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/udp.h>
  52
  53
  54
  55 extern struct sctp_cc_functions sctp_cc_functions[];
  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 > 0) &&
 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                                 if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
2345                                         /* It's unconfirmed */
2346                                         paddri->spinfo_state = SCTP_UNCONFIRMED;
2347                                 } else if (net->dest_state & SCTP_ADDR_REACHABLE) {
2348                                         /* It's active */
2349                                         paddri->spinfo_state = SCTP_ACTIVE;
2350                                 } else {
2351                                         /* It's inactive */
2352                                         paddri->spinfo_state = SCTP_INACTIVE;
2353                                 }
2354                                 paddri->spinfo_cwnd = net->cwnd;
2355                                 paddri->spinfo_srtt = ((net->lastsa >> 2) + net->lastsv) >> 1;
2356                                 paddri->spinfo_rto = net->RTO;
2357                                 paddri->spinfo_assoc_id = sctp_get_associd(stcb);
2358                                 SCTP_TCB_UNLOCK(stcb);
2359                         } else {
2360                                 if (stcb) {
2361                                         SCTP_TCB_UNLOCK(stcb);
2362                                 }
2363                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
2364                                 error = ENOENT;
2365                         }
2366                         *optsize = sizeof(struct sctp_paddrinfo);
2367                 }
2368                 break;
2369         case SCTP_PCB_STATUS:
2370                 {
2371                         struct sctp_pcbinfo *spcb;
2372
2373                         SCTP_CHECK_AND_CAST(spcb, optval, struct sctp_pcbinfo, *optsize);
2374                         sctp_fill_pcbinfo(spcb);
2375                         *optsize = sizeof(struct sctp_pcbinfo);
2376                 }
2377                 break;
2378
2379         case SCTP_STATUS:
2380                 {
2381                         struct sctp_nets *net;
2382                         struct sctp_status *sstat;
2383
2384                         SCTP_CHECK_AND_CAST(sstat, optval, struct sctp_status, *optsize);
2385                         SCTP_FIND_STCB(inp, stcb, sstat->sstat_assoc_id);
2386
2387                         if (stcb == NULL) {
2388                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2389                                 error = EINVAL;
2390                                 break;
2391                         }
2392                         /*
2393                          * I think passing the state is fine since
2394                          * sctp_constants.h will be available to the user
2395                          * land.
2396                          */
2397                         sstat->sstat_state = stcb->asoc.state;
2398                         sstat->sstat_assoc_id = sctp_get_associd(stcb);
2399                         sstat->sstat_rwnd = stcb->asoc.peers_rwnd;
2400                         sstat->sstat_unackdata = stcb->asoc.sent_queue_cnt;
2401                         /*
2402                          * We can't include chunks that have been passed to
2403                          * the socket layer. Only things in queue.
2404                          */
2405                         sstat->sstat_penddata = (stcb->asoc.cnt_on_reasm_queue +
2406                             stcb->asoc.cnt_on_all_streams);
2407
2408
2409                         sstat->sstat_instrms = stcb->asoc.streamincnt;
2410                         sstat->sstat_outstrms = stcb->asoc.streamoutcnt;
2411                         sstat->sstat_fragmentation_point = sctp_get_frag_point(stcb, &stcb->asoc);
2412                         memcpy(&sstat->sstat_primary.spinfo_address,
2413                             &stcb->asoc.primary_destination->ro._l_addr,
2414                             ((struct sockaddr *)(&stcb->asoc.primary_destination->ro._l_addr))->sa_len);
2415                         net = stcb->asoc.primary_destination;
2416                         ((struct sockaddr_in *)&sstat->sstat_primary.spinfo_address)->sin_port = stcb->rport;
2417                         /*
2418                          * Again the user can get info from sctp_constants.h
2419                          * for what the state of the network is.
2420                          */
2421                         if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
2422                                 /* It's unconfirmed */
2423                                 sstat->sstat_primary.spinfo_state = SCTP_UNCONFIRMED;
2424                         } else if (net->dest_state & SCTP_ADDR_REACHABLE) {
2425                                 /* It's active */
2426                                 sstat->sstat_primary.spinfo_state = SCTP_ACTIVE;
2427                         } else {
2428                                 /* It's inactive */
2429                                 sstat->sstat_primary.spinfo_state = SCTP_INACTIVE;
2430                         }
2431                         sstat->sstat_primary.spinfo_cwnd = net->cwnd;
2432                         sstat->sstat_primary.spinfo_srtt = net->lastsa;
2433                         sstat->sstat_primary.spinfo_rto = net->RTO;
2434                         sstat->sstat_primary.spinfo_mtu = net->mtu;
2435                         sstat->sstat_primary.spinfo_assoc_id = sctp_get_associd(stcb);
2436                         SCTP_TCB_UNLOCK(stcb);
2437                         *optsize = sizeof(*sstat);
2438                 }
2439                 break;
2440         case SCTP_RTOINFO:
2441                 {
2442                         struct sctp_rtoinfo *srto;
2443
2444                         SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, *optsize);
2445                         SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id);
2446
2447                         if (stcb) {
2448                                 srto->srto_initial = stcb->asoc.initial_rto;
2449                                 srto->srto_max = stcb->asoc.maxrto;
2450                                 srto->srto_min = stcb->asoc.minrto;
2451                                 SCTP_TCB_UNLOCK(stcb);
2452                         } else {
2453                                 SCTP_INP_RLOCK(inp);
2454                                 srto->srto_initial = inp->sctp_ep.initial_rto;
2455                                 srto->srto_max = inp->sctp_ep.sctp_maxrto;
2456                                 srto->srto_min = inp->sctp_ep.sctp_minrto;
2457                                 SCTP_INP_RUNLOCK(inp);
2458                         }
2459                         *optsize = sizeof(*srto);
2460                 }
2461                 break;
2462         case SCTP_TIMEOUTS:
2463                 {
2464                         struct sctp_timeouts *stimo;
2465
2466                         SCTP_CHECK_AND_CAST(stimo, optval, struct sctp_timeouts, *optsize);
2467                         SCTP_FIND_STCB(inp, stcb, stimo->stimo_assoc_id);
2468
2469                         if (stcb) {
2470                                 stimo->stimo_init = stcb->asoc.timoinit;
2471                                 stimo->stimo_data = stcb->asoc.timodata;
2472                                 stimo->stimo_sack = stcb->asoc.timosack;
2473                                 stimo->stimo_shutdown = stcb->asoc.timoshutdown;
2474                                 stimo->stimo_heartbeat = stcb->asoc.timoheartbeat;
2475                                 stimo->stimo_cookie = stcb->asoc.timocookie;
2476                                 stimo->stimo_shutdownack = stcb->asoc.timoshutdownack;
2477                                 SCTP_TCB_UNLOCK(stcb);
2478                         } else {
2479                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2480                                 error = EINVAL;
2481                         }
2482                         *optsize = sizeof(*stimo);
2483                 }
2484                 break;
2485         case SCTP_ASSOCINFO:
2486                 {
2487                         struct sctp_assocparams *sasoc;
2488                         uint32_t oldval;
2489
2490                         SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, *optsize);
2491                         SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id);
2492
2493                         if (stcb) {
2494                                 oldval = sasoc->sasoc_cookie_life;
2495                                 sasoc->sasoc_cookie_life = TICKS_TO_MSEC(stcb->asoc.cookie_life);
2496                                 sasoc->sasoc_asocmaxrxt = stcb->asoc.max_send_times;
2497                                 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets;
2498                                 sasoc->sasoc_peer_rwnd = stcb->asoc.peers_rwnd;
2499                                 sasoc->sasoc_local_rwnd = stcb->asoc.my_rwnd;
2500                                 SCTP_TCB_UNLOCK(stcb);
2501                         } else {
2502                                 SCTP_INP_RLOCK(inp);
2503                                 sasoc->sasoc_cookie_life = TICKS_TO_MSEC(inp->sctp_ep.def_cookie_life);
2504                                 sasoc->sasoc_asocmaxrxt = inp->sctp_ep.max_send_times;
2505                                 sasoc->sasoc_number_peer_destinations = 0;
2506                                 sasoc->sasoc_peer_rwnd = 0;
2507                                 sasoc->sasoc_local_rwnd = sbspace(&inp->sctp_socket->so_rcv);
2508                                 SCTP_INP_RUNLOCK(inp);
2509                         }
2510                         *optsize = sizeof(*sasoc);
2511                 }
2512                 break;
2513         case SCTP_DEFAULT_SEND_PARAM:
2514                 {
2515                         struct sctp_sndrcvinfo *s_info;
2516
2517                         SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, *optsize);
2518                         SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id);
2519
2520                         if (stcb) {
2521                                 memcpy(s_info, &stcb->asoc.def_send, sizeof(stcb->asoc.def_send));
2522                                 SCTP_TCB_UNLOCK(stcb);
2523                         } else {
2524                                 SCTP_INP_RLOCK(inp);
2525                                 memcpy(s_info, &inp->def_send, sizeof(inp->def_send));
2526                                 SCTP_INP_RUNLOCK(inp);
2527                         }
2528                         *optsize = sizeof(*s_info);
2529                 }
2530                 break;
2531         case SCTP_INITMSG:
2532                 {
2533                         struct sctp_initmsg *sinit;
2534
2535                         SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, *optsize);
2536                         SCTP_INP_RLOCK(inp);
2537                         sinit->sinit_num_ostreams = inp->sctp_ep.pre_open_stream_count;
2538                         sinit->sinit_max_instreams = inp->sctp_ep.max_open_streams_intome;
2539                         sinit->sinit_max_attempts = inp->sctp_ep.max_init_times;
2540                         sinit->sinit_max_init_timeo = inp->sctp_ep.initial_init_rto_max;
2541                         SCTP_INP_RUNLOCK(inp);
2542                         *optsize = sizeof(*sinit);
2543                 }
2544                 break;
2545         case SCTP_PRIMARY_ADDR:
2546                 /* we allow a "get" operation on this */
2547                 {
2548                         struct sctp_setprim *ssp;
2549
2550                         SCTP_CHECK_AND_CAST(ssp, optval, struct sctp_setprim, *optsize);
2551                         SCTP_FIND_STCB(inp, stcb, ssp->ssp_assoc_id);
2552
2553                         if (stcb) {
2554                                 /* simply copy out the sockaddr_storage... */
2555                                 int len;
2556
2557                                 len = *optsize;
2558                                 if (len > stcb->asoc.primary_destination->ro._l_addr.sa.sa_len)
2559                                         len = stcb->asoc.primary_destination->ro._l_addr.sa.sa_len;
2560
2561                                 memcpy(&ssp->ssp_addr,
2562                                     &stcb->asoc.primary_destination->ro._l_addr,
2563                                     len);
2564                                 SCTP_TCB_UNLOCK(stcb);
2565                         } else {
2566                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2567                                 error = EINVAL;
2568                         }
2569                         *optsize = sizeof(*ssp);
2570                 }
2571                 break;
2572
2573         case SCTP_HMAC_IDENT:
2574                 {
2575                         struct sctp_hmacalgo *shmac;
2576                         sctp_hmaclist_t *hmaclist;
2577                         uint32_t size;
2578                         int i;
2579
2580                         SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, *optsize);
2581
2582                         SCTP_INP_RLOCK(inp);
2583                         hmaclist = inp->sctp_ep.local_hmacs;
2584                         if (hmaclist == NULL) {
2585                                 /* no HMACs to return */
2586                                 *optsize = sizeof(*shmac);
2587                                 SCTP_INP_RUNLOCK(inp);
2588                                 break;
2589                         }
2590                         /* is there room for all of the hmac ids? */
2591                         size = sizeof(*shmac) + (hmaclist->num_algo *
2592                             sizeof(shmac->shmac_idents[0]));
2593                         if ((size_t)(*optsize) < size) {
2594                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2595                                 error = EINVAL;
2596                                 SCTP_INP_RUNLOCK(inp);
2597                                 break;
2598                         }
2599                         /* copy in the list */
2600                         shmac->shmac_number_of_idents = hmaclist->num_algo;
2601                         for (i = 0; i < hmaclist->num_algo; i++) {
2602                                 shmac->shmac_idents[i] = hmaclist->hmac[i];
2603                         }
2604                         SCTP_INP_RUNLOCK(inp);
2605                         *optsize = size;
2606                         break;
2607                 }
2608         case SCTP_AUTH_ACTIVE_KEY:
2609                 {
2610                         struct sctp_authkeyid *scact;
2611
2612                         SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, *optsize);
2613                         SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id);
2614
2615                         if (stcb) {
2616                                 /* get the active key on the assoc */
2617                                 scact->scact_keynumber = stcb->asoc.authinfo.active_keyid;
2618                                 SCTP_TCB_UNLOCK(stcb);
2619                         } else {
2620                                 /* get the endpoint active key */
2621                                 SCTP_INP_RLOCK(inp);
2622                                 scact->scact_keynumber = inp->sctp_ep.default_keyid;
2623                                 SCTP_INP_RUNLOCK(inp);
2624                         }
2625                         *optsize = sizeof(*scact);
2626                         break;
2627                 }
2628         case SCTP_LOCAL_AUTH_CHUNKS:
2629                 {
2630                         struct sctp_authchunks *sac;
2631                         sctp_auth_chklist_t *chklist = NULL;
2632                         size_t size = 0;
2633
2634                         SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize);
2635                         SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id);
2636
2637                         if (stcb) {
2638                                 /* get off the assoc */
2639                                 chklist = stcb->asoc.local_auth_chunks;
2640                                 /* is there enough space? */
2641                                 size = sctp_auth_get_chklist_size(chklist);
2642                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2643                                         error = EINVAL;
2644                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2645                                 } else {
2646                                         /* copy in the chunks */
2647                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2648                                 }
2649                                 SCTP_TCB_UNLOCK(stcb);
2650                         } else {
2651                                 /* get off the endpoint */
2652                                 SCTP_INP_RLOCK(inp);
2653                                 chklist = inp->sctp_ep.local_auth_chunks;
2654                                 /* is there enough space? */
2655                                 size = sctp_auth_get_chklist_size(chklist);
2656                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2657                                         error = EINVAL;
2658                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2659                                 } else {
2660                                         /* copy in the chunks */
2661                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2662                                 }
2663                                 SCTP_INP_RUNLOCK(inp);
2664                         }
2665                         *optsize = sizeof(struct sctp_authchunks) + size;
2666                         break;
2667                 }
2668         case SCTP_PEER_AUTH_CHUNKS:
2669                 {
2670                         struct sctp_authchunks *sac;
2671                         sctp_auth_chklist_t *chklist = NULL;
2672                         size_t size = 0;
2673
2674                         SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize);
2675                         SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id);
2676
2677                         if (stcb) {
2678                                 /* get off the assoc */
2679                                 chklist = stcb->asoc.peer_auth_chunks;
2680                                 /* is there enough space? */
2681                                 size = sctp_auth_get_chklist_size(chklist);
2682                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2683                                         error = EINVAL;
2684                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2685                                 } else {
2686                                         /* copy in the chunks */
2687                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2688                                 }
2689                                 SCTP_TCB_UNLOCK(stcb);
2690                         } else {
2691                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
2692                                 error = ENOENT;
2693                         }
2694                         *optsize = sizeof(struct sctp_authchunks) + size;
2695                         break;
2696                 }
2697
2698
2699         default:
2700                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
2701                 error = ENOPROTOOPT;
2702                 *optsize = 0;
2703                 break;
2704         }                       /* end switch (sopt->sopt_name) */
2705         return (error);
2706 }
2707
2708 static int
2709 sctp_setopt(struct socket *so, int optname, void *optval, size_t optsize,
2710     void *p)
2711 {
2712         int error, set_opt;
2713         uint32_t *mopt;
2714         struct sctp_tcb *stcb = NULL;
2715         struct sctp_inpcb *inp = NULL;
2716         uint32_t vrf_id;
2717
2718         if (optval == NULL) {
2719                 SCTP_PRINTF("optval is NULL\n");
2720                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2721                 return (EINVAL);
2722         }
2723         inp = (struct sctp_inpcb *)so->so_pcb;
2724         if (inp == 0) {
2725                 SCTP_PRINTF("inp is NULL?\n");
2726                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2727                 return EINVAL;
2728         }
2729         vrf_id = inp->def_vrf_id;
2730
2731         error = 0;
2732         switch (optname) {
2733         case SCTP_NODELAY:
2734         case SCTP_AUTOCLOSE:
2735         case SCTP_AUTO_ASCONF:
2736         case SCTP_EXPLICIT_EOR:
2737         case SCTP_DISABLE_FRAGMENTS:
2738         case SCTP_USE_EXT_RCVINFO:
2739         case SCTP_I_WANT_MAPPED_V4_ADDR:
2740                 /* copy in the option value */
2741                 SCTP_CHECK_AND_CAST(mopt, optval, uint32_t, optsize);
2742                 set_opt = 0;
2743                 if (error)
2744                         break;
2745                 switch (optname) {
2746                 case SCTP_DISABLE_FRAGMENTS:
2747                         set_opt = SCTP_PCB_FLAGS_NO_FRAGMENT;
2748                         break;
2749                 case SCTP_AUTO_ASCONF:
2750                         /*
2751                          * NOTE: we don't really support this flag
2752                          */
2753                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
2754                                 /* only valid for bound all sockets */
2755                                 set_opt = SCTP_PCB_FLAGS_AUTO_ASCONF;
2756                         } else {
2757                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2758                                 return (EINVAL);
2759                         }
2760                         break;
2761                 case SCTP_EXPLICIT_EOR:
2762                         set_opt = SCTP_PCB_FLAGS_EXPLICIT_EOR;
2763                         break;
2764                 case SCTP_USE_EXT_RCVINFO:
2765                         set_opt = SCTP_PCB_FLAGS_EXT_RCVINFO;
2766                         break;
2767                 case SCTP_I_WANT_MAPPED_V4_ADDR:
2768                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2769                                 set_opt = SCTP_PCB_FLAGS_NEEDS_MAPPED_V4;
2770                         } else {
2771                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2772                                 return (EINVAL);
2773                         }
2774                         break;
2775                 case SCTP_NODELAY:
2776                         set_opt = SCTP_PCB_FLAGS_NODELAY;
2777                         break;
2778                 case SCTP_AUTOCLOSE:
2779                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2780                             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
2781                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2782                                 return (EINVAL);
2783                         }
2784                         set_opt = SCTP_PCB_FLAGS_AUTOCLOSE;
2785                         /*
2786                          * The value is in ticks. Note this does not effect
2787                          * old associations, only new ones.
2788                          */
2789                         inp->sctp_ep.auto_close_time = SEC_TO_TICKS(*mopt);
2790                         break;
2791                 }
2792                 SCTP_INP_WLOCK(inp);
2793                 if (*mopt != 0) {
2794                         sctp_feature_on(inp, set_opt);
2795                 } else {
2796                         sctp_feature_off(inp, set_opt);
2797                 }
2798                 SCTP_INP_WUNLOCK(inp);
2799                 break;
2800         case SCTP_REUSE_PORT:
2801                 {
2802                         SCTP_CHECK_AND_CAST(mopt, optval, uint32_t, optsize);
2803                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
2804                                 /* Can't set it after we are bound */
2805                                 error = EINVAL;
2806                                 break;
2807                         }
2808                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE)) {
2809                                 /* Can't do this for a 1-m socket */
2810                                 error = EINVAL;
2811                                 break;
2812                         }
2813                         if (optval)
2814                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE);
2815                         else
2816                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE);
2817                 }
2818                 break;
2819         case SCTP_PARTIAL_DELIVERY_POINT:
2820                 {
2821                         uint32_t *value;
2822
2823                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, optsize);
2824                         if (*value > SCTP_SB_LIMIT_RCV(so)) {
2825                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2826                                 error = EINVAL;
2827                                 break;
2828                         }
2829                         inp->partial_delivery_point = *value;
2830                 }
2831                 break;
2832         case SCTP_FRAGMENT_INTERLEAVE:
2833                 /* not yet until we re-write sctp_recvmsg() */
2834                 {
2835                         uint32_t *level;
2836
2837                         SCTP_CHECK_AND_CAST(level, optval, uint32_t, optsize);
2838                         if (*level == SCTP_FRAG_LEVEL_2) {
2839                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2840                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2841                         } else if (*level == SCTP_FRAG_LEVEL_1) {
2842                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2843                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2844                         } else if (*level == SCTP_FRAG_LEVEL_0) {
2845                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2846                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2847
2848                         } else {
2849                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2850                                 error = EINVAL;
2851                         }
2852                 }
2853                 break;
2854         case SCTP_CMT_ON_OFF:
2855                 if (SCTP_BASE_SYSCTL(sctp_cmt_on_off)) {
2856                         struct sctp_assoc_value *av;
2857
2858                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2859                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2860                         if (stcb) {
2861                                 stcb->asoc.sctp_cmt_on_off = av->assoc_value;
2862                                 if (stcb->asoc.sctp_cmt_on_off > 2) {
2863                                         stcb->asoc.sctp_cmt_on_off = 2;
2864                                 }
2865                                 SCTP_TCB_UNLOCK(stcb);
2866                         } else {
2867                                 SCTP_INP_WLOCK(inp);
2868                                 inp->sctp_cmt_on_off = av->assoc_value;
2869                                 if (inp->sctp_cmt_on_off > 2) {
2870                                         inp->sctp_cmt_on_off = 2;
2871                                 }
2872                                 SCTP_INP_WUNLOCK(inp);
2873                         }
2874                 } else {
2875                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
2876                         error = ENOPROTOOPT;
2877                 }
2878                 break;
2879                 /* JRS - Set socket option for pluggable congestion control */
2880         case SCTP_PLUGGABLE_CC:
2881                 {
2882                         struct sctp_assoc_value *av;
2883
2884                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2885                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2886                         if (stcb) {
2887                                 switch (av->assoc_value) {
2888                                 case SCTP_CC_RFC2581:
2889                                 case SCTP_CC_HSTCP:
2890                                 case SCTP_CC_HTCP:
2891                                         stcb->asoc.cc_functions = sctp_cc_functions[av->assoc_value];
2892                                         stcb->asoc.congestion_control_module = av->assoc_value;
2893                                         break;
2894                                 default:
2895                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2896                                         error = EINVAL;
2897                                         break;
2898                                 }
2899                                 SCTP_TCB_UNLOCK(stcb);
2900                         } else {
2901                                 switch (av->assoc_value) {
2902                                 case SCTP_CC_RFC2581:
2903                                 case SCTP_CC_HSTCP:
2904                                 case SCTP_CC_HTCP:
2905                                         SCTP_INP_WLOCK(inp);
2906                                         inp->sctp_ep.sctp_default_cc_module = av->assoc_value;
2907                                         SCTP_INP_WUNLOCK(inp);
2908                                         break;
2909                                 default:
2910                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2911                                         error = EINVAL;
2912                                         break;
2913                                 };
2914                         }
2915                 }
2916                 break;
2917         case SCTP_CLR_STAT_LOG:
2918                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
2919                 error = EOPNOTSUPP;
2920                 break;
2921         case SCTP_CONTEXT:
2922                 {
2923                         struct sctp_assoc_value *av;
2924
2925                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2926                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2927
2928                         if (stcb) {
2929                                 stcb->asoc.context = av->assoc_value;
2930                                 SCTP_TCB_UNLOCK(stcb);
2931                         } else {
2932                                 SCTP_INP_WLOCK(inp);
2933                                 inp->sctp_context = av->assoc_value;
2934                                 SCTP_INP_WUNLOCK(inp);
2935                         }
2936                 }
2937                 break;
2938         case SCTP_VRF_ID:
2939                 {
2940                         uint32_t *default_vrfid;
2941
2942                         SCTP_CHECK_AND_CAST(default_vrfid, optval, uint32_t, optsize);
2943                         if (*default_vrfid > SCTP_MAX_VRF_ID) {
2944                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2945                                 error = EINVAL;
2946                                 break;
2947                         }
2948                         inp->def_vrf_id = *default_vrfid;
2949                         break;
2950                 }
2951         case SCTP_DEL_VRF_ID:
2952                 {
2953                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
2954                         error = EOPNOTSUPP;
2955                         break;
2956                 }
2957         case SCTP_ADD_VRF_ID:
2958                 {
2959                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
2960                         error = EOPNOTSUPP;
2961                         break;
2962                 }
2963         case SCTP_DELAYED_SACK:
2964                 {
2965                         struct sctp_sack_info *sack;
2966
2967                         SCTP_CHECK_AND_CAST(sack, optval, struct sctp_sack_info, optsize);
2968                         SCTP_FIND_STCB(inp, stcb, sack->sack_assoc_id);
2969                         if (sack->sack_delay) {
2970                                 if (sack->sack_delay > SCTP_MAX_SACK_DELAY)
2971                                         sack->sack_delay = SCTP_MAX_SACK_DELAY;
2972                         }
2973                         if (stcb) {
2974                                 if (sack->sack_delay) {
2975                                         if (MSEC_TO_TICKS(sack->sack_delay) < 1) {
2976                                                 sack->sack_delay = TICKS_TO_MSEC(1);
2977                                         }
2978                                         stcb->asoc.delayed_ack = sack->sack_delay;
2979                                 }
2980                                 if (sack->sack_freq) {
2981                                         stcb->asoc.sack_freq = sack->sack_freq;
2982                                 }
2983                                 SCTP_TCB_UNLOCK(stcb);
2984                         } else {
2985                                 SCTP_INP_WLOCK(inp);
2986                                 if (sack->sack_delay) {
2987                                         if (MSEC_TO_TICKS(sack->sack_delay) < 1) {
2988                                                 sack->sack_delay = TICKS_TO_MSEC(1);
2989                                         }
2990                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(sack->sack_delay);
2991                                 }
2992                                 if (sack->sack_freq) {
2993                                         inp->sctp_ep.sctp_sack_freq = sack->sack_freq;
2994                                 }
2995                                 SCTP_INP_WUNLOCK(inp);
2996                         }
2997                         break;
2998                 }
2999         case SCTP_AUTH_CHUNK:
3000                 {
3001                         struct sctp_authchunk *sauth;
3002
3003                         SCTP_CHECK_AND_CAST(sauth, optval, struct sctp_authchunk, optsize);
3004
3005                         SCTP_INP_WLOCK(inp);
3006                         if (sctp_auth_add_chunk(sauth->sauth_chunk, inp->sctp_ep.local_auth_chunks)) {
3007                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3008                                 error = EINVAL;
3009                         }
3010                         SCTP_INP_WUNLOCK(inp);
3011                         break;
3012                 }
3013         case SCTP_AUTH_KEY:
3014                 {
3015                         struct sctp_authkey *sca;
3016                         struct sctp_keyhead *shared_keys;
3017                         sctp_sharedkey_t *shared_key;
3018                         sctp_key_t *key = NULL;
3019                         size_t size;
3020
3021                         SCTP_CHECK_AND_CAST(sca, optval, struct sctp_authkey, optsize);
3022                         SCTP_FIND_STCB(inp, stcb, sca->sca_assoc_id);
3023                         size = optsize - sizeof(*sca);
3024
3025                         if (stcb) {
3026                                 /* set it on the assoc */
3027                                 shared_keys = &stcb->asoc.shared_keys;
3028                                 /* clear the cached keys for this key id */
3029                                 sctp_clear_cachedkeys(stcb, sca->sca_keynumber);
3030                                 /*
3031                                  * create the new shared key and
3032                                  * insert/replace it
3033                                  */
3034                                 if (size > 0) {
3035                                         key = sctp_set_key(sca->sca_key, (uint32_t) size);
3036                                         if (key == NULL) {
3037                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
3038                                                 error = ENOMEM;
3039                                                 SCTP_TCB_UNLOCK(stcb);
3040                                                 break;
3041                                         }
3042                                 }
3043                                 shared_key = sctp_alloc_sharedkey();
3044                                 if (shared_key == NULL) {
3045                                         sctp_free_key(key);
3046                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
3047                                         error = ENOMEM;
3048                                         SCTP_TCB_UNLOCK(stcb);
3049                                         break;
3050                                 }
3051                                 shared_key->key = key;
3052                                 shared_key->keyid = sca->sca_keynumber;
3053                                 error = sctp_insert_sharedkey(shared_keys, shared_key);
3054                                 SCTP_TCB_UNLOCK(stcb);
3055                         } else {
3056                                 /* set it on the endpoint */
3057                                 SCTP_INP_WLOCK(inp);
3058                                 shared_keys = &inp->sctp_ep.shared_keys;
3059                                 /*
3060                                  * clear the cached keys on all assocs for
3061                                  * this key id
3062                                  */
3063                                 sctp_clear_cachedkeys_ep(inp, sca->sca_keynumber);
3064                                 /*
3065                                  * create the new shared key and
3066                                  * insert/replace it
3067                                  */
3068                                 if (size > 0) {
3069                                         key = sctp_set_key(sca->sca_key, (uint32_t) size);
3070                                         if (key == NULL) {
3071                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
3072                                                 error = ENOMEM;
3073                                                 SCTP_INP_WUNLOCK(inp);
3074                                                 break;
3075                                         }
3076                                 }
3077                                 shared_key = sctp_alloc_sharedkey();
3078                                 if (shared_key == NULL) {
3079                                         sctp_free_key(key);
3080                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
3081                                         error = ENOMEM;
3082                                         SCTP_INP_WUNLOCK(inp);
3083                                         break;
3084                                 }
3085                                 shared_key->key = key;
3086                                 shared_key->keyid = sca->sca_keynumber;
3087                                 error = sctp_insert_sharedkey(shared_keys, shared_key);
3088                                 SCTP_INP_WUNLOCK(inp);
3089                         }
3090                         break;
3091                 }
3092         case SCTP_HMAC_IDENT:
3093                 {
3094                         struct sctp_hmacalgo *shmac;
3095                         sctp_hmaclist_t *hmaclist;
3096                         uint16_t hmacid;
3097                         uint32_t i;
3098
3099                         size_t found;
3100
3101                         SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, optsize);
3102                         if (optsize < sizeof(struct sctp_hmacalgo) + shmac->shmac_number_of_idents * sizeof(uint16_t)) {
3103                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3104                                 error = EINVAL;
3105                                 break;
3106                         }
3107                         hmaclist = sctp_alloc_hmaclist(shmac->shmac_number_of_idents);
3108                         if (hmaclist == NULL) {
3109                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
3110                                 error = ENOMEM;
3111                                 break;
3112                         }
3113                         for (i = 0; i < shmac->shmac_number_of_idents; i++) {
3114                                 hmacid = shmac->shmac_idents[i];
3115                                 if (sctp_auth_add_hmacid(hmaclist, hmacid)) {
3116                                          /* invalid HMACs were found */ ;
3117                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3118                                         error = EINVAL;
3119                                         sctp_free_hmaclist(hmaclist);
3120                                         goto sctp_set_hmac_done;
3121                                 }
3122                         }
3123                         found = 0;
3124                         for (i = 0; i < hmaclist->num_algo; i++) {
3125                                 if (hmaclist->hmac[i] == SCTP_AUTH_HMAC_ID_SHA1) {
3126                                         /* already in list */
3127                                         found = 1;
3128                                 }
3129                         }
3130                         if (!found) {
3131                                 sctp_free_hmaclist(hmaclist);
3132                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3133                                 error = EINVAL;
3134                                 break;
3135                         }
3136                         /* set it on the endpoint */
3137                         SCTP_INP_WLOCK(inp);
3138                         if (inp->sctp_ep.local_hmacs)
3139                                 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3140                         inp->sctp_ep.local_hmacs = hmaclist;
3141                         SCTP_INP_WUNLOCK(inp);
3142         sctp_set_hmac_done:
3143                         break;
3144                 }
3145         case SCTP_AUTH_ACTIVE_KEY:
3146                 {
3147                         struct sctp_authkeyid *scact;
3148
3149                         SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid,
3150                             optsize);
3151                         SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id);
3152
3153                         /* set the active key on the right place */
3154                         if (stcb) {
3155                                 /* set the active key on the assoc */
3156                                 if (sctp_auth_setactivekey(stcb,
3157                                     scact->scact_keynumber)) {
3158                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
3159                                             SCTP_FROM_SCTP_USRREQ,
3160                                             EINVAL);
3161                                         error = EINVAL;
3162                                 }
3163                                 SCTP_TCB_UNLOCK(stcb);
3164                         } else {
3165                                 /* set the active key on the endpoint */
3166                                 SCTP_INP_WLOCK(inp);
3167                                 if (sctp_auth_setactivekey_ep(inp,
3168                                     scact->scact_keynumber)) {
3169                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
3170                                             SCTP_FROM_SCTP_USRREQ,
3171                                             EINVAL);
3172                                         error = EINVAL;
3173                                 }
3174                                 SCTP_INP_WUNLOCK(inp);
3175                         }
3176                         break;
3177                 }
3178         case SCTP_AUTH_DELETE_KEY:
3179                 {
3180                         struct sctp_authkeyid *scdel;
3181
3182                         SCTP_CHECK_AND_CAST(scdel, optval, struct sctp_authkeyid,
3183                             optsize);
3184                         SCTP_FIND_STCB(inp, stcb, scdel->scact_assoc_id);
3185
3186                         /* delete the key from the right place */
3187                         if (stcb) {
3188                                 if (sctp_delete_sharedkey(stcb,
3189                                     scdel->scact_keynumber)) {
3190                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
3191                                             SCTP_FROM_SCTP_USRREQ,
3192                                             EINVAL);
3193                                         error = EINVAL;
3194                                 }
3195                                 SCTP_TCB_UNLOCK(stcb);
3196                         } else {
3197                                 SCTP_INP_WLOCK(inp);
3198                                 if (sctp_delete_sharedkey_ep(inp,
3199                                     scdel->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_DEACTIVATE_KEY:
3210                 {
3211                         struct sctp_authkeyid *keyid;
3212
3213                         SCTP_CHECK_AND_CAST(keyid, optval, struct sctp_authkeyid,
3214                             optsize);
3215                         SCTP_FIND_STCB(inp, stcb, keyid->scact_assoc_id);
3216
3217                         /* deactivate the key from the right place */
3218                         if (stcb) {
3219                                 if (sctp_deact_sharedkey(stcb,
3220                                     keyid->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_deact_sharedkey_ep(inp,
3230                                     keyid->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
3241         case SCTP_RESET_STREAMS:
3242                 {
3243                         struct sctp_stream_reset *strrst;
3244                         uint8_t send_in = 0, send_tsn = 0, send_out = 0,
3245                                 addstream = 0;
3246                         uint16_t addstrmcnt = 0;
3247                         int i;
3248
3249                         SCTP_CHECK_AND_CAST(strrst, optval, struct sctp_stream_reset, optsize);
3250                         SCTP_FIND_STCB(inp, stcb, strrst->strrst_assoc_id);
3251
3252                         if (stcb == NULL) {
3253                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
3254                                 error = ENOENT;
3255                                 break;
3256                         }
3257                         if (stcb->asoc.peer_supports_strreset == 0) {
3258                                 /*
3259                                  * Peer does not support it, we return
3260                                  * protocol not supported since this is true
3261                                  * for this feature and this peer, not the
3262                                  * socket request in general.
3263                                  */
3264                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EPROTONOSUPPORT);
3265                                 error = EPROTONOSUPPORT;
3266                                 SCTP_TCB_UNLOCK(stcb);
3267                                 break;
3268                         }
3269                         if (stcb->asoc.stream_reset_outstanding) {
3270                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
3271                                 error = EALREADY;
3272                                 SCTP_TCB_UNLOCK(stcb);
3273                                 break;
3274                         }
3275                         if (strrst->strrst_flags == SCTP_RESET_LOCAL_RECV) {
3276                                 send_in = 1;
3277                         } else if (strrst->strrst_flags == SCTP_RESET_LOCAL_SEND) {
3278                                 send_out = 1;
3279                         } else if (strrst->strrst_flags == SCTP_RESET_BOTH) {
3280                                 send_in = 1;
3281                                 send_out = 1;
3282                         } else if (strrst->strrst_flags == SCTP_RESET_TSN) {
3283                                 send_tsn = 1;
3284                         } else if (strrst->strrst_flags == SCTP_RESET_ADD_STREAMS) {
3285                                 if (send_tsn ||
3286                                     send_in ||
3287                                     send_out) {
3288                                         /* We can't do that and add streams */
3289                                         error = EINVAL;
3290                                         goto skip_stuff;
3291                                 }
3292                                 if (stcb->asoc.stream_reset_outstanding) {
3293                                         error = EBUSY;
3294                                         goto skip_stuff;
3295                                 }
3296                                 addstream = 1;
3297                                 /* We allocate here */
3298                                 addstrmcnt = strrst->strrst_num_streams;
3299                                 if ((int)(addstrmcnt + stcb->asoc.streamoutcnt) > 0xffff) {
3300                                         /* You can't have more than 64k */
3301                                         error = EINVAL;
3302                                         goto skip_stuff;
3303                                 }
3304                                 if ((stcb->asoc.strm_realoutsize - stcb->asoc.streamoutcnt) < addstrmcnt) {
3305                                         /* Need to allocate more */
3306                                         struct sctp_stream_out *oldstream;
3307                                         struct sctp_stream_queue_pending *sp,
3308                                                                  *nsp;
3309                                         int removed;
3310
3311                                         oldstream = stcb->asoc.strmout;
3312                                         /* get some more */
3313                                         SCTP_MALLOC(stcb->asoc.strmout, struct sctp_stream_out *,
3314                                             ((stcb->asoc.streamoutcnt + addstrmcnt) * sizeof(struct sctp_stream_out)),
3315                                             SCTP_M_STRMO);
3316                                         if (stcb->asoc.strmout == NULL) {
3317                                                 stcb->asoc.strmout = oldstream;
3318                                                 error = ENOMEM;
3319                                                 goto skip_stuff;
3320                                         }
3321                                         /*
3322                                          * Ok now we proceed with copying
3323                                          * the old out stuff and
3324                                          * initializing the new stuff.
3325                                          */
3326                                         SCTP_TCB_SEND_LOCK(stcb);
3327                                         for (i = 0; i < stcb->asoc.streamoutcnt; i++) {
3328                                                 TAILQ_INIT(&stcb->asoc.strmout[i].outqueue);
3329                                                 stcb->asoc.strmout[i].next_sequence_sent = oldstream[i].next_sequence_sent;
3330                                                 stcb->asoc.strmout[i].last_msg_incomplete = oldstream[i].last_msg_incomplete;
3331                                                 stcb->asoc.strmout[i].stream_no = i;
3332                                                 if (oldstream[i].next_spoke.tqe_next) {
3333                                                         sctp_remove_from_wheel(stcb, &stcb->asoc, &oldstream[i], 1);
3334                                                         stcb->asoc.strmout[i].next_spoke.tqe_next = NULL;
3335                                                         stcb->asoc.strmout[i].next_spoke.tqe_prev = NULL;
3336                                                         removed = 1;
3337                                                 } else {
3338                                                         /* not on out wheel */
3339                                                         stcb->asoc.strmout[i].next_spoke.tqe_next = NULL;
3340                                                         stcb->asoc.strmout[i].next_spoke.tqe_prev = NULL;
3341                                                         removed = 0;
3342                                                 }
3343                                                 /*
3344                                                  * now anything on those
3345                                                  * queues?
3346                                                  */
3347                                                 TAILQ_FOREACH_SAFE(sp, &oldstream[i].outqueue, next, nsp) {
3348                                                         TAILQ_REMOVE(&oldstream[i].outqueue, sp, next);
3349                                                         TAILQ_INSERT_TAIL(&stcb->asoc.strmout[i].outqueue, sp, next);
3350                                                 }
3351                                                 /* Did we disrupt the wheel? */
3352                                                 if (removed) {
3353                                                         sctp_insert_on_wheel(stcb,
3354                                                             &stcb->asoc,
3355                                                             &stcb->asoc.strmout[i],
3356                                                             1);
3357                                                 }
3358                                                 /*
3359                                                  * Now move assoc pointers
3360                                                  * too
3361                                                  */
3362                                                 if (stcb->asoc.last_out_stream == &oldstream[i]) {
3363                                                         stcb->asoc.last_out_stream = &stcb->asoc.strmout[i];
3364                                                 }
3365                                                 if (stcb->asoc.locked_on_sending == &oldstream[i]) {
3366                                                         stcb->asoc.locked_on_sending = &stcb->asoc.strmout[i];
3367                                                 }
3368                                         }
3369                                         /* now the new streams */
3370                                         for (i = stcb->asoc.streamoutcnt; i < (stcb->asoc.streamoutcnt + addstrmcnt); i++) {
3371                                                 stcb->asoc.strmout[i].next_sequence_sent = 0x0;
3372                                                 TAILQ_INIT(&stcb->asoc.strmout[i].outqueue);
3373                                                 stcb->asoc.strmout[i].stream_no = i;
3374                                                 stcb->asoc.strmout[i].last_msg_incomplete = 0;
3375                                                 stcb->asoc.strmout[i].next_spoke.tqe_next = NULL;
3376                                                 stcb->asoc.strmout[i].next_spoke.tqe_prev = NULL;
3377                                         }
3378                                         stcb->asoc.strm_realoutsize = stcb->asoc.streamoutcnt + addstrmcnt;
3379                                         SCTP_FREE(oldstream, SCTP_M_STRMO);
3380                                 }
3381                                 SCTP_TCB_SEND_UNLOCK(stcb);
3382                                 goto skip_stuff;
3383                         } else {
3384                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3385                                 error = EINVAL;
3386                                 SCTP_TCB_UNLOCK(stcb);
3387                                 break;
3388                         }
3389                         for (i = 0; i < strrst->strrst_num_streams; i++) {
3390                                 if ((send_in) &&
3391
3392                                     (strrst->strrst_list[i] > stcb->asoc.streamincnt)) {
3393                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3394                                         error = EINVAL;
3395                                         goto get_out;
3396                                 }
3397                                 if ((send_out) &&
3398                                     (strrst->strrst_list[i] > stcb->asoc.streamoutcnt)) {
3399                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3400                                         error = EINVAL;
3401                                         goto get_out;
3402                                 }
3403                         }
3404         skip_stuff:
3405                         if (error) {
3406                 get_out:
3407                                 SCTP_TCB_UNLOCK(stcb);
3408                                 break;
3409                         }
3410                         error = sctp_send_str_reset_req(stcb, strrst->strrst_num_streams,
3411                             strrst->strrst_list,
3412                             send_out, (stcb->asoc.str_reset_seq_in - 3),
3413                             send_in, send_tsn, addstream, addstrmcnt);
3414
3415                         sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_REQ, SCTP_SO_LOCKED);
3416                         SCTP_TCB_UNLOCK(stcb);
3417                 }
3418                 break;
3419
3420         case SCTP_CONNECT_X:
3421                 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) {
3422                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3423                         error = EINVAL;
3424                         break;
3425                 }
3426                 error = sctp_do_connect_x(so, inp, optval, optsize, p, 0);
3427                 break;
3428
3429         case SCTP_CONNECT_X_DELAYED:
3430                 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) {
3431                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3432                         error = EINVAL;
3433                         break;
3434                 }
3435                 error = sctp_do_connect_x(so, inp, optval, optsize, p, 1);
3436                 break;
3437
3438         case SCTP_CONNECT_X_COMPLETE:
3439                 {
3440                         struct sockaddr *sa;
3441                         struct sctp_nets *net;
3442
3443                         /* FIXME MT: check correct? */
3444                         SCTP_CHECK_AND_CAST(sa, optval, struct sockaddr, optsize);
3445
3446                         /* find tcb */
3447                         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
3448                                 SCTP_INP_RLOCK(inp);
3449                                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
3450                                 if (stcb) {
3451                                         SCTP_TCB_LOCK(stcb);
3452                                         net = sctp_findnet(stcb, sa);
3453                                 }
3454                                 SCTP_INP_RUNLOCK(inp);
3455                         } else {
3456                                 /*
3457                                  * We increment here since
3458                                  * sctp_findassociation_ep_addr() wil do a
3459                                  * decrement if it finds the stcb as long as
3460                                  * the locked tcb (last argument) is NOT a
3461                                  * TCB.. aka NULL.
3462                                  */
3463                                 SCTP_INP_INCR_REF(inp);
3464                                 stcb = sctp_findassociation_ep_addr(&inp, sa, &net, NULL, NULL);
3465                                 if (stcb == NULL) {
3466                                         SCTP_INP_DECR_REF(inp);
3467                                 }
3468                         }
3469
3470                         if (stcb == NULL) {
3471                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
3472                                 error = ENOENT;
3473                                 break;
3474                         }
3475                         if (stcb->asoc.delayed_connection == 1) {
3476                                 stcb->asoc.delayed_connection = 0;
3477                                 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
3478                                 sctp_timer_stop(SCTP_TIMER_TYPE_INIT, inp, stcb,
3479                                     stcb->asoc.primary_destination,
3480                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_9);
3481                                 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
3482                         } else {
3483                                 /*
3484                                  * already expired or did not use delayed
3485                                  * connectx
3486                                  */
3487                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
3488                                 error = EALREADY;
3489                         }
3490                         SCTP_TCB_UNLOCK(stcb);
3491                 }
3492                 break;
3493         case SCTP_MAX_BURST:
3494                 {
3495                         uint8_t *burst;
3496
3497                         SCTP_CHECK_AND_CAST(burst, optval, uint8_t, optsize);
3498
3499                         SCTP_INP_WLOCK(inp);
3500                         if (*burst) {
3501                                 inp->sctp_ep.max_burst = *burst;
3502                         }
3503                         SCTP_INP_WUNLOCK(inp);
3504                 }
3505                 break;
3506         case SCTP_MAXSEG:
3507                 {
3508                         struct sctp_assoc_value *av;
3509                         int ovh;
3510
3511                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
3512                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
3513
3514                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
3515                                 ovh = SCTP_MED_OVERHEAD;
3516                         } else {
3517                                 ovh = SCTP_MED_V4_OVERHEAD;
3518                         }
3519                         if (stcb) {
3520                                 if (av->assoc_value) {
3521                                         stcb->asoc.sctp_frag_point = (av->assoc_value + ovh);
3522                                 } else {
3523                                         stcb->asoc.sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
3524                                 }
3525                                 SCTP_TCB_UNLOCK(stcb);
3526                         } else {
3527                                 SCTP_INP_WLOCK(inp);
3528                                 /*
3529                                  * FIXME MT: I think this is not in tune
3530                                  * with the API ID
3531                                  */
3532                                 if (av->assoc_value) {
3533                                         inp->sctp_frag_point = (av->assoc_value + ovh);
3534                                 } else {
3535                                         inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
3536                                 }
3537                                 SCTP_INP_WUNLOCK(inp);
3538                         }
3539                 }
3540                 break;
3541         case SCTP_EVENTS:
3542                 {
3543                         struct sctp_event_subscribe *events;
3544
3545                         SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, optsize);
3546
3547                         SCTP_INP_WLOCK(inp);
3548                         if (events->sctp_data_io_event) {
3549                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
3550                         } else {
3551                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
3552                         }
3553
3554                         if (events->sctp_association_event) {
3555                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
3556                         } else {
3557                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
3558                         }
3559
3560                         if (events->sctp_address_event) {
3561                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
3562                         } else {
3563                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
3564                         }
3565
3566                         if (events->sctp_send_failure_event) {
3567                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
3568                         } else {
3569                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
3570                         }
3571
3572                         if (events->sctp_peer_error_event) {
3573                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR);
3574                         } else {
3575                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPEERERR);
3576                         }
3577
3578                         if (events->sctp_shutdown_event) {
3579                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
3580                         } else {
3581                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
3582                         }
3583
3584                         if (events->sctp_partial_delivery_event) {
3585                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
3586                         } else {
3587                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
3588                         }
3589
3590                         if (events->sctp_adaptation_layer_event) {
3591                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
3592                         } else {
3593                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
3594                         }
3595
3596                         if (events->sctp_authentication_event) {
3597                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT);
3598                         } else {
3599                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTHEVNT);
3600                         }
3601
3602                         if (events->sctp_sender_dry_event) {
3603                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_DRYEVNT);
3604                                 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3605                                     (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
3606                                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
3607                                         if (stcb) {
3608                                                 SCTP_TCB_LOCK(stcb);
3609                                         }
3610                                         if (stcb &&
3611                                             TAILQ_EMPTY(&stcb->asoc.send_queue) &&
3612                                             TAILQ_EMPTY(&stcb->asoc.sent_queue) &&
3613                                             (stcb->asoc.stream_queue_cnt == 0)) {
3614                                                 sctp_ulp_notify(SCTP_NOTIFY_SENDER_DRY, stcb, 0, NULL, SCTP_SO_LOCKED);
3615                                         }
3616                                         if (stcb) {
3617                                                 SCTP_TCB_UNLOCK(stcb);
3618                                         }
3619                                 }
3620                         } else {
3621                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_DRYEVNT);
3622                         }
3623
3624                         if (events->sctp_stream_reset_event) {
3625                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
3626                         } else {
3627                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
3628                         }
3629                         SCTP_INP_WUNLOCK(inp);
3630                 }
3631                 break;
3632
3633         case SCTP_ADAPTATION_LAYER:
3634                 {
3635                         struct sctp_setadaptation *adap_bits;
3636
3637                         SCTP_CHECK_AND_CAST(adap_bits, optval, struct sctp_setadaptation, optsize);
3638                         SCTP_INP_WLOCK(inp);
3639                         inp->sctp_ep.adaptation_layer_indicator = adap_bits->ssb_adaptation_ind;
3640                         SCTP_INP_WUNLOCK(inp);
3641                 }
3642                 break;
3643 #ifdef SCTP_DEBUG
3644         case SCTP_SET_INITIAL_DBG_SEQ:
3645                 {
3646                         uint32_t *vvv;
3647
3648                         SCTP_CHECK_AND_CAST(vvv, optval, uint32_t, optsize);
3649                         SCTP_INP_WLOCK(inp);
3650                         inp->sctp_ep.initial_sequence_debug = *vvv;
3651                         SCTP_INP_WUNLOCK(inp);
3652                 }
3653                 break;
3654 #endif
3655         case SCTP_DEFAULT_SEND_PARAM:
3656                 {
3657                         struct sctp_sndrcvinfo *s_info;
3658
3659                         SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, optsize);
3660                         SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id);
3661
3662                         if (stcb) {
3663                                 if (s_info->sinfo_stream <= stcb->asoc.streamoutcnt) {
3664                                         memcpy(&stcb->asoc.def_send, s_info, min(optsize, sizeof(stcb->asoc.def_send)));
3665                                 } else {
3666                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3667                                         error = EINVAL;
3668                                 }
3669                                 SCTP_TCB_UNLOCK(stcb);
3670                         } else {
3671                                 SCTP_INP_WLOCK(inp);
3672                                 memcpy(&inp->def_send, s_info, min(optsize, sizeof(inp->def_send)));
3673                                 SCTP_INP_WUNLOCK(inp);
3674                         }
3675                 }
3676                 break;
3677         case SCTP_PEER_ADDR_PARAMS:
3678                 /* Applys to the specific association */
3679                 {
3680                         struct sctp_paddrparams *paddrp;
3681                         struct sctp_nets *net;
3682
3683                         SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, optsize);
3684                         SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id);
3685                         net = NULL;
3686                         if (stcb) {
3687                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address);
3688                         } else {
3689                                 /*
3690                                  * We increment here since
3691                                  * sctp_findassociation_ep_addr() wil do a
3692                                  * decrement if it finds the stcb as long as
3693                                  * the locked tcb (last argument) is NOT a
3694                                  * TCB.. aka NULL.
3695                                  */
3696                                 SCTP_INP_INCR_REF(inp);
3697                                 stcb = sctp_findassociation_ep_addr(&inp,
3698                                     (struct sockaddr *)&paddrp->spp_address,
3699                                     &net, NULL, NULL);
3700                                 if (stcb == NULL) {
3701                                         SCTP_INP_DECR_REF(inp);
3702                                 }
3703                         }
3704                         if (stcb && (net == NULL)) {
3705                                 struct sockaddr *sa;
3706
3707                                 sa = (struct sockaddr *)&paddrp->spp_address;
3708                                 if (sa->sa_family == AF_INET) {
3709                                         struct sockaddr_in *sin;
3710
3711                                         sin = (struct sockaddr_in *)sa;
3712                                         if (sin->sin_addr.s_addr) {
3713                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3714                                                 SCTP_TCB_UNLOCK(stcb);
3715                                                 error = EINVAL;
3716                                                 break;
3717                                         }
3718                                 } else if (sa->sa_family == AF_INET6) {
3719                                         struct sockaddr_in6 *sin6;
3720
3721                                         sin6 = (struct sockaddr_in6 *)sa;
3722                                         if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3723                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3724                                                 SCTP_TCB_UNLOCK(stcb);
3725                                                 error = EINVAL;
3726                                                 break;
3727                                         }
3728                                 } else {
3729                                         error = EAFNOSUPPORT;
3730                                         SCTP_TCB_UNLOCK(stcb);
3731                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
3732                                         break;
3733                                 }
3734                         }
3735                         /* sanity checks */
3736                         if ((paddrp->spp_flags & SPP_HB_ENABLE) && (paddrp->spp_flags & SPP_HB_DISABLE)) {
3737                                 if (stcb)
3738                                         SCTP_TCB_UNLOCK(stcb);
3739                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3740                                 return (EINVAL);
3741                         }
3742                         if ((paddrp->spp_flags & SPP_PMTUD_ENABLE) && (paddrp->spp_flags & SPP_PMTUD_DISABLE)) {
3743                                 if (stcb)
3744                                         SCTP_TCB_UNLOCK(stcb);
3745                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3746                                 return (EINVAL);
3747                         }
3748                         if (stcb) {
3749                                 /************************TCB SPECIFIC SET ******************/
3750                                 /*
3751                                  * do we change the timer for HB, we run
3752                                  * only one?
3753                                  */
3754                                 int ovh = 0;
3755
3756                                 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
3757                                         ovh = SCTP_MED_OVERHEAD;
3758                                 } else {
3759                                         ovh = SCTP_MED_V4_OVERHEAD;
3760                                 }
3761
3762                                 if (paddrp->spp_hbinterval)
3763                                         stcb->asoc.heart_beat_delay = paddrp->spp_hbinterval;
3764                                 else if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO)
3765                                         stcb->asoc.heart_beat_delay = 0;
3766
3767                                 /* network sets ? */
3768                                 if (net) {
3769                                         /************************NET SPECIFIC SET ******************/
3770                                         if (paddrp->spp_flags & SPP_HB_DEMAND) {
3771                                                 /* on demand HB */
3772                                                 if (sctp_send_hb(stcb, 1, net) < 0) {
3773                                                         /* asoc destroyed */
3774                                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3775                                                         error = EINVAL;
3776                                                         break;
3777                                                 }
3778                                         }
3779                                         if (paddrp->spp_flags & SPP_HB_DISABLE) {
3780                                                 net->dest_state |= SCTP_ADDR_NOHB;
3781                                         }
3782                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3783                                                 net->dest_state &= ~SCTP_ADDR_NOHB;
3784                                         }
3785                                         if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && (paddrp->spp_pathmtu >= SCTP_SMALLEST_PMTU)) {
3786                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3787                                                         sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
3788                                                             SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10);
3789                                                 }
3790                                                 if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) {
3791                                                         net->mtu = paddrp->spp_pathmtu + ovh;
3792                                                         if (net->mtu < stcb->asoc.smallest_mtu) {
3793                                                                 sctp_pathmtu_adjustment(inp, stcb, net, net->mtu);
3794                                                         }
3795                                                 }
3796                                         }
3797                                         if (paddrp->spp_flags & SPP_PMTUD_ENABLE) {
3798                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3799                                                         sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
3800                                                 }
3801                                         }
3802                                         if (paddrp->spp_pathmaxrxt)
3803                                                 net->failure_threshold = paddrp->spp_pathmaxrxt;
3804 #ifdef INET
3805                                         if (paddrp->spp_flags & SPP_IPV4_TOS) {
3806                                                 if (net->ro._l_addr.sin.sin_family == AF_INET) {
3807                                                         net->tos_flowlabel = paddrp->spp_ipv4_tos & 0x000000fc;
3808                                                 }
3809                                         }
3810 #endif
3811 #ifdef INET6
3812                                         if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL) {
3813                                                 if (net->ro._l_addr.sin6.sin6_family == AF_INET6) {
3814                                                         net->tos_flowlabel = paddrp->spp_ipv6_flowlabel;
3815                                                 }
3816                                         }
3817 #endif
3818                                 } else {
3819                                         /************************ASSOC ONLY -- NO NET SPECIFIC SET ******************/
3820                                         if (paddrp->spp_pathmaxrxt)
3821                                                 stcb->asoc.def_net_failure = paddrp->spp_pathmaxrxt;
3822
3823                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3824                                                 /* Turn back on the timer */
3825                                                 stcb->asoc.hb_is_disabled = 0;
3826                                                 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
3827                                         }
3828                                         if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && (paddrp->spp_pathmtu >= SCTP_SMALLEST_PMTU)) {
3829                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3830                                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3831                                                                 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
3832                                                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10);
3833                                                         }
3834                                                         if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) {
3835                                                                 net->mtu = paddrp->spp_pathmtu + ovh;
3836                                                                 if (net->mtu < stcb->asoc.smallest_mtu) {
3837                                                                         sctp_pathmtu_adjustment(inp, stcb, net, net->mtu);
3838                                                                 }
3839                                                         }
3840                                                 }
3841                                         }
3842                                         if (paddrp->spp_flags & SPP_PMTUD_ENABLE) {
3843                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3844                                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3845                                                                 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
3846                                                         }
3847                                                 }
3848                                         }
3849                                         if (paddrp->spp_flags & SPP_HB_DISABLE) {
3850                                                 int cnt_of_unconf = 0;
3851                                                 struct sctp_nets *lnet;
3852
3853                                                 stcb->asoc.hb_is_disabled = 1;
3854                                                 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
3855                                                         if (lnet->dest_state & SCTP_ADDR_UNCONFIRMED) {
3856                                                                 cnt_of_unconf++;
3857                                                         }
3858                                                 }
3859                                                 /*
3860                                                  * stop the timer ONLY if we
3861                                                  * have no unconfirmed
3862                                                  * addresses
3863                                                  */
3864                                                 if (cnt_of_unconf == 0) {
3865                                                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3866                                                                 sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net,
3867                                                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_11);
3868                                                         }
3869                                                 }
3870                                         }
3871                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3872                                                 /* start up the timer. */
3873                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3874                                                         sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
3875                                                 }
3876                                         }
3877 #ifdef INET
3878                                         if (paddrp->spp_flags & SPP_IPV4_TOS)
3879                                                 stcb->asoc.default_tos = paddrp->spp_ipv4_tos & 0x000000fc;
3880 #endif
3881 #ifdef INET6
3882                                         if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL)
3883                                                 stcb->asoc.default_flowlabel = paddrp->spp_ipv6_flowlabel;
3884 #endif
3885
3886                                 }
3887                                 SCTP_TCB_UNLOCK(stcb);
3888                         } else {
3889                                 /************************NO TCB, SET TO default stuff ******************/
3890                                 SCTP_INP_WLOCK(inp);
3891                                 /*
3892                                  * For the TOS/FLOWLABEL stuff you set it
3893                                  * with the options on the socket
3894                                  */
3895                                 if (paddrp->spp_pathmaxrxt) {
3896                                         inp->sctp_ep.def_net_failure = paddrp->spp_pathmaxrxt;
3897                                 }
3898                                 if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO)
3899                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = 0;
3900                                 else if (paddrp->spp_hbinterval) {
3901                                         if (paddrp->spp_hbinterval > SCTP_MAX_HB_INTERVAL)
3902                                                 paddrp->spp_hbinterval = SCTP_MAX_HB_INTERVAL;
3903                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(paddrp->spp_hbinterval);
3904                                 }
3905                                 if (paddrp->spp_flags & SPP_HB_ENABLE) {
3906                                         sctp_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
3907
3908                                 } else if (paddrp->spp_flags & SPP_HB_DISABLE) {
3909                                         sctp_feature_on(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
3910                                 }
3911                                 SCTP_INP_WUNLOCK(inp);
3912                         }
3913                 }
3914                 break;
3915         case SCTP_RTOINFO:
3916                 {
3917                         struct sctp_rtoinfo *srto;
3918                         uint32_t new_init, new_min, new_max;
3919
3920                         SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, optsize);
3921                         SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id);
3922
3923                         if (stcb) {
3924                                 if (srto->srto_initial)
3925                                         new_init = srto->srto_initial;
3926                                 else
3927                                         new_init = stcb->asoc.initial_rto;
3928                                 if (srto->srto_max)
3929                                         new_max = srto->srto_max;
3930                                 else
3931                                         new_max = stcb->asoc.maxrto;
3932                                 if (srto->srto_min)
3933                                         new_min = srto->srto_min;
3934                                 else
3935                                         new_min = stcb->asoc.minrto;
3936                                 if ((new_min <= new_init) && (new_init <= new_max)) {
3937                                         stcb->asoc.initial_rto = new_init;
3938                                         stcb->asoc.maxrto = new_max;
3939                                         stcb->asoc.minrto = new_min;
3940                                 } else {
3941                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3942                                         error = EINVAL;
3943                                 }
3944                                 SCTP_TCB_UNLOCK(stcb);
3945                         } else {
3946                                 SCTP_INP_WLOCK(inp);
3947                                 if (srto->srto_initial)
3948                                         new_init = srto->srto_initial;
3949                                 else
3950                                         new_init = inp->sctp_ep.initial_rto;
3951                                 if (srto->srto_max)
3952                                         new_max = srto->srto_max;
3953                                 else
3954                                         new_max = inp->sctp_ep.sctp_maxrto;
3955                                 if (srto->srto_min)
3956                                         new_min = srto->srto_min;
3957                                 else
3958                                         new_min = inp->sctp_ep.sctp_minrto;
3959                                 if ((new_min <= new_init) && (new_init <= new_max)) {
3960                                         inp->sctp_ep.initial_rto = new_init;
3961                                         inp->sctp_ep.sctp_maxrto = new_max;
3962                                         inp->sctp_ep.sctp_minrto = new_min;
3963                                 } else {
3964                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3965                                         error = EINVAL;
3966                                 }
3967                                 SCTP_INP_WUNLOCK(inp);
3968                         }
3969                 }
3970                 break;
3971         case SCTP_ASSOCINFO:
3972                 {
3973                         struct sctp_assocparams *sasoc;
3974
3975                         SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, optsize);
3976                         SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id);
3977                         if (sasoc->sasoc_cookie_life) {
3978                                 /* boundary check the cookie life */
3979                                 if (sasoc->sasoc_cookie_life < 1000)
3980                                         sasoc->sasoc_cookie_life = 1000;
3981                                 if (sasoc->sasoc_cookie_life > SCTP_MAX_COOKIE_LIFE) {
3982                                         sasoc->sasoc_cookie_life = SCTP_MAX_COOKIE_LIFE;
3983                                 }
3984                         }
3985                         if (stcb) {
3986                                 if (sasoc->sasoc_asocmaxrxt)
3987                                         stcb->asoc.max_send_times = sasoc->sasoc_asocmaxrxt;
3988                                 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets;
3989                                 sasoc->sasoc_peer_rwnd = 0;
3990                                 sasoc->sasoc_local_rwnd = 0;
3991                                 if (sasoc->sasoc_cookie_life) {
3992                                         stcb->asoc.cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life);
3993                                 }
3994                                 SCTP_TCB_UNLOCK(stcb);
3995                         } else {
3996                                 SCTP_INP_WLOCK(inp);
3997                                 if (sasoc->sasoc_asocmaxrxt)
3998                                         inp->sctp_ep.max_send_times = sasoc->sasoc_asocmaxrxt;
3999                                 sasoc->sasoc_number_peer_destinations = 0;
4000                                 sasoc->sasoc_peer_rwnd = 0;
4001                                 sasoc->sasoc_local_rwnd = 0;
4002                                 if (sasoc->sasoc_cookie_life) {
4003                                         inp->sctp_ep.def_cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life);
4004                                 }
4005                                 SCTP_INP_WUNLOCK(inp);
4006                         }
4007                 }
4008                 break;
4009         case SCTP_INITMSG:
4010                 {
4011                         struct sctp_initmsg *sinit;
4012
4013                         SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, optsize);
4014                         SCTP_INP_WLOCK(inp);
4015                         if (sinit->sinit_num_ostreams)
4016                                 inp->sctp_ep.pre_open_stream_count = sinit->sinit_num_ostreams;
4017
4018                         if (sinit->sinit_max_instreams)
4019                                 inp->sctp_ep.max_open_streams_intome = sinit->sinit_max_instreams;
4020
4021                         if (sinit->sinit_max_attempts)
4022                                 inp->sctp_ep.max_init_times = sinit->sinit_max_attempts;
4023
4024                         if (sinit->sinit_max_init_timeo)
4025                                 inp->sctp_ep.initial_init_rto_max = sinit->sinit_max_init_timeo;
4026                         SCTP_INP_WUNLOCK(inp);
4027                 }
4028                 break;
4029         case SCTP_PRIMARY_ADDR:
4030                 {
4031                         struct sctp_setprim *spa;
4032                         struct sctp_nets *net, *lnet;
4033
4034                         SCTP_CHECK_AND_CAST(spa, optval, struct sctp_setprim, optsize);
4035                         SCTP_FIND_STCB(inp, stcb, spa->ssp_assoc_id);
4036
4037                         net = NULL;
4038                         if (stcb) {
4039                                 net = sctp_findnet(stcb, (struct sockaddr *)&spa->ssp_addr);
4040                         } else {
4041                                 /*
4042                                  * We increment here since
4043                                  * sctp_findassociation_ep_addr() wil do a
4044                                  * decrement if it finds the stcb as long as
4045                                  * the locked tcb (last argument) is NOT a
4046                                  * TCB.. aka NULL.
4047                                  */
4048                                 SCTP_INP_INCR_REF(inp);
4049                                 stcb = sctp_findassociation_ep_addr(&inp,
4050                                     (struct sockaddr *)&spa->ssp_addr,
4051                                     &net, NULL, NULL);
4052                                 if (stcb == NULL) {
4053                                         SCTP_INP_DECR_REF(inp);
4054                                 }
4055                         }
4056
4057                         if ((stcb) && (net)) {
4058                                 if ((net != stcb->asoc.primary_destination) &&
4059                                     (!(net->dest_state & SCTP_ADDR_UNCONFIRMED))) {
4060                                         /* Ok we need to set it */
4061                                         lnet = stcb->asoc.primary_destination;
4062                                         if (sctp_set_primary_addr(stcb, (struct sockaddr *)NULL, net) == 0) {
4063                                                 if (net->dest_state & SCTP_ADDR_SWITCH_PRIMARY) {
4064                                                         net->dest_state |= SCTP_ADDR_DOUBLE_SWITCH;
4065                                                 }
4066                                                 net->dest_state |= SCTP_ADDR_SWITCH_PRIMARY;
4067                                         }
4068                                 }
4069                         } else {
4070                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4071                                 error = EINVAL;
4072                         }
4073                         if (stcb) {
4074                                 SCTP_TCB_UNLOCK(stcb);
4075                         }
4076                 }
4077                 break;
4078         case SCTP_SET_DYNAMIC_PRIMARY:
4079                 {
4080                         union sctp_sockstore *ss;
4081
4082                         error = priv_check(curthread,
4083                             PRIV_NETINET_RESERVEDPORT);
4084                         if (error)
4085                                 break;
4086
4087                         SCTP_CHECK_AND_CAST(ss, optval, union sctp_sockstore, optsize);
4088                         /* SUPER USER CHECK? */
4089                         error = sctp_dynamic_set_primary(&ss->sa, vrf_id);
4090                 }
4091                 break;
4092         case SCTP_SET_PEER_PRIMARY_ADDR:
4093                 {
4094                         struct sctp_setpeerprim *sspp;
4095
4096                         SCTP_CHECK_AND_CAST(sspp, optval, struct sctp_setpeerprim, optsize);
4097                         SCTP_FIND_STCB(inp, stcb, sspp->sspp_assoc_id);
4098                         if (stcb != NULL) {
4099                                 struct sctp_ifa *ifa;
4100
4101                                 ifa = sctp_find_ifa_by_addr((struct sockaddr *)&sspp->sspp_addr,
4102                                     stcb->asoc.vrf_id, SCTP_ADDR_NOT_LOCKED);
4103                                 if (ifa == NULL) {
4104                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4105                                         error = EINVAL;
4106                                         goto out_of_it;
4107                                 }
4108                                 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
4109                                         /*
4110                                          * Must validate the ifa found is in
4111                                          * our ep
4112                                          */
4113                                         struct sctp_laddr *laddr;
4114                                         int found = 0;
4115
4116                                         LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4117                                                 if (laddr->ifa == NULL) {
4118                                                         SCTPDBG(SCTP_DEBUG_OUTPUT1, "%s: NULL ifa\n",
4119                                                             __FUNCTION__);
4120                                                         continue;
4121                                                 }
4122                                                 if (laddr->ifa == ifa) {
4123                                                         found = 1;
4124                                                         break;
4125                                                 }
4126                                         }
4127                                         if (!found) {
4128                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4129                                                 error = EINVAL;
4130                                                 goto out_of_it;
4131                                         }
4132                                 }
4133                                 if (sctp_set_primary_ip_address_sa(stcb,
4134                                     (struct sockaddr *)&sspp->sspp_addr) != 0) {
4135                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4136                                         error = EINVAL;
4137                                 }
4138                 out_of_it:
4139                                 SCTP_TCB_UNLOCK(stcb);
4140                         } else {
4141                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4142                                 error = EINVAL;
4143                         }
4144
4145                 }
4146                 break;
4147         case SCTP_BINDX_ADD_ADDR:
4148                 {
4149                         struct sctp_getaddresses *addrs;
4150                         size_t sz;
4151                         struct thread *td;
4152
4153                         td = (struct thread *)p;
4154                         SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses,
4155                             optsize);
4156                         if (addrs->addr->sa_family == AF_INET) {
4157                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in);
4158                                 if (optsize < sz) {
4159                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4160                                         error = EINVAL;
4161                                         break;
4162                                 }
4163                                 if (td != NULL && (error = prison_local_ip4(td->td_ucred, &(((struct sockaddr_in *)(addrs->addr))->sin_addr)))) {
4164                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, error);
4165                                         break;
4166                                 }
4167 #ifdef INET6
4168                         } else if (addrs->addr->sa_family == AF_INET6) {
4169                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in6);
4170                                 if (optsize < sz) {
4171                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4172                                         error = EINVAL;
4173                                         break;
4174                                 }
4175                                 if (td != NULL && (error = prison_local_ip6(td->td_ucred, &(((struct sockaddr_in6 *)(addrs->addr))->sin6_addr),
4176                                     (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
4177                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, error);
4178                                         break;
4179                                 }
4180 #endif
4181                         } else {
4182                                 error = EAFNOSUPPORT;
4183                                 break;
4184                         }
4185                         sctp_bindx_add_address(so, inp, addrs->addr,
4186                             addrs->sget_assoc_id, vrf_id,
4187                             &error, p);
4188                 }
4189                 break;
4190         case SCTP_BINDX_REM_ADDR:
4191                 {
4192                         struct sctp_getaddresses *addrs;
4193                         size_t sz;
4194                         struct thread *td;
4195
4196                         td = (struct thread *)p;
4197
4198                         SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses, optsize);
4199                         if (addrs->addr->sa_family == AF_INET) {
4200                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in);
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_ip4(td->td_ucred, &(((struct sockaddr_in *)(addrs->addr))->sin_addr)))) {
4207                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, error);
4208                                         break;
4209                                 }
4210 #ifdef INET6
4211                         } else if (addrs->addr->sa_family == AF_INET6) {
4212                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in6);
4213                                 if (optsize < sz) {
4214                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4215                                         error = EINVAL;
4216                                         break;
4217                                 }
4218                                 if (td != NULL && (error = prison_local_ip6(td->td_ucred, &(((struct sockaddr_in6 *)(addrs->addr))->sin6_addr),
4219                                     (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
4220                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, error);
4221                                         break;
4222                                 }
4223 #endif
4224                         } else {
4225                                 error = EAFNOSUPPORT;
4226                                 break;
4227                         }
4228                         sctp_bindx_delete_address(so, inp, addrs->addr,
4229                             addrs->sget_assoc_id, vrf_id,
4230                             &error);
4231                 }
4232                 break;
4233         default:
4234                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
4235                 error = ENOPROTOOPT;
4236                 break;
4237         }                       /* end switch (opt) */
4238         return (error);
4239 }
4240
4241 int
4242 sctp_ctloutput(struct socket *so, struct sockopt *sopt)
4243 {
4244         void *optval = NULL;
4245         size_t optsize = 0;
4246         struct sctp_inpcb *inp;
4247         void *p;
4248         int error = 0;
4249
4250         inp = (struct sctp_inpcb *)so->so_pcb;
4251         if (inp == 0) {
4252                 /* I made the same as TCP since we are not setup? */
4253                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4254                 return (ECONNRESET);
4255         }
4256         if (sopt->sopt_level != IPPROTO_SCTP) {
4257                 /* wrong proto level... send back up to IP */
4258 #ifdef INET6
4259                 if (INP_CHECK_SOCKAF(so, AF_INET6))
4260                         error = ip6_ctloutput(so, sopt);
4261                 else
4262 #endif                          /* INET6 */
4263                         error = ip_ctloutput(so, sopt);
4264                 return (error);
4265         }
4266         optsize = sopt->sopt_valsize;
4267         if (optsize) {
4268                 SCTP_MALLOC(optval, void *, optsize, SCTP_M_SOCKOPT);
4269                 if (optval == NULL) {
4270                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOBUFS);
4271                         return (ENOBUFS);
4272                 }
4273                 error = sooptcopyin(sopt, optval, optsize, optsize);
4274                 if (error) {
4275                         SCTP_FREE(optval, SCTP_M_SOCKOPT);
4276                         goto out;
4277                 }
4278         }
4279         p = (void *)sopt->sopt_td;
4280         if (sopt->sopt_dir == SOPT_SET) {
4281                 error = sctp_setopt(so, sopt->sopt_name, optval, optsize, p);
4282         } else if (sopt->sopt_dir == SOPT_GET) {
4283                 error = sctp_getopt(so, sopt->sopt_name, optval, &optsize, p);
4284         } else {
4285                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4286                 error = EINVAL;
4287         }
4288         if ((error == 0) && (optval != NULL)) {
4289                 error = sooptcopyout(sopt, optval, optsize);
4290                 SCTP_FREE(optval, SCTP_M_SOCKOPT);
4291         } else if (optval != NULL) {
4292                 SCTP_FREE(optval, SCTP_M_SOCKOPT);
4293         }
4294 out:
4295         return (error);
4296 }
4297
4298
4299 static int
4300 sctp_connect(struct socket *so, struct sockaddr *addr, struct thread *p)
4301 {
4302         int error = 0;
4303         int create_lock_on = 0;
4304         uint32_t vrf_id;
4305         struct sctp_inpcb *inp;
4306         struct sctp_tcb *stcb = NULL;
4307
4308         inp = (struct sctp_inpcb *)so->so_pcb;
4309         if (inp == 0) {
4310                 /* I made the same as TCP since we are not setup? */
4311                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4312                 return (ECONNRESET);
4313         }
4314         if (addr == NULL) {
4315                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4316                 return EINVAL;
4317         }
4318 #ifdef INET6
4319         if (addr->sa_family == AF_INET6) {
4320                 struct sockaddr_in6 *sin6p;
4321
4322                 if (addr->sa_len != sizeof(struct sockaddr_in6)) {
4323                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4324                         return (EINVAL);
4325                 }
4326                 sin6p = (struct sockaddr_in6 *)addr;
4327                 if (p != NULL && (error = prison_remote_ip6(p->td_ucred, &sin6p->sin6_addr)) != 0) {
4328                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
4329                         return (error);
4330                 }
4331         } else
4332 #endif
4333         if (addr->sa_family == AF_INET) {
4334                 struct sockaddr_in *sinp;
4335
4336                 if (addr->sa_len != sizeof(struct sockaddr_in)) {
4337                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4338                         return (EINVAL);
4339                 }
4340                 sinp = (struct sockaddr_in *)addr;
4341                 if (p != NULL && (error = prison_remote_ip4(p->td_ucred, &sinp->sin_addr)) != 0) {
4342                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
4343                         return (error);
4344                 }
4345         } else {
4346                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EAFNOSUPPORT);
4347                 return (EAFNOSUPPORT);
4348         }
4349         SCTP_INP_INCR_REF(inp);
4350         SCTP_ASOC_CREATE_LOCK(inp);
4351         create_lock_on = 1;
4352
4353
4354         if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4355             (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4356                 /* Should I really unlock ? */
4357                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EFAULT);
4358                 error = EFAULT;
4359                 goto out_now;
4360         }
4361 #ifdef INET6
4362         if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) &&
4363             (addr->sa_family == AF_INET6)) {
4364                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4365                 error = EINVAL;
4366                 goto out_now;
4367         }
4368 #endif                          /* INET6 */
4369         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
4370             SCTP_PCB_FLAGS_UNBOUND) {
4371                 /* Bind a ephemeral port */
4372                 error = sctp_inpcb_bind(so, NULL, NULL, p);
4373                 if (error) {
4374                         goto out_now;
4375                 }
4376         }
4377         /* Now do we connect? */
4378         if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
4379             (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE))) {
4380                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4381                 error = EINVAL;
4382                 goto out_now;
4383         }
4384         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
4385             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
4386                 /* We are already connected AND the TCP model */
4387                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
4388                 error = EADDRINUSE;
4389                 goto out_now;
4390         }
4391         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4392                 SCTP_INP_RLOCK(inp);
4393                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
4394                 SCTP_INP_RUNLOCK(inp);
4395         } else {
4396                 /*
4397                  * We increment here since sctp_findassociation_ep_addr()
4398                  * will do a decrement if it finds the stcb as long as the
4399                  * locked tcb (last argument) is NOT a TCB.. aka NULL.
4400                  */
4401                 SCTP_INP_INCR_REF(inp);
4402                 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL);
4403                 if (stcb == NULL) {
4404                         SCTP_INP_DECR_REF(inp);
4405                 } else {
4406                         SCTP_TCB_UNLOCK(stcb);
4407                 }
4408         }
4409         if (stcb != NULL) {
4410                 /* Already have or am bring up an association */
4411                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
4412                 error = EALREADY;
4413                 goto out_now;
4414         }
4415         vrf_id = inp->def_vrf_id;
4416         /* We are GOOD to go */
4417         stcb = sctp_aloc_assoc(inp, addr, &error, 0, vrf_id, p);
4418         if (stcb == NULL) {
4419                 /* Gak! no memory */
4420                 goto out_now;
4421         }
4422         if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
4423                 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
4424                 /* Set the connected flag so we can queue data */
4425                 SOCKBUF_LOCK(&so->so_rcv);
4426                 so->so_rcv.sb_state &= ~SBS_CANTRCVMORE;
4427                 SOCKBUF_UNLOCK(&so->so_rcv);
4428                 SOCKBUF_LOCK(&so->so_snd);
4429                 so->so_snd.sb_state &= ~SBS_CANTSENDMORE;
4430                 SOCKBUF_UNLOCK(&so->so_snd);
4431                 SOCK_LOCK(so);
4432                 so->so_state &= ~SS_ISDISCONNECTING;
4433                 SOCK_UNLOCK(so);
4434                 soisconnecting(so);
4435         }
4436         SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_COOKIE_WAIT);
4437         (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
4438
4439         /* initialize authentication parameters for the assoc */
4440         sctp_initialize_auth_params(inp, stcb);
4441
4442         sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
4443         SCTP_TCB_UNLOCK(stcb);
4444 out_now:
4445         if (create_lock_on) {
4446                 SCTP_ASOC_CREATE_UNLOCK(inp);
4447         }
4448         SCTP_INP_DECR_REF(inp);
4449         return error;
4450 }
4451
4452 int
4453 sctp_listen(struct socket *so, int backlog, struct thread *p)
4454 {
4455         /*
4456          * Note this module depends on the protocol processing being called
4457          * AFTER any socket level flags and backlog are applied to the
4458          * socket. The traditional way that the socket flags are applied is
4459          * AFTER protocol processing. We have made a change to the
4460          * sys/kern/uipc_socket.c module to reverse this but this MUST be in
4461          * place if the socket API for SCTP is to work properly.
4462          */
4463
4464         int error = 0;
4465         struct sctp_inpcb *inp;
4466
4467         inp = (struct sctp_inpcb *)so->so_pcb;
4468         if (inp == 0) {
4469                 /* I made the same as TCP since we are not setup? */
4470                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4471                 return (ECONNRESET);
4472         }
4473         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
4474                 /* See if we have a listener */
4475                 struct sctp_inpcb *tinp;
4476                 union sctp_sockstore store, *sp;
4477
4478                 sp = &store;
4479                 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
4480                         /* not bound all */
4481                         struct sctp_laddr *laddr;
4482
4483                         LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4484                                 memcpy(&store, &laddr->ifa->address, sizeof(store));
4485                                 sp->sin.sin_port = inp->sctp_lport;
4486                                 tinp = sctp_pcb_findep(&sp->sa, 0, 0, inp->def_vrf_id);
4487                                 if (tinp && (tinp != inp) &&
4488                                     ((tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) == 0) &&
4489                                     ((tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
4490                                     (tinp->sctp_socket->so_qlimit)) {
4491                                         /*
4492                                          * we have a listener already and
4493                                          * its not this inp.
4494                                          */
4495                                         SCTP_INP_DECR_REF(tinp);
4496                                         return (EADDRINUSE);
4497                                 } else if (tinp) {
4498                                         SCTP_INP_DECR_REF(tinp);
4499                                 }
4500                         }
4501                 } else {
4502                         /* Setup a local addr bound all */
4503                         memset(&store, 0, sizeof(store));
4504                         store.sin.sin_port = inp->sctp_lport;
4505 #ifdef INET6
4506                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
4507                                 store.sa.sa_family = AF_INET6;
4508                                 store.sa.sa_len = sizeof(struct sockaddr_in6);
4509                         }
4510 #endif
4511                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
4512                                 store.sa.sa_family = AF_INET;
4513                                 store.sa.sa_len = sizeof(struct sockaddr_in);
4514                         }
4515                         tinp = sctp_pcb_findep(&sp->sa, 0, 0, inp->def_vrf_id);
4516                         if (tinp && (tinp != inp) &&
4517                             ((tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) == 0) &&
4518                             ((tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
4519                             (tinp->sctp_socket->so_qlimit)) {
4520                                 /*
4521                                  * we have a listener already and its not
4522                                  * this inp.
4523                                  */
4524                                 SCTP_INP_DECR_REF(tinp);
4525                                 return (EADDRINUSE);
4526                         } else if (tinp) {
4527                                 SCTP_INP_DECR_REF(inp);
4528                         }
4529                 }
4530         }
4531         SCTP_INP_RLOCK(inp);
4532 #ifdef SCTP_LOCK_LOGGING
4533         if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOCK_LOGGING_ENABLE) {
4534                 sctp_log_lock(inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_SOCK);
4535         }
4536 #endif
4537         SOCK_LOCK(so);
4538         error = solisten_proto_check(so);
4539         if (error) {
4540                 SOCK_UNLOCK(so);
4541                 SCTP_INP_RUNLOCK(inp);
4542                 return (error);
4543         }
4544         if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
4545             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
4546                 /*
4547                  * The unlucky case - We are in the tcp pool with this guy.
4548                  * - Someone else is in the main inp slot. - We must move
4549                  * this guy (the listener) to the main slot - We must then
4550                  * move the guy that was listener to the TCP Pool.
4551                  */
4552                 if (sctp_swap_inpcb_for_listen(inp)) {
4553                         goto in_use;
4554                 }
4555         }
4556         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
4557             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
4558                 /* We are already connected AND the TCP model */
4559 in_use:
4560                 SCTP_INP_RUNLOCK(inp);
4561                 SOCK_UNLOCK(so);
4562                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
4563                 return (EADDRINUSE);
4564         }
4565         SCTP_INP_RUNLOCK(inp);
4566         if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4567                 /* We must do a bind. */
4568                 SOCK_UNLOCK(so);
4569                 if ((error = sctp_inpcb_bind(so, NULL, NULL, p))) {
4570                         /* bind error, probably perm */
4571                         return (error);
4572                 }
4573                 SOCK_LOCK(so);
4574         }
4575         /* It appears for 7.0 and on, we must always call this. */
4576         solisten_proto(so, backlog);
4577         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
4578                 /* remove the ACCEPTCONN flag for one-to-many sockets */
4579                 so->so_options &= ~SO_ACCEPTCONN;
4580         }
4581         if (backlog == 0) {
4582                 /* turning off listen */
4583                 so->so_options &= ~SO_ACCEPTCONN;
4584         }
4585         SOCK_UNLOCK(so);
4586         return (error);
4587 }
4588
4589 static int sctp_defered_wakeup_cnt = 0;
4590
4591 int
4592 sctp_accept(struct socket *so, struct sockaddr **addr)
4593 {
4594         struct sctp_tcb *stcb;
4595         struct sctp_inpcb *inp;
4596         union sctp_sockstore store;
4597
4598 #ifdef INET6
4599         int error;
4600
4601 #endif
4602         inp = (struct sctp_inpcb *)so->so_pcb;
4603
4604         if (inp == 0) {
4605                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4606                 return (ECONNRESET);
4607         }
4608         SCTP_INP_RLOCK(inp);
4609         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
4610                 SCTP_INP_RUNLOCK(inp);
4611                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
4612                 return (EOPNOTSUPP);
4613         }
4614         if (so->so_state & SS_ISDISCONNECTED) {
4615                 SCTP_INP_RUNLOCK(inp);
4616                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ECONNABORTED);
4617                 return (ECONNABORTED);
4618         }
4619         stcb = LIST_FIRST(&inp->sctp_asoc_list);
4620         if (stcb == NULL) {
4621                 SCTP_INP_RUNLOCK(inp);
4622                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4623                 return (ECONNRESET);
4624         }
4625         SCTP_TCB_LOCK(stcb);
4626         SCTP_INP_RUNLOCK(inp);
4627         store = stcb->asoc.primary_destination->ro._l_addr;
4628         stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4629         SCTP_TCB_UNLOCK(stcb);
4630         switch (store.sa.sa_family) {
4631         case AF_INET:
4632                 {
4633                         struct sockaddr_in *sin;
4634
4635                         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
4636                         if (sin == NULL)
4637                                 return (ENOMEM);
4638                         sin->sin_family = AF_INET;
4639                         sin->sin_len = sizeof(*sin);
4640                         sin->sin_port = ((struct sockaddr_in *)&store)->sin_port;
4641                         sin->sin_addr = ((struct sockaddr_in *)&store)->sin_addr;
4642                         *addr = (struct sockaddr *)sin;
4643                         break;
4644                 }
4645 #ifdef INET6
4646         case AF_INET6:
4647                 {
4648                         struct sockaddr_in6 *sin6;
4649
4650                         SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
4651                         if (sin6 == NULL)
4652                                 return (ENOMEM);
4653                         sin6->sin6_family = AF_INET6;
4654                         sin6->sin6_len = sizeof(*sin6);
4655                         sin6->sin6_port = ((struct sockaddr_in6 *)&store)->sin6_port;
4656
4657                         sin6->sin6_addr = ((struct sockaddr_in6 *)&store)->sin6_addr;
4658                         if ((error = sa6_recoverscope(sin6)) != 0) {
4659                                 SCTP_FREE_SONAME(sin6);
4660                                 return (error);
4661                         }
4662                         *addr = (struct sockaddr *)sin6;
4663                         break;
4664                 }
4665 #endif
4666         default:
4667                 /* TSNH */
4668                 break;
4669         }
4670         /* Wake any delayed sleep action */
4671         if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) {
4672                 SCTP_INP_WLOCK(inp);
4673                 inp->sctp_flags &= ~SCTP_PCB_FLAGS_DONT_WAKE;
4674                 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT) {
4675                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
4676                         SCTP_INP_WUNLOCK(inp);
4677                         SOCKBUF_LOCK(&inp->sctp_socket->so_snd);
4678                         if (sowriteable(inp->sctp_socket)) {
4679                                 sowwakeup_locked(inp->sctp_socket);
4680                         } else {
4681                                 SOCKBUF_UNLOCK(&inp->sctp_socket->so_snd);
4682                         }
4683                         SCTP_INP_WLOCK(inp);
4684                 }
4685                 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT) {
4686                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
4687                         SCTP_INP_WUNLOCK(inp);
4688                         SOCKBUF_LOCK(&inp->sctp_socket->so_rcv);
4689                         if (soreadable(inp->sctp_socket)) {
4690                                 sctp_defered_wakeup_cnt++;
4691                                 sorwakeup_locked(inp->sctp_socket);
4692                         } else {
4693                                 SOCKBUF_UNLOCK(&inp->sctp_socket->so_rcv);
4694                         }
4695                         SCTP_INP_WLOCK(inp);
4696                 }
4697                 SCTP_INP_WUNLOCK(inp);
4698         }
4699         if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
4700                 SCTP_TCB_LOCK(stcb);
4701                 sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_7);
4702         }
4703         return (0);
4704 }
4705
4706 int
4707 sctp_ingetaddr(struct socket *so, struct sockaddr **addr)
4708 {
4709         struct sockaddr_in *sin;
4710         uint32_t vrf_id;
4711         struct sctp_inpcb *inp;
4712         struct sctp_ifa *sctp_ifa;
4713
4714         /*
4715          * Do the malloc first in case it blocks.
4716          */
4717         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
4718         if (sin == NULL)
4719                 return (ENOMEM);
4720         sin->sin_family = AF_INET;
4721         sin->sin_len = sizeof(*sin);
4722         inp = (struct sctp_inpcb *)so->so_pcb;
4723         if (!inp) {
4724                 SCTP_FREE_SONAME(sin);
4725                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4726                 return ECONNRESET;
4727         }
4728         SCTP_INP_RLOCK(inp);
4729         sin->sin_port = inp->sctp_lport;
4730         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
4731                 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4732                         struct sctp_tcb *stcb;
4733                         struct sockaddr_in *sin_a;
4734                         struct sctp_nets *net;
4735                         int fnd;
4736
4737                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
4738                         if (stcb == NULL) {
4739                                 goto notConn;
4740                         }
4741                         fnd = 0;
4742                         sin_a = NULL;
4743                         SCTP_TCB_LOCK(stcb);
4744                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
4745                                 sin_a = (struct sockaddr_in *)&net->ro._l_addr;
4746                                 if (sin_a == NULL)
4747                                         /* this will make coverity happy */
4748                                         continue;
4749
4750                                 if (sin_a->sin_family == AF_INET) {
4751                                         fnd = 1;
4752                                         break;
4753                                 }
4754                         }
4755                         if ((!fnd) || (sin_a == NULL)) {
4756                                 /* punt */
4757                                 SCTP_TCB_UNLOCK(stcb);
4758                                 goto notConn;
4759                         }
4760                         vrf_id = inp->def_vrf_id;
4761                         sctp_ifa = sctp_source_address_selection(inp,
4762                             stcb,
4763                             (sctp_route_t *) & net->ro,
4764                             net, 0, vrf_id);
4765                         if (sctp_ifa) {
4766                                 sin->sin_addr = sctp_ifa->address.sin.sin_addr;
4767                                 sctp_free_ifa(sctp_ifa);
4768                         }
4769                         SCTP_TCB_UNLOCK(stcb);
4770                 } else {
4771                         /* For the bound all case you get back 0 */
4772         notConn:
4773                         sin->sin_addr.s_addr = 0;
4774                 }
4775
4776         } else {
4777                 /* Take the first IPv4 address in the list */
4778                 struct sctp_laddr *laddr;
4779                 int fnd = 0;
4780
4781                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4782                         if (laddr->ifa->address.sa.sa_family == AF_INET) {
4783                                 struct sockaddr_in *sin_a;
4784
4785                                 sin_a = (struct sockaddr_in *)&laddr->ifa->address.sa;
4786                                 sin->sin_addr = sin_a->sin_addr;
4787                                 fnd = 1;
4788                                 break;
4789                         }
4790                 }
4791                 if (!fnd) {
4792                         SCTP_FREE_SONAME(sin);
4793                         SCTP_INP_RUNLOCK(inp);
4794                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
4795                         return ENOENT;
4796                 }
4797         }
4798         SCTP_INP_RUNLOCK(inp);
4799         (*addr) = (struct sockaddr *)sin;
4800         return (0);
4801 }
4802
4803 int
4804 sctp_peeraddr(struct socket *so, struct sockaddr **addr)
4805 {
4806         struct sockaddr_in *sin = (struct sockaddr_in *)*addr;
4807         int fnd;
4808         struct sockaddr_in *sin_a;
4809         struct sctp_inpcb *inp;
4810         struct sctp_tcb *stcb;
4811         struct sctp_nets *net;
4812
4813         /* Do the malloc first in case it blocks. */
4814         inp = (struct sctp_inpcb *)so->so_pcb;
4815         if ((inp == NULL) ||
4816             ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) {
4817                 /* UDP type and listeners will drop out here */
4818                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
4819                 return (ENOTCONN);
4820         }
4821         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
4822         if (sin == NULL)
4823                 return (ENOMEM);
4824         sin->sin_family = AF_INET;
4825         sin->sin_len = sizeof(*sin);
4826
4827         /* We must recapture incase we blocked */
4828         inp = (struct sctp_inpcb *)so->so_pcb;
4829         if (!inp) {
4830                 SCTP_FREE_SONAME(sin);
4831                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4832                 return ECONNRESET;
4833         }
4834         SCTP_INP_RLOCK(inp);
4835         stcb = LIST_FIRST(&inp->sctp_asoc_list);
4836         if (stcb) {
4837                 SCTP_TCB_LOCK(stcb);
4838         }
4839         SCTP_INP_RUNLOCK(inp);
4840         if (stcb == NULL) {
4841                 SCTP_FREE_SONAME(sin);
4842                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4843                 return ECONNRESET;
4844         }
4845         fnd = 0;
4846         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
4847                 sin_a = (struct sockaddr_in *)&net->ro._l_addr;
4848                 if (sin_a->sin_family == AF_INET) {
4849                         fnd = 1;
4850                         sin->sin_port = stcb->rport;
4851                         sin->sin_addr = sin_a->sin_addr;
4852                         break;
4853                 }
4854         }
4855         SCTP_TCB_UNLOCK(stcb);
4856         if (!fnd) {
4857                 /* No IPv4 address */
4858                 SCTP_FREE_SONAME(sin);
4859                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
4860                 return ENOENT;
4861         }
4862         (*addr) = (struct sockaddr *)sin;
4863         return (0);
4864 }
4865
4866 struct pr_usrreqs sctp_usrreqs = {
4867         .pru_abort = sctp_abort,
4868         .pru_accept = sctp_accept,
4869         .pru_attach = sctp_attach,
4870         .pru_bind = sctp_bind,
4871         .pru_connect = sctp_connect,
4872         .pru_control = in_control,
4873         .pru_close = sctp_close,
4874         .pru_detach = sctp_close,
4875         .pru_sopoll = sopoll_generic,
4876         .pru_flush = sctp_flush,
4877         .pru_disconnect = sctp_disconnect,
4878         .pru_listen = sctp_listen,
4879         .pru_peeraddr = sctp_peeraddr,
4880         .pru_send = sctp_sendm,
4881         .pru_shutdown = sctp_shutdown,
4882         .pru_sockaddr = sctp_ingetaddr,
4883         .pru_sosend = sctp_sosend,
4884         .pru_soreceive = sctp_soreceive
4885 };