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         }
1370         SCTP_INP_DECR_REF(inp);
1371         return error;
1372 }
1373
1374 #define SCTP_FIND_STCB(inp, stcb, assoc_id) { \
1375         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||\
1376             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { \
1377                 SCTP_INP_RLOCK(inp); \
1378                 stcb = LIST_FIRST(&inp->sctp_asoc_list); \
1379                 if (stcb) { \
1380                         SCTP_TCB_LOCK(stcb); \
1381                 } \
1382                 SCTP_INP_RUNLOCK(inp); \
1383         } else if (assoc_id != 0) { \
1384                 stcb = sctp_findassociation_ep_asocid(inp, assoc_id, 1); \
1385                 if (stcb == NULL) { \
1386                         error = ENOENT; \
1387                         break; \
1388                 } \
1389         } else { \
1390                 stcb = NULL; \
1391         } \
1392   }
1393
1394
1395 #define SCTP_CHECK_AND_CAST(destp, srcp, type, size)  {\
1396         if (size < sizeof(type)) { \
1397                 error = EINVAL; \
1398                 break; \
1399         } else { \
1400                 destp = (type *)srcp; \
1401         } \
1402       }
1403
1404 static int
1405 sctp_getopt(struct socket *so, int optname, void *optval, size_t *optsize,
1406     void *p)
1407 {
1408         struct sctp_inpcb *inp;
1409         int error, val = 0;
1410         struct sctp_tcb *stcb = NULL;
1411
1412         if (optval == NULL) {
1413                 return (EINVAL);
1414         }
1415         inp = (struct sctp_inpcb *)so->so_pcb;
1416         if (inp == 0)
1417                 return EINVAL;
1418         error = 0;
1419
1420         switch (optname) {
1421         case SCTP_NODELAY:
1422         case SCTP_AUTOCLOSE:
1423         case SCTP_EXPLICIT_EOR:
1424         case SCTP_AUTO_ASCONF:
1425         case SCTP_DISABLE_FRAGMENTS:
1426         case SCTP_I_WANT_MAPPED_V4_ADDR:
1427         case SCTP_USE_EXT_RCVINFO:
1428                 SCTP_INP_RLOCK(inp);
1429                 switch (optname) {
1430                 case SCTP_DISABLE_FRAGMENTS:
1431                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NO_FRAGMENT);
1432                         break;
1433                 case SCTP_I_WANT_MAPPED_V4_ADDR:
1434                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4);
1435                         break;
1436                 case SCTP_AUTO_ASCONF:
1437                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
1438                         break;
1439                 case SCTP_EXPLICIT_EOR:
1440                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
1441                         break;
1442                 case SCTP_NODELAY:
1443                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NODELAY);
1444                         break;
1445                 case SCTP_USE_EXT_RCVINFO:
1446                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO);
1447                         break;
1448                 case SCTP_AUTOCLOSE:
1449                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTOCLOSE))
1450                                 val = TICKS_TO_SEC(inp->sctp_ep.auto_close_time);
1451                         else
1452                                 val = 0;
1453                         break;
1454
1455                 default:
1456                         error = ENOPROTOOPT;
1457                 }               /* end switch (sopt->sopt_name) */
1458                 if (optname != SCTP_AUTOCLOSE) {
1459                         /* make it an "on/off" value */
1460                         val = (val != 0);
1461                 }
1462                 if (*optsize < sizeof(val)) {
1463                         error = EINVAL;
1464                 }
1465                 SCTP_INP_RUNLOCK(inp);
1466                 if (error == 0) {
1467                         /* return the option value */
1468                         *(int *)optval = val;
1469                         *optsize = sizeof(val);
1470                 }
1471                 break;
1472
1473         case SCTP_PARTIAL_DELIVERY_POINT:
1474                 {
1475                         uint32_t *value;
1476
1477                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1478                         *value = inp->partial_delivery_point;
1479                         *optsize = sizeof(uint32_t);
1480                 }
1481                 break;
1482         case SCTP_FRAGMENT_INTERLEAVE:
1483                 {
1484                         uint32_t *value;
1485
1486                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1487                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) {
1488                                 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) {
1489                                         *value = SCTP_FRAG_LEVEL_2;
1490                                 } else {
1491                                         *value = SCTP_FRAG_LEVEL_1;
1492                                 }
1493                         } else {
1494                                 *value = SCTP_FRAG_LEVEL_0;
1495                         }
1496                         *optsize = sizeof(uint32_t);
1497                 }
1498                 break;
1499         case SCTP_CMT_ON_OFF:
1500                 {
1501                         struct sctp_assoc_value *av;
1502
1503                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1504                         if (sctp_cmt_on_off) {
1505                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1506                                 if (stcb) {
1507                                         av->assoc_value = stcb->asoc.sctp_cmt_on_off;
1508                                         SCTP_TCB_UNLOCK(stcb);
1509
1510                                 } else {
1511                                         error = ENOTCONN;
1512                                 }
1513                         } else {
1514                                 error = ENOPROTOOPT;
1515                         }
1516                         *optsize = sizeof(*av);
1517                 }
1518                 break;
1519         case SCTP_GET_ADDR_LEN:
1520                 {
1521                         struct sctp_assoc_value *av;
1522
1523                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1524                         error = EINVAL;
1525 #ifdef INET
1526                         if (av->assoc_value == AF_INET) {
1527                                 av->assoc_value = sizeof(struct sockaddr_in);
1528                                 error = 0;
1529                         }
1530 #endif
1531 #ifdef INET6
1532                         if (av->assoc_value == AF_INET6) {
1533                                 av->assoc_value = sizeof(struct sockaddr_in6);
1534                                 error = 0;
1535                         }
1536 #endif
1537                         *optsize = sizeof(*av);
1538                 }
1539                 break;
1540         case SCTP_GET_ASSOC_NUMBER:
1541                 {
1542                         uint32_t *value, cnt;
1543
1544                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1545                         cnt = 0;
1546                         SCTP_INP_RLOCK(inp);
1547                         LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
1548                                 cnt++;
1549                         }
1550                         SCTP_INP_RUNLOCK(inp);
1551                         *value = cnt;
1552                         *optsize = sizeof(uint32_t);
1553                 }
1554                 break;
1555
1556         case SCTP_GET_ASSOC_ID_LIST:
1557                 {
1558                         struct sctp_assoc_ids *ids;
1559                         unsigned int at, limit;
1560
1561                         SCTP_CHECK_AND_CAST(ids, optval, struct sctp_assoc_ids, *optsize);
1562                         at = 0;
1563                         limit = *optsize / sizeof(sctp_assoc_t);
1564                         SCTP_INP_RLOCK(inp);
1565                         LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
1566                                 if (at < limit) {
1567                                         ids->gaids_assoc_id[at++] = sctp_get_associd(stcb);
1568                                 } else {
1569                                         error = EINVAL;
1570                                         break;
1571                                 }
1572                         }
1573                         SCTP_INP_RUNLOCK(inp);
1574                         *optsize = at * sizeof(sctp_assoc_t);
1575                 }
1576                 break;
1577         case SCTP_CONTEXT:
1578                 {
1579                         struct sctp_assoc_value *av;
1580
1581                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1582                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1583
1584                         if (stcb) {
1585                                 av->assoc_value = stcb->asoc.context;
1586                                 SCTP_TCB_UNLOCK(stcb);
1587                         } else {
1588                                 SCTP_INP_RLOCK(inp);
1589                                 av->assoc_value = inp->sctp_context;
1590                                 SCTP_INP_RUNLOCK(inp);
1591                         }
1592                         *optsize = sizeof(*av);
1593                 }
1594                 break;
1595         case SCTP_VRF_ID:
1596                 {
1597                         uint32_t *vrf_id;
1598
1599                         SCTP_CHECK_AND_CAST(vrf_id, optval, uint32_t, *optsize);
1600                         *vrf_id = inp->def_vrf_id;
1601                         break;
1602                 }
1603         case SCTP_GET_ASOC_VRF:
1604                 {
1605                         struct sctp_assoc_value *id;
1606
1607                         SCTP_CHECK_AND_CAST(id, optval, struct sctp_assoc_value, *optsize);
1608                         SCTP_FIND_STCB(inp, stcb, id->assoc_id);
1609                         if (stcb == NULL) {
1610                                 error = EINVAL;
1611                                 break;
1612                         }
1613                         id->assoc_value = stcb->asoc.vrf_id;
1614                         break;
1615                 }
1616         case SCTP_GET_VRF_IDS:
1617                 {
1618                         error = EOPNOTSUPP;
1619                         break;
1620                 }
1621         case SCTP_GET_NONCE_VALUES:
1622                 {
1623                         struct sctp_get_nonce_values *gnv;
1624
1625                         SCTP_CHECK_AND_CAST(gnv, optval, struct sctp_get_nonce_values, *optsize);
1626                         SCTP_FIND_STCB(inp, stcb, gnv->gn_assoc_id);
1627
1628                         if (stcb) {
1629                                 gnv->gn_peers_tag = stcb->asoc.peer_vtag;
1630                                 gnv->gn_local_tag = stcb->asoc.my_vtag;
1631                                 SCTP_TCB_UNLOCK(stcb);
1632                         } else {
1633                                 error = ENOTCONN;
1634                         }
1635                         *optsize = sizeof(*gnv);
1636                 }
1637                 break;
1638         case SCTP_DELAYED_ACK_TIME:
1639                 {
1640                         struct sctp_assoc_value *tm;
1641
1642                         SCTP_CHECK_AND_CAST(tm, optval, struct sctp_assoc_value, *optsize);
1643                         SCTP_FIND_STCB(inp, stcb, tm->assoc_id);
1644
1645                         if (stcb) {
1646                                 tm->assoc_value = stcb->asoc.delayed_ack;
1647                                 SCTP_TCB_UNLOCK(stcb);
1648                         } else {
1649                                 SCTP_INP_RLOCK(inp);
1650                                 tm->assoc_value = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
1651                                 SCTP_INP_RUNLOCK(inp);
1652                         }
1653                         *optsize = sizeof(*tm);
1654                 }
1655                 break;
1656
1657         case SCTP_GET_SNDBUF_USE:
1658                 {
1659                         struct sctp_sockstat *ss;
1660
1661                         SCTP_CHECK_AND_CAST(ss, optval, struct sctp_sockstat, *optsize);
1662                         SCTP_FIND_STCB(inp, stcb, ss->ss_assoc_id);
1663
1664                         if (stcb) {
1665                                 ss->ss_total_sndbuf = stcb->asoc.total_output_queue_size;
1666                                 ss->ss_total_recv_buf = (stcb->asoc.size_on_reasm_queue +
1667                                     stcb->asoc.size_on_all_streams);
1668                                 SCTP_TCB_UNLOCK(stcb);
1669                         } else {
1670                                 error = ENOTCONN;
1671                         }
1672                         *optsize = sizeof(struct sctp_sockstat);
1673                 }
1674                 break;
1675         case SCTP_MAXBURST:
1676                 {
1677                         uint8_t *value;
1678
1679                         SCTP_CHECK_AND_CAST(value, optval, uint8_t, *optsize);
1680
1681                         SCTP_INP_RLOCK(inp);
1682                         *value = inp->sctp_ep.max_burst;
1683                         SCTP_INP_RUNLOCK(inp);
1684                         *optsize = sizeof(uint8_t);
1685                 }
1686                 break;
1687         case SCTP_MAXSEG:
1688                 {
1689                         struct sctp_assoc_value *av;
1690                         int ovh;
1691
1692                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1693                         if (av->assoc_id) {
1694                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1695                         } else {
1696                                 stcb = NULL;
1697                         }
1698
1699                         if (stcb) {
1700                                 av->assoc_value = sctp_get_frag_point(stcb, &stcb->asoc);
1701                                 SCTP_TCB_UNLOCK(stcb);
1702                         } else {
1703                                 SCTP_INP_RLOCK(inp);
1704                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1705                                         ovh = SCTP_MED_OVERHEAD;
1706                                 } else {
1707                                         ovh = SCTP_MED_V4_OVERHEAD;
1708                                 }
1709                                 av->assoc_value = inp->sctp_frag_point - ovh;
1710                                 SCTP_INP_RUNLOCK(inp);
1711                         }
1712                         *optsize = sizeof(struct sctp_assoc_value);
1713                 }
1714                 break;
1715         case SCTP_GET_STAT_LOG:
1716 #ifdef SCTP_STAT_LOGGING
1717                 error = sctp_fill_stat_log(optval, optsize);
1718 #else
1719                 error = EOPNOTSUPP;
1720 #endif
1721                 break;
1722         case SCTP_EVENTS:
1723                 {
1724                         struct sctp_event_subscribe *events;
1725
1726                         SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, *optsize);
1727                         memset(events, 0, sizeof(*events));
1728                         SCTP_INP_RLOCK(inp);
1729                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT))
1730                                 events->sctp_data_io_event = 1;
1731
1732                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT))
1733                                 events->sctp_association_event = 1;
1734
1735                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT))
1736                                 events->sctp_address_event = 1;
1737
1738                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT))
1739                                 events->sctp_send_failure_event = 1;
1740
1741                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR))
1742                                 events->sctp_peer_error_event = 1;
1743
1744                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT))
1745                                 events->sctp_shutdown_event = 1;
1746
1747                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT))
1748                                 events->sctp_partial_delivery_event = 1;
1749
1750                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT))
1751                                 events->sctp_adaptation_layer_event = 1;
1752
1753                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT))
1754                                 events->sctp_authentication_event = 1;
1755
1756                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT))
1757                                 events->sctp_stream_reset_events = 1;
1758                         SCTP_INP_RUNLOCK(inp);
1759                         *optsize = sizeof(struct sctp_event_subscribe);
1760                 }
1761                 break;
1762
1763         case SCTP_ADAPTATION_LAYER:
1764                 {
1765                         uint32_t *value;
1766
1767                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1768
1769                         SCTP_INP_RLOCK(inp);
1770                         *value = inp->sctp_ep.adaptation_layer_indicator;
1771                         SCTP_INP_RUNLOCK(inp);
1772                         *optsize = sizeof(uint32_t);
1773                 }
1774                 break;
1775         case SCTP_SET_INITIAL_DBG_SEQ:
1776                 {
1777                         uint32_t *value;
1778
1779                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1780                         SCTP_INP_RLOCK(inp);
1781                         *value = inp->sctp_ep.initial_sequence_debug;
1782                         SCTP_INP_RUNLOCK(inp);
1783                         *optsize = sizeof(uint32_t);
1784                 }
1785                 break;
1786         case SCTP_GET_LOCAL_ADDR_SIZE:
1787                 {
1788                         uint32_t *value;
1789
1790                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1791                         SCTP_INP_RLOCK(inp);
1792                         *value = sctp_count_max_addresses(inp);
1793                         SCTP_INP_RUNLOCK(inp);
1794                         *optsize = sizeof(uint32_t);
1795                 }
1796                 break;
1797         case SCTP_GET_REMOTE_ADDR_SIZE:
1798                 {
1799                         uint32_t *value;
1800                         size_t size;
1801                         struct sctp_nets *net;
1802
1803                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1804                         /* FIXME MT: change to sctp_assoc_value? */
1805                         SCTP_FIND_STCB(inp, stcb, (sctp_assoc_t) * value);
1806
1807                         if (stcb) {
1808                                 size = 0;
1809                                 /* Count the sizes */
1810                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1811                                         if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) ||
1812                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) {
1813                                                 size += sizeof(struct sockaddr_in6);
1814                                         } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) {
1815                                                 size += sizeof(struct sockaddr_in);
1816                                         } else {
1817                                                 /* huh */
1818                                                 break;
1819                                         }
1820                                 }
1821                                 SCTP_TCB_UNLOCK(stcb);
1822                                 *value = (uint32_t) size;
1823                         } else {
1824                                 error = ENOTCONN;
1825                         }
1826                         *optsize = sizeof(uint32_t);
1827                 }
1828                 break;
1829         case SCTP_GET_PEER_ADDRESSES:
1830                 /*
1831                  * Get the address information, an array is passed in to
1832                  * fill up we pack it.
1833                  */
1834                 {
1835                         size_t cpsz, left;
1836                         struct sockaddr_storage *sas;
1837                         struct sctp_nets *net;
1838                         struct sctp_getaddresses *saddr;
1839
1840                         SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize);
1841                         SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id);
1842
1843                         if (stcb) {
1844                                 left = (*optsize) - sizeof(struct sctp_getaddresses);
1845                                 *optsize = sizeof(struct sctp_getaddresses);
1846                                 sas = (struct sockaddr_storage *)&saddr->addr[0];
1847
1848                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1849                                         if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) ||
1850                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) {
1851                                                 cpsz = sizeof(struct sockaddr_in6);
1852                                         } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) {
1853                                                 cpsz = sizeof(struct sockaddr_in);
1854                                         } else {
1855                                                 /* huh */
1856                                                 break;
1857                                         }
1858                                         if (left < cpsz) {
1859                                                 /* not enough room. */
1860                                                 break;
1861                                         }
1862                                         if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) &&
1863                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET)) {
1864                                                 /* Must map the address */
1865                                                 in6_sin_2_v4mapsin6((struct sockaddr_in *)&net->ro._l_addr,
1866                                                     (struct sockaddr_in6 *)sas);
1867                                         } else {
1868                                                 memcpy(sas, &net->ro._l_addr, cpsz);
1869                                         }
1870                                         ((struct sockaddr_in *)sas)->sin_port = stcb->rport;
1871
1872                                         sas = (struct sockaddr_storage *)((caddr_t)sas + cpsz);
1873                                         left -= cpsz;
1874                                         *optsize += cpsz;
1875                                 }
1876                                 SCTP_TCB_UNLOCK(stcb);
1877                         } else {
1878                                 error = ENOENT;
1879                         }
1880                 }
1881                 break;
1882         case SCTP_GET_LOCAL_ADDRESSES:
1883                 {
1884                         size_t limit, actual;
1885                         struct sockaddr_storage *sas;
1886                         struct sctp_getaddresses *saddr;
1887
1888                         SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize);
1889                         SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id);
1890
1891                         sas = (struct sockaddr_storage *)&saddr->addr[0];
1892                         limit = *optsize - sizeof(sctp_assoc_t);
1893                         actual = sctp_fill_up_addresses(inp, stcb, limit, sas);
1894                         if (stcb) {
1895                                 SCTP_TCB_UNLOCK(stcb);
1896                         }
1897                         *optsize = sizeof(struct sockaddr_storage) + actual;
1898                 }
1899                 break;
1900         case SCTP_PEER_ADDR_PARAMS:
1901                 {
1902                         struct sctp_paddrparams *paddrp;
1903                         struct sctp_nets *net;
1904
1905                         SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, *optsize);
1906                         SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id);
1907
1908                         net = NULL;
1909                         if (stcb) {
1910                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address);
1911                         } else {
1912                                 /*
1913                                  * We increment here since
1914                                  * sctp_findassociation_ep_addr() wil do a
1915                                  * decrement if it finds the stcb as long as
1916                                  * the locked tcb (last argument) is NOT a
1917                                  * TCB.. aka NULL.
1918                                  */
1919                                 SCTP_INP_INCR_REF(inp);
1920                                 stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddrp->spp_address, &net, NULL, NULL);
1921                                 if (stcb == NULL) {
1922                                         SCTP_INP_DECR_REF(inp);
1923                                 }
1924                         }
1925
1926                         if (stcb) {
1927                                 /* Applys to the specific association */
1928                                 paddrp->spp_flags = 0;
1929                                 if (net) {
1930                                         paddrp->spp_pathmaxrxt = net->failure_threshold;
1931                                         paddrp->spp_pathmtu = net->mtu;
1932                                         /* get flags for HB */
1933                                         if (net->dest_state & SCTP_ADDR_NOHB)
1934                                                 paddrp->spp_flags |= SPP_HB_DISABLE;
1935                                         else
1936                                                 paddrp->spp_flags |= SPP_HB_ENABLE;
1937                                         /* get flags for PMTU */
1938                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
1939                                                 paddrp->spp_flags |= SPP_PMTUD_ENABLE;
1940                                         } else {
1941                                                 paddrp->spp_flags |= SPP_PMTUD_DISABLE;
1942                                         }
1943 #ifdef INET
1944                                         if (net->ro._l_addr.sin.sin_family == AF_INET) {
1945                                                 paddrp->spp_ipv4_tos = net->tos_flowlabel & 0x000000fc;
1946                                                 paddrp->spp_flags |= SPP_IPV4_TOS;
1947                                         }
1948 #endif
1949 #ifdef INET6
1950                                         if (net->ro._l_addr.sin6.sin6_family == AF_INET6) {
1951                                                 paddrp->spp_ipv6_flowlabel = net->tos_flowlabel;
1952                                                 paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
1953                                         }
1954 #endif
1955                                 } else {
1956                                         /*
1957                                          * No destination so return default
1958                                          * value
1959                                          */
1960                                         paddrp->spp_pathmaxrxt = stcb->asoc.def_net_failure;
1961                                         paddrp->spp_pathmtu = sctp_get_frag_point(stcb, &stcb->asoc);
1962 #ifdef INET
1963                                         paddrp->spp_ipv4_tos = stcb->asoc.default_tos & 0x000000fc;
1964                                         paddrp->spp_flags |= SPP_IPV4_TOS;
1965 #endif
1966 #ifdef INET6
1967                                         paddrp->spp_ipv6_flowlabel = stcb->asoc.default_flowlabel;
1968                                         paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
1969 #endif
1970                                         /* default settings should be these */
1971                                         if (sctp_is_hb_timer_running(stcb)) {
1972                                                 paddrp->spp_flags |= SPP_HB_ENABLE;
1973                                         }
1974                                 }
1975                                 paddrp->spp_hbinterval = stcb->asoc.heart_beat_delay;
1976                                 paddrp->spp_assoc_id = sctp_get_associd(stcb);
1977                                 SCTP_TCB_UNLOCK(stcb);
1978                         } else {
1979                                 /* Use endpoint defaults */
1980                                 SCTP_INP_RLOCK(inp);
1981                                 paddrp->spp_pathmaxrxt = inp->sctp_ep.def_net_failure;
1982                                 paddrp->spp_hbinterval = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
1983                                 paddrp->spp_assoc_id = (sctp_assoc_t) 0;
1984                                 /* get inp's default */
1985 #ifdef INET
1986                                 paddrp->spp_ipv4_tos = inp->ip_inp.inp.inp_ip_tos;
1987                                 paddrp->spp_flags |= SPP_IPV4_TOS;
1988 #endif
1989 #ifdef INET6
1990                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1991                                         paddrp->spp_ipv6_flowlabel = ((struct in6pcb *)inp)->in6p_flowinfo;
1992                                         paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
1993                                 }
1994 #endif
1995                                 /* can't return this */
1996                                 paddrp->spp_pathmaxrxt = 0;
1997                                 paddrp->spp_pathmtu = 0;
1998                                 /* default behavior, no stcb */
1999                                 paddrp->spp_flags = SPP_HB_ENABLE | SPP_PMTUD_ENABLE;
2000
2001                                 SCTP_INP_RUNLOCK(inp);
2002                         }
2003                         *optsize = sizeof(struct sctp_paddrparams);
2004                 }
2005                 break;
2006         case SCTP_GET_PEER_ADDR_INFO:
2007                 {
2008                         struct sctp_paddrinfo *paddri;
2009                         struct sctp_nets *net;
2010
2011                         SCTP_CHECK_AND_CAST(paddri, optval, struct sctp_paddrinfo, *optsize);
2012                         SCTP_FIND_STCB(inp, stcb, paddri->spinfo_assoc_id);
2013
2014                         net = NULL;
2015                         if (stcb) {
2016                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddri->spinfo_address);
2017                         } else {
2018                                 /*
2019                                  * We increment here since
2020                                  * sctp_findassociation_ep_addr() wil do a
2021                                  * decrement if it finds the stcb as long as
2022                                  * the locked tcb (last argument) is NOT a
2023                                  * TCB.. aka NULL.
2024                                  */
2025                                 SCTP_INP_INCR_REF(inp);
2026                                 stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddri->spinfo_address, &net, NULL, NULL);
2027                                 if (stcb == NULL) {
2028                                         SCTP_INP_DECR_REF(inp);
2029                                 }
2030                         }
2031
2032                         if ((stcb) && (net)) {
2033                                 paddri->spinfo_state = net->dest_state & (SCTP_REACHABLE_MASK | SCTP_ADDR_NOHB);
2034                                 paddri->spinfo_cwnd = net->cwnd;
2035                                 paddri->spinfo_srtt = ((net->lastsa >> 2) + net->lastsv) >> 1;
2036                                 paddri->spinfo_rto = net->RTO;
2037                                 paddri->spinfo_assoc_id = sctp_get_associd(stcb);
2038                                 SCTP_TCB_UNLOCK(stcb);
2039                         } else {
2040                                 if (stcb) {
2041                                         SCTP_TCB_UNLOCK(stcb);
2042                                 }
2043                                 error = ENOENT;
2044                         }
2045                         *optsize = sizeof(struct sctp_paddrinfo);
2046                 }
2047                 break;
2048         case SCTP_PCB_STATUS:
2049                 {
2050                         struct sctp_pcbinfo *spcb;
2051
2052                         SCTP_CHECK_AND_CAST(spcb, optval, struct sctp_pcbinfo, *optsize);
2053                         sctp_fill_pcbinfo(spcb);
2054                         *optsize = sizeof(struct sctp_pcbinfo);
2055                 }
2056                 break;
2057
2058         case SCTP_STATUS:
2059                 {
2060                         struct sctp_nets *net;
2061                         struct sctp_status *sstat;
2062
2063                         SCTP_CHECK_AND_CAST(sstat, optval, struct sctp_status, *optsize);
2064                         SCTP_FIND_STCB(inp, stcb, sstat->sstat_assoc_id);
2065
2066                         if (stcb == NULL) {
2067                                 error = EINVAL;
2068                                 break;
2069                         }
2070                         /*
2071                          * I think passing the state is fine since
2072                          * sctp_constants.h will be available to the user
2073                          * land.
2074                          */
2075                         sstat->sstat_state = stcb->asoc.state;
2076                         sstat->sstat_rwnd = stcb->asoc.peers_rwnd;
2077                         sstat->sstat_unackdata = stcb->asoc.sent_queue_cnt;
2078                         /*
2079                          * We can't include chunks that have been passed to
2080                          * the socket layer. Only things in queue.
2081                          */
2082                         sstat->sstat_penddata = (stcb->asoc.cnt_on_reasm_queue +
2083                             stcb->asoc.cnt_on_all_streams);
2084
2085
2086                         sstat->sstat_instrms = stcb->asoc.streamincnt;
2087                         sstat->sstat_outstrms = stcb->asoc.streamoutcnt;
2088                         sstat->sstat_fragmentation_point = sctp_get_frag_point(stcb, &stcb->asoc);
2089                         memcpy(&sstat->sstat_primary.spinfo_address,
2090                             &stcb->asoc.primary_destination->ro._l_addr,
2091                             ((struct sockaddr *)(&stcb->asoc.primary_destination->ro._l_addr))->sa_len);
2092                         net = stcb->asoc.primary_destination;
2093                         ((struct sockaddr_in *)&sstat->sstat_primary.spinfo_address)->sin_port = stcb->rport;
2094                         /*
2095                          * Again the user can get info from sctp_constants.h
2096                          * for what the state of the network is.
2097                          */
2098                         sstat->sstat_primary.spinfo_state = net->dest_state & SCTP_REACHABLE_MASK;
2099                         sstat->sstat_primary.spinfo_cwnd = net->cwnd;
2100                         sstat->sstat_primary.spinfo_srtt = net->lastsa;
2101                         sstat->sstat_primary.spinfo_rto = net->RTO;
2102                         sstat->sstat_primary.spinfo_mtu = net->mtu;
2103                         sstat->sstat_primary.spinfo_assoc_id = sctp_get_associd(stcb);
2104                         SCTP_TCB_UNLOCK(stcb);
2105                         *optsize = sizeof(*sstat);
2106                 }
2107                 break;
2108         case SCTP_RTOINFO:
2109                 {
2110                         struct sctp_rtoinfo *srto;
2111
2112                         SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, *optsize);
2113                         SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id);
2114
2115                         if (stcb) {
2116                                 srto->srto_initial = stcb->asoc.initial_rto;
2117                                 srto->srto_max = stcb->asoc.maxrto;
2118                                 srto->srto_min = stcb->asoc.minrto;
2119                                 SCTP_TCB_UNLOCK(stcb);
2120                         } else {
2121                                 SCTP_INP_RLOCK(inp);
2122                                 srto->srto_initial = inp->sctp_ep.initial_rto;
2123                                 srto->srto_max = inp->sctp_ep.sctp_maxrto;
2124                                 srto->srto_min = inp->sctp_ep.sctp_minrto;
2125                                 SCTP_INP_RUNLOCK(inp);
2126                         }
2127                         *optsize = sizeof(*srto);
2128                 }
2129                 break;
2130         case SCTP_ASSOCINFO:
2131                 {
2132                         struct sctp_assocparams *sasoc;
2133
2134                         SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, *optsize);
2135                         SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id);
2136
2137                         if (stcb) {
2138                                 sasoc->sasoc_asocmaxrxt = stcb->asoc.max_send_times;
2139                                 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets;
2140                                 sasoc->sasoc_peer_rwnd = stcb->asoc.peers_rwnd;
2141                                 sasoc->sasoc_local_rwnd = stcb->asoc.my_rwnd;
2142                                 sasoc->sasoc_cookie_life = TICKS_TO_MSEC(stcb->asoc.cookie_life);
2143                                 sasoc->sasoc_sack_delay = stcb->asoc.delayed_ack;
2144                                 sasoc->sasoc_sack_freq = stcb->asoc.sack_freq;
2145                                 SCTP_TCB_UNLOCK(stcb);
2146                         } else {
2147                                 SCTP_INP_RLOCK(inp);
2148                                 sasoc->sasoc_asocmaxrxt = inp->sctp_ep.max_send_times;
2149                                 sasoc->sasoc_number_peer_destinations = 0;
2150                                 sasoc->sasoc_peer_rwnd = 0;
2151                                 sasoc->sasoc_local_rwnd = sbspace(&inp->sctp_socket->so_rcv);
2152                                 sasoc->sasoc_cookie_life = TICKS_TO_MSEC(inp->sctp_ep.def_cookie_life);
2153                                 sasoc->sasoc_sack_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
2154                                 sasoc->sasoc_sack_freq = inp->sctp_ep.sctp_sack_freq;
2155                                 SCTP_INP_RUNLOCK(inp);
2156                         }
2157                         *optsize = sizeof(*sasoc);
2158                 }
2159                 break;
2160         case SCTP_DEFAULT_SEND_PARAM:
2161                 {
2162                         struct sctp_sndrcvinfo *s_info;
2163
2164                         SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, *optsize);
2165                         SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id);
2166
2167                         if (stcb) {
2168                                 *s_info = stcb->asoc.def_send;
2169                                 SCTP_TCB_UNLOCK(stcb);
2170                         } else {
2171                                 SCTP_INP_RLOCK(inp);
2172                                 *s_info = inp->def_send;
2173                                 SCTP_INP_RUNLOCK(inp);
2174                         }
2175                         *optsize = sizeof(*s_info);
2176                 }
2177                 break;
2178         case SCTP_INITMSG:
2179                 {
2180                         struct sctp_initmsg *sinit;
2181
2182                         SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, *optsize);
2183                         SCTP_INP_RLOCK(inp);
2184                         sinit->sinit_num_ostreams = inp->sctp_ep.pre_open_stream_count;
2185                         sinit->sinit_max_instreams = inp->sctp_ep.max_open_streams_intome;
2186                         sinit->sinit_max_attempts = inp->sctp_ep.max_init_times;
2187                         sinit->sinit_max_init_timeo = inp->sctp_ep.initial_init_rto_max;
2188                         SCTP_INP_RUNLOCK(inp);
2189                         *optsize = sizeof(*sinit);
2190                 }
2191                 break;
2192         case SCTP_PRIMARY_ADDR:
2193                 /* we allow a "get" operation on this */
2194                 {
2195                         struct sctp_setprim *ssp;
2196
2197                         SCTP_CHECK_AND_CAST(ssp, optval, struct sctp_setprim, *optsize);
2198                         SCTP_FIND_STCB(inp, stcb, ssp->ssp_assoc_id);
2199
2200                         if (stcb) {
2201                                 /* simply copy out the sockaddr_storage... */
2202                                 memcpy(&ssp->ssp_addr, &stcb->asoc.primary_destination->ro._l_addr,
2203                                     ((struct sockaddr *)&stcb->asoc.primary_destination->ro._l_addr)->sa_len);
2204                                 SCTP_TCB_UNLOCK(stcb);
2205                         } else {
2206                                 error = EINVAL;
2207                         }
2208                         *optsize = sizeof(*ssp);
2209                 }
2210                 break;
2211
2212         case SCTP_HMAC_IDENT:
2213                 {
2214                         struct sctp_hmacalgo *shmac;
2215                         sctp_hmaclist_t *hmaclist;
2216                         uint32_t size;
2217                         int i;
2218
2219                         SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, *optsize);
2220
2221                         SCTP_INP_RLOCK(inp);
2222                         hmaclist = inp->sctp_ep.local_hmacs;
2223                         if (hmaclist == NULL) {
2224                                 /* no HMACs to return */
2225                                 *optsize = sizeof(*shmac);
2226                                 SCTP_INP_RUNLOCK(inp);
2227                                 break;
2228                         }
2229                         /* is there room for all of the hmac ids? */
2230                         size = sizeof(*shmac) + (hmaclist->num_algo *
2231                             sizeof(shmac->shmac_idents[0]));
2232                         if ((size_t)(*optsize) < size) {
2233                                 error = EINVAL;
2234                                 SCTP_INP_RUNLOCK(inp);
2235                                 break;
2236                         }
2237                         /* copy in the list */
2238                         for (i = 0; i < hmaclist->num_algo; i++)
2239                                 shmac->shmac_idents[i] = hmaclist->hmac[i];
2240                         SCTP_INP_RUNLOCK(inp);
2241                         *optsize = size;
2242                         break;
2243                 }
2244         case SCTP_AUTH_ACTIVE_KEY:
2245                 {
2246                         struct sctp_authkeyid *scact;
2247
2248                         SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, *optsize);
2249                         SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id);
2250
2251                         if (stcb) {
2252                                 /* get the active key on the assoc */
2253                                 scact->scact_keynumber = stcb->asoc.authinfo.assoc_keyid;
2254                                 SCTP_TCB_UNLOCK(stcb);
2255                         } else {
2256                                 /* get the endpoint active key */
2257                                 SCTP_INP_RLOCK(inp);
2258                                 scact->scact_keynumber = inp->sctp_ep.default_keyid;
2259                                 SCTP_INP_RUNLOCK(inp);
2260                         }
2261                         *optsize = sizeof(*scact);
2262                         break;
2263                 }
2264         case SCTP_LOCAL_AUTH_CHUNKS:
2265                 {
2266                         struct sctp_authchunks *sac;
2267                         sctp_auth_chklist_t *chklist = NULL;
2268                         size_t size = 0;
2269
2270                         SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize);
2271                         SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id);
2272
2273                         if (stcb) {
2274                                 /* get off the assoc */
2275                                 chklist = stcb->asoc.local_auth_chunks;
2276                                 /* is there enough space? */
2277                                 size = sctp_auth_get_chklist_size(chklist);
2278                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2279                                         error = EINVAL;
2280                                 } else {
2281                                         /* copy in the chunks */
2282                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2283                                 }
2284                                 SCTP_TCB_UNLOCK(stcb);
2285                         } else {
2286                                 /* get off the endpoint */
2287                                 SCTP_INP_RLOCK(inp);
2288                                 chklist = inp->sctp_ep.local_auth_chunks;
2289                                 /* is there enough space? */
2290                                 size = sctp_auth_get_chklist_size(chklist);
2291                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2292                                         error = EINVAL;
2293                                 } else {
2294                                         /* copy in the chunks */
2295                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2296                                 }
2297                                 SCTP_INP_RUNLOCK(inp);
2298                         }
2299                         *optsize = sizeof(struct sctp_authchunks) + size;
2300                         break;
2301                 }
2302         case SCTP_PEER_AUTH_CHUNKS:
2303                 {
2304                         struct sctp_authchunks *sac;
2305                         sctp_auth_chklist_t *chklist = NULL;
2306                         size_t size = 0;
2307
2308                         SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize);
2309                         SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id);
2310
2311                         if (stcb) {
2312                                 /* get off the assoc */
2313                                 chklist = stcb->asoc.peer_auth_chunks;
2314                                 /* is there enough space? */
2315                                 size = sctp_auth_get_chklist_size(chklist);
2316                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2317                                         error = EINVAL;
2318                                 } else {
2319                                         /* copy in the chunks */
2320                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2321                                 }
2322                                 SCTP_TCB_UNLOCK(stcb);
2323                         } else {
2324                                 error = ENOENT;
2325                         }
2326                         *optsize = sizeof(struct sctp_authchunks) + size;
2327                         break;
2328                 }
2329
2330
2331         default:
2332                 error = ENOPROTOOPT;
2333                 *optsize = 0;
2334                 break;
2335         }                       /* end switch (sopt->sopt_name) */
2336         return (error);
2337 }
2338
2339 static int
2340 sctp_setopt(struct socket *so, int optname, void *optval, size_t optsize,
2341     void *p)
2342 {
2343         int error, set_opt;
2344         uint32_t *mopt;
2345         struct sctp_tcb *stcb = NULL;
2346         struct sctp_inpcb *inp;
2347         uint32_t vrf_id;
2348
2349         if (optval == NULL) {
2350                 SCTP_PRINTF("optval is NULL\n");
2351                 return (EINVAL);
2352         }
2353         inp = (struct sctp_inpcb *)so->so_pcb;
2354         if (inp == 0) {
2355                 SCTP_PRINTF("inp is NULL?\n");
2356                 return EINVAL;
2357         }
2358         vrf_id = inp->def_vrf_id;
2359
2360         error = 0;
2361         switch (optname) {
2362         case SCTP_NODELAY:
2363         case SCTP_AUTOCLOSE:
2364         case SCTP_AUTO_ASCONF:
2365         case SCTP_EXPLICIT_EOR:
2366         case SCTP_DISABLE_FRAGMENTS:
2367         case SCTP_USE_EXT_RCVINFO:
2368         case SCTP_I_WANT_MAPPED_V4_ADDR:
2369                 /* copy in the option value */
2370                 SCTP_CHECK_AND_CAST(mopt, optval, uint32_t, optsize);
2371                 set_opt = 0;
2372                 if (error)
2373                         break;
2374                 switch (optname) {
2375                 case SCTP_DISABLE_FRAGMENTS:
2376                         set_opt = SCTP_PCB_FLAGS_NO_FRAGMENT;
2377                         break;
2378                 case SCTP_AUTO_ASCONF:
2379                         set_opt = SCTP_PCB_FLAGS_AUTO_ASCONF;
2380                         break;
2381                 case SCTP_EXPLICIT_EOR:
2382                         set_opt = SCTP_PCB_FLAGS_EXPLICIT_EOR;
2383                         break;
2384                 case SCTP_USE_EXT_RCVINFO:
2385                         set_opt = SCTP_PCB_FLAGS_EXT_RCVINFO;
2386                         break;
2387                 case SCTP_I_WANT_MAPPED_V4_ADDR:
2388                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2389                                 set_opt = SCTP_PCB_FLAGS_NEEDS_MAPPED_V4;
2390                         } else {
2391                                 return (EINVAL);
2392                         }
2393                         break;
2394                 case SCTP_NODELAY:
2395                         set_opt = SCTP_PCB_FLAGS_NODELAY;
2396                         break;
2397                 case SCTP_AUTOCLOSE:
2398                         set_opt = SCTP_PCB_FLAGS_AUTOCLOSE;
2399                         /*
2400                          * The value is in ticks. Note this does not effect
2401                          * old associations, only new ones.
2402                          */
2403                         inp->sctp_ep.auto_close_time = SEC_TO_TICKS(*mopt);
2404                         break;
2405                 }
2406                 SCTP_INP_WLOCK(inp);
2407                 if (*mopt != 0) {
2408                         sctp_feature_on(inp, set_opt);
2409                 } else {
2410                         sctp_feature_off(inp, set_opt);
2411                 }
2412                 SCTP_INP_WUNLOCK(inp);
2413                 break;
2414         case SCTP_PARTIAL_DELIVERY_POINT:
2415                 {
2416                         uint32_t *value;
2417
2418                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, optsize);
2419                         if (*value > SCTP_SB_LIMIT_RCV(so)) {
2420                                 error = EINVAL;
2421                                 break;
2422                         }
2423                         inp->partial_delivery_point = *value;
2424                 }
2425                 break;
2426         case SCTP_FRAGMENT_INTERLEAVE:
2427                 /* not yet until we re-write sctp_recvmsg() */
2428                 {
2429                         uint32_t *level;
2430
2431                         SCTP_CHECK_AND_CAST(level, optval, uint32_t, optsize);
2432                         if (*level == SCTP_FRAG_LEVEL_2) {
2433                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2434                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2435                         } else if (*level == SCTP_FRAG_LEVEL_1) {
2436                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2437                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2438                         } else if (*level == SCTP_FRAG_LEVEL_0) {
2439                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2440                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2441
2442                         } else {
2443                                 error = EINVAL;
2444                         }
2445                 }
2446                 break;
2447         case SCTP_CMT_ON_OFF:
2448                 {
2449                         struct sctp_assoc_value *av;
2450
2451                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2452                         if (sctp_cmt_on_off) {
2453                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2454                                 if (stcb) {
2455                                         stcb->asoc.sctp_cmt_on_off = (uint8_t) av->assoc_value;
2456                                         SCTP_TCB_UNLOCK(stcb);
2457                                 } else {
2458                                         error = ENOTCONN;
2459                                 }
2460                         } else {
2461                                 error = ENOPROTOOPT;
2462                         }
2463                 }
2464                 break;
2465         case SCTP_CLR_STAT_LOG:
2466 #ifdef SCTP_STAT_LOGGING
2467                 sctp_clr_stat_log();
2468 #else
2469                 error = EOPNOTSUPP;
2470 #endif
2471                 break;
2472         case SCTP_CONTEXT:
2473                 {
2474                         struct sctp_assoc_value *av;
2475
2476                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2477                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2478
2479                         if (stcb) {
2480                                 stcb->asoc.context = av->assoc_value;
2481                                 SCTP_TCB_UNLOCK(stcb);
2482                         } else {
2483                                 SCTP_INP_WLOCK(inp);
2484                                 inp->sctp_context = av->assoc_value;
2485                                 SCTP_INP_WUNLOCK(inp);
2486                         }
2487                 }
2488                 break;
2489         case SCTP_VRF_ID:
2490                 {
2491                         uint32_t *vrf_id;
2492
2493                         SCTP_CHECK_AND_CAST(vrf_id, optval, uint32_t, optsize);
2494                         if (*vrf_id > SCTP_MAX_VRF_ID) {
2495                                 error = EINVAL;
2496                                 break;
2497                         }
2498                         inp->def_vrf_id = *vrf_id;
2499                         break;
2500                 }
2501         case SCTP_DEL_VRF_ID:
2502                 {
2503                         error = EOPNOTSUPP;
2504                         break;
2505                 }
2506         case SCTP_ADD_VRF_ID:
2507                 {
2508                         error = EOPNOTSUPP;
2509                         break;
2510                 }
2511
2512         case SCTP_DELAYED_ACK_TIME:
2513                 {
2514                         struct sctp_assoc_value *tm;
2515
2516                         SCTP_CHECK_AND_CAST(tm, optval, struct sctp_assoc_value, optsize);
2517                         SCTP_FIND_STCB(inp, stcb, tm->assoc_id);
2518
2519                         if (stcb) {
2520                                 stcb->asoc.delayed_ack = tm->assoc_value;
2521                                 SCTP_TCB_UNLOCK(stcb);
2522                         } else {
2523                                 SCTP_INP_WLOCK(inp);
2524                                 inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(tm->assoc_value);
2525                                 SCTP_INP_WUNLOCK(inp);
2526                         }
2527                         break;
2528                 }
2529         case SCTP_AUTH_CHUNK:
2530                 {
2531                         struct sctp_authchunk *sauth;
2532
2533                         SCTP_CHECK_AND_CAST(sauth, optval, struct sctp_authchunk, optsize);
2534
2535                         SCTP_INP_WLOCK(inp);
2536                         if (sctp_auth_add_chunk(sauth->sauth_chunk, inp->sctp_ep.local_auth_chunks))
2537                                 error = EINVAL;
2538                         SCTP_INP_WUNLOCK(inp);
2539                         break;
2540                 }
2541         case SCTP_AUTH_KEY:
2542                 {
2543                         struct sctp_authkey *sca;
2544                         struct sctp_keyhead *shared_keys;
2545                         sctp_sharedkey_t *shared_key;
2546                         sctp_key_t *key = NULL;
2547                         size_t size;
2548
2549                         SCTP_CHECK_AND_CAST(sca, optval, struct sctp_authkey, optsize);
2550                         SCTP_FIND_STCB(inp, stcb, sca->sca_assoc_id);
2551                         size = optsize - sizeof(*sca);
2552
2553                         if (stcb) {
2554                                 /* set it on the assoc */
2555                                 shared_keys = &stcb->asoc.shared_keys;
2556                                 /* clear the cached keys for this key id */
2557                                 sctp_clear_cachedkeys(stcb, sca->sca_keynumber);
2558                                 /*
2559                                  * create the new shared key and
2560                                  * insert/replace it
2561                                  */
2562                                 if (size > 0) {
2563                                         key = sctp_set_key(sca->sca_key, (uint32_t) size);
2564                                         if (key == NULL) {
2565                                                 error = ENOMEM;
2566                                                 SCTP_TCB_UNLOCK(stcb);
2567                                                 break;
2568                                         }
2569                                 }
2570                                 shared_key = sctp_alloc_sharedkey();
2571                                 if (shared_key == NULL) {
2572                                         sctp_free_key(key);
2573                                         error = ENOMEM;
2574                                         SCTP_TCB_UNLOCK(stcb);
2575                                         break;
2576                                 }
2577                                 shared_key->key = key;
2578                                 shared_key->keyid = sca->sca_keynumber;
2579                                 sctp_insert_sharedkey(shared_keys, shared_key);
2580                                 SCTP_TCB_UNLOCK(stcb);
2581                         } else {
2582                                 /* set it on the endpoint */
2583                                 SCTP_INP_WLOCK(inp);
2584                                 shared_keys = &inp->sctp_ep.shared_keys;
2585                                 /*
2586                                  * clear the cached keys on all assocs for
2587                                  * this key id
2588                                  */
2589                                 sctp_clear_cachedkeys_ep(inp, sca->sca_keynumber);
2590                                 /*
2591                                  * create the new shared key and
2592                                  * insert/replace it
2593                                  */
2594                                 if (size > 0) {
2595                                         key = sctp_set_key(sca->sca_key, (uint32_t) size);
2596                                         if (key == NULL) {
2597                                                 error = ENOMEM;
2598                                                 SCTP_INP_WUNLOCK(inp);
2599                                                 break;
2600                                         }
2601                                 }
2602                                 shared_key = sctp_alloc_sharedkey();
2603                                 if (shared_key == NULL) {
2604                                         sctp_free_key(key);
2605                                         error = ENOMEM;
2606                                         SCTP_INP_WUNLOCK(inp);
2607                                         break;
2608                                 }
2609                                 shared_key->key = key;
2610                                 shared_key->keyid = sca->sca_keynumber;
2611                                 sctp_insert_sharedkey(shared_keys, shared_key);
2612                                 SCTP_INP_WUNLOCK(inp);
2613                         }
2614                         break;
2615                 }
2616         case SCTP_HMAC_IDENT:
2617                 {
2618                         struct sctp_hmacalgo *shmac;
2619                         sctp_hmaclist_t *hmaclist;
2620                         uint32_t hmacid;
2621                         size_t size, i;
2622
2623                         SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, optsize);
2624                         size = (optsize - sizeof(*shmac)) / sizeof(shmac->shmac_idents[0]);
2625                         hmaclist = sctp_alloc_hmaclist(size);
2626                         if (hmaclist == NULL) {
2627                                 error = ENOMEM;
2628                                 break;
2629                         }
2630                         for (i = 0; i < size; i++) {
2631                                 hmacid = shmac->shmac_idents[i];
2632                                 if (sctp_auth_add_hmacid(hmaclist, (uint16_t) hmacid)) {
2633                                          /* invalid HMACs were found */ ;
2634                                         error = EINVAL;
2635                                         sctp_free_hmaclist(hmaclist);
2636                                         goto sctp_set_hmac_done;
2637                                 }
2638                         }
2639                         /* set it on the endpoint */
2640                         SCTP_INP_WLOCK(inp);
2641                         if (inp->sctp_ep.local_hmacs)
2642                                 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
2643                         inp->sctp_ep.local_hmacs = hmaclist;
2644                         SCTP_INP_WUNLOCK(inp);
2645         sctp_set_hmac_done:
2646                         break;
2647                 }
2648         case SCTP_AUTH_ACTIVE_KEY:
2649                 {
2650                         struct sctp_authkeyid *scact;
2651
2652                         SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, optsize);
2653                         SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id);
2654
2655                         /* set the active key on the right place */
2656                         if (stcb) {
2657                                 /* set the active key on the assoc */
2658                                 if (sctp_auth_setactivekey(stcb, scact->scact_keynumber))
2659                                         error = EINVAL;
2660                                 SCTP_TCB_UNLOCK(stcb);
2661                         } else {
2662                                 /* set the active key on the endpoint */
2663                                 SCTP_INP_WLOCK(inp);
2664                                 if (sctp_auth_setactivekey_ep(inp, scact->scact_keynumber))
2665                                         error = EINVAL;
2666                                 SCTP_INP_WUNLOCK(inp);
2667                         }
2668                         break;
2669                 }
2670         case SCTP_AUTH_DELETE_KEY:
2671                 {
2672                         struct sctp_authkeyid *scdel;
2673
2674                         SCTP_CHECK_AND_CAST(scdel, optval, struct sctp_authkeyid, optsize);
2675                         SCTP_FIND_STCB(inp, stcb, scdel->scact_assoc_id);
2676
2677                         /* delete the key from the right place */
2678                         if (stcb) {
2679                                 if (sctp_delete_sharedkey(stcb, scdel->scact_keynumber))
2680                                         error = EINVAL;
2681                                 SCTP_TCB_UNLOCK(stcb);
2682                         } else {
2683                                 SCTP_INP_WLOCK(inp);
2684                                 if (sctp_delete_sharedkey_ep(inp, scdel->scact_keynumber))
2685                                         error = EINVAL;
2686                                 SCTP_INP_WUNLOCK(inp);
2687                         }
2688                         break;
2689                 }
2690
2691         case SCTP_RESET_STREAMS:
2692                 {
2693                         struct sctp_stream_reset *strrst;
2694                         uint8_t send_in = 0, send_tsn = 0, send_out = 0;
2695                         int i;
2696
2697                         SCTP_CHECK_AND_CAST(strrst, optval, struct sctp_stream_reset, optsize);
2698                         SCTP_FIND_STCB(inp, stcb, strrst->strrst_assoc_id);
2699
2700                         if (stcb == NULL) {
2701                                 error = ENOENT;
2702                                 break;
2703                         }
2704                         if (stcb->asoc.peer_supports_strreset == 0) {
2705                                 /*
2706                                  * Peer does not support it, we return
2707                                  * protocol not supported since this is true
2708                                  * for this feature and this peer, not the
2709                                  * socket request in general.
2710                                  */
2711                                 error = EPROTONOSUPPORT;
2712                                 SCTP_TCB_UNLOCK(stcb);
2713                                 break;
2714                         }
2715                         if (stcb->asoc.stream_reset_outstanding) {
2716                                 error = EALREADY;
2717                                 SCTP_TCB_UNLOCK(stcb);
2718                                 break;
2719                         }
2720                         if (strrst->strrst_flags == SCTP_RESET_LOCAL_RECV) {
2721                                 send_in = 1;
2722                         } else if (strrst->strrst_flags == SCTP_RESET_LOCAL_SEND) {
2723                                 send_out = 1;
2724                         } else if (strrst->strrst_flags == SCTP_RESET_BOTH) {
2725                                 send_in = 1;
2726                                 send_out = 1;
2727                         } else if (strrst->strrst_flags == SCTP_RESET_TSN) {
2728                                 send_tsn = 1;
2729                         } else {
2730                                 error = EINVAL;
2731                                 SCTP_TCB_UNLOCK(stcb);
2732                                 break;
2733                         }
2734                         for (i = 0; i < strrst->strrst_num_streams; i++) {
2735                                 if ((send_in) &&
2736
2737                                     (strrst->strrst_list[i] > stcb->asoc.streamincnt)) {
2738                                         error = EINVAL;
2739                                         goto get_out;
2740                                 }
2741                                 if ((send_out) &&
2742                                     (strrst->strrst_list[i] > stcb->asoc.streamoutcnt)) {
2743                                         error = EINVAL;
2744                                         goto get_out;
2745                                 }
2746                         }
2747                         if (error) {
2748                 get_out:
2749                                 SCTP_TCB_UNLOCK(stcb);
2750                                 break;
2751                         }
2752                         error = sctp_send_str_reset_req(stcb, strrst->strrst_num_streams,
2753                             strrst->strrst_list,
2754                             send_out, (stcb->asoc.str_reset_seq_in - 3),
2755                             send_in, send_tsn);
2756
2757                         sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_REQ);
2758                         SCTP_TCB_UNLOCK(stcb);
2759                 }
2760                 break;
2761
2762         case SCTP_CONNECT_X:
2763                 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) {
2764                         error = EINVAL;
2765                         break;
2766                 }
2767                 error = sctp_do_connect_x(so, inp, optval, optsize, p, 0);
2768                 break;
2769
2770         case SCTP_CONNECT_X_DELAYED:
2771                 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) {
2772                         error = EINVAL;
2773                         break;
2774                 }
2775                 error = sctp_do_connect_x(so, inp, optval, optsize, p, 1);
2776                 break;
2777
2778         case SCTP_CONNECT_X_COMPLETE:
2779                 {
2780                         struct sockaddr *sa;
2781                         struct sctp_nets *net;
2782
2783                         /* FIXME MT: check correct? */
2784                         SCTP_CHECK_AND_CAST(sa, optval, struct sockaddr, optsize);
2785
2786                         /* find tcb */
2787                         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
2788                                 SCTP_INP_RLOCK(inp);
2789                                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
2790                                 if (stcb) {
2791                                         SCTP_TCB_LOCK(stcb);
2792                                         net = sctp_findnet(stcb, sa);
2793                                 }
2794                                 SCTP_INP_RUNLOCK(inp);
2795                         } else {
2796                                 /*
2797                                  * We increment here since
2798                                  * sctp_findassociation_ep_addr() wil do a
2799                                  * decrement if it finds the stcb as long as
2800                                  * the locked tcb (last argument) is NOT a
2801                                  * TCB.. aka NULL.
2802                                  */
2803                                 SCTP_INP_INCR_REF(inp);
2804                                 stcb = sctp_findassociation_ep_addr(&inp, sa, &net, NULL, NULL);
2805                                 if (stcb == NULL) {
2806                                         SCTP_INP_DECR_REF(inp);
2807                                 }
2808                         }
2809
2810                         if (stcb == NULL) {
2811                                 error = ENOENT;
2812                                 break;
2813                         }
2814                         if (stcb->asoc.delayed_connection == 1) {
2815                                 stcb->asoc.delayed_connection = 0;
2816                                 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
2817                                 sctp_timer_stop(SCTP_TIMER_TYPE_INIT, inp, stcb,
2818                                     stcb->asoc.primary_destination,
2819                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_9);
2820                                 sctp_send_initiate(inp, stcb);
2821                         } else {
2822                                 /*
2823                                  * already expired or did not use delayed
2824                                  * connectx
2825                                  */
2826                                 error = EALREADY;
2827                         }
2828                         SCTP_TCB_UNLOCK(stcb);
2829                 }
2830                 break;
2831         case SCTP_MAXBURST:
2832                 {
2833                         uint8_t *burst;
2834
2835                         SCTP_CHECK_AND_CAST(burst, optval, uint8_t, optsize);
2836
2837                         SCTP_INP_WLOCK(inp);
2838                         if (*burst) {
2839                                 inp->sctp_ep.max_burst = *burst;
2840                         }
2841                         SCTP_INP_WUNLOCK(inp);
2842                 }
2843                 break;
2844         case SCTP_MAXSEG:
2845                 {
2846                         struct sctp_assoc_value *av;
2847                         int ovh;
2848
2849                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2850                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2851
2852                         if (stcb) {
2853                                 error = EINVAL;
2854                                 SCTP_TCB_UNLOCK(stcb);
2855                         } else {
2856                                 SCTP_INP_WLOCK(inp);
2857                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2858                                         ovh = SCTP_MED_OVERHEAD;
2859                                 } else {
2860                                         ovh = SCTP_MED_V4_OVERHEAD;
2861                                 }
2862                                 /*
2863                                  * FIXME MT: I think this is not in tune
2864                                  * with the API ID
2865                                  */
2866                                 if (av->assoc_value) {
2867                                         inp->sctp_frag_point = (av->assoc_value + ovh);
2868                                 } else {
2869                                         error = EINVAL;
2870                                 }
2871                                 SCTP_INP_WUNLOCK(inp);
2872                         }
2873                 }
2874                 break;
2875         case SCTP_EVENTS:
2876                 {
2877                         struct sctp_event_subscribe *events;
2878
2879                         SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, optsize);
2880
2881                         SCTP_INP_WLOCK(inp);
2882                         if (events->sctp_data_io_event) {
2883                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
2884                         } else {
2885                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
2886                         }
2887
2888                         if (events->sctp_association_event) {
2889                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
2890                         } else {
2891                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
2892                         }
2893
2894                         if (events->sctp_address_event) {
2895                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
2896                         } else {
2897                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
2898                         }
2899
2900                         if (events->sctp_send_failure_event) {
2901                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
2902                         } else {
2903                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
2904                         }
2905
2906                         if (events->sctp_peer_error_event) {
2907                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR);
2908                         } else {
2909                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPEERERR);
2910                         }
2911
2912                         if (events->sctp_shutdown_event) {
2913                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
2914                         } else {
2915                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
2916                         }
2917
2918                         if (events->sctp_partial_delivery_event) {
2919                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
2920                         } else {
2921                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
2922                         }
2923
2924                         if (events->sctp_adaptation_layer_event) {
2925                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
2926                         } else {
2927                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
2928                         }
2929
2930                         if (events->sctp_authentication_event) {
2931                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT);
2932                         } else {
2933                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTHEVNT);
2934                         }
2935
2936                         if (events->sctp_stream_reset_events) {
2937                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
2938                         } else {
2939                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
2940                         }
2941                         SCTP_INP_WUNLOCK(inp);
2942                 }
2943                 break;
2944
2945         case SCTP_ADAPTATION_LAYER:
2946                 {
2947                         struct sctp_setadaptation *adap_bits;
2948
2949                         SCTP_CHECK_AND_CAST(adap_bits, optval, struct sctp_setadaptation, optsize);
2950                         SCTP_INP_WLOCK(inp);
2951                         inp->sctp_ep.adaptation_layer_indicator = adap_bits->ssb_adaptation_ind;
2952                         SCTP_INP_WUNLOCK(inp);
2953                 }
2954                 break;
2955 #ifdef SCTP_DEBUG
2956         case SCTP_SET_INITIAL_DBG_SEQ:
2957                 {
2958                         uint32_t *vvv;
2959
2960                         SCTP_CHECK_AND_CAST(vvv, optval, uint32_t, optsize);
2961                         SCTP_INP_WLOCK(inp);
2962                         inp->sctp_ep.initial_sequence_debug = *vvv;
2963                         SCTP_INP_WUNLOCK(inp);
2964                 }
2965                 break;
2966 #endif
2967         case SCTP_DEFAULT_SEND_PARAM:
2968                 {
2969                         struct sctp_sndrcvinfo *s_info;
2970
2971                         SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, optsize);
2972                         SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id);
2973
2974                         if (stcb) {
2975                                 if (s_info->sinfo_stream <= stcb->asoc.streamoutcnt) {
2976                                         stcb->asoc.def_send = *s_info;
2977                                 } else {
2978                                         error = EINVAL;
2979                                 }
2980                                 SCTP_TCB_UNLOCK(stcb);
2981                         } else {
2982                                 SCTP_INP_WLOCK(inp);
2983                                 inp->def_send = *s_info;
2984                                 SCTP_INP_WUNLOCK(inp);
2985                         }
2986                 }
2987                 break;
2988         case SCTP_PEER_ADDR_PARAMS:
2989                 /* Applys to the specific association */
2990                 {
2991                         struct sctp_paddrparams *paddrp;
2992                         struct sctp_nets *net;
2993
2994                         SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, optsize);
2995                         SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id);
2996                         net = NULL;
2997                         if (stcb) {
2998                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address);
2999                         } else {
3000                                 /*
3001                                  * We increment here since
3002                                  * sctp_findassociation_ep_addr() wil do a
3003                                  * decrement if it finds the stcb as long as
3004                                  * the locked tcb (last argument) is NOT a
3005                                  * TCB.. aka NULL.
3006                                  */
3007                                 SCTP_INP_INCR_REF(inp);
3008                                 stcb = sctp_findassociation_ep_addr(&inp,
3009                                     (struct sockaddr *)&paddrp->spp_address,
3010                                     &net, NULL, NULL);
3011                                 if (stcb == NULL) {
3012                                         SCTP_INP_DECR_REF(inp);
3013                                 }
3014                         }
3015
3016
3017                         if (stcb) {
3018                                 /************************TCB SPECIFIC SET ******************/
3019                                 /*
3020                                  * do we change the timer for HB, we run
3021                                  * only one?
3022                                  */
3023                                 if (paddrp->spp_hbinterval)
3024                                         stcb->asoc.heart_beat_delay = paddrp->spp_hbinterval;
3025                                 else if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO)
3026                                         stcb->asoc.heart_beat_delay = 0;
3027
3028                                 /* network sets ? */
3029                                 if (net) {
3030                                         /************************NET SPECIFIC SET ******************/
3031                                         if (paddrp->spp_flags & SPP_HB_DEMAND) {
3032                                                 /* on demand HB */
3033                                                 (void)sctp_send_hb(stcb, 1, net);
3034                                         }
3035                                         if (paddrp->spp_flags & SPP_HB_DISABLE) {
3036                                                 net->dest_state |= SCTP_ADDR_NOHB;
3037                                         }
3038                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3039                                                 net->dest_state &= ~SCTP_ADDR_NOHB;
3040                                         }
3041                                         if (paddrp->spp_flags & SPP_PMTUD_DISABLE) {
3042                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3043                                                         sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
3044                                                             SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10);
3045                                                 }
3046                                                 if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) {
3047                                                         net->mtu = paddrp->spp_pathmtu;
3048                                                         if (net->mtu < stcb->asoc.smallest_mtu) {
3049 #ifdef SCTP_PRINT_FOR_B_AND_M
3050                                                                 SCTP_PRINTF("SCTP_PMTU_DISABLE calls sctp_pathmtu_adjustment:%d\n",
3051                                                                     net->mtu);
3052 #endif
3053                                                                 sctp_pathmtu_adjustment(inp, stcb, net, net->mtu);
3054                                                         }
3055                                                 }
3056                                         }
3057                                         if (paddrp->spp_flags & SPP_PMTUD_ENABLE) {
3058                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3059                                                         sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
3060                                                 }
3061                                         }
3062                                         if (paddrp->spp_pathmaxrxt)
3063                                                 net->failure_threshold = paddrp->spp_pathmaxrxt;
3064 #ifdef INET
3065                                         if (paddrp->spp_flags & SPP_IPV4_TOS) {
3066                                                 if (net->ro._l_addr.sin.sin_family == AF_INET) {
3067                                                         net->tos_flowlabel = paddrp->spp_ipv4_tos & 0x000000fc;
3068                                                 }
3069                                         }
3070 #endif
3071 #ifdef INET6
3072                                         if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL) {
3073                                                 if (net->ro._l_addr.sin6.sin6_family == AF_INET6) {
3074                                                         net->tos_flowlabel = paddrp->spp_ipv6_flowlabel;
3075                                                 }
3076                                         }
3077 #endif
3078                                 } else {
3079                                         /************************ASSOC ONLY -- NO NET SPECIFIC SET ******************/
3080                                         if (paddrp->spp_pathmaxrxt)
3081                                                 stcb->asoc.def_net_failure = paddrp->spp_pathmaxrxt;
3082
3083                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3084                                                 /* Turn back on the timer */
3085                                                 stcb->asoc.hb_is_disabled = 0;
3086                                                 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
3087                                         }
3088                                         if (paddrp->spp_flags & SPP_HB_DISABLE) {
3089                                                 int cnt_of_unconf = 0;
3090                                                 struct sctp_nets *lnet;
3091
3092                                                 stcb->asoc.hb_is_disabled = 1;
3093                                                 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
3094                                                         if (lnet->dest_state & SCTP_ADDR_UNCONFIRMED) {
3095                                                                 cnt_of_unconf++;
3096                                                         }
3097                                                 }
3098                                                 /*
3099                                                  * stop the timer ONLY if we
3100                                                  * have no unconfirmed
3101                                                  * addresses
3102                                                  */
3103                                                 if (cnt_of_unconf == 0) {
3104                                                         sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_11);
3105                                                 }
3106                                         }
3107                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3108                                                 /* start up the timer. */
3109                                                 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
3110                                         }
3111 #ifdef INET
3112                                         if (paddrp->spp_flags & SPP_IPV4_TOS)
3113                                                 stcb->asoc.default_tos = paddrp->spp_ipv4_tos & 0x000000fc;
3114 #endif
3115 #ifdef INET6
3116                                         if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL)
3117                                                 stcb->asoc.default_flowlabel = paddrp->spp_ipv6_flowlabel;
3118 #endif
3119
3120                                 }
3121                                 SCTP_TCB_UNLOCK(stcb);
3122                         } else {
3123                                 /************************NO TCB, SET TO default stuff ******************/
3124                                 SCTP_INP_WLOCK(inp);
3125                                 /*
3126                                  * For the TOS/FLOWLABEL stuff you set it
3127                                  * with the options on the socket
3128                                  */
3129                                 if (paddrp->spp_pathmaxrxt) {
3130                                         inp->sctp_ep.def_net_failure = paddrp->spp_pathmaxrxt;
3131                                 }
3132                                 if (paddrp->spp_flags & SPP_HB_ENABLE) {
3133                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(paddrp->spp_hbinterval);
3134                                         sctp_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
3135                                 } else if (paddrp->spp_flags & SPP_HB_DISABLE) {
3136                                         sctp_feature_on(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
3137                                 }
3138                                 SCTP_INP_WUNLOCK(inp);
3139                         }
3140                 }
3141                 break;
3142         case SCTP_RTOINFO:
3143                 {
3144                         struct sctp_rtoinfo *srto;
3145                         uint32_t new_init, new_min, new_max;
3146
3147                         SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, optsize);
3148                         SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id);
3149
3150                         if (stcb) {
3151                                 if (srto->srto_initial)
3152                                         new_init = srto->srto_initial;
3153                                 else
3154                                         new_init = stcb->asoc.initial_rto;
3155                                 if (srto->srto_max)
3156                                         new_max = srto->srto_max;
3157                                 else
3158                                         new_max = stcb->asoc.maxrto;
3159                                 if (srto->srto_min)
3160                                         new_min = srto->srto_min;
3161                                 else
3162                                         new_min = stcb->asoc.minrto;
3163                                 if ((new_min <= new_init) && (new_init <= new_max)) {
3164                                         stcb->asoc.initial_rto = new_init;
3165                                         stcb->asoc.maxrto = new_max;
3166                                         stcb->asoc.minrto = new_min;
3167                                 } else {
3168                                         error = EDOM;
3169                                 }
3170                                 SCTP_TCB_UNLOCK(stcb);
3171                         } else {
3172                                 SCTP_INP_WLOCK(inp);
3173                                 if (srto->srto_initial)
3174                                         new_init = srto->srto_initial;
3175                                 else
3176                                         new_init = inp->sctp_ep.initial_rto;
3177                                 if (srto->srto_max)
3178                                         new_max = srto->srto_max;
3179                                 else
3180                                         new_max = inp->sctp_ep.sctp_maxrto;
3181                                 if (srto->srto_min)
3182                                         new_min = srto->srto_min;
3183                                 else
3184                                         new_min = inp->sctp_ep.sctp_minrto;
3185                                 if ((new_min <= new_init) && (new_init <= new_max)) {
3186                                         inp->sctp_ep.initial_rto = new_init;
3187                                         inp->sctp_ep.sctp_maxrto = new_max;
3188                                         inp->sctp_ep.sctp_minrto = new_min;
3189                                 } else {
3190                                         error = EDOM;
3191                                 }
3192                                 SCTP_INP_WUNLOCK(inp);
3193                         }
3194                 }
3195                 break;
3196         case SCTP_ASSOCINFO:
3197                 {
3198                         struct sctp_assocparams *sasoc;
3199
3200                         SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, optsize);
3201                         SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id);
3202
3203                         if (stcb) {
3204                                 if (sasoc->sasoc_asocmaxrxt)
3205                                         stcb->asoc.max_send_times = sasoc->sasoc_asocmaxrxt;
3206                                 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets;
3207                                 sasoc->sasoc_peer_rwnd = 0;
3208                                 sasoc->sasoc_local_rwnd = 0;
3209                                 if (sasoc->sasoc_cookie_life)
3210                                         stcb->asoc.cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life);
3211                                 stcb->asoc.delayed_ack = sasoc->sasoc_sack_delay;
3212                                 if (sasoc->sasoc_sack_freq) {
3213                                         stcb->asoc.sack_freq = sasoc->sasoc_sack_freq;
3214                                 }
3215                                 SCTP_TCB_UNLOCK(stcb);
3216                         } else {
3217                                 SCTP_INP_WLOCK(inp);
3218                                 if (sasoc->sasoc_asocmaxrxt)
3219                                         inp->sctp_ep.max_send_times = sasoc->sasoc_asocmaxrxt;
3220                                 sasoc->sasoc_number_peer_destinations = 0;
3221                                 sasoc->sasoc_peer_rwnd = 0;
3222                                 sasoc->sasoc_local_rwnd = 0;
3223                                 if (sasoc->sasoc_cookie_life)
3224                                         inp->sctp_ep.def_cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life);
3225                                 inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(sasoc->sasoc_sack_delay);
3226                                 if (sasoc->sasoc_sack_freq) {
3227                                         inp->sctp_ep.sctp_sack_freq = sasoc->sasoc_sack_freq;
3228                                 }
3229                                 SCTP_INP_WUNLOCK(inp);
3230                         }
3231                 }
3232                 break;
3233         case SCTP_INITMSG:
3234                 {
3235                         struct sctp_initmsg *sinit;
3236
3237                         SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, optsize);
3238                         SCTP_INP_WLOCK(inp);
3239                         if (sinit->sinit_num_ostreams)
3240                                 inp->sctp_ep.pre_open_stream_count = sinit->sinit_num_ostreams;
3241
3242                         if (sinit->sinit_max_instreams)
3243                                 inp->sctp_ep.max_open_streams_intome = sinit->sinit_max_instreams;
3244
3245                         if (sinit->sinit_max_attempts)
3246                                 inp->sctp_ep.max_init_times = sinit->sinit_max_attempts;
3247
3248                         if (sinit->sinit_max_init_timeo)
3249                                 inp->sctp_ep.initial_init_rto_max = sinit->sinit_max_init_timeo;
3250                         SCTP_INP_WUNLOCK(inp);
3251                 }
3252                 break;
3253         case SCTP_PRIMARY_ADDR:
3254                 {
3255                         struct sctp_setprim *spa;
3256                         struct sctp_nets *net, *lnet;
3257
3258                         SCTP_CHECK_AND_CAST(spa, optval, struct sctp_setprim, optsize);
3259                         SCTP_FIND_STCB(inp, stcb, spa->ssp_assoc_id);
3260
3261                         net = NULL;
3262                         if (stcb) {
3263                                 net = sctp_findnet(stcb, (struct sockaddr *)&spa->ssp_addr);
3264                         } else {
3265                                 /*
3266                                  * We increment here since
3267                                  * sctp_findassociation_ep_addr() wil do a
3268                                  * decrement if it finds the stcb as long as
3269                                  * the locked tcb (last argument) is NOT a
3270                                  * TCB.. aka NULL.
3271                                  */
3272                                 SCTP_INP_INCR_REF(inp);
3273                                 stcb = sctp_findassociation_ep_addr(&inp,
3274                                     (struct sockaddr *)&spa->ssp_addr,
3275                                     &net, NULL, NULL);
3276                                 if (stcb == NULL) {
3277                                         SCTP_INP_DECR_REF(inp);
3278                                 }
3279                         }
3280
3281                         if ((stcb) && (net)) {
3282                                 if ((net != stcb->asoc.primary_destination) &&
3283                                     (!(net->dest_state & SCTP_ADDR_UNCONFIRMED))) {
3284                                         /* Ok we need to set it */
3285                                         lnet = stcb->asoc.primary_destination;
3286                                         if (sctp_set_primary_addr(stcb, (struct sockaddr *)NULL, net) == 0) {
3287                                                 if (net->dest_state & SCTP_ADDR_SWITCH_PRIMARY) {
3288                                                         net->dest_state |= SCTP_ADDR_DOUBLE_SWITCH;
3289                                                 }
3290                                                 net->dest_state |= SCTP_ADDR_SWITCH_PRIMARY;
3291                                         }
3292                                 }
3293                         } else {
3294                                 error = EINVAL;
3295                         }
3296                         if (stcb) {
3297                                 SCTP_TCB_UNLOCK(stcb);
3298                         }
3299                 }
3300                 break;
3301         case SCTP_SET_DYNAMIC_PRIMARY:
3302                 {
3303                         union sctp_sockstore *ss;
3304
3305                         error = priv_check_cred(curthread->td_ucred,
3306                             PRIV_NETINET_RESERVEDPORT,
3307                             SUSER_ALLOWJAIL);
3308                         if (error)
3309                                 break;
3310
3311                         SCTP_CHECK_AND_CAST(ss, optval, union sctp_sockstore, optsize);
3312                         /* SUPER USER CHECK? */
3313                         error = sctp_dynamic_set_primary(&ss->sa, vrf_id);
3314                 }
3315                 break;
3316         case SCTP_SET_PEER_PRIMARY_ADDR:
3317                 {
3318                         struct sctp_setpeerprim *sspp;
3319
3320                         SCTP_CHECK_AND_CAST(sspp, optval, struct sctp_setpeerprim, optsize);
3321                         SCTP_FIND_STCB(inp, stcb, sspp->sspp_assoc_id);
3322                         if (stcb != NULL) {
3323                                 if (sctp_set_primary_ip_address_sa(stcb, (struct sockaddr *)&sspp->sspp_addr) != 0) {
3324                                         error = EINVAL;
3325                                 }
3326                                 SCTP_TCB_UNLOCK(stcb);
3327                         } else {
3328                                 error = EINVAL;
3329                         }
3330
3331                 }
3332                 break;
3333         case SCTP_BINDX_ADD_ADDR:
3334                 {
3335                         struct sctp_getaddresses *addrs;
3336                         struct sockaddr *addr_touse;
3337                         struct sockaddr_in sin;
3338
3339                         SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses, optsize);
3340
3341                         /* see if we're bound all already! */
3342                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
3343                                 error = EINVAL;
3344                                 break;
3345                         }
3346                         /* Is the VRF one we have */
3347                         addr_touse = addrs->addr;
3348 #if defined(INET6)
3349                         if (addrs->addr->sa_family == AF_INET6) {
3350                                 struct sockaddr_in6 *sin6;
3351
3352                                 sin6 = (struct sockaddr_in6 *)addr_touse;
3353                                 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
3354                                         in6_sin6_2_sin(&sin, sin6);
3355                                         addr_touse = (struct sockaddr *)&sin;
3356                                 }
3357                         }
3358 #endif
3359                         if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
3360                                 if (p == NULL) {
3361                                         /* Can't get proc for Net/Open BSD */
3362                                         error = EINVAL;
3363                                         break;
3364                                 }
3365                                 error = sctp_inpcb_bind(so, addr_touse, p);
3366                                 break;
3367                         }
3368                         /*
3369                          * No locks required here since bind and mgmt_ep_sa
3370                          * all do their own locking. If we do something for
3371                          * the FIX: below we may need to lock in that case.
3372                          */
3373                         if (addrs->sget_assoc_id == 0) {
3374                                 /* add the address */
3375                                 struct sctp_inpcb *lep;
3376
3377                                 ((struct sockaddr_in *)addr_touse)->sin_port = inp->sctp_lport;
3378                                 lep = sctp_pcb_findep(addr_touse, 1, 0, vrf_id);
3379                                 if (lep != NULL) {
3380                                         /*
3381                                          * We must decrement the refcount
3382                                          * since we have the ep already and
3383                                          * are binding. No remove going on
3384                                          * here.
3385                                          */
3386                                         SCTP_INP_DECR_REF(inp);
3387                                 }
3388                                 if (lep == inp) {
3389                                         /* already bound to it.. ok */
3390                                         break;
3391                                 } else if (lep == NULL) {
3392                                         ((struct sockaddr_in *)addr_touse)->sin_port = 0;
3393                                         error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
3394                                             SCTP_ADD_IP_ADDRESS, vrf_id);
3395                                 } else {
3396                                         error = EADDRNOTAVAIL;
3397                                 }
3398                                 if (error)
3399                                         break;
3400
3401                         } else {
3402                                 /*
3403                                  * FIX: decide whether we allow assoc based
3404                                  * bindx
3405                                  */
3406                         }
3407                 }
3408                 break;
3409         case SCTP_BINDX_REM_ADDR:
3410                 {
3411                         struct sctp_getaddresses *addrs;
3412                         struct sockaddr *addr_touse;
3413                         struct sockaddr_in sin;
3414
3415                         SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses, optsize);
3416                         /* see if we're bound all already! */
3417                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
3418                                 error = EINVAL;
3419                                 break;
3420                         }
3421                         addr_touse = addrs->addr;
3422 #if defined(INET6)
3423                         if (addrs->addr->sa_family == AF_INET6) {
3424                                 struct sockaddr_in6 *sin6;
3425
3426                                 sin6 = (struct sockaddr_in6 *)addr_touse;
3427                                 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
3428                                         in6_sin6_2_sin(&sin, sin6);
3429                                         addr_touse = (struct sockaddr *)&sin;
3430                                 }
3431                         }
3432 #endif
3433                         /*
3434                          * No lock required mgmt_ep_sa does its own locking.
3435                          * If the FIX: below is ever changed we may need to
3436                          * lock before calling association level binding.
3437                          */
3438                         if (addrs->sget_assoc_id == 0) {
3439                                 /* delete the address */
3440                                 error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
3441                                     SCTP_DEL_IP_ADDRESS,
3442                                     vrf_id);
3443                         } else {
3444                                 /*
3445                                  * FIX: decide whether we allow assoc based
3446                                  * bindx
3447                                  */
3448                         }
3449                 }
3450                 break;
3451         default:
3452                 error = ENOPROTOOPT;
3453                 break;
3454         }                       /* end switch (opt) */
3455         return (error);
3456 }
3457
3458
3459 int
3460 sctp_ctloutput(struct socket *so, struct sockopt *sopt)
3461 {
3462         void *optval = NULL;
3463         size_t optsize = 0;
3464         struct sctp_inpcb *inp;
3465         void *p;
3466         int error = 0;
3467
3468         inp = (struct sctp_inpcb *)so->so_pcb;
3469         if (inp == 0) {
3470                 /* I made the same as TCP since we are not setup? */
3471                 return (ECONNRESET);
3472         }
3473         if (sopt->sopt_level != IPPROTO_SCTP) {
3474                 /* wrong proto level... send back up to IP */
3475 #ifdef INET6
3476                 if (INP_CHECK_SOCKAF(so, AF_INET6))
3477                         error = ip6_ctloutput(so, sopt);
3478                 else
3479 #endif                          /* INET6 */
3480                         error = ip_ctloutput(so, sopt);
3481                 return (error);
3482         }
3483         optsize = sopt->sopt_valsize;
3484         if (optsize) {
3485                 SCTP_MALLOC(optval, void *, optsize, "SCTPSockOpt");
3486                 if (optval == NULL) {
3487                         return (ENOBUFS);
3488                 }
3489                 error = sooptcopyin(sopt, optval, optsize, optsize);
3490                 if (error) {
3491                         SCTP_FREE(optval);
3492                         goto out;
3493                 }
3494         }
3495         p = (void *)sopt->sopt_td;
3496         if (sopt->sopt_dir == SOPT_SET) {
3497                 error = sctp_setopt(so, sopt->sopt_name, optval, optsize, p);
3498         } else if (sopt->sopt_dir == SOPT_GET) {
3499                 error = sctp_getopt(so, sopt->sopt_name, optval, &optsize, p);
3500         } else {
3501                 error = EINVAL;
3502         }
3503         if ((error == 0) && (optval != NULL)) {
3504                 error = sooptcopyout(sopt, optval, optsize);
3505                 SCTP_FREE(optval);
3506         } else if (optval != NULL) {
3507                 SCTP_FREE(optval);
3508         }
3509 out:
3510         return (error);
3511 }
3512
3513
3514 static int
3515 sctp_connect(struct socket *so, struct sockaddr *addr, struct thread *p)
3516 {
3517         int error = 0;
3518         int create_lock_on = 0;
3519         uint32_t vrf_id;
3520         struct sctp_inpcb *inp;
3521         struct sctp_tcb *stcb = NULL;
3522
3523         inp = (struct sctp_inpcb *)so->so_pcb;
3524         if (inp == 0) {
3525                 /* I made the same as TCP since we are not setup? */
3526                 return (ECONNRESET);
3527         }
3528         SCTP_ASOC_CREATE_LOCK(inp);
3529         create_lock_on = 1;
3530
3531         SCTP_INP_INCR_REF(inp);
3532         if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3533             (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
3534                 /* Should I really unlock ? */
3535                 error = EFAULT;
3536                 goto out_now;
3537         }
3538 #ifdef INET6
3539         if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) &&
3540             (addr->sa_family == AF_INET6)) {
3541                 error = EINVAL;
3542                 goto out_now;
3543         }
3544 #endif                          /* INET6 */
3545         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
3546             SCTP_PCB_FLAGS_UNBOUND) {
3547                 /* Bind a ephemeral port */
3548                 error = sctp_inpcb_bind(so, NULL, p);
3549                 if (error) {
3550                         goto out_now;
3551                 }
3552         }
3553         /* Now do we connect? */
3554         if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
3555                 error = EINVAL;
3556                 goto out_now;
3557         }
3558         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
3559             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
3560                 /* We are already connected AND the TCP model */
3561                 error = EADDRINUSE;
3562                 goto out_now;
3563         }
3564         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
3565                 SCTP_INP_RLOCK(inp);
3566                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
3567                 SCTP_INP_RUNLOCK(inp);
3568         } else {
3569                 /*
3570                  * We increment here since sctp_findassociation_ep_addr()
3571                  * wil do a decrement if it finds the stcb as long as the
3572                  * locked tcb (last argument) is NOT a TCB.. aka NULL.
3573                  */
3574                 SCTP_INP_INCR_REF(inp);
3575                 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL);
3576                 if (stcb == NULL) {
3577                         SCTP_INP_DECR_REF(inp);
3578                 } else {
3579                         SCTP_TCB_LOCK(stcb);
3580                 }
3581         }
3582         if (stcb != NULL) {
3583                 /* Already have or am bring up an association */
3584                 error = EALREADY;
3585                 goto out_now;
3586         }
3587         vrf_id = inp->def_vrf_id;
3588         /* We are GOOD to go */
3589         stcb = sctp_aloc_assoc(inp, addr, 1, &error, 0, vrf_id);
3590         if (stcb == NULL) {
3591                 /* Gak! no memory */
3592                 goto out_now;
3593         }
3594         if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
3595                 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
3596                 /* Set the connected flag so we can queue data */
3597                 soisconnecting(so);
3598         }
3599         stcb->asoc.state = SCTP_STATE_COOKIE_WAIT;
3600         (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
3601
3602         /* initialize authentication parameters for the assoc */
3603         sctp_initialize_auth_params(inp, stcb);
3604
3605         sctp_send_initiate(inp, stcb);
3606         SCTP_TCB_UNLOCK(stcb);
3607 out_now:
3608         if (create_lock_on) {
3609                 SCTP_ASOC_CREATE_UNLOCK(inp);
3610         }
3611         SCTP_INP_DECR_REF(inp);
3612         return error;
3613 }
3614
3615 int
3616 sctp_listen(struct socket *so, int backlog, struct thread *p)
3617 {
3618         /*
3619          * Note this module depends on the protocol processing being called
3620          * AFTER any socket level flags and backlog are applied to the
3621          * socket. The traditional way that the socket flags are applied is
3622          * AFTER protocol processing. We have made a change to the
3623          * sys/kern/uipc_socket.c module to reverse this but this MUST be in
3624          * place if the socket API for SCTP is to work properly.
3625          */
3626
3627         int error = 0;
3628         struct sctp_inpcb *inp;
3629
3630         inp = (struct sctp_inpcb *)so->so_pcb;
3631         if (inp == 0) {
3632                 /* I made the same as TCP since we are not setup? */
3633                 return (ECONNRESET);
3634         }
3635         SCTP_INP_RLOCK(inp);
3636 #ifdef SCTP_LOCK_LOGGING
3637         sctp_log_lock(inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_SOCK);
3638 #endif
3639         SOCK_LOCK(so);
3640         error = solisten_proto_check(so);
3641         if (error) {
3642                 SOCK_UNLOCK(so);
3643                 SCTP_INP_RUNLOCK(inp);
3644                 return (error);
3645         }
3646         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
3647             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
3648                 /* We are already connected AND the TCP model */
3649                 SCTP_INP_RUNLOCK(inp);
3650                 SOCK_UNLOCK(so);
3651                 return (EADDRINUSE);
3652         }
3653         if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
3654                 /* We must do a bind. */
3655                 SOCK_UNLOCK(so);
3656                 SCTP_INP_RUNLOCK(inp);
3657                 if ((error = sctp_inpcb_bind(so, NULL, p))) {
3658                         /* bind error, probably perm */
3659                         return (error);
3660                 }
3661                 SOCK_LOCK(so);
3662         } else {
3663                 SCTP_INP_RUNLOCK(inp);
3664         }
3665         /* It appears for 7.0 and on, we must always call this. */
3666         solisten_proto(so, backlog);
3667         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
3668                 /* remove the ACCEPTCONN flag for one-to-many sockets */
3669                 so->so_options &= ~SO_ACCEPTCONN;
3670         }
3671         if (backlog == 0) {
3672                 /* turning off listen */
3673                 so->so_options &= ~SO_ACCEPTCONN;
3674         }
3675         SOCK_UNLOCK(so);
3676         return (error);
3677 }
3678
3679 static int sctp_defered_wakeup_cnt = 0;
3680
3681 int
3682 sctp_accept(struct socket *so, struct sockaddr **addr)
3683 {
3684         struct sctp_tcb *stcb;
3685         struct sctp_inpcb *inp;
3686         union sctp_sockstore store;
3687
3688         int error;
3689
3690         inp = (struct sctp_inpcb *)so->so_pcb;
3691
3692         if (inp == 0) {
3693                 return (ECONNRESET);
3694         }
3695         SCTP_INP_RLOCK(inp);
3696         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
3697                 SCTP_INP_RUNLOCK(inp);
3698                 return (ENOTSUP);
3699         }
3700         if (so->so_state & SS_ISDISCONNECTED) {
3701                 SCTP_INP_RUNLOCK(inp);
3702                 return (ECONNABORTED);
3703         }
3704         stcb = LIST_FIRST(&inp->sctp_asoc_list);
3705         if (stcb == NULL) {
3706                 SCTP_INP_RUNLOCK(inp);
3707                 return (ECONNRESET);
3708         }
3709         SCTP_TCB_LOCK(stcb);
3710         SCTP_INP_RUNLOCK(inp);
3711         store = stcb->asoc.primary_destination->ro._l_addr;
3712         SCTP_TCB_UNLOCK(stcb);
3713         if (store.sa.sa_family == AF_INET) {
3714                 struct sockaddr_in *sin;
3715
3716                 SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
3717                 sin->sin_family = AF_INET;
3718                 sin->sin_len = sizeof(*sin);
3719                 sin->sin_port = ((struct sockaddr_in *)&store)->sin_port;
3720                 sin->sin_addr = ((struct sockaddr_in *)&store)->sin_addr;
3721                 *addr = (struct sockaddr *)sin;
3722         } else {
3723                 struct sockaddr_in6 *sin6;
3724
3725                 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
3726                 sin6->sin6_family = AF_INET6;
3727                 sin6->sin6_len = sizeof(*sin6);
3728                 sin6->sin6_port = ((struct sockaddr_in6 *)&store)->sin6_port;
3729
3730                 sin6->sin6_addr = ((struct sockaddr_in6 *)&store)->sin6_addr;
3731                 if ((error = sa6_recoverscope(sin6)) != 0) {
3732                         SCTP_FREE_SONAME(sin6);
3733                         return (error);
3734                 }
3735                 *addr = (struct sockaddr *)sin6;
3736         }
3737         /* Wake any delayed sleep action */
3738         if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) {
3739                 SCTP_INP_WLOCK(inp);
3740                 inp->sctp_flags &= ~SCTP_PCB_FLAGS_DONT_WAKE;
3741                 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT) {
3742                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
3743                         SCTP_INP_WUNLOCK(inp);
3744                         SOCKBUF_LOCK(&inp->sctp_socket->so_snd);
3745                         if (sowriteable(inp->sctp_socket)) {
3746                                 sowwakeup_locked(inp->sctp_socket);
3747                         } else {
3748                                 SOCKBUF_UNLOCK(&inp->sctp_socket->so_snd);
3749                         }
3750                         SCTP_INP_WLOCK(inp);
3751                 }
3752                 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT) {
3753                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
3754                         SCTP_INP_WUNLOCK(inp);
3755                         SOCKBUF_LOCK(&inp->sctp_socket->so_rcv);
3756                         if (soreadable(inp->sctp_socket)) {
3757                                 sctp_defered_wakeup_cnt++;
3758                                 sorwakeup_locked(inp->sctp_socket);
3759                         } else {
3760                                 SOCKBUF_UNLOCK(&inp->sctp_socket->so_rcv);
3761                         }
3762                         SCTP_INP_WLOCK(inp);
3763                 }
3764                 SCTP_INP_WUNLOCK(inp);
3765         }
3766         return (0);
3767 }
3768
3769 int
3770 sctp_ingetaddr(struct socket *so, struct sockaddr **addr)
3771 {
3772         struct sockaddr_in *sin;
3773         uint32_t vrf_id;
3774         struct sctp_inpcb *inp;
3775         struct sctp_ifa *sctp_ifa;
3776
3777         /*
3778          * Do the malloc first in case it blocks.
3779          */
3780         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
3781         sin->sin_family = AF_INET;
3782         sin->sin_len = sizeof(*sin);
3783         inp = (struct sctp_inpcb *)so->so_pcb;
3784         if (!inp) {
3785                 SCTP_FREE_SONAME(sin);
3786                 return ECONNRESET;
3787         }
3788         SCTP_INP_RLOCK(inp);
3789         sin->sin_port = inp->sctp_lport;
3790         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
3791                 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
3792                         struct sctp_tcb *stcb;
3793                         struct sockaddr_in *sin_a;
3794                         struct sctp_nets *net;
3795                         int fnd;
3796
3797                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
3798                         if (stcb == NULL) {
3799                                 goto notConn;
3800                         }
3801                         fnd = 0;
3802                         sin_a = NULL;
3803                         SCTP_TCB_LOCK(stcb);
3804                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3805                                 sin_a = (struct sockaddr_in *)&net->ro._l_addr;
3806                                 if (sin_a == NULL)
3807                                         /* this will make coverity happy */
3808                                         continue;
3809
3810                                 if (sin_a->sin_family == AF_INET) {
3811                                         fnd = 1;
3812                                         break;
3813                                 }
3814                         }
3815                         if ((!fnd) || (sin_a == NULL)) {
3816                                 /* punt */
3817                                 SCTP_TCB_UNLOCK(stcb);
3818                                 goto notConn;
3819                         }
3820                         vrf_id = inp->def_vrf_id;
3821                         sctp_ifa = sctp_source_address_selection(inp,
3822                             stcb,
3823                             (sctp_route_t *) & net->ro,
3824                             net, 0, vrf_id);
3825                         if (sctp_ifa) {
3826                                 sin->sin_addr = sctp_ifa->address.sin.sin_addr;
3827                                 sctp_free_ifa(sctp_ifa);
3828                         }
3829                         SCTP_TCB_UNLOCK(stcb);
3830                 } else {
3831                         /* For the bound all case you get back 0 */
3832         notConn:
3833                         sin->sin_addr.s_addr = 0;
3834                 }
3835
3836         } else {
3837                 /* Take the first IPv4 address in the list */
3838                 struct sctp_laddr *laddr;
3839                 int fnd = 0;
3840
3841                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
3842                         if (laddr->ifa->address.sa.sa_family == AF_INET) {
3843                                 struct sockaddr_in *sin_a;
3844
3845                                 sin_a = (struct sockaddr_in *)&laddr->ifa->address.sa;
3846                                 sin->sin_addr = sin_a->sin_addr;
3847                                 fnd = 1;
3848                                 break;
3849                         }
3850                 }
3851                 if (!fnd) {
3852                         SCTP_FREE_SONAME(sin);
3853                         SCTP_INP_RUNLOCK(inp);
3854                         return ENOENT;
3855                 }
3856         }
3857         SCTP_INP_RUNLOCK(inp);
3858         (*addr) = (struct sockaddr *)sin;
3859         return (0);
3860 }
3861
3862 int
3863 sctp_peeraddr(struct socket *so, struct sockaddr **addr)
3864 {
3865         struct sockaddr_in *sin = (struct sockaddr_in *)*addr;
3866         int fnd;
3867         struct sockaddr_in *sin_a;
3868         struct sctp_inpcb *inp;
3869         struct sctp_tcb *stcb;
3870         struct sctp_nets *net;
3871
3872         /* Do the malloc first in case it blocks. */
3873         inp = (struct sctp_inpcb *)so->so_pcb;
3874         if ((inp == NULL) ||
3875             ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) {
3876                 /* UDP type and listeners will drop out here */
3877                 return (ENOTCONN);
3878         }
3879         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
3880         sin->sin_family = AF_INET;
3881         sin->sin_len = sizeof(*sin);
3882
3883         /* We must recapture incase we blocked */
3884         inp = (struct sctp_inpcb *)so->so_pcb;
3885         if (!inp) {
3886                 SCTP_FREE_SONAME(sin);
3887                 return ECONNRESET;
3888         }
3889         SCTP_INP_RLOCK(inp);
3890         stcb = LIST_FIRST(&inp->sctp_asoc_list);
3891         if (stcb) {
3892                 SCTP_TCB_LOCK(stcb);
3893         }
3894         SCTP_INP_RUNLOCK(inp);
3895         if (stcb == NULL) {
3896                 SCTP_FREE_SONAME(sin);
3897                 return ECONNRESET;
3898         }
3899         fnd = 0;
3900         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3901                 sin_a = (struct sockaddr_in *)&net->ro._l_addr;
3902                 if (sin_a->sin_family == AF_INET) {
3903                         fnd = 1;
3904                         sin->sin_port = stcb->rport;
3905                         sin->sin_addr = sin_a->sin_addr;
3906                         break;
3907                 }
3908         }
3909         SCTP_TCB_UNLOCK(stcb);
3910         if (!fnd) {
3911                 /* No IPv4 address */
3912                 SCTP_FREE_SONAME(sin);
3913                 return ENOENT;
3914         }
3915         (*addr) = (struct sockaddr *)sin;
3916         return (0);
3917 }
3918
3919 struct pr_usrreqs sctp_usrreqs = {
3920         .pru_abort = sctp_abort,
3921         .pru_accept = sctp_accept,
3922         .pru_attach = sctp_attach,
3923         .pru_bind = sctp_bind,
3924         .pru_connect = sctp_connect,
3925         .pru_control = in_control,
3926         .pru_close = sctp_close,
3927         .pru_detach = sctp_close,
3928         .pru_sopoll = sopoll_generic,
3929         .pru_disconnect = sctp_disconnect,
3930         .pru_listen = sctp_listen,
3931         .pru_peeraddr = sctp_peeraddr,
3932         .pru_send = sctp_sendm,
3933         .pru_shutdown = sctp_shutdown,
3934         .pru_sockaddr = sctp_ingetaddr,
3935         .pru_sosend = sctp_sosend,
3936         .pru_soreceive = sctp_soreceive
3937 };