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 #include <netinet/sctp_bsd_addr.h>
  52 #include <netinet/sctp_cc_functions.h>
  53
  54
  55
  56
  57 void
  58 sctp_init(void)
  59 {
  60         /* Init the SCTP pcb in sctp_pcb.c */
  61         u_long sb_max_adj;
  62
  63         sctp_pcb_init();
  64
  65
  66         if ((nmbclusters / 8) > SCTP_ASOC_MAX_CHUNKS_ON_QUEUE)
  67                 sctp_max_chunks_on_queue = (nmbclusters / 8);
  68         /*
  69          * Allow a user to take no more than 1/2 the number of clusters or
  70          * the SB_MAX whichever is smaller for the send window.
  71          */
  72         sb_max_adj = (u_long)((u_quad_t) (SB_MAX) * MCLBYTES / (MSIZE + MCLBYTES));
  73         sctp_sendspace = min((min(SB_MAX, sb_max_adj)),
  74             (((uint32_t) nmbclusters / 2) * SCTP_DEFAULT_MAXSEGMENT));
  75         /*
  76          * Now for the recv window, should we take the same amount? or
  77          * should I do 1/2 the SB_MAX instead in the SB_MAX min above. For
  78          * now I will just copy.
  79          */
  80         sctp_recvspace = sctp_sendspace;
  81
  82 }
  83
  84
  85
  86 /*
  87  * cleanup of the sctppcbinfo structure.
  88  * Assumes that the sctppcbinfo lock is held.
  89  */
  90 void
  91 sctp_pcbinfo_cleanup(void)
  92 {
  93         /* free the hash tables */
  94         if (sctppcbinfo.sctp_asochash != NULL)
  95                 SCTP_HASH_FREE(sctppcbinfo.sctp_asochash, sctppcbinfo.hashasocmark);
  96         if (sctppcbinfo.sctp_ephash != NULL)
  97                 SCTP_HASH_FREE(sctppcbinfo.sctp_ephash, sctppcbinfo.hashmark);
  98         if (sctppcbinfo.sctp_tcpephash != NULL)
  99                 SCTP_HASH_FREE(sctppcbinfo.sctp_tcpephash, sctppcbinfo.hashtcpmark);
 100         if (sctppcbinfo.sctp_restarthash != NULL)
 101                 SCTP_HASH_FREE(sctppcbinfo.sctp_restarthash, sctppcbinfo.hashrestartmark);
 102 }
 103
 104
 105 static void
 106 sctp_pathmtu_adjustment(struct sctp_inpcb *inp,
 107     struct sctp_tcb *stcb,
 108     struct sctp_nets *net,
 109     uint16_t nxtsz)
 110 {
 111         struct sctp_tmit_chunk *chk;
 112
 113         /* Adjust that too */
 114         stcb->asoc.smallest_mtu = nxtsz;
 115         /* now off to subtract IP_DF flag if needed */
 116 #ifdef SCTP_PRINT_FOR_B_AND_M
 117         SCTP_PRINTF("sctp_pathmtu_adjust called inp:%p stcb:%p net:%p nxtsz:%d\n",
 118             inp, stcb, net, nxtsz);
 119 #endif
 120         TAILQ_FOREACH(chk, &stcb->asoc.send_queue, sctp_next) {
 121                 if ((chk->send_size + IP_HDR_SIZE) > nxtsz) {
 122                         chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
 123                 }
 124         }
 125         TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
 126                 if ((chk->send_size + IP_HDR_SIZE) > nxtsz) {
 127                         /*
 128                          * For this guy we also mark for immediate resend
 129                          * since we sent to big of chunk
 130                          */
 131                         chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
 132                         if (chk->sent != SCTP_DATAGRAM_RESEND) {
 133                                 sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt);
 134                         }
 135                         chk->sent = SCTP_DATAGRAM_RESEND;
 136                         chk->rec.data.doing_fast_retransmit = 0;
 137                         if (sctp_logging_level & SCTP_FLIGHT_LOGGING_ENABLE) {
 138                                 sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_PMTU,
 139                                     chk->whoTo->flight_size,
 140                                     chk->book_size,
 141                                     (uintptr_t) chk->whoTo,
 142                                     chk->rec.data.TSN_seq);
 143                         }
 144                         /* Clear any time so NO RTT is being done */
 145                         chk->do_rtt = 0;
 146                         sctp_flight_size_decrease(chk);
 147                         sctp_total_flight_decrease(stcb, chk);
 148                 }
 149         }
 150 }
 151
 152 static void
 153 sctp_notify_mbuf(struct sctp_inpcb *inp,
 154     struct sctp_tcb *stcb,
 155     struct sctp_nets *net,
 156     struct ip *ip,
 157     struct sctphdr *sh)
 158 {
 159         struct icmp *icmph;
 160         int totsz, tmr_stopped = 0;
 161         uint16_t nxtsz;
 162
 163         /* protection */
 164         if ((inp == NULL) || (stcb == NULL) || (net == NULL) ||
 165             (ip == NULL) || (sh == NULL)) {
 166                 if (stcb != NULL) {
 167                         SCTP_TCB_UNLOCK(stcb);
 168                 }
 169                 return;
 170         }
 171         /* First job is to verify the vtag matches what I would send */
 172         if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) {
 173                 SCTP_TCB_UNLOCK(stcb);
 174                 return;
 175         }
 176         icmph = (struct icmp *)((caddr_t)ip - (sizeof(struct icmp) -
 177             sizeof(struct ip)));
 178         if (icmph->icmp_type != ICMP_UNREACH) {
 179                 /* We only care about unreachable */
 180                 SCTP_TCB_UNLOCK(stcb);
 181                 return;
 182         }
 183         if (icmph->icmp_code != ICMP_UNREACH_NEEDFRAG) {
 184                 /* not a unreachable message due to frag. */
 185                 SCTP_TCB_UNLOCK(stcb);
 186                 return;
 187         }
 188         totsz = ip->ip_len;
 189
 190         nxtsz = ntohs(icmph->icmp_nextmtu);
 191         if (nxtsz == 0) {
 192                 /*
 193                  * old type router that does not tell us what the next size
 194                  * mtu is. Rats we will have to guess (in a educated fashion
 195                  * of course)
 196                  */
 197                 nxtsz = find_next_best_mtu(totsz);
 198         }
 199         /* Stop any PMTU timer */
 200         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
 201                 tmr_stopped = 1;
 202                 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
 203                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_1);
 204         }
 205         /* Adjust destination size limit */
 206         if (net->mtu > nxtsz) {
 207                 net->mtu = nxtsz;
 208         }
 209         /* now what about the ep? */
 210         if (stcb->asoc.smallest_mtu > nxtsz) {
 211 #ifdef SCTP_PRINT_FOR_B_AND_M
 212                 SCTP_PRINTF("notify_mbuf (ICMP) calls sctp_pathmtu_adjust mtu:%d\n",
 213                     nxtsz);
 214 #endif
 215                 sctp_pathmtu_adjustment(inp, stcb, net, nxtsz);
 216         }
 217         if (tmr_stopped)
 218                 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
 219
 220         SCTP_TCB_UNLOCK(stcb);
 221 }
 222
 223
 224 void
 225 sctp_notify(struct sctp_inpcb *inp,
 226     struct ip *ip,
 227     struct sctphdr *sh,
 228     struct sockaddr *to,
 229     struct sctp_tcb *stcb,
 230     struct sctp_nets *net)
 231 {
 232 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
 233         struct socket *so;
 234
 235 #endif
 236         /* protection */
 237         int reason;
 238         struct icmp *icmph;
 239
 240
 241         if ((inp == NULL) || (stcb == NULL) || (net == NULL) ||
 242             (sh == NULL) || (to == NULL)) {
 243                 if (stcb)
 244                         SCTP_TCB_UNLOCK(stcb);
 245                 return;
 246         }
 247         /* First job is to verify the vtag matches what I would send */
 248         if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) {
 249                 SCTP_TCB_UNLOCK(stcb);
 250                 return;
 251         }
 252         icmph = (struct icmp *)((caddr_t)ip - (sizeof(struct icmp) -
 253             sizeof(struct ip)));
 254         if (icmph->icmp_type != ICMP_UNREACH) {
 255                 /* We only care about unreachable */
 256                 SCTP_TCB_UNLOCK(stcb);
 257                 return;
 258         }
 259         if ((icmph->icmp_code == ICMP_UNREACH_NET) ||
 260             (icmph->icmp_code == ICMP_UNREACH_HOST) ||
 261             (icmph->icmp_code == ICMP_UNREACH_NET_UNKNOWN) ||
 262             (icmph->icmp_code == ICMP_UNREACH_HOST_UNKNOWN) ||
 263             (icmph->icmp_code == ICMP_UNREACH_ISOLATED) ||
 264             (icmph->icmp_code == ICMP_UNREACH_NET_PROHIB) ||
 265             (icmph->icmp_code == ICMP_UNREACH_HOST_PROHIB) ||
 266             (icmph->icmp_code == ICMP_UNREACH_FILTER_PROHIB)) {
 267
 268                 /*
 269                  * Hmm reachablity problems we must examine closely. If its
 270                  * not reachable, we may have lost a network. Or if there is
 271                  * NO protocol at the other end named SCTP. well we consider
 272                  * it a OOTB abort.
 273                  */
 274                 if (net->dest_state & SCTP_ADDR_REACHABLE) {
 275                         /* Ok that destination is NOT reachable */
 276                         SCTP_PRINTF("ICMP (thresh %d/%d) takes interface %p down\n",
 277                             net->error_count,
 278                             net->failure_threshold,
 279                             net);
 280
 281                         net->dest_state &= ~SCTP_ADDR_REACHABLE;
 282                         net->dest_state |= SCTP_ADDR_NOT_REACHABLE;
 283                         /*
 284                          * JRS 5/14/07 - If a destination is unreachable,
 285                          * the PF bit is turned off.  This allows an
 286                          * unambiguous use of the PF bit for destinations
 287                          * that are reachable but potentially failed. If the
 288                          * destination is set to the unreachable state, also
 289                          * set the destination to the PF state.
 290                          */
 291                         /*
 292                          * Add debug message here if destination is not in
 293                          * PF state.
 294                          */
 295                         /* Stop any running T3 timers here? */
 296                         if (sctp_cmt_on_off && sctp_cmt_pf) {
 297                                 net->dest_state &= ~SCTP_ADDR_PF;
 298                                 SCTPDBG(SCTP_DEBUG_TIMER4, "Destination %p moved from PF to unreachable.\n",
 299                                     net);
 300                         }
 301                         net->error_count = net->failure_threshold + 1;
 302                         sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN,
 303                             stcb, SCTP_FAILED_THRESHOLD,
 304                             (void *)net, SCTP_SO_NOT_LOCKED);
 305                 }
 306                 SCTP_TCB_UNLOCK(stcb);
 307         } else if ((icmph->icmp_code == ICMP_UNREACH_PROTOCOL) ||
 308             (icmph->icmp_code == ICMP_UNREACH_PORT)) {
 309                 /*
 310                  * Here the peer is either playing tricks on us, including
 311                  * an address that belongs to someone who does not support
 312                  * SCTP OR was a userland implementation that shutdown and
 313                  * now is dead. In either case treat it like a OOTB abort
 314                  * with no TCB
 315                  */
 316                 reason = SCTP_PEER_FAULTY;
 317                 sctp_abort_notification(stcb, reason, SCTP_SO_NOT_LOCKED);
 318 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
 319                 so = SCTP_INP_SO(inp);
 320                 atomic_add_int(&stcb->asoc.refcnt, 1);
 321                 SCTP_TCB_UNLOCK(stcb);
 322                 SCTP_SOCKET_LOCK(so, 1);
 323                 SCTP_TCB_LOCK(stcb);
 324                 atomic_subtract_int(&stcb->asoc.refcnt, 1);
 325 #endif
 326                 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_2);
 327 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
 328                 SCTP_SOCKET_UNLOCK(so, 1);
 329                 /* SCTP_TCB_UNLOCK(stcb); MT: I think this is not needed. */
 330 #endif
 331                 /* no need to unlock here, since the TCB is gone */
 332         } else {
 333                 SCTP_TCB_UNLOCK(stcb);
 334         }
 335 }
 336
 337 void
 338 sctp_ctlinput(cmd, sa, vip)
 339         int cmd;
 340         struct sockaddr *sa;
 341         void *vip;
 342 {
 343         struct ip *ip = vip;
 344         struct sctphdr *sh;
 345         uint32_t vrf_id;
 346
 347         /* FIX, for non-bsd is this right? */
 348         vrf_id = SCTP_DEFAULT_VRFID;
 349         if (sa->sa_family != AF_INET ||
 350             ((struct sockaddr_in *)sa)->sin_addr.s_addr == INADDR_ANY) {
 351                 return;
 352         }
 353         if (PRC_IS_REDIRECT(cmd)) {
 354                 ip = 0;
 355         } else if ((unsigned)cmd >= PRC_NCMDS || inetctlerrmap[cmd] == 0) {
 356                 return;
 357         }
 358         if (ip) {
 359                 struct sctp_inpcb *inp = NULL;
 360                 struct sctp_tcb *stcb = NULL;
 361                 struct sctp_nets *net = NULL;
 362                 struct sockaddr_in to, from;
 363
 364                 sh = (struct sctphdr *)((caddr_t)ip + (ip->ip_hl << 2));
 365                 bzero(&to, sizeof(to));
 366                 bzero(&from, sizeof(from));
 367                 from.sin_family = to.sin_family = AF_INET;
 368                 from.sin_len = to.sin_len = sizeof(to);
 369                 from.sin_port = sh->src_port;
 370                 from.sin_addr = ip->ip_src;
 371                 to.sin_port = sh->dest_port;
 372                 to.sin_addr = ip->ip_dst;
 373
 374                 /*
 375                  * 'to' holds the dest of the packet that failed to be sent.
 376                  * 'from' holds our local endpoint address. Thus we reverse
 377                  * the to and the from in the lookup.
 378                  */
 379                 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&from,
 380                     (struct sockaddr *)&to,
 381                     &inp, &net, 1, vrf_id);
 382                 if (stcb != NULL && inp && (inp->sctp_socket != NULL)) {
 383                         if (cmd != PRC_MSGSIZE) {
 384                                 sctp_notify(inp, ip, sh,
 385                                     (struct sockaddr *)&to, stcb,
 386                                     net);
 387                         } else {
 388                                 /* handle possible ICMP size messages */
 389                                 sctp_notify_mbuf(inp, stcb, net, ip, sh);
 390                         }
 391                 } else {
 392                         if ((stcb == NULL) && (inp != NULL)) {
 393                                 /* reduce ref-count */
 394                                 SCTP_INP_WLOCK(inp);
 395                                 SCTP_INP_DECR_REF(inp);
 396                                 SCTP_INP_WUNLOCK(inp);
 397                         }
 398                 }
 399         }
 400         return;
 401 }
 402
 403 static int
 404 sctp_getcred(SYSCTL_HANDLER_ARGS)
 405 {
 406         struct xucred xuc;
 407         struct sockaddr_in addrs[2];
 408         struct sctp_inpcb *inp;
 409         struct sctp_nets *net;
 410         struct sctp_tcb *stcb;
 411         int error;
 412         uint32_t vrf_id;
 413
 414         /* FIX, for non-bsd is this right? */
 415         vrf_id = SCTP_DEFAULT_VRFID;
 416
 417         error = priv_check(req->td, PRIV_NETINET_GETCRED);
 418
 419         if (error)
 420                 return (error);
 421
 422         error = SYSCTL_IN(req, addrs, sizeof(addrs));
 423         if (error)
 424                 return (error);
 425
 426         stcb = sctp_findassociation_addr_sa(sintosa(&addrs[0]),
 427             sintosa(&addrs[1]),
 428             &inp, &net, 1, vrf_id);
 429         if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) {
 430                 if ((inp != NULL) && (stcb == NULL)) {
 431                         /* reduce ref-count */
 432                         SCTP_INP_WLOCK(inp);
 433                         SCTP_INP_DECR_REF(inp);
 434                         goto cred_can_cont;
 435                 }
 436                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
 437                 error = ENOENT;
 438                 goto out;
 439         }
 440         SCTP_TCB_UNLOCK(stcb);
 441         /*
 442          * We use the write lock here, only since in the error leg we need
 443          * it. If we used RLOCK, then we would have to
 444          * wlock/decr/unlock/rlock. Which in theory could create a hole.
 445          * Better to use higher wlock.
 446          */
 447         SCTP_INP_WLOCK(inp);
 448 cred_can_cont:
 449         error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket);
 450         if (error) {
 451                 SCTP_INP_WUNLOCK(inp);
 452                 goto out;
 453         }
 454         cru2x(inp->sctp_socket->so_cred, &xuc);
 455         SCTP_INP_WUNLOCK(inp);
 456         error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred));
 457 out:
 458         return (error);
 459 }
 460
 461 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW,
 462     0, 0, sctp_getcred, "S,ucred", "Get the ucred of a SCTP connection");
 463
 464
 465 static void
 466 sctp_abort(struct socket *so)
 467 {
 468         struct sctp_inpcb *inp;
 469         uint32_t flags;
 470
 471         inp = (struct sctp_inpcb *)so->so_pcb;
 472         if (inp == 0) {
 473                 return;
 474         }
 475 sctp_must_try_again:
 476         flags = inp->sctp_flags;
 477 #ifdef SCTP_LOG_CLOSING
 478         sctp_log_closing(inp, NULL, 17);
 479 #endif
 480         if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
 481             (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
 482 #ifdef SCTP_LOG_CLOSING
 483                 sctp_log_closing(inp, NULL, 16);
 484 #endif
 485                 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
 486                     SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
 487                 SOCK_LOCK(so);
 488                 SCTP_SB_CLEAR(so->so_snd);
 489                 /*
 490                  * same for the rcv ones, they are only here for the
 491                  * accounting/select.
 492                  */
 493                 SCTP_SB_CLEAR(so->so_rcv);
 494
 495                 /* Now null out the reference, we are completely detached. */
 496                 so->so_pcb = NULL;
 497                 SOCK_UNLOCK(so);
 498         } else {
 499                 flags = inp->sctp_flags;
 500                 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
 501                         goto sctp_must_try_again;
 502                 }
 503         }
 504         return;
 505 }
 506
 507 static int
 508 sctp_attach(struct socket *so, int proto, struct thread *p)
 509 {
 510         struct sctp_inpcb *inp;
 511         struct inpcb *ip_inp;
 512         int error;
 513         uint32_t vrf_id = SCTP_DEFAULT_VRFID;
 514
 515 #ifdef IPSEC
 516         uint32_t flags;
 517
 518 #endif
 519         inp = (struct sctp_inpcb *)so->so_pcb;
 520         if (inp != 0) {
 521                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 522                 return EINVAL;
 523         }
 524         error = SCTP_SORESERVE(so, sctp_sendspace, sctp_recvspace);
 525         if (error) {
 526                 return error;
 527         }
 528         error = sctp_inpcb_alloc(so, vrf_id);
 529         if (error) {
 530                 return error;
 531         }
 532         inp = (struct sctp_inpcb *)so->so_pcb;
 533         SCTP_INP_WLOCK(inp);
 534         inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUND_V6;    /* I'm not v6! */
 535         ip_inp = &inp->ip_inp.inp;
 536         ip_inp->inp_vflag |= INP_IPV4;
 537         ip_inp->inp_ip_ttl = ip_defttl;
 538 #ifdef IPSEC
 539         error = ipsec_init_policy(so, &ip_inp->inp_sp);
 540 #ifdef SCTP_LOG_CLOSING
 541         sctp_log_closing(inp, NULL, 17);
 542 #endif
 543         if (error != 0) {
 544                 flags = inp->sctp_flags;
 545                 if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
 546                     (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
 547 #ifdef SCTP_LOG_CLOSING
 548                         sctp_log_closing(inp, NULL, 15);
 549 #endif
 550                         SCTP_INP_WUNLOCK(inp);
 551                         sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
 552                             SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
 553                 } else {
 554                         SCTP_INP_WUNLOCK(inp);
 555                 }
 556                 return error;
 557         }
 558 #endif                          /* IPSEC */
 559         SCTP_INP_WUNLOCK(inp);
 560         return 0;
 561 }
 562
 563 static int
 564 sctp_bind(struct socket *so, struct sockaddr *addr, struct thread *p)
 565 {
 566         struct sctp_inpcb *inp = NULL;
 567         int error;
 568
 569 #ifdef INET6
 570         if (addr && addr->sa_family != AF_INET) {
 571                 /* must be a v4 address! */
 572                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 573                 return EINVAL;
 574         }
 575 #endif                          /* INET6 */
 576         if (addr && (addr->sa_len != sizeof(struct sockaddr_in))) {
 577                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 578                 return EINVAL;
 579         }
 580         inp = (struct sctp_inpcb *)so->so_pcb;
 581         if (inp == 0) {
 582                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 583                 return EINVAL;
 584         }
 585         error = sctp_inpcb_bind(so, addr, NULL, p);
 586         return error;
 587 }
 588
 589 void
 590 sctp_close(struct socket *so)
 591 {
 592         struct sctp_inpcb *inp;
 593         uint32_t flags;
 594
 595         inp = (struct sctp_inpcb *)so->so_pcb;
 596         if (inp == 0)
 597                 return;
 598
 599         /*
 600          * Inform all the lower layer assoc that we are done.
 601          */
 602 sctp_must_try_again:
 603         flags = inp->sctp_flags;
 604 #ifdef SCTP_LOG_CLOSING
 605         sctp_log_closing(inp, NULL, 17);
 606 #endif
 607         if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
 608             (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
 609                 if (((so->so_options & SO_LINGER) && (so->so_linger == 0)) ||
 610                     (so->so_rcv.sb_cc > 0)) {
 611 #ifdef SCTP_LOG_CLOSING
 612                         sctp_log_closing(inp, NULL, 13);
 613 #endif
 614                         sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
 615                             SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
 616                 } else {
 617 #ifdef SCTP_LOG_CLOSING
 618                         sctp_log_closing(inp, NULL, 14);
 619 #endif
 620                         sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
 621                             SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
 622                 }
 623                 /*
 624                  * The socket is now detached, no matter what the state of
 625                  * the SCTP association.
 626                  */
 627                 SOCK_LOCK(so);
 628                 SCTP_SB_CLEAR(so->so_snd);
 629                 /*
 630                  * same for the rcv ones, they are only here for the
 631                  * accounting/select.
 632                  */
 633                 SCTP_SB_CLEAR(so->so_rcv);
 634
 635                 /* Now null out the reference, we are completely detached. */
 636                 so->so_pcb = NULL;
 637                 SOCK_UNLOCK(so);
 638         } else {
 639                 flags = inp->sctp_flags;
 640                 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
 641                         goto sctp_must_try_again;
 642                 }
 643         }
 644         return;
 645 }
 646
 647
 648 int
 649 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
 650     struct mbuf *control, struct thread *p);
 651
 652
 653 int
 654 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
 655     struct mbuf *control, struct thread *p)
 656 {
 657         struct sctp_inpcb *inp;
 658         int error;
 659
 660         inp = (struct sctp_inpcb *)so->so_pcb;
 661         if (inp == 0) {
 662                 if (control) {
 663                         sctp_m_freem(control);
 664                         control = NULL;
 665                 }
 666                 SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 667                 sctp_m_freem(m);
 668                 return EINVAL;
 669         }
 670         /* Got to have an to address if we are NOT a connected socket */
 671         if ((addr == NULL) &&
 672             ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) ||
 673             (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE))
 674             ) {
 675                 goto connected_type;
 676         } else if (addr == NULL) {
 677                 SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EDESTADDRREQ);
 678                 error = EDESTADDRREQ;
 679                 sctp_m_freem(m);
 680                 if (control) {
 681                         sctp_m_freem(control);
 682                         control = NULL;
 683                 }
 684                 return (error);
 685         }
 686 #ifdef INET6
 687         if (addr->sa_family != AF_INET) {
 688                 /* must be a v4 address! */
 689                 SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EDESTADDRREQ);
 690                 sctp_m_freem(m);
 691                 if (control) {
 692                         sctp_m_freem(control);
 693                         control = NULL;
 694                 }
 695                 error = EDESTADDRREQ;
 696                 return EDESTADDRREQ;
 697         }
 698 #endif                          /* INET6 */
 699 connected_type:
 700         /* now what about control */
 701         if (control) {
 702                 if (inp->control) {
 703                         SCTP_PRINTF("huh? control set?\n");
 704                         sctp_m_freem(inp->control);
 705                         inp->control = NULL;
 706                 }
 707                 inp->control = control;
 708         }
 709         /* Place the data */
 710         if (inp->pkt) {
 711                 SCTP_BUF_NEXT(inp->pkt_last) = m;
 712                 inp->pkt_last = m;
 713         } else {
 714                 inp->pkt_last = inp->pkt = m;
 715         }
 716         if (
 717         /* FreeBSD uses a flag passed */
 718             ((flags & PRUS_MORETOCOME) == 0)
 719             ) {
 720                 /*
 721                  * note with the current version this code will only be used
 722                  * by OpenBSD-- NetBSD, FreeBSD, and MacOS have methods for
 723                  * re-defining sosend to use the sctp_sosend. One can
 724                  * optionally switch back to this code (by changing back the
 725                  * definitions) but this is not advisable. This code is used
 726                  * by FreeBSD when sending a file with sendfile() though.
 727                  */
 728                 int ret;
 729
 730                 ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags);
 731                 inp->pkt = NULL;
 732                 inp->control = NULL;
 733                 return (ret);
 734         } else {
 735                 return (0);
 736         }
 737 }
 738
 739 int
 740 sctp_disconnect(struct socket *so)
 741 {
 742         struct sctp_inpcb *inp;
 743
 744         inp = (struct sctp_inpcb *)so->so_pcb;
 745         if (inp == NULL) {
 746                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
 747                 return (ENOTCONN);
 748         }
 749         SCTP_INP_RLOCK(inp);
 750         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
 751             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
 752                 if (SCTP_LIST_EMPTY(&inp->sctp_asoc_list)) {
 753                         /* No connection */
 754                         SCTP_INP_RUNLOCK(inp);
 755                         return (0);
 756                 } else {
 757                         struct sctp_association *asoc;
 758                         struct sctp_tcb *stcb;
 759
 760                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
 761                         if (stcb == NULL) {
 762                                 SCTP_INP_RUNLOCK(inp);
 763                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 764                                 return (EINVAL);
 765                         }
 766                         SCTP_TCB_LOCK(stcb);
 767                         asoc = &stcb->asoc;
 768                         if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
 769                                 /* We are about to be freed, out of here */
 770                                 SCTP_TCB_UNLOCK(stcb);
 771                                 SCTP_INP_RUNLOCK(inp);
 772                                 return (0);
 773                         }
 774                         if (((so->so_options & SO_LINGER) &&
 775                             (so->so_linger == 0)) ||
 776                             (so->so_rcv.sb_cc > 0)) {
 777                                 if (SCTP_GET_STATE(asoc) !=
 778                                     SCTP_STATE_COOKIE_WAIT) {
 779                                         /* Left with Data unread */
 780                                         struct mbuf *err;
 781
 782                                         err = sctp_get_mbuf_for_msg(sizeof(struct sctp_paramhdr), 0, M_DONTWAIT, 1, MT_DATA);
 783                                         if (err) {
 784                                                 /*
 785                                                  * Fill in the user
 786                                                  * initiated abort
 787                                                  */
 788                                                 struct sctp_paramhdr *ph;
 789
 790                                                 ph = mtod(err, struct sctp_paramhdr *);
 791                                                 SCTP_BUF_LEN(err) = sizeof(struct sctp_paramhdr);
 792                                                 ph->param_type = htons(SCTP_CAUSE_USER_INITIATED_ABT);
 793                                                 ph->param_length = htons(SCTP_BUF_LEN(err));
 794                                         }
 795 #if defined(SCTP_PANIC_ON_ABORT)
 796                                         panic("disconnect does an abort");
 797 #endif
 798                                         sctp_send_abort_tcb(stcb, err, SCTP_SO_LOCKED);
 799                                         SCTP_STAT_INCR_COUNTER32(sctps_aborted);
 800                                 }
 801                                 SCTP_INP_RUNLOCK(inp);
 802                                 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
 803                                     (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 804                                         SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 805                                 }
 806                                 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_3);
 807                                 /* No unlock tcb assoc is gone */
 808                                 return (0);
 809                         }
 810                         if (TAILQ_EMPTY(&asoc->send_queue) &&
 811                             TAILQ_EMPTY(&asoc->sent_queue) &&
 812                             (asoc->stream_queue_cnt == 0)) {
 813                                 /* there is nothing queued to send, so done */
 814                                 if (asoc->locked_on_sending) {
 815                                         goto abort_anyway;
 816                                 }
 817                                 if ((SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
 818                                     (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
 819                                         /* only send SHUTDOWN 1st time thru */
 820                                         sctp_stop_timers_for_shutdown(stcb);
 821                                         sctp_send_shutdown(stcb,
 822                                             stcb->asoc.primary_destination);
 823                                         sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_LOCKED);
 824                                         if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
 825                                             (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 826                                                 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 827                                         }
 828                                         SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT);
 829                                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN,
 830                                             stcb->sctp_ep, stcb,
 831                                             asoc->primary_destination);
 832                                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD,
 833                                             stcb->sctp_ep, stcb,
 834                                             asoc->primary_destination);
 835                                 }
 836                         } else {
 837                                 /*
 838                                  * we still got (or just got) data to send,
 839                                  * so set SHUTDOWN_PENDING
 840                                  */
 841                                 /*
 842                                  * XXX sockets draft says that SCTP_EOF
 843                                  * should be sent with no data. currently,
 844                                  * we will allow user data to be sent first
 845                                  * and move to SHUTDOWN-PENDING
 846                                  */
 847                                 asoc->state |= SCTP_STATE_SHUTDOWN_PENDING;
 848                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb,
 849                                     asoc->primary_destination);
 850                                 if (asoc->locked_on_sending) {
 851                                         /* Locked to send out the data */
 852                                         struct sctp_stream_queue_pending *sp;
 853
 854                                         sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead);
 855                                         if (sp == NULL) {
 856                                                 SCTP_PRINTF("Error, sp is NULL, locked on sending is non-null strm:%d\n",
 857                                                     asoc->locked_on_sending->stream_no);
 858                                         } else {
 859                                                 if ((sp->length == 0) && (sp->msg_is_complete == 0))
 860                                                         asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT;
 861                                         }
 862                                 }
 863                                 if (TAILQ_EMPTY(&asoc->send_queue) &&
 864                                     TAILQ_EMPTY(&asoc->sent_queue) &&
 865                                     (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
 866                                         struct mbuf *op_err;
 867
 868                         abort_anyway:
 869                                         op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
 870                                             0, M_DONTWAIT, 1, MT_DATA);
 871                                         if (op_err) {
 872                                                 /*
 873                                                  * Fill in the user
 874                                                  * initiated abort
 875                                                  */
 876                                                 struct sctp_paramhdr *ph;
 877                                                 uint32_t *ippp;
 878
 879                                                 SCTP_BUF_LEN(op_err) =
 880                                                     (sizeof(struct sctp_paramhdr) + sizeof(uint32_t));
 881                                                 ph = mtod(op_err,
 882                                                     struct sctp_paramhdr *);
 883                                                 ph->param_type = htons(
 884                                                     SCTP_CAUSE_USER_INITIATED_ABT);
 885                                                 ph->param_length = htons(SCTP_BUF_LEN(op_err));
 886                                                 ippp = (uint32_t *) (ph + 1);
 887                                                 *ippp = htonl(SCTP_FROM_SCTP_USRREQ + SCTP_LOC_4);
 888                                         }
 889 #if defined(SCTP_PANIC_ON_ABORT)
 890                                         panic("disconnect does an abort");
 891 #endif
 892
 893                                         stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_USRREQ + SCTP_LOC_4;
 894                                         sctp_send_abort_tcb(stcb, op_err, SCTP_SO_LOCKED);
 895                                         SCTP_STAT_INCR_COUNTER32(sctps_aborted);
 896                                         if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
 897                                             (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 898                                                 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 899                                         }
 900                                         SCTP_INP_RUNLOCK(inp);
 901                                         (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_5);
 902                                         return (0);
 903                                 } else {
 904                                         sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
 905                                 }
 906                         }
 907                         SCTP_TCB_UNLOCK(stcb);
 908                         SCTP_INP_RUNLOCK(inp);
 909                         return (0);
 910                 }
 911                 /* not reached */
 912         } else {
 913                 /* UDP model does not support this */
 914                 SCTP_INP_RUNLOCK(inp);
 915                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
 916                 return EOPNOTSUPP;
 917         }
 918 }
 919
 920 int
 921 sctp_shutdown(struct socket *so)
 922 {
 923         struct sctp_inpcb *inp;
 924
 925         inp = (struct sctp_inpcb *)so->so_pcb;
 926         if (inp == 0) {
 927                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 928                 return EINVAL;
 929         }
 930         SCTP_INP_RLOCK(inp);
 931         /* For UDP model this is a invalid call */
 932         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
 933                 /* Restore the flags that the soshutdown took away. */
 934                 so->so_rcv.sb_state &= ~SBS_CANTRCVMORE;
 935                 /* This proc will wakeup for read and do nothing (I hope) */
 936                 SCTP_INP_RUNLOCK(inp);
 937                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
 938                 return (EOPNOTSUPP);
 939         }
 940         /*
 941          * Ok if we reach here its the TCP model and it is either a SHUT_WR
 942          * or SHUT_RDWR. This means we put the shutdown flag against it.
 943          */
 944         {
 945                 struct sctp_tcb *stcb;
 946                 struct sctp_association *asoc;
 947
 948                 socantsendmore(so);
 949
 950                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
 951                 if (stcb == NULL) {
 952                         /*
 953                          * Ok we hit the case that the shutdown call was
 954                          * made after an abort or something. Nothing to do
 955                          * now.
 956                          */
 957                         SCTP_INP_RUNLOCK(inp);
 958                         return (0);
 959                 }
 960                 SCTP_TCB_LOCK(stcb);
 961                 asoc = &stcb->asoc;
 962                 if (TAILQ_EMPTY(&asoc->send_queue) &&
 963                     TAILQ_EMPTY(&asoc->sent_queue) &&
 964                     (asoc->stream_queue_cnt == 0)) {
 965                         if (asoc->locked_on_sending) {
 966                                 goto abort_anyway;
 967                         }
 968                         /* there is nothing queued to send, so I'm done... */
 969                         if (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) {
 970                                 /* only send SHUTDOWN the first time through */
 971                                 sctp_stop_timers_for_shutdown(stcb);
 972                                 sctp_send_shutdown(stcb,
 973                                     stcb->asoc.primary_destination);
 974                                 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_LOCKED);
 975                                 if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
 976                                     (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 977                                         SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 978                                 }
 979                                 SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT);
 980                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN,
 981                                     stcb->sctp_ep, stcb,
 982                                     asoc->primary_destination);
 983                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD,
 984                                     stcb->sctp_ep, stcb,
 985                                     asoc->primary_destination);
 986                         }
 987                 } else {
 988                         /*
 989                          * we still got (or just got) data to send, so set
 990                          * SHUTDOWN_PENDING
 991                          */
 992                         asoc->state |= SCTP_STATE_SHUTDOWN_PENDING;
 993                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb,
 994                             asoc->primary_destination);
 995
 996                         if (asoc->locked_on_sending) {
 997                                 /* Locked to send out the data */
 998                                 struct sctp_stream_queue_pending *sp;
 999
1000                                 sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead);
1001                                 if (sp == NULL) {
1002                                         SCTP_PRINTF("Error, sp is NULL, locked on sending is non-null strm:%d\n",
1003                                             asoc->locked_on_sending->stream_no);
1004                                 } else {
1005                                         if ((sp->length == 0) && (sp->msg_is_complete == 0)) {
1006                                                 asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT;
1007                                         }
1008                                 }
1009                         }
1010                         if (TAILQ_EMPTY(&asoc->send_queue) &&
1011                             TAILQ_EMPTY(&asoc->sent_queue) &&
1012                             (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
1013                                 struct mbuf *op_err;
1014
1015                 abort_anyway:
1016                                 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
1017                                     0, M_DONTWAIT, 1, MT_DATA);
1018                                 if (op_err) {
1019                                         /* Fill in the user initiated abort */
1020                                         struct sctp_paramhdr *ph;
1021                                         uint32_t *ippp;
1022
1023                                         SCTP_BUF_LEN(op_err) =
1024                                             sizeof(struct sctp_paramhdr) + sizeof(uint32_t);
1025                                         ph = mtod(op_err,
1026                                             struct sctp_paramhdr *);
1027                                         ph->param_type = htons(
1028                                             SCTP_CAUSE_USER_INITIATED_ABT);
1029                                         ph->param_length = htons(SCTP_BUF_LEN(op_err));
1030                                         ippp = (uint32_t *) (ph + 1);
1031                                         *ippp = htonl(SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6);
1032                                 }
1033 #if defined(SCTP_PANIC_ON_ABORT)
1034                                 panic("shutdown does an abort");
1035 #endif
1036                                 stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6;
1037                                 sctp_abort_an_association(stcb->sctp_ep, stcb,
1038                                     SCTP_RESPONSE_TO_USER_REQ,
1039                                     op_err, SCTP_SO_LOCKED);
1040                                 goto skip_unlock;
1041                         } else {
1042                                 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
1043                         }
1044                 }
1045                 SCTP_TCB_UNLOCK(stcb);
1046         }
1047 skip_unlock:
1048         SCTP_INP_RUNLOCK(inp);
1049         return 0;
1050 }
1051
1052 /*
1053  * copies a "user" presentable address and removes embedded scope, etc.
1054  * returns 0 on success, 1 on error
1055  */
1056 static uint32_t
1057 sctp_fill_user_address(struct sockaddr_storage *ss, struct sockaddr *sa)
1058 {
1059         struct sockaddr_in6 lsa6;
1060
1061         sa = (struct sockaddr *)sctp_recover_scope((struct sockaddr_in6 *)sa,
1062             &lsa6);
1063         memcpy(ss, sa, sa->sa_len);
1064         return (0);
1065 }
1066
1067
1068
1069 /*
1070  * NOTE: assumes addr lock is held
1071  */
1072 static size_t
1073 sctp_fill_up_addresses_vrf(struct sctp_inpcb *inp,
1074     struct sctp_tcb *stcb,
1075     size_t limit,
1076     struct sockaddr_storage *sas,
1077     uint32_t vrf_id)
1078 {
1079         struct sctp_ifn *sctp_ifn;
1080         struct sctp_ifa *sctp_ifa;
1081         int loopback_scope, ipv4_local_scope, local_scope, site_scope;
1082         size_t actual;
1083         int ipv4_addr_legal, ipv6_addr_legal;
1084         struct sctp_vrf *vrf;
1085
1086         actual = 0;
1087         if (limit <= 0)
1088                 return (actual);
1089
1090         if (stcb) {
1091                 /* Turn on all the appropriate scope */
1092                 loopback_scope = stcb->asoc.loopback_scope;
1093                 ipv4_local_scope = stcb->asoc.ipv4_local_scope;
1094                 local_scope = stcb->asoc.local_scope;
1095                 site_scope = stcb->asoc.site_scope;
1096         } else {
1097                 /* Turn on ALL scope, since we look at the EP */
1098                 loopback_scope = ipv4_local_scope = local_scope =
1099                     site_scope = 1;
1100         }
1101         ipv4_addr_legal = ipv6_addr_legal = 0;
1102         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1103                 ipv6_addr_legal = 1;
1104                 if (SCTP_IPV6_V6ONLY(inp) == 0) {
1105                         ipv4_addr_legal = 1;
1106                 }
1107         } else {
1108                 ipv4_addr_legal = 1;
1109         }
1110         vrf = sctp_find_vrf(vrf_id);
1111         if (vrf == NULL) {
1112                 return (0);
1113         }
1114         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1115                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
1116                         if ((loopback_scope == 0) &&
1117                             SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
1118                                 /* Skip loopback if loopback_scope not set */
1119                                 continue;
1120                         }
1121                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
1122                                 if (stcb) {
1123                                         /*
1124                                          * For the BOUND-ALL case, the list
1125                                          * associated with a TCB is Always
1126                                          * considered a reverse list.. i.e.
1127                                          * it lists addresses that are NOT
1128                                          * part of the association. If this
1129                                          * is one of those we must skip it.
1130                                          */
1131                                         if (sctp_is_addr_restricted(stcb,
1132                                             sctp_ifa)) {
1133                                                 continue;
1134                                         }
1135                                 }
1136                                 if ((sctp_ifa->address.sa.sa_family == AF_INET) &&
1137                                     (ipv4_addr_legal)) {
1138                                         struct sockaddr_in *sin;
1139
1140                                         sin = (struct sockaddr_in *)&sctp_ifa->address.sa;
1141                                         if (sin->sin_addr.s_addr == 0) {
1142                                                 /*
1143                                                  * we skip unspecifed
1144                                                  * addresses
1145                                                  */
1146                                                 continue;
1147                                         }
1148                                         if ((ipv4_local_scope == 0) &&
1149                                             (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
1150                                                 continue;
1151                                         }
1152                                         if (inp->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) {
1153                                                 in6_sin_2_v4mapsin6(sin, (struct sockaddr_in6 *)sas);
1154                                                 ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
1155                                                 sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(struct sockaddr_in6));
1156                                                 actual += sizeof(struct sockaddr_in6);
1157                                         } else {
1158                                                 memcpy(sas, sin, sizeof(*sin));
1159                                                 ((struct sockaddr_in *)sas)->sin_port = inp->sctp_lport;
1160                                                 sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(*sin));
1161                                                 actual += sizeof(*sin);
1162                                         }
1163                                         if (actual >= limit) {
1164                                                 return (actual);
1165                                         }
1166                                 } else if ((sctp_ifa->address.sa.sa_family == AF_INET6) &&
1167                                     (ipv6_addr_legal)) {
1168                                         struct sockaddr_in6 *sin6;
1169
1170                                         sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa;
1171                                         if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1172                                                 /*
1173                                                  * we skip unspecifed
1174                                                  * addresses
1175                                                  */
1176                                                 continue;
1177                                         }
1178                                         if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
1179                                                 if (local_scope == 0)
1180                                                         continue;
1181                                                 if (sin6->sin6_scope_id == 0) {
1182                                                         if (sa6_recoverscope(sin6) != 0)
1183                                                                 /*
1184                                                                  * bad link
1185                                                                  * local
1186                                                                  * address
1187                                                                  */
1188                                                                 continue;
1189                                                 }
1190                                         }
1191                                         if ((site_scope == 0) &&
1192                                             (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
1193                                                 continue;
1194                                         }
1195                                         memcpy(sas, sin6, sizeof(*sin6));
1196                                         ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
1197                                         sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(*sin6));
1198                                         actual += sizeof(*sin6);
1199                                         if (actual >= limit) {
1200                                                 return (actual);
1201                                         }
1202                                 }
1203                         }
1204                 }
1205         } else {
1206                 struct sctp_laddr *laddr;
1207
1208                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1209                         if (stcb) {
1210                                 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
1211                                         continue;
1212                                 }
1213                         }
1214                         if (sctp_fill_user_address(sas, &laddr->ifa->address.sa))
1215                                 continue;
1216
1217                         ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
1218                         sas = (struct sockaddr_storage *)((caddr_t)sas +
1219                             laddr->ifa->address.sa.sa_len);
1220                         actual += laddr->ifa->address.sa.sa_len;
1221                         if (actual >= limit) {
1222                                 return (actual);
1223                         }
1224                 }
1225         }
1226         return (actual);
1227 }
1228
1229 static size_t
1230 sctp_fill_up_addresses(struct sctp_inpcb *inp,
1231     struct sctp_tcb *stcb,
1232     size_t limit,
1233     struct sockaddr_storage *sas)
1234 {
1235         size_t size = 0;
1236
1237         SCTP_IPI_ADDR_RLOCK();
1238         /* fill up addresses for the endpoint's default vrf */
1239         size = sctp_fill_up_addresses_vrf(inp, stcb, limit, sas,
1240             inp->def_vrf_id);
1241         SCTP_IPI_ADDR_RUNLOCK();
1242         return (size);
1243 }
1244
1245 /*
1246  * NOTE: assumes addr lock is held
1247  */
1248 static int
1249 sctp_count_max_addresses_vrf(struct sctp_inpcb *inp, uint32_t vrf_id)
1250 {
1251         int cnt = 0;
1252         struct sctp_vrf *vrf = NULL;
1253
1254         /*
1255          * In both sub-set bound an bound_all cases we return the MAXIMUM
1256          * number of addresses that you COULD get. In reality the sub-set
1257          * bound may have an exclusion list for a given TCB OR in the
1258          * bound-all case a TCB may NOT include the loopback or other
1259          * addresses as well.
1260          */
1261         vrf = sctp_find_vrf(vrf_id);
1262         if (vrf == NULL) {
1263                 return (0);
1264         }
1265         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1266                 struct sctp_ifn *sctp_ifn;
1267                 struct sctp_ifa *sctp_ifa;
1268
1269                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
1270                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
1271                                 /* Count them if they are the right type */
1272                                 if (sctp_ifa->address.sa.sa_family == AF_INET) {
1273                                         if (inp->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)
1274                                                 cnt += sizeof(struct sockaddr_in6);
1275                                         else
1276                                                 cnt += sizeof(struct sockaddr_in);
1277
1278                                 } else if (sctp_ifa->address.sa.sa_family == AF_INET6)
1279                                         cnt += sizeof(struct sockaddr_in6);
1280                         }
1281                 }
1282         } else {
1283                 struct sctp_laddr *laddr;
1284
1285                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1286                         if (laddr->ifa->address.sa.sa_family == AF_INET) {
1287                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)
1288                                         cnt += sizeof(struct sockaddr_in6);
1289                                 else
1290                                         cnt += sizeof(struct sockaddr_in);
1291
1292                         } else if (laddr->ifa->address.sa.sa_family == AF_INET6)
1293                                 cnt += sizeof(struct sockaddr_in6);
1294                 }
1295         }
1296         return (cnt);
1297 }
1298
1299 static int
1300 sctp_count_max_addresses(struct sctp_inpcb *inp)
1301 {
1302         int cnt = 0;
1303
1304         SCTP_IPI_ADDR_RLOCK();
1305         /* count addresses for the endpoint's default VRF */
1306         cnt = sctp_count_max_addresses_vrf(inp, inp->def_vrf_id);
1307         SCTP_IPI_ADDR_RUNLOCK();
1308         return (cnt);
1309 }
1310
1311 static int
1312 sctp_do_connect_x(struct socket *so, struct sctp_inpcb *inp, void *optval,
1313     size_t optsize, void *p, int delay)
1314 {
1315         int error = 0;
1316         int creat_lock_on = 0;
1317         struct sctp_tcb *stcb = NULL;
1318         struct sockaddr *sa;
1319         int num_v6 = 0, num_v4 = 0, *totaddrp, totaddr;
1320         int added = 0;
1321         uint32_t vrf_id;
1322         int bad_addresses = 0;
1323         sctp_assoc_t *a_id;
1324
1325         SCTPDBG(SCTP_DEBUG_PCB1, "Connectx called\n");
1326
1327         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
1328             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
1329                 /* We are already connected AND the TCP model */
1330                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
1331                 return (EADDRINUSE);
1332         }
1333         if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
1334                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1335                 return (EINVAL);
1336         }
1337         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
1338                 SCTP_INP_RLOCK(inp);
1339                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1340                 SCTP_INP_RUNLOCK(inp);
1341         }
1342         if (stcb) {
1343                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
1344                 return (EALREADY);
1345         }
1346         SCTP_INP_INCR_REF(inp);
1347         SCTP_ASOC_CREATE_LOCK(inp);
1348         creat_lock_on = 1;
1349         if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
1350             (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
1351                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EFAULT);
1352                 error = EFAULT;
1353                 goto out_now;
1354         }
1355         totaddrp = (int *)optval;
1356         totaddr = *totaddrp;
1357         sa = (struct sockaddr *)(totaddrp + 1);
1358         stcb = sctp_connectx_helper_find(inp, sa, &totaddr, &num_v4, &num_v6, &error, (optsize - sizeof(int)), &bad_addresses);
1359         if ((stcb != NULL) || bad_addresses) {
1360                 /* Already have or am bring up an association */
1361                 SCTP_ASOC_CREATE_UNLOCK(inp);
1362                 creat_lock_on = 0;
1363                 if (stcb)
1364                         SCTP_TCB_UNLOCK(stcb);
1365                 if (bad_addresses == 0) {
1366                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
1367                         error = EALREADY;
1368                 }
1369                 goto out_now;
1370         }
1371 #ifdef INET6
1372         if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) &&
1373             (num_v6 > 0)) {
1374                 error = EINVAL;
1375                 goto out_now;
1376         }
1377         if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1378             (num_v4 > 0)) {
1379                 struct in6pcb *inp6;
1380
1381                 inp6 = (struct in6pcb *)inp;
1382                 if (SCTP_IPV6_V6ONLY(inp6)) {
1383                         /*
1384                          * if IPV6_V6ONLY flag, ignore connections destined
1385                          * to a v4 addr or v4-mapped addr
1386                          */
1387                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1388                         error = EINVAL;
1389                         goto out_now;
1390                 }
1391         }
1392 #endif                          /* INET6 */
1393         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
1394             SCTP_PCB_FLAGS_UNBOUND) {
1395                 /* Bind a ephemeral port */
1396                 error = sctp_inpcb_bind(so, NULL, NULL, p);
1397                 if (error) {
1398                         goto out_now;
1399                 }
1400         }
1401         /* FIX ME: do we want to pass in a vrf on the connect call? */
1402         vrf_id = inp->def_vrf_id;
1403
1404         /* We are GOOD to go */
1405         stcb = sctp_aloc_assoc(inp, sa, 1, &error, 0, vrf_id,
1406             (struct thread *)p
1407             );
1408         if (stcb == NULL) {
1409                 /* Gak! no memory */
1410                 goto out_now;
1411         }
1412         SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_COOKIE_WAIT);
1413         /* move to second address */
1414         if (sa->sa_family == AF_INET)
1415                 sa = (struct sockaddr *)((caddr_t)sa + sizeof(struct sockaddr_in));
1416         else
1417                 sa = (struct sockaddr *)((caddr_t)sa + sizeof(struct sockaddr_in6));
1418
1419         error = 0;
1420         added = sctp_connectx_helper_add(stcb, sa, (totaddr - 1), &error);
1421         /* Fill in the return id */
1422         if (error) {
1423                 (void)sctp_free_assoc(inp, stcb, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_12);
1424                 goto out_now;
1425         }
1426         a_id = (sctp_assoc_t *) optval;
1427         *a_id = sctp_get_associd(stcb);
1428
1429         /* initialize authentication parameters for the assoc */
1430         sctp_initialize_auth_params(inp, stcb);
1431
1432         if (delay) {
1433                 /* doing delayed connection */
1434                 stcb->asoc.delayed_connection = 1;
1435                 sctp_timer_start(SCTP_TIMER_TYPE_INIT, inp, stcb, stcb->asoc.primary_destination);
1436         } else {
1437                 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
1438                 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
1439         }
1440         SCTP_TCB_UNLOCK(stcb);
1441         if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
1442                 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
1443                 /* Set the connected flag so we can queue data */
1444                 soisconnecting(so);
1445         }
1446 out_now:
1447         if (creat_lock_on) {
1448                 SCTP_ASOC_CREATE_UNLOCK(inp);
1449         }
1450         SCTP_INP_DECR_REF(inp);
1451         return error;
1452 }
1453
1454 #define SCTP_FIND_STCB(inp, stcb, assoc_id) { \
1455         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||\
1456             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { \
1457                 SCTP_INP_RLOCK(inp); \
1458                 stcb = LIST_FIRST(&inp->sctp_asoc_list); \
1459                 if (stcb) { \
1460                         SCTP_TCB_LOCK(stcb); \
1461                 } \
1462                 SCTP_INP_RUNLOCK(inp); \
1463         } else if (assoc_id != 0) { \
1464                 stcb = sctp_findassociation_ep_asocid(inp, assoc_id, 1); \
1465                 if (stcb == NULL) { \
1466                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT); \
1467                         error = ENOENT; \
1468                         break; \
1469                 } \
1470         } else { \
1471                 stcb = NULL; \
1472         } \
1473   }
1474
1475
1476 #define SCTP_CHECK_AND_CAST(destp, srcp, type, size)  {\
1477         if (size < sizeof(type)) { \
1478                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); \
1479                 error = EINVAL; \
1480                 break; \
1481         } else { \
1482                 destp = (type *)srcp; \
1483         } \
1484       }
1485
1486 static int
1487 sctp_getopt(struct socket *so, int optname, void *optval, size_t *optsize,
1488     void *p)
1489 {
1490         struct sctp_inpcb *inp = NULL;
1491         int error, val = 0;
1492         struct sctp_tcb *stcb = NULL;
1493
1494         if (optval == NULL) {
1495                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1496                 return (EINVAL);
1497         }
1498         inp = (struct sctp_inpcb *)so->so_pcb;
1499         if (inp == 0) {
1500                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1501                 return EINVAL;
1502         }
1503         error = 0;
1504
1505         switch (optname) {
1506         case SCTP_NODELAY:
1507         case SCTP_AUTOCLOSE:
1508         case SCTP_EXPLICIT_EOR:
1509         case SCTP_AUTO_ASCONF:
1510         case SCTP_DISABLE_FRAGMENTS:
1511         case SCTP_I_WANT_MAPPED_V4_ADDR:
1512         case SCTP_USE_EXT_RCVINFO:
1513                 SCTP_INP_RLOCK(inp);
1514                 switch (optname) {
1515                 case SCTP_DISABLE_FRAGMENTS:
1516                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NO_FRAGMENT);
1517                         break;
1518                 case SCTP_I_WANT_MAPPED_V4_ADDR:
1519                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4);
1520                         break;
1521                 case SCTP_AUTO_ASCONF:
1522                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1523                                 /* only valid for bound all sockets */
1524                                 val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
1525                         } else {
1526                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1527                                 error = EINVAL;
1528                                 goto flags_out;
1529                         }
1530                         break;
1531                 case SCTP_EXPLICIT_EOR:
1532                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
1533                         break;
1534                 case SCTP_NODELAY:
1535                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NODELAY);
1536                         break;
1537                 case SCTP_USE_EXT_RCVINFO:
1538                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO);
1539                         break;
1540                 case SCTP_AUTOCLOSE:
1541                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTOCLOSE))
1542                                 val = TICKS_TO_SEC(inp->sctp_ep.auto_close_time);
1543                         else
1544                                 val = 0;
1545                         break;
1546
1547                 default:
1548                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
1549                         error = ENOPROTOOPT;
1550                 }               /* end switch (sopt->sopt_name) */
1551                 if (optname != SCTP_AUTOCLOSE) {
1552                         /* make it an "on/off" value */
1553                         val = (val != 0);
1554                 }
1555                 if (*optsize < sizeof(val)) {
1556                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1557                         error = EINVAL;
1558                 }
1559 flags_out:
1560                 SCTP_INP_RUNLOCK(inp);
1561                 if (error == 0) {
1562                         /* return the option value */
1563                         *(int *)optval = val;
1564                         *optsize = sizeof(val);
1565                 }
1566                 break;
1567         case SCTP_GET_PACKET_LOG:
1568                 {
1569 #ifdef  SCTP_PACKET_LOGGING
1570                         uint8_t *target;
1571                         int ret;
1572
1573                         SCTP_CHECK_AND_CAST(target, optval, uint8_t, *optsize);
1574                         ret = sctp_copy_out_packet_log(target, (int)*optsize);
1575                         *optsize = ret;
1576 #else
1577                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
1578                         error = EOPNOTSUPP;
1579 #endif
1580                         break;
1581                 }
1582         case SCTP_PARTIAL_DELIVERY_POINT:
1583                 {
1584                         uint32_t *value;
1585
1586                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1587                         *value = inp->partial_delivery_point;
1588                         *optsize = sizeof(uint32_t);
1589                 }
1590                 break;
1591         case SCTP_FRAGMENT_INTERLEAVE:
1592                 {
1593                         uint32_t *value;
1594
1595                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1596                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) {
1597                                 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) {
1598                                         *value = SCTP_FRAG_LEVEL_2;
1599                                 } else {
1600                                         *value = SCTP_FRAG_LEVEL_1;
1601                                 }
1602                         } else {
1603                                 *value = SCTP_FRAG_LEVEL_0;
1604                         }
1605                         *optsize = sizeof(uint32_t);
1606                 }
1607                 break;
1608         case SCTP_CMT_ON_OFF:
1609                 {
1610                         struct sctp_assoc_value *av;
1611
1612                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1613                         if (sctp_cmt_on_off) {
1614                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1615                                 if (stcb) {
1616                                         av->assoc_value = stcb->asoc.sctp_cmt_on_off;
1617                                         SCTP_TCB_UNLOCK(stcb);
1618
1619                                 } else {
1620                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
1621                                         error = ENOTCONN;
1622                                 }
1623                         } else {
1624                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
1625                                 error = ENOPROTOOPT;
1626                         }
1627                         *optsize = sizeof(*av);
1628                 }
1629                 break;
1630                 /* JRS - Get socket option for pluggable congestion control */
1631         case SCTP_PLUGGABLE_CC:
1632                 {
1633                         struct sctp_assoc_value *av;
1634
1635                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1636                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1637                         if (stcb) {
1638                                 av->assoc_value = stcb->asoc.congestion_control_module;
1639                                 SCTP_TCB_UNLOCK(stcb);
1640                         } else {
1641                                 av->assoc_value = inp->sctp_ep.sctp_default_cc_module;
1642                         }
1643                         *optsize = sizeof(*av);
1644                 }
1645                 break;
1646         case SCTP_GET_ADDR_LEN:
1647                 {
1648                         struct sctp_assoc_value *av;
1649
1650                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1651                         error = EINVAL;
1652 #ifdef INET
1653                         if (av->assoc_value == AF_INET) {
1654                                 av->assoc_value = sizeof(struct sockaddr_in);
1655                                 error = 0;
1656                         }
1657 #endif
1658 #ifdef INET6
1659                         if (av->assoc_value == AF_INET6) {
1660                                 av->assoc_value = sizeof(struct sockaddr_in6);
1661                                 error = 0;
1662                         }
1663 #endif
1664                         if (error) {
1665                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
1666                         }
1667                         *optsize = sizeof(*av);
1668                 }
1669                 break;
1670         case SCTP_GET_ASSOC_NUMBER:
1671                 {
1672                         uint32_t *value, cnt;
1673
1674                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1675                         cnt = 0;
1676                         SCTP_INP_RLOCK(inp);
1677                         LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
1678                                 cnt++;
1679                         }
1680                         SCTP_INP_RUNLOCK(inp);
1681                         *value = cnt;
1682                         *optsize = sizeof(uint32_t);
1683                 }
1684                 break;
1685
1686         case SCTP_GET_ASSOC_ID_LIST:
1687                 {
1688                         struct sctp_assoc_ids *ids;
1689                         unsigned int at, limit;
1690
1691                         SCTP_CHECK_AND_CAST(ids, optval, struct sctp_assoc_ids, *optsize);
1692                         at = 0;
1693                         limit = *optsize / sizeof(sctp_assoc_t);
1694                         SCTP_INP_RLOCK(inp);
1695                         LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
1696                                 if (at < limit) {
1697                                         ids->gaids_assoc_id[at++] = sctp_get_associd(stcb);
1698                                 } else {
1699                                         error = EINVAL;
1700                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
1701                                         break;
1702                                 }
1703                         }
1704                         SCTP_INP_RUNLOCK(inp);
1705                         *optsize = at * sizeof(sctp_assoc_t);
1706                 }
1707                 break;
1708         case SCTP_CONTEXT:
1709                 {
1710                         struct sctp_assoc_value *av;
1711
1712                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1713                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1714
1715                         if (stcb) {
1716                                 av->assoc_value = stcb->asoc.context;
1717                                 SCTP_TCB_UNLOCK(stcb);
1718                         } else {
1719                                 SCTP_INP_RLOCK(inp);
1720                                 av->assoc_value = inp->sctp_context;
1721                                 SCTP_INP_RUNLOCK(inp);
1722                         }
1723                         *optsize = sizeof(*av);
1724                 }
1725                 break;
1726         case SCTP_VRF_ID:
1727                 {
1728                         uint32_t *default_vrfid;
1729
1730                         SCTP_CHECK_AND_CAST(default_vrfid, optval, uint32_t, *optsize);
1731                         *default_vrfid = inp->def_vrf_id;
1732                         break;
1733                 }
1734         case SCTP_GET_ASOC_VRF:
1735                 {
1736                         struct sctp_assoc_value *id;
1737
1738                         SCTP_CHECK_AND_CAST(id, optval, struct sctp_assoc_value, *optsize);
1739                         SCTP_FIND_STCB(inp, stcb, id->assoc_id);
1740                         if (stcb == NULL) {
1741                                 error = EINVAL;
1742                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
1743                                 break;
1744                         }
1745                         id->assoc_value = stcb->asoc.vrf_id;
1746                         break;
1747                 }
1748         case SCTP_GET_VRF_IDS:
1749                 {
1750                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
1751                         error = EOPNOTSUPP;
1752                         break;
1753                 }
1754         case SCTP_GET_NONCE_VALUES:
1755                 {
1756                         struct sctp_get_nonce_values *gnv;
1757
1758                         SCTP_CHECK_AND_CAST(gnv, optval, struct sctp_get_nonce_values, *optsize);
1759                         SCTP_FIND_STCB(inp, stcb, gnv->gn_assoc_id);
1760
1761                         if (stcb) {
1762                                 gnv->gn_peers_tag = stcb->asoc.peer_vtag;
1763                                 gnv->gn_local_tag = stcb->asoc.my_vtag;
1764                                 SCTP_TCB_UNLOCK(stcb);
1765                         } else {
1766                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
1767                                 error = ENOTCONN;
1768                         }
1769                         *optsize = sizeof(*gnv);
1770                 }
1771                 break;
1772         case SCTP_DELAYED_SACK:
1773                 {
1774                         struct sctp_sack_info *sack;
1775
1776                         SCTP_CHECK_AND_CAST(sack, optval, struct sctp_sack_info, *optsize);
1777                         SCTP_FIND_STCB(inp, stcb, sack->sack_assoc_id);
1778                         if (stcb) {
1779                                 sack->sack_delay = stcb->asoc.delayed_ack;
1780                                 sack->sack_freq = stcb->asoc.sack_freq;
1781                                 SCTP_TCB_UNLOCK(stcb);
1782                         } else {
1783                                 SCTP_INP_RLOCK(inp);
1784                                 sack->sack_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
1785                                 sack->sack_freq = inp->sctp_ep.sctp_sack_freq;
1786                                 SCTP_INP_RUNLOCK(inp);
1787                         }
1788                         *optsize = sizeof(*sack);
1789                 }
1790                 break;
1791
1792         case SCTP_GET_SNDBUF_USE:
1793                 {
1794                         struct sctp_sockstat *ss;
1795
1796                         SCTP_CHECK_AND_CAST(ss, optval, struct sctp_sockstat, *optsize);
1797                         SCTP_FIND_STCB(inp, stcb, ss->ss_assoc_id);
1798
1799                         if (stcb) {
1800                                 ss->ss_total_sndbuf = stcb->asoc.total_output_queue_size;
1801                                 ss->ss_total_recv_buf = (stcb->asoc.size_on_reasm_queue +
1802                                     stcb->asoc.size_on_all_streams);
1803                                 SCTP_TCB_UNLOCK(stcb);
1804                         } else {
1805                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
1806                                 error = ENOTCONN;
1807                         }
1808                         *optsize = sizeof(struct sctp_sockstat);
1809                 }
1810                 break;
1811         case SCTP_MAX_BURST:
1812                 {
1813                         uint8_t *value;
1814
1815                         SCTP_CHECK_AND_CAST(value, optval, uint8_t, *optsize);
1816
1817                         SCTP_INP_RLOCK(inp);
1818                         *value = inp->sctp_ep.max_burst;
1819                         SCTP_INP_RUNLOCK(inp);
1820                         *optsize = sizeof(uint8_t);
1821                 }
1822                 break;
1823         case SCTP_MAXSEG:
1824                 {
1825                         struct sctp_assoc_value *av;
1826                         int ovh;
1827
1828                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1829                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1830
1831                         if (stcb) {
1832                                 av->assoc_value = sctp_get_frag_point(stcb, &stcb->asoc);
1833                                 SCTP_TCB_UNLOCK(stcb);
1834                         } else {
1835                                 SCTP_INP_RLOCK(inp);
1836                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1837                                         ovh = SCTP_MED_OVERHEAD;
1838                                 } else {
1839                                         ovh = SCTP_MED_V4_OVERHEAD;
1840                                 }
1841                                 if (inp->sctp_frag_point >= SCTP_DEFAULT_MAXSEGMENT)
1842                                         av->assoc_value = 0;
1843                                 else
1844                                         av->assoc_value = inp->sctp_frag_point - ovh;
1845                                 SCTP_INP_RUNLOCK(inp);
1846                         }
1847                         *optsize = sizeof(struct sctp_assoc_value);
1848                 }
1849                 break;
1850         case SCTP_GET_STAT_LOG:
1851                 error = sctp_fill_stat_log(optval, optsize);
1852                 break;
1853         case SCTP_EVENTS:
1854                 {
1855                         struct sctp_event_subscribe *events;
1856
1857                         SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, *optsize);
1858                         memset(events, 0, sizeof(*events));
1859                         SCTP_INP_RLOCK(inp);
1860                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT))
1861                                 events->sctp_data_io_event = 1;
1862
1863                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT))
1864                                 events->sctp_association_event = 1;
1865
1866                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT))
1867                                 events->sctp_address_event = 1;
1868
1869                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT))
1870                                 events->sctp_send_failure_event = 1;
1871
1872                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR))
1873                                 events->sctp_peer_error_event = 1;
1874
1875                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT))
1876                                 events->sctp_shutdown_event = 1;
1877
1878                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT))
1879                                 events->sctp_partial_delivery_event = 1;
1880
1881                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT))
1882                                 events->sctp_adaptation_layer_event = 1;
1883
1884                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT))
1885                                 events->sctp_authentication_event = 1;
1886
1887                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT))
1888                                 events->sctp_stream_reset_events = 1;
1889                         SCTP_INP_RUNLOCK(inp);
1890                         *optsize = sizeof(struct sctp_event_subscribe);
1891                 }
1892                 break;
1893
1894         case SCTP_ADAPTATION_LAYER:
1895                 {
1896                         uint32_t *value;
1897
1898                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1899
1900                         SCTP_INP_RLOCK(inp);
1901                         *value = inp->sctp_ep.adaptation_layer_indicator;
1902                         SCTP_INP_RUNLOCK(inp);
1903                         *optsize = sizeof(uint32_t);
1904                 }
1905                 break;
1906         case SCTP_SET_INITIAL_DBG_SEQ:
1907                 {
1908                         uint32_t *value;
1909
1910                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1911                         SCTP_INP_RLOCK(inp);
1912                         *value = inp->sctp_ep.initial_sequence_debug;
1913                         SCTP_INP_RUNLOCK(inp);
1914                         *optsize = sizeof(uint32_t);
1915                 }
1916                 break;
1917         case SCTP_GET_LOCAL_ADDR_SIZE:
1918                 {
1919                         uint32_t *value;
1920
1921                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1922                         SCTP_INP_RLOCK(inp);
1923                         *value = sctp_count_max_addresses(inp);
1924                         SCTP_INP_RUNLOCK(inp);
1925                         *optsize = sizeof(uint32_t);
1926                 }
1927                 break;
1928         case SCTP_GET_REMOTE_ADDR_SIZE:
1929                 {
1930                         uint32_t *value;
1931                         size_t size;
1932                         struct sctp_nets *net;
1933
1934                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1935                         /* FIXME MT: change to sctp_assoc_value? */
1936                         SCTP_FIND_STCB(inp, stcb, (sctp_assoc_t) * value);
1937
1938                         if (stcb) {
1939                                 size = 0;
1940                                 /* Count the sizes */
1941                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1942                                         if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) ||
1943                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) {
1944                                                 size += sizeof(struct sockaddr_in6);
1945                                         } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) {
1946                                                 size += sizeof(struct sockaddr_in);
1947                                         } else {
1948                                                 /* huh */
1949                                                 break;
1950                                         }
1951                                 }
1952                                 SCTP_TCB_UNLOCK(stcb);
1953                                 *value = (uint32_t) size;
1954                         } else {
1955                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
1956                                 error = ENOTCONN;
1957                         }
1958                         *optsize = sizeof(uint32_t);
1959                 }
1960                 break;
1961         case SCTP_GET_PEER_ADDRESSES:
1962                 /*
1963                  * Get the address information, an array is passed in to
1964                  * fill up we pack it.
1965                  */
1966                 {
1967                         size_t cpsz, left;
1968                         struct sockaddr_storage *sas;
1969                         struct sctp_nets *net;
1970                         struct sctp_getaddresses *saddr;
1971
1972                         SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize);
1973                         SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id);
1974
1975                         if (stcb) {
1976                                 left = (*optsize) - sizeof(struct sctp_getaddresses);
1977                                 *optsize = sizeof(struct sctp_getaddresses);
1978                                 sas = (struct sockaddr_storage *)&saddr->addr[0];
1979
1980                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1981                                         if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) ||
1982                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) {
1983                                                 cpsz = sizeof(struct sockaddr_in6);
1984                                         } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) {
1985                                                 cpsz = sizeof(struct sockaddr_in);
1986                                         } else {
1987                                                 /* huh */
1988                                                 break;
1989                                         }
1990                                         if (left < cpsz) {
1991                                                 /* not enough room. */
1992                                                 break;
1993                                         }
1994                                         if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) &&
1995                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET)) {
1996                                                 /* Must map the address */
1997                                                 in6_sin_2_v4mapsin6((struct sockaddr_in *)&net->ro._l_addr,
1998                                                     (struct sockaddr_in6 *)sas);
1999                                         } else {
2000                                                 memcpy(sas, &net->ro._l_addr, cpsz);
2001                                         }
2002                                         ((struct sockaddr_in *)sas)->sin_port = stcb->rport;
2003
2004                                         sas = (struct sockaddr_storage *)((caddr_t)sas + cpsz);
2005                                         left -= cpsz;
2006                                         *optsize += cpsz;
2007                                 }
2008                                 SCTP_TCB_UNLOCK(stcb);
2009                         } else {
2010                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
2011                                 error = ENOENT;
2012                         }
2013                 }
2014                 break;
2015         case SCTP_GET_LOCAL_ADDRESSES:
2016                 {
2017                         size_t limit, actual;
2018                         struct sockaddr_storage *sas;
2019                         struct sctp_getaddresses *saddr;
2020
2021                         SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize);
2022                         SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id);
2023
2024                         sas = (struct sockaddr_storage *)&saddr->addr[0];
2025                         limit = *optsize - sizeof(sctp_assoc_t);
2026                         actual = sctp_fill_up_addresses(inp, stcb, limit, sas);
2027                         if (stcb) {
2028                                 SCTP_TCB_UNLOCK(stcb);
2029                         }
2030                         *optsize = sizeof(struct sockaddr_storage) + actual;
2031                 }
2032                 break;
2033         case SCTP_PEER_ADDR_PARAMS:
2034                 {
2035                         struct sctp_paddrparams *paddrp;
2036                         struct sctp_nets *net;
2037
2038                         SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, *optsize);
2039                         SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id);
2040
2041                         net = NULL;
2042                         if (stcb) {
2043                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address);
2044                         } else {
2045                                 /*
2046                                  * We increment here since
2047                                  * sctp_findassociation_ep_addr() wil do a
2048                                  * decrement if it finds the stcb as long as
2049                                  * the locked tcb (last argument) is NOT a
2050                                  * TCB.. aka NULL.
2051                                  */
2052                                 SCTP_INP_INCR_REF(inp);
2053                                 stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddrp->spp_address, &net, NULL, NULL);
2054                                 if (stcb == NULL) {
2055                                         SCTP_INP_DECR_REF(inp);
2056                                 }
2057                         }
2058                         if (stcb && (net == NULL)) {
2059                                 struct sockaddr *sa;
2060
2061                                 sa = (struct sockaddr *)&paddrp->spp_address;
2062                                 if (sa->sa_family == AF_INET) {
2063                                         struct sockaddr_in *sin;
2064
2065                                         sin = (struct sockaddr_in *)sa;
2066                                         if (sin->sin_addr.s_addr) {
2067                                                 error = EINVAL;
2068                                                 SCTP_TCB_UNLOCK(stcb);
2069                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2070                                                 break;
2071                                         }
2072                                 } else if (sa->sa_family == AF_INET6) {
2073                                         struct sockaddr_in6 *sin6;
2074
2075                                         sin6 = (struct sockaddr_in6 *)sa;
2076                                         if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2077                                                 error = EINVAL;
2078                                                 SCTP_TCB_UNLOCK(stcb);
2079                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2080                                                 break;
2081                                         }
2082                                 } else {
2083                                         error = EAFNOSUPPORT;
2084                                         SCTP_TCB_UNLOCK(stcb);
2085                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2086                                         break;
2087                                 }
2088                         }
2089                         if (stcb) {
2090                                 /* Applys to the specific association */
2091                                 paddrp->spp_flags = 0;
2092                                 if (net) {
2093                                         int ovh;
2094
2095                                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2096                                                 ovh = SCTP_MED_OVERHEAD;
2097                                         } else {
2098                                                 ovh = SCTP_MED_V4_OVERHEAD;
2099                                         }
2100
2101
2102                                         paddrp->spp_pathmaxrxt = net->failure_threshold;
2103                                         paddrp->spp_pathmtu = net->mtu - ovh;
2104                                         /* get flags for HB */
2105                                         if (net->dest_state & SCTP_ADDR_NOHB)
2106                                                 paddrp->spp_flags |= SPP_HB_DISABLE;
2107                                         else
2108                                                 paddrp->spp_flags |= SPP_HB_ENABLE;
2109                                         /* get flags for PMTU */
2110                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
2111                                                 paddrp->spp_flags |= SPP_PMTUD_ENABLE;
2112                                         } else {
2113                                                 paddrp->spp_flags |= SPP_PMTUD_DISABLE;
2114                                         }
2115 #ifdef INET
2116                                         if (net->ro._l_addr.sin.sin_family == AF_INET) {
2117                                                 paddrp->spp_ipv4_tos = net->tos_flowlabel & 0x000000fc;
2118                                                 paddrp->spp_flags |= SPP_IPV4_TOS;
2119                                         }
2120 #endif
2121 #ifdef INET6
2122                                         if (net->ro._l_addr.sin6.sin6_family == AF_INET6) {
2123                                                 paddrp->spp_ipv6_flowlabel = net->tos_flowlabel;
2124                                                 paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
2125                                         }
2126 #endif
2127                                 } else {
2128                                         /*
2129                                          * No destination so return default
2130                                          * value
2131                                          */
2132                                         int cnt = 0;
2133
2134                                         paddrp->spp_pathmaxrxt = stcb->asoc.def_net_failure;
2135                                         paddrp->spp_pathmtu = sctp_get_frag_point(stcb, &stcb->asoc);
2136 #ifdef INET
2137                                         paddrp->spp_ipv4_tos = stcb->asoc.default_tos & 0x000000fc;
2138                                         paddrp->spp_flags |= SPP_IPV4_TOS;
2139 #endif
2140 #ifdef INET6
2141                                         paddrp->spp_ipv6_flowlabel = stcb->asoc.default_flowlabel;
2142                                         paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
2143 #endif
2144                                         /* default settings should be these */
2145                                         if (stcb->asoc.hb_is_disabled == 0) {
2146                                                 paddrp->spp_flags |= SPP_HB_ENABLE;
2147                                         } else {
2148                                                 paddrp->spp_flags |= SPP_HB_DISABLE;
2149                                         }
2150                                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2151                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
2152                                                         cnt++;
2153                                                 }
2154                                         }
2155                                         if (cnt) {
2156                                                 paddrp->spp_flags |= SPP_PMTUD_ENABLE;
2157                                         }
2158                                 }
2159                                 paddrp->spp_hbinterval = stcb->asoc.heart_beat_delay;
2160                                 paddrp->spp_assoc_id = sctp_get_associd(stcb);
2161                                 SCTP_TCB_UNLOCK(stcb);
2162                         } else {
2163                                 /* Use endpoint defaults */
2164                                 SCTP_INP_RLOCK(inp);
2165                                 paddrp->spp_pathmaxrxt = inp->sctp_ep.def_net_failure;
2166                                 paddrp->spp_hbinterval = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
2167                                 paddrp->spp_assoc_id = (sctp_assoc_t) 0;
2168                                 /* get inp's default */
2169 #ifdef INET
2170                                 paddrp->spp_ipv4_tos = inp->ip_inp.inp.inp_ip_tos;
2171                                 paddrp->spp_flags |= SPP_IPV4_TOS;
2172 #endif
2173 #ifdef INET6
2174                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2175                                         paddrp->spp_ipv6_flowlabel = ((struct in6pcb *)inp)->in6p_flowinfo;
2176                                         paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
2177                                 }
2178 #endif
2179                                 /* can't return this */
2180                                 paddrp->spp_pathmtu = 0;
2181
2182                                 /* default behavior, no stcb */
2183                                 paddrp->spp_flags = SPP_PMTUD_ENABLE;
2184
2185                                 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
2186                                         paddrp->spp_flags |= SPP_HB_ENABLE;
2187                                 } else {
2188                                         paddrp->spp_flags |= SPP_HB_DISABLE;
2189                                 }
2190                                 SCTP_INP_RUNLOCK(inp);
2191                         }
2192                         *optsize = sizeof(struct sctp_paddrparams);
2193                 }
2194                 break;
2195         case SCTP_GET_PEER_ADDR_INFO:
2196                 {
2197                         struct sctp_paddrinfo *paddri;
2198                         struct sctp_nets *net;
2199
2200                         SCTP_CHECK_AND_CAST(paddri, optval, struct sctp_paddrinfo, *optsize);
2201                         SCTP_FIND_STCB(inp, stcb, paddri->spinfo_assoc_id);
2202
2203                         net = NULL;
2204                         if (stcb) {
2205                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddri->spinfo_address);
2206                         } else {
2207                                 /*
2208                                  * We increment here since
2209                                  * sctp_findassociation_ep_addr() wil do a
2210                                  * decrement if it finds the stcb as long as
2211                                  * the locked tcb (last argument) is NOT a
2212                                  * TCB.. aka NULL.
2213                                  */
2214                                 SCTP_INP_INCR_REF(inp);
2215                                 stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddri->spinfo_address, &net, NULL, NULL);
2216                                 if (stcb == NULL) {
2217                                         SCTP_INP_DECR_REF(inp);
2218                                 }
2219                         }
2220
2221                         if ((stcb) && (net)) {
2222                                 paddri->spinfo_state = net->dest_state & (SCTP_REACHABLE_MASK | SCTP_ADDR_NOHB);
2223                                 paddri->spinfo_cwnd = net->cwnd;
2224                                 paddri->spinfo_srtt = ((net->lastsa >> 2) + net->lastsv) >> 1;
2225                                 paddri->spinfo_rto = net->RTO;
2226                                 paddri->spinfo_assoc_id = sctp_get_associd(stcb);
2227                                 SCTP_TCB_UNLOCK(stcb);
2228                         } else {
2229                                 if (stcb) {
2230                                         SCTP_TCB_UNLOCK(stcb);
2231                                 }
2232                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
2233                                 error = ENOENT;
2234                         }
2235                         *optsize = sizeof(struct sctp_paddrinfo);
2236                 }
2237                 break;
2238         case SCTP_PCB_STATUS:
2239                 {
2240                         struct sctp_pcbinfo *spcb;
2241
2242                         SCTP_CHECK_AND_CAST(spcb, optval, struct sctp_pcbinfo, *optsize);
2243                         sctp_fill_pcbinfo(spcb);
2244                         *optsize = sizeof(struct sctp_pcbinfo);
2245                 }
2246                 break;
2247
2248         case SCTP_STATUS:
2249                 {
2250                         struct sctp_nets *net;
2251                         struct sctp_status *sstat;
2252
2253                         SCTP_CHECK_AND_CAST(sstat, optval, struct sctp_status, *optsize);
2254                         SCTP_FIND_STCB(inp, stcb, sstat->sstat_assoc_id);
2255
2256                         if (stcb == NULL) {
2257                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2258                                 error = EINVAL;
2259                                 break;
2260                         }
2261                         /*
2262                          * I think passing the state is fine since
2263                          * sctp_constants.h will be available to the user
2264                          * land.
2265                          */
2266                         sstat->sstat_state = stcb->asoc.state;
2267                         sstat->sstat_rwnd = stcb->asoc.peers_rwnd;
2268                         sstat->sstat_unackdata = stcb->asoc.sent_queue_cnt;
2269                         /*
2270                          * We can't include chunks that have been passed to
2271                          * the socket layer. Only things in queue.
2272                          */
2273                         sstat->sstat_penddata = (stcb->asoc.cnt_on_reasm_queue +
2274                             stcb->asoc.cnt_on_all_streams);
2275
2276
2277                         sstat->sstat_instrms = stcb->asoc.streamincnt;
2278                         sstat->sstat_outstrms = stcb->asoc.streamoutcnt;
2279                         sstat->sstat_fragmentation_point = sctp_get_frag_point(stcb, &stcb->asoc);
2280                         memcpy(&sstat->sstat_primary.spinfo_address,
2281                             &stcb->asoc.primary_destination->ro._l_addr,
2282                             ((struct sockaddr *)(&stcb->asoc.primary_destination->ro._l_addr))->sa_len);
2283                         net = stcb->asoc.primary_destination;
2284                         ((struct sockaddr_in *)&sstat->sstat_primary.spinfo_address)->sin_port = stcb->rport;
2285                         /*
2286                          * Again the user can get info from sctp_constants.h
2287                          * for what the state of the network is.
2288                          */
2289                         sstat->sstat_primary.spinfo_state = net->dest_state & SCTP_REACHABLE_MASK;
2290                         sstat->sstat_primary.spinfo_cwnd = net->cwnd;
2291                         sstat->sstat_primary.spinfo_srtt = net->lastsa;
2292                         sstat->sstat_primary.spinfo_rto = net->RTO;
2293                         sstat->sstat_primary.spinfo_mtu = net->mtu;
2294                         sstat->sstat_primary.spinfo_assoc_id = sctp_get_associd(stcb);
2295                         SCTP_TCB_UNLOCK(stcb);
2296                         *optsize = sizeof(*sstat);
2297                 }
2298                 break;
2299         case SCTP_RTOINFO:
2300                 {
2301                         struct sctp_rtoinfo *srto;
2302
2303                         SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, *optsize);
2304                         SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id);
2305
2306                         if (stcb) {
2307                                 srto->srto_initial = stcb->asoc.initial_rto;
2308                                 srto->srto_max = stcb->asoc.maxrto;
2309                                 srto->srto_min = stcb->asoc.minrto;
2310                                 SCTP_TCB_UNLOCK(stcb);
2311                         } else {
2312                                 SCTP_INP_RLOCK(inp);
2313                                 srto->srto_initial = inp->sctp_ep.initial_rto;
2314                                 srto->srto_max = inp->sctp_ep.sctp_maxrto;
2315                                 srto->srto_min = inp->sctp_ep.sctp_minrto;
2316                                 SCTP_INP_RUNLOCK(inp);
2317                         }
2318                         *optsize = sizeof(*srto);
2319                 }
2320                 break;
2321         case SCTP_ASSOCINFO:
2322                 {
2323                         struct sctp_assocparams *sasoc;
2324                         uint32_t oldval;
2325
2326                         SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, *optsize);
2327                         SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id);
2328
2329                         if (stcb) {
2330                                 oldval = sasoc->sasoc_cookie_life;
2331                                 sasoc->sasoc_cookie_life = TICKS_TO_MSEC(stcb->asoc.cookie_life);
2332                                 sasoc->sasoc_asocmaxrxt = stcb->asoc.max_send_times;
2333                                 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets;
2334                                 sasoc->sasoc_peer_rwnd = stcb->asoc.peers_rwnd;
2335                                 sasoc->sasoc_local_rwnd = stcb->asoc.my_rwnd;
2336                                 SCTP_TCB_UNLOCK(stcb);
2337                         } else {
2338                                 SCTP_INP_RLOCK(inp);
2339                                 sasoc->sasoc_cookie_life = TICKS_TO_MSEC(inp->sctp_ep.def_cookie_life);
2340                                 sasoc->sasoc_asocmaxrxt = inp->sctp_ep.max_send_times;
2341                                 sasoc->sasoc_number_peer_destinations = 0;
2342                                 sasoc->sasoc_peer_rwnd = 0;
2343                                 sasoc->sasoc_local_rwnd = sbspace(&inp->sctp_socket->so_rcv);
2344                                 SCTP_INP_RUNLOCK(inp);
2345                         }
2346                         *optsize = sizeof(*sasoc);
2347                 }
2348                 break;
2349         case SCTP_DEFAULT_SEND_PARAM:
2350                 {
2351                         struct sctp_sndrcvinfo *s_info;
2352
2353                         SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, *optsize);
2354                         SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id);
2355
2356                         if (stcb) {
2357                                 memcpy(s_info, &stcb->asoc.def_send, sizeof(stcb->asoc.def_send));
2358                                 SCTP_TCB_UNLOCK(stcb);
2359                         } else {
2360                                 SCTP_INP_RLOCK(inp);
2361                                 memcpy(s_info, &inp->def_send, sizeof(inp->def_send));
2362                                 SCTP_INP_RUNLOCK(inp);
2363                         }
2364                         *optsize = sizeof(*s_info);
2365                 }
2366                 break;
2367         case SCTP_INITMSG:
2368                 {
2369                         struct sctp_initmsg *sinit;
2370
2371                         SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, *optsize);
2372                         SCTP_INP_RLOCK(inp);
2373                         sinit->sinit_num_ostreams = inp->sctp_ep.pre_open_stream_count;
2374                         sinit->sinit_max_instreams = inp->sctp_ep.max_open_streams_intome;
2375                         sinit->sinit_max_attempts = inp->sctp_ep.max_init_times;
2376                         sinit->sinit_max_init_timeo = inp->sctp_ep.initial_init_rto_max;
2377                         SCTP_INP_RUNLOCK(inp);
2378                         *optsize = sizeof(*sinit);
2379                 }
2380                 break;
2381         case SCTP_PRIMARY_ADDR:
2382                 /* we allow a "get" operation on this */
2383                 {
2384                         struct sctp_setprim *ssp;
2385
2386                         SCTP_CHECK_AND_CAST(ssp, optval, struct sctp_setprim, *optsize);
2387                         SCTP_FIND_STCB(inp, stcb, ssp->ssp_assoc_id);
2388
2389                         if (stcb) {
2390                                 /* simply copy out the sockaddr_storage... */
2391                                 int len;
2392
2393                                 len = *optsize;
2394                                 if (len > stcb->asoc.primary_destination->ro._l_addr.sa.sa_len)
2395                                         len = stcb->asoc.primary_destination->ro._l_addr.sa.sa_len;
2396
2397                                 memcpy(&ssp->ssp_addr,
2398                                     &stcb->asoc.primary_destination->ro._l_addr,
2399                                     len);
2400                                 SCTP_TCB_UNLOCK(stcb);
2401                         } else {
2402                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2403                                 error = EINVAL;
2404                         }
2405                         *optsize = sizeof(*ssp);
2406                 }
2407                 break;
2408
2409         case SCTP_HMAC_IDENT:
2410                 {
2411                         struct sctp_hmacalgo *shmac;
2412                         sctp_hmaclist_t *hmaclist;
2413                         uint32_t size;
2414                         int i;
2415
2416                         SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, *optsize);
2417
2418                         SCTP_INP_RLOCK(inp);
2419                         hmaclist = inp->sctp_ep.local_hmacs;
2420                         if (hmaclist == NULL) {
2421                                 /* no HMACs to return */
2422                                 *optsize = sizeof(*shmac);
2423                                 SCTP_INP_RUNLOCK(inp);
2424                                 break;
2425                         }
2426                         /* is there room for all of the hmac ids? */
2427                         size = sizeof(*shmac) + (hmaclist->num_algo *
2428                             sizeof(shmac->shmac_idents[0]));
2429                         if ((size_t)(*optsize) < size) {
2430                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2431                                 error = EINVAL;
2432                                 SCTP_INP_RUNLOCK(inp);
2433                                 break;
2434                         }
2435                         /* copy in the list */
2436                         for (i = 0; i < hmaclist->num_algo; i++)
2437                                 shmac->shmac_idents[i] = hmaclist->hmac[i];
2438                         SCTP_INP_RUNLOCK(inp);
2439                         *optsize = size;
2440                         break;
2441                 }
2442         case SCTP_AUTH_ACTIVE_KEY:
2443                 {
2444                         struct sctp_authkeyid *scact;
2445
2446                         SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, *optsize);
2447                         SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id);
2448
2449                         if (stcb) {
2450                                 /* get the active key on the assoc */
2451                                 scact->scact_keynumber = stcb->asoc.authinfo.assoc_keyid;
2452                                 SCTP_TCB_UNLOCK(stcb);
2453                         } else {
2454                                 /* get the endpoint active key */
2455                                 SCTP_INP_RLOCK(inp);
2456                                 scact->scact_keynumber = inp->sctp_ep.default_keyid;
2457                                 SCTP_INP_RUNLOCK(inp);
2458                         }
2459                         *optsize = sizeof(*scact);
2460                         break;
2461                 }
2462         case SCTP_LOCAL_AUTH_CHUNKS:
2463                 {
2464                         struct sctp_authchunks *sac;
2465                         sctp_auth_chklist_t *chklist = NULL;
2466                         size_t size = 0;
2467
2468                         SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize);
2469                         SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id);
2470
2471                         if (stcb) {
2472                                 /* get off the assoc */
2473                                 chklist = stcb->asoc.local_auth_chunks;
2474                                 /* is there enough space? */
2475                                 size = sctp_auth_get_chklist_size(chklist);
2476                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2477                                         error = EINVAL;
2478                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2479                                 } else {
2480                                         /* copy in the chunks */
2481                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2482                                 }
2483                                 SCTP_TCB_UNLOCK(stcb);
2484                         } else {
2485                                 /* get off the endpoint */
2486                                 SCTP_INP_RLOCK(inp);
2487                                 chklist = inp->sctp_ep.local_auth_chunks;
2488                                 /* is there enough space? */
2489                                 size = sctp_auth_get_chklist_size(chklist);
2490                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2491                                         error = EINVAL;
2492                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2493                                 } else {
2494                                         /* copy in the chunks */
2495                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2496                                 }
2497                                 SCTP_INP_RUNLOCK(inp);
2498                         }
2499                         *optsize = sizeof(struct sctp_authchunks) + size;
2500                         break;
2501                 }
2502         case SCTP_PEER_AUTH_CHUNKS:
2503                 {
2504                         struct sctp_authchunks *sac;
2505                         sctp_auth_chklist_t *chklist = NULL;
2506                         size_t size = 0;
2507
2508                         SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize);
2509                         SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id);
2510
2511                         if (stcb) {
2512                                 /* get off the assoc */
2513                                 chklist = stcb->asoc.peer_auth_chunks;
2514                                 /* is there enough space? */
2515                                 size = sctp_auth_get_chklist_size(chklist);
2516                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2517                                         error = EINVAL;
2518                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2519                                 } else {
2520                                         /* copy in the chunks */
2521                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2522                                 }
2523                                 SCTP_TCB_UNLOCK(stcb);
2524                         } else {
2525                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
2526                                 error = ENOENT;
2527                         }
2528                         *optsize = sizeof(struct sctp_authchunks) + size;
2529                         break;
2530                 }
2531
2532
2533         default:
2534                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
2535                 error = ENOPROTOOPT;
2536                 *optsize = 0;
2537                 break;
2538         }                       /* end switch (sopt->sopt_name) */
2539         return (error);
2540 }
2541
2542 static int
2543 sctp_setopt(struct socket *so, int optname, void *optval, size_t optsize,
2544     void *p)
2545 {
2546         int error, set_opt;
2547         uint32_t *mopt;
2548         struct sctp_tcb *stcb = NULL;
2549         struct sctp_inpcb *inp = NULL;
2550         uint32_t vrf_id;
2551
2552         if (optval == NULL) {
2553                 SCTP_PRINTF("optval is NULL\n");
2554                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2555                 return (EINVAL);
2556         }
2557         inp = (struct sctp_inpcb *)so->so_pcb;
2558         if (inp == 0) {
2559                 SCTP_PRINTF("inp is NULL?\n");
2560                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2561                 return EINVAL;
2562         }
2563         vrf_id = inp->def_vrf_id;
2564
2565         error = 0;
2566         switch (optname) {
2567         case SCTP_NODELAY:
2568         case SCTP_AUTOCLOSE:
2569         case SCTP_AUTO_ASCONF:
2570         case SCTP_EXPLICIT_EOR:
2571         case SCTP_DISABLE_FRAGMENTS:
2572         case SCTP_USE_EXT_RCVINFO:
2573         case SCTP_I_WANT_MAPPED_V4_ADDR:
2574                 /* copy in the option value */
2575                 SCTP_CHECK_AND_CAST(mopt, optval, uint32_t, optsize);
2576                 set_opt = 0;
2577                 if (error)
2578                         break;
2579                 switch (optname) {
2580                 case SCTP_DISABLE_FRAGMENTS:
2581                         set_opt = SCTP_PCB_FLAGS_NO_FRAGMENT;
2582                         break;
2583                 case SCTP_AUTO_ASCONF:
2584                         /*
2585                          * NOTE: we don't really support this flag
2586                          */
2587                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
2588                                 /* only valid for bound all sockets */
2589                                 set_opt = SCTP_PCB_FLAGS_AUTO_ASCONF;
2590                         } else {
2591                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2592                                 return (EINVAL);
2593                         }
2594                         break;
2595                 case SCTP_EXPLICIT_EOR:
2596                         set_opt = SCTP_PCB_FLAGS_EXPLICIT_EOR;
2597                         break;
2598                 case SCTP_USE_EXT_RCVINFO:
2599                         set_opt = SCTP_PCB_FLAGS_EXT_RCVINFO;
2600                         break;
2601                 case SCTP_I_WANT_MAPPED_V4_ADDR:
2602                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2603                                 set_opt = SCTP_PCB_FLAGS_NEEDS_MAPPED_V4;
2604                         } else {
2605                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2606                                 return (EINVAL);
2607                         }
2608                         break;
2609                 case SCTP_NODELAY:
2610                         set_opt = SCTP_PCB_FLAGS_NODELAY;
2611                         break;
2612                 case SCTP_AUTOCLOSE:
2613                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2614                             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
2615                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2616                                 return (EINVAL);
2617                         }
2618                         set_opt = SCTP_PCB_FLAGS_AUTOCLOSE;
2619                         /*
2620                          * The value is in ticks. Note this does not effect
2621                          * old associations, only new ones.
2622                          */
2623                         inp->sctp_ep.auto_close_time = SEC_TO_TICKS(*mopt);
2624                         break;
2625                 }
2626                 SCTP_INP_WLOCK(inp);
2627                 if (*mopt != 0) {
2628                         sctp_feature_on(inp, set_opt);
2629                 } else {
2630                         sctp_feature_off(inp, set_opt);
2631                 }
2632                 SCTP_INP_WUNLOCK(inp);
2633                 break;
2634         case SCTP_PARTIAL_DELIVERY_POINT:
2635                 {
2636                         uint32_t *value;
2637
2638                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, optsize);
2639                         if (*value > SCTP_SB_LIMIT_RCV(so)) {
2640                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2641                                 error = EINVAL;
2642                                 break;
2643                         }
2644                         inp->partial_delivery_point = *value;
2645                 }
2646                 break;
2647         case SCTP_FRAGMENT_INTERLEAVE:
2648                 /* not yet until we re-write sctp_recvmsg() */
2649                 {
2650                         uint32_t *level;
2651
2652                         SCTP_CHECK_AND_CAST(level, optval, uint32_t, optsize);
2653                         if (*level == SCTP_FRAG_LEVEL_2) {
2654                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2655                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2656                         } else if (*level == SCTP_FRAG_LEVEL_1) {
2657                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2658                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2659                         } else if (*level == SCTP_FRAG_LEVEL_0) {
2660                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2661                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2662
2663                         } else {
2664                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2665                                 error = EINVAL;
2666                         }
2667                 }
2668                 break;
2669         case SCTP_CMT_ON_OFF:
2670                 {
2671                         struct sctp_assoc_value *av;
2672
2673                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2674                         if (sctp_cmt_on_off) {
2675                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2676                                 if (stcb) {
2677                                         stcb->asoc.sctp_cmt_on_off = (uint8_t) av->assoc_value;
2678                                         SCTP_TCB_UNLOCK(stcb);
2679                                 } else {
2680                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
2681                                         error = ENOTCONN;
2682                                 }
2683                         } else {
2684                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
2685                                 error = ENOPROTOOPT;
2686                         }
2687                 }
2688                 break;
2689                 /* JRS - Set socket option for pluggable congestion control */
2690         case SCTP_PLUGGABLE_CC:
2691                 {
2692                         struct sctp_assoc_value *av;
2693
2694                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2695                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2696                         if (stcb) {
2697                                 switch (av->assoc_value) {
2698                                         /*
2699                                          * JRS - Standard TCP congestion
2700                                          * control
2701                                          */
2702                                 case SCTP_CC_RFC2581:
2703                                         {
2704                                                 stcb->asoc.congestion_control_module = SCTP_CC_RFC2581;
2705                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_set_initial_cc_param;
2706                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_cwnd_update_after_sack;
2707                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_cwnd_update_after_fr;
2708                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_cwnd_update_after_timeout;
2709                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_cwnd_update_after_ecn_echo;
2710                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
2711                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
2712                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_cwnd_update_after_fr_timer;
2713                                                 SCTP_TCB_UNLOCK(stcb);
2714                                                 break;
2715                                         }
2716                                         /*
2717                                          * JRS - High Speed TCP congestion
2718                                          * control (Floyd)
2719                                          */
2720                                 case SCTP_CC_HSTCP:
2721                                         {
2722                                                 stcb->asoc.congestion_control_module = SCTP_CC_HSTCP;
2723                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_set_initial_cc_param;
2724                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_hs_cwnd_update_after_sack;
2725                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_hs_cwnd_update_after_fr;
2726                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_cwnd_update_after_timeout;
2727                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_cwnd_update_after_ecn_echo;
2728                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
2729                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
2730                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_cwnd_update_after_fr_timer;
2731                                                 SCTP_TCB_UNLOCK(stcb);
2732                                                 break;
2733                                         }
2734                                         /* JRS - HTCP congestion control */
2735                                 case SCTP_CC_HTCP:
2736                                         {
2737                                                 stcb->asoc.congestion_control_module = SCTP_CC_HTCP;
2738                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_htcp_set_initial_cc_param;
2739                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_htcp_cwnd_update_after_sack;
2740                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_htcp_cwnd_update_after_fr;
2741                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_htcp_cwnd_update_after_timeout;
2742                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_htcp_cwnd_update_after_ecn_echo;
2743                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
2744                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
2745                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_htcp_cwnd_update_after_fr_timer;
2746                                                 SCTP_TCB_UNLOCK(stcb);
2747                                                 break;
2748                                         }
2749                                         /*
2750                                          * JRS - All other values are
2751                                          * invalid
2752                                          */
2753                                 default:
2754                                         {
2755                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2756                                                 error = EINVAL;
2757                                                 SCTP_TCB_UNLOCK(stcb);
2758                                                 break;
2759                                         }
2760                                 }
2761                         } else {
2762                                 switch (av->assoc_value) {
2763                                 case SCTP_CC_RFC2581:
2764                                 case SCTP_CC_HSTCP:
2765                                 case SCTP_CC_HTCP:
2766                                         inp->sctp_ep.sctp_default_cc_module = av->assoc_value;
2767                                         break;
2768                                 default:
2769                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2770                                         error = EINVAL;
2771                                         break;
2772                                 };
2773                         }
2774                 }
2775                 break;
2776         case SCTP_CLR_STAT_LOG:
2777                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
2778                 error = EOPNOTSUPP;
2779                 break;
2780         case SCTP_CONTEXT:
2781                 {
2782                         struct sctp_assoc_value *av;
2783
2784                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2785                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2786
2787                         if (stcb) {
2788                                 stcb->asoc.context = av->assoc_value;
2789                                 SCTP_TCB_UNLOCK(stcb);
2790                         } else {
2791                                 SCTP_INP_WLOCK(inp);
2792                                 inp->sctp_context = av->assoc_value;
2793                                 SCTP_INP_WUNLOCK(inp);
2794                         }
2795                 }
2796                 break;
2797         case SCTP_VRF_ID:
2798                 {
2799                         uint32_t *default_vrfid;
2800
2801                         SCTP_CHECK_AND_CAST(default_vrfid, optval, uint32_t, optsize);
2802                         if (*default_vrfid > SCTP_MAX_VRF_ID) {
2803                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2804                                 error = EINVAL;
2805                                 break;
2806                         }
2807                         inp->def_vrf_id = *default_vrfid;
2808                         break;
2809                 }
2810         case SCTP_DEL_VRF_ID:
2811                 {
2812                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
2813                         error = EOPNOTSUPP;
2814                         break;
2815                 }
2816         case SCTP_ADD_VRF_ID:
2817                 {
2818                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
2819                         error = EOPNOTSUPP;
2820                         break;
2821                 }
2822         case SCTP_DELAYED_SACK:
2823                 {
2824                         struct sctp_sack_info *sack;
2825
2826                         SCTP_CHECK_AND_CAST(sack, optval, struct sctp_sack_info, optsize);
2827                         SCTP_FIND_STCB(inp, stcb, sack->sack_assoc_id);
2828                         if (sack->sack_delay) {
2829                                 if (sack->sack_delay > SCTP_MAX_SACK_DELAY)
2830                                         sack->sack_delay = SCTP_MAX_SACK_DELAY;
2831                         }
2832                         if (stcb) {
2833                                 if (sack->sack_delay) {
2834                                         if (MSEC_TO_TICKS(sack->sack_delay) < 1) {
2835                                                 sack->sack_delay = TICKS_TO_MSEC(1);
2836                                         }
2837                                         stcb->asoc.delayed_ack = sack->sack_delay;
2838                                 }
2839                                 if (sack->sack_freq) {
2840                                         stcb->asoc.sack_freq = sack->sack_freq;
2841                                 }
2842                                 SCTP_TCB_UNLOCK(stcb);
2843                         } else {
2844                                 SCTP_INP_WLOCK(inp);
2845                                 if (sack->sack_delay) {
2846                                         if (MSEC_TO_TICKS(sack->sack_delay) < 1) {
2847                                                 sack->sack_delay = TICKS_TO_MSEC(1);
2848                                         }
2849                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(sack->sack_delay);
2850                                 }
2851                                 if (sack->sack_freq) {
2852                                         inp->sctp_ep.sctp_sack_freq = sack->sack_freq;
2853                                 }
2854                                 SCTP_INP_WUNLOCK(inp);
2855                         }
2856                         break;
2857                 }
2858         case SCTP_AUTH_CHUNK:
2859                 {
2860                         struct sctp_authchunk *sauth;
2861
2862                         SCTP_CHECK_AND_CAST(sauth, optval, struct sctp_authchunk, optsize);
2863
2864                         SCTP_INP_WLOCK(inp);
2865                         if (sctp_auth_add_chunk(sauth->sauth_chunk, inp->sctp_ep.local_auth_chunks)) {
2866                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2867                                 error = EINVAL;
2868                         }
2869                         SCTP_INP_WUNLOCK(inp);
2870                         break;
2871                 }
2872         case SCTP_AUTH_KEY:
2873                 {
2874                         struct sctp_authkey *sca;
2875                         struct sctp_keyhead *shared_keys;
2876                         sctp_sharedkey_t *shared_key;
2877                         sctp_key_t *key = NULL;
2878                         size_t size;
2879
2880                         SCTP_CHECK_AND_CAST(sca, optval, struct sctp_authkey, optsize);
2881                         SCTP_FIND_STCB(inp, stcb, sca->sca_assoc_id);
2882                         size = optsize - sizeof(*sca);
2883
2884                         if (stcb) {
2885                                 /* set it on the assoc */
2886                                 shared_keys = &stcb->asoc.shared_keys;
2887                                 /* clear the cached keys for this key id */
2888                                 sctp_clear_cachedkeys(stcb, sca->sca_keynumber);
2889                                 /*
2890                                  * create the new shared key and
2891                                  * insert/replace it
2892                                  */
2893                                 if (size > 0) {
2894                                         key = sctp_set_key(sca->sca_key, (uint32_t) size);
2895                                         if (key == NULL) {
2896                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
2897                                                 error = ENOMEM;
2898                                                 SCTP_TCB_UNLOCK(stcb);
2899                                                 break;
2900                                         }
2901                                 }
2902                                 shared_key = sctp_alloc_sharedkey();
2903                                 if (shared_key == NULL) {
2904                                         sctp_free_key(key);
2905                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
2906                                         error = ENOMEM;
2907                                         SCTP_TCB_UNLOCK(stcb);
2908                                         break;
2909                                 }
2910                                 shared_key->key = key;
2911                                 shared_key->keyid = sca->sca_keynumber;
2912                                 sctp_insert_sharedkey(shared_keys, shared_key);
2913                                 SCTP_TCB_UNLOCK(stcb);
2914                         } else {
2915                                 /* set it on the endpoint */
2916                                 SCTP_INP_WLOCK(inp);
2917                                 shared_keys = &inp->sctp_ep.shared_keys;
2918                                 /*
2919                                  * clear the cached keys on all assocs for
2920                                  * this key id
2921                                  */
2922                                 sctp_clear_cachedkeys_ep(inp, sca->sca_keynumber);
2923                                 /*
2924                                  * create the new shared key and
2925                                  * insert/replace it
2926                                  */
2927                                 if (size > 0) {
2928                                         key = sctp_set_key(sca->sca_key, (uint32_t) size);
2929                                         if (key == NULL) {
2930                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
2931                                                 error = ENOMEM;
2932                                                 SCTP_INP_WUNLOCK(inp);
2933                                                 break;
2934                                         }
2935                                 }
2936                                 shared_key = sctp_alloc_sharedkey();
2937                                 if (shared_key == NULL) {
2938                                         sctp_free_key(key);
2939                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
2940                                         error = ENOMEM;
2941                                         SCTP_INP_WUNLOCK(inp);
2942                                         break;
2943                                 }
2944                                 shared_key->key = key;
2945                                 shared_key->keyid = sca->sca_keynumber;
2946                                 sctp_insert_sharedkey(shared_keys, shared_key);
2947                                 SCTP_INP_WUNLOCK(inp);
2948                         }
2949                         break;
2950                 }
2951         case SCTP_HMAC_IDENT:
2952                 {
2953                         struct sctp_hmacalgo *shmac;
2954                         sctp_hmaclist_t *hmaclist;
2955                         uint32_t hmacid;
2956                         size_t size, i, found;
2957
2958                         SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, optsize);
2959                         size = (optsize - sizeof(*shmac)) / sizeof(shmac->shmac_idents[0]);
2960                         hmaclist = sctp_alloc_hmaclist(size);
2961                         if (hmaclist == NULL) {
2962                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
2963                                 error = ENOMEM;
2964                                 break;
2965                         }
2966                         for (i = 0; i < size; i++) {
2967                                 hmacid = shmac->shmac_idents[i];
2968                                 if (sctp_auth_add_hmacid(hmaclist, (uint16_t) hmacid)) {
2969                                          /* invalid HMACs were found */ ;
2970                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2971                                         error = EINVAL;
2972                                         sctp_free_hmaclist(hmaclist);
2973                                         goto sctp_set_hmac_done;
2974                                 }
2975                         }
2976                         found = 0;
2977                         for (i = 0; i < hmaclist->num_algo; i++) {
2978                                 if (hmaclist->hmac[i] == SCTP_AUTH_HMAC_ID_SHA1) {
2979                                         /* already in list */
2980                                         found = 1;
2981                                 }
2982                         }
2983                         if (!found) {
2984                                 sctp_free_hmaclist(hmaclist);
2985                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2986                                 error = EINVAL;
2987                                 break;
2988                         }
2989                         /* set it on the endpoint */
2990                         SCTP_INP_WLOCK(inp);
2991                         if (inp->sctp_ep.local_hmacs)
2992                                 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
2993                         inp->sctp_ep.local_hmacs = hmaclist;
2994                         SCTP_INP_WUNLOCK(inp);
2995         sctp_set_hmac_done:
2996                         break;
2997                 }
2998         case SCTP_AUTH_ACTIVE_KEY:
2999                 {
3000                         struct sctp_authkeyid *scact;
3001
3002                         SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, optsize);
3003                         SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id);
3004
3005                         /* set the active key on the right place */
3006                         if (stcb) {
3007                                 /* set the active key on the assoc */
3008                                 if (sctp_auth_setactivekey(stcb, scact->scact_keynumber)) {
3009                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3010                                         error = EINVAL;
3011                                 }
3012                                 SCTP_TCB_UNLOCK(stcb);
3013                         } else {
3014                                 /* set the active key on the endpoint */
3015                                 SCTP_INP_WLOCK(inp);
3016                                 if (sctp_auth_setactivekey_ep(inp, scact->scact_keynumber)) {
3017                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3018                                         error = EINVAL;
3019                                 }
3020                                 SCTP_INP_WUNLOCK(inp);
3021                         }
3022                         break;
3023                 }
3024         case SCTP_AUTH_DELETE_KEY:
3025                 {
3026                         struct sctp_authkeyid *scdel;
3027
3028                         SCTP_CHECK_AND_CAST(scdel, optval, struct sctp_authkeyid, optsize);
3029                         SCTP_FIND_STCB(inp, stcb, scdel->scact_assoc_id);
3030
3031                         /* delete the key from the right place */
3032                         if (stcb) {
3033                                 if (sctp_delete_sharedkey(stcb, scdel->scact_keynumber)) {
3034                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3035                                         error = EINVAL;
3036                                 }
3037                                 SCTP_TCB_UNLOCK(stcb);
3038                         } else {
3039                                 SCTP_INP_WLOCK(inp);
3040                                 if (sctp_delete_sharedkey_ep(inp, scdel->scact_keynumber)) {
3041                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3042                                         error = EINVAL;
3043                                 }
3044                                 SCTP_INP_WUNLOCK(inp);
3045                         }
3046                         break;
3047                 }
3048
3049         case SCTP_RESET_STREAMS:
3050                 {
3051                         struct sctp_stream_reset *strrst;
3052                         uint8_t send_in = 0, send_tsn = 0, send_out = 0;
3053                         int i;
3054
3055                         SCTP_CHECK_AND_CAST(strrst, optval, struct sctp_stream_reset, optsize);
3056                         SCTP_FIND_STCB(inp, stcb, strrst->strrst_assoc_id);
3057
3058                         if (stcb == NULL) {
3059                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
3060                                 error = ENOENT;
3061                                 break;
3062                         }
3063                         if (stcb->asoc.peer_supports_strreset == 0) {
3064                                 /*
3065                                  * Peer does not support it, we return
3066                                  * protocol not supported since this is true
3067                                  * for this feature and this peer, not the
3068                                  * socket request in general.
3069                                  */
3070                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EPROTONOSUPPORT);
3071                                 error = EPROTONOSUPPORT;
3072                                 SCTP_TCB_UNLOCK(stcb);
3073                                 break;
3074                         }
3075                         if (stcb->asoc.stream_reset_outstanding) {
3076                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
3077                                 error = EALREADY;
3078                                 SCTP_TCB_UNLOCK(stcb);
3079                                 break;
3080                         }
3081                         if (strrst->strrst_flags == SCTP_RESET_LOCAL_RECV) {
3082                                 send_in = 1;
3083                         } else if (strrst->strrst_flags == SCTP_RESET_LOCAL_SEND) {
3084                                 send_out = 1;
3085                         } else if (strrst->strrst_flags == SCTP_RESET_BOTH) {
3086                                 send_in = 1;
3087                                 send_out = 1;
3088                         } else if (strrst->strrst_flags == SCTP_RESET_TSN) {
3089                                 send_tsn = 1;
3090                         } else {
3091                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3092                                 error = EINVAL;
3093                                 SCTP_TCB_UNLOCK(stcb);
3094                                 break;
3095                         }
3096                         for (i = 0; i < strrst->strrst_num_streams; i++) {
3097                                 if ((send_in) &&
3098
3099                                     (strrst->strrst_list[i] > stcb->asoc.streamincnt)) {
3100                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3101                                         error = EINVAL;
3102                                         goto get_out;
3103                                 }
3104                                 if ((send_out) &&
3105                                     (strrst->strrst_list[i] > stcb->asoc.streamoutcnt)) {
3106                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3107                                         error = EINVAL;
3108                                         goto get_out;
3109                                 }
3110                         }
3111                         if (error) {
3112                 get_out:
3113                                 SCTP_TCB_UNLOCK(stcb);
3114                                 break;
3115                         }
3116                         error = sctp_send_str_reset_req(stcb, strrst->strrst_num_streams,
3117                             strrst->strrst_list,
3118                             send_out, (stcb->asoc.str_reset_seq_in - 3),
3119                             send_in, send_tsn);
3120
3121                         sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_REQ, SCTP_SO_LOCKED);
3122                         SCTP_TCB_UNLOCK(stcb);
3123                 }
3124                 break;
3125
3126         case SCTP_CONNECT_X:
3127                 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) {
3128                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3129                         error = EINVAL;
3130                         break;
3131                 }
3132                 error = sctp_do_connect_x(so, inp, optval, optsize, p, 0);
3133                 break;
3134
3135         case SCTP_CONNECT_X_DELAYED:
3136                 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) {
3137                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3138                         error = EINVAL;
3139                         break;
3140                 }
3141                 error = sctp_do_connect_x(so, inp, optval, optsize, p, 1);
3142                 break;
3143
3144         case SCTP_CONNECT_X_COMPLETE:
3145                 {
3146                         struct sockaddr *sa;
3147                         struct sctp_nets *net;
3148
3149                         /* FIXME MT: check correct? */
3150                         SCTP_CHECK_AND_CAST(sa, optval, struct sockaddr, optsize);
3151
3152                         /* find tcb */
3153                         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
3154                                 SCTP_INP_RLOCK(inp);
3155                                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
3156                                 if (stcb) {
3157                                         SCTP_TCB_LOCK(stcb);
3158                                         net = sctp_findnet(stcb, sa);
3159                                 }
3160                                 SCTP_INP_RUNLOCK(inp);
3161                         } else {
3162                                 /*
3163                                  * We increment here since
3164                                  * sctp_findassociation_ep_addr() wil do a
3165                                  * decrement if it finds the stcb as long as
3166                                  * the locked tcb (last argument) is NOT a
3167                                  * TCB.. aka NULL.
3168                                  */
3169                                 SCTP_INP_INCR_REF(inp);
3170                                 stcb = sctp_findassociation_ep_addr(&inp, sa, &net, NULL, NULL);
3171                                 if (stcb == NULL) {
3172                                         SCTP_INP_DECR_REF(inp);
3173                                 }
3174                         }
3175
3176                         if (stcb == NULL) {
3177                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
3178                                 error = ENOENT;
3179                                 break;
3180                         }
3181                         if (stcb->asoc.delayed_connection == 1) {
3182                                 stcb->asoc.delayed_connection = 0;
3183                                 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
3184                                 sctp_timer_stop(SCTP_TIMER_TYPE_INIT, inp, stcb,
3185                                     stcb->asoc.primary_destination,
3186                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_9);
3187                                 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
3188                         } else {
3189                                 /*
3190                                  * already expired or did not use delayed
3191                                  * connectx
3192                                  */
3193                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
3194                                 error = EALREADY;
3195                         }
3196                         SCTP_TCB_UNLOCK(stcb);
3197                 }
3198                 break;
3199         case SCTP_MAX_BURST:
3200                 {
3201                         uint8_t *burst;
3202
3203                         SCTP_CHECK_AND_CAST(burst, optval, uint8_t, optsize);
3204
3205                         SCTP_INP_WLOCK(inp);
3206                         if (*burst) {
3207                                 inp->sctp_ep.max_burst = *burst;
3208                         }
3209                         SCTP_INP_WUNLOCK(inp);
3210                 }
3211                 break;
3212         case SCTP_MAXSEG:
3213                 {
3214                         struct sctp_assoc_value *av;
3215                         int ovh;
3216
3217                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
3218                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
3219
3220                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
3221                                 ovh = SCTP_MED_OVERHEAD;
3222                         } else {
3223                                 ovh = SCTP_MED_V4_OVERHEAD;
3224                         }
3225                         if (stcb) {
3226                                 if (av->assoc_value) {
3227                                         stcb->asoc.sctp_frag_point = (av->assoc_value + ovh);
3228                                 } else {
3229                                         stcb->asoc.sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
3230                                 }
3231                                 SCTP_TCB_UNLOCK(stcb);
3232                         } else {
3233                                 SCTP_INP_WLOCK(inp);
3234                                 /*
3235                                  * FIXME MT: I think this is not in tune
3236                                  * with the API ID
3237                                  */
3238                                 if (av->assoc_value) {
3239                                         inp->sctp_frag_point = (av->assoc_value + ovh);
3240                                 } else {
3241                                         inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
3242                                 }
3243                                 SCTP_INP_WUNLOCK(inp);
3244                         }
3245                 }
3246                 break;
3247         case SCTP_EVENTS:
3248                 {
3249                         struct sctp_event_subscribe *events;
3250
3251                         SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, optsize);
3252
3253                         SCTP_INP_WLOCK(inp);
3254                         if (events->sctp_data_io_event) {
3255                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
3256                         } else {
3257                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
3258                         }
3259
3260                         if (events->sctp_association_event) {
3261                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
3262                         } else {
3263                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
3264                         }
3265
3266                         if (events->sctp_address_event) {
3267                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
3268                         } else {
3269                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
3270                         }
3271
3272                         if (events->sctp_send_failure_event) {
3273                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
3274                         } else {
3275                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
3276                         }
3277
3278                         if (events->sctp_peer_error_event) {
3279                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR);
3280                         } else {
3281                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPEERERR);
3282                         }
3283
3284                         if (events->sctp_shutdown_event) {
3285                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
3286                         } else {
3287                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
3288                         }
3289
3290                         if (events->sctp_partial_delivery_event) {
3291                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
3292                         } else {
3293                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
3294                         }
3295
3296                         if (events->sctp_adaptation_layer_event) {
3297                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
3298                         } else {
3299                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
3300                         }
3301
3302                         if (events->sctp_authentication_event) {
3303                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT);
3304                         } else {
3305                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTHEVNT);
3306                         }
3307
3308                         if (events->sctp_stream_reset_events) {
3309                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
3310                         } else {
3311                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
3312                         }
3313                         SCTP_INP_WUNLOCK(inp);
3314                 }
3315                 break;
3316
3317         case SCTP_ADAPTATION_LAYER:
3318                 {
3319                         struct sctp_setadaptation *adap_bits;
3320
3321                         SCTP_CHECK_AND_CAST(adap_bits, optval, struct sctp_setadaptation, optsize);
3322                         SCTP_INP_WLOCK(inp);
3323                         inp->sctp_ep.adaptation_layer_indicator = adap_bits->ssb_adaptation_ind;
3324                         SCTP_INP_WUNLOCK(inp);
3325                 }
3326                 break;
3327 #ifdef SCTP_DEBUG
3328         case SCTP_SET_INITIAL_DBG_SEQ:
3329                 {
3330                         uint32_t *vvv;
3331
3332                         SCTP_CHECK_AND_CAST(vvv, optval, uint32_t, optsize);
3333                         SCTP_INP_WLOCK(inp);
3334                         inp->sctp_ep.initial_sequence_debug = *vvv;
3335                         SCTP_INP_WUNLOCK(inp);
3336                 }
3337                 break;
3338 #endif
3339         case SCTP_DEFAULT_SEND_PARAM:
3340                 {
3341                         struct sctp_sndrcvinfo *s_info;
3342
3343                         SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, optsize);
3344                         SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id);
3345
3346                         if (stcb) {
3347                                 if (s_info->sinfo_stream <= stcb->asoc.streamoutcnt) {
3348                                         memcpy(&stcb->asoc.def_send, s_info, min(optsize, sizeof(stcb->asoc.def_send)));
3349                                 } else {
3350                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3351                                         error = EINVAL;
3352                                 }
3353                                 SCTP_TCB_UNLOCK(stcb);
3354                         } else {
3355                                 SCTP_INP_WLOCK(inp);
3356                                 memcpy(&inp->def_send, s_info, min(optsize, sizeof(inp->def_send)));
3357                                 SCTP_INP_WUNLOCK(inp);
3358                         }
3359                 }
3360                 break;
3361         case SCTP_PEER_ADDR_PARAMS:
3362                 /* Applys to the specific association */
3363                 {
3364                         struct sctp_paddrparams *paddrp;
3365                         struct sctp_nets *net;
3366
3367                         SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, optsize);
3368                         SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id);
3369                         net = NULL;
3370                         if (stcb) {
3371                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address);
3372                         } else {
3373                                 /*
3374                                  * We increment here since
3375                                  * sctp_findassociation_ep_addr() wil do a
3376                                  * decrement if it finds the stcb as long as
3377                                  * the locked tcb (last argument) is NOT a
3378                                  * TCB.. aka NULL.
3379                                  */
3380                                 SCTP_INP_INCR_REF(inp);
3381                                 stcb = sctp_findassociation_ep_addr(&inp,
3382                                     (struct sockaddr *)&paddrp->spp_address,
3383                                     &net, NULL, NULL);
3384                                 if (stcb == NULL) {
3385                                         SCTP_INP_DECR_REF(inp);
3386                                 }
3387                         }
3388                         if (stcb && (net == NULL)) {
3389                                 struct sockaddr *sa;
3390
3391                                 sa = (struct sockaddr *)&paddrp->spp_address;
3392                                 if (sa->sa_family == AF_INET) {
3393                                         struct sockaddr_in *sin;
3394
3395                                         sin = (struct sockaddr_in *)sa;
3396                                         if (sin->sin_addr.s_addr) {
3397                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3398                                                 SCTP_TCB_UNLOCK(stcb);
3399                                                 error = EINVAL;
3400                                                 break;
3401                                         }
3402                                 } else if (sa->sa_family == AF_INET6) {
3403                                         struct sockaddr_in6 *sin6;
3404
3405                                         sin6 = (struct sockaddr_in6 *)sa;
3406                                         if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3407                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3408                                                 SCTP_TCB_UNLOCK(stcb);
3409                                                 error = EINVAL;
3410                                                 break;
3411                                         }
3412                                 } else {
3413                                         error = EAFNOSUPPORT;
3414                                         SCTP_TCB_UNLOCK(stcb);
3415                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
3416                                         break;
3417                                 }
3418                         }
3419                         /* sanity checks */
3420                         if ((paddrp->spp_flags & SPP_HB_ENABLE) && (paddrp->spp_flags & SPP_HB_DISABLE)) {
3421                                 if (stcb)
3422                                         SCTP_TCB_UNLOCK(stcb);
3423                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3424                                 return (EINVAL);
3425                         }
3426                         if ((paddrp->spp_flags & SPP_PMTUD_ENABLE) && (paddrp->spp_flags & SPP_PMTUD_DISABLE)) {
3427                                 if (stcb)
3428                                         SCTP_TCB_UNLOCK(stcb);
3429                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3430                                 return (EINVAL);
3431                         }
3432                         if (stcb) {
3433                                 /************************TCB SPECIFIC SET ******************/
3434                                 /*
3435                                  * do we change the timer for HB, we run
3436                                  * only one?
3437                                  */
3438                                 int ovh = 0;
3439
3440                                 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
3441                                         ovh = SCTP_MED_OVERHEAD;
3442                                 } else {
3443                                         ovh = SCTP_MED_V4_OVERHEAD;
3444                                 }
3445
3446                                 if (paddrp->spp_hbinterval)
3447                                         stcb->asoc.heart_beat_delay = paddrp->spp_hbinterval;
3448                                 else if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO)
3449                                         stcb->asoc.heart_beat_delay = 0;
3450
3451                                 /* network sets ? */
3452                                 if (net) {
3453                                         /************************NET SPECIFIC SET ******************/
3454                                         if (paddrp->spp_flags & SPP_HB_DEMAND) {
3455                                                 /* on demand HB */
3456                                                 if (sctp_send_hb(stcb, 1, net) < 0) {
3457                                                         /* asoc destroyed */
3458                                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3459                                                         error = EINVAL;
3460                                                         break;
3461                                                 }
3462                                         }
3463                                         if (paddrp->spp_flags & SPP_HB_DISABLE) {
3464                                                 net->dest_state |= SCTP_ADDR_NOHB;
3465                                         }
3466                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3467                                                 net->dest_state &= ~SCTP_ADDR_NOHB;
3468                                         }
3469                                         if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && (paddrp->spp_pathmtu >= SCTP_SMALLEST_PMTU)) {
3470                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3471                                                         sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
3472                                                             SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10);
3473                                                 }
3474                                                 if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) {
3475                                                         net->mtu = paddrp->spp_pathmtu + ovh;
3476                                                         if (net->mtu < stcb->asoc.smallest_mtu) {
3477 #ifdef SCTP_PRINT_FOR_B_AND_M
3478                                                                 SCTP_PRINTF("SCTP_PMTU_DISABLE calls sctp_pathmtu_adjustment:%d\n",
3479                                                                     net->mtu);
3480 #endif
3481                                                                 sctp_pathmtu_adjustment(inp, stcb, net, net->mtu);
3482                                                         }
3483                                                 }
3484                                         }
3485                                         if (paddrp->spp_flags & SPP_PMTUD_ENABLE) {
3486                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3487                                                         sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
3488                                                 }
3489                                         }
3490                                         if (paddrp->spp_pathmaxrxt)
3491                                                 net->failure_threshold = paddrp->spp_pathmaxrxt;
3492 #ifdef INET
3493                                         if (paddrp->spp_flags & SPP_IPV4_TOS) {
3494                                                 if (net->ro._l_addr.sin.sin_family == AF_INET) {
3495                                                         net->tos_flowlabel = paddrp->spp_ipv4_tos & 0x000000fc;
3496                                                 }
3497                                         }
3498 #endif
3499 #ifdef INET6
3500                                         if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL) {
3501                                                 if (net->ro._l_addr.sin6.sin6_family == AF_INET6) {
3502                                                         net->tos_flowlabel = paddrp->spp_ipv6_flowlabel;
3503                                                 }
3504                                         }
3505 #endif
3506                                 } else {
3507                                         /************************ASSOC ONLY -- NO NET SPECIFIC SET ******************/
3508                                         if (paddrp->spp_pathmaxrxt)
3509                                                 stcb->asoc.def_net_failure = paddrp->spp_pathmaxrxt;
3510
3511                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3512                                                 /* Turn back on the timer */
3513                                                 stcb->asoc.hb_is_disabled = 0;
3514                                                 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
3515                                         }
3516                                         if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && (paddrp->spp_pathmtu >= SCTP_SMALLEST_PMTU)) {
3517                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3518                                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3519                                                                 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
3520                                                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10);
3521                                                         }
3522                                                         if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) {
3523                                                                 net->mtu = paddrp->spp_pathmtu + ovh;
3524                                                                 if (net->mtu < stcb->asoc.smallest_mtu) {
3525 #ifdef SCTP_PRINT_FOR_B_AND_M
3526                                                                         SCTP_PRINTF("SCTP_PMTU_DISABLE calls sctp_pathmtu_adjustment:%d\n",
3527                                                                             net->mtu);
3528 #endif
3529                                                                         sctp_pathmtu_adjustment(inp, stcb, net, net->mtu);
3530                                                                 }
3531                                                         }
3532                                                 }
3533                                         }
3534                                         if (paddrp->spp_flags & SPP_PMTUD_ENABLE) {
3535                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3536                                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3537                                                                 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
3538                                                         }
3539                                                 }
3540                                         }
3541                                         if (paddrp->spp_flags & SPP_HB_DISABLE) {
3542                                                 int cnt_of_unconf = 0;
3543                                                 struct sctp_nets *lnet;
3544
3545                                                 stcb->asoc.hb_is_disabled = 1;
3546                                                 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
3547                                                         if (lnet->dest_state & SCTP_ADDR_UNCONFIRMED) {
3548                                                                 cnt_of_unconf++;
3549                                                         }
3550                                                 }
3551                                                 /*
3552                                                  * stop the timer ONLY if we
3553                                                  * have no unconfirmed
3554                                                  * addresses
3555                                                  */
3556                                                 if (cnt_of_unconf == 0) {
3557                                                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3558                                                                 sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net,
3559                                                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_11);
3560                                                         }
3561                                                 }
3562                                         }
3563                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3564                                                 /* start up the timer. */
3565                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3566                                                         sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
3567                                                 }
3568                                         }
3569 #ifdef INET
3570                                         if (paddrp->spp_flags & SPP_IPV4_TOS)
3571                                                 stcb->asoc.default_tos = paddrp->spp_ipv4_tos & 0x000000fc;
3572 #endif
3573 #ifdef INET6
3574                                         if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL)
3575                                                 stcb->asoc.default_flowlabel = paddrp->spp_ipv6_flowlabel;
3576 #endif
3577
3578                                 }
3579                                 SCTP_TCB_UNLOCK(stcb);
3580                         } else {
3581                                 /************************NO TCB, SET TO default stuff ******************/
3582                                 SCTP_INP_WLOCK(inp);
3583                                 /*
3584                                  * For the TOS/FLOWLABEL stuff you set it
3585                                  * with the options on the socket
3586                                  */
3587                                 if (paddrp->spp_pathmaxrxt) {
3588                                         inp->sctp_ep.def_net_failure = paddrp->spp_pathmaxrxt;
3589                                 }
3590                                 if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO)
3591                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = 0;
3592                                 else if (paddrp->spp_hbinterval) {
3593                                         if (paddrp->spp_hbinterval > SCTP_MAX_HB_INTERVAL)
3594                                                 paddrp->spp_hbinterval = SCTP_MAX_HB_INTERVAL;
3595                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(paddrp->spp_hbinterval);
3596                                 }
3597                                 if (paddrp->spp_flags & SPP_HB_ENABLE) {
3598                                         sctp_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
3599
3600                                 } else if (paddrp->spp_flags & SPP_HB_DISABLE) {
3601                                         sctp_feature_on(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
3602                                 }
3603                                 SCTP_INP_WUNLOCK(inp);
3604                         }
3605                 }
3606                 break;
3607         case SCTP_RTOINFO:
3608                 {
3609                         struct sctp_rtoinfo *srto;
3610                         uint32_t new_init, new_min, new_max;
3611
3612                         SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, optsize);
3613                         SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id);
3614
3615                         if (stcb) {
3616                                 if (srto->srto_initial)
3617                                         new_init = srto->srto_initial;
3618                                 else
3619                                         new_init = stcb->asoc.initial_rto;
3620                                 if (srto->srto_max)
3621                                         new_max = srto->srto_max;
3622                                 else
3623                                         new_max = stcb->asoc.maxrto;
3624                                 if (srto->srto_min)
3625                                         new_min = srto->srto_min;
3626                                 else
3627                                         new_min = stcb->asoc.minrto;
3628                                 if ((new_min <= new_init) && (new_init <= new_max)) {
3629                                         stcb->asoc.initial_rto = new_init;
3630                                         stcb->asoc.maxrto = new_max;
3631                                         stcb->asoc.minrto = new_min;
3632                                 } else {
3633                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EDOM);
3634                                         error = EDOM;
3635                                 }
3636                                 SCTP_TCB_UNLOCK(stcb);
3637                         } else {
3638                                 SCTP_INP_WLOCK(inp);
3639                                 if (srto->srto_initial)
3640                                         new_init = srto->srto_initial;
3641                                 else
3642                                         new_init = inp->sctp_ep.initial_rto;
3643                                 if (srto->srto_max)
3644                                         new_max = srto->srto_max;
3645                                 else
3646                                         new_max = inp->sctp_ep.sctp_maxrto;
3647                                 if (srto->srto_min)
3648                                         new_min = srto->srto_min;
3649                                 else
3650                                         new_min = inp->sctp_ep.sctp_minrto;
3651                                 if ((new_min <= new_init) && (new_init <= new_max)) {
3652                                         inp->sctp_ep.initial_rto = new_init;
3653                                         inp->sctp_ep.sctp_maxrto = new_max;
3654                                         inp->sctp_ep.sctp_minrto = new_min;
3655                                 } else {
3656                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EDOM);
3657                                         error = EDOM;
3658                                 }
3659                                 SCTP_INP_WUNLOCK(inp);
3660                         }
3661                 }
3662                 break;
3663         case SCTP_ASSOCINFO:
3664                 {
3665                         struct sctp_assocparams *sasoc;
3666
3667                         SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, optsize);
3668                         SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id);
3669                         if (sasoc->sasoc_cookie_life) {
3670                                 /* boundary check the cookie life */
3671                                 if (sasoc->sasoc_cookie_life < 1000)
3672                                         sasoc->sasoc_cookie_life = 1000;
3673                                 if (sasoc->sasoc_cookie_life > SCTP_MAX_COOKIE_LIFE) {
3674                                         sasoc->sasoc_cookie_life = SCTP_MAX_COOKIE_LIFE;
3675                                 }
3676                         }
3677                         if (stcb) {
3678                                 if (sasoc->sasoc_asocmaxrxt)
3679                                         stcb->asoc.max_send_times = sasoc->sasoc_asocmaxrxt;
3680                                 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets;
3681                                 sasoc->sasoc_peer_rwnd = 0;
3682                                 sasoc->sasoc_local_rwnd = 0;
3683                                 if (sasoc->sasoc_cookie_life) {
3684                                         stcb->asoc.cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life);
3685                                 }
3686                                 SCTP_TCB_UNLOCK(stcb);
3687                         } else {
3688                                 SCTP_INP_WLOCK(inp);
3689                                 if (sasoc->sasoc_asocmaxrxt)
3690                                         inp->sctp_ep.max_send_times = sasoc->sasoc_asocmaxrxt;
3691                                 sasoc->sasoc_number_peer_destinations = 0;
3692                                 sasoc->sasoc_peer_rwnd = 0;
3693                                 sasoc->sasoc_local_rwnd = 0;
3694                                 if (sasoc->sasoc_cookie_life) {
3695                                         inp->sctp_ep.def_cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life);
3696                                 }
3697                                 SCTP_INP_WUNLOCK(inp);
3698                         }
3699                 }
3700                 break;
3701         case SCTP_INITMSG:
3702                 {
3703                         struct sctp_initmsg *sinit;
3704
3705                         SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, optsize);
3706                         SCTP_INP_WLOCK(inp);
3707                         if (sinit->sinit_num_ostreams)
3708                                 inp->sctp_ep.pre_open_stream_count = sinit->sinit_num_ostreams;
3709
3710                         if (sinit->sinit_max_instreams)
3711                                 inp->sctp_ep.max_open_streams_intome = sinit->sinit_max_instreams;
3712
3713                         if (sinit->sinit_max_attempts)
3714                                 inp->sctp_ep.max_init_times = sinit->sinit_max_attempts;
3715
3716                         if (sinit->sinit_max_init_timeo)
3717                                 inp->sctp_ep.initial_init_rto_max = sinit->sinit_max_init_timeo;
3718                         SCTP_INP_WUNLOCK(inp);
3719                 }
3720                 break;
3721         case SCTP_PRIMARY_ADDR:
3722                 {
3723                         struct sctp_setprim *spa;
3724                         struct sctp_nets *net, *lnet;
3725
3726                         SCTP_CHECK_AND_CAST(spa, optval, struct sctp_setprim, optsize);
3727                         SCTP_FIND_STCB(inp, stcb, spa->ssp_assoc_id);
3728
3729                         net = NULL;
3730                         if (stcb) {
3731                                 net = sctp_findnet(stcb, (struct sockaddr *)&spa->ssp_addr);
3732                         } else {
3733                                 /*
3734                                  * We increment here since
3735                                  * sctp_findassociation_ep_addr() wil do a
3736                                  * decrement if it finds the stcb as long as
3737                                  * the locked tcb (last argument) is NOT a
3738                                  * TCB.. aka NULL.
3739                                  */
3740                                 SCTP_INP_INCR_REF(inp);
3741                                 stcb = sctp_findassociation_ep_addr(&inp,
3742                                     (struct sockaddr *)&spa->ssp_addr,
3743                                     &net, NULL, NULL);
3744                                 if (stcb == NULL) {
3745                                         SCTP_INP_DECR_REF(inp);
3746                                 }
3747                         }
3748
3749                         if ((stcb) && (net)) {
3750                                 if ((net != stcb->asoc.primary_destination) &&
3751                                     (!(net->dest_state & SCTP_ADDR_UNCONFIRMED))) {
3752                                         /* Ok we need to set it */
3753                                         lnet = stcb->asoc.primary_destination;
3754                                         if (sctp_set_primary_addr(stcb, (struct sockaddr *)NULL, net) == 0) {
3755                                                 if (net->dest_state & SCTP_ADDR_SWITCH_PRIMARY) {
3756                                                         net->dest_state |= SCTP_ADDR_DOUBLE_SWITCH;
3757                                                 }
3758                                                 net->dest_state |= SCTP_ADDR_SWITCH_PRIMARY;
3759                                         }
3760                                 }
3761                         } else {
3762                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3763                                 error = EINVAL;
3764                         }
3765                         if (stcb) {
3766                                 SCTP_TCB_UNLOCK(stcb);
3767                         }
3768                 }
3769                 break;
3770         case SCTP_SET_DYNAMIC_PRIMARY:
3771                 {
3772                         union sctp_sockstore *ss;
3773
3774                         error = priv_check(curthread,
3775                             PRIV_NETINET_RESERVEDPORT);
3776                         if (error)
3777                                 break;
3778
3779                         SCTP_CHECK_AND_CAST(ss, optval, union sctp_sockstore, optsize);
3780                         /* SUPER USER CHECK? */
3781                         error = sctp_dynamic_set_primary(&ss->sa, vrf_id);
3782                 }
3783                 break;
3784         case SCTP_SET_PEER_PRIMARY_ADDR:
3785                 {
3786                         struct sctp_setpeerprim *sspp;
3787
3788                         SCTP_CHECK_AND_CAST(sspp, optval, struct sctp_setpeerprim, optsize);
3789                         SCTP_FIND_STCB(inp, stcb, sspp->sspp_assoc_id);
3790                         if (stcb != NULL) {
3791                                 struct sctp_ifa *ifa;
3792
3793                                 ifa = sctp_find_ifa_by_addr((struct sockaddr *)&sspp->sspp_addr,
3794                                     stcb->asoc.vrf_id, SCTP_ADDR_NOT_LOCKED);
3795                                 if (ifa == NULL) {
3796                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3797                                         error = EINVAL;
3798                                         goto out_of_it;
3799                                 }
3800                                 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
3801                                         /*
3802                                          * Must validate the ifa found is in
3803                                          * our ep
3804                                          */
3805                                         struct sctp_laddr *laddr;
3806                                         int found = 0;
3807
3808                                         LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
3809                                                 if (laddr->ifa == NULL) {
3810                                                         SCTPDBG(SCTP_DEBUG_OUTPUT1, "%s: NULL ifa\n",
3811                                                             __FUNCTION__);
3812                                                         continue;
3813                                                 }
3814                                                 if (laddr->ifa == ifa) {
3815                                                         found = 1;
3816                                                         break;
3817                                                 }
3818                                         }
3819                                         if (!found) {
3820                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3821                                                 error = EINVAL;
3822                                                 goto out_of_it;
3823                                         }
3824                                 }
3825                                 if (sctp_set_primary_ip_address_sa(stcb,
3826                                     (struct sockaddr *)&sspp->sspp_addr) != 0) {
3827                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3828                                         error = EINVAL;
3829                                 }
3830                 out_of_it:
3831                                 SCTP_TCB_UNLOCK(stcb);
3832                         } else {
3833                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3834                                 error = EINVAL;
3835                         }
3836
3837                 }
3838                 break;
3839         case SCTP_BINDX_ADD_ADDR:
3840                 {
3841                         struct sctp_getaddresses *addrs;
3842                         size_t sz;
3843                         struct thread *td;
3844                         int prison = 0;
3845
3846                         td = (struct thread *)p;
3847                         if (jailed(td->td_ucred)) {
3848                                 prison = 1;
3849                         }
3850                         SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses,
3851                             optsize);
3852                         if (addrs->addr->sa_family == AF_INET) {
3853                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in);
3854                                 if (optsize < sz) {
3855                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3856                                         error = EINVAL;
3857                                         break;
3858                                 }
3859                                 if (prison && prison_ip(td->td_ucred, 0, &(((struct sockaddr_in *)(addrs->addr))->sin_addr.s_addr))) {
3860                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRNOTAVAIL);
3861                                         error = EADDRNOTAVAIL;
3862                                 }
3863                         } else if (addrs->addr->sa_family == AF_INET6) {
3864                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in6);
3865                                 if (optsize < sz) {
3866                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3867                                         error = EINVAL;
3868                                         break;
3869                                 }
3870                                 /* JAIL XXXX Add else here for V6 */
3871                         }
3872                         sctp_bindx_add_address(so, inp, addrs->addr,
3873                             addrs->sget_assoc_id, vrf_id,
3874                             &error, p);
3875                 }
3876                 break;
3877         case SCTP_BINDX_REM_ADDR:
3878                 {
3879                         struct sctp_getaddresses *addrs;
3880                         size_t sz;
3881                         struct thread *td;
3882                         int prison = 0;
3883
3884                         td = (struct thread *)p;
3885                         if (jailed(td->td_ucred)) {
3886                                 prison = 1;
3887                         }
3888                         SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses, optsize);
3889                         if (addrs->addr->sa_family == AF_INET) {
3890                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in);
3891                                 if (optsize < sz) {
3892                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3893                                         error = EINVAL;
3894                                         break;
3895                                 }
3896                                 if (prison && prison_ip(td->td_ucred, 0, &(((struct sockaddr_in *)(addrs->addr))->sin_addr.s_addr))) {
3897                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRNOTAVAIL);
3898                                         error = EADDRNOTAVAIL;
3899                                 }
3900                         } else if (addrs->addr->sa_family == AF_INET6) {
3901                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in6);
3902                                 if (optsize < sz) {
3903                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3904                                         error = EINVAL;
3905                                         break;
3906                                 }
3907                                 /* JAIL XXXX Add else here for V6 */
3908                         }
3909                         sctp_bindx_delete_address(so, inp, addrs->addr,
3910                             addrs->sget_assoc_id, vrf_id,
3911                             &error);
3912                 }
3913                 break;
3914         default:
3915                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
3916                 error = ENOPROTOOPT;
3917                 break;
3918         }                       /* end switch (opt) */
3919         return (error);
3920 }
3921
3922
3923 int
3924 sctp_ctloutput(struct socket *so, struct sockopt *sopt)
3925 {
3926         void *optval = NULL;
3927         size_t optsize = 0;
3928         struct sctp_inpcb *inp;
3929         void *p;
3930         int error = 0;
3931
3932         inp = (struct sctp_inpcb *)so->so_pcb;
3933         if (inp == 0) {
3934                 /* I made the same as TCP since we are not setup? */
3935                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3936                 return (ECONNRESET);
3937         }
3938         if (sopt->sopt_level != IPPROTO_SCTP) {
3939                 /* wrong proto level... send back up to IP */
3940 #ifdef INET6
3941                 if (INP_CHECK_SOCKAF(so, AF_INET6))
3942                         error = ip6_ctloutput(so, sopt);
3943                 else
3944 #endif                          /* INET6 */
3945                         error = ip_ctloutput(so, sopt);
3946                 return (error);
3947         }
3948         optsize = sopt->sopt_valsize;
3949         if (optsize) {
3950                 SCTP_MALLOC(optval, void *, optsize, SCTP_M_SOCKOPT);
3951                 if (optval == NULL) {
3952                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOBUFS);
3953                         return (ENOBUFS);
3954                 }
3955                 error = sooptcopyin(sopt, optval, optsize, optsize);
3956                 if (error) {
3957                         SCTP_FREE(optval, SCTP_M_SOCKOPT);
3958                         goto out;
3959                 }
3960         }
3961         p = (void *)sopt->sopt_td;
3962         if (sopt->sopt_dir == SOPT_SET) {
3963                 error = sctp_setopt(so, sopt->sopt_name, optval, optsize, p);
3964         } else if (sopt->sopt_dir == SOPT_GET) {
3965                 error = sctp_getopt(so, sopt->sopt_name, optval, &optsize, p);
3966         } else {
3967                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3968                 error = EINVAL;
3969         }
3970         if ((error == 0) && (optval != NULL)) {
3971                 error = sooptcopyout(sopt, optval, optsize);
3972                 SCTP_FREE(optval, SCTP_M_SOCKOPT);
3973         } else if (optval != NULL) {
3974                 SCTP_FREE(optval, SCTP_M_SOCKOPT);
3975         }
3976 out:
3977         return (error);
3978 }
3979
3980
3981 static int
3982 sctp_connect(struct socket *so, struct sockaddr *addr, struct thread *p)
3983 {
3984         int error = 0;
3985         int create_lock_on = 0;
3986         uint32_t vrf_id;
3987         struct sctp_inpcb *inp;
3988         struct sctp_tcb *stcb = NULL;
3989
3990         inp = (struct sctp_inpcb *)so->so_pcb;
3991         if (inp == 0) {
3992                 /* I made the same as TCP since we are not setup? */
3993                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3994                 return (ECONNRESET);
3995         }
3996         if (addr == NULL) {
3997                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3998                 return EINVAL;
3999         }
4000         if ((addr->sa_family == AF_INET6) && (addr->sa_len != sizeof(struct sockaddr_in6))) {
4001                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4002                 return (EINVAL);
4003         }
4004         if ((addr->sa_family == AF_INET) && (addr->sa_len != sizeof(struct sockaddr_in))) {
4005                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4006                 return (EINVAL);
4007         }
4008         SCTP_ASOC_CREATE_LOCK(inp);
4009         create_lock_on = 1;
4010
4011         SCTP_INP_INCR_REF(inp);
4012         if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4013             (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4014                 /* Should I really unlock ? */
4015                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EFAULT);
4016                 error = EFAULT;
4017                 goto out_now;
4018         }
4019 #ifdef INET6
4020         if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) &&
4021             (addr->sa_family == AF_INET6)) {
4022                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4023                 error = EINVAL;
4024                 goto out_now;
4025         }
4026 #endif                          /* INET6 */
4027         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
4028             SCTP_PCB_FLAGS_UNBOUND) {
4029                 /* Bind a ephemeral port */
4030                 error = sctp_inpcb_bind(so, NULL, NULL, p);
4031                 if (error) {
4032                         goto out_now;
4033                 }
4034         }
4035         /* Now do we connect? */
4036         if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
4037                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4038                 error = EINVAL;
4039                 goto out_now;
4040         }
4041         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
4042             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
4043                 /* We are already connected AND the TCP model */
4044                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
4045                 error = EADDRINUSE;
4046                 goto out_now;
4047         }
4048         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4049                 SCTP_INP_RLOCK(inp);
4050                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
4051                 SCTP_INP_RUNLOCK(inp);
4052         } else {
4053                 /*
4054                  * We increment here since sctp_findassociation_ep_addr()
4055                  * wil do a decrement if it finds the stcb as long as the
4056                  * locked tcb (last argument) is NOT a TCB.. aka NULL.
4057                  */
4058                 SCTP_INP_INCR_REF(inp);
4059                 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL);
4060                 if (stcb == NULL) {
4061                         SCTP_INP_DECR_REF(inp);
4062                 } else {
4063                         SCTP_TCB_LOCK(stcb);
4064                 }
4065         }
4066         if (stcb != NULL) {
4067                 /* Already have or am bring up an association */
4068                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
4069                 error = EALREADY;
4070                 goto out_now;
4071         }
4072         vrf_id = inp->def_vrf_id;
4073         /* We are GOOD to go */
4074         stcb = sctp_aloc_assoc(inp, addr, 1, &error, 0, vrf_id, p);
4075         if (stcb == NULL) {
4076                 /* Gak! no memory */
4077                 goto out_now;
4078         }
4079         if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
4080                 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
4081                 /* Set the connected flag so we can queue data */
4082                 soisconnecting(so);
4083         }
4084         SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_COOKIE_WAIT);
4085         (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
4086
4087         /* initialize authentication parameters for the assoc */
4088         sctp_initialize_auth_params(inp, stcb);
4089
4090         sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
4091         SCTP_TCB_UNLOCK(stcb);
4092 out_now:
4093         if (create_lock_on) {
4094                 SCTP_ASOC_CREATE_UNLOCK(inp);
4095         }
4096         SCTP_INP_DECR_REF(inp);
4097         return error;
4098 }
4099
4100 int
4101 sctp_listen(struct socket *so, int backlog, struct thread *p)
4102 {
4103         /*
4104          * Note this module depends on the protocol processing being called
4105          * AFTER any socket level flags and backlog are applied to the
4106          * socket. The traditional way that the socket flags are applied is
4107          * AFTER protocol processing. We have made a change to the
4108          * sys/kern/uipc_socket.c module to reverse this but this MUST be in
4109          * place if the socket API for SCTP is to work properly.
4110          */
4111
4112         int error = 0;
4113         struct sctp_inpcb *inp;
4114
4115         inp = (struct sctp_inpcb *)so->so_pcb;
4116         if (inp == 0) {
4117                 /* I made the same as TCP since we are not setup? */
4118                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4119                 return (ECONNRESET);
4120         }
4121         SCTP_INP_RLOCK(inp);
4122 #ifdef SCTP_LOCK_LOGGING
4123         if (sctp_logging_level & SCTP_LOCK_LOGGING_ENABLE) {
4124                 sctp_log_lock(inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_SOCK);
4125         }
4126 #endif
4127         SOCK_LOCK(so);
4128         error = solisten_proto_check(so);
4129         if (error) {
4130                 SOCK_UNLOCK(so);
4131                 SCTP_INP_RUNLOCK(inp);
4132                 return (error);
4133         }
4134         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
4135             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
4136                 /* We are already connected AND the TCP model */
4137                 SCTP_INP_RUNLOCK(inp);
4138                 SOCK_UNLOCK(so);
4139                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
4140                 return (EADDRINUSE);
4141         }
4142         if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4143                 /* We must do a bind. */
4144                 SOCK_UNLOCK(so);
4145                 SCTP_INP_RUNLOCK(inp);
4146                 if ((error = sctp_inpcb_bind(so, NULL, NULL, p))) {
4147                         /* bind error, probably perm */
4148                         return (error);
4149                 }
4150                 SOCK_LOCK(so);
4151         } else {
4152                 SCTP_INP_RUNLOCK(inp);
4153         }
4154         /* It appears for 7.0 and on, we must always call this. */
4155         solisten_proto(so, backlog);
4156         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
4157                 /* remove the ACCEPTCONN flag for one-to-many sockets */
4158                 so->so_options &= ~SO_ACCEPTCONN;
4159         }
4160         if (backlog == 0) {
4161                 /* turning off listen */
4162                 so->so_options &= ~SO_ACCEPTCONN;
4163         }
4164         SOCK_UNLOCK(so);
4165         return (error);
4166 }
4167
4168 static int sctp_defered_wakeup_cnt = 0;
4169
4170 int
4171 sctp_accept(struct socket *so, struct sockaddr **addr)
4172 {
4173         struct sctp_tcb *stcb;
4174         struct sctp_inpcb *inp;
4175         union sctp_sockstore store;
4176
4177         int error;
4178
4179         inp = (struct sctp_inpcb *)so->so_pcb;
4180
4181         if (inp == 0) {
4182                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4183                 return (ECONNRESET);
4184         }
4185         SCTP_INP_RLOCK(inp);
4186         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
4187                 SCTP_INP_RUNLOCK(inp);
4188                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
4189                 return (EOPNOTSUPP);
4190         }
4191         if (so->so_state & SS_ISDISCONNECTED) {
4192                 SCTP_INP_RUNLOCK(inp);
4193                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ECONNABORTED);
4194                 return (ECONNABORTED);
4195         }
4196         stcb = LIST_FIRST(&inp->sctp_asoc_list);
4197         if (stcb == NULL) {
4198                 SCTP_INP_RUNLOCK(inp);
4199                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4200                 return (ECONNRESET);
4201         }
4202         SCTP_TCB_LOCK(stcb);
4203         SCTP_INP_RUNLOCK(inp);
4204         store = stcb->asoc.primary_destination->ro._l_addr;
4205         SCTP_TCB_UNLOCK(stcb);
4206         if (store.sa.sa_family == AF_INET) {
4207                 struct sockaddr_in *sin;
4208
4209                 SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
4210                 sin->sin_family = AF_INET;
4211                 sin->sin_len = sizeof(*sin);
4212                 sin->sin_port = ((struct sockaddr_in *)&store)->sin_port;
4213                 sin->sin_addr = ((struct sockaddr_in *)&store)->sin_addr;
4214                 *addr = (struct sockaddr *)sin;
4215         } else {
4216                 struct sockaddr_in6 *sin6;
4217
4218                 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
4219                 sin6->sin6_family = AF_INET6;
4220                 sin6->sin6_len = sizeof(*sin6);
4221                 sin6->sin6_port = ((struct sockaddr_in6 *)&store)->sin6_port;
4222
4223                 sin6->sin6_addr = ((struct sockaddr_in6 *)&store)->sin6_addr;
4224                 if ((error = sa6_recoverscope(sin6)) != 0) {
4225                         SCTP_FREE_SONAME(sin6);
4226                         return (error);
4227                 }
4228                 *addr = (struct sockaddr *)sin6;
4229         }
4230         /* Wake any delayed sleep action */
4231         if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) {
4232                 SCTP_INP_WLOCK(inp);
4233                 inp->sctp_flags &= ~SCTP_PCB_FLAGS_DONT_WAKE;
4234                 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT) {
4235                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
4236                         SCTP_INP_WUNLOCK(inp);
4237                         SOCKBUF_LOCK(&inp->sctp_socket->so_snd);
4238                         if (sowriteable(inp->sctp_socket)) {
4239                                 sowwakeup_locked(inp->sctp_socket);
4240                         } else {
4241                                 SOCKBUF_UNLOCK(&inp->sctp_socket->so_snd);
4242                         }
4243                         SCTP_INP_WLOCK(inp);
4244                 }
4245                 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT) {
4246                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
4247                         SCTP_INP_WUNLOCK(inp);
4248                         SOCKBUF_LOCK(&inp->sctp_socket->so_rcv);
4249                         if (soreadable(inp->sctp_socket)) {
4250                                 sctp_defered_wakeup_cnt++;
4251                                 sorwakeup_locked(inp->sctp_socket);
4252                         } else {
4253                                 SOCKBUF_UNLOCK(&inp->sctp_socket->so_rcv);
4254                         }
4255                         SCTP_INP_WLOCK(inp);
4256                 }
4257                 SCTP_INP_WUNLOCK(inp);
4258         }
4259         return (0);
4260 }
4261
4262 int
4263 sctp_ingetaddr(struct socket *so, struct sockaddr **addr)
4264 {
4265         struct sockaddr_in *sin;
4266         uint32_t vrf_id;
4267         struct sctp_inpcb *inp;
4268         struct sctp_ifa *sctp_ifa;
4269
4270         /*
4271          * Do the malloc first in case it blocks.
4272          */
4273         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
4274         sin->sin_family = AF_INET;
4275         sin->sin_len = sizeof(*sin);
4276         inp = (struct sctp_inpcb *)so->so_pcb;
4277         if (!inp) {
4278                 SCTP_FREE_SONAME(sin);
4279                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4280                 return ECONNRESET;
4281         }
4282         SCTP_INP_RLOCK(inp);
4283         sin->sin_port = inp->sctp_lport;
4284         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
4285                 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4286                         struct sctp_tcb *stcb;
4287                         struct sockaddr_in *sin_a;
4288                         struct sctp_nets *net;
4289                         int fnd;
4290
4291                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
4292                         if (stcb == NULL) {
4293                                 goto notConn;
4294                         }
4295                         fnd = 0;
4296                         sin_a = NULL;
4297                         SCTP_TCB_LOCK(stcb);
4298                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
4299                                 sin_a = (struct sockaddr_in *)&net->ro._l_addr;
4300                                 if (sin_a == NULL)
4301                                         /* this will make coverity happy */
4302                                         continue;
4303
4304                                 if (sin_a->sin_family == AF_INET) {
4305                                         fnd = 1;
4306                                         break;
4307                                 }
4308                         }
4309                         if ((!fnd) || (sin_a == NULL)) {
4310                                 /* punt */
4311                                 SCTP_TCB_UNLOCK(stcb);
4312                                 goto notConn;
4313                         }
4314                         vrf_id = inp->def_vrf_id;
4315                         sctp_ifa = sctp_source_address_selection(inp,
4316                             stcb,
4317                             (sctp_route_t *) & net->ro,
4318                             net, 0, vrf_id);
4319                         if (sctp_ifa) {
4320                                 sin->sin_addr = sctp_ifa->address.sin.sin_addr;
4321                                 sctp_free_ifa(sctp_ifa);
4322                         }
4323                         SCTP_TCB_UNLOCK(stcb);
4324                 } else {
4325                         /* For the bound all case you get back 0 */
4326         notConn:
4327                         sin->sin_addr.s_addr = 0;
4328                 }
4329
4330         } else {
4331                 /* Take the first IPv4 address in the list */
4332                 struct sctp_laddr *laddr;
4333                 int fnd = 0;
4334
4335                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4336                         if (laddr->ifa->address.sa.sa_family == AF_INET) {
4337                                 struct sockaddr_in *sin_a;
4338
4339                                 sin_a = (struct sockaddr_in *)&laddr->ifa->address.sa;
4340                                 sin->sin_addr = sin_a->sin_addr;
4341                                 fnd = 1;
4342                                 break;
4343                         }
4344                 }
4345                 if (!fnd) {
4346                         SCTP_FREE_SONAME(sin);
4347                         SCTP_INP_RUNLOCK(inp);
4348                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
4349                         return ENOENT;
4350                 }
4351         }
4352         SCTP_INP_RUNLOCK(inp);
4353         (*addr) = (struct sockaddr *)sin;
4354         return (0);
4355 }
4356
4357 int
4358 sctp_peeraddr(struct socket *so, struct sockaddr **addr)
4359 {
4360         struct sockaddr_in *sin = (struct sockaddr_in *)*addr;
4361         int fnd;
4362         struct sockaddr_in *sin_a;
4363         struct sctp_inpcb *inp;
4364         struct sctp_tcb *stcb;
4365         struct sctp_nets *net;
4366
4367         /* Do the malloc first in case it blocks. */
4368         inp = (struct sctp_inpcb *)so->so_pcb;
4369         if ((inp == NULL) ||
4370             ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) {
4371                 /* UDP type and listeners will drop out here */
4372                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
4373                 return (ENOTCONN);
4374         }
4375         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
4376         sin->sin_family = AF_INET;
4377         sin->sin_len = sizeof(*sin);
4378
4379         /* We must recapture incase we blocked */
4380         inp = (struct sctp_inpcb *)so->so_pcb;
4381         if (!inp) {
4382                 SCTP_FREE_SONAME(sin);
4383                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4384                 return ECONNRESET;
4385         }
4386         SCTP_INP_RLOCK(inp);
4387         stcb = LIST_FIRST(&inp->sctp_asoc_list);
4388         if (stcb) {
4389                 SCTP_TCB_LOCK(stcb);
4390         }
4391         SCTP_INP_RUNLOCK(inp);
4392         if (stcb == NULL) {
4393                 SCTP_FREE_SONAME(sin);
4394                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4395                 return ECONNRESET;
4396         }
4397         fnd = 0;
4398         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
4399                 sin_a = (struct sockaddr_in *)&net->ro._l_addr;
4400                 if (sin_a->sin_family == AF_INET) {
4401                         fnd = 1;
4402                         sin->sin_port = stcb->rport;
4403                         sin->sin_addr = sin_a->sin_addr;
4404                         break;
4405                 }
4406         }
4407         SCTP_TCB_UNLOCK(stcb);
4408         if (!fnd) {
4409                 /* No IPv4 address */
4410                 SCTP_FREE_SONAME(sin);
4411                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
4412                 return ENOENT;
4413         }
4414         (*addr) = (struct sockaddr *)sin;
4415         return (0);
4416 }
4417
4418 struct pr_usrreqs sctp_usrreqs = {
4419         .pru_abort = sctp_abort,
4420         .pru_accept = sctp_accept,
4421         .pru_attach = sctp_attach,
4422         .pru_bind = sctp_bind,
4423         .pru_connect = sctp_connect,
4424         .pru_control = in_control,
4425         .pru_close = sctp_close,
4426         .pru_detach = sctp_close,
4427         .pru_sopoll = sopoll_generic,
4428         .pru_disconnect = sctp_disconnect,
4429         .pru_listen = sctp_listen,
4430         .pru_peeraddr = sctp_peeraddr,
4431         .pru_send = sctp_sendm,
4432         .pru_shutdown = sctp_shutdown,
4433         .pru_sockaddr = sctp_ingetaddr,
4434         .pru_sosend = sctp_sosend,
4435         .pru_soreceive = sctp_soreceive
4436 };