1 /*- 2 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. 3 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. 4 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * 9 * a) Redistributions of source code must retain the above copyright notice, 10 * this list of conditions and the following disclaimer. 11 * 12 * b) Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in 14 * the documentation and/or other materials provided with the distribution. 15 * 16 * c) Neither the name of Cisco Systems, Inc. nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30 * THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #include <netinet/sctp_os.h> 37 #ifdef INET6 38 #include <sys/proc.h> 39 #include <netinet/sctp_pcb.h> 40 #include <netinet/sctp_header.h> 41 #include <netinet/sctp_var.h> 42 #include <netinet6/sctp6_var.h> 43 #include <netinet/sctp_sysctl.h> 44 #include <netinet/sctp_output.h> 45 #include <netinet/sctp_uio.h> 46 #include <netinet/sctp_asconf.h> 47 #include <netinet/sctputil.h> 48 #include <netinet/sctp_indata.h> 49 #include <netinet/sctp_timer.h> 50 #include <netinet/sctp_auth.h> 51 #include <netinet/sctp_input.h> 52 #include <netinet/sctp_output.h> 53 #include <netinet/sctp_bsd_addr.h> 54 #include <netinet/sctp_crc32.h> 55 #include <netinet/icmp6.h> 56 #include <netinet/udp.h> 57 58 extern struct protosw inetsw[]; 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 #if !defined(SCTP_WITH_NO_CSUM) 73 uint8_t compute_crc; 74 #endif 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 defined(SCTP_WITH_NO_CSUM) 146 SCTP_STAT_INCR(sctps_recvnocrc); 147 #else 148 if (m->m_pkthdr.csum_flags & CSUM_SCTP_VALID) { 149 SCTP_STAT_INCR(sctps_recvhwcrc); 150 compute_crc = 0; 151 } else { 152 SCTP_STAT_INCR(sctps_recvswcrc); 153 compute_crc = 1; 154 } 155 #endif 156 sctp_common_input_processing(&m, iphlen, offset, length, 157 (struct sockaddr *)&src, 158 (struct sockaddr *)&dst, 159 sh, ch, 160 #if !defined(SCTP_WITH_NO_CSUM) 161 compute_crc, 162 #endif 163 ecn_bits, 164 mflowtype, mflowid, fibnum, 165 vrf_id, port); 166 out: 167 if (m) { 168 sctp_m_freem(m); 169 } 170 return (IPPROTO_DONE); 171 } 172 173 174 int 175 sctp6_input(struct mbuf **i_pak, int *offp, int proto SCTP_UNUSED) 176 { 177 return (sctp6_input_with_port(i_pak, offp, 0)); 178 } 179 180 void 181 sctp6_notify(struct sctp_inpcb *inp, 182 struct sctp_tcb *stcb, 183 struct sctp_nets *net, 184 uint8_t icmp6_type, 185 uint8_t icmp6_code, 186 uint32_t next_mtu) 187 { 188 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 189 struct socket *so; 190 #endif 191 int timer_stopped; 192 193 switch (icmp6_type) { 194 case ICMP6_DST_UNREACH: 195 if ((icmp6_code == ICMP6_DST_UNREACH_NOROUTE) || 196 (icmp6_code == ICMP6_DST_UNREACH_ADMIN) || 197 (icmp6_code == ICMP6_DST_UNREACH_BEYONDSCOPE) || 198 (icmp6_code == ICMP6_DST_UNREACH_ADDR)) { 199 /* Mark the net unreachable. */ 200 if (net->dest_state & SCTP_ADDR_REACHABLE) { 201 /* Ok that destination is not reachable */ 202 net->dest_state &= ~SCTP_ADDR_REACHABLE; 203 net->dest_state &= ~SCTP_ADDR_PF; 204 sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN, 205 stcb, 0, (void *)net, SCTP_SO_NOT_LOCKED); 206 } 207 } 208 SCTP_TCB_UNLOCK(stcb); 209 break; 210 case ICMP6_PARAM_PROB: 211 /* Treat it like an ABORT. */ 212 if (icmp6_code == ICMP6_PARAMPROB_NEXTHEADER) { 213 sctp_abort_notification(stcb, 1, 0, NULL, SCTP_SO_NOT_LOCKED); 214 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 215 so = SCTP_INP_SO(inp); 216 atomic_add_int(&stcb->asoc.refcnt, 1); 217 SCTP_TCB_UNLOCK(stcb); 218 SCTP_SOCKET_LOCK(so, 1); 219 SCTP_TCB_LOCK(stcb); 220 atomic_subtract_int(&stcb->asoc.refcnt, 1); 221 #endif 222 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, 223 SCTP_FROM_SCTP_USRREQ + SCTP_LOC_2); 224 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 225 SCTP_SOCKET_UNLOCK(so, 1); 226 #endif 227 } else { 228 SCTP_TCB_UNLOCK(stcb); 229 } 230 break; 231 case ICMP6_PACKET_TOO_BIG: 232 if ((net->dest_state & SCTP_ADDR_NO_PMTUD) == 0) { 233 SCTP_TCB_UNLOCK(stcb); 234 break; 235 } 236 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) { 237 timer_stopped = 1; 238 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net, 239 SCTP_FROM_SCTP_USRREQ + SCTP_LOC_1); 240 } else { 241 timer_stopped = 0; 242 } 243 /* Update the path MTU. */ 244 if (net->port) { 245 next_mtu -= sizeof(struct udphdr); 246 } 247 if (net->mtu > next_mtu) { 248 net->mtu = next_mtu; 249 } 250 /* Update the association MTU */ 251 if (stcb->asoc.smallest_mtu > next_mtu) { 252 sctp_pathmtu_adjustment(stcb, next_mtu); 253 } 254 /* Finally, start the PMTU timer if it was running before. */ 255 if (timer_stopped) { 256 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net); 257 } 258 SCTP_TCB_UNLOCK(stcb); 259 break; 260 default: 261 SCTP_TCB_UNLOCK(stcb); 262 break; 263 } 264 } 265 266 void 267 sctp6_ctlinput(int cmd, struct sockaddr *pktdst, void *d) 268 { 269 struct ip6ctlparam *ip6cp; 270 struct sctp_inpcb *inp; 271 struct sctp_tcb *stcb; 272 struct sctp_nets *net; 273 struct sctphdr sh; 274 struct sockaddr_in6 src, dst; 275 276 if (pktdst->sa_family != AF_INET6 || 277 pktdst->sa_len != sizeof(struct sockaddr_in6)) { 278 return; 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 * Check if we can safely examine the ports and the 305 * verification tag of the SCTP common header. 306 */ 307 if (ip6cp->ip6c_m->m_pkthdr.len < 308 (int32_t)(ip6cp->ip6c_off + offsetof(struct sctphdr, checksum))) { 309 return; 310 } 311 /* Copy out the port numbers and the verification tag. */ 312 memset(&sh, 0, sizeof(sh)); 313 m_copydata(ip6cp->ip6c_m, 314 ip6cp->ip6c_off, 315 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t), 316 (caddr_t)&sh); 317 memset(&src, 0, sizeof(struct sockaddr_in6)); 318 src.sin6_family = AF_INET6; 319 src.sin6_len = sizeof(struct sockaddr_in6); 320 src.sin6_port = sh.src_port; 321 src.sin6_addr = ip6cp->ip6c_ip6->ip6_src; 322 if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) { 323 return; 324 } 325 memset(&dst, 0, sizeof(struct sockaddr_in6)); 326 dst.sin6_family = AF_INET6; 327 dst.sin6_len = sizeof(struct sockaddr_in6); 328 dst.sin6_port = sh.dest_port; 329 dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst; 330 if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) { 331 return; 332 } 333 inp = NULL; 334 net = NULL; 335 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst, 336 (struct sockaddr *)&src, 337 &inp, &net, 1, SCTP_DEFAULT_VRFID); 338 if ((stcb != NULL) && 339 (net != NULL) && 340 (inp != NULL)) { 341 /* Check the verification tag */ 342 if (ntohl(sh.v_tag) != 0) { 343 /* 344 * This must be the verification tag used 345 * for sending out packets. We don't 346 * consider packets reflecting the 347 * verification tag. 348 */ 349 if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) { 350 SCTP_TCB_UNLOCK(stcb); 351 return; 352 } 353 } else { 354 if (ip6cp->ip6c_m->m_pkthdr.len >= 355 ip6cp->ip6c_off + sizeof(struct sctphdr) + 356 sizeof(struct sctp_chunkhdr) + 357 offsetof(struct sctp_init, a_rwnd)) { 358 /* 359 * In this case we can check if we 360 * got an INIT chunk and if the 361 * initiate tag matches. 362 */ 363 uint32_t initiate_tag; 364 uint8_t chunk_type; 365 366 m_copydata(ip6cp->ip6c_m, 367 ip6cp->ip6c_off + 368 sizeof(struct sctphdr), 369 sizeof(uint8_t), 370 (caddr_t)&chunk_type); 371 m_copydata(ip6cp->ip6c_m, 372 ip6cp->ip6c_off + 373 sizeof(struct sctphdr) + 374 sizeof(struct sctp_chunkhdr), 375 sizeof(uint32_t), 376 (caddr_t)&initiate_tag); 377 if ((chunk_type != SCTP_INITIATION) || 378 (ntohl(initiate_tag) != stcb->asoc.my_vtag)) { 379 SCTP_TCB_UNLOCK(stcb); 380 return; 381 } 382 } else { 383 SCTP_TCB_UNLOCK(stcb); 384 return; 385 } 386 } 387 sctp6_notify(inp, stcb, net, 388 ip6cp->ip6c_icmp6->icmp6_type, 389 ip6cp->ip6c_icmp6->icmp6_code, 390 ntohl(ip6cp->ip6c_icmp6->icmp6_mtu)); 391 } else { 392 if ((stcb == NULL) && (inp != NULL)) { 393 /* reduce inp's ref-count */ 394 SCTP_INP_WLOCK(inp); 395 SCTP_INP_DECR_REF(inp); 396 SCTP_INP_WUNLOCK(inp); 397 } 398 if (stcb) { 399 SCTP_TCB_UNLOCK(stcb); 400 } 401 } 402 } 403 } 404 405 /* 406 * this routine can probably be collasped into the one in sctp_userreq.c 407 * since they do the same thing and now we lookup with a sockaddr 408 */ 409 static int 410 sctp6_getcred(SYSCTL_HANDLER_ARGS) 411 { 412 struct xucred xuc; 413 struct sockaddr_in6 addrs[2]; 414 struct sctp_inpcb *inp; 415 struct sctp_nets *net; 416 struct sctp_tcb *stcb; 417 int error; 418 uint32_t vrf_id; 419 420 vrf_id = SCTP_DEFAULT_VRFID; 421 422 error = priv_check(req->td, PRIV_NETINET_GETCRED); 423 if (error) 424 return (error); 425 426 if (req->newlen != sizeof(addrs)) { 427 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 428 return (EINVAL); 429 } 430 if (req->oldlen != sizeof(struct ucred)) { 431 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 432 return (EINVAL); 433 } 434 error = SYSCTL_IN(req, addrs, sizeof(addrs)); 435 if (error) 436 return (error); 437 438 stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[1]), 439 sin6tosa(&addrs[0]), 440 &inp, &net, 1, vrf_id); 441 if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) { 442 if ((inp != NULL) && (stcb == NULL)) { 443 /* reduce ref-count */ 444 SCTP_INP_WLOCK(inp); 445 SCTP_INP_DECR_REF(inp); 446 goto cred_can_cont; 447 } 448 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 449 error = ENOENT; 450 goto out; 451 } 452 SCTP_TCB_UNLOCK(stcb); 453 /* 454 * We use the write lock here, only since in the error leg we need 455 * it. If we used RLOCK, then we would have to 456 * wlock/decr/unlock/rlock. Which in theory could create a hole. 457 * Better to use higher wlock. 458 */ 459 SCTP_INP_WLOCK(inp); 460 cred_can_cont: 461 error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket); 462 if (error) { 463 SCTP_INP_WUNLOCK(inp); 464 goto out; 465 } 466 cru2x(inp->sctp_socket->so_cred, &xuc); 467 SCTP_INP_WUNLOCK(inp); 468 error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred)); 469 out: 470 return (error); 471 } 472 473 SYSCTL_PROC(_net_inet6_sctp6, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW, 474 0, 0, 475 sctp6_getcred, "S,ucred", "Get the ucred of a SCTP6 connection"); 476 477 478 /* This is the same as the sctp_abort() could be made common */ 479 static void 480 sctp6_abort(struct socket *so) 481 { 482 struct sctp_inpcb *inp; 483 uint32_t flags; 484 485 inp = (struct sctp_inpcb *)so->so_pcb; 486 if (inp == NULL) { 487 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 488 return; 489 } 490 sctp_must_try_again: 491 flags = inp->sctp_flags; 492 #ifdef SCTP_LOG_CLOSING 493 sctp_log_closing(inp, NULL, 17); 494 #endif 495 if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) && 496 (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) { 497 #ifdef SCTP_LOG_CLOSING 498 sctp_log_closing(inp, NULL, 16); 499 #endif 500 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 501 SCTP_CALLED_AFTER_CMPSET_OFCLOSE); 502 SOCK_LOCK(so); 503 SCTP_SB_CLEAR(so->so_snd); 504 /* 505 * same for the rcv ones, they are only here for the 506 * accounting/select. 507 */ 508 SCTP_SB_CLEAR(so->so_rcv); 509 /* Now null out the reference, we are completely detached. */ 510 so->so_pcb = NULL; 511 SOCK_UNLOCK(so); 512 } else { 513 flags = inp->sctp_flags; 514 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) { 515 goto sctp_must_try_again; 516 } 517 } 518 return; 519 } 520 521 static int 522 sctp6_attach(struct socket *so, int proto SCTP_UNUSED, struct thread *p SCTP_UNUSED) 523 { 524 struct in6pcb *inp6; 525 int error; 526 struct sctp_inpcb *inp; 527 uint32_t vrf_id = SCTP_DEFAULT_VRFID; 528 529 inp = (struct sctp_inpcb *)so->so_pcb; 530 if (inp != NULL) { 531 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 532 return (EINVAL); 533 } 534 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 535 error = SCTP_SORESERVE(so, SCTP_BASE_SYSCTL(sctp_sendspace), SCTP_BASE_SYSCTL(sctp_recvspace)); 536 if (error) 537 return (error); 538 } 539 error = sctp_inpcb_alloc(so, vrf_id); 540 if (error) 541 return (error); 542 inp = (struct sctp_inpcb *)so->so_pcb; 543 SCTP_INP_WLOCK(inp); 544 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUND_V6; /* I'm v6! */ 545 inp6 = (struct in6pcb *)inp; 546 547 inp6->inp_vflag |= INP_IPV6; 548 inp6->in6p_hops = -1; /* use kernel default */ 549 inp6->in6p_cksum = -1; /* just to be sure */ 550 #ifdef INET 551 /* 552 * XXX: ugly!! IPv4 TTL initialization is necessary for an IPv6 553 * socket as well, because the socket may be bound to an IPv6 554 * wildcard address, which may match an IPv4-mapped IPv6 address. 555 */ 556 inp6->inp_ip_ttl = MODULE_GLOBAL(ip_defttl); 557 #endif 558 SCTP_INP_WUNLOCK(inp); 559 return (0); 560 } 561 562 static int 563 sctp6_bind(struct socket *so, struct sockaddr *addr, struct thread *p) 564 { 565 struct sctp_inpcb *inp; 566 struct in6pcb *inp6; 567 int error; 568 569 inp = (struct sctp_inpcb *)so->so_pcb; 570 if (inp == NULL) { 571 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 572 return (EINVAL); 573 } 574 if (addr) { 575 switch (addr->sa_family) { 576 #ifdef INET 577 case AF_INET: 578 if (addr->sa_len != sizeof(struct sockaddr_in)) { 579 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 580 return (EINVAL); 581 } 582 break; 583 #endif 584 #ifdef INET6 585 case AF_INET6: 586 if (addr->sa_len != sizeof(struct sockaddr_in6)) { 587 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 588 return (EINVAL); 589 } 590 break; 591 #endif 592 default: 593 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 594 return (EINVAL); 595 } 596 } 597 inp6 = (struct in6pcb *)inp; 598 inp6->inp_vflag &= ~INP_IPV4; 599 inp6->inp_vflag |= INP_IPV6; 600 if ((addr != NULL) && (SCTP_IPV6_V6ONLY(inp6) == 0)) { 601 switch (addr->sa_family) { 602 #ifdef INET 603 case AF_INET: 604 /* binding v4 addr to v6 socket, so reset flags */ 605 inp6->inp_vflag |= INP_IPV4; 606 inp6->inp_vflag &= ~INP_IPV6; 607 break; 608 #endif 609 #ifdef INET6 610 case AF_INET6: 611 { 612 struct sockaddr_in6 *sin6_p; 613 614 sin6_p = (struct sockaddr_in6 *)addr; 615 616 if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr)) { 617 inp6->inp_vflag |= INP_IPV4; 618 } 619 #ifdef INET 620 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { 621 struct sockaddr_in sin; 622 623 in6_sin6_2_sin(&sin, sin6_p); 624 inp6->inp_vflag |= INP_IPV4; 625 inp6->inp_vflag &= ~INP_IPV6; 626 error = sctp_inpcb_bind(so, (struct sockaddr *)&sin, NULL, p); 627 return (error); 628 } 629 #endif 630 break; 631 } 632 #endif 633 default: 634 break; 635 } 636 } else if (addr != NULL) { 637 struct sockaddr_in6 *sin6_p; 638 639 /* IPV6_V6ONLY socket */ 640 #ifdef INET 641 if (addr->sa_family == AF_INET) { 642 /* can't bind v4 addr to v6 only socket! */ 643 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 644 return (EINVAL); 645 } 646 #endif 647 sin6_p = (struct sockaddr_in6 *)addr; 648 649 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { 650 /* can't bind v4-mapped addrs either! */ 651 /* NOTE: we don't support SIIT */ 652 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 653 return (EINVAL); 654 } 655 } 656 error = sctp_inpcb_bind(so, addr, NULL, p); 657 return (error); 658 } 659 660 661 static void 662 sctp6_close(struct socket *so) 663 { 664 sctp_close(so); 665 } 666 667 /* This could be made common with sctp_detach() since they are identical */ 668 669 static 670 int 671 sctp6_disconnect(struct socket *so) 672 { 673 return (sctp_disconnect(so)); 674 } 675 676 677 int 678 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, 679 struct mbuf *control, struct thread *p); 680 681 682 static int 683 sctp6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, 684 struct mbuf *control, struct thread *p) 685 { 686 struct sctp_inpcb *inp; 687 struct in6pcb *inp6; 688 689 #ifdef INET 690 struct sockaddr_in6 *sin6; 691 #endif /* INET */ 692 /* No SPL needed since sctp_output does this */ 693 694 inp = (struct sctp_inpcb *)so->so_pcb; 695 if (inp == NULL) { 696 if (control) { 697 SCTP_RELEASE_PKT(control); 698 control = NULL; 699 } 700 SCTP_RELEASE_PKT(m); 701 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 702 return (EINVAL); 703 } 704 inp6 = (struct in6pcb *)inp; 705 /* 706 * For the TCP model we may get a NULL addr, if we are a connected 707 * socket thats ok. 708 */ 709 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) && 710 (addr == NULL)) { 711 goto connected_type; 712 } 713 if (addr == NULL) { 714 SCTP_RELEASE_PKT(m); 715 if (control) { 716 SCTP_RELEASE_PKT(control); 717 control = NULL; 718 } 719 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EDESTADDRREQ); 720 return (EDESTADDRREQ); 721 } 722 #ifdef INET 723 sin6 = (struct sockaddr_in6 *)addr; 724 if (SCTP_IPV6_V6ONLY(inp6)) { 725 /* 726 * if IPV6_V6ONLY flag, we discard datagrams destined to a 727 * v4 addr or v4-mapped addr 728 */ 729 if (addr->sa_family == AF_INET) { 730 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 731 return (EINVAL); 732 } 733 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 734 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 735 return (EINVAL); 736 } 737 } 738 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 739 struct sockaddr_in sin; 740 741 /* convert v4-mapped into v4 addr and send */ 742 in6_sin6_2_sin(&sin, sin6); 743 return (sctp_sendm(so, flags, m, (struct sockaddr *)&sin, control, p)); 744 } 745 #endif /* INET */ 746 connected_type: 747 /* now what about control */ 748 if (control) { 749 if (inp->control) { 750 SCTP_PRINTF("huh? control set?\n"); 751 SCTP_RELEASE_PKT(inp->control); 752 inp->control = NULL; 753 } 754 inp->control = control; 755 } 756 /* Place the data */ 757 if (inp->pkt) { 758 SCTP_BUF_NEXT(inp->pkt_last) = m; 759 inp->pkt_last = m; 760 } else { 761 inp->pkt_last = inp->pkt = m; 762 } 763 if ( 764 /* FreeBSD and MacOSX uses a flag passed */ 765 ((flags & PRUS_MORETOCOME) == 0) 766 ) { 767 /* 768 * note with the current version this code will only be used 769 * by OpenBSD, NetBSD and FreeBSD have methods for 770 * re-defining sosend() to use sctp_sosend(). One can 771 * optionaly switch back to this code (by changing back the 772 * defininitions but this is not advisable. 773 */ 774 int ret; 775 776 ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags); 777 inp->pkt = NULL; 778 inp->control = NULL; 779 return (ret); 780 } else { 781 return (0); 782 } 783 } 784 785 static int 786 sctp6_connect(struct socket *so, struct sockaddr *addr, struct thread *p) 787 { 788 uint32_t vrf_id; 789 int error = 0; 790 struct sctp_inpcb *inp; 791 struct sctp_tcb *stcb; 792 #ifdef INET 793 struct in6pcb *inp6; 794 struct sockaddr_in6 *sin6; 795 union sctp_sockstore store; 796 #endif 797 798 #ifdef INET 799 inp6 = (struct in6pcb *)so->so_pcb; 800 #endif 801 inp = (struct sctp_inpcb *)so->so_pcb; 802 if (inp == NULL) { 803 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 804 return (ECONNRESET); /* I made the same as TCP since we are 805 * not setup? */ 806 } 807 if (addr == NULL) { 808 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 809 return (EINVAL); 810 } 811 switch (addr->sa_family) { 812 #ifdef INET 813 case AF_INET: 814 if (addr->sa_len != sizeof(struct sockaddr_in)) { 815 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 816 return (EINVAL); 817 } 818 break; 819 #endif 820 #ifdef INET6 821 case AF_INET6: 822 if (addr->sa_len != sizeof(struct sockaddr_in6)) { 823 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 824 return (EINVAL); 825 } 826 break; 827 #endif 828 default: 829 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 830 return (EINVAL); 831 } 832 833 vrf_id = inp->def_vrf_id; 834 SCTP_ASOC_CREATE_LOCK(inp); 835 SCTP_INP_RLOCK(inp); 836 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 837 SCTP_PCB_FLAGS_UNBOUND) { 838 /* Bind a ephemeral port */ 839 SCTP_INP_RUNLOCK(inp); 840 error = sctp6_bind(so, NULL, p); 841 if (error) { 842 SCTP_ASOC_CREATE_UNLOCK(inp); 843 844 return (error); 845 } 846 SCTP_INP_RLOCK(inp); 847 } 848 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && 849 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) { 850 /* We are already connected AND the TCP model */ 851 SCTP_INP_RUNLOCK(inp); 852 SCTP_ASOC_CREATE_UNLOCK(inp); 853 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EADDRINUSE); 854 return (EADDRINUSE); 855 } 856 #ifdef INET 857 sin6 = (struct sockaddr_in6 *)addr; 858 if (SCTP_IPV6_V6ONLY(inp6)) { 859 /* 860 * if IPV6_V6ONLY flag, ignore connections destined to a v4 861 * addr or v4-mapped addr 862 */ 863 if (addr->sa_family == AF_INET) { 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 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 870 SCTP_INP_RUNLOCK(inp); 871 SCTP_ASOC_CREATE_UNLOCK(inp); 872 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 873 return (EINVAL); 874 } 875 } 876 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 877 /* convert v4-mapped into v4 addr */ 878 in6_sin6_2_sin(&store.sin, sin6); 879 addr = &store.sa; 880 } 881 #endif /* INET */ 882 /* Now do we connect? */ 883 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 884 stcb = LIST_FIRST(&inp->sctp_asoc_list); 885 if (stcb) { 886 SCTP_TCB_LOCK(stcb); 887 } 888 SCTP_INP_RUNLOCK(inp); 889 } else { 890 SCTP_INP_RUNLOCK(inp); 891 SCTP_INP_WLOCK(inp); 892 SCTP_INP_INCR_REF(inp); 893 SCTP_INP_WUNLOCK(inp); 894 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL); 895 if (stcb == NULL) { 896 SCTP_INP_WLOCK(inp); 897 SCTP_INP_DECR_REF(inp); 898 SCTP_INP_WUNLOCK(inp); 899 } 900 } 901 902 if (stcb != NULL) { 903 /* Already have or am bring up an association */ 904 SCTP_ASOC_CREATE_UNLOCK(inp); 905 SCTP_TCB_UNLOCK(stcb); 906 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EALREADY); 907 return (EALREADY); 908 } 909 /* We are GOOD to go */ 910 stcb = sctp_aloc_assoc(inp, addr, &error, 0, vrf_id, 911 inp->sctp_ep.pre_open_stream_count, 912 inp->sctp_ep.port, p); 913 SCTP_ASOC_CREATE_UNLOCK(inp); 914 if (stcb == NULL) { 915 /* Gak! no memory */ 916 return (error); 917 } 918 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { 919 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; 920 /* Set the connected flag so we can queue data */ 921 soisconnecting(so); 922 } 923 stcb->asoc.state = SCTP_STATE_COOKIE_WAIT; 924 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); 925 926 /* initialize authentication parameters for the assoc */ 927 sctp_initialize_auth_params(inp, stcb); 928 929 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED); 930 SCTP_TCB_UNLOCK(stcb); 931 return (error); 932 } 933 934 static int 935 sctp6_getaddr(struct socket *so, struct sockaddr **addr) 936 { 937 struct sockaddr_in6 *sin6; 938 struct sctp_inpcb *inp; 939 uint32_t vrf_id; 940 struct sctp_ifa *sctp_ifa; 941 942 int error; 943 944 /* 945 * Do the malloc first in case it blocks. 946 */ 947 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof(*sin6)); 948 if (sin6 == NULL) 949 return (ENOMEM); 950 sin6->sin6_family = AF_INET6; 951 sin6->sin6_len = sizeof(*sin6); 952 953 inp = (struct sctp_inpcb *)so->so_pcb; 954 if (inp == NULL) { 955 SCTP_FREE_SONAME(sin6); 956 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 957 return (ECONNRESET); 958 } 959 SCTP_INP_RLOCK(inp); 960 sin6->sin6_port = inp->sctp_lport; 961 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 962 /* For the bound all case you get back 0 */ 963 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 964 struct sctp_tcb *stcb; 965 struct sockaddr_in6 *sin_a6; 966 struct sctp_nets *net; 967 int fnd; 968 969 stcb = LIST_FIRST(&inp->sctp_asoc_list); 970 if (stcb == NULL) { 971 SCTP_INP_RUNLOCK(inp); 972 SCTP_FREE_SONAME(sin6); 973 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 974 return (ENOENT); 975 } 976 fnd = 0; 977 sin_a6 = NULL; 978 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 979 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr; 980 if (sin_a6 == NULL) 981 /* this will make coverity happy */ 982 continue; 983 984 if (sin_a6->sin6_family == AF_INET6) { 985 fnd = 1; 986 break; 987 } 988 } 989 if ((!fnd) || (sin_a6 == NULL)) { 990 /* punt */ 991 SCTP_INP_RUNLOCK(inp); 992 SCTP_FREE_SONAME(sin6); 993 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 994 return (ENOENT); 995 } 996 vrf_id = inp->def_vrf_id; 997 sctp_ifa = sctp_source_address_selection(inp, stcb, (sctp_route_t *)&net->ro, net, 0, vrf_id); 998 if (sctp_ifa) { 999 sin6->sin6_addr = sctp_ifa->address.sin6.sin6_addr; 1000 } 1001 } else { 1002 /* For the bound all case you get back 0 */ 1003 memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr)); 1004 } 1005 } else { 1006 /* Take the first IPv6 address in the list */ 1007 struct sctp_laddr *laddr; 1008 int fnd = 0; 1009 1010 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { 1011 if (laddr->ifa->address.sa.sa_family == AF_INET6) { 1012 struct sockaddr_in6 *sin_a; 1013 1014 sin_a = &laddr->ifa->address.sin6; 1015 sin6->sin6_addr = sin_a->sin6_addr; 1016 fnd = 1; 1017 break; 1018 } 1019 } 1020 if (!fnd) { 1021 SCTP_FREE_SONAME(sin6); 1022 SCTP_INP_RUNLOCK(inp); 1023 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 1024 return (ENOENT); 1025 } 1026 } 1027 SCTP_INP_RUNLOCK(inp); 1028 /* Scoping things for v6 */ 1029 if ((error = sa6_recoverscope(sin6)) != 0) { 1030 SCTP_FREE_SONAME(sin6); 1031 return (error); 1032 } 1033 (*addr) = (struct sockaddr *)sin6; 1034 return (0); 1035 } 1036 1037 static int 1038 sctp6_peeraddr(struct socket *so, struct sockaddr **addr) 1039 { 1040 struct sockaddr_in6 *sin6; 1041 int fnd; 1042 struct sockaddr_in6 *sin_a6; 1043 struct sctp_inpcb *inp; 1044 struct sctp_tcb *stcb; 1045 struct sctp_nets *net; 1046 int error; 1047 1048 /* Do the malloc first in case it blocks. */ 1049 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 1050 if (sin6 == NULL) 1051 return (ENOMEM); 1052 sin6->sin6_family = AF_INET6; 1053 sin6->sin6_len = sizeof(*sin6); 1054 1055 inp = (struct sctp_inpcb *)so->so_pcb; 1056 if ((inp == NULL) || 1057 ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) { 1058 /* UDP type and listeners will drop out here */ 1059 SCTP_FREE_SONAME(sin6); 1060 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOTCONN); 1061 return (ENOTCONN); 1062 } 1063 SCTP_INP_RLOCK(inp); 1064 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1065 if (stcb) { 1066 SCTP_TCB_LOCK(stcb); 1067 } 1068 SCTP_INP_RUNLOCK(inp); 1069 if (stcb == NULL) { 1070 SCTP_FREE_SONAME(sin6); 1071 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 1072 return (ECONNRESET); 1073 } 1074 fnd = 0; 1075 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1076 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr; 1077 if (sin_a6->sin6_family == AF_INET6) { 1078 fnd = 1; 1079 sin6->sin6_port = stcb->rport; 1080 sin6->sin6_addr = sin_a6->sin6_addr; 1081 break; 1082 } 1083 } 1084 SCTP_TCB_UNLOCK(stcb); 1085 if (!fnd) { 1086 /* No IPv4 address */ 1087 SCTP_FREE_SONAME(sin6); 1088 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 1089 return (ENOENT); 1090 } 1091 if ((error = sa6_recoverscope(sin6)) != 0) { 1092 SCTP_FREE_SONAME(sin6); 1093 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, error); 1094 return (error); 1095 } 1096 *addr = (struct sockaddr *)sin6; 1097 return (0); 1098 } 1099 1100 static int 1101 sctp6_in6getaddr(struct socket *so, struct sockaddr **nam) 1102 { 1103 struct in6pcb *inp6 = sotoin6pcb(so); 1104 int error; 1105 1106 if (inp6 == NULL) { 1107 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1108 return (EINVAL); 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 /* 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