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(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 try_again:
 555                 flags = inp->sctp_flags;
 556                 if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
 557                     (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
 558 #ifdef SCTP_LOG_CLOSING
 559                         sctp_log_closing(inp, NULL, 15);
 560 #endif
 561                         SCTP_INP_WUNLOCK(inp);
 562                         sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
 563                             SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
 564                 } else {
 565                         flags = inp->sctp_flags;
 566                         if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
 567                                 goto try_again;
 568                         } else {
 569                                 SCTP_INP_WUNLOCK(inp);
 570                         }
 571                 }
 572                 return error;
 573         }
 574 #endif                          /* IPSEC */
 575         SCTP_INP_WUNLOCK(inp);
 576         return 0;
 577 }
 578
 579 static int
 580 sctp_bind(struct socket *so, struct sockaddr *addr, struct thread *p)
 581 {
 582         struct sctp_inpcb *inp = NULL;
 583         int error;
 584
 585 #ifdef INET6
 586         if (addr && addr->sa_family != AF_INET) {
 587                 /* must be a v4 address! */
 588                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 589                 return EINVAL;
 590         }
 591 #endif                          /* INET6 */
 592         if (addr && (addr->sa_len != sizeof(struct sockaddr_in))) {
 593                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 594                 return EINVAL;
 595         }
 596         inp = (struct sctp_inpcb *)so->so_pcb;
 597         if (inp == 0) {
 598                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 599                 return EINVAL;
 600         }
 601         error = sctp_inpcb_bind(so, addr, NULL, p);
 602         return error;
 603 }
 604
 605 void
 606 sctp_close(struct socket *so)
 607 {
 608         struct sctp_inpcb *inp;
 609         uint32_t flags;
 610
 611         inp = (struct sctp_inpcb *)so->so_pcb;
 612         if (inp == 0)
 613                 return;
 614
 615         /*
 616          * Inform all the lower layer assoc that we are done.
 617          */
 618 sctp_must_try_again:
 619         flags = inp->sctp_flags;
 620 #ifdef SCTP_LOG_CLOSING
 621         sctp_log_closing(inp, NULL, 17);
 622 #endif
 623         if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
 624             (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
 625                 if (((so->so_options & SO_LINGER) && (so->so_linger == 0)) ||
 626                     (so->so_rcv.sb_cc > 0)) {
 627 #ifdef SCTP_LOG_CLOSING
 628                         sctp_log_closing(inp, NULL, 13);
 629 #endif
 630                         sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
 631                             SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
 632                 } else {
 633 #ifdef SCTP_LOG_CLOSING
 634                         sctp_log_closing(inp, NULL, 14);
 635 #endif
 636                         sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
 637                             SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
 638                 }
 639                 /*
 640                  * The socket is now detached, no matter what the state of
 641                  * the SCTP association.
 642                  */
 643                 SOCK_LOCK(so);
 644                 SCTP_SB_CLEAR(so->so_snd);
 645                 /*
 646                  * same for the rcv ones, they are only here for the
 647                  * accounting/select.
 648                  */
 649                 SCTP_SB_CLEAR(so->so_rcv);
 650
 651                 /* Now null out the reference, we are completely detached. */
 652                 so->so_pcb = NULL;
 653                 SOCK_UNLOCK(so);
 654         } else {
 655                 flags = inp->sctp_flags;
 656                 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
 657                         goto sctp_must_try_again;
 658                 }
 659         }
 660         return;
 661 }
 662
 663
 664 int
 665 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
 666     struct mbuf *control, struct thread *p);
 667
 668
 669 int
 670 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
 671     struct mbuf *control, struct thread *p)
 672 {
 673         struct sctp_inpcb *inp;
 674         int error;
 675
 676         inp = (struct sctp_inpcb *)so->so_pcb;
 677         if (inp == 0) {
 678                 if (control) {
 679                         sctp_m_freem(control);
 680                         control = NULL;
 681                 }
 682                 SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 683                 sctp_m_freem(m);
 684                 return EINVAL;
 685         }
 686         /* Got to have an to address if we are NOT a connected socket */
 687         if ((addr == NULL) &&
 688             ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) ||
 689             (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE))
 690             ) {
 691                 goto connected_type;
 692         } else if (addr == NULL) {
 693                 SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EDESTADDRREQ);
 694                 error = EDESTADDRREQ;
 695                 sctp_m_freem(m);
 696                 if (control) {
 697                         sctp_m_freem(control);
 698                         control = NULL;
 699                 }
 700                 return (error);
 701         }
 702 #ifdef INET6
 703         if (addr->sa_family != AF_INET) {
 704                 /* must be a v4 address! */
 705                 SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EDESTADDRREQ);
 706                 sctp_m_freem(m);
 707                 if (control) {
 708                         sctp_m_freem(control);
 709                         control = NULL;
 710                 }
 711                 error = EDESTADDRREQ;
 712                 return EDESTADDRREQ;
 713         }
 714 #endif                          /* INET6 */
 715 connected_type:
 716         /* now what about control */
 717         if (control) {
 718                 if (inp->control) {
 719                         SCTP_PRINTF("huh? control set?\n");
 720                         sctp_m_freem(inp->control);
 721                         inp->control = NULL;
 722                 }
 723                 inp->control = control;
 724         }
 725         /* Place the data */
 726         if (inp->pkt) {
 727                 SCTP_BUF_NEXT(inp->pkt_last) = m;
 728                 inp->pkt_last = m;
 729         } else {
 730                 inp->pkt_last = inp->pkt = m;
 731         }
 732         if (
 733         /* FreeBSD uses a flag passed */
 734             ((flags & PRUS_MORETOCOME) == 0)
 735             ) {
 736                 /*
 737                  * note with the current version this code will only be used
 738                  * by OpenBSD-- NetBSD, FreeBSD, and MacOS have methods for
 739                  * re-defining sosend to use the sctp_sosend. One can
 740                  * optionally switch back to this code (by changing back the
 741                  * definitions) but this is not advisable. This code is used
 742                  * by FreeBSD when sending a file with sendfile() though.
 743                  */
 744                 int ret;
 745
 746                 ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags);
 747                 inp->pkt = NULL;
 748                 inp->control = NULL;
 749                 return (ret);
 750         } else {
 751                 return (0);
 752         }
 753 }
 754
 755 int
 756 sctp_disconnect(struct socket *so)
 757 {
 758         struct sctp_inpcb *inp;
 759
 760         inp = (struct sctp_inpcb *)so->so_pcb;
 761         if (inp == NULL) {
 762                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
 763                 return (ENOTCONN);
 764         }
 765         SCTP_INP_RLOCK(inp);
 766         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
 767             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
 768                 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
 769                         /* No connection */
 770                         SCTP_INP_RUNLOCK(inp);
 771                         return (0);
 772                 } else {
 773                         struct sctp_association *asoc;
 774                         struct sctp_tcb *stcb;
 775
 776                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
 777                         if (stcb == NULL) {
 778                                 SCTP_INP_RUNLOCK(inp);
 779                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 780                                 return (EINVAL);
 781                         }
 782                         SCTP_TCB_LOCK(stcb);
 783                         asoc = &stcb->asoc;
 784                         if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
 785                                 /* We are about to be freed, out of here */
 786                                 SCTP_TCB_UNLOCK(stcb);
 787                                 SCTP_INP_RUNLOCK(inp);
 788                                 return (0);
 789                         }
 790                         if (((so->so_options & SO_LINGER) &&
 791                             (so->so_linger == 0)) ||
 792                             (so->so_rcv.sb_cc > 0)) {
 793                                 if (SCTP_GET_STATE(asoc) !=
 794                                     SCTP_STATE_COOKIE_WAIT) {
 795                                         /* Left with Data unread */
 796                                         struct mbuf *err;
 797
 798                                         err = sctp_get_mbuf_for_msg(sizeof(struct sctp_paramhdr), 0, M_DONTWAIT, 1, MT_DATA);
 799                                         if (err) {
 800                                                 /*
 801                                                  * Fill in the user
 802                                                  * initiated abort
 803                                                  */
 804                                                 struct sctp_paramhdr *ph;
 805
 806                                                 ph = mtod(err, struct sctp_paramhdr *);
 807                                                 SCTP_BUF_LEN(err) = sizeof(struct sctp_paramhdr);
 808                                                 ph->param_type = htons(SCTP_CAUSE_USER_INITIATED_ABT);
 809                                                 ph->param_length = htons(SCTP_BUF_LEN(err));
 810                                         }
 811 #if defined(SCTP_PANIC_ON_ABORT)
 812                                         panic("disconnect does an abort");
 813 #endif
 814                                         sctp_send_abort_tcb(stcb, err, SCTP_SO_LOCKED);
 815                                         SCTP_STAT_INCR_COUNTER32(sctps_aborted);
 816                                 }
 817                                 SCTP_INP_RUNLOCK(inp);
 818                                 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
 819                                     (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 820                                         SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 821                                 }
 822                                 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_3);
 823                                 /* No unlock tcb assoc is gone */
 824                                 return (0);
 825                         }
 826                         if (TAILQ_EMPTY(&asoc->send_queue) &&
 827                             TAILQ_EMPTY(&asoc->sent_queue) &&
 828                             (asoc->stream_queue_cnt == 0)) {
 829                                 /* there is nothing queued to send, so done */
 830                                 if (asoc->locked_on_sending) {
 831                                         goto abort_anyway;
 832                                 }
 833                                 if ((SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
 834                                     (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
 835                                         /* only send SHUTDOWN 1st time thru */
 836                                         sctp_stop_timers_for_shutdown(stcb);
 837                                         sctp_send_shutdown(stcb,
 838                                             stcb->asoc.primary_destination);
 839                                         sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_LOCKED);
 840                                         if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
 841                                             (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 842                                                 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 843                                         }
 844                                         SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT);
 845                                         SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING);
 846                                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN,
 847                                             stcb->sctp_ep, stcb,
 848                                             asoc->primary_destination);
 849                                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD,
 850                                             stcb->sctp_ep, stcb,
 851                                             asoc->primary_destination);
 852                                 }
 853                         } else {
 854                                 /*
 855                                  * we still got (or just got) data to send,
 856                                  * so set SHUTDOWN_PENDING
 857                                  */
 858                                 /*
 859                                  * XXX sockets draft says that SCTP_EOF
 860                                  * should be sent with no data. currently,
 861                                  * we will allow user data to be sent first
 862                                  * and move to SHUTDOWN-PENDING
 863                                  */
 864                                 asoc->state |= SCTP_STATE_SHUTDOWN_PENDING;
 865                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb,
 866                                     asoc->primary_destination);
 867                                 if (asoc->locked_on_sending) {
 868                                         /* Locked to send out the data */
 869                                         struct sctp_stream_queue_pending *sp;
 870
 871                                         sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead);
 872                                         if (sp == NULL) {
 873                                                 SCTP_PRINTF("Error, sp is NULL, locked on sending is non-null strm:%d\n",
 874                                                     asoc->locked_on_sending->stream_no);
 875                                         } else {
 876                                                 if ((sp->length == 0) && (sp->msg_is_complete == 0))
 877                                                         asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT;
 878                                         }
 879                                 }
 880                                 if (TAILQ_EMPTY(&asoc->send_queue) &&
 881                                     TAILQ_EMPTY(&asoc->sent_queue) &&
 882                                     (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
 883                                         struct mbuf *op_err;
 884
 885                         abort_anyway:
 886                                         op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
 887                                             0, M_DONTWAIT, 1, MT_DATA);
 888                                         if (op_err) {
 889                                                 /*
 890                                                  * Fill in the user
 891                                                  * initiated abort
 892                                                  */
 893                                                 struct sctp_paramhdr *ph;
 894                                                 uint32_t *ippp;
 895
 896                                                 SCTP_BUF_LEN(op_err) =
 897                                                     (sizeof(struct sctp_paramhdr) + sizeof(uint32_t));
 898                                                 ph = mtod(op_err,
 899                                                     struct sctp_paramhdr *);
 900                                                 ph->param_type = htons(
 901                                                     SCTP_CAUSE_USER_INITIATED_ABT);
 902                                                 ph->param_length = htons(SCTP_BUF_LEN(op_err));
 903                                                 ippp = (uint32_t *) (ph + 1);
 904                                                 *ippp = htonl(SCTP_FROM_SCTP_USRREQ + SCTP_LOC_4);
 905                                         }
 906 #if defined(SCTP_PANIC_ON_ABORT)
 907                                         panic("disconnect does an abort");
 908 #endif
 909
 910                                         stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_USRREQ + SCTP_LOC_4;
 911                                         sctp_send_abort_tcb(stcb, op_err, SCTP_SO_LOCKED);
 912                                         SCTP_STAT_INCR_COUNTER32(sctps_aborted);
 913                                         if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
 914                                             (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 915                                                 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 916                                         }
 917                                         SCTP_INP_RUNLOCK(inp);
 918                                         (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_5);
 919                                         return (0);
 920                                 } else {
 921                                         sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
 922                                 }
 923                         }
 924                         soisdisconnecting(so);
 925                         SCTP_TCB_UNLOCK(stcb);
 926                         SCTP_INP_RUNLOCK(inp);
 927                         return (0);
 928                 }
 929                 /* not reached */
 930         } else {
 931                 /* UDP model does not support this */
 932                 SCTP_INP_RUNLOCK(inp);
 933                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
 934                 return EOPNOTSUPP;
 935         }
 936 }
 937
 938 int
 939 sctp_flush(struct socket *so, int how)
 940 {
 941         /*
 942          * We will just clear out the values and let subsequent close clear
 943          * out the data, if any. Note if the user did a shutdown(SHUT_RD)
 944          * they will not be able to read the data, the socket will block
 945          * that from happening.
 946          */
 947         if ((how == PRU_FLUSH_RD) || (how == PRU_FLUSH_RDWR)) {
 948                 /*
 949                  * First make sure the sb will be happy, we don't use these
 950                  * except maybe the count
 951                  */
 952                 so->so_rcv.sb_cc = 0;
 953                 so->so_rcv.sb_mbcnt = 0;
 954                 so->so_rcv.sb_mb = NULL;
 955         }
 956         if ((how == PRU_FLUSH_WR) || (how == PRU_FLUSH_RDWR)) {
 957                 /*
 958                  * First make sure the sb will be happy, we don't use these
 959                  * except maybe the count
 960                  */
 961                 so->so_snd.sb_cc = 0;
 962                 so->so_snd.sb_mbcnt = 0;
 963                 so->so_snd.sb_mb = NULL;
 964
 965         }
 966         return (0);
 967 }
 968
 969 int
 970 sctp_shutdown(struct socket *so)
 971 {
 972         struct sctp_inpcb *inp;
 973
 974         inp = (struct sctp_inpcb *)so->so_pcb;
 975         if (inp == 0) {
 976                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 977                 return EINVAL;
 978         }
 979         SCTP_INP_RLOCK(inp);
 980         /* For UDP model this is a invalid call */
 981         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
 982                 /* Restore the flags that the soshutdown took away. */
 983                 SOCKBUF_LOCK(&so->so_rcv);
 984                 so->so_rcv.sb_state &= ~SBS_CANTRCVMORE;
 985                 SOCKBUF_UNLOCK(&so->so_rcv);
 986                 /* This proc will wakeup for read and do nothing (I hope) */
 987                 SCTP_INP_RUNLOCK(inp);
 988                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
 989                 return (EOPNOTSUPP);
 990         }
 991         /*
 992          * Ok if we reach here its the TCP model and it is either a SHUT_WR
 993          * or SHUT_RDWR. This means we put the shutdown flag against it.
 994          */
 995         {
 996                 struct sctp_tcb *stcb;
 997                 struct sctp_association *asoc;
 998
 999                 if ((so->so_state &
1000                     (SS_ISCONNECTED | SS_ISCONNECTING | SS_ISDISCONNECTING)) == 0) {
1001                         SCTP_INP_RUNLOCK(inp);
1002                         return (ENOTCONN);
1003                 }
1004                 socantsendmore(so);
1005
1006                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1007                 if (stcb == NULL) {
1008                         /*
1009                          * Ok we hit the case that the shutdown call was
1010                          * made after an abort or something. Nothing to do
1011                          * now.
1012                          */
1013                         SCTP_INP_RUNLOCK(inp);
1014                         return (0);
1015                 }
1016                 SCTP_TCB_LOCK(stcb);
1017                 asoc = &stcb->asoc;
1018                 if (TAILQ_EMPTY(&asoc->send_queue) &&
1019                     TAILQ_EMPTY(&asoc->sent_queue) &&
1020                     (asoc->stream_queue_cnt == 0)) {
1021                         if (asoc->locked_on_sending) {
1022                                 goto abort_anyway;
1023                         }
1024                         /* there is nothing queued to send, so I'm done... */
1025                         if (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) {
1026                                 /* only send SHUTDOWN the first time through */
1027                                 sctp_stop_timers_for_shutdown(stcb);
1028                                 sctp_send_shutdown(stcb,
1029                                     stcb->asoc.primary_destination);
1030                                 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_LOCKED);
1031                                 if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
1032                                     (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
1033                                         SCTP_STAT_DECR_GAUGE32(sctps_currestab);
1034                                 }
1035                                 SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT);
1036                                 SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING);
1037                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN,
1038                                     stcb->sctp_ep, stcb,
1039                                     asoc->primary_destination);
1040                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD,
1041                                     stcb->sctp_ep, stcb,
1042                                     asoc->primary_destination);
1043                         }
1044                 } else {
1045                         /*
1046                          * we still got (or just got) data to send, so set
1047                          * SHUTDOWN_PENDING
1048                          */
1049                         asoc->state |= SCTP_STATE_SHUTDOWN_PENDING;
1050                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb,
1051                             asoc->primary_destination);
1052
1053                         if (asoc->locked_on_sending) {
1054                                 /* Locked to send out the data */
1055                                 struct sctp_stream_queue_pending *sp;
1056
1057                                 sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead);
1058                                 if (sp == NULL) {
1059                                         SCTP_PRINTF("Error, sp is NULL, locked on sending is non-null strm:%d\n",
1060                                             asoc->locked_on_sending->stream_no);
1061                                 } else {
1062                                         if ((sp->length == 0) && (sp->msg_is_complete == 0)) {
1063                                                 asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT;
1064                                         }
1065                                 }
1066                         }
1067                         if (TAILQ_EMPTY(&asoc->send_queue) &&
1068                             TAILQ_EMPTY(&asoc->sent_queue) &&
1069                             (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
1070                                 struct mbuf *op_err;
1071
1072                 abort_anyway:
1073                                 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
1074                                     0, M_DONTWAIT, 1, MT_DATA);
1075                                 if (op_err) {
1076                                         /* Fill in the user initiated abort */
1077                                         struct sctp_paramhdr *ph;
1078                                         uint32_t *ippp;
1079
1080                                         SCTP_BUF_LEN(op_err) =
1081                                             sizeof(struct sctp_paramhdr) + sizeof(uint32_t);
1082                                         ph = mtod(op_err,
1083                                             struct sctp_paramhdr *);
1084                                         ph->param_type = htons(
1085                                             SCTP_CAUSE_USER_INITIATED_ABT);
1086                                         ph->param_length = htons(SCTP_BUF_LEN(op_err));
1087                                         ippp = (uint32_t *) (ph + 1);
1088                                         *ippp = htonl(SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6);
1089                                 }
1090 #if defined(SCTP_PANIC_ON_ABORT)
1091                                 panic("shutdown does an abort");
1092 #endif
1093                                 stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6;
1094                                 sctp_abort_an_association(stcb->sctp_ep, stcb,
1095                                     SCTP_RESPONSE_TO_USER_REQ,
1096                                     op_err, SCTP_SO_LOCKED);
1097                                 goto skip_unlock;
1098                         } else {
1099                                 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
1100                         }
1101                 }
1102                 SCTP_TCB_UNLOCK(stcb);
1103         }
1104 skip_unlock:
1105         SCTP_INP_RUNLOCK(inp);
1106         return 0;
1107 }
1108
1109 /*
1110  * copies a "user" presentable address and removes embedded scope, etc.
1111  * returns 0 on success, 1 on error
1112  */
1113 static uint32_t
1114 sctp_fill_user_address(struct sockaddr_storage *ss, struct sockaddr *sa)
1115 {
1116 #ifdef INET6
1117         struct sockaddr_in6 lsa6;
1118
1119         sa = (struct sockaddr *)sctp_recover_scope((struct sockaddr_in6 *)sa,
1120             &lsa6);
1121 #endif
1122         memcpy(ss, sa, sa->sa_len);
1123         return (0);
1124 }
1125
1126
1127
1128 /*
1129  * NOTE: assumes addr lock is held
1130  */
1131 static size_t
1132 sctp_fill_up_addresses_vrf(struct sctp_inpcb *inp,
1133     struct sctp_tcb *stcb,
1134     size_t limit,
1135     struct sockaddr_storage *sas,
1136     uint32_t vrf_id)
1137 {
1138         struct sctp_ifn *sctp_ifn;
1139         struct sctp_ifa *sctp_ifa;
1140         int loopback_scope, ipv4_local_scope, local_scope, site_scope;
1141         size_t actual;
1142         int ipv4_addr_legal, ipv6_addr_legal;
1143         struct sctp_vrf *vrf;
1144
1145         actual = 0;
1146         if (limit <= 0)
1147                 return (actual);
1148
1149         if (stcb) {
1150                 /* Turn on all the appropriate scope */
1151                 loopback_scope = stcb->asoc.loopback_scope;
1152                 ipv4_local_scope = stcb->asoc.ipv4_local_scope;
1153                 local_scope = stcb->asoc.local_scope;
1154                 site_scope = stcb->asoc.site_scope;
1155         } else {
1156                 /* Turn on ALL scope, since we look at the EP */
1157                 loopback_scope = ipv4_local_scope = local_scope =
1158                     site_scope = 1;
1159         }
1160         ipv4_addr_legal = ipv6_addr_legal = 0;
1161         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1162                 ipv6_addr_legal = 1;
1163                 if (SCTP_IPV6_V6ONLY(inp) == 0) {
1164                         ipv4_addr_legal = 1;
1165                 }
1166         } else {
1167                 ipv4_addr_legal = 1;
1168         }
1169         vrf = sctp_find_vrf(vrf_id);
1170         if (vrf == NULL) {
1171                 return (0);
1172         }
1173         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1174                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
1175                         if ((loopback_scope == 0) &&
1176                             SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
1177                                 /* Skip loopback if loopback_scope not set */
1178                                 continue;
1179                         }
1180                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
1181                                 if (stcb) {
1182                                         /*
1183                                          * For the BOUND-ALL case, the list
1184                                          * associated with a TCB is Always
1185                                          * considered a reverse list.. i.e.
1186                                          * it lists addresses that are NOT
1187                                          * part of the association. If this
1188                                          * is one of those we must skip it.
1189                                          */
1190                                         if (sctp_is_addr_restricted(stcb,
1191                                             sctp_ifa)) {
1192                                                 continue;
1193                                         }
1194                                 }
1195                                 switch (sctp_ifa->address.sa.sa_family) {
1196                                 case AF_INET:
1197                                         if (ipv4_addr_legal) {
1198                                                 struct sockaddr_in *sin;
1199
1200                                                 sin = (struct sockaddr_in *)&sctp_ifa->address.sa;
1201                                                 if (sin->sin_addr.s_addr == 0) {
1202                                                         /*
1203                                                          * we skip
1204                                                          * unspecifed
1205                                                          * addresses
1206                                                          */
1207                                                         continue;
1208                                                 }
1209                                                 if ((ipv4_local_scope == 0) &&
1210                                                     (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
1211                                                         continue;
1212                                                 }
1213 #ifdef INET6
1214                                                 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
1215                                                         in6_sin_2_v4mapsin6(sin, (struct sockaddr_in6 *)sas);
1216                                                         ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
1217                                                         sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(struct sockaddr_in6));
1218                                                         actual += sizeof(struct sockaddr_in6);
1219                                                 } else {
1220 #endif
1221                                                         memcpy(sas, sin, sizeof(*sin));
1222                                                         ((struct sockaddr_in *)sas)->sin_port = inp->sctp_lport;
1223                                                         sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(*sin));
1224                                                         actual += sizeof(*sin);
1225 #ifdef INET6
1226                                                 }
1227 #endif
1228                                                 if (actual >= limit) {
1229                                                         return (actual);
1230                                                 }
1231                                         } else {
1232                                                 continue;
1233                                         }
1234                                         break;
1235 #ifdef INET6
1236                                 case AF_INET6:
1237                                         if (ipv6_addr_legal) {
1238                                                 struct sockaddr_in6 *sin6;
1239
1240                                                 sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa;
1241                                                 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1242                                                         /*
1243                                                          * we skip
1244                                                          * unspecifed
1245                                                          * addresses
1246                                                          */
1247                                                         continue;
1248                                                 }
1249                                                 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
1250                                                         if (local_scope == 0)
1251                                                                 continue;
1252                                                         if (sin6->sin6_scope_id == 0) {
1253                                                                 if (sa6_recoverscope(sin6) != 0)
1254                                                                         /*
1255                                                                          *
1256                                                                          * bad
1257                                                                          *
1258                                                                          * li
1259                                                                          * nk
1260                                                                          *
1261                                                                          * loc
1262                                                                          * al
1263                                                                          *
1264                                                                          * add
1265                                                                          * re
1266                                                                          * ss
1267                                                                          * */
1268                                                                         continue;
1269                                                         }
1270                                                 }
1271                                                 if ((site_scope == 0) &&
1272                                                     (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
1273                                                         continue;
1274                                                 }
1275                                                 memcpy(sas, sin6, sizeof(*sin6));
1276                                                 ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
1277                                                 sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(*sin6));
1278                                                 actual += sizeof(*sin6);
1279                                                 if (actual >= limit) {
1280                                                         return (actual);
1281                                                 }
1282                                         } else {
1283                                                 continue;
1284                                         }
1285                                         break;
1286 #endif
1287                                 default:
1288                                         /* TSNH */
1289                                         break;
1290                                 }
1291                         }
1292                 }
1293         } else {
1294                 struct sctp_laddr *laddr;
1295
1296                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1297                         if (stcb) {
1298                                 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
1299                                         continue;
1300                                 }
1301                         }
1302                         if (sctp_fill_user_address(sas, &laddr->ifa->address.sa))
1303                                 continue;
1304
1305                         ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
1306                         sas = (struct sockaddr_storage *)((caddr_t)sas +
1307                             laddr->ifa->address.sa.sa_len);
1308                         actual += laddr->ifa->address.sa.sa_len;
1309                         if (actual >= limit) {
1310                                 return (actual);
1311                         }
1312                 }
1313         }
1314         return (actual);
1315 }
1316
1317 static size_t
1318 sctp_fill_up_addresses(struct sctp_inpcb *inp,
1319     struct sctp_tcb *stcb,
1320     size_t limit,
1321     struct sockaddr_storage *sas)
1322 {
1323         size_t size = 0;
1324
1325         SCTP_IPI_ADDR_RLOCK();
1326         /* fill up addresses for the endpoint's default vrf */
1327         size = sctp_fill_up_addresses_vrf(inp, stcb, limit, sas,
1328             inp->def_vrf_id);
1329         SCTP_IPI_ADDR_RUNLOCK();
1330         return (size);
1331 }
1332
1333 /*
1334  * NOTE: assumes addr lock is held
1335  */
1336 static int
1337 sctp_count_max_addresses_vrf(struct sctp_inpcb *inp, uint32_t vrf_id)
1338 {
1339         int cnt = 0;
1340         struct sctp_vrf *vrf = NULL;
1341
1342         /*
1343          * In both sub-set bound an bound_all cases we return the MAXIMUM
1344          * number of addresses that you COULD get. In reality the sub-set
1345          * bound may have an exclusion list for a given TCB OR in the
1346          * bound-all case a TCB may NOT include the loopback or other
1347          * addresses as well.
1348          */
1349         vrf = sctp_find_vrf(vrf_id);
1350         if (vrf == NULL) {
1351                 return (0);
1352         }
1353         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1354                 struct sctp_ifn *sctp_ifn;
1355                 struct sctp_ifa *sctp_ifa;
1356
1357                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
1358                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
1359                                 /* Count them if they are the right type */
1360                                 if (sctp_ifa->address.sa.sa_family == AF_INET) {
1361                                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4))
1362                                                 cnt += sizeof(struct sockaddr_in6);
1363                                         else
1364                                                 cnt += sizeof(struct sockaddr_in);
1365
1366                                 } else if (sctp_ifa->address.sa.sa_family == AF_INET6)
1367                                         cnt += sizeof(struct sockaddr_in6);
1368                         }
1369                 }
1370         } else {
1371                 struct sctp_laddr *laddr;
1372
1373                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1374                         if (laddr->ifa->address.sa.sa_family == AF_INET) {
1375                                 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4))
1376                                         cnt += sizeof(struct sockaddr_in6);
1377                                 else
1378                                         cnt += sizeof(struct sockaddr_in);
1379
1380                         } else if (laddr->ifa->address.sa.sa_family == AF_INET6)
1381                                 cnt += sizeof(struct sockaddr_in6);
1382                 }
1383         }
1384         return (cnt);
1385 }
1386
1387 static int
1388 sctp_count_max_addresses(struct sctp_inpcb *inp)
1389 {
1390         int cnt = 0;
1391
1392         SCTP_IPI_ADDR_RLOCK();
1393         /* count addresses for the endpoint's default VRF */
1394         cnt = sctp_count_max_addresses_vrf(inp, inp->def_vrf_id);
1395         SCTP_IPI_ADDR_RUNLOCK();
1396         return (cnt);
1397 }
1398
1399 static int
1400 sctp_do_connect_x(struct socket *so, struct sctp_inpcb *inp, void *optval,
1401     size_t optsize, void *p, int delay)
1402 {
1403         int error = 0;
1404         int creat_lock_on = 0;
1405         struct sctp_tcb *stcb = NULL;
1406         struct sockaddr *sa;
1407         int num_v6 = 0, num_v4 = 0, *totaddrp, totaddr;
1408         int added = 0;
1409         uint32_t vrf_id;
1410         int bad_addresses = 0;
1411         sctp_assoc_t *a_id;
1412
1413         SCTPDBG(SCTP_DEBUG_PCB1, "Connectx called\n");
1414
1415         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
1416             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
1417                 /* We are already connected AND the TCP model */
1418                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
1419                 return (EADDRINUSE);
1420         }
1421         if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
1422             (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE))) {
1423                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1424                 return (EINVAL);
1425         }
1426         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
1427                 SCTP_INP_RLOCK(inp);
1428                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1429                 SCTP_INP_RUNLOCK(inp);
1430         }
1431         if (stcb) {
1432                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
1433                 return (EALREADY);
1434         }
1435         SCTP_INP_INCR_REF(inp);
1436         SCTP_ASOC_CREATE_LOCK(inp);
1437         creat_lock_on = 1;
1438         if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
1439             (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
1440                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EFAULT);
1441                 error = EFAULT;
1442                 goto out_now;
1443         }
1444         totaddrp = (int *)optval;
1445         totaddr = *totaddrp;
1446         sa = (struct sockaddr *)(totaddrp + 1);
1447         stcb = sctp_connectx_helper_find(inp, sa, &totaddr, &num_v4, &num_v6, &error, (optsize - sizeof(int)), &bad_addresses);
1448         if ((stcb != NULL) || bad_addresses) {
1449                 /* Already have or am bring up an association */
1450                 SCTP_ASOC_CREATE_UNLOCK(inp);
1451                 creat_lock_on = 0;
1452                 if (stcb)
1453                         SCTP_TCB_UNLOCK(stcb);
1454                 if (bad_addresses == 0) {
1455                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
1456                         error = EALREADY;
1457                 }
1458                 goto out_now;
1459         }
1460 #ifdef INET6
1461         if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) &&
1462             (num_v6 > 0)) {
1463                 error = EINVAL;
1464                 goto out_now;
1465         }
1466         if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1467             (num_v4 > 0)) {
1468                 struct in6pcb *inp6;
1469
1470                 inp6 = (struct in6pcb *)inp;
1471                 if (SCTP_IPV6_V6ONLY(inp6)) {
1472                         /*
1473                          * if IPV6_V6ONLY flag, ignore connections destined
1474                          * to a v4 addr or v4-mapped addr
1475                          */
1476                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1477                         error = EINVAL;
1478                         goto out_now;
1479                 }
1480         }
1481 #endif                          /* INET6 */
1482         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
1483             SCTP_PCB_FLAGS_UNBOUND) {
1484                 /* Bind a ephemeral port */
1485                 error = sctp_inpcb_bind(so, NULL, NULL, p);
1486                 if (error) {
1487                         goto out_now;
1488                 }
1489         }
1490         /* FIX ME: do we want to pass in a vrf on the connect call? */
1491         vrf_id = inp->def_vrf_id;
1492
1493
1494         /* We are GOOD to go */
1495         stcb = sctp_aloc_assoc(inp, sa, &error, 0, vrf_id,
1496             (struct thread *)p
1497             );
1498         if (stcb == NULL) {
1499                 /* Gak! no memory */
1500                 goto out_now;
1501         }
1502         SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_COOKIE_WAIT);
1503         /* move to second address */
1504         if (sa->sa_family == AF_INET)
1505                 sa = (struct sockaddr *)((caddr_t)sa + sizeof(struct sockaddr_in));
1506         else
1507                 sa = (struct sockaddr *)((caddr_t)sa + sizeof(struct sockaddr_in6));
1508
1509         error = 0;
1510         added = sctp_connectx_helper_add(stcb, sa, (totaddr - 1), &error);
1511         /* Fill in the return id */
1512         if (error) {
1513                 (void)sctp_free_assoc(inp, stcb, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6);
1514                 goto out_now;
1515         }
1516         a_id = (sctp_assoc_t *) optval;
1517         *a_id = sctp_get_associd(stcb);
1518
1519         /* initialize authentication parameters for the assoc */
1520         sctp_initialize_auth_params(inp, stcb);
1521
1522         if (delay) {
1523                 /* doing delayed connection */
1524                 stcb->asoc.delayed_connection = 1;
1525                 sctp_timer_start(SCTP_TIMER_TYPE_INIT, inp, stcb, stcb->asoc.primary_destination);
1526         } else {
1527                 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
1528                 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
1529         }
1530         SCTP_TCB_UNLOCK(stcb);
1531         if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
1532                 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
1533                 /* Set the connected flag so we can queue data */
1534                 soisconnecting(so);
1535         }
1536 out_now:
1537         if (creat_lock_on) {
1538                 SCTP_ASOC_CREATE_UNLOCK(inp);
1539         }
1540         SCTP_INP_DECR_REF(inp);
1541         return error;
1542 }
1543
1544 #define SCTP_FIND_STCB(inp, stcb, assoc_id) { \
1545         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||\
1546             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { \
1547                 SCTP_INP_RLOCK(inp); \
1548                 stcb = LIST_FIRST(&inp->sctp_asoc_list); \
1549                 if (stcb) { \
1550                         SCTP_TCB_LOCK(stcb); \
1551                 } \
1552                 SCTP_INP_RUNLOCK(inp); \
1553         } else if (assoc_id != 0) { \
1554                 stcb = sctp_findassociation_ep_asocid(inp, assoc_id, 1); \
1555                 if (stcb == NULL) { \
1556                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT); \
1557                         error = ENOENT; \
1558                         break; \
1559                 } \
1560         } else { \
1561                 stcb = NULL; \
1562         } \
1563   }
1564
1565
1566 #define SCTP_CHECK_AND_CAST(destp, srcp, type, size)  {\
1567         if (size < sizeof(type)) { \
1568                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); \
1569                 error = EINVAL; \
1570                 break; \
1571         } else { \
1572                 destp = (type *)srcp; \
1573         } \
1574       }
1575
1576 static int
1577 sctp_getopt(struct socket *so, int optname, void *optval, size_t *optsize,
1578     void *p)
1579 {
1580         struct sctp_inpcb *inp = NULL;
1581         int error, val = 0;
1582         struct sctp_tcb *stcb = NULL;
1583
1584         if (optval == NULL) {
1585                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1586                 return (EINVAL);
1587         }
1588         inp = (struct sctp_inpcb *)so->so_pcb;
1589         if (inp == 0) {
1590                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1591                 return EINVAL;
1592         }
1593         error = 0;
1594
1595         switch (optname) {
1596         case SCTP_NODELAY:
1597         case SCTP_AUTOCLOSE:
1598         case SCTP_EXPLICIT_EOR:
1599         case SCTP_AUTO_ASCONF:
1600         case SCTP_DISABLE_FRAGMENTS:
1601         case SCTP_I_WANT_MAPPED_V4_ADDR:
1602         case SCTP_USE_EXT_RCVINFO:
1603                 SCTP_INP_RLOCK(inp);
1604                 switch (optname) {
1605                 case SCTP_DISABLE_FRAGMENTS:
1606                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NO_FRAGMENT);
1607                         break;
1608                 case SCTP_I_WANT_MAPPED_V4_ADDR:
1609                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4);
1610                         break;
1611                 case SCTP_AUTO_ASCONF:
1612                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1613                                 /* only valid for bound all sockets */
1614                                 val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
1615                         } else {
1616                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1617                                 error = EINVAL;
1618                                 goto flags_out;
1619                         }
1620                         break;
1621                 case SCTP_EXPLICIT_EOR:
1622                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
1623                         break;
1624                 case SCTP_NODELAY:
1625                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NODELAY);
1626                         break;
1627                 case SCTP_USE_EXT_RCVINFO:
1628                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO);
1629                         break;
1630                 case SCTP_AUTOCLOSE:
1631                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTOCLOSE))
1632                                 val = TICKS_TO_SEC(inp->sctp_ep.auto_close_time);
1633                         else
1634                                 val = 0;
1635                         break;
1636
1637                 default:
1638                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
1639                         error = ENOPROTOOPT;
1640                 }               /* end switch (sopt->sopt_name) */
1641                 if (optname != SCTP_AUTOCLOSE) {
1642                         /* make it an "on/off" value */
1643                         val = (val != 0);
1644                 }
1645                 if (*optsize < sizeof(val)) {
1646                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1647                         error = EINVAL;
1648                 }
1649 flags_out:
1650                 SCTP_INP_RUNLOCK(inp);
1651                 if (error == 0) {
1652                         /* return the option value */
1653                         *(int *)optval = val;
1654                         *optsize = sizeof(val);
1655                 }
1656                 break;
1657         case SCTP_GET_PACKET_LOG:
1658                 {
1659 #ifdef  SCTP_PACKET_LOGGING
1660                         uint8_t *target;
1661                         int ret;
1662
1663                         SCTP_CHECK_AND_CAST(target, optval, uint8_t, *optsize);
1664                         ret = sctp_copy_out_packet_log(target, (int)*optsize);
1665                         *optsize = ret;
1666 #else
1667                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
1668                         error = EOPNOTSUPP;
1669 #endif
1670                         break;
1671                 }
1672         case SCTP_REUSE_PORT:
1673                 {
1674                         uint32_t *value;
1675
1676                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE)) {
1677                                 /* Can't do this for a 1-m socket */
1678                                 error = EINVAL;
1679                                 break;
1680                         }
1681                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1682                         *value = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE);
1683                         *optsize = sizeof(uint32_t);
1684                 }
1685                 break;
1686         case SCTP_PARTIAL_DELIVERY_POINT:
1687                 {
1688                         uint32_t *value;
1689
1690                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1691                         *value = inp->partial_delivery_point;
1692                         *optsize = sizeof(uint32_t);
1693                 }
1694                 break;
1695         case SCTP_FRAGMENT_INTERLEAVE:
1696                 {
1697                         uint32_t *value;
1698
1699                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1700                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) {
1701                                 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) {
1702                                         *value = SCTP_FRAG_LEVEL_2;
1703                                 } else {
1704                                         *value = SCTP_FRAG_LEVEL_1;
1705                                 }
1706                         } else {
1707                                 *value = SCTP_FRAG_LEVEL_0;
1708                         }
1709                         *optsize = sizeof(uint32_t);
1710                 }
1711                 break;
1712         case SCTP_CMT_ON_OFF:
1713                 {
1714                         struct sctp_assoc_value *av;
1715
1716                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1717                         if (SCTP_BASE_SYSCTL(sctp_cmt_on_off)) {
1718                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1719                                 if (stcb) {
1720                                         av->assoc_value = stcb->asoc.sctp_cmt_on_off;
1721                                         SCTP_TCB_UNLOCK(stcb);
1722
1723                                 } else {
1724                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
1725                                         error = ENOTCONN;
1726                                 }
1727                         } else {
1728                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
1729                                 error = ENOPROTOOPT;
1730                         }
1731                         *optsize = sizeof(*av);
1732                 }
1733                 break;
1734                 /* EY - set socket option for nr_sacks  */
1735         case SCTP_NR_SACK_ON_OFF:
1736                 {
1737                         struct sctp_assoc_value *av;
1738
1739                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1740                         if (SCTP_BASE_SYSCTL(sctp_nr_sack_on_off)) {
1741                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1742                                 if (stcb) {
1743                                         av->assoc_value = stcb->asoc.sctp_nr_sack_on_off;
1744                                         SCTP_TCB_UNLOCK(stcb);
1745
1746                                 } else {
1747                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
1748                                         error = ENOTCONN;
1749                                 }
1750                         } else {
1751                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
1752                                 error = ENOPROTOOPT;
1753                         }
1754                         *optsize = sizeof(*av);
1755                 }
1756                 break;
1757                 /* JRS - Get socket option for pluggable congestion control */
1758         case SCTP_PLUGGABLE_CC:
1759                 {
1760                         struct sctp_assoc_value *av;
1761
1762                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1763                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1764                         if (stcb) {
1765                                 av->assoc_value = stcb->asoc.congestion_control_module;
1766                                 SCTP_TCB_UNLOCK(stcb);
1767                         } else {
1768                                 av->assoc_value = inp->sctp_ep.sctp_default_cc_module;
1769                         }
1770                         *optsize = sizeof(*av);
1771                 }
1772                 break;
1773         case SCTP_GET_ADDR_LEN:
1774                 {
1775                         struct sctp_assoc_value *av;
1776
1777                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1778                         error = EINVAL;
1779 #ifdef INET
1780                         if (av->assoc_value == AF_INET) {
1781                                 av->assoc_value = sizeof(struct sockaddr_in);
1782                                 error = 0;
1783                         }
1784 #endif
1785 #ifdef INET6
1786                         if (av->assoc_value == AF_INET6) {
1787                                 av->assoc_value = sizeof(struct sockaddr_in6);
1788                                 error = 0;
1789                         }
1790 #endif
1791                         if (error) {
1792                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
1793                         }
1794                         *optsize = sizeof(*av);
1795                 }
1796                 break;
1797         case SCTP_GET_ASSOC_NUMBER:
1798                 {
1799                         uint32_t *value, cnt;
1800
1801                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1802                         cnt = 0;
1803                         SCTP_INP_RLOCK(inp);
1804                         LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
1805                                 cnt++;
1806                         }
1807                         SCTP_INP_RUNLOCK(inp);
1808                         *value = cnt;
1809                         *optsize = sizeof(uint32_t);
1810                 }
1811                 break;
1812
1813         case SCTP_GET_ASSOC_ID_LIST:
1814                 {
1815                         struct sctp_assoc_ids *ids;
1816                         unsigned int at, limit;
1817
1818                         SCTP_CHECK_AND_CAST(ids, optval, struct sctp_assoc_ids, *optsize);
1819                         at = 0;
1820                         limit = (*optsize - sizeof(uint32_t)) / sizeof(sctp_assoc_t);
1821                         SCTP_INP_RLOCK(inp);
1822                         LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
1823                                 if (at < limit) {
1824                                         ids->gaids_assoc_id[at++] = sctp_get_associd(stcb);
1825                                 } else {
1826                                         error = EINVAL;
1827                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
1828                                         break;
1829                                 }
1830                         }
1831                         SCTP_INP_RUNLOCK(inp);
1832                         ids->gaids_number_of_ids = at;
1833                         *optsize = ((at * sizeof(sctp_assoc_t)) + sizeof(uint32_t));
1834                 }
1835                 break;
1836         case SCTP_CONTEXT:
1837                 {
1838                         struct sctp_assoc_value *av;
1839
1840                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1841                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1842
1843                         if (stcb) {
1844                                 av->assoc_value = stcb->asoc.context;
1845                                 SCTP_TCB_UNLOCK(stcb);
1846                         } else {
1847                                 SCTP_INP_RLOCK(inp);
1848                                 av->assoc_value = inp->sctp_context;
1849                                 SCTP_INP_RUNLOCK(inp);
1850                         }
1851                         *optsize = sizeof(*av);
1852                 }
1853                 break;
1854         case SCTP_VRF_ID:
1855                 {
1856                         uint32_t *default_vrfid;
1857
1858                         SCTP_CHECK_AND_CAST(default_vrfid, optval, uint32_t, *optsize);
1859                         *default_vrfid = inp->def_vrf_id;
1860                         break;
1861                 }
1862         case SCTP_GET_ASOC_VRF:
1863                 {
1864                         struct sctp_assoc_value *id;
1865
1866                         SCTP_CHECK_AND_CAST(id, optval, struct sctp_assoc_value, *optsize);
1867                         SCTP_FIND_STCB(inp, stcb, id->assoc_id);
1868                         if (stcb == NULL) {
1869                                 error = EINVAL;
1870                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
1871                                 break;
1872                         }
1873                         id->assoc_value = stcb->asoc.vrf_id;
1874                         break;
1875                 }
1876         case SCTP_GET_VRF_IDS:
1877                 {
1878                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
1879                         error = EOPNOTSUPP;
1880                         break;
1881                 }
1882         case SCTP_GET_NONCE_VALUES:
1883                 {
1884                         struct sctp_get_nonce_values *gnv;
1885
1886                         SCTP_CHECK_AND_CAST(gnv, optval, struct sctp_get_nonce_values, *optsize);
1887                         SCTP_FIND_STCB(inp, stcb, gnv->gn_assoc_id);
1888
1889                         if (stcb) {
1890                                 gnv->gn_peers_tag = stcb->asoc.peer_vtag;
1891                                 gnv->gn_local_tag = stcb->asoc.my_vtag;
1892                                 SCTP_TCB_UNLOCK(stcb);
1893                         } else {
1894                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
1895                                 error = ENOTCONN;
1896                         }
1897                         *optsize = sizeof(*gnv);
1898                 }
1899                 break;
1900         case SCTP_DELAYED_SACK:
1901                 {
1902                         struct sctp_sack_info *sack;
1903
1904                         SCTP_CHECK_AND_CAST(sack, optval, struct sctp_sack_info, *optsize);
1905                         SCTP_FIND_STCB(inp, stcb, sack->sack_assoc_id);
1906                         if (stcb) {
1907                                 sack->sack_delay = stcb->asoc.delayed_ack;
1908                                 sack->sack_freq = stcb->asoc.sack_freq;
1909                                 SCTP_TCB_UNLOCK(stcb);
1910                         } else {
1911                                 SCTP_INP_RLOCK(inp);
1912                                 sack->sack_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
1913                                 sack->sack_freq = inp->sctp_ep.sctp_sack_freq;
1914                                 SCTP_INP_RUNLOCK(inp);
1915                         }
1916                         *optsize = sizeof(*sack);
1917                 }
1918                 break;
1919
1920         case SCTP_GET_SNDBUF_USE:
1921                 {
1922                         struct sctp_sockstat *ss;
1923
1924                         SCTP_CHECK_AND_CAST(ss, optval, struct sctp_sockstat, *optsize);
1925                         SCTP_FIND_STCB(inp, stcb, ss->ss_assoc_id);
1926
1927                         if (stcb) {
1928                                 ss->ss_total_sndbuf = stcb->asoc.total_output_queue_size;
1929                                 ss->ss_total_recv_buf = (stcb->asoc.size_on_reasm_queue +
1930                                     stcb->asoc.size_on_all_streams);
1931                                 SCTP_TCB_UNLOCK(stcb);
1932                         } else {
1933                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
1934                                 error = ENOTCONN;
1935                         }
1936                         *optsize = sizeof(struct sctp_sockstat);
1937                 }
1938                 break;
1939         case SCTP_MAX_BURST:
1940                 {
1941                         uint8_t *value;
1942
1943                         SCTP_CHECK_AND_CAST(value, optval, uint8_t, *optsize);
1944
1945                         SCTP_INP_RLOCK(inp);
1946                         *value = inp->sctp_ep.max_burst;
1947                         SCTP_INP_RUNLOCK(inp);
1948                         *optsize = sizeof(uint8_t);
1949                 }
1950                 break;
1951         case SCTP_MAXSEG:
1952                 {
1953                         struct sctp_assoc_value *av;
1954                         int ovh;
1955
1956                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1957                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1958
1959                         if (stcb) {
1960                                 av->assoc_value = sctp_get_frag_point(stcb, &stcb->asoc);
1961                                 SCTP_TCB_UNLOCK(stcb);
1962                         } else {
1963                                 SCTP_INP_RLOCK(inp);
1964                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1965                                         ovh = SCTP_MED_OVERHEAD;
1966                                 } else {
1967                                         ovh = SCTP_MED_V4_OVERHEAD;
1968                                 }
1969                                 if (inp->sctp_frag_point >= SCTP_DEFAULT_MAXSEGMENT)
1970                                         av->assoc_value = 0;
1971                                 else
1972                                         av->assoc_value = inp->sctp_frag_point - ovh;
1973                                 SCTP_INP_RUNLOCK(inp);
1974                         }
1975                         *optsize = sizeof(struct sctp_assoc_value);
1976                 }
1977                 break;
1978         case SCTP_GET_STAT_LOG:
1979                 error = sctp_fill_stat_log(optval, optsize);
1980                 break;
1981         case SCTP_EVENTS:
1982                 {
1983                         struct sctp_event_subscribe *events;
1984
1985                         SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, *optsize);
1986                         memset(events, 0, sizeof(*events));
1987                         SCTP_INP_RLOCK(inp);
1988                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT))
1989                                 events->sctp_data_io_event = 1;
1990
1991                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT))
1992                                 events->sctp_association_event = 1;
1993
1994                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT))
1995                                 events->sctp_address_event = 1;
1996
1997                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT))
1998                                 events->sctp_send_failure_event = 1;
1999
2000                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR))
2001                                 events->sctp_peer_error_event = 1;
2002
2003                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT))
2004                                 events->sctp_shutdown_event = 1;
2005
2006                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT))
2007                                 events->sctp_partial_delivery_event = 1;
2008
2009                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT))
2010                                 events->sctp_adaptation_layer_event = 1;
2011
2012                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT))
2013                                 events->sctp_authentication_event = 1;
2014
2015                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_DRYEVNT))
2016                                 events->sctp_sender_dry_event = 1;
2017
2018                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT))
2019                                 events->sctp_stream_reset_event = 1;
2020                         SCTP_INP_RUNLOCK(inp);
2021                         *optsize = sizeof(struct sctp_event_subscribe);
2022                 }
2023                 break;
2024
2025         case SCTP_ADAPTATION_LAYER:
2026                 {
2027                         uint32_t *value;
2028
2029                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
2030
2031                         SCTP_INP_RLOCK(inp);
2032                         *value = inp->sctp_ep.adaptation_layer_indicator;
2033                         SCTP_INP_RUNLOCK(inp);
2034                         *optsize = sizeof(uint32_t);
2035                 }
2036                 break;
2037         case SCTP_SET_INITIAL_DBG_SEQ:
2038                 {
2039                         uint32_t *value;
2040
2041                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
2042                         SCTP_INP_RLOCK(inp);
2043                         *value = inp->sctp_ep.initial_sequence_debug;
2044                         SCTP_INP_RUNLOCK(inp);
2045                         *optsize = sizeof(uint32_t);
2046                 }
2047                 break;
2048         case SCTP_GET_LOCAL_ADDR_SIZE:
2049                 {
2050                         uint32_t *value;
2051
2052                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
2053                         SCTP_INP_RLOCK(inp);
2054                         *value = sctp_count_max_addresses(inp);
2055                         SCTP_INP_RUNLOCK(inp);
2056                         *optsize = sizeof(uint32_t);
2057                 }
2058                 break;
2059         case SCTP_GET_REMOTE_ADDR_SIZE:
2060                 {
2061                         uint32_t *value;
2062                         size_t size;
2063                         struct sctp_nets *net;
2064
2065                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
2066                         /* FIXME MT: change to sctp_assoc_value? */
2067                         SCTP_FIND_STCB(inp, stcb, (sctp_assoc_t) * value);
2068
2069                         if (stcb) {
2070                                 size = 0;
2071                                 /* Count the sizes */
2072                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2073                                         if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) ||
2074                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) {
2075                                                 size += sizeof(struct sockaddr_in6);
2076                                         } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) {
2077                                                 size += sizeof(struct sockaddr_in);
2078                                         } else {
2079                                                 /* huh */
2080                                                 break;
2081                                         }
2082                                 }
2083                                 SCTP_TCB_UNLOCK(stcb);
2084                                 *value = (uint32_t) size;
2085                         } else {
2086                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
2087                                 error = ENOTCONN;
2088                         }
2089                         *optsize = sizeof(uint32_t);
2090                 }
2091                 break;
2092         case SCTP_GET_PEER_ADDRESSES:
2093                 /*
2094                  * Get the address information, an array is passed in to
2095                  * fill up we pack it.
2096                  */
2097                 {
2098                         size_t cpsz, left;
2099                         struct sockaddr_storage *sas;
2100                         struct sctp_nets *net;
2101                         struct sctp_getaddresses *saddr;
2102
2103                         SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize);
2104                         SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id);
2105
2106                         if (stcb) {
2107                                 left = (*optsize) - sizeof(struct sctp_getaddresses);
2108                                 *optsize = sizeof(struct sctp_getaddresses);
2109                                 sas = (struct sockaddr_storage *)&saddr->addr[0];
2110
2111                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2112                                         if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) ||
2113                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) {
2114                                                 cpsz = sizeof(struct sockaddr_in6);
2115                                         } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) {
2116                                                 cpsz = sizeof(struct sockaddr_in);
2117                                         } else {
2118                                                 /* huh */
2119                                                 break;
2120                                         }
2121                                         if (left < cpsz) {
2122                                                 /* not enough room. */
2123                                                 break;
2124                                         }
2125 #ifdef INET6
2126                                         if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) &&
2127                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET)) {
2128                                                 /* Must map the address */
2129                                                 in6_sin_2_v4mapsin6((struct sockaddr_in *)&net->ro._l_addr,
2130                                                     (struct sockaddr_in6 *)sas);
2131                                         } else {
2132 #endif
2133                                                 memcpy(sas, &net->ro._l_addr, cpsz);
2134 #ifdef INET6
2135                                         }
2136 #endif
2137                                         ((struct sockaddr_in *)sas)->sin_port = stcb->rport;
2138
2139                                         sas = (struct sockaddr_storage *)((caddr_t)sas + cpsz);
2140                                         left -= cpsz;
2141                                         *optsize += cpsz;
2142                                 }
2143                                 SCTP_TCB_UNLOCK(stcb);
2144                         } else {
2145                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
2146                                 error = ENOENT;
2147                         }
2148                 }
2149                 break;
2150         case SCTP_GET_LOCAL_ADDRESSES:
2151                 {
2152                         size_t limit, actual;
2153                         struct sockaddr_storage *sas;
2154                         struct sctp_getaddresses *saddr;
2155
2156                         SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize);
2157                         SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id);
2158
2159                         sas = (struct sockaddr_storage *)&saddr->addr[0];
2160                         limit = *optsize - sizeof(sctp_assoc_t);
2161                         actual = sctp_fill_up_addresses(inp, stcb, limit, sas);
2162                         if (stcb) {
2163                                 SCTP_TCB_UNLOCK(stcb);
2164                         }
2165                         *optsize = sizeof(struct sockaddr_storage) + actual;
2166                 }
2167                 break;
2168         case SCTP_PEER_ADDR_PARAMS:
2169                 {
2170                         struct sctp_paddrparams *paddrp;
2171                         struct sctp_nets *net;
2172
2173                         SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, *optsize);
2174                         SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id);
2175
2176                         net = NULL;
2177                         if (stcb) {
2178                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address);
2179                         } else {
2180                                 /*
2181                                  * We increment here since
2182                                  * sctp_findassociation_ep_addr() wil do a
2183                                  * decrement if it finds the stcb as long as
2184                                  * the locked tcb (last argument) is NOT a
2185                                  * TCB.. aka NULL.
2186                                  */
2187                                 SCTP_INP_INCR_REF(inp);
2188                                 stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddrp->spp_address, &net, NULL, NULL);
2189                                 if (stcb == NULL) {
2190                                         SCTP_INP_DECR_REF(inp);
2191                                 }
2192                         }
2193                         if (stcb && (net == NULL)) {
2194                                 struct sockaddr *sa;
2195
2196                                 sa = (struct sockaddr *)&paddrp->spp_address;
2197                                 if (sa->sa_family == AF_INET) {
2198                                         struct sockaddr_in *sin;
2199
2200                                         sin = (struct sockaddr_in *)sa;
2201                                         if (sin->sin_addr.s_addr) {
2202                                                 error = EINVAL;
2203                                                 SCTP_TCB_UNLOCK(stcb);
2204                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2205                                                 break;
2206                                         }
2207                                 } else if (sa->sa_family == AF_INET6) {
2208                                         struct sockaddr_in6 *sin6;
2209
2210                                         sin6 = (struct sockaddr_in6 *)sa;
2211                                         if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2212                                                 error = EINVAL;
2213                                                 SCTP_TCB_UNLOCK(stcb);
2214                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2215                                                 break;
2216                                         }
2217                                 } else {
2218                                         error = EAFNOSUPPORT;
2219                                         SCTP_TCB_UNLOCK(stcb);
2220                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2221                                         break;
2222                                 }
2223                         }
2224                         if (stcb) {
2225                                 /* Applys to the specific association */
2226                                 paddrp->spp_flags = 0;
2227                                 if (net) {
2228                                         int ovh;
2229
2230                                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2231                                                 ovh = SCTP_MED_OVERHEAD;
2232                                         } else {
2233                                                 ovh = SCTP_MED_V4_OVERHEAD;
2234                                         }
2235
2236
2237                                         paddrp->spp_pathmaxrxt = net->failure_threshold;
2238                                         paddrp->spp_pathmtu = net->mtu - ovh;
2239                                         /* get flags for HB */
2240                                         if (net->dest_state & SCTP_ADDR_NOHB)
2241                                                 paddrp->spp_flags |= SPP_HB_DISABLE;
2242                                         else
2243                                                 paddrp->spp_flags |= SPP_HB_ENABLE;
2244                                         /* get flags for PMTU */
2245                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
2246                                                 paddrp->spp_flags |= SPP_PMTUD_ENABLE;
2247                                         } else {
2248                                                 paddrp->spp_flags |= SPP_PMTUD_DISABLE;
2249                                         }
2250 #ifdef INET
2251                                         if (net->ro._l_addr.sin.sin_family == AF_INET) {
2252                                                 paddrp->spp_ipv4_tos = net->tos_flowlabel & 0x000000fc;
2253                                                 paddrp->spp_flags |= SPP_IPV4_TOS;
2254                                         }
2255 #endif
2256 #ifdef INET6
2257                                         if (net->ro._l_addr.sin6.sin6_family == AF_INET6) {
2258                                                 paddrp->spp_ipv6_flowlabel = net->tos_flowlabel;
2259                                                 paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
2260                                         }
2261 #endif
2262                                 } else {
2263                                         /*
2264                                          * No destination so return default
2265                                          * value
2266                                          */
2267                                         int cnt = 0;
2268
2269                                         paddrp->spp_pathmaxrxt = stcb->asoc.def_net_failure;
2270                                         paddrp->spp_pathmtu = sctp_get_frag_point(stcb, &stcb->asoc);
2271 #ifdef INET
2272                                         paddrp->spp_ipv4_tos = stcb->asoc.default_tos & 0x000000fc;
2273                                         paddrp->spp_flags |= SPP_IPV4_TOS;
2274 #endif
2275 #ifdef INET6
2276                                         paddrp->spp_ipv6_flowlabel = stcb->asoc.default_flowlabel;
2277                                         paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
2278 #endif
2279                                         /* default settings should be these */
2280                                         if (stcb->asoc.hb_is_disabled == 0) {
2281                                                 paddrp->spp_flags |= SPP_HB_ENABLE;
2282                                         } else {
2283                                                 paddrp->spp_flags |= SPP_HB_DISABLE;
2284                                         }
2285                                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2286                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
2287                                                         cnt++;
2288                                                 }
2289                                         }
2290                                         if (cnt) {
2291                                                 paddrp->spp_flags |= SPP_PMTUD_ENABLE;
2292                                         }
2293                                 }
2294                                 paddrp->spp_hbinterval = stcb->asoc.heart_beat_delay;
2295                                 paddrp->spp_assoc_id = sctp_get_associd(stcb);
2296                                 SCTP_TCB_UNLOCK(stcb);
2297                         } else {
2298                                 /* Use endpoint defaults */
2299                                 SCTP_INP_RLOCK(inp);
2300                                 paddrp->spp_pathmaxrxt = inp->sctp_ep.def_net_failure;
2301                                 paddrp->spp_hbinterval = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
2302                                 paddrp->spp_assoc_id = (sctp_assoc_t) 0;
2303                                 /* get inp's default */
2304 #ifdef INET
2305                                 paddrp->spp_ipv4_tos = inp->ip_inp.inp.inp_ip_tos;
2306                                 paddrp->spp_flags |= SPP_IPV4_TOS;
2307 #endif
2308 #ifdef INET6
2309                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2310                                         paddrp->spp_ipv6_flowlabel = ((struct in6pcb *)inp)->in6p_flowinfo;
2311                                         paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
2312                                 }
2313 #endif
2314                                 /* can't return this */
2315                                 paddrp->spp_pathmtu = 0;
2316
2317                                 /* default behavior, no stcb */
2318                                 paddrp->spp_flags = SPP_PMTUD_ENABLE;
2319
2320                                 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
2321                                         paddrp->spp_flags |= SPP_HB_ENABLE;
2322                                 } else {
2323                                         paddrp->spp_flags |= SPP_HB_DISABLE;
2324                                 }
2325                                 SCTP_INP_RUNLOCK(inp);
2326                         }
2327                         *optsize = sizeof(struct sctp_paddrparams);
2328                 }
2329                 break;
2330         case SCTP_GET_PEER_ADDR_INFO:
2331                 {
2332                         struct sctp_paddrinfo *paddri;
2333                         struct sctp_nets *net;
2334
2335                         SCTP_CHECK_AND_CAST(paddri, optval, struct sctp_paddrinfo, *optsize);
2336                         SCTP_FIND_STCB(inp, stcb, paddri->spinfo_assoc_id);
2337
2338                         net = NULL;
2339                         if (stcb) {
2340                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddri->spinfo_address);
2341                         } else {
2342                                 /*
2343                                  * We increment here since
2344                                  * sctp_findassociation_ep_addr() wil do a
2345                                  * decrement if it finds the stcb as long as
2346                                  * the locked tcb (last argument) is NOT a
2347                                  * TCB.. aka NULL.
2348                                  */
2349                                 SCTP_INP_INCR_REF(inp);
2350                                 stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddri->spinfo_address, &net, NULL, NULL);
2351                                 if (stcb == NULL) {
2352                                         SCTP_INP_DECR_REF(inp);
2353                                 }
2354                         }
2355
2356                         if ((stcb) && (net)) {
2357                                 paddri->spinfo_state = net->dest_state & (SCTP_REACHABLE_MASK | SCTP_ADDR_NOHB);
2358                                 paddri->spinfo_cwnd = net->cwnd;
2359                                 paddri->spinfo_srtt = ((net->lastsa >> 2) + net->lastsv) >> 1;
2360                                 paddri->spinfo_rto = net->RTO;
2361                                 paddri->spinfo_assoc_id = sctp_get_associd(stcb);
2362                                 SCTP_TCB_UNLOCK(stcb);
2363                         } else {
2364                                 if (stcb) {
2365                                         SCTP_TCB_UNLOCK(stcb);
2366                                 }
2367                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
2368                                 error = ENOENT;
2369                         }
2370                         *optsize = sizeof(struct sctp_paddrinfo);
2371                 }
2372                 break;
2373         case SCTP_PCB_STATUS:
2374                 {
2375                         struct sctp_pcbinfo *spcb;
2376
2377                         SCTP_CHECK_AND_CAST(spcb, optval, struct sctp_pcbinfo, *optsize);
2378                         sctp_fill_pcbinfo(spcb);
2379                         *optsize = sizeof(struct sctp_pcbinfo);
2380                 }
2381                 break;
2382
2383         case SCTP_STATUS:
2384                 {
2385                         struct sctp_nets *net;
2386                         struct sctp_status *sstat;
2387
2388                         SCTP_CHECK_AND_CAST(sstat, optval, struct sctp_status, *optsize);
2389                         SCTP_FIND_STCB(inp, stcb, sstat->sstat_assoc_id);
2390
2391                         if (stcb == NULL) {
2392                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2393                                 error = EINVAL;
2394                                 break;
2395                         }
2396                         /*
2397                          * I think passing the state is fine since
2398                          * sctp_constants.h will be available to the user
2399                          * land.
2400                          */
2401                         sstat->sstat_state = stcb->asoc.state;
2402                         sstat->sstat_assoc_id = sctp_get_associd(stcb);
2403                         sstat->sstat_rwnd = stcb->asoc.peers_rwnd;
2404                         sstat->sstat_unackdata = stcb->asoc.sent_queue_cnt;
2405                         /*
2406                          * We can't include chunks that have been passed to
2407                          * the socket layer. Only things in queue.
2408                          */
2409                         sstat->sstat_penddata = (stcb->asoc.cnt_on_reasm_queue +
2410                             stcb->asoc.cnt_on_all_streams);
2411
2412
2413                         sstat->sstat_instrms = stcb->asoc.streamincnt;
2414                         sstat->sstat_outstrms = stcb->asoc.streamoutcnt;
2415                         sstat->sstat_fragmentation_point = sctp_get_frag_point(stcb, &stcb->asoc);
2416                         memcpy(&sstat->sstat_primary.spinfo_address,
2417                             &stcb->asoc.primary_destination->ro._l_addr,
2418                             ((struct sockaddr *)(&stcb->asoc.primary_destination->ro._l_addr))->sa_len);
2419                         net = stcb->asoc.primary_destination;
2420                         ((struct sockaddr_in *)&sstat->sstat_primary.spinfo_address)->sin_port = stcb->rport;
2421                         /*
2422                          * Again the user can get info from sctp_constants.h
2423                          * for what the state of the network is.
2424                          */
2425                         sstat->sstat_primary.spinfo_state = net->dest_state & SCTP_REACHABLE_MASK;
2426                         sstat->sstat_primary.spinfo_cwnd = net->cwnd;
2427                         sstat->sstat_primary.spinfo_srtt = net->lastsa;
2428                         sstat->sstat_primary.spinfo_rto = net->RTO;
2429                         sstat->sstat_primary.spinfo_mtu = net->mtu;
2430                         sstat->sstat_primary.spinfo_assoc_id = sctp_get_associd(stcb);
2431                         SCTP_TCB_UNLOCK(stcb);
2432                         *optsize = sizeof(*sstat);
2433                 }
2434                 break;
2435         case SCTP_RTOINFO:
2436                 {
2437                         struct sctp_rtoinfo *srto;
2438
2439                         SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, *optsize);
2440                         SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id);
2441
2442                         if (stcb) {
2443                                 srto->srto_initial = stcb->asoc.initial_rto;
2444                                 srto->srto_max = stcb->asoc.maxrto;
2445                                 srto->srto_min = stcb->asoc.minrto;
2446                                 SCTP_TCB_UNLOCK(stcb);
2447                         } else {
2448                                 SCTP_INP_RLOCK(inp);
2449                                 srto->srto_initial = inp->sctp_ep.initial_rto;
2450                                 srto->srto_max = inp->sctp_ep.sctp_maxrto;
2451                                 srto->srto_min = inp->sctp_ep.sctp_minrto;
2452                                 SCTP_INP_RUNLOCK(inp);
2453                         }
2454                         *optsize = sizeof(*srto);
2455                 }
2456                 break;
2457         case SCTP_ASSOCINFO:
2458                 {
2459                         struct sctp_assocparams *sasoc;
2460                         uint32_t oldval;
2461
2462                         SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, *optsize);
2463                         SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id);
2464
2465                         if (stcb) {
2466                                 oldval = sasoc->sasoc_cookie_life;
2467                                 sasoc->sasoc_cookie_life = TICKS_TO_MSEC(stcb->asoc.cookie_life);
2468                                 sasoc->sasoc_asocmaxrxt = stcb->asoc.max_send_times;
2469                                 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets;
2470                                 sasoc->sasoc_peer_rwnd = stcb->asoc.peers_rwnd;
2471                                 sasoc->sasoc_local_rwnd = stcb->asoc.my_rwnd;
2472                                 SCTP_TCB_UNLOCK(stcb);
2473                         } else {
2474                                 SCTP_INP_RLOCK(inp);
2475                                 sasoc->sasoc_cookie_life = TICKS_TO_MSEC(inp->sctp_ep.def_cookie_life);
2476                                 sasoc->sasoc_asocmaxrxt = inp->sctp_ep.max_send_times;
2477                                 sasoc->sasoc_number_peer_destinations = 0;
2478                                 sasoc->sasoc_peer_rwnd = 0;
2479                                 sasoc->sasoc_local_rwnd = sbspace(&inp->sctp_socket->so_rcv);
2480                                 SCTP_INP_RUNLOCK(inp);
2481                         }
2482                         *optsize = sizeof(*sasoc);
2483                 }
2484                 break;
2485         case SCTP_DEFAULT_SEND_PARAM:
2486                 {
2487                         struct sctp_sndrcvinfo *s_info;
2488
2489                         SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, *optsize);
2490                         SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id);
2491
2492                         if (stcb) {
2493                                 memcpy(s_info, &stcb->asoc.def_send, sizeof(stcb->asoc.def_send));
2494                                 SCTP_TCB_UNLOCK(stcb);
2495                         } else {
2496                                 SCTP_INP_RLOCK(inp);
2497                                 memcpy(s_info, &inp->def_send, sizeof(inp->def_send));
2498                                 SCTP_INP_RUNLOCK(inp);
2499                         }
2500                         *optsize = sizeof(*s_info);
2501                 }
2502                 break;
2503         case SCTP_INITMSG:
2504                 {
2505                         struct sctp_initmsg *sinit;
2506
2507                         SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, *optsize);
2508                         SCTP_INP_RLOCK(inp);
2509                         sinit->sinit_num_ostreams = inp->sctp_ep.pre_open_stream_count;
2510                         sinit->sinit_max_instreams = inp->sctp_ep.max_open_streams_intome;
2511                         sinit->sinit_max_attempts = inp->sctp_ep.max_init_times;
2512                         sinit->sinit_max_init_timeo = inp->sctp_ep.initial_init_rto_max;
2513                         SCTP_INP_RUNLOCK(inp);
2514                         *optsize = sizeof(*sinit);
2515                 }
2516                 break;
2517         case SCTP_PRIMARY_ADDR:
2518                 /* we allow a "get" operation on this */
2519                 {
2520                         struct sctp_setprim *ssp;
2521
2522                         SCTP_CHECK_AND_CAST(ssp, optval, struct sctp_setprim, *optsize);
2523                         SCTP_FIND_STCB(inp, stcb, ssp->ssp_assoc_id);
2524
2525                         if (stcb) {
2526                                 /* simply copy out the sockaddr_storage... */
2527                                 int len;
2528
2529                                 len = *optsize;
2530                                 if (len > stcb->asoc.primary_destination->ro._l_addr.sa.sa_len)
2531                                         len = stcb->asoc.primary_destination->ro._l_addr.sa.sa_len;
2532
2533                                 memcpy(&ssp->ssp_addr,
2534                                     &stcb->asoc.primary_destination->ro._l_addr,
2535                                     len);
2536                                 SCTP_TCB_UNLOCK(stcb);
2537                         } else {
2538                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2539                                 error = EINVAL;
2540                         }
2541                         *optsize = sizeof(*ssp);
2542                 }
2543                 break;
2544
2545         case SCTP_HMAC_IDENT:
2546                 {
2547                         struct sctp_hmacalgo *shmac;
2548                         sctp_hmaclist_t *hmaclist;
2549                         uint32_t size;
2550                         int i;
2551
2552                         SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, *optsize);
2553
2554                         SCTP_INP_RLOCK(inp);
2555                         hmaclist = inp->sctp_ep.local_hmacs;
2556                         if (hmaclist == NULL) {
2557                                 /* no HMACs to return */
2558                                 *optsize = sizeof(*shmac);
2559                                 SCTP_INP_RUNLOCK(inp);
2560                                 break;
2561                         }
2562                         /* is there room for all of the hmac ids? */
2563                         size = sizeof(*shmac) + (hmaclist->num_algo *
2564                             sizeof(shmac->shmac_idents[0]));
2565                         if ((size_t)(*optsize) < size) {
2566                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2567                                 error = EINVAL;
2568                                 SCTP_INP_RUNLOCK(inp);
2569                                 break;
2570                         }
2571                         /* copy in the list */
2572                         shmac->shmac_number_of_idents = hmaclist->num_algo;
2573                         for (i = 0; i < hmaclist->num_algo; i++) {
2574                                 shmac->shmac_idents[i] = hmaclist->hmac[i];
2575                         }
2576                         SCTP_INP_RUNLOCK(inp);
2577                         *optsize = size;
2578                         break;
2579                 }
2580         case SCTP_AUTH_ACTIVE_KEY:
2581                 {
2582                         struct sctp_authkeyid *scact;
2583
2584                         SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, *optsize);
2585                         SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id);
2586
2587                         if (stcb) {
2588                                 /* get the active key on the assoc */
2589                                 scact->scact_keynumber = stcb->asoc.authinfo.active_keyid;
2590                                 SCTP_TCB_UNLOCK(stcb);
2591                         } else {
2592                                 /* get the endpoint active key */
2593                                 SCTP_INP_RLOCK(inp);
2594                                 scact->scact_keynumber = inp->sctp_ep.default_keyid;
2595                                 SCTP_INP_RUNLOCK(inp);
2596                         }
2597                         *optsize = sizeof(*scact);
2598                         break;
2599                 }
2600         case SCTP_LOCAL_AUTH_CHUNKS:
2601                 {
2602                         struct sctp_authchunks *sac;
2603                         sctp_auth_chklist_t *chklist = NULL;
2604                         size_t size = 0;
2605
2606                         SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize);
2607                         SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id);
2608
2609                         if (stcb) {
2610                                 /* get off the assoc */
2611                                 chklist = stcb->asoc.local_auth_chunks;
2612                                 /* is there enough space? */
2613                                 size = sctp_auth_get_chklist_size(chklist);
2614                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2615                                         error = EINVAL;
2616                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2617                                 } else {
2618                                         /* copy in the chunks */
2619                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2620                                 }
2621                                 SCTP_TCB_UNLOCK(stcb);
2622                         } else {
2623                                 /* get off the endpoint */
2624                                 SCTP_INP_RLOCK(inp);
2625                                 chklist = inp->sctp_ep.local_auth_chunks;
2626                                 /* is there enough space? */
2627                                 size = sctp_auth_get_chklist_size(chklist);
2628                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2629                                         error = EINVAL;
2630                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2631                                 } else {
2632                                         /* copy in the chunks */
2633                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2634                                 }
2635                                 SCTP_INP_RUNLOCK(inp);
2636                         }
2637                         *optsize = sizeof(struct sctp_authchunks) + size;
2638                         break;
2639                 }
2640         case SCTP_PEER_AUTH_CHUNKS:
2641                 {
2642                         struct sctp_authchunks *sac;
2643                         sctp_auth_chklist_t *chklist = NULL;
2644                         size_t size = 0;
2645
2646                         SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize);
2647                         SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id);
2648
2649                         if (stcb) {
2650                                 /* get off the assoc */
2651                                 chklist = stcb->asoc.peer_auth_chunks;
2652                                 /* is there enough space? */
2653                                 size = sctp_auth_get_chklist_size(chklist);
2654                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2655                                         error = EINVAL;
2656                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2657                                 } else {
2658                                         /* copy in the chunks */
2659                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2660                                 }
2661                                 SCTP_TCB_UNLOCK(stcb);
2662                         } else {
2663                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
2664                                 error = ENOENT;
2665                         }
2666                         *optsize = sizeof(struct sctp_authchunks) + size;
2667                         break;
2668                 }
2669
2670
2671         default:
2672                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
2673                 error = ENOPROTOOPT;
2674                 *optsize = 0;
2675                 break;
2676         }                       /* end switch (sopt->sopt_name) */
2677         return (error);
2678 }
2679
2680 static int
2681 sctp_setopt(struct socket *so, int optname, void *optval, size_t optsize,
2682     void *p)
2683 {
2684         int error, set_opt;
2685         uint32_t *mopt;
2686         struct sctp_tcb *stcb = NULL;
2687         struct sctp_inpcb *inp = NULL;
2688         uint32_t vrf_id;
2689
2690         if (optval == NULL) {
2691                 SCTP_PRINTF("optval is NULL\n");
2692                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2693                 return (EINVAL);
2694         }
2695         inp = (struct sctp_inpcb *)so->so_pcb;
2696         if (inp == 0) {
2697                 SCTP_PRINTF("inp is NULL?\n");
2698                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2699                 return EINVAL;
2700         }
2701         vrf_id = inp->def_vrf_id;
2702
2703         error = 0;
2704         switch (optname) {
2705         case SCTP_NODELAY:
2706         case SCTP_AUTOCLOSE:
2707         case SCTP_AUTO_ASCONF:
2708         case SCTP_EXPLICIT_EOR:
2709         case SCTP_DISABLE_FRAGMENTS:
2710         case SCTP_USE_EXT_RCVINFO:
2711         case SCTP_I_WANT_MAPPED_V4_ADDR:
2712                 /* copy in the option value */
2713                 SCTP_CHECK_AND_CAST(mopt, optval, uint32_t, optsize);
2714                 set_opt = 0;
2715                 if (error)
2716                         break;
2717                 switch (optname) {
2718                 case SCTP_DISABLE_FRAGMENTS:
2719                         set_opt = SCTP_PCB_FLAGS_NO_FRAGMENT;
2720                         break;
2721                 case SCTP_AUTO_ASCONF:
2722                         /*
2723                          * NOTE: we don't really support this flag
2724                          */
2725                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
2726                                 /* only valid for bound all sockets */
2727                                 set_opt = SCTP_PCB_FLAGS_AUTO_ASCONF;
2728                         } else {
2729                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2730                                 return (EINVAL);
2731                         }
2732                         break;
2733                 case SCTP_EXPLICIT_EOR:
2734                         set_opt = SCTP_PCB_FLAGS_EXPLICIT_EOR;
2735                         break;
2736                 case SCTP_USE_EXT_RCVINFO:
2737                         set_opt = SCTP_PCB_FLAGS_EXT_RCVINFO;
2738                         break;
2739                 case SCTP_I_WANT_MAPPED_V4_ADDR:
2740                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2741                                 set_opt = SCTP_PCB_FLAGS_NEEDS_MAPPED_V4;
2742                         } else {
2743                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2744                                 return (EINVAL);
2745                         }
2746                         break;
2747                 case SCTP_NODELAY:
2748                         set_opt = SCTP_PCB_FLAGS_NODELAY;
2749                         break;
2750                 case SCTP_AUTOCLOSE:
2751                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2752                             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
2753                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2754                                 return (EINVAL);
2755                         }
2756                         set_opt = SCTP_PCB_FLAGS_AUTOCLOSE;
2757                         /*
2758                          * The value is in ticks. Note this does not effect
2759                          * old associations, only new ones.
2760                          */
2761                         inp->sctp_ep.auto_close_time = SEC_TO_TICKS(*mopt);
2762                         break;
2763                 }
2764                 SCTP_INP_WLOCK(inp);
2765                 if (*mopt != 0) {
2766                         sctp_feature_on(inp, set_opt);
2767                 } else {
2768                         sctp_feature_off(inp, set_opt);
2769                 }
2770                 SCTP_INP_WUNLOCK(inp);
2771                 break;
2772         case SCTP_REUSE_PORT:
2773                 {
2774                         SCTP_CHECK_AND_CAST(mopt, optval, uint32_t, optsize);
2775                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
2776                                 /* Can't set it after we are bound */
2777                                 error = EINVAL;
2778                                 break;
2779                         }
2780                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE)) {
2781                                 /* Can't do this for a 1-m socket */
2782                                 error = EINVAL;
2783                                 break;
2784                         }
2785                         if (optval)
2786                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE);
2787                         else
2788                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE);
2789                 }
2790                 break;
2791         case SCTP_PARTIAL_DELIVERY_POINT:
2792                 {
2793                         uint32_t *value;
2794
2795                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, optsize);
2796                         if (*value > SCTP_SB_LIMIT_RCV(so)) {
2797                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2798                                 error = EINVAL;
2799                                 break;
2800                         }
2801                         inp->partial_delivery_point = *value;
2802                 }
2803                 break;
2804         case SCTP_FRAGMENT_INTERLEAVE:
2805                 /* not yet until we re-write sctp_recvmsg() */
2806                 {
2807                         uint32_t *level;
2808
2809                         SCTP_CHECK_AND_CAST(level, optval, uint32_t, optsize);
2810                         if (*level == SCTP_FRAG_LEVEL_2) {
2811                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2812                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2813                         } else if (*level == SCTP_FRAG_LEVEL_1) {
2814                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2815                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2816                         } else if (*level == SCTP_FRAG_LEVEL_0) {
2817                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2818                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2819
2820                         } else {
2821                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2822                                 error = EINVAL;
2823                         }
2824                 }
2825                 break;
2826         case SCTP_CMT_ON_OFF:
2827                 {
2828                         struct sctp_assoc_value *av;
2829
2830                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2831                         if (SCTP_BASE_SYSCTL(sctp_cmt_on_off)) {
2832                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2833                                 if (stcb) {
2834                                         stcb->asoc.sctp_cmt_on_off = (uint8_t) av->assoc_value;
2835                                         SCTP_TCB_UNLOCK(stcb);
2836                                 } else {
2837                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
2838                                         error = ENOTCONN;
2839                                 }
2840                         } else {
2841                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
2842                                 error = ENOPROTOOPT;
2843                         }
2844                 }
2845                 break;
2846                 /* EY nr_sack_on_off socket option */
2847         case SCTP_NR_SACK_ON_OFF:
2848                 {
2849                         struct sctp_assoc_value *av;
2850
2851                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2852                         if (SCTP_BASE_SYSCTL(sctp_nr_sack_on_off)) {
2853                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2854                                 if (stcb) {
2855                                         stcb->asoc.sctp_nr_sack_on_off = (uint8_t) av->assoc_value;
2856                                         SCTP_TCB_UNLOCK(stcb);
2857                                 } else {
2858                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
2859                                         error = ENOTCONN;
2860                                 }
2861                         } else {
2862                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
2863                                 error = ENOPROTOOPT;
2864                         }
2865                 }
2866                 break;
2867                 /* JRS - Set socket option for pluggable congestion control */
2868         case SCTP_PLUGGABLE_CC:
2869                 {
2870                         struct sctp_assoc_value *av;
2871
2872                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2873                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2874                         if (stcb) {
2875                                 switch (av->assoc_value) {
2876                                         /*
2877                                          * JRS - Standard TCP congestion
2878                                          * control
2879                                          */
2880                                 case SCTP_CC_RFC2581:
2881                                         {
2882                                                 stcb->asoc.congestion_control_module = SCTP_CC_RFC2581;
2883                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_set_initial_cc_param;
2884                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_cwnd_update_after_sack;
2885                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_cwnd_update_after_fr;
2886                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_cwnd_update_after_timeout;
2887                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_cwnd_update_after_ecn_echo;
2888                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
2889                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
2890                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_cwnd_update_after_fr_timer;
2891                                                 SCTP_TCB_UNLOCK(stcb);
2892                                                 break;
2893                                         }
2894                                         /*
2895                                          * JRS - High Speed TCP congestion
2896                                          * control (Floyd)
2897                                          */
2898                                 case SCTP_CC_HSTCP:
2899                                         {
2900                                                 stcb->asoc.congestion_control_module = SCTP_CC_HSTCP;
2901                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_set_initial_cc_param;
2902                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_hs_cwnd_update_after_sack;
2903                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_hs_cwnd_update_after_fr;
2904                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_cwnd_update_after_timeout;
2905                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_cwnd_update_after_ecn_echo;
2906                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
2907                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
2908                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_cwnd_update_after_fr_timer;
2909                                                 SCTP_TCB_UNLOCK(stcb);
2910                                                 break;
2911                                         }
2912                                         /* JRS - HTCP congestion control */
2913                                 case SCTP_CC_HTCP:
2914                                         {
2915                                                 stcb->asoc.congestion_control_module = SCTP_CC_HTCP;
2916                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_htcp_set_initial_cc_param;
2917                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_htcp_cwnd_update_after_sack;
2918                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_htcp_cwnd_update_after_fr;
2919                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_htcp_cwnd_update_after_timeout;
2920                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_htcp_cwnd_update_after_ecn_echo;
2921                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
2922                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
2923                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_htcp_cwnd_update_after_fr_timer;
2924                                                 SCTP_TCB_UNLOCK(stcb);
2925                                                 break;
2926                                         }
2927                                         /*
2928                                          * JRS - All other values are
2929                                          * invalid
2930                                          */
2931                                 default:
2932                                         {
2933                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2934                                                 error = EINVAL;
2935                                                 SCTP_TCB_UNLOCK(stcb);
2936                                                 break;
2937                                         }
2938                                 }
2939                         } else {
2940                                 switch (av->assoc_value) {
2941                                 case SCTP_CC_RFC2581:
2942                                 case SCTP_CC_HSTCP:
2943                                 case SCTP_CC_HTCP:
2944                                         inp->sctp_ep.sctp_default_cc_module = av->assoc_value;
2945                                         break;
2946                                 default:
2947                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2948                                         error = EINVAL;
2949                                         break;
2950                                 };
2951                         }
2952                 }
2953                 break;
2954         case SCTP_CLR_STAT_LOG:
2955                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
2956                 error = EOPNOTSUPP;
2957                 break;
2958         case SCTP_CONTEXT:
2959                 {
2960                         struct sctp_assoc_value *av;
2961
2962                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2963                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2964
2965                         if (stcb) {
2966                                 stcb->asoc.context = av->assoc_value;
2967                                 SCTP_TCB_UNLOCK(stcb);
2968                         } else {
2969                                 SCTP_INP_WLOCK(inp);
2970                                 inp->sctp_context = av->assoc_value;
2971                                 SCTP_INP_WUNLOCK(inp);
2972                         }
2973                 }
2974                 break;
2975         case SCTP_VRF_ID:
2976                 {
2977                         uint32_t *default_vrfid;
2978
2979                         SCTP_CHECK_AND_CAST(default_vrfid, optval, uint32_t, optsize);
2980                         if (*default_vrfid > SCTP_MAX_VRF_ID) {
2981                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2982                                 error = EINVAL;
2983                                 break;
2984                         }
2985                         inp->def_vrf_id = *default_vrfid;
2986                         break;
2987                 }
2988         case SCTP_DEL_VRF_ID:
2989                 {
2990                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
2991                         error = EOPNOTSUPP;
2992                         break;
2993                 }
2994         case SCTP_ADD_VRF_ID:
2995                 {
2996                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
2997                         error = EOPNOTSUPP;
2998                         break;
2999                 }
3000         case SCTP_DELAYED_SACK:
3001                 {
3002                         struct sctp_sack_info *sack;
3003
3004                         SCTP_CHECK_AND_CAST(sack, optval, struct sctp_sack_info, optsize);
3005                         SCTP_FIND_STCB(inp, stcb, sack->sack_assoc_id);
3006                         if (sack->sack_delay) {
3007                                 if (sack->sack_delay > SCTP_MAX_SACK_DELAY)
3008                                         sack->sack_delay = SCTP_MAX_SACK_DELAY;
3009                         }
3010                         if (stcb) {
3011                                 if (sack->sack_delay) {
3012                                         if (MSEC_TO_TICKS(sack->sack_delay) < 1) {
3013                                                 sack->sack_delay = TICKS_TO_MSEC(1);
3014                                         }
3015                                         stcb->asoc.delayed_ack = sack->sack_delay;
3016                                 }
3017                                 if (sack->sack_freq) {
3018                                         stcb->asoc.sack_freq = sack->sack_freq;
3019                                 }
3020                                 SCTP_TCB_UNLOCK(stcb);
3021                         } else {
3022                                 SCTP_INP_WLOCK(inp);
3023                                 if (sack->sack_delay) {
3024                                         if (MSEC_TO_TICKS(sack->sack_delay) < 1) {
3025                                                 sack->sack_delay = TICKS_TO_MSEC(1);
3026                                         }
3027                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(sack->sack_delay);
3028                                 }
3029                                 if (sack->sack_freq) {
3030                                         inp->sctp_ep.sctp_sack_freq = sack->sack_freq;
3031                                 }
3032                                 SCTP_INP_WUNLOCK(inp);
3033                         }
3034                         break;
3035                 }
3036         case SCTP_AUTH_CHUNK:
3037                 {
3038                         struct sctp_authchunk *sauth;
3039
3040                         SCTP_CHECK_AND_CAST(sauth, optval, struct sctp_authchunk, optsize);
3041
3042                         SCTP_INP_WLOCK(inp);
3043                         if (sctp_auth_add_chunk(sauth->sauth_chunk, inp->sctp_ep.local_auth_chunks)) {
3044                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3045                                 error = EINVAL;
3046                         }
3047                         SCTP_INP_WUNLOCK(inp);
3048                         break;
3049                 }
3050         case SCTP_AUTH_KEY:
3051                 {
3052                         struct sctp_authkey *sca;
3053                         struct sctp_keyhead *shared_keys;
3054                         sctp_sharedkey_t *shared_key;
3055                         sctp_key_t *key = NULL;
3056                         size_t size;
3057
3058                         SCTP_CHECK_AND_CAST(sca, optval, struct sctp_authkey, optsize);
3059                         SCTP_FIND_STCB(inp, stcb, sca->sca_assoc_id);
3060                         size = optsize - sizeof(*sca);
3061
3062                         if (stcb) {
3063                                 /* set it on the assoc */
3064                                 shared_keys = &stcb->asoc.shared_keys;
3065                                 /* clear the cached keys for this key id */
3066                                 sctp_clear_cachedkeys(stcb, sca->sca_keynumber);
3067                                 /*
3068                                  * create the new shared key and
3069                                  * insert/replace it
3070                                  */
3071                                 if (size > 0) {
3072                                         key = sctp_set_key(sca->sca_key, (uint32_t) size);
3073                                         if (key == NULL) {
3074                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
3075                                                 error = ENOMEM;
3076                                                 SCTP_TCB_UNLOCK(stcb);
3077                                                 break;
3078                                         }
3079                                 }
3080                                 shared_key = sctp_alloc_sharedkey();
3081                                 if (shared_key == NULL) {
3082                                         sctp_free_key(key);
3083                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
3084                                         error = ENOMEM;
3085                                         SCTP_TCB_UNLOCK(stcb);
3086                                         break;
3087                                 }
3088                                 shared_key->key = key;
3089                                 shared_key->keyid = sca->sca_keynumber;
3090                                 error = sctp_insert_sharedkey(shared_keys, shared_key);
3091                                 SCTP_TCB_UNLOCK(stcb);
3092                         } else {
3093                                 /* set it on the endpoint */
3094                                 SCTP_INP_WLOCK(inp);
3095                                 shared_keys = &inp->sctp_ep.shared_keys;
3096                                 /*
3097                                  * clear the cached keys on all assocs for
3098                                  * this key id
3099                                  */
3100                                 sctp_clear_cachedkeys_ep(inp, sca->sca_keynumber);
3101                                 /*
3102                                  * create the new shared key and
3103                                  * insert/replace it
3104                                  */
3105                                 if (size > 0) {
3106                                         key = sctp_set_key(sca->sca_key, (uint32_t) size);
3107                                         if (key == NULL) {
3108                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
3109                                                 error = ENOMEM;
3110                                                 SCTP_INP_WUNLOCK(inp);
3111                                                 break;
3112                                         }
3113                                 }
3114                                 shared_key = sctp_alloc_sharedkey();
3115                                 if (shared_key == NULL) {
3116                                         sctp_free_key(key);
3117                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
3118                                         error = ENOMEM;
3119                                         SCTP_INP_WUNLOCK(inp);
3120                                         break;
3121                                 }
3122                                 shared_key->key = key;
3123                                 shared_key->keyid = sca->sca_keynumber;
3124                                 error = sctp_insert_sharedkey(shared_keys, shared_key);
3125                                 SCTP_INP_WUNLOCK(inp);
3126                         }
3127                         break;
3128                 }
3129         case SCTP_HMAC_IDENT:
3130                 {
3131                         struct sctp_hmacalgo *shmac;
3132                         sctp_hmaclist_t *hmaclist;
3133                         uint16_t hmacid;
3134                         uint32_t i;
3135
3136                         size_t found;
3137
3138                         SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, optsize);
3139                         if (optsize < sizeof(struct sctp_hmacalgo) + shmac->shmac_number_of_idents * sizeof(uint16_t)) {
3140                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3141                                 error = EINVAL;
3142                                 break;
3143                         }
3144                         hmaclist = sctp_alloc_hmaclist(shmac->shmac_number_of_idents);
3145                         if (hmaclist == NULL) {
3146                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
3147                                 error = ENOMEM;
3148                                 break;
3149                         }
3150                         for (i = 0; i < shmac->shmac_number_of_idents; i++) {
3151                                 hmacid = shmac->shmac_idents[i];
3152                                 if (sctp_auth_add_hmacid(hmaclist, hmacid)) {
3153                                          /* invalid HMACs were found */ ;
3154                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3155                                         error = EINVAL;
3156                                         sctp_free_hmaclist(hmaclist);
3157                                         goto sctp_set_hmac_done;
3158                                 }
3159                         }
3160                         found = 0;
3161                         for (i = 0; i < hmaclist->num_algo; i++) {
3162                                 if (hmaclist->hmac[i] == SCTP_AUTH_HMAC_ID_SHA1) {
3163                                         /* already in list */
3164                                         found = 1;
3165                                 }
3166                         }
3167                         if (!found) {
3168                                 sctp_free_hmaclist(hmaclist);
3169                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3170                                 error = EINVAL;
3171                                 break;
3172                         }
3173                         /* set it on the endpoint */
3174                         SCTP_INP_WLOCK(inp);
3175                         if (inp->sctp_ep.local_hmacs)
3176                                 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3177                         inp->sctp_ep.local_hmacs = hmaclist;
3178                         SCTP_INP_WUNLOCK(inp);
3179         sctp_set_hmac_done:
3180                         break;
3181                 }
3182         case SCTP_AUTH_ACTIVE_KEY:
3183                 {
3184                         struct sctp_authkeyid *scact;
3185
3186                         SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid,
3187                             optsize);
3188                         SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id);
3189
3190                         /* set the active key on the right place */
3191                         if (stcb) {
3192                                 /* set the active key on the assoc */
3193                                 if (sctp_auth_setactivekey(stcb,
3194                                     scact->scact_keynumber)) {
3195                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
3196                                             SCTP_FROM_SCTP_USRREQ,
3197                                             EINVAL);
3198                                         error = EINVAL;
3199                                 }
3200                                 SCTP_TCB_UNLOCK(stcb);
3201                         } else {
3202                                 /* set the active key on the endpoint */
3203                                 SCTP_INP_WLOCK(inp);
3204                                 if (sctp_auth_setactivekey_ep(inp,
3205                                     scact->scact_keynumber)) {
3206                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
3207                                             SCTP_FROM_SCTP_USRREQ,
3208                                             EINVAL);
3209                                         error = EINVAL;
3210                                 }
3211                                 SCTP_INP_WUNLOCK(inp);
3212                         }
3213                         break;
3214                 }
3215         case SCTP_AUTH_DELETE_KEY:
3216                 {
3217                         struct sctp_authkeyid *scdel;
3218
3219                         SCTP_CHECK_AND_CAST(scdel, optval, struct sctp_authkeyid,
3220                             optsize);
3221                         SCTP_FIND_STCB(inp, stcb, scdel->scact_assoc_id);
3222
3223                         /* delete the key from the right place */
3224                         if (stcb) {
3225                                 if (sctp_delete_sharedkey(stcb,
3226                                     scdel->scact_keynumber)) {
3227                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
3228                                             SCTP_FROM_SCTP_USRREQ,
3229                                             EINVAL);
3230                                         error = EINVAL;
3231                                 }
3232                                 SCTP_TCB_UNLOCK(stcb);
3233                         } else {
3234                                 SCTP_INP_WLOCK(inp);
3235                                 if (sctp_delete_sharedkey_ep(inp,
3236                                     scdel->scact_keynumber)) {
3237                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
3238                                             SCTP_FROM_SCTP_USRREQ,
3239                                             EINVAL);
3240                                         error = EINVAL;
3241                                 }
3242                                 SCTP_INP_WUNLOCK(inp);
3243                         }
3244                         break;
3245                 }
3246         case SCTP_AUTH_DEACTIVATE_KEY:
3247                 {
3248                         struct sctp_authkeyid *keyid;
3249
3250                         SCTP_CHECK_AND_CAST(keyid, optval, struct sctp_authkeyid,
3251                             optsize);
3252                         SCTP_FIND_STCB(inp, stcb, keyid->scact_assoc_id);
3253
3254                         /* deactivate the key from the right place */
3255                         if (stcb) {
3256                                 if (sctp_deact_sharedkey(stcb,
3257                                     keyid->scact_keynumber)) {
3258                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
3259                                             SCTP_FROM_SCTP_USRREQ,
3260                                             EINVAL);
3261                                         error = EINVAL;
3262                                 }
3263                                 SCTP_TCB_UNLOCK(stcb);
3264                         } else {
3265                                 SCTP_INP_WLOCK(inp);
3266                                 if (sctp_deact_sharedkey_ep(inp,
3267                                     keyid->scact_keynumber)) {
3268                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
3269                                             SCTP_FROM_SCTP_USRREQ,
3270                                             EINVAL);
3271                                         error = EINVAL;
3272                                 }
3273                                 SCTP_INP_WUNLOCK(inp);
3274                         }
3275                         break;
3276                 }
3277
3278         case SCTP_RESET_STREAMS:
3279                 {
3280                         struct sctp_stream_reset *strrst;
3281                         uint8_t send_in = 0, send_tsn = 0, send_out = 0,
3282                                 addstream = 0;
3283                         uint16_t addstrmcnt = 0;
3284                         int i;
3285
3286                         SCTP_CHECK_AND_CAST(strrst, optval, struct sctp_stream_reset, optsize);
3287                         SCTP_FIND_STCB(inp, stcb, strrst->strrst_assoc_id);
3288
3289                         if (stcb == NULL) {
3290                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
3291                                 error = ENOENT;
3292                                 break;
3293                         }
3294                         if (stcb->asoc.peer_supports_strreset == 0) {
3295                                 /*
3296                                  * Peer does not support it, we return
3297                                  * protocol not supported since this is true
3298                                  * for this feature and this peer, not the
3299                                  * socket request in general.
3300                                  */
3301                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EPROTONOSUPPORT);
3302                                 error = EPROTONOSUPPORT;
3303                                 SCTP_TCB_UNLOCK(stcb);
3304                                 break;
3305                         }
3306                         if (stcb->asoc.stream_reset_outstanding) {
3307                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
3308                                 error = EALREADY;
3309                                 SCTP_TCB_UNLOCK(stcb);
3310                                 break;
3311                         }
3312                         if (strrst->strrst_flags == SCTP_RESET_LOCAL_RECV) {
3313                                 send_in = 1;
3314                         } else if (strrst->strrst_flags == SCTP_RESET_LOCAL_SEND) {
3315                                 send_out = 1;
3316                         } else if (strrst->strrst_flags == SCTP_RESET_BOTH) {
3317                                 send_in = 1;
3318                                 send_out = 1;
3319                         } else if (strrst->strrst_flags == SCTP_RESET_TSN) {
3320                                 send_tsn = 1;
3321                         } else if (strrst->strrst_flags == SCTP_RESET_ADD_STREAMS) {
3322                                 if (send_tsn ||
3323                                     send_in ||
3324                                     send_out) {
3325                                         /* We can't do that and add streams */
3326                                         error = EINVAL;
3327                                         goto skip_stuff;
3328                                 }
3329                                 if (stcb->asoc.stream_reset_outstanding) {
3330                                         error = EBUSY;
3331                                         goto skip_stuff;
3332                                 }
3333                                 addstream = 1;
3334                                 /* We allocate here */
3335                                 addstrmcnt = strrst->strrst_num_streams;
3336                                 if ((int)(addstrmcnt + stcb->asoc.streamoutcnt) > 0xffff) {
3337                                         /* You can't have more than 64k */
3338                                         error = EINVAL;
3339                                         goto skip_stuff;
3340                                 }
3341                                 if ((stcb->asoc.strm_realoutsize - stcb->asoc.streamoutcnt) < addstrmcnt) {
3342                                         /* Need to allocate more */
3343                                         struct sctp_stream_out *oldstream;
3344                                         struct sctp_stream_queue_pending *sp;
3345                                         int removed;
3346
3347                                         oldstream = stcb->asoc.strmout;
3348                                         /* get some more */
3349                                         SCTP_MALLOC(stcb->asoc.strmout, struct sctp_stream_out *,
3350                                             ((stcb->asoc.streamoutcnt + addstrmcnt) * sizeof(struct sctp_stream_out)),
3351                                             SCTP_M_STRMO);
3352                                         if (stcb->asoc.strmout == NULL) {
3353                                                 stcb->asoc.strmout = oldstream;
3354                                                 error = ENOMEM;
3355                                                 goto skip_stuff;
3356                                         }
3357                                         /*
3358                                          * Ok now we proceed with copying
3359                                          * the old out stuff and
3360                                          * initializing the new stuff.
3361                                          */
3362                                         SCTP_TCB_SEND_LOCK(stcb);
3363                                         for (i = 0; i < stcb->asoc.streamoutcnt; i++) {
3364                                                 TAILQ_INIT(&stcb->asoc.strmout[i].outqueue);
3365                                                 stcb->asoc.strmout[i].next_sequence_sent = oldstream[i].next_sequence_sent;
3366                                                 stcb->asoc.strmout[i].last_msg_incomplete = oldstream[i].last_msg_incomplete;
3367                                                 stcb->asoc.strmout[i].stream_no = i;
3368                                                 if (oldstream[i].next_spoke.tqe_next) {
3369                                                         sctp_remove_from_wheel(stcb, &stcb->asoc, &oldstream[i], 1);
3370                                                         stcb->asoc.strmout[i].next_spoke.tqe_next = NULL;
3371                                                         stcb->asoc.strmout[i].next_spoke.tqe_prev = NULL;
3372                                                         removed = 1;
3373                                                 } else {
3374                                                         /* not on out wheel */
3375                                                         stcb->asoc.strmout[i].next_spoke.tqe_next = NULL;
3376                                                         stcb->asoc.strmout[i].next_spoke.tqe_prev = NULL;
3377                                                         removed = 0;
3378                                                 }
3379                                                 /*
3380                                                  * now anything on those
3381                                                  * queues?
3382                                                  */
3383                                                 while (TAILQ_EMPTY(&oldstream[i].outqueue) == 0) {
3384                                                         sp = TAILQ_FIRST(&oldstream[i].outqueue);
3385                                                         TAILQ_REMOVE(&oldstream[i].outqueue, sp, next);
3386                                                         TAILQ_INSERT_TAIL(&stcb->asoc.strmout[i].outqueue, sp, next);
3387                                                 }
3388                                                 /* Did we disrupt the wheel? */
3389                                                 if (removed) {
3390                                                         sctp_insert_on_wheel(stcb,
3391                                                             &stcb->asoc,
3392                                                             &stcb->asoc.strmout[i],
3393                                                             1);
3394                                                 }
3395                                                 /*
3396                                                  * Now move assoc pointers
3397                                                  * too
3398                                                  */
3399                                                 if (stcb->asoc.last_out_stream == &oldstream[i]) {
3400                                                         stcb->asoc.last_out_stream = &stcb->asoc.strmout[i];
3401                                                 }
3402                                                 if (stcb->asoc.locked_on_sending == &oldstream[i]) {
3403                                                         stcb->asoc.locked_on_sending = &stcb->asoc.strmout[i];
3404                                                 }
3405                                         }
3406                                         /* now the new streams */
3407                                         for (i = stcb->asoc.streamoutcnt; i < (stcb->asoc.streamoutcnt + addstrmcnt); i++) {
3408                                                 stcb->asoc.strmout[i].next_sequence_sent = 0x0;
3409                                                 TAILQ_INIT(&stcb->asoc.strmout[i].outqueue);
3410                                                 stcb->asoc.strmout[i].stream_no = i;
3411                                                 stcb->asoc.strmout[i].last_msg_incomplete = 0;
3412                                                 stcb->asoc.strmout[i].next_spoke.tqe_next = NULL;
3413                                                 stcb->asoc.strmout[i].next_spoke.tqe_prev = NULL;
3414                                         }
3415                                         stcb->asoc.strm_realoutsize = stcb->asoc.streamoutcnt + addstrmcnt;
3416                                         SCTP_FREE(oldstream, SCTP_M_STRMO);
3417                                 }
3418                                 SCTP_TCB_SEND_UNLOCK(stcb);
3419                                 goto skip_stuff;
3420                         } else {
3421                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3422                                 error = EINVAL;
3423                                 SCTP_TCB_UNLOCK(stcb);
3424                                 break;
3425                         }
3426                         for (i = 0; i < strrst->strrst_num_streams; i++) {
3427                                 if ((send_in) &&
3428
3429                                     (strrst->strrst_list[i] > stcb->asoc.streamincnt)) {
3430                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3431                                         error = EINVAL;
3432                                         goto get_out;
3433                                 }
3434                                 if ((send_out) &&
3435                                     (strrst->strrst_list[i] > stcb->asoc.streamoutcnt)) {
3436                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3437                                         error = EINVAL;
3438                                         goto get_out;
3439                                 }
3440                         }
3441         skip_stuff:
3442                         if (error) {
3443                 get_out:
3444                                 SCTP_TCB_UNLOCK(stcb);
3445                                 break;
3446                         }
3447                         error = sctp_send_str_reset_req(stcb, strrst->strrst_num_streams,
3448                             strrst->strrst_list,
3449                             send_out, (stcb->asoc.str_reset_seq_in - 3),
3450                             send_in, send_tsn, addstream, addstrmcnt);
3451
3452                         sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_REQ, SCTP_SO_LOCKED);
3453                         SCTP_TCB_UNLOCK(stcb);
3454                 }
3455                 break;
3456
3457         case SCTP_CONNECT_X:
3458                 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) {
3459                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3460                         error = EINVAL;
3461                         break;
3462                 }
3463                 error = sctp_do_connect_x(so, inp, optval, optsize, p, 0);
3464                 break;
3465
3466         case SCTP_CONNECT_X_DELAYED:
3467                 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) {
3468                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3469                         error = EINVAL;
3470                         break;
3471                 }
3472                 error = sctp_do_connect_x(so, inp, optval, optsize, p, 1);
3473                 break;
3474
3475         case SCTP_CONNECT_X_COMPLETE:
3476                 {
3477                         struct sockaddr *sa;
3478                         struct sctp_nets *net;
3479
3480                         /* FIXME MT: check correct? */
3481                         SCTP_CHECK_AND_CAST(sa, optval, struct sockaddr, optsize);
3482
3483                         /* find tcb */
3484                         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
3485                                 SCTP_INP_RLOCK(inp);
3486                                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
3487                                 if (stcb) {
3488                                         SCTP_TCB_LOCK(stcb);
3489                                         net = sctp_findnet(stcb, sa);
3490                                 }
3491                                 SCTP_INP_RUNLOCK(inp);
3492                         } else {
3493                                 /*
3494                                  * We increment here since
3495                                  * sctp_findassociation_ep_addr() wil do a
3496                                  * decrement if it finds the stcb as long as
3497                                  * the locked tcb (last argument) is NOT a
3498                                  * TCB.. aka NULL.
3499                                  */
3500                                 SCTP_INP_INCR_REF(inp);
3501                                 stcb = sctp_findassociation_ep_addr(&inp, sa, &net, NULL, NULL);
3502                                 if (stcb == NULL) {
3503                                         SCTP_INP_DECR_REF(inp);
3504                                 }
3505                         }
3506
3507                         if (stcb == NULL) {
3508                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
3509                                 error = ENOENT;
3510                                 break;
3511                         }
3512                         if (stcb->asoc.delayed_connection == 1) {
3513                                 stcb->asoc.delayed_connection = 0;
3514                                 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
3515                                 sctp_timer_stop(SCTP_TIMER_TYPE_INIT, inp, stcb,
3516                                     stcb->asoc.primary_destination,
3517                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_9);
3518                                 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
3519                         } else {
3520                                 /*
3521                                  * already expired or did not use delayed
3522                                  * connectx
3523                                  */
3524                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
3525                                 error = EALREADY;
3526                         }
3527                         SCTP_TCB_UNLOCK(stcb);
3528                 }
3529                 break;
3530         case SCTP_MAX_BURST:
3531                 {
3532                         uint8_t *burst;
3533
3534                         SCTP_CHECK_AND_CAST(burst, optval, uint8_t, optsize);
3535
3536                         SCTP_INP_WLOCK(inp);
3537                         if (*burst) {
3538                                 inp->sctp_ep.max_burst = *burst;
3539                         }
3540                         SCTP_INP_WUNLOCK(inp);
3541                 }
3542                 break;
3543         case SCTP_MAXSEG:
3544                 {
3545                         struct sctp_assoc_value *av;
3546                         int ovh;
3547
3548                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
3549                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
3550
3551                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
3552                                 ovh = SCTP_MED_OVERHEAD;
3553                         } else {
3554                                 ovh = SCTP_MED_V4_OVERHEAD;
3555                         }
3556                         if (stcb) {
3557                                 if (av->assoc_value) {
3558                                         stcb->asoc.sctp_frag_point = (av->assoc_value + ovh);
3559                                 } else {
3560                                         stcb->asoc.sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
3561                                 }
3562                                 SCTP_TCB_UNLOCK(stcb);
3563                         } else {
3564                                 SCTP_INP_WLOCK(inp);
3565                                 /*
3566                                  * FIXME MT: I think this is not in tune
3567                                  * with the API ID
3568                                  */
3569                                 if (av->assoc_value) {
3570                                         inp->sctp_frag_point = (av->assoc_value + ovh);
3571                                 } else {
3572                                         inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
3573                                 }
3574                                 SCTP_INP_WUNLOCK(inp);
3575                         }
3576                 }
3577                 break;
3578         case SCTP_EVENTS:
3579                 {
3580                         struct sctp_event_subscribe *events;
3581
3582                         SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, optsize);
3583
3584                         SCTP_INP_WLOCK(inp);
3585                         if (events->sctp_data_io_event) {
3586                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
3587                         } else {
3588                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
3589                         }
3590
3591                         if (events->sctp_association_event) {
3592                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
3593                         } else {
3594                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
3595                         }
3596
3597                         if (events->sctp_address_event) {
3598                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
3599                         } else {
3600                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
3601                         }
3602
3603                         if (events->sctp_send_failure_event) {
3604                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
3605                         } else {
3606                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
3607                         }
3608
3609                         if (events->sctp_peer_error_event) {
3610                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR);
3611                         } else {
3612                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPEERERR);
3613                         }
3614
3615                         if (events->sctp_shutdown_event) {
3616                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
3617                         } else {
3618                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
3619                         }
3620
3621                         if (events->sctp_partial_delivery_event) {
3622                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
3623                         } else {
3624                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
3625                         }
3626
3627                         if (events->sctp_adaptation_layer_event) {
3628                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
3629                         } else {
3630                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
3631                         }
3632
3633                         if (events->sctp_authentication_event) {
3634                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT);
3635                         } else {
3636                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTHEVNT);
3637                         }
3638
3639                         if (events->sctp_sender_dry_event) {
3640                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_DRYEVNT);
3641                                 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3642                                     (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
3643                                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
3644                                         if (stcb) {
3645                                                 SCTP_TCB_LOCK(stcb);
3646                                         }
3647                                         if (stcb &&
3648                                             TAILQ_EMPTY(&stcb->asoc.send_queue) &&
3649                                             TAILQ_EMPTY(&stcb->asoc.sent_queue) &&
3650                                             (stcb->asoc.stream_queue_cnt == 0)) {
3651                                                 sctp_ulp_notify(SCTP_NOTIFY_SENDER_DRY, stcb, 0, NULL, SCTP_SO_LOCKED);
3652                                         }
3653                                         if (stcb) {
3654                                                 SCTP_TCB_UNLOCK(stcb);
3655                                         }
3656                                 }
3657                         } else {
3658                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_DRYEVNT);
3659                         }
3660
3661                         if (events->sctp_stream_reset_event) {
3662                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
3663                         } else {
3664                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
3665                         }
3666                         SCTP_INP_WUNLOCK(inp);
3667                 }
3668                 break;
3669
3670         case SCTP_ADAPTATION_LAYER:
3671                 {
3672                         struct sctp_setadaptation *adap_bits;
3673
3674                         SCTP_CHECK_AND_CAST(adap_bits, optval, struct sctp_setadaptation, optsize);
3675                         SCTP_INP_WLOCK(inp);
3676                         inp->sctp_ep.adaptation_layer_indicator = adap_bits->ssb_adaptation_ind;
3677                         SCTP_INP_WUNLOCK(inp);
3678                 }
3679                 break;
3680 #ifdef SCTP_DEBUG
3681         case SCTP_SET_INITIAL_DBG_SEQ:
3682                 {
3683                         uint32_t *vvv;
3684
3685                         SCTP_CHECK_AND_CAST(vvv, optval, uint32_t, optsize);
3686                         SCTP_INP_WLOCK(inp);
3687                         inp->sctp_ep.initial_sequence_debug = *vvv;
3688                         SCTP_INP_WUNLOCK(inp);
3689                 }
3690                 break;
3691 #endif
3692         case SCTP_DEFAULT_SEND_PARAM:
3693                 {
3694                         struct sctp_sndrcvinfo *s_info;
3695
3696                         SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, optsize);
3697                         SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id);
3698
3699                         if (stcb) {
3700                                 if (s_info->sinfo_stream <= stcb->asoc.streamoutcnt) {
3701                                         memcpy(&stcb->asoc.def_send, s_info, min(optsize, sizeof(stcb->asoc.def_send)));
3702                                 } else {
3703                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3704                                         error = EINVAL;
3705                                 }
3706                                 SCTP_TCB_UNLOCK(stcb);
3707                         } else {
3708                                 SCTP_INP_WLOCK(inp);
3709                                 memcpy(&inp->def_send, s_info, min(optsize, sizeof(inp->def_send)));
3710                                 SCTP_INP_WUNLOCK(inp);
3711                         }
3712                 }
3713                 break;
3714         case SCTP_PEER_ADDR_PARAMS:
3715                 /* Applys to the specific association */
3716                 {
3717                         struct sctp_paddrparams *paddrp;
3718                         struct sctp_nets *net;
3719
3720                         SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, optsize);
3721                         SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id);
3722                         net = NULL;
3723                         if (stcb) {
3724                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address);
3725                         } else {
3726                                 /*
3727                                  * We increment here since
3728                                  * sctp_findassociation_ep_addr() wil do a
3729                                  * decrement if it finds the stcb as long as
3730                                  * the locked tcb (last argument) is NOT a
3731                                  * TCB.. aka NULL.
3732                                  */
3733                                 SCTP_INP_INCR_REF(inp);
3734                                 stcb = sctp_findassociation_ep_addr(&inp,
3735                                     (struct sockaddr *)&paddrp->spp_address,
3736                                     &net, NULL, NULL);
3737                                 if (stcb == NULL) {
3738                                         SCTP_INP_DECR_REF(inp);
3739                                 }
3740                         }
3741                         if (stcb && (net == NULL)) {
3742                                 struct sockaddr *sa;
3743
3744                                 sa = (struct sockaddr *)&paddrp->spp_address;
3745                                 if (sa->sa_family == AF_INET) {
3746                                         struct sockaddr_in *sin;
3747
3748                                         sin = (struct sockaddr_in *)sa;
3749                                         if (sin->sin_addr.s_addr) {
3750                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3751                                                 SCTP_TCB_UNLOCK(stcb);
3752                                                 error = EINVAL;
3753                                                 break;
3754                                         }
3755                                 } else if (sa->sa_family == AF_INET6) {
3756                                         struct sockaddr_in6 *sin6;
3757
3758                                         sin6 = (struct sockaddr_in6 *)sa;
3759                                         if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3760                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3761                                                 SCTP_TCB_UNLOCK(stcb);
3762                                                 error = EINVAL;
3763                                                 break;
3764                                         }
3765                                 } else {
3766                                         error = EAFNOSUPPORT;
3767                                         SCTP_TCB_UNLOCK(stcb);
3768                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
3769                                         break;
3770                                 }
3771                         }
3772                         /* sanity checks */
3773                         if ((paddrp->spp_flags & SPP_HB_ENABLE) && (paddrp->spp_flags & SPP_HB_DISABLE)) {
3774                                 if (stcb)
3775                                         SCTP_TCB_UNLOCK(stcb);
3776                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3777                                 return (EINVAL);
3778                         }
3779                         if ((paddrp->spp_flags & SPP_PMTUD_ENABLE) && (paddrp->spp_flags & SPP_PMTUD_DISABLE)) {
3780                                 if (stcb)
3781                                         SCTP_TCB_UNLOCK(stcb);
3782                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3783                                 return (EINVAL);
3784                         }
3785                         if (stcb) {
3786                                 /************************TCB SPECIFIC SET ******************/
3787                                 /*
3788                                  * do we change the timer for HB, we run
3789                                  * only one?
3790                                  */
3791                                 int ovh = 0;
3792
3793                                 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
3794                                         ovh = SCTP_MED_OVERHEAD;
3795                                 } else {
3796                                         ovh = SCTP_MED_V4_OVERHEAD;
3797                                 }
3798
3799                                 if (paddrp->spp_hbinterval)
3800                                         stcb->asoc.heart_beat_delay = paddrp->spp_hbinterval;
3801                                 else if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO)
3802                                         stcb->asoc.heart_beat_delay = 0;
3803
3804                                 /* network sets ? */
3805                                 if (net) {
3806                                         /************************NET SPECIFIC SET ******************/
3807                                         if (paddrp->spp_flags & SPP_HB_DEMAND) {
3808                                                 /* on demand HB */
3809                                                 if (sctp_send_hb(stcb, 1, net) < 0) {
3810                                                         /* asoc destroyed */
3811                                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3812                                                         error = EINVAL;
3813                                                         break;
3814                                                 }
3815                                         }
3816                                         if (paddrp->spp_flags & SPP_HB_DISABLE) {
3817                                                 net->dest_state |= SCTP_ADDR_NOHB;
3818                                         }
3819                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3820                                                 net->dest_state &= ~SCTP_ADDR_NOHB;
3821                                         }
3822                                         if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && (paddrp->spp_pathmtu >= SCTP_SMALLEST_PMTU)) {
3823                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3824                                                         sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
3825                                                             SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10);
3826                                                 }
3827                                                 if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) {
3828                                                         net->mtu = paddrp->spp_pathmtu + ovh;
3829                                                         if (net->mtu < stcb->asoc.smallest_mtu) {
3830 #ifdef SCTP_PRINT_FOR_B_AND_M
3831                                                                 SCTP_PRINTF("SCTP_PMTU_DISABLE calls sctp_pathmtu_adjustment:%d\n",
3832                                                                     net->mtu);
3833 #endif
3834                                                                 sctp_pathmtu_adjustment(inp, stcb, net, net->mtu);
3835                                                         }
3836                                                 }
3837                                         }
3838                                         if (paddrp->spp_flags & SPP_PMTUD_ENABLE) {
3839                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3840                                                         sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
3841                                                 }
3842                                         }
3843                                         if (paddrp->spp_pathmaxrxt)
3844                                                 net->failure_threshold = paddrp->spp_pathmaxrxt;
3845 #ifdef INET
3846                                         if (paddrp->spp_flags & SPP_IPV4_TOS) {
3847                                                 if (net->ro._l_addr.sin.sin_family == AF_INET) {
3848                                                         net->tos_flowlabel = paddrp->spp_ipv4_tos & 0x000000fc;
3849                                                 }
3850                                         }
3851 #endif
3852 #ifdef INET6
3853                                         if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL) {
3854                                                 if (net->ro._l_addr.sin6.sin6_family == AF_INET6) {
3855                                                         net->tos_flowlabel = paddrp->spp_ipv6_flowlabel;
3856                                                 }
3857                                         }
3858 #endif
3859                                 } else {
3860                                         /************************ASSOC ONLY -- NO NET SPECIFIC SET ******************/
3861                                         if (paddrp->spp_pathmaxrxt)
3862                                                 stcb->asoc.def_net_failure = paddrp->spp_pathmaxrxt;
3863
3864                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3865                                                 /* Turn back on the timer */
3866                                                 stcb->asoc.hb_is_disabled = 0;
3867                                                 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
3868                                         }
3869                                         if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && (paddrp->spp_pathmtu >= SCTP_SMALLEST_PMTU)) {
3870                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3871                                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3872                                                                 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
3873                                                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10);
3874                                                         }
3875                                                         if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) {
3876                                                                 net->mtu = paddrp->spp_pathmtu + ovh;
3877                                                                 if (net->mtu < stcb->asoc.smallest_mtu) {
3878 #ifdef SCTP_PRINT_FOR_B_AND_M
3879                                                                         SCTP_PRINTF("SCTP_PMTU_DISABLE calls sctp_pathmtu_adjustment:%d\n",
3880                                                                             net->mtu);
3881 #endif
3882                                                                         sctp_pathmtu_adjustment(inp, stcb, net, net->mtu);
3883                                                                 }
3884                                                         }
3885                                                 }
3886                                         }
3887                                         if (paddrp->spp_flags & SPP_PMTUD_ENABLE) {
3888                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3889                                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3890                                                                 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
3891                                                         }
3892                                                 }
3893                                         }
3894                                         if (paddrp->spp_flags & SPP_HB_DISABLE) {
3895                                                 int cnt_of_unconf = 0;
3896                                                 struct sctp_nets *lnet;
3897
3898                                                 stcb->asoc.hb_is_disabled = 1;
3899                                                 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
3900                                                         if (lnet->dest_state & SCTP_ADDR_UNCONFIRMED) {
3901                                                                 cnt_of_unconf++;
3902                                                         }
3903                                                 }
3904                                                 /*
3905                                                  * stop the timer ONLY if we
3906                                                  * have no unconfirmed
3907                                                  * addresses
3908                                                  */
3909                                                 if (cnt_of_unconf == 0) {
3910                                                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3911                                                                 sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net,
3912                                                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_11);
3913                                                         }
3914                                                 }
3915                                         }
3916                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3917                                                 /* start up the timer. */
3918                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3919                                                         sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
3920                                                 }
3921                                         }
3922 #ifdef INET
3923                                         if (paddrp->spp_flags & SPP_IPV4_TOS)
3924                                                 stcb->asoc.default_tos = paddrp->spp_ipv4_tos & 0x000000fc;
3925 #endif
3926 #ifdef INET6
3927                                         if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL)
3928                                                 stcb->asoc.default_flowlabel = paddrp->spp_ipv6_flowlabel;
3929 #endif
3930
3931                                 }
3932                                 SCTP_TCB_UNLOCK(stcb);
3933                         } else {
3934                                 /************************NO TCB, SET TO default stuff ******************/
3935                                 SCTP_INP_WLOCK(inp);
3936                                 /*
3937                                  * For the TOS/FLOWLABEL stuff you set it
3938                                  * with the options on the socket
3939                                  */
3940                                 if (paddrp->spp_pathmaxrxt) {
3941                                         inp->sctp_ep.def_net_failure = paddrp->spp_pathmaxrxt;
3942                                 }
3943                                 if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO)
3944                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = 0;
3945                                 else if (paddrp->spp_hbinterval) {
3946                                         if (paddrp->spp_hbinterval > SCTP_MAX_HB_INTERVAL)
3947                                                 paddrp->spp_hbinterval = SCTP_MAX_HB_INTERVAL;
3948                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(paddrp->spp_hbinterval);
3949                                 }
3950                                 if (paddrp->spp_flags & SPP_HB_ENABLE) {
3951                                         sctp_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
3952
3953                                 } else if (paddrp->spp_flags & SPP_HB_DISABLE) {
3954                                         sctp_feature_on(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
3955                                 }
3956                                 SCTP_INP_WUNLOCK(inp);
3957                         }
3958                 }
3959                 break;
3960         case SCTP_RTOINFO:
3961                 {
3962                         struct sctp_rtoinfo *srto;
3963                         uint32_t new_init, new_min, new_max;
3964
3965                         SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, optsize);
3966                         SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id);
3967
3968                         if (stcb) {
3969                                 if (srto->srto_initial)
3970                                         new_init = srto->srto_initial;
3971                                 else
3972                                         new_init = stcb->asoc.initial_rto;
3973                                 if (srto->srto_max)
3974                                         new_max = srto->srto_max;
3975                                 else
3976                                         new_max = stcb->asoc.maxrto;
3977                                 if (srto->srto_min)
3978                                         new_min = srto->srto_min;
3979                                 else
3980                                         new_min = stcb->asoc.minrto;
3981                                 if ((new_min <= new_init) && (new_init <= new_max)) {
3982                                         stcb->asoc.initial_rto = new_init;
3983                                         stcb->asoc.maxrto = new_max;
3984                                         stcb->asoc.minrto = new_min;
3985                                 } else {
3986                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3987                                         error = EINVAL;
3988                                 }
3989                                 SCTP_TCB_UNLOCK(stcb);
3990                         } else {
3991                                 SCTP_INP_WLOCK(inp);
3992                                 if (srto->srto_initial)
3993                                         new_init = srto->srto_initial;
3994                                 else
3995                                         new_init = inp->sctp_ep.initial_rto;
3996                                 if (srto->srto_max)
3997                                         new_max = srto->srto_max;
3998                                 else
3999                                         new_max = inp->sctp_ep.sctp_maxrto;
4000                                 if (srto->srto_min)
4001                                         new_min = srto->srto_min;
4002                                 else
4003                                         new_min = inp->sctp_ep.sctp_minrto;
4004                                 if ((new_min <= new_init) && (new_init <= new_max)) {
4005                                         inp->sctp_ep.initial_rto = new_init;
4006                                         inp->sctp_ep.sctp_maxrto = new_max;
4007                                         inp->sctp_ep.sctp_minrto = new_min;
4008                                 } else {
4009                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4010                                         error = EINVAL;
4011                                 }
4012                                 SCTP_INP_WUNLOCK(inp);
4013                         }
4014                 }
4015                 break;
4016         case SCTP_ASSOCINFO:
4017                 {
4018                         struct sctp_assocparams *sasoc;
4019
4020                         SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, optsize);
4021                         SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id);
4022                         if (sasoc->sasoc_cookie_life) {
4023                                 /* boundary check the cookie life */
4024                                 if (sasoc->sasoc_cookie_life < 1000)
4025                                         sasoc->sasoc_cookie_life = 1000;
4026                                 if (sasoc->sasoc_cookie_life > SCTP_MAX_COOKIE_LIFE) {
4027                                         sasoc->sasoc_cookie_life = SCTP_MAX_COOKIE_LIFE;
4028                                 }
4029                         }
4030                         if (stcb) {
4031                                 if (sasoc->sasoc_asocmaxrxt)
4032                                         stcb->asoc.max_send_times = sasoc->sasoc_asocmaxrxt;
4033                                 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets;
4034                                 sasoc->sasoc_peer_rwnd = 0;
4035                                 sasoc->sasoc_local_rwnd = 0;
4036                                 if (sasoc->sasoc_cookie_life) {
4037                                         stcb->asoc.cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life);
4038                                 }
4039                                 SCTP_TCB_UNLOCK(stcb);
4040                         } else {
4041                                 SCTP_INP_WLOCK(inp);
4042                                 if (sasoc->sasoc_asocmaxrxt)
4043                                         inp->sctp_ep.max_send_times = sasoc->sasoc_asocmaxrxt;
4044                                 sasoc->sasoc_number_peer_destinations = 0;
4045                                 sasoc->sasoc_peer_rwnd = 0;
4046                                 sasoc->sasoc_local_rwnd = 0;
4047                                 if (sasoc->sasoc_cookie_life) {
4048                                         inp->sctp_ep.def_cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life);
4049                                 }
4050                                 SCTP_INP_WUNLOCK(inp);
4051                         }
4052                 }
4053                 break;
4054         case SCTP_INITMSG:
4055                 {
4056                         struct sctp_initmsg *sinit;
4057
4058                         SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, optsize);
4059                         SCTP_INP_WLOCK(inp);
4060                         if (sinit->sinit_num_ostreams)
4061                                 inp->sctp_ep.pre_open_stream_count = sinit->sinit_num_ostreams;
4062
4063                         if (sinit->sinit_max_instreams)
4064                                 inp->sctp_ep.max_open_streams_intome = sinit->sinit_max_instreams;
4065
4066                         if (sinit->sinit_max_attempts)
4067                                 inp->sctp_ep.max_init_times = sinit->sinit_max_attempts;
4068
4069                         if (sinit->sinit_max_init_timeo)
4070                                 inp->sctp_ep.initial_init_rto_max = sinit->sinit_max_init_timeo;
4071                         SCTP_INP_WUNLOCK(inp);
4072                 }
4073                 break;
4074         case SCTP_PRIMARY_ADDR:
4075                 {
4076                         struct sctp_setprim *spa;
4077                         struct sctp_nets *net, *lnet;
4078
4079                         SCTP_CHECK_AND_CAST(spa, optval, struct sctp_setprim, optsize);
4080                         SCTP_FIND_STCB(inp, stcb, spa->ssp_assoc_id);
4081
4082                         net = NULL;
4083                         if (stcb) {
4084                                 net = sctp_findnet(stcb, (struct sockaddr *)&spa->ssp_addr);
4085                         } else {
4086                                 /*
4087                                  * We increment here since
4088                                  * sctp_findassociation_ep_addr() wil do a
4089                                  * decrement if it finds the stcb as long as
4090                                  * the locked tcb (last argument) is NOT a
4091                                  * TCB.. aka NULL.
4092                                  */
4093                                 SCTP_INP_INCR_REF(inp);
4094                                 stcb = sctp_findassociation_ep_addr(&inp,
4095                                     (struct sockaddr *)&spa->ssp_addr,
4096                                     &net, NULL, NULL);
4097                                 if (stcb == NULL) {
4098                                         SCTP_INP_DECR_REF(inp);
4099                                 }
4100                         }
4101
4102                         if ((stcb) && (net)) {
4103                                 if ((net != stcb->asoc.primary_destination) &&
4104                                     (!(net->dest_state & SCTP_ADDR_UNCONFIRMED))) {
4105                                         /* Ok we need to set it */
4106                                         lnet = stcb->asoc.primary_destination;
4107                                         if (sctp_set_primary_addr(stcb, (struct sockaddr *)NULL, net) == 0) {
4108                                                 if (net->dest_state & SCTP_ADDR_SWITCH_PRIMARY) {
4109                                                         net->dest_state |= SCTP_ADDR_DOUBLE_SWITCH;
4110                                                 }
4111                                                 net->dest_state |= SCTP_ADDR_SWITCH_PRIMARY;
4112                                         }
4113                                 }
4114                         } else {
4115                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4116                                 error = EINVAL;
4117                         }
4118                         if (stcb) {
4119                                 SCTP_TCB_UNLOCK(stcb);
4120                         }
4121                 }
4122                 break;
4123         case SCTP_SET_DYNAMIC_PRIMARY:
4124                 {
4125                         union sctp_sockstore *ss;
4126
4127                         error = priv_check(curthread,
4128                             PRIV_NETINET_RESERVEDPORT);
4129                         if (error)
4130                                 break;
4131
4132                         SCTP_CHECK_AND_CAST(ss, optval, union sctp_sockstore, optsize);
4133                         /* SUPER USER CHECK? */
4134                         error = sctp_dynamic_set_primary(&ss->sa, vrf_id);
4135                 }
4136                 break;
4137         case SCTP_SET_PEER_PRIMARY_ADDR:
4138                 {
4139                         struct sctp_setpeerprim *sspp;
4140
4141                         SCTP_CHECK_AND_CAST(sspp, optval, struct sctp_setpeerprim, optsize);
4142                         SCTP_FIND_STCB(inp, stcb, sspp->sspp_assoc_id);
4143                         if (stcb != NULL) {
4144                                 struct sctp_ifa *ifa;
4145
4146                                 ifa = sctp_find_ifa_by_addr((struct sockaddr *)&sspp->sspp_addr,
4147                                     stcb->asoc.vrf_id, SCTP_ADDR_NOT_LOCKED);
4148                                 if (ifa == NULL) {
4149                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4150                                         error = EINVAL;
4151                                         goto out_of_it;
4152                                 }
4153                                 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
4154                                         /*
4155                                          * Must validate the ifa found is in
4156                                          * our ep
4157                                          */
4158                                         struct sctp_laddr *laddr;
4159                                         int found = 0;
4160
4161                                         LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4162                                                 if (laddr->ifa == NULL) {
4163                                                         SCTPDBG(SCTP_DEBUG_OUTPUT1, "%s: NULL ifa\n",
4164                                                             __FUNCTION__);
4165                                                         continue;
4166                                                 }
4167                                                 if (laddr->ifa == ifa) {
4168                                                         found = 1;
4169                                                         break;
4170                                                 }
4171                                         }
4172                                         if (!found) {
4173                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4174                                                 error = EINVAL;
4175                                                 goto out_of_it;
4176                                         }
4177                                 }
4178                                 if (sctp_set_primary_ip_address_sa(stcb,
4179                                     (struct sockaddr *)&sspp->sspp_addr) != 0) {
4180                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4181                                         error = EINVAL;
4182                                 }
4183                 out_of_it:
4184                                 SCTP_TCB_UNLOCK(stcb);
4185                         } else {
4186                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4187                                 error = EINVAL;
4188                         }
4189
4190                 }
4191                 break;
4192         case SCTP_BINDX_ADD_ADDR:
4193                 {
4194                         struct sctp_getaddresses *addrs;
4195                         size_t sz;
4196                         struct thread *td;
4197
4198                         td = (struct thread *)p;
4199                         SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses,
4200                             optsize);
4201                         if (addrs->addr->sa_family == AF_INET) {
4202                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in);
4203                                 if (optsize < sz) {
4204                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4205                                         error = EINVAL;
4206                                         break;
4207                                 }
4208                                 if (td != NULL && (error = prison_local_ip4(td->td_ucred, &(((struct sockaddr_in *)(addrs->addr))->sin_addr)))) {
4209                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, error);
4210                                         break;
4211                                 }
4212 #ifdef INET6
4213                         } else if (addrs->addr->sa_family == AF_INET6) {
4214                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in6);
4215                                 if (optsize < sz) {
4216                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4217                                         error = EINVAL;
4218                                         break;
4219                                 }
4220                                 if (td != NULL && (error = prison_local_ip6(td->td_ucred, &(((struct sockaddr_in6 *)(addrs->addr))->sin6_addr),
4221                                     (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
4222                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, error);
4223                                         break;
4224                                 }
4225 #endif
4226                         } else {
4227                                 error = EAFNOSUPPORT;
4228                                 break;
4229                         }
4230                         sctp_bindx_add_address(so, inp, addrs->addr,
4231                             addrs->sget_assoc_id, vrf_id,
4232                             &error, p);
4233                 }
4234                 break;
4235         case SCTP_BINDX_REM_ADDR:
4236                 {
4237                         struct sctp_getaddresses *addrs;
4238                         size_t sz;
4239                         struct thread *td;
4240
4241                         td = (struct thread *)p;
4242
4243                         SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses, optsize);
4244                         if (addrs->addr->sa_family == AF_INET) {
4245                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in);
4246                                 if (optsize < sz) {
4247                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4248                                         error = EINVAL;
4249                                         break;
4250                                 }
4251                                 if (td != NULL && (error = prison_local_ip4(td->td_ucred, &(((struct sockaddr_in *)(addrs->addr))->sin_addr)))) {
4252                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, error);
4253                                         break;
4254                                 }
4255 #ifdef INET6
4256                         } else if (addrs->addr->sa_family == AF_INET6) {
4257                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in6);
4258                                 if (optsize < sz) {
4259                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4260                                         error = EINVAL;
4261                                         break;
4262                                 }
4263                                 if (td != NULL && (error = prison_local_ip6(td->td_ucred, &(((struct sockaddr_in6 *)(addrs->addr))->sin6_addr),
4264                                     (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
4265                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, error);
4266                                         break;
4267                                 }
4268 #endif
4269                         } else {
4270                                 error = EAFNOSUPPORT;
4271                                 break;
4272                         }
4273                         sctp_bindx_delete_address(so, inp, addrs->addr,
4274                             addrs->sget_assoc_id, vrf_id,
4275                             &error);
4276                 }
4277                 break;
4278         default:
4279                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
4280                 error = ENOPROTOOPT;
4281                 break;
4282         }                       /* end switch (opt) */
4283         return (error);
4284 }
4285
4286 int
4287 sctp_ctloutput(struct socket *so, struct sockopt *sopt)
4288 {
4289         void *optval = NULL;
4290         size_t optsize = 0;
4291         struct sctp_inpcb *inp;
4292         void *p;
4293         int error = 0;
4294
4295         inp = (struct sctp_inpcb *)so->so_pcb;
4296         if (inp == 0) {
4297                 /* I made the same as TCP since we are not setup? */
4298                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4299                 return (ECONNRESET);
4300         }
4301         if (sopt->sopt_level != IPPROTO_SCTP) {
4302                 /* wrong proto level... send back up to IP */
4303 #ifdef INET6
4304                 if (INP_CHECK_SOCKAF(so, AF_INET6))
4305                         error = ip6_ctloutput(so, sopt);
4306                 else
4307 #endif                          /* INET6 */
4308                         error = ip_ctloutput(so, sopt);
4309                 return (error);
4310         }
4311         optsize = sopt->sopt_valsize;
4312         if (optsize) {
4313                 SCTP_MALLOC(optval, void *, optsize, SCTP_M_SOCKOPT);
4314                 if (optval == NULL) {
4315                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOBUFS);
4316                         return (ENOBUFS);
4317                 }
4318                 error = sooptcopyin(sopt, optval, optsize, optsize);
4319                 if (error) {
4320                         SCTP_FREE(optval, SCTP_M_SOCKOPT);
4321                         goto out;
4322                 }
4323         }
4324         p = (void *)sopt->sopt_td;
4325         if (sopt->sopt_dir == SOPT_SET) {
4326                 error = sctp_setopt(so, sopt->sopt_name, optval, optsize, p);
4327         } else if (sopt->sopt_dir == SOPT_GET) {
4328                 error = sctp_getopt(so, sopt->sopt_name, optval, &optsize, p);
4329         } else {
4330                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4331                 error = EINVAL;
4332         }
4333         if ((error == 0) && (optval != NULL)) {
4334                 error = sooptcopyout(sopt, optval, optsize);
4335                 SCTP_FREE(optval, SCTP_M_SOCKOPT);
4336         } else if (optval != NULL) {
4337                 SCTP_FREE(optval, SCTP_M_SOCKOPT);
4338         }
4339 out:
4340         return (error);
4341 }
4342
4343
4344 static int
4345 sctp_connect(struct socket *so, struct sockaddr *addr, struct thread *p)
4346 {
4347         int error = 0;
4348         int create_lock_on = 0;
4349         uint32_t vrf_id;
4350         struct sctp_inpcb *inp;
4351         struct sctp_tcb *stcb = NULL;
4352
4353         inp = (struct sctp_inpcb *)so->so_pcb;
4354         if (inp == 0) {
4355                 /* I made the same as TCP since we are not setup? */
4356                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4357                 return (ECONNRESET);
4358         }
4359         if (addr == NULL) {
4360                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4361                 return EINVAL;
4362         }
4363 #ifdef INET6
4364         if (addr->sa_family == AF_INET6) {
4365                 struct sockaddr_in6 *sin6p;
4366
4367                 if (addr->sa_len != sizeof(struct sockaddr_in6)) {
4368                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4369                         return (EINVAL);
4370                 }
4371                 sin6p = (struct sockaddr_in6 *)addr;
4372                 if (p != NULL && (error = prison_remote_ip6(p->td_ucred, &sin6p->sin6_addr)) != 0) {
4373                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
4374                         return (error);
4375                 }
4376         } else
4377 #endif
4378         if (addr->sa_family == AF_INET) {
4379                 struct sockaddr_in *sinp;
4380
4381                 if (addr->sa_len != sizeof(struct sockaddr_in)) {
4382                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4383                         return (EINVAL);
4384                 }
4385                 sinp = (struct sockaddr_in *)addr;
4386                 if (p != NULL && (error = prison_remote_ip4(p->td_ucred, &sinp->sin_addr)) != 0) {
4387                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
4388                         return (error);
4389                 }
4390         } else {
4391                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EAFNOSUPPORT);
4392                 return (EAFNOSUPPORT);
4393         }
4394         SCTP_INP_INCR_REF(inp);
4395         SCTP_ASOC_CREATE_LOCK(inp);
4396         create_lock_on = 1;
4397
4398
4399         if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4400             (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4401                 /* Should I really unlock ? */
4402                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EFAULT);
4403                 error = EFAULT;
4404                 goto out_now;
4405         }
4406 #ifdef INET6
4407         if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) &&
4408             (addr->sa_family == AF_INET6)) {
4409                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4410                 error = EINVAL;
4411                 goto out_now;
4412         }
4413 #endif                          /* INET6 */
4414         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
4415             SCTP_PCB_FLAGS_UNBOUND) {
4416                 /* Bind a ephemeral port */
4417                 error = sctp_inpcb_bind(so, NULL, NULL, p);
4418                 if (error) {
4419                         goto out_now;
4420                 }
4421         }
4422         /* Now do we connect? */
4423         if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
4424             (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE))) {
4425                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4426                 error = EINVAL;
4427                 goto out_now;
4428         }
4429         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
4430             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
4431                 /* We are already connected AND the TCP model */
4432                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
4433                 error = EADDRINUSE;
4434                 goto out_now;
4435         }
4436         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4437                 SCTP_INP_RLOCK(inp);
4438                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
4439                 SCTP_INP_RUNLOCK(inp);
4440         } else {
4441                 /*
4442                  * We increment here since sctp_findassociation_ep_addr()
4443                  * will do a decrement if it finds the stcb as long as the
4444                  * locked tcb (last argument) is NOT a TCB.. aka NULL.
4445                  */
4446                 SCTP_INP_INCR_REF(inp);
4447                 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL);
4448                 if (stcb == NULL) {
4449                         SCTP_INP_DECR_REF(inp);
4450                 } else {
4451                         SCTP_TCB_UNLOCK(stcb);
4452                 }
4453         }
4454         if (stcb != NULL) {
4455                 /* Already have or am bring up an association */
4456                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
4457                 error = EALREADY;
4458                 goto out_now;
4459         }
4460         vrf_id = inp->def_vrf_id;
4461         /* We are GOOD to go */
4462         stcb = sctp_aloc_assoc(inp, addr, &error, 0, vrf_id, p);
4463         if (stcb == NULL) {
4464                 /* Gak! no memory */
4465                 goto out_now;
4466         }
4467         if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
4468                 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
4469                 /* Set the connected flag so we can queue data */
4470                 SOCKBUF_LOCK(&so->so_rcv);
4471                 so->so_rcv.sb_state &= ~SBS_CANTRCVMORE;
4472                 SOCKBUF_UNLOCK(&so->so_rcv);
4473                 SOCKBUF_LOCK(&so->so_snd);
4474                 so->so_snd.sb_state &= ~SBS_CANTSENDMORE;
4475                 SOCKBUF_UNLOCK(&so->so_snd);
4476                 SOCK_LOCK(so);
4477                 so->so_state &= ~SS_ISDISCONNECTING;
4478                 SOCK_UNLOCK(so);
4479                 soisconnecting(so);
4480         }
4481         SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_COOKIE_WAIT);
4482         (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
4483
4484         /* initialize authentication parameters for the assoc */
4485         sctp_initialize_auth_params(inp, stcb);
4486
4487         sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
4488         SCTP_TCB_UNLOCK(stcb);
4489 out_now:
4490         if (create_lock_on) {
4491                 SCTP_ASOC_CREATE_UNLOCK(inp);
4492         }
4493         SCTP_INP_DECR_REF(inp);
4494         return error;
4495 }
4496
4497 int
4498 sctp_listen(struct socket *so, int backlog, struct thread *p)
4499 {
4500         /*
4501          * Note this module depends on the protocol processing being called
4502          * AFTER any socket level flags and backlog are applied to the
4503          * socket. The traditional way that the socket flags are applied is
4504          * AFTER protocol processing. We have made a change to the
4505          * sys/kern/uipc_socket.c module to reverse this but this MUST be in
4506          * place if the socket API for SCTP is to work properly.
4507          */
4508
4509         int error = 0;
4510         struct sctp_inpcb *inp;
4511
4512         inp = (struct sctp_inpcb *)so->so_pcb;
4513         if (inp == 0) {
4514                 /* I made the same as TCP since we are not setup? */
4515                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4516                 return (ECONNRESET);
4517         }
4518         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
4519                 /* See if we have a listener */
4520                 struct sctp_inpcb *tinp;
4521                 union sctp_sockstore store, *sp;
4522
4523                 sp = &store;
4524                 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
4525                         /* not bound all */
4526                         struct sctp_laddr *laddr;
4527
4528                         LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4529                                 memcpy(&store, &laddr->ifa->address, sizeof(store));
4530                                 sp->sin.sin_port = inp->sctp_lport;
4531                                 tinp = sctp_pcb_findep(&sp->sa, 0, 0, inp->def_vrf_id);
4532                                 if (tinp && (tinp != inp) &&
4533                                     ((tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) == 0) &&
4534                                     ((tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
4535                                     (tinp->sctp_socket->so_qlimit)) {
4536                                         /*
4537                                          * we have a listener already and
4538                                          * its not this inp.
4539                                          */
4540                                         SCTP_INP_DECR_REF(tinp);
4541                                         return (EADDRINUSE);
4542                                 } else if (tinp) {
4543                                         SCTP_INP_DECR_REF(tinp);
4544                                 }
4545                         }
4546                 } else {
4547                         /* Setup a local addr bound all */
4548                         memset(&store, 0, sizeof(store));
4549                         store.sin.sin_port = inp->sctp_lport;
4550 #ifdef INET6
4551                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
4552                                 store.sa.sa_family = AF_INET6;
4553                                 store.sa.sa_len = sizeof(struct sockaddr_in6);
4554                         }
4555 #endif
4556                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
4557                                 store.sa.sa_family = AF_INET;
4558                                 store.sa.sa_len = sizeof(struct sockaddr_in);
4559                         }
4560                         tinp = sctp_pcb_findep(&sp->sa, 0, 0, inp->def_vrf_id);
4561                         if (tinp && (tinp != inp) &&
4562                             ((tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) == 0) &&
4563                             ((tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
4564                             (tinp->sctp_socket->so_qlimit)) {
4565                                 /*
4566                                  * we have a listener already and its not
4567                                  * this inp.
4568                                  */
4569                                 SCTP_INP_DECR_REF(tinp);
4570                                 return (EADDRINUSE);
4571                         } else if (tinp) {
4572                                 SCTP_INP_DECR_REF(inp);
4573                         }
4574                 }
4575         }
4576         SCTP_INP_RLOCK(inp);
4577 #ifdef SCTP_LOCK_LOGGING
4578         if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOCK_LOGGING_ENABLE) {
4579                 sctp_log_lock(inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_SOCK);
4580         }
4581 #endif
4582         SOCK_LOCK(so);
4583         error = solisten_proto_check(so);
4584         if (error) {
4585                 SOCK_UNLOCK(so);
4586                 SCTP_INP_RUNLOCK(inp);
4587                 return (error);
4588         }
4589         if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
4590             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
4591                 /*
4592                  * The unlucky case - We are in the tcp pool with this guy.
4593                  * - Someone else is in the main inp slot. - We must move
4594                  * this guy (the listener) to the main slot - We must then
4595                  * move the guy that was listener to the TCP Pool.
4596                  */
4597                 if (sctp_swap_inpcb_for_listen(inp)) {
4598                         goto in_use;
4599                 }
4600         }
4601         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
4602             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
4603                 /* We are already connected AND the TCP model */
4604 in_use:
4605                 SCTP_INP_RUNLOCK(inp);
4606                 SOCK_UNLOCK(so);
4607                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
4608                 return (EADDRINUSE);
4609         }
4610         SCTP_INP_RUNLOCK(inp);
4611         if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4612                 /* We must do a bind. */
4613                 SOCK_UNLOCK(so);
4614                 if ((error = sctp_inpcb_bind(so, NULL, NULL, p))) {
4615                         /* bind error, probably perm */
4616                         return (error);
4617                 }
4618                 SOCK_LOCK(so);
4619         }
4620         /* It appears for 7.0 and on, we must always call this. */
4621         solisten_proto(so, backlog);
4622         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
4623                 /* remove the ACCEPTCONN flag for one-to-many sockets */
4624                 so->so_options &= ~SO_ACCEPTCONN;
4625         }
4626         if (backlog == 0) {
4627                 /* turning off listen */
4628                 so->so_options &= ~SO_ACCEPTCONN;
4629         }
4630         SOCK_UNLOCK(so);
4631         return (error);
4632 }
4633
4634 static int sctp_defered_wakeup_cnt = 0;
4635
4636 int
4637 sctp_accept(struct socket *so, struct sockaddr **addr)
4638 {
4639         struct sctp_tcb *stcb;
4640         struct sctp_inpcb *inp;
4641         union sctp_sockstore store;
4642
4643 #ifdef INET6
4644         int error;
4645
4646 #endif
4647         inp = (struct sctp_inpcb *)so->so_pcb;
4648
4649         if (inp == 0) {
4650                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4651                 return (ECONNRESET);
4652         }
4653         SCTP_INP_RLOCK(inp);
4654         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
4655                 SCTP_INP_RUNLOCK(inp);
4656                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
4657                 return (EOPNOTSUPP);
4658         }
4659         if (so->so_state & SS_ISDISCONNECTED) {
4660                 SCTP_INP_RUNLOCK(inp);
4661                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ECONNABORTED);
4662                 return (ECONNABORTED);
4663         }
4664         stcb = LIST_FIRST(&inp->sctp_asoc_list);
4665         if (stcb == NULL) {
4666                 SCTP_INP_RUNLOCK(inp);
4667                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4668                 return (ECONNRESET);
4669         }
4670         SCTP_TCB_LOCK(stcb);
4671         SCTP_INP_RUNLOCK(inp);
4672         store = stcb->asoc.primary_destination->ro._l_addr;
4673         stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4674         SCTP_TCB_UNLOCK(stcb);
4675         switch (store.sa.sa_family) {
4676         case AF_INET:
4677                 {
4678                         struct sockaddr_in *sin;
4679
4680                         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
4681                         sin->sin_family = AF_INET;
4682                         sin->sin_len = sizeof(*sin);
4683                         sin->sin_port = ((struct sockaddr_in *)&store)->sin_port;
4684                         sin->sin_addr = ((struct sockaddr_in *)&store)->sin_addr;
4685                         *addr = (struct sockaddr *)sin;
4686                         break;
4687                 }
4688 #ifdef INET6
4689         case AF_INET6:
4690                 {
4691                         struct sockaddr_in6 *sin6;
4692
4693                         SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
4694                         sin6->sin6_family = AF_INET6;
4695                         sin6->sin6_len = sizeof(*sin6);
4696                         sin6->sin6_port = ((struct sockaddr_in6 *)&store)->sin6_port;
4697
4698                         sin6->sin6_addr = ((struct sockaddr_in6 *)&store)->sin6_addr;
4699                         if ((error = sa6_recoverscope(sin6)) != 0) {
4700                                 SCTP_FREE_SONAME(sin6);
4701                                 return (error);
4702                         }
4703                         *addr = (struct sockaddr *)sin6;
4704                         break;
4705                 }
4706 #endif
4707         default:
4708                 /* TSNH */
4709                 break;
4710         }
4711         /* Wake any delayed sleep action */
4712         if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) {
4713                 SCTP_INP_WLOCK(inp);
4714                 inp->sctp_flags &= ~SCTP_PCB_FLAGS_DONT_WAKE;
4715                 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT) {
4716                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
4717                         SCTP_INP_WUNLOCK(inp);
4718                         SOCKBUF_LOCK(&inp->sctp_socket->so_snd);
4719                         if (sowriteable(inp->sctp_socket)) {
4720                                 sowwakeup_locked(inp->sctp_socket);
4721                         } else {
4722                                 SOCKBUF_UNLOCK(&inp->sctp_socket->so_snd);
4723                         }
4724                         SCTP_INP_WLOCK(inp);
4725                 }
4726                 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT) {
4727                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
4728                         SCTP_INP_WUNLOCK(inp);
4729                         SOCKBUF_LOCK(&inp->sctp_socket->so_rcv);
4730                         if (soreadable(inp->sctp_socket)) {
4731                                 sctp_defered_wakeup_cnt++;
4732                                 sorwakeup_locked(inp->sctp_socket);
4733                         } else {
4734                                 SOCKBUF_UNLOCK(&inp->sctp_socket->so_rcv);
4735                         }
4736                         SCTP_INP_WLOCK(inp);
4737                 }
4738                 SCTP_INP_WUNLOCK(inp);
4739         }
4740         if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
4741                 SCTP_TCB_LOCK(stcb);
4742                 sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_7);
4743         }
4744         return (0);
4745 }
4746
4747 int
4748 sctp_ingetaddr(struct socket *so, struct sockaddr **addr)
4749 {
4750         struct sockaddr_in *sin;
4751         uint32_t vrf_id;
4752         struct sctp_inpcb *inp;
4753         struct sctp_ifa *sctp_ifa;
4754
4755         /*
4756          * Do the malloc first in case it blocks.
4757          */
4758         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
4759         sin->sin_family = AF_INET;
4760         sin->sin_len = sizeof(*sin);
4761         inp = (struct sctp_inpcb *)so->so_pcb;
4762         if (!inp) {
4763                 SCTP_FREE_SONAME(sin);
4764                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4765                 return ECONNRESET;
4766         }
4767         SCTP_INP_RLOCK(inp);
4768         sin->sin_port = inp->sctp_lport;
4769         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
4770                 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4771                         struct sctp_tcb *stcb;
4772                         struct sockaddr_in *sin_a;
4773                         struct sctp_nets *net;
4774                         int fnd;
4775
4776                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
4777                         if (stcb == NULL) {
4778                                 goto notConn;
4779                         }
4780                         fnd = 0;
4781                         sin_a = NULL;
4782                         SCTP_TCB_LOCK(stcb);
4783                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
4784                                 sin_a = (struct sockaddr_in *)&net->ro._l_addr;
4785                                 if (sin_a == NULL)
4786                                         /* this will make coverity happy */
4787                                         continue;
4788
4789                                 if (sin_a->sin_family == AF_INET) {
4790                                         fnd = 1;
4791                                         break;
4792                                 }
4793                         }
4794                         if ((!fnd) || (sin_a == NULL)) {
4795                                 /* punt */
4796                                 SCTP_TCB_UNLOCK(stcb);
4797                                 goto notConn;
4798                         }
4799                         vrf_id = inp->def_vrf_id;
4800                         sctp_ifa = sctp_source_address_selection(inp,
4801                             stcb,
4802                             (sctp_route_t *) & net->ro,
4803                             net, 0, vrf_id);
4804                         if (sctp_ifa) {
4805                                 sin->sin_addr = sctp_ifa->address.sin.sin_addr;
4806                                 sctp_free_ifa(sctp_ifa);
4807                         }
4808                         SCTP_TCB_UNLOCK(stcb);
4809                 } else {
4810                         /* For the bound all case you get back 0 */
4811         notConn:
4812                         sin->sin_addr.s_addr = 0;
4813                 }
4814
4815         } else {
4816                 /* Take the first IPv4 address in the list */
4817                 struct sctp_laddr *laddr;
4818                 int fnd = 0;
4819
4820                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4821                         if (laddr->ifa->address.sa.sa_family == AF_INET) {
4822                                 struct sockaddr_in *sin_a;
4823
4824                                 sin_a = (struct sockaddr_in *)&laddr->ifa->address.sa;
4825                                 sin->sin_addr = sin_a->sin_addr;
4826                                 fnd = 1;
4827                                 break;
4828                         }
4829                 }
4830                 if (!fnd) {
4831                         SCTP_FREE_SONAME(sin);
4832                         SCTP_INP_RUNLOCK(inp);
4833                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
4834                         return ENOENT;
4835                 }
4836         }
4837         SCTP_INP_RUNLOCK(inp);
4838         (*addr) = (struct sockaddr *)sin;
4839         return (0);
4840 }
4841
4842 int
4843 sctp_peeraddr(struct socket *so, struct sockaddr **addr)
4844 {
4845         struct sockaddr_in *sin = (struct sockaddr_in *)*addr;
4846         int fnd;
4847         struct sockaddr_in *sin_a;
4848         struct sctp_inpcb *inp;
4849         struct sctp_tcb *stcb;
4850         struct sctp_nets *net;
4851
4852         /* Do the malloc first in case it blocks. */
4853         inp = (struct sctp_inpcb *)so->so_pcb;
4854         if ((inp == NULL) ||
4855             ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) {
4856                 /* UDP type and listeners will drop out here */
4857                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
4858                 return (ENOTCONN);
4859         }
4860         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
4861         sin->sin_family = AF_INET;
4862         sin->sin_len = sizeof(*sin);
4863
4864         /* We must recapture incase we blocked */
4865         inp = (struct sctp_inpcb *)so->so_pcb;
4866         if (!inp) {
4867                 SCTP_FREE_SONAME(sin);
4868                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4869                 return ECONNRESET;
4870         }
4871         SCTP_INP_RLOCK(inp);
4872         stcb = LIST_FIRST(&inp->sctp_asoc_list);
4873         if (stcb) {
4874                 SCTP_TCB_LOCK(stcb);
4875         }
4876         SCTP_INP_RUNLOCK(inp);
4877         if (stcb == NULL) {
4878                 SCTP_FREE_SONAME(sin);
4879                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4880                 return ECONNRESET;
4881         }
4882         fnd = 0;
4883         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
4884                 sin_a = (struct sockaddr_in *)&net->ro._l_addr;
4885                 if (sin_a->sin_family == AF_INET) {
4886                         fnd = 1;
4887                         sin->sin_port = stcb->rport;
4888                         sin->sin_addr = sin_a->sin_addr;
4889                         break;
4890                 }
4891         }
4892         SCTP_TCB_UNLOCK(stcb);
4893         if (!fnd) {
4894                 /* No IPv4 address */
4895                 SCTP_FREE_SONAME(sin);
4896                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
4897                 return ENOENT;
4898         }
4899         (*addr) = (struct sockaddr *)sin;
4900         return (0);
4901 }
4902
4903 struct pr_usrreqs sctp_usrreqs = {
4904         .pru_abort = sctp_abort,
4905         .pru_accept = sctp_accept,
4906         .pru_attach = sctp_attach,
4907         .pru_bind = sctp_bind,
4908         .pru_connect = sctp_connect,
4909         .pru_control = in_control,
4910         .pru_close = sctp_close,
4911         .pru_detach = sctp_close,
4912         .pru_sopoll = sopoll_generic,
4913         .pru_flush = sctp_flush,
4914         .pru_disconnect = sctp_disconnect,
4915         .pru_listen = sctp_listen,
4916         .pru_peeraddr = sctp_peeraddr,
4917         .pru_send = sctp_sendm,
4918         .pru_shutdown = sctp_shutdown,
4919         .pru_sockaddr = sctp_ingetaddr,
4920         .pru_sosend = sctp_sosend,
4921         .pru_soreceive = sctp_soreceive
4922 };