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