sctp_usrreq.c revision 169655
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 31/* $KAME: sctp_usrreq.c,v 1.48 2005/03/07 23:26:08 itojun Exp $ */ 32 33#include <sys/cdefs.h> 34__FBSDID("$FreeBSD: head/sys/netinet/sctp_usrreq.c 169655 2007-05-17 12:16:24Z rrs $"); 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 52 53 54void 55sctp_init(void) 56{ 57 /* Init the SCTP pcb in sctp_pcb.c */ 58 u_long sb_max_adj; 59 60 sctp_pcb_init(); 61 62 if ((nmbclusters / 8) > SCTP_ASOC_MAX_CHUNKS_ON_QUEUE) 63 sctp_max_chunks_on_queue = (nmbclusters / 8); 64 /* 65 * Allow a user to take no more than 1/2 the number of clusters or 66 * the SB_MAX whichever is smaller for the send window. 67 */ 68 sb_max_adj = (u_long)((u_quad_t) (SB_MAX) * MCLBYTES / (MSIZE + MCLBYTES)); 69 sctp_sendspace = min((min(SB_MAX, sb_max_adj)), 70 ((nmbclusters / 2) * SCTP_DEFAULT_MAXSEGMENT)); 71 /* 72 * Now for the recv window, should we take the same amount? or 73 * should I do 1/2 the SB_MAX instead in the SB_MAX min above. For 74 * now I will just copy. 75 */ 76 sctp_recvspace = sctp_sendspace; 77 78 79} 80 81 82 83/* 84 * cleanup of the sctppcbinfo structure. 85 * Assumes that the sctppcbinfo lock is held. 86 */ 87void 88sctp_pcbinfo_cleanup(void) 89{ 90 /* free the hash tables */ 91 if (sctppcbinfo.sctp_asochash != NULL) 92 SCTP_HASH_FREE(sctppcbinfo.sctp_asochash, sctppcbinfo.hashasocmark); 93 if (sctppcbinfo.sctp_ephash != NULL) 94 SCTP_HASH_FREE(sctppcbinfo.sctp_ephash, sctppcbinfo.hashmark); 95 if (sctppcbinfo.sctp_tcpephash != NULL) 96 SCTP_HASH_FREE(sctppcbinfo.sctp_tcpephash, sctppcbinfo.hashtcpmark); 97 if (sctppcbinfo.sctp_restarthash != NULL) 98 SCTP_HASH_FREE(sctppcbinfo.sctp_restarthash, sctppcbinfo.hashrestartmark); 99} 100 101 102static void 103sctp_pathmtu_adjustment(struct sctp_inpcb *inp, 104 struct sctp_tcb *stcb, 105 struct sctp_nets *net, 106 uint16_t nxtsz) 107{ 108 struct sctp_tmit_chunk *chk; 109 110 /* Adjust that too */ 111 stcb->asoc.smallest_mtu = nxtsz; 112 /* now off to subtract IP_DF flag if needed */ 113#ifdef SCTP_PRINT_FOR_B_AND_M 114 SCTP_PRINTF("sctp_pathmtu_adjust called inp:%p stcb:%p net:%p nxtsz:%d\n", 115 inp, stcb, net, nxtsz); 116#endif 117 TAILQ_FOREACH(chk, &stcb->asoc.send_queue, sctp_next) { 118 if ((chk->send_size + IP_HDR_SIZE) > nxtsz) { 119 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 120 } 121 } 122 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) { 123 if ((chk->send_size + IP_HDR_SIZE) > nxtsz) { 124 /* 125 * For this guy we also mark for immediate resend 126 * since we sent to big of chunk 127 */ 128 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 129 if (chk->sent != SCTP_DATAGRAM_RESEND) { 130 sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt); 131 } 132 chk->sent = SCTP_DATAGRAM_RESEND; 133 chk->rec.data.doing_fast_retransmit = 0; 134#ifdef SCTP_FLIGHT_LOGGING 135 sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_PMTU, 136 chk->whoTo->flight_size, 137 chk->book_size, 138 (uintptr_t) chk->whoTo, 139 chk->rec.data.TSN_seq); 140#endif 141 /* Clear any time so NO RTT is being done */ 142 chk->do_rtt = 0; 143 sctp_flight_size_decrease(chk); 144 sctp_total_flight_decrease(stcb, chk); 145 } 146 } 147} 148 149static void 150sctp_notify_mbuf(struct sctp_inpcb *inp, 151 struct sctp_tcb *stcb, 152 struct sctp_nets *net, 153 struct ip *ip, 154 struct sctphdr *sh) 155{ 156 struct icmp *icmph; 157 int totsz, tmr_stopped = 0; 158 uint16_t nxtsz; 159 160 /* protection */ 161 if ((inp == NULL) || (stcb == NULL) || (net == NULL) || 162 (ip == NULL) || (sh == NULL)) { 163 if (stcb != NULL) { 164 SCTP_TCB_UNLOCK(stcb); 165 } 166 return; 167 } 168 /* First job is to verify the vtag matches what I would send */ 169 if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) { 170 SCTP_TCB_UNLOCK(stcb); 171 return; 172 } 173 icmph = (struct icmp *)((caddr_t)ip - (sizeof(struct icmp) - 174 sizeof(struct ip))); 175 if (icmph->icmp_type != ICMP_UNREACH) { 176 /* We only care about unreachable */ 177 SCTP_TCB_UNLOCK(stcb); 178 return; 179 } 180 if (icmph->icmp_code != ICMP_UNREACH_NEEDFRAG) { 181 /* not a unreachable message due to frag. */ 182 SCTP_TCB_UNLOCK(stcb); 183 return; 184 } 185 totsz = ip->ip_len; 186 187 nxtsz = ntohs(icmph->icmp_seq); 188 if (nxtsz == 0) { 189 /* 190 * old type router that does not tell us what the next size 191 * mtu is. Rats we will have to guess (in a educated fashion 192 * of course) 193 */ 194 nxtsz = find_next_best_mtu(totsz); 195 } 196 /* Stop any PMTU timer */ 197 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) { 198 tmr_stopped = 1; 199 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net, 200 SCTP_FROM_SCTP_USRREQ + SCTP_LOC_1); 201 } 202 /* Adjust destination size limit */ 203 if (net->mtu > nxtsz) { 204 net->mtu = nxtsz; 205 } 206 /* now what about the ep? */ 207 if (stcb->asoc.smallest_mtu > nxtsz) { 208#ifdef SCTP_PRINT_FOR_B_AND_M 209 SCTP_PRINTF("notify_mbuf (ICMP) calls sctp_pathmtu_adjust mtu:%d\n", 210 nxtsz); 211#endif 212 sctp_pathmtu_adjustment(inp, stcb, net, nxtsz); 213 } 214 if (tmr_stopped) 215 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net); 216 217 SCTP_TCB_UNLOCK(stcb); 218} 219 220 221void 222sctp_notify(struct sctp_inpcb *inp, 223 int error, 224 struct sctphdr *sh, 225 struct sockaddr *to, 226 struct sctp_tcb *stcb, 227 struct sctp_nets *net) 228{ 229 /* protection */ 230 if ((inp == NULL) || (stcb == NULL) || (net == NULL) || 231 (sh == NULL) || (to == NULL)) { 232 return; 233 } 234 /* First job is to verify the vtag matches what I would send */ 235 if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) { 236 return; 237 } 238 /* FIX ME FIX ME PROTOPT i.e. no SCTP should ALWAYS be an ABORT */ 239 240 if ((error == EHOSTUNREACH) || /* Host is not reachable */ 241 (error == EHOSTDOWN) || /* Host is down */ 242 (error == ECONNREFUSED) || /* Host refused the connection, (not 243 * an abort?) */ 244 (error == ENOPROTOOPT) /* SCTP is not present on host */ 245 ) { 246 /* 247 * Hmm reachablity problems we must examine closely. If its 248 * not reachable, we may have lost a network. Or if there is 249 * NO protocol at the other end named SCTP. well we consider 250 * it a OOTB abort. 251 */ 252 if ((error == EHOSTUNREACH) || (error == EHOSTDOWN)) { 253 if (net->dest_state & SCTP_ADDR_REACHABLE) { 254 /* Ok that destination is NOT reachable */ 255 SCTP_PRINTF("ICMP (thresh %d/%d) takes interface %p down\n", 256 net->error_count, 257 net->failure_threshold, 258 net); 259 260 net->dest_state &= ~SCTP_ADDR_REACHABLE; 261 net->dest_state |= SCTP_ADDR_NOT_REACHABLE; 262 net->error_count = net->failure_threshold + 1; 263 sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN, 264 stcb, SCTP_FAILED_THRESHOLD, 265 (void *)net); 266 } 267 if (stcb) { 268 SCTP_TCB_UNLOCK(stcb); 269 } 270 } else { 271 /* 272 * Here the peer is either playing tricks on us, 273 * including an address that belongs to someone who 274 * does not support SCTP OR was a userland 275 * implementation that shutdown and now is dead. In 276 * either case treat it like a OOTB abort with no 277 * TCB 278 */ 279 sctp_abort_notification(stcb, SCTP_PEER_FAULTY); 280 sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_2); 281 /* no need to unlock here, since the TCB is gone */ 282 } 283 } else { 284 /* Send all others to the app */ 285 if (stcb) { 286 SCTP_TCB_UNLOCK(stcb); 287 } 288 if (inp->sctp_socket) { 289#ifdef SCTP_LOCK_LOGGING 290 sctp_log_lock(inp, stcb, SCTP_LOG_LOCK_SOCK); 291#endif 292 SOCK_LOCK(inp->sctp_socket); 293 inp->sctp_socket->so_error = error; 294 sctp_sowwakeup(inp, inp->sctp_socket); 295 SOCK_UNLOCK(inp->sctp_socket); 296 } 297 } 298} 299 300void 301sctp_ctlinput(cmd, sa, vip) 302 int cmd; 303 struct sockaddr *sa; 304 void *vip; 305{ 306 struct ip *ip = vip; 307 struct sctphdr *sh; 308 uint32_t vrf_id; 309 310 /* FIX, for non-bsd is this right? */ 311 vrf_id = SCTP_DEFAULT_VRFID; 312 if (sa->sa_family != AF_INET || 313 ((struct sockaddr_in *)sa)->sin_addr.s_addr == INADDR_ANY) { 314 return; 315 } 316 if (PRC_IS_REDIRECT(cmd)) { 317 ip = 0; 318 } else if ((unsigned)cmd >= PRC_NCMDS || inetctlerrmap[cmd] == 0) { 319 return; 320 } 321 if (ip) { 322 struct sctp_inpcb *inp = NULL; 323 struct sctp_tcb *stcb = NULL; 324 struct sctp_nets *net = NULL; 325 struct sockaddr_in to, from; 326 327 sh = (struct sctphdr *)((caddr_t)ip + (ip->ip_hl << 2)); 328 bzero(&to, sizeof(to)); 329 bzero(&from, sizeof(from)); 330 from.sin_family = to.sin_family = AF_INET; 331 from.sin_len = to.sin_len = sizeof(to); 332 from.sin_port = sh->src_port; 333 from.sin_addr = ip->ip_src; 334 to.sin_port = sh->dest_port; 335 to.sin_addr = ip->ip_dst; 336 337 /* 338 * 'to' holds the dest of the packet that failed to be sent. 339 * 'from' holds our local endpoint address. Thus we reverse 340 * the to and the from in the lookup. 341 */ 342 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&from, 343 (struct sockaddr *)&to, 344 &inp, &net, 1, vrf_id); 345 if (stcb != NULL && inp && (inp->sctp_socket != NULL)) { 346 if (cmd != PRC_MSGSIZE) { 347 int cm; 348 349 if (cmd == PRC_HOSTDEAD) { 350 cm = EHOSTUNREACH; 351 } else { 352 cm = inetctlerrmap[cmd]; 353 } 354 sctp_notify(inp, cm, sh, 355 (struct sockaddr *)&to, stcb, 356 net); 357 } else { 358 /* handle possible ICMP size messages */ 359 sctp_notify_mbuf(inp, stcb, net, ip, sh); 360 } 361 } else { 362 if ((stcb == NULL) && (inp != NULL)) { 363 /* reduce ref-count */ 364 SCTP_INP_WLOCK(inp); 365 SCTP_INP_DECR_REF(inp); 366 SCTP_INP_WUNLOCK(inp); 367 } 368 } 369 } 370 return; 371} 372 373static int 374sctp_getcred(SYSCTL_HANDLER_ARGS) 375{ 376 struct xucred xuc; 377 struct sockaddr_in addrs[2]; 378 struct sctp_inpcb *inp; 379 struct sctp_nets *net; 380 struct sctp_tcb *stcb; 381 int error; 382 uint32_t vrf_id; 383 384 385 /* FIX, for non-bsd is this right? */ 386 vrf_id = SCTP_DEFAULT_VRFID; 387 388 /* 389 * XXXRW: Other instances of getcred use SUSER_ALLOWJAIL, as socket 390 * visibility is scoped using cr_canseesocket(), which it is not 391 * here. 392 */ 393 error = priv_check_cred(req->td->td_ucred, PRIV_NETINET_GETCRED, 394 SUSER_ALLOWJAIL); 395 if (error) 396 return (error); 397 398 error = SYSCTL_IN(req, addrs, sizeof(addrs)); 399 if (error) 400 return (error); 401 402 stcb = sctp_findassociation_addr_sa(sintosa(&addrs[0]), 403 sintosa(&addrs[1]), 404 &inp, &net, 1, vrf_id); 405 if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) { 406 if ((inp != NULL) && (stcb == NULL)) { 407 /* reduce ref-count */ 408 SCTP_INP_WLOCK(inp); 409 SCTP_INP_DECR_REF(inp); 410 goto cred_can_cont; 411 } 412 error = ENOENT; 413 goto out; 414 } 415 SCTP_TCB_UNLOCK(stcb); 416 /* 417 * We use the write lock here, only since in the error leg we need 418 * it. If we used RLOCK, then we would have to 419 * wlock/decr/unlock/rlock. Which in theory could create a hole. 420 * Better to use higher wlock. 421 */ 422 SCTP_INP_WLOCK(inp); 423cred_can_cont: 424 error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket); 425 if (error) { 426 SCTP_INP_WUNLOCK(inp); 427 goto out; 428 } 429 cru2x(inp->sctp_socket->so_cred, &xuc); 430 SCTP_INP_WUNLOCK(inp); 431 error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred)); 432out: 433 return (error); 434} 435 436SYSCTL_PROC(_net_inet_sctp, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW, 437 0, 0, sctp_getcred, "S,ucred", "Get the ucred of a SCTP connection"); 438 439 440static void 441sctp_abort(struct socket *so) 442{ 443 struct sctp_inpcb *inp; 444 uint32_t flags; 445 446 inp = (struct sctp_inpcb *)so->so_pcb; 447 if (inp == 0) 448 return; 449 450sctp_must_try_again: 451 flags = inp->sctp_flags; 452#ifdef SCTP_LOG_CLOSING 453 sctp_log_closing(inp, NULL, 17); 454#endif 455 if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) && 456 (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) { 457#ifdef SCTP_LOG_CLOSING 458 sctp_log_closing(inp, NULL, 16); 459#endif 460 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 461 SCTP_CALLED_AFTER_CMPSET_OFCLOSE); 462 SOCK_LOCK(so); 463 SCTP_SB_CLEAR(so->so_snd); 464 /* 465 * same for the rcv ones, they are only here for the 466 * accounting/select. 467 */ 468 SCTP_SB_CLEAR(so->so_rcv); 469 470 /* Now null out the reference, we are completely detached. */ 471 so->so_pcb = NULL; 472 SOCK_UNLOCK(so); 473 } else { 474 flags = inp->sctp_flags; 475 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) { 476 goto sctp_must_try_again; 477 } 478 } 479 return; 480} 481 482static int 483sctp_attach(struct socket *so, int proto, struct thread *p) 484{ 485 struct sctp_inpcb *inp; 486 struct inpcb *ip_inp; 487 int error; 488 489#ifdef IPSEC 490 uint32_t flags; 491 492#endif 493 inp = (struct sctp_inpcb *)so->so_pcb; 494 if (inp != 0) { 495 return EINVAL; 496 } 497 error = SCTP_SORESERVE(so, sctp_sendspace, sctp_recvspace); 498 if (error) { 499 return error; 500 } 501 error = sctp_inpcb_alloc(so); 502 if (error) { 503 return error; 504 } 505 inp = (struct sctp_inpcb *)so->so_pcb; 506 SCTP_INP_WLOCK(inp); 507 508 inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUND_V6; /* I'm not v6! */ 509 ip_inp = &inp->ip_inp.inp; 510 ip_inp->inp_vflag |= INP_IPV4; 511 ip_inp->inp_ip_ttl = ip_defttl; 512 513#ifdef IPSEC 514 error = ipsec_init_pcbpolicy(so, &ip_inp->inp_sp); 515#ifdef SCTP_LOG_CLOSING 516 sctp_log_closing(inp, NULL, 17); 517#endif 518 if (error != 0) { 519 flags = inp->sctp_flags; 520 if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) && 521 (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) { 522#ifdef SCTP_LOG_CLOSING 523 sctp_log_closing(inp, NULL, 15); 524#endif 525 SCTP_INP_WUNLOCK(inp); 526 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 527 SCTP_CALLED_AFTER_CMPSET_OFCLOSE); 528 } else { 529 SCTP_INP_WUNLOCK(inp); 530 } 531 return error; 532 } 533#endif /* IPSEC */ 534 SCTP_INP_WUNLOCK(inp); 535 return 0; 536} 537 538static int 539sctp_bind(struct socket *so, struct sockaddr *addr, struct thread *p) 540{ 541 struct sctp_inpcb *inp; 542 int error; 543 544#ifdef INET6 545 if (addr && addr->sa_family != AF_INET) 546 /* must be a v4 address! */ 547 return EINVAL; 548#endif /* INET6 */ 549 550 inp = (struct sctp_inpcb *)so->so_pcb; 551 if (inp == 0) 552 return EINVAL; 553 554 error = sctp_inpcb_bind(so, addr, p); 555 return error; 556} 557 558static void 559sctp_close(struct socket *so) 560{ 561 struct sctp_inpcb *inp; 562 uint32_t flags; 563 564 inp = (struct sctp_inpcb *)so->so_pcb; 565 if (inp == 0) 566 return; 567 568 /* 569 * Inform all the lower layer assoc that we are done. 570 */ 571sctp_must_try_again: 572 flags = inp->sctp_flags; 573#ifdef SCTP_LOG_CLOSING 574 sctp_log_closing(inp, NULL, 17); 575#endif 576 if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) && 577 (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) { 578 if (((so->so_options & SO_LINGER) && (so->so_linger == 0)) || 579 (so->so_rcv.sb_cc > 0)) { 580#ifdef SCTP_LOG_CLOSING 581 sctp_log_closing(inp, NULL, 13); 582#endif 583 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 584 SCTP_CALLED_AFTER_CMPSET_OFCLOSE); 585 } else { 586#ifdef SCTP_LOG_CLOSING 587 sctp_log_closing(inp, NULL, 14); 588#endif 589 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE, 590 SCTP_CALLED_AFTER_CMPSET_OFCLOSE); 591 } 592 /* 593 * The socket is now detached, no matter what the state of 594 * the SCTP association. 595 */ 596 SOCK_LOCK(so); 597 SCTP_SB_CLEAR(so->so_snd); 598 /* 599 * same for the rcv ones, they are only here for the 600 * accounting/select. 601 */ 602 SCTP_SB_CLEAR(so->so_rcv); 603 604 /* Now null out the reference, we are completely detached. */ 605 so->so_pcb = NULL; 606 SOCK_UNLOCK(so); 607 } else { 608 flags = inp->sctp_flags; 609 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) { 610 goto sctp_must_try_again; 611 } 612 } 613 return; 614} 615 616 617int 618sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, 619 struct mbuf *control, struct thread *p); 620 621 622int 623sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, 624 struct mbuf *control, struct thread *p) 625{ 626 struct sctp_inpcb *inp; 627 int error; 628 629 inp = (struct sctp_inpcb *)so->so_pcb; 630 if (inp == 0) { 631 if (control) { 632 sctp_m_freem(control); 633 control = NULL; 634 } 635 sctp_m_freem(m); 636 return EINVAL; 637 } 638 /* Got to have an to address if we are NOT a connected socket */ 639 if ((addr == NULL) && 640 ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) || 641 (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)) 642 ) { 643 goto connected_type; 644 } else if (addr == NULL) { 645 error = EDESTADDRREQ; 646 sctp_m_freem(m); 647 if (control) { 648 sctp_m_freem(control); 649 control = NULL; 650 } 651 return (error); 652 } 653#ifdef INET6 654 if (addr->sa_family != AF_INET) { 655 /* must be a v4 address! */ 656 sctp_m_freem(m); 657 if (control) { 658 sctp_m_freem(control); 659 control = NULL; 660 } 661 error = EDESTADDRREQ; 662 return EINVAL; 663 } 664#endif /* INET6 */ 665connected_type: 666 /* now what about control */ 667 if (control) { 668 if (inp->control) { 669 SCTP_PRINTF("huh? control set?\n"); 670 sctp_m_freem(inp->control); 671 inp->control = NULL; 672 } 673 inp->control = control; 674 } 675 /* Place the data */ 676 if (inp->pkt) { 677 SCTP_BUF_NEXT(inp->pkt_last) = m; 678 inp->pkt_last = m; 679 } else { 680 inp->pkt_last = inp->pkt = m; 681 } 682 if ( 683 /* FreeBSD uses a flag passed */ 684 ((flags & PRUS_MORETOCOME) == 0) 685 ) { 686 /* 687 * note with the current version this code will only be used 688 * by OpenBSD-- NetBSD, FreeBSD, and MacOS have methods for 689 * re-defining sosend to use the sctp_sosend. One can 690 * optionally switch back to this code (by changing back the 691 * definitions) but this is not advisable. This code is used 692 * by FreeBSD when sending a file with sendfile() though. 693 */ 694 int ret; 695 696 ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags); 697 inp->pkt = NULL; 698 inp->control = NULL; 699 return (ret); 700 } else { 701 return (0); 702 } 703} 704 705static int 706sctp_disconnect(struct socket *so) 707{ 708 struct sctp_inpcb *inp; 709 710 inp = (struct sctp_inpcb *)so->so_pcb; 711 if (inp == NULL) { 712 return (ENOTCONN); 713 } 714 SCTP_INP_RLOCK(inp); 715 if (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { 716 if (SCTP_LIST_EMPTY(&inp->sctp_asoc_list)) { 717 /* No connection */ 718 SCTP_INP_RUNLOCK(inp); 719 return (0); 720 } else { 721 struct sctp_association *asoc; 722 struct sctp_tcb *stcb; 723 724 stcb = LIST_FIRST(&inp->sctp_asoc_list); 725 if (stcb == NULL) { 726 SCTP_INP_RUNLOCK(inp); 727 return (EINVAL); 728 } 729 SCTP_TCB_LOCK(stcb); 730 asoc = &stcb->asoc; 731 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) { 732 /* We are about to be freed, out of here */ 733 SCTP_TCB_UNLOCK(stcb); 734 SCTP_INP_RUNLOCK(inp); 735 return (0); 736 } 737 if (((so->so_options & SO_LINGER) && 738 (so->so_linger == 0)) || 739 (so->so_rcv.sb_cc > 0)) { 740 if (SCTP_GET_STATE(asoc) != 741 SCTP_STATE_COOKIE_WAIT) { 742 /* Left with Data unread */ 743 struct mbuf *err; 744 745 err = sctp_get_mbuf_for_msg(sizeof(struct sctp_paramhdr), 0, M_DONTWAIT, 1, MT_DATA); 746 if (err) { 747 /* 748 * Fill in the user 749 * initiated abort 750 */ 751 struct sctp_paramhdr *ph; 752 753 ph = mtod(err, struct sctp_paramhdr *); 754 SCTP_BUF_LEN(err) = sizeof(struct sctp_paramhdr); 755 ph->param_type = htons(SCTP_CAUSE_USER_INITIATED_ABT); 756 ph->param_length = htons(SCTP_BUF_LEN(err)); 757 } 758 sctp_send_abort_tcb(stcb, err); 759 SCTP_STAT_INCR_COUNTER32(sctps_aborted); 760 } 761 SCTP_INP_RUNLOCK(inp); 762 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) || 763 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { 764 SCTP_STAT_DECR_GAUGE32(sctps_currestab); 765 } 766 sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_3); 767 /* No unlock tcb assoc is gone */ 768 return (0); 769 } 770 if (TAILQ_EMPTY(&asoc->send_queue) && 771 TAILQ_EMPTY(&asoc->sent_queue) && 772 (asoc->stream_queue_cnt == 0)) { 773 /* there is nothing queued to send, so done */ 774 if (asoc->locked_on_sending) { 775 goto abort_anyway; 776 } 777 if ((SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) && 778 (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) { 779 /* only send SHUTDOWN 1st time thru */ 780 sctp_stop_timers_for_shutdown(stcb); 781 sctp_send_shutdown(stcb, 782 stcb->asoc.primary_destination); 783 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3); 784 if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) || 785 (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { 786 SCTP_STAT_DECR_GAUGE32(sctps_currestab); 787 } 788 asoc->state = SCTP_STATE_SHUTDOWN_SENT; 789 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, 790 stcb->sctp_ep, stcb, 791 asoc->primary_destination); 792 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, 793 stcb->sctp_ep, stcb, 794 asoc->primary_destination); 795 } 796 } else { 797 /* 798 * we still got (or just got) data to send, 799 * so set SHUTDOWN_PENDING 800 */ 801 /* 802 * XXX sockets draft says that SCTP_EOF 803 * should be sent with no data. currently, 804 * we will allow user data to be sent first 805 * and move to SHUTDOWN-PENDING 806 */ 807 asoc->state |= SCTP_STATE_SHUTDOWN_PENDING; 808 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb, 809 asoc->primary_destination); 810 if (asoc->locked_on_sending) { 811 /* Locked to send out the data */ 812 struct sctp_stream_queue_pending *sp; 813 814 sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead); 815 if (sp == NULL) { 816 SCTP_PRINTF("Error, sp is NULL, locked on sending is non-null strm:%d\n", 817 asoc->locked_on_sending->stream_no); 818 } else { 819 if ((sp->length == 0) && (sp->msg_is_complete == 0)) 820 asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT; 821 } 822 } 823 if (TAILQ_EMPTY(&asoc->send_queue) && 824 TAILQ_EMPTY(&asoc->sent_queue) && 825 (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) { 826 struct mbuf *op_err; 827 828 abort_anyway: 829 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)), 830 0, M_DONTWAIT, 1, MT_DATA); 831 if (op_err) { 832 /* 833 * Fill in the user 834 * initiated abort 835 */ 836 struct sctp_paramhdr *ph; 837 uint32_t *ippp; 838 839 SCTP_BUF_LEN(op_err) = 840 (sizeof(struct sctp_paramhdr) + sizeof(uint32_t)); 841 ph = mtod(op_err, 842 struct sctp_paramhdr *); 843 ph->param_type = htons( 844 SCTP_CAUSE_USER_INITIATED_ABT); 845 ph->param_length = htons(SCTP_BUF_LEN(op_err)); 846 ippp = (uint32_t *) (ph + 1); 847 *ippp = htonl(SCTP_FROM_SCTP_USRREQ + SCTP_LOC_4); 848 } 849 stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_USRREQ + SCTP_LOC_4; 850 sctp_send_abort_tcb(stcb, op_err); 851 SCTP_STAT_INCR_COUNTER32(sctps_aborted); 852 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) || 853 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { 854 SCTP_STAT_DECR_GAUGE32(sctps_currestab); 855 } 856 SCTP_INP_RUNLOCK(inp); 857 sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_5); 858 return (0); 859 } 860 } 861 SCTP_TCB_UNLOCK(stcb); 862 SCTP_INP_RUNLOCK(inp); 863 return (0); 864 } 865 /* not reached */ 866 } else { 867 /* UDP model does not support this */ 868 SCTP_INP_RUNLOCK(inp); 869 return EOPNOTSUPP; 870 } 871} 872 873int 874sctp_shutdown(struct socket *so) 875{ 876 struct sctp_inpcb *inp; 877 878 inp = (struct sctp_inpcb *)so->so_pcb; 879 if (inp == 0) { 880 return EINVAL; 881 } 882 SCTP_INP_RLOCK(inp); 883 /* For UDP model this is a invalid call */ 884 if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) { 885 /* Restore the flags that the soshutdown took away. */ 886 so->so_rcv.sb_state &= ~SBS_CANTRCVMORE; 887 /* This proc will wakeup for read and do nothing (I hope) */ 888 SCTP_INP_RUNLOCK(inp); 889 return (EOPNOTSUPP); 890 } 891 /* 892 * Ok if we reach here its the TCP model and it is either a SHUT_WR 893 * or SHUT_RDWR. This means we put the shutdown flag against it. 894 */ 895 { 896 struct sctp_tcb *stcb; 897 struct sctp_association *asoc; 898 899 socantsendmore(so); 900 901 stcb = LIST_FIRST(&inp->sctp_asoc_list); 902 if (stcb == NULL) { 903 /* 904 * Ok we hit the case that the shutdown call was 905 * made after an abort or something. Nothing to do 906 * now. 907 */ 908 SCTP_INP_RUNLOCK(inp); 909 return (0); 910 } 911 SCTP_TCB_LOCK(stcb); 912 asoc = &stcb->asoc; 913 if (TAILQ_EMPTY(&asoc->send_queue) && 914 TAILQ_EMPTY(&asoc->sent_queue) && 915 (asoc->stream_queue_cnt == 0)) { 916 if (asoc->locked_on_sending) { 917 goto abort_anyway; 918 } 919 /* there is nothing queued to send, so I'm done... */ 920 if (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) { 921 /* only send SHUTDOWN the first time through */ 922 sctp_stop_timers_for_shutdown(stcb); 923 sctp_send_shutdown(stcb, 924 stcb->asoc.primary_destination); 925 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3); 926 if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) || 927 (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { 928 SCTP_STAT_DECR_GAUGE32(sctps_currestab); 929 } 930 asoc->state = SCTP_STATE_SHUTDOWN_SENT; 931 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, 932 stcb->sctp_ep, stcb, 933 asoc->primary_destination); 934 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, 935 stcb->sctp_ep, stcb, 936 asoc->primary_destination); 937 } 938 } else { 939 /* 940 * we still got (or just got) data to send, so set 941 * SHUTDOWN_PENDING 942 */ 943 asoc->state |= SCTP_STATE_SHUTDOWN_PENDING; 944 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb, 945 asoc->primary_destination); 946 947 if (asoc->locked_on_sending) { 948 /* Locked to send out the data */ 949 struct sctp_stream_queue_pending *sp; 950 951 sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead); 952 if (sp == NULL) { 953 SCTP_PRINTF("Error, sp is NULL, locked on sending is non-null strm:%d\n", 954 asoc->locked_on_sending->stream_no); 955 } else { 956 if ((sp->length == 0) && (sp->msg_is_complete == 0)) { 957 asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT; 958 } 959 } 960 } 961 if (TAILQ_EMPTY(&asoc->send_queue) && 962 TAILQ_EMPTY(&asoc->sent_queue) && 963 (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) { 964 struct mbuf *op_err; 965 966 abort_anyway: 967 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)), 968 0, M_DONTWAIT, 1, MT_DATA); 969 if (op_err) { 970 /* Fill in the user initiated abort */ 971 struct sctp_paramhdr *ph; 972 uint32_t *ippp; 973 974 SCTP_BUF_LEN(op_err) = 975 sizeof(struct sctp_paramhdr) + sizeof(uint32_t); 976 ph = mtod(op_err, 977 struct sctp_paramhdr *); 978 ph->param_type = htons( 979 SCTP_CAUSE_USER_INITIATED_ABT); 980 ph->param_length = htons(SCTP_BUF_LEN(op_err)); 981 ippp = (uint32_t *) (ph + 1); 982 *ippp = htonl(SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6); 983 } 984 stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6; 985 sctp_abort_an_association(stcb->sctp_ep, stcb, 986 SCTP_RESPONSE_TO_USER_REQ, 987 op_err); 988 goto skip_unlock; 989 } 990 } 991 SCTP_TCB_UNLOCK(stcb); 992 } 993skip_unlock: 994 SCTP_INP_RUNLOCK(inp); 995 return 0; 996} 997 998/* 999 * copies a "user" presentable address and removes embedded scope, etc. 1000 * returns 0 on success, 1 on error 1001 */ 1002static uint32_t 1003sctp_fill_user_address(struct sockaddr_storage *ss, struct sockaddr *sa) 1004{ 1005 struct sockaddr_in6 lsa6; 1006 1007 sa = (struct sockaddr *)sctp_recover_scope((struct sockaddr_in6 *)sa, 1008 &lsa6); 1009 memcpy(ss, sa, sa->sa_len); 1010 return (0); 1011} 1012 1013 1014 1015static size_t 1016sctp_fill_up_addresses_vrf(struct sctp_inpcb *inp, 1017 struct sctp_tcb *stcb, 1018 size_t limit, 1019 struct sockaddr_storage *sas, 1020 uint32_t vrf_id) 1021{ 1022 struct sctp_ifn *sctp_ifn; 1023 struct sctp_ifa *sctp_ifa; 1024 int loopback_scope, ipv4_local_scope, local_scope, site_scope; 1025 size_t actual; 1026 int ipv4_addr_legal, ipv6_addr_legal; 1027 struct sctp_vrf *vrf; 1028 1029 actual = 0; 1030 if (limit <= 0) 1031 return (actual); 1032 1033 if (stcb) { 1034 /* Turn on all the appropriate scope */ 1035 loopback_scope = stcb->asoc.loopback_scope; 1036 ipv4_local_scope = stcb->asoc.ipv4_local_scope; 1037 local_scope = stcb->asoc.local_scope; 1038 site_scope = stcb->asoc.site_scope; 1039 } else { 1040 /* Turn on ALL scope, since we look at the EP */ 1041 loopback_scope = ipv4_local_scope = local_scope = 1042 site_scope = 1; 1043 } 1044 ipv4_addr_legal = ipv6_addr_legal = 0; 1045 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { 1046 ipv6_addr_legal = 1; 1047 if (SCTP_IPV6_V6ONLY(inp) == 0) { 1048 ipv4_addr_legal = 1; 1049 } 1050 } else { 1051 ipv4_addr_legal = 1; 1052 } 1053 vrf = sctp_find_vrf(vrf_id); 1054 if (vrf == NULL) { 1055 return (0); 1056 } 1057 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 1058 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) { 1059 if ((loopback_scope == 0) && 1060 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) { 1061 /* Skip loopback if loopback_scope not set */ 1062 continue; 1063 } 1064 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) { 1065 if (stcb) { 1066 /* 1067 * For the BOUND-ALL case, the list 1068 * associated with a TCB is Always 1069 * considered a reverse list.. i.e. 1070 * it lists addresses that are NOT 1071 * part of the association. If this 1072 * is one of those we must skip it. 1073 */ 1074 if (sctp_is_addr_restricted(stcb, 1075 sctp_ifa)) { 1076 continue; 1077 } 1078 } 1079 if ((sctp_ifa->address.sa.sa_family == AF_INET) && 1080 (ipv4_addr_legal)) { 1081 struct sockaddr_in *sin; 1082 1083 sin = (struct sockaddr_in *)&sctp_ifa->address.sa; 1084 if (sin->sin_addr.s_addr == 0) { 1085 /* 1086 * we skip unspecifed 1087 * addresses 1088 */ 1089 continue; 1090 } 1091 if ((ipv4_local_scope == 0) && 1092 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) { 1093 continue; 1094 } 1095 if (inp->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) { 1096 in6_sin_2_v4mapsin6(sin, (struct sockaddr_in6 *)sas); 1097 ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport; 1098 sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(struct sockaddr_in6)); 1099 actual += sizeof(sizeof(struct sockaddr_in6)); 1100 } else { 1101 memcpy(sas, sin, sizeof(*sin)); 1102 ((struct sockaddr_in *)sas)->sin_port = inp->sctp_lport; 1103 sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(*sin)); 1104 actual += sizeof(*sin); 1105 } 1106 if (actual >= limit) { 1107 return (actual); 1108 } 1109 } else if ((sctp_ifa->address.sa.sa_family == AF_INET6) && 1110 (ipv6_addr_legal)) { 1111 struct sockaddr_in6 *sin6; 1112 1113 sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa; 1114 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 1115 /* 1116 * we skip unspecifed 1117 * addresses 1118 */ 1119 continue; 1120 } 1121 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) { 1122 if (local_scope == 0) 1123 continue; 1124 if (sin6->sin6_scope_id == 0) { 1125 if (sa6_recoverscope(sin6) != 0) 1126 /* 1127 * bad link 1128 * local 1129 * address 1130 */ 1131 continue; 1132 } 1133 } 1134 if ((site_scope == 0) && 1135 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) { 1136 continue; 1137 } 1138 memcpy(sas, sin6, sizeof(*sin6)); 1139 ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport; 1140 sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(*sin6)); 1141 actual += sizeof(*sin6); 1142 if (actual >= limit) { 1143 return (actual); 1144 } 1145 } 1146 } 1147 } 1148 } else { 1149 struct sctp_laddr *laddr; 1150 1151 /* The list is a NEGATIVE list */ 1152 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { 1153 if (stcb) { 1154 if (sctp_is_addr_restricted(stcb, laddr->ifa)) { 1155 continue; 1156 } 1157 } 1158 if (sctp_fill_user_address(sas, &laddr->ifa->address.sa)) 1159 continue; 1160 1161 ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport; 1162 sas = (struct sockaddr_storage *)((caddr_t)sas + 1163 laddr->ifa->address.sa.sa_len); 1164 actual += laddr->ifa->address.sa.sa_len; 1165 if (actual >= limit) { 1166 return (actual); 1167 } 1168 } 1169 } 1170 return (actual); 1171} 1172 1173static size_t 1174sctp_fill_up_addresses(struct sctp_inpcb *inp, 1175 struct sctp_tcb *stcb, 1176 size_t limit, 1177 struct sockaddr_storage *sas) 1178{ 1179 size_t size = 0; 1180 1181 /* fill up addresses for the endpoint's default vrf */ 1182 size = sctp_fill_up_addresses_vrf(inp, stcb, limit, sas, 1183 inp->def_vrf_id); 1184 return (size); 1185} 1186 1187static int 1188sctp_count_max_addresses_vrf(struct sctp_inpcb *inp, uint32_t vrf_id) 1189{ 1190 int cnt = 0; 1191 struct sctp_vrf *vrf = NULL; 1192 1193 /* 1194 * In both sub-set bound an bound_all cases we return the MAXIMUM 1195 * number of addresses that you COULD get. In reality the sub-set 1196 * bound may have an exclusion list for a given TCB OR in the 1197 * bound-all case a TCB may NOT include the loopback or other 1198 * addresses as well. 1199 */ 1200 vrf = sctp_find_vrf(vrf_id); 1201 if (vrf == NULL) { 1202 return (0); 1203 } 1204 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 1205 struct sctp_ifn *sctp_ifn; 1206 struct sctp_ifa *sctp_ifa; 1207 1208 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) { 1209 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) { 1210 /* Count them if they are the right type */ 1211 if (sctp_ifa->address.sa.sa_family == AF_INET) { 1212 if (inp->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) 1213 cnt += sizeof(struct sockaddr_in6); 1214 else 1215 cnt += sizeof(struct sockaddr_in); 1216 1217 } else if (sctp_ifa->address.sa.sa_family == AF_INET6) 1218 cnt += sizeof(struct sockaddr_in6); 1219 } 1220 } 1221 } else { 1222 struct sctp_laddr *laddr; 1223 1224 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { 1225 if (laddr->ifa->address.sa.sa_family == AF_INET) { 1226 if (inp->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) 1227 cnt += sizeof(struct sockaddr_in6); 1228 else 1229 cnt += sizeof(struct sockaddr_in); 1230 1231 } else if (laddr->ifa->address.sa.sa_family == AF_INET6) 1232 cnt += sizeof(struct sockaddr_in6); 1233 } 1234 } 1235 return (cnt); 1236} 1237 1238static int 1239sctp_count_max_addresses(struct sctp_inpcb *inp) 1240{ 1241 int cnt = 0; 1242 1243 /* count addresses for the endpoint's default VRF */ 1244 cnt = sctp_count_max_addresses_vrf(inp, inp->def_vrf_id); 1245 return (cnt); 1246} 1247 1248static int 1249sctp_do_connect_x(struct socket *so, struct sctp_inpcb *inp, void *optval, 1250 size_t optsize, void *p, int delay) 1251{ 1252 int error = 0; 1253 int creat_lock_on = 0; 1254 struct sctp_tcb *stcb = NULL; 1255 struct sockaddr *sa; 1256 int num_v6 = 0, num_v4 = 0, *totaddrp, totaddr; 1257 int added = 0; 1258 uint32_t vrf_id; 1259 sctp_assoc_t *a_id; 1260 1261 SCTPDBG(SCTP_DEBUG_PCB1, "Connectx called\n"); 1262 1263 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && 1264 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) { 1265 /* We are already connected AND the TCP model */ 1266 return (EADDRINUSE); 1267 } 1268 if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) { 1269 return (EINVAL); 1270 } 1271 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 1272 SCTP_INP_RLOCK(inp); 1273 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1274 SCTP_INP_RUNLOCK(inp); 1275 } 1276 if (stcb) { 1277 return (EALREADY); 1278 } 1279 SCTP_INP_INCR_REF(inp); 1280 SCTP_ASOC_CREATE_LOCK(inp); 1281 creat_lock_on = 1; 1282 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || 1283 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) { 1284 error = EFAULT; 1285 goto out_now; 1286 } 1287 totaddrp = (int *)optval; 1288 totaddr = *totaddrp; 1289 sa = (struct sockaddr *)(totaddrp + 1); 1290 stcb = sctp_connectx_helper_find(inp, sa, &totaddr, &num_v4, &num_v6, &error, (optsize - sizeof(int))); 1291 if (stcb != NULL) { 1292 /* Already have or am bring up an association */ 1293 SCTP_ASOC_CREATE_UNLOCK(inp); 1294 creat_lock_on = 0; 1295 SCTP_TCB_UNLOCK(stcb); 1296 error = EALREADY; 1297 goto out_now; 1298 } 1299#ifdef INET6 1300 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) && 1301 (num_v6 > 0)) { 1302 error = EINVAL; 1303 goto out_now; 1304 } 1305 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) && 1306 (num_v4 > 0)) { 1307 struct in6pcb *inp6; 1308 1309 inp6 = (struct in6pcb *)inp; 1310 if (SCTP_IPV6_V6ONLY(inp6)) { 1311 /* 1312 * if IPV6_V6ONLY flag, ignore connections destined 1313 * to a v4 addr or v4-mapped addr 1314 */ 1315 error = EINVAL; 1316 goto out_now; 1317 } 1318 } 1319#endif /* INET6 */ 1320 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 1321 SCTP_PCB_FLAGS_UNBOUND) { 1322 /* Bind a ephemeral port */ 1323 error = sctp_inpcb_bind(so, NULL, p); 1324 if (error) { 1325 goto out_now; 1326 } 1327 } 1328 /* FIX ME: do we want to pass in a vrf on the connect call? */ 1329 vrf_id = inp->def_vrf_id; 1330 1331 /* We are GOOD to go */ 1332 stcb = sctp_aloc_assoc(inp, sa, 1, &error, 0, vrf_id); 1333 if (stcb == NULL) { 1334 /* Gak! no memory */ 1335 goto out_now; 1336 } 1337 stcb->asoc.state = SCTP_STATE_COOKIE_WAIT; 1338 /* move to second address */ 1339 if (sa->sa_family == AF_INET) 1340 sa = (struct sockaddr *)((caddr_t)sa + sizeof(struct sockaddr_in)); 1341 else 1342 sa = (struct sockaddr *)((caddr_t)sa + sizeof(struct sockaddr_in6)); 1343 1344 added = sctp_connectx_helper_add(stcb, sa, (totaddr - 1), &error); 1345 /* Fill in the return id */ 1346 a_id = (sctp_assoc_t *) optval; 1347 *a_id = sctp_get_associd(stcb); 1348 1349 /* initialize authentication parameters for the assoc */ 1350 sctp_initialize_auth_params(inp, stcb); 1351 1352 if (delay) { 1353 /* doing delayed connection */ 1354 stcb->asoc.delayed_connection = 1; 1355 sctp_timer_start(SCTP_TIMER_TYPE_INIT, inp, stcb, stcb->asoc.primary_destination); 1356 } else { 1357 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); 1358 sctp_send_initiate(inp, stcb); 1359 } 1360 SCTP_TCB_UNLOCK(stcb); 1361 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { 1362 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; 1363 /* Set the connected flag so we can queue data */ 1364 soisconnecting(so); 1365 } 1366out_now: 1367 if (creat_lock_on) { 1368 SCTP_ASOC_CREATE_UNLOCK(inp); 1369 } 1370 SCTP_INP_DECR_REF(inp); 1371 return error; 1372} 1373 1374#define SCTP_FIND_STCB(inp, stcb, assoc_id) { \ 1375 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||\ 1376 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { \ 1377 SCTP_INP_RLOCK(inp); \ 1378 stcb = LIST_FIRST(&inp->sctp_asoc_list); \ 1379 if (stcb) { \ 1380 SCTP_TCB_LOCK(stcb); \ 1381 } \ 1382 SCTP_INP_RUNLOCK(inp); \ 1383 } else if (assoc_id != 0) { \ 1384 stcb = sctp_findassociation_ep_asocid(inp, assoc_id, 1); \ 1385 if (stcb == NULL) { \ 1386 error = ENOENT; \ 1387 break; \ 1388 } \ 1389 } else { \ 1390 stcb = NULL; \ 1391 } \ 1392 } 1393 1394 1395#define SCTP_CHECK_AND_CAST(destp, srcp, type, size) {\ 1396 if (size < sizeof(type)) { \ 1397 error = EINVAL; \ 1398 break; \ 1399 } else { \ 1400 destp = (type *)srcp; \ 1401 } \ 1402 } 1403 1404static int 1405sctp_getopt(struct socket *so, int optname, void *optval, size_t *optsize, 1406 void *p) 1407{ 1408 struct sctp_inpcb *inp; 1409 int error, val = 0; 1410 struct sctp_tcb *stcb = NULL; 1411 1412 if (optval == NULL) { 1413 return (EINVAL); 1414 } 1415 inp = (struct sctp_inpcb *)so->so_pcb; 1416 if (inp == 0) 1417 return EINVAL; 1418 error = 0; 1419 1420 switch (optname) { 1421 case SCTP_NODELAY: 1422 case SCTP_AUTOCLOSE: 1423 case SCTP_EXPLICIT_EOR: 1424 case SCTP_AUTO_ASCONF: 1425 case SCTP_DISABLE_FRAGMENTS: 1426 case SCTP_I_WANT_MAPPED_V4_ADDR: 1427 case SCTP_USE_EXT_RCVINFO: 1428 SCTP_INP_RLOCK(inp); 1429 switch (optname) { 1430 case SCTP_DISABLE_FRAGMENTS: 1431 val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NO_FRAGMENT); 1432 break; 1433 case SCTP_I_WANT_MAPPED_V4_ADDR: 1434 val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4); 1435 break; 1436 case SCTP_AUTO_ASCONF: 1437 val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF); 1438 break; 1439 case SCTP_EXPLICIT_EOR: 1440 val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR); 1441 break; 1442 case SCTP_NODELAY: 1443 val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NODELAY); 1444 break; 1445 case SCTP_USE_EXT_RCVINFO: 1446 val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO); 1447 break; 1448 case SCTP_AUTOCLOSE: 1449 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTOCLOSE)) 1450 val = TICKS_TO_SEC(inp->sctp_ep.auto_close_time); 1451 else 1452 val = 0; 1453 break; 1454 1455 default: 1456 error = ENOPROTOOPT; 1457 } /* end switch (sopt->sopt_name) */ 1458 if (optname != SCTP_AUTOCLOSE) { 1459 /* make it an "on/off" value */ 1460 val = (val != 0); 1461 } 1462 if (*optsize < sizeof(val)) { 1463 error = EINVAL; 1464 } 1465 SCTP_INP_RUNLOCK(inp); 1466 if (error == 0) { 1467 /* return the option value */ 1468 *(int *)optval = val; 1469 *optsize = sizeof(val); 1470 } 1471 break; 1472 1473 case SCTP_PARTIAL_DELIVERY_POINT: 1474 { 1475 uint32_t *value; 1476 1477 SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize); 1478 *value = inp->partial_delivery_point; 1479 *optsize = sizeof(uint32_t); 1480 } 1481 break; 1482 case SCTP_FRAGMENT_INTERLEAVE: 1483 { 1484 uint32_t *value; 1485 1486 SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize); 1487 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) { 1488 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) { 1489 *value = SCTP_FRAG_LEVEL_2; 1490 } else { 1491 *value = SCTP_FRAG_LEVEL_1; 1492 } 1493 } else { 1494 *value = SCTP_FRAG_LEVEL_0; 1495 } 1496 *optsize = sizeof(uint32_t); 1497 } 1498 break; 1499 case SCTP_CMT_ON_OFF: 1500 { 1501 struct sctp_assoc_value *av; 1502 1503 SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); 1504 if (sctp_cmt_on_off) { 1505 SCTP_FIND_STCB(inp, stcb, av->assoc_id); 1506 if (stcb) { 1507 av->assoc_value = stcb->asoc.sctp_cmt_on_off; 1508 SCTP_TCB_UNLOCK(stcb); 1509 1510 } else { 1511 error = ENOTCONN; 1512 } 1513 } else { 1514 error = ENOPROTOOPT; 1515 } 1516 *optsize = sizeof(*av); 1517 } 1518 break; 1519 case SCTP_GET_ADDR_LEN: 1520 { 1521 struct sctp_assoc_value *av; 1522 1523 SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); 1524 error = EINVAL; 1525#ifdef INET 1526 if (av->assoc_value == AF_INET) { 1527 av->assoc_value = sizeof(struct sockaddr_in); 1528 error = 0; 1529 } 1530#endif 1531#ifdef INET6 1532 if (av->assoc_value == AF_INET6) { 1533 av->assoc_value = sizeof(struct sockaddr_in6); 1534 error = 0; 1535 } 1536#endif 1537 *optsize = sizeof(*av); 1538 } 1539 break; 1540 case SCTP_GET_ASSOC_NUMBER: 1541 { 1542 uint32_t *value, cnt; 1543 1544 SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize); 1545 cnt = 0; 1546 SCTP_INP_RLOCK(inp); 1547 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { 1548 cnt++; 1549 } 1550 SCTP_INP_RUNLOCK(inp); 1551 *value = cnt; 1552 *optsize = sizeof(uint32_t); 1553 } 1554 break; 1555 1556 case SCTP_GET_ASSOC_ID_LIST: 1557 { 1558 struct sctp_assoc_ids *ids; 1559 unsigned int at, limit; 1560 1561 SCTP_CHECK_AND_CAST(ids, optval, struct sctp_assoc_ids, *optsize); 1562 at = 0; 1563 limit = *optsize / sizeof(sctp_assoc_t); 1564 SCTP_INP_RLOCK(inp); 1565 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) { 1566 if (at < limit) { 1567 ids->gaids_assoc_id[at++] = sctp_get_associd(stcb); 1568 } else { 1569 error = EINVAL; 1570 break; 1571 } 1572 } 1573 SCTP_INP_RUNLOCK(inp); 1574 *optsize = at * sizeof(sctp_assoc_t); 1575 } 1576 break; 1577 case SCTP_CONTEXT: 1578 { 1579 struct sctp_assoc_value *av; 1580 1581 SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); 1582 SCTP_FIND_STCB(inp, stcb, av->assoc_id); 1583 1584 if (stcb) { 1585 av->assoc_value = stcb->asoc.context; 1586 SCTP_TCB_UNLOCK(stcb); 1587 } else { 1588 SCTP_INP_RLOCK(inp); 1589 av->assoc_value = inp->sctp_context; 1590 SCTP_INP_RUNLOCK(inp); 1591 } 1592 *optsize = sizeof(*av); 1593 } 1594 break; 1595 case SCTP_VRF_ID: 1596 { 1597 uint32_t *vrf_id; 1598 1599 SCTP_CHECK_AND_CAST(vrf_id, optval, uint32_t, *optsize); 1600 *vrf_id = inp->def_vrf_id; 1601 break; 1602 } 1603 case SCTP_GET_ASOC_VRF: 1604 { 1605 struct sctp_assoc_value *id; 1606 1607 SCTP_CHECK_AND_CAST(id, optval, struct sctp_assoc_value, *optsize); 1608 SCTP_FIND_STCB(inp, stcb, id->assoc_id); 1609 if (stcb == NULL) { 1610 error = EINVAL; 1611 break; 1612 } 1613 id->assoc_value = stcb->asoc.vrf_id; 1614 break; 1615 } 1616 case SCTP_GET_VRF_IDS: 1617 { 1618 error = EOPNOTSUPP; 1619 break; 1620 } 1621 case SCTP_GET_NONCE_VALUES: 1622 { 1623 struct sctp_get_nonce_values *gnv; 1624 1625 SCTP_CHECK_AND_CAST(gnv, optval, struct sctp_get_nonce_values, *optsize); 1626 SCTP_FIND_STCB(inp, stcb, gnv->gn_assoc_id); 1627 1628 if (stcb) { 1629 gnv->gn_peers_tag = stcb->asoc.peer_vtag; 1630 gnv->gn_local_tag = stcb->asoc.my_vtag; 1631 SCTP_TCB_UNLOCK(stcb); 1632 } else { 1633 error = ENOTCONN; 1634 } 1635 *optsize = sizeof(*gnv); 1636 } 1637 break; 1638 case SCTP_DELAYED_ACK_TIME: 1639 { 1640 struct sctp_assoc_value *tm; 1641 1642 SCTP_CHECK_AND_CAST(tm, optval, struct sctp_assoc_value, *optsize); 1643 SCTP_FIND_STCB(inp, stcb, tm->assoc_id); 1644 1645 if (stcb) { 1646 tm->assoc_value = stcb->asoc.delayed_ack; 1647 SCTP_TCB_UNLOCK(stcb); 1648 } else { 1649 SCTP_INP_RLOCK(inp); 1650 tm->assoc_value = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]); 1651 SCTP_INP_RUNLOCK(inp); 1652 } 1653 *optsize = sizeof(*tm); 1654 } 1655 break; 1656 1657 case SCTP_GET_SNDBUF_USE: 1658 { 1659 struct sctp_sockstat *ss; 1660 1661 SCTP_CHECK_AND_CAST(ss, optval, struct sctp_sockstat, *optsize); 1662 SCTP_FIND_STCB(inp, stcb, ss->ss_assoc_id); 1663 1664 if (stcb) { 1665 ss->ss_total_sndbuf = stcb->asoc.total_output_queue_size; 1666 ss->ss_total_recv_buf = (stcb->asoc.size_on_reasm_queue + 1667 stcb->asoc.size_on_all_streams); 1668 SCTP_TCB_UNLOCK(stcb); 1669 } else { 1670 error = ENOTCONN; 1671 } 1672 *optsize = sizeof(struct sctp_sockstat); 1673 } 1674 break; 1675 case SCTP_MAXBURST: 1676 { 1677 uint8_t *value; 1678 1679 SCTP_CHECK_AND_CAST(value, optval, uint8_t, *optsize); 1680 1681 SCTP_INP_RLOCK(inp); 1682 *value = inp->sctp_ep.max_burst; 1683 SCTP_INP_RUNLOCK(inp); 1684 *optsize = sizeof(uint8_t); 1685 } 1686 break; 1687 case SCTP_MAXSEG: 1688 { 1689 struct sctp_assoc_value *av; 1690 int ovh; 1691 1692 SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize); 1693 if (av->assoc_id) { 1694 SCTP_FIND_STCB(inp, stcb, av->assoc_id); 1695 } else { 1696 stcb = NULL; 1697 } 1698 1699 if (stcb) { 1700 av->assoc_value = sctp_get_frag_point(stcb, &stcb->asoc); 1701 SCTP_TCB_UNLOCK(stcb); 1702 } else { 1703 SCTP_INP_RLOCK(inp); 1704 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { 1705 ovh = SCTP_MED_OVERHEAD; 1706 } else { 1707 ovh = SCTP_MED_V4_OVERHEAD; 1708 } 1709 av->assoc_value = inp->sctp_frag_point - ovh; 1710 SCTP_INP_RUNLOCK(inp); 1711 } 1712 *optsize = sizeof(struct sctp_assoc_value); 1713 } 1714 break; 1715 case SCTP_GET_STAT_LOG: 1716#ifdef SCTP_STAT_LOGGING 1717 error = sctp_fill_stat_log(optval, optsize); 1718#else 1719 error = EOPNOTSUPP; 1720#endif 1721 break; 1722 case SCTP_EVENTS: 1723 { 1724 struct sctp_event_subscribe *events; 1725 1726 SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, *optsize); 1727 memset(events, 0, sizeof(*events)); 1728 SCTP_INP_RLOCK(inp); 1729 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT)) 1730 events->sctp_data_io_event = 1; 1731 1732 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT)) 1733 events->sctp_association_event = 1; 1734 1735 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT)) 1736 events->sctp_address_event = 1; 1737 1738 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT)) 1739 events->sctp_send_failure_event = 1; 1740 1741 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR)) 1742 events->sctp_peer_error_event = 1; 1743 1744 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) 1745 events->sctp_shutdown_event = 1; 1746 1747 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT)) 1748 events->sctp_partial_delivery_event = 1; 1749 1750 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) 1751 events->sctp_adaptation_layer_event = 1; 1752 1753 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT)) 1754 events->sctp_authentication_event = 1; 1755 1756 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT)) 1757 events->sctp_stream_reset_events = 1; 1758 SCTP_INP_RUNLOCK(inp); 1759 *optsize = sizeof(struct sctp_event_subscribe); 1760 } 1761 break; 1762 1763 case SCTP_ADAPTATION_LAYER: 1764 { 1765 uint32_t *value; 1766 1767 SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize); 1768 1769 SCTP_INP_RLOCK(inp); 1770 *value = inp->sctp_ep.adaptation_layer_indicator; 1771 SCTP_INP_RUNLOCK(inp); 1772 *optsize = sizeof(uint32_t); 1773 } 1774 break; 1775 case SCTP_SET_INITIAL_DBG_SEQ: 1776 { 1777 uint32_t *value; 1778 1779 SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize); 1780 SCTP_INP_RLOCK(inp); 1781 *value = inp->sctp_ep.initial_sequence_debug; 1782 SCTP_INP_RUNLOCK(inp); 1783 *optsize = sizeof(uint32_t); 1784 } 1785 break; 1786 case SCTP_GET_LOCAL_ADDR_SIZE: 1787 { 1788 uint32_t *value; 1789 1790 SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize); 1791 SCTP_INP_RLOCK(inp); 1792 *value = sctp_count_max_addresses(inp); 1793 SCTP_INP_RUNLOCK(inp); 1794 *optsize = sizeof(uint32_t); 1795 } 1796 break; 1797 case SCTP_GET_REMOTE_ADDR_SIZE: 1798 { 1799 uint32_t *value; 1800 size_t size; 1801 struct sctp_nets *net; 1802 1803 SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize); 1804 /* FIXME MT: change to sctp_assoc_value? */ 1805 SCTP_FIND_STCB(inp, stcb, (sctp_assoc_t) * value); 1806 1807 if (stcb) { 1808 size = 0; 1809 /* Count the sizes */ 1810 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1811 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) || 1812 (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) { 1813 size += sizeof(struct sockaddr_in6); 1814 } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) { 1815 size += sizeof(struct sockaddr_in); 1816 } else { 1817 /* huh */ 1818 break; 1819 } 1820 } 1821 SCTP_TCB_UNLOCK(stcb); 1822 *value = (uint32_t) size; 1823 } else { 1824 error = ENOTCONN; 1825 } 1826 *optsize = sizeof(uint32_t); 1827 } 1828 break; 1829 case SCTP_GET_PEER_ADDRESSES: 1830 /* 1831 * Get the address information, an array is passed in to 1832 * fill up we pack it. 1833 */ 1834 { 1835 size_t cpsz, left; 1836 struct sockaddr_storage *sas; 1837 struct sctp_nets *net; 1838 struct sctp_getaddresses *saddr; 1839 1840 SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize); 1841 SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id); 1842 1843 if (stcb) { 1844 left = (*optsize) - sizeof(struct sctp_getaddresses); 1845 *optsize = sizeof(struct sctp_getaddresses); 1846 sas = (struct sockaddr_storage *)&saddr->addr[0]; 1847 1848 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1849 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) || 1850 (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) { 1851 cpsz = sizeof(struct sockaddr_in6); 1852 } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) { 1853 cpsz = sizeof(struct sockaddr_in); 1854 } else { 1855 /* huh */ 1856 break; 1857 } 1858 if (left < cpsz) { 1859 /* not enough room. */ 1860 break; 1861 } 1862 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) && 1863 (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET)) { 1864 /* Must map the address */ 1865 in6_sin_2_v4mapsin6((struct sockaddr_in *)&net->ro._l_addr, 1866 (struct sockaddr_in6 *)sas); 1867 } else { 1868 memcpy(sas, &net->ro._l_addr, cpsz); 1869 } 1870 ((struct sockaddr_in *)sas)->sin_port = stcb->rport; 1871 1872 sas = (struct sockaddr_storage *)((caddr_t)sas + cpsz); 1873 left -= cpsz; 1874 *optsize += cpsz; 1875 } 1876 SCTP_TCB_UNLOCK(stcb); 1877 } else { 1878 error = ENOENT; 1879 } 1880 } 1881 break; 1882 case SCTP_GET_LOCAL_ADDRESSES: 1883 { 1884 size_t limit, actual; 1885 struct sockaddr_storage *sas; 1886 struct sctp_getaddresses *saddr; 1887 1888 SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize); 1889 SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id); 1890 1891 sas = (struct sockaddr_storage *)&saddr->addr[0]; 1892 limit = *optsize - sizeof(sctp_assoc_t); 1893 actual = sctp_fill_up_addresses(inp, stcb, limit, sas); 1894 if (stcb) { 1895 SCTP_TCB_UNLOCK(stcb); 1896 } 1897 *optsize = sizeof(struct sockaddr_storage) + actual; 1898 } 1899 break; 1900 case SCTP_PEER_ADDR_PARAMS: 1901 { 1902 struct sctp_paddrparams *paddrp; 1903 struct sctp_nets *net; 1904 1905 SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, *optsize); 1906 SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id); 1907 1908 net = NULL; 1909 if (stcb) { 1910 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address); 1911 } else { 1912 /* 1913 * We increment here since 1914 * sctp_findassociation_ep_addr() wil do a 1915 * decrement if it finds the stcb as long as 1916 * the locked tcb (last argument) is NOT a 1917 * TCB.. aka NULL. 1918 */ 1919 SCTP_INP_INCR_REF(inp); 1920 stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddrp->spp_address, &net, NULL, NULL); 1921 if (stcb == NULL) { 1922 SCTP_INP_DECR_REF(inp); 1923 } 1924 } 1925 1926 if (stcb) { 1927 /* Applys to the specific association */ 1928 paddrp->spp_flags = 0; 1929 if (net) { 1930 paddrp->spp_pathmaxrxt = net->failure_threshold; 1931 paddrp->spp_pathmtu = net->mtu; 1932 /* get flags for HB */ 1933 if (net->dest_state & SCTP_ADDR_NOHB) 1934 paddrp->spp_flags |= SPP_HB_DISABLE; 1935 else 1936 paddrp->spp_flags |= SPP_HB_ENABLE; 1937 /* get flags for PMTU */ 1938 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) { 1939 paddrp->spp_flags |= SPP_PMTUD_ENABLE; 1940 } else { 1941 paddrp->spp_flags |= SPP_PMTUD_DISABLE; 1942 } 1943#ifdef INET 1944 if (net->ro._l_addr.sin.sin_family == AF_INET) { 1945 paddrp->spp_ipv4_tos = net->tos_flowlabel & 0x000000fc; 1946 paddrp->spp_flags |= SPP_IPV4_TOS; 1947 } 1948#endif 1949#ifdef INET6 1950 if (net->ro._l_addr.sin6.sin6_family == AF_INET6) { 1951 paddrp->spp_ipv6_flowlabel = net->tos_flowlabel; 1952 paddrp->spp_flags |= SPP_IPV6_FLOWLABEL; 1953 } 1954#endif 1955 } else { 1956 /* 1957 * No destination so return default 1958 * value 1959 */ 1960 paddrp->spp_pathmaxrxt = stcb->asoc.def_net_failure; 1961 paddrp->spp_pathmtu = sctp_get_frag_point(stcb, &stcb->asoc); 1962#ifdef INET 1963 paddrp->spp_ipv4_tos = stcb->asoc.default_tos & 0x000000fc; 1964 paddrp->spp_flags |= SPP_IPV4_TOS; 1965#endif 1966#ifdef INET6 1967 paddrp->spp_ipv6_flowlabel = stcb->asoc.default_flowlabel; 1968 paddrp->spp_flags |= SPP_IPV6_FLOWLABEL; 1969#endif 1970 /* default settings should be these */ 1971 if (sctp_is_hb_timer_running(stcb)) { 1972 paddrp->spp_flags |= SPP_HB_ENABLE; 1973 } 1974 } 1975 paddrp->spp_hbinterval = stcb->asoc.heart_beat_delay; 1976 paddrp->spp_assoc_id = sctp_get_associd(stcb); 1977 SCTP_TCB_UNLOCK(stcb); 1978 } else { 1979 /* Use endpoint defaults */ 1980 SCTP_INP_RLOCK(inp); 1981 paddrp->spp_pathmaxrxt = inp->sctp_ep.def_net_failure; 1982 paddrp->spp_hbinterval = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]); 1983 paddrp->spp_assoc_id = (sctp_assoc_t) 0; 1984 /* get inp's default */ 1985#ifdef INET 1986 paddrp->spp_ipv4_tos = inp->ip_inp.inp.inp_ip_tos; 1987 paddrp->spp_flags |= SPP_IPV4_TOS; 1988#endif 1989#ifdef INET6 1990 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { 1991 paddrp->spp_ipv6_flowlabel = ((struct in6pcb *)inp)->in6p_flowinfo; 1992 paddrp->spp_flags |= SPP_IPV6_FLOWLABEL; 1993 } 1994#endif 1995 /* can't return this */ 1996 paddrp->spp_pathmaxrxt = 0; 1997 paddrp->spp_pathmtu = 0; 1998 /* default behavior, no stcb */ 1999 paddrp->spp_flags = SPP_HB_ENABLE | SPP_PMTUD_ENABLE; 2000 2001 SCTP_INP_RUNLOCK(inp); 2002 } 2003 *optsize = sizeof(struct sctp_paddrparams); 2004 } 2005 break; 2006 case SCTP_GET_PEER_ADDR_INFO: 2007 { 2008 struct sctp_paddrinfo *paddri; 2009 struct sctp_nets *net; 2010 2011 SCTP_CHECK_AND_CAST(paddri, optval, struct sctp_paddrinfo, *optsize); 2012 SCTP_FIND_STCB(inp, stcb, paddri->spinfo_assoc_id); 2013 2014 net = NULL; 2015 if (stcb) { 2016 net = sctp_findnet(stcb, (struct sockaddr *)&paddri->spinfo_address); 2017 } else { 2018 /* 2019 * We increment here since 2020 * sctp_findassociation_ep_addr() wil do a 2021 * decrement if it finds the stcb as long as 2022 * the locked tcb (last argument) is NOT a 2023 * TCB.. aka NULL. 2024 */ 2025 SCTP_INP_INCR_REF(inp); 2026 stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddri->spinfo_address, &net, NULL, NULL); 2027 if (stcb == NULL) { 2028 SCTP_INP_DECR_REF(inp); 2029 } 2030 } 2031 2032 if ((stcb) && (net)) { 2033 paddri->spinfo_state = net->dest_state & (SCTP_REACHABLE_MASK | SCTP_ADDR_NOHB); 2034 paddri->spinfo_cwnd = net->cwnd; 2035 paddri->spinfo_srtt = ((net->lastsa >> 2) + net->lastsv) >> 1; 2036 paddri->spinfo_rto = net->RTO; 2037 paddri->spinfo_assoc_id = sctp_get_associd(stcb); 2038 SCTP_TCB_UNLOCK(stcb); 2039 } else { 2040 if (stcb) { 2041 SCTP_TCB_UNLOCK(stcb); 2042 } 2043 error = ENOENT; 2044 } 2045 *optsize = sizeof(struct sctp_paddrinfo); 2046 } 2047 break; 2048 case SCTP_PCB_STATUS: 2049 { 2050 struct sctp_pcbinfo *spcb; 2051 2052 SCTP_CHECK_AND_CAST(spcb, optval, struct sctp_pcbinfo, *optsize); 2053 sctp_fill_pcbinfo(spcb); 2054 *optsize = sizeof(struct sctp_pcbinfo); 2055 } 2056 break; 2057 2058 case SCTP_STATUS: 2059 { 2060 struct sctp_nets *net; 2061 struct sctp_status *sstat; 2062 2063 SCTP_CHECK_AND_CAST(sstat, optval, struct sctp_status, *optsize); 2064 SCTP_FIND_STCB(inp, stcb, sstat->sstat_assoc_id); 2065 2066 if (stcb == NULL) { 2067 error = EINVAL; 2068 break; 2069 } 2070 /* 2071 * I think passing the state is fine since 2072 * sctp_constants.h will be available to the user 2073 * land. 2074 */ 2075 sstat->sstat_state = stcb->asoc.state; 2076 sstat->sstat_rwnd = stcb->asoc.peers_rwnd; 2077 sstat->sstat_unackdata = stcb->asoc.sent_queue_cnt; 2078 /* 2079 * We can't include chunks that have been passed to 2080 * the socket layer. Only things in queue. 2081 */ 2082 sstat->sstat_penddata = (stcb->asoc.cnt_on_reasm_queue + 2083 stcb->asoc.cnt_on_all_streams); 2084 2085 2086 sstat->sstat_instrms = stcb->asoc.streamincnt; 2087 sstat->sstat_outstrms = stcb->asoc.streamoutcnt; 2088 sstat->sstat_fragmentation_point = sctp_get_frag_point(stcb, &stcb->asoc); 2089 memcpy(&sstat->sstat_primary.spinfo_address, 2090 &stcb->asoc.primary_destination->ro._l_addr, 2091 ((struct sockaddr *)(&stcb->asoc.primary_destination->ro._l_addr))->sa_len); 2092 net = stcb->asoc.primary_destination; 2093 ((struct sockaddr_in *)&sstat->sstat_primary.spinfo_address)->sin_port = stcb->rport; 2094 /* 2095 * Again the user can get info from sctp_constants.h 2096 * for what the state of the network is. 2097 */ 2098 sstat->sstat_primary.spinfo_state = net->dest_state & SCTP_REACHABLE_MASK; 2099 sstat->sstat_primary.spinfo_cwnd = net->cwnd; 2100 sstat->sstat_primary.spinfo_srtt = net->lastsa; 2101 sstat->sstat_primary.spinfo_rto = net->RTO; 2102 sstat->sstat_primary.spinfo_mtu = net->mtu; 2103 sstat->sstat_primary.spinfo_assoc_id = sctp_get_associd(stcb); 2104 SCTP_TCB_UNLOCK(stcb); 2105 *optsize = sizeof(*sstat); 2106 } 2107 break; 2108 case SCTP_RTOINFO: 2109 { 2110 struct sctp_rtoinfo *srto; 2111 2112 SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, *optsize); 2113 SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id); 2114 2115 if (stcb) { 2116 srto->srto_initial = stcb->asoc.initial_rto; 2117 srto->srto_max = stcb->asoc.maxrto; 2118 srto->srto_min = stcb->asoc.minrto; 2119 SCTP_TCB_UNLOCK(stcb); 2120 } else { 2121 SCTP_INP_RLOCK(inp); 2122 srto->srto_initial = inp->sctp_ep.initial_rto; 2123 srto->srto_max = inp->sctp_ep.sctp_maxrto; 2124 srto->srto_min = inp->sctp_ep.sctp_minrto; 2125 SCTP_INP_RUNLOCK(inp); 2126 } 2127 *optsize = sizeof(*srto); 2128 } 2129 break; 2130 case SCTP_ASSOCINFO: 2131 { 2132 struct sctp_assocparams *sasoc; 2133 2134 SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, *optsize); 2135 SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id); 2136 2137 if (stcb) { 2138 sasoc->sasoc_asocmaxrxt = stcb->asoc.max_send_times; 2139 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets; 2140 sasoc->sasoc_peer_rwnd = stcb->asoc.peers_rwnd; 2141 sasoc->sasoc_local_rwnd = stcb->asoc.my_rwnd; 2142 sasoc->sasoc_cookie_life = TICKS_TO_MSEC(stcb->asoc.cookie_life); 2143 sasoc->sasoc_sack_delay = stcb->asoc.delayed_ack; 2144 sasoc->sasoc_sack_freq = stcb->asoc.sack_freq; 2145 SCTP_TCB_UNLOCK(stcb); 2146 } else { 2147 SCTP_INP_RLOCK(inp); 2148 sasoc->sasoc_asocmaxrxt = inp->sctp_ep.max_send_times; 2149 sasoc->sasoc_number_peer_destinations = 0; 2150 sasoc->sasoc_peer_rwnd = 0; 2151 sasoc->sasoc_local_rwnd = sbspace(&inp->sctp_socket->so_rcv); 2152 sasoc->sasoc_cookie_life = TICKS_TO_MSEC(inp->sctp_ep.def_cookie_life); 2153 sasoc->sasoc_sack_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]); 2154 sasoc->sasoc_sack_freq = inp->sctp_ep.sctp_sack_freq; 2155 SCTP_INP_RUNLOCK(inp); 2156 } 2157 *optsize = sizeof(*sasoc); 2158 } 2159 break; 2160 case SCTP_DEFAULT_SEND_PARAM: 2161 { 2162 struct sctp_sndrcvinfo *s_info; 2163 2164 SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, *optsize); 2165 SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id); 2166 2167 if (stcb) { 2168 *s_info = stcb->asoc.def_send; 2169 SCTP_TCB_UNLOCK(stcb); 2170 } else { 2171 SCTP_INP_RLOCK(inp); 2172 *s_info = inp->def_send; 2173 SCTP_INP_RUNLOCK(inp); 2174 } 2175 *optsize = sizeof(*s_info); 2176 } 2177 break; 2178 case SCTP_INITMSG: 2179 { 2180 struct sctp_initmsg *sinit; 2181 2182 SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, *optsize); 2183 SCTP_INP_RLOCK(inp); 2184 sinit->sinit_num_ostreams = inp->sctp_ep.pre_open_stream_count; 2185 sinit->sinit_max_instreams = inp->sctp_ep.max_open_streams_intome; 2186 sinit->sinit_max_attempts = inp->sctp_ep.max_init_times; 2187 sinit->sinit_max_init_timeo = inp->sctp_ep.initial_init_rto_max; 2188 SCTP_INP_RUNLOCK(inp); 2189 *optsize = sizeof(*sinit); 2190 } 2191 break; 2192 case SCTP_PRIMARY_ADDR: 2193 /* we allow a "get" operation on this */ 2194 { 2195 struct sctp_setprim *ssp; 2196 2197 SCTP_CHECK_AND_CAST(ssp, optval, struct sctp_setprim, *optsize); 2198 SCTP_FIND_STCB(inp, stcb, ssp->ssp_assoc_id); 2199 2200 if (stcb) { 2201 /* simply copy out the sockaddr_storage... */ 2202 memcpy(&ssp->ssp_addr, &stcb->asoc.primary_destination->ro._l_addr, 2203 ((struct sockaddr *)&stcb->asoc.primary_destination->ro._l_addr)->sa_len); 2204 SCTP_TCB_UNLOCK(stcb); 2205 } else { 2206 error = EINVAL; 2207 } 2208 *optsize = sizeof(*ssp); 2209 } 2210 break; 2211 2212 case SCTP_HMAC_IDENT: 2213 { 2214 struct sctp_hmacalgo *shmac; 2215 sctp_hmaclist_t *hmaclist; 2216 uint32_t size; 2217 int i; 2218 2219 SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, *optsize); 2220 2221 SCTP_INP_RLOCK(inp); 2222 hmaclist = inp->sctp_ep.local_hmacs; 2223 if (hmaclist == NULL) { 2224 /* no HMACs to return */ 2225 *optsize = sizeof(*shmac); 2226 SCTP_INP_RUNLOCK(inp); 2227 break; 2228 } 2229 /* is there room for all of the hmac ids? */ 2230 size = sizeof(*shmac) + (hmaclist->num_algo * 2231 sizeof(shmac->shmac_idents[0])); 2232 if ((size_t)(*optsize) < size) { 2233 error = EINVAL; 2234 SCTP_INP_RUNLOCK(inp); 2235 break; 2236 } 2237 /* copy in the list */ 2238 for (i = 0; i < hmaclist->num_algo; i++) 2239 shmac->shmac_idents[i] = hmaclist->hmac[i]; 2240 SCTP_INP_RUNLOCK(inp); 2241 *optsize = size; 2242 break; 2243 } 2244 case SCTP_AUTH_ACTIVE_KEY: 2245 { 2246 struct sctp_authkeyid *scact; 2247 2248 SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, *optsize); 2249 SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id); 2250 2251 if (stcb) { 2252 /* get the active key on the assoc */ 2253 scact->scact_keynumber = stcb->asoc.authinfo.assoc_keyid; 2254 SCTP_TCB_UNLOCK(stcb); 2255 } else { 2256 /* get the endpoint active key */ 2257 SCTP_INP_RLOCK(inp); 2258 scact->scact_keynumber = inp->sctp_ep.default_keyid; 2259 SCTP_INP_RUNLOCK(inp); 2260 } 2261 *optsize = sizeof(*scact); 2262 break; 2263 } 2264 case SCTP_LOCAL_AUTH_CHUNKS: 2265 { 2266 struct sctp_authchunks *sac; 2267 sctp_auth_chklist_t *chklist = NULL; 2268 size_t size = 0; 2269 2270 SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize); 2271 SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id); 2272 2273 if (stcb) { 2274 /* get off the assoc */ 2275 chklist = stcb->asoc.local_auth_chunks; 2276 /* is there enough space? */ 2277 size = sctp_auth_get_chklist_size(chklist); 2278 if (*optsize < (sizeof(struct sctp_authchunks) + size)) { 2279 error = EINVAL; 2280 } else { 2281 /* copy in the chunks */ 2282 (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks); 2283 } 2284 SCTP_TCB_UNLOCK(stcb); 2285 } else { 2286 /* get off the endpoint */ 2287 SCTP_INP_RLOCK(inp); 2288 chklist = inp->sctp_ep.local_auth_chunks; 2289 /* is there enough space? */ 2290 size = sctp_auth_get_chklist_size(chklist); 2291 if (*optsize < (sizeof(struct sctp_authchunks) + size)) { 2292 error = EINVAL; 2293 } else { 2294 /* copy in the chunks */ 2295 (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks); 2296 } 2297 SCTP_INP_RUNLOCK(inp); 2298 } 2299 *optsize = sizeof(struct sctp_authchunks) + size; 2300 break; 2301 } 2302 case SCTP_PEER_AUTH_CHUNKS: 2303 { 2304 struct sctp_authchunks *sac; 2305 sctp_auth_chklist_t *chklist = NULL; 2306 size_t size = 0; 2307 2308 SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize); 2309 SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id); 2310 2311 if (stcb) { 2312 /* get off the assoc */ 2313 chklist = stcb->asoc.peer_auth_chunks; 2314 /* is there enough space? */ 2315 size = sctp_auth_get_chklist_size(chklist); 2316 if (*optsize < (sizeof(struct sctp_authchunks) + size)) { 2317 error = EINVAL; 2318 } else { 2319 /* copy in the chunks */ 2320 (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks); 2321 } 2322 SCTP_TCB_UNLOCK(stcb); 2323 } else { 2324 error = ENOENT; 2325 } 2326 *optsize = sizeof(struct sctp_authchunks) + size; 2327 break; 2328 } 2329 2330 2331 default: 2332 error = ENOPROTOOPT; 2333 *optsize = 0; 2334 break; 2335 } /* end switch (sopt->sopt_name) */ 2336 return (error); 2337} 2338 2339static int 2340sctp_setopt(struct socket *so, int optname, void *optval, size_t optsize, 2341 void *p) 2342{ 2343 int error, set_opt; 2344 uint32_t *mopt; 2345 struct sctp_tcb *stcb = NULL; 2346 struct sctp_inpcb *inp; 2347 uint32_t vrf_id; 2348 2349 if (optval == NULL) { 2350 SCTP_PRINTF("optval is NULL\n"); 2351 return (EINVAL); 2352 } 2353 inp = (struct sctp_inpcb *)so->so_pcb; 2354 if (inp == 0) { 2355 SCTP_PRINTF("inp is NULL?\n"); 2356 return EINVAL; 2357 } 2358 vrf_id = inp->def_vrf_id; 2359 2360 error = 0; 2361 switch (optname) { 2362 case SCTP_NODELAY: 2363 case SCTP_AUTOCLOSE: 2364 case SCTP_AUTO_ASCONF: 2365 case SCTP_EXPLICIT_EOR: 2366 case SCTP_DISABLE_FRAGMENTS: 2367 case SCTP_USE_EXT_RCVINFO: 2368 case SCTP_I_WANT_MAPPED_V4_ADDR: 2369 /* copy in the option value */ 2370 SCTP_CHECK_AND_CAST(mopt, optval, uint32_t, optsize); 2371 set_opt = 0; 2372 if (error) 2373 break; 2374 switch (optname) { 2375 case SCTP_DISABLE_FRAGMENTS: 2376 set_opt = SCTP_PCB_FLAGS_NO_FRAGMENT; 2377 break; 2378 case SCTP_AUTO_ASCONF: 2379 set_opt = SCTP_PCB_FLAGS_AUTO_ASCONF; 2380 break; 2381 case SCTP_EXPLICIT_EOR: 2382 set_opt = SCTP_PCB_FLAGS_EXPLICIT_EOR; 2383 break; 2384 case SCTP_USE_EXT_RCVINFO: 2385 set_opt = SCTP_PCB_FLAGS_EXT_RCVINFO; 2386 break; 2387 case SCTP_I_WANT_MAPPED_V4_ADDR: 2388 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { 2389 set_opt = SCTP_PCB_FLAGS_NEEDS_MAPPED_V4; 2390 } else { 2391 return (EINVAL); 2392 } 2393 break; 2394 case SCTP_NODELAY: 2395 set_opt = SCTP_PCB_FLAGS_NODELAY; 2396 break; 2397 case SCTP_AUTOCLOSE: 2398 set_opt = SCTP_PCB_FLAGS_AUTOCLOSE; 2399 /* 2400 * The value is in ticks. Note this does not effect 2401 * old associations, only new ones. 2402 */ 2403 inp->sctp_ep.auto_close_time = SEC_TO_TICKS(*mopt); 2404 break; 2405 } 2406 SCTP_INP_WLOCK(inp); 2407 if (*mopt != 0) { 2408 sctp_feature_on(inp, set_opt); 2409 } else { 2410 sctp_feature_off(inp, set_opt); 2411 } 2412 SCTP_INP_WUNLOCK(inp); 2413 break; 2414 case SCTP_PARTIAL_DELIVERY_POINT: 2415 { 2416 uint32_t *value; 2417 2418 SCTP_CHECK_AND_CAST(value, optval, uint32_t, optsize); 2419 if (*value > SCTP_SB_LIMIT_RCV(so)) { 2420 error = EINVAL; 2421 break; 2422 } 2423 inp->partial_delivery_point = *value; 2424 } 2425 break; 2426 case SCTP_FRAGMENT_INTERLEAVE: 2427 /* not yet until we re-write sctp_recvmsg() */ 2428 { 2429 uint32_t *level; 2430 2431 SCTP_CHECK_AND_CAST(level, optval, uint32_t, optsize); 2432 if (*level == SCTP_FRAG_LEVEL_2) { 2433 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE); 2434 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS); 2435 } else if (*level == SCTP_FRAG_LEVEL_1) { 2436 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE); 2437 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS); 2438 } else if (*level == SCTP_FRAG_LEVEL_0) { 2439 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE); 2440 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS); 2441 2442 } else { 2443 error = EINVAL; 2444 } 2445 } 2446 break; 2447 case SCTP_CMT_ON_OFF: 2448 { 2449 struct sctp_assoc_value *av; 2450 2451 SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize); 2452 if (sctp_cmt_on_off) { 2453 SCTP_FIND_STCB(inp, stcb, av->assoc_id); 2454 if (stcb) { 2455 stcb->asoc.sctp_cmt_on_off = (uint8_t) av->assoc_value; 2456 SCTP_TCB_UNLOCK(stcb); 2457 } else { 2458 error = ENOTCONN; 2459 } 2460 } else { 2461 error = ENOPROTOOPT; 2462 } 2463 } 2464 break; 2465 case SCTP_CLR_STAT_LOG: 2466#ifdef SCTP_STAT_LOGGING 2467 sctp_clr_stat_log(); 2468#else 2469 error = EOPNOTSUPP; 2470#endif 2471 break; 2472 case SCTP_CONTEXT: 2473 { 2474 struct sctp_assoc_value *av; 2475 2476 SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize); 2477 SCTP_FIND_STCB(inp, stcb, av->assoc_id); 2478 2479 if (stcb) { 2480 stcb->asoc.context = av->assoc_value; 2481 SCTP_TCB_UNLOCK(stcb); 2482 } else { 2483 SCTP_INP_WLOCK(inp); 2484 inp->sctp_context = av->assoc_value; 2485 SCTP_INP_WUNLOCK(inp); 2486 } 2487 } 2488 break; 2489 case SCTP_VRF_ID: 2490 { 2491 uint32_t *vrf_id; 2492 2493 SCTP_CHECK_AND_CAST(vrf_id, optval, uint32_t, optsize); 2494 if (*vrf_id > SCTP_MAX_VRF_ID) { 2495 error = EINVAL; 2496 break; 2497 } 2498 inp->def_vrf_id = *vrf_id; 2499 break; 2500 } 2501 case SCTP_DEL_VRF_ID: 2502 { 2503 error = EOPNOTSUPP; 2504 break; 2505 } 2506 case SCTP_ADD_VRF_ID: 2507 { 2508 error = EOPNOTSUPP; 2509 break; 2510 } 2511 2512 case SCTP_DELAYED_ACK_TIME: 2513 { 2514 struct sctp_assoc_value *tm; 2515 2516 SCTP_CHECK_AND_CAST(tm, optval, struct sctp_assoc_value, optsize); 2517 SCTP_FIND_STCB(inp, stcb, tm->assoc_id); 2518 2519 if (stcb) { 2520 stcb->asoc.delayed_ack = tm->assoc_value; 2521 SCTP_TCB_UNLOCK(stcb); 2522 } else { 2523 SCTP_INP_WLOCK(inp); 2524 inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(tm->assoc_value); 2525 SCTP_INP_WUNLOCK(inp); 2526 } 2527 break; 2528 } 2529 case SCTP_AUTH_CHUNK: 2530 { 2531 struct sctp_authchunk *sauth; 2532 2533 SCTP_CHECK_AND_CAST(sauth, optval, struct sctp_authchunk, optsize); 2534 2535 SCTP_INP_WLOCK(inp); 2536 if (sctp_auth_add_chunk(sauth->sauth_chunk, inp->sctp_ep.local_auth_chunks)) 2537 error = EINVAL; 2538 SCTP_INP_WUNLOCK(inp); 2539 break; 2540 } 2541 case SCTP_AUTH_KEY: 2542 { 2543 struct sctp_authkey *sca; 2544 struct sctp_keyhead *shared_keys; 2545 sctp_sharedkey_t *shared_key; 2546 sctp_key_t *key = NULL; 2547 size_t size; 2548 2549 SCTP_CHECK_AND_CAST(sca, optval, struct sctp_authkey, optsize); 2550 SCTP_FIND_STCB(inp, stcb, sca->sca_assoc_id); 2551 size = optsize - sizeof(*sca); 2552 2553 if (stcb) { 2554 /* set it on the assoc */ 2555 shared_keys = &stcb->asoc.shared_keys; 2556 /* clear the cached keys for this key id */ 2557 sctp_clear_cachedkeys(stcb, sca->sca_keynumber); 2558 /* 2559 * create the new shared key and 2560 * insert/replace it 2561 */ 2562 if (size > 0) { 2563 key = sctp_set_key(sca->sca_key, (uint32_t) size); 2564 if (key == NULL) { 2565 error = ENOMEM; 2566 SCTP_TCB_UNLOCK(stcb); 2567 break; 2568 } 2569 } 2570 shared_key = sctp_alloc_sharedkey(); 2571 if (shared_key == NULL) { 2572 sctp_free_key(key); 2573 error = ENOMEM; 2574 SCTP_TCB_UNLOCK(stcb); 2575 break; 2576 } 2577 shared_key->key = key; 2578 shared_key->keyid = sca->sca_keynumber; 2579 sctp_insert_sharedkey(shared_keys, shared_key); 2580 SCTP_TCB_UNLOCK(stcb); 2581 } else { 2582 /* set it on the endpoint */ 2583 SCTP_INP_WLOCK(inp); 2584 shared_keys = &inp->sctp_ep.shared_keys; 2585 /* 2586 * clear the cached keys on all assocs for 2587 * this key id 2588 */ 2589 sctp_clear_cachedkeys_ep(inp, sca->sca_keynumber); 2590 /* 2591 * create the new shared key and 2592 * insert/replace it 2593 */ 2594 if (size > 0) { 2595 key = sctp_set_key(sca->sca_key, (uint32_t) size); 2596 if (key == NULL) { 2597 error = ENOMEM; 2598 SCTP_INP_WUNLOCK(inp); 2599 break; 2600 } 2601 } 2602 shared_key = sctp_alloc_sharedkey(); 2603 if (shared_key == NULL) { 2604 sctp_free_key(key); 2605 error = ENOMEM; 2606 SCTP_INP_WUNLOCK(inp); 2607 break; 2608 } 2609 shared_key->key = key; 2610 shared_key->keyid = sca->sca_keynumber; 2611 sctp_insert_sharedkey(shared_keys, shared_key); 2612 SCTP_INP_WUNLOCK(inp); 2613 } 2614 break; 2615 } 2616 case SCTP_HMAC_IDENT: 2617 { 2618 struct sctp_hmacalgo *shmac; 2619 sctp_hmaclist_t *hmaclist; 2620 uint32_t hmacid; 2621 size_t size, i; 2622 2623 SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, optsize); 2624 size = (optsize - sizeof(*shmac)) / sizeof(shmac->shmac_idents[0]); 2625 hmaclist = sctp_alloc_hmaclist(size); 2626 if (hmaclist == NULL) { 2627 error = ENOMEM; 2628 break; 2629 } 2630 for (i = 0; i < size; i++) { 2631 hmacid = shmac->shmac_idents[i]; 2632 if (sctp_auth_add_hmacid(hmaclist, (uint16_t) hmacid)) { 2633 /* invalid HMACs were found */ ; 2634 error = EINVAL; 2635 sctp_free_hmaclist(hmaclist); 2636 goto sctp_set_hmac_done; 2637 } 2638 } 2639 /* set it on the endpoint */ 2640 SCTP_INP_WLOCK(inp); 2641 if (inp->sctp_ep.local_hmacs) 2642 sctp_free_hmaclist(inp->sctp_ep.local_hmacs); 2643 inp->sctp_ep.local_hmacs = hmaclist; 2644 SCTP_INP_WUNLOCK(inp); 2645 sctp_set_hmac_done: 2646 break; 2647 } 2648 case SCTP_AUTH_ACTIVE_KEY: 2649 { 2650 struct sctp_authkeyid *scact; 2651 2652 SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, optsize); 2653 SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id); 2654 2655 /* set the active key on the right place */ 2656 if (stcb) { 2657 /* set the active key on the assoc */ 2658 if (sctp_auth_setactivekey(stcb, scact->scact_keynumber)) 2659 error = EINVAL; 2660 SCTP_TCB_UNLOCK(stcb); 2661 } else { 2662 /* set the active key on the endpoint */ 2663 SCTP_INP_WLOCK(inp); 2664 if (sctp_auth_setactivekey_ep(inp, scact->scact_keynumber)) 2665 error = EINVAL; 2666 SCTP_INP_WUNLOCK(inp); 2667 } 2668 break; 2669 } 2670 case SCTP_AUTH_DELETE_KEY: 2671 { 2672 struct sctp_authkeyid *scdel; 2673 2674 SCTP_CHECK_AND_CAST(scdel, optval, struct sctp_authkeyid, optsize); 2675 SCTP_FIND_STCB(inp, stcb, scdel->scact_assoc_id); 2676 2677 /* delete the key from the right place */ 2678 if (stcb) { 2679 if (sctp_delete_sharedkey(stcb, scdel->scact_keynumber)) 2680 error = EINVAL; 2681 SCTP_TCB_UNLOCK(stcb); 2682 } else { 2683 SCTP_INP_WLOCK(inp); 2684 if (sctp_delete_sharedkey_ep(inp, scdel->scact_keynumber)) 2685 error = EINVAL; 2686 SCTP_INP_WUNLOCK(inp); 2687 } 2688 break; 2689 } 2690 2691 case SCTP_RESET_STREAMS: 2692 { 2693 struct sctp_stream_reset *strrst; 2694 uint8_t send_in = 0, send_tsn = 0, send_out = 0; 2695 int i; 2696 2697 SCTP_CHECK_AND_CAST(strrst, optval, struct sctp_stream_reset, optsize); 2698 SCTP_FIND_STCB(inp, stcb, strrst->strrst_assoc_id); 2699 2700 if (stcb == NULL) { 2701 error = ENOENT; 2702 break; 2703 } 2704 if (stcb->asoc.peer_supports_strreset == 0) { 2705 /* 2706 * Peer does not support it, we return 2707 * protocol not supported since this is true 2708 * for this feature and this peer, not the 2709 * socket request in general. 2710 */ 2711 error = EPROTONOSUPPORT; 2712 SCTP_TCB_UNLOCK(stcb); 2713 break; 2714 } 2715 if (stcb->asoc.stream_reset_outstanding) { 2716 error = EALREADY; 2717 SCTP_TCB_UNLOCK(stcb); 2718 break; 2719 } 2720 if (strrst->strrst_flags == SCTP_RESET_LOCAL_RECV) { 2721 send_in = 1; 2722 } else if (strrst->strrst_flags == SCTP_RESET_LOCAL_SEND) { 2723 send_out = 1; 2724 } else if (strrst->strrst_flags == SCTP_RESET_BOTH) { 2725 send_in = 1; 2726 send_out = 1; 2727 } else if (strrst->strrst_flags == SCTP_RESET_TSN) { 2728 send_tsn = 1; 2729 } else { 2730 error = EINVAL; 2731 SCTP_TCB_UNLOCK(stcb); 2732 break; 2733 } 2734 for (i = 0; i < strrst->strrst_num_streams; i++) { 2735 if ((send_in) && 2736 2737 (strrst->strrst_list[i] > stcb->asoc.streamincnt)) { 2738 error = EINVAL; 2739 goto get_out; 2740 } 2741 if ((send_out) && 2742 (strrst->strrst_list[i] > stcb->asoc.streamoutcnt)) { 2743 error = EINVAL; 2744 goto get_out; 2745 } 2746 } 2747 if (error) { 2748 get_out: 2749 SCTP_TCB_UNLOCK(stcb); 2750 break; 2751 } 2752 error = sctp_send_str_reset_req(stcb, strrst->strrst_num_streams, 2753 strrst->strrst_list, 2754 send_out, (stcb->asoc.str_reset_seq_in - 3), 2755 send_in, send_tsn); 2756 2757 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_REQ); 2758 SCTP_TCB_UNLOCK(stcb); 2759 } 2760 break; 2761 2762 case SCTP_CONNECT_X: 2763 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) { 2764 error = EINVAL; 2765 break; 2766 } 2767 error = sctp_do_connect_x(so, inp, optval, optsize, p, 0); 2768 break; 2769 2770 case SCTP_CONNECT_X_DELAYED: 2771 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) { 2772 error = EINVAL; 2773 break; 2774 } 2775 error = sctp_do_connect_x(so, inp, optval, optsize, p, 1); 2776 break; 2777 2778 case SCTP_CONNECT_X_COMPLETE: 2779 { 2780 struct sockaddr *sa; 2781 struct sctp_nets *net; 2782 2783 /* FIXME MT: check correct? */ 2784 SCTP_CHECK_AND_CAST(sa, optval, struct sockaddr, optsize); 2785 2786 /* find tcb */ 2787 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 2788 SCTP_INP_RLOCK(inp); 2789 stcb = LIST_FIRST(&inp->sctp_asoc_list); 2790 if (stcb) { 2791 SCTP_TCB_LOCK(stcb); 2792 net = sctp_findnet(stcb, sa); 2793 } 2794 SCTP_INP_RUNLOCK(inp); 2795 } else { 2796 /* 2797 * We increment here since 2798 * sctp_findassociation_ep_addr() wil do a 2799 * decrement if it finds the stcb as long as 2800 * the locked tcb (last argument) is NOT a 2801 * TCB.. aka NULL. 2802 */ 2803 SCTP_INP_INCR_REF(inp); 2804 stcb = sctp_findassociation_ep_addr(&inp, sa, &net, NULL, NULL); 2805 if (stcb == NULL) { 2806 SCTP_INP_DECR_REF(inp); 2807 } 2808 } 2809 2810 if (stcb == NULL) { 2811 error = ENOENT; 2812 break; 2813 } 2814 if (stcb->asoc.delayed_connection == 1) { 2815 stcb->asoc.delayed_connection = 0; 2816 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); 2817 sctp_timer_stop(SCTP_TIMER_TYPE_INIT, inp, stcb, 2818 stcb->asoc.primary_destination, 2819 SCTP_FROM_SCTP_USRREQ + SCTP_LOC_9); 2820 sctp_send_initiate(inp, stcb); 2821 } else { 2822 /* 2823 * already expired or did not use delayed 2824 * connectx 2825 */ 2826 error = EALREADY; 2827 } 2828 SCTP_TCB_UNLOCK(stcb); 2829 } 2830 break; 2831 case SCTP_MAXBURST: 2832 { 2833 uint8_t *burst; 2834 2835 SCTP_CHECK_AND_CAST(burst, optval, uint8_t, optsize); 2836 2837 SCTP_INP_WLOCK(inp); 2838 if (*burst) { 2839 inp->sctp_ep.max_burst = *burst; 2840 } 2841 SCTP_INP_WUNLOCK(inp); 2842 } 2843 break; 2844 case SCTP_MAXSEG: 2845 { 2846 struct sctp_assoc_value *av; 2847 int ovh; 2848 2849 SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize); 2850 SCTP_FIND_STCB(inp, stcb, av->assoc_id); 2851 2852 if (stcb) { 2853 error = EINVAL; 2854 SCTP_TCB_UNLOCK(stcb); 2855 } else { 2856 SCTP_INP_WLOCK(inp); 2857 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) { 2858 ovh = SCTP_MED_OVERHEAD; 2859 } else { 2860 ovh = SCTP_MED_V4_OVERHEAD; 2861 } 2862 /* 2863 * FIXME MT: I think this is not in tune 2864 * with the API ID 2865 */ 2866 if (av->assoc_value) { 2867 inp->sctp_frag_point = (av->assoc_value + ovh); 2868 } else { 2869 error = EINVAL; 2870 } 2871 SCTP_INP_WUNLOCK(inp); 2872 } 2873 } 2874 break; 2875 case SCTP_EVENTS: 2876 { 2877 struct sctp_event_subscribe *events; 2878 2879 SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, optsize); 2880 2881 SCTP_INP_WLOCK(inp); 2882 if (events->sctp_data_io_event) { 2883 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT); 2884 } else { 2885 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT); 2886 } 2887 2888 if (events->sctp_association_event) { 2889 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT); 2890 } else { 2891 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT); 2892 } 2893 2894 if (events->sctp_address_event) { 2895 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT); 2896 } else { 2897 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPADDREVNT); 2898 } 2899 2900 if (events->sctp_send_failure_event) { 2901 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT); 2902 } else { 2903 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT); 2904 } 2905 2906 if (events->sctp_peer_error_event) { 2907 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR); 2908 } else { 2909 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPEERERR); 2910 } 2911 2912 if (events->sctp_shutdown_event) { 2913 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT); 2914 } else { 2915 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT); 2916 } 2917 2918 if (events->sctp_partial_delivery_event) { 2919 sctp_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT); 2920 } else { 2921 sctp_feature_off(inp, SCTP_PCB_FLAGS_PDAPIEVNT); 2922 } 2923 2924 if (events->sctp_adaptation_layer_event) { 2925 sctp_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT); 2926 } else { 2927 sctp_feature_off(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT); 2928 } 2929 2930 if (events->sctp_authentication_event) { 2931 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT); 2932 } else { 2933 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTHEVNT); 2934 } 2935 2936 if (events->sctp_stream_reset_events) { 2937 sctp_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT); 2938 } else { 2939 sctp_feature_off(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT); 2940 } 2941 SCTP_INP_WUNLOCK(inp); 2942 } 2943 break; 2944 2945 case SCTP_ADAPTATION_LAYER: 2946 { 2947 struct sctp_setadaptation *adap_bits; 2948 2949 SCTP_CHECK_AND_CAST(adap_bits, optval, struct sctp_setadaptation, optsize); 2950 SCTP_INP_WLOCK(inp); 2951 inp->sctp_ep.adaptation_layer_indicator = adap_bits->ssb_adaptation_ind; 2952 SCTP_INP_WUNLOCK(inp); 2953 } 2954 break; 2955#ifdef SCTP_DEBUG 2956 case SCTP_SET_INITIAL_DBG_SEQ: 2957 { 2958 uint32_t *vvv; 2959 2960 SCTP_CHECK_AND_CAST(vvv, optval, uint32_t, optsize); 2961 SCTP_INP_WLOCK(inp); 2962 inp->sctp_ep.initial_sequence_debug = *vvv; 2963 SCTP_INP_WUNLOCK(inp); 2964 } 2965 break; 2966#endif 2967 case SCTP_DEFAULT_SEND_PARAM: 2968 { 2969 struct sctp_sndrcvinfo *s_info; 2970 2971 SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, optsize); 2972 SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id); 2973 2974 if (stcb) { 2975 if (s_info->sinfo_stream <= stcb->asoc.streamoutcnt) { 2976 stcb->asoc.def_send = *s_info; 2977 } else { 2978 error = EINVAL; 2979 } 2980 SCTP_TCB_UNLOCK(stcb); 2981 } else { 2982 SCTP_INP_WLOCK(inp); 2983 inp->def_send = *s_info; 2984 SCTP_INP_WUNLOCK(inp); 2985 } 2986 } 2987 break; 2988 case SCTP_PEER_ADDR_PARAMS: 2989 /* Applys to the specific association */ 2990 { 2991 struct sctp_paddrparams *paddrp; 2992 struct sctp_nets *net; 2993 2994 SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, optsize); 2995 SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id); 2996 net = NULL; 2997 if (stcb) { 2998 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address); 2999 } else { 3000 /* 3001 * We increment here since 3002 * sctp_findassociation_ep_addr() wil do a 3003 * decrement if it finds the stcb as long as 3004 * the locked tcb (last argument) is NOT a 3005 * TCB.. aka NULL. 3006 */ 3007 SCTP_INP_INCR_REF(inp); 3008 stcb = sctp_findassociation_ep_addr(&inp, 3009 (struct sockaddr *)&paddrp->spp_address, 3010 &net, NULL, NULL); 3011 if (stcb == NULL) { 3012 SCTP_INP_DECR_REF(inp); 3013 } 3014 } 3015 3016 3017 if (stcb) { 3018 /************************TCB SPECIFIC SET ******************/ 3019 /* 3020 * do we change the timer for HB, we run 3021 * only one? 3022 */ 3023 if (paddrp->spp_hbinterval) 3024 stcb->asoc.heart_beat_delay = paddrp->spp_hbinterval; 3025 else if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO) 3026 stcb->asoc.heart_beat_delay = 0; 3027 3028 /* network sets ? */ 3029 if (net) { 3030 /************************NET SPECIFIC SET ******************/ 3031 if (paddrp->spp_flags & SPP_HB_DEMAND) { 3032 /* on demand HB */ 3033 (void)sctp_send_hb(stcb, 1, net); 3034 } 3035 if (paddrp->spp_flags & SPP_HB_DISABLE) { 3036 net->dest_state |= SCTP_ADDR_NOHB; 3037 } 3038 if (paddrp->spp_flags & SPP_HB_ENABLE) { 3039 net->dest_state &= ~SCTP_ADDR_NOHB; 3040 } 3041 if (paddrp->spp_flags & SPP_PMTUD_DISABLE) { 3042 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) { 3043 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net, 3044 SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10); 3045 } 3046 if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) { 3047 net->mtu = paddrp->spp_pathmtu; 3048 if (net->mtu < stcb->asoc.smallest_mtu) { 3049#ifdef SCTP_PRINT_FOR_B_AND_M 3050 SCTP_PRINTF("SCTP_PMTU_DISABLE calls sctp_pathmtu_adjustment:%d\n", 3051 net->mtu); 3052#endif 3053 sctp_pathmtu_adjustment(inp, stcb, net, net->mtu); 3054 } 3055 } 3056 } 3057 if (paddrp->spp_flags & SPP_PMTUD_ENABLE) { 3058 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) { 3059 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net); 3060 } 3061 } 3062 if (paddrp->spp_pathmaxrxt) 3063 net->failure_threshold = paddrp->spp_pathmaxrxt; 3064#ifdef INET 3065 if (paddrp->spp_flags & SPP_IPV4_TOS) { 3066 if (net->ro._l_addr.sin.sin_family == AF_INET) { 3067 net->tos_flowlabel = paddrp->spp_ipv4_tos & 0x000000fc; 3068 } 3069 } 3070#endif 3071#ifdef INET6 3072 if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL) { 3073 if (net->ro._l_addr.sin6.sin6_family == AF_INET6) { 3074 net->tos_flowlabel = paddrp->spp_ipv6_flowlabel; 3075 } 3076 } 3077#endif 3078 } else { 3079 /************************ASSOC ONLY -- NO NET SPECIFIC SET ******************/ 3080 if (paddrp->spp_pathmaxrxt) 3081 stcb->asoc.def_net_failure = paddrp->spp_pathmaxrxt; 3082 3083 if (paddrp->spp_flags & SPP_HB_ENABLE) { 3084 /* Turn back on the timer */ 3085 stcb->asoc.hb_is_disabled = 0; 3086 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net); 3087 } 3088 if (paddrp->spp_flags & SPP_HB_DISABLE) { 3089 int cnt_of_unconf = 0; 3090 struct sctp_nets *lnet; 3091 3092 stcb->asoc.hb_is_disabled = 1; 3093 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) { 3094 if (lnet->dest_state & SCTP_ADDR_UNCONFIRMED) { 3095 cnt_of_unconf++; 3096 } 3097 } 3098 /* 3099 * stop the timer ONLY if we 3100 * have no unconfirmed 3101 * addresses 3102 */ 3103 if (cnt_of_unconf == 0) { 3104 sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_11); 3105 } 3106 } 3107 if (paddrp->spp_flags & SPP_HB_ENABLE) { 3108 /* start up the timer. */ 3109 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net); 3110 } 3111#ifdef INET 3112 if (paddrp->spp_flags & SPP_IPV4_TOS) 3113 stcb->asoc.default_tos = paddrp->spp_ipv4_tos & 0x000000fc; 3114#endif 3115#ifdef INET6 3116 if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL) 3117 stcb->asoc.default_flowlabel = paddrp->spp_ipv6_flowlabel; 3118#endif 3119 3120 } 3121 SCTP_TCB_UNLOCK(stcb); 3122 } else { 3123 /************************NO TCB, SET TO default stuff ******************/ 3124 SCTP_INP_WLOCK(inp); 3125 /* 3126 * For the TOS/FLOWLABEL stuff you set it 3127 * with the options on the socket 3128 */ 3129 if (paddrp->spp_pathmaxrxt) { 3130 inp->sctp_ep.def_net_failure = paddrp->spp_pathmaxrxt; 3131 } 3132 if (paddrp->spp_flags & SPP_HB_ENABLE) { 3133 inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(paddrp->spp_hbinterval); 3134 sctp_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT); 3135 } else if (paddrp->spp_flags & SPP_HB_DISABLE) { 3136 sctp_feature_on(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT); 3137 } 3138 SCTP_INP_WUNLOCK(inp); 3139 } 3140 } 3141 break; 3142 case SCTP_RTOINFO: 3143 { 3144 struct sctp_rtoinfo *srto; 3145 uint32_t new_init, new_min, new_max; 3146 3147 SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, optsize); 3148 SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id); 3149 3150 if (stcb) { 3151 if (srto->srto_initial) 3152 new_init = srto->srto_initial; 3153 else 3154 new_init = stcb->asoc.initial_rto; 3155 if (srto->srto_max) 3156 new_max = srto->srto_max; 3157 else 3158 new_max = stcb->asoc.maxrto; 3159 if (srto->srto_min) 3160 new_min = srto->srto_min; 3161 else 3162 new_min = stcb->asoc.minrto; 3163 if ((new_min <= new_init) && (new_init <= new_max)) { 3164 stcb->asoc.initial_rto = new_init; 3165 stcb->asoc.maxrto = new_max; 3166 stcb->asoc.minrto = new_min; 3167 } else { 3168 error = EDOM; 3169 } 3170 SCTP_TCB_UNLOCK(stcb); 3171 } else { 3172 SCTP_INP_WLOCK(inp); 3173 if (srto->srto_initial) 3174 new_init = srto->srto_initial; 3175 else 3176 new_init = inp->sctp_ep.initial_rto; 3177 if (srto->srto_max) 3178 new_max = srto->srto_max; 3179 else 3180 new_max = inp->sctp_ep.sctp_maxrto; 3181 if (srto->srto_min) 3182 new_min = srto->srto_min; 3183 else 3184 new_min = inp->sctp_ep.sctp_minrto; 3185 if ((new_min <= new_init) && (new_init <= new_max)) { 3186 inp->sctp_ep.initial_rto = new_init; 3187 inp->sctp_ep.sctp_maxrto = new_max; 3188 inp->sctp_ep.sctp_minrto = new_min; 3189 } else { 3190 error = EDOM; 3191 } 3192 SCTP_INP_WUNLOCK(inp); 3193 } 3194 } 3195 break; 3196 case SCTP_ASSOCINFO: 3197 { 3198 struct sctp_assocparams *sasoc; 3199 3200 SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, optsize); 3201 SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id); 3202 3203 if (stcb) { 3204 if (sasoc->sasoc_asocmaxrxt) 3205 stcb->asoc.max_send_times = sasoc->sasoc_asocmaxrxt; 3206 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets; 3207 sasoc->sasoc_peer_rwnd = 0; 3208 sasoc->sasoc_local_rwnd = 0; 3209 if (sasoc->sasoc_cookie_life) 3210 stcb->asoc.cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life); 3211 stcb->asoc.delayed_ack = sasoc->sasoc_sack_delay; 3212 if (sasoc->sasoc_sack_freq) { 3213 stcb->asoc.sack_freq = sasoc->sasoc_sack_freq; 3214 } 3215 SCTP_TCB_UNLOCK(stcb); 3216 } else { 3217 SCTP_INP_WLOCK(inp); 3218 if (sasoc->sasoc_asocmaxrxt) 3219 inp->sctp_ep.max_send_times = sasoc->sasoc_asocmaxrxt; 3220 sasoc->sasoc_number_peer_destinations = 0; 3221 sasoc->sasoc_peer_rwnd = 0; 3222 sasoc->sasoc_local_rwnd = 0; 3223 if (sasoc->sasoc_cookie_life) 3224 inp->sctp_ep.def_cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life); 3225 inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(sasoc->sasoc_sack_delay); 3226 if (sasoc->sasoc_sack_freq) { 3227 inp->sctp_ep.sctp_sack_freq = sasoc->sasoc_sack_freq; 3228 } 3229 SCTP_INP_WUNLOCK(inp); 3230 } 3231 } 3232 break; 3233 case SCTP_INITMSG: 3234 { 3235 struct sctp_initmsg *sinit; 3236 3237 SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, optsize); 3238 SCTP_INP_WLOCK(inp); 3239 if (sinit->sinit_num_ostreams) 3240 inp->sctp_ep.pre_open_stream_count = sinit->sinit_num_ostreams; 3241 3242 if (sinit->sinit_max_instreams) 3243 inp->sctp_ep.max_open_streams_intome = sinit->sinit_max_instreams; 3244 3245 if (sinit->sinit_max_attempts) 3246 inp->sctp_ep.max_init_times = sinit->sinit_max_attempts; 3247 3248 if (sinit->sinit_max_init_timeo) 3249 inp->sctp_ep.initial_init_rto_max = sinit->sinit_max_init_timeo; 3250 SCTP_INP_WUNLOCK(inp); 3251 } 3252 break; 3253 case SCTP_PRIMARY_ADDR: 3254 { 3255 struct sctp_setprim *spa; 3256 struct sctp_nets *net, *lnet; 3257 3258 SCTP_CHECK_AND_CAST(spa, optval, struct sctp_setprim, optsize); 3259 SCTP_FIND_STCB(inp, stcb, spa->ssp_assoc_id); 3260 3261 net = NULL; 3262 if (stcb) { 3263 net = sctp_findnet(stcb, (struct sockaddr *)&spa->ssp_addr); 3264 } else { 3265 /* 3266 * We increment here since 3267 * sctp_findassociation_ep_addr() wil do a 3268 * decrement if it finds the stcb as long as 3269 * the locked tcb (last argument) is NOT a 3270 * TCB.. aka NULL. 3271 */ 3272 SCTP_INP_INCR_REF(inp); 3273 stcb = sctp_findassociation_ep_addr(&inp, 3274 (struct sockaddr *)&spa->ssp_addr, 3275 &net, NULL, NULL); 3276 if (stcb == NULL) { 3277 SCTP_INP_DECR_REF(inp); 3278 } 3279 } 3280 3281 if ((stcb) && (net)) { 3282 if ((net != stcb->asoc.primary_destination) && 3283 (!(net->dest_state & SCTP_ADDR_UNCONFIRMED))) { 3284 /* Ok we need to set it */ 3285 lnet = stcb->asoc.primary_destination; 3286 if (sctp_set_primary_addr(stcb, (struct sockaddr *)NULL, net) == 0) { 3287 if (net->dest_state & SCTP_ADDR_SWITCH_PRIMARY) { 3288 net->dest_state |= SCTP_ADDR_DOUBLE_SWITCH; 3289 } 3290 net->dest_state |= SCTP_ADDR_SWITCH_PRIMARY; 3291 } 3292 } 3293 } else { 3294 error = EINVAL; 3295 } 3296 if (stcb) { 3297 SCTP_TCB_UNLOCK(stcb); 3298 } 3299 } 3300 break; 3301 case SCTP_SET_DYNAMIC_PRIMARY: 3302 { 3303 union sctp_sockstore *ss; 3304 3305 error = priv_check_cred(curthread->td_ucred, 3306 PRIV_NETINET_RESERVEDPORT, 3307 SUSER_ALLOWJAIL); 3308 if (error) 3309 break; 3310 3311 SCTP_CHECK_AND_CAST(ss, optval, union sctp_sockstore, optsize); 3312 /* SUPER USER CHECK? */ 3313 error = sctp_dynamic_set_primary(&ss->sa, vrf_id); 3314 } 3315 break; 3316 case SCTP_SET_PEER_PRIMARY_ADDR: 3317 { 3318 struct sctp_setpeerprim *sspp; 3319 3320 SCTP_CHECK_AND_CAST(sspp, optval, struct sctp_setpeerprim, optsize); 3321 SCTP_FIND_STCB(inp, stcb, sspp->sspp_assoc_id); 3322 if (stcb != NULL) { 3323 if (sctp_set_primary_ip_address_sa(stcb, (struct sockaddr *)&sspp->sspp_addr) != 0) { 3324 error = EINVAL; 3325 } 3326 SCTP_TCB_UNLOCK(stcb); 3327 } else { 3328 error = EINVAL; 3329 } 3330 3331 } 3332 break; 3333 case SCTP_BINDX_ADD_ADDR: 3334 { 3335 struct sctp_getaddresses *addrs; 3336 struct sockaddr *addr_touse; 3337 struct sockaddr_in sin; 3338 3339 SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses, optsize); 3340 3341 /* see if we're bound all already! */ 3342 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 3343 error = EINVAL; 3344 break; 3345 } 3346 /* Is the VRF one we have */ 3347 addr_touse = addrs->addr; 3348#if defined(INET6) 3349 if (addrs->addr->sa_family == AF_INET6) { 3350 struct sockaddr_in6 *sin6; 3351 3352 sin6 = (struct sockaddr_in6 *)addr_touse; 3353 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 3354 in6_sin6_2_sin(&sin, sin6); 3355 addr_touse = (struct sockaddr *)&sin; 3356 } 3357 } 3358#endif 3359 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) { 3360 if (p == NULL) { 3361 /* Can't get proc for Net/Open BSD */ 3362 error = EINVAL; 3363 break; 3364 } 3365 error = sctp_inpcb_bind(so, addr_touse, p); 3366 break; 3367 } 3368 /* 3369 * No locks required here since bind and mgmt_ep_sa 3370 * all do their own locking. If we do something for 3371 * the FIX: below we may need to lock in that case. 3372 */ 3373 if (addrs->sget_assoc_id == 0) { 3374 /* add the address */ 3375 struct sctp_inpcb *lep; 3376 3377 ((struct sockaddr_in *)addr_touse)->sin_port = inp->sctp_lport; 3378 lep = sctp_pcb_findep(addr_touse, 1, 0, vrf_id); 3379 if (lep != NULL) { 3380 /* 3381 * We must decrement the refcount 3382 * since we have the ep already and 3383 * are binding. No remove going on 3384 * here. 3385 */ 3386 SCTP_INP_DECR_REF(inp); 3387 } 3388 if (lep == inp) { 3389 /* already bound to it.. ok */ 3390 break; 3391 } else if (lep == NULL) { 3392 ((struct sockaddr_in *)addr_touse)->sin_port = 0; 3393 error = sctp_addr_mgmt_ep_sa(inp, addr_touse, 3394 SCTP_ADD_IP_ADDRESS, vrf_id); 3395 } else { 3396 error = EADDRNOTAVAIL; 3397 } 3398 if (error) 3399 break; 3400 3401 } else { 3402 /* 3403 * FIX: decide whether we allow assoc based 3404 * bindx 3405 */ 3406 } 3407 } 3408 break; 3409 case SCTP_BINDX_REM_ADDR: 3410 { 3411 struct sctp_getaddresses *addrs; 3412 struct sockaddr *addr_touse; 3413 struct sockaddr_in sin; 3414 3415 SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses, optsize); 3416 /* see if we're bound all already! */ 3417 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 3418 error = EINVAL; 3419 break; 3420 } 3421 addr_touse = addrs->addr; 3422#if defined(INET6) 3423 if (addrs->addr->sa_family == AF_INET6) { 3424 struct sockaddr_in6 *sin6; 3425 3426 sin6 = (struct sockaddr_in6 *)addr_touse; 3427 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 3428 in6_sin6_2_sin(&sin, sin6); 3429 addr_touse = (struct sockaddr *)&sin; 3430 } 3431 } 3432#endif 3433 /* 3434 * No lock required mgmt_ep_sa does its own locking. 3435 * If the FIX: below is ever changed we may need to 3436 * lock before calling association level binding. 3437 */ 3438 if (addrs->sget_assoc_id == 0) { 3439 /* delete the address */ 3440 error = sctp_addr_mgmt_ep_sa(inp, addr_touse, 3441 SCTP_DEL_IP_ADDRESS, 3442 vrf_id); 3443 } else { 3444 /* 3445 * FIX: decide whether we allow assoc based 3446 * bindx 3447 */ 3448 } 3449 } 3450 break; 3451 default: 3452 error = ENOPROTOOPT; 3453 break; 3454 } /* end switch (opt) */ 3455 return (error); 3456} 3457 3458 3459int 3460sctp_ctloutput(struct socket *so, struct sockopt *sopt) 3461{ 3462 void *optval = NULL; 3463 size_t optsize = 0; 3464 struct sctp_inpcb *inp; 3465 void *p; 3466 int error = 0; 3467 3468 inp = (struct sctp_inpcb *)so->so_pcb; 3469 if (inp == 0) { 3470 /* I made the same as TCP since we are not setup? */ 3471 return (ECONNRESET); 3472 } 3473 if (sopt->sopt_level != IPPROTO_SCTP) { 3474 /* wrong proto level... send back up to IP */ 3475#ifdef INET6 3476 if (INP_CHECK_SOCKAF(so, AF_INET6)) 3477 error = ip6_ctloutput(so, sopt); 3478 else 3479#endif /* INET6 */ 3480 error = ip_ctloutput(so, sopt); 3481 return (error); 3482 } 3483 optsize = sopt->sopt_valsize; 3484 if (optsize) { 3485 SCTP_MALLOC(optval, void *, optsize, "SCTPSockOpt"); 3486 if (optval == NULL) { 3487 return (ENOBUFS); 3488 } 3489 error = sooptcopyin(sopt, optval, optsize, optsize); 3490 if (error) { 3491 SCTP_FREE(optval); 3492 goto out; 3493 } 3494 } 3495 p = (void *)sopt->sopt_td; 3496 if (sopt->sopt_dir == SOPT_SET) { 3497 error = sctp_setopt(so, sopt->sopt_name, optval, optsize, p); 3498 } else if (sopt->sopt_dir == SOPT_GET) { 3499 error = sctp_getopt(so, sopt->sopt_name, optval, &optsize, p); 3500 } else { 3501 error = EINVAL; 3502 } 3503 if ((error == 0) && (optval != NULL)) { 3504 error = sooptcopyout(sopt, optval, optsize); 3505 SCTP_FREE(optval); 3506 } else if (optval != NULL) { 3507 SCTP_FREE(optval); 3508 } 3509out: 3510 return (error); 3511} 3512 3513 3514static int 3515sctp_connect(struct socket *so, struct sockaddr *addr, struct thread *p) 3516{ 3517 int error = 0; 3518 int create_lock_on = 0; 3519 uint32_t vrf_id; 3520 struct sctp_inpcb *inp; 3521 struct sctp_tcb *stcb = NULL; 3522 3523 inp = (struct sctp_inpcb *)so->so_pcb; 3524 if (inp == 0) { 3525 /* I made the same as TCP since we are not setup? */ 3526 return (ECONNRESET); 3527 } 3528 SCTP_ASOC_CREATE_LOCK(inp); 3529 create_lock_on = 1; 3530 3531 SCTP_INP_INCR_REF(inp); 3532 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) || 3533 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) { 3534 /* Should I really unlock ? */ 3535 error = EFAULT; 3536 goto out_now; 3537 } 3538#ifdef INET6 3539 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) && 3540 (addr->sa_family == AF_INET6)) { 3541 error = EINVAL; 3542 goto out_now; 3543 } 3544#endif /* INET6 */ 3545 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 3546 SCTP_PCB_FLAGS_UNBOUND) { 3547 /* Bind a ephemeral port */ 3548 error = sctp_inpcb_bind(so, NULL, p); 3549 if (error) { 3550 goto out_now; 3551 } 3552 } 3553 /* Now do we connect? */ 3554 if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) { 3555 error = EINVAL; 3556 goto out_now; 3557 } 3558 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && 3559 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) { 3560 /* We are already connected AND the TCP model */ 3561 error = EADDRINUSE; 3562 goto out_now; 3563 } 3564 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 3565 SCTP_INP_RLOCK(inp); 3566 stcb = LIST_FIRST(&inp->sctp_asoc_list); 3567 SCTP_INP_RUNLOCK(inp); 3568 } else { 3569 /* 3570 * We increment here since sctp_findassociation_ep_addr() 3571 * wil do a decrement if it finds the stcb as long as the 3572 * locked tcb (last argument) is NOT a TCB.. aka NULL. 3573 */ 3574 SCTP_INP_INCR_REF(inp); 3575 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL); 3576 if (stcb == NULL) { 3577 SCTP_INP_DECR_REF(inp); 3578 } else { 3579 SCTP_TCB_LOCK(stcb); 3580 } 3581 } 3582 if (stcb != NULL) { 3583 /* Already have or am bring up an association */ 3584 error = EALREADY; 3585 goto out_now; 3586 } 3587 vrf_id = inp->def_vrf_id; 3588 /* We are GOOD to go */ 3589 stcb = sctp_aloc_assoc(inp, addr, 1, &error, 0, vrf_id); 3590 if (stcb == NULL) { 3591 /* Gak! no memory */ 3592 goto out_now; 3593 } 3594 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { 3595 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; 3596 /* Set the connected flag so we can queue data */ 3597 soisconnecting(so); 3598 } 3599 stcb->asoc.state = SCTP_STATE_COOKIE_WAIT; 3600 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); 3601 3602 /* initialize authentication parameters for the assoc */ 3603 sctp_initialize_auth_params(inp, stcb); 3604 3605 sctp_send_initiate(inp, stcb); 3606 SCTP_TCB_UNLOCK(stcb); 3607out_now: 3608 if (create_lock_on) { 3609 SCTP_ASOC_CREATE_UNLOCK(inp); 3610 } 3611 SCTP_INP_DECR_REF(inp); 3612 return error; 3613} 3614 3615int 3616sctp_listen(struct socket *so, int backlog, struct thread *p) 3617{ 3618 /* 3619 * Note this module depends on the protocol processing being called 3620 * AFTER any socket level flags and backlog are applied to the 3621 * socket. The traditional way that the socket flags are applied is 3622 * AFTER protocol processing. We have made a change to the 3623 * sys/kern/uipc_socket.c module to reverse this but this MUST be in 3624 * place if the socket API for SCTP is to work properly. 3625 */ 3626 3627 int error = 0; 3628 struct sctp_inpcb *inp; 3629 3630 inp = (struct sctp_inpcb *)so->so_pcb; 3631 if (inp == 0) { 3632 /* I made the same as TCP since we are not setup? */ 3633 return (ECONNRESET); 3634 } 3635 SCTP_INP_RLOCK(inp); 3636#ifdef SCTP_LOCK_LOGGING 3637 sctp_log_lock(inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_SOCK); 3638#endif 3639 SOCK_LOCK(so); 3640 error = solisten_proto_check(so); 3641 if (error) { 3642 SOCK_UNLOCK(so); 3643 SCTP_INP_RUNLOCK(inp); 3644 return (error); 3645 } 3646 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && 3647 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) { 3648 /* We are already connected AND the TCP model */ 3649 SCTP_INP_RUNLOCK(inp); 3650 SOCK_UNLOCK(so); 3651 return (EADDRINUSE); 3652 } 3653 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) { 3654 /* We must do a bind. */ 3655 SOCK_UNLOCK(so); 3656 SCTP_INP_RUNLOCK(inp); 3657 if ((error = sctp_inpcb_bind(so, NULL, p))) { 3658 /* bind error, probably perm */ 3659 return (error); 3660 } 3661 SOCK_LOCK(so); 3662 } else { 3663 SCTP_INP_RUNLOCK(inp); 3664 } 3665 /* It appears for 7.0 and on, we must always call this. */ 3666 solisten_proto(so, backlog); 3667 if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) { 3668 /* remove the ACCEPTCONN flag for one-to-many sockets */ 3669 so->so_options &= ~SO_ACCEPTCONN; 3670 } 3671 if (backlog == 0) { 3672 /* turning off listen */ 3673 so->so_options &= ~SO_ACCEPTCONN; 3674 } 3675 SOCK_UNLOCK(so); 3676 return (error); 3677} 3678 3679static int sctp_defered_wakeup_cnt = 0; 3680 3681int 3682sctp_accept(struct socket *so, struct sockaddr **addr) 3683{ 3684 struct sctp_tcb *stcb; 3685 struct sctp_inpcb *inp; 3686 union sctp_sockstore store; 3687 3688 int error; 3689 3690 inp = (struct sctp_inpcb *)so->so_pcb; 3691 3692 if (inp == 0) { 3693 return (ECONNRESET); 3694 } 3695 SCTP_INP_RLOCK(inp); 3696 if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) { 3697 SCTP_INP_RUNLOCK(inp); 3698 return (ENOTSUP); 3699 } 3700 if (so->so_state & SS_ISDISCONNECTED) { 3701 SCTP_INP_RUNLOCK(inp); 3702 return (ECONNABORTED); 3703 } 3704 stcb = LIST_FIRST(&inp->sctp_asoc_list); 3705 if (stcb == NULL) { 3706 SCTP_INP_RUNLOCK(inp); 3707 return (ECONNRESET); 3708 } 3709 SCTP_TCB_LOCK(stcb); 3710 SCTP_INP_RUNLOCK(inp); 3711 store = stcb->asoc.primary_destination->ro._l_addr; 3712 SCTP_TCB_UNLOCK(stcb); 3713 if (store.sa.sa_family == AF_INET) { 3714 struct sockaddr_in *sin; 3715 3716 SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin); 3717 sin->sin_family = AF_INET; 3718 sin->sin_len = sizeof(*sin); 3719 sin->sin_port = ((struct sockaddr_in *)&store)->sin_port; 3720 sin->sin_addr = ((struct sockaddr_in *)&store)->sin_addr; 3721 *addr = (struct sockaddr *)sin; 3722 } else { 3723 struct sockaddr_in6 *sin6; 3724 3725 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 3726 sin6->sin6_family = AF_INET6; 3727 sin6->sin6_len = sizeof(*sin6); 3728 sin6->sin6_port = ((struct sockaddr_in6 *)&store)->sin6_port; 3729 3730 sin6->sin6_addr = ((struct sockaddr_in6 *)&store)->sin6_addr; 3731 if ((error = sa6_recoverscope(sin6)) != 0) { 3732 SCTP_FREE_SONAME(sin6); 3733 return (error); 3734 } 3735 *addr = (struct sockaddr *)sin6; 3736 } 3737 /* Wake any delayed sleep action */ 3738 if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) { 3739 SCTP_INP_WLOCK(inp); 3740 inp->sctp_flags &= ~SCTP_PCB_FLAGS_DONT_WAKE; 3741 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT) { 3742 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT; 3743 SCTP_INP_WUNLOCK(inp); 3744 SOCKBUF_LOCK(&inp->sctp_socket->so_snd); 3745 if (sowriteable(inp->sctp_socket)) { 3746 sowwakeup_locked(inp->sctp_socket); 3747 } else { 3748 SOCKBUF_UNLOCK(&inp->sctp_socket->so_snd); 3749 } 3750 SCTP_INP_WLOCK(inp); 3751 } 3752 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT) { 3753 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT; 3754 SCTP_INP_WUNLOCK(inp); 3755 SOCKBUF_LOCK(&inp->sctp_socket->so_rcv); 3756 if (soreadable(inp->sctp_socket)) { 3757 sctp_defered_wakeup_cnt++; 3758 sorwakeup_locked(inp->sctp_socket); 3759 } else { 3760 SOCKBUF_UNLOCK(&inp->sctp_socket->so_rcv); 3761 } 3762 SCTP_INP_WLOCK(inp); 3763 } 3764 SCTP_INP_WUNLOCK(inp); 3765 } 3766 return (0); 3767} 3768 3769int 3770sctp_ingetaddr(struct socket *so, struct sockaddr **addr) 3771{ 3772 struct sockaddr_in *sin; 3773 uint32_t vrf_id; 3774 struct sctp_inpcb *inp; 3775 struct sctp_ifa *sctp_ifa; 3776 3777 /* 3778 * Do the malloc first in case it blocks. 3779 */ 3780 SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin); 3781 sin->sin_family = AF_INET; 3782 sin->sin_len = sizeof(*sin); 3783 inp = (struct sctp_inpcb *)so->so_pcb; 3784 if (!inp) { 3785 SCTP_FREE_SONAME(sin); 3786 return ECONNRESET; 3787 } 3788 SCTP_INP_RLOCK(inp); 3789 sin->sin_port = inp->sctp_lport; 3790 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 3791 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 3792 struct sctp_tcb *stcb; 3793 struct sockaddr_in *sin_a; 3794 struct sctp_nets *net; 3795 int fnd; 3796 3797 stcb = LIST_FIRST(&inp->sctp_asoc_list); 3798 if (stcb == NULL) { 3799 goto notConn; 3800 } 3801 fnd = 0; 3802 sin_a = NULL; 3803 SCTP_TCB_LOCK(stcb); 3804 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 3805 sin_a = (struct sockaddr_in *)&net->ro._l_addr; 3806 if (sin_a == NULL) 3807 /* this will make coverity happy */ 3808 continue; 3809 3810 if (sin_a->sin_family == AF_INET) { 3811 fnd = 1; 3812 break; 3813 } 3814 } 3815 if ((!fnd) || (sin_a == NULL)) { 3816 /* punt */ 3817 SCTP_TCB_UNLOCK(stcb); 3818 goto notConn; 3819 } 3820 vrf_id = inp->def_vrf_id; 3821 sctp_ifa = sctp_source_address_selection(inp, 3822 stcb, 3823 (sctp_route_t *) & net->ro, 3824 net, 0, vrf_id); 3825 if (sctp_ifa) { 3826 sin->sin_addr = sctp_ifa->address.sin.sin_addr; 3827 sctp_free_ifa(sctp_ifa); 3828 } 3829 SCTP_TCB_UNLOCK(stcb); 3830 } else { 3831 /* For the bound all case you get back 0 */ 3832 notConn: 3833 sin->sin_addr.s_addr = 0; 3834 } 3835 3836 } else { 3837 /* Take the first IPv4 address in the list */ 3838 struct sctp_laddr *laddr; 3839 int fnd = 0; 3840 3841 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { 3842 if (laddr->ifa->address.sa.sa_family == AF_INET) { 3843 struct sockaddr_in *sin_a; 3844 3845 sin_a = (struct sockaddr_in *)&laddr->ifa->address.sa; 3846 sin->sin_addr = sin_a->sin_addr; 3847 fnd = 1; 3848 break; 3849 } 3850 } 3851 if (!fnd) { 3852 SCTP_FREE_SONAME(sin); 3853 SCTP_INP_RUNLOCK(inp); 3854 return ENOENT; 3855 } 3856 } 3857 SCTP_INP_RUNLOCK(inp); 3858 (*addr) = (struct sockaddr *)sin; 3859 return (0); 3860} 3861 3862int 3863sctp_peeraddr(struct socket *so, struct sockaddr **addr) 3864{ 3865 struct sockaddr_in *sin = (struct sockaddr_in *)*addr; 3866 int fnd; 3867 struct sockaddr_in *sin_a; 3868 struct sctp_inpcb *inp; 3869 struct sctp_tcb *stcb; 3870 struct sctp_nets *net; 3871 3872 /* Do the malloc first in case it blocks. */ 3873 inp = (struct sctp_inpcb *)so->so_pcb; 3874 if ((inp == NULL) || 3875 ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) { 3876 /* UDP type and listeners will drop out here */ 3877 return (ENOTCONN); 3878 } 3879 SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin); 3880 sin->sin_family = AF_INET; 3881 sin->sin_len = sizeof(*sin); 3882 3883 /* We must recapture incase we blocked */ 3884 inp = (struct sctp_inpcb *)so->so_pcb; 3885 if (!inp) { 3886 SCTP_FREE_SONAME(sin); 3887 return ECONNRESET; 3888 } 3889 SCTP_INP_RLOCK(inp); 3890 stcb = LIST_FIRST(&inp->sctp_asoc_list); 3891 if (stcb) { 3892 SCTP_TCB_LOCK(stcb); 3893 } 3894 SCTP_INP_RUNLOCK(inp); 3895 if (stcb == NULL) { 3896 SCTP_FREE_SONAME(sin); 3897 return ECONNRESET; 3898 } 3899 fnd = 0; 3900 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 3901 sin_a = (struct sockaddr_in *)&net->ro._l_addr; 3902 if (sin_a->sin_family == AF_INET) { 3903 fnd = 1; 3904 sin->sin_port = stcb->rport; 3905 sin->sin_addr = sin_a->sin_addr; 3906 break; 3907 } 3908 } 3909 SCTP_TCB_UNLOCK(stcb); 3910 if (!fnd) { 3911 /* No IPv4 address */ 3912 SCTP_FREE_SONAME(sin); 3913 return ENOENT; 3914 } 3915 (*addr) = (struct sockaddr *)sin; 3916 return (0); 3917} 3918 3919struct pr_usrreqs sctp_usrreqs = { 3920 .pru_abort = sctp_abort, 3921 .pru_accept = sctp_accept, 3922 .pru_attach = sctp_attach, 3923 .pru_bind = sctp_bind, 3924 .pru_connect = sctp_connect, 3925 .pru_control = in_control, 3926 .pru_close = sctp_close, 3927 .pru_detach = sctp_close, 3928 .pru_sopoll = sopoll_generic, 3929 .pru_disconnect = sctp_disconnect, 3930 .pru_listen = sctp_listen, 3931 .pru_peeraddr = sctp_peeraddr, 3932 .pru_send = sctp_sendm, 3933 .pru_shutdown = sctp_shutdown, 3934 .pru_sockaddr = sctp_ingetaddr, 3935 .pru_sosend = sctp_sosend, 3936 .pru_soreceive = sctp_soreceive 3937}; 3938