sys/netinet/sctp_usrreq.c

   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("$FreeBSD$");
  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
  54 void
  55 sctp_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  */
  87 void
  88 sctp_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
 102 static void
 103 sctp_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
 149 static void
 150 sctp_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
 221 void
 222 sctp_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
 300 void
 301 sctp_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
 373 static int
 374 sctp_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);
 423 cred_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));
 432 out:
 433         return (error);
 434 }
 435
 436 SYSCTL_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
 440 static void
 441 sctp_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
 450 sctp_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
 482 static int
 483 sctp_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
 538 static int
 539 sctp_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
 558 static void
 559 sctp_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          */
 571 sctp_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
 617 int
 618 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
 619     struct mbuf *control, struct thread *p);
 620
 621
 622 int
 623 sctp_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 */
 665 connected_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
 705 static int
 706 sctp_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
 873 int
 874 sctp_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         }
 993 skip_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  */
1002 static uint32_t
1003 sctp_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
1015 static size_t
1016 sctp_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
1173 static size_t
1174 sctp_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
1187 static int
1188 sctp_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
1238 static int
1239 sctp_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
1248 static int
1249 sctp_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         }
1366 out_now:
1367         if (creat_lock_on)
1368                 SCTP_ASOC_CREATE_UNLOCK(inp);
1369         SCTP_INP_DECR_REF(inp);
1370         return error;
1371 }
1372
1373 #define SCTP_FIND_STCB(inp, stcb, assoc_id) { \
1374         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { \
1375                 SCTP_INP_RLOCK(inp); \
1376                 stcb = LIST_FIRST(&inp->sctp_asoc_list); \
1377                 if (stcb) \
1378                         SCTP_TCB_LOCK(stcb); \
1379                 SCTP_INP_RUNLOCK(inp); \
1380         } else if (assoc_id != 0) { \
1381                 stcb = sctp_findassociation_ep_asocid(inp, assoc_id, 1); \
1382                 if (stcb == NULL) { \
1383                         error = ENOENT; \
1384                         break; \
1385                 } \
1386         } else { \
1387                 stcb = NULL; \
1388         } \
1389   }
1390
1391
1392 #define SCTP_CHECK_AND_CAST(destp, srcp, type, size)  {\
1393         if (size < sizeof(type)) { \
1394                 error = EINVAL; \
1395                 break; \
1396         } else { \
1397                 destp = (type *)srcp; \
1398         } \
1399       }
1400
1401 static int
1402 sctp_getopt(struct socket *so, int optname, void *optval, size_t *optsize,
1403     void *p)
1404 {
1405         struct sctp_inpcb *inp;
1406         int error, val = 0;
1407         struct sctp_tcb *stcb = NULL;
1408
1409         if (optval == NULL) {
1410                 return (EINVAL);
1411         }
1412         inp = (struct sctp_inpcb *)so->so_pcb;
1413         if (inp == 0)
1414                 return EINVAL;
1415         error = 0;
1416
1417         switch (optname) {
1418         case SCTP_NODELAY:
1419         case SCTP_AUTOCLOSE:
1420         case SCTP_EXPLICIT_EOR:
1421         case SCTP_AUTO_ASCONF:
1422         case SCTP_DISABLE_FRAGMENTS:
1423         case SCTP_I_WANT_MAPPED_V4_ADDR:
1424         case SCTP_USE_EXT_RCVINFO:
1425                 SCTP_INP_RLOCK(inp);
1426                 switch (optname) {
1427                 case SCTP_DISABLE_FRAGMENTS:
1428                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NO_FRAGMENT);
1429                         break;
1430                 case SCTP_I_WANT_MAPPED_V4_ADDR:
1431                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4);
1432                         break;
1433                 case SCTP_AUTO_ASCONF:
1434                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
1435                         break;
1436                 case SCTP_EXPLICIT_EOR:
1437                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
1438                         break;
1439                 case SCTP_NODELAY:
1440                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NODELAY);
1441                         break;
1442                 case SCTP_USE_EXT_RCVINFO:
1443                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO);
1444                         break;
1445                 case SCTP_AUTOCLOSE:
1446                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTOCLOSE))
1447                                 val = TICKS_TO_SEC(inp->sctp_ep.auto_close_time);
1448                         else
1449                                 val = 0;
1450                         break;
1451
1452                 default:
1453                         error = ENOPROTOOPT;
1454                 }               /* end switch (sopt->sopt_name) */
1455                 if (optname != SCTP_AUTOCLOSE) {
1456                         /* make it an "on/off" value */
1457                         val = (val != 0);
1458                 }
1459                 if (*optsize < sizeof(val)) {
1460                         error = EINVAL;
1461                 }
1462                 SCTP_INP_RUNLOCK(inp);
1463                 if (error == 0) {
1464                         /* return the option value */
1465                         *(int *)optval = val;
1466                         *optsize = sizeof(val);
1467                 }
1468                 break;
1469
1470         case SCTP_PARTIAL_DELIVERY_POINT:
1471                 {
1472                         uint32_t *value;
1473
1474                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1475                         *value = inp->partial_delivery_point;
1476                         *optsize = sizeof(uint32_t);
1477                 }
1478                 break;
1479         case SCTP_FRAGMENT_INTERLEAVE:
1480                 {
1481                         uint32_t *value;
1482
1483                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1484                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) {
1485                                 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) {
1486                                         *value = SCTP_FRAG_LEVEL_2;
1487                                 } else {
1488                                         *value = SCTP_FRAG_LEVEL_1;
1489                                 }
1490                         } else {
1491                                 *value = SCTP_FRAG_LEVEL_0;
1492                         }
1493                         *optsize = sizeof(uint32_t);
1494                 }
1495                 break;
1496         case SCTP_CMT_ON_OFF:
1497                 {
1498                         struct sctp_assoc_value *av;
1499
1500                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1501                         if (sctp_cmt_on_off) {
1502                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1503                                 if (stcb) {
1504                                         av->assoc_value = stcb->asoc.sctp_cmt_on_off;
1505                                         SCTP_TCB_UNLOCK(stcb);
1506
1507                                 } else {
1508                                         error = ENOTCONN;
1509                                 }
1510                         } else {
1511                                 error = ENOPROTOOPT;
1512                         }
1513                         *optsize = sizeof(*av);
1514                 }
1515                 break;
1516         case SCTP_GET_ADDR_LEN:
1517                 {
1518                         struct sctp_assoc_value *av;
1519
1520                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1521                         error = EINVAL;
1522 #ifdef INET
1523                         if (av->assoc_value == AF_INET) {
1524                                 av->assoc_value = sizeof(struct sockaddr_in);
1525                                 error = 0;
1526                         }
1527 #endif
1528 #ifdef INET6
1529                         if (av->assoc_value == AF_INET6) {
1530                                 av->assoc_value = sizeof(struct sockaddr_in6);
1531                                 error = 0;
1532                         }
1533 #endif
1534                         *optsize = sizeof(*av);
1535                 }
1536                 break;
1537         case SCTP_GET_ASOC_ID_LIST:
1538                 {
1539                         struct sctp_assoc_ids *ids;
1540                         int cnt, at;
1541                         uint16_t orig;
1542
1543                         SCTP_CHECK_AND_CAST(ids, optval, struct sctp_assoc_ids, *optsize);
1544                         cnt = 0;
1545                         SCTP_INP_RLOCK(inp);
1546                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
1547                         if (stcb == NULL) {
1548                 none_out_now:
1549                                 ids->asls_numb_present = 0;
1550                                 ids->asls_more_to_get = 0;
1551                                 SCTP_INP_RUNLOCK(inp);
1552                                 break;
1553                         }
1554                         orig = ids->asls_assoc_start;
1555                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
1556                         while (orig) {
1557                                 stcb = LIST_NEXT(stcb, sctp_tcblist);
1558                                 orig--;
1559                                 cnt--;
1560                                 if (stcb == NULL)
1561                                         goto none_out_now;
1562                         }
1563                         if (stcb == NULL)
1564                                 goto none_out_now;
1565
1566                         at = 0;
1567                         ids->asls_numb_present = 0;
1568                         ids->asls_more_to_get = 1;
1569                         while (at < MAX_ASOC_IDS_RET) {
1570                                 ids->asls_assoc_id[at] = sctp_get_associd(stcb);
1571                                 at++;
1572                                 ids->asls_numb_present++;
1573                                 stcb = LIST_NEXT(stcb, sctp_tcblist);
1574                                 if (stcb == NULL) {
1575                                         ids->asls_more_to_get = 0;
1576                                         break;
1577                                 }
1578                         }
1579                         SCTP_INP_RUNLOCK(inp);
1580                 }
1581                 break;
1582         case SCTP_CONTEXT:
1583                 {
1584                         struct sctp_assoc_value *av;
1585
1586                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1587                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1588
1589                         if (stcb) {
1590                                 av->assoc_value = stcb->asoc.context;
1591                                 SCTP_TCB_UNLOCK(stcb);
1592                         } else {
1593                                 SCTP_INP_RLOCK(inp);
1594                                 av->assoc_value = inp->sctp_context;
1595                                 SCTP_INP_RUNLOCK(inp);
1596                         }
1597                         *optsize = sizeof(*av);
1598                 }
1599                 break;
1600         case SCTP_VRF_ID:
1601                 {
1602                         uint32_t *vrf_id;
1603
1604                         SCTP_CHECK_AND_CAST(vrf_id, optval, uint32_t, *optsize);
1605                         *vrf_id = inp->def_vrf_id;
1606                         break;
1607                 }
1608         case SCTP_GET_ASOC_VRF:
1609                 {
1610                         struct sctp_assoc_value *id;
1611
1612                         SCTP_CHECK_AND_CAST(id, optval, struct sctp_assoc_value, *optsize);
1613                         SCTP_FIND_STCB(inp, stcb, id->assoc_id);
1614                         if (stcb == NULL) {
1615                                 error = EINVAL;
1616                                 break;
1617                         }
1618                         id->assoc_value = stcb->asoc.vrf_id;
1619                         break;
1620                 }
1621         case SCTP_GET_VRF_IDS:
1622                 {
1623                         error = EOPNOTSUPP;
1624                         break;
1625                 }
1626         case SCTP_GET_NONCE_VALUES:
1627                 {
1628                         struct sctp_get_nonce_values *gnv;
1629
1630                         SCTP_CHECK_AND_CAST(gnv, optval, struct sctp_get_nonce_values, *optsize);
1631                         SCTP_FIND_STCB(inp, stcb, gnv->gn_assoc_id);
1632
1633                         if (stcb) {
1634                                 gnv->gn_peers_tag = stcb->asoc.peer_vtag;
1635                                 gnv->gn_local_tag = stcb->asoc.my_vtag;
1636                                 SCTP_TCB_UNLOCK(stcb);
1637                         } else {
1638                                 error = ENOTCONN;
1639                         }
1640                         *optsize = sizeof(*gnv);
1641                 }
1642                 break;
1643         case SCTP_DELAYED_ACK_TIME:
1644                 {
1645                         struct sctp_assoc_value *tm;
1646
1647                         SCTP_CHECK_AND_CAST(tm, optval, struct sctp_assoc_value, *optsize);
1648                         SCTP_FIND_STCB(inp, stcb, tm->assoc_id);
1649
1650                         if (stcb) {
1651                                 tm->assoc_value = stcb->asoc.delayed_ack;
1652                                 SCTP_TCB_UNLOCK(stcb);
1653                         } else {
1654                                 SCTP_INP_RLOCK(inp);
1655                                 tm->assoc_value = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
1656                                 SCTP_INP_RUNLOCK(inp);
1657                         }
1658                         *optsize = sizeof(*tm);
1659                 }
1660                 break;
1661
1662         case SCTP_GET_SNDBUF_USE:
1663                 {
1664                         struct sctp_sockstat *ss;
1665
1666                         SCTP_CHECK_AND_CAST(ss, optval, struct sctp_sockstat, *optsize);
1667                         SCTP_FIND_STCB(inp, stcb, ss->ss_assoc_id);
1668
1669                         if (stcb) {
1670                                 ss->ss_total_sndbuf = stcb->asoc.total_output_queue_size;
1671                                 ss->ss_total_recv_buf = (stcb->asoc.size_on_reasm_queue +
1672                                     stcb->asoc.size_on_all_streams);
1673                                 SCTP_TCB_UNLOCK(stcb);
1674                         } else {
1675                                 error = ENOTCONN;
1676                         }
1677                         *optsize = sizeof(struct sctp_sockstat);
1678                 }
1679                 break;
1680         case SCTP_MAXBURST:
1681                 {
1682                         uint8_t *value;
1683
1684                         SCTP_CHECK_AND_CAST(value, optval, uint8_t, *optsize);
1685
1686                         SCTP_INP_RLOCK(inp);
1687                         *value = inp->sctp_ep.max_burst;
1688                         SCTP_INP_RUNLOCK(inp);
1689                         *optsize = sizeof(uint8_t);
1690                 }
1691                 break;
1692         case SCTP_MAXSEG:
1693                 {
1694                         struct sctp_assoc_value *av;
1695                         int ovh;
1696
1697                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1698                         if (av->assoc_id) {
1699                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1700                         } else {
1701                                 stcb = NULL;
1702                         }
1703
1704                         if (stcb) {
1705                                 av->assoc_value = sctp_get_frag_point(stcb, &stcb->asoc);
1706                                 SCTP_TCB_UNLOCK(stcb);
1707                         } else {
1708                                 SCTP_INP_RLOCK(inp);
1709                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1710                                         ovh = SCTP_MED_OVERHEAD;
1711                                 } else {
1712                                         ovh = SCTP_MED_V4_OVERHEAD;
1713                                 }
1714                                 av->assoc_value = inp->sctp_frag_point - ovh;
1715                                 SCTP_INP_RUNLOCK(inp);
1716                         }
1717                         *optsize = sizeof(struct sctp_assoc_value);
1718                 }
1719                 break;
1720         case SCTP_GET_STAT_LOG:
1721 #ifdef SCTP_STAT_LOGGING
1722                 error = sctp_fill_stat_log(optval, optsize);
1723 #else
1724                 error = EOPNOTSUPP;
1725 #endif
1726                 break;
1727         case SCTP_EVENTS:
1728                 {
1729                         struct sctp_event_subscribe *events;
1730
1731                         SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, *optsize);
1732                         memset(events, 0, sizeof(*events));
1733                         SCTP_INP_RLOCK(inp);
1734                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT))
1735                                 events->sctp_data_io_event = 1;
1736
1737                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT))
1738                                 events->sctp_association_event = 1;
1739
1740                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT))
1741                                 events->sctp_address_event = 1;
1742
1743                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT))
1744                                 events->sctp_send_failure_event = 1;
1745
1746                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR))
1747                                 events->sctp_peer_error_event = 1;
1748
1749                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT))
1750                                 events->sctp_shutdown_event = 1;
1751
1752                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT))
1753                                 events->sctp_partial_delivery_event = 1;
1754
1755                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT))
1756                                 events->sctp_adaptation_layer_event = 1;
1757
1758                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT))
1759                                 events->sctp_authentication_event = 1;
1760
1761                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT))
1762                                 events->sctp_stream_reset_events = 1;
1763                         SCTP_INP_RUNLOCK(inp);
1764                         *optsize = sizeof(struct sctp_event_subscribe);
1765                 }
1766                 break;
1767
1768         case SCTP_ADAPTATION_LAYER:
1769                 {
1770                         uint32_t *value;
1771
1772                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1773
1774                         SCTP_INP_RLOCK(inp);
1775                         *value = inp->sctp_ep.adaptation_layer_indicator;
1776                         SCTP_INP_RUNLOCK(inp);
1777                         *optsize = sizeof(uint32_t);
1778                 }
1779                 break;
1780         case SCTP_SET_INITIAL_DBG_SEQ:
1781                 {
1782                         uint32_t *value;
1783
1784                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1785                         SCTP_INP_RLOCK(inp);
1786                         *value = inp->sctp_ep.initial_sequence_debug;
1787                         SCTP_INP_RUNLOCK(inp);
1788                         *optsize = sizeof(uint32_t);
1789                 }
1790                 break;
1791         case SCTP_GET_LOCAL_ADDR_SIZE:
1792                 {
1793                         uint32_t *value;
1794
1795                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1796                         SCTP_INP_RLOCK(inp);
1797                         *value = sctp_count_max_addresses(inp);
1798                         SCTP_INP_RUNLOCK(inp);
1799                         *optsize = sizeof(uint32_t);
1800                 }
1801                 break;
1802         case SCTP_GET_REMOTE_ADDR_SIZE:
1803                 {
1804                         uint32_t *value;
1805                         size_t size;
1806                         struct sctp_nets *net;
1807
1808                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1809                         /* FIXME MT: change to sctp_assoc_value? */
1810                         SCTP_FIND_STCB(inp, stcb, (sctp_assoc_t) * value);
1811
1812                         if (stcb) {
1813                                 size = 0;
1814                                 /* Count the sizes */
1815                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1816                                         if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) ||
1817                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) {
1818                                                 size += sizeof(struct sockaddr_in6);
1819                                         } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) {
1820                                                 size += sizeof(struct sockaddr_in);
1821                                         } else {
1822                                                 /* huh */
1823                                                 break;
1824                                         }
1825                                 }
1826                                 SCTP_TCB_UNLOCK(stcb);
1827                                 *value = (uint32_t) size;
1828                         } else {
1829                                 error = ENOTCONN;
1830                         }
1831                         *optsize = sizeof(uint32_t);
1832                 }
1833                 break;
1834         case SCTP_GET_PEER_ADDRESSES:
1835                 /*
1836                  * Get the address information, an array is passed in to
1837                  * fill up we pack it.
1838                  */
1839                 {
1840                         size_t cpsz, left;
1841                         struct sockaddr_storage *sas;
1842                         struct sctp_nets *net;
1843                         struct sctp_getaddresses *saddr;
1844
1845                         SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize);
1846                         SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id);
1847
1848                         if (stcb) {
1849                                 left = (*optsize) - sizeof(struct sctp_getaddresses);
1850                                 *optsize = sizeof(struct sctp_getaddresses);
1851                                 sas = (struct sockaddr_storage *)&saddr->addr[0];
1852
1853                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1854                                         if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) ||
1855                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) {
1856                                                 cpsz = sizeof(struct sockaddr_in6);
1857                                         } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) {
1858                                                 cpsz = sizeof(struct sockaddr_in);
1859                                         } else {
1860                                                 /* huh */
1861                                                 break;
1862                                         }
1863                                         if (left < cpsz) {
1864                                                 /* not enough room. */
1865                                                 break;
1866                                         }
1867                                         if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) &&
1868                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET)) {
1869                                                 /* Must map the address */
1870                                                 in6_sin_2_v4mapsin6((struct sockaddr_in *)&net->ro._l_addr,
1871                                                     (struct sockaddr_in6 *)sas);
1872                                         } else {
1873                                                 memcpy(sas, &net->ro._l_addr, cpsz);
1874                                         }
1875                                         ((struct sockaddr_in *)sas)->sin_port = stcb->rport;
1876
1877                                         sas = (struct sockaddr_storage *)((caddr_t)sas + cpsz);
1878                                         left -= cpsz;
1879                                         *optsize += cpsz;
1880                                 }
1881                                 SCTP_TCB_UNLOCK(stcb);
1882                         } else {
1883                                 error = ENOENT;
1884                         }
1885                 }
1886                 break;
1887         case SCTP_GET_LOCAL_ADDRESSES:
1888                 {
1889                         size_t limit, actual;
1890                         struct sockaddr_storage *sas;
1891                         struct sctp_getaddresses *saddr;
1892
1893                         SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize);
1894                         SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id);
1895
1896                         sas = (struct sockaddr_storage *)&saddr->addr[0];
1897                         limit = *optsize - sizeof(sctp_assoc_t);
1898                         actual = sctp_fill_up_addresses(inp, stcb, limit, sas);
1899                         if (stcb)
1900                                 SCTP_TCB_UNLOCK(stcb);
1901                         *optsize = sizeof(struct sockaddr_storage) + actual;
1902                 }
1903                 break;
1904         case SCTP_PEER_ADDR_PARAMS:
1905                 {
1906                         struct sctp_paddrparams *paddrp;
1907                         struct sctp_nets *net;
1908
1909                         SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, *optsize);
1910                         SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id);
1911
1912                         net = NULL;
1913                         if (stcb) {
1914                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address);
1915                         } else {
1916                                 /*
1917                                  * We increment here since
1918                                  * sctp_findassociation_ep_addr() wil do a
1919                                  * decrement if it finds the stcb as long as
1920                                  * the locked tcb (last argument) is NOT a
1921                                  * TCB.. aka NULL.
1922                                  */
1923                                 SCTP_INP_INCR_REF(inp);
1924                                 stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddrp->spp_address, &net, NULL, NULL);
1925                                 if (stcb == NULL) {
1926                                         SCTP_INP_DECR_REF(inp);
1927                                 }
1928                         }
1929
1930                         if (stcb) {
1931                                 /* Applys to the specific association */
1932                                 paddrp->spp_flags = 0;
1933                                 if (net) {
1934                                         paddrp->spp_pathmaxrxt = net->failure_threshold;
1935                                         paddrp->spp_pathmtu = net->mtu;
1936                                         /* get flags for HB */
1937                                         if (net->dest_state & SCTP_ADDR_NOHB)
1938                                                 paddrp->spp_flags |= SPP_HB_DISABLE;
1939                                         else
1940                                                 paddrp->spp_flags |= SPP_HB_ENABLE;
1941                                         /* get flags for PMTU */
1942                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
1943                                                 paddrp->spp_flags |= SPP_PMTUD_ENABLE;
1944                                         } else {
1945                                                 paddrp->spp_flags |= SPP_PMTUD_DISABLE;
1946                                         }
1947 #ifdef INET
1948                                         if (net->ro._l_addr.sin.sin_family == AF_INET) {
1949                                                 paddrp->spp_ipv4_tos = net->tos_flowlabel & 0x000000fc;
1950                                                 paddrp->spp_flags |= SPP_IPV4_TOS;
1951                                         }
1952 #endif
1953 #ifdef INET6
1954                                         if (net->ro._l_addr.sin6.sin6_family == AF_INET6) {
1955                                                 paddrp->spp_ipv6_flowlabel = net->tos_flowlabel;
1956                                                 paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
1957                                         }
1958 #endif
1959                                 } else {
1960                                         /*
1961                                          * No destination so return default
1962                                          * value
1963                                          */
1964                                         paddrp->spp_pathmaxrxt = stcb->asoc.def_net_failure;
1965                                         paddrp->spp_pathmtu = sctp_get_frag_point(stcb, &stcb->asoc);
1966 #ifdef INET
1967                                         paddrp->spp_ipv4_tos = stcb->asoc.default_tos & 0x000000fc;
1968                                         paddrp->spp_flags |= SPP_IPV4_TOS;
1969 #endif
1970 #ifdef INET6
1971                                         paddrp->spp_ipv6_flowlabel = stcb->asoc.default_flowlabel;
1972                                         paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
1973 #endif
1974                                         /* default settings should be these */
1975                                         if (sctp_is_hb_timer_running(stcb)) {
1976                                                 paddrp->spp_flags |= SPP_HB_ENABLE;
1977                                         }
1978                                 }
1979                                 paddrp->spp_hbinterval = stcb->asoc.heart_beat_delay;
1980                                 paddrp->spp_assoc_id = sctp_get_associd(stcb);
1981                                 SCTP_TCB_UNLOCK(stcb);
1982                         } else {
1983                                 /* Use endpoint defaults */
1984                                 SCTP_INP_RLOCK(inp);
1985                                 paddrp->spp_pathmaxrxt = inp->sctp_ep.def_net_failure;
1986                                 paddrp->spp_hbinterval = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
1987                                 paddrp->spp_assoc_id = (sctp_assoc_t) 0;
1988                                 /* get inp's default */
1989 #ifdef INET
1990                                 paddrp->spp_ipv4_tos = inp->ip_inp.inp.inp_ip_tos;
1991                                 paddrp->spp_flags |= SPP_IPV4_TOS;
1992 #endif
1993 #ifdef INET6
1994                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1995                                         paddrp->spp_ipv6_flowlabel = ((struct in6pcb *)inp)->in6p_flowinfo;
1996                                         paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
1997                                 }
1998 #endif
1999                                 /* can't return this */
2000                                 paddrp->spp_pathmaxrxt = 0;
2001                                 paddrp->spp_pathmtu = 0;
2002                                 /* default behavior, no stcb */
2003                                 paddrp->spp_flags = SPP_HB_ENABLE | SPP_PMTUD_ENABLE;
2004
2005                                 SCTP_INP_RUNLOCK(inp);
2006                         }
2007                         *optsize = sizeof(struct sctp_paddrparams);
2008                 }
2009                 break;
2010         case SCTP_GET_PEER_ADDR_INFO:
2011                 {
2012                         struct sctp_paddrinfo *paddri;
2013                         struct sctp_nets *net;
2014
2015                         SCTP_CHECK_AND_CAST(paddri, optval, struct sctp_paddrinfo, *optsize);
2016                         SCTP_FIND_STCB(inp, stcb, paddri->spinfo_assoc_id);
2017
2018                         net = NULL;
2019                         if (stcb) {
2020                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddri->spinfo_address);
2021                         } else {
2022                                 /*
2023                                  * We increment here since
2024                                  * sctp_findassociation_ep_addr() wil do a
2025                                  * decrement if it finds the stcb as long as
2026                                  * the locked tcb (last argument) is NOT a
2027                                  * TCB.. aka NULL.
2028                                  */
2029                                 SCTP_INP_INCR_REF(inp);
2030                                 stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddri->spinfo_address, &net, NULL, NULL);
2031                                 if (stcb == NULL) {
2032                                         SCTP_INP_DECR_REF(inp);
2033                                 }
2034                         }
2035
2036                         if ((stcb) && (net)) {
2037                                 paddri->spinfo_state = net->dest_state & (SCTP_REACHABLE_MASK | SCTP_ADDR_NOHB);
2038                                 paddri->spinfo_cwnd = net->cwnd;
2039                                 paddri->spinfo_srtt = ((net->lastsa >> 2) + net->lastsv) >> 1;
2040                                 paddri->spinfo_rto = net->RTO;
2041                                 paddri->spinfo_assoc_id = sctp_get_associd(stcb);
2042                                 SCTP_TCB_UNLOCK(stcb);
2043                         } else {
2044                                 if (stcb) {
2045                                         SCTP_TCB_UNLOCK(stcb);
2046                                 }
2047                                 error = ENOENT;
2048                         }
2049                         *optsize = sizeof(struct sctp_paddrinfo);
2050                 }
2051                 break;
2052         case SCTP_PCB_STATUS:
2053                 {
2054                         struct sctp_pcbinfo *spcb;
2055
2056                         SCTP_CHECK_AND_CAST(spcb, optval, struct sctp_pcbinfo, *optsize);
2057                         sctp_fill_pcbinfo(spcb);
2058                         *optsize = sizeof(struct sctp_pcbinfo);
2059                 }
2060                 break;
2061
2062         case SCTP_STATUS:
2063                 {
2064                         struct sctp_nets *net;
2065                         struct sctp_status *sstat;
2066
2067                         SCTP_CHECK_AND_CAST(sstat, optval, struct sctp_status, *optsize);
2068                         SCTP_FIND_STCB(inp, stcb, sstat->sstat_assoc_id);
2069
2070                         if (stcb == NULL) {
2071                                 error = EINVAL;
2072                                 break;
2073                         }
2074                         /*
2075                          * I think passing the state is fine since
2076                          * sctp_constants.h will be available to the user
2077                          * land.
2078                          */
2079                         sstat->sstat_state = stcb->asoc.state;
2080                         sstat->sstat_rwnd = stcb->asoc.peers_rwnd;
2081                         sstat->sstat_unackdata = stcb->asoc.sent_queue_cnt;
2082                         /*
2083                          * We can't include chunks that have been passed to
2084                          * the socket layer. Only things in queue.
2085                          */
2086                         sstat->sstat_penddata = (stcb->asoc.cnt_on_reasm_queue +
2087                             stcb->asoc.cnt_on_all_streams);
2088
2089
2090                         sstat->sstat_instrms = stcb->asoc.streamincnt;
2091                         sstat->sstat_outstrms = stcb->asoc.streamoutcnt;
2092                         sstat->sstat_fragmentation_point = sctp_get_frag_point(stcb, &stcb->asoc);
2093                         memcpy(&sstat->sstat_primary.spinfo_address,
2094                             &stcb->asoc.primary_destination->ro._l_addr,
2095                             ((struct sockaddr *)(&stcb->asoc.primary_destination->ro._l_addr))->sa_len);
2096                         net = stcb->asoc.primary_destination;
2097                         ((struct sockaddr_in *)&sstat->sstat_primary.spinfo_address)->sin_port = stcb->rport;
2098                         /*
2099                          * Again the user can get info from sctp_constants.h
2100                          * for what the state of the network is.
2101                          */
2102                         sstat->sstat_primary.spinfo_state = net->dest_state & SCTP_REACHABLE_MASK;
2103                         sstat->sstat_primary.spinfo_cwnd = net->cwnd;
2104                         sstat->sstat_primary.spinfo_srtt = net->lastsa;
2105                         sstat->sstat_primary.spinfo_rto = net->RTO;
2106                         sstat->sstat_primary.spinfo_mtu = net->mtu;
2107                         sstat->sstat_primary.spinfo_assoc_id = sctp_get_associd(stcb);
2108                         SCTP_TCB_UNLOCK(stcb);
2109                         *optsize = sizeof(*sstat);
2110                 }
2111                 break;
2112         case SCTP_RTOINFO:
2113                 {
2114                         struct sctp_rtoinfo *srto;
2115
2116                         SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, *optsize);
2117                         SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id);
2118
2119                         if (stcb) {
2120                                 srto->srto_initial = stcb->asoc.initial_rto;
2121                                 srto->srto_max = stcb->asoc.maxrto;
2122                                 srto->srto_min = stcb->asoc.minrto;
2123                                 SCTP_TCB_UNLOCK(stcb);
2124                         } else {
2125                                 SCTP_INP_RLOCK(inp);
2126                                 srto->srto_initial = inp->sctp_ep.initial_rto;
2127                                 srto->srto_max = inp->sctp_ep.sctp_maxrto;
2128                                 srto->srto_min = inp->sctp_ep.sctp_minrto;
2129                                 SCTP_INP_RUNLOCK(inp);
2130                         }
2131                         *optsize = sizeof(*srto);
2132                 }
2133                 break;
2134         case SCTP_ASSOCINFO:
2135                 {
2136                         struct sctp_assocparams *sasoc;
2137
2138                         SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, *optsize);
2139                         SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id);
2140
2141                         if (stcb) {
2142                                 sasoc->sasoc_asocmaxrxt = stcb->asoc.max_send_times;
2143                                 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets;
2144                                 sasoc->sasoc_peer_rwnd = stcb->asoc.peers_rwnd;
2145                                 sasoc->sasoc_local_rwnd = stcb->asoc.my_rwnd;
2146                                 sasoc->sasoc_cookie_life = stcb->asoc.cookie_life;
2147                                 sasoc->sasoc_sack_delay = stcb->asoc.delayed_ack;
2148                                 sasoc->sasoc_sack_freq = stcb->asoc.sack_freq;
2149                                 SCTP_TCB_UNLOCK(stcb);
2150                         } else {
2151                                 SCTP_INP_RLOCK(inp);
2152                                 sasoc->sasoc_asocmaxrxt = inp->sctp_ep.max_send_times;
2153                                 sasoc->sasoc_number_peer_destinations = 0;
2154                                 sasoc->sasoc_peer_rwnd = 0;
2155                                 sasoc->sasoc_local_rwnd = sbspace(&inp->sctp_socket->so_rcv);
2156                                 sasoc->sasoc_cookie_life = inp->sctp_ep.def_cookie_life;
2157                                 sasoc->sasoc_sack_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
2158                                 sasoc->sasoc_sack_freq = inp->sctp_ep.sctp_sack_freq;
2159                                 SCTP_INP_RUNLOCK(inp);
2160                         }
2161                         *optsize = sizeof(*sasoc);
2162                 }
2163                 break;
2164         case SCTP_DEFAULT_SEND_PARAM:
2165                 {
2166                         struct sctp_sndrcvinfo *s_info;
2167
2168                         SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, *optsize);
2169                         SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id);
2170
2171                         if (stcb) {
2172                                 *s_info = stcb->asoc.def_send;
2173                                 SCTP_TCB_UNLOCK(stcb);
2174                         } else {
2175                                 SCTP_INP_RLOCK(inp);
2176                                 *s_info = inp->def_send;
2177                                 SCTP_INP_RUNLOCK(inp);
2178                         }
2179                         *optsize = sizeof(*s_info);
2180                 }
2181                 break;
2182         case SCTP_INITMSG:
2183                 {
2184                         struct sctp_initmsg *sinit;
2185
2186                         SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, *optsize);
2187                         SCTP_INP_RLOCK(inp);
2188                         sinit->sinit_num_ostreams = inp->sctp_ep.pre_open_stream_count;
2189                         sinit->sinit_max_instreams = inp->sctp_ep.max_open_streams_intome;
2190                         sinit->sinit_max_attempts = inp->sctp_ep.max_init_times;
2191                         sinit->sinit_max_init_timeo = inp->sctp_ep.initial_init_rto_max;
2192                         SCTP_INP_RUNLOCK(inp);
2193                         *optsize = sizeof(*sinit);
2194                 }
2195                 break;
2196         case SCTP_PRIMARY_ADDR:
2197                 /* we allow a "get" operation on this */
2198                 {
2199                         struct sctp_setprim *ssp;
2200
2201                         SCTP_CHECK_AND_CAST(ssp, optval, struct sctp_setprim, *optsize);
2202                         SCTP_FIND_STCB(inp, stcb, ssp->ssp_assoc_id);
2203
2204                         if (stcb) {
2205                                 /* simply copy out the sockaddr_storage... */
2206                                 memcpy(&ssp->ssp_addr, &stcb->asoc.primary_destination->ro._l_addr,
2207                                     ((struct sockaddr *)&stcb->asoc.primary_destination->ro._l_addr)->sa_len);
2208                                 SCTP_TCB_UNLOCK(stcb);
2209                         } else {
2210                                 error = EINVAL;
2211                         }
2212                         *optsize = sizeof(*ssp);
2213                 }
2214                 break;
2215
2216         case SCTP_HMAC_IDENT:
2217                 {
2218                         struct sctp_hmacalgo *shmac;
2219                         sctp_hmaclist_t *hmaclist;
2220                         uint32_t size;
2221                         int i;
2222
2223                         SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, *optsize);
2224
2225                         SCTP_INP_RLOCK(inp);
2226                         hmaclist = inp->sctp_ep.local_hmacs;
2227                         if (hmaclist == NULL) {
2228                                 /* no HMACs to return */
2229                                 *optsize = sizeof(*shmac);
2230                                 SCTP_INP_RUNLOCK(inp);
2231                                 break;
2232                         }
2233                         /* is there room for all of the hmac ids? */
2234                         size = sizeof(*shmac) + (hmaclist->num_algo *
2235                             sizeof(shmac->shmac_idents[0]));
2236                         if ((size_t)(*optsize) < size) {
2237                                 error = EINVAL;
2238                                 SCTP_INP_RUNLOCK(inp);
2239                                 break;
2240                         }
2241                         /* copy in the list */
2242                         for (i = 0; i < hmaclist->num_algo; i++)
2243                                 shmac->shmac_idents[i] = hmaclist->hmac[i];
2244                         SCTP_INP_RUNLOCK(inp);
2245                         *optsize = size;
2246                         break;
2247                 }
2248         case SCTP_AUTH_ACTIVE_KEY:
2249                 {
2250                         struct sctp_authkeyid *scact;
2251
2252                         SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, *optsize);
2253                         SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id);
2254
2255                         if (stcb) {
2256                                 /* get the active key on the assoc */
2257                                 scact->scact_keynumber = stcb->asoc.authinfo.assoc_keyid;
2258                                 SCTP_TCB_UNLOCK(stcb);
2259                         } else {
2260                                 /* get the endpoint active key */
2261                                 SCTP_INP_RLOCK(inp);
2262                                 scact->scact_keynumber = inp->sctp_ep.default_keyid;
2263                                 SCTP_INP_RUNLOCK(inp);
2264                         }
2265                         *optsize = sizeof(*scact);
2266                         break;
2267                 }
2268         case SCTP_LOCAL_AUTH_CHUNKS:
2269                 {
2270                         struct sctp_authchunks *sac;
2271                         sctp_auth_chklist_t *chklist = NULL;
2272                         size_t size = 0;
2273
2274                         SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize);
2275                         SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id);
2276
2277                         if (stcb) {
2278                                 /* get off the assoc */
2279                                 chklist = stcb->asoc.local_auth_chunks;
2280                                 /* is there enough space? */
2281                                 size = sctp_auth_get_chklist_size(chklist);
2282                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2283                                         error = EINVAL;
2284                                 } else {
2285                                         /* copy in the chunks */
2286                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2287                                 }
2288                                 SCTP_TCB_UNLOCK(stcb);
2289                         } else {
2290                                 /* get off the endpoint */
2291                                 SCTP_INP_RLOCK(inp);
2292                                 chklist = inp->sctp_ep.local_auth_chunks;
2293                                 /* is there enough space? */
2294                                 size = sctp_auth_get_chklist_size(chklist);
2295                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2296                                         error = EINVAL;
2297                                 } else {
2298                                         /* copy in the chunks */
2299                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2300                                 }
2301                                 SCTP_INP_RUNLOCK(inp);
2302                         }
2303                         *optsize = sizeof(struct sctp_authchunks) + size;
2304                         break;
2305                 }
2306         case SCTP_PEER_AUTH_CHUNKS:
2307                 {
2308                         struct sctp_authchunks *sac;
2309                         sctp_auth_chklist_t *chklist = NULL;
2310                         size_t size = 0;
2311
2312                         SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize);
2313                         SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id);
2314
2315                         if (stcb) {
2316                                 /* get off the assoc */
2317                                 chklist = stcb->asoc.peer_auth_chunks;
2318                                 /* is there enough space? */
2319                                 size = sctp_auth_get_chklist_size(chklist);
2320                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2321                                         error = EINVAL;
2322                                 } else {
2323                                         /* copy in the chunks */
2324                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2325                                 }
2326                                 SCTP_TCB_UNLOCK(stcb);
2327                         } else {
2328                                 error = ENOENT;
2329                         }
2330                         *optsize = sizeof(struct sctp_authchunks) + size;
2331                         break;
2332                 }
2333
2334
2335         default:
2336                 error = ENOPROTOOPT;
2337                 *optsize = 0;
2338                 break;
2339         }                       /* end switch (sopt->sopt_name) */
2340         return (error);
2341 }
2342
2343 static int
2344 sctp_setopt(struct socket *so, int optname, void *optval, size_t optsize,
2345     void *p)
2346 {
2347         int error, set_opt;
2348         uint32_t *mopt;
2349         struct sctp_tcb *stcb = NULL;
2350         struct sctp_inpcb *inp;
2351         uint32_t vrf_id;
2352
2353         if (optval == NULL) {
2354                 SCTP_PRINTF("optval is NULL\n");
2355                 return (EINVAL);
2356         }
2357         inp = (struct sctp_inpcb *)so->so_pcb;
2358         if (inp == 0) {
2359                 SCTP_PRINTF("inp is NULL?\n");
2360                 return EINVAL;
2361         }
2362         vrf_id = inp->def_vrf_id;
2363
2364         error = 0;
2365         switch (optname) {
2366         case SCTP_NODELAY:
2367         case SCTP_AUTOCLOSE:
2368         case SCTP_AUTO_ASCONF:
2369         case SCTP_EXPLICIT_EOR:
2370         case SCTP_DISABLE_FRAGMENTS:
2371         case SCTP_USE_EXT_RCVINFO:
2372         case SCTP_I_WANT_MAPPED_V4_ADDR:
2373                 /* copy in the option value */
2374                 SCTP_CHECK_AND_CAST(mopt, optval, uint32_t, optsize);
2375                 set_opt = 0;
2376                 if (error)
2377                         break;
2378                 switch (optname) {
2379                 case SCTP_DISABLE_FRAGMENTS:
2380                         set_opt = SCTP_PCB_FLAGS_NO_FRAGMENT;
2381                         break;
2382                 case SCTP_AUTO_ASCONF:
2383                         set_opt = SCTP_PCB_FLAGS_AUTO_ASCONF;
2384                         break;
2385                 case SCTP_EXPLICIT_EOR:
2386                         set_opt = SCTP_PCB_FLAGS_EXPLICIT_EOR;
2387                         break;
2388                 case SCTP_USE_EXT_RCVINFO:
2389                         set_opt = SCTP_PCB_FLAGS_EXT_RCVINFO;
2390                         break;
2391                 case SCTP_I_WANT_MAPPED_V4_ADDR:
2392                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2393                                 set_opt = SCTP_PCB_FLAGS_NEEDS_MAPPED_V4;
2394                         } else {
2395                                 return (EINVAL);
2396                         }
2397                         break;
2398                 case SCTP_NODELAY:
2399                         set_opt = SCTP_PCB_FLAGS_NODELAY;
2400                         break;
2401                 case SCTP_AUTOCLOSE:
2402                         set_opt = SCTP_PCB_FLAGS_AUTOCLOSE;
2403                         /*
2404                          * The value is in ticks. Note this does not effect
2405                          * old associations, only new ones.
2406                          */
2407                         inp->sctp_ep.auto_close_time = SEC_TO_TICKS(*mopt);
2408                         break;
2409                 }
2410                 SCTP_INP_WLOCK(inp);
2411                 if (*mopt != 0) {
2412                         sctp_feature_on(inp, set_opt);
2413                 } else {
2414                         sctp_feature_off(inp, set_opt);
2415                 }
2416                 SCTP_INP_WUNLOCK(inp);
2417                 break;
2418         case SCTP_PARTIAL_DELIVERY_POINT:
2419                 {
2420                         uint32_t *value;
2421
2422                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, optsize);
2423                         if (*value > SCTP_SB_LIMIT_RCV(so)) {
2424                                 error = EINVAL;
2425                                 break;
2426                         }
2427                         inp->partial_delivery_point = *value;
2428                 }
2429                 break;
2430         case SCTP_FRAGMENT_INTERLEAVE:
2431                 /* not yet until we re-write sctp_recvmsg() */
2432                 {
2433                         uint32_t *level;
2434
2435                         SCTP_CHECK_AND_CAST(level, optval, uint32_t, optsize);
2436                         if (*level == SCTP_FRAG_LEVEL_2) {
2437                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2438                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2439                         } else if (*level == SCTP_FRAG_LEVEL_1) {
2440                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2441                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2442                         } else if (*level == SCTP_FRAG_LEVEL_0) {
2443                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2444                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2445
2446                         } else {
2447                                 error = EINVAL;
2448                         }
2449                 }
2450                 break;
2451         case SCTP_CMT_ON_OFF:
2452                 {
2453                         struct sctp_assoc_value *av;
2454
2455                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2456                         if (sctp_cmt_on_off) {
2457                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2458                                 if (stcb) {
2459                                         stcb->asoc.sctp_cmt_on_off = (uint8_t) av->assoc_value;
2460                                         SCTP_TCB_UNLOCK(stcb);
2461                                 } else {
2462                                         error = ENOTCONN;
2463                                 }
2464                         } else {
2465                                 error = ENOPROTOOPT;
2466                         }
2467                 }
2468                 break;
2469         case SCTP_CLR_STAT_LOG:
2470 #ifdef SCTP_STAT_LOGGING
2471                 sctp_clr_stat_log();
2472 #else
2473                 error = EOPNOTSUPP;
2474 #endif
2475                 break;
2476         case SCTP_CONTEXT:
2477                 {
2478                         struct sctp_assoc_value *av;
2479
2480                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2481                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2482
2483                         if (stcb) {
2484                                 stcb->asoc.context = av->assoc_value;
2485                                 SCTP_TCB_UNLOCK(stcb);
2486                         } else {
2487                                 SCTP_INP_WLOCK(inp);
2488                                 inp->sctp_context = av->assoc_value;
2489                                 SCTP_INP_WUNLOCK(inp);
2490                         }
2491                 }
2492                 break;
2493         case SCTP_VRF_ID:
2494                 {
2495                         uint32_t *vrf_id;
2496
2497                         SCTP_CHECK_AND_CAST(vrf_id, optval, uint32_t, optsize);
2498                         if (*vrf_id > SCTP_MAX_VRF_ID) {
2499                                 error = EINVAL;
2500                                 break;
2501                         }
2502                         inp->def_vrf_id = *vrf_id;
2503                         break;
2504                 }
2505         case SCTP_DEL_VRF_ID:
2506                 {
2507                         error = EOPNOTSUPP;
2508                         break;
2509                 }
2510         case SCTP_ADD_VRF_ID:
2511                 {
2512                         error = EOPNOTSUPP;
2513                         break;
2514                 }
2515
2516         case SCTP_DELAYED_ACK_TIME:
2517                 {
2518                         struct sctp_assoc_value *tm;
2519
2520                         SCTP_CHECK_AND_CAST(tm, optval, struct sctp_assoc_value, optsize);
2521                         SCTP_FIND_STCB(inp, stcb, tm->assoc_id);
2522
2523                         if (stcb) {
2524                                 stcb->asoc.delayed_ack = tm->assoc_value;
2525                                 SCTP_TCB_UNLOCK(stcb);
2526                         } else {
2527                                 SCTP_INP_WLOCK(inp);
2528                                 inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(tm->assoc_value);
2529                                 SCTP_INP_WUNLOCK(inp);
2530                         }
2531                         break;
2532                 }
2533         case SCTP_AUTH_CHUNK:
2534                 {
2535                         struct sctp_authchunk *sauth;
2536
2537                         SCTP_CHECK_AND_CAST(sauth, optval, struct sctp_authchunk, optsize);
2538
2539                         SCTP_INP_WLOCK(inp);
2540                         if (sctp_auth_add_chunk(sauth->sauth_chunk, inp->sctp_ep.local_auth_chunks))
2541                                 error = EINVAL;
2542                         SCTP_INP_WUNLOCK(inp);
2543                         break;
2544                 }
2545         case SCTP_AUTH_KEY:
2546                 {
2547                         struct sctp_authkey *sca;
2548                         struct sctp_keyhead *shared_keys;
2549                         sctp_sharedkey_t *shared_key;
2550                         sctp_key_t *key = NULL;
2551                         size_t size;
2552
2553                         SCTP_CHECK_AND_CAST(sca, optval, struct sctp_authkey, optsize);
2554                         SCTP_FIND_STCB(inp, stcb, sca->sca_assoc_id);
2555                         size = optsize - sizeof(*sca);
2556
2557                         if (stcb) {
2558                                 /* set it on the assoc */
2559                                 shared_keys = &stcb->asoc.shared_keys;
2560                                 /* clear the cached keys for this key id */
2561                                 sctp_clear_cachedkeys(stcb, sca->sca_keynumber);
2562                                 /*
2563                                  * create the new shared key and
2564                                  * insert/replace it
2565                                  */
2566                                 if (size > 0) {
2567                                         key = sctp_set_key(sca->sca_key, (uint32_t) size);
2568                                         if (key == NULL) {
2569                                                 error = ENOMEM;
2570                                                 SCTP_TCB_UNLOCK(stcb);
2571                                                 break;
2572                                         }
2573                                 }
2574                                 shared_key = sctp_alloc_sharedkey();
2575                                 if (shared_key == NULL) {
2576                                         sctp_free_key(key);
2577                                         error = ENOMEM;
2578                                         SCTP_TCB_UNLOCK(stcb);
2579                                         break;
2580                                 }
2581                                 shared_key->key = key;
2582                                 shared_key->keyid = sca->sca_keynumber;
2583                                 sctp_insert_sharedkey(shared_keys, shared_key);
2584                                 SCTP_TCB_UNLOCK(stcb);
2585                         } else {
2586                                 /* set it on the endpoint */
2587                                 SCTP_INP_WLOCK(inp);
2588                                 shared_keys = &inp->sctp_ep.shared_keys;
2589                                 /*
2590                                  * clear the cached keys on all assocs for
2591                                  * this key id
2592                                  */
2593                                 sctp_clear_cachedkeys_ep(inp, sca->sca_keynumber);
2594                                 /*
2595                                  * create the new shared key and
2596                                  * insert/replace it
2597                                  */
2598                                 if (size > 0) {
2599                                         key = sctp_set_key(sca->sca_key, (uint32_t) size);
2600                                         if (key == NULL) {
2601                                                 error = ENOMEM;
2602                                                 SCTP_INP_WUNLOCK(inp);
2603                                                 break;
2604                                         }
2605                                 }
2606                                 shared_key = sctp_alloc_sharedkey();
2607                                 if (shared_key == NULL) {
2608                                         sctp_free_key(key);
2609                                         error = ENOMEM;
2610                                         SCTP_INP_WUNLOCK(inp);
2611                                         break;
2612                                 }
2613                                 shared_key->key = key;
2614                                 shared_key->keyid = sca->sca_keynumber;
2615                                 sctp_insert_sharedkey(shared_keys, shared_key);
2616                                 SCTP_INP_WUNLOCK(inp);
2617                         }
2618                         break;
2619                 }
2620         case SCTP_HMAC_IDENT:
2621                 {
2622                         struct sctp_hmacalgo *shmac;
2623                         sctp_hmaclist_t *hmaclist;
2624                         uint32_t hmacid;
2625                         size_t size, i;
2626
2627                         SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, optsize);
2628                         size = (optsize - sizeof(*shmac)) / sizeof(shmac->shmac_idents[0]);
2629                         hmaclist = sctp_alloc_hmaclist(size);
2630                         if (hmaclist == NULL) {
2631                                 error = ENOMEM;
2632                                 break;
2633                         }
2634                         for (i = 0; i < size; i++) {
2635                                 hmacid = shmac->shmac_idents[i];
2636                                 if (sctp_auth_add_hmacid(hmaclist, (uint16_t) hmacid)) {
2637                                          /* invalid HMACs were found */ ;
2638                                         error = EINVAL;
2639                                         sctp_free_hmaclist(hmaclist);
2640                                         goto sctp_set_hmac_done;
2641                                 }
2642                         }
2643                         /* set it on the endpoint */
2644                         SCTP_INP_WLOCK(inp);
2645                         if (inp->sctp_ep.local_hmacs)
2646                                 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
2647                         inp->sctp_ep.local_hmacs = hmaclist;
2648                         SCTP_INP_WUNLOCK(inp);
2649         sctp_set_hmac_done:
2650                         break;
2651                 }
2652         case SCTP_AUTH_ACTIVE_KEY:
2653                 {
2654                         struct sctp_authkeyid *scact;
2655
2656                         SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, optsize);
2657                         SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id);
2658
2659                         /* set the active key on the right place */
2660                         if (stcb) {
2661                                 /* set the active key on the assoc */
2662                                 if (sctp_auth_setactivekey(stcb, scact->scact_keynumber))
2663                                         error = EINVAL;
2664                                 SCTP_TCB_UNLOCK(stcb);
2665                         } else {
2666                                 /* set the active key on the endpoint */
2667                                 SCTP_INP_WLOCK(inp);
2668                                 if (sctp_auth_setactivekey_ep(inp, scact->scact_keynumber))
2669                                         error = EINVAL;
2670                                 SCTP_INP_WUNLOCK(inp);
2671                         }
2672                         break;
2673                 }
2674         case SCTP_AUTH_DELETE_KEY:
2675                 {
2676                         struct sctp_authkeyid *scdel;
2677
2678                         SCTP_CHECK_AND_CAST(scdel, optval, struct sctp_authkeyid, optsize);
2679                         SCTP_FIND_STCB(inp, stcb, scdel->scact_assoc_id);
2680
2681                         /* delete the key from the right place */
2682                         if (stcb) {
2683                                 if (sctp_delete_sharedkey(stcb, scdel->scact_keynumber))
2684                                         error = EINVAL;
2685                                 SCTP_TCB_UNLOCK(stcb);
2686                         } else {
2687                                 SCTP_INP_WLOCK(inp);
2688                                 if (sctp_delete_sharedkey_ep(inp, scdel->scact_keynumber))
2689                                         error = EINVAL;
2690                                 SCTP_INP_WUNLOCK(inp);
2691                         }
2692                         break;
2693                 }
2694
2695         case SCTP_RESET_STREAMS:
2696                 {
2697                         struct sctp_stream_reset *strrst;
2698                         uint8_t send_in = 0, send_tsn = 0, send_out = 0;
2699                         int i;
2700
2701                         SCTP_CHECK_AND_CAST(strrst, optval, struct sctp_stream_reset, optsize);
2702                         SCTP_FIND_STCB(inp, stcb, strrst->strrst_assoc_id);
2703
2704                         if (stcb == NULL) {
2705                                 error = ENOENT;
2706                                 break;
2707                         }
2708                         if (stcb->asoc.peer_supports_strreset == 0) {
2709                                 /*
2710                                  * Peer does not support it, we return
2711                                  * protocol not supported since this is true
2712                                  * for this feature and this peer, not the
2713                                  * socket request in general.
2714                                  */
2715                                 error = EPROTONOSUPPORT;
2716                                 SCTP_TCB_UNLOCK(stcb);
2717                                 break;
2718                         }
2719                         if (stcb->asoc.stream_reset_outstanding) {
2720                                 error = EALREADY;
2721                                 SCTP_TCB_UNLOCK(stcb);
2722                                 break;
2723                         }
2724                         if (strrst->strrst_flags == SCTP_RESET_LOCAL_RECV) {
2725                                 send_in = 1;
2726                         } else if (strrst->strrst_flags == SCTP_RESET_LOCAL_SEND) {
2727                                 send_out = 1;
2728                         } else if (strrst->strrst_flags == SCTP_RESET_BOTH) {
2729                                 send_in = 1;
2730                                 send_out = 1;
2731                         } else if (strrst->strrst_flags == SCTP_RESET_TSN) {
2732                                 send_tsn = 1;
2733                         } else {
2734                                 error = EINVAL;
2735                                 SCTP_TCB_UNLOCK(stcb);
2736                                 break;
2737                         }
2738                         for (i = 0; i < strrst->strrst_num_streams; i++) {
2739                                 if ((send_in) &&
2740
2741                                     (strrst->strrst_list[i] > stcb->asoc.streamincnt)) {
2742                                         error = EINVAL;
2743                                         goto get_out;
2744                                 }
2745                                 if ((send_out) &&
2746                                     (strrst->strrst_list[i] > stcb->asoc.streamoutcnt)) {
2747                                         error = EINVAL;
2748                                         goto get_out;
2749                                 }
2750                         }
2751                         if (error) {
2752                 get_out:
2753                                 SCTP_TCB_UNLOCK(stcb);
2754                                 break;
2755                         }
2756                         error = sctp_send_str_reset_req(stcb, strrst->strrst_num_streams,
2757                             strrst->strrst_list,
2758                             send_out, (stcb->asoc.str_reset_seq_in - 3),
2759                             send_in, send_tsn);
2760
2761                         sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_REQ);
2762                         SCTP_TCB_UNLOCK(stcb);
2763                 }
2764                 break;
2765
2766         case SCTP_CONNECT_X:
2767                 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) {
2768                         error = EINVAL;
2769                         break;
2770                 }
2771                 error = sctp_do_connect_x(so, inp, optval, optsize, p, 0);
2772                 break;
2773
2774         case SCTP_CONNECT_X_DELAYED:
2775                 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) {
2776                         error = EINVAL;
2777                         break;
2778                 }
2779                 error = sctp_do_connect_x(so, inp, optval, optsize, p, 1);
2780                 break;
2781
2782         case SCTP_CONNECT_X_COMPLETE:
2783                 {
2784                         struct sockaddr *sa;
2785                         struct sctp_nets *net;
2786
2787                         /* FIXME MT: check correct? */
2788                         SCTP_CHECK_AND_CAST(sa, optval, struct sockaddr, optsize);
2789
2790                         /* find tcb */
2791                         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
2792                                 SCTP_INP_RLOCK(inp);
2793                                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
2794                                 if (stcb) {
2795                                         SCTP_TCB_LOCK(stcb);
2796                                         net = sctp_findnet(stcb, sa);
2797                                 }
2798                                 SCTP_INP_RUNLOCK(inp);
2799                         } else {
2800                                 /*
2801                                  * We increment here since
2802                                  * sctp_findassociation_ep_addr() wil do a
2803                                  * decrement if it finds the stcb as long as
2804                                  * the locked tcb (last argument) is NOT a
2805                                  * TCB.. aka NULL.
2806                                  */
2807                                 SCTP_INP_INCR_REF(inp);
2808                                 stcb = sctp_findassociation_ep_addr(&inp, sa, &net, NULL, NULL);
2809                                 if (stcb == NULL) {
2810                                         SCTP_INP_DECR_REF(inp);
2811                                 }
2812                         }
2813
2814                         if (stcb == NULL) {
2815                                 error = ENOENT;
2816                                 break;
2817                         }
2818                         if (stcb->asoc.delayed_connection == 1) {
2819                                 stcb->asoc.delayed_connection = 0;
2820                                 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
2821                                 sctp_timer_stop(SCTP_TIMER_TYPE_INIT, inp, stcb,
2822                                     stcb->asoc.primary_destination,
2823                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_9);
2824                                 sctp_send_initiate(inp, stcb);
2825                         } else {
2826                                 /*
2827                                  * already expired or did not use delayed
2828                                  * connectx
2829                                  */
2830                                 error = EALREADY;
2831                         }
2832                         SCTP_TCB_UNLOCK(stcb);
2833                 }
2834                 break;
2835         case SCTP_MAXBURST:
2836                 {
2837                         uint8_t *burst;
2838
2839                         SCTP_CHECK_AND_CAST(burst, optval, uint8_t, optsize);
2840
2841                         SCTP_INP_WLOCK(inp);
2842                         if (*burst) {
2843                                 inp->sctp_ep.max_burst = *burst;
2844                         }
2845                         SCTP_INP_WUNLOCK(inp);
2846                 }
2847                 break;
2848         case SCTP_MAXSEG:
2849                 {
2850                         struct sctp_assoc_value *av;
2851                         int ovh;
2852
2853                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2854                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2855
2856                         if (stcb) {
2857                                 error = EINVAL;
2858                                 SCTP_TCB_UNLOCK(stcb);
2859                         } else {
2860                                 SCTP_INP_WLOCK(inp);
2861                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2862                                         ovh = SCTP_MED_OVERHEAD;
2863                                 } else {
2864                                         ovh = SCTP_MED_V4_OVERHEAD;
2865                                 }
2866                                 /*
2867                                  * FIXME MT: I think this is not in tune
2868                                  * with the API ID
2869                                  */
2870                                 if (av->assoc_value) {
2871                                         inp->sctp_frag_point = (av->assoc_value + ovh);
2872                                 } else {
2873                                         error = EINVAL;
2874                                 }
2875                                 SCTP_INP_WUNLOCK(inp);
2876                         }
2877                 }
2878                 break;
2879         case SCTP_EVENTS:
2880                 {
2881                         struct sctp_event_subscribe *events;
2882
2883                         SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, optsize);
2884
2885                         SCTP_INP_WLOCK(inp);
2886                         if (events->sctp_data_io_event) {
2887                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
2888                         } else {
2889                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
2890                         }
2891
2892                         if (events->sctp_association_event) {
2893                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
2894                         } else {
2895                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
2896                         }
2897
2898                         if (events->sctp_address_event) {
2899                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
2900                         } else {
2901                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
2902                         }
2903
2904                         if (events->sctp_send_failure_event) {
2905                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
2906                         } else {
2907                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
2908                         }
2909
2910                         if (events->sctp_peer_error_event) {
2911                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR);
2912                         } else {
2913                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPEERERR);
2914                         }
2915
2916                         if (events->sctp_shutdown_event) {
2917                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
2918                         } else {
2919                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
2920                         }
2921
2922                         if (events->sctp_partial_delivery_event) {
2923                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
2924                         } else {
2925                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
2926                         }
2927
2928                         if (events->sctp_adaptation_layer_event) {
2929                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
2930                         } else {
2931                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
2932                         }
2933
2934                         if (events->sctp_authentication_event) {
2935                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT);
2936                         } else {
2937                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTHEVNT);
2938                         }
2939
2940                         if (events->sctp_stream_reset_events) {
2941                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
2942                         } else {
2943                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
2944                         }
2945                         SCTP_INP_WUNLOCK(inp);
2946                 }
2947                 break;
2948
2949         case SCTP_ADAPTATION_LAYER:
2950                 {
2951                         struct sctp_setadaptation *adap_bits;
2952
2953                         SCTP_CHECK_AND_CAST(adap_bits, optval, struct sctp_setadaptation, optsize);
2954                         SCTP_INP_WLOCK(inp);
2955                         inp->sctp_ep.adaptation_layer_indicator = adap_bits->ssb_adaptation_ind;
2956                         SCTP_INP_WUNLOCK(inp);
2957                 }
2958                 break;
2959 #ifdef SCTP_DEBUG
2960         case SCTP_SET_INITIAL_DBG_SEQ:
2961                 {
2962                         uint32_t *vvv;
2963
2964                         SCTP_CHECK_AND_CAST(vvv, optval, uint32_t, optsize);
2965                         SCTP_INP_WLOCK(inp);
2966                         inp->sctp_ep.initial_sequence_debug = *vvv;
2967                         SCTP_INP_WUNLOCK(inp);
2968                 }
2969                 break;
2970 #endif
2971         case SCTP_DEFAULT_SEND_PARAM:
2972                 {
2973                         struct sctp_sndrcvinfo *s_info;
2974
2975                         SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, optsize);
2976                         SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id);
2977
2978                         if (stcb) {
2979                                 if (s_info->sinfo_stream <= stcb->asoc.streamoutcnt) {
2980                                         stcb->asoc.def_send = *s_info;
2981                                 } else {
2982                                         error = EINVAL;
2983                                 }
2984                                 SCTP_TCB_UNLOCK(stcb);
2985                         } else {
2986                                 SCTP_INP_WLOCK(inp);
2987                                 inp->def_send = *s_info;
2988                                 SCTP_INP_WUNLOCK(inp);
2989                         }
2990                 }
2991                 break;
2992         case SCTP_PEER_ADDR_PARAMS:
2993                 /* Applys to the specific association */
2994                 {
2995                         struct sctp_paddrparams *paddrp;
2996                         struct sctp_nets *net;
2997
2998                         SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, optsize);
2999                         SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id);
3000                         net = NULL;
3001                         if (stcb) {
3002                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address);
3003                         } else {
3004                                 /*
3005                                  * We increment here since
3006                                  * sctp_findassociation_ep_addr() wil do a
3007                                  * decrement if it finds the stcb as long as
3008                                  * the locked tcb (last argument) is NOT a
3009                                  * TCB.. aka NULL.
3010                                  */
3011                                 SCTP_INP_INCR_REF(inp);
3012                                 stcb = sctp_findassociation_ep_addr(&inp,
3013                                     (struct sockaddr *)&paddrp->spp_address,
3014                                     &net, NULL, NULL);
3015                                 if (stcb == NULL) {
3016                                         SCTP_INP_DECR_REF(inp);
3017                                 }
3018                         }
3019
3020
3021                         if (stcb) {
3022                                 /************************TCB SPECIFIC SET ******************/
3023                                 /*
3024                                  * do we change the timer for HB, we run
3025                                  * only one?
3026                                  */
3027                                 if (paddrp->spp_hbinterval)
3028                                         stcb->asoc.heart_beat_delay = paddrp->spp_hbinterval;
3029                                 else if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO)
3030                                         stcb->asoc.heart_beat_delay = 0;
3031
3032                                 /* network sets ? */
3033                                 if (net) {
3034                                         /************************NET SPECIFIC SET ******************/
3035                                         if (paddrp->spp_flags & SPP_HB_DEMAND) {
3036                                                 /* on demand HB */
3037                                                 (void)sctp_send_hb(stcb, 1, net);
3038                                         }
3039                                         if (paddrp->spp_flags & SPP_HB_DISABLE) {
3040                                                 net->dest_state |= SCTP_ADDR_NOHB;
3041                                         }
3042                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3043                                                 net->dest_state &= ~SCTP_ADDR_NOHB;
3044                                         }
3045                                         if (paddrp->spp_flags & SPP_PMTUD_DISABLE) {
3046                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3047                                                         sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
3048                                                             SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10);
3049                                                 }
3050                                                 if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) {
3051                                                         net->mtu = paddrp->spp_pathmtu;
3052                                                         if (net->mtu < stcb->asoc.smallest_mtu) {
3053 #ifdef SCTP_PRINT_FOR_B_AND_M
3054                                                                 SCTP_PRINTF("SCTP_PMTU_DISABLE calls sctp_pathmtu_adjustment:%d\n",
3055                                                                     net->mtu);
3056 #endif
3057                                                                 sctp_pathmtu_adjustment(inp, stcb, net, net->mtu);
3058                                                         }
3059                                                 }
3060                                         }
3061                                         if (paddrp->spp_flags & SPP_PMTUD_ENABLE) {
3062                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3063                                                         sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
3064                                                 }
3065                                         }
3066                                         if (paddrp->spp_pathmaxrxt)
3067                                                 net->failure_threshold = paddrp->spp_pathmaxrxt;
3068 #ifdef INET
3069                                         if (paddrp->spp_flags & SPP_IPV4_TOS) {
3070                                                 if (net->ro._l_addr.sin.sin_family == AF_INET) {
3071                                                         net->tos_flowlabel = paddrp->spp_ipv4_tos & 0x000000fc;
3072                                                 }
3073                                         }
3074 #endif
3075 #ifdef INET6
3076                                         if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL) {
3077                                                 if (net->ro._l_addr.sin6.sin6_family == AF_INET6) {
3078                                                         net->tos_flowlabel = paddrp->spp_ipv6_flowlabel;
3079                                                 }
3080                                         }
3081 #endif
3082                                 } else {
3083                                         /************************ASSOC ONLY -- NO NET SPECIFIC SET ******************/
3084                                         if (paddrp->spp_pathmaxrxt)
3085                                                 stcb->asoc.def_net_failure = paddrp->spp_pathmaxrxt;
3086
3087                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3088                                                 /* Turn back on the timer */
3089                                                 stcb->asoc.hb_is_disabled = 0;
3090                                                 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
3091                                         }
3092                                         if (paddrp->spp_flags & SPP_HB_DISABLE) {
3093                                                 int cnt_of_unconf = 0;
3094                                                 struct sctp_nets *lnet;
3095
3096                                                 stcb->asoc.hb_is_disabled = 1;
3097                                                 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
3098                                                         if (lnet->dest_state & SCTP_ADDR_UNCONFIRMED) {
3099                                                                 cnt_of_unconf++;
3100                                                         }
3101                                                 }
3102                                                 /*
3103                                                  * stop the timer ONLY if we
3104                                                  * have no unconfirmed
3105                                                  * addresses
3106                                                  */
3107                                                 if (cnt_of_unconf == 0) {
3108                                                         sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_11);
3109                                                 }
3110                                         }
3111                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3112                                                 /* start up the timer. */
3113                                                 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
3114                                         }
3115 #ifdef INET
3116                                         if (paddrp->spp_flags & SPP_IPV4_TOS)
3117                                                 stcb->asoc.default_tos = paddrp->spp_ipv4_tos & 0x000000fc;
3118 #endif
3119 #ifdef INET6
3120                                         if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL)
3121                                                 stcb->asoc.default_flowlabel = paddrp->spp_ipv6_flowlabel;
3122 #endif
3123
3124                                 }
3125                                 SCTP_TCB_UNLOCK(stcb);
3126                         } else {
3127                                 /************************NO TCB, SET TO default stuff ******************/
3128                                 SCTP_INP_WLOCK(inp);
3129                                 /*
3130                                  * For the TOS/FLOWLABEL stuff you set it
3131                                  * with the options on the socket
3132                                  */
3133                                 if (paddrp->spp_pathmaxrxt) {
3134                                         inp->sctp_ep.def_net_failure = paddrp->spp_pathmaxrxt;
3135                                 }
3136                                 if (paddrp->spp_flags & SPP_HB_ENABLE) {
3137                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(paddrp->spp_hbinterval);
3138                                         sctp_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
3139                                 } else if (paddrp->spp_flags & SPP_HB_DISABLE) {
3140                                         sctp_feature_on(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
3141                                 }
3142                                 SCTP_INP_WUNLOCK(inp);
3143                         }
3144                 }
3145                 break;
3146         case SCTP_RTOINFO:
3147                 {
3148                         struct sctp_rtoinfo *srto;
3149
3150                         SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, optsize);
3151                         SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id);
3152
3153                         if (stcb) {
3154                                 /* Set in ms we hope :-) */
3155                                 if (srto->srto_initial)
3156                                         stcb->asoc.initial_rto = srto->srto_initial;
3157                                 if (srto->srto_max)
3158                                         stcb->asoc.maxrto = srto->srto_max;
3159                                 if (srto->srto_min)
3160                                         stcb->asoc.minrto = srto->srto_min;
3161                                 SCTP_TCB_UNLOCK(stcb);
3162                         } else {
3163                                 SCTP_INP_WLOCK(inp);
3164                                 /*
3165                                  * If we have a null asoc, its default for
3166                                  * the endpoint
3167                                  */
3168                                 if (srto->srto_initial)
3169                                         inp->sctp_ep.initial_rto = srto->srto_initial;
3170                                 if (srto->srto_max)
3171                                         inp->sctp_ep.sctp_maxrto = srto->srto_max;
3172                                 if (srto->srto_min)
3173                                         inp->sctp_ep.sctp_minrto = srto->srto_min;
3174                                 SCTP_INP_WUNLOCK(inp);
3175                         }
3176                 }
3177                 break;
3178         case SCTP_ASSOCINFO:
3179                 {
3180                         struct sctp_assocparams *sasoc;
3181
3182                         SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, optsize);
3183                         SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id);
3184
3185                         if (stcb) {
3186                                 if (sasoc->sasoc_asocmaxrxt)
3187                                         stcb->asoc.max_send_times = sasoc->sasoc_asocmaxrxt;
3188                                 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets;
3189                                 sasoc->sasoc_peer_rwnd = 0;
3190                                 sasoc->sasoc_local_rwnd = 0;
3191                                 if (stcb->asoc.cookie_life)
3192                                         stcb->asoc.cookie_life = sasoc->sasoc_cookie_life;
3193                                 stcb->asoc.delayed_ack = sasoc->sasoc_sack_delay;
3194                                 if (sasoc->sasoc_sack_freq) {
3195                                         stcb->asoc.sack_freq = sasoc->sasoc_sack_freq;
3196                                 }
3197                                 SCTP_TCB_UNLOCK(stcb);
3198                         } else {
3199                                 SCTP_INP_WLOCK(inp);
3200                                 if (sasoc->sasoc_asocmaxrxt)
3201                                         inp->sctp_ep.max_send_times = sasoc->sasoc_asocmaxrxt;
3202                                 sasoc->sasoc_number_peer_destinations = 0;
3203                                 sasoc->sasoc_peer_rwnd = 0;
3204                                 sasoc->sasoc_local_rwnd = 0;
3205                                 if (sasoc->sasoc_cookie_life)
3206                                         inp->sctp_ep.def_cookie_life = sasoc->sasoc_cookie_life;
3207                                 inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(sasoc->sasoc_sack_delay);
3208                                 if (sasoc->sasoc_sack_freq) {
3209                                         inp->sctp_ep.sctp_sack_freq = sasoc->sasoc_sack_freq;
3210                                 }
3211                                 SCTP_INP_WUNLOCK(inp);
3212                         }
3213                 }
3214                 break;
3215         case SCTP_INITMSG:
3216                 {
3217                         struct sctp_initmsg *sinit;
3218
3219                         SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, optsize);
3220                         SCTP_INP_WLOCK(inp);
3221                         if (sinit->sinit_num_ostreams)
3222                                 inp->sctp_ep.pre_open_stream_count = sinit->sinit_num_ostreams;
3223
3224                         if (sinit->sinit_max_instreams)
3225                                 inp->sctp_ep.max_open_streams_intome = sinit->sinit_max_instreams;
3226
3227                         if (sinit->sinit_max_attempts)
3228                                 inp->sctp_ep.max_init_times = sinit->sinit_max_attempts;
3229
3230                         if (sinit->sinit_max_init_timeo)
3231                                 inp->sctp_ep.initial_init_rto_max = sinit->sinit_max_init_timeo;
3232                         SCTP_INP_WUNLOCK(inp);
3233                 }
3234                 break;
3235         case SCTP_PRIMARY_ADDR:
3236                 {
3237                         struct sctp_setprim *spa;
3238                         struct sctp_nets *net, *lnet;
3239
3240                         SCTP_CHECK_AND_CAST(spa, optval, struct sctp_setprim, optsize);
3241                         SCTP_FIND_STCB(inp, stcb, spa->ssp_assoc_id);
3242
3243                         net = NULL;
3244                         if (stcb) {
3245                                 net = sctp_findnet(stcb, (struct sockaddr *)&spa->ssp_addr);
3246                         } else {
3247                                 /*
3248                                  * We increment here since
3249                                  * sctp_findassociation_ep_addr() wil do a
3250                                  * decrement if it finds the stcb as long as
3251                                  * the locked tcb (last argument) is NOT a
3252                                  * TCB.. aka NULL.
3253                                  */
3254                                 SCTP_INP_INCR_REF(inp);
3255                                 stcb = sctp_findassociation_ep_addr(&inp,
3256                                     (struct sockaddr *)&spa->ssp_addr,
3257                                     &net, NULL, NULL);
3258                                 if (stcb == NULL) {
3259                                         SCTP_INP_DECR_REF(inp);
3260                                 }
3261                         }
3262
3263                         if ((stcb) && (net)) {
3264                                 if ((net != stcb->asoc.primary_destination) &&
3265                                     (!(net->dest_state & SCTP_ADDR_UNCONFIRMED))) {
3266                                         /* Ok we need to set it */
3267                                         lnet = stcb->asoc.primary_destination;
3268                                         if (sctp_set_primary_addr(stcb, (struct sockaddr *)NULL, net) == 0) {
3269                                                 if (net->dest_state & SCTP_ADDR_SWITCH_PRIMARY) {
3270                                                         net->dest_state |= SCTP_ADDR_DOUBLE_SWITCH;
3271                                                 }
3272                                                 net->dest_state |= SCTP_ADDR_SWITCH_PRIMARY;
3273                                         }
3274                                 }
3275                         } else {
3276                                 error = EINVAL;
3277                         }
3278                         if (stcb) {
3279                                 SCTP_TCB_UNLOCK(stcb);
3280                         }
3281                 }
3282                 break;
3283         case SCTP_SET_DYNAMIC_PRIMARY:
3284                 {
3285                         union sctp_sockstore *ss;
3286
3287                         error = priv_check_cred(curthread->td_ucred,
3288                             PRIV_NETINET_RESERVEDPORT,
3289                             SUSER_ALLOWJAIL);
3290                         if (error)
3291                                 break;
3292
3293                         SCTP_CHECK_AND_CAST(ss, optval, union sctp_sockstore, optsize);
3294                         /* SUPER USER CHECK? */
3295                         error = sctp_dynamic_set_primary(&ss->sa, vrf_id);
3296                 }
3297                 break;
3298         case SCTP_SET_PEER_PRIMARY_ADDR:
3299                 {
3300                         struct sctp_setpeerprim *sspp;
3301
3302                         SCTP_CHECK_AND_CAST(sspp, optval, struct sctp_setpeerprim, optsize);
3303                         SCTP_FIND_STCB(inp, stcb, sspp->sspp_assoc_id);
3304                         if (stcb != NULL) {
3305                                 if (sctp_set_primary_ip_address_sa(stcb, (struct sockaddr *)&sspp->sspp_addr) != 0) {
3306                                         error = EINVAL;
3307                                 }
3308                                 SCTP_TCB_UNLOCK(stcb);
3309                         } else {
3310                                 error = EINVAL;
3311                         }
3312
3313                 }
3314                 break;
3315         case SCTP_BINDX_ADD_ADDR:
3316                 {
3317                         struct sctp_getaddresses *addrs;
3318                         struct sockaddr *addr_touse;
3319                         struct sockaddr_in sin;
3320
3321                         SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses, optsize);
3322
3323                         /* see if we're bound all already! */
3324                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
3325                                 error = EINVAL;
3326                                 break;
3327                         }
3328                         /* Is the VRF one we have */
3329                         addr_touse = addrs->addr;
3330 #if defined(INET6)
3331                         if (addrs->addr->sa_family == AF_INET6) {
3332                                 struct sockaddr_in6 *sin6;
3333
3334                                 sin6 = (struct sockaddr_in6 *)addr_touse;
3335                                 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
3336                                         in6_sin6_2_sin(&sin, sin6);
3337                                         addr_touse = (struct sockaddr *)&sin;
3338                                 }
3339                         }
3340 #endif
3341                         if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
3342                                 if (p == NULL) {
3343                                         /* Can't get proc for Net/Open BSD */
3344                                         error = EINVAL;
3345                                         break;
3346                                 }
3347                                 error = sctp_inpcb_bind(so, addr_touse, p);
3348                                 break;
3349                         }
3350                         /*
3351                          * No locks required here since bind and mgmt_ep_sa
3352                          * all do their own locking. If we do something for
3353                          * the FIX: below we may need to lock in that case.
3354                          */
3355                         if (addrs->sget_assoc_id == 0) {
3356                                 /* add the address */
3357                                 struct sctp_inpcb *lep;
3358
3359                                 ((struct sockaddr_in *)addr_touse)->sin_port = inp->sctp_lport;
3360                                 lep = sctp_pcb_findep(addr_touse, 1, 0, vrf_id);
3361                                 if (lep != NULL) {
3362                                         /*
3363                                          * We must decrement the refcount
3364                                          * since we have the ep already and
3365                                          * are binding. No remove going on
3366                                          * here.
3367                                          */
3368                                         SCTP_INP_DECR_REF(inp);
3369                                 }
3370                                 if (lep == inp) {
3371                                         /* already bound to it.. ok */
3372                                         break;
3373                                 } else if (lep == NULL) {
3374                                         ((struct sockaddr_in *)addr_touse)->sin_port = 0;
3375                                         error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
3376                                             SCTP_ADD_IP_ADDRESS, vrf_id);
3377                                 } else {
3378                                         error = EADDRNOTAVAIL;
3379                                 }
3380                                 if (error)
3381                                         break;
3382
3383                         } else {
3384                                 /*
3385                                  * FIX: decide whether we allow assoc based
3386                                  * bindx
3387                                  */
3388                         }
3389                 }
3390                 break;
3391         case SCTP_BINDX_REM_ADDR:
3392                 {
3393                         struct sctp_getaddresses *addrs;
3394                         struct sockaddr *addr_touse;
3395                         struct sockaddr_in sin;
3396
3397                         SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses, optsize);
3398                         /* see if we're bound all already! */
3399                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
3400                                 error = EINVAL;
3401                                 break;
3402                         }
3403                         addr_touse = addrs->addr;
3404 #if defined(INET6)
3405                         if (addrs->addr->sa_family == AF_INET6) {
3406                                 struct sockaddr_in6 *sin6;
3407
3408                                 sin6 = (struct sockaddr_in6 *)addr_touse;
3409                                 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
3410                                         in6_sin6_2_sin(&sin, sin6);
3411                                         addr_touse = (struct sockaddr *)&sin;
3412                                 }
3413                         }
3414 #endif
3415                         /*
3416                          * No lock required mgmt_ep_sa does its own locking.
3417                          * If the FIX: below is ever changed we may need to
3418                          * lock before calling association level binding.
3419                          */
3420                         if (addrs->sget_assoc_id == 0) {
3421                                 /* delete the address */
3422                                 (void)sctp_addr_mgmt_ep_sa(inp, addr_touse,
3423                                     SCTP_DEL_IP_ADDRESS, vrf_id);
3424                         } else {
3425                                 /*
3426                                  * FIX: decide whether we allow assoc based
3427                                  * bindx
3428                                  */
3429                         }
3430                 }
3431                 break;
3432         default:
3433                 error = ENOPROTOOPT;
3434                 break;
3435         }                       /* end switch (opt) */
3436         return (error);
3437 }
3438
3439
3440 int
3441 sctp_ctloutput(struct socket *so, struct sockopt *sopt)
3442 {
3443         void *optval = NULL;
3444         size_t optsize = 0;
3445         struct sctp_inpcb *inp;
3446         void *p;
3447         int error = 0;
3448
3449         inp = (struct sctp_inpcb *)so->so_pcb;
3450         if (inp == 0) {
3451                 /* I made the same as TCP since we are not setup? */
3452                 return (ECONNRESET);
3453         }
3454         if (sopt->sopt_level != IPPROTO_SCTP) {
3455                 /* wrong proto level... send back up to IP */
3456 #ifdef INET6
3457                 if (INP_CHECK_SOCKAF(so, AF_INET6))
3458                         error = ip6_ctloutput(so, sopt);
3459                 else
3460 #endif                          /* INET6 */
3461                         error = ip_ctloutput(so, sopt);
3462                 return (error);
3463         }
3464         optsize = sopt->sopt_valsize;
3465         if (optsize) {
3466                 SCTP_MALLOC(optval, void *, optsize, "SCTPSockOpt");
3467                 if (optval == NULL) {
3468                         return (ENOBUFS);
3469                 }
3470                 error = sooptcopyin(sopt, optval, optsize, optsize);
3471                 if (error) {
3472                         SCTP_FREE(optval);
3473                         goto out;
3474                 }
3475         }
3476         p = (void *)sopt->sopt_td;
3477         if (sopt->sopt_dir == SOPT_SET) {
3478                 error = sctp_setopt(so, sopt->sopt_name, optval, optsize, p);
3479         } else if (sopt->sopt_dir == SOPT_GET) {
3480                 error = sctp_getopt(so, sopt->sopt_name, optval, &optsize, p);
3481         } else {
3482                 error = EINVAL;
3483         }
3484         if ((error == 0) && (optval != NULL)) {
3485                 error = sooptcopyout(sopt, optval, optsize);
3486                 SCTP_FREE(optval);
3487         } else if (optval != NULL) {
3488                 SCTP_FREE(optval);
3489         }
3490 out:
3491         return (error);
3492 }
3493
3494
3495 static int
3496 sctp_connect(struct socket *so, struct sockaddr *addr, struct thread *p)
3497 {
3498         int error = 0;
3499         int create_lock_on = 0;
3500         uint32_t vrf_id;
3501         struct sctp_inpcb *inp;
3502         struct sctp_tcb *stcb = NULL;
3503
3504         inp = (struct sctp_inpcb *)so->so_pcb;
3505         if (inp == 0) {
3506                 /* I made the same as TCP since we are not setup? */
3507                 return (ECONNRESET);
3508         }
3509         SCTP_ASOC_CREATE_LOCK(inp);
3510         create_lock_on = 1;
3511
3512         SCTP_INP_INCR_REF(inp);
3513         if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3514             (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
3515                 /* Should I really unlock ? */
3516                 error = EFAULT;
3517                 goto out_now;
3518         }
3519 #ifdef INET6
3520         if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) &&
3521             (addr->sa_family == AF_INET6)) {
3522                 error = EINVAL;
3523                 goto out_now;
3524         }
3525 #endif                          /* INET6 */
3526         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
3527             SCTP_PCB_FLAGS_UNBOUND) {
3528                 /* Bind a ephemeral port */
3529                 error = sctp_inpcb_bind(so, NULL, p);
3530                 if (error) {
3531                         goto out_now;
3532                 }
3533         }
3534         /* Now do we connect? */
3535         if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
3536                 error = EINVAL;
3537                 goto out_now;
3538         }
3539         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
3540             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
3541                 /* We are already connected AND the TCP model */
3542                 error = EADDRINUSE;
3543                 goto out_now;
3544         }
3545         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
3546                 SCTP_INP_RLOCK(inp);
3547                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
3548                 SCTP_INP_RUNLOCK(inp);
3549         } else {
3550                 /*
3551                  * We increment here since sctp_findassociation_ep_addr()
3552                  * wil do a decrement if it finds the stcb as long as the
3553                  * locked tcb (last argument) is NOT a TCB.. aka NULL.
3554                  */
3555                 SCTP_INP_INCR_REF(inp);
3556                 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL);
3557                 if (stcb == NULL) {
3558                         SCTP_INP_DECR_REF(inp);
3559                 } else {
3560                         SCTP_TCB_LOCK(stcb);
3561                 }
3562         }
3563         if (stcb != NULL) {
3564                 /* Already have or am bring up an association */
3565                 error = EALREADY;
3566                 goto out_now;
3567         }
3568         vrf_id = inp->def_vrf_id;
3569         /* We are GOOD to go */
3570         stcb = sctp_aloc_assoc(inp, addr, 1, &error, 0, vrf_id);
3571         if (stcb == NULL) {
3572                 /* Gak! no memory */
3573                 goto out_now;
3574         }
3575         if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
3576                 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
3577                 /* Set the connected flag so we can queue data */
3578                 soisconnecting(so);
3579         }
3580         stcb->asoc.state = SCTP_STATE_COOKIE_WAIT;
3581         (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
3582
3583         /* initialize authentication parameters for the assoc */
3584         sctp_initialize_auth_params(inp, stcb);
3585
3586         sctp_send_initiate(inp, stcb);
3587         SCTP_TCB_UNLOCK(stcb);
3588 out_now:
3589         if (create_lock_on) {
3590                 SCTP_ASOC_CREATE_UNLOCK(inp);
3591         }
3592         SCTP_INP_DECR_REF(inp);
3593         return error;
3594 }
3595
3596 int
3597 sctp_listen(struct socket *so, int backlog, struct thread *p)
3598 {
3599         /*
3600          * Note this module depends on the protocol processing being called
3601          * AFTER any socket level flags and backlog are applied to the
3602          * socket. The traditional way that the socket flags are applied is
3603          * AFTER protocol processing. We have made a change to the
3604          * sys/kern/uipc_socket.c module to reverse this but this MUST be in
3605          * place if the socket API for SCTP is to work properly.
3606          */
3607
3608         int error = 0;
3609         struct sctp_inpcb *inp;
3610
3611         inp = (struct sctp_inpcb *)so->so_pcb;
3612         if (inp == 0) {
3613                 /* I made the same as TCP since we are not setup? */
3614                 return (ECONNRESET);
3615         }
3616         SCTP_INP_RLOCK(inp);
3617 #ifdef SCTP_LOCK_LOGGING
3618         sctp_log_lock(inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_SOCK);
3619 #endif
3620         SOCK_LOCK(so);
3621         error = solisten_proto_check(so);
3622         if (error) {
3623                 SOCK_UNLOCK(so);
3624                 SCTP_INP_RUNLOCK(inp);
3625                 return (error);
3626         }
3627         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
3628             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
3629                 /* We are already connected AND the TCP model */
3630                 SCTP_INP_RUNLOCK(inp);
3631                 SOCK_UNLOCK(so);
3632                 return (EADDRINUSE);
3633         }
3634         if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
3635                 /* We must do a bind. */
3636                 SOCK_UNLOCK(so);
3637                 SCTP_INP_RUNLOCK(inp);
3638                 if ((error = sctp_inpcb_bind(so, NULL, p))) {
3639                         /* bind error, probably perm */
3640                         return (error);
3641                 }
3642                 SOCK_LOCK(so);
3643         } else {
3644                 SCTP_INP_RUNLOCK(inp);
3645         }
3646         /* It appears for 7.0 and on, we must always call this. */
3647         solisten_proto(so, backlog);
3648         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
3649                 /* remove the ACCEPTCONN flag for one-to-many sockets */
3650                 so->so_options &= ~SO_ACCEPTCONN;
3651         }
3652         if (backlog == 0) {
3653                 /* turning off listen */
3654                 so->so_options &= ~SO_ACCEPTCONN;
3655         }
3656         SOCK_UNLOCK(so);
3657         return (error);
3658 }
3659
3660 static int sctp_defered_wakeup_cnt = 0;
3661
3662 int
3663 sctp_accept(struct socket *so, struct sockaddr **addr)
3664 {
3665         struct sctp_tcb *stcb;
3666         struct sctp_inpcb *inp;
3667         union sctp_sockstore store;
3668
3669         int error;
3670
3671         inp = (struct sctp_inpcb *)so->so_pcb;
3672
3673         if (inp == 0) {
3674                 return (ECONNRESET);
3675         }
3676         SCTP_INP_RLOCK(inp);
3677         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
3678                 SCTP_INP_RUNLOCK(inp);
3679                 return (ENOTSUP);
3680         }
3681         if (so->so_state & SS_ISDISCONNECTED) {
3682                 SCTP_INP_RUNLOCK(inp);
3683                 return (ECONNABORTED);
3684         }
3685         stcb = LIST_FIRST(&inp->sctp_asoc_list);
3686         if (stcb == NULL) {
3687                 SCTP_INP_RUNLOCK(inp);
3688                 return (ECONNRESET);
3689         }
3690         SCTP_TCB_LOCK(stcb);
3691         SCTP_INP_RUNLOCK(inp);
3692         store = stcb->asoc.primary_destination->ro._l_addr;
3693         SCTP_TCB_UNLOCK(stcb);
3694         if (store.sa.sa_family == AF_INET) {
3695                 struct sockaddr_in *sin;
3696
3697                 SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
3698                 sin->sin_family = AF_INET;
3699                 sin->sin_len = sizeof(*sin);
3700                 sin->sin_port = ((struct sockaddr_in *)&store)->sin_port;
3701                 sin->sin_addr = ((struct sockaddr_in *)&store)->sin_addr;
3702                 *addr = (struct sockaddr *)sin;
3703         } else {
3704                 struct sockaddr_in6 *sin6;
3705
3706                 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
3707                 sin6->sin6_family = AF_INET6;
3708                 sin6->sin6_len = sizeof(*sin6);
3709                 sin6->sin6_port = ((struct sockaddr_in6 *)&store)->sin6_port;
3710
3711                 sin6->sin6_addr = ((struct sockaddr_in6 *)&store)->sin6_addr;
3712                 if ((error = sa6_recoverscope(sin6)) != 0) {
3713                         SCTP_FREE_SONAME(sin6);
3714                         return (error);
3715                 }
3716                 *addr = (struct sockaddr *)sin6;
3717         }
3718         /* Wake any delayed sleep action */
3719         if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) {
3720                 SCTP_INP_WLOCK(inp);
3721                 inp->sctp_flags &= ~SCTP_PCB_FLAGS_DONT_WAKE;
3722                 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT) {
3723                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
3724                         SCTP_INP_WUNLOCK(inp);
3725                         SOCKBUF_LOCK(&inp->sctp_socket->so_snd);
3726                         if (sowriteable(inp->sctp_socket)) {
3727                                 sowwakeup_locked(inp->sctp_socket);
3728                         } else {
3729                                 SOCKBUF_UNLOCK(&inp->sctp_socket->so_snd);
3730                         }
3731                         SCTP_INP_WLOCK(inp);
3732                 }
3733                 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT) {
3734                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
3735                         SCTP_INP_WUNLOCK(inp);
3736                         SOCKBUF_LOCK(&inp->sctp_socket->so_rcv);
3737                         if (soreadable(inp->sctp_socket)) {
3738                                 sctp_defered_wakeup_cnt++;
3739                                 sorwakeup_locked(inp->sctp_socket);
3740                         } else {
3741                                 SOCKBUF_UNLOCK(&inp->sctp_socket->so_rcv);
3742                         }
3743                         SCTP_INP_WLOCK(inp);
3744                 }
3745                 SCTP_INP_WUNLOCK(inp);
3746         }
3747         return (0);
3748 }
3749
3750 int
3751 sctp_ingetaddr(struct socket *so, struct sockaddr **addr)
3752 {
3753         struct sockaddr_in *sin;
3754         uint32_t vrf_id;
3755         struct sctp_inpcb *inp;
3756         struct sctp_ifa *sctp_ifa;
3757
3758         /*
3759          * Do the malloc first in case it blocks.
3760          */
3761         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
3762         sin->sin_family = AF_INET;
3763         sin->sin_len = sizeof(*sin);
3764         inp = (struct sctp_inpcb *)so->so_pcb;
3765         if (!inp) {
3766                 SCTP_FREE_SONAME(sin);
3767                 return ECONNRESET;
3768         }
3769         SCTP_INP_RLOCK(inp);
3770         sin->sin_port = inp->sctp_lport;
3771         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
3772                 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
3773                         struct sctp_tcb *stcb;
3774                         struct sockaddr_in *sin_a;
3775                         struct sctp_nets *net;
3776                         int fnd;
3777
3778                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
3779                         if (stcb == NULL) {
3780                                 goto notConn;
3781                         }
3782                         fnd = 0;
3783                         sin_a = NULL;
3784                         SCTP_TCB_LOCK(stcb);
3785                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3786                                 sin_a = (struct sockaddr_in *)&net->ro._l_addr;
3787                                 if (sin_a == NULL)
3788                                         /* this will make coverity happy */
3789                                         continue;
3790
3791                                 if (sin_a->sin_family == AF_INET) {
3792                                         fnd = 1;
3793                                         break;
3794                                 }
3795                         }
3796                         if ((!fnd) || (sin_a == NULL)) {
3797                                 /* punt */
3798                                 SCTP_TCB_UNLOCK(stcb);
3799                                 goto notConn;
3800                         }
3801                         vrf_id = inp->def_vrf_id;
3802                         sctp_ifa = sctp_source_address_selection(inp,
3803                             stcb,
3804                             (sctp_route_t *) & net->ro,
3805                             net, 0, vrf_id);
3806                         if (sctp_ifa) {
3807                                 sin->sin_addr = sctp_ifa->address.sin.sin_addr;
3808                                 sctp_free_ifa(sctp_ifa);
3809                         }
3810                         SCTP_TCB_UNLOCK(stcb);
3811                 } else {
3812                         /* For the bound all case you get back 0 */
3813         notConn:
3814                         sin->sin_addr.s_addr = 0;
3815                 }
3816
3817         } else {
3818                 /* Take the first IPv4 address in the list */
3819                 struct sctp_laddr *laddr;
3820                 int fnd = 0;
3821
3822                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
3823                         if (laddr->ifa->address.sa.sa_family == AF_INET) {
3824                                 struct sockaddr_in *sin_a;
3825
3826                                 sin_a = (struct sockaddr_in *)&laddr->ifa->address.sa;
3827                                 sin->sin_addr = sin_a->sin_addr;
3828                                 fnd = 1;
3829                                 break;
3830                         }
3831                 }
3832                 if (!fnd) {
3833                         SCTP_FREE_SONAME(sin);
3834                         SCTP_INP_RUNLOCK(inp);
3835                         return ENOENT;
3836                 }
3837         }
3838         SCTP_INP_RUNLOCK(inp);
3839         (*addr) = (struct sockaddr *)sin;
3840         return (0);
3841 }
3842
3843 int
3844 sctp_peeraddr(struct socket *so, struct sockaddr **addr)
3845 {
3846         struct sockaddr_in *sin = (struct sockaddr_in *)*addr;
3847         int fnd;
3848         struct sockaddr_in *sin_a;
3849         struct sctp_inpcb *inp;
3850         struct sctp_tcb *stcb;
3851         struct sctp_nets *net;
3852
3853         /* Do the malloc first in case it blocks. */
3854         inp = (struct sctp_inpcb *)so->so_pcb;
3855         if ((inp == NULL) ||
3856             ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) {
3857                 /* UDP type and listeners will drop out here */
3858                 return (ENOTCONN);
3859         }
3860         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
3861         sin->sin_family = AF_INET;
3862         sin->sin_len = sizeof(*sin);
3863
3864         /* We must recapture incase we blocked */
3865         inp = (struct sctp_inpcb *)so->so_pcb;
3866         if (!inp) {
3867                 SCTP_FREE_SONAME(sin);
3868                 return ECONNRESET;
3869         }
3870         SCTP_INP_RLOCK(inp);
3871         stcb = LIST_FIRST(&inp->sctp_asoc_list);
3872         if (stcb) {
3873                 SCTP_TCB_LOCK(stcb);
3874         }
3875         SCTP_INP_RUNLOCK(inp);
3876         if (stcb == NULL) {
3877                 SCTP_FREE_SONAME(sin);
3878                 return ECONNRESET;
3879         }
3880         fnd = 0;
3881         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3882                 sin_a = (struct sockaddr_in *)&net->ro._l_addr;
3883                 if (sin_a->sin_family == AF_INET) {
3884                         fnd = 1;
3885                         sin->sin_port = stcb->rport;
3886                         sin->sin_addr = sin_a->sin_addr;
3887                         break;
3888                 }
3889         }
3890         SCTP_TCB_UNLOCK(stcb);
3891         if (!fnd) {
3892                 /* No IPv4 address */
3893                 SCTP_FREE_SONAME(sin);
3894                 return ENOENT;
3895         }
3896         (*addr) = (struct sockaddr *)sin;
3897         return (0);
3898 }
3899
3900 struct pr_usrreqs sctp_usrreqs = {
3901         .pru_abort = sctp_abort,
3902         .pru_accept = sctp_accept,
3903         .pru_attach = sctp_attach,
3904         .pru_bind = sctp_bind,
3905         .pru_connect = sctp_connect,
3906         .pru_control = in_control,
3907         .pru_close = sctp_close,
3908         .pru_detach = sctp_close,
3909         .pru_sopoll = sopoll_generic,
3910         .pru_disconnect = sctp_disconnect,
3911         .pru_listen = sctp_listen,
3912         .pru_peeraddr = sctp_peeraddr,
3913         .pru_send = sctp_sendm,
3914         .pru_shutdown = sctp_shutdown,
3915         .pru_sockaddr = sctp_ingetaddr,
3916         .pru_sosend = sctp_sosend,
3917         .pru_soreceive = sctp_soreceive
3918 };