sys/netinet/sctp_usrreq.c

   1 /*-
   2  * Copyright (c) 2001-2008, 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 #endif
  42 #include <netinet/sctp_sysctl.h>
  43 #include <netinet/sctp_output.h>
  44 #include <netinet/sctp_uio.h>
  45 #include <netinet/sctp_asconf.h>
  46 #include <netinet/sctputil.h>
  47 #include <netinet/sctp_indata.h>
  48 #include <netinet/sctp_timer.h>
  49 #include <netinet/sctp_auth.h>
  50 #include <netinet/sctp_bsd_addr.h>
  51 #include <netinet/sctp_cc_functions.h>
  52 #include <netinet/udp.h>
  53
  54
  55
  56
  57 void
  58 sctp_init(void)
  59 {
  60         u_long sb_max_adj;
  61
  62         bzero(&SCTP_BASE_STATS, sizeof(struct sctpstat));
  63
  64         /* Initialize and modify the sysctled variables */
  65         sctp_init_sysctls();
  66         if ((nmbclusters / 8) > SCTP_ASOC_MAX_CHUNKS_ON_QUEUE)
  67                 SCTP_BASE_SYSCTL(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_BASE_SYSCTL(sctp_sendspace) = min(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_BASE_SYSCTL(sctp_recvspace) = SCTP_BASE_SYSCTL(sctp_sendspace);
  81
  82         SCTP_BASE_VAR(first_time) = 0;
  83         SCTP_BASE_VAR(sctp_pcb_initialized) = 0;
  84         sctp_pcb_init();
  85 #if defined(SCTP_PACKET_LOGGING)
  86         SCTP_BASE_VAR(packet_log_writers) = 0;
  87         SCTP_BASE_VAR(packet_log_end) = 0;
  88         bzero(&SCTP_BASE_VAR(packet_log_buffer), SCTP_PACKET_LOG_SIZE);
  89 #endif
  90
  91
  92 }
  93
  94 void
  95 sctp_finish(void)
  96 {
  97         sctp_pcb_finish();
  98 }
  99
 100
 101
 102 void
 103 sctp_pathmtu_adjustment(struct sctp_inpcb *inp,
 104     struct sctp_tcb *stcb,
 105     struct sctp_nets *net,
 106     uint16_t nxtsz)
 107 {
 108         struct sctp_tmit_chunk *chk;
 109         uint16_t overhead;
 110
 111         /* Adjust that too */
 112         stcb->asoc.smallest_mtu = nxtsz;
 113         /* now off to subtract IP_DF flag if needed */
 114         overhead = IP_HDR_SIZE;
 115         if (sctp_auth_is_required_chunk(SCTP_DATA, stcb->asoc.peer_auth_chunks)) {
 116                 overhead += sctp_get_auth_chunk_len(stcb->asoc.peer_hmac_id);
 117         }
 118         TAILQ_FOREACH(chk, &stcb->asoc.send_queue, sctp_next) {
 119                 if ((chk->send_size + overhead) > nxtsz) {
 120                         chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
 121                 }
 122         }
 123         TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
 124                 if ((chk->send_size + overhead) > nxtsz) {
 125                         /*
 126                          * For this guy we also mark for immediate resend
 127                          * since we sent to big of chunk
 128                          */
 129                         chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
 130                         if (chk->sent < SCTP_DATAGRAM_RESEND) {
 131                                 sctp_flight_size_decrease(chk);
 132                                 sctp_total_flight_decrease(stcb, chk);
 133                         }
 134                         if (chk->sent != SCTP_DATAGRAM_RESEND) {
 135                                 sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt);
 136                         }
 137                         chk->sent = SCTP_DATAGRAM_RESEND;
 138                         chk->rec.data.doing_fast_retransmit = 0;
 139                         if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FLIGHT_LOGGING_ENABLE) {
 140                                 sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_PMTU,
 141                                     chk->whoTo->flight_size,
 142                                     chk->book_size,
 143                                     (uintptr_t) chk->whoTo,
 144                                     chk->rec.data.TSN_seq);
 145                         }
 146                         /* Clear any time so NO RTT is being done */
 147                         chk->do_rtt = 0;
 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 = sctp_get_prev_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                 if (net->port) {
 209                         net->mtu -= sizeof(struct udphdr);
 210                 }
 211         }
 212         /* now what about the ep? */
 213         if (stcb->asoc.smallest_mtu > nxtsz) {
 214                 sctp_pathmtu_adjustment(inp, stcb, net, nxtsz);
 215         }
 216         if (tmr_stopped)
 217                 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
 218
 219         SCTP_TCB_UNLOCK(stcb);
 220 }
 221
 222
 223 void
 224 sctp_notify(struct sctp_inpcb *inp,
 225     struct ip *ip,
 226     struct sctphdr *sh,
 227     struct sockaddr *to,
 228     struct sctp_tcb *stcb,
 229     struct sctp_nets *net)
 230 {
 231 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
 232         struct socket *so;
 233
 234 #endif
 235         /* protection */
 236         int reason;
 237         struct icmp *icmph;
 238
 239
 240         if ((inp == NULL) || (stcb == NULL) || (net == NULL) ||
 241             (sh == NULL) || (to == NULL)) {
 242                 if (stcb)
 243                         SCTP_TCB_UNLOCK(stcb);
 244                 return;
 245         }
 246         /* First job is to verify the vtag matches what I would send */
 247         if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) {
 248                 SCTP_TCB_UNLOCK(stcb);
 249                 return;
 250         }
 251         icmph = (struct icmp *)((caddr_t)ip - (sizeof(struct icmp) -
 252             sizeof(struct ip)));
 253         if (icmph->icmp_type != ICMP_UNREACH) {
 254                 /* We only care about unreachable */
 255                 SCTP_TCB_UNLOCK(stcb);
 256                 return;
 257         }
 258         if ((icmph->icmp_code == ICMP_UNREACH_NET) ||
 259             (icmph->icmp_code == ICMP_UNREACH_HOST) ||
 260             (icmph->icmp_code == ICMP_UNREACH_NET_UNKNOWN) ||
 261             (icmph->icmp_code == ICMP_UNREACH_HOST_UNKNOWN) ||
 262             (icmph->icmp_code == ICMP_UNREACH_ISOLATED) ||
 263             (icmph->icmp_code == ICMP_UNREACH_NET_PROHIB) ||
 264             (icmph->icmp_code == ICMP_UNREACH_HOST_PROHIB) ||
 265             (icmph->icmp_code == ICMP_UNREACH_FILTER_PROHIB)) {
 266
 267                 /*
 268                  * Hmm reachablity problems we must examine closely. If its
 269                  * not reachable, we may have lost a network. Or if there is
 270                  * NO protocol at the other end named SCTP. well we consider
 271                  * it a OOTB abort.
 272                  */
 273                 if (net->dest_state & SCTP_ADDR_REACHABLE) {
 274                         /* Ok that destination is NOT reachable */
 275                         SCTP_PRINTF("ICMP (thresh %d/%d) takes interface %p down\n",
 276                             net->error_count,
 277                             net->failure_threshold,
 278                             net);
 279
 280                         net->dest_state &= ~SCTP_ADDR_REACHABLE;
 281                         net->dest_state |= SCTP_ADDR_NOT_REACHABLE;
 282                         /*
 283                          * JRS 5/14/07 - If a destination is unreachable,
 284                          * the PF bit is turned off.  This allows an
 285                          * unambiguous use of the PF bit for destinations
 286                          * that are reachable but potentially failed. If the
 287                          * destination is set to the unreachable state, also
 288                          * set the destination to the PF state.
 289                          */
 290                         /*
 291                          * Add debug message here if destination is not in
 292                          * PF state.
 293                          */
 294                         /* Stop any running T3 timers here? */
 295                         if ((stcb->asoc.sctp_cmt_on_off == 1) &&
 296                             (stcb->asoc.sctp_cmt_pf > 0)) {
 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                         if (stcb) {
 399                                 SCTP_TCB_UNLOCK(stcb);
 400                         }
 401                 }
 402         }
 403         return;
 404 }
 405
 406 static int
 407 sctp_getcred(SYSCTL_HANDLER_ARGS)
 408 {
 409         struct xucred xuc;
 410         struct sockaddr_in addrs[2];
 411         struct sctp_inpcb *inp;
 412         struct sctp_nets *net;
 413         struct sctp_tcb *stcb;
 414         int error;
 415         uint32_t vrf_id;
 416
 417         /* FIX, for non-bsd is this right? */
 418         vrf_id = SCTP_DEFAULT_VRFID;
 419
 420         error = priv_check(req->td, PRIV_NETINET_GETCRED);
 421
 422         if (error)
 423                 return (error);
 424
 425         error = SYSCTL_IN(req, addrs, sizeof(addrs));
 426         if (error)
 427                 return (error);
 428
 429         stcb = sctp_findassociation_addr_sa(sintosa(&addrs[0]),
 430             sintosa(&addrs[1]),
 431             &inp, &net, 1, vrf_id);
 432         if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) {
 433                 if ((inp != NULL) && (stcb == NULL)) {
 434                         /* reduce ref-count */
 435                         SCTP_INP_WLOCK(inp);
 436                         SCTP_INP_DECR_REF(inp);
 437                         goto cred_can_cont;
 438                 }
 439                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
 440                 error = ENOENT;
 441                 goto out;
 442         }
 443         SCTP_TCB_UNLOCK(stcb);
 444         /*
 445          * We use the write lock here, only since in the error leg we need
 446          * it. If we used RLOCK, then we would have to
 447          * wlock/decr/unlock/rlock. Which in theory could create a hole.
 448          * Better to use higher wlock.
 449          */
 450         SCTP_INP_WLOCK(inp);
 451 cred_can_cont:
 452         error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket);
 453         if (error) {
 454                 SCTP_INP_WUNLOCK(inp);
 455                 goto out;
 456         }
 457         cru2x(inp->sctp_socket->so_cred, &xuc);
 458         SCTP_INP_WUNLOCK(inp);
 459         error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred));
 460 out:
 461         return (error);
 462 }
 463
 464 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW,
 465     0, 0, sctp_getcred, "S,ucred", "Get the ucred of a SCTP connection");
 466
 467
 468 static void
 469 sctp_abort(struct socket *so)
 470 {
 471         struct sctp_inpcb *inp;
 472         uint32_t flags;
 473
 474         inp = (struct sctp_inpcb *)so->so_pcb;
 475         if (inp == 0) {
 476                 return;
 477         }
 478 sctp_must_try_again:
 479         flags = inp->sctp_flags;
 480 #ifdef SCTP_LOG_CLOSING
 481         sctp_log_closing(inp, NULL, 17);
 482 #endif
 483         if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
 484             (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
 485 #ifdef SCTP_LOG_CLOSING
 486                 sctp_log_closing(inp, NULL, 16);
 487 #endif
 488                 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
 489                     SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
 490                 SOCK_LOCK(so);
 491                 SCTP_SB_CLEAR(so->so_snd);
 492                 /*
 493                  * same for the rcv ones, they are only here for the
 494                  * accounting/select.
 495                  */
 496                 SCTP_SB_CLEAR(so->so_rcv);
 497
 498                 /* Now null out the reference, we are completely detached. */
 499                 so->so_pcb = NULL;
 500                 SOCK_UNLOCK(so);
 501         } else {
 502                 flags = inp->sctp_flags;
 503                 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
 504                         goto sctp_must_try_again;
 505                 }
 506         }
 507         return;
 508 }
 509
 510 static int
 511 sctp_attach(struct socket *so, int proto, struct thread *p)
 512 {
 513         struct sctp_inpcb *inp;
 514         struct inpcb *ip_inp;
 515         int error;
 516         uint32_t vrf_id = SCTP_DEFAULT_VRFID;
 517
 518 #ifdef IPSEC
 519         uint32_t flags;
 520
 521 #endif
 522
 523         inp = (struct sctp_inpcb *)so->so_pcb;
 524         if (inp != 0) {
 525                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 526                 return EINVAL;
 527         }
 528         if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
 529                 error = SCTP_SORESERVE(so, SCTP_BASE_SYSCTL(sctp_sendspace), SCTP_BASE_SYSCTL(sctp_recvspace));
 530                 if (error) {
 531                         return error;
 532                 }
 533         }
 534         error = sctp_inpcb_alloc(so, vrf_id);
 535         if (error) {
 536                 return error;
 537         }
 538         inp = (struct sctp_inpcb *)so->so_pcb;
 539         SCTP_INP_WLOCK(inp);
 540         inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUND_V6;    /* I'm not v6! */
 541         ip_inp = &inp->ip_inp.inp;
 542         ip_inp->inp_vflag |= INP_IPV4;
 543         ip_inp->inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
 544 #ifdef IPSEC
 545         error = ipsec_init_policy(so, &ip_inp->inp_sp);
 546 #ifdef SCTP_LOG_CLOSING
 547         sctp_log_closing(inp, NULL, 17);
 548 #endif
 549         if (error != 0) {
 550 try_again:
 551                 flags = inp->sctp_flags;
 552                 if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
 553                     (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
 554 #ifdef SCTP_LOG_CLOSING
 555                         sctp_log_closing(inp, NULL, 15);
 556 #endif
 557                         SCTP_INP_WUNLOCK(inp);
 558                         sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
 559                             SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
 560                 } else {
 561                         flags = inp->sctp_flags;
 562                         if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
 563                                 goto try_again;
 564                         } else {
 565                                 SCTP_INP_WUNLOCK(inp);
 566                         }
 567                 }
 568                 return error;
 569         }
 570 #endif                          /* IPSEC */
 571         SCTP_INP_WUNLOCK(inp);
 572         return 0;
 573 }
 574
 575 static int
 576 sctp_bind(struct socket *so, struct sockaddr *addr, struct thread *p)
 577 {
 578         struct sctp_inpcb *inp = NULL;
 579         int error;
 580
 581 #ifdef INET6
 582         if (addr && addr->sa_family != AF_INET) {
 583                 /* must be a v4 address! */
 584                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 585                 return EINVAL;
 586         }
 587 #endif                          /* INET6 */
 588         if (addr && (addr->sa_len != sizeof(struct sockaddr_in))) {
 589                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 590                 return EINVAL;
 591         }
 592         inp = (struct sctp_inpcb *)so->so_pcb;
 593         if (inp == 0) {
 594                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 595                 return EINVAL;
 596         }
 597         error = sctp_inpcb_bind(so, addr, NULL, p);
 598         return error;
 599 }
 600
 601 void
 602 sctp_close(struct socket *so)
 603 {
 604         struct sctp_inpcb *inp;
 605         uint32_t flags;
 606
 607         inp = (struct sctp_inpcb *)so->so_pcb;
 608         if (inp == 0)
 609                 return;
 610
 611         /*
 612          * Inform all the lower layer assoc that we are done.
 613          */
 614 sctp_must_try_again:
 615         flags = inp->sctp_flags;
 616 #ifdef SCTP_LOG_CLOSING
 617         sctp_log_closing(inp, NULL, 17);
 618 #endif
 619         if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
 620             (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
 621                 if (((so->so_options & SO_LINGER) && (so->so_linger == 0)) ||
 622                     (so->so_rcv.sb_cc > 0)) {
 623 #ifdef SCTP_LOG_CLOSING
 624                         sctp_log_closing(inp, NULL, 13);
 625 #endif
 626                         sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
 627                             SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
 628                 } else {
 629 #ifdef SCTP_LOG_CLOSING
 630                         sctp_log_closing(inp, NULL, 14);
 631 #endif
 632                         sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
 633                             SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
 634                 }
 635                 /*
 636                  * The socket is now detached, no matter what the state of
 637                  * the SCTP association.
 638                  */
 639                 SOCK_LOCK(so);
 640                 SCTP_SB_CLEAR(so->so_snd);
 641                 /*
 642                  * same for the rcv ones, they are only here for the
 643                  * accounting/select.
 644                  */
 645                 SCTP_SB_CLEAR(so->so_rcv);
 646
 647                 /* Now null out the reference, we are completely detached. */
 648                 so->so_pcb = NULL;
 649                 SOCK_UNLOCK(so);
 650         } else {
 651                 flags = inp->sctp_flags;
 652                 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
 653                         goto sctp_must_try_again;
 654                 }
 655         }
 656         return;
 657 }
 658
 659
 660 int
 661 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
 662     struct mbuf *control, struct thread *p);
 663
 664
 665 int
 666 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
 667     struct mbuf *control, struct thread *p)
 668 {
 669         struct sctp_inpcb *inp;
 670         int error;
 671
 672         inp = (struct sctp_inpcb *)so->so_pcb;
 673         if (inp == 0) {
 674                 if (control) {
 675                         sctp_m_freem(control);
 676                         control = NULL;
 677                 }
 678                 SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 679                 sctp_m_freem(m);
 680                 return EINVAL;
 681         }
 682         /* Got to have an to address if we are NOT a connected socket */
 683         if ((addr == NULL) &&
 684             ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) ||
 685             (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE))
 686             ) {
 687                 goto connected_type;
 688         } else if (addr == NULL) {
 689                 SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EDESTADDRREQ);
 690                 error = EDESTADDRREQ;
 691                 sctp_m_freem(m);
 692                 if (control) {
 693                         sctp_m_freem(control);
 694                         control = NULL;
 695                 }
 696                 return (error);
 697         }
 698 #ifdef INET6
 699         if (addr->sa_family != AF_INET) {
 700                 /* must be a v4 address! */
 701                 SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EDESTADDRREQ);
 702                 sctp_m_freem(m);
 703                 if (control) {
 704                         sctp_m_freem(control);
 705                         control = NULL;
 706                 }
 707                 error = EDESTADDRREQ;
 708                 return EDESTADDRREQ;
 709         }
 710 #endif                          /* INET6 */
 711 connected_type:
 712         /* now what about control */
 713         if (control) {
 714                 if (inp->control) {
 715                         SCTP_PRINTF("huh? control set?\n");
 716                         sctp_m_freem(inp->control);
 717                         inp->control = NULL;
 718                 }
 719                 inp->control = control;
 720         }
 721         /* Place the data */
 722         if (inp->pkt) {
 723                 SCTP_BUF_NEXT(inp->pkt_last) = m;
 724                 inp->pkt_last = m;
 725         } else {
 726                 inp->pkt_last = inp->pkt = m;
 727         }
 728         if (
 729         /* FreeBSD uses a flag passed */
 730             ((flags & PRUS_MORETOCOME) == 0)
 731             ) {
 732                 /*
 733                  * note with the current version this code will only be used
 734                  * by OpenBSD-- NetBSD, FreeBSD, and MacOS have methods for
 735                  * re-defining sosend to use the sctp_sosend. One can
 736                  * optionally switch back to this code (by changing back the
 737                  * definitions) but this is not advisable. This code is used
 738                  * by FreeBSD when sending a file with sendfile() though.
 739                  */
 740                 int ret;
 741
 742                 ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags);
 743                 inp->pkt = NULL;
 744                 inp->control = NULL;
 745                 return (ret);
 746         } else {
 747                 return (0);
 748         }
 749 }
 750
 751 int
 752 sctp_disconnect(struct socket *so)
 753 {
 754         struct sctp_inpcb *inp;
 755
 756         inp = (struct sctp_inpcb *)so->so_pcb;
 757         if (inp == NULL) {
 758                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
 759                 return (ENOTCONN);
 760         }
 761         SCTP_INP_RLOCK(inp);
 762         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
 763             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
 764                 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
 765                         /* No connection */
 766                         SCTP_INP_RUNLOCK(inp);
 767                         return (0);
 768                 } else {
 769                         struct sctp_association *asoc;
 770                         struct sctp_tcb *stcb;
 771
 772                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
 773                         if (stcb == NULL) {
 774                                 SCTP_INP_RUNLOCK(inp);
 775                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 776                                 return (EINVAL);
 777                         }
 778                         SCTP_TCB_LOCK(stcb);
 779                         asoc = &stcb->asoc;
 780                         if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
 781                                 /* We are about to be freed, out of here */
 782                                 SCTP_TCB_UNLOCK(stcb);
 783                                 SCTP_INP_RUNLOCK(inp);
 784                                 return (0);
 785                         }
 786                         if (((so->so_options & SO_LINGER) &&
 787                             (so->so_linger == 0)) ||
 788                             (so->so_rcv.sb_cc > 0)) {
 789                                 if (SCTP_GET_STATE(asoc) !=
 790                                     SCTP_STATE_COOKIE_WAIT) {
 791                                         /* Left with Data unread */
 792                                         struct mbuf *err;
 793
 794                                         err = sctp_get_mbuf_for_msg(sizeof(struct sctp_paramhdr), 0, M_DONTWAIT, 1, MT_DATA);
 795                                         if (err) {
 796                                                 /*
 797                                                  * Fill in the user
 798                                                  * initiated abort
 799                                                  */
 800                                                 struct sctp_paramhdr *ph;
 801
 802                                                 ph = mtod(err, struct sctp_paramhdr *);
 803                                                 SCTP_BUF_LEN(err) = sizeof(struct sctp_paramhdr);
 804                                                 ph->param_type = htons(SCTP_CAUSE_USER_INITIATED_ABT);
 805                                                 ph->param_length = htons(SCTP_BUF_LEN(err));
 806                                         }
 807 #if defined(SCTP_PANIC_ON_ABORT)
 808                                         panic("disconnect does an abort");
 809 #endif
 810                                         sctp_send_abort_tcb(stcb, err, SCTP_SO_LOCKED);
 811                                         SCTP_STAT_INCR_COUNTER32(sctps_aborted);
 812                                 }
 813                                 SCTP_INP_RUNLOCK(inp);
 814                                 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
 815                                     (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 816                                         SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 817                                 }
 818                                 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_3);
 819                                 /* No unlock tcb assoc is gone */
 820                                 return (0);
 821                         }
 822                         if (TAILQ_EMPTY(&asoc->send_queue) &&
 823                             TAILQ_EMPTY(&asoc->sent_queue) &&
 824                             (asoc->stream_queue_cnt == 0)) {
 825                                 /* there is nothing queued to send, so done */
 826                                 if (asoc->locked_on_sending) {
 827                                         goto abort_anyway;
 828                                 }
 829                                 if ((SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
 830                                     (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
 831                                         /* only send SHUTDOWN 1st time thru */
 832                                         sctp_stop_timers_for_shutdown(stcb);
 833                                         sctp_send_shutdown(stcb,
 834                                             stcb->asoc.primary_destination);
 835                                         sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_LOCKED);
 836                                         if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
 837                                             (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 838                                                 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 839                                         }
 840                                         SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT);
 841                                         SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING);
 842                                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN,
 843                                             stcb->sctp_ep, stcb,
 844                                             asoc->primary_destination);
 845                                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD,
 846                                             stcb->sctp_ep, stcb,
 847                                             asoc->primary_destination);
 848                                 }
 849                         } else {
 850                                 /*
 851                                  * we still got (or just got) data to send,
 852                                  * so set SHUTDOWN_PENDING
 853                                  */
 854                                 /*
 855                                  * XXX sockets draft says that SCTP_EOF
 856                                  * should be sent with no data. currently,
 857                                  * we will allow user data to be sent first
 858                                  * and move to SHUTDOWN-PENDING
 859                                  */
 860                                 asoc->state |= SCTP_STATE_SHUTDOWN_PENDING;
 861                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb,
 862                                     asoc->primary_destination);
 863                                 if (asoc->locked_on_sending) {
 864                                         /* Locked to send out the data */
 865                                         struct sctp_stream_queue_pending *sp;
 866
 867                                         sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead);
 868                                         if (sp == NULL) {
 869                                                 SCTP_PRINTF("Error, sp is NULL, locked on sending is non-null strm:%d\n",
 870                                                     asoc->locked_on_sending->stream_no);
 871                                         } else {
 872                                                 if ((sp->length == 0) && (sp->msg_is_complete == 0))
 873                                                         asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT;
 874                                         }
 875                                 }
 876                                 if (TAILQ_EMPTY(&asoc->send_queue) &&
 877                                     TAILQ_EMPTY(&asoc->sent_queue) &&
 878                                     (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
 879                                         struct mbuf *op_err;
 880
 881                         abort_anyway:
 882                                         op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
 883                                             0, M_DONTWAIT, 1, MT_DATA);
 884                                         if (op_err) {
 885                                                 /*
 886                                                  * Fill in the user
 887                                                  * initiated abort
 888                                                  */
 889                                                 struct sctp_paramhdr *ph;
 890                                                 uint32_t *ippp;
 891
 892                                                 SCTP_BUF_LEN(op_err) =
 893                                                     (sizeof(struct sctp_paramhdr) + sizeof(uint32_t));
 894                                                 ph = mtod(op_err,
 895                                                     struct sctp_paramhdr *);
 896                                                 ph->param_type = htons(
 897                                                     SCTP_CAUSE_USER_INITIATED_ABT);
 898                                                 ph->param_length = htons(SCTP_BUF_LEN(op_err));
 899                                                 ippp = (uint32_t *) (ph + 1);
 900                                                 *ippp = htonl(SCTP_FROM_SCTP_USRREQ + SCTP_LOC_4);
 901                                         }
 902 #if defined(SCTP_PANIC_ON_ABORT)
 903                                         panic("disconnect does an abort");
 904 #endif
 905
 906                                         stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_USRREQ + SCTP_LOC_4;
 907                                         sctp_send_abort_tcb(stcb, op_err, SCTP_SO_LOCKED);
 908                                         SCTP_STAT_INCR_COUNTER32(sctps_aborted);
 909                                         if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
 910                                             (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 911                                                 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 912                                         }
 913                                         SCTP_INP_RUNLOCK(inp);
 914                                         (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_5);
 915                                         return (0);
 916                                 } else {
 917                                         sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
 918                                 }
 919                         }
 920                         soisdisconnecting(so);
 921                         SCTP_TCB_UNLOCK(stcb);
 922                         SCTP_INP_RUNLOCK(inp);
 923                         return (0);
 924                 }
 925                 /* not reached */
 926         } else {
 927                 /* UDP model does not support this */
 928                 SCTP_INP_RUNLOCK(inp);
 929                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
 930                 return EOPNOTSUPP;
 931         }
 932 }
 933
 934 int
 935 sctp_flush(struct socket *so, int how)
 936 {
 937         /*
 938          * We will just clear out the values and let subsequent close clear
 939          * out the data, if any. Note if the user did a shutdown(SHUT_RD)
 940          * they will not be able to read the data, the socket will block
 941          * that from happening.
 942          */
 943         struct sctp_inpcb *inp;
 944
 945         inp = (struct sctp_inpcb *)so->so_pcb;
 946         if (inp == NULL) {
 947                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 948                 return EINVAL;
 949         }
 950         SCTP_INP_RLOCK(inp);
 951         /* For the 1 to many model this does nothing */
 952         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
 953                 SCTP_INP_RUNLOCK(inp);
 954                 return (0);
 955         }
 956         SCTP_INP_RUNLOCK(inp);
 957         if ((how == PRU_FLUSH_RD) || (how == PRU_FLUSH_RDWR)) {
 958                 /*
 959                  * First make sure the sb will be happy, we don't use these
 960                  * except maybe the count
 961                  */
 962                 SCTP_INP_WLOCK(inp);
 963                 SCTP_INP_READ_LOCK(inp);
 964                 inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_CANT_READ;
 965                 SCTP_INP_READ_UNLOCK(inp);
 966                 SCTP_INP_WUNLOCK(inp);
 967                 so->so_rcv.sb_cc = 0;
 968                 so->so_rcv.sb_mbcnt = 0;
 969                 so->so_rcv.sb_mb = NULL;
 970         }
 971         if ((how == PRU_FLUSH_WR) || (how == PRU_FLUSH_RDWR)) {
 972                 /*
 973                  * First make sure the sb will be happy, we don't use these
 974                  * except maybe the count
 975                  */
 976                 so->so_snd.sb_cc = 0;
 977                 so->so_snd.sb_mbcnt = 0;
 978                 so->so_snd.sb_mb = NULL;
 979
 980         }
 981         return (0);
 982 }
 983
 984 int
 985 sctp_shutdown(struct socket *so)
 986 {
 987         struct sctp_inpcb *inp;
 988
 989         inp = (struct sctp_inpcb *)so->so_pcb;
 990         if (inp == 0) {
 991                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 992                 return EINVAL;
 993         }
 994         SCTP_INP_RLOCK(inp);
 995         /* For UDP model this is a invalid call */
 996         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
 997                 /* Restore the flags that the soshutdown took away. */
 998                 SOCKBUF_LOCK(&so->so_rcv);
 999                 so->so_rcv.sb_state &= ~SBS_CANTRCVMORE;
1000                 SOCKBUF_UNLOCK(&so->so_rcv);
1001                 /* This proc will wakeup for read and do nothing (I hope) */
1002                 SCTP_INP_RUNLOCK(inp);
1003                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
1004                 return (EOPNOTSUPP);
1005         }
1006         /*
1007          * Ok if we reach here its the TCP model and it is either a SHUT_WR
1008          * or SHUT_RDWR. This means we put the shutdown flag against it.
1009          */
1010         {
1011                 struct sctp_tcb *stcb;
1012                 struct sctp_association *asoc;
1013
1014                 if ((so->so_state &
1015                     (SS_ISCONNECTED | SS_ISCONNECTING | SS_ISDISCONNECTING)) == 0) {
1016                         SCTP_INP_RUNLOCK(inp);
1017                         return (ENOTCONN);
1018                 }
1019                 socantsendmore(so);
1020
1021                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1022                 if (stcb == NULL) {
1023                         /*
1024                          * Ok we hit the case that the shutdown call was
1025                          * made after an abort or something. Nothing to do
1026                          * now.
1027                          */
1028                         SCTP_INP_RUNLOCK(inp);
1029                         return (0);
1030                 }
1031                 SCTP_TCB_LOCK(stcb);
1032                 asoc = &stcb->asoc;
1033                 if (TAILQ_EMPTY(&asoc->send_queue) &&
1034                     TAILQ_EMPTY(&asoc->sent_queue) &&
1035                     (asoc->stream_queue_cnt == 0)) {
1036                         if (asoc->locked_on_sending) {
1037                                 goto abort_anyway;
1038                         }
1039                         /* there is nothing queued to send, so I'm done... */
1040                         if (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) {
1041                                 /* only send SHUTDOWN the first time through */
1042                                 sctp_stop_timers_for_shutdown(stcb);
1043                                 sctp_send_shutdown(stcb,
1044                                     stcb->asoc.primary_destination);
1045                                 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_LOCKED);
1046                                 if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
1047                                     (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
1048                                         SCTP_STAT_DECR_GAUGE32(sctps_currestab);
1049                                 }
1050                                 SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT);
1051                                 SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING);
1052                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN,
1053                                     stcb->sctp_ep, stcb,
1054                                     asoc->primary_destination);
1055                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD,
1056                                     stcb->sctp_ep, stcb,
1057                                     asoc->primary_destination);
1058                         }
1059                 } else {
1060                         /*
1061                          * we still got (or just got) data to send, so set
1062                          * SHUTDOWN_PENDING
1063                          */
1064                         asoc->state |= SCTP_STATE_SHUTDOWN_PENDING;
1065                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb,
1066                             asoc->primary_destination);
1067
1068                         if (asoc->locked_on_sending) {
1069                                 /* Locked to send out the data */
1070                                 struct sctp_stream_queue_pending *sp;
1071
1072                                 sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead);
1073                                 if (sp == NULL) {
1074                                         SCTP_PRINTF("Error, sp is NULL, locked on sending is non-null strm:%d\n",
1075                                             asoc->locked_on_sending->stream_no);
1076                                 } else {
1077                                         if ((sp->length == 0) && (sp->msg_is_complete == 0)) {
1078                                                 asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT;
1079                                         }
1080                                 }
1081                         }
1082                         if (TAILQ_EMPTY(&asoc->send_queue) &&
1083                             TAILQ_EMPTY(&asoc->sent_queue) &&
1084                             (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
1085                                 struct mbuf *op_err;
1086
1087                 abort_anyway:
1088                                 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
1089                                     0, M_DONTWAIT, 1, MT_DATA);
1090                                 if (op_err) {
1091                                         /* Fill in the user initiated abort */
1092                                         struct sctp_paramhdr *ph;
1093                                         uint32_t *ippp;
1094
1095                                         SCTP_BUF_LEN(op_err) =
1096                                             sizeof(struct sctp_paramhdr) + sizeof(uint32_t);
1097                                         ph = mtod(op_err,
1098                                             struct sctp_paramhdr *);
1099                                         ph->param_type = htons(
1100                                             SCTP_CAUSE_USER_INITIATED_ABT);
1101                                         ph->param_length = htons(SCTP_BUF_LEN(op_err));
1102                                         ippp = (uint32_t *) (ph + 1);
1103                                         *ippp = htonl(SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6);
1104                                 }
1105 #if defined(SCTP_PANIC_ON_ABORT)
1106                                 panic("shutdown does an abort");
1107 #endif
1108                                 stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6;
1109                                 sctp_abort_an_association(stcb->sctp_ep, stcb,
1110                                     SCTP_RESPONSE_TO_USER_REQ,
1111                                     op_err, SCTP_SO_LOCKED);
1112                                 goto skip_unlock;
1113                         } else {
1114                                 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
1115                         }
1116                 }
1117                 SCTP_TCB_UNLOCK(stcb);
1118         }
1119 skip_unlock:
1120         SCTP_INP_RUNLOCK(inp);
1121         return 0;
1122 }
1123
1124 /*
1125  * copies a "user" presentable address and removes embedded scope, etc.
1126  * returns 0 on success, 1 on error
1127  */
1128 static uint32_t
1129 sctp_fill_user_address(struct sockaddr_storage *ss, struct sockaddr *sa)
1130 {
1131 #ifdef INET6
1132         struct sockaddr_in6 lsa6;
1133
1134         sa = (struct sockaddr *)sctp_recover_scope((struct sockaddr_in6 *)sa,
1135             &lsa6);
1136 #endif
1137         memcpy(ss, sa, sa->sa_len);
1138         return (0);
1139 }
1140
1141
1142
1143 /*
1144  * NOTE: assumes addr lock is held
1145  */
1146 static size_t
1147 sctp_fill_up_addresses_vrf(struct sctp_inpcb *inp,
1148     struct sctp_tcb *stcb,
1149     size_t limit,
1150     struct sockaddr_storage *sas,
1151     uint32_t vrf_id)
1152 {
1153         struct sctp_ifn *sctp_ifn;
1154         struct sctp_ifa *sctp_ifa;
1155         int loopback_scope, ipv4_local_scope, local_scope, site_scope;
1156         size_t actual;
1157         int ipv4_addr_legal, ipv6_addr_legal;
1158         struct sctp_vrf *vrf;
1159
1160         actual = 0;
1161         if (limit <= 0)
1162                 return (actual);
1163
1164         if (stcb) {
1165                 /* Turn on all the appropriate scope */
1166                 loopback_scope = stcb->asoc.loopback_scope;
1167                 ipv4_local_scope = stcb->asoc.ipv4_local_scope;
1168                 local_scope = stcb->asoc.local_scope;
1169                 site_scope = stcb->asoc.site_scope;
1170         } else {
1171                 /* Turn on ALL scope, since we look at the EP */
1172                 loopback_scope = ipv4_local_scope = local_scope =
1173                     site_scope = 1;
1174         }
1175         ipv4_addr_legal = ipv6_addr_legal = 0;
1176         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1177                 ipv6_addr_legal = 1;
1178                 if (SCTP_IPV6_V6ONLY(inp) == 0) {
1179                         ipv4_addr_legal = 1;
1180                 }
1181         } else {
1182                 ipv4_addr_legal = 1;
1183         }
1184         vrf = sctp_find_vrf(vrf_id);
1185         if (vrf == NULL) {
1186                 return (0);
1187         }
1188         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1189                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
1190                         if ((loopback_scope == 0) &&
1191                             SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
1192                                 /* Skip loopback if loopback_scope not set */
1193                                 continue;
1194                         }
1195                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
1196                                 if (stcb) {
1197                                         /*
1198                                          * For the BOUND-ALL case, the list
1199                                          * associated with a TCB is Always
1200                                          * considered a reverse list.. i.e.
1201                                          * it lists addresses that are NOT
1202                                          * part of the association. If this
1203                                          * is one of those we must skip it.
1204                                          */
1205                                         if (sctp_is_addr_restricted(stcb,
1206                                             sctp_ifa)) {
1207                                                 continue;
1208                                         }
1209                                 }
1210                                 switch (sctp_ifa->address.sa.sa_family) {
1211                                 case AF_INET:
1212                                         if (ipv4_addr_legal) {
1213                                                 struct sockaddr_in *sin;
1214
1215                                                 sin = (struct sockaddr_in *)&sctp_ifa->address.sa;
1216                                                 if (sin->sin_addr.s_addr == 0) {
1217                                                         /*
1218                                                          * we skip
1219                                                          * unspecifed
1220                                                          * addresses
1221                                                          */
1222                                                         continue;
1223                                                 }
1224                                                 if ((ipv4_local_scope == 0) &&
1225                                                     (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
1226                                                         continue;
1227                                                 }
1228 #ifdef INET6
1229                                                 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
1230                                                         in6_sin_2_v4mapsin6(sin, (struct sockaddr_in6 *)sas);
1231                                                         ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
1232                                                         sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(struct sockaddr_in6));
1233                                                         actual += sizeof(struct sockaddr_in6);
1234                                                 } else {
1235 #endif
1236                                                         memcpy(sas, sin, sizeof(*sin));
1237                                                         ((struct sockaddr_in *)sas)->sin_port = inp->sctp_lport;
1238                                                         sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(*sin));
1239                                                         actual += sizeof(*sin);
1240 #ifdef INET6
1241                                                 }
1242 #endif
1243                                                 if (actual >= limit) {
1244                                                         return (actual);
1245                                                 }
1246                                         } else {
1247                                                 continue;
1248                                         }
1249                                         break;
1250 #ifdef INET6
1251                                 case AF_INET6:
1252                                         if (ipv6_addr_legal) {
1253                                                 struct sockaddr_in6 *sin6;
1254
1255                                                 sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa;
1256                                                 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1257                                                         /*
1258                                                          * we skip
1259                                                          * unspecifed
1260                                                          * addresses
1261                                                          */
1262                                                         continue;
1263                                                 }
1264                                                 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
1265                                                         if (local_scope == 0)
1266                                                                 continue;
1267                                                         if (sin6->sin6_scope_id == 0) {
1268                                                                 if (sa6_recoverscope(sin6) != 0)
1269                                                                         /*
1270                                                                          *
1271                                                                          * bad
1272                                                                          *
1273                                                                          * li
1274                                                                          * nk
1275                                                                          *
1276                                                                          * loc
1277                                                                          * al
1278                                                                          *
1279                                                                          * add
1280                                                                          * re
1281                                                                          * ss
1282                                                                          * */
1283                                                                         continue;
1284                                                         }
1285                                                 }
1286                                                 if ((site_scope == 0) &&
1287                                                     (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
1288                                                         continue;
1289                                                 }
1290                                                 memcpy(sas, sin6, sizeof(*sin6));
1291                                                 ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
1292                                                 sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(*sin6));
1293                                                 actual += sizeof(*sin6);
1294                                                 if (actual >= limit) {
1295                                                         return (actual);
1296                                                 }
1297                                         } else {
1298                                                 continue;
1299                                         }
1300                                         break;
1301 #endif
1302                                 default:
1303                                         /* TSNH */
1304                                         break;
1305                                 }
1306                         }
1307                 }
1308         } else {
1309                 struct sctp_laddr *laddr;
1310
1311                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1312                         if (stcb) {
1313                                 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
1314                                         continue;
1315                                 }
1316                         }
1317                         if (sctp_fill_user_address(sas, &laddr->ifa->address.sa))
1318                                 continue;
1319
1320                         ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
1321                         sas = (struct sockaddr_storage *)((caddr_t)sas +
1322                             laddr->ifa->address.sa.sa_len);
1323                         actual += laddr->ifa->address.sa.sa_len;
1324                         if (actual >= limit) {
1325                                 return (actual);
1326                         }
1327                 }
1328         }
1329         return (actual);
1330 }
1331
1332 static size_t
1333 sctp_fill_up_addresses(struct sctp_inpcb *inp,
1334     struct sctp_tcb *stcb,
1335     size_t limit,
1336     struct sockaddr_storage *sas)
1337 {
1338         size_t size = 0;
1339
1340         SCTP_IPI_ADDR_RLOCK();
1341         /* fill up addresses for the endpoint's default vrf */
1342         size = sctp_fill_up_addresses_vrf(inp, stcb, limit, sas,
1343             inp->def_vrf_id);
1344         SCTP_IPI_ADDR_RUNLOCK();
1345         return (size);
1346 }
1347
1348 /*
1349  * NOTE: assumes addr lock is held
1350  */
1351 static int
1352 sctp_count_max_addresses_vrf(struct sctp_inpcb *inp, uint32_t vrf_id)
1353 {
1354         int cnt = 0;
1355         struct sctp_vrf *vrf = NULL;
1356
1357         /*
1358          * In both sub-set bound an bound_all cases we return the MAXIMUM
1359          * number of addresses that you COULD get. In reality the sub-set
1360          * bound may have an exclusion list for a given TCB OR in the
1361          * bound-all case a TCB may NOT include the loopback or other
1362          * addresses as well.
1363          */
1364         vrf = sctp_find_vrf(vrf_id);
1365         if (vrf == NULL) {
1366                 return (0);
1367         }
1368         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1369                 struct sctp_ifn *sctp_ifn;
1370                 struct sctp_ifa *sctp_ifa;
1371
1372                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
1373                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
1374                                 /* Count them if they are the right type */
1375                                 if (sctp_ifa->address.sa.sa_family == AF_INET) {
1376                                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4))
1377                                                 cnt += sizeof(struct sockaddr_in6);
1378                                         else
1379                                                 cnt += sizeof(struct sockaddr_in);
1380
1381                                 } else if (sctp_ifa->address.sa.sa_family == AF_INET6)
1382                                         cnt += sizeof(struct sockaddr_in6);
1383                         }
1384                 }
1385         } else {
1386                 struct sctp_laddr *laddr;
1387
1388                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1389                         if (laddr->ifa->address.sa.sa_family == AF_INET) {
1390                                 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4))
1391                                         cnt += sizeof(struct sockaddr_in6);
1392                                 else
1393                                         cnt += sizeof(struct sockaddr_in);
1394
1395                         } else if (laddr->ifa->address.sa.sa_family == AF_INET6)
1396                                 cnt += sizeof(struct sockaddr_in6);
1397                 }
1398         }
1399         return (cnt);
1400 }
1401
1402 static int
1403 sctp_count_max_addresses(struct sctp_inpcb *inp)
1404 {
1405         int cnt = 0;
1406
1407         SCTP_IPI_ADDR_RLOCK();
1408         /* count addresses for the endpoint's default VRF */
1409         cnt = sctp_count_max_addresses_vrf(inp, inp->def_vrf_id);
1410         SCTP_IPI_ADDR_RUNLOCK();
1411         return (cnt);
1412 }
1413
1414 static int
1415 sctp_do_connect_x(struct socket *so, struct sctp_inpcb *inp, void *optval,
1416     size_t optsize, void *p, int delay)
1417 {
1418         int error = 0;
1419         int creat_lock_on = 0;
1420         struct sctp_tcb *stcb = NULL;
1421         struct sockaddr *sa;
1422         int num_v6 = 0, num_v4 = 0, *totaddrp, totaddr;
1423         int added = 0;
1424         uint32_t vrf_id;
1425         int bad_addresses = 0;
1426         sctp_assoc_t *a_id;
1427
1428         SCTPDBG(SCTP_DEBUG_PCB1, "Connectx called\n");
1429
1430         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
1431             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
1432                 /* We are already connected AND the TCP model */
1433                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
1434                 return (EADDRINUSE);
1435         }
1436         if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
1437             (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE))) {
1438                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1439                 return (EINVAL);
1440         }
1441         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
1442                 SCTP_INP_RLOCK(inp);
1443                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1444                 SCTP_INP_RUNLOCK(inp);
1445         }
1446         if (stcb) {
1447                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
1448                 return (EALREADY);
1449         }
1450         SCTP_INP_INCR_REF(inp);
1451         SCTP_ASOC_CREATE_LOCK(inp);
1452         creat_lock_on = 1;
1453         if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
1454             (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
1455                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EFAULT);
1456                 error = EFAULT;
1457                 goto out_now;
1458         }
1459         totaddrp = (int *)optval;
1460         totaddr = *totaddrp;
1461         sa = (struct sockaddr *)(totaddrp + 1);
1462         stcb = sctp_connectx_helper_find(inp, sa, &totaddr, &num_v4, &num_v6, &error, (optsize - sizeof(int)), &bad_addresses);
1463         if ((stcb != NULL) || bad_addresses) {
1464                 /* Already have or am bring up an association */
1465                 SCTP_ASOC_CREATE_UNLOCK(inp);
1466                 creat_lock_on = 0;
1467                 if (stcb)
1468                         SCTP_TCB_UNLOCK(stcb);
1469                 if (bad_addresses == 0) {
1470                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
1471                         error = EALREADY;
1472                 }
1473                 goto out_now;
1474         }
1475 #ifdef INET6
1476         if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) &&
1477             (num_v6 > 0)) {
1478                 error = EINVAL;
1479                 goto out_now;
1480         }
1481         if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1482             (num_v4 > 0)) {
1483                 struct in6pcb *inp6;
1484
1485                 inp6 = (struct in6pcb *)inp;
1486                 if (SCTP_IPV6_V6ONLY(inp6)) {
1487                         /*
1488                          * if IPV6_V6ONLY flag, ignore connections destined
1489                          * to a v4 addr or v4-mapped addr
1490                          */
1491                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1492                         error = EINVAL;
1493                         goto out_now;
1494                 }
1495         }
1496 #endif                          /* INET6 */
1497         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
1498             SCTP_PCB_FLAGS_UNBOUND) {
1499                 /* Bind a ephemeral port */
1500                 error = sctp_inpcb_bind(so, NULL, NULL, p);
1501                 if (error) {
1502                         goto out_now;
1503                 }
1504         }
1505         /* FIX ME: do we want to pass in a vrf on the connect call? */
1506         vrf_id = inp->def_vrf_id;
1507
1508
1509         /* We are GOOD to go */
1510         stcb = sctp_aloc_assoc(inp, sa, &error, 0, vrf_id,
1511             (struct thread *)p
1512             );
1513         if (stcb == NULL) {
1514                 /* Gak! no memory */
1515                 goto out_now;
1516         }
1517         SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_COOKIE_WAIT);
1518         /* move to second address */
1519         if (sa->sa_family == AF_INET)
1520                 sa = (struct sockaddr *)((caddr_t)sa + sizeof(struct sockaddr_in));
1521         else
1522                 sa = (struct sockaddr *)((caddr_t)sa + sizeof(struct sockaddr_in6));
1523
1524         error = 0;
1525         added = sctp_connectx_helper_add(stcb, sa, (totaddr - 1), &error);
1526         /* Fill in the return id */
1527         if (error) {
1528                 (void)sctp_free_assoc(inp, stcb, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6);
1529                 goto out_now;
1530         }
1531         a_id = (sctp_assoc_t *) optval;
1532         *a_id = sctp_get_associd(stcb);
1533
1534         /* initialize authentication parameters for the assoc */
1535         sctp_initialize_auth_params(inp, stcb);
1536
1537         if (delay) {
1538                 /* doing delayed connection */
1539                 stcb->asoc.delayed_connection = 1;
1540                 sctp_timer_start(SCTP_TIMER_TYPE_INIT, inp, stcb, stcb->asoc.primary_destination);
1541         } else {
1542                 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
1543                 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
1544         }
1545         SCTP_TCB_UNLOCK(stcb);
1546         if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
1547                 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
1548                 /* Set the connected flag so we can queue data */
1549                 soisconnecting(so);
1550         }
1551 out_now:
1552         if (creat_lock_on) {
1553                 SCTP_ASOC_CREATE_UNLOCK(inp);
1554         }
1555         SCTP_INP_DECR_REF(inp);
1556         return error;
1557 }
1558
1559 #define SCTP_FIND_STCB(inp, stcb, assoc_id) { \
1560         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||\
1561             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { \
1562                 SCTP_INP_RLOCK(inp); \
1563                 stcb = LIST_FIRST(&inp->sctp_asoc_list); \
1564                 if (stcb) { \
1565                         SCTP_TCB_LOCK(stcb); \
1566                 } \
1567                 SCTP_INP_RUNLOCK(inp); \
1568         } else if (assoc_id != 0) { \
1569                 stcb = sctp_findassociation_ep_asocid(inp, assoc_id, 1); \
1570                 if (stcb == NULL) { \
1571                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT); \
1572                         error = ENOENT; \
1573                         break; \
1574                 } \
1575         } else { \
1576                 stcb = NULL; \
1577         } \
1578   }
1579
1580
1581 #define SCTP_CHECK_AND_CAST(destp, srcp, type, size)  {\
1582         if (size < sizeof(type)) { \
1583                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); \
1584                 error = EINVAL; \
1585                 break; \
1586         } else { \
1587                 destp = (type *)srcp; \
1588         } \
1589       }
1590
1591 static int
1592 sctp_getopt(struct socket *so, int optname, void *optval, size_t *optsize,
1593     void *p)
1594 {
1595         struct sctp_inpcb *inp = NULL;
1596         int error, val = 0;
1597         struct sctp_tcb *stcb = NULL;
1598
1599         if (optval == NULL) {
1600                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1601                 return (EINVAL);
1602         }
1603         inp = (struct sctp_inpcb *)so->so_pcb;
1604         if (inp == 0) {
1605                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1606                 return EINVAL;
1607         }
1608         error = 0;
1609
1610         switch (optname) {
1611         case SCTP_NODELAY:
1612         case SCTP_AUTOCLOSE:
1613         case SCTP_EXPLICIT_EOR:
1614         case SCTP_AUTO_ASCONF:
1615         case SCTP_DISABLE_FRAGMENTS:
1616         case SCTP_I_WANT_MAPPED_V4_ADDR:
1617         case SCTP_USE_EXT_RCVINFO:
1618                 SCTP_INP_RLOCK(inp);
1619                 switch (optname) {
1620                 case SCTP_DISABLE_FRAGMENTS:
1621                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NO_FRAGMENT);
1622                         break;
1623                 case SCTP_I_WANT_MAPPED_V4_ADDR:
1624                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4);
1625                         break;
1626                 case SCTP_AUTO_ASCONF:
1627                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1628                                 /* only valid for bound all sockets */
1629                                 val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
1630                         } else {
1631                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1632                                 error = EINVAL;
1633                                 goto flags_out;
1634                         }
1635                         break;
1636                 case SCTP_EXPLICIT_EOR:
1637                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
1638                         break;
1639                 case SCTP_NODELAY:
1640                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NODELAY);
1641                         break;
1642                 case SCTP_USE_EXT_RCVINFO:
1643                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO);
1644                         break;
1645                 case SCTP_AUTOCLOSE:
1646                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTOCLOSE))
1647                                 val = TICKS_TO_SEC(inp->sctp_ep.auto_close_time);
1648                         else
1649                                 val = 0;
1650                         break;
1651
1652                 default:
1653                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
1654                         error = ENOPROTOOPT;
1655                 }               /* end switch (sopt->sopt_name) */
1656                 if (optname != SCTP_AUTOCLOSE) {
1657                         /* make it an "on/off" value */
1658                         val = (val != 0);
1659                 }
1660                 if (*optsize < sizeof(val)) {
1661                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1662                         error = EINVAL;
1663                 }
1664 flags_out:
1665                 SCTP_INP_RUNLOCK(inp);
1666                 if (error == 0) {
1667                         /* return the option value */
1668                         *(int *)optval = val;
1669                         *optsize = sizeof(val);
1670                 }
1671                 break;
1672         case SCTP_GET_PACKET_LOG:
1673                 {
1674 #ifdef  SCTP_PACKET_LOGGING
1675                         uint8_t *target;
1676                         int ret;
1677
1678                         SCTP_CHECK_AND_CAST(target, optval, uint8_t, *optsize);
1679                         ret = sctp_copy_out_packet_log(target, (int)*optsize);
1680                         *optsize = ret;
1681 #else
1682                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
1683                         error = EOPNOTSUPP;
1684 #endif
1685                         break;
1686                 }
1687         case SCTP_REUSE_PORT:
1688                 {
1689                         uint32_t *value;
1690
1691                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE)) {
1692                                 /* Can't do this for a 1-m socket */
1693                                 error = EINVAL;
1694                                 break;
1695                         }
1696                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1697                         *value = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE);
1698                         *optsize = sizeof(uint32_t);
1699                 }
1700                 break;
1701         case SCTP_PARTIAL_DELIVERY_POINT:
1702                 {
1703                         uint32_t *value;
1704
1705                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1706                         *value = inp->partial_delivery_point;
1707                         *optsize = sizeof(uint32_t);
1708                 }
1709                 break;
1710         case SCTP_FRAGMENT_INTERLEAVE:
1711                 {
1712                         uint32_t *value;
1713
1714                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1715                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) {
1716                                 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) {
1717                                         *value = SCTP_FRAG_LEVEL_2;
1718                                 } else {
1719                                         *value = SCTP_FRAG_LEVEL_1;
1720                                 }
1721                         } else {
1722                                 *value = SCTP_FRAG_LEVEL_0;
1723                         }
1724                         *optsize = sizeof(uint32_t);
1725                 }
1726                 break;
1727         case SCTP_CMT_ON_OFF:
1728                 {
1729                         struct sctp_assoc_value *av;
1730
1731                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1732                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1733                         if (stcb) {
1734                                 av->assoc_value = stcb->asoc.sctp_cmt_on_off;
1735                                 SCTP_TCB_UNLOCK(stcb);
1736                         } else {
1737                                 SCTP_INP_RLOCK(inp);
1738                                 av->assoc_value = inp->sctp_cmt_on_off;
1739                                 SCTP_INP_RUNLOCK(inp);
1740                         }
1741                         *optsize = sizeof(*av);
1742                 }
1743                 break;
1744                 /* JRS - Get socket option for pluggable congestion control */
1745         case SCTP_PLUGGABLE_CC:
1746                 {
1747                         struct sctp_assoc_value *av;
1748
1749                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1750                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1751                         if (stcb) {
1752                                 av->assoc_value = stcb->asoc.congestion_control_module;
1753                                 SCTP_TCB_UNLOCK(stcb);
1754                         } else {
1755                                 av->assoc_value = inp->sctp_ep.sctp_default_cc_module;
1756                         }
1757                         *optsize = sizeof(*av);
1758                 }
1759                 break;
1760         case SCTP_GET_ADDR_LEN:
1761                 {
1762                         struct sctp_assoc_value *av;
1763
1764                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1765                         error = EINVAL;
1766 #ifdef INET
1767                         if (av->assoc_value == AF_INET) {
1768                                 av->assoc_value = sizeof(struct sockaddr_in);
1769                                 error = 0;
1770                         }
1771 #endif
1772 #ifdef INET6
1773                         if (av->assoc_value == AF_INET6) {
1774                                 av->assoc_value = sizeof(struct sockaddr_in6);
1775                                 error = 0;
1776                         }
1777 #endif
1778                         if (error) {
1779                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
1780                         }
1781                         *optsize = sizeof(*av);
1782                 }
1783                 break;
1784         case SCTP_GET_ASSOC_NUMBER:
1785                 {
1786                         uint32_t *value, cnt;
1787
1788                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1789                         cnt = 0;
1790                         SCTP_INP_RLOCK(inp);
1791                         LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
1792                                 cnt++;
1793                         }
1794                         SCTP_INP_RUNLOCK(inp);
1795                         *value = cnt;
1796                         *optsize = sizeof(uint32_t);
1797                 }
1798                 break;
1799
1800         case SCTP_GET_ASSOC_ID_LIST:
1801                 {
1802                         struct sctp_assoc_ids *ids;
1803                         unsigned int at, limit;
1804
1805                         SCTP_CHECK_AND_CAST(ids, optval, struct sctp_assoc_ids, *optsize);
1806                         at = 0;
1807                         limit = (*optsize - sizeof(uint32_t)) / sizeof(sctp_assoc_t);
1808                         SCTP_INP_RLOCK(inp);
1809                         LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
1810                                 if (at < limit) {
1811                                         ids->gaids_assoc_id[at++] = sctp_get_associd(stcb);
1812                                 } else {
1813                                         error = EINVAL;
1814                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
1815                                         break;
1816                                 }
1817                         }
1818                         SCTP_INP_RUNLOCK(inp);
1819                         ids->gaids_number_of_ids = at;
1820                         *optsize = ((at * sizeof(sctp_assoc_t)) + sizeof(uint32_t));
1821                 }
1822                 break;
1823         case SCTP_CONTEXT:
1824                 {
1825                         struct sctp_assoc_value *av;
1826
1827                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1828                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1829
1830                         if (stcb) {
1831                                 av->assoc_value = stcb->asoc.context;
1832                                 SCTP_TCB_UNLOCK(stcb);
1833                         } else {
1834                                 SCTP_INP_RLOCK(inp);
1835                                 av->assoc_value = inp->sctp_context;
1836                                 SCTP_INP_RUNLOCK(inp);
1837                         }
1838                         *optsize = sizeof(*av);
1839                 }
1840                 break;
1841         case SCTP_VRF_ID:
1842                 {
1843                         uint32_t *default_vrfid;
1844
1845                         SCTP_CHECK_AND_CAST(default_vrfid, optval, uint32_t, *optsize);
1846                         *default_vrfid = inp->def_vrf_id;
1847                         break;
1848                 }
1849         case SCTP_GET_ASOC_VRF:
1850                 {
1851                         struct sctp_assoc_value *id;
1852
1853                         SCTP_CHECK_AND_CAST(id, optval, struct sctp_assoc_value, *optsize);
1854                         SCTP_FIND_STCB(inp, stcb, id->assoc_id);
1855                         if (stcb == NULL) {
1856                                 error = EINVAL;
1857                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
1858                                 break;
1859                         }
1860                         id->assoc_value = stcb->asoc.vrf_id;
1861                         break;
1862                 }
1863         case SCTP_GET_VRF_IDS:
1864                 {
1865                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
1866                         error = EOPNOTSUPP;
1867                         break;
1868                 }
1869         case SCTP_GET_NONCE_VALUES:
1870                 {
1871                         struct sctp_get_nonce_values *gnv;
1872
1873                         SCTP_CHECK_AND_CAST(gnv, optval, struct sctp_get_nonce_values, *optsize);
1874                         SCTP_FIND_STCB(inp, stcb, gnv->gn_assoc_id);
1875
1876                         if (stcb) {
1877                                 gnv->gn_peers_tag = stcb->asoc.peer_vtag;
1878                                 gnv->gn_local_tag = stcb->asoc.my_vtag;
1879                                 SCTP_TCB_UNLOCK(stcb);
1880                         } else {
1881                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
1882                                 error = ENOTCONN;
1883                         }
1884                         *optsize = sizeof(*gnv);
1885                 }
1886                 break;
1887         case SCTP_DELAYED_SACK:
1888                 {
1889                         struct sctp_sack_info *sack;
1890
1891                         SCTP_CHECK_AND_CAST(sack, optval, struct sctp_sack_info, *optsize);
1892                         SCTP_FIND_STCB(inp, stcb, sack->sack_assoc_id);
1893                         if (stcb) {
1894                                 sack->sack_delay = stcb->asoc.delayed_ack;
1895                                 sack->sack_freq = stcb->asoc.sack_freq;
1896                                 SCTP_TCB_UNLOCK(stcb);
1897                         } else {
1898                                 SCTP_INP_RLOCK(inp);
1899                                 sack->sack_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
1900                                 sack->sack_freq = inp->sctp_ep.sctp_sack_freq;
1901                                 SCTP_INP_RUNLOCK(inp);
1902                         }
1903                         *optsize = sizeof(*sack);
1904                 }
1905                 break;
1906
1907         case SCTP_GET_SNDBUF_USE:
1908                 {
1909                         struct sctp_sockstat *ss;
1910
1911                         SCTP_CHECK_AND_CAST(ss, optval, struct sctp_sockstat, *optsize);
1912                         SCTP_FIND_STCB(inp, stcb, ss->ss_assoc_id);
1913
1914                         if (stcb) {
1915                                 ss->ss_total_sndbuf = stcb->asoc.total_output_queue_size;
1916                                 ss->ss_total_recv_buf = (stcb->asoc.size_on_reasm_queue +
1917                                     stcb->asoc.size_on_all_streams);
1918                                 SCTP_TCB_UNLOCK(stcb);
1919                         } else {
1920                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
1921                                 error = ENOTCONN;
1922                         }
1923                         *optsize = sizeof(struct sctp_sockstat);
1924                 }
1925                 break;
1926         case SCTP_MAX_BURST:
1927                 {
1928                         uint8_t *value;
1929
1930                         SCTP_CHECK_AND_CAST(value, optval, uint8_t, *optsize);
1931
1932                         SCTP_INP_RLOCK(inp);
1933                         *value = inp->sctp_ep.max_burst;
1934                         SCTP_INP_RUNLOCK(inp);
1935                         *optsize = sizeof(uint8_t);
1936                 }
1937                 break;
1938         case SCTP_MAXSEG:
1939                 {
1940                         struct sctp_assoc_value *av;
1941                         int ovh;
1942
1943                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1944                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1945
1946                         if (stcb) {
1947                                 av->assoc_value = sctp_get_frag_point(stcb, &stcb->asoc);
1948                                 SCTP_TCB_UNLOCK(stcb);
1949                         } else {
1950                                 SCTP_INP_RLOCK(inp);
1951                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1952                                         ovh = SCTP_MED_OVERHEAD;
1953                                 } else {
1954                                         ovh = SCTP_MED_V4_OVERHEAD;
1955                                 }
1956                                 if (inp->sctp_frag_point >= SCTP_DEFAULT_MAXSEGMENT)
1957                                         av->assoc_value = 0;
1958                                 else
1959                                         av->assoc_value = inp->sctp_frag_point - ovh;
1960                                 SCTP_INP_RUNLOCK(inp);
1961                         }
1962                         *optsize = sizeof(struct sctp_assoc_value);
1963                 }
1964                 break;
1965         case SCTP_GET_STAT_LOG:
1966                 error = sctp_fill_stat_log(optval, optsize);
1967                 break;
1968         case SCTP_EVENTS:
1969                 {
1970                         struct sctp_event_subscribe *events;
1971
1972                         SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, *optsize);
1973                         memset(events, 0, sizeof(*events));
1974                         SCTP_INP_RLOCK(inp);
1975                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT))
1976                                 events->sctp_data_io_event = 1;
1977
1978                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT))
1979                                 events->sctp_association_event = 1;
1980
1981                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT))
1982                                 events->sctp_address_event = 1;
1983
1984                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT))
1985                                 events->sctp_send_failure_event = 1;
1986
1987                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR))
1988                                 events->sctp_peer_error_event = 1;
1989
1990                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT))
1991                                 events->sctp_shutdown_event = 1;
1992
1993                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT))
1994                                 events->sctp_partial_delivery_event = 1;
1995
1996                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT))
1997                                 events->sctp_adaptation_layer_event = 1;
1998
1999                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT))
2000                                 events->sctp_authentication_event = 1;
2001
2002                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_DRYEVNT))
2003                                 events->sctp_sender_dry_event = 1;
2004
2005                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT))
2006                                 events->sctp_stream_reset_event = 1;
2007                         SCTP_INP_RUNLOCK(inp);
2008                         *optsize = sizeof(struct sctp_event_subscribe);
2009                 }
2010                 break;
2011
2012         case SCTP_ADAPTATION_LAYER:
2013                 {
2014                         uint32_t *value;
2015
2016                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
2017
2018                         SCTP_INP_RLOCK(inp);
2019                         *value = inp->sctp_ep.adaptation_layer_indicator;
2020                         SCTP_INP_RUNLOCK(inp);
2021                         *optsize = sizeof(uint32_t);
2022                 }
2023                 break;
2024         case SCTP_SET_INITIAL_DBG_SEQ:
2025                 {
2026                         uint32_t *value;
2027
2028                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
2029                         SCTP_INP_RLOCK(inp);
2030                         *value = inp->sctp_ep.initial_sequence_debug;
2031                         SCTP_INP_RUNLOCK(inp);
2032                         *optsize = sizeof(uint32_t);
2033                 }
2034                 break;
2035         case SCTP_GET_LOCAL_ADDR_SIZE:
2036                 {
2037                         uint32_t *value;
2038
2039                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
2040                         SCTP_INP_RLOCK(inp);
2041                         *value = sctp_count_max_addresses(inp);
2042                         SCTP_INP_RUNLOCK(inp);
2043                         *optsize = sizeof(uint32_t);
2044                 }
2045                 break;
2046         case SCTP_GET_REMOTE_ADDR_SIZE:
2047                 {
2048                         uint32_t *value;
2049                         size_t size;
2050                         struct sctp_nets *net;
2051
2052                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
2053                         /* FIXME MT: change to sctp_assoc_value? */
2054                         SCTP_FIND_STCB(inp, stcb, (sctp_assoc_t) * value);
2055
2056                         if (stcb) {
2057                                 size = 0;
2058                                 /* Count the sizes */
2059                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2060                                         if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) ||
2061                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) {
2062                                                 size += sizeof(struct sockaddr_in6);
2063                                         } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) {
2064                                                 size += sizeof(struct sockaddr_in);
2065                                         } else {
2066                                                 /* huh */
2067                                                 break;
2068                                         }
2069                                 }
2070                                 SCTP_TCB_UNLOCK(stcb);
2071                                 *value = (uint32_t) size;
2072                         } else {
2073                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
2074                                 error = ENOTCONN;
2075                         }
2076                         *optsize = sizeof(uint32_t);
2077                 }
2078                 break;
2079         case SCTP_GET_PEER_ADDRESSES:
2080                 /*
2081                  * Get the address information, an array is passed in to
2082                  * fill up we pack it.
2083                  */
2084                 {
2085                         size_t cpsz, left;
2086                         struct sockaddr_storage *sas;
2087                         struct sctp_nets *net;
2088                         struct sctp_getaddresses *saddr;
2089
2090                         SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize);
2091                         SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id);
2092
2093                         if (stcb) {
2094                                 left = (*optsize) - sizeof(struct sctp_getaddresses);
2095                                 *optsize = sizeof(struct sctp_getaddresses);
2096                                 sas = (struct sockaddr_storage *)&saddr->addr[0];
2097
2098                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2099                                         if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) ||
2100                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) {
2101                                                 cpsz = sizeof(struct sockaddr_in6);
2102                                         } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) {
2103                                                 cpsz = sizeof(struct sockaddr_in);
2104                                         } else {
2105                                                 /* huh */
2106                                                 break;
2107                                         }
2108                                         if (left < cpsz) {
2109                                                 /* not enough room. */
2110                                                 break;
2111                                         }
2112 #ifdef INET6
2113                                         if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) &&
2114                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET)) {
2115                                                 /* Must map the address */
2116                                                 in6_sin_2_v4mapsin6((struct sockaddr_in *)&net->ro._l_addr,
2117                                                     (struct sockaddr_in6 *)sas);
2118                                         } else {
2119 #endif
2120                                                 memcpy(sas, &net->ro._l_addr, cpsz);
2121 #ifdef INET6
2122                                         }
2123 #endif
2124                                         ((struct sockaddr_in *)sas)->sin_port = stcb->rport;
2125
2126                                         sas = (struct sockaddr_storage *)((caddr_t)sas + cpsz);
2127                                         left -= cpsz;
2128                                         *optsize += cpsz;
2129                                 }
2130                                 SCTP_TCB_UNLOCK(stcb);
2131                         } else {
2132                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
2133                                 error = ENOENT;
2134                         }
2135                 }
2136                 break;
2137         case SCTP_GET_LOCAL_ADDRESSES:
2138                 {
2139                         size_t limit, actual;
2140                         struct sockaddr_storage *sas;
2141                         struct sctp_getaddresses *saddr;
2142
2143                         SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize);
2144                         SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id);
2145
2146                         sas = (struct sockaddr_storage *)&saddr->addr[0];
2147                         limit = *optsize - sizeof(sctp_assoc_t);
2148                         actual = sctp_fill_up_addresses(inp, stcb, limit, sas);
2149                         if (stcb) {
2150                                 SCTP_TCB_UNLOCK(stcb);
2151                         }
2152                         *optsize = sizeof(struct sockaddr_storage) + actual;
2153                 }
2154                 break;
2155         case SCTP_PEER_ADDR_PARAMS:
2156                 {
2157                         struct sctp_paddrparams *paddrp;
2158                         struct sctp_nets *net;
2159
2160                         SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, *optsize);
2161                         SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id);
2162
2163                         net = NULL;
2164                         if (stcb) {
2165                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address);
2166                         } else {
2167                                 /*
2168                                  * We increment here since
2169                                  * sctp_findassociation_ep_addr() wil do a
2170                                  * decrement if it finds the stcb as long as
2171                                  * the locked tcb (last argument) is NOT a
2172                                  * TCB.. aka NULL.
2173                                  */
2174                                 SCTP_INP_INCR_REF(inp);
2175                                 stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddrp->spp_address, &net, NULL, NULL);
2176                                 if (stcb == NULL) {
2177                                         SCTP_INP_DECR_REF(inp);
2178                                 }
2179                         }
2180                         if (stcb && (net == NULL)) {
2181                                 struct sockaddr *sa;
2182
2183                                 sa = (struct sockaddr *)&paddrp->spp_address;
2184                                 if (sa->sa_family == AF_INET) {
2185                                         struct sockaddr_in *sin;
2186
2187                                         sin = (struct sockaddr_in *)sa;
2188                                         if (sin->sin_addr.s_addr) {
2189                                                 error = EINVAL;
2190                                                 SCTP_TCB_UNLOCK(stcb);
2191                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2192                                                 break;
2193                                         }
2194                                 } else if (sa->sa_family == AF_INET6) {
2195                                         struct sockaddr_in6 *sin6;
2196
2197                                         sin6 = (struct sockaddr_in6 *)sa;
2198                                         if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2199                                                 error = EINVAL;
2200                                                 SCTP_TCB_UNLOCK(stcb);
2201                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2202                                                 break;
2203                                         }
2204                                 } else {
2205                                         error = EAFNOSUPPORT;
2206                                         SCTP_TCB_UNLOCK(stcb);
2207                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2208                                         break;
2209                                 }
2210                         }
2211                         if (stcb) {
2212                                 /* Applys to the specific association */
2213                                 paddrp->spp_flags = 0;
2214                                 if (net) {
2215                                         int ovh;
2216
2217                                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2218                                                 ovh = SCTP_MED_OVERHEAD;
2219                                         } else {
2220                                                 ovh = SCTP_MED_V4_OVERHEAD;
2221                                         }
2222
2223
2224                                         paddrp->spp_pathmaxrxt = net->failure_threshold;
2225                                         paddrp->spp_pathmtu = net->mtu - ovh;
2226                                         /* get flags for HB */
2227                                         if (net->dest_state & SCTP_ADDR_NOHB)
2228                                                 paddrp->spp_flags |= SPP_HB_DISABLE;
2229                                         else
2230                                                 paddrp->spp_flags |= SPP_HB_ENABLE;
2231                                         /* get flags for PMTU */
2232                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
2233                                                 paddrp->spp_flags |= SPP_PMTUD_ENABLE;
2234                                         } else {
2235                                                 paddrp->spp_flags |= SPP_PMTUD_DISABLE;
2236                                         }
2237 #ifdef INET
2238                                         if (net->ro._l_addr.sin.sin_family == AF_INET) {
2239                                                 paddrp->spp_ipv4_tos = net->tos_flowlabel & 0x000000fc;
2240                                                 paddrp->spp_flags |= SPP_IPV4_TOS;
2241                                         }
2242 #endif
2243 #ifdef INET6
2244                                         if (net->ro._l_addr.sin6.sin6_family == AF_INET6) {
2245                                                 paddrp->spp_ipv6_flowlabel = net->tos_flowlabel;
2246                                                 paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
2247                                         }
2248 #endif
2249                                 } else {
2250                                         /*
2251                                          * No destination so return default
2252                                          * value
2253                                          */
2254                                         int cnt = 0;
2255
2256                                         paddrp->spp_pathmaxrxt = stcb->asoc.def_net_failure;
2257                                         paddrp->spp_pathmtu = sctp_get_frag_point(stcb, &stcb->asoc);
2258 #ifdef INET
2259                                         paddrp->spp_ipv4_tos = stcb->asoc.default_tos & 0x000000fc;
2260                                         paddrp->spp_flags |= SPP_IPV4_TOS;
2261 #endif
2262 #ifdef INET6
2263                                         paddrp->spp_ipv6_flowlabel = stcb->asoc.default_flowlabel;
2264                                         paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
2265 #endif
2266                                         /* default settings should be these */
2267                                         if (stcb->asoc.hb_is_disabled == 0) {
2268                                                 paddrp->spp_flags |= SPP_HB_ENABLE;
2269                                         } else {
2270                                                 paddrp->spp_flags |= SPP_HB_DISABLE;
2271                                         }
2272                                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2273                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
2274                                                         cnt++;
2275                                                 }
2276                                         }
2277                                         if (cnt) {
2278                                                 paddrp->spp_flags |= SPP_PMTUD_ENABLE;
2279                                         }
2280                                 }
2281                                 paddrp->spp_hbinterval = stcb->asoc.heart_beat_delay;
2282                                 paddrp->spp_assoc_id = sctp_get_associd(stcb);
2283                                 SCTP_TCB_UNLOCK(stcb);
2284                         } else {
2285                                 /* Use endpoint defaults */
2286                                 SCTP_INP_RLOCK(inp);
2287                                 paddrp->spp_pathmaxrxt = inp->sctp_ep.def_net_failure;
2288                                 paddrp->spp_hbinterval = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
2289                                 paddrp->spp_assoc_id = (sctp_assoc_t) 0;
2290                                 /* get inp's default */
2291 #ifdef INET
2292                                 paddrp->spp_ipv4_tos = inp->ip_inp.inp.inp_ip_tos;
2293                                 paddrp->spp_flags |= SPP_IPV4_TOS;
2294 #endif
2295 #ifdef INET6
2296                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2297                                         paddrp->spp_ipv6_flowlabel = ((struct in6pcb *)inp)->in6p_flowinfo;
2298                                         paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
2299                                 }
2300 #endif
2301                                 /* can't return this */
2302                                 paddrp->spp_pathmtu = 0;
2303
2304                                 /* default behavior, no stcb */
2305                                 paddrp->spp_flags = SPP_PMTUD_ENABLE;
2306
2307                                 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
2308                                         paddrp->spp_flags |= SPP_HB_ENABLE;
2309                                 } else {
2310                                         paddrp->spp_flags |= SPP_HB_DISABLE;
2311                                 }
2312                                 SCTP_INP_RUNLOCK(inp);
2313                         }
2314                         *optsize = sizeof(struct sctp_paddrparams);
2315                 }
2316                 break;
2317         case SCTP_GET_PEER_ADDR_INFO:
2318                 {
2319                         struct sctp_paddrinfo *paddri;
2320                         struct sctp_nets *net;
2321
2322                         SCTP_CHECK_AND_CAST(paddri, optval, struct sctp_paddrinfo, *optsize);
2323                         SCTP_FIND_STCB(inp, stcb, paddri->spinfo_assoc_id);
2324
2325                         net = NULL;
2326                         if (stcb) {
2327                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddri->spinfo_address);
2328                         } else {
2329                                 /*
2330                                  * We increment here since
2331                                  * sctp_findassociation_ep_addr() wil do a
2332                                  * decrement if it finds the stcb as long as
2333                                  * the locked tcb (last argument) is NOT a
2334                                  * TCB.. aka NULL.
2335                                  */
2336                                 SCTP_INP_INCR_REF(inp);
2337                                 stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddri->spinfo_address, &net, NULL, NULL);
2338                                 if (stcb == NULL) {
2339                                         SCTP_INP_DECR_REF(inp);
2340                                 }
2341                         }
2342
2343                         if ((stcb) && (net)) {
2344                                 paddri->spinfo_state = net->dest_state & (SCTP_REACHABLE_MASK | SCTP_ADDR_NOHB);
2345                                 paddri->spinfo_cwnd = net->cwnd;
2346                                 paddri->spinfo_srtt = ((net->lastsa >> 2) + net->lastsv) >> 1;
2347                                 paddri->spinfo_rto = net->RTO;
2348                                 paddri->spinfo_assoc_id = sctp_get_associd(stcb);
2349                                 SCTP_TCB_UNLOCK(stcb);
2350                         } else {
2351                                 if (stcb) {
2352                                         SCTP_TCB_UNLOCK(stcb);
2353                                 }
2354                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
2355                                 error = ENOENT;
2356                         }
2357                         *optsize = sizeof(struct sctp_paddrinfo);
2358                 }
2359                 break;
2360         case SCTP_PCB_STATUS:
2361                 {
2362                         struct sctp_pcbinfo *spcb;
2363
2364                         SCTP_CHECK_AND_CAST(spcb, optval, struct sctp_pcbinfo, *optsize);
2365                         sctp_fill_pcbinfo(spcb);
2366                         *optsize = sizeof(struct sctp_pcbinfo);
2367                 }
2368                 break;
2369
2370         case SCTP_STATUS:
2371                 {
2372                         struct sctp_nets *net;
2373                         struct sctp_status *sstat;
2374
2375                         SCTP_CHECK_AND_CAST(sstat, optval, struct sctp_status, *optsize);
2376                         SCTP_FIND_STCB(inp, stcb, sstat->sstat_assoc_id);
2377
2378                         if (stcb == NULL) {
2379                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2380                                 error = EINVAL;
2381                                 break;
2382                         }
2383                         /*
2384                          * I think passing the state is fine since
2385                          * sctp_constants.h will be available to the user
2386                          * land.
2387                          */
2388                         sstat->sstat_state = stcb->asoc.state;
2389                         sstat->sstat_assoc_id = sctp_get_associd(stcb);
2390                         sstat->sstat_rwnd = stcb->asoc.peers_rwnd;
2391                         sstat->sstat_unackdata = stcb->asoc.sent_queue_cnt;
2392                         /*
2393                          * We can't include chunks that have been passed to
2394                          * the socket layer. Only things in queue.
2395                          */
2396                         sstat->sstat_penddata = (stcb->asoc.cnt_on_reasm_queue +
2397                             stcb->asoc.cnt_on_all_streams);
2398
2399
2400                         sstat->sstat_instrms = stcb->asoc.streamincnt;
2401                         sstat->sstat_outstrms = stcb->asoc.streamoutcnt;
2402                         sstat->sstat_fragmentation_point = sctp_get_frag_point(stcb, &stcb->asoc);
2403                         memcpy(&sstat->sstat_primary.spinfo_address,
2404                             &stcb->asoc.primary_destination->ro._l_addr,
2405                             ((struct sockaddr *)(&stcb->asoc.primary_destination->ro._l_addr))->sa_len);
2406                         net = stcb->asoc.primary_destination;
2407                         ((struct sockaddr_in *)&sstat->sstat_primary.spinfo_address)->sin_port = stcb->rport;
2408                         /*
2409                          * Again the user can get info from sctp_constants.h
2410                          * for what the state of the network is.
2411                          */
2412                         sstat->sstat_primary.spinfo_state = net->dest_state & SCTP_REACHABLE_MASK;
2413                         sstat->sstat_primary.spinfo_cwnd = net->cwnd;
2414                         sstat->sstat_primary.spinfo_srtt = net->lastsa;
2415                         sstat->sstat_primary.spinfo_rto = net->RTO;
2416                         sstat->sstat_primary.spinfo_mtu = net->mtu;
2417                         sstat->sstat_primary.spinfo_assoc_id = sctp_get_associd(stcb);
2418                         SCTP_TCB_UNLOCK(stcb);
2419                         *optsize = sizeof(*sstat);
2420                 }
2421                 break;
2422         case SCTP_RTOINFO:
2423                 {
2424                         struct sctp_rtoinfo *srto;
2425
2426                         SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, *optsize);
2427                         SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id);
2428
2429                         if (stcb) {
2430                                 srto->srto_initial = stcb->asoc.initial_rto;
2431                                 srto->srto_max = stcb->asoc.maxrto;
2432                                 srto->srto_min = stcb->asoc.minrto;
2433                                 SCTP_TCB_UNLOCK(stcb);
2434                         } else {
2435                                 SCTP_INP_RLOCK(inp);
2436                                 srto->srto_initial = inp->sctp_ep.initial_rto;
2437                                 srto->srto_max = inp->sctp_ep.sctp_maxrto;
2438                                 srto->srto_min = inp->sctp_ep.sctp_minrto;
2439                                 SCTP_INP_RUNLOCK(inp);
2440                         }
2441                         *optsize = sizeof(*srto);
2442                 }
2443                 break;
2444         case SCTP_TIMEOUTS:
2445                 {
2446                         struct sctp_timeouts *stimo;
2447
2448                         SCTP_CHECK_AND_CAST(stimo, optval, struct sctp_timeouts, *optsize);
2449                         SCTP_FIND_STCB(inp, stcb, stimo->stimo_assoc_id);
2450
2451                         if (stcb) {
2452                                 stimo->stimo_init = stcb->asoc.timoinit;
2453                                 stimo->stimo_data = stcb->asoc.timodata;
2454                                 stimo->stimo_sack = stcb->asoc.timosack;
2455                                 stimo->stimo_shutdown = stcb->asoc.timoshutdown;
2456                                 stimo->stimo_heartbeat = stcb->asoc.timoheartbeat;
2457                                 stimo->stimo_cookie = stcb->asoc.timocookie;
2458                                 stimo->stimo_shutdownack = stcb->asoc.timoshutdownack;
2459                                 SCTP_TCB_UNLOCK(stcb);
2460                         } else {
2461                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2462                                 error = EINVAL;
2463                         }
2464                         *optsize = sizeof(*stimo);
2465                 }
2466                 break;
2467         case SCTP_ASSOCINFO:
2468                 {
2469                         struct sctp_assocparams *sasoc;
2470                         uint32_t oldval;
2471
2472                         SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, *optsize);
2473                         SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id);
2474
2475                         if (stcb) {
2476                                 oldval = sasoc->sasoc_cookie_life;
2477                                 sasoc->sasoc_cookie_life = TICKS_TO_MSEC(stcb->asoc.cookie_life);
2478                                 sasoc->sasoc_asocmaxrxt = stcb->asoc.max_send_times;
2479                                 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets;
2480                                 sasoc->sasoc_peer_rwnd = stcb->asoc.peers_rwnd;
2481                                 sasoc->sasoc_local_rwnd = stcb->asoc.my_rwnd;
2482                                 SCTP_TCB_UNLOCK(stcb);
2483                         } else {
2484                                 SCTP_INP_RLOCK(inp);
2485                                 sasoc->sasoc_cookie_life = TICKS_TO_MSEC(inp->sctp_ep.def_cookie_life);
2486                                 sasoc->sasoc_asocmaxrxt = inp->sctp_ep.max_send_times;
2487                                 sasoc->sasoc_number_peer_destinations = 0;
2488                                 sasoc->sasoc_peer_rwnd = 0;
2489                                 sasoc->sasoc_local_rwnd = sbspace(&inp->sctp_socket->so_rcv);
2490                                 SCTP_INP_RUNLOCK(inp);
2491                         }
2492                         *optsize = sizeof(*sasoc);
2493                 }
2494                 break;
2495         case SCTP_DEFAULT_SEND_PARAM:
2496                 {
2497                         struct sctp_sndrcvinfo *s_info;
2498
2499                         SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, *optsize);
2500                         SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id);
2501
2502                         if (stcb) {
2503                                 memcpy(s_info, &stcb->asoc.def_send, sizeof(stcb->asoc.def_send));
2504                                 SCTP_TCB_UNLOCK(stcb);
2505                         } else {
2506                                 SCTP_INP_RLOCK(inp);
2507                                 memcpy(s_info, &inp->def_send, sizeof(inp->def_send));
2508                                 SCTP_INP_RUNLOCK(inp);
2509                         }
2510                         *optsize = sizeof(*s_info);
2511                 }
2512                 break;
2513         case SCTP_INITMSG:
2514                 {
2515                         struct sctp_initmsg *sinit;
2516
2517                         SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, *optsize);
2518                         SCTP_INP_RLOCK(inp);
2519                         sinit->sinit_num_ostreams = inp->sctp_ep.pre_open_stream_count;
2520                         sinit->sinit_max_instreams = inp->sctp_ep.max_open_streams_intome;
2521                         sinit->sinit_max_attempts = inp->sctp_ep.max_init_times;
2522                         sinit->sinit_max_init_timeo = inp->sctp_ep.initial_init_rto_max;
2523                         SCTP_INP_RUNLOCK(inp);
2524                         *optsize = sizeof(*sinit);
2525                 }
2526                 break;
2527         case SCTP_PRIMARY_ADDR:
2528                 /* we allow a "get" operation on this */
2529                 {
2530                         struct sctp_setprim *ssp;
2531
2532                         SCTP_CHECK_AND_CAST(ssp, optval, struct sctp_setprim, *optsize);
2533                         SCTP_FIND_STCB(inp, stcb, ssp->ssp_assoc_id);
2534
2535                         if (stcb) {
2536                                 /* simply copy out the sockaddr_storage... */
2537                                 int len;
2538
2539                                 len = *optsize;
2540                                 if (len > stcb->asoc.primary_destination->ro._l_addr.sa.sa_len)
2541                                         len = stcb->asoc.primary_destination->ro._l_addr.sa.sa_len;
2542
2543                                 memcpy(&ssp->ssp_addr,
2544                                     &stcb->asoc.primary_destination->ro._l_addr,
2545                                     len);
2546                                 SCTP_TCB_UNLOCK(stcb);
2547                         } else {
2548                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2549                                 error = EINVAL;
2550                         }
2551                         *optsize = sizeof(*ssp);
2552                 }
2553                 break;
2554
2555         case SCTP_HMAC_IDENT:
2556                 {
2557                         struct sctp_hmacalgo *shmac;
2558                         sctp_hmaclist_t *hmaclist;
2559                         uint32_t size;
2560                         int i;
2561
2562                         SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, *optsize);
2563
2564                         SCTP_INP_RLOCK(inp);
2565                         hmaclist = inp->sctp_ep.local_hmacs;
2566                         if (hmaclist == NULL) {
2567                                 /* no HMACs to return */
2568                                 *optsize = sizeof(*shmac);
2569                                 SCTP_INP_RUNLOCK(inp);
2570                                 break;
2571                         }
2572                         /* is there room for all of the hmac ids? */
2573                         size = sizeof(*shmac) + (hmaclist->num_algo *
2574                             sizeof(shmac->shmac_idents[0]));
2575                         if ((size_t)(*optsize) < size) {
2576                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2577                                 error = EINVAL;
2578                                 SCTP_INP_RUNLOCK(inp);
2579                                 break;
2580                         }
2581                         /* copy in the list */
2582                         shmac->shmac_number_of_idents = hmaclist->num_algo;
2583                         for (i = 0; i < hmaclist->num_algo; i++) {
2584                                 shmac->shmac_idents[i] = hmaclist->hmac[i];
2585                         }
2586                         SCTP_INP_RUNLOCK(inp);
2587                         *optsize = size;
2588                         break;
2589                 }
2590         case SCTP_AUTH_ACTIVE_KEY:
2591                 {
2592                         struct sctp_authkeyid *scact;
2593
2594                         SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, *optsize);
2595                         SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id);
2596
2597                         if (stcb) {
2598                                 /* get the active key on the assoc */
2599                                 scact->scact_keynumber = stcb->asoc.authinfo.active_keyid;
2600                                 SCTP_TCB_UNLOCK(stcb);
2601                         } else {
2602                                 /* get the endpoint active key */
2603                                 SCTP_INP_RLOCK(inp);
2604                                 scact->scact_keynumber = inp->sctp_ep.default_keyid;
2605                                 SCTP_INP_RUNLOCK(inp);
2606                         }
2607                         *optsize = sizeof(*scact);
2608                         break;
2609                 }
2610         case SCTP_LOCAL_AUTH_CHUNKS:
2611                 {
2612                         struct sctp_authchunks *sac;
2613                         sctp_auth_chklist_t *chklist = NULL;
2614                         size_t size = 0;
2615
2616                         SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize);
2617                         SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id);
2618
2619                         if (stcb) {
2620                                 /* get off the assoc */
2621                                 chklist = stcb->asoc.local_auth_chunks;
2622                                 /* is there enough space? */
2623                                 size = sctp_auth_get_chklist_size(chklist);
2624                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2625                                         error = EINVAL;
2626                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2627                                 } else {
2628                                         /* copy in the chunks */
2629                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2630                                 }
2631                                 SCTP_TCB_UNLOCK(stcb);
2632                         } else {
2633                                 /* get off the endpoint */
2634                                 SCTP_INP_RLOCK(inp);
2635                                 chklist = inp->sctp_ep.local_auth_chunks;
2636                                 /* is there enough space? */
2637                                 size = sctp_auth_get_chklist_size(chklist);
2638                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2639                                         error = EINVAL;
2640                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2641                                 } else {
2642                                         /* copy in the chunks */
2643                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2644                                 }
2645                                 SCTP_INP_RUNLOCK(inp);
2646                         }
2647                         *optsize = sizeof(struct sctp_authchunks) + size;
2648                         break;
2649                 }
2650         case SCTP_PEER_AUTH_CHUNKS:
2651                 {
2652                         struct sctp_authchunks *sac;
2653                         sctp_auth_chklist_t *chklist = NULL;
2654                         size_t size = 0;
2655
2656                         SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize);
2657                         SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id);
2658
2659                         if (stcb) {
2660                                 /* get off the assoc */
2661                                 chklist = stcb->asoc.peer_auth_chunks;
2662                                 /* is there enough space? */
2663                                 size = sctp_auth_get_chklist_size(chklist);
2664                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2665                                         error = EINVAL;
2666                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2667                                 } else {
2668                                         /* copy in the chunks */
2669                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2670                                 }
2671                                 SCTP_TCB_UNLOCK(stcb);
2672                         } else {
2673                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
2674                                 error = ENOENT;
2675                         }
2676                         *optsize = sizeof(struct sctp_authchunks) + size;
2677                         break;
2678                 }
2679
2680
2681         default:
2682                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
2683                 error = ENOPROTOOPT;
2684                 *optsize = 0;
2685                 break;
2686         }                       /* end switch (sopt->sopt_name) */
2687         return (error);
2688 }
2689
2690 static int
2691 sctp_setopt(struct socket *so, int optname, void *optval, size_t optsize,
2692     void *p)
2693 {
2694         int error, set_opt;
2695         uint32_t *mopt;
2696         struct sctp_tcb *stcb = NULL;
2697         struct sctp_inpcb *inp = NULL;
2698         uint32_t vrf_id;
2699
2700         if (optval == NULL) {
2701                 SCTP_PRINTF("optval is NULL\n");
2702                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2703                 return (EINVAL);
2704         }
2705         inp = (struct sctp_inpcb *)so->so_pcb;
2706         if (inp == 0) {
2707                 SCTP_PRINTF("inp is NULL?\n");
2708                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2709                 return EINVAL;
2710         }
2711         vrf_id = inp->def_vrf_id;
2712
2713         error = 0;
2714         switch (optname) {
2715         case SCTP_NODELAY:
2716         case SCTP_AUTOCLOSE:
2717         case SCTP_AUTO_ASCONF:
2718         case SCTP_EXPLICIT_EOR:
2719         case SCTP_DISABLE_FRAGMENTS:
2720         case SCTP_USE_EXT_RCVINFO:
2721         case SCTP_I_WANT_MAPPED_V4_ADDR:
2722                 /* copy in the option value */
2723                 SCTP_CHECK_AND_CAST(mopt, optval, uint32_t, optsize);
2724                 set_opt = 0;
2725                 if (error)
2726                         break;
2727                 switch (optname) {
2728                 case SCTP_DISABLE_FRAGMENTS:
2729                         set_opt = SCTP_PCB_FLAGS_NO_FRAGMENT;
2730                         break;
2731                 case SCTP_AUTO_ASCONF:
2732                         /*
2733                          * NOTE: we don't really support this flag
2734                          */
2735                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
2736                                 /* only valid for bound all sockets */
2737                                 set_opt = SCTP_PCB_FLAGS_AUTO_ASCONF;
2738                         } else {
2739                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2740                                 return (EINVAL);
2741                         }
2742                         break;
2743                 case SCTP_EXPLICIT_EOR:
2744                         set_opt = SCTP_PCB_FLAGS_EXPLICIT_EOR;
2745                         break;
2746                 case SCTP_USE_EXT_RCVINFO:
2747                         set_opt = SCTP_PCB_FLAGS_EXT_RCVINFO;
2748                         break;
2749                 case SCTP_I_WANT_MAPPED_V4_ADDR:
2750                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2751                                 set_opt = SCTP_PCB_FLAGS_NEEDS_MAPPED_V4;
2752                         } else {
2753                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2754                                 return (EINVAL);
2755                         }
2756                         break;
2757                 case SCTP_NODELAY:
2758                         set_opt = SCTP_PCB_FLAGS_NODELAY;
2759                         break;
2760                 case SCTP_AUTOCLOSE:
2761                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2762                             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
2763                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2764                                 return (EINVAL);
2765                         }
2766                         set_opt = SCTP_PCB_FLAGS_AUTOCLOSE;
2767                         /*
2768                          * The value is in ticks. Note this does not effect
2769                          * old associations, only new ones.
2770                          */
2771                         inp->sctp_ep.auto_close_time = SEC_TO_TICKS(*mopt);
2772                         break;
2773                 }
2774                 SCTP_INP_WLOCK(inp);
2775                 if (*mopt != 0) {
2776                         sctp_feature_on(inp, set_opt);
2777                 } else {
2778                         sctp_feature_off(inp, set_opt);
2779                 }
2780                 SCTP_INP_WUNLOCK(inp);
2781                 break;
2782         case SCTP_REUSE_PORT:
2783                 {
2784                         SCTP_CHECK_AND_CAST(mopt, optval, uint32_t, optsize);
2785                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
2786                                 /* Can't set it after we are bound */
2787                                 error = EINVAL;
2788                                 break;
2789                         }
2790                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE)) {
2791                                 /* Can't do this for a 1-m socket */
2792                                 error = EINVAL;
2793                                 break;
2794                         }
2795                         if (optval)
2796                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE);
2797                         else
2798                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE);
2799                 }
2800                 break;
2801         case SCTP_PARTIAL_DELIVERY_POINT:
2802                 {
2803                         uint32_t *value;
2804
2805                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, optsize);
2806                         if (*value > SCTP_SB_LIMIT_RCV(so)) {
2807                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2808                                 error = EINVAL;
2809                                 break;
2810                         }
2811                         inp->partial_delivery_point = *value;
2812                 }
2813                 break;
2814         case SCTP_FRAGMENT_INTERLEAVE:
2815                 /* not yet until we re-write sctp_recvmsg() */
2816                 {
2817                         uint32_t *level;
2818
2819                         SCTP_CHECK_AND_CAST(level, optval, uint32_t, optsize);
2820                         if (*level == SCTP_FRAG_LEVEL_2) {
2821                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2822                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2823                         } else if (*level == SCTP_FRAG_LEVEL_1) {
2824                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2825                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2826                         } else if (*level == SCTP_FRAG_LEVEL_0) {
2827                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2828                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2829
2830                         } else {
2831                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2832                                 error = EINVAL;
2833                         }
2834                 }
2835                 break;
2836         case SCTP_CMT_ON_OFF:
2837                 if (SCTP_BASE_SYSCTL(sctp_cmt_on_off)) {
2838                         struct sctp_assoc_value *av;
2839
2840                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2841                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2842                         if (stcb) {
2843                                 if (av->assoc_value != 0)
2844                                         stcb->asoc.sctp_cmt_on_off = 1;
2845                                 else
2846                                         stcb->asoc.sctp_cmt_on_off = 0;
2847                                 SCTP_TCB_UNLOCK(stcb);
2848                         } else {
2849                                 SCTP_INP_WLOCK(inp);
2850                                 if (av->assoc_value != 0)
2851                                         inp->sctp_cmt_on_off = 1;
2852                                 else
2853                                         inp->sctp_cmt_on_off = 0;
2854                                 SCTP_INP_WUNLOCK(inp);
2855                         }
2856                 } else {
2857                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
2858                         error = ENOPROTOOPT;
2859                 }
2860                 break;
2861                 /* JRS - Set socket option for pluggable congestion control */
2862         case SCTP_PLUGGABLE_CC:
2863                 {
2864                         struct sctp_assoc_value *av;
2865
2866                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2867                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2868                         if (stcb) {
2869                                 switch (av->assoc_value) {
2870                                         /*
2871                                          * JRS - Standard TCP congestion
2872                                          * control
2873                                          */
2874                                 case SCTP_CC_RFC2581:
2875                                         {
2876                                                 stcb->asoc.congestion_control_module = SCTP_CC_RFC2581;
2877                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_set_initial_cc_param;
2878                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_cwnd_update_after_sack;
2879                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_cwnd_update_after_fr;
2880                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_cwnd_update_after_timeout;
2881                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_cwnd_update_after_ecn_echo;
2882                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
2883                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
2884                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_cwnd_update_after_fr_timer;
2885                                                 SCTP_TCB_UNLOCK(stcb);
2886                                                 break;
2887                                         }
2888                                         /*
2889                                          * JRS - High Speed TCP congestion
2890                                          * control (Floyd)
2891                                          */
2892                                 case SCTP_CC_HSTCP:
2893                                         {
2894                                                 stcb->asoc.congestion_control_module = SCTP_CC_HSTCP;
2895                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_set_initial_cc_param;
2896                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_hs_cwnd_update_after_sack;
2897                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_hs_cwnd_update_after_fr;
2898                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_cwnd_update_after_timeout;
2899                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_cwnd_update_after_ecn_echo;
2900                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
2901                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
2902                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_cwnd_update_after_fr_timer;
2903                                                 SCTP_TCB_UNLOCK(stcb);
2904                                                 break;
2905                                         }
2906                                         /* JRS - HTCP congestion control */
2907                                 case SCTP_CC_HTCP:
2908                                         {
2909                                                 stcb->asoc.congestion_control_module = SCTP_CC_HTCP;
2910                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_htcp_set_initial_cc_param;
2911                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_htcp_cwnd_update_after_sack;
2912                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_htcp_cwnd_update_after_fr;
2913                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_htcp_cwnd_update_after_timeout;
2914                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_htcp_cwnd_update_after_ecn_echo;
2915                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
2916                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
2917                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_htcp_cwnd_update_after_fr_timer;
2918                                                 SCTP_TCB_UNLOCK(stcb);
2919                                                 break;
2920                                         }
2921                                         /*
2922                                          * JRS - All other values are
2923                                          * invalid
2924                                          */
2925                                 default:
2926                                         {
2927                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2928                                                 error = EINVAL;
2929                                                 SCTP_TCB_UNLOCK(stcb);
2930                                                 break;
2931                                         }
2932                                 }
2933                         } else {
2934                                 switch (av->assoc_value) {
2935                                 case SCTP_CC_RFC2581:
2936                                 case SCTP_CC_HSTCP:
2937                                 case SCTP_CC_HTCP:
2938                                         inp->sctp_ep.sctp_default_cc_module = av->assoc_value;
2939                                         break;
2940                                 default:
2941                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2942                                         error = EINVAL;
2943                                         break;
2944                                 };
2945                         }
2946                 }
2947                 break;
2948         case SCTP_CLR_STAT_LOG:
2949                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
2950                 error = EOPNOTSUPP;
2951                 break;
2952         case SCTP_CONTEXT:
2953                 {
2954                         struct sctp_assoc_value *av;
2955
2956                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2957                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2958
2959                         if (stcb) {
2960                                 stcb->asoc.context = av->assoc_value;
2961                                 SCTP_TCB_UNLOCK(stcb);
2962                         } else {
2963                                 SCTP_INP_WLOCK(inp);
2964                                 inp->sctp_context = av->assoc_value;
2965                                 SCTP_INP_WUNLOCK(inp);
2966                         }
2967                 }
2968                 break;
2969         case SCTP_VRF_ID:
2970                 {
2971                         uint32_t *default_vrfid;
2972
2973                         SCTP_CHECK_AND_CAST(default_vrfid, optval, uint32_t, optsize);
2974                         if (*default_vrfid > SCTP_MAX_VRF_ID) {
2975                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2976                                 error = EINVAL;
2977                                 break;
2978                         }
2979                         inp->def_vrf_id = *default_vrfid;
2980                         break;
2981                 }
2982         case SCTP_DEL_VRF_ID:
2983                 {
2984                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
2985                         error = EOPNOTSUPP;
2986                         break;
2987                 }
2988         case SCTP_ADD_VRF_ID:
2989                 {
2990                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
2991                         error = EOPNOTSUPP;
2992                         break;
2993                 }
2994         case SCTP_DELAYED_SACK:
2995                 {
2996                         struct sctp_sack_info *sack;
2997
2998                         SCTP_CHECK_AND_CAST(sack, optval, struct sctp_sack_info, optsize);
2999                         SCTP_FIND_STCB(inp, stcb, sack->sack_assoc_id);
3000                         if (sack->sack_delay) {
3001                                 if (sack->sack_delay > SCTP_MAX_SACK_DELAY)
3002                                         sack->sack_delay = SCTP_MAX_SACK_DELAY;
3003                         }
3004                         if (stcb) {
3005                                 if (sack->sack_delay) {
3006                                         if (MSEC_TO_TICKS(sack->sack_delay) < 1) {
3007                                                 sack->sack_delay = TICKS_TO_MSEC(1);
3008                                         }
3009                                         stcb->asoc.delayed_ack = sack->sack_delay;
3010                                 }
3011                                 if (sack->sack_freq) {
3012                                         stcb->asoc.sack_freq = sack->sack_freq;
3013                                 }
3014                                 SCTP_TCB_UNLOCK(stcb);
3015                         } else {
3016                                 SCTP_INP_WLOCK(inp);
3017                                 if (sack->sack_delay) {
3018                                         if (MSEC_TO_TICKS(sack->sack_delay) < 1) {
3019                                                 sack->sack_delay = TICKS_TO_MSEC(1);
3020                                         }
3021                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(sack->sack_delay);
3022                                 }
3023                                 if (sack->sack_freq) {
3024                                         inp->sctp_ep.sctp_sack_freq = sack->sack_freq;
3025                                 }
3026                                 SCTP_INP_WUNLOCK(inp);
3027                         }
3028                         break;
3029                 }
3030         case SCTP_AUTH_CHUNK:
3031                 {
3032                         struct sctp_authchunk *sauth;
3033
3034                         SCTP_CHECK_AND_CAST(sauth, optval, struct sctp_authchunk, optsize);
3035
3036                         SCTP_INP_WLOCK(inp);
3037                         if (sctp_auth_add_chunk(sauth->sauth_chunk, inp->sctp_ep.local_auth_chunks)) {
3038                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3039                                 error = EINVAL;
3040                         }
3041                         SCTP_INP_WUNLOCK(inp);
3042                         break;
3043                 }
3044         case SCTP_AUTH_KEY:
3045                 {
3046                         struct sctp_authkey *sca;
3047                         struct sctp_keyhead *shared_keys;
3048                         sctp_sharedkey_t *shared_key;
3049                         sctp_key_t *key = NULL;
3050                         size_t size;
3051
3052                         SCTP_CHECK_AND_CAST(sca, optval, struct sctp_authkey, optsize);
3053                         SCTP_FIND_STCB(inp, stcb, sca->sca_assoc_id);
3054                         size = optsize - sizeof(*sca);
3055
3056                         if (stcb) {
3057                                 /* set it on the assoc */
3058                                 shared_keys = &stcb->asoc.shared_keys;
3059                                 /* clear the cached keys for this key id */
3060                                 sctp_clear_cachedkeys(stcb, sca->sca_keynumber);
3061                                 /*
3062                                  * create the new shared key and
3063                                  * insert/replace it
3064                                  */
3065                                 if (size > 0) {
3066                                         key = sctp_set_key(sca->sca_key, (uint32_t) size);
3067                                         if (key == NULL) {
3068                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
3069                                                 error = ENOMEM;
3070                                                 SCTP_TCB_UNLOCK(stcb);
3071                                                 break;
3072                                         }
3073                                 }
3074                                 shared_key = sctp_alloc_sharedkey();
3075                                 if (shared_key == NULL) {
3076                                         sctp_free_key(key);
3077                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
3078                                         error = ENOMEM;
3079                                         SCTP_TCB_UNLOCK(stcb);
3080                                         break;
3081                                 }
3082                                 shared_key->key = key;
3083                                 shared_key->keyid = sca->sca_keynumber;
3084                                 error = sctp_insert_sharedkey(shared_keys, shared_key);
3085                                 SCTP_TCB_UNLOCK(stcb);
3086                         } else {
3087                                 /* set it on the endpoint */
3088                                 SCTP_INP_WLOCK(inp);
3089                                 shared_keys = &inp->sctp_ep.shared_keys;
3090                                 /*
3091                                  * clear the cached keys on all assocs for
3092                                  * this key id
3093                                  */
3094                                 sctp_clear_cachedkeys_ep(inp, sca->sca_keynumber);
3095                                 /*
3096                                  * create the new shared key and
3097                                  * insert/replace it
3098                                  */
3099                                 if (size > 0) {
3100                                         key = sctp_set_key(sca->sca_key, (uint32_t) size);
3101                                         if (key == NULL) {
3102                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
3103                                                 error = ENOMEM;
3104                                                 SCTP_INP_WUNLOCK(inp);
3105                                                 break;
3106                                         }
3107                                 }
3108                                 shared_key = sctp_alloc_sharedkey();
3109                                 if (shared_key == NULL) {
3110                                         sctp_free_key(key);
3111                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
3112                                         error = ENOMEM;
3113                                         SCTP_INP_WUNLOCK(inp);
3114                                         break;
3115                                 }
3116                                 shared_key->key = key;
3117                                 shared_key->keyid = sca->sca_keynumber;
3118                                 error = sctp_insert_sharedkey(shared_keys, shared_key);
3119                                 SCTP_INP_WUNLOCK(inp);
3120                         }
3121                         break;
3122                 }
3123         case SCTP_HMAC_IDENT:
3124                 {
3125                         struct sctp_hmacalgo *shmac;
3126                         sctp_hmaclist_t *hmaclist;
3127                         uint16_t hmacid;
3128                         uint32_t i;
3129
3130                         size_t found;
3131
3132                         SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, optsize);
3133                         if (optsize < sizeof(struct sctp_hmacalgo) + shmac->shmac_number_of_idents * sizeof(uint16_t)) {
3134                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3135                                 error = EINVAL;
3136                                 break;
3137                         }
3138                         hmaclist = sctp_alloc_hmaclist(shmac->shmac_number_of_idents);
3139                         if (hmaclist == NULL) {
3140                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
3141                                 error = ENOMEM;
3142                                 break;
3143                         }
3144                         for (i = 0; i < shmac->shmac_number_of_idents; i++) {
3145                                 hmacid = shmac->shmac_idents[i];
3146                                 if (sctp_auth_add_hmacid(hmaclist, hmacid)) {
3147                                          /* invalid HMACs were found */ ;
3148                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3149                                         error = EINVAL;
3150                                         sctp_free_hmaclist(hmaclist);
3151                                         goto sctp_set_hmac_done;
3152                                 }
3153                         }
3154                         found = 0;
3155                         for (i = 0; i < hmaclist->num_algo; i++) {
3156                                 if (hmaclist->hmac[i] == SCTP_AUTH_HMAC_ID_SHA1) {
3157                                         /* already in list */
3158                                         found = 1;
3159                                 }
3160                         }
3161                         if (!found) {
3162                                 sctp_free_hmaclist(hmaclist);
3163                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3164                                 error = EINVAL;
3165                                 break;
3166                         }
3167                         /* set it on the endpoint */
3168                         SCTP_INP_WLOCK(inp);
3169                         if (inp->sctp_ep.local_hmacs)
3170                                 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3171                         inp->sctp_ep.local_hmacs = hmaclist;
3172                         SCTP_INP_WUNLOCK(inp);
3173         sctp_set_hmac_done:
3174                         break;
3175                 }
3176         case SCTP_AUTH_ACTIVE_KEY:
3177                 {
3178                         struct sctp_authkeyid *scact;
3179
3180                         SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid,
3181                             optsize);
3182                         SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id);
3183
3184                         /* set the active key on the right place */
3185                         if (stcb) {
3186                                 /* set the active key on the assoc */
3187                                 if (sctp_auth_setactivekey(stcb,
3188                                     scact->scact_keynumber)) {
3189                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
3190                                             SCTP_FROM_SCTP_USRREQ,
3191                                             EINVAL);
3192                                         error = EINVAL;
3193                                 }
3194                                 SCTP_TCB_UNLOCK(stcb);
3195                         } else {
3196                                 /* set the active key on the endpoint */
3197                                 SCTP_INP_WLOCK(inp);
3198                                 if (sctp_auth_setactivekey_ep(inp,
3199                                     scact->scact_keynumber)) {
3200                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
3201                                             SCTP_FROM_SCTP_USRREQ,
3202                                             EINVAL);
3203                                         error = EINVAL;
3204                                 }
3205                                 SCTP_INP_WUNLOCK(inp);
3206                         }
3207                         break;
3208                 }
3209         case SCTP_AUTH_DELETE_KEY:
3210                 {
3211                         struct sctp_authkeyid *scdel;
3212
3213                         SCTP_CHECK_AND_CAST(scdel, optval, struct sctp_authkeyid,
3214                             optsize);
3215                         SCTP_FIND_STCB(inp, stcb, scdel->scact_assoc_id);
3216
3217                         /* delete the key from the right place */
3218                         if (stcb) {
3219                                 if (sctp_delete_sharedkey(stcb,
3220                                     scdel->scact_keynumber)) {
3221                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
3222                                             SCTP_FROM_SCTP_USRREQ,
3223                                             EINVAL);
3224                                         error = EINVAL;
3225                                 }
3226                                 SCTP_TCB_UNLOCK(stcb);
3227                         } else {
3228                                 SCTP_INP_WLOCK(inp);
3229                                 if (sctp_delete_sharedkey_ep(inp,
3230                                     scdel->scact_keynumber)) {
3231                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
3232                                             SCTP_FROM_SCTP_USRREQ,
3233                                             EINVAL);
3234                                         error = EINVAL;
3235                                 }
3236                                 SCTP_INP_WUNLOCK(inp);
3237                         }
3238                         break;
3239                 }
3240         case SCTP_AUTH_DEACTIVATE_KEY:
3241                 {
3242                         struct sctp_authkeyid *keyid;
3243
3244                         SCTP_CHECK_AND_CAST(keyid, optval, struct sctp_authkeyid,
3245                             optsize);
3246                         SCTP_FIND_STCB(inp, stcb, keyid->scact_assoc_id);
3247
3248                         /* deactivate the key from the right place */
3249                         if (stcb) {
3250                                 if (sctp_deact_sharedkey(stcb,
3251                                     keyid->scact_keynumber)) {
3252                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
3253                                             SCTP_FROM_SCTP_USRREQ,
3254                                             EINVAL);
3255                                         error = EINVAL;
3256                                 }
3257                                 SCTP_TCB_UNLOCK(stcb);
3258                         } else {
3259                                 SCTP_INP_WLOCK(inp);
3260                                 if (sctp_deact_sharedkey_ep(inp,
3261                                     keyid->scact_keynumber)) {
3262                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
3263                                             SCTP_FROM_SCTP_USRREQ,
3264                                             EINVAL);
3265                                         error = EINVAL;
3266                                 }
3267                                 SCTP_INP_WUNLOCK(inp);
3268                         }
3269                         break;
3270                 }
3271
3272         case SCTP_RESET_STREAMS:
3273                 {
3274                         struct sctp_stream_reset *strrst;
3275                         uint8_t send_in = 0, send_tsn = 0, send_out = 0,
3276                                 addstream = 0;
3277                         uint16_t addstrmcnt = 0;
3278                         int i;
3279
3280                         SCTP_CHECK_AND_CAST(strrst, optval, struct sctp_stream_reset, optsize);
3281                         SCTP_FIND_STCB(inp, stcb, strrst->strrst_assoc_id);
3282
3283                         if (stcb == NULL) {
3284                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
3285                                 error = ENOENT;
3286                                 break;
3287                         }
3288                         if (stcb->asoc.peer_supports_strreset == 0) {
3289                                 /*
3290                                  * Peer does not support it, we return
3291                                  * protocol not supported since this is true
3292                                  * for this feature and this peer, not the
3293                                  * socket request in general.
3294                                  */
3295                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EPROTONOSUPPORT);
3296                                 error = EPROTONOSUPPORT;
3297                                 SCTP_TCB_UNLOCK(stcb);
3298                                 break;
3299                         }
3300                         if (stcb->asoc.stream_reset_outstanding) {
3301                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
3302                                 error = EALREADY;
3303                                 SCTP_TCB_UNLOCK(stcb);
3304                                 break;
3305                         }
3306                         if (strrst->strrst_flags == SCTP_RESET_LOCAL_RECV) {
3307                                 send_in = 1;
3308                         } else if (strrst->strrst_flags == SCTP_RESET_LOCAL_SEND) {
3309                                 send_out = 1;
3310                         } else if (strrst->strrst_flags == SCTP_RESET_BOTH) {
3311                                 send_in = 1;
3312                                 send_out = 1;
3313                         } else if (strrst->strrst_flags == SCTP_RESET_TSN) {
3314                                 send_tsn = 1;
3315                         } else if (strrst->strrst_flags == SCTP_RESET_ADD_STREAMS) {
3316                                 if (send_tsn ||
3317                                     send_in ||
3318                                     send_out) {
3319                                         /* We can't do that and add streams */
3320                                         error = EINVAL;
3321                                         goto skip_stuff;
3322                                 }
3323                                 if (stcb->asoc.stream_reset_outstanding) {
3324                                         error = EBUSY;
3325                                         goto skip_stuff;
3326                                 }
3327                                 addstream = 1;
3328                                 /* We allocate here */
3329                                 addstrmcnt = strrst->strrst_num_streams;
3330                                 if ((int)(addstrmcnt + stcb->asoc.streamoutcnt) > 0xffff) {
3331                                         /* You can't have more than 64k */
3332                                         error = EINVAL;
3333                                         goto skip_stuff;
3334                                 }
3335                                 if ((stcb->asoc.strm_realoutsize - stcb->asoc.streamoutcnt) < addstrmcnt) {
3336                                         /* Need to allocate more */
3337                                         struct sctp_stream_out *oldstream;
3338                                         struct sctp_stream_queue_pending *sp;
3339                                         int removed;
3340
3341                                         oldstream = stcb->asoc.strmout;
3342                                         /* get some more */
3343                                         SCTP_MALLOC(stcb->asoc.strmout, struct sctp_stream_out *,
3344                                             ((stcb->asoc.streamoutcnt + addstrmcnt) * sizeof(struct sctp_stream_out)),
3345                                             SCTP_M_STRMO);
3346                                         if (stcb->asoc.strmout == NULL) {
3347                                                 stcb->asoc.strmout = oldstream;
3348                                                 error = ENOMEM;
3349                                                 goto skip_stuff;
3350                                         }
3351                                         /*
3352                                          * Ok now we proceed with copying
3353                                          * the old out stuff and
3354                                          * initializing the new stuff.
3355                                          */
3356                                         SCTP_TCB_SEND_LOCK(stcb);
3357                                         for (i = 0; i < stcb->asoc.streamoutcnt; i++) {
3358                                                 TAILQ_INIT(&stcb->asoc.strmout[i].outqueue);
3359                                                 stcb->asoc.strmout[i].next_sequence_sent = oldstream[i].next_sequence_sent;
3360                                                 stcb->asoc.strmout[i].last_msg_incomplete = oldstream[i].last_msg_incomplete;
3361                                                 stcb->asoc.strmout[i].stream_no = i;
3362                                                 if (oldstream[i].next_spoke.tqe_next) {
3363                                                         sctp_remove_from_wheel(stcb, &stcb->asoc, &oldstream[i], 1);
3364                                                         stcb->asoc.strmout[i].next_spoke.tqe_next = NULL;
3365                                                         stcb->asoc.strmout[i].next_spoke.tqe_prev = NULL;
3366                                                         removed = 1;
3367                                                 } else {
3368                                                         /* not on out wheel */
3369                                                         stcb->asoc.strmout[i].next_spoke.tqe_next = NULL;
3370                                                         stcb->asoc.strmout[i].next_spoke.tqe_prev = NULL;
3371                                                         removed = 0;
3372                                                 }
3373                                                 /*
3374                                                  * now anything on those
3375                                                  * queues?
3376                                                  */
3377                                                 while (TAILQ_EMPTY(&oldstream[i].outqueue) == 0) {
3378                                                         sp = TAILQ_FIRST(&oldstream[i].outqueue);
3379                                                         TAILQ_REMOVE(&oldstream[i].outqueue, sp, next);
3380                                                         TAILQ_INSERT_TAIL(&stcb->asoc.strmout[i].outqueue, sp, next);
3381                                                 }
3382                                                 /* Did we disrupt the wheel? */
3383                                                 if (removed) {
3384                                                         sctp_insert_on_wheel(stcb,
3385                                                             &stcb->asoc,
3386                                                             &stcb->asoc.strmout[i],
3387                                                             1);
3388                                                 }
3389                                                 /*
3390                                                  * Now move assoc pointers
3391                                                  * too
3392                                                  */
3393                                                 if (stcb->asoc.last_out_stream == &oldstream[i]) {
3394                                                         stcb->asoc.last_out_stream = &stcb->asoc.strmout[i];
3395                                                 }
3396                                                 if (stcb->asoc.locked_on_sending == &oldstream[i]) {
3397                                                         stcb->asoc.locked_on_sending = &stcb->asoc.strmout[i];
3398                                                 }
3399                                         }
3400                                         /* now the new streams */
3401                                         for (i = stcb->asoc.streamoutcnt; i < (stcb->asoc.streamoutcnt + addstrmcnt); i++) {
3402                                                 stcb->asoc.strmout[i].next_sequence_sent = 0x0;
3403                                                 TAILQ_INIT(&stcb->asoc.strmout[i].outqueue);
3404                                                 stcb->asoc.strmout[i].stream_no = i;
3405                                                 stcb->asoc.strmout[i].last_msg_incomplete = 0;
3406                                                 stcb->asoc.strmout[i].next_spoke.tqe_next = NULL;
3407                                                 stcb->asoc.strmout[i].next_spoke.tqe_prev = NULL;
3408                                         }
3409                                         stcb->asoc.strm_realoutsize = stcb->asoc.streamoutcnt + addstrmcnt;
3410                                         SCTP_FREE(oldstream, SCTP_M_STRMO);
3411                                 }
3412                                 SCTP_TCB_SEND_UNLOCK(stcb);
3413                                 goto skip_stuff;
3414                         } else {
3415                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3416                                 error = EINVAL;
3417                                 SCTP_TCB_UNLOCK(stcb);
3418                                 break;
3419                         }
3420                         for (i = 0; i < strrst->strrst_num_streams; i++) {
3421                                 if ((send_in) &&
3422
3423                                     (strrst->strrst_list[i] > stcb->asoc.streamincnt)) {
3424                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3425                                         error = EINVAL;
3426                                         goto get_out;
3427                                 }
3428                                 if ((send_out) &&
3429                                     (strrst->strrst_list[i] > stcb->asoc.streamoutcnt)) {
3430                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3431                                         error = EINVAL;
3432                                         goto get_out;
3433                                 }
3434                         }
3435         skip_stuff:
3436                         if (error) {
3437                 get_out:
3438                                 SCTP_TCB_UNLOCK(stcb);
3439                                 break;
3440                         }
3441                         error = sctp_send_str_reset_req(stcb, strrst->strrst_num_streams,
3442                             strrst->strrst_list,
3443                             send_out, (stcb->asoc.str_reset_seq_in - 3),
3444                             send_in, send_tsn, addstream, addstrmcnt);
3445
3446                         sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_REQ, SCTP_SO_LOCKED);
3447                         SCTP_TCB_UNLOCK(stcb);
3448                 }
3449                 break;
3450
3451         case SCTP_CONNECT_X:
3452                 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) {
3453                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3454                         error = EINVAL;
3455                         break;
3456                 }
3457                 error = sctp_do_connect_x(so, inp, optval, optsize, p, 0);
3458                 break;
3459
3460         case SCTP_CONNECT_X_DELAYED:
3461                 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) {
3462                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3463                         error = EINVAL;
3464                         break;
3465                 }
3466                 error = sctp_do_connect_x(so, inp, optval, optsize, p, 1);
3467                 break;
3468
3469         case SCTP_CONNECT_X_COMPLETE:
3470                 {
3471                         struct sockaddr *sa;
3472                         struct sctp_nets *net;
3473
3474                         /* FIXME MT: check correct? */
3475                         SCTP_CHECK_AND_CAST(sa, optval, struct sockaddr, optsize);
3476
3477                         /* find tcb */
3478                         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
3479                                 SCTP_INP_RLOCK(inp);
3480                                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
3481                                 if (stcb) {
3482                                         SCTP_TCB_LOCK(stcb);
3483                                         net = sctp_findnet(stcb, sa);
3484                                 }
3485                                 SCTP_INP_RUNLOCK(inp);
3486                         } else {
3487                                 /*
3488                                  * We increment here since
3489                                  * sctp_findassociation_ep_addr() wil do a
3490                                  * decrement if it finds the stcb as long as
3491                                  * the locked tcb (last argument) is NOT a
3492                                  * TCB.. aka NULL.
3493                                  */
3494                                 SCTP_INP_INCR_REF(inp);
3495                                 stcb = sctp_findassociation_ep_addr(&inp, sa, &net, NULL, NULL);
3496                                 if (stcb == NULL) {
3497                                         SCTP_INP_DECR_REF(inp);
3498                                 }
3499                         }
3500
3501                         if (stcb == NULL) {
3502                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
3503                                 error = ENOENT;
3504                                 break;
3505                         }
3506                         if (stcb->asoc.delayed_connection == 1) {
3507                                 stcb->asoc.delayed_connection = 0;
3508                                 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
3509                                 sctp_timer_stop(SCTP_TIMER_TYPE_INIT, inp, stcb,
3510                                     stcb->asoc.primary_destination,
3511                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_9);
3512                                 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
3513                         } else {
3514                                 /*
3515                                  * already expired or did not use delayed
3516                                  * connectx
3517                                  */
3518                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
3519                                 error = EALREADY;
3520                         }
3521                         SCTP_TCB_UNLOCK(stcb);
3522                 }
3523                 break;
3524         case SCTP_MAX_BURST:
3525                 {
3526                         uint8_t *burst;
3527
3528                         SCTP_CHECK_AND_CAST(burst, optval, uint8_t, optsize);
3529
3530                         SCTP_INP_WLOCK(inp);
3531                         if (*burst) {
3532                                 inp->sctp_ep.max_burst = *burst;
3533                         }
3534                         SCTP_INP_WUNLOCK(inp);
3535                 }
3536                 break;
3537         case SCTP_MAXSEG:
3538                 {
3539                         struct sctp_assoc_value *av;
3540                         int ovh;
3541
3542                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
3543                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
3544
3545                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
3546                                 ovh = SCTP_MED_OVERHEAD;
3547                         } else {
3548                                 ovh = SCTP_MED_V4_OVERHEAD;
3549                         }
3550                         if (stcb) {
3551                                 if (av->assoc_value) {
3552                                         stcb->asoc.sctp_frag_point = (av->assoc_value + ovh);
3553                                 } else {
3554                                         stcb->asoc.sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
3555                                 }
3556                                 SCTP_TCB_UNLOCK(stcb);
3557                         } else {
3558                                 SCTP_INP_WLOCK(inp);
3559                                 /*
3560                                  * FIXME MT: I think this is not in tune
3561                                  * with the API ID
3562                                  */
3563                                 if (av->assoc_value) {
3564                                         inp->sctp_frag_point = (av->assoc_value + ovh);
3565                                 } else {
3566                                         inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
3567                                 }
3568                                 SCTP_INP_WUNLOCK(inp);
3569                         }
3570                 }
3571                 break;
3572         case SCTP_EVENTS:
3573                 {
3574                         struct sctp_event_subscribe *events;
3575
3576                         SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, optsize);
3577
3578                         SCTP_INP_WLOCK(inp);
3579                         if (events->sctp_data_io_event) {
3580                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
3581                         } else {
3582                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
3583                         }
3584
3585                         if (events->sctp_association_event) {
3586                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
3587                         } else {
3588                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
3589                         }
3590
3591                         if (events->sctp_address_event) {
3592                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
3593                         } else {
3594                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
3595                         }
3596
3597                         if (events->sctp_send_failure_event) {
3598                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
3599                         } else {
3600                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
3601                         }
3602
3603                         if (events->sctp_peer_error_event) {
3604                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR);
3605                         } else {
3606                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPEERERR);
3607                         }
3608
3609                         if (events->sctp_shutdown_event) {
3610                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
3611                         } else {
3612                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
3613                         }
3614
3615                         if (events->sctp_partial_delivery_event) {
3616                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
3617                         } else {
3618                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
3619                         }
3620
3621                         if (events->sctp_adaptation_layer_event) {
3622                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
3623                         } else {
3624                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
3625                         }
3626
3627                         if (events->sctp_authentication_event) {
3628                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT);
3629                         } else {
3630                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTHEVNT);
3631                         }
3632
3633                         if (events->sctp_sender_dry_event) {
3634                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_DRYEVNT);
3635                                 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3636                                     (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
3637                                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
3638                                         if (stcb) {
3639                                                 SCTP_TCB_LOCK(stcb);
3640                                         }
3641                                         if (stcb &&
3642                                             TAILQ_EMPTY(&stcb->asoc.send_queue) &&
3643                                             TAILQ_EMPTY(&stcb->asoc.sent_queue) &&
3644                                             (stcb->asoc.stream_queue_cnt == 0)) {
3645                                                 sctp_ulp_notify(SCTP_NOTIFY_SENDER_DRY, stcb, 0, NULL, SCTP_SO_LOCKED);
3646                                         }
3647                                         if (stcb) {
3648                                                 SCTP_TCB_UNLOCK(stcb);
3649                                         }
3650                                 }
3651                         } else {
3652                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_DRYEVNT);
3653                         }
3654
3655                         if (events->sctp_stream_reset_event) {
3656                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
3657                         } else {
3658                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
3659                         }
3660                         SCTP_INP_WUNLOCK(inp);
3661                 }
3662                 break;
3663
3664         case SCTP_ADAPTATION_LAYER:
3665                 {
3666                         struct sctp_setadaptation *adap_bits;
3667
3668                         SCTP_CHECK_AND_CAST(adap_bits, optval, struct sctp_setadaptation, optsize);
3669                         SCTP_INP_WLOCK(inp);
3670                         inp->sctp_ep.adaptation_layer_indicator = adap_bits->ssb_adaptation_ind;
3671                         SCTP_INP_WUNLOCK(inp);
3672                 }
3673                 break;
3674 #ifdef SCTP_DEBUG
3675         case SCTP_SET_INITIAL_DBG_SEQ:
3676                 {
3677                         uint32_t *vvv;
3678
3679                         SCTP_CHECK_AND_CAST(vvv, optval, uint32_t, optsize);
3680                         SCTP_INP_WLOCK(inp);
3681                         inp->sctp_ep.initial_sequence_debug = *vvv;
3682                         SCTP_INP_WUNLOCK(inp);
3683                 }
3684                 break;
3685 #endif
3686         case SCTP_DEFAULT_SEND_PARAM:
3687                 {
3688                         struct sctp_sndrcvinfo *s_info;
3689
3690                         SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, optsize);
3691                         SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id);
3692
3693                         if (stcb) {
3694                                 if (s_info->sinfo_stream <= stcb->asoc.streamoutcnt) {
3695                                         memcpy(&stcb->asoc.def_send, s_info, min(optsize, sizeof(stcb->asoc.def_send)));
3696                                 } else {
3697                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3698                                         error = EINVAL;
3699                                 }
3700                                 SCTP_TCB_UNLOCK(stcb);
3701                         } else {
3702                                 SCTP_INP_WLOCK(inp);
3703                                 memcpy(&inp->def_send, s_info, min(optsize, sizeof(inp->def_send)));
3704                                 SCTP_INP_WUNLOCK(inp);
3705                         }
3706                 }
3707                 break;
3708         case SCTP_PEER_ADDR_PARAMS:
3709                 /* Applys to the specific association */
3710                 {
3711                         struct sctp_paddrparams *paddrp;
3712                         struct sctp_nets *net;
3713
3714                         SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, optsize);
3715                         SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id);
3716                         net = NULL;
3717                         if (stcb) {
3718                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address);
3719                         } else {
3720                                 /*
3721                                  * We increment here since
3722                                  * sctp_findassociation_ep_addr() wil do a
3723                                  * decrement if it finds the stcb as long as
3724                                  * the locked tcb (last argument) is NOT a
3725                                  * TCB.. aka NULL.
3726                                  */
3727                                 SCTP_INP_INCR_REF(inp);
3728                                 stcb = sctp_findassociation_ep_addr(&inp,
3729                                     (struct sockaddr *)&paddrp->spp_address,
3730                                     &net, NULL, NULL);
3731                                 if (stcb == NULL) {
3732                                         SCTP_INP_DECR_REF(inp);
3733                                 }
3734                         }
3735                         if (stcb && (net == NULL)) {
3736                                 struct sockaddr *sa;
3737
3738                                 sa = (struct sockaddr *)&paddrp->spp_address;
3739                                 if (sa->sa_family == AF_INET) {
3740                                         struct sockaddr_in *sin;
3741
3742                                         sin = (struct sockaddr_in *)sa;
3743                                         if (sin->sin_addr.s_addr) {
3744                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3745                                                 SCTP_TCB_UNLOCK(stcb);
3746                                                 error = EINVAL;
3747                                                 break;
3748                                         }
3749                                 } else if (sa->sa_family == AF_INET6) {
3750                                         struct sockaddr_in6 *sin6;
3751
3752                                         sin6 = (struct sockaddr_in6 *)sa;
3753                                         if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3754                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3755                                                 SCTP_TCB_UNLOCK(stcb);
3756                                                 error = EINVAL;
3757                                                 break;
3758                                         }
3759                                 } else {
3760                                         error = EAFNOSUPPORT;
3761                                         SCTP_TCB_UNLOCK(stcb);
3762                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
3763                                         break;
3764                                 }
3765                         }
3766                         /* sanity checks */
3767                         if ((paddrp->spp_flags & SPP_HB_ENABLE) && (paddrp->spp_flags & SPP_HB_DISABLE)) {
3768                                 if (stcb)
3769                                         SCTP_TCB_UNLOCK(stcb);
3770                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3771                                 return (EINVAL);
3772                         }
3773                         if ((paddrp->spp_flags & SPP_PMTUD_ENABLE) && (paddrp->spp_flags & SPP_PMTUD_DISABLE)) {
3774                                 if (stcb)
3775                                         SCTP_TCB_UNLOCK(stcb);
3776                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3777                                 return (EINVAL);
3778                         }
3779                         if (stcb) {
3780                                 /************************TCB SPECIFIC SET ******************/
3781                                 /*
3782                                  * do we change the timer for HB, we run
3783                                  * only one?
3784                                  */
3785                                 int ovh = 0;
3786
3787                                 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
3788                                         ovh = SCTP_MED_OVERHEAD;
3789                                 } else {
3790                                         ovh = SCTP_MED_V4_OVERHEAD;
3791                                 }
3792
3793                                 if (paddrp->spp_hbinterval)
3794                                         stcb->asoc.heart_beat_delay = paddrp->spp_hbinterval;
3795                                 else if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO)
3796                                         stcb->asoc.heart_beat_delay = 0;
3797
3798                                 /* network sets ? */
3799                                 if (net) {
3800                                         /************************NET SPECIFIC SET ******************/
3801                                         if (paddrp->spp_flags & SPP_HB_DEMAND) {
3802                                                 /* on demand HB */
3803                                                 if (sctp_send_hb(stcb, 1, net) < 0) {
3804                                                         /* asoc destroyed */
3805                                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3806                                                         error = EINVAL;
3807                                                         break;
3808                                                 }
3809                                         }
3810                                         if (paddrp->spp_flags & SPP_HB_DISABLE) {
3811                                                 net->dest_state |= SCTP_ADDR_NOHB;
3812                                         }
3813                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3814                                                 net->dest_state &= ~SCTP_ADDR_NOHB;
3815                                         }
3816                                         if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && (paddrp->spp_pathmtu >= SCTP_SMALLEST_PMTU)) {
3817                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3818                                                         sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
3819                                                             SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10);
3820                                                 }
3821                                                 if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) {
3822                                                         net->mtu = paddrp->spp_pathmtu + ovh;
3823                                                         if (net->mtu < stcb->asoc.smallest_mtu) {
3824                                                                 sctp_pathmtu_adjustment(inp, stcb, net, net->mtu);
3825                                                         }
3826                                                 }
3827                                         }
3828                                         if (paddrp->spp_flags & SPP_PMTUD_ENABLE) {
3829                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3830                                                         sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
3831                                                 }
3832                                         }
3833                                         if (paddrp->spp_pathmaxrxt)
3834                                                 net->failure_threshold = paddrp->spp_pathmaxrxt;
3835 #ifdef INET
3836                                         if (paddrp->spp_flags & SPP_IPV4_TOS) {
3837                                                 if (net->ro._l_addr.sin.sin_family == AF_INET) {
3838                                                         net->tos_flowlabel = paddrp->spp_ipv4_tos & 0x000000fc;
3839                                                 }
3840                                         }
3841 #endif
3842 #ifdef INET6
3843                                         if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL) {
3844                                                 if (net->ro._l_addr.sin6.sin6_family == AF_INET6) {
3845                                                         net->tos_flowlabel = paddrp->spp_ipv6_flowlabel;
3846                                                 }
3847                                         }
3848 #endif
3849                                 } else {
3850                                         /************************ASSOC ONLY -- NO NET SPECIFIC SET ******************/
3851                                         if (paddrp->spp_pathmaxrxt)
3852                                                 stcb->asoc.def_net_failure = paddrp->spp_pathmaxrxt;
3853
3854                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3855                                                 /* Turn back on the timer */
3856                                                 stcb->asoc.hb_is_disabled = 0;
3857                                                 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
3858                                         }
3859                                         if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && (paddrp->spp_pathmtu >= SCTP_SMALLEST_PMTU)) {
3860                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3861                                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3862                                                                 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
3863                                                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10);
3864                                                         }
3865                                                         if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) {
3866                                                                 net->mtu = paddrp->spp_pathmtu + ovh;
3867                                                                 if (net->mtu < stcb->asoc.smallest_mtu) {
3868                                                                         sctp_pathmtu_adjustment(inp, stcb, net, net->mtu);
3869                                                                 }
3870                                                         }
3871                                                 }
3872                                         }
3873                                         if (paddrp->spp_flags & SPP_PMTUD_ENABLE) {
3874                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3875                                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3876                                                                 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
3877                                                         }
3878                                                 }
3879                                         }
3880                                         if (paddrp->spp_flags & SPP_HB_DISABLE) {
3881                                                 int cnt_of_unconf = 0;
3882                                                 struct sctp_nets *lnet;
3883
3884                                                 stcb->asoc.hb_is_disabled = 1;
3885                                                 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
3886                                                         if (lnet->dest_state & SCTP_ADDR_UNCONFIRMED) {
3887                                                                 cnt_of_unconf++;
3888                                                         }
3889                                                 }
3890                                                 /*
3891                                                  * stop the timer ONLY if we
3892                                                  * have no unconfirmed
3893                                                  * addresses
3894                                                  */
3895                                                 if (cnt_of_unconf == 0) {
3896                                                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3897                                                                 sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net,
3898                                                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_11);
3899                                                         }
3900                                                 }
3901                                         }
3902                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3903                                                 /* start up the timer. */
3904                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3905                                                         sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
3906                                                 }
3907                                         }
3908 #ifdef INET
3909                                         if (paddrp->spp_flags & SPP_IPV4_TOS)
3910                                                 stcb->asoc.default_tos = paddrp->spp_ipv4_tos & 0x000000fc;
3911 #endif
3912 #ifdef INET6
3913                                         if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL)
3914                                                 stcb->asoc.default_flowlabel = paddrp->spp_ipv6_flowlabel;
3915 #endif
3916
3917                                 }
3918                                 SCTP_TCB_UNLOCK(stcb);
3919                         } else {
3920                                 /************************NO TCB, SET TO default stuff ******************/
3921                                 SCTP_INP_WLOCK(inp);
3922                                 /*
3923                                  * For the TOS/FLOWLABEL stuff you set it
3924                                  * with the options on the socket
3925                                  */
3926                                 if (paddrp->spp_pathmaxrxt) {
3927                                         inp->sctp_ep.def_net_failure = paddrp->spp_pathmaxrxt;
3928                                 }
3929                                 if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO)
3930                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = 0;
3931                                 else if (paddrp->spp_hbinterval) {
3932                                         if (paddrp->spp_hbinterval > SCTP_MAX_HB_INTERVAL)
3933                                                 paddrp->spp_hbinterval = SCTP_MAX_HB_INTERVAL;
3934                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(paddrp->spp_hbinterval);
3935                                 }
3936                                 if (paddrp->spp_flags & SPP_HB_ENABLE) {
3937                                         sctp_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
3938
3939                                 } else if (paddrp->spp_flags & SPP_HB_DISABLE) {
3940                                         sctp_feature_on(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
3941                                 }
3942                                 SCTP_INP_WUNLOCK(inp);
3943                         }
3944                 }
3945                 break;
3946         case SCTP_RTOINFO:
3947                 {
3948                         struct sctp_rtoinfo *srto;
3949                         uint32_t new_init, new_min, new_max;
3950
3951                         SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, optsize);
3952                         SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id);
3953
3954                         if (stcb) {
3955                                 if (srto->srto_initial)
3956                                         new_init = srto->srto_initial;
3957                                 else
3958                                         new_init = stcb->asoc.initial_rto;
3959                                 if (srto->srto_max)
3960                                         new_max = srto->srto_max;
3961                                 else
3962                                         new_max = stcb->asoc.maxrto;
3963                                 if (srto->srto_min)
3964                                         new_min = srto->srto_min;
3965                                 else
3966                                         new_min = stcb->asoc.minrto;
3967                                 if ((new_min <= new_init) && (new_init <= new_max)) {
3968                                         stcb->asoc.initial_rto = new_init;
3969                                         stcb->asoc.maxrto = new_max;
3970                                         stcb->asoc.minrto = new_min;
3971                                 } else {
3972                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3973                                         error = EINVAL;
3974                                 }
3975                                 SCTP_TCB_UNLOCK(stcb);
3976                         } else {
3977                                 SCTP_INP_WLOCK(inp);
3978                                 if (srto->srto_initial)
3979                                         new_init = srto->srto_initial;
3980                                 else
3981                                         new_init = inp->sctp_ep.initial_rto;
3982                                 if (srto->srto_max)
3983                                         new_max = srto->srto_max;
3984                                 else
3985                                         new_max = inp->sctp_ep.sctp_maxrto;
3986                                 if (srto->srto_min)
3987                                         new_min = srto->srto_min;
3988                                 else
3989                                         new_min = inp->sctp_ep.sctp_minrto;
3990                                 if ((new_min <= new_init) && (new_init <= new_max)) {
3991                                         inp->sctp_ep.initial_rto = new_init;
3992                                         inp->sctp_ep.sctp_maxrto = new_max;
3993                                         inp->sctp_ep.sctp_minrto = new_min;
3994                                 } else {
3995                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3996                                         error = EINVAL;
3997                                 }
3998                                 SCTP_INP_WUNLOCK(inp);
3999                         }
4000                 }
4001                 break;
4002         case SCTP_ASSOCINFO:
4003                 {
4004                         struct sctp_assocparams *sasoc;
4005
4006                         SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, optsize);
4007                         SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id);
4008                         if (sasoc->sasoc_cookie_life) {
4009                                 /* boundary check the cookie life */
4010                                 if (sasoc->sasoc_cookie_life < 1000)
4011                                         sasoc->sasoc_cookie_life = 1000;
4012                                 if (sasoc->sasoc_cookie_life > SCTP_MAX_COOKIE_LIFE) {
4013                                         sasoc->sasoc_cookie_life = SCTP_MAX_COOKIE_LIFE;
4014                                 }
4015                         }
4016                         if (stcb) {
4017                                 if (sasoc->sasoc_asocmaxrxt)
4018                                         stcb->asoc.max_send_times = sasoc->sasoc_asocmaxrxt;
4019                                 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets;
4020                                 sasoc->sasoc_peer_rwnd = 0;
4021                                 sasoc->sasoc_local_rwnd = 0;
4022                                 if (sasoc->sasoc_cookie_life) {
4023                                         stcb->asoc.cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life);
4024                                 }
4025                                 SCTP_TCB_UNLOCK(stcb);
4026                         } else {
4027                                 SCTP_INP_WLOCK(inp);
4028                                 if (sasoc->sasoc_asocmaxrxt)
4029                                         inp->sctp_ep.max_send_times = sasoc->sasoc_asocmaxrxt;
4030                                 sasoc->sasoc_number_peer_destinations = 0;
4031                                 sasoc->sasoc_peer_rwnd = 0;
4032                                 sasoc->sasoc_local_rwnd = 0;
4033                                 if (sasoc->sasoc_cookie_life) {
4034                                         inp->sctp_ep.def_cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life);
4035                                 }
4036                                 SCTP_INP_WUNLOCK(inp);
4037                         }
4038                 }
4039                 break;
4040         case SCTP_INITMSG:
4041                 {
4042                         struct sctp_initmsg *sinit;
4043
4044                         SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, optsize);
4045                         SCTP_INP_WLOCK(inp);
4046                         if (sinit->sinit_num_ostreams)
4047                                 inp->sctp_ep.pre_open_stream_count = sinit->sinit_num_ostreams;
4048
4049                         if (sinit->sinit_max_instreams)
4050                                 inp->sctp_ep.max_open_streams_intome = sinit->sinit_max_instreams;
4051
4052                         if (sinit->sinit_max_attempts)
4053                                 inp->sctp_ep.max_init_times = sinit->sinit_max_attempts;
4054
4055                         if (sinit->sinit_max_init_timeo)
4056                                 inp->sctp_ep.initial_init_rto_max = sinit->sinit_max_init_timeo;
4057                         SCTP_INP_WUNLOCK(inp);
4058                 }
4059                 break;
4060         case SCTP_PRIMARY_ADDR:
4061                 {
4062                         struct sctp_setprim *spa;
4063                         struct sctp_nets *net, *lnet;
4064
4065                         SCTP_CHECK_AND_CAST(spa, optval, struct sctp_setprim, optsize);
4066                         SCTP_FIND_STCB(inp, stcb, spa->ssp_assoc_id);
4067
4068                         net = NULL;
4069                         if (stcb) {
4070                                 net = sctp_findnet(stcb, (struct sockaddr *)&spa->ssp_addr);
4071                         } else {
4072                                 /*
4073                                  * We increment here since
4074                                  * sctp_findassociation_ep_addr() wil do a
4075                                  * decrement if it finds the stcb as long as
4076                                  * the locked tcb (last argument) is NOT a
4077                                  * TCB.. aka NULL.
4078                                  */
4079                                 SCTP_INP_INCR_REF(inp);
4080                                 stcb = sctp_findassociation_ep_addr(&inp,
4081                                     (struct sockaddr *)&spa->ssp_addr,
4082                                     &net, NULL, NULL);
4083                                 if (stcb == NULL) {
4084                                         SCTP_INP_DECR_REF(inp);
4085                                 }
4086                         }
4087
4088                         if ((stcb) && (net)) {
4089                                 if ((net != stcb->asoc.primary_destination) &&
4090                                     (!(net->dest_state & SCTP_ADDR_UNCONFIRMED))) {
4091                                         /* Ok we need to set it */
4092                                         lnet = stcb->asoc.primary_destination;
4093                                         if (sctp_set_primary_addr(stcb, (struct sockaddr *)NULL, net) == 0) {
4094                                                 if (net->dest_state & SCTP_ADDR_SWITCH_PRIMARY) {
4095                                                         net->dest_state |= SCTP_ADDR_DOUBLE_SWITCH;
4096                                                 }
4097                                                 net->dest_state |= SCTP_ADDR_SWITCH_PRIMARY;
4098                                         }
4099                                 }
4100                         } else {
4101                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4102                                 error = EINVAL;
4103                         }
4104                         if (stcb) {
4105                                 SCTP_TCB_UNLOCK(stcb);
4106                         }
4107                 }
4108                 break;
4109         case SCTP_SET_DYNAMIC_PRIMARY:
4110                 {
4111                         union sctp_sockstore *ss;
4112
4113                         error = priv_check(curthread,
4114                             PRIV_NETINET_RESERVEDPORT);
4115                         if (error)
4116                                 break;
4117
4118                         SCTP_CHECK_AND_CAST(ss, optval, union sctp_sockstore, optsize);
4119                         /* SUPER USER CHECK? */
4120                         error = sctp_dynamic_set_primary(&ss->sa, vrf_id);
4121                 }
4122                 break;
4123         case SCTP_SET_PEER_PRIMARY_ADDR:
4124                 {
4125                         struct sctp_setpeerprim *sspp;
4126
4127                         SCTP_CHECK_AND_CAST(sspp, optval, struct sctp_setpeerprim, optsize);
4128                         SCTP_FIND_STCB(inp, stcb, sspp->sspp_assoc_id);
4129                         if (stcb != NULL) {
4130                                 struct sctp_ifa *ifa;
4131
4132                                 ifa = sctp_find_ifa_by_addr((struct sockaddr *)&sspp->sspp_addr,
4133                                     stcb->asoc.vrf_id, SCTP_ADDR_NOT_LOCKED);
4134                                 if (ifa == NULL) {
4135                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4136                                         error = EINVAL;
4137                                         goto out_of_it;
4138                                 }
4139                                 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
4140                                         /*
4141                                          * Must validate the ifa found is in
4142                                          * our ep
4143                                          */
4144                                         struct sctp_laddr *laddr;
4145                                         int found = 0;
4146
4147                                         LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4148                                                 if (laddr->ifa == NULL) {
4149                                                         SCTPDBG(SCTP_DEBUG_OUTPUT1, "%s: NULL ifa\n",
4150                                                             __FUNCTION__);
4151                                                         continue;
4152                                                 }
4153                                                 if (laddr->ifa == ifa) {
4154                                                         found = 1;
4155                                                         break;
4156                                                 }
4157                                         }
4158                                         if (!found) {
4159                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4160                                                 error = EINVAL;
4161                                                 goto out_of_it;
4162                                         }
4163                                 }
4164                                 if (sctp_set_primary_ip_address_sa(stcb,
4165                                     (struct sockaddr *)&sspp->sspp_addr) != 0) {
4166                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4167                                         error = EINVAL;
4168                                 }
4169                 out_of_it:
4170                                 SCTP_TCB_UNLOCK(stcb);
4171                         } else {
4172                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4173                                 error = EINVAL;
4174                         }
4175
4176                 }
4177                 break;
4178         case SCTP_BINDX_ADD_ADDR:
4179                 {
4180                         struct sctp_getaddresses *addrs;
4181                         size_t sz;
4182                         struct thread *td;
4183
4184                         td = (struct thread *)p;
4185                         SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses,
4186                             optsize);
4187                         if (addrs->addr->sa_family == AF_INET) {
4188                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in);
4189                                 if (optsize < sz) {
4190                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4191                                         error = EINVAL;
4192                                         break;
4193                                 }
4194                                 if (td != NULL && (error = prison_local_ip4(td->td_ucred, &(((struct sockaddr_in *)(addrs->addr))->sin_addr)))) {
4195                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, error);
4196                                         break;
4197                                 }
4198 #ifdef INET6
4199                         } else if (addrs->addr->sa_family == AF_INET6) {
4200                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in6);
4201                                 if (optsize < sz) {
4202                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4203                                         error = EINVAL;
4204                                         break;
4205                                 }
4206                                 if (td != NULL && (error = prison_local_ip6(td->td_ucred, &(((struct sockaddr_in6 *)(addrs->addr))->sin6_addr),
4207                                     (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
4208                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, error);
4209                                         break;
4210                                 }
4211 #endif
4212                         } else {
4213                                 error = EAFNOSUPPORT;
4214                                 break;
4215                         }
4216                         sctp_bindx_add_address(so, inp, addrs->addr,
4217                             addrs->sget_assoc_id, vrf_id,
4218                             &error, p);
4219                 }
4220                 break;
4221         case SCTP_BINDX_REM_ADDR:
4222                 {
4223                         struct sctp_getaddresses *addrs;
4224                         size_t sz;
4225                         struct thread *td;
4226
4227                         td = (struct thread *)p;
4228
4229                         SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses, optsize);
4230                         if (addrs->addr->sa_family == AF_INET) {
4231                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in);
4232                                 if (optsize < sz) {
4233                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4234                                         error = EINVAL;
4235                                         break;
4236                                 }
4237                                 if (td != NULL && (error = prison_local_ip4(td->td_ucred, &(((struct sockaddr_in *)(addrs->addr))->sin_addr)))) {
4238                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, error);
4239                                         break;
4240                                 }
4241 #ifdef INET6
4242                         } else if (addrs->addr->sa_family == AF_INET6) {
4243                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in6);
4244                                 if (optsize < sz) {
4245                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4246                                         error = EINVAL;
4247                                         break;
4248                                 }
4249                                 if (td != NULL && (error = prison_local_ip6(td->td_ucred, &(((struct sockaddr_in6 *)(addrs->addr))->sin6_addr),
4250                                     (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
4251                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, error);
4252                                         break;
4253                                 }
4254 #endif
4255                         } else {
4256                                 error = EAFNOSUPPORT;
4257                                 break;
4258                         }
4259                         sctp_bindx_delete_address(so, inp, addrs->addr,
4260                             addrs->sget_assoc_id, vrf_id,
4261                             &error);
4262                 }
4263                 break;
4264         default:
4265                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
4266                 error = ENOPROTOOPT;
4267                 break;
4268         }                       /* end switch (opt) */
4269         return (error);
4270 }
4271
4272 int
4273 sctp_ctloutput(struct socket *so, struct sockopt *sopt)
4274 {
4275         void *optval = NULL;
4276         size_t optsize = 0;
4277         struct sctp_inpcb *inp;
4278         void *p;
4279         int error = 0;
4280
4281         inp = (struct sctp_inpcb *)so->so_pcb;
4282         if (inp == 0) {
4283                 /* I made the same as TCP since we are not setup? */
4284                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4285                 return (ECONNRESET);
4286         }
4287         if (sopt->sopt_level != IPPROTO_SCTP) {
4288                 /* wrong proto level... send back up to IP */
4289 #ifdef INET6
4290                 if (INP_CHECK_SOCKAF(so, AF_INET6))
4291                         error = ip6_ctloutput(so, sopt);
4292                 else
4293 #endif                          /* INET6 */
4294                         error = ip_ctloutput(so, sopt);
4295                 return (error);
4296         }
4297         optsize = sopt->sopt_valsize;
4298         if (optsize) {
4299                 SCTP_MALLOC(optval, void *, optsize, SCTP_M_SOCKOPT);
4300                 if (optval == NULL) {
4301                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOBUFS);
4302                         return (ENOBUFS);
4303                 }
4304                 error = sooptcopyin(sopt, optval, optsize, optsize);
4305                 if (error) {
4306                         SCTP_FREE(optval, SCTP_M_SOCKOPT);
4307                         goto out;
4308                 }
4309         }
4310         p = (void *)sopt->sopt_td;
4311         if (sopt->sopt_dir == SOPT_SET) {
4312                 error = sctp_setopt(so, sopt->sopt_name, optval, optsize, p);
4313         } else if (sopt->sopt_dir == SOPT_GET) {
4314                 error = sctp_getopt(so, sopt->sopt_name, optval, &optsize, p);
4315         } else {
4316                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4317                 error = EINVAL;
4318         }
4319         if ((error == 0) && (optval != NULL)) {
4320                 error = sooptcopyout(sopt, optval, optsize);
4321                 SCTP_FREE(optval, SCTP_M_SOCKOPT);
4322         } else if (optval != NULL) {
4323                 SCTP_FREE(optval, SCTP_M_SOCKOPT);
4324         }
4325 out:
4326         return (error);
4327 }
4328
4329
4330 static int
4331 sctp_connect(struct socket *so, struct sockaddr *addr, struct thread *p)
4332 {
4333         int error = 0;
4334         int create_lock_on = 0;
4335         uint32_t vrf_id;
4336         struct sctp_inpcb *inp;
4337         struct sctp_tcb *stcb = NULL;
4338
4339         inp = (struct sctp_inpcb *)so->so_pcb;
4340         if (inp == 0) {
4341                 /* I made the same as TCP since we are not setup? */
4342                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4343                 return (ECONNRESET);
4344         }
4345         if (addr == NULL) {
4346                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4347                 return EINVAL;
4348         }
4349 #ifdef INET6
4350         if (addr->sa_family == AF_INET6) {
4351                 struct sockaddr_in6 *sin6p;
4352
4353                 if (addr->sa_len != sizeof(struct sockaddr_in6)) {
4354                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4355                         return (EINVAL);
4356                 }
4357                 sin6p = (struct sockaddr_in6 *)addr;
4358                 if (p != NULL && (error = prison_remote_ip6(p->td_ucred, &sin6p->sin6_addr)) != 0) {
4359                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
4360                         return (error);
4361                 }
4362         } else
4363 #endif
4364         if (addr->sa_family == AF_INET) {
4365                 struct sockaddr_in *sinp;
4366
4367                 if (addr->sa_len != sizeof(struct sockaddr_in)) {
4368                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4369                         return (EINVAL);
4370                 }
4371                 sinp = (struct sockaddr_in *)addr;
4372                 if (p != NULL && (error = prison_remote_ip4(p->td_ucred, &sinp->sin_addr)) != 0) {
4373                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
4374                         return (error);
4375                 }
4376         } else {
4377                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EAFNOSUPPORT);
4378                 return (EAFNOSUPPORT);
4379         }
4380         SCTP_INP_INCR_REF(inp);
4381         SCTP_ASOC_CREATE_LOCK(inp);
4382         create_lock_on = 1;
4383
4384
4385         if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4386             (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4387                 /* Should I really unlock ? */
4388                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EFAULT);
4389                 error = EFAULT;
4390                 goto out_now;
4391         }
4392 #ifdef INET6
4393         if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) &&
4394             (addr->sa_family == AF_INET6)) {
4395                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4396                 error = EINVAL;
4397                 goto out_now;
4398         }
4399 #endif                          /* INET6 */
4400         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
4401             SCTP_PCB_FLAGS_UNBOUND) {
4402                 /* Bind a ephemeral port */
4403                 error = sctp_inpcb_bind(so, NULL, NULL, p);
4404                 if (error) {
4405                         goto out_now;
4406                 }
4407         }
4408         /* Now do we connect? */
4409         if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
4410             (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE))) {
4411                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4412                 error = EINVAL;
4413                 goto out_now;
4414         }
4415         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
4416             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
4417                 /* We are already connected AND the TCP model */
4418                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
4419                 error = EADDRINUSE;
4420                 goto out_now;
4421         }
4422         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4423                 SCTP_INP_RLOCK(inp);
4424                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
4425                 SCTP_INP_RUNLOCK(inp);
4426         } else {
4427                 /*
4428                  * We increment here since sctp_findassociation_ep_addr()
4429                  * will do a decrement if it finds the stcb as long as the
4430                  * locked tcb (last argument) is NOT a TCB.. aka NULL.
4431                  */
4432                 SCTP_INP_INCR_REF(inp);
4433                 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL);
4434                 if (stcb == NULL) {
4435                         SCTP_INP_DECR_REF(inp);
4436                 } else {
4437                         SCTP_TCB_UNLOCK(stcb);
4438                 }
4439         }
4440         if (stcb != NULL) {
4441                 /* Already have or am bring up an association */
4442                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
4443                 error = EALREADY;
4444                 goto out_now;
4445         }
4446         vrf_id = inp->def_vrf_id;
4447         /* We are GOOD to go */
4448         stcb = sctp_aloc_assoc(inp, addr, &error, 0, vrf_id, p);
4449         if (stcb == NULL) {
4450                 /* Gak! no memory */
4451                 goto out_now;
4452         }
4453         if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
4454                 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
4455                 /* Set the connected flag so we can queue data */
4456                 SOCKBUF_LOCK(&so->so_rcv);
4457                 so->so_rcv.sb_state &= ~SBS_CANTRCVMORE;
4458                 SOCKBUF_UNLOCK(&so->so_rcv);
4459                 SOCKBUF_LOCK(&so->so_snd);
4460                 so->so_snd.sb_state &= ~SBS_CANTSENDMORE;
4461                 SOCKBUF_UNLOCK(&so->so_snd);
4462                 SOCK_LOCK(so);
4463                 so->so_state &= ~SS_ISDISCONNECTING;
4464                 SOCK_UNLOCK(so);
4465                 soisconnecting(so);
4466         }
4467         SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_COOKIE_WAIT);
4468         (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
4469
4470         /* initialize authentication parameters for the assoc */
4471         sctp_initialize_auth_params(inp, stcb);
4472
4473         sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
4474         SCTP_TCB_UNLOCK(stcb);
4475 out_now:
4476         if (create_lock_on) {
4477                 SCTP_ASOC_CREATE_UNLOCK(inp);
4478         }
4479         SCTP_INP_DECR_REF(inp);
4480         return error;
4481 }
4482
4483 int
4484 sctp_listen(struct socket *so, int backlog, struct thread *p)
4485 {
4486         /*
4487          * Note this module depends on the protocol processing being called
4488          * AFTER any socket level flags and backlog are applied to the
4489          * socket. The traditional way that the socket flags are applied is
4490          * AFTER protocol processing. We have made a change to the
4491          * sys/kern/uipc_socket.c module to reverse this but this MUST be in
4492          * place if the socket API for SCTP is to work properly.
4493          */
4494
4495         int error = 0;
4496         struct sctp_inpcb *inp;
4497
4498         inp = (struct sctp_inpcb *)so->so_pcb;
4499         if (inp == 0) {
4500                 /* I made the same as TCP since we are not setup? */
4501                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4502                 return (ECONNRESET);
4503         }
4504         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
4505                 /* See if we have a listener */
4506                 struct sctp_inpcb *tinp;
4507                 union sctp_sockstore store, *sp;
4508
4509                 sp = &store;
4510                 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
4511                         /* not bound all */
4512                         struct sctp_laddr *laddr;
4513
4514                         LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4515                                 memcpy(&store, &laddr->ifa->address, sizeof(store));
4516                                 sp->sin.sin_port = inp->sctp_lport;
4517                                 tinp = sctp_pcb_findep(&sp->sa, 0, 0, inp->def_vrf_id);
4518                                 if (tinp && (tinp != inp) &&
4519                                     ((tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) == 0) &&
4520                                     ((tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
4521                                     (tinp->sctp_socket->so_qlimit)) {
4522                                         /*
4523                                          * we have a listener already and
4524                                          * its not this inp.
4525                                          */
4526                                         SCTP_INP_DECR_REF(tinp);
4527                                         return (EADDRINUSE);
4528                                 } else if (tinp) {
4529                                         SCTP_INP_DECR_REF(tinp);
4530                                 }
4531                         }
4532                 } else {
4533                         /* Setup a local addr bound all */
4534                         memset(&store, 0, sizeof(store));
4535                         store.sin.sin_port = inp->sctp_lport;
4536 #ifdef INET6
4537                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
4538                                 store.sa.sa_family = AF_INET6;
4539                                 store.sa.sa_len = sizeof(struct sockaddr_in6);
4540                         }
4541 #endif
4542                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
4543                                 store.sa.sa_family = AF_INET;
4544                                 store.sa.sa_len = sizeof(struct sockaddr_in);
4545                         }
4546                         tinp = sctp_pcb_findep(&sp->sa, 0, 0, inp->def_vrf_id);
4547                         if (tinp && (tinp != inp) &&
4548                             ((tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) == 0) &&
4549                             ((tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
4550                             (tinp->sctp_socket->so_qlimit)) {
4551                                 /*
4552                                  * we have a listener already and its not
4553                                  * this inp.
4554                                  */
4555                                 SCTP_INP_DECR_REF(tinp);
4556                                 return (EADDRINUSE);
4557                         } else if (tinp) {
4558                                 SCTP_INP_DECR_REF(inp);
4559                         }
4560                 }
4561         }
4562         SCTP_INP_RLOCK(inp);
4563 #ifdef SCTP_LOCK_LOGGING
4564         if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOCK_LOGGING_ENABLE) {
4565                 sctp_log_lock(inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_SOCK);
4566         }
4567 #endif
4568         SOCK_LOCK(so);
4569         error = solisten_proto_check(so);
4570         if (error) {
4571                 SOCK_UNLOCK(so);
4572                 SCTP_INP_RUNLOCK(inp);
4573                 return (error);
4574         }
4575         if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
4576             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
4577                 /*
4578                  * The unlucky case - We are in the tcp pool with this guy.
4579                  * - Someone else is in the main inp slot. - We must move
4580                  * this guy (the listener) to the main slot - We must then
4581                  * move the guy that was listener to the TCP Pool.
4582                  */
4583                 if (sctp_swap_inpcb_for_listen(inp)) {
4584                         goto in_use;
4585                 }
4586         }
4587         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
4588             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
4589                 /* We are already connected AND the TCP model */
4590 in_use:
4591                 SCTP_INP_RUNLOCK(inp);
4592                 SOCK_UNLOCK(so);
4593                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
4594                 return (EADDRINUSE);
4595         }
4596         SCTP_INP_RUNLOCK(inp);
4597         if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4598                 /* We must do a bind. */
4599                 SOCK_UNLOCK(so);
4600                 if ((error = sctp_inpcb_bind(so, NULL, NULL, p))) {
4601                         /* bind error, probably perm */
4602                         return (error);
4603                 }
4604                 SOCK_LOCK(so);
4605         }
4606         /* It appears for 7.0 and on, we must always call this. */
4607         solisten_proto(so, backlog);
4608         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
4609                 /* remove the ACCEPTCONN flag for one-to-many sockets */
4610                 so->so_options &= ~SO_ACCEPTCONN;
4611         }
4612         if (backlog == 0) {
4613                 /* turning off listen */
4614                 so->so_options &= ~SO_ACCEPTCONN;
4615         }
4616         SOCK_UNLOCK(so);
4617         return (error);
4618 }
4619
4620 static int sctp_defered_wakeup_cnt = 0;
4621
4622 int
4623 sctp_accept(struct socket *so, struct sockaddr **addr)
4624 {
4625         struct sctp_tcb *stcb;
4626         struct sctp_inpcb *inp;
4627         union sctp_sockstore store;
4628
4629 #ifdef INET6
4630         int error;
4631
4632 #endif
4633         inp = (struct sctp_inpcb *)so->so_pcb;
4634
4635         if (inp == 0) {
4636                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4637                 return (ECONNRESET);
4638         }
4639         SCTP_INP_RLOCK(inp);
4640         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
4641                 SCTP_INP_RUNLOCK(inp);
4642                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
4643                 return (EOPNOTSUPP);
4644         }
4645         if (so->so_state & SS_ISDISCONNECTED) {
4646                 SCTP_INP_RUNLOCK(inp);
4647                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ECONNABORTED);
4648                 return (ECONNABORTED);
4649         }
4650         stcb = LIST_FIRST(&inp->sctp_asoc_list);
4651         if (stcb == NULL) {
4652                 SCTP_INP_RUNLOCK(inp);
4653                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4654                 return (ECONNRESET);
4655         }
4656         SCTP_TCB_LOCK(stcb);
4657         SCTP_INP_RUNLOCK(inp);
4658         store = stcb->asoc.primary_destination->ro._l_addr;
4659         stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4660         SCTP_TCB_UNLOCK(stcb);
4661         switch (store.sa.sa_family) {
4662         case AF_INET:
4663                 {
4664                         struct sockaddr_in *sin;
4665
4666                         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
4667                         if (sin == NULL)
4668                                 return (ENOMEM);
4669                         sin->sin_family = AF_INET;
4670                         sin->sin_len = sizeof(*sin);
4671                         sin->sin_port = ((struct sockaddr_in *)&store)->sin_port;
4672                         sin->sin_addr = ((struct sockaddr_in *)&store)->sin_addr;
4673                         *addr = (struct sockaddr *)sin;
4674                         break;
4675                 }
4676 #ifdef INET6
4677         case AF_INET6:
4678                 {
4679                         struct sockaddr_in6 *sin6;
4680
4681                         SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
4682                         if (sin6 == NULL)
4683                                 return (ENOMEM);
4684                         sin6->sin6_family = AF_INET6;
4685                         sin6->sin6_len = sizeof(*sin6);
4686                         sin6->sin6_port = ((struct sockaddr_in6 *)&store)->sin6_port;
4687
4688                         sin6->sin6_addr = ((struct sockaddr_in6 *)&store)->sin6_addr;
4689                         if ((error = sa6_recoverscope(sin6)) != 0) {
4690                                 SCTP_FREE_SONAME(sin6);
4691                                 return (error);
4692                         }
4693                         *addr = (struct sockaddr *)sin6;
4694                         break;
4695                 }
4696 #endif
4697         default:
4698                 /* TSNH */
4699                 break;
4700         }
4701         /* Wake any delayed sleep action */
4702         if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) {
4703                 SCTP_INP_WLOCK(inp);
4704                 inp->sctp_flags &= ~SCTP_PCB_FLAGS_DONT_WAKE;
4705                 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT) {
4706                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
4707                         SCTP_INP_WUNLOCK(inp);
4708                         SOCKBUF_LOCK(&inp->sctp_socket->so_snd);
4709                         if (sowriteable(inp->sctp_socket)) {
4710                                 sowwakeup_locked(inp->sctp_socket);
4711                         } else {
4712                                 SOCKBUF_UNLOCK(&inp->sctp_socket->so_snd);
4713                         }
4714                         SCTP_INP_WLOCK(inp);
4715                 }
4716                 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT) {
4717                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
4718                         SCTP_INP_WUNLOCK(inp);
4719                         SOCKBUF_LOCK(&inp->sctp_socket->so_rcv);
4720                         if (soreadable(inp->sctp_socket)) {
4721                                 sctp_defered_wakeup_cnt++;
4722                                 sorwakeup_locked(inp->sctp_socket);
4723                         } else {
4724                                 SOCKBUF_UNLOCK(&inp->sctp_socket->so_rcv);
4725                         }
4726                         SCTP_INP_WLOCK(inp);
4727                 }
4728                 SCTP_INP_WUNLOCK(inp);
4729         }
4730         if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
4731                 SCTP_TCB_LOCK(stcb);
4732                 sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_7);
4733         }
4734         return (0);
4735 }
4736
4737 int
4738 sctp_ingetaddr(struct socket *so, struct sockaddr **addr)
4739 {
4740         struct sockaddr_in *sin;
4741         uint32_t vrf_id;
4742         struct sctp_inpcb *inp;
4743         struct sctp_ifa *sctp_ifa;
4744
4745         /*
4746          * Do the malloc first in case it blocks.
4747          */
4748         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
4749         if (sin == NULL)
4750                 return (ENOMEM);
4751         sin->sin_family = AF_INET;
4752         sin->sin_len = sizeof(*sin);
4753         inp = (struct sctp_inpcb *)so->so_pcb;
4754         if (!inp) {
4755                 SCTP_FREE_SONAME(sin);
4756                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4757                 return ECONNRESET;
4758         }
4759         SCTP_INP_RLOCK(inp);
4760         sin->sin_port = inp->sctp_lport;
4761         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
4762                 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4763                         struct sctp_tcb *stcb;
4764                         struct sockaddr_in *sin_a;
4765                         struct sctp_nets *net;
4766                         int fnd;
4767
4768                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
4769                         if (stcb == NULL) {
4770                                 goto notConn;
4771                         }
4772                         fnd = 0;
4773                         sin_a = NULL;
4774                         SCTP_TCB_LOCK(stcb);
4775                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
4776                                 sin_a = (struct sockaddr_in *)&net->ro._l_addr;
4777                                 if (sin_a == NULL)
4778                                         /* this will make coverity happy */
4779                                         continue;
4780
4781                                 if (sin_a->sin_family == AF_INET) {
4782                                         fnd = 1;
4783                                         break;
4784                                 }
4785                         }
4786                         if ((!fnd) || (sin_a == NULL)) {
4787                                 /* punt */
4788                                 SCTP_TCB_UNLOCK(stcb);
4789                                 goto notConn;
4790                         }
4791                         vrf_id = inp->def_vrf_id;
4792                         sctp_ifa = sctp_source_address_selection(inp,
4793                             stcb,
4794                             (sctp_route_t *) & net->ro,
4795                             net, 0, vrf_id);
4796                         if (sctp_ifa) {
4797                                 sin->sin_addr = sctp_ifa->address.sin.sin_addr;
4798                                 sctp_free_ifa(sctp_ifa);
4799                         }
4800                         SCTP_TCB_UNLOCK(stcb);
4801                 } else {
4802                         /* For the bound all case you get back 0 */
4803         notConn:
4804                         sin->sin_addr.s_addr = 0;
4805                 }
4806
4807         } else {
4808                 /* Take the first IPv4 address in the list */
4809                 struct sctp_laddr *laddr;
4810                 int fnd = 0;
4811
4812                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4813                         if (laddr->ifa->address.sa.sa_family == AF_INET) {
4814                                 struct sockaddr_in *sin_a;
4815
4816                                 sin_a = (struct sockaddr_in *)&laddr->ifa->address.sa;
4817                                 sin->sin_addr = sin_a->sin_addr;
4818                                 fnd = 1;
4819                                 break;
4820                         }
4821                 }
4822                 if (!fnd) {
4823                         SCTP_FREE_SONAME(sin);
4824                         SCTP_INP_RUNLOCK(inp);
4825                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
4826                         return ENOENT;
4827                 }
4828         }
4829         SCTP_INP_RUNLOCK(inp);
4830         (*addr) = (struct sockaddr *)sin;
4831         return (0);
4832 }
4833
4834 int
4835 sctp_peeraddr(struct socket *so, struct sockaddr **addr)
4836 {
4837         struct sockaddr_in *sin = (struct sockaddr_in *)*addr;
4838         int fnd;
4839         struct sockaddr_in *sin_a;
4840         struct sctp_inpcb *inp;
4841         struct sctp_tcb *stcb;
4842         struct sctp_nets *net;
4843
4844         /* Do the malloc first in case it blocks. */
4845         inp = (struct sctp_inpcb *)so->so_pcb;
4846         if ((inp == NULL) ||
4847             ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) {
4848                 /* UDP type and listeners will drop out here */
4849                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
4850                 return (ENOTCONN);
4851         }
4852         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
4853         if (sin == NULL)
4854                 return (ENOMEM);
4855         sin->sin_family = AF_INET;
4856         sin->sin_len = sizeof(*sin);
4857
4858         /* We must recapture incase we blocked */
4859         inp = (struct sctp_inpcb *)so->so_pcb;
4860         if (!inp) {
4861                 SCTP_FREE_SONAME(sin);
4862                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4863                 return ECONNRESET;
4864         }
4865         SCTP_INP_RLOCK(inp);
4866         stcb = LIST_FIRST(&inp->sctp_asoc_list);
4867         if (stcb) {
4868                 SCTP_TCB_LOCK(stcb);
4869         }
4870         SCTP_INP_RUNLOCK(inp);
4871         if (stcb == NULL) {
4872                 SCTP_FREE_SONAME(sin);
4873                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4874                 return ECONNRESET;
4875         }
4876         fnd = 0;
4877         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
4878                 sin_a = (struct sockaddr_in *)&net->ro._l_addr;
4879                 if (sin_a->sin_family == AF_INET) {
4880                         fnd = 1;
4881                         sin->sin_port = stcb->rport;
4882                         sin->sin_addr = sin_a->sin_addr;
4883                         break;
4884                 }
4885         }
4886         SCTP_TCB_UNLOCK(stcb);
4887         if (!fnd) {
4888                 /* No IPv4 address */
4889                 SCTP_FREE_SONAME(sin);
4890                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
4891                 return ENOENT;
4892         }
4893         (*addr) = (struct sockaddr *)sin;
4894         return (0);
4895 }
4896
4897 struct pr_usrreqs sctp_usrreqs = {
4898         .pru_abort = sctp_abort,
4899         .pru_accept = sctp_accept,
4900         .pru_attach = sctp_attach,
4901         .pru_bind = sctp_bind,
4902         .pru_connect = sctp_connect,
4903         .pru_control = in_control,
4904         .pru_close = sctp_close,
4905         .pru_detach = sctp_close,
4906         .pru_sopoll = sopoll_generic,
4907         .pru_flush = sctp_flush,
4908         .pru_disconnect = sctp_disconnect,
4909         .pru_listen = sctp_listen,
4910         .pru_peeraddr = sctp_peeraddr,
4911         .pru_send = sctp_sendm,
4912         .pru_shutdown = sctp_shutdown,
4913         .pru_sockaddr = sctp_ingetaddr,
4914         .pru_sosend = sctp_sosend,
4915         .pru_soreceive = sctp_soreceive
4916 };