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1074 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr; 1075 if (sin_a6->sin6_family == AF_INET6) { 1076 fnd = 1; 1077 sin6->sin6_port = stcb->rport; 1078 sin6->sin6_addr = sin_a6->sin6_addr; 1079 break; 1080 } 1081 } 1082 SCTP_TCB_UNLOCK(stcb); 1083 if (!fnd) { 1084 /* No IPv4 address */ 1085 SCTP_FREE_SONAME(sin6); 1086 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 1087 return (ENOENT); 1088 } 1089 if ((error = sa6_recoverscope(sin6)) != 0) { 1090 SCTP_FREE_SONAME(sin6); 1091 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, error); 1092 return (error); 1093 } 1094 *addr = (struct sockaddr *)sin6; 1095 return (0); 1096 } 1097 1098 static int 1099 sctp6_in6getaddr(struct socket *so, struct sockaddr **nam) 1100 { 1101 struct inpcb *inp = sotoinpcb(so); 1102 int error; 1103 1104 if (inp == NULL) { 1105 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1106 return (EINVAL); 1107 } 1108 1109 /* allow v6 addresses precedence */ 1110 error = sctp6_getaddr(so, nam); 1111 #ifdef INET 1112 if (error) { 1113 struct sockaddr_in6 *sin6; 1114 1115 /* try v4 next if v6 failed */ 1116 error = sctp_ingetaddr(so, nam); 1117 if (error) { 1118 return (error); 1119 } 1120 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 1121 if (sin6 == NULL) { 1122 SCTP_FREE_SONAME(*nam); 1123 return (ENOMEM); 1124 } 1125 in6_sin_2_v4mapsin6((struct sockaddr_in *)*nam, sin6); 1126 SCTP_FREE_SONAME(*nam); 1127 *nam = (struct sockaddr *)sin6; 1128 } 1129 #endif 1130 return (error); 1131 } 1132 1133 1134 static int 1135 sctp6_getpeeraddr(struct socket *so, struct sockaddr **nam) 1136 { 1137 struct inpcb *inp = sotoinpcb(so); 1138 int error; 1139 1140 if (inp == NULL) { 1141 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1142 return (EINVAL); 1143 } 1144 1145 /* allow v6 addresses precedence */ 1146 error = sctp6_peeraddr(so, nam); 1147 #ifdef INET 1148 if (error) { 1149 struct sockaddr_in6 *sin6; 1150 1151 /* try v4 next if v6 failed */ 1152 error = sctp_peeraddr(so, nam); 1153 if (error) { 1154 return (error); 1155 } 1156 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 1157 if (sin6 == NULL) { 1158 SCTP_FREE_SONAME(*nam); 1159 return (ENOMEM); 1160 } 1161 in6_sin_2_v4mapsin6((struct sockaddr_in *)*nam, sin6); 1162 SCTP_FREE_SONAME(*nam); 1163 *nam = (struct sockaddr *)sin6; 1164 } 1165 #endif 1166 return (error); 1167 } 1168 1169 struct pr_usrreqs sctp6_usrreqs = { 1170 .pru_abort = sctp6_abort, 1171 .pru_accept = sctp_accept, 1172 .pru_attach = sctp6_attach, 1173 .pru_bind = sctp6_bind, 1174 .pru_connect = sctp6_connect, 1175 .pru_control = in6_control, 1176 .pru_close = sctp6_close, 1177 .pru_detach = sctp6_close, 1178 .pru_sopoll = sopoll_generic, 1179 .pru_flush = sctp_flush, 1180 .pru_disconnect = sctp6_disconnect, 1181 .pru_listen = sctp_listen, 1182 .pru_peeraddr = sctp6_getpeeraddr, 1183 .pru_send = sctp6_send, 1184 .pru_shutdown = sctp_shutdown, 1185 .pru_sockaddr = sctp6_in6getaddr, 1186 .pru_sosend = sctp_sosend, 1187 .pru_soreceive = sctp_soreceive 1188 }; 1189 1190 #endif 1191