1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. 5 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. 6 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions are met: 10 * 11 * a) Redistributions of source code must retain the above copyright notice, 12 * this list of conditions and the following disclaimer. 13 * 14 * b) Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in 16 * the documentation and/or other materials provided with the distribution. 17 * 18 * c) Neither the name of Cisco Systems, Inc. nor the names of its 19 * contributors may be used to endorse or promote products derived 20 * from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 24 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 32 * THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 #include <netinet/sctp_os.h> 39 #ifdef INET6 40 #include <sys/proc.h> 41 #include <netinet/sctp_pcb.h> 42 #include <netinet/sctp_header.h> 43 #include <netinet/sctp_var.h> 44 #include <netinet6/sctp6_var.h> 45 #include <netinet/sctp_sysctl.h> 46 #include <netinet/sctp_output.h> 47 #include <netinet/sctp_uio.h> 48 #include <netinet/sctp_asconf.h> 49 #include <netinet/sctputil.h> 50 #include <netinet/sctp_indata.h> 51 #include <netinet/sctp_timer.h> 52 #include <netinet/sctp_auth.h> 53 #include <netinet/sctp_input.h> 54 #include <netinet/sctp_output.h> 55 #include <netinet/sctp_bsd_addr.h> 56 #include <netinet/sctp_crc32.h> 57 #include <netinet/icmp6.h> 58 #include <netinet/udp.h> 59 60 int 61 sctp6_input_with_port(struct mbuf **i_pak, int *offp, uint16_t port) 62 { 63 struct mbuf *m; 64 int iphlen; 65 uint32_t vrf_id; 66 uint8_t ecn_bits; 67 struct sockaddr_in6 src, dst; 68 struct ip6_hdr *ip6; 69 struct sctphdr *sh; 70 struct sctp_chunkhdr *ch; 71 int length, offset; 72 uint8_t compute_crc; 73 uint32_t mflowid; 74 uint8_t mflowtype; 75 uint16_t fibnum; 76 77 iphlen = *offp; 78 if (SCTP_GET_PKT_VRFID(*i_pak, vrf_id)) { 79 SCTP_RELEASE_PKT(*i_pak); 80 return (IPPROTO_DONE); 81 } 82 m = SCTP_HEADER_TO_CHAIN(*i_pak); 83 #ifdef SCTP_MBUF_LOGGING 84 /* Log in any input mbufs */ 85 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) { 86 sctp_log_mbc(m, SCTP_MBUF_INPUT); 87 } 88 #endif 89 #ifdef SCTP_PACKET_LOGGING 90 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LAST_PACKET_TRACING) { 91 sctp_packet_log(m); 92 } 93 #endif 94 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD, 95 "sctp6_input(): Packet of length %d received on %s with csum_flags 0x%b.\n", 96 m->m_pkthdr.len, 97 if_name(m->m_pkthdr.rcvif), 98 (int)m->m_pkthdr.csum_flags, CSUM_BITS); 99 mflowid = m->m_pkthdr.flowid; 100 mflowtype = M_HASHTYPE_GET(m); 101 fibnum = M_GETFIB(m); 102 SCTP_STAT_INCR(sctps_recvpackets); 103 SCTP_STAT_INCR_COUNTER64(sctps_inpackets); 104 /* Get IP, SCTP, and first chunk header together in the first mbuf. */ 105 offset = iphlen + sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr); 106 ip6 = mtod(m, struct ip6_hdr *); 107 IP6_EXTHDR_GET(sh, struct sctphdr *, m, iphlen, 108 (int)(sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr))); 109 if (sh == NULL) { 110 SCTP_STAT_INCR(sctps_hdrops); 111 return (IPPROTO_DONE); 112 } 113 ch = (struct sctp_chunkhdr *)((caddr_t)sh + sizeof(struct sctphdr)); 114 offset -= sizeof(struct sctp_chunkhdr); 115 memset(&src, 0, sizeof(struct sockaddr_in6)); 116 src.sin6_family = AF_INET6; 117 src.sin6_len = sizeof(struct sockaddr_in6); 118 src.sin6_port = sh->src_port; 119 src.sin6_addr = ip6->ip6_src; 120 if (in6_setscope(&src.sin6_addr, m->m_pkthdr.rcvif, NULL) != 0) { 121 goto out; 122 } 123 memset(&dst, 0, sizeof(struct sockaddr_in6)); 124 dst.sin6_family = AF_INET6; 125 dst.sin6_len = sizeof(struct sockaddr_in6); 126 dst.sin6_port = sh->dest_port; 127 dst.sin6_addr = ip6->ip6_dst; 128 if (in6_setscope(&dst.sin6_addr, m->m_pkthdr.rcvif, NULL) != 0) { 129 goto out; 130 } 131 length = ntohs(ip6->ip6_plen) + iphlen; 132 /* Validate mbuf chain length with IP payload length. */ 133 if (SCTP_HEADER_LEN(m) != length) { 134 SCTPDBG(SCTP_DEBUG_INPUT1, 135 "sctp6_input() length:%d reported length:%d\n", length, SCTP_HEADER_LEN(m)); 136 SCTP_STAT_INCR(sctps_hdrops); 137 goto out; 138 } 139 if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) { 140 goto out; 141 } 142 ecn_bits = ((ntohl(ip6->ip6_flow) >> 20) & 0x000000ff); 143 if (m->m_pkthdr.csum_flags & CSUM_SCTP_VALID) { 144 SCTP_STAT_INCR(sctps_recvhwcrc); 145 compute_crc = 0; 146 } else { 147 SCTP_STAT_INCR(sctps_recvswcrc); 148 compute_crc = 1; 149 } 150 sctp_common_input_processing(&m, iphlen, offset, length, 151 (struct sockaddr *)&src, 152 (struct sockaddr *)&dst, 153 sh, ch, 154 compute_crc, 155 ecn_bits, 156 mflowtype, mflowid, fibnum, 157 vrf_id, port); 158 out: 159 if (m) { 160 sctp_m_freem(m); 161 } 162 return (IPPROTO_DONE); 163 } 164 165 166 int 167 sctp6_input(struct mbuf **i_pak, int *offp, int proto SCTP_UNUSED) 168 { 169 return (sctp6_input_with_port(i_pak, offp, 0)); 170 } 171 172 void 173 sctp6_notify(struct sctp_inpcb *inp, 174 struct sctp_tcb *stcb, 175 struct sctp_nets *net, 176 uint8_t icmp6_type, 177 uint8_t icmp6_code, 178 uint32_t next_mtu) 179 { 180 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 181 struct socket *so; 182 #endif 183 int timer_stopped; 184 185 switch (icmp6_type) { 186 case ICMP6_DST_UNREACH: 187 if ((icmp6_code == ICMP6_DST_UNREACH_NOROUTE) || 188 (icmp6_code == ICMP6_DST_UNREACH_ADMIN) || 189 (icmp6_code == ICMP6_DST_UNREACH_BEYONDSCOPE) || 190 (icmp6_code == ICMP6_DST_UNREACH_ADDR)) { 191 /* Mark the net unreachable. */ 192 if (net->dest_state & SCTP_ADDR_REACHABLE) { 193 /* Ok that destination is not reachable */ 194 net->dest_state &= ~SCTP_ADDR_REACHABLE; 195 net->dest_state &= ~SCTP_ADDR_PF; 196 sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN, 197 stcb, 0, (void *)net, SCTP_SO_NOT_LOCKED); 198 } 199 } 200 SCTP_TCB_UNLOCK(stcb); 201 break; 202 case ICMP6_PARAM_PROB: 203 /* Treat it like an ABORT. */ 204 if (icmp6_code == ICMP6_PARAMPROB_NEXTHEADER) { 205 sctp_abort_notification(stcb, 1, 0, NULL, SCTP_SO_NOT_LOCKED); 206 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 207 so = SCTP_INP_SO(inp); 208 atomic_add_int(&stcb->asoc.refcnt, 1); 209 SCTP_TCB_UNLOCK(stcb); 210 SCTP_SOCKET_LOCK(so, 1); 211 SCTP_TCB_LOCK(stcb); 212 atomic_subtract_int(&stcb->asoc.refcnt, 1); 213 #endif 214 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, 215 SCTP_FROM_SCTP_USRREQ + SCTP_LOC_2); 216 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 217 SCTP_SOCKET_UNLOCK(so, 1); 218 #endif 219 } else { 220 SCTP_TCB_UNLOCK(stcb); 221 } 222 break; 223 case ICMP6_PACKET_TOO_BIG: 224 if (net->dest_state & SCTP_ADDR_NO_PMTUD) { 225 SCTP_TCB_UNLOCK(stcb); 226 break; 227 } 228 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) { 229 timer_stopped = 1; 230 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net, 231 SCTP_FROM_SCTP_USRREQ + SCTP_LOC_1); 232 } else { 233 timer_stopped = 0; 234 } 235 /* Update the path MTU. */ 236 if (net->port) { 237 next_mtu -= sizeof(struct udphdr); 238 } 239 if (net->mtu > next_mtu) { 240 net->mtu = next_mtu; 241 } 242 /* Update the association MTU */ 243 if (stcb->asoc.smallest_mtu > next_mtu) { 244 sctp_pathmtu_adjustment(stcb, next_mtu); 245 } 246 /* Finally, start the PMTU timer if it was running before. */ 247 if (timer_stopped) { 248 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net); 249 } 250 SCTP_TCB_UNLOCK(stcb); 251 break; 252 default: 253 SCTP_TCB_UNLOCK(stcb); 254 break; 255 } 256 } 257 258 void 259 sctp6_ctlinput(int cmd, struct sockaddr *pktdst, void *d) 260 { 261 struct ip6ctlparam *ip6cp; 262 struct sctp_inpcb *inp; 263 struct sctp_tcb *stcb; 264 struct sctp_nets *net; 265 struct sctphdr sh; 266 struct sockaddr_in6 src, dst; 267 268 if (pktdst->sa_family != AF_INET6 || 269 pktdst->sa_len != sizeof(struct sockaddr_in6)) { 270 return; 271 } 272 273 if ((unsigned)cmd >= PRC_NCMDS) { 274 return; 275 } 276 if (PRC_IS_REDIRECT(cmd)) { 277 d = NULL; 278 } else if (inet6ctlerrmap[cmd] == 0) { 279 return; 280 } 281 /* If the parameter is from icmp6, decode it. */ 282 if (d != NULL) { 283 ip6cp = (struct ip6ctlparam *)d; 284 } else { 285 ip6cp = (struct ip6ctlparam *)NULL; 286 } 287 288 if (ip6cp != NULL) { 289 /* 290 * XXX: We assume that when IPV6 is non NULL, M and OFF are 291 * valid. 292 */ 293 if (ip6cp->ip6c_m == NULL) { 294 return; 295 } 296 297 /* 298 * Check if we can safely examine the ports and the 299 * verification tag of the SCTP common header. 300 */ 301 if (ip6cp->ip6c_m->m_pkthdr.len < 302 (int32_t)(ip6cp->ip6c_off + offsetof(struct sctphdr, checksum))) { 303 return; 304 } 305 306 /* Copy out the port numbers and the verification tag. */ 307 memset(&sh, 0, sizeof(sh)); 308 m_copydata(ip6cp->ip6c_m, 309 ip6cp->ip6c_off, 310 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t), 311 (caddr_t)&sh); 312 memset(&src, 0, sizeof(struct sockaddr_in6)); 313 src.sin6_family = AF_INET6; 314 src.sin6_len = sizeof(struct sockaddr_in6); 315 src.sin6_port = sh.src_port; 316 src.sin6_addr = ip6cp->ip6c_ip6->ip6_src; 317 if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) { 318 return; 319 } 320 memset(&dst, 0, sizeof(struct sockaddr_in6)); 321 dst.sin6_family = AF_INET6; 322 dst.sin6_len = sizeof(struct sockaddr_in6); 323 dst.sin6_port = sh.dest_port; 324 dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst; 325 if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) { 326 return; 327 } 328 inp = NULL; 329 net = NULL; 330 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst, 331 (struct sockaddr *)&src, 332 &inp, &net, 1, SCTP_DEFAULT_VRFID); 333 if ((stcb != NULL) && 334 (net != NULL) && 335 (inp != NULL)) { 336 /* Check the verification tag */ 337 if (ntohl(sh.v_tag) != 0) { 338 /* 339 * This must be the verification tag used 340 * for sending out packets. We don't 341 * consider packets reflecting the 342 * verification tag. 343 */ 344 if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) { 345 SCTP_TCB_UNLOCK(stcb); 346 return; 347 } 348 } else { 349 if (ip6cp->ip6c_m->m_pkthdr.len >= 350 ip6cp->ip6c_off + sizeof(struct sctphdr) + 351 sizeof(struct sctp_chunkhdr) + 352 offsetof(struct sctp_init, a_rwnd)) { 353 /* 354 * In this case we can check if we 355 * got an INIT chunk and if the 356 * initiate tag matches. 357 */ 358 uint32_t initiate_tag; 359 uint8_t chunk_type; 360 361 m_copydata(ip6cp->ip6c_m, 362 ip6cp->ip6c_off + 363 sizeof(struct sctphdr), 364 sizeof(uint8_t), 365 (caddr_t)&chunk_type); 366 m_copydata(ip6cp->ip6c_m, 367 ip6cp->ip6c_off + 368 sizeof(struct sctphdr) + 369 sizeof(struct sctp_chunkhdr), 370 sizeof(uint32_t), 371 (caddr_t)&initiate_tag); 372 if ((chunk_type != SCTP_INITIATION) || 373 (ntohl(initiate_tag) != stcb->asoc.my_vtag)) { 374 SCTP_TCB_UNLOCK(stcb); 375 return; 376 } 377 } else { 378 SCTP_TCB_UNLOCK(stcb); 379 return; 380 } 381 } 382 sctp6_notify(inp, stcb, net, 383 ip6cp->ip6c_icmp6->icmp6_type, 384 ip6cp->ip6c_icmp6->icmp6_code, 385 ntohl(ip6cp->ip6c_icmp6->icmp6_mtu)); 386 } else { 387 if ((stcb == NULL) && (inp != NULL)) { 388 /* reduce inp's ref-count */ 389 SCTP_INP_WLOCK(inp); 390 SCTP_INP_DECR_REF(inp); 391 SCTP_INP_WUNLOCK(inp); 392 } 393 if (stcb) { 394 SCTP_TCB_UNLOCK(stcb); 395 } 396 } 397 } 398 } 399 400 /* 401 * this routine can probably be collasped into the one in sctp_userreq.c 402 * since they do the same thing and now we lookup with a sockaddr 403 */ 404 static int 405 sctp6_getcred(SYSCTL_HANDLER_ARGS) 406 { 407 struct xucred xuc; 408 struct sockaddr_in6 addrs[2]; 409 struct sctp_inpcb *inp; 410 struct sctp_nets *net; 411 struct sctp_tcb *stcb; 412 int error; 413 uint32_t vrf_id; 414 415 vrf_id = SCTP_DEFAULT_VRFID; 416 417 error = priv_check(req->td, PRIV_NETINET_GETCRED); 418 if (error) 419 return (error); 420 421 if (req->newlen != sizeof(addrs)) { 422 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 423 return (EINVAL); 424 } 425 if (req->oldlen != sizeof(struct ucred)) { 426 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 427 return (EINVAL); 428 } 429 error = SYSCTL_IN(req, addrs, sizeof(addrs)); 430 if (error) 431 return (error); 432 433 stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[1]), 434 sin6tosa(&addrs[0]), 435 &inp, &net, 1, vrf_id); 436 if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) { 437 if ((inp != NULL) && (stcb == NULL)) { 438 /* reduce ref-count */ 439 SCTP_INP_WLOCK(inp); 440 SCTP_INP_DECR_REF(inp); 441 goto cred_can_cont; 442 } 443 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 444 error = ENOENT; 445 goto out; 446 } 447 SCTP_TCB_UNLOCK(stcb); 448 /* 449 * We use the write lock here, only since in the error leg we need 450 * it. If we used RLOCK, then we would have to 451 * wlock/decr/unlock/rlock. Which in theory could create a hole. 452 * Better to use higher wlock. 453 */ 454 SCTP_INP_WLOCK(inp); 455 cred_can_cont: 456 error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket); 457 if (error) { 458 SCTP_INP_WUNLOCK(inp); 459 goto out; 460 } 461 cru2x(inp->sctp_socket->so_cred, &xuc); 462 SCTP_INP_WUNLOCK(inp); 463 error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred)); 464 out: 465 return (error); 466 } 467 468 SYSCTL_PROC(_net_inet6_sctp6, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW, 469 0, 0, 470 sctp6_getcred, "S,ucred", "Get the ucred of a SCTP6 connection"); 471 472 473 /* This is the same as the sctp_abort() could be made common */ 474 static void 475 sctp6_abort(struct socket *so) 476 { 477 struct sctp_inpcb *inp; 478 uint32_t flags; 479 480 inp = (struct sctp_inpcb *)so->so_pcb; 481 if (inp == NULL) { 482 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 483 return; 484 } 485 sctp_must_try_again: 486 flags = inp->sctp_flags; 487 #ifdef SCTP_LOG_CLOSING 488 sctp_log_closing(inp, NULL, 17); 489 #endif 490 if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) && 491 (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) { 492 #ifdef SCTP_LOG_CLOSING 493 sctp_log_closing(inp, NULL, 16); 494 #endif 495 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 496 SCTP_CALLED_AFTER_CMPSET_OFCLOSE); 497 SOCK_LOCK(so); 498 SCTP_SB_CLEAR(so->so_snd); 499 /* 500 * same for the rcv ones, they are only here for the 501 * accounting/select. 502 */ 503 SCTP_SB_CLEAR(so->so_rcv); 504 /* Now null out the reference, we are completely detached. */ 505 so->so_pcb = NULL; 506 SOCK_UNLOCK(so); 507 } else { 508 flags = inp->sctp_flags; 509 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) { 510 goto sctp_must_try_again; 511 } 512 } 513 return; 514 } 515 516 static int 517 sctp6_attach(struct socket *so, int proto SCTP_UNUSED, struct thread *p SCTP_UNUSED) 518 { 519 int error; 520 struct sctp_inpcb *inp; 521 uint32_t vrf_id = SCTP_DEFAULT_VRFID; 522 523 inp = (struct sctp_inpcb *)so->so_pcb; 524 if (inp != NULL) { 525 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 526 return (EINVAL); 527 } 528 529 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 530 error = SCTP_SORESERVE(so, SCTP_BASE_SYSCTL(sctp_sendspace), SCTP_BASE_SYSCTL(sctp_recvspace)); 531 if (error) 532 return (error); 533 } 534 error = sctp_inpcb_alloc(so, vrf_id); 535 if (error) 536 return (error); 537 inp = (struct sctp_inpcb *)so->so_pcb; 538 SCTP_INP_WLOCK(inp); 539 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUND_V6; /* I'm v6! */ 540 541 inp->ip_inp.inp.inp_vflag |= INP_IPV6; 542 inp->ip_inp.inp.in6p_hops = -1; /* use kernel default */ 543 inp->ip_inp.inp.in6p_cksum = -1; /* just to be sure */ 544 #ifdef INET 545 /* 546 * XXX: ugly!! IPv4 TTL initialization is necessary for an IPv6 547 * socket as well, because the socket may be bound to an IPv6 548 * wildcard address, which may match an IPv4-mapped IPv6 address. 549 */ 550 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl); 551 #endif 552 SCTP_INP_WUNLOCK(inp); 553 return (0); 554 } 555 556 static int 557 sctp6_bind(struct socket *so, struct sockaddr *addr, struct thread *p) 558 { 559 struct sctp_inpcb *inp; 560 int error; 561 u_char vflagsav; 562 563 inp = (struct sctp_inpcb *)so->so_pcb; 564 if (inp == NULL) { 565 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 566 return (EINVAL); 567 } 568 569 if (addr) { 570 switch (addr->sa_family) { 571 #ifdef INET 572 case AF_INET: 573 if (addr->sa_len != sizeof(struct sockaddr_in)) { 574 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 575 return (EINVAL); 576 } 577 break; 578 #endif 579 #ifdef INET6 580 case AF_INET6: 581 if (addr->sa_len != sizeof(struct sockaddr_in6)) { 582 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 583 return (EINVAL); 584 } 585 break; 586 #endif 587 default: 588 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 589 return (EINVAL); 590 } 591 } 592 vflagsav = inp->ip_inp.inp.inp_vflag; 593 inp->ip_inp.inp.inp_vflag &= ~INP_IPV4; 594 inp->ip_inp.inp.inp_vflag |= INP_IPV6; 595 if ((addr != NULL) && (SCTP_IPV6_V6ONLY(inp) == 0)) { 596 switch (addr->sa_family) { 597 #ifdef INET 598 case AF_INET: 599 /* binding v4 addr to v6 socket, so reset flags */ 600 inp->ip_inp.inp.inp_vflag |= INP_IPV4; 601 inp->ip_inp.inp.inp_vflag &= ~INP_IPV6; 602 break; 603 #endif 604 #ifdef INET6 605 case AF_INET6: 606 { 607 struct sockaddr_in6 *sin6_p; 608 609 sin6_p = (struct sockaddr_in6 *)addr; 610 611 if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr)) { 612 inp->ip_inp.inp.inp_vflag |= INP_IPV4; 613 } 614 #ifdef INET 615 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { 616 struct sockaddr_in sin; 617 618 in6_sin6_2_sin(&sin, sin6_p); 619 inp->ip_inp.inp.inp_vflag |= INP_IPV4; 620 inp->ip_inp.inp.inp_vflag &= ~INP_IPV6; 621 error = sctp_inpcb_bind(so, (struct sockaddr *)&sin, NULL, p); 622 goto out; 623 } 624 #endif 625 break; 626 } 627 #endif 628 default: 629 break; 630 } 631 } else if (addr != NULL) { 632 struct sockaddr_in6 *sin6_p; 633 634 /* IPV6_V6ONLY socket */ 635 #ifdef INET 636 if (addr->sa_family == AF_INET) { 637 /* can't bind v4 addr to v6 only socket! */ 638 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 639 error = EINVAL; 640 goto out; 641 } 642 #endif 643 sin6_p = (struct sockaddr_in6 *)addr; 644 645 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { 646 /* can't bind v4-mapped addrs either! */ 647 /* NOTE: we don't support SIIT */ 648 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 649 error = EINVAL; 650 goto out; 651 } 652 } 653 error = sctp_inpcb_bind(so, addr, NULL, p); 654 out: 655 if (error != 0) 656 inp->ip_inp.inp.inp_vflag = vflagsav; 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; 687 688 #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 /* 704 * For the TCP model we may get a NULL addr, if we are a connected 705 * socket thats ok. 706 */ 707 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) && 708 (addr == NULL)) { 709 goto connected_type; 710 } 711 if (addr == NULL) { 712 SCTP_RELEASE_PKT(m); 713 if (control) { 714 SCTP_RELEASE_PKT(control); 715 control = NULL; 716 } 717 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EDESTADDRREQ); 718 return (EDESTADDRREQ); 719 } 720 #ifdef INET 721 sin6 = (struct sockaddr_in6 *)addr; 722 if (SCTP_IPV6_V6ONLY(inp)) { 723 /* 724 * if IPV6_V6ONLY flag, we discard datagrams destined to a 725 * v4 addr or v4-mapped addr 726 */ 727 if (addr->sa_family == AF_INET) { 728 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 729 return (EINVAL); 730 } 731 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 732 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 733 return (EINVAL); 734 } 735 } 736 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 737 struct sockaddr_in sin; 738 739 /* convert v4-mapped into v4 addr and send */ 740 in6_sin6_2_sin(&sin, sin6); 741 return (sctp_sendm(so, flags, m, (struct sockaddr *)&sin, control, p)); 742 } 743 #endif /* INET */ 744 connected_type: 745 /* now what about control */ 746 if (control) { 747 if (inp->control) { 748 SCTP_PRINTF("huh? control set?\n"); 749 SCTP_RELEASE_PKT(inp->control); 750 inp->control = NULL; 751 } 752 inp->control = control; 753 } 754 /* Place the data */ 755 if (inp->pkt) { 756 SCTP_BUF_NEXT(inp->pkt_last) = m; 757 inp->pkt_last = m; 758 } else { 759 inp->pkt_last = inp->pkt = m; 760 } 761 if ( 762 /* FreeBSD and MacOSX uses a flag passed */ 763 ((flags & PRUS_MORETOCOME) == 0) 764 ) { 765 /* 766 * note with the current version this code will only be used 767 * by OpenBSD, NetBSD and FreeBSD have methods for 768 * re-defining sosend() to use sctp_sosend(). One can 769 * optionaly switch back to this code (by changing back the 770 * defininitions but this is not advisable. 771 */ 772 int ret; 773 774 ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags); 775 inp->pkt = NULL; 776 inp->control = NULL; 777 return (ret); 778 } else { 779 return (0); 780 } 781 } 782 783 static int 784 sctp6_connect(struct socket *so, struct sockaddr *addr, struct thread *p) 785 { 786 uint32_t vrf_id; 787 int error = 0; 788 struct sctp_inpcb *inp; 789 struct sctp_tcb *stcb; 790 #ifdef INET 791 struct sockaddr_in6 *sin6; 792 union sctp_sockstore store; 793 #endif 794 795 inp = (struct sctp_inpcb *)so->so_pcb; 796 if (inp == NULL) { 797 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 798 return (ECONNRESET); /* I made the same as TCP since we are 799 * not setup? */ 800 } 801 if (addr == NULL) { 802 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 803 return (EINVAL); 804 } 805 switch (addr->sa_family) { 806 #ifdef INET 807 case AF_INET: 808 if (addr->sa_len != sizeof(struct sockaddr_in)) { 809 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 810 return (EINVAL); 811 } 812 break; 813 #endif 814 #ifdef INET6 815 case AF_INET6: 816 if (addr->sa_len != sizeof(struct sockaddr_in6)) { 817 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 818 return (EINVAL); 819 } 820 break; 821 #endif 822 default: 823 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 824 return (EINVAL); 825 } 826 827 vrf_id = inp->def_vrf_id; 828 SCTP_ASOC_CREATE_LOCK(inp); 829 SCTP_INP_RLOCK(inp); 830 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 831 SCTP_PCB_FLAGS_UNBOUND) { 832 /* Bind a ephemeral port */ 833 SCTP_INP_RUNLOCK(inp); 834 error = sctp6_bind(so, NULL, p); 835 if (error) { 836 SCTP_ASOC_CREATE_UNLOCK(inp); 837 838 return (error); 839 } 840 SCTP_INP_RLOCK(inp); 841 } 842 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && 843 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) { 844 /* We are already connected AND the TCP model */ 845 SCTP_INP_RUNLOCK(inp); 846 SCTP_ASOC_CREATE_UNLOCK(inp); 847 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EADDRINUSE); 848 return (EADDRINUSE); 849 } 850 #ifdef INET 851 sin6 = (struct sockaddr_in6 *)addr; 852 if (SCTP_IPV6_V6ONLY(inp)) { 853 /* 854 * if IPV6_V6ONLY flag, ignore connections destined to a v4 855 * addr or v4-mapped addr 856 */ 857 if (addr->sa_family == AF_INET) { 858 SCTP_INP_RUNLOCK(inp); 859 SCTP_ASOC_CREATE_UNLOCK(inp); 860 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 861 return (EINVAL); 862 } 863 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 864 SCTP_INP_RUNLOCK(inp); 865 SCTP_ASOC_CREATE_UNLOCK(inp); 866 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 867 return (EINVAL); 868 } 869 } 870 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 871 /* convert v4-mapped into v4 addr */ 872 in6_sin6_2_sin(&store.sin, sin6); 873 addr = &store.sa; 874 } 875 #endif /* INET */ 876 /* Now do we connect? */ 877 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 878 stcb = LIST_FIRST(&inp->sctp_asoc_list); 879 if (stcb) { 880 SCTP_TCB_LOCK(stcb); 881 } 882 SCTP_INP_RUNLOCK(inp); 883 } else { 884 SCTP_INP_RUNLOCK(inp); 885 SCTP_INP_WLOCK(inp); 886 SCTP_INP_INCR_REF(inp); 887 SCTP_INP_WUNLOCK(inp); 888 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL); 889 if (stcb == NULL) { 890 SCTP_INP_WLOCK(inp); 891 SCTP_INP_DECR_REF(inp); 892 SCTP_INP_WUNLOCK(inp); 893 } 894 } 895 896 if (stcb != NULL) { 897 /* Already have or am bring up an association */ 898 SCTP_ASOC_CREATE_UNLOCK(inp); 899 SCTP_TCB_UNLOCK(stcb); 900 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EALREADY); 901 return (EALREADY); 902 } 903 /* We are GOOD to go */ 904 stcb = sctp_aloc_assoc(inp, addr, &error, 0, vrf_id, 905 inp->sctp_ep.pre_open_stream_count, 906 inp->sctp_ep.port, p, 907 SCTP_INITIALIZE_AUTH_PARAMS); 908 SCTP_ASOC_CREATE_UNLOCK(inp); 909 if (stcb == NULL) { 910 /* Gak! no memory */ 911 return (error); 912 } 913 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { 914 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; 915 /* Set the connected flag so we can queue data */ 916 soisconnecting(so); 917 } 918 SCTP_SET_STATE(stcb, SCTP_STATE_COOKIE_WAIT); 919 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); 920 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED); 921 SCTP_TCB_UNLOCK(stcb); 922 return (error); 923 } 924 925 static int 926 sctp6_getaddr(struct socket *so, struct sockaddr **addr) 927 { 928 struct sockaddr_in6 *sin6; 929 struct sctp_inpcb *inp; 930 uint32_t vrf_id; 931 struct sctp_ifa *sctp_ifa; 932 933 int error; 934 935 /* 936 * Do the malloc first in case it blocks. 937 */ 938 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof(*sin6)); 939 if (sin6 == NULL) 940 return (ENOMEM); 941 sin6->sin6_family = AF_INET6; 942 sin6->sin6_len = sizeof(*sin6); 943 944 inp = (struct sctp_inpcb *)so->so_pcb; 945 if (inp == NULL) { 946 SCTP_FREE_SONAME(sin6); 947 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 948 return (ECONNRESET); 949 } 950 SCTP_INP_RLOCK(inp); 951 sin6->sin6_port = inp->sctp_lport; 952 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 953 /* For the bound all case you get back 0 */ 954 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 955 struct sctp_tcb *stcb; 956 struct sockaddr_in6 *sin_a6; 957 struct sctp_nets *net; 958 int fnd; 959 960 stcb = LIST_FIRST(&inp->sctp_asoc_list); 961 if (stcb == NULL) { 962 SCTP_INP_RUNLOCK(inp); 963 SCTP_FREE_SONAME(sin6); 964 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 965 return (ENOENT); 966 } 967 fnd = 0; 968 sin_a6 = NULL; 969 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 970 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr; 971 if (sin_a6 == NULL) 972 /* this will make coverity happy */ 973 continue; 974 975 if (sin_a6->sin6_family == AF_INET6) { 976 fnd = 1; 977 break; 978 } 979 } 980 if ((!fnd) || (sin_a6 == NULL)) { 981 /* punt */ 982 SCTP_INP_RUNLOCK(inp); 983 SCTP_FREE_SONAME(sin6); 984 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 985 return (ENOENT); 986 } 987 vrf_id = inp->def_vrf_id; 988 sctp_ifa = sctp_source_address_selection(inp, stcb, (sctp_route_t *)&net->ro, net, 0, vrf_id); 989 if (sctp_ifa) { 990 sin6->sin6_addr = sctp_ifa->address.sin6.sin6_addr; 991 } 992 } else { 993 /* For the bound all case you get back 0 */ 994 memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr)); 995 } 996 } else { 997 /* Take the first IPv6 address in the list */ 998 struct sctp_laddr *laddr; 999 int fnd = 0; 1000 1001 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { 1002 if (laddr->ifa->address.sa.sa_family == AF_INET6) { 1003 struct sockaddr_in6 *sin_a; 1004 1005 sin_a = &laddr->ifa->address.sin6; 1006 sin6->sin6_addr = sin_a->sin6_addr; 1007 fnd = 1; 1008 break; 1009 } 1010 } 1011 if (!fnd) { 1012 SCTP_FREE_SONAME(sin6); 1013 SCTP_INP_RUNLOCK(inp); 1014 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 1015 return (ENOENT); 1016 } 1017 } 1018 SCTP_INP_RUNLOCK(inp); 1019 /* Scoping things for v6 */ 1020 if ((error = sa6_recoverscope(sin6)) != 0) { 1021 SCTP_FREE_SONAME(sin6); 1022 return (error); 1023 } 1024 (*addr) = (struct sockaddr *)sin6; 1025 return (0); 1026 } 1027 1028 static int 1029 sctp6_peeraddr(struct socket *so, struct sockaddr **addr) 1030 { 1031 struct sockaddr_in6 *sin6; 1032 int fnd; 1033 struct sockaddr_in6 *sin_a6; 1034 struct sctp_inpcb *inp; 1035 struct sctp_tcb *stcb; 1036 struct sctp_nets *net; 1037 int error; 1038 1039 /* Do the malloc first in case it blocks. */ 1040 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 1041 if (sin6 == NULL) 1042 return (ENOMEM); 1043 sin6->sin6_family = AF_INET6; 1044 sin6->sin6_len = sizeof(*sin6); 1045 1046 inp = (struct sctp_inpcb *)so->so_pcb; 1047 if ((inp == NULL) || 1048 ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) { 1049 /* UDP type and listeners will drop out here */ 1050 SCTP_FREE_SONAME(sin6); 1051 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOTCONN); 1052 return (ENOTCONN); 1053 } 1054 SCTP_INP_RLOCK(inp); 1055 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1056 if (stcb) { 1057 SCTP_TCB_LOCK(stcb); 1058 } 1059 SCTP_INP_RUNLOCK(inp); 1060 if (stcb == NULL) { 1061 SCTP_FREE_SONAME(sin6); 1062 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 1063 return (ECONNRESET); 1064 } 1065 fnd = 0; 1066 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1067 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr; 1068 if (sin_a6->sin6_family == AF_INET6) { 1069 fnd = 1; 1070 sin6->sin6_port = stcb->rport; 1071 sin6->sin6_addr = sin_a6->sin6_addr; 1072 break; 1073 } 1074 } 1075 SCTP_TCB_UNLOCK(stcb); 1076 if (!fnd) { 1077 /* No IPv4 address */ 1078 SCTP_FREE_SONAME(sin6); 1079 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 1080 return (ENOENT); 1081 } 1082 if ((error = sa6_recoverscope(sin6)) != 0) { 1083 SCTP_FREE_SONAME(sin6); 1084 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, error); 1085 return (error); 1086 } 1087 *addr = (struct sockaddr *)sin6; 1088 return (0); 1089 } 1090 1091 static int 1092 sctp6_in6getaddr(struct socket *so, struct sockaddr **nam) 1093 { 1094 struct inpcb *inp = sotoinpcb(so); 1095 int error; 1096 1097 if (inp == NULL) { 1098 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1099 return (EINVAL); 1100 } 1101 1102 /* allow v6 addresses precedence */ 1103 error = sctp6_getaddr(so, nam); 1104 #ifdef INET 1105 if (error) { 1106 struct sockaddr_in6 *sin6; 1107 1108 /* try v4 next if v6 failed */ 1109 error = sctp_ingetaddr(so, nam); 1110 if (error) { 1111 return (error); 1112 } 1113 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 1114 if (sin6 == NULL) { 1115 SCTP_FREE_SONAME(*nam); 1116 return (ENOMEM); 1117 } 1118 in6_sin_2_v4mapsin6((struct sockaddr_in *)*nam, sin6); 1119 SCTP_FREE_SONAME(*nam); 1120 *nam = (struct sockaddr *)sin6; 1121 } 1122 #endif 1123 return (error); 1124 } 1125 1126 1127 static int 1128 sctp6_getpeeraddr(struct socket *so, struct sockaddr **nam) 1129 { 1130 struct inpcb *inp = sotoinpcb(so); 1131 int error; 1132 1133 if (inp == NULL) { 1134 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1135 return (EINVAL); 1136 } 1137 1138 /* allow v6 addresses precedence */ 1139 error = sctp6_peeraddr(so, nam); 1140 #ifdef INET 1141 if (error) { 1142 struct sockaddr_in6 *sin6; 1143 1144 /* try v4 next if v6 failed */ 1145 error = sctp_peeraddr(so, nam); 1146 if (error) { 1147 return (error); 1148 } 1149 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 1150 if (sin6 == NULL) { 1151 SCTP_FREE_SONAME(*nam); 1152 return (ENOMEM); 1153 } 1154 in6_sin_2_v4mapsin6((struct sockaddr_in *)*nam, sin6); 1155 SCTP_FREE_SONAME(*nam); 1156 *nam = (struct sockaddr *)sin6; 1157 } 1158 #endif 1159 return (error); 1160 } 1161 1162 struct pr_usrreqs sctp6_usrreqs = { 1163 .pru_abort = sctp6_abort, 1164 .pru_accept = sctp_accept, 1165 .pru_attach = sctp6_attach, 1166 .pru_bind = sctp6_bind, 1167 .pru_connect = sctp6_connect, 1168 .pru_control = in6_control, 1169 .pru_close = sctp6_close, 1170 .pru_detach = sctp6_close, 1171 .pru_sopoll = sopoll_generic, 1172 .pru_flush = sctp_flush, 1173 .pru_disconnect = sctp6_disconnect, 1174 .pru_listen = sctp_listen, 1175 .pru_peeraddr = sctp6_getpeeraddr, 1176 .pru_send = sctp6_send, 1177 .pru_shutdown = sctp_shutdown, 1178 .pru_sockaddr = sctp6_in6getaddr, 1179 .pru_sosend = sctp_sosend, 1180 .pru_soreceive = sctp_soreceive 1181 }; 1182 1183 #endif 1184