sys/netinet/sctp_usrreq.c

   1 /*-
   2  * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are met:
   6  *
   7  * a) Redistributions of source code must retain the above copyright notice,
   8  *   this list of conditions and the following disclaimer.
   9  *
  10  * b) Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in
  12  *   the documentation and/or other materials provided with the distribution.
  13  *
  14  * c) Neither the name of Cisco Systems, Inc. nor the names of its
  15  *    contributors may be used to endorse or promote products derived
  16  *    from this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  20  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  22  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  28  * THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 /* $KAME: sctp_usrreq.c,v 1.48 2005/03/07 23:26:08 itojun Exp $  */
  32
  33 #include <sys/cdefs.h>
  34 __FBSDID("$FreeBSD$");
  35 #include <netinet/sctp_os.h>
  36 #include <sys/proc.h>
  37 #include <netinet/sctp_pcb.h>
  38 #include <netinet/sctp_header.h>
  39 #include <netinet/sctp_var.h>
  40 #if defined(INET6)
  41 #endif
  42 #include <netinet/sctp_sysctl.h>
  43 #include <netinet/sctp_output.h>
  44 #include <netinet/sctp_uio.h>
  45 #include <netinet/sctp_asconf.h>
  46 #include <netinet/sctputil.h>
  47 #include <netinet/sctp_indata.h>
  48 #include <netinet/sctp_timer.h>
  49 #include <netinet/sctp_auth.h>
  50 #include <netinet/sctp_bsd_addr.h>
  51 #include <netinet/sctp_cc_functions.h>
  52 #include <netinet/udp.h>
  53
  54
  55
  56
  57 void
  58 sctp_init(void)
  59 {
  60         u_long sb_max_adj;
  61
  62         bzero(&SCTP_BASE_STATS, sizeof(struct sctpstat));
  63
  64         /* Initialize and modify the sysctled variables */
  65         sctp_init_sysctls();
  66         if ((nmbclusters / 8) > SCTP_ASOC_MAX_CHUNKS_ON_QUEUE)
  67                 SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue) = (nmbclusters / 8);
  68         /*
  69          * Allow a user to take no more than 1/2 the number of clusters or
  70          * the SB_MAX whichever is smaller for the send window.
  71          */
  72         sb_max_adj = (u_long)((u_quad_t) (SB_MAX) * MCLBYTES / (MSIZE + MCLBYTES));
  73         SCTP_BASE_SYSCTL(sctp_sendspace) = min(sb_max_adj,
  74             (((uint32_t) nmbclusters / 2) * SCTP_DEFAULT_MAXSEGMENT));
  75         /*
  76          * Now for the recv window, should we take the same amount? or
  77          * should I do 1/2 the SB_MAX instead in the SB_MAX min above. For
  78          * now I will just copy.
  79          */
  80         SCTP_BASE_SYSCTL(sctp_recvspace) = SCTP_BASE_SYSCTL(sctp_sendspace);
  81
  82         SCTP_BASE_VAR(first_time) = 0;
  83         SCTP_BASE_VAR(sctp_pcb_initialized) = 0;
  84         sctp_pcb_init();
  85 #if defined(SCTP_PACKET_LOGGING)
  86         SCTP_BASE_VAR(packet_log_writers) = 0;
  87         SCTP_BASE_VAR(packet_log_end) = 0;
  88         bzero(&SCTP_BASE_VAR(packet_log_buffer), SCTP_PACKET_LOG_SIZE);
  89 #endif
  90
  91
  92 }
  93
  94 void
  95 sctp_finish(void)
  96 {
  97         sctp_pcb_finish();
  98 }
  99
 100
 101
 102 void
 103 sctp_pathmtu_adjustment(struct sctp_inpcb *inp,
 104     struct sctp_tcb *stcb,
 105     struct sctp_nets *net,
 106     uint16_t nxtsz)
 107 {
 108         struct sctp_tmit_chunk *chk;
 109         uint16_t overhead;
 110
 111         /* Adjust that too */
 112         stcb->asoc.smallest_mtu = nxtsz;
 113         /* now off to subtract IP_DF flag if needed */
 114 #ifdef SCTP_PRINT_FOR_B_AND_M
 115         SCTP_PRINTF("sctp_pathmtu_adjust called inp:%p stcb:%p net:%p nxtsz:%d\n",
 116             inp, stcb, net, nxtsz);
 117 #endif
 118         overhead = IP_HDR_SIZE;
 119         if (sctp_auth_is_required_chunk(SCTP_DATA, stcb->asoc.peer_auth_chunks)) {
 120                 overhead += sctp_get_auth_chunk_len(stcb->asoc.peer_hmac_id);
 121         }
 122         TAILQ_FOREACH(chk, &stcb->asoc.send_queue, sctp_next) {
 123                 if ((chk->send_size + overhead) > nxtsz) {
 124                         chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
 125                 }
 126         }
 127         TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
 128                 if ((chk->send_size + overhead) > nxtsz) {
 129                         /*
 130                          * For this guy we also mark for immediate resend
 131                          * since we sent to big of chunk
 132                          */
 133                         chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
 134                         if (chk->sent < SCTP_DATAGRAM_RESEND) {
 135                                 sctp_flight_size_decrease(chk);
 136                                 sctp_total_flight_decrease(stcb, chk);
 137                         }
 138                         if (chk->sent != SCTP_DATAGRAM_RESEND) {
 139                                 sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt);
 140                         }
 141                         chk->sent = SCTP_DATAGRAM_RESEND;
 142                         chk->rec.data.doing_fast_retransmit = 0;
 143                         if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FLIGHT_LOGGING_ENABLE) {
 144                                 sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_PMTU,
 145                                     chk->whoTo->flight_size,
 146                                     chk->book_size,
 147                                     (uintptr_t) chk->whoTo,
 148                                     chk->rec.data.TSN_seq);
 149                         }
 150                         /* Clear any time so NO RTT is being done */
 151                         chk->do_rtt = 0;
 152                 }
 153         }
 154 }
 155
 156 static void
 157 sctp_notify_mbuf(struct sctp_inpcb *inp,
 158     struct sctp_tcb *stcb,
 159     struct sctp_nets *net,
 160     struct ip *ip,
 161     struct sctphdr *sh)
 162 {
 163         struct icmp *icmph;
 164         int totsz, tmr_stopped = 0;
 165         uint16_t nxtsz;
 166
 167         /* protection */
 168         if ((inp == NULL) || (stcb == NULL) || (net == NULL) ||
 169             (ip == NULL) || (sh == NULL)) {
 170                 if (stcb != NULL) {
 171                         SCTP_TCB_UNLOCK(stcb);
 172                 }
 173                 return;
 174         }
 175         /* First job is to verify the vtag matches what I would send */
 176         if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) {
 177                 SCTP_TCB_UNLOCK(stcb);
 178                 return;
 179         }
 180         icmph = (struct icmp *)((caddr_t)ip - (sizeof(struct icmp) -
 181             sizeof(struct ip)));
 182         if (icmph->icmp_type != ICMP_UNREACH) {
 183                 /* We only care about unreachable */
 184                 SCTP_TCB_UNLOCK(stcb);
 185                 return;
 186         }
 187         if (icmph->icmp_code != ICMP_UNREACH_NEEDFRAG) {
 188                 /* not a unreachable message due to frag. */
 189                 SCTP_TCB_UNLOCK(stcb);
 190                 return;
 191         }
 192         totsz = ip->ip_len;
 193
 194         nxtsz = ntohs(icmph->icmp_nextmtu);
 195         if (nxtsz == 0) {
 196                 /*
 197                  * old type router that does not tell us what the next size
 198                  * mtu is. Rats we will have to guess (in a educated fashion
 199                  * of course)
 200                  */
 201                 nxtsz = find_next_best_mtu(totsz);
 202         }
 203         /* Stop any PMTU timer */
 204         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
 205                 tmr_stopped = 1;
 206                 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
 207                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_1);
 208         }
 209         /* Adjust destination size limit */
 210         if (net->mtu > nxtsz) {
 211                 net->mtu = nxtsz;
 212                 if (net->port) {
 213                         net->mtu -= sizeof(struct udphdr);
 214                 }
 215         }
 216         /* now what about the ep? */
 217         if (stcb->asoc.smallest_mtu > nxtsz) {
 218 #ifdef SCTP_PRINT_FOR_B_AND_M
 219                 SCTP_PRINTF("notify_mbuf (ICMP) calls sctp_pathmtu_adjust mtu:%d\n",
 220                     nxtsz);
 221 #endif
 222                 sctp_pathmtu_adjustment(inp, stcb, net, nxtsz);
 223         }
 224         if (tmr_stopped)
 225                 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
 226
 227         SCTP_TCB_UNLOCK(stcb);
 228 }
 229
 230
 231 void
 232 sctp_notify(struct sctp_inpcb *inp,
 233     struct ip *ip,
 234     struct sctphdr *sh,
 235     struct sockaddr *to,
 236     struct sctp_tcb *stcb,
 237     struct sctp_nets *net)
 238 {
 239 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
 240         struct socket *so;
 241
 242 #endif
 243         /* protection */
 244         int reason;
 245         struct icmp *icmph;
 246
 247
 248         if ((inp == NULL) || (stcb == NULL) || (net == NULL) ||
 249             (sh == NULL) || (to == NULL)) {
 250                 if (stcb)
 251                         SCTP_TCB_UNLOCK(stcb);
 252                 return;
 253         }
 254         /* First job is to verify the vtag matches what I would send */
 255         if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) {
 256                 SCTP_TCB_UNLOCK(stcb);
 257                 return;
 258         }
 259         icmph = (struct icmp *)((caddr_t)ip - (sizeof(struct icmp) -
 260             sizeof(struct ip)));
 261         if (icmph->icmp_type != ICMP_UNREACH) {
 262                 /* We only care about unreachable */
 263                 SCTP_TCB_UNLOCK(stcb);
 264                 return;
 265         }
 266         if ((icmph->icmp_code == ICMP_UNREACH_NET) ||
 267             (icmph->icmp_code == ICMP_UNREACH_HOST) ||
 268             (icmph->icmp_code == ICMP_UNREACH_NET_UNKNOWN) ||
 269             (icmph->icmp_code == ICMP_UNREACH_HOST_UNKNOWN) ||
 270             (icmph->icmp_code == ICMP_UNREACH_ISOLATED) ||
 271             (icmph->icmp_code == ICMP_UNREACH_NET_PROHIB) ||
 272             (icmph->icmp_code == ICMP_UNREACH_HOST_PROHIB) ||
 273             (icmph->icmp_code == ICMP_UNREACH_FILTER_PROHIB)) {
 274
 275                 /*
 276                  * Hmm reachablity problems we must examine closely. If its
 277                  * not reachable, we may have lost a network. Or if there is
 278                  * NO protocol at the other end named SCTP. well we consider
 279                  * it a OOTB abort.
 280                  */
 281                 if (net->dest_state & SCTP_ADDR_REACHABLE) {
 282                         /* Ok that destination is NOT reachable */
 283                         SCTP_PRINTF("ICMP (thresh %d/%d) takes interface %p down\n",
 284                             net->error_count,
 285                             net->failure_threshold,
 286                             net);
 287
 288                         net->dest_state &= ~SCTP_ADDR_REACHABLE;
 289                         net->dest_state |= SCTP_ADDR_NOT_REACHABLE;
 290                         /*
 291                          * JRS 5/14/07 - If a destination is unreachable,
 292                          * the PF bit is turned off.  This allows an
 293                          * unambiguous use of the PF bit for destinations
 294                          * that are reachable but potentially failed. If the
 295                          * destination is set to the unreachable state, also
 296                          * set the destination to the PF state.
 297                          */
 298                         /*
 299                          * Add debug message here if destination is not in
 300                          * PF state.
 301                          */
 302                         /* Stop any running T3 timers here? */
 303                         if (SCTP_BASE_SYSCTL(sctp_cmt_on_off) && SCTP_BASE_SYSCTL(sctp_cmt_pf)) {
 304                                 net->dest_state &= ~SCTP_ADDR_PF;
 305                                 SCTPDBG(SCTP_DEBUG_TIMER4, "Destination %p moved from PF to unreachable.\n",
 306                                     net);
 307                         }
 308                         net->error_count = net->failure_threshold + 1;
 309                         sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN,
 310                             stcb, SCTP_FAILED_THRESHOLD,
 311                             (void *)net, SCTP_SO_NOT_LOCKED);
 312                 }
 313                 SCTP_TCB_UNLOCK(stcb);
 314         } else if ((icmph->icmp_code == ICMP_UNREACH_PROTOCOL) ||
 315             (icmph->icmp_code == ICMP_UNREACH_PORT)) {
 316                 /*
 317                  * Here the peer is either playing tricks on us, including
 318                  * an address that belongs to someone who does not support
 319                  * SCTP OR was a userland implementation that shutdown and
 320                  * now is dead. In either case treat it like a OOTB abort
 321                  * with no TCB
 322                  */
 323                 reason = SCTP_PEER_FAULTY;
 324                 sctp_abort_notification(stcb, reason, SCTP_SO_NOT_LOCKED);
 325 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
 326                 so = SCTP_INP_SO(inp);
 327                 atomic_add_int(&stcb->asoc.refcnt, 1);
 328                 SCTP_TCB_UNLOCK(stcb);
 329                 SCTP_SOCKET_LOCK(so, 1);
 330                 SCTP_TCB_LOCK(stcb);
 331                 atomic_subtract_int(&stcb->asoc.refcnt, 1);
 332 #endif
 333                 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_2);
 334 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
 335                 SCTP_SOCKET_UNLOCK(so, 1);
 336                 /* SCTP_TCB_UNLOCK(stcb); MT: I think this is not needed. */
 337 #endif
 338                 /* no need to unlock here, since the TCB is gone */
 339         } else {
 340                 SCTP_TCB_UNLOCK(stcb);
 341         }
 342 }
 343
 344 void
 345 sctp_ctlinput(cmd, sa, vip)
 346         int cmd;
 347         struct sockaddr *sa;
 348         void *vip;
 349 {
 350         struct ip *ip = vip;
 351         struct sctphdr *sh;
 352         uint32_t vrf_id;
 353
 354         /* FIX, for non-bsd is this right? */
 355         vrf_id = SCTP_DEFAULT_VRFID;
 356         if (sa->sa_family != AF_INET ||
 357             ((struct sockaddr_in *)sa)->sin_addr.s_addr == INADDR_ANY) {
 358                 return;
 359         }
 360         if (PRC_IS_REDIRECT(cmd)) {
 361                 ip = 0;
 362         } else if ((unsigned)cmd >= PRC_NCMDS || inetctlerrmap[cmd] == 0) {
 363                 return;
 364         }
 365         if (ip) {
 366                 struct sctp_inpcb *inp = NULL;
 367                 struct sctp_tcb *stcb = NULL;
 368                 struct sctp_nets *net = NULL;
 369                 struct sockaddr_in to, from;
 370
 371                 sh = (struct sctphdr *)((caddr_t)ip + (ip->ip_hl << 2));
 372                 bzero(&to, sizeof(to));
 373                 bzero(&from, sizeof(from));
 374                 from.sin_family = to.sin_family = AF_INET;
 375                 from.sin_len = to.sin_len = sizeof(to);
 376                 from.sin_port = sh->src_port;
 377                 from.sin_addr = ip->ip_src;
 378                 to.sin_port = sh->dest_port;
 379                 to.sin_addr = ip->ip_dst;
 380
 381                 /*
 382                  * 'to' holds the dest of the packet that failed to be sent.
 383                  * 'from' holds our local endpoint address. Thus we reverse
 384                  * the to and the from in the lookup.
 385                  */
 386                 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&from,
 387                     (struct sockaddr *)&to,
 388                     &inp, &net, 1, vrf_id);
 389                 if (stcb != NULL && inp && (inp->sctp_socket != NULL)) {
 390                         if (cmd != PRC_MSGSIZE) {
 391                                 sctp_notify(inp, ip, sh,
 392                                     (struct sockaddr *)&to, stcb,
 393                                     net);
 394                         } else {
 395                                 /* handle possible ICMP size messages */
 396                                 sctp_notify_mbuf(inp, stcb, net, ip, sh);
 397                         }
 398                 } else {
 399                         if ((stcb == NULL) && (inp != NULL)) {
 400                                 /* reduce ref-count */
 401                                 SCTP_INP_WLOCK(inp);
 402                                 SCTP_INP_DECR_REF(inp);
 403                                 SCTP_INP_WUNLOCK(inp);
 404                         }
 405                 }
 406         }
 407         return;
 408 }
 409
 410 static int
 411 sctp_getcred(SYSCTL_HANDLER_ARGS)
 412 {
 413         struct xucred xuc;
 414         struct sockaddr_in addrs[2];
 415         struct sctp_inpcb *inp;
 416         struct sctp_nets *net;
 417         struct sctp_tcb *stcb;
 418         int error;
 419         uint32_t vrf_id;
 420
 421         /* FIX, for non-bsd is this right? */
 422         vrf_id = SCTP_DEFAULT_VRFID;
 423
 424         error = priv_check(req->td, PRIV_NETINET_GETCRED);
 425
 426         if (error)
 427                 return (error);
 428
 429         error = SYSCTL_IN(req, addrs, sizeof(addrs));
 430         if (error)
 431                 return (error);
 432
 433         stcb = sctp_findassociation_addr_sa(sintosa(&addrs[0]),
 434             sintosa(&addrs[1]),
 435             &inp, &net, 1, vrf_id);
 436         if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) {
 437                 if ((inp != NULL) && (stcb == NULL)) {
 438                         /* reduce ref-count */
 439                         SCTP_INP_WLOCK(inp);
 440                         SCTP_INP_DECR_REF(inp);
 441                         goto cred_can_cont;
 442                 }
 443                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
 444                 error = ENOENT;
 445                 goto out;
 446         }
 447         SCTP_TCB_UNLOCK(stcb);
 448         /*
 449          * We use the write lock here, only since in the error leg we need
 450          * it. If we used RLOCK, then we would have to
 451          * wlock/decr/unlock/rlock. Which in theory could create a hole.
 452          * Better to use higher wlock.
 453          */
 454         SCTP_INP_WLOCK(inp);
 455 cred_can_cont:
 456         error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket);
 457         if (error) {
 458                 SCTP_INP_WUNLOCK(inp);
 459                 goto out;
 460         }
 461         cru2x(inp->sctp_socket->so_cred, &xuc);
 462         SCTP_INP_WUNLOCK(inp);
 463         error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred));
 464 out:
 465         return (error);
 466 }
 467
 468 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW,
 469     0, 0, sctp_getcred, "S,ucred", "Get the ucred of a SCTP connection");
 470
 471
 472 static void
 473 sctp_abort(struct socket *so)
 474 {
 475         struct sctp_inpcb *inp;
 476         uint32_t flags;
 477
 478         inp = (struct sctp_inpcb *)so->so_pcb;
 479         if (inp == 0) {
 480                 return;
 481         }
 482 sctp_must_try_again:
 483         flags = inp->sctp_flags;
 484 #ifdef SCTP_LOG_CLOSING
 485         sctp_log_closing(inp, NULL, 17);
 486 #endif
 487         if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
 488             (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
 489 #ifdef SCTP_LOG_CLOSING
 490                 sctp_log_closing(inp, NULL, 16);
 491 #endif
 492                 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
 493                     SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
 494                 SOCK_LOCK(so);
 495                 SCTP_SB_CLEAR(so->so_snd);
 496                 /*
 497                  * same for the rcv ones, they are only here for the
 498                  * accounting/select.
 499                  */
 500                 SCTP_SB_CLEAR(so->so_rcv);
 501
 502                 /* Now null out the reference, we are completely detached. */
 503                 so->so_pcb = NULL;
 504                 SOCK_UNLOCK(so);
 505         } else {
 506                 flags = inp->sctp_flags;
 507                 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
 508                         goto sctp_must_try_again;
 509                 }
 510         }
 511         return;
 512 }
 513
 514 static int
 515 sctp_attach(struct socket *so, int proto, struct thread *p)
 516 {
 517         struct sctp_inpcb *inp;
 518         struct inpcb *ip_inp;
 519         int error;
 520         uint32_t vrf_id = SCTP_DEFAULT_VRFID;
 521
 522 #ifdef IPSEC
 523         uint32_t flags;
 524
 525 #endif
 526
 527         inp = (struct sctp_inpcb *)so->so_pcb;
 528         if (inp != 0) {
 529                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 530                 return EINVAL;
 531         }
 532         if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
 533                 error = SCTP_SORESERVE(so, SCTP_BASE_SYSCTL(sctp_sendspace), SCTP_BASE_SYSCTL(sctp_recvspace));
 534                 if (error) {
 535                         return error;
 536                 }
 537         }
 538         error = sctp_inpcb_alloc(so, vrf_id);
 539         if (error) {
 540                 return error;
 541         }
 542         inp = (struct sctp_inpcb *)so->so_pcb;
 543         SCTP_INP_WLOCK(inp);
 544         inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUND_V6;    /* I'm not v6! */
 545         ip_inp = &inp->ip_inp.inp;
 546         ip_inp->inp_vflag |= INP_IPV4;
 547         ip_inp->inp_ip_ttl = MODULE_GLOBAL(MOD_INET, ip_defttl);
 548 #ifdef IPSEC
 549         error = ipsec_init_policy(so, &ip_inp->inp_sp);
 550 #ifdef SCTP_LOG_CLOSING
 551         sctp_log_closing(inp, NULL, 17);
 552 #endif
 553         if (error != 0) {
 554                 flags = inp->sctp_flags;
 555                 if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
 556                     (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
 557 #ifdef SCTP_LOG_CLOSING
 558                         sctp_log_closing(inp, NULL, 15);
 559 #endif
 560                         SCTP_INP_WUNLOCK(inp);
 561                         sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
 562                             SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
 563                 } else {
 564                         SCTP_INP_WUNLOCK(inp);
 565                 }
 566                 return error;
 567         }
 568 #endif                          /* IPSEC */
 569         SCTP_INP_WUNLOCK(inp);
 570         return 0;
 571 }
 572
 573 static int
 574 sctp_bind(struct socket *so, struct sockaddr *addr, struct thread *p)
 575 {
 576         struct sctp_inpcb *inp = NULL;
 577         int error;
 578
 579 #ifdef INET6
 580         if (addr && addr->sa_family != AF_INET) {
 581                 /* must be a v4 address! */
 582                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 583                 return EINVAL;
 584         }
 585 #endif                          /* INET6 */
 586         if (addr && (addr->sa_len != sizeof(struct sockaddr_in))) {
 587                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 588                 return EINVAL;
 589         }
 590         inp = (struct sctp_inpcb *)so->so_pcb;
 591         if (inp == 0) {
 592                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 593                 return EINVAL;
 594         }
 595         error = sctp_inpcb_bind(so, addr, NULL, p);
 596         return error;
 597 }
 598
 599 void
 600 sctp_close(struct socket *so)
 601 {
 602         struct sctp_inpcb *inp;
 603         uint32_t flags;
 604
 605         inp = (struct sctp_inpcb *)so->so_pcb;
 606         if (inp == 0)
 607                 return;
 608
 609         /*
 610          * Inform all the lower layer assoc that we are done.
 611          */
 612 sctp_must_try_again:
 613         flags = inp->sctp_flags;
 614 #ifdef SCTP_LOG_CLOSING
 615         sctp_log_closing(inp, NULL, 17);
 616 #endif
 617         if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
 618             (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
 619                 if (((so->so_options & SO_LINGER) && (so->so_linger == 0)) ||
 620                     (so->so_rcv.sb_cc > 0)) {
 621 #ifdef SCTP_LOG_CLOSING
 622                         sctp_log_closing(inp, NULL, 13);
 623 #endif
 624                         sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
 625                             SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
 626                 } else {
 627 #ifdef SCTP_LOG_CLOSING
 628                         sctp_log_closing(inp, NULL, 14);
 629 #endif
 630                         sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
 631                             SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
 632                 }
 633                 /*
 634                  * The socket is now detached, no matter what the state of
 635                  * the SCTP association.
 636                  */
 637                 SOCK_LOCK(so);
 638                 SCTP_SB_CLEAR(so->so_snd);
 639                 /*
 640                  * same for the rcv ones, they are only here for the
 641                  * accounting/select.
 642                  */
 643                 SCTP_SB_CLEAR(so->so_rcv);
 644
 645                 /* Now null out the reference, we are completely detached. */
 646                 so->so_pcb = NULL;
 647                 SOCK_UNLOCK(so);
 648         } else {
 649                 flags = inp->sctp_flags;
 650                 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
 651                         goto sctp_must_try_again;
 652                 }
 653         }
 654         return;
 655 }
 656
 657
 658 int
 659 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
 660     struct mbuf *control, struct thread *p);
 661
 662
 663 int
 664 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
 665     struct mbuf *control, struct thread *p)
 666 {
 667         struct sctp_inpcb *inp;
 668         int error;
 669
 670         inp = (struct sctp_inpcb *)so->so_pcb;
 671         if (inp == 0) {
 672                 if (control) {
 673                         sctp_m_freem(control);
 674                         control = NULL;
 675                 }
 676                 SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 677                 sctp_m_freem(m);
 678                 return EINVAL;
 679         }
 680         /* Got to have an to address if we are NOT a connected socket */
 681         if ((addr == NULL) &&
 682             ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) ||
 683             (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE))
 684             ) {
 685                 goto connected_type;
 686         } else if (addr == NULL) {
 687                 SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EDESTADDRREQ);
 688                 error = EDESTADDRREQ;
 689                 sctp_m_freem(m);
 690                 if (control) {
 691                         sctp_m_freem(control);
 692                         control = NULL;
 693                 }
 694                 return (error);
 695         }
 696 #ifdef INET6
 697         if (addr->sa_family != AF_INET) {
 698                 /* must be a v4 address! */
 699                 SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EDESTADDRREQ);
 700                 sctp_m_freem(m);
 701                 if (control) {
 702                         sctp_m_freem(control);
 703                         control = NULL;
 704                 }
 705                 error = EDESTADDRREQ;
 706                 return EDESTADDRREQ;
 707         }
 708 #endif                          /* INET6 */
 709 connected_type:
 710         /* now what about control */
 711         if (control) {
 712                 if (inp->control) {
 713                         SCTP_PRINTF("huh? control set?\n");
 714                         sctp_m_freem(inp->control);
 715                         inp->control = NULL;
 716                 }
 717                 inp->control = control;
 718         }
 719         /* Place the data */
 720         if (inp->pkt) {
 721                 SCTP_BUF_NEXT(inp->pkt_last) = m;
 722                 inp->pkt_last = m;
 723         } else {
 724                 inp->pkt_last = inp->pkt = m;
 725         }
 726         if (
 727         /* FreeBSD uses a flag passed */
 728             ((flags & PRUS_MORETOCOME) == 0)
 729             ) {
 730                 /*
 731                  * note with the current version this code will only be used
 732                  * by OpenBSD-- NetBSD, FreeBSD, and MacOS have methods for
 733                  * re-defining sosend to use the sctp_sosend. One can
 734                  * optionally switch back to this code (by changing back the
 735                  * definitions) but this is not advisable. This code is used
 736                  * by FreeBSD when sending a file with sendfile() though.
 737                  */
 738                 int ret;
 739
 740                 ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags);
 741                 inp->pkt = NULL;
 742                 inp->control = NULL;
 743                 return (ret);
 744         } else {
 745                 return (0);
 746         }
 747 }
 748
 749 int
 750 sctp_disconnect(struct socket *so)
 751 {
 752         struct sctp_inpcb *inp;
 753
 754         inp = (struct sctp_inpcb *)so->so_pcb;
 755         if (inp == NULL) {
 756                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
 757                 return (ENOTCONN);
 758         }
 759         SCTP_INP_RLOCK(inp);
 760         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
 761             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
 762                 if (SCTP_LIST_EMPTY(&inp->sctp_asoc_list)) {
 763                         /* No connection */
 764                         SCTP_INP_RUNLOCK(inp);
 765                         return (0);
 766                 } else {
 767                         struct sctp_association *asoc;
 768                         struct sctp_tcb *stcb;
 769
 770                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
 771                         if (stcb == NULL) {
 772                                 SCTP_INP_RUNLOCK(inp);
 773                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 774                                 return (EINVAL);
 775                         }
 776                         SCTP_TCB_LOCK(stcb);
 777                         asoc = &stcb->asoc;
 778                         if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
 779                                 /* We are about to be freed, out of here */
 780                                 SCTP_TCB_UNLOCK(stcb);
 781                                 SCTP_INP_RUNLOCK(inp);
 782                                 return (0);
 783                         }
 784                         if (((so->so_options & SO_LINGER) &&
 785                             (so->so_linger == 0)) ||
 786                             (so->so_rcv.sb_cc > 0)) {
 787                                 if (SCTP_GET_STATE(asoc) !=
 788                                     SCTP_STATE_COOKIE_WAIT) {
 789                                         /* Left with Data unread */
 790                                         struct mbuf *err;
 791
 792                                         err = sctp_get_mbuf_for_msg(sizeof(struct sctp_paramhdr), 0, M_DONTWAIT, 1, MT_DATA);
 793                                         if (err) {
 794                                                 /*
 795                                                  * Fill in the user
 796                                                  * initiated abort
 797                                                  */
 798                                                 struct sctp_paramhdr *ph;
 799
 800                                                 ph = mtod(err, struct sctp_paramhdr *);
 801                                                 SCTP_BUF_LEN(err) = sizeof(struct sctp_paramhdr);
 802                                                 ph->param_type = htons(SCTP_CAUSE_USER_INITIATED_ABT);
 803                                                 ph->param_length = htons(SCTP_BUF_LEN(err));
 804                                         }
 805 #if defined(SCTP_PANIC_ON_ABORT)
 806                                         panic("disconnect does an abort");
 807 #endif
 808                                         sctp_send_abort_tcb(stcb, err, SCTP_SO_LOCKED);
 809                                         SCTP_STAT_INCR_COUNTER32(sctps_aborted);
 810                                 }
 811                                 SCTP_INP_RUNLOCK(inp);
 812                                 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
 813                                     (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 814                                         SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 815                                 }
 816                                 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_3);
 817                                 /* No unlock tcb assoc is gone */
 818                                 return (0);
 819                         }
 820                         if (TAILQ_EMPTY(&asoc->send_queue) &&
 821                             TAILQ_EMPTY(&asoc->sent_queue) &&
 822                             (asoc->stream_queue_cnt == 0)) {
 823                                 /* there is nothing queued to send, so done */
 824                                 if (asoc->locked_on_sending) {
 825                                         goto abort_anyway;
 826                                 }
 827                                 if ((SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
 828                                     (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
 829                                         /* only send SHUTDOWN 1st time thru */
 830                                         sctp_stop_timers_for_shutdown(stcb);
 831                                         sctp_send_shutdown(stcb,
 832                                             stcb->asoc.primary_destination);
 833                                         sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_LOCKED);
 834                                         if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
 835                                             (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 836                                                 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 837                                         }
 838                                         SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT);
 839                                         SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING);
 840                                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN,
 841                                             stcb->sctp_ep, stcb,
 842                                             asoc->primary_destination);
 843                                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD,
 844                                             stcb->sctp_ep, stcb,
 845                                             asoc->primary_destination);
 846                                 }
 847                         } else {
 848                                 /*
 849                                  * we still got (or just got) data to send,
 850                                  * so set SHUTDOWN_PENDING
 851                                  */
 852                                 /*
 853                                  * XXX sockets draft says that SCTP_EOF
 854                                  * should be sent with no data. currently,
 855                                  * we will allow user data to be sent first
 856                                  * and move to SHUTDOWN-PENDING
 857                                  */
 858                                 asoc->state |= SCTP_STATE_SHUTDOWN_PENDING;
 859                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb,
 860                                     asoc->primary_destination);
 861                                 if (asoc->locked_on_sending) {
 862                                         /* Locked to send out the data */
 863                                         struct sctp_stream_queue_pending *sp;
 864
 865                                         sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead);
 866                                         if (sp == NULL) {
 867                                                 SCTP_PRINTF("Error, sp is NULL, locked on sending is non-null strm:%d\n",
 868                                                     asoc->locked_on_sending->stream_no);
 869                                         } else {
 870                                                 if ((sp->length == 0) && (sp->msg_is_complete == 0))
 871                                                         asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT;
 872                                         }
 873                                 }
 874                                 if (TAILQ_EMPTY(&asoc->send_queue) &&
 875                                     TAILQ_EMPTY(&asoc->sent_queue) &&
 876                                     (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
 877                                         struct mbuf *op_err;
 878
 879                         abort_anyway:
 880                                         op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
 881                                             0, M_DONTWAIT, 1, MT_DATA);
 882                                         if (op_err) {
 883                                                 /*
 884                                                  * Fill in the user
 885                                                  * initiated abort
 886                                                  */
 887                                                 struct sctp_paramhdr *ph;
 888                                                 uint32_t *ippp;
 889
 890                                                 SCTP_BUF_LEN(op_err) =
 891                                                     (sizeof(struct sctp_paramhdr) + sizeof(uint32_t));
 892                                                 ph = mtod(op_err,
 893                                                     struct sctp_paramhdr *);
 894                                                 ph->param_type = htons(
 895                                                     SCTP_CAUSE_USER_INITIATED_ABT);
 896                                                 ph->param_length = htons(SCTP_BUF_LEN(op_err));
 897                                                 ippp = (uint32_t *) (ph + 1);
 898                                                 *ippp = htonl(SCTP_FROM_SCTP_USRREQ + SCTP_LOC_4);
 899                                         }
 900 #if defined(SCTP_PANIC_ON_ABORT)
 901                                         panic("disconnect does an abort");
 902 #endif
 903
 904                                         stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_USRREQ + SCTP_LOC_4;
 905                                         sctp_send_abort_tcb(stcb, op_err, SCTP_SO_LOCKED);
 906                                         SCTP_STAT_INCR_COUNTER32(sctps_aborted);
 907                                         if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
 908                                             (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 909                                                 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 910                                         }
 911                                         SCTP_INP_RUNLOCK(inp);
 912                                         (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_5);
 913                                         return (0);
 914                                 } else {
 915                                         sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
 916                                 }
 917                         }
 918                         soisdisconnecting(so);
 919                         SCTP_TCB_UNLOCK(stcb);
 920                         SCTP_INP_RUNLOCK(inp);
 921                         return (0);
 922                 }
 923                 /* not reached */
 924         } else {
 925                 /* UDP model does not support this */
 926                 SCTP_INP_RUNLOCK(inp);
 927                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
 928                 return EOPNOTSUPP;
 929         }
 930 }
 931
 932 int
 933 sctp_flush(struct socket *so, int how)
 934 {
 935         /*
 936          * We will just clear out the values and let subsequent close clear
 937          * out the data, if any. Note if the user did a shutdown(SHUT_RD)
 938          * they will not be able to read the data, the socket will block
 939          * that from happening.
 940          */
 941         if ((how == PRU_FLUSH_RD) || (how == PRU_FLUSH_RDWR)) {
 942                 /*
 943                  * First make sure the sb will be happy, we don't use these
 944                  * except maybe the count
 945                  */
 946                 so->so_rcv.sb_cc = 0;
 947                 so->so_rcv.sb_mbcnt = 0;
 948                 so->so_rcv.sb_mb = NULL;
 949         }
 950         if ((how == PRU_FLUSH_WR) || (how == PRU_FLUSH_RDWR)) {
 951                 /*
 952                  * First make sure the sb will be happy, we don't use these
 953                  * except maybe the count
 954                  */
 955                 so->so_snd.sb_cc = 0;
 956                 so->so_snd.sb_mbcnt = 0;
 957                 so->so_snd.sb_mb = NULL;
 958
 959         }
 960         return (0);
 961 }
 962
 963 int
 964 sctp_shutdown(struct socket *so)
 965 {
 966         struct sctp_inpcb *inp;
 967
 968         inp = (struct sctp_inpcb *)so->so_pcb;
 969         if (inp == 0) {
 970                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 971                 return EINVAL;
 972         }
 973         SCTP_INP_RLOCK(inp);
 974         /* For UDP model this is a invalid call */
 975         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
 976                 /* Restore the flags that the soshutdown took away. */
 977                 so->so_rcv.sb_state &= ~SBS_CANTRCVMORE;
 978                 /* This proc will wakeup for read and do nothing (I hope) */
 979                 SCTP_INP_RUNLOCK(inp);
 980                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
 981                 return (EOPNOTSUPP);
 982         }
 983         /*
 984          * Ok if we reach here its the TCP model and it is either a SHUT_WR
 985          * or SHUT_RDWR. This means we put the shutdown flag against it.
 986          */
 987         {
 988                 struct sctp_tcb *stcb;
 989                 struct sctp_association *asoc;
 990
 991                 if ((so->so_state &
 992                     (SS_ISCONNECTED | SS_ISCONNECTING | SS_ISDISCONNECTING)) == 0) {
 993                         SCTP_INP_RUNLOCK(inp);
 994                         return (ENOTCONN);
 995                 }
 996                 socantsendmore(so);
 997
 998                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
 999                 if (stcb == NULL) {
1000                         /*
1001                          * Ok we hit the case that the shutdown call was
1002                          * made after an abort or something. Nothing to do
1003                          * now.
1004                          */
1005                         SCTP_INP_RUNLOCK(inp);
1006                         return (0);
1007                 }
1008                 SCTP_TCB_LOCK(stcb);
1009                 asoc = &stcb->asoc;
1010                 if (TAILQ_EMPTY(&asoc->send_queue) &&
1011                     TAILQ_EMPTY(&asoc->sent_queue) &&
1012                     (asoc->stream_queue_cnt == 0)) {
1013                         if (asoc->locked_on_sending) {
1014                                 goto abort_anyway;
1015                         }
1016                         /* there is nothing queued to send, so I'm done... */
1017                         if (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) {
1018                                 /* only send SHUTDOWN the first time through */
1019                                 sctp_stop_timers_for_shutdown(stcb);
1020                                 sctp_send_shutdown(stcb,
1021                                     stcb->asoc.primary_destination);
1022                                 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_LOCKED);
1023                                 if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
1024                                     (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
1025                                         SCTP_STAT_DECR_GAUGE32(sctps_currestab);
1026                                 }
1027                                 SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT);
1028                                 SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING);
1029                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN,
1030                                     stcb->sctp_ep, stcb,
1031                                     asoc->primary_destination);
1032                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD,
1033                                     stcb->sctp_ep, stcb,
1034                                     asoc->primary_destination);
1035                         }
1036                 } else {
1037                         /*
1038                          * we still got (or just got) data to send, so set
1039                          * SHUTDOWN_PENDING
1040                          */
1041                         asoc->state |= SCTP_STATE_SHUTDOWN_PENDING;
1042                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb,
1043                             asoc->primary_destination);
1044
1045                         if (asoc->locked_on_sending) {
1046                                 /* Locked to send out the data */
1047                                 struct sctp_stream_queue_pending *sp;
1048
1049                                 sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead);
1050                                 if (sp == NULL) {
1051                                         SCTP_PRINTF("Error, sp is NULL, locked on sending is non-null strm:%d\n",
1052                                             asoc->locked_on_sending->stream_no);
1053                                 } else {
1054                                         if ((sp->length == 0) && (sp->msg_is_complete == 0)) {
1055                                                 asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT;
1056                                         }
1057                                 }
1058                         }
1059                         if (TAILQ_EMPTY(&asoc->send_queue) &&
1060                             TAILQ_EMPTY(&asoc->sent_queue) &&
1061                             (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
1062                                 struct mbuf *op_err;
1063
1064                 abort_anyway:
1065                                 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
1066                                     0, M_DONTWAIT, 1, MT_DATA);
1067                                 if (op_err) {
1068                                         /* Fill in the user initiated abort */
1069                                         struct sctp_paramhdr *ph;
1070                                         uint32_t *ippp;
1071
1072                                         SCTP_BUF_LEN(op_err) =
1073                                             sizeof(struct sctp_paramhdr) + sizeof(uint32_t);
1074                                         ph = mtod(op_err,
1075                                             struct sctp_paramhdr *);
1076                                         ph->param_type = htons(
1077                                             SCTP_CAUSE_USER_INITIATED_ABT);
1078                                         ph->param_length = htons(SCTP_BUF_LEN(op_err));
1079                                         ippp = (uint32_t *) (ph + 1);
1080                                         *ippp = htonl(SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6);
1081                                 }
1082 #if defined(SCTP_PANIC_ON_ABORT)
1083                                 panic("shutdown does an abort");
1084 #endif
1085                                 stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6;
1086                                 sctp_abort_an_association(stcb->sctp_ep, stcb,
1087                                     SCTP_RESPONSE_TO_USER_REQ,
1088                                     op_err, SCTP_SO_LOCKED);
1089                                 goto skip_unlock;
1090                         } else {
1091                                 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
1092                         }
1093                 }
1094                 SCTP_TCB_UNLOCK(stcb);
1095         }
1096 skip_unlock:
1097         SCTP_INP_RUNLOCK(inp);
1098         return 0;
1099 }
1100
1101 /*
1102  * copies a "user" presentable address and removes embedded scope, etc.
1103  * returns 0 on success, 1 on error
1104  */
1105 static uint32_t
1106 sctp_fill_user_address(struct sockaddr_storage *ss, struct sockaddr *sa)
1107 {
1108 #ifdef INET6
1109         struct sockaddr_in6 lsa6;
1110
1111         sa = (struct sockaddr *)sctp_recover_scope((struct sockaddr_in6 *)sa,
1112             &lsa6);
1113 #endif
1114         memcpy(ss, sa, sa->sa_len);
1115         return (0);
1116 }
1117
1118
1119
1120 /*
1121  * NOTE: assumes addr lock is held
1122  */
1123 static size_t
1124 sctp_fill_up_addresses_vrf(struct sctp_inpcb *inp,
1125     struct sctp_tcb *stcb,
1126     size_t limit,
1127     struct sockaddr_storage *sas,
1128     uint32_t vrf_id)
1129 {
1130         struct sctp_ifn *sctp_ifn;
1131         struct sctp_ifa *sctp_ifa;
1132         int loopback_scope, ipv4_local_scope, local_scope, site_scope;
1133         size_t actual;
1134         int ipv4_addr_legal, ipv6_addr_legal;
1135         struct sctp_vrf *vrf;
1136
1137         actual = 0;
1138         if (limit <= 0)
1139                 return (actual);
1140
1141         if (stcb) {
1142                 /* Turn on all the appropriate scope */
1143                 loopback_scope = stcb->asoc.loopback_scope;
1144                 ipv4_local_scope = stcb->asoc.ipv4_local_scope;
1145                 local_scope = stcb->asoc.local_scope;
1146                 site_scope = stcb->asoc.site_scope;
1147         } else {
1148                 /* Turn on ALL scope, since we look at the EP */
1149                 loopback_scope = ipv4_local_scope = local_scope =
1150                     site_scope = 1;
1151         }
1152         ipv4_addr_legal = ipv6_addr_legal = 0;
1153         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1154                 ipv6_addr_legal = 1;
1155                 if (SCTP_IPV6_V6ONLY(inp) == 0) {
1156                         ipv4_addr_legal = 1;
1157                 }
1158         } else {
1159                 ipv4_addr_legal = 1;
1160         }
1161         vrf = sctp_find_vrf(vrf_id);
1162         if (vrf == NULL) {
1163                 return (0);
1164         }
1165         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1166                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
1167                         if ((loopback_scope == 0) &&
1168                             SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
1169                                 /* Skip loopback if loopback_scope not set */
1170                                 continue;
1171                         }
1172                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
1173                                 if (stcb) {
1174                                         /*
1175                                          * For the BOUND-ALL case, the list
1176                                          * associated with a TCB is Always
1177                                          * considered a reverse list.. i.e.
1178                                          * it lists addresses that are NOT
1179                                          * part of the association. If this
1180                                          * is one of those we must skip it.
1181                                          */
1182                                         if (sctp_is_addr_restricted(stcb,
1183                                             sctp_ifa)) {
1184                                                 continue;
1185                                         }
1186                                 }
1187                                 switch (sctp_ifa->address.sa.sa_family) {
1188                                 case AF_INET:
1189                                         if (ipv4_addr_legal) {
1190                                                 struct sockaddr_in *sin;
1191
1192                                                 sin = (struct sockaddr_in *)&sctp_ifa->address.sa;
1193                                                 if (sin->sin_addr.s_addr == 0) {
1194                                                         /*
1195                                                          * we skip
1196                                                          * unspecifed
1197                                                          * addresses
1198                                                          */
1199                                                         continue;
1200                                                 }
1201                                                 if ((ipv4_local_scope == 0) &&
1202                                                     (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
1203                                                         continue;
1204                                                 }
1205 #ifdef INET6
1206                                                 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
1207                                                         in6_sin_2_v4mapsin6(sin, (struct sockaddr_in6 *)sas);
1208                                                         ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
1209                                                         sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(struct sockaddr_in6));
1210                                                         actual += sizeof(struct sockaddr_in6);
1211                                                 } else {
1212 #endif
1213                                                         memcpy(sas, sin, sizeof(*sin));
1214                                                         ((struct sockaddr_in *)sas)->sin_port = inp->sctp_lport;
1215                                                         sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(*sin));
1216                                                         actual += sizeof(*sin);
1217 #ifdef INET6
1218                                                 }
1219 #endif
1220                                                 if (actual >= limit) {
1221                                                         return (actual);
1222                                                 }
1223                                         } else {
1224                                                 continue;
1225                                         }
1226                                         break;
1227 #ifdef INET6
1228                                 case AF_INET6:
1229                                         if (ipv6_addr_legal) {
1230                                                 struct sockaddr_in6 *sin6;
1231
1232                                                 sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa;
1233                                                 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1234                                                         /*
1235                                                          * we skip
1236                                                          * unspecifed
1237                                                          * addresses
1238                                                          */
1239                                                         continue;
1240                                                 }
1241                                                 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
1242                                                         if (local_scope == 0)
1243                                                                 continue;
1244                                                         if (sin6->sin6_scope_id == 0) {
1245                                                                 if (sa6_recoverscope(sin6) != 0)
1246                                                                         /*
1247                                                                          *
1248                                                                          * bad
1249                                                                          *
1250                                                                          * li
1251                                                                          * nk
1252                                                                          *
1253                                                                          * loc
1254                                                                          * al
1255                                                                          *
1256                                                                          * add
1257                                                                          * re
1258                                                                          * ss
1259                                                                          * */
1260                                                                         continue;
1261                                                         }
1262                                                 }
1263                                                 if ((site_scope == 0) &&
1264                                                     (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
1265                                                         continue;
1266                                                 }
1267                                                 memcpy(sas, sin6, sizeof(*sin6));
1268                                                 ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
1269                                                 sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(*sin6));
1270                                                 actual += sizeof(*sin6);
1271                                                 if (actual >= limit) {
1272                                                         return (actual);
1273                                                 }
1274                                         } else {
1275                                                 continue;
1276                                         }
1277                                         break;
1278 #endif
1279                                 default:
1280                                         /* TSNH */
1281                                         break;
1282                                 }
1283                         }
1284                 }
1285         } else {
1286                 struct sctp_laddr *laddr;
1287
1288                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1289                         if (stcb) {
1290                                 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
1291                                         continue;
1292                                 }
1293                         }
1294                         if (sctp_fill_user_address(sas, &laddr->ifa->address.sa))
1295                                 continue;
1296
1297                         ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
1298                         sas = (struct sockaddr_storage *)((caddr_t)sas +
1299                             laddr->ifa->address.sa.sa_len);
1300                         actual += laddr->ifa->address.sa.sa_len;
1301                         if (actual >= limit) {
1302                                 return (actual);
1303                         }
1304                 }
1305         }
1306         return (actual);
1307 }
1308
1309 static size_t
1310 sctp_fill_up_addresses(struct sctp_inpcb *inp,
1311     struct sctp_tcb *stcb,
1312     size_t limit,
1313     struct sockaddr_storage *sas)
1314 {
1315         size_t size = 0;
1316
1317         SCTP_IPI_ADDR_RLOCK();
1318         /* fill up addresses for the endpoint's default vrf */
1319         size = sctp_fill_up_addresses_vrf(inp, stcb, limit, sas,
1320             inp->def_vrf_id);
1321         SCTP_IPI_ADDR_RUNLOCK();
1322         return (size);
1323 }
1324
1325 /*
1326  * NOTE: assumes addr lock is held
1327  */
1328 static int
1329 sctp_count_max_addresses_vrf(struct sctp_inpcb *inp, uint32_t vrf_id)
1330 {
1331         int cnt = 0;
1332         struct sctp_vrf *vrf = NULL;
1333
1334         /*
1335          * In both sub-set bound an bound_all cases we return the MAXIMUM
1336          * number of addresses that you COULD get. In reality the sub-set
1337          * bound may have an exclusion list for a given TCB OR in the
1338          * bound-all case a TCB may NOT include the loopback or other
1339          * addresses as well.
1340          */
1341         vrf = sctp_find_vrf(vrf_id);
1342         if (vrf == NULL) {
1343                 return (0);
1344         }
1345         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1346                 struct sctp_ifn *sctp_ifn;
1347                 struct sctp_ifa *sctp_ifa;
1348
1349                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
1350                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
1351                                 /* Count them if they are the right type */
1352                                 if (sctp_ifa->address.sa.sa_family == AF_INET) {
1353                                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4))
1354                                                 cnt += sizeof(struct sockaddr_in6);
1355                                         else
1356                                                 cnt += sizeof(struct sockaddr_in);
1357
1358                                 } else if (sctp_ifa->address.sa.sa_family == AF_INET6)
1359                                         cnt += sizeof(struct sockaddr_in6);
1360                         }
1361                 }
1362         } else {
1363                 struct sctp_laddr *laddr;
1364
1365                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1366                         if (laddr->ifa->address.sa.sa_family == AF_INET) {
1367                                 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4))
1368                                         cnt += sizeof(struct sockaddr_in6);
1369                                 else
1370                                         cnt += sizeof(struct sockaddr_in);
1371
1372                         } else if (laddr->ifa->address.sa.sa_family == AF_INET6)
1373                                 cnt += sizeof(struct sockaddr_in6);
1374                 }
1375         }
1376         return (cnt);
1377 }
1378
1379 static int
1380 sctp_count_max_addresses(struct sctp_inpcb *inp)
1381 {
1382         int cnt = 0;
1383
1384         SCTP_IPI_ADDR_RLOCK();
1385         /* count addresses for the endpoint's default VRF */
1386         cnt = sctp_count_max_addresses_vrf(inp, inp->def_vrf_id);
1387         SCTP_IPI_ADDR_RUNLOCK();
1388         return (cnt);
1389 }
1390
1391 static int
1392 sctp_do_connect_x(struct socket *so, struct sctp_inpcb *inp, void *optval,
1393     size_t optsize, void *p, int delay)
1394 {
1395         int error = 0;
1396         int creat_lock_on = 0;
1397         struct sctp_tcb *stcb = NULL;
1398         struct sockaddr *sa;
1399         int num_v6 = 0, num_v4 = 0, *totaddrp, totaddr;
1400         int added = 0;
1401         uint32_t vrf_id;
1402         int bad_addresses = 0;
1403         sctp_assoc_t *a_id;
1404
1405         SCTPDBG(SCTP_DEBUG_PCB1, "Connectx called\n");
1406
1407         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
1408             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
1409                 /* We are already connected AND the TCP model */
1410                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
1411                 return (EADDRINUSE);
1412         }
1413         if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
1414             (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE))) {
1415                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1416                 return (EINVAL);
1417         }
1418         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
1419                 SCTP_INP_RLOCK(inp);
1420                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1421                 SCTP_INP_RUNLOCK(inp);
1422         }
1423         if (stcb) {
1424                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
1425                 return (EALREADY);
1426         }
1427         SCTP_INP_INCR_REF(inp);
1428         SCTP_ASOC_CREATE_LOCK(inp);
1429         creat_lock_on = 1;
1430         if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
1431             (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
1432                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EFAULT);
1433                 error = EFAULT;
1434                 goto out_now;
1435         }
1436         totaddrp = (int *)optval;
1437         totaddr = *totaddrp;
1438         sa = (struct sockaddr *)(totaddrp + 1);
1439         stcb = sctp_connectx_helper_find(inp, sa, &totaddr, &num_v4, &num_v6, &error, (optsize - sizeof(int)), &bad_addresses);
1440         if ((stcb != NULL) || bad_addresses) {
1441                 /* Already have or am bring up an association */
1442                 SCTP_ASOC_CREATE_UNLOCK(inp);
1443                 creat_lock_on = 0;
1444                 if (stcb)
1445                         SCTP_TCB_UNLOCK(stcb);
1446                 if (bad_addresses == 0) {
1447                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
1448                         error = EALREADY;
1449                 }
1450                 goto out_now;
1451         }
1452 #ifdef INET6
1453         if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) &&
1454             (num_v6 > 0)) {
1455                 error = EINVAL;
1456                 goto out_now;
1457         }
1458         if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1459             (num_v4 > 0)) {
1460                 struct in6pcb *inp6;
1461
1462                 inp6 = (struct in6pcb *)inp;
1463                 if (SCTP_IPV6_V6ONLY(inp6)) {
1464                         /*
1465                          * if IPV6_V6ONLY flag, ignore connections destined
1466                          * to a v4 addr or v4-mapped addr
1467                          */
1468                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1469                         error = EINVAL;
1470                         goto out_now;
1471                 }
1472         }
1473 #endif                          /* INET6 */
1474         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
1475             SCTP_PCB_FLAGS_UNBOUND) {
1476                 /* Bind a ephemeral port */
1477                 error = sctp_inpcb_bind(so, NULL, NULL, p);
1478                 if (error) {
1479                         goto out_now;
1480                 }
1481         }
1482         /* FIX ME: do we want to pass in a vrf on the connect call? */
1483         vrf_id = inp->def_vrf_id;
1484
1485
1486         /* We are GOOD to go */
1487         stcb = sctp_aloc_assoc(inp, sa, 1, &error, 0, vrf_id,
1488             (struct thread *)p
1489             );
1490         if (stcb == NULL) {
1491                 /* Gak! no memory */
1492                 goto out_now;
1493         }
1494         SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_COOKIE_WAIT);
1495         /* move to second address */
1496         if (sa->sa_family == AF_INET)
1497                 sa = (struct sockaddr *)((caddr_t)sa + sizeof(struct sockaddr_in));
1498         else
1499                 sa = (struct sockaddr *)((caddr_t)sa + sizeof(struct sockaddr_in6));
1500
1501         error = 0;
1502         added = sctp_connectx_helper_add(stcb, sa, (totaddr - 1), &error);
1503         /* Fill in the return id */
1504         if (error) {
1505                 (void)sctp_free_assoc(inp, stcb, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_12);
1506                 goto out_now;
1507         }
1508         a_id = (sctp_assoc_t *) optval;
1509         *a_id = sctp_get_associd(stcb);
1510
1511         /* initialize authentication parameters for the assoc */
1512         sctp_initialize_auth_params(inp, stcb);
1513
1514         if (delay) {
1515                 /* doing delayed connection */
1516                 stcb->asoc.delayed_connection = 1;
1517                 sctp_timer_start(SCTP_TIMER_TYPE_INIT, inp, stcb, stcb->asoc.primary_destination);
1518         } else {
1519                 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
1520                 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
1521         }
1522         SCTP_TCB_UNLOCK(stcb);
1523         if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
1524                 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
1525                 /* Set the connected flag so we can queue data */
1526                 soisconnecting(so);
1527         }
1528 out_now:
1529         if (creat_lock_on) {
1530                 SCTP_ASOC_CREATE_UNLOCK(inp);
1531         }
1532         SCTP_INP_DECR_REF(inp);
1533         return error;
1534 }
1535
1536 #define SCTP_FIND_STCB(inp, stcb, assoc_id) { \
1537         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||\
1538             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { \
1539                 SCTP_INP_RLOCK(inp); \
1540                 stcb = LIST_FIRST(&inp->sctp_asoc_list); \
1541                 if (stcb) { \
1542                         SCTP_TCB_LOCK(stcb); \
1543                 } \
1544                 SCTP_INP_RUNLOCK(inp); \
1545         } else if (assoc_id != 0) { \
1546                 stcb = sctp_findassociation_ep_asocid(inp, assoc_id, 1); \
1547                 if (stcb == NULL) { \
1548                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT); \
1549                         error = ENOENT; \
1550                         break; \
1551                 } \
1552         } else { \
1553                 stcb = NULL; \
1554         } \
1555   }
1556
1557
1558 #define SCTP_CHECK_AND_CAST(destp, srcp, type, size)  {\
1559         if (size < sizeof(type)) { \
1560                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); \
1561                 error = EINVAL; \
1562                 break; \
1563         } else { \
1564                 destp = (type *)srcp; \
1565         } \
1566       }
1567
1568 static int
1569 sctp_getopt(struct socket *so, int optname, void *optval, size_t *optsize,
1570     void *p)
1571 {
1572         struct sctp_inpcb *inp = NULL;
1573         int error, val = 0;
1574         struct sctp_tcb *stcb = NULL;
1575
1576         if (optval == NULL) {
1577                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1578                 return (EINVAL);
1579         }
1580         inp = (struct sctp_inpcb *)so->so_pcb;
1581         if (inp == 0) {
1582                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1583                 return EINVAL;
1584         }
1585         error = 0;
1586
1587         switch (optname) {
1588         case SCTP_NODELAY:
1589         case SCTP_AUTOCLOSE:
1590         case SCTP_EXPLICIT_EOR:
1591         case SCTP_AUTO_ASCONF:
1592         case SCTP_DISABLE_FRAGMENTS:
1593         case SCTP_I_WANT_MAPPED_V4_ADDR:
1594         case SCTP_USE_EXT_RCVINFO:
1595                 SCTP_INP_RLOCK(inp);
1596                 switch (optname) {
1597                 case SCTP_DISABLE_FRAGMENTS:
1598                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NO_FRAGMENT);
1599                         break;
1600                 case SCTP_I_WANT_MAPPED_V4_ADDR:
1601                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4);
1602                         break;
1603                 case SCTP_AUTO_ASCONF:
1604                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1605                                 /* only valid for bound all sockets */
1606                                 val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
1607                         } else {
1608                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1609                                 error = EINVAL;
1610                                 goto flags_out;
1611                         }
1612                         break;
1613                 case SCTP_EXPLICIT_EOR:
1614                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
1615                         break;
1616                 case SCTP_NODELAY:
1617                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NODELAY);
1618                         break;
1619                 case SCTP_USE_EXT_RCVINFO:
1620                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO);
1621                         break;
1622                 case SCTP_AUTOCLOSE:
1623                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTOCLOSE))
1624                                 val = TICKS_TO_SEC(inp->sctp_ep.auto_close_time);
1625                         else
1626                                 val = 0;
1627                         break;
1628
1629                 default:
1630                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
1631                         error = ENOPROTOOPT;
1632                 }               /* end switch (sopt->sopt_name) */
1633                 if (optname != SCTP_AUTOCLOSE) {
1634                         /* make it an "on/off" value */
1635                         val = (val != 0);
1636                 }
1637                 if (*optsize < sizeof(val)) {
1638                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1639                         error = EINVAL;
1640                 }
1641 flags_out:
1642                 SCTP_INP_RUNLOCK(inp);
1643                 if (error == 0) {
1644                         /* return the option value */
1645                         *(int *)optval = val;
1646                         *optsize = sizeof(val);
1647                 }
1648                 break;
1649         case SCTP_GET_PACKET_LOG:
1650                 {
1651 #ifdef  SCTP_PACKET_LOGGING
1652                         uint8_t *target;
1653                         int ret;
1654
1655                         SCTP_CHECK_AND_CAST(target, optval, uint8_t, *optsize);
1656                         ret = sctp_copy_out_packet_log(target, (int)*optsize);
1657                         *optsize = ret;
1658 #else
1659                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
1660                         error = EOPNOTSUPP;
1661 #endif
1662                         break;
1663                 }
1664         case SCTP_REUSE_PORT:
1665                 {
1666                         uint32_t *value;
1667
1668                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE)) {
1669                                 /* Can't do this for a 1-m socket */
1670                                 error = EINVAL;
1671                                 break;
1672                         }
1673                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1674                         *value = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE);
1675                         *optsize = sizeof(uint32_t);
1676                 }
1677                 break;
1678         case SCTP_PARTIAL_DELIVERY_POINT:
1679                 {
1680                         uint32_t *value;
1681
1682                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1683                         *value = inp->partial_delivery_point;
1684                         *optsize = sizeof(uint32_t);
1685                 }
1686                 break;
1687         case SCTP_FRAGMENT_INTERLEAVE:
1688                 {
1689                         uint32_t *value;
1690
1691                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1692                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) {
1693                                 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) {
1694                                         *value = SCTP_FRAG_LEVEL_2;
1695                                 } else {
1696                                         *value = SCTP_FRAG_LEVEL_1;
1697                                 }
1698                         } else {
1699                                 *value = SCTP_FRAG_LEVEL_0;
1700                         }
1701                         *optsize = sizeof(uint32_t);
1702                 }
1703                 break;
1704         case SCTP_CMT_ON_OFF:
1705                 {
1706                         struct sctp_assoc_value *av;
1707
1708                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1709                         if (SCTP_BASE_SYSCTL(sctp_cmt_on_off)) {
1710                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1711                                 if (stcb) {
1712                                         av->assoc_value = stcb->asoc.sctp_cmt_on_off;
1713                                         SCTP_TCB_UNLOCK(stcb);
1714
1715                                 } else {
1716                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
1717                                         error = ENOTCONN;
1718                                 }
1719                         } else {
1720                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
1721                                 error = ENOPROTOOPT;
1722                         }
1723                         *optsize = sizeof(*av);
1724                 }
1725                 break;
1726                 /* EY - set socket option for nr_sacks  */
1727         case SCTP_NR_SACK_ON_OFF:
1728                 {
1729                         struct sctp_assoc_value *av;
1730
1731                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1732                         if (SCTP_BASE_SYSCTL(sctp_nr_sack_on_off)) {
1733                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1734                                 if (stcb) {
1735                                         av->assoc_value = stcb->asoc.sctp_nr_sack_on_off;
1736                                         SCTP_TCB_UNLOCK(stcb);
1737
1738                                 } else {
1739                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
1740                                         error = ENOTCONN;
1741                                 }
1742                         } else {
1743                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
1744                                 error = ENOPROTOOPT;
1745                         }
1746                         *optsize = sizeof(*av);
1747                 }
1748                 break;
1749                 /* JRS - Get socket option for pluggable congestion control */
1750         case SCTP_PLUGGABLE_CC:
1751                 {
1752                         struct sctp_assoc_value *av;
1753
1754                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1755                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1756                         if (stcb) {
1757                                 av->assoc_value = stcb->asoc.congestion_control_module;
1758                                 SCTP_TCB_UNLOCK(stcb);
1759                         } else {
1760                                 av->assoc_value = inp->sctp_ep.sctp_default_cc_module;
1761                         }
1762                         *optsize = sizeof(*av);
1763                 }
1764                 break;
1765         case SCTP_GET_ADDR_LEN:
1766                 {
1767                         struct sctp_assoc_value *av;
1768
1769                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1770                         error = EINVAL;
1771 #ifdef INET
1772                         if (av->assoc_value == AF_INET) {
1773                                 av->assoc_value = sizeof(struct sockaddr_in);
1774                                 error = 0;
1775                         }
1776 #endif
1777 #ifdef INET6
1778                         if (av->assoc_value == AF_INET6) {
1779                                 av->assoc_value = sizeof(struct sockaddr_in6);
1780                                 error = 0;
1781                         }
1782 #endif
1783                         if (error) {
1784                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
1785                         }
1786                         *optsize = sizeof(*av);
1787                 }
1788                 break;
1789         case SCTP_GET_ASSOC_NUMBER:
1790                 {
1791                         uint32_t *value, cnt;
1792
1793                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1794                         cnt = 0;
1795                         SCTP_INP_RLOCK(inp);
1796                         LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
1797                                 cnt++;
1798                         }
1799                         SCTP_INP_RUNLOCK(inp);
1800                         *value = cnt;
1801                         *optsize = sizeof(uint32_t);
1802                 }
1803                 break;
1804
1805         case SCTP_GET_ASSOC_ID_LIST:
1806                 {
1807                         struct sctp_assoc_ids *ids;
1808                         unsigned int at, limit;
1809
1810                         SCTP_CHECK_AND_CAST(ids, optval, struct sctp_assoc_ids, *optsize);
1811                         at = 0;
1812                         limit = (*optsize - sizeof(uint32_t)) / sizeof(sctp_assoc_t);
1813                         SCTP_INP_RLOCK(inp);
1814                         LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
1815                                 if (at < limit) {
1816                                         ids->gaids_assoc_id[at++] = sctp_get_associd(stcb);
1817                                 } else {
1818                                         error = EINVAL;
1819                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
1820                                         break;
1821                                 }
1822                         }
1823                         SCTP_INP_RUNLOCK(inp);
1824                         ids->gaids_number_of_ids = at;
1825                         *optsize = ((at * sizeof(sctp_assoc_t)) + sizeof(uint32_t));
1826                 }
1827                 break;
1828         case SCTP_CONTEXT:
1829                 {
1830                         struct sctp_assoc_value *av;
1831
1832                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1833                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1834
1835                         if (stcb) {
1836                                 av->assoc_value = stcb->asoc.context;
1837                                 SCTP_TCB_UNLOCK(stcb);
1838                         } else {
1839                                 SCTP_INP_RLOCK(inp);
1840                                 av->assoc_value = inp->sctp_context;
1841                                 SCTP_INP_RUNLOCK(inp);
1842                         }
1843                         *optsize = sizeof(*av);
1844                 }
1845                 break;
1846         case SCTP_VRF_ID:
1847                 {
1848                         uint32_t *default_vrfid;
1849
1850                         SCTP_CHECK_AND_CAST(default_vrfid, optval, uint32_t, *optsize);
1851                         *default_vrfid = inp->def_vrf_id;
1852                         break;
1853                 }
1854         case SCTP_GET_ASOC_VRF:
1855                 {
1856                         struct sctp_assoc_value *id;
1857
1858                         SCTP_CHECK_AND_CAST(id, optval, struct sctp_assoc_value, *optsize);
1859                         SCTP_FIND_STCB(inp, stcb, id->assoc_id);
1860                         if (stcb == NULL) {
1861                                 error = EINVAL;
1862                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
1863                                 break;
1864                         }
1865                         id->assoc_value = stcb->asoc.vrf_id;
1866                         break;
1867                 }
1868         case SCTP_GET_VRF_IDS:
1869                 {
1870                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
1871                         error = EOPNOTSUPP;
1872                         break;
1873                 }
1874         case SCTP_GET_NONCE_VALUES:
1875                 {
1876                         struct sctp_get_nonce_values *gnv;
1877
1878                         SCTP_CHECK_AND_CAST(gnv, optval, struct sctp_get_nonce_values, *optsize);
1879                         SCTP_FIND_STCB(inp, stcb, gnv->gn_assoc_id);
1880
1881                         if (stcb) {
1882                                 gnv->gn_peers_tag = stcb->asoc.peer_vtag;
1883                                 gnv->gn_local_tag = stcb->asoc.my_vtag;
1884                                 SCTP_TCB_UNLOCK(stcb);
1885                         } else {
1886                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
1887                                 error = ENOTCONN;
1888                         }
1889                         *optsize = sizeof(*gnv);
1890                 }
1891                 break;
1892         case SCTP_DELAYED_SACK:
1893                 {
1894                         struct sctp_sack_info *sack;
1895
1896                         SCTP_CHECK_AND_CAST(sack, optval, struct sctp_sack_info, *optsize);
1897                         SCTP_FIND_STCB(inp, stcb, sack->sack_assoc_id);
1898                         if (stcb) {
1899                                 sack->sack_delay = stcb->asoc.delayed_ack;
1900                                 sack->sack_freq = stcb->asoc.sack_freq;
1901                                 SCTP_TCB_UNLOCK(stcb);
1902                         } else {
1903                                 SCTP_INP_RLOCK(inp);
1904                                 sack->sack_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
1905                                 sack->sack_freq = inp->sctp_ep.sctp_sack_freq;
1906                                 SCTP_INP_RUNLOCK(inp);
1907                         }
1908                         *optsize = sizeof(*sack);
1909                 }
1910                 break;
1911
1912         case SCTP_GET_SNDBUF_USE:
1913                 {
1914                         struct sctp_sockstat *ss;
1915
1916                         SCTP_CHECK_AND_CAST(ss, optval, struct sctp_sockstat, *optsize);
1917                         SCTP_FIND_STCB(inp, stcb, ss->ss_assoc_id);
1918
1919                         if (stcb) {
1920                                 ss->ss_total_sndbuf = stcb->asoc.total_output_queue_size;
1921                                 ss->ss_total_recv_buf = (stcb->asoc.size_on_reasm_queue +
1922                                     stcb->asoc.size_on_all_streams);
1923                                 SCTP_TCB_UNLOCK(stcb);
1924                         } else {
1925                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
1926                                 error = ENOTCONN;
1927                         }
1928                         *optsize = sizeof(struct sctp_sockstat);
1929                 }
1930                 break;
1931         case SCTP_MAX_BURST:
1932                 {
1933                         uint8_t *value;
1934
1935                         SCTP_CHECK_AND_CAST(value, optval, uint8_t, *optsize);
1936
1937                         SCTP_INP_RLOCK(inp);
1938                         *value = inp->sctp_ep.max_burst;
1939                         SCTP_INP_RUNLOCK(inp);
1940                         *optsize = sizeof(uint8_t);
1941                 }
1942                 break;
1943         case SCTP_MAXSEG:
1944                 {
1945                         struct sctp_assoc_value *av;
1946                         int ovh;
1947
1948                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1949                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1950
1951                         if (stcb) {
1952                                 av->assoc_value = sctp_get_frag_point(stcb, &stcb->asoc);
1953                                 SCTP_TCB_UNLOCK(stcb);
1954                         } else {
1955                                 SCTP_INP_RLOCK(inp);
1956                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1957                                         ovh = SCTP_MED_OVERHEAD;
1958                                 } else {
1959                                         ovh = SCTP_MED_V4_OVERHEAD;
1960                                 }
1961                                 if (inp->sctp_frag_point >= SCTP_DEFAULT_MAXSEGMENT)
1962                                         av->assoc_value = 0;
1963                                 else
1964                                         av->assoc_value = inp->sctp_frag_point - ovh;
1965                                 SCTP_INP_RUNLOCK(inp);
1966                         }
1967                         *optsize = sizeof(struct sctp_assoc_value);
1968                 }
1969                 break;
1970         case SCTP_GET_STAT_LOG:
1971                 error = sctp_fill_stat_log(optval, optsize);
1972                 break;
1973         case SCTP_EVENTS:
1974                 {
1975                         struct sctp_event_subscribe *events;
1976
1977                         SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, *optsize);
1978                         memset(events, 0, sizeof(*events));
1979                         SCTP_INP_RLOCK(inp);
1980                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT))
1981                                 events->sctp_data_io_event = 1;
1982
1983                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT))
1984                                 events->sctp_association_event = 1;
1985
1986                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT))
1987                                 events->sctp_address_event = 1;
1988
1989                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT))
1990                                 events->sctp_send_failure_event = 1;
1991
1992                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR))
1993                                 events->sctp_peer_error_event = 1;
1994
1995                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT))
1996                                 events->sctp_shutdown_event = 1;
1997
1998                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT))
1999                                 events->sctp_partial_delivery_event = 1;
2000
2001                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT))
2002                                 events->sctp_adaptation_layer_event = 1;
2003
2004                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT))
2005                                 events->sctp_authentication_event = 1;
2006
2007                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_DRYEVNT))
2008                                 events->sctp_sender_dry_event = 1;
2009
2010                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT))
2011                                 events->sctp_stream_reset_events = 1;
2012                         SCTP_INP_RUNLOCK(inp);
2013                         *optsize = sizeof(struct sctp_event_subscribe);
2014                 }
2015                 break;
2016
2017         case SCTP_ADAPTATION_LAYER:
2018                 {
2019                         uint32_t *value;
2020
2021                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
2022
2023                         SCTP_INP_RLOCK(inp);
2024                         *value = inp->sctp_ep.adaptation_layer_indicator;
2025                         SCTP_INP_RUNLOCK(inp);
2026                         *optsize = sizeof(uint32_t);
2027                 }
2028                 break;
2029         case SCTP_SET_INITIAL_DBG_SEQ:
2030                 {
2031                         uint32_t *value;
2032
2033                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
2034                         SCTP_INP_RLOCK(inp);
2035                         *value = inp->sctp_ep.initial_sequence_debug;
2036                         SCTP_INP_RUNLOCK(inp);
2037                         *optsize = sizeof(uint32_t);
2038                 }
2039                 break;
2040         case SCTP_GET_LOCAL_ADDR_SIZE:
2041                 {
2042                         uint32_t *value;
2043
2044                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
2045                         SCTP_INP_RLOCK(inp);
2046                         *value = sctp_count_max_addresses(inp);
2047                         SCTP_INP_RUNLOCK(inp);
2048                         *optsize = sizeof(uint32_t);
2049                 }
2050                 break;
2051         case SCTP_GET_REMOTE_ADDR_SIZE:
2052                 {
2053                         uint32_t *value;
2054                         size_t size;
2055                         struct sctp_nets *net;
2056
2057                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
2058                         /* FIXME MT: change to sctp_assoc_value? */
2059                         SCTP_FIND_STCB(inp, stcb, (sctp_assoc_t) * value);
2060
2061                         if (stcb) {
2062                                 size = 0;
2063                                 /* Count the sizes */
2064                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2065                                         if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) ||
2066                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) {
2067                                                 size += sizeof(struct sockaddr_in6);
2068                                         } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) {
2069                                                 size += sizeof(struct sockaddr_in);
2070                                         } else {
2071                                                 /* huh */
2072                                                 break;
2073                                         }
2074                                 }
2075                                 SCTP_TCB_UNLOCK(stcb);
2076                                 *value = (uint32_t) size;
2077                         } else {
2078                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
2079                                 error = ENOTCONN;
2080                         }
2081                         *optsize = sizeof(uint32_t);
2082                 }
2083                 break;
2084         case SCTP_GET_PEER_ADDRESSES:
2085                 /*
2086                  * Get the address information, an array is passed in to
2087                  * fill up we pack it.
2088                  */
2089                 {
2090                         size_t cpsz, left;
2091                         struct sockaddr_storage *sas;
2092                         struct sctp_nets *net;
2093                         struct sctp_getaddresses *saddr;
2094
2095                         SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize);
2096                         SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id);
2097
2098                         if (stcb) {
2099                                 left = (*optsize) - sizeof(struct sctp_getaddresses);
2100                                 *optsize = sizeof(struct sctp_getaddresses);
2101                                 sas = (struct sockaddr_storage *)&saddr->addr[0];
2102
2103                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2104                                         if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) ||
2105                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) {
2106                                                 cpsz = sizeof(struct sockaddr_in6);
2107                                         } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) {
2108                                                 cpsz = sizeof(struct sockaddr_in);
2109                                         } else {
2110                                                 /* huh */
2111                                                 break;
2112                                         }
2113                                         if (left < cpsz) {
2114                                                 /* not enough room. */
2115                                                 break;
2116                                         }
2117 #ifdef INET6
2118                                         if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) &&
2119                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET)) {
2120                                                 /* Must map the address */
2121                                                 in6_sin_2_v4mapsin6((struct sockaddr_in *)&net->ro._l_addr,
2122                                                     (struct sockaddr_in6 *)sas);
2123                                         } else {
2124 #endif
2125                                                 memcpy(sas, &net->ro._l_addr, cpsz);
2126 #ifdef INET6
2127                                         }
2128 #endif
2129                                         ((struct sockaddr_in *)sas)->sin_port = stcb->rport;
2130
2131                                         sas = (struct sockaddr_storage *)((caddr_t)sas + cpsz);
2132                                         left -= cpsz;
2133                                         *optsize += cpsz;
2134                                 }
2135                                 SCTP_TCB_UNLOCK(stcb);
2136                         } else {
2137                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
2138                                 error = ENOENT;
2139                         }
2140                 }
2141                 break;
2142         case SCTP_GET_LOCAL_ADDRESSES:
2143                 {
2144                         size_t limit, actual;
2145                         struct sockaddr_storage *sas;
2146                         struct sctp_getaddresses *saddr;
2147
2148                         SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize);
2149                         SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id);
2150
2151                         sas = (struct sockaddr_storage *)&saddr->addr[0];
2152                         limit = *optsize - sizeof(sctp_assoc_t);
2153                         actual = sctp_fill_up_addresses(inp, stcb, limit, sas);
2154                         if (stcb) {
2155                                 SCTP_TCB_UNLOCK(stcb);
2156                         }
2157                         *optsize = sizeof(struct sockaddr_storage) + actual;
2158                 }
2159                 break;
2160         case SCTP_PEER_ADDR_PARAMS:
2161                 {
2162                         struct sctp_paddrparams *paddrp;
2163                         struct sctp_nets *net;
2164
2165                         SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, *optsize);
2166                         SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id);
2167
2168                         net = NULL;
2169                         if (stcb) {
2170                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address);
2171                         } else {
2172                                 /*
2173                                  * We increment here since
2174                                  * sctp_findassociation_ep_addr() wil do a
2175                                  * decrement if it finds the stcb as long as
2176                                  * the locked tcb (last argument) is NOT a
2177                                  * TCB.. aka NULL.
2178                                  */
2179                                 SCTP_INP_INCR_REF(inp);
2180                                 stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddrp->spp_address, &net, NULL, NULL);
2181                                 if (stcb == NULL) {
2182                                         SCTP_INP_DECR_REF(inp);
2183                                 }
2184                         }
2185                         if (stcb && (net == NULL)) {
2186                                 struct sockaddr *sa;
2187
2188                                 sa = (struct sockaddr *)&paddrp->spp_address;
2189                                 if (sa->sa_family == AF_INET) {
2190                                         struct sockaddr_in *sin;
2191
2192                                         sin = (struct sockaddr_in *)sa;
2193                                         if (sin->sin_addr.s_addr) {
2194                                                 error = EINVAL;
2195                                                 SCTP_TCB_UNLOCK(stcb);
2196                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2197                                                 break;
2198                                         }
2199                                 } else if (sa->sa_family == AF_INET6) {
2200                                         struct sockaddr_in6 *sin6;
2201
2202                                         sin6 = (struct sockaddr_in6 *)sa;
2203                                         if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2204                                                 error = EINVAL;
2205                                                 SCTP_TCB_UNLOCK(stcb);
2206                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2207                                                 break;
2208                                         }
2209                                 } else {
2210                                         error = EAFNOSUPPORT;
2211                                         SCTP_TCB_UNLOCK(stcb);
2212                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2213                                         break;
2214                                 }
2215                         }
2216                         if (stcb) {
2217                                 /* Applys to the specific association */
2218                                 paddrp->spp_flags = 0;
2219                                 if (net) {
2220                                         int ovh;
2221
2222                                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2223                                                 ovh = SCTP_MED_OVERHEAD;
2224                                         } else {
2225                                                 ovh = SCTP_MED_V4_OVERHEAD;
2226                                         }
2227
2228
2229                                         paddrp->spp_pathmaxrxt = net->failure_threshold;
2230                                         paddrp->spp_pathmtu = net->mtu - ovh;
2231                                         /* get flags for HB */
2232                                         if (net->dest_state & SCTP_ADDR_NOHB)
2233                                                 paddrp->spp_flags |= SPP_HB_DISABLE;
2234                                         else
2235                                                 paddrp->spp_flags |= SPP_HB_ENABLE;
2236                                         /* get flags for PMTU */
2237                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
2238                                                 paddrp->spp_flags |= SPP_PMTUD_ENABLE;
2239                                         } else {
2240                                                 paddrp->spp_flags |= SPP_PMTUD_DISABLE;
2241                                         }
2242 #ifdef INET
2243                                         if (net->ro._l_addr.sin.sin_family == AF_INET) {
2244                                                 paddrp->spp_ipv4_tos = net->tos_flowlabel & 0x000000fc;
2245                                                 paddrp->spp_flags |= SPP_IPV4_TOS;
2246                                         }
2247 #endif
2248 #ifdef INET6
2249                                         if (net->ro._l_addr.sin6.sin6_family == AF_INET6) {
2250                                                 paddrp->spp_ipv6_flowlabel = net->tos_flowlabel;
2251                                                 paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
2252                                         }
2253 #endif
2254                                 } else {
2255                                         /*
2256                                          * No destination so return default
2257                                          * value
2258                                          */
2259                                         int cnt = 0;
2260
2261                                         paddrp->spp_pathmaxrxt = stcb->asoc.def_net_failure;
2262                                         paddrp->spp_pathmtu = sctp_get_frag_point(stcb, &stcb->asoc);
2263 #ifdef INET
2264                                         paddrp->spp_ipv4_tos = stcb->asoc.default_tos & 0x000000fc;
2265                                         paddrp->spp_flags |= SPP_IPV4_TOS;
2266 #endif
2267 #ifdef INET6
2268                                         paddrp->spp_ipv6_flowlabel = stcb->asoc.default_flowlabel;
2269                                         paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
2270 #endif
2271                                         /* default settings should be these */
2272                                         if (stcb->asoc.hb_is_disabled == 0) {
2273                                                 paddrp->spp_flags |= SPP_HB_ENABLE;
2274                                         } else {
2275                                                 paddrp->spp_flags |= SPP_HB_DISABLE;
2276                                         }
2277                                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2278                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
2279                                                         cnt++;
2280                                                 }
2281                                         }
2282                                         if (cnt) {
2283                                                 paddrp->spp_flags |= SPP_PMTUD_ENABLE;
2284                                         }
2285                                 }
2286                                 paddrp->spp_hbinterval = stcb->asoc.heart_beat_delay;
2287                                 paddrp->spp_assoc_id = sctp_get_associd(stcb);
2288                                 SCTP_TCB_UNLOCK(stcb);
2289                         } else {
2290                                 /* Use endpoint defaults */
2291                                 SCTP_INP_RLOCK(inp);
2292                                 paddrp->spp_pathmaxrxt = inp->sctp_ep.def_net_failure;
2293                                 paddrp->spp_hbinterval = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
2294                                 paddrp->spp_assoc_id = (sctp_assoc_t) 0;
2295                                 /* get inp's default */
2296 #ifdef INET
2297                                 paddrp->spp_ipv4_tos = inp->ip_inp.inp.inp_ip_tos;
2298                                 paddrp->spp_flags |= SPP_IPV4_TOS;
2299 #endif
2300 #ifdef INET6
2301                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2302                                         paddrp->spp_ipv6_flowlabel = ((struct in6pcb *)inp)->in6p_flowinfo;
2303                                         paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
2304                                 }
2305 #endif
2306                                 /* can't return this */
2307                                 paddrp->spp_pathmtu = 0;
2308
2309                                 /* default behavior, no stcb */
2310                                 paddrp->spp_flags = SPP_PMTUD_ENABLE;
2311
2312                                 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
2313                                         paddrp->spp_flags |= SPP_HB_ENABLE;
2314                                 } else {
2315                                         paddrp->spp_flags |= SPP_HB_DISABLE;
2316                                 }
2317                                 SCTP_INP_RUNLOCK(inp);
2318                         }
2319                         *optsize = sizeof(struct sctp_paddrparams);
2320                 }
2321                 break;
2322         case SCTP_GET_PEER_ADDR_INFO:
2323                 {
2324                         struct sctp_paddrinfo *paddri;
2325                         struct sctp_nets *net;
2326
2327                         SCTP_CHECK_AND_CAST(paddri, optval, struct sctp_paddrinfo, *optsize);
2328                         SCTP_FIND_STCB(inp, stcb, paddri->spinfo_assoc_id);
2329
2330                         net = NULL;
2331                         if (stcb) {
2332                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddri->spinfo_address);
2333                         } else {
2334                                 /*
2335                                  * We increment here since
2336                                  * sctp_findassociation_ep_addr() wil do a
2337                                  * decrement if it finds the stcb as long as
2338                                  * the locked tcb (last argument) is NOT a
2339                                  * TCB.. aka NULL.
2340                                  */
2341                                 SCTP_INP_INCR_REF(inp);
2342                                 stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddri->spinfo_address, &net, NULL, NULL);
2343                                 if (stcb == NULL) {
2344                                         SCTP_INP_DECR_REF(inp);
2345                                 }
2346                         }
2347
2348                         if ((stcb) && (net)) {
2349                                 paddri->spinfo_state = net->dest_state & (SCTP_REACHABLE_MASK | SCTP_ADDR_NOHB);
2350                                 paddri->spinfo_cwnd = net->cwnd;
2351                                 paddri->spinfo_srtt = ((net->lastsa >> 2) + net->lastsv) >> 1;
2352                                 paddri->spinfo_rto = net->RTO;
2353                                 paddri->spinfo_assoc_id = sctp_get_associd(stcb);
2354                                 SCTP_TCB_UNLOCK(stcb);
2355                         } else {
2356                                 if (stcb) {
2357                                         SCTP_TCB_UNLOCK(stcb);
2358                                 }
2359                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
2360                                 error = ENOENT;
2361                         }
2362                         *optsize = sizeof(struct sctp_paddrinfo);
2363                 }
2364                 break;
2365         case SCTP_PCB_STATUS:
2366                 {
2367                         struct sctp_pcbinfo *spcb;
2368
2369                         SCTP_CHECK_AND_CAST(spcb, optval, struct sctp_pcbinfo, *optsize);
2370                         sctp_fill_pcbinfo(spcb);
2371                         *optsize = sizeof(struct sctp_pcbinfo);
2372                 }
2373                 break;
2374
2375         case SCTP_STATUS:
2376                 {
2377                         struct sctp_nets *net;
2378                         struct sctp_status *sstat;
2379
2380                         SCTP_CHECK_AND_CAST(sstat, optval, struct sctp_status, *optsize);
2381                         SCTP_FIND_STCB(inp, stcb, sstat->sstat_assoc_id);
2382
2383                         if (stcb == NULL) {
2384                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2385                                 error = EINVAL;
2386                                 break;
2387                         }
2388                         /*
2389                          * I think passing the state is fine since
2390                          * sctp_constants.h will be available to the user
2391                          * land.
2392                          */
2393                         sstat->sstat_state = stcb->asoc.state;
2394                         sstat->sstat_assoc_id = sctp_get_associd(stcb);
2395                         sstat->sstat_rwnd = stcb->asoc.peers_rwnd;
2396                         sstat->sstat_unackdata = stcb->asoc.sent_queue_cnt;
2397                         /*
2398                          * We can't include chunks that have been passed to
2399                          * the socket layer. Only things in queue.
2400                          */
2401                         sstat->sstat_penddata = (stcb->asoc.cnt_on_reasm_queue +
2402                             stcb->asoc.cnt_on_all_streams);
2403
2404
2405                         sstat->sstat_instrms = stcb->asoc.streamincnt;
2406                         sstat->sstat_outstrms = stcb->asoc.streamoutcnt;
2407                         sstat->sstat_fragmentation_point = sctp_get_frag_point(stcb, &stcb->asoc);
2408                         memcpy(&sstat->sstat_primary.spinfo_address,
2409                             &stcb->asoc.primary_destination->ro._l_addr,
2410                             ((struct sockaddr *)(&stcb->asoc.primary_destination->ro._l_addr))->sa_len);
2411                         net = stcb->asoc.primary_destination;
2412                         ((struct sockaddr_in *)&sstat->sstat_primary.spinfo_address)->sin_port = stcb->rport;
2413                         /*
2414                          * Again the user can get info from sctp_constants.h
2415                          * for what the state of the network is.
2416                          */
2417                         sstat->sstat_primary.spinfo_state = net->dest_state & SCTP_REACHABLE_MASK;
2418                         sstat->sstat_primary.spinfo_cwnd = net->cwnd;
2419                         sstat->sstat_primary.spinfo_srtt = net->lastsa;
2420                         sstat->sstat_primary.spinfo_rto = net->RTO;
2421                         sstat->sstat_primary.spinfo_mtu = net->mtu;
2422                         sstat->sstat_primary.spinfo_assoc_id = sctp_get_associd(stcb);
2423                         SCTP_TCB_UNLOCK(stcb);
2424                         *optsize = sizeof(*sstat);
2425                 }
2426                 break;
2427         case SCTP_RTOINFO:
2428                 {
2429                         struct sctp_rtoinfo *srto;
2430
2431                         SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, *optsize);
2432                         SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id);
2433
2434                         if (stcb) {
2435                                 srto->srto_initial = stcb->asoc.initial_rto;
2436                                 srto->srto_max = stcb->asoc.maxrto;
2437                                 srto->srto_min = stcb->asoc.minrto;
2438                                 SCTP_TCB_UNLOCK(stcb);
2439                         } else {
2440                                 SCTP_INP_RLOCK(inp);
2441                                 srto->srto_initial = inp->sctp_ep.initial_rto;
2442                                 srto->srto_max = inp->sctp_ep.sctp_maxrto;
2443                                 srto->srto_min = inp->sctp_ep.sctp_minrto;
2444                                 SCTP_INP_RUNLOCK(inp);
2445                         }
2446                         *optsize = sizeof(*srto);
2447                 }
2448                 break;
2449         case SCTP_ASSOCINFO:
2450                 {
2451                         struct sctp_assocparams *sasoc;
2452                         uint32_t oldval;
2453
2454                         SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, *optsize);
2455                         SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id);
2456
2457                         if (stcb) {
2458                                 oldval = sasoc->sasoc_cookie_life;
2459                                 sasoc->sasoc_cookie_life = TICKS_TO_MSEC(stcb->asoc.cookie_life);
2460                                 sasoc->sasoc_asocmaxrxt = stcb->asoc.max_send_times;
2461                                 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets;
2462                                 sasoc->sasoc_peer_rwnd = stcb->asoc.peers_rwnd;
2463                                 sasoc->sasoc_local_rwnd = stcb->asoc.my_rwnd;
2464                                 SCTP_TCB_UNLOCK(stcb);
2465                         } else {
2466                                 SCTP_INP_RLOCK(inp);
2467                                 sasoc->sasoc_cookie_life = TICKS_TO_MSEC(inp->sctp_ep.def_cookie_life);
2468                                 sasoc->sasoc_asocmaxrxt = inp->sctp_ep.max_send_times;
2469                                 sasoc->sasoc_number_peer_destinations = 0;
2470                                 sasoc->sasoc_peer_rwnd = 0;
2471                                 sasoc->sasoc_local_rwnd = sbspace(&inp->sctp_socket->so_rcv);
2472                                 SCTP_INP_RUNLOCK(inp);
2473                         }
2474                         *optsize = sizeof(*sasoc);
2475                 }
2476                 break;
2477         case SCTP_DEFAULT_SEND_PARAM:
2478                 {
2479                         struct sctp_sndrcvinfo *s_info;
2480
2481                         SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, *optsize);
2482                         SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id);
2483
2484                         if (stcb) {
2485                                 memcpy(s_info, &stcb->asoc.def_send, sizeof(stcb->asoc.def_send));
2486                                 SCTP_TCB_UNLOCK(stcb);
2487                         } else {
2488                                 SCTP_INP_RLOCK(inp);
2489                                 memcpy(s_info, &inp->def_send, sizeof(inp->def_send));
2490                                 SCTP_INP_RUNLOCK(inp);
2491                         }
2492                         *optsize = sizeof(*s_info);
2493                 }
2494                 break;
2495         case SCTP_INITMSG:
2496                 {
2497                         struct sctp_initmsg *sinit;
2498
2499                         SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, *optsize);
2500                         SCTP_INP_RLOCK(inp);
2501                         sinit->sinit_num_ostreams = inp->sctp_ep.pre_open_stream_count;
2502                         sinit->sinit_max_instreams = inp->sctp_ep.max_open_streams_intome;
2503                         sinit->sinit_max_attempts = inp->sctp_ep.max_init_times;
2504                         sinit->sinit_max_init_timeo = inp->sctp_ep.initial_init_rto_max;
2505                         SCTP_INP_RUNLOCK(inp);
2506                         *optsize = sizeof(*sinit);
2507                 }
2508                 break;
2509         case SCTP_PRIMARY_ADDR:
2510                 /* we allow a "get" operation on this */
2511                 {
2512                         struct sctp_setprim *ssp;
2513
2514                         SCTP_CHECK_AND_CAST(ssp, optval, struct sctp_setprim, *optsize);
2515                         SCTP_FIND_STCB(inp, stcb, ssp->ssp_assoc_id);
2516
2517                         if (stcb) {
2518                                 /* simply copy out the sockaddr_storage... */
2519                                 int len;
2520
2521                                 len = *optsize;
2522                                 if (len > stcb->asoc.primary_destination->ro._l_addr.sa.sa_len)
2523                                         len = stcb->asoc.primary_destination->ro._l_addr.sa.sa_len;
2524
2525                                 memcpy(&ssp->ssp_addr,
2526                                     &stcb->asoc.primary_destination->ro._l_addr,
2527                                     len);
2528                                 SCTP_TCB_UNLOCK(stcb);
2529                         } else {
2530                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2531                                 error = EINVAL;
2532                         }
2533                         *optsize = sizeof(*ssp);
2534                 }
2535                 break;
2536
2537         case SCTP_HMAC_IDENT:
2538                 {
2539                         struct sctp_hmacalgo *shmac;
2540                         sctp_hmaclist_t *hmaclist;
2541                         uint32_t size;
2542                         int i;
2543
2544                         SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, *optsize);
2545
2546                         SCTP_INP_RLOCK(inp);
2547                         hmaclist = inp->sctp_ep.local_hmacs;
2548                         if (hmaclist == NULL) {
2549                                 /* no HMACs to return */
2550                                 *optsize = sizeof(*shmac);
2551                                 SCTP_INP_RUNLOCK(inp);
2552                                 break;
2553                         }
2554                         /* is there room for all of the hmac ids? */
2555                         size = sizeof(*shmac) + (hmaclist->num_algo *
2556                             sizeof(shmac->shmac_idents[0]));
2557                         if ((size_t)(*optsize) < size) {
2558                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2559                                 error = EINVAL;
2560                                 SCTP_INP_RUNLOCK(inp);
2561                                 break;
2562                         }
2563                         /* copy in the list */
2564                         shmac->shmac_number_of_idents = hmaclist->num_algo;
2565                         for (i = 0; i < hmaclist->num_algo; i++) {
2566                                 shmac->shmac_idents[i] = hmaclist->hmac[i];
2567                         }
2568                         SCTP_INP_RUNLOCK(inp);
2569                         *optsize = size;
2570                         break;
2571                 }
2572         case SCTP_AUTH_ACTIVE_KEY:
2573                 {
2574                         struct sctp_authkeyid *scact;
2575
2576                         SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, *optsize);
2577                         SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id);
2578
2579                         if (stcb) {
2580                                 /* get the active key on the assoc */
2581                                 scact->scact_keynumber = stcb->asoc.authinfo.active_keyid;
2582                                 SCTP_TCB_UNLOCK(stcb);
2583                         } else {
2584                                 /* get the endpoint active key */
2585                                 SCTP_INP_RLOCK(inp);
2586                                 scact->scact_keynumber = inp->sctp_ep.default_keyid;
2587                                 SCTP_INP_RUNLOCK(inp);
2588                         }
2589                         *optsize = sizeof(*scact);
2590                         break;
2591                 }
2592         case SCTP_LOCAL_AUTH_CHUNKS:
2593                 {
2594                         struct sctp_authchunks *sac;
2595                         sctp_auth_chklist_t *chklist = NULL;
2596                         size_t size = 0;
2597
2598                         SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize);
2599                         SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id);
2600
2601                         if (stcb) {
2602                                 /* get off the assoc */
2603                                 chklist = stcb->asoc.local_auth_chunks;
2604                                 /* is there enough space? */
2605                                 size = sctp_auth_get_chklist_size(chklist);
2606                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2607                                         error = EINVAL;
2608                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2609                                 } else {
2610                                         /* copy in the chunks */
2611                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2612                                 }
2613                                 SCTP_TCB_UNLOCK(stcb);
2614                         } else {
2615                                 /* get off the endpoint */
2616                                 SCTP_INP_RLOCK(inp);
2617                                 chklist = inp->sctp_ep.local_auth_chunks;
2618                                 /* is there enough space? */
2619                                 size = sctp_auth_get_chklist_size(chklist);
2620                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2621                                         error = EINVAL;
2622                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2623                                 } else {
2624                                         /* copy in the chunks */
2625                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2626                                 }
2627                                 SCTP_INP_RUNLOCK(inp);
2628                         }
2629                         *optsize = sizeof(struct sctp_authchunks) + size;
2630                         break;
2631                 }
2632         case SCTP_PEER_AUTH_CHUNKS:
2633                 {
2634                         struct sctp_authchunks *sac;
2635                         sctp_auth_chklist_t *chklist = NULL;
2636                         size_t size = 0;
2637
2638                         SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize);
2639                         SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id);
2640
2641                         if (stcb) {
2642                                 /* get off the assoc */
2643                                 chklist = stcb->asoc.peer_auth_chunks;
2644                                 /* is there enough space? */
2645                                 size = sctp_auth_get_chklist_size(chklist);
2646                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2647                                         error = EINVAL;
2648                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2649                                 } else {
2650                                         /* copy in the chunks */
2651                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2652                                 }
2653                                 SCTP_TCB_UNLOCK(stcb);
2654                         } else {
2655                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
2656                                 error = ENOENT;
2657                         }
2658                         *optsize = sizeof(struct sctp_authchunks) + size;
2659                         break;
2660                 }
2661
2662
2663         default:
2664                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
2665                 error = ENOPROTOOPT;
2666                 *optsize = 0;
2667                 break;
2668         }                       /* end switch (sopt->sopt_name) */
2669         return (error);
2670 }
2671
2672 static int
2673 sctp_setopt(struct socket *so, int optname, void *optval, size_t optsize,
2674     void *p)
2675 {
2676         int error, set_opt;
2677         uint32_t *mopt;
2678         struct sctp_tcb *stcb = NULL;
2679         struct sctp_inpcb *inp = NULL;
2680         uint32_t vrf_id;
2681
2682         if (optval == NULL) {
2683                 SCTP_PRINTF("optval is NULL\n");
2684                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2685                 return (EINVAL);
2686         }
2687         inp = (struct sctp_inpcb *)so->so_pcb;
2688         if (inp == 0) {
2689                 SCTP_PRINTF("inp is NULL?\n");
2690                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2691                 return EINVAL;
2692         }
2693         vrf_id = inp->def_vrf_id;
2694
2695         error = 0;
2696         switch (optname) {
2697         case SCTP_NODELAY:
2698         case SCTP_AUTOCLOSE:
2699         case SCTP_AUTO_ASCONF:
2700         case SCTP_EXPLICIT_EOR:
2701         case SCTP_DISABLE_FRAGMENTS:
2702         case SCTP_USE_EXT_RCVINFO:
2703         case SCTP_I_WANT_MAPPED_V4_ADDR:
2704                 /* copy in the option value */
2705                 SCTP_CHECK_AND_CAST(mopt, optval, uint32_t, optsize);
2706                 set_opt = 0;
2707                 if (error)
2708                         break;
2709                 switch (optname) {
2710                 case SCTP_DISABLE_FRAGMENTS:
2711                         set_opt = SCTP_PCB_FLAGS_NO_FRAGMENT;
2712                         break;
2713                 case SCTP_AUTO_ASCONF:
2714                         /*
2715                          * NOTE: we don't really support this flag
2716                          */
2717                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
2718                                 /* only valid for bound all sockets */
2719                                 set_opt = SCTP_PCB_FLAGS_AUTO_ASCONF;
2720                         } else {
2721                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2722                                 return (EINVAL);
2723                         }
2724                         break;
2725                 case SCTP_EXPLICIT_EOR:
2726                         set_opt = SCTP_PCB_FLAGS_EXPLICIT_EOR;
2727                         break;
2728                 case SCTP_USE_EXT_RCVINFO:
2729                         set_opt = SCTP_PCB_FLAGS_EXT_RCVINFO;
2730                         break;
2731                 case SCTP_I_WANT_MAPPED_V4_ADDR:
2732                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2733                                 set_opt = SCTP_PCB_FLAGS_NEEDS_MAPPED_V4;
2734                         } else {
2735                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2736                                 return (EINVAL);
2737                         }
2738                         break;
2739                 case SCTP_NODELAY:
2740                         set_opt = SCTP_PCB_FLAGS_NODELAY;
2741                         break;
2742                 case SCTP_AUTOCLOSE:
2743                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2744                             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
2745                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2746                                 return (EINVAL);
2747                         }
2748                         set_opt = SCTP_PCB_FLAGS_AUTOCLOSE;
2749                         /*
2750                          * The value is in ticks. Note this does not effect
2751                          * old associations, only new ones.
2752                          */
2753                         inp->sctp_ep.auto_close_time = SEC_TO_TICKS(*mopt);
2754                         break;
2755                 }
2756                 SCTP_INP_WLOCK(inp);
2757                 if (*mopt != 0) {
2758                         sctp_feature_on(inp, set_opt);
2759                 } else {
2760                         sctp_feature_off(inp, set_opt);
2761                 }
2762                 SCTP_INP_WUNLOCK(inp);
2763                 break;
2764         case SCTP_REUSE_PORT:
2765                 {
2766                         SCTP_CHECK_AND_CAST(mopt, optval, uint32_t, optsize);
2767                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
2768                                 /* Can't set it after we are bound */
2769                                 error = EINVAL;
2770                                 break;
2771                         }
2772                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE)) {
2773                                 /* Can't do this for a 1-m socket */
2774                                 error = EINVAL;
2775                                 break;
2776                         }
2777                         if (optval)
2778                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE);
2779                         else
2780                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE);
2781                 }
2782                 break;
2783         case SCTP_PARTIAL_DELIVERY_POINT:
2784                 {
2785                         uint32_t *value;
2786
2787                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, optsize);
2788                         if (*value > SCTP_SB_LIMIT_RCV(so)) {
2789                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2790                                 error = EINVAL;
2791                                 break;
2792                         }
2793                         inp->partial_delivery_point = *value;
2794                 }
2795                 break;
2796         case SCTP_FRAGMENT_INTERLEAVE:
2797                 /* not yet until we re-write sctp_recvmsg() */
2798                 {
2799                         uint32_t *level;
2800
2801                         SCTP_CHECK_AND_CAST(level, optval, uint32_t, optsize);
2802                         if (*level == SCTP_FRAG_LEVEL_2) {
2803                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2804                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2805                         } else if (*level == SCTP_FRAG_LEVEL_1) {
2806                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2807                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2808                         } else if (*level == SCTP_FRAG_LEVEL_0) {
2809                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2810                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2811
2812                         } else {
2813                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2814                                 error = EINVAL;
2815                         }
2816                 }
2817                 break;
2818         case SCTP_CMT_ON_OFF:
2819                 {
2820                         struct sctp_assoc_value *av;
2821
2822                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2823                         if (SCTP_BASE_SYSCTL(sctp_cmt_on_off)) {
2824                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2825                                 if (stcb) {
2826                                         stcb->asoc.sctp_cmt_on_off = (uint8_t) av->assoc_value;
2827                                         SCTP_TCB_UNLOCK(stcb);
2828                                 } else {
2829                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
2830                                         error = ENOTCONN;
2831                                 }
2832                         } else {
2833                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
2834                                 error = ENOPROTOOPT;
2835                         }
2836                 }
2837                 break;
2838                 /* EY nr_sack_on_off socket option */
2839         case SCTP_NR_SACK_ON_OFF:
2840                 {
2841                         struct sctp_assoc_value *av;
2842
2843                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2844                         if (SCTP_BASE_SYSCTL(sctp_nr_sack_on_off)) {
2845                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2846                                 if (stcb) {
2847                                         stcb->asoc.sctp_nr_sack_on_off = (uint8_t) av->assoc_value;
2848                                         SCTP_TCB_UNLOCK(stcb);
2849                                 } else {
2850                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
2851                                         error = ENOTCONN;
2852                                 }
2853                         } else {
2854                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
2855                                 error = ENOPROTOOPT;
2856                         }
2857                 }
2858                 break;
2859                 /* JRS - Set socket option for pluggable congestion control */
2860         case SCTP_PLUGGABLE_CC:
2861                 {
2862                         struct sctp_assoc_value *av;
2863
2864                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2865                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2866                         if (stcb) {
2867                                 switch (av->assoc_value) {
2868                                         /*
2869                                          * JRS - Standard TCP congestion
2870                                          * control
2871                                          */
2872                                 case SCTP_CC_RFC2581:
2873                                         {
2874                                                 stcb->asoc.congestion_control_module = SCTP_CC_RFC2581;
2875                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_set_initial_cc_param;
2876                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_cwnd_update_after_sack;
2877                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_cwnd_update_after_fr;
2878                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_cwnd_update_after_timeout;
2879                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_cwnd_update_after_ecn_echo;
2880                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
2881                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
2882                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_cwnd_update_after_fr_timer;
2883                                                 SCTP_TCB_UNLOCK(stcb);
2884                                                 break;
2885                                         }
2886                                         /*
2887                                          * JRS - High Speed TCP congestion
2888                                          * control (Floyd)
2889                                          */
2890                                 case SCTP_CC_HSTCP:
2891                                         {
2892                                                 stcb->asoc.congestion_control_module = SCTP_CC_HSTCP;
2893                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_set_initial_cc_param;
2894                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_hs_cwnd_update_after_sack;
2895                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_hs_cwnd_update_after_fr;
2896                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_cwnd_update_after_timeout;
2897                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_cwnd_update_after_ecn_echo;
2898                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
2899                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
2900                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_cwnd_update_after_fr_timer;
2901                                                 SCTP_TCB_UNLOCK(stcb);
2902                                                 break;
2903                                         }
2904                                         /* JRS - HTCP congestion control */
2905                                 case SCTP_CC_HTCP:
2906                                         {
2907                                                 stcb->asoc.congestion_control_module = SCTP_CC_HTCP;
2908                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_htcp_set_initial_cc_param;
2909                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_htcp_cwnd_update_after_sack;
2910                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_htcp_cwnd_update_after_fr;
2911                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_htcp_cwnd_update_after_timeout;
2912                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_htcp_cwnd_update_after_ecn_echo;
2913                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
2914                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
2915                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_htcp_cwnd_update_after_fr_timer;
2916                                                 SCTP_TCB_UNLOCK(stcb);
2917                                                 break;
2918                                         }
2919                                         /*
2920                                          * JRS - All other values are
2921                                          * invalid
2922                                          */
2923                                 default:
2924                                         {
2925                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2926                                                 error = EINVAL;
2927                                                 SCTP_TCB_UNLOCK(stcb);
2928                                                 break;
2929                                         }
2930                                 }
2931                         } else {
2932                                 switch (av->assoc_value) {
2933                                 case SCTP_CC_RFC2581:
2934                                 case SCTP_CC_HSTCP:
2935                                 case SCTP_CC_HTCP:
2936                                         inp->sctp_ep.sctp_default_cc_module = av->assoc_value;
2937                                         break;
2938                                 default:
2939                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2940                                         error = EINVAL;
2941                                         break;
2942                                 };
2943                         }
2944                 }
2945                 break;
2946         case SCTP_CLR_STAT_LOG:
2947                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
2948                 error = EOPNOTSUPP;
2949                 break;
2950         case SCTP_CONTEXT:
2951                 {
2952                         struct sctp_assoc_value *av;
2953
2954                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2955                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2956
2957                         if (stcb) {
2958                                 stcb->asoc.context = av->assoc_value;
2959                                 SCTP_TCB_UNLOCK(stcb);
2960                         } else {
2961                                 SCTP_INP_WLOCK(inp);
2962                                 inp->sctp_context = av->assoc_value;
2963                                 SCTP_INP_WUNLOCK(inp);
2964                         }
2965                 }
2966                 break;
2967         case SCTP_VRF_ID:
2968                 {
2969                         uint32_t *default_vrfid;
2970
2971                         SCTP_CHECK_AND_CAST(default_vrfid, optval, uint32_t, optsize);
2972                         if (*default_vrfid > SCTP_MAX_VRF_ID) {
2973                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2974                                 error = EINVAL;
2975                                 break;
2976                         }
2977                         inp->def_vrf_id = *default_vrfid;
2978                         break;
2979                 }
2980         case SCTP_DEL_VRF_ID:
2981                 {
2982                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
2983                         error = EOPNOTSUPP;
2984                         break;
2985                 }
2986         case SCTP_ADD_VRF_ID:
2987                 {
2988                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
2989                         error = EOPNOTSUPP;
2990                         break;
2991                 }
2992         case SCTP_DELAYED_SACK:
2993                 {
2994                         struct sctp_sack_info *sack;
2995
2996                         SCTP_CHECK_AND_CAST(sack, optval, struct sctp_sack_info, optsize);
2997                         SCTP_FIND_STCB(inp, stcb, sack->sack_assoc_id);
2998                         if (sack->sack_delay) {
2999                                 if (sack->sack_delay > SCTP_MAX_SACK_DELAY)
3000                                         sack->sack_delay = SCTP_MAX_SACK_DELAY;
3001                         }
3002                         if (stcb) {
3003                                 if (sack->sack_delay) {
3004                                         if (MSEC_TO_TICKS(sack->sack_delay) < 1) {
3005                                                 sack->sack_delay = TICKS_TO_MSEC(1);
3006                                         }
3007                                         stcb->asoc.delayed_ack = sack->sack_delay;
3008                                 }
3009                                 if (sack->sack_freq) {
3010                                         stcb->asoc.sack_freq = sack->sack_freq;
3011                                 }
3012                                 SCTP_TCB_UNLOCK(stcb);
3013                         } else {
3014                                 SCTP_INP_WLOCK(inp);
3015                                 if (sack->sack_delay) {
3016                                         if (MSEC_TO_TICKS(sack->sack_delay) < 1) {
3017                                                 sack->sack_delay = TICKS_TO_MSEC(1);
3018                                         }
3019                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(sack->sack_delay);
3020                                 }
3021                                 if (sack->sack_freq) {
3022                                         inp->sctp_ep.sctp_sack_freq = sack->sack_freq;
3023                                 }
3024                                 SCTP_INP_WUNLOCK(inp);
3025                         }
3026                         break;
3027                 }
3028         case SCTP_AUTH_CHUNK:
3029                 {
3030                         struct sctp_authchunk *sauth;
3031
3032                         SCTP_CHECK_AND_CAST(sauth, optval, struct sctp_authchunk, optsize);
3033
3034                         SCTP_INP_WLOCK(inp);
3035                         if (sctp_auth_add_chunk(sauth->sauth_chunk, inp->sctp_ep.local_auth_chunks)) {
3036                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3037                                 error = EINVAL;
3038                         }
3039                         SCTP_INP_WUNLOCK(inp);
3040                         break;
3041                 }
3042         case SCTP_AUTH_KEY:
3043                 {
3044                         struct sctp_authkey *sca;
3045                         struct sctp_keyhead *shared_keys;
3046                         sctp_sharedkey_t *shared_key;
3047                         sctp_key_t *key = NULL;
3048                         size_t size;
3049
3050                         SCTP_CHECK_AND_CAST(sca, optval, struct sctp_authkey, optsize);
3051                         SCTP_FIND_STCB(inp, stcb, sca->sca_assoc_id);
3052                         size = optsize - sizeof(*sca);
3053
3054                         if (stcb) {
3055                                 /* set it on the assoc */
3056                                 shared_keys = &stcb->asoc.shared_keys;
3057                                 /* clear the cached keys for this key id */
3058                                 sctp_clear_cachedkeys(stcb, sca->sca_keynumber);
3059                                 /*
3060                                  * create the new shared key and
3061                                  * insert/replace it
3062                                  */
3063                                 if (size > 0) {
3064                                         key = sctp_set_key(sca->sca_key, (uint32_t) size);
3065                                         if (key == NULL) {
3066                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
3067                                                 error = ENOMEM;
3068                                                 SCTP_TCB_UNLOCK(stcb);
3069                                                 break;
3070                                         }
3071                                 }
3072                                 shared_key = sctp_alloc_sharedkey();
3073                                 if (shared_key == NULL) {
3074                                         sctp_free_key(key);
3075                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
3076                                         error = ENOMEM;
3077                                         SCTP_TCB_UNLOCK(stcb);
3078                                         break;
3079                                 }
3080                                 shared_key->key = key;
3081                                 shared_key->keyid = sca->sca_keynumber;
3082                                 error = sctp_insert_sharedkey(shared_keys, shared_key);
3083                                 SCTP_TCB_UNLOCK(stcb);
3084                         } else {
3085                                 /* set it on the endpoint */
3086                                 SCTP_INP_WLOCK(inp);
3087                                 shared_keys = &inp->sctp_ep.shared_keys;
3088                                 /*
3089                                  * clear the cached keys on all assocs for
3090                                  * this key id
3091                                  */
3092                                 sctp_clear_cachedkeys_ep(inp, sca->sca_keynumber);
3093                                 /*
3094                                  * create the new shared key and
3095                                  * insert/replace it
3096                                  */
3097                                 if (size > 0) {
3098                                         key = sctp_set_key(sca->sca_key, (uint32_t) size);
3099                                         if (key == NULL) {
3100                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
3101                                                 error = ENOMEM;
3102                                                 SCTP_INP_WUNLOCK(inp);
3103                                                 break;
3104                                         }
3105                                 }
3106                                 shared_key = sctp_alloc_sharedkey();
3107                                 if (shared_key == NULL) {
3108                                         sctp_free_key(key);
3109                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
3110                                         error = ENOMEM;
3111                                         SCTP_INP_WUNLOCK(inp);
3112                                         break;
3113                                 }
3114                                 shared_key->key = key;
3115                                 shared_key->keyid = sca->sca_keynumber;
3116                                 error = sctp_insert_sharedkey(shared_keys, shared_key);
3117                                 SCTP_INP_WUNLOCK(inp);
3118                         }
3119                         break;
3120                 }
3121         case SCTP_HMAC_IDENT:
3122                 {
3123                         struct sctp_hmacalgo *shmac;
3124                         sctp_hmaclist_t *hmaclist;
3125                         uint16_t hmacid;
3126                         uint32_t i;
3127
3128                         size_t found;
3129
3130                         SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, optsize);
3131                         if (optsize < sizeof(struct sctp_hmacalgo) + shmac->shmac_number_of_idents * sizeof(uint16_t)) {
3132                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3133                                 error = EINVAL;
3134                                 break;
3135                         }
3136                         hmaclist = sctp_alloc_hmaclist(shmac->shmac_number_of_idents);
3137                         if (hmaclist == NULL) {
3138                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
3139                                 error = ENOMEM;
3140                                 break;
3141                         }
3142                         for (i = 0; i < shmac->shmac_number_of_idents; i++) {
3143                                 hmacid = shmac->shmac_idents[i];
3144                                 if (sctp_auth_add_hmacid(hmaclist, hmacid)) {
3145                                          /* invalid HMACs were found */ ;
3146                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3147                                         error = EINVAL;
3148                                         sctp_free_hmaclist(hmaclist);
3149                                         goto sctp_set_hmac_done;
3150                                 }
3151                         }
3152                         found = 0;
3153                         for (i = 0; i < hmaclist->num_algo; i++) {
3154                                 if (hmaclist->hmac[i] == SCTP_AUTH_HMAC_ID_SHA1) {
3155                                         /* already in list */
3156                                         found = 1;
3157                                 }
3158                         }
3159                         if (!found) {
3160                                 sctp_free_hmaclist(hmaclist);
3161                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3162                                 error = EINVAL;
3163                                 break;
3164                         }
3165                         /* set it on the endpoint */
3166                         SCTP_INP_WLOCK(inp);
3167                         if (inp->sctp_ep.local_hmacs)
3168                                 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3169                         inp->sctp_ep.local_hmacs = hmaclist;
3170                         SCTP_INP_WUNLOCK(inp);
3171         sctp_set_hmac_done:
3172                         break;
3173                 }
3174         case SCTP_AUTH_ACTIVE_KEY:
3175                 {
3176                         struct sctp_authkeyid *scact;
3177
3178                         SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid,
3179                             optsize);
3180                         SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id);
3181
3182                         /* set the active key on the right place */
3183                         if (stcb) {
3184                                 /* set the active key on the assoc */
3185                                 if (sctp_auth_setactivekey(stcb,
3186                                     scact->scact_keynumber)) {
3187                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
3188                                             SCTP_FROM_SCTP_USRREQ,
3189                                             EINVAL);
3190                                         error = EINVAL;
3191                                 }
3192                                 SCTP_TCB_UNLOCK(stcb);
3193                         } else {
3194                                 /* set the active key on the endpoint */
3195                                 SCTP_INP_WLOCK(inp);
3196                                 if (sctp_auth_setactivekey_ep(inp,
3197                                     scact->scact_keynumber)) {
3198                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
3199                                             SCTP_FROM_SCTP_USRREQ,
3200                                             EINVAL);
3201                                         error = EINVAL;
3202                                 }
3203                                 SCTP_INP_WUNLOCK(inp);
3204                         }
3205                         break;
3206                 }
3207         case SCTP_AUTH_DELETE_KEY:
3208                 {
3209                         struct sctp_authkeyid *scdel;
3210
3211                         SCTP_CHECK_AND_CAST(scdel, optval, struct sctp_authkeyid,
3212                             optsize);
3213                         SCTP_FIND_STCB(inp, stcb, scdel->scact_assoc_id);
3214
3215                         /* delete the key from the right place */
3216                         if (stcb) {
3217                                 if (sctp_delete_sharedkey(stcb,
3218                                     scdel->scact_keynumber)) {
3219                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
3220                                             SCTP_FROM_SCTP_USRREQ,
3221                                             EINVAL);
3222                                         error = EINVAL;
3223                                 }
3224                                 SCTP_TCB_UNLOCK(stcb);
3225                         } else {
3226                                 SCTP_INP_WLOCK(inp);
3227                                 if (sctp_delete_sharedkey_ep(inp,
3228                                     scdel->scact_keynumber)) {
3229                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
3230                                             SCTP_FROM_SCTP_USRREQ,
3231                                             EINVAL);
3232                                         error = EINVAL;
3233                                 }
3234                                 SCTP_INP_WUNLOCK(inp);
3235                         }
3236                         break;
3237                 }
3238         case SCTP_AUTH_DEACTIVATE_KEY:
3239                 {
3240                         struct sctp_authkeyid *keyid;
3241
3242                         SCTP_CHECK_AND_CAST(keyid, optval, struct sctp_authkeyid,
3243                             optsize);
3244                         SCTP_FIND_STCB(inp, stcb, keyid->scact_assoc_id);
3245
3246                         /* deactivate the key from the right place */
3247                         if (stcb) {
3248                                 if (sctp_deact_sharedkey(stcb,
3249                                     keyid->scact_keynumber)) {
3250                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
3251                                             SCTP_FROM_SCTP_USRREQ,
3252                                             EINVAL);
3253                                         error = EINVAL;
3254                                 }
3255                                 SCTP_TCB_UNLOCK(stcb);
3256                         } else {
3257                                 SCTP_INP_WLOCK(inp);
3258                                 if (sctp_deact_sharedkey_ep(inp,
3259                                     keyid->scact_keynumber)) {
3260                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
3261                                             SCTP_FROM_SCTP_USRREQ,
3262                                             EINVAL);
3263                                         error = EINVAL;
3264                                 }
3265                                 SCTP_INP_WUNLOCK(inp);
3266                         }
3267                         break;
3268                 }
3269
3270         case SCTP_RESET_STREAMS:
3271                 {
3272                         struct sctp_stream_reset *strrst;
3273                         uint8_t send_in = 0, send_tsn = 0, send_out = 0,
3274                                 addstream = 0;
3275                         uint16_t addstrmcnt = 0;
3276                         int i;
3277
3278                         SCTP_CHECK_AND_CAST(strrst, optval, struct sctp_stream_reset, optsize);
3279                         SCTP_FIND_STCB(inp, stcb, strrst->strrst_assoc_id);
3280
3281                         if (stcb == NULL) {
3282                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
3283                                 error = ENOENT;
3284                                 break;
3285                         }
3286                         if (stcb->asoc.peer_supports_strreset == 0) {
3287                                 /*
3288                                  * Peer does not support it, we return
3289                                  * protocol not supported since this is true
3290                                  * for this feature and this peer, not the
3291                                  * socket request in general.
3292                                  */
3293                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EPROTONOSUPPORT);
3294                                 error = EPROTONOSUPPORT;
3295                                 SCTP_TCB_UNLOCK(stcb);
3296                                 break;
3297                         }
3298                         if (stcb->asoc.stream_reset_outstanding) {
3299                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
3300                                 error = EALREADY;
3301                                 SCTP_TCB_UNLOCK(stcb);
3302                                 break;
3303                         }
3304                         if (strrst->strrst_flags == SCTP_RESET_LOCAL_RECV) {
3305                                 send_in = 1;
3306                         } else if (strrst->strrst_flags == SCTP_RESET_LOCAL_SEND) {
3307                                 send_out = 1;
3308                         } else if (strrst->strrst_flags == SCTP_RESET_BOTH) {
3309                                 send_in = 1;
3310                                 send_out = 1;
3311                         } else if (strrst->strrst_flags == SCTP_RESET_TSN) {
3312                                 send_tsn = 1;
3313                         } else if (strrst->strrst_flags == SCTP_RESET_ADD_STREAMS) {
3314                                 if (send_tsn ||
3315                                     send_in ||
3316                                     send_out) {
3317                                         /* We can't do that and add streams */
3318                                         error = EINVAL;
3319                                         goto skip_stuff;
3320                                 }
3321                                 if (stcb->asoc.stream_reset_outstanding) {
3322                                         error = EBUSY;
3323                                         goto skip_stuff;
3324                                 }
3325                                 addstream = 1;
3326                                 /* We allocate here */
3327                                 addstrmcnt = strrst->strrst_num_streams;
3328                                 if ((int)(addstrmcnt + stcb->asoc.streamoutcnt) > 0xffff) {
3329                                         /* You can't have more than 64k */
3330                                         error = EINVAL;
3331                                         goto skip_stuff;
3332                                 }
3333                                 if ((stcb->asoc.strm_realoutsize - stcb->asoc.streamoutcnt) < addstrmcnt) {
3334                                         /* Need to allocate more */
3335                                         struct sctp_stream_out *oldstream;
3336                                         struct sctp_stream_queue_pending *sp;
3337                                         int removed;
3338
3339                                         oldstream = stcb->asoc.strmout;
3340                                         /* get some more */
3341                                         SCTP_MALLOC(stcb->asoc.strmout, struct sctp_stream_out *,
3342                                             ((stcb->asoc.streamoutcnt + addstrmcnt) * sizeof(struct sctp_stream_out)),
3343                                             SCTP_M_STRMO);
3344                                         if (stcb->asoc.strmout == NULL) {
3345                                                 stcb->asoc.strmout = oldstream;
3346                                                 error = ENOMEM;
3347                                                 goto skip_stuff;
3348                                         }
3349                                         /*
3350                                          * Ok now we proceed with copying
3351                                          * the old out stuff and
3352                                          * initializing the new stuff.
3353                                          */
3354                                         SCTP_TCB_SEND_LOCK(stcb);
3355                                         for (i = 0; i < stcb->asoc.streamoutcnt; i++) {
3356                                                 TAILQ_INIT(&stcb->asoc.strmout[i].outqueue);
3357                                                 stcb->asoc.strmout[i].next_sequence_sent = oldstream[i].next_sequence_sent;
3358                                                 stcb->asoc.strmout[i].last_msg_incomplete = oldstream[i].last_msg_incomplete;
3359                                                 stcb->asoc.strmout[i].stream_no = i;
3360                                                 if (oldstream[i].next_spoke.tqe_next) {
3361                                                         sctp_remove_from_wheel(stcb, &stcb->asoc, &oldstream[i], 1);
3362                                                         stcb->asoc.strmout[i].next_spoke.tqe_next = NULL;
3363                                                         stcb->asoc.strmout[i].next_spoke.tqe_prev = NULL;
3364                                                         removed = 1;
3365                                                 } else {
3366                                                         /* not on out wheel */
3367                                                         stcb->asoc.strmout[i].next_spoke.tqe_next = NULL;
3368                                                         stcb->asoc.strmout[i].next_spoke.tqe_prev = NULL;
3369                                                         removed = 0;
3370                                                 }
3371                                                 /*
3372                                                  * now anything on those
3373                                                  * queues?
3374                                                  */
3375                                                 while (TAILQ_EMPTY(&oldstream[i].outqueue) == 0) {
3376                                                         sp = TAILQ_FIRST(&oldstream[i].outqueue);
3377                                                         TAILQ_REMOVE(&oldstream[i].outqueue, sp, next);
3378                                                         TAILQ_INSERT_TAIL(&stcb->asoc.strmout[i].outqueue, sp, next);
3379                                                 }
3380                                                 /* Did we disrupt the wheel? */
3381                                                 if (removed) {
3382                                                         sctp_insert_on_wheel(stcb,
3383                                                             &stcb->asoc,
3384                                                             &stcb->asoc.strmout[i],
3385                                                             1);
3386                                                 }
3387                                                 /*
3388                                                  * Now move assoc pointers
3389                                                  * too
3390                                                  */
3391                                                 if (stcb->asoc.last_out_stream == &oldstream[i]) {
3392                                                         stcb->asoc.last_out_stream = &stcb->asoc.strmout[i];
3393                                                 }
3394                                                 if (stcb->asoc.locked_on_sending == &oldstream[i]) {
3395                                                         stcb->asoc.locked_on_sending = &stcb->asoc.strmout[i];
3396                                                 }
3397                                         }
3398                                         /* now the new streams */
3399                                         for (i = stcb->asoc.streamoutcnt; i < (stcb->asoc.streamoutcnt + addstrmcnt); i++) {
3400                                                 stcb->asoc.strmout[i].next_sequence_sent = 0x0;
3401                                                 TAILQ_INIT(&stcb->asoc.strmout[i].outqueue);
3402                                                 stcb->asoc.strmout[i].stream_no = i;
3403                                                 stcb->asoc.strmout[i].last_msg_incomplete = 0;
3404                                                 stcb->asoc.strmout[i].next_spoke.tqe_next = NULL;
3405                                                 stcb->asoc.strmout[i].next_spoke.tqe_prev = NULL;
3406                                         }
3407                                         stcb->asoc.strm_realoutsize = stcb->asoc.streamoutcnt + addstrmcnt;
3408                                         SCTP_FREE(oldstream, SCTP_M_STRMO);
3409                                 }
3410                                 SCTP_TCB_SEND_UNLOCK(stcb);
3411                                 goto skip_stuff;
3412                         } else {
3413                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3414                                 error = EINVAL;
3415                                 SCTP_TCB_UNLOCK(stcb);
3416                                 break;
3417                         }
3418                         for (i = 0; i < strrst->strrst_num_streams; i++) {
3419                                 if ((send_in) &&
3420
3421                                     (strrst->strrst_list[i] > stcb->asoc.streamincnt)) {
3422                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3423                                         error = EINVAL;
3424                                         goto get_out;
3425                                 }
3426                                 if ((send_out) &&
3427                                     (strrst->strrst_list[i] > stcb->asoc.streamoutcnt)) {
3428                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3429                                         error = EINVAL;
3430                                         goto get_out;
3431                                 }
3432                         }
3433         skip_stuff:
3434                         if (error) {
3435                 get_out:
3436                                 SCTP_TCB_UNLOCK(stcb);
3437                                 break;
3438                         }
3439                         error = sctp_send_str_reset_req(stcb, strrst->strrst_num_streams,
3440                             strrst->strrst_list,
3441                             send_out, (stcb->asoc.str_reset_seq_in - 3),
3442                             send_in, send_tsn, addstream, addstrmcnt);
3443
3444                         sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_REQ, SCTP_SO_LOCKED);
3445                         SCTP_TCB_UNLOCK(stcb);
3446                 }
3447                 break;
3448
3449         case SCTP_CONNECT_X:
3450                 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) {
3451                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3452                         error = EINVAL;
3453                         break;
3454                 }
3455                 error = sctp_do_connect_x(so, inp, optval, optsize, p, 0);
3456                 break;
3457
3458         case SCTP_CONNECT_X_DELAYED:
3459                 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) {
3460                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3461                         error = EINVAL;
3462                         break;
3463                 }
3464                 error = sctp_do_connect_x(so, inp, optval, optsize, p, 1);
3465                 break;
3466
3467         case SCTP_CONNECT_X_COMPLETE:
3468                 {
3469                         struct sockaddr *sa;
3470                         struct sctp_nets *net;
3471
3472                         /* FIXME MT: check correct? */
3473                         SCTP_CHECK_AND_CAST(sa, optval, struct sockaddr, optsize);
3474
3475                         /* find tcb */
3476                         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
3477                                 SCTP_INP_RLOCK(inp);
3478                                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
3479                                 if (stcb) {
3480                                         SCTP_TCB_LOCK(stcb);
3481                                         net = sctp_findnet(stcb, sa);
3482                                 }
3483                                 SCTP_INP_RUNLOCK(inp);
3484                         } else {
3485                                 /*
3486                                  * We increment here since
3487                                  * sctp_findassociation_ep_addr() wil do a
3488                                  * decrement if it finds the stcb as long as
3489                                  * the locked tcb (last argument) is NOT a
3490                                  * TCB.. aka NULL.
3491                                  */
3492                                 SCTP_INP_INCR_REF(inp);
3493                                 stcb = sctp_findassociation_ep_addr(&inp, sa, &net, NULL, NULL);
3494                                 if (stcb == NULL) {
3495                                         SCTP_INP_DECR_REF(inp);
3496                                 }
3497                         }
3498
3499                         if (stcb == NULL) {
3500                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
3501                                 error = ENOENT;
3502                                 break;
3503                         }
3504                         if (stcb->asoc.delayed_connection == 1) {
3505                                 stcb->asoc.delayed_connection = 0;
3506                                 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
3507                                 sctp_timer_stop(SCTP_TIMER_TYPE_INIT, inp, stcb,
3508                                     stcb->asoc.primary_destination,
3509                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_9);
3510                                 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
3511                         } else {
3512                                 /*
3513                                  * already expired or did not use delayed
3514                                  * connectx
3515                                  */
3516                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
3517                                 error = EALREADY;
3518                         }
3519                         SCTP_TCB_UNLOCK(stcb);
3520                 }
3521                 break;
3522         case SCTP_MAX_BURST:
3523                 {
3524                         uint8_t *burst;
3525
3526                         SCTP_CHECK_AND_CAST(burst, optval, uint8_t, optsize);
3527
3528                         SCTP_INP_WLOCK(inp);
3529                         if (*burst) {
3530                                 inp->sctp_ep.max_burst = *burst;
3531                         }
3532                         SCTP_INP_WUNLOCK(inp);
3533                 }
3534                 break;
3535         case SCTP_MAXSEG:
3536                 {
3537                         struct sctp_assoc_value *av;
3538                         int ovh;
3539
3540                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
3541                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
3542
3543                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
3544                                 ovh = SCTP_MED_OVERHEAD;
3545                         } else {
3546                                 ovh = SCTP_MED_V4_OVERHEAD;
3547                         }
3548                         if (stcb) {
3549                                 if (av->assoc_value) {
3550                                         stcb->asoc.sctp_frag_point = (av->assoc_value + ovh);
3551                                 } else {
3552                                         stcb->asoc.sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
3553                                 }
3554                                 SCTP_TCB_UNLOCK(stcb);
3555                         } else {
3556                                 SCTP_INP_WLOCK(inp);
3557                                 /*
3558                                  * FIXME MT: I think this is not in tune
3559                                  * with the API ID
3560                                  */
3561                                 if (av->assoc_value) {
3562                                         inp->sctp_frag_point = (av->assoc_value + ovh);
3563                                 } else {
3564                                         inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
3565                                 }
3566                                 SCTP_INP_WUNLOCK(inp);
3567                         }
3568                 }
3569                 break;
3570         case SCTP_EVENTS:
3571                 {
3572                         struct sctp_event_subscribe *events;
3573
3574                         SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, optsize);
3575
3576                         SCTP_INP_WLOCK(inp);
3577                         if (events->sctp_data_io_event) {
3578                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
3579                         } else {
3580                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
3581                         }
3582
3583                         if (events->sctp_association_event) {
3584                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
3585                         } else {
3586                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
3587                         }
3588
3589                         if (events->sctp_address_event) {
3590                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
3591                         } else {
3592                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
3593                         }
3594
3595                         if (events->sctp_send_failure_event) {
3596                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
3597                         } else {
3598                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
3599                         }
3600
3601                         if (events->sctp_peer_error_event) {
3602                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR);
3603                         } else {
3604                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPEERERR);
3605                         }
3606
3607                         if (events->sctp_shutdown_event) {
3608                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
3609                         } else {
3610                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
3611                         }
3612
3613                         if (events->sctp_partial_delivery_event) {
3614                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
3615                         } else {
3616                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
3617                         }
3618
3619                         if (events->sctp_adaptation_layer_event) {
3620                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
3621                         } else {
3622                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
3623                         }
3624
3625                         if (events->sctp_authentication_event) {
3626                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT);
3627                         } else {
3628                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTHEVNT);
3629                         }
3630
3631                         if (events->sctp_sender_dry_event) {
3632                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_DRYEVNT);
3633                                 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3634                                     (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
3635                                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
3636                                         if (stcb) {
3637                                                 SCTP_TCB_LOCK(stcb);
3638                                         }
3639                                         if (stcb &&
3640                                             TAILQ_EMPTY(&stcb->asoc.send_queue) &&
3641                                             TAILQ_EMPTY(&stcb->asoc.sent_queue) &&
3642                                             (stcb->asoc.stream_queue_cnt == 0)) {
3643                                                 sctp_ulp_notify(SCTP_NOTIFY_SENDER_DRY, stcb, 0, NULL, SCTP_SO_LOCKED);
3644                                         }
3645                                         if (stcb) {
3646                                                 SCTP_TCB_UNLOCK(stcb);
3647                                         }
3648                                 }
3649                         } else {
3650                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_DRYEVNT);
3651                         }
3652
3653                         if (events->sctp_stream_reset_events) {
3654                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
3655                         } else {
3656                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
3657                         }
3658                         SCTP_INP_WUNLOCK(inp);
3659                 }
3660                 break;
3661
3662         case SCTP_ADAPTATION_LAYER:
3663                 {
3664                         struct sctp_setadaptation *adap_bits;
3665
3666                         SCTP_CHECK_AND_CAST(adap_bits, optval, struct sctp_setadaptation, optsize);
3667                         SCTP_INP_WLOCK(inp);
3668                         inp->sctp_ep.adaptation_layer_indicator = adap_bits->ssb_adaptation_ind;
3669                         SCTP_INP_WUNLOCK(inp);
3670                 }
3671                 break;
3672 #ifdef SCTP_DEBUG
3673         case SCTP_SET_INITIAL_DBG_SEQ:
3674                 {
3675                         uint32_t *vvv;
3676
3677                         SCTP_CHECK_AND_CAST(vvv, optval, uint32_t, optsize);
3678                         SCTP_INP_WLOCK(inp);
3679                         inp->sctp_ep.initial_sequence_debug = *vvv;
3680                         SCTP_INP_WUNLOCK(inp);
3681                 }
3682                 break;
3683 #endif
3684         case SCTP_DEFAULT_SEND_PARAM:
3685                 {
3686                         struct sctp_sndrcvinfo *s_info;
3687
3688                         SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, optsize);
3689                         SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id);
3690
3691                         if (stcb) {
3692                                 if (s_info->sinfo_stream <= stcb->asoc.streamoutcnt) {
3693                                         memcpy(&stcb->asoc.def_send, s_info, min(optsize, sizeof(stcb->asoc.def_send)));
3694                                 } else {
3695                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3696                                         error = EINVAL;
3697                                 }
3698                                 SCTP_TCB_UNLOCK(stcb);
3699                         } else {
3700                                 SCTP_INP_WLOCK(inp);
3701                                 memcpy(&inp->def_send, s_info, min(optsize, sizeof(inp->def_send)));
3702                                 SCTP_INP_WUNLOCK(inp);
3703                         }
3704                 }
3705                 break;
3706         case SCTP_PEER_ADDR_PARAMS:
3707                 /* Applys to the specific association */
3708                 {
3709                         struct sctp_paddrparams *paddrp;
3710                         struct sctp_nets *net;
3711
3712                         SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, optsize);
3713                         SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id);
3714                         net = NULL;
3715                         if (stcb) {
3716                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address);
3717                         } else {
3718                                 /*
3719                                  * We increment here since
3720                                  * sctp_findassociation_ep_addr() wil do a
3721                                  * decrement if it finds the stcb as long as
3722                                  * the locked tcb (last argument) is NOT a
3723                                  * TCB.. aka NULL.
3724                                  */
3725                                 SCTP_INP_INCR_REF(inp);
3726                                 stcb = sctp_findassociation_ep_addr(&inp,
3727                                     (struct sockaddr *)&paddrp->spp_address,
3728                                     &net, NULL, NULL);
3729                                 if (stcb == NULL) {
3730                                         SCTP_INP_DECR_REF(inp);
3731                                 }
3732                         }
3733                         if (stcb && (net == NULL)) {
3734                                 struct sockaddr *sa;
3735
3736                                 sa = (struct sockaddr *)&paddrp->spp_address;
3737                                 if (sa->sa_family == AF_INET) {
3738                                         struct sockaddr_in *sin;
3739
3740                                         sin = (struct sockaddr_in *)sa;
3741                                         if (sin->sin_addr.s_addr) {
3742                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3743                                                 SCTP_TCB_UNLOCK(stcb);
3744                                                 error = EINVAL;
3745                                                 break;
3746                                         }
3747                                 } else if (sa->sa_family == AF_INET6) {
3748                                         struct sockaddr_in6 *sin6;
3749
3750                                         sin6 = (struct sockaddr_in6 *)sa;
3751                                         if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3752                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3753                                                 SCTP_TCB_UNLOCK(stcb);
3754                                                 error = EINVAL;
3755                                                 break;
3756                                         }
3757                                 } else {
3758                                         error = EAFNOSUPPORT;
3759                                         SCTP_TCB_UNLOCK(stcb);
3760                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
3761                                         break;
3762                                 }
3763                         }
3764                         /* sanity checks */
3765                         if ((paddrp->spp_flags & SPP_HB_ENABLE) && (paddrp->spp_flags & SPP_HB_DISABLE)) {
3766                                 if (stcb)
3767                                         SCTP_TCB_UNLOCK(stcb);
3768                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3769                                 return (EINVAL);
3770                         }
3771                         if ((paddrp->spp_flags & SPP_PMTUD_ENABLE) && (paddrp->spp_flags & SPP_PMTUD_DISABLE)) {
3772                                 if (stcb)
3773                                         SCTP_TCB_UNLOCK(stcb);
3774                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3775                                 return (EINVAL);
3776                         }
3777                         if (stcb) {
3778                                 /************************TCB SPECIFIC SET ******************/
3779                                 /*
3780                                  * do we change the timer for HB, we run
3781                                  * only one?
3782                                  */
3783                                 int ovh = 0;
3784
3785                                 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
3786                                         ovh = SCTP_MED_OVERHEAD;
3787                                 } else {
3788                                         ovh = SCTP_MED_V4_OVERHEAD;
3789                                 }
3790
3791                                 if (paddrp->spp_hbinterval)
3792                                         stcb->asoc.heart_beat_delay = paddrp->spp_hbinterval;
3793                                 else if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO)
3794                                         stcb->asoc.heart_beat_delay = 0;
3795
3796                                 /* network sets ? */
3797                                 if (net) {
3798                                         /************************NET SPECIFIC SET ******************/
3799                                         if (paddrp->spp_flags & SPP_HB_DEMAND) {
3800                                                 /* on demand HB */
3801                                                 if (sctp_send_hb(stcb, 1, net) < 0) {
3802                                                         /* asoc destroyed */
3803                                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3804                                                         error = EINVAL;
3805                                                         break;
3806                                                 }
3807                                         }
3808                                         if (paddrp->spp_flags & SPP_HB_DISABLE) {
3809                                                 net->dest_state |= SCTP_ADDR_NOHB;
3810                                         }
3811                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3812                                                 net->dest_state &= ~SCTP_ADDR_NOHB;
3813                                         }
3814                                         if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && (paddrp->spp_pathmtu >= SCTP_SMALLEST_PMTU)) {
3815                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3816                                                         sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
3817                                                             SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10);
3818                                                 }
3819                                                 if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) {
3820                                                         net->mtu = paddrp->spp_pathmtu + ovh;
3821                                                         if (net->mtu < stcb->asoc.smallest_mtu) {
3822 #ifdef SCTP_PRINT_FOR_B_AND_M
3823                                                                 SCTP_PRINTF("SCTP_PMTU_DISABLE calls sctp_pathmtu_adjustment:%d\n",
3824                                                                     net->mtu);
3825 #endif
3826                                                                 sctp_pathmtu_adjustment(inp, stcb, net, net->mtu);
3827                                                         }
3828                                                 }
3829                                         }
3830                                         if (paddrp->spp_flags & SPP_PMTUD_ENABLE) {
3831                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3832                                                         sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
3833                                                 }
3834                                         }
3835                                         if (paddrp->spp_pathmaxrxt)
3836                                                 net->failure_threshold = paddrp->spp_pathmaxrxt;
3837 #ifdef INET
3838                                         if (paddrp->spp_flags & SPP_IPV4_TOS) {
3839                                                 if (net->ro._l_addr.sin.sin_family == AF_INET) {
3840                                                         net->tos_flowlabel = paddrp->spp_ipv4_tos & 0x000000fc;
3841                                                 }
3842                                         }
3843 #endif
3844 #ifdef INET6
3845                                         if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL) {
3846                                                 if (net->ro._l_addr.sin6.sin6_family == AF_INET6) {
3847                                                         net->tos_flowlabel = paddrp->spp_ipv6_flowlabel;
3848                                                 }
3849                                         }
3850 #endif
3851                                 } else {
3852                                         /************************ASSOC ONLY -- NO NET SPECIFIC SET ******************/
3853                                         if (paddrp->spp_pathmaxrxt)
3854                                                 stcb->asoc.def_net_failure = paddrp->spp_pathmaxrxt;
3855
3856                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3857                                                 /* Turn back on the timer */
3858                                                 stcb->asoc.hb_is_disabled = 0;
3859                                                 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
3860                                         }
3861                                         if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && (paddrp->spp_pathmtu >= SCTP_SMALLEST_PMTU)) {
3862                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3863                                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3864                                                                 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
3865                                                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10);
3866                                                         }
3867                                                         if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) {
3868                                                                 net->mtu = paddrp->spp_pathmtu + ovh;
3869                                                                 if (net->mtu < stcb->asoc.smallest_mtu) {
3870 #ifdef SCTP_PRINT_FOR_B_AND_M
3871                                                                         SCTP_PRINTF("SCTP_PMTU_DISABLE calls sctp_pathmtu_adjustment:%d\n",
3872                                                                             net->mtu);
3873 #endif
3874                                                                         sctp_pathmtu_adjustment(inp, stcb, net, net->mtu);
3875                                                                 }
3876                                                         }
3877                                                 }
3878                                         }
3879                                         if (paddrp->spp_flags & SPP_PMTUD_ENABLE) {
3880                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3881                                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3882                                                                 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
3883                                                         }
3884                                                 }
3885                                         }
3886                                         if (paddrp->spp_flags & SPP_HB_DISABLE) {
3887                                                 int cnt_of_unconf = 0;
3888                                                 struct sctp_nets *lnet;
3889
3890                                                 stcb->asoc.hb_is_disabled = 1;
3891                                                 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
3892                                                         if (lnet->dest_state & SCTP_ADDR_UNCONFIRMED) {
3893                                                                 cnt_of_unconf++;
3894                                                         }
3895                                                 }
3896                                                 /*
3897                                                  * stop the timer ONLY if we
3898                                                  * have no unconfirmed
3899                                                  * addresses
3900                                                  */
3901                                                 if (cnt_of_unconf == 0) {
3902                                                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3903                                                                 sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net,
3904                                                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_11);
3905                                                         }
3906                                                 }
3907                                         }
3908                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3909                                                 /* start up the timer. */
3910                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3911                                                         sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
3912                                                 }
3913                                         }
3914 #ifdef INET
3915                                         if (paddrp->spp_flags & SPP_IPV4_TOS)
3916                                                 stcb->asoc.default_tos = paddrp->spp_ipv4_tos & 0x000000fc;
3917 #endif
3918 #ifdef INET6
3919                                         if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL)
3920                                                 stcb->asoc.default_flowlabel = paddrp->spp_ipv6_flowlabel;
3921 #endif
3922
3923                                 }
3924                                 SCTP_TCB_UNLOCK(stcb);
3925                         } else {
3926                                 /************************NO TCB, SET TO default stuff ******************/
3927                                 SCTP_INP_WLOCK(inp);
3928                                 /*
3929                                  * For the TOS/FLOWLABEL stuff you set it
3930                                  * with the options on the socket
3931                                  */
3932                                 if (paddrp->spp_pathmaxrxt) {
3933                                         inp->sctp_ep.def_net_failure = paddrp->spp_pathmaxrxt;
3934                                 }
3935                                 if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO)
3936                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = 0;
3937                                 else if (paddrp->spp_hbinterval) {
3938                                         if (paddrp->spp_hbinterval > SCTP_MAX_HB_INTERVAL)
3939                                                 paddrp->spp_hbinterval = SCTP_MAX_HB_INTERVAL;
3940                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(paddrp->spp_hbinterval);
3941                                 }
3942                                 if (paddrp->spp_flags & SPP_HB_ENABLE) {
3943                                         sctp_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
3944
3945                                 } else if (paddrp->spp_flags & SPP_HB_DISABLE) {
3946                                         sctp_feature_on(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
3947                                 }
3948                                 SCTP_INP_WUNLOCK(inp);
3949                         }
3950                 }
3951                 break;
3952         case SCTP_RTOINFO:
3953                 {
3954                         struct sctp_rtoinfo *srto;
3955                         uint32_t new_init, new_min, new_max;
3956
3957                         SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, optsize);
3958                         SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id);
3959
3960                         if (stcb) {
3961                                 if (srto->srto_initial)
3962                                         new_init = srto->srto_initial;
3963                                 else
3964                                         new_init = stcb->asoc.initial_rto;
3965                                 if (srto->srto_max)
3966                                         new_max = srto->srto_max;
3967                                 else
3968                                         new_max = stcb->asoc.maxrto;
3969                                 if (srto->srto_min)
3970                                         new_min = srto->srto_min;
3971                                 else
3972                                         new_min = stcb->asoc.minrto;
3973                                 if ((new_min <= new_init) && (new_init <= new_max)) {
3974                                         stcb->asoc.initial_rto = new_init;
3975                                         stcb->asoc.maxrto = new_max;
3976                                         stcb->asoc.minrto = new_min;
3977                                 } else {
3978                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3979                                         error = EINVAL;
3980                                 }
3981                                 SCTP_TCB_UNLOCK(stcb);
3982                         } else {
3983                                 SCTP_INP_WLOCK(inp);
3984                                 if (srto->srto_initial)
3985                                         new_init = srto->srto_initial;
3986                                 else
3987                                         new_init = inp->sctp_ep.initial_rto;
3988                                 if (srto->srto_max)
3989                                         new_max = srto->srto_max;
3990                                 else
3991                                         new_max = inp->sctp_ep.sctp_maxrto;
3992                                 if (srto->srto_min)
3993                                         new_min = srto->srto_min;
3994                                 else
3995                                         new_min = inp->sctp_ep.sctp_minrto;
3996                                 if ((new_min <= new_init) && (new_init <= new_max)) {
3997                                         inp->sctp_ep.initial_rto = new_init;
3998                                         inp->sctp_ep.sctp_maxrto = new_max;
3999                                         inp->sctp_ep.sctp_minrto = new_min;
4000                                 } else {
4001                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4002                                         error = EINVAL;
4003                                 }
4004                                 SCTP_INP_WUNLOCK(inp);
4005                         }
4006                 }
4007                 break;
4008         case SCTP_ASSOCINFO:
4009                 {
4010                         struct sctp_assocparams *sasoc;
4011
4012                         SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, optsize);
4013                         SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id);
4014                         if (sasoc->sasoc_cookie_life) {
4015                                 /* boundary check the cookie life */
4016                                 if (sasoc->sasoc_cookie_life < 1000)
4017                                         sasoc->sasoc_cookie_life = 1000;
4018                                 if (sasoc->sasoc_cookie_life > SCTP_MAX_COOKIE_LIFE) {
4019                                         sasoc->sasoc_cookie_life = SCTP_MAX_COOKIE_LIFE;
4020                                 }
4021                         }
4022                         if (stcb) {
4023                                 if (sasoc->sasoc_asocmaxrxt)
4024                                         stcb->asoc.max_send_times = sasoc->sasoc_asocmaxrxt;
4025                                 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets;
4026                                 sasoc->sasoc_peer_rwnd = 0;
4027                                 sasoc->sasoc_local_rwnd = 0;
4028                                 if (sasoc->sasoc_cookie_life) {
4029                                         stcb->asoc.cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life);
4030                                 }
4031                                 SCTP_TCB_UNLOCK(stcb);
4032                         } else {
4033                                 SCTP_INP_WLOCK(inp);
4034                                 if (sasoc->sasoc_asocmaxrxt)
4035                                         inp->sctp_ep.max_send_times = sasoc->sasoc_asocmaxrxt;
4036                                 sasoc->sasoc_number_peer_destinations = 0;
4037                                 sasoc->sasoc_peer_rwnd = 0;
4038                                 sasoc->sasoc_local_rwnd = 0;
4039                                 if (sasoc->sasoc_cookie_life) {
4040                                         inp->sctp_ep.def_cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life);
4041                                 }
4042                                 SCTP_INP_WUNLOCK(inp);
4043                         }
4044                 }
4045                 break;
4046         case SCTP_INITMSG:
4047                 {
4048                         struct sctp_initmsg *sinit;
4049
4050                         SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, optsize);
4051                         SCTP_INP_WLOCK(inp);
4052                         if (sinit->sinit_num_ostreams)
4053                                 inp->sctp_ep.pre_open_stream_count = sinit->sinit_num_ostreams;
4054
4055                         if (sinit->sinit_max_instreams)
4056                                 inp->sctp_ep.max_open_streams_intome = sinit->sinit_max_instreams;
4057
4058                         if (sinit->sinit_max_attempts)
4059                                 inp->sctp_ep.max_init_times = sinit->sinit_max_attempts;
4060
4061                         if (sinit->sinit_max_init_timeo)
4062                                 inp->sctp_ep.initial_init_rto_max = sinit->sinit_max_init_timeo;
4063                         SCTP_INP_WUNLOCK(inp);
4064                 }
4065                 break;
4066         case SCTP_PRIMARY_ADDR:
4067                 {
4068                         struct sctp_setprim *spa;
4069                         struct sctp_nets *net, *lnet;
4070
4071                         SCTP_CHECK_AND_CAST(spa, optval, struct sctp_setprim, optsize);
4072                         SCTP_FIND_STCB(inp, stcb, spa->ssp_assoc_id);
4073
4074                         net = NULL;
4075                         if (stcb) {
4076                                 net = sctp_findnet(stcb, (struct sockaddr *)&spa->ssp_addr);
4077                         } else {
4078                                 /*
4079                                  * We increment here since
4080                                  * sctp_findassociation_ep_addr() wil do a
4081                                  * decrement if it finds the stcb as long as
4082                                  * the locked tcb (last argument) is NOT a
4083                                  * TCB.. aka NULL.
4084                                  */
4085                                 SCTP_INP_INCR_REF(inp);
4086                                 stcb = sctp_findassociation_ep_addr(&inp,
4087                                     (struct sockaddr *)&spa->ssp_addr,
4088                                     &net, NULL, NULL);
4089                                 if (stcb == NULL) {
4090                                         SCTP_INP_DECR_REF(inp);
4091                                 }
4092                         }
4093
4094                         if ((stcb) && (net)) {
4095                                 if ((net != stcb->asoc.primary_destination) &&
4096                                     (!(net->dest_state & SCTP_ADDR_UNCONFIRMED))) {
4097                                         /* Ok we need to set it */
4098                                         lnet = stcb->asoc.primary_destination;
4099                                         if (sctp_set_primary_addr(stcb, (struct sockaddr *)NULL, net) == 0) {
4100                                                 if (net->dest_state & SCTP_ADDR_SWITCH_PRIMARY) {
4101                                                         net->dest_state |= SCTP_ADDR_DOUBLE_SWITCH;
4102                                                 }
4103                                                 net->dest_state |= SCTP_ADDR_SWITCH_PRIMARY;
4104                                         }
4105                                 }
4106                         } else {
4107                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4108                                 error = EINVAL;
4109                         }
4110                         if (stcb) {
4111                                 SCTP_TCB_UNLOCK(stcb);
4112                         }
4113                 }
4114                 break;
4115         case SCTP_SET_DYNAMIC_PRIMARY:
4116                 {
4117                         union sctp_sockstore *ss;
4118
4119                         error = priv_check(curthread,
4120                             PRIV_NETINET_RESERVEDPORT);
4121                         if (error)
4122                                 break;
4123
4124                         SCTP_CHECK_AND_CAST(ss, optval, union sctp_sockstore, optsize);
4125                         /* SUPER USER CHECK? */
4126                         error = sctp_dynamic_set_primary(&ss->sa, vrf_id);
4127                 }
4128                 break;
4129         case SCTP_SET_PEER_PRIMARY_ADDR:
4130                 {
4131                         struct sctp_setpeerprim *sspp;
4132
4133                         SCTP_CHECK_AND_CAST(sspp, optval, struct sctp_setpeerprim, optsize);
4134                         SCTP_FIND_STCB(inp, stcb, sspp->sspp_assoc_id);
4135                         if (stcb != NULL) {
4136                                 struct sctp_ifa *ifa;
4137
4138                                 ifa = sctp_find_ifa_by_addr((struct sockaddr *)&sspp->sspp_addr,
4139                                     stcb->asoc.vrf_id, SCTP_ADDR_NOT_LOCKED);
4140                                 if (ifa == NULL) {
4141                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4142                                         error = EINVAL;
4143                                         goto out_of_it;
4144                                 }
4145                                 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
4146                                         /*
4147                                          * Must validate the ifa found is in
4148                                          * our ep
4149                                          */
4150                                         struct sctp_laddr *laddr;
4151                                         int found = 0;
4152
4153                                         LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4154                                                 if (laddr->ifa == NULL) {
4155                                                         SCTPDBG(SCTP_DEBUG_OUTPUT1, "%s: NULL ifa\n",
4156                                                             __FUNCTION__);
4157                                                         continue;
4158                                                 }
4159                                                 if (laddr->ifa == ifa) {
4160                                                         found = 1;
4161                                                         break;
4162                                                 }
4163                                         }
4164                                         if (!found) {
4165                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4166                                                 error = EINVAL;
4167                                                 goto out_of_it;
4168                                         }
4169                                 }
4170                                 if (sctp_set_primary_ip_address_sa(stcb,
4171                                     (struct sockaddr *)&sspp->sspp_addr) != 0) {
4172                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4173                                         error = EINVAL;
4174                                 }
4175                 out_of_it:
4176                                 SCTP_TCB_UNLOCK(stcb);
4177                         } else {
4178                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4179                                 error = EINVAL;
4180                         }
4181
4182                 }
4183                 break;
4184         case SCTP_BINDX_ADD_ADDR:
4185                 {
4186                         struct sctp_getaddresses *addrs;
4187                         size_t sz;
4188                         struct thread *td;
4189
4190                         td = (struct thread *)p;
4191                         SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses,
4192                             optsize);
4193                         if (addrs->addr->sa_family == AF_INET) {
4194                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in);
4195                                 if (optsize < sz) {
4196                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4197                                         error = EINVAL;
4198                                         break;
4199                                 }
4200                                 if (td != NULL && (error = prison_local_ip4(td->td_ucred, &(((struct sockaddr_in *)(addrs->addr))->sin_addr)))) {
4201                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, error);
4202                                         break;
4203                                 }
4204 #ifdef INET6
4205                         } else if (addrs->addr->sa_family == AF_INET6) {
4206                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in6);
4207                                 if (optsize < sz) {
4208                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4209                                         error = EINVAL;
4210                                         break;
4211                                 }
4212                                 if (td != NULL && (error = prison_local_ip6(td->td_ucred, &(((struct sockaddr_in6 *)(addrs->addr))->sin6_addr),
4213                                     (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
4214                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, error);
4215                                         break;
4216                                 }
4217 #endif
4218                         } else {
4219                                 error = EAFNOSUPPORT;
4220                                 break;
4221                         }
4222                         sctp_bindx_add_address(so, inp, addrs->addr,
4223                             addrs->sget_assoc_id, vrf_id,
4224                             &error, p);
4225                 }
4226                 break;
4227         case SCTP_BINDX_REM_ADDR:
4228                 {
4229                         struct sctp_getaddresses *addrs;
4230                         size_t sz;
4231                         struct thread *td;
4232
4233                         td = (struct thread *)p;
4234
4235                         SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses, optsize);
4236                         if (addrs->addr->sa_family == AF_INET) {
4237                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in);
4238                                 if (optsize < sz) {
4239                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4240                                         error = EINVAL;
4241                                         break;
4242                                 }
4243                                 if (td != NULL && (error = prison_local_ip4(td->td_ucred, &(((struct sockaddr_in *)(addrs->addr))->sin_addr)))) {
4244                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, error);
4245                                         break;
4246                                 }
4247 #ifdef INET6
4248                         } else if (addrs->addr->sa_family == AF_INET6) {
4249                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in6);
4250                                 if (optsize < sz) {
4251                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4252                                         error = EINVAL;
4253                                         break;
4254                                 }
4255                                 if (td != NULL && (error = prison_local_ip6(td->td_ucred, &(((struct sockaddr_in6 *)(addrs->addr))->sin6_addr),
4256                                     (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
4257                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, error);
4258                                         break;
4259                                 }
4260 #endif
4261                         } else {
4262                                 error = EAFNOSUPPORT;
4263                                 break;
4264                         }
4265                         sctp_bindx_delete_address(so, inp, addrs->addr,
4266                             addrs->sget_assoc_id, vrf_id,
4267                             &error);
4268                 }
4269                 break;
4270         default:
4271                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
4272                 error = ENOPROTOOPT;
4273                 break;
4274         }                       /* end switch (opt) */
4275         return (error);
4276 }
4277
4278 int
4279 sctp_ctloutput(struct socket *so, struct sockopt *sopt)
4280 {
4281         void *optval = NULL;
4282         size_t optsize = 0;
4283         struct sctp_inpcb *inp;
4284         void *p;
4285         int error = 0;
4286
4287         inp = (struct sctp_inpcb *)so->so_pcb;
4288         if (inp == 0) {
4289                 /* I made the same as TCP since we are not setup? */
4290                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4291                 return (ECONNRESET);
4292         }
4293         if (sopt->sopt_level != IPPROTO_SCTP) {
4294                 /* wrong proto level... send back up to IP */
4295 #ifdef INET6
4296                 if (INP_CHECK_SOCKAF(so, AF_INET6))
4297                         error = ip6_ctloutput(so, sopt);
4298                 else
4299 #endif                          /* INET6 */
4300                         error = ip_ctloutput(so, sopt);
4301                 return (error);
4302         }
4303         optsize = sopt->sopt_valsize;
4304         if (optsize) {
4305                 SCTP_MALLOC(optval, void *, optsize, SCTP_M_SOCKOPT);
4306                 if (optval == NULL) {
4307                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOBUFS);
4308                         return (ENOBUFS);
4309                 }
4310                 error = sooptcopyin(sopt, optval, optsize, optsize);
4311                 if (error) {
4312                         SCTP_FREE(optval, SCTP_M_SOCKOPT);
4313                         goto out;
4314                 }
4315         }
4316         p = (void *)sopt->sopt_td;
4317         if (sopt->sopt_dir == SOPT_SET) {
4318                 error = sctp_setopt(so, sopt->sopt_name, optval, optsize, p);
4319         } else if (sopt->sopt_dir == SOPT_GET) {
4320                 error = sctp_getopt(so, sopt->sopt_name, optval, &optsize, p);
4321         } else {
4322                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4323                 error = EINVAL;
4324         }
4325         if ((error == 0) && (optval != NULL)) {
4326                 error = sooptcopyout(sopt, optval, optsize);
4327                 SCTP_FREE(optval, SCTP_M_SOCKOPT);
4328         } else if (optval != NULL) {
4329                 SCTP_FREE(optval, SCTP_M_SOCKOPT);
4330         }
4331 out:
4332         return (error);
4333 }
4334
4335
4336 static int
4337 sctp_connect(struct socket *so, struct sockaddr *addr, struct thread *p)
4338 {
4339         int error = 0;
4340         int create_lock_on = 0;
4341         uint32_t vrf_id;
4342         struct sctp_inpcb *inp;
4343         struct sctp_tcb *stcb = NULL;
4344
4345         inp = (struct sctp_inpcb *)so->so_pcb;
4346         if (inp == 0) {
4347                 /* I made the same as TCP since we are not setup? */
4348                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4349                 return (ECONNRESET);
4350         }
4351         if (addr == NULL) {
4352                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4353                 return EINVAL;
4354         }
4355 #ifdef INET6
4356         if (addr->sa_family == AF_INET6) {
4357                 struct sockaddr_in6 *sin6p;
4358
4359                 if (addr->sa_len != sizeof(struct sockaddr_in6)) {
4360                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4361                         return (EINVAL);
4362                 }
4363                 sin6p = (struct sockaddr_in6 *)addr;
4364                 if (p != NULL && (error = prison_remote_ip6(p->td_ucred, &sin6p->sin6_addr)) != 0) {
4365                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
4366                         return (error);
4367                 }
4368         } else
4369 #endif
4370         if (addr->sa_family == AF_INET) {
4371                 struct sockaddr_in *sinp;
4372
4373                 if (addr->sa_len != sizeof(struct sockaddr_in)) {
4374                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4375                         return (EINVAL);
4376                 }
4377                 sinp = (struct sockaddr_in *)addr;
4378                 if (p != NULL && (error = prison_remote_ip4(p->td_ucred, &sinp->sin_addr)) != 0) {
4379                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
4380                         return (error);
4381                 }
4382         } else {
4383                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EAFNOSUPPORT);
4384                 return (EAFNOSUPPORT);
4385         }
4386         SCTP_INP_INCR_REF(inp);
4387         SCTP_ASOC_CREATE_LOCK(inp);
4388         create_lock_on = 1;
4389
4390
4391         if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4392             (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4393                 /* Should I really unlock ? */
4394                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EFAULT);
4395                 error = EFAULT;
4396                 goto out_now;
4397         }
4398 #ifdef INET6
4399         if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) &&
4400             (addr->sa_family == AF_INET6)) {
4401                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4402                 error = EINVAL;
4403                 goto out_now;
4404         }
4405 #endif                          /* INET6 */
4406         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
4407             SCTP_PCB_FLAGS_UNBOUND) {
4408                 /* Bind a ephemeral port */
4409                 error = sctp_inpcb_bind(so, NULL, NULL, p);
4410                 if (error) {
4411                         goto out_now;
4412                 }
4413         }
4414         /* Now do we connect? */
4415         if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
4416             (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE))) {
4417                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4418                 error = EINVAL;
4419                 goto out_now;
4420         }
4421         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
4422             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
4423                 /* We are already connected AND the TCP model */
4424                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
4425                 error = EADDRINUSE;
4426                 goto out_now;
4427         }
4428         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4429                 SCTP_INP_RLOCK(inp);
4430                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
4431                 SCTP_INP_RUNLOCK(inp);
4432         } else {
4433                 /*
4434                  * We increment here since sctp_findassociation_ep_addr()
4435                  * will do a decrement if it finds the stcb as long as the
4436                  * locked tcb (last argument) is NOT a TCB.. aka NULL.
4437                  */
4438                 SCTP_INP_INCR_REF(inp);
4439                 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL);
4440                 if (stcb == NULL) {
4441                         SCTP_INP_DECR_REF(inp);
4442                 } else {
4443                         SCTP_TCB_UNLOCK(stcb);
4444                 }
4445         }
4446         if (stcb != NULL) {
4447                 /* Already have or am bring up an association */
4448                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
4449                 error = EALREADY;
4450                 goto out_now;
4451         }
4452         vrf_id = inp->def_vrf_id;
4453         /* We are GOOD to go */
4454         stcb = sctp_aloc_assoc(inp, addr, 1, &error, 0, vrf_id, p);
4455         if (stcb == NULL) {
4456                 /* Gak! no memory */
4457                 goto out_now;
4458         }
4459         if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
4460                 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
4461                 /* Set the connected flag so we can queue data */
4462                 soisconnecting(so);
4463         }
4464         SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_COOKIE_WAIT);
4465         (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
4466
4467         /* initialize authentication parameters for the assoc */
4468         sctp_initialize_auth_params(inp, stcb);
4469
4470         sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
4471         SCTP_TCB_UNLOCK(stcb);
4472 out_now:
4473         if (create_lock_on) {
4474                 SCTP_ASOC_CREATE_UNLOCK(inp);
4475         }
4476         SCTP_INP_DECR_REF(inp);
4477         return error;
4478 }
4479
4480 int
4481 sctp_listen(struct socket *so, int backlog, struct thread *p)
4482 {
4483         /*
4484          * Note this module depends on the protocol processing being called
4485          * AFTER any socket level flags and backlog are applied to the
4486          * socket. The traditional way that the socket flags are applied is
4487          * AFTER protocol processing. We have made a change to the
4488          * sys/kern/uipc_socket.c module to reverse this but this MUST be in
4489          * place if the socket API for SCTP is to work properly.
4490          */
4491
4492         int error = 0;
4493         struct sctp_inpcb *inp;
4494
4495         inp = (struct sctp_inpcb *)so->so_pcb;
4496         if (inp == 0) {
4497                 /* I made the same as TCP since we are not setup? */
4498                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4499                 return (ECONNRESET);
4500         }
4501         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
4502                 /* See if we have a listener */
4503                 struct sctp_inpcb *tinp;
4504                 union sctp_sockstore store, *sp;
4505
4506                 sp = &store;
4507                 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
4508                         /* not bound all */
4509                         struct sctp_laddr *laddr;
4510
4511                         LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4512                                 memcpy(&store, &laddr->ifa->address, sizeof(store));
4513                                 sp->sin.sin_port = inp->sctp_lport;
4514                                 tinp = sctp_pcb_findep(&sp->sa, 0, 0, inp->def_vrf_id);
4515                                 if (tinp && (tinp != inp) &&
4516                                     ((tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) == 0) &&
4517                                     ((tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
4518                                     (tinp->sctp_socket->so_qlimit)) {
4519                                         /*
4520                                          * we have a listener already and
4521                                          * its not this inp.
4522                                          */
4523                                         SCTP_INP_DECR_REF(tinp);
4524                                         return (EADDRINUSE);
4525                                 } else if (tinp) {
4526                                         SCTP_INP_DECR_REF(tinp);
4527                                 }
4528                         }
4529                 } else {
4530                         /* Setup a local addr bound all */
4531                         memset(&store, 0, sizeof(store));
4532                         store.sin.sin_port = inp->sctp_lport;
4533 #ifdef INET6
4534                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
4535                                 store.sa.sa_family = AF_INET6;
4536                                 store.sa.sa_len = sizeof(struct sockaddr_in6);
4537                         }
4538 #endif
4539                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
4540                                 store.sa.sa_family = AF_INET;
4541                                 store.sa.sa_len = sizeof(struct sockaddr_in);
4542                         }
4543                         tinp = sctp_pcb_findep(&sp->sa, 0, 0, inp->def_vrf_id);
4544                         if (tinp && (tinp != inp) &&
4545                             ((tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) == 0) &&
4546                             ((tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
4547                             (tinp->sctp_socket->so_qlimit)) {
4548                                 /*
4549                                  * we have a listener already and its not
4550                                  * this inp.
4551                                  */
4552                                 SCTP_INP_DECR_REF(tinp);
4553                                 return (EADDRINUSE);
4554                         } else if (tinp) {
4555                                 SCTP_INP_DECR_REF(inp);
4556                         }
4557                 }
4558         }
4559         SCTP_INP_RLOCK(inp);
4560 #ifdef SCTP_LOCK_LOGGING
4561         if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOCK_LOGGING_ENABLE) {
4562                 sctp_log_lock(inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_SOCK);
4563         }
4564 #endif
4565         SOCK_LOCK(so);
4566         error = solisten_proto_check(so);
4567         if (error) {
4568                 SOCK_UNLOCK(so);
4569                 SCTP_INP_RUNLOCK(inp);
4570                 return (error);
4571         }
4572         if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
4573             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
4574                 /*
4575                  * The unlucky case - We are in the tcp pool with this guy.
4576                  * - Someone else is in the main inp slot. - We must move
4577                  * this guy (the listener) to the main slot - We must then
4578                  * move the guy that was listener to the TCP Pool.
4579                  */
4580                 if (sctp_swap_inpcb_for_listen(inp)) {
4581                         goto in_use;
4582                 }
4583         }
4584         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
4585             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
4586                 /* We are already connected AND the TCP model */
4587 in_use:
4588                 SCTP_INP_RUNLOCK(inp);
4589                 SOCK_UNLOCK(so);
4590                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
4591                 return (EADDRINUSE);
4592         }
4593         SCTP_INP_RUNLOCK(inp);
4594         if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4595                 /* We must do a bind. */
4596                 SOCK_UNLOCK(so);
4597                 if ((error = sctp_inpcb_bind(so, NULL, NULL, p))) {
4598                         /* bind error, probably perm */
4599                         return (error);
4600                 }
4601                 SOCK_LOCK(so);
4602         }
4603         /* It appears for 7.0 and on, we must always call this. */
4604         solisten_proto(so, backlog);
4605         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
4606                 /* remove the ACCEPTCONN flag for one-to-many sockets */
4607                 so->so_options &= ~SO_ACCEPTCONN;
4608         }
4609         if (backlog == 0) {
4610                 /* turning off listen */
4611                 so->so_options &= ~SO_ACCEPTCONN;
4612         }
4613         SOCK_UNLOCK(so);
4614         return (error);
4615 }
4616
4617 static int sctp_defered_wakeup_cnt = 0;
4618
4619 int
4620 sctp_accept(struct socket *so, struct sockaddr **addr)
4621 {
4622         struct sctp_tcb *stcb;
4623         struct sctp_inpcb *inp;
4624         union sctp_sockstore store;
4625
4626 #ifdef INET6
4627         int error;
4628
4629 #endif
4630         inp = (struct sctp_inpcb *)so->so_pcb;
4631
4632         if (inp == 0) {
4633                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4634                 return (ECONNRESET);
4635         }
4636         SCTP_INP_RLOCK(inp);
4637         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
4638                 SCTP_INP_RUNLOCK(inp);
4639                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
4640                 return (EOPNOTSUPP);
4641         }
4642         if (so->so_state & SS_ISDISCONNECTED) {
4643                 SCTP_INP_RUNLOCK(inp);
4644                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ECONNABORTED);
4645                 return (ECONNABORTED);
4646         }
4647         stcb = LIST_FIRST(&inp->sctp_asoc_list);
4648         if (stcb == NULL) {
4649                 SCTP_INP_RUNLOCK(inp);
4650                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4651                 return (ECONNRESET);
4652         }
4653         SCTP_TCB_LOCK(stcb);
4654         SCTP_INP_RUNLOCK(inp);
4655         store = stcb->asoc.primary_destination->ro._l_addr;
4656         SCTP_TCB_UNLOCK(stcb);
4657         switch (store.sa.sa_family) {
4658         case AF_INET:
4659                 {
4660                         struct sockaddr_in *sin;
4661
4662                         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
4663                         sin->sin_family = AF_INET;
4664                         sin->sin_len = sizeof(*sin);
4665                         sin->sin_port = ((struct sockaddr_in *)&store)->sin_port;
4666                         sin->sin_addr = ((struct sockaddr_in *)&store)->sin_addr;
4667                         *addr = (struct sockaddr *)sin;
4668                         break;
4669                 }
4670 #ifdef INET6
4671         case AF_INET6:
4672                 {
4673                         struct sockaddr_in6 *sin6;
4674
4675                         SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
4676                         sin6->sin6_family = AF_INET6;
4677                         sin6->sin6_len = sizeof(*sin6);
4678                         sin6->sin6_port = ((struct sockaddr_in6 *)&store)->sin6_port;
4679
4680                         sin6->sin6_addr = ((struct sockaddr_in6 *)&store)->sin6_addr;
4681                         if ((error = sa6_recoverscope(sin6)) != 0) {
4682                                 SCTP_FREE_SONAME(sin6);
4683                                 return (error);
4684                         }
4685                         *addr = (struct sockaddr *)sin6;
4686                         break;
4687                 }
4688 #endif
4689         default:
4690                 /* TSNH */
4691                 break;
4692         }
4693         /* Wake any delayed sleep action */
4694         if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) {
4695                 SCTP_INP_WLOCK(inp);
4696                 inp->sctp_flags &= ~SCTP_PCB_FLAGS_DONT_WAKE;
4697                 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT) {
4698                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
4699                         SCTP_INP_WUNLOCK(inp);
4700                         SOCKBUF_LOCK(&inp->sctp_socket->so_snd);
4701                         if (sowriteable(inp->sctp_socket)) {
4702                                 sowwakeup_locked(inp->sctp_socket);
4703                         } else {
4704                                 SOCKBUF_UNLOCK(&inp->sctp_socket->so_snd);
4705                         }
4706                         SCTP_INP_WLOCK(inp);
4707                 }
4708                 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT) {
4709                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
4710                         SCTP_INP_WUNLOCK(inp);
4711                         SOCKBUF_LOCK(&inp->sctp_socket->so_rcv);
4712                         if (soreadable(inp->sctp_socket)) {
4713                                 sctp_defered_wakeup_cnt++;
4714                                 sorwakeup_locked(inp->sctp_socket);
4715                         } else {
4716                                 SOCKBUF_UNLOCK(&inp->sctp_socket->so_rcv);
4717                         }
4718                         SCTP_INP_WLOCK(inp);
4719                 }
4720                 SCTP_INP_WUNLOCK(inp);
4721         }
4722         return (0);
4723 }
4724
4725 int
4726 sctp_ingetaddr(struct socket *so, struct sockaddr **addr)
4727 {
4728         struct sockaddr_in *sin;
4729         uint32_t vrf_id;
4730         struct sctp_inpcb *inp;
4731         struct sctp_ifa *sctp_ifa;
4732
4733         /*
4734          * Do the malloc first in case it blocks.
4735          */
4736         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
4737         sin->sin_family = AF_INET;
4738         sin->sin_len = sizeof(*sin);
4739         inp = (struct sctp_inpcb *)so->so_pcb;
4740         if (!inp) {
4741                 SCTP_FREE_SONAME(sin);
4742                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4743                 return ECONNRESET;
4744         }
4745         SCTP_INP_RLOCK(inp);
4746         sin->sin_port = inp->sctp_lport;
4747         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
4748                 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4749                         struct sctp_tcb *stcb;
4750                         struct sockaddr_in *sin_a;
4751                         struct sctp_nets *net;
4752                         int fnd;
4753
4754                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
4755                         if (stcb == NULL) {
4756                                 goto notConn;
4757                         }
4758                         fnd = 0;
4759                         sin_a = NULL;
4760                         SCTP_TCB_LOCK(stcb);
4761                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
4762                                 sin_a = (struct sockaddr_in *)&net->ro._l_addr;
4763                                 if (sin_a == NULL)
4764                                         /* this will make coverity happy */
4765                                         continue;
4766
4767                                 if (sin_a->sin_family == AF_INET) {
4768                                         fnd = 1;
4769                                         break;
4770                                 }
4771                         }
4772                         if ((!fnd) || (sin_a == NULL)) {
4773                                 /* punt */
4774                                 SCTP_TCB_UNLOCK(stcb);
4775                                 goto notConn;
4776                         }
4777                         vrf_id = inp->def_vrf_id;
4778                         sctp_ifa = sctp_source_address_selection(inp,
4779                             stcb,
4780                             (sctp_route_t *) & net->ro,
4781                             net, 0, vrf_id);
4782                         if (sctp_ifa) {
4783                                 sin->sin_addr = sctp_ifa->address.sin.sin_addr;
4784                                 sctp_free_ifa(sctp_ifa);
4785                         }
4786                         SCTP_TCB_UNLOCK(stcb);
4787                 } else {
4788                         /* For the bound all case you get back 0 */
4789         notConn:
4790                         sin->sin_addr.s_addr = 0;
4791                 }
4792
4793         } else {
4794                 /* Take the first IPv4 address in the list */
4795                 struct sctp_laddr *laddr;
4796                 int fnd = 0;
4797
4798                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4799                         if (laddr->ifa->address.sa.sa_family == AF_INET) {
4800                                 struct sockaddr_in *sin_a;
4801
4802                                 sin_a = (struct sockaddr_in *)&laddr->ifa->address.sa;
4803                                 sin->sin_addr = sin_a->sin_addr;
4804                                 fnd = 1;
4805                                 break;
4806                         }
4807                 }
4808                 if (!fnd) {
4809                         SCTP_FREE_SONAME(sin);
4810                         SCTP_INP_RUNLOCK(inp);
4811                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
4812                         return ENOENT;
4813                 }
4814         }
4815         SCTP_INP_RUNLOCK(inp);
4816         (*addr) = (struct sockaddr *)sin;
4817         return (0);
4818 }
4819
4820 int
4821 sctp_peeraddr(struct socket *so, struct sockaddr **addr)
4822 {
4823         struct sockaddr_in *sin = (struct sockaddr_in *)*addr;
4824         int fnd;
4825         struct sockaddr_in *sin_a;
4826         struct sctp_inpcb *inp;
4827         struct sctp_tcb *stcb;
4828         struct sctp_nets *net;
4829
4830         /* Do the malloc first in case it blocks. */
4831         inp = (struct sctp_inpcb *)so->so_pcb;
4832         if ((inp == NULL) ||
4833             ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) {
4834                 /* UDP type and listeners will drop out here */
4835                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
4836                 return (ENOTCONN);
4837         }
4838         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
4839         sin->sin_family = AF_INET;
4840         sin->sin_len = sizeof(*sin);
4841
4842         /* We must recapture incase we blocked */
4843         inp = (struct sctp_inpcb *)so->so_pcb;
4844         if (!inp) {
4845                 SCTP_FREE_SONAME(sin);
4846                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4847                 return ECONNRESET;
4848         }
4849         SCTP_INP_RLOCK(inp);
4850         stcb = LIST_FIRST(&inp->sctp_asoc_list);
4851         if (stcb) {
4852                 SCTP_TCB_LOCK(stcb);
4853         }
4854         SCTP_INP_RUNLOCK(inp);
4855         if (stcb == NULL) {
4856                 SCTP_FREE_SONAME(sin);
4857                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4858                 return ECONNRESET;
4859         }
4860         fnd = 0;
4861         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
4862                 sin_a = (struct sockaddr_in *)&net->ro._l_addr;
4863                 if (sin_a->sin_family == AF_INET) {
4864                         fnd = 1;
4865                         sin->sin_port = stcb->rport;
4866                         sin->sin_addr = sin_a->sin_addr;
4867                         break;
4868                 }
4869         }
4870         SCTP_TCB_UNLOCK(stcb);
4871         if (!fnd) {
4872                 /* No IPv4 address */
4873                 SCTP_FREE_SONAME(sin);
4874                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
4875                 return ENOENT;
4876         }
4877         (*addr) = (struct sockaddr *)sin;
4878         return (0);
4879 }
4880
4881 struct pr_usrreqs sctp_usrreqs = {
4882         .pru_abort = sctp_abort,
4883         .pru_accept = sctp_accept,
4884         .pru_attach = sctp_attach,
4885         .pru_bind = sctp_bind,
4886         .pru_connect = sctp_connect,
4887         .pru_control = in_control,
4888         .pru_close = sctp_close,
4889         .pru_detach = sctp_close,
4890         .pru_sopoll = sopoll_generic,
4891         .pru_flush = sctp_flush,
4892         .pru_disconnect = sctp_disconnect,
4893         .pru_listen = sctp_listen,
4894         .pru_peeraddr = sctp_peeraddr,
4895         .pru_send = sctp_sendm,
4896         .pru_shutdown = sctp_shutdown,
4897         .pru_sockaddr = sctp_ingetaddr,
4898         .pru_sosend = sctp_sosend,
4899         .pru_soreceive = sctp_soreceive
4900 };