sctp6_usrreq.c revision 172090
1/*- 2 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * a) Redistributions of source code must retain the above copyright notice, 8 * this list of conditions and the following disclaimer. 9 * 10 * b) Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the distribution. 13 * 14 * c) Neither the name of Cisco Systems, Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived 16 * from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 20 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 28 * THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30/* $KAME: sctp6_usrreq.c,v 1.38 2005/08/24 08:08:56 suz Exp $ */ 31#include <sys/cdefs.h> 32__FBSDID("$FreeBSD: head/sys/netinet6/sctp6_usrreq.c 172090 2007-09-08 11:35:11Z rrs $"); 33 34 35#include <netinet/sctp_os.h> 36#include <sys/proc.h> 37#include <netinet/sctp_pcb.h> 38#include <netinet/sctp_header.h> 39#include <netinet/sctp_var.h> 40#if defined(INET6) 41#include <netinet6/sctp6_var.h> 42#endif 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 55#ifdef IPSEC 56#include <netipsec/ipsec.h> 57#if defined(INET6) 58#include <netipsec/ipsec6.h> 59#endif /* INET6 */ 60#endif /* IPSEC */ 61 62extern struct protosw inetsw[]; 63 64int 65sctp6_input(struct mbuf **i_pak, int *offp, int proto) 66{ 67 struct mbuf *m; 68 struct ip6_hdr *ip6; 69 struct sctphdr *sh; 70 struct sctp_inpcb *in6p = NULL; 71 struct sctp_nets *net; 72 int refcount_up = 0; 73 uint32_t check, calc_check; 74 uint32_t vrf_id = 0; 75 struct inpcb *in6p_ip; 76 struct sctp_chunkhdr *ch; 77 int length, mlen, offset, iphlen; 78 uint8_t ecn_bits; 79 struct sctp_tcb *stcb = NULL; 80 int pkt_len = 0; 81 int off = *offp; 82 83 /* get the VRF and table id's */ 84 if (SCTP_GET_PKT_VRFID(*i_pak, vrf_id)) { 85 SCTP_RELEASE_PKT(*i_pak); 86 return (-1); 87 } 88 m = SCTP_HEADER_TO_CHAIN(*i_pak); 89 pkt_len = SCTP_HEADER_LEN((*i_pak)); 90 91#ifdef SCTP_PACKET_LOGGING 92 sctp_packet_log(m, pkt_len); 93#endif 94 ip6 = mtod(m, struct ip6_hdr *); 95 /* Ensure that (sctphdr + sctp_chunkhdr) in a row. */ 96 IP6_EXTHDR_GET(sh, struct sctphdr *, m, off, 97 (int)(sizeof(*sh) + sizeof(*ch))); 98 if (sh == NULL) { 99 SCTP_STAT_INCR(sctps_hdrops); 100 return IPPROTO_DONE; 101 } 102 ch = (struct sctp_chunkhdr *)((caddr_t)sh + sizeof(struct sctphdr)); 103 iphlen = off; 104 offset = iphlen + sizeof(*sh) + sizeof(*ch); 105 SCTPDBG(SCTP_DEBUG_INPUT1, 106 "sctp6_input() length:%d iphlen:%d\n", pkt_len, iphlen); 107 108 109#if defined(NFAITH) && NFAITH > 0 110 111 if (faithprefix_p != NULL && (*faithprefix_p) (&ip6->ip6_dst)) { 112 /* XXX send icmp6 host/port unreach? */ 113 goto bad; 114 } 115#endif /* NFAITH defined and > 0 */ 116 SCTP_STAT_INCR(sctps_recvpackets); 117 SCTP_STAT_INCR_COUNTER64(sctps_inpackets); 118 SCTPDBG(SCTP_DEBUG_INPUT1, "V6 input gets a packet iphlen:%d pktlen:%d\n", 119 iphlen, pkt_len); 120 if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) { 121 /* No multi-cast support in SCTP */ 122 goto bad; 123 } 124 /* destination port of 0 is illegal, based on RFC2960. */ 125 if (sh->dest_port == 0) 126 goto bad; 127 check = sh->checksum; /* save incoming checksum */ 128 if ((check == 0) && (sctp_no_csum_on_loopback) && 129 (IN6_ARE_ADDR_EQUAL(&ip6->ip6_src, &ip6->ip6_dst))) { 130 goto sctp_skip_csum; 131 } 132 sh->checksum = 0; /* prepare for calc */ 133 calc_check = sctp_calculate_sum(m, &mlen, iphlen); 134 if (calc_check != check) { 135 SCTPDBG(SCTP_DEBUG_INPUT1, "Bad CSUM on SCTP packet calc_check:%x check:%x m:%p mlen:%d iphlen:%d\n", 136 calc_check, check, m, mlen, iphlen); 137 stcb = sctp_findassociation_addr(m, iphlen, offset - sizeof(*ch), 138 sh, ch, &in6p, &net, vrf_id); 139 /* in6p's ref-count increased && stcb locked */ 140 if ((in6p) && (stcb)) { 141 sctp_send_packet_dropped(stcb, net, m, iphlen, 1); 142 sctp_chunk_output((struct sctp_inpcb *)in6p, stcb, SCTP_OUTPUT_FROM_INPUT_ERROR, SCTP_SO_NOT_LOCKED); 143 } else if ((in6p != NULL) && (stcb == NULL)) { 144 refcount_up = 1; 145 } 146 SCTP_STAT_INCR(sctps_badsum); 147 SCTP_STAT_INCR_COUNTER32(sctps_checksumerrors); 148 goto bad; 149 } 150 sh->checksum = calc_check; 151 152sctp_skip_csum: 153 net = NULL; 154 /* 155 * Locate pcb and tcb for datagram sctp_findassociation_addr() wants 156 * IP/SCTP/first chunk header... 157 */ 158 stcb = sctp_findassociation_addr(m, iphlen, offset - sizeof(*ch), 159 sh, ch, &in6p, &net, vrf_id); 160 /* in6p's ref-count increased */ 161 if (in6p == NULL) { 162 struct sctp_init_chunk *init_chk, chunk_buf; 163 164 SCTP_STAT_INCR(sctps_noport); 165 if (ch->chunk_type == SCTP_INITIATION) { 166 /* 167 * we do a trick here to get the INIT tag, dig in 168 * and get the tag from the INIT and put it in the 169 * common header. 170 */ 171 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m, 172 iphlen + sizeof(*sh), sizeof(*init_chk), 173 (uint8_t *) & chunk_buf); 174 if (init_chk) 175 sh->v_tag = init_chk->init.initiate_tag; 176 else 177 sh->v_tag = 0; 178 } 179 if (ch->chunk_type == SCTP_SHUTDOWN_ACK) { 180 sctp_send_shutdown_complete2(m, iphlen, sh, vrf_id); 181 goto bad; 182 } 183 if (ch->chunk_type == SCTP_SHUTDOWN_COMPLETE) { 184 goto bad; 185 } 186 if (ch->chunk_type != SCTP_ABORT_ASSOCIATION) 187 sctp_send_abort(m, iphlen, sh, 0, NULL, vrf_id); 188 goto bad; 189 } else if (stcb == NULL) { 190 refcount_up = 1; 191 } 192 in6p_ip = (struct inpcb *)in6p; 193#ifdef IPSEC 194 /* 195 * Check AH/ESP integrity. 196 */ 197 if (in6p_ip && (ipsec6_in_reject(m, in6p_ip))) { 198/* XXX */ 199 ipsec6stat.in_polvio++; 200 goto bad; 201 } 202#endif /* IPSEC */ 203 204 /* 205 * CONTROL chunk processing 206 */ 207 offset -= sizeof(*ch); 208 ecn_bits = ((ntohl(ip6->ip6_flow) >> 20) & 0x000000ff); 209 210 /* Length now holds the total packet length payload + iphlen */ 211 length = ntohs(ip6->ip6_plen) + iphlen; 212 213 /* sa_ignore NO_NULL_CHK */ 214 sctp_common_input_processing(&m, iphlen, offset, length, sh, ch, 215 in6p, stcb, net, ecn_bits, vrf_id); 216 /* inp's ref-count reduced && stcb unlocked */ 217 /* XXX this stuff below gets moved to appropriate parts later... */ 218 if (m) 219 sctp_m_freem(m); 220 if ((in6p) && refcount_up) { 221 /* reduce ref-count */ 222 SCTP_INP_WLOCK(in6p); 223 SCTP_INP_DECR_REF(in6p); 224 SCTP_INP_WUNLOCK(in6p); 225 } 226 return IPPROTO_DONE; 227 228bad: 229 if (stcb) { 230 SCTP_TCB_UNLOCK(stcb); 231 } 232 if ((in6p) && refcount_up) { 233 /* reduce ref-count */ 234 SCTP_INP_WLOCK(in6p); 235 SCTP_INP_DECR_REF(in6p); 236 SCTP_INP_WUNLOCK(in6p); 237 } 238 if (m) 239 sctp_m_freem(m); 240 return IPPROTO_DONE; 241} 242 243 244static void 245sctp6_notify_mbuf(struct sctp_inpcb *inp, struct icmp6_hdr *icmp6, 246 struct sctphdr *sh, struct sctp_tcb *stcb, struct sctp_nets *net) 247{ 248 uint32_t nxtsz; 249 250 if ((inp == NULL) || (stcb == NULL) || (net == NULL) || 251 (icmp6 == NULL) || (sh == NULL)) { 252 goto out; 253 } 254 /* First do we even look at it? */ 255 if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) 256 goto out; 257 258 if (icmp6->icmp6_type != ICMP6_PACKET_TOO_BIG) { 259 /* not PACKET TO BIG */ 260 goto out; 261 } 262 /* 263 * ok we need to look closely. We could even get smarter and look at 264 * anyone that we sent to in case we get a different ICMP that tells 265 * us there is no way to reach a host, but for this impl, all we 266 * care about is MTU discovery. 267 */ 268 nxtsz = ntohl(icmp6->icmp6_mtu); 269 /* Stop any PMTU timer */ 270 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, NULL, SCTP_FROM_SCTP6_USRREQ + SCTP_LOC_1); 271 272 /* Adjust destination size limit */ 273 if (net->mtu > nxtsz) { 274 net->mtu = nxtsz; 275 } 276 /* now what about the ep? */ 277 if (stcb->asoc.smallest_mtu > nxtsz) { 278 struct sctp_tmit_chunk *chk; 279 280 /* Adjust that too */ 281 stcb->asoc.smallest_mtu = nxtsz; 282 /* now off to subtract IP_DF flag if needed */ 283 284 TAILQ_FOREACH(chk, &stcb->asoc.send_queue, sctp_next) { 285 if ((uint32_t) (chk->send_size + IP_HDR_SIZE) > nxtsz) { 286 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 287 } 288 } 289 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) { 290 if ((uint32_t) (chk->send_size + IP_HDR_SIZE) > nxtsz) { 291 /* 292 * For this guy we also mark for immediate 293 * resend since we sent to big of chunk 294 */ 295 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 296 if (chk->sent != SCTP_DATAGRAM_RESEND) 297 stcb->asoc.sent_queue_retran_cnt++; 298 chk->sent = SCTP_DATAGRAM_RESEND; 299 chk->rec.data.doing_fast_retransmit = 0; 300 301 chk->sent = SCTP_DATAGRAM_RESEND; 302 /* Clear any time so NO RTT is being done */ 303 chk->sent_rcv_time.tv_sec = 0; 304 chk->sent_rcv_time.tv_usec = 0; 305 stcb->asoc.total_flight -= chk->send_size; 306 net->flight_size -= chk->send_size; 307 } 308 } 309 } 310 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, NULL); 311out: 312 if (stcb) { 313 SCTP_TCB_UNLOCK(stcb); 314 } 315} 316 317 318void 319sctp6_ctlinput(int cmd, struct sockaddr *pktdst, void *d) 320{ 321 struct sctphdr sh; 322 struct ip6ctlparam *ip6cp = NULL; 323 uint32_t vrf_id; 324 int cm; 325 326 vrf_id = SCTP_DEFAULT_VRFID; 327 328 if (pktdst->sa_family != AF_INET6 || 329 pktdst->sa_len != sizeof(struct sockaddr_in6)) 330 return; 331 332 if ((unsigned)cmd >= PRC_NCMDS) 333 return; 334 if (PRC_IS_REDIRECT(cmd)) { 335 d = NULL; 336 } else if (inet6ctlerrmap[cmd] == 0) { 337 return; 338 } 339 /* if the parameter is from icmp6, decode it. */ 340 if (d != NULL) { 341 ip6cp = (struct ip6ctlparam *)d; 342 } else { 343 ip6cp = (struct ip6ctlparam *)NULL; 344 } 345 346 if (ip6cp) { 347 /* 348 * XXX: We assume that when IPV6 is non NULL, M and OFF are 349 * valid. 350 */ 351 /* check if we can safely examine src and dst ports */ 352 struct sctp_inpcb *inp = NULL; 353 struct sctp_tcb *stcb = NULL; 354 struct sctp_nets *net = NULL; 355 struct sockaddr_in6 final; 356 357 if (ip6cp->ip6c_m == NULL) 358 return; 359 360 bzero(&sh, sizeof(sh)); 361 bzero(&final, sizeof(final)); 362 inp = NULL; 363 net = NULL; 364 m_copydata(ip6cp->ip6c_m, ip6cp->ip6c_off, sizeof(sh), 365 (caddr_t)&sh); 366 ip6cp->ip6c_src->sin6_port = sh.src_port; 367 final.sin6_len = sizeof(final); 368 final.sin6_family = AF_INET6; 369 final.sin6_addr = ((struct sockaddr_in6 *)pktdst)->sin6_addr; 370 final.sin6_port = sh.dest_port; 371 stcb = sctp_findassociation_addr_sa((struct sockaddr *)ip6cp->ip6c_src, 372 (struct sockaddr *)&final, 373 &inp, &net, 1, vrf_id); 374 /* inp's ref-count increased && stcb locked */ 375 if (stcb != NULL && inp && (inp->sctp_socket != NULL)) { 376 if (cmd == PRC_MSGSIZE) { 377 sctp6_notify_mbuf(inp, 378 ip6cp->ip6c_icmp6, 379 &sh, 380 stcb, 381 net); 382 /* inp's ref-count reduced && stcb unlocked */ 383 } else { 384 if (cmd == PRC_HOSTDEAD) { 385 cm = EHOSTUNREACH; 386 } else { 387 cm = inet6ctlerrmap[cmd]; 388 } 389 sctp_notify(inp, cm, &sh, 390 (struct sockaddr *)&final, 391 stcb, net); 392 /* inp's ref-count reduced && stcb unlocked */ 393 } 394 } else { 395 if (PRC_IS_REDIRECT(cmd) && inp) { 396 in6_rtchange((struct in6pcb *)inp, 397 inet6ctlerrmap[cmd]); 398 } 399 if (inp) { 400 /* reduce inp's ref-count */ 401 SCTP_INP_WLOCK(inp); 402 SCTP_INP_DECR_REF(inp); 403 SCTP_INP_WUNLOCK(inp); 404 } 405 if (stcb) 406 SCTP_TCB_UNLOCK(stcb); 407 } 408 } 409} 410 411/* 412 * this routine can probably be collasped into the one in sctp_userreq.c 413 * since they do the same thing and now we lookup with a sockaddr 414 */ 415static int 416sctp6_getcred(SYSCTL_HANDLER_ARGS) 417{ 418 struct xucred xuc; 419 struct sockaddr_in6 addrs[2]; 420 struct sctp_inpcb *inp; 421 struct sctp_nets *net; 422 struct sctp_tcb *stcb; 423 int error; 424 uint32_t vrf_id; 425 426 vrf_id = SCTP_DEFAULT_VRFID; 427 428 error = priv_check(req->td, PRIV_NETINET_GETCRED); 429 if (error) 430 return (error); 431 432 if (req->newlen != sizeof(addrs)) { 433 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 434 return (EINVAL); 435 } 436 if (req->oldlen != sizeof(struct ucred)) { 437 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 438 return (EINVAL); 439 } 440 error = SYSCTL_IN(req, addrs, sizeof(addrs)); 441 if (error) 442 return (error); 443 444 stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[0]), 445 sin6tosa(&addrs[1]), 446 &inp, &net, 1, vrf_id); 447 if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) { 448 if ((inp != NULL) && (stcb == NULL)) { 449 /* reduce ref-count */ 450 SCTP_INP_WLOCK(inp); 451 SCTP_INP_DECR_REF(inp); 452 goto cred_can_cont; 453 } 454 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 455 error = ENOENT; 456 goto out; 457 } 458 SCTP_TCB_UNLOCK(stcb); 459 /* 460 * We use the write lock here, only since in the error leg we need 461 * it. If we used RLOCK, then we would have to 462 * wlock/decr/unlock/rlock. Which in theory could create a hole. 463 * Better to use higher wlock. 464 */ 465 SCTP_INP_WLOCK(inp); 466cred_can_cont: 467 error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket); 468 if (error) { 469 SCTP_INP_WUNLOCK(inp); 470 goto out; 471 } 472 cru2x(inp->sctp_socket->so_cred, &xuc); 473 SCTP_INP_WUNLOCK(inp); 474 error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred)); 475out: 476 return (error); 477} 478 479SYSCTL_PROC(_net_inet6_sctp6, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW, 480 0, 0, 481 sctp6_getcred, "S,ucred", "Get the ucred of a SCTP6 connection"); 482 483 484/* This is the same as the sctp_abort() could be made common */ 485static void 486sctp6_abort(struct socket *so) 487{ 488 struct sctp_inpcb *inp; 489 uint32_t flags; 490 491 inp = (struct sctp_inpcb *)so->so_pcb; 492 if (inp == 0) 493 return; 494sctp_must_try_again: 495 flags = inp->sctp_flags; 496#ifdef SCTP_LOG_CLOSING 497 sctp_log_closing(inp, NULL, 17); 498#endif 499 if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) && 500 (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) { 501#ifdef SCTP_LOG_CLOSING 502 sctp_log_closing(inp, NULL, 16); 503#endif 504 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 505 SCTP_CALLED_AFTER_CMPSET_OFCLOSE); 506 SOCK_LOCK(so); 507 SCTP_SB_CLEAR(so->so_snd); 508 /* 509 * same for the rcv ones, they are only here for the 510 * accounting/select. 511 */ 512 SCTP_SB_CLEAR(so->so_rcv); 513 /* Now null out the reference, we are completely detached. */ 514 so->so_pcb = NULL; 515 SOCK_UNLOCK(so); 516 } else { 517 flags = inp->sctp_flags; 518 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) { 519 goto sctp_must_try_again; 520 } 521 } 522 return; 523} 524 525static int 526sctp6_attach(struct socket *so, int proto, struct thread *p) 527{ 528 struct in6pcb *inp6; 529 int error; 530 struct sctp_inpcb *inp; 531 uint32_t vrf_id = SCTP_DEFAULT_VRFID; 532 533 inp = (struct sctp_inpcb *)so->so_pcb; 534 if (inp != NULL) { 535 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 536 return EINVAL; 537 } 538 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 539 error = SCTP_SORESERVE(so, sctp_sendspace, sctp_recvspace); 540 if (error) 541 return error; 542 } 543 error = sctp_inpcb_alloc(so, vrf_id); 544 if (error) 545 return error; 546 inp = (struct sctp_inpcb *)so->so_pcb; 547 SCTP_INP_WLOCK(inp); 548 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUND_V6; /* I'm v6! */ 549 inp6 = (struct in6pcb *)inp; 550 551 inp6->inp_vflag |= INP_IPV6; 552 inp6->in6p_hops = -1; /* use kernel default */ 553 inp6->in6p_cksum = -1; /* just to be sure */ 554#ifdef INET 555 /* 556 * XXX: ugly!! IPv4 TTL initialization is necessary for an IPv6 557 * socket as well, because the socket may be bound to an IPv6 558 * wildcard address, which may match an IPv4-mapped IPv6 address. 559 */ 560 inp6->inp_ip_ttl = ip_defttl; 561#endif 562 /* 563 * Hmm what about the IPSEC stuff that is missing here but in 564 * sctp_attach()? 565 */ 566 SCTP_INP_WUNLOCK(inp); 567 return 0; 568} 569 570static int 571sctp6_bind(struct socket *so, struct sockaddr *addr, struct thread *p) 572{ 573 struct sctp_inpcb *inp; 574 struct in6pcb *inp6; 575 int error; 576 577 inp = (struct sctp_inpcb *)so->so_pcb; 578 if (inp == 0) { 579 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 580 return EINVAL; 581 } 582 if (addr) { 583 if ((addr->sa_family == AF_INET6) && 584 (addr->sa_len != sizeof(struct sockaddr_in6))) { 585 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 586 return EINVAL; 587 } 588 if ((addr->sa_family == AF_INET) && 589 (addr->sa_len != sizeof(struct sockaddr_in))) { 590 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 591 return EINVAL; 592 } 593 } 594 inp6 = (struct in6pcb *)inp; 595 inp6->inp_vflag &= ~INP_IPV4; 596 inp6->inp_vflag |= INP_IPV6; 597 if ((addr != NULL) && (SCTP_IPV6_V6ONLY(inp6) == 0)) { 598 if (addr->sa_family == AF_INET) { 599 /* binding v4 addr to v6 socket, so reset flags */ 600 inp6->inp_vflag |= INP_IPV4; 601 inp6->inp_vflag &= ~INP_IPV6; 602 } else { 603 struct sockaddr_in6 *sin6_p; 604 605 sin6_p = (struct sockaddr_in6 *)addr; 606 607 if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr)) { 608 inp6->inp_vflag |= INP_IPV4; 609 } else if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { 610 struct sockaddr_in sin; 611 612 in6_sin6_2_sin(&sin, sin6_p); 613 inp6->inp_vflag |= INP_IPV4; 614 inp6->inp_vflag &= ~INP_IPV6; 615 error = sctp_inpcb_bind(so, (struct sockaddr *)&sin, NULL, p); 616 return error; 617 } 618 } 619 } else if (addr != NULL) { 620 /* IPV6_V6ONLY socket */ 621 if (addr->sa_family == AF_INET) { 622 /* can't bind v4 addr to v6 only socket! */ 623 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 624 return EINVAL; 625 } else { 626 struct sockaddr_in6 *sin6_p; 627 628 sin6_p = (struct sockaddr_in6 *)addr; 629 630 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) 631 /* can't bind v4-mapped addrs either! */ 632 /* NOTE: we don't support SIIT */ 633 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 634 return EINVAL; 635 } 636 } 637 error = sctp_inpcb_bind(so, addr, NULL, p); 638 return error; 639} 640 641 642static void 643sctp6_close(struct socket *so) 644{ 645 sctp_close(so); 646} 647 648/* This could be made common with sctp_detach() since they are identical */ 649 650static 651int 652sctp6_disconnect(struct socket *so) 653{ 654 return (sctp_disconnect(so)); 655} 656 657 658int 659sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, 660 struct mbuf *control, struct thread *p); 661 662 663static int 664sctp6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, 665 struct mbuf *control, struct thread *p) 666{ 667 struct sctp_inpcb *inp; 668 struct inpcb *in_inp; 669 struct in6pcb *inp6; 670 671#ifdef INET 672 struct sockaddr_in6 *sin6; 673 674#endif /* INET */ 675 /* No SPL needed since sctp_output does this */ 676 677 inp = (struct sctp_inpcb *)so->so_pcb; 678 if (inp == NULL) { 679 if (control) { 680 SCTP_RELEASE_PKT(control); 681 control = NULL; 682 } 683 SCTP_RELEASE_PKT(m); 684 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 685 return EINVAL; 686 } 687 in_inp = (struct inpcb *)inp; 688 inp6 = (struct in6pcb *)inp; 689 /* 690 * For the TCP model we may get a NULL addr, if we are a connected 691 * socket thats ok. 692 */ 693 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) && 694 (addr == NULL)) { 695 goto connected_type; 696 } 697 if (addr == NULL) { 698 SCTP_RELEASE_PKT(m); 699 if (control) { 700 SCTP_RELEASE_PKT(control); 701 control = NULL; 702 } 703 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EDESTADDRREQ); 704 return (EDESTADDRREQ); 705 } 706#ifdef INET 707 sin6 = (struct sockaddr_in6 *)addr; 708 if (SCTP_IPV6_V6ONLY(inp6)) { 709 /* 710 * if IPV6_V6ONLY flag, we discard datagrams destined to a 711 * v4 addr or v4-mapped addr 712 */ 713 if (addr->sa_family == AF_INET) { 714 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 715 return EINVAL; 716 } 717 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 718 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 719 return EINVAL; 720 } 721 } 722 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 723 if (!ip6_v6only) { 724 struct sockaddr_in sin; 725 726 /* convert v4-mapped into v4 addr and send */ 727 in6_sin6_2_sin(&sin, sin6); 728 return sctp_sendm(so, flags, m, (struct sockaddr *)&sin, 729 control, p); 730 } else { 731 /* mapped addresses aren't enabled */ 732 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 733 return EINVAL; 734 } 735 } 736#endif /* INET */ 737connected_type: 738 /* now what about control */ 739 if (control) { 740 if (inp->control) { 741 SCTP_PRINTF("huh? control set?\n"); 742 SCTP_RELEASE_PKT(inp->control); 743 inp->control = NULL; 744 } 745 inp->control = control; 746 } 747 /* Place the data */ 748 if (inp->pkt) { 749 SCTP_BUF_NEXT(inp->pkt_last) = m; 750 inp->pkt_last = m; 751 } else { 752 inp->pkt_last = inp->pkt = m; 753 } 754 if ( 755 /* FreeBSD and MacOSX uses a flag passed */ 756 ((flags & PRUS_MORETOCOME) == 0) 757 ) { 758 /* 759 * note with the current version this code will only be used 760 * by OpenBSD, NetBSD and FreeBSD have methods for 761 * re-defining sosend() to use sctp_sosend(). One can 762 * optionaly switch back to this code (by changing back the 763 * defininitions but this is not advisable. 764 */ 765 int ret; 766 767 ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags); 768 inp->pkt = NULL; 769 inp->control = NULL; 770 return (ret); 771 } else { 772 return (0); 773 } 774} 775 776static int 777sctp6_connect(struct socket *so, struct sockaddr *addr, struct thread *p) 778{ 779 uint32_t vrf_id; 780 int error = 0; 781 struct sctp_inpcb *inp; 782 struct in6pcb *inp6; 783 struct sctp_tcb *stcb; 784 785#ifdef INET 786 struct sockaddr_in6 *sin6; 787 struct sockaddr_storage ss; 788 789#endif /* INET */ 790 791 inp6 = (struct in6pcb *)so->so_pcb; 792 inp = (struct sctp_inpcb *)so->so_pcb; 793 if (inp == 0) { 794 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 795 return (ECONNRESET); /* I made the same as TCP since we are 796 * not setup? */ 797 } 798 if (addr == NULL) { 799 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 800 return (EINVAL); 801 } 802 if ((addr->sa_family == AF_INET6) && (addr->sa_len != sizeof(struct sockaddr_in6))) { 803 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 804 return (EINVAL); 805 } 806 if ((addr->sa_family == AF_INET) && (addr->sa_len != sizeof(struct sockaddr_in))) { 807 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 808 return (EINVAL); 809 } 810 vrf_id = inp->def_vrf_id; 811 SCTP_ASOC_CREATE_LOCK(inp); 812 SCTP_INP_RLOCK(inp); 813 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 814 SCTP_PCB_FLAGS_UNBOUND) { 815 /* Bind a ephemeral port */ 816 SCTP_INP_RUNLOCK(inp); 817 error = sctp6_bind(so, NULL, p); 818 if (error) { 819 SCTP_ASOC_CREATE_UNLOCK(inp); 820 821 return (error); 822 } 823 SCTP_INP_RLOCK(inp); 824 } 825 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && 826 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) { 827 /* We are already connected AND the TCP model */ 828 SCTP_INP_RUNLOCK(inp); 829 SCTP_ASOC_CREATE_UNLOCK(inp); 830 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EADDRINUSE); 831 return (EADDRINUSE); 832 } 833#ifdef INET 834 sin6 = (struct sockaddr_in6 *)addr; 835 if (SCTP_IPV6_V6ONLY(inp6)) { 836 /* 837 * if IPV6_V6ONLY flag, ignore connections destined to a v4 838 * addr or v4-mapped addr 839 */ 840 if (addr->sa_family == AF_INET) { 841 SCTP_INP_RUNLOCK(inp); 842 SCTP_ASOC_CREATE_UNLOCK(inp); 843 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 844 return EINVAL; 845 } 846 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 847 SCTP_INP_RUNLOCK(inp); 848 SCTP_ASOC_CREATE_UNLOCK(inp); 849 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 850 return EINVAL; 851 } 852 } 853 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 854 if (!ip6_v6only) { 855 /* convert v4-mapped into v4 addr */ 856 in6_sin6_2_sin((struct sockaddr_in *)&ss, sin6); 857 addr = (struct sockaddr *)&ss; 858 } else { 859 /* mapped addresses aren't enabled */ 860 SCTP_INP_RUNLOCK(inp); 861 SCTP_ASOC_CREATE_UNLOCK(inp); 862 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 863 return EINVAL; 864 } 865 } else 866#endif /* INET */ 867 addr = addr; /* for true v6 address case */ 868 869 /* Now do we connect? */ 870 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 871 stcb = LIST_FIRST(&inp->sctp_asoc_list); 872 if (stcb) { 873 SCTP_TCB_UNLOCK(stcb); 874 } 875 SCTP_INP_RUNLOCK(inp); 876 } else { 877 SCTP_INP_RUNLOCK(inp); 878 SCTP_INP_WLOCK(inp); 879 SCTP_INP_INCR_REF(inp); 880 SCTP_INP_WUNLOCK(inp); 881 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL); 882 if (stcb == NULL) { 883 SCTP_INP_WLOCK(inp); 884 SCTP_INP_DECR_REF(inp); 885 SCTP_INP_WUNLOCK(inp); 886 } 887 } 888 889 if (stcb != NULL) { 890 /* Already have or am bring up an association */ 891 SCTP_ASOC_CREATE_UNLOCK(inp); 892 SCTP_TCB_UNLOCK(stcb); 893 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EALREADY); 894 return (EALREADY); 895 } 896 /* We are GOOD to go */ 897 stcb = sctp_aloc_assoc(inp, addr, 1, &error, 0, vrf_id, p); 898 SCTP_ASOC_CREATE_UNLOCK(inp); 899 if (stcb == NULL) { 900 /* Gak! no memory */ 901 return (error); 902 } 903 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { 904 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; 905 /* Set the connected flag so we can queue data */ 906 soisconnecting(so); 907 } 908 stcb->asoc.state = SCTP_STATE_COOKIE_WAIT; 909 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); 910 911 /* initialize authentication parameters for the assoc */ 912 sctp_initialize_auth_params(inp, stcb); 913 914 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED); 915 SCTP_TCB_UNLOCK(stcb); 916 return error; 917} 918 919static int 920sctp6_getaddr(struct socket *so, struct sockaddr **addr) 921{ 922 struct sockaddr_in6 *sin6; 923 struct sctp_inpcb *inp; 924 uint32_t vrf_id; 925 struct sctp_ifa *sctp_ifa; 926 927 int error; 928 929 /* 930 * Do the malloc first in case it blocks. 931 */ 932 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 933 sin6->sin6_family = AF_INET6; 934 sin6->sin6_len = sizeof(*sin6); 935 936 inp = (struct sctp_inpcb *)so->so_pcb; 937 if (inp == NULL) { 938 SCTP_FREE_SONAME(sin6); 939 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 940 return ECONNRESET; 941 } 942 SCTP_INP_RLOCK(inp); 943 sin6->sin6_port = inp->sctp_lport; 944 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 945 /* For the bound all case you get back 0 */ 946 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 947 struct sctp_tcb *stcb; 948 struct sockaddr_in6 *sin_a6; 949 struct sctp_nets *net; 950 int fnd; 951 952 stcb = LIST_FIRST(&inp->sctp_asoc_list); 953 if (stcb == NULL) { 954 goto notConn6; 955 } 956 fnd = 0; 957 sin_a6 = NULL; 958 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 959 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr; 960 if (sin_a6 == NULL) 961 /* this will make coverity happy */ 962 continue; 963 964 if (sin_a6->sin6_family == AF_INET6) { 965 fnd = 1; 966 break; 967 } 968 } 969 if ((!fnd) || (sin_a6 == NULL)) { 970 /* punt */ 971 goto notConn6; 972 } 973 vrf_id = inp->def_vrf_id; 974 sctp_ifa = sctp_source_address_selection(inp, stcb, (sctp_route_t *) & net->ro, net, 0, vrf_id); 975 if (sctp_ifa) { 976 sin6->sin6_addr = sctp_ifa->address.sin6.sin6_addr; 977 } 978 } else { 979 /* For the bound all case you get back 0 */ 980 notConn6: 981 memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr)); 982 } 983 } else { 984 /* Take the first IPv6 address in the list */ 985 struct sctp_laddr *laddr; 986 int fnd = 0; 987 988 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { 989 if (laddr->ifa->address.sa.sa_family == AF_INET6) { 990 struct sockaddr_in6 *sin_a; 991 992 sin_a = (struct sockaddr_in6 *)&laddr->ifa->address.sin6; 993 sin6->sin6_addr = sin_a->sin6_addr; 994 fnd = 1; 995 break; 996 } 997 } 998 if (!fnd) { 999 SCTP_FREE_SONAME(sin6); 1000 SCTP_INP_RUNLOCK(inp); 1001 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 1002 return ENOENT; 1003 } 1004 } 1005 SCTP_INP_RUNLOCK(inp); 1006 /* Scoping things for v6 */ 1007 if ((error = sa6_recoverscope(sin6)) != 0) { 1008 SCTP_FREE_SONAME(sin6); 1009 return (error); 1010 } 1011 (*addr) = (struct sockaddr *)sin6; 1012 return (0); 1013} 1014 1015static int 1016sctp6_peeraddr(struct socket *so, struct sockaddr **addr) 1017{ 1018 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)*addr; 1019 int fnd; 1020 struct sockaddr_in6 *sin_a6; 1021 struct sctp_inpcb *inp; 1022 struct sctp_tcb *stcb; 1023 struct sctp_nets *net; 1024 1025 int error; 1026 1027 /* 1028 * Do the malloc first in case it blocks. 1029 */ 1030 inp = (struct sctp_inpcb *)so->so_pcb; 1031 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) { 1032 /* UDP type and listeners will drop out here */ 1033 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOTCONN); 1034 return (ENOTCONN); 1035 } 1036 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 1037 sin6->sin6_family = AF_INET6; 1038 sin6->sin6_len = sizeof(*sin6); 1039 1040 /* We must recapture incase we blocked */ 1041 inp = (struct sctp_inpcb *)so->so_pcb; 1042 if (inp == NULL) { 1043 SCTP_FREE_SONAME(sin6); 1044 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 1045 return ECONNRESET; 1046 } 1047 SCTP_INP_RLOCK(inp); 1048 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1049 if (stcb) { 1050 SCTP_TCB_LOCK(stcb); 1051 } 1052 SCTP_INP_RUNLOCK(inp); 1053 if (stcb == NULL) { 1054 SCTP_FREE_SONAME(sin6); 1055 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 1056 return ECONNRESET; 1057 } 1058 fnd = 0; 1059 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1060 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr; 1061 if (sin_a6->sin6_family == AF_INET6) { 1062 fnd = 1; 1063 sin6->sin6_port = stcb->rport; 1064 sin6->sin6_addr = sin_a6->sin6_addr; 1065 break; 1066 } 1067 } 1068 SCTP_TCB_UNLOCK(stcb); 1069 if (!fnd) { 1070 /* No IPv4 address */ 1071 SCTP_FREE_SONAME(sin6); 1072 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 1073 return ENOENT; 1074 } 1075 if ((error = sa6_recoverscope(sin6)) != 0) 1076 return (error); 1077 *addr = (struct sockaddr *)sin6; 1078 return (0); 1079} 1080 1081static int 1082sctp6_in6getaddr(struct socket *so, struct sockaddr **nam) 1083{ 1084 struct sockaddr *addr; 1085 struct in6pcb *inp6 = sotoin6pcb(so); 1086 int error; 1087 1088 if (inp6 == NULL) { 1089 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1090 return EINVAL; 1091 } 1092 /* allow v6 addresses precedence */ 1093 error = sctp6_getaddr(so, nam); 1094 if (error) { 1095 /* try v4 next if v6 failed */ 1096 error = sctp_ingetaddr(so, nam); 1097 if (error) { 1098 return (error); 1099 } 1100 addr = *nam; 1101 /* if I'm V6ONLY, convert it to v4-mapped */ 1102 if (SCTP_IPV6_V6ONLY(inp6)) { 1103 struct sockaddr_in6 sin6; 1104 1105 in6_sin_2_v4mapsin6((struct sockaddr_in *)addr, &sin6); 1106 memcpy(addr, &sin6, sizeof(struct sockaddr_in6)); 1107 1108 } 1109 } 1110 return (error); 1111} 1112 1113 1114static int 1115sctp6_getpeeraddr(struct socket *so, struct sockaddr **nam) 1116{ 1117 struct sockaddr *addr = *nam; 1118 struct in6pcb *inp6 = sotoin6pcb(so); 1119 int error; 1120 1121 if (inp6 == NULL) { 1122 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1123 return EINVAL; 1124 } 1125 /* allow v6 addresses precedence */ 1126 error = sctp6_peeraddr(so, nam); 1127 if (error) { 1128 /* try v4 next if v6 failed */ 1129 error = sctp_peeraddr(so, nam); 1130 if (error) { 1131 return (error); 1132 } 1133 /* if I'm V6ONLY, convert it to v4-mapped */ 1134 if (SCTP_IPV6_V6ONLY(inp6)) { 1135 struct sockaddr_in6 sin6; 1136 1137 in6_sin_2_v4mapsin6((struct sockaddr_in *)addr, &sin6); 1138 memcpy(addr, &sin6, sizeof(struct sockaddr_in6)); 1139 } 1140 } 1141 return error; 1142} 1143 1144struct pr_usrreqs sctp6_usrreqs = { 1145 .pru_abort = sctp6_abort, 1146 .pru_accept = sctp_accept, 1147 .pru_attach = sctp6_attach, 1148 .pru_bind = sctp6_bind, 1149 .pru_connect = sctp6_connect, 1150 .pru_control = in6_control, 1151 .pru_close = sctp6_close, 1152 .pru_detach = sctp6_close, 1153 .pru_sopoll = sopoll_generic, 1154 .pru_disconnect = sctp6_disconnect, 1155 .pru_listen = sctp_listen, 1156 .pru_peeraddr = sctp6_getpeeraddr, 1157 .pru_send = sctp6_send, 1158 .pru_shutdown = sctp_shutdown, 1159 .pru_sockaddr = sctp6_in6getaddr, 1160 .pru_sosend = sctp_sosend, 1161 .pru_soreceive = sctp_soreceive 1162}; 1163