sys/netinet/sctp_usrreq.c

   1 /*-
   2  * Copyright (c) 2001-2007, 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 #include <netinet6/sctp6_var.h>
  42 #endif
  43 #include <netinet/sctp_sysctl.h>
  44 #include <netinet/sctp_output.h>
  45 #include <netinet/sctp_uio.h>
  46 #include <netinet/sctp_asconf.h>
  47 #include <netinet/sctputil.h>
  48 #include <netinet/sctp_indata.h>
  49 #include <netinet/sctp_timer.h>
  50 #include <netinet/sctp_auth.h>
  51 #include <netinet/sctp_bsd_addr.h>
  52 #include <netinet/sctp_cc_functions.h>
  53
  54
  55
  56
  57 void
  58 sctp_init(void)
  59 {
  60         /* Init the SCTP pcb in sctp_pcb.c */
  61         u_long sb_max_adj;
  62
  63         sctp_pcb_init();
  64
  65
  66         if ((nmbclusters / 8) > SCTP_ASOC_MAX_CHUNKS_ON_QUEUE)
  67                 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_sendspace = min((min(SB_MAX, 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_recvspace = sctp_sendspace;
  81
  82 }
  83
  84
  85
  86 /*
  87  * cleanup of the sctppcbinfo structure.
  88  * Assumes that the sctppcbinfo lock is held.
  89  */
  90 void
  91 sctp_pcbinfo_cleanup(void)
  92 {
  93         /* free the hash tables */
  94         if (sctppcbinfo.sctp_asochash != NULL)
  95                 SCTP_HASH_FREE(sctppcbinfo.sctp_asochash, sctppcbinfo.hashasocmark);
  96         if (sctppcbinfo.sctp_ephash != NULL)
  97                 SCTP_HASH_FREE(sctppcbinfo.sctp_ephash, sctppcbinfo.hashmark);
  98         if (sctppcbinfo.sctp_tcpephash != NULL)
  99                 SCTP_HASH_FREE(sctppcbinfo.sctp_tcpephash, sctppcbinfo.hashtcpmark);
 100         if (sctppcbinfo.sctp_restarthash != NULL)
 101                 SCTP_HASH_FREE(sctppcbinfo.sctp_restarthash, sctppcbinfo.hashrestartmark);
 102 }
 103
 104
 105 static void
 106 sctp_pathmtu_adjustment(struct sctp_inpcb *inp,
 107     struct sctp_tcb *stcb,
 108     struct sctp_nets *net,
 109     uint16_t nxtsz)
 110 {
 111         struct sctp_tmit_chunk *chk;
 112
 113         /* Adjust that too */
 114         stcb->asoc.smallest_mtu = nxtsz;
 115         /* now off to subtract IP_DF flag if needed */
 116 #ifdef SCTP_PRINT_FOR_B_AND_M
 117         SCTP_PRINTF("sctp_pathmtu_adjust called inp:%p stcb:%p net:%p nxtsz:%d\n",
 118             inp, stcb, net, nxtsz);
 119 #endif
 120         TAILQ_FOREACH(chk, &stcb->asoc.send_queue, sctp_next) {
 121                 if ((chk->send_size + IP_HDR_SIZE) > nxtsz) {
 122                         chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
 123                 }
 124         }
 125         TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
 126                 if ((chk->send_size + IP_HDR_SIZE) > nxtsz) {
 127                         /*
 128                          * For this guy we also mark for immediate resend
 129                          * since we sent to big of chunk
 130                          */
 131                         chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
 132                         if (chk->sent != SCTP_DATAGRAM_RESEND) {
 133                                 sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt);
 134                         }
 135                         chk->sent = SCTP_DATAGRAM_RESEND;
 136                         chk->rec.data.doing_fast_retransmit = 0;
 137                         if (sctp_logging_level & SCTP_FLIGHT_LOGGING_ENABLE) {
 138                                 sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_PMTU,
 139                                     chk->whoTo->flight_size,
 140                                     chk->book_size,
 141                                     (uintptr_t) chk->whoTo,
 142                                     chk->rec.data.TSN_seq);
 143                         }
 144                         /* Clear any time so NO RTT is being done */
 145                         chk->do_rtt = 0;
 146                         sctp_flight_size_decrease(chk);
 147                         sctp_total_flight_decrease(stcb, chk);
 148                 }
 149         }
 150 }
 151
 152 static void
 153 sctp_notify_mbuf(struct sctp_inpcb *inp,
 154     struct sctp_tcb *stcb,
 155     struct sctp_nets *net,
 156     struct ip *ip,
 157     struct sctphdr *sh)
 158 {
 159         struct icmp *icmph;
 160         int totsz, tmr_stopped = 0;
 161         uint16_t nxtsz;
 162
 163         /* protection */
 164         if ((inp == NULL) || (stcb == NULL) || (net == NULL) ||
 165             (ip == NULL) || (sh == NULL)) {
 166                 if (stcb != NULL) {
 167                         SCTP_TCB_UNLOCK(stcb);
 168                 }
 169                 return;
 170         }
 171         /* First job is to verify the vtag matches what I would send */
 172         if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) {
 173                 SCTP_TCB_UNLOCK(stcb);
 174                 return;
 175         }
 176         icmph = (struct icmp *)((caddr_t)ip - (sizeof(struct icmp) -
 177             sizeof(struct ip)));
 178         if (icmph->icmp_type != ICMP_UNREACH) {
 179                 /* We only care about unreachable */
 180                 SCTP_TCB_UNLOCK(stcb);
 181                 return;
 182         }
 183         if (icmph->icmp_code != ICMP_UNREACH_NEEDFRAG) {
 184                 /* not a unreachable message due to frag. */
 185                 SCTP_TCB_UNLOCK(stcb);
 186                 return;
 187         }
 188         totsz = ip->ip_len;
 189
 190         nxtsz = ntohs(icmph->icmp_seq);
 191         if (nxtsz == 0) {
 192                 /*
 193                  * old type router that does not tell us what the next size
 194                  * mtu is. Rats we will have to guess (in a educated fashion
 195                  * of course)
 196                  */
 197                 nxtsz = find_next_best_mtu(totsz);
 198         }
 199         /* Stop any PMTU timer */
 200         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
 201                 tmr_stopped = 1;
 202                 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
 203                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_1);
 204         }
 205         /* Adjust destination size limit */
 206         if (net->mtu > nxtsz) {
 207                 net->mtu = nxtsz;
 208         }
 209         /* now what about the ep? */
 210         if (stcb->asoc.smallest_mtu > nxtsz) {
 211 #ifdef SCTP_PRINT_FOR_B_AND_M
 212                 SCTP_PRINTF("notify_mbuf (ICMP) calls sctp_pathmtu_adjust mtu:%d\n",
 213                     nxtsz);
 214 #endif
 215                 sctp_pathmtu_adjustment(inp, stcb, net, nxtsz);
 216         }
 217         if (tmr_stopped)
 218                 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
 219
 220         SCTP_TCB_UNLOCK(stcb);
 221 }
 222
 223
 224 void
 225 sctp_notify(struct sctp_inpcb *inp,
 226     int error,
 227     struct sctphdr *sh,
 228     struct sockaddr *to,
 229     struct sctp_tcb *stcb,
 230     struct sctp_nets *net)
 231 {
 232         /* protection */
 233         if ((inp == NULL) || (stcb == NULL) || (net == NULL) ||
 234             (sh == NULL) || (to == NULL)) {
 235                 return;
 236         }
 237         /* First job is to verify the vtag matches what I would send */
 238         if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) {
 239                 return;
 240         }
 241         /* FIX ME FIX ME PROTOPT i.e. no SCTP should ALWAYS be an ABORT */
 242
 243         if ((error == EHOSTUNREACH) ||  /* Host is not reachable */
 244             (error == EHOSTDOWN) ||     /* Host is down */
 245             (error == ECONNREFUSED) ||  /* Host refused the connection, (not
 246                                          * an abort?) */
 247             (error == ENOPROTOOPT)      /* SCTP is not present on host */
 248             ) {
 249                 /*
 250                  * Hmm reachablity problems we must examine closely. If its
 251                  * not reachable, we may have lost a network. Or if there is
 252                  * NO protocol at the other end named SCTP. well we consider
 253                  * it a OOTB abort.
 254                  */
 255                 if ((error == EHOSTUNREACH) || (error == EHOSTDOWN)) {
 256                         if (net->dest_state & SCTP_ADDR_REACHABLE) {
 257                                 /* Ok that destination is NOT reachable */
 258                                 SCTP_PRINTF("ICMP (thresh %d/%d) takes interface %p down\n",
 259                                     net->error_count,
 260                                     net->failure_threshold,
 261                                     net);
 262
 263                                 net->dest_state &= ~SCTP_ADDR_REACHABLE;
 264                                 net->dest_state |= SCTP_ADDR_NOT_REACHABLE;
 265                                 /*
 266                                  * JRS 5/14/07 - If a destination is
 267                                  * unreachable, the PF bit is turned off.
 268                                  * This allows an unambiguous use of the PF
 269                                  * bit for destinations that are reachable
 270                                  * but potentially failed. If the
 271                                  * destination is set to the unreachable
 272                                  * state, also set the destination to the PF
 273                                  * state.
 274                                  */
 275                                 /*
 276                                  * Add debug message here if destination is
 277                                  * not in PF state.
 278                                  */
 279                                 /* Stop any running T3 timers here? */
 280                                 if (sctp_cmt_on_off && sctp_cmt_pf) {
 281                                         net->dest_state &= ~SCTP_ADDR_PF;
 282                                         SCTPDBG(SCTP_DEBUG_TIMER4, "Destination %p moved from PF to unreachable.\n",
 283                                             net);
 284                                 }
 285                                 net->error_count = net->failure_threshold + 1;
 286                                 sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN,
 287                                     stcb, SCTP_FAILED_THRESHOLD,
 288                                     (void *)net);
 289                         }
 290                         if (stcb) {
 291                                 SCTP_TCB_UNLOCK(stcb);
 292                         }
 293                 } else {
 294                         /*
 295                          * Here the peer is either playing tricks on us,
 296                          * including an address that belongs to someone who
 297                          * does not support SCTP OR was a userland
 298                          * implementation that shutdown and now is dead. In
 299                          * either case treat it like a OOTB abort with no
 300                          * TCB
 301                          */
 302                         sctp_abort_notification(stcb, SCTP_PEER_FAULTY);
 303                         sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_2);
 304                         /* no need to unlock here, since the TCB is gone */
 305                 }
 306         } else {
 307                 /* Send all others to the app */
 308                 if (stcb) {
 309                         SCTP_TCB_UNLOCK(stcb);
 310                 }
 311                 if (inp->sctp_socket) {
 312 #ifdef SCTP_LOCK_LOGGING
 313                         if (sctp_logging_level & SCTP_LOCK_LOGGING_ENABLE) {
 314                                 sctp_log_lock(inp, stcb, SCTP_LOG_LOCK_SOCK);
 315                         }
 316 #endif
 317                         SOCK_LOCK(inp->sctp_socket);
 318                         inp->sctp_socket->so_error = error;
 319                         sctp_sowwakeup(inp, inp->sctp_socket);
 320                         SOCK_UNLOCK(inp->sctp_socket);
 321                 }
 322         }
 323 }
 324
 325 void
 326 sctp_ctlinput(cmd, sa, vip)
 327         int cmd;
 328         struct sockaddr *sa;
 329         void *vip;
 330 {
 331         struct ip *ip = vip;
 332         struct sctphdr *sh;
 333         uint32_t vrf_id;
 334
 335         /* FIX, for non-bsd is this right? */
 336         vrf_id = SCTP_DEFAULT_VRFID;
 337         if (sa->sa_family != AF_INET ||
 338             ((struct sockaddr_in *)sa)->sin_addr.s_addr == INADDR_ANY) {
 339                 return;
 340         }
 341         if (PRC_IS_REDIRECT(cmd)) {
 342                 ip = 0;
 343         } else if ((unsigned)cmd >= PRC_NCMDS || inetctlerrmap[cmd] == 0) {
 344                 return;
 345         }
 346         if (ip) {
 347                 struct sctp_inpcb *inp = NULL;
 348                 struct sctp_tcb *stcb = NULL;
 349                 struct sctp_nets *net = NULL;
 350                 struct sockaddr_in to, from;
 351
 352                 sh = (struct sctphdr *)((caddr_t)ip + (ip->ip_hl << 2));
 353                 bzero(&to, sizeof(to));
 354                 bzero(&from, sizeof(from));
 355                 from.sin_family = to.sin_family = AF_INET;
 356                 from.sin_len = to.sin_len = sizeof(to);
 357                 from.sin_port = sh->src_port;
 358                 from.sin_addr = ip->ip_src;
 359                 to.sin_port = sh->dest_port;
 360                 to.sin_addr = ip->ip_dst;
 361
 362                 /*
 363                  * 'to' holds the dest of the packet that failed to be sent.
 364                  * 'from' holds our local endpoint address. Thus we reverse
 365                  * the to and the from in the lookup.
 366                  */
 367                 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&from,
 368                     (struct sockaddr *)&to,
 369                     &inp, &net, 1, vrf_id);
 370                 if (stcb != NULL && inp && (inp->sctp_socket != NULL)) {
 371                         if (cmd != PRC_MSGSIZE) {
 372                                 int cm;
 373
 374                                 if (cmd == PRC_HOSTDEAD) {
 375                                         cm = EHOSTUNREACH;
 376                                 } else {
 377                                         cm = inetctlerrmap[cmd];
 378                                 }
 379                                 sctp_notify(inp, cm, sh,
 380                                     (struct sockaddr *)&to, stcb,
 381                                     net);
 382                         } else {
 383                                 /* handle possible ICMP size messages */
 384                                 sctp_notify_mbuf(inp, stcb, net, ip, sh);
 385                         }
 386                 } else {
 387                         if ((stcb == NULL) && (inp != NULL)) {
 388                                 /* reduce ref-count */
 389                                 SCTP_INP_WLOCK(inp);
 390                                 SCTP_INP_DECR_REF(inp);
 391                                 SCTP_INP_WUNLOCK(inp);
 392                         }
 393                 }
 394         }
 395         return;
 396 }
 397
 398 static int
 399 sctp_getcred(SYSCTL_HANDLER_ARGS)
 400 {
 401         struct xucred xuc;
 402         struct sockaddr_in addrs[2];
 403         struct sctp_inpcb *inp;
 404         struct sctp_nets *net;
 405         struct sctp_tcb *stcb;
 406         int error;
 407         uint32_t vrf_id;
 408
 409         /* FIX, for non-bsd is this right? */
 410         vrf_id = SCTP_DEFAULT_VRFID;
 411
 412         error = priv_check(req->td, PRIV_NETINET_GETCRED);
 413
 414         if (error)
 415                 return (error);
 416
 417         error = SYSCTL_IN(req, addrs, sizeof(addrs));
 418         if (error)
 419                 return (error);
 420
 421         stcb = sctp_findassociation_addr_sa(sintosa(&addrs[0]),
 422             sintosa(&addrs[1]),
 423             &inp, &net, 1, vrf_id);
 424         if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) {
 425                 if ((inp != NULL) && (stcb == NULL)) {
 426                         /* reduce ref-count */
 427                         SCTP_INP_WLOCK(inp);
 428                         SCTP_INP_DECR_REF(inp);
 429                         goto cred_can_cont;
 430                 }
 431                 error = ENOENT;
 432                 goto out;
 433         }
 434         SCTP_TCB_UNLOCK(stcb);
 435         /*
 436          * We use the write lock here, only since in the error leg we need
 437          * it. If we used RLOCK, then we would have to
 438          * wlock/decr/unlock/rlock. Which in theory could create a hole.
 439          * Better to use higher wlock.
 440          */
 441         SCTP_INP_WLOCK(inp);
 442 cred_can_cont:
 443         error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket);
 444         if (error) {
 445                 SCTP_INP_WUNLOCK(inp);
 446                 goto out;
 447         }
 448         cru2x(inp->sctp_socket->so_cred, &xuc);
 449         SCTP_INP_WUNLOCK(inp);
 450         error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred));
 451 out:
 452         return (error);
 453 }
 454
 455 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW,
 456     0, 0, sctp_getcred, "S,ucred", "Get the ucred of a SCTP connection");
 457
 458
 459 static void
 460 sctp_abort(struct socket *so)
 461 {
 462         struct sctp_inpcb *inp;
 463         uint32_t flags;
 464
 465         inp = (struct sctp_inpcb *)so->so_pcb;
 466         if (inp == 0)
 467                 return;
 468
 469 sctp_must_try_again:
 470         flags = inp->sctp_flags;
 471 #ifdef SCTP_LOG_CLOSING
 472         sctp_log_closing(inp, NULL, 17);
 473 #endif
 474         if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
 475             (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
 476 #ifdef SCTP_LOG_CLOSING
 477                 sctp_log_closing(inp, NULL, 16);
 478 #endif
 479                 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
 480                     SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
 481                 SOCK_LOCK(so);
 482                 SCTP_SB_CLEAR(so->so_snd);
 483                 /*
 484                  * same for the rcv ones, they are only here for the
 485                  * accounting/select.
 486                  */
 487                 SCTP_SB_CLEAR(so->so_rcv);
 488
 489                 /* Now null out the reference, we are completely detached. */
 490                 so->so_pcb = NULL;
 491                 SOCK_UNLOCK(so);
 492         } else {
 493                 flags = inp->sctp_flags;
 494                 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
 495                         goto sctp_must_try_again;
 496                 }
 497         }
 498         return;
 499 }
 500
 501 static int
 502 sctp_attach(struct socket *so, int proto, struct thread *p)
 503 {
 504         struct sctp_inpcb *inp;
 505         struct inpcb *ip_inp;
 506         int error;
 507         uint32_t vrf_id = SCTP_DEFAULT_VRFID;
 508
 509 #ifdef IPSEC
 510         uint32_t flags;
 511
 512 #endif
 513         inp = (struct sctp_inpcb *)so->so_pcb;
 514         if (inp != 0) {
 515                 return EINVAL;
 516         }
 517         error = SCTP_SORESERVE(so, sctp_sendspace, sctp_recvspace);
 518         if (error) {
 519                 return error;
 520         }
 521         error = sctp_inpcb_alloc(so, vrf_id);
 522         if (error) {
 523                 return error;
 524         }
 525         inp = (struct sctp_inpcb *)so->so_pcb;
 526         SCTP_INP_WLOCK(inp);
 527
 528         inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUND_V6;    /* I'm not v6! */
 529         ip_inp = &inp->ip_inp.inp;
 530         ip_inp->inp_vflag |= INP_IPV4;
 531         ip_inp->inp_ip_ttl = ip_defttl;
 532
 533 #ifdef IPSEC
 534         error = ipsec_init_policy(so, &ip_inp->inp_sp);
 535 #ifdef SCTP_LOG_CLOSING
 536         sctp_log_closing(inp, NULL, 17);
 537 #endif
 538         if (error != 0) {
 539                 flags = inp->sctp_flags;
 540                 if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
 541                     (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
 542 #ifdef SCTP_LOG_CLOSING
 543                         sctp_log_closing(inp, NULL, 15);
 544 #endif
 545                         SCTP_INP_WUNLOCK(inp);
 546                         sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
 547                             SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
 548                 } else {
 549                         SCTP_INP_WUNLOCK(inp);
 550                 }
 551                 return error;
 552         }
 553 #endif                          /* IPSEC */
 554         SCTP_INP_WUNLOCK(inp);
 555         return 0;
 556 }
 557
 558 static int
 559 sctp_bind(struct socket *so, struct sockaddr *addr, struct thread *p)
 560 {
 561         struct sctp_inpcb *inp;
 562         int error;
 563
 564 #ifdef INET6
 565         if (addr && addr->sa_family != AF_INET)
 566                 /* must be a v4 address! */
 567                 return EINVAL;
 568 #endif                          /* INET6 */
 569         if (addr && (addr->sa_len != sizeof(struct sockaddr_in))) {
 570                 return EINVAL;
 571         }
 572         inp = (struct sctp_inpcb *)so->so_pcb;
 573         if (inp == 0)
 574                 return EINVAL;
 575
 576         error = sctp_inpcb_bind(so, addr, p);
 577         return error;
 578 }
 579
 580 static void
 581 sctp_close(struct socket *so)
 582 {
 583         struct sctp_inpcb *inp;
 584         uint32_t flags;
 585
 586         inp = (struct sctp_inpcb *)so->so_pcb;
 587         if (inp == 0)
 588                 return;
 589
 590         /*
 591          * Inform all the lower layer assoc that we are done.
 592          */
 593 sctp_must_try_again:
 594         flags = inp->sctp_flags;
 595 #ifdef SCTP_LOG_CLOSING
 596         sctp_log_closing(inp, NULL, 17);
 597 #endif
 598         if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
 599             (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
 600                 if (((so->so_options & SO_LINGER) && (so->so_linger == 0)) ||
 601                     (so->so_rcv.sb_cc > 0)) {
 602 #ifdef SCTP_LOG_CLOSING
 603                         sctp_log_closing(inp, NULL, 13);
 604 #endif
 605                         sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
 606                             SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
 607                 } else {
 608 #ifdef SCTP_LOG_CLOSING
 609                         sctp_log_closing(inp, NULL, 14);
 610 #endif
 611                         sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
 612                             SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
 613                 }
 614                 /*
 615                  * The socket is now detached, no matter what the state of
 616                  * the SCTP association.
 617                  */
 618                 SOCK_LOCK(so);
 619                 SCTP_SB_CLEAR(so->so_snd);
 620                 /*
 621                  * same for the rcv ones, they are only here for the
 622                  * accounting/select.
 623                  */
 624                 SCTP_SB_CLEAR(so->so_rcv);
 625
 626                 /* Now null out the reference, we are completely detached. */
 627                 so->so_pcb = NULL;
 628                 SOCK_UNLOCK(so);
 629         } else {
 630                 flags = inp->sctp_flags;
 631                 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
 632                         goto sctp_must_try_again;
 633                 }
 634         }
 635         return;
 636 }
 637
 638
 639 int
 640 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
 641     struct mbuf *control, struct thread *p);
 642
 643
 644 int
 645 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
 646     struct mbuf *control, struct thread *p)
 647 {
 648         struct sctp_inpcb *inp;
 649         int error;
 650
 651         inp = (struct sctp_inpcb *)so->so_pcb;
 652         if (inp == 0) {
 653                 if (control) {
 654                         sctp_m_freem(control);
 655                         control = NULL;
 656                 }
 657                 sctp_m_freem(m);
 658                 return EINVAL;
 659         }
 660         /* Got to have an to address if we are NOT a connected socket */
 661         if ((addr == NULL) &&
 662             ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) ||
 663             (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE))
 664             ) {
 665                 goto connected_type;
 666         } else if (addr == NULL) {
 667                 error = EDESTADDRREQ;
 668                 sctp_m_freem(m);
 669                 if (control) {
 670                         sctp_m_freem(control);
 671                         control = NULL;
 672                 }
 673                 return (error);
 674         }
 675 #ifdef INET6
 676         if (addr->sa_family != AF_INET) {
 677                 /* must be a v4 address! */
 678                 sctp_m_freem(m);
 679                 if (control) {
 680                         sctp_m_freem(control);
 681                         control = NULL;
 682                 }
 683                 error = EDESTADDRREQ;
 684                 return EINVAL;
 685         }
 686 #endif                          /* INET6 */
 687 connected_type:
 688         /* now what about control */
 689         if (control) {
 690                 if (inp->control) {
 691                         SCTP_PRINTF("huh? control set?\n");
 692                         sctp_m_freem(inp->control);
 693                         inp->control = NULL;
 694                 }
 695                 inp->control = control;
 696         }
 697         /* Place the data */
 698         if (inp->pkt) {
 699                 SCTP_BUF_NEXT(inp->pkt_last) = m;
 700                 inp->pkt_last = m;
 701         } else {
 702                 inp->pkt_last = inp->pkt = m;
 703         }
 704         if (
 705         /* FreeBSD uses a flag passed */
 706             ((flags & PRUS_MORETOCOME) == 0)
 707             ) {
 708                 /*
 709                  * note with the current version this code will only be used
 710                  * by OpenBSD-- NetBSD, FreeBSD, and MacOS have methods for
 711                  * re-defining sosend to use the sctp_sosend. One can
 712                  * optionally switch back to this code (by changing back the
 713                  * definitions) but this is not advisable. This code is used
 714                  * by FreeBSD when sending a file with sendfile() though.
 715                  */
 716                 int ret;
 717
 718                 ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags);
 719                 inp->pkt = NULL;
 720                 inp->control = NULL;
 721                 return (ret);
 722         } else {
 723                 return (0);
 724         }
 725 }
 726
 727 static int
 728 sctp_disconnect(struct socket *so)
 729 {
 730         struct sctp_inpcb *inp;
 731
 732         inp = (struct sctp_inpcb *)so->so_pcb;
 733         if (inp == NULL) {
 734                 return (ENOTCONN);
 735         }
 736         SCTP_INP_RLOCK(inp);
 737         if (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
 738                 if (SCTP_LIST_EMPTY(&inp->sctp_asoc_list)) {
 739                         /* No connection */
 740                         SCTP_INP_RUNLOCK(inp);
 741                         return (0);
 742                 } else {
 743                         struct sctp_association *asoc;
 744                         struct sctp_tcb *stcb;
 745
 746                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
 747                         if (stcb == NULL) {
 748                                 SCTP_INP_RUNLOCK(inp);
 749                                 return (EINVAL);
 750                         }
 751                         SCTP_TCB_LOCK(stcb);
 752                         asoc = &stcb->asoc;
 753                         if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
 754                                 /* We are about to be freed, out of here */
 755                                 SCTP_TCB_UNLOCK(stcb);
 756                                 SCTP_INP_RUNLOCK(inp);
 757                                 return (0);
 758                         }
 759                         if (((so->so_options & SO_LINGER) &&
 760                             (so->so_linger == 0)) ||
 761                             (so->so_rcv.sb_cc > 0)) {
 762                                 if (SCTP_GET_STATE(asoc) !=
 763                                     SCTP_STATE_COOKIE_WAIT) {
 764                                         /* Left with Data unread */
 765                                         struct mbuf *err;
 766
 767                                         err = sctp_get_mbuf_for_msg(sizeof(struct sctp_paramhdr), 0, M_DONTWAIT, 1, MT_DATA);
 768                                         if (err) {
 769                                                 /*
 770                                                  * Fill in the user
 771                                                  * initiated abort
 772                                                  */
 773                                                 struct sctp_paramhdr *ph;
 774
 775                                                 ph = mtod(err, struct sctp_paramhdr *);
 776                                                 SCTP_BUF_LEN(err) = sizeof(struct sctp_paramhdr);
 777                                                 ph->param_type = htons(SCTP_CAUSE_USER_INITIATED_ABT);
 778                                                 ph->param_length = htons(SCTP_BUF_LEN(err));
 779                                         }
 780                                         sctp_send_abort_tcb(stcb, err);
 781                                         SCTP_STAT_INCR_COUNTER32(sctps_aborted);
 782                                 }
 783                                 SCTP_INP_RUNLOCK(inp);
 784                                 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
 785                                     (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 786                                         SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 787                                 }
 788                                 sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_3);
 789                                 /* No unlock tcb assoc is gone */
 790                                 return (0);
 791                         }
 792                         if (TAILQ_EMPTY(&asoc->send_queue) &&
 793                             TAILQ_EMPTY(&asoc->sent_queue) &&
 794                             (asoc->stream_queue_cnt == 0)) {
 795                                 /* there is nothing queued to send, so done */
 796                                 if (asoc->locked_on_sending) {
 797                                         goto abort_anyway;
 798                                 }
 799                                 if ((SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
 800                                     (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
 801                                         /* only send SHUTDOWN 1st time thru */
 802                                         sctp_stop_timers_for_shutdown(stcb);
 803                                         sctp_send_shutdown(stcb,
 804                                             stcb->asoc.primary_destination);
 805                                         sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3);
 806                                         if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
 807                                             (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 808                                                 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 809                                         }
 810                                         asoc->state = SCTP_STATE_SHUTDOWN_SENT;
 811                                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN,
 812                                             stcb->sctp_ep, stcb,
 813                                             asoc->primary_destination);
 814                                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD,
 815                                             stcb->sctp_ep, stcb,
 816                                             asoc->primary_destination);
 817                                 }
 818                         } else {
 819                                 /*
 820                                  * we still got (or just got) data to send,
 821                                  * so set SHUTDOWN_PENDING
 822                                  */
 823                                 /*
 824                                  * XXX sockets draft says that SCTP_EOF
 825                                  * should be sent with no data. currently,
 826                                  * we will allow user data to be sent first
 827                                  * and move to SHUTDOWN-PENDING
 828                                  */
 829                                 asoc->state |= SCTP_STATE_SHUTDOWN_PENDING;
 830                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb,
 831                                     asoc->primary_destination);
 832                                 if (asoc->locked_on_sending) {
 833                                         /* Locked to send out the data */
 834                                         struct sctp_stream_queue_pending *sp;
 835
 836                                         sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead);
 837                                         if (sp == NULL) {
 838                                                 SCTP_PRINTF("Error, sp is NULL, locked on sending is non-null strm:%d\n",
 839                                                     asoc->locked_on_sending->stream_no);
 840                                         } else {
 841                                                 if ((sp->length == 0) && (sp->msg_is_complete == 0))
 842                                                         asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT;
 843                                         }
 844                                 }
 845                                 if (TAILQ_EMPTY(&asoc->send_queue) &&
 846                                     TAILQ_EMPTY(&asoc->sent_queue) &&
 847                                     (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
 848                                         struct mbuf *op_err;
 849
 850                         abort_anyway:
 851                                         op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
 852                                             0, M_DONTWAIT, 1, MT_DATA);
 853                                         if (op_err) {
 854                                                 /*
 855                                                  * Fill in the user
 856                                                  * initiated abort
 857                                                  */
 858                                                 struct sctp_paramhdr *ph;
 859                                                 uint32_t *ippp;
 860
 861                                                 SCTP_BUF_LEN(op_err) =
 862                                                     (sizeof(struct sctp_paramhdr) + sizeof(uint32_t));
 863                                                 ph = mtod(op_err,
 864                                                     struct sctp_paramhdr *);
 865                                                 ph->param_type = htons(
 866                                                     SCTP_CAUSE_USER_INITIATED_ABT);
 867                                                 ph->param_length = htons(SCTP_BUF_LEN(op_err));
 868                                                 ippp = (uint32_t *) (ph + 1);
 869                                                 *ippp = htonl(SCTP_FROM_SCTP_USRREQ + SCTP_LOC_4);
 870                                         }
 871                                         stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_USRREQ + SCTP_LOC_4;
 872                                         sctp_send_abort_tcb(stcb, op_err);
 873                                         SCTP_STAT_INCR_COUNTER32(sctps_aborted);
 874                                         if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
 875                                             (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 876                                                 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 877                                         }
 878                                         SCTP_INP_RUNLOCK(inp);
 879                                         sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_5);
 880                                         return (0);
 881                                 }
 882                         }
 883                         SCTP_TCB_UNLOCK(stcb);
 884                         SCTP_INP_RUNLOCK(inp);
 885                         return (0);
 886                 }
 887                 /* not reached */
 888         } else {
 889                 /* UDP model does not support this */
 890                 SCTP_INP_RUNLOCK(inp);
 891                 return EOPNOTSUPP;
 892         }
 893 }
 894
 895 int
 896 sctp_shutdown(struct socket *so)
 897 {
 898         struct sctp_inpcb *inp;
 899
 900         inp = (struct sctp_inpcb *)so->so_pcb;
 901         if (inp == 0) {
 902                 return EINVAL;
 903         }
 904         SCTP_INP_RLOCK(inp);
 905         /* For UDP model this is a invalid call */
 906         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
 907                 /* Restore the flags that the soshutdown took away. */
 908                 so->so_rcv.sb_state &= ~SBS_CANTRCVMORE;
 909                 /* This proc will wakeup for read and do nothing (I hope) */
 910                 SCTP_INP_RUNLOCK(inp);
 911                 return (EOPNOTSUPP);
 912         }
 913         /*
 914          * Ok if we reach here its the TCP model and it is either a SHUT_WR
 915          * or SHUT_RDWR. This means we put the shutdown flag against it.
 916          */
 917         {
 918                 struct sctp_tcb *stcb;
 919                 struct sctp_association *asoc;
 920
 921                 socantsendmore(so);
 922
 923                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
 924                 if (stcb == NULL) {
 925                         /*
 926                          * Ok we hit the case that the shutdown call was
 927                          * made after an abort or something. Nothing to do
 928                          * now.
 929                          */
 930                         SCTP_INP_RUNLOCK(inp);
 931                         return (0);
 932                 }
 933                 SCTP_TCB_LOCK(stcb);
 934                 asoc = &stcb->asoc;
 935                 if (TAILQ_EMPTY(&asoc->send_queue) &&
 936                     TAILQ_EMPTY(&asoc->sent_queue) &&
 937                     (asoc->stream_queue_cnt == 0)) {
 938                         if (asoc->locked_on_sending) {
 939                                 goto abort_anyway;
 940                         }
 941                         /* there is nothing queued to send, so I'm done... */
 942                         if (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) {
 943                                 /* only send SHUTDOWN the first time through */
 944                                 sctp_stop_timers_for_shutdown(stcb);
 945                                 sctp_send_shutdown(stcb,
 946                                     stcb->asoc.primary_destination);
 947                                 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3);
 948                                 if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
 949                                     (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 950                                         SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 951                                 }
 952                                 asoc->state = SCTP_STATE_SHUTDOWN_SENT;
 953                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN,
 954                                     stcb->sctp_ep, stcb,
 955                                     asoc->primary_destination);
 956                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD,
 957                                     stcb->sctp_ep, stcb,
 958                                     asoc->primary_destination);
 959                         }
 960                 } else {
 961                         /*
 962                          * we still got (or just got) data to send, so set
 963                          * SHUTDOWN_PENDING
 964                          */
 965                         asoc->state |= SCTP_STATE_SHUTDOWN_PENDING;
 966                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb,
 967                             asoc->primary_destination);
 968
 969                         if (asoc->locked_on_sending) {
 970                                 /* Locked to send out the data */
 971                                 struct sctp_stream_queue_pending *sp;
 972
 973                                 sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead);
 974                                 if (sp == NULL) {
 975                                         SCTP_PRINTF("Error, sp is NULL, locked on sending is non-null strm:%d\n",
 976                                             asoc->locked_on_sending->stream_no);
 977                                 } else {
 978                                         if ((sp->length == 0) && (sp->msg_is_complete == 0)) {
 979                                                 asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT;
 980                                         }
 981                                 }
 982                         }
 983                         if (TAILQ_EMPTY(&asoc->send_queue) &&
 984                             TAILQ_EMPTY(&asoc->sent_queue) &&
 985                             (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
 986                                 struct mbuf *op_err;
 987
 988                 abort_anyway:
 989                                 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
 990                                     0, M_DONTWAIT, 1, MT_DATA);
 991                                 if (op_err) {
 992                                         /* Fill in the user initiated abort */
 993                                         struct sctp_paramhdr *ph;
 994                                         uint32_t *ippp;
 995
 996                                         SCTP_BUF_LEN(op_err) =
 997                                             sizeof(struct sctp_paramhdr) + sizeof(uint32_t);
 998                                         ph = mtod(op_err,
 999                                             struct sctp_paramhdr *);
1000                                         ph->param_type = htons(
1001                                             SCTP_CAUSE_USER_INITIATED_ABT);
1002                                         ph->param_length = htons(SCTP_BUF_LEN(op_err));
1003                                         ippp = (uint32_t *) (ph + 1);
1004                                         *ippp = htonl(SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6);
1005                                 }
1006                                 stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6;
1007                                 sctp_abort_an_association(stcb->sctp_ep, stcb,
1008                                     SCTP_RESPONSE_TO_USER_REQ,
1009                                     op_err);
1010                                 goto skip_unlock;
1011                         }
1012                 }
1013                 SCTP_TCB_UNLOCK(stcb);
1014         }
1015 skip_unlock:
1016         SCTP_INP_RUNLOCK(inp);
1017         return 0;
1018 }
1019
1020 /*
1021  * copies a "user" presentable address and removes embedded scope, etc.
1022  * returns 0 on success, 1 on error
1023  */
1024 static uint32_t
1025 sctp_fill_user_address(struct sockaddr_storage *ss, struct sockaddr *sa)
1026 {
1027         struct sockaddr_in6 lsa6;
1028
1029         sa = (struct sockaddr *)sctp_recover_scope((struct sockaddr_in6 *)sa,
1030             &lsa6);
1031         memcpy(ss, sa, sa->sa_len);
1032         return (0);
1033 }
1034
1035
1036
1037 static size_t
1038 sctp_fill_up_addresses_vrf(struct sctp_inpcb *inp,
1039     struct sctp_tcb *stcb,
1040     size_t limit,
1041     struct sockaddr_storage *sas,
1042     uint32_t vrf_id)
1043 {
1044         struct sctp_ifn *sctp_ifn;
1045         struct sctp_ifa *sctp_ifa;
1046         int loopback_scope, ipv4_local_scope, local_scope, site_scope;
1047         size_t actual;
1048         int ipv4_addr_legal, ipv6_addr_legal;
1049         struct sctp_vrf *vrf;
1050
1051         actual = 0;
1052         if (limit <= 0)
1053                 return (actual);
1054
1055         if (stcb) {
1056                 /* Turn on all the appropriate scope */
1057                 loopback_scope = stcb->asoc.loopback_scope;
1058                 ipv4_local_scope = stcb->asoc.ipv4_local_scope;
1059                 local_scope = stcb->asoc.local_scope;
1060                 site_scope = stcb->asoc.site_scope;
1061         } else {
1062                 /* Turn on ALL scope, since we look at the EP */
1063                 loopback_scope = ipv4_local_scope = local_scope =
1064                     site_scope = 1;
1065         }
1066         ipv4_addr_legal = ipv6_addr_legal = 0;
1067         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1068                 ipv6_addr_legal = 1;
1069                 if (SCTP_IPV6_V6ONLY(inp) == 0) {
1070                         ipv4_addr_legal = 1;
1071                 }
1072         } else {
1073                 ipv4_addr_legal = 1;
1074         }
1075         vrf = sctp_find_vrf(vrf_id);
1076         if (vrf == NULL) {
1077                 return (0);
1078         }
1079         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1080                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
1081                         if ((loopback_scope == 0) &&
1082                             SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
1083                                 /* Skip loopback if loopback_scope not set */
1084                                 continue;
1085                         }
1086                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
1087                                 if (stcb) {
1088                                         /*
1089                                          * For the BOUND-ALL case, the list
1090                                          * associated with a TCB is Always
1091                                          * considered a reverse list.. i.e.
1092                                          * it lists addresses that are NOT
1093                                          * part of the association. If this
1094                                          * is one of those we must skip it.
1095                                          */
1096                                         if (sctp_is_addr_restricted(stcb,
1097                                             sctp_ifa)) {
1098                                                 continue;
1099                                         }
1100                                 }
1101                                 if ((sctp_ifa->address.sa.sa_family == AF_INET) &&
1102                                     (ipv4_addr_legal)) {
1103                                         struct sockaddr_in *sin;
1104
1105                                         sin = (struct sockaddr_in *)&sctp_ifa->address.sa;
1106                                         if (sin->sin_addr.s_addr == 0) {
1107                                                 /*
1108                                                  * we skip unspecifed
1109                                                  * addresses
1110                                                  */
1111                                                 continue;
1112                                         }
1113                                         if ((ipv4_local_scope == 0) &&
1114                                             (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
1115                                                 continue;
1116                                         }
1117                                         if (inp->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) {
1118                                                 in6_sin_2_v4mapsin6(sin, (struct sockaddr_in6 *)sas);
1119                                                 ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
1120                                                 sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(struct sockaddr_in6));
1121                                                 actual += sizeof(sizeof(struct sockaddr_in6));
1122                                         } else {
1123                                                 memcpy(sas, sin, sizeof(*sin));
1124                                                 ((struct sockaddr_in *)sas)->sin_port = inp->sctp_lport;
1125                                                 sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(*sin));
1126                                                 actual += sizeof(*sin);
1127                                         }
1128                                         if (actual >= limit) {
1129                                                 return (actual);
1130                                         }
1131                                 } else if ((sctp_ifa->address.sa.sa_family == AF_INET6) &&
1132                                     (ipv6_addr_legal)) {
1133                                         struct sockaddr_in6 *sin6;
1134
1135                                         sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa;
1136                                         if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1137                                                 /*
1138                                                  * we skip unspecifed
1139                                                  * addresses
1140                                                  */
1141                                                 continue;
1142                                         }
1143                                         if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
1144                                                 if (local_scope == 0)
1145                                                         continue;
1146                                                 if (sin6->sin6_scope_id == 0) {
1147                                                         if (sa6_recoverscope(sin6) != 0)
1148                                                                 /*
1149                                                                  * bad link
1150                                                                  * local
1151                                                                  * address
1152                                                                  */
1153                                                                 continue;
1154                                                 }
1155                                         }
1156                                         if ((site_scope == 0) &&
1157                                             (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
1158                                                 continue;
1159                                         }
1160                                         memcpy(sas, sin6, sizeof(*sin6));
1161                                         ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
1162                                         sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(*sin6));
1163                                         actual += sizeof(*sin6);
1164                                         if (actual >= limit) {
1165                                                 return (actual);
1166                                         }
1167                                 }
1168                         }
1169                 }
1170         } else {
1171                 struct sctp_laddr *laddr;
1172
1173                 /* The list is a NEGATIVE list */
1174                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1175                         if (stcb) {
1176                                 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
1177                                         continue;
1178                                 }
1179                         }
1180                         if (sctp_fill_user_address(sas, &laddr->ifa->address.sa))
1181                                 continue;
1182
1183                         ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
1184                         sas = (struct sockaddr_storage *)((caddr_t)sas +
1185                             laddr->ifa->address.sa.sa_len);
1186                         actual += laddr->ifa->address.sa.sa_len;
1187                         if (actual >= limit) {
1188                                 return (actual);
1189                         }
1190                 }
1191         }
1192         return (actual);
1193 }
1194
1195 static size_t
1196 sctp_fill_up_addresses(struct sctp_inpcb *inp,
1197     struct sctp_tcb *stcb,
1198     size_t limit,
1199     struct sockaddr_storage *sas)
1200 {
1201         size_t size = 0;
1202
1203         /* fill up addresses for the endpoint's default vrf */
1204         size = sctp_fill_up_addresses_vrf(inp, stcb, limit, sas,
1205             inp->def_vrf_id);
1206         return (size);
1207 }
1208
1209 static int
1210 sctp_count_max_addresses_vrf(struct sctp_inpcb *inp, uint32_t vrf_id)
1211 {
1212         int cnt = 0;
1213         struct sctp_vrf *vrf = NULL;
1214
1215         /*
1216          * In both sub-set bound an bound_all cases we return the MAXIMUM
1217          * number of addresses that you COULD get. In reality the sub-set
1218          * bound may have an exclusion list for a given TCB OR in the
1219          * bound-all case a TCB may NOT include the loopback or other
1220          * addresses as well.
1221          */
1222         vrf = sctp_find_vrf(vrf_id);
1223         if (vrf == NULL) {
1224                 return (0);
1225         }
1226         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1227                 struct sctp_ifn *sctp_ifn;
1228                 struct sctp_ifa *sctp_ifa;
1229
1230                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
1231                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
1232                                 /* Count them if they are the right type */
1233                                 if (sctp_ifa->address.sa.sa_family == AF_INET) {
1234                                         if (inp->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)
1235                                                 cnt += sizeof(struct sockaddr_in6);
1236                                         else
1237                                                 cnt += sizeof(struct sockaddr_in);
1238
1239                                 } else if (sctp_ifa->address.sa.sa_family == AF_INET6)
1240                                         cnt += sizeof(struct sockaddr_in6);
1241                         }
1242                 }
1243         } else {
1244                 struct sctp_laddr *laddr;
1245
1246                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1247                         if (laddr->ifa->address.sa.sa_family == AF_INET) {
1248                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)
1249                                         cnt += sizeof(struct sockaddr_in6);
1250                                 else
1251                                         cnt += sizeof(struct sockaddr_in);
1252
1253                         } else if (laddr->ifa->address.sa.sa_family == AF_INET6)
1254                                 cnt += sizeof(struct sockaddr_in6);
1255                 }
1256         }
1257         return (cnt);
1258 }
1259
1260 static int
1261 sctp_count_max_addresses(struct sctp_inpcb *inp)
1262 {
1263         int cnt = 0;
1264
1265         /* count addresses for the endpoint's default VRF */
1266         cnt = sctp_count_max_addresses_vrf(inp, inp->def_vrf_id);
1267         return (cnt);
1268 }
1269
1270 static int
1271 sctp_do_connect_x(struct socket *so, struct sctp_inpcb *inp, void *optval,
1272     size_t optsize, void *p, int delay)
1273 {
1274         int error = 0;
1275         int creat_lock_on = 0;
1276         struct sctp_tcb *stcb = NULL;
1277         struct sockaddr *sa;
1278         int num_v6 = 0, num_v4 = 0, *totaddrp, totaddr;
1279         int added = 0;
1280         uint32_t vrf_id;
1281         int bad_addresses = 0;
1282         sctp_assoc_t *a_id;
1283
1284         SCTPDBG(SCTP_DEBUG_PCB1, "Connectx called\n");
1285
1286         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
1287             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
1288                 /* We are already connected AND the TCP model */
1289                 return (EADDRINUSE);
1290         }
1291         if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
1292                 return (EINVAL);
1293         }
1294         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
1295                 SCTP_INP_RLOCK(inp);
1296                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1297                 SCTP_INP_RUNLOCK(inp);
1298         }
1299         if (stcb) {
1300                 return (EALREADY);
1301         }
1302         SCTP_INP_INCR_REF(inp);
1303         SCTP_ASOC_CREATE_LOCK(inp);
1304         creat_lock_on = 1;
1305         if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
1306             (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
1307                 error = EFAULT;
1308                 goto out_now;
1309         }
1310         totaddrp = (int *)optval;
1311         totaddr = *totaddrp;
1312         sa = (struct sockaddr *)(totaddrp + 1);
1313         stcb = sctp_connectx_helper_find(inp, sa, &totaddr, &num_v4, &num_v6, &error, (optsize - sizeof(int)), &bad_addresses);
1314         if ((stcb != NULL) || bad_addresses) {
1315                 /* Already have or am bring up an association */
1316                 SCTP_ASOC_CREATE_UNLOCK(inp);
1317                 creat_lock_on = 0;
1318                 if (stcb)
1319                         SCTP_TCB_UNLOCK(stcb);
1320                 if (bad_addresses == 0)
1321                         error = EALREADY;
1322                 goto out_now;
1323         }
1324 #ifdef INET6
1325         if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) &&
1326             (num_v6 > 0)) {
1327                 error = EINVAL;
1328                 goto out_now;
1329         }
1330         if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1331             (num_v4 > 0)) {
1332                 struct in6pcb *inp6;
1333
1334                 inp6 = (struct in6pcb *)inp;
1335                 if (SCTP_IPV6_V6ONLY(inp6)) {
1336                         /*
1337                          * if IPV6_V6ONLY flag, ignore connections destined
1338                          * to a v4 addr or v4-mapped addr
1339                          */
1340                         error = EINVAL;
1341                         goto out_now;
1342                 }
1343         }
1344 #endif                          /* INET6 */
1345         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
1346             SCTP_PCB_FLAGS_UNBOUND) {
1347                 /* Bind a ephemeral port */
1348                 error = sctp_inpcb_bind(so, NULL, p);
1349                 if (error) {
1350                         goto out_now;
1351                 }
1352         }
1353         /* FIX ME: do we want to pass in a vrf on the connect call? */
1354         vrf_id = inp->def_vrf_id;
1355
1356         /* We are GOOD to go */
1357         stcb = sctp_aloc_assoc(inp, sa, 1, &error, 0, vrf_id);
1358         if (stcb == NULL) {
1359                 /* Gak! no memory */
1360                 goto out_now;
1361         }
1362         stcb->asoc.state = SCTP_STATE_COOKIE_WAIT;
1363         /* move to second address */
1364         if (sa->sa_family == AF_INET)
1365                 sa = (struct sockaddr *)((caddr_t)sa + sizeof(struct sockaddr_in));
1366         else
1367                 sa = (struct sockaddr *)((caddr_t)sa + sizeof(struct sockaddr_in6));
1368
1369         error = 0;
1370         added = sctp_connectx_helper_add(stcb, sa, (totaddr - 1), &error);
1371         /* Fill in the return id */
1372         if (error) {
1373                 sctp_free_assoc(inp, stcb, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_12);
1374                 goto out_now;
1375         }
1376         a_id = (sctp_assoc_t *) optval;
1377         *a_id = sctp_get_associd(stcb);
1378
1379         /* initialize authentication parameters for the assoc */
1380         sctp_initialize_auth_params(inp, stcb);
1381
1382         if (delay) {
1383                 /* doing delayed connection */
1384                 stcb->asoc.delayed_connection = 1;
1385                 sctp_timer_start(SCTP_TIMER_TYPE_INIT, inp, stcb, stcb->asoc.primary_destination);
1386         } else {
1387                 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
1388                 sctp_send_initiate(inp, stcb);
1389         }
1390         SCTP_TCB_UNLOCK(stcb);
1391         if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
1392                 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
1393                 /* Set the connected flag so we can queue data */
1394                 soisconnecting(so);
1395         }
1396 out_now:
1397         if (creat_lock_on) {
1398                 SCTP_ASOC_CREATE_UNLOCK(inp);
1399         }
1400         SCTP_INP_DECR_REF(inp);
1401         return error;
1402 }
1403
1404 #define SCTP_FIND_STCB(inp, stcb, assoc_id) { \
1405         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||\
1406             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { \
1407                 SCTP_INP_RLOCK(inp); \
1408                 stcb = LIST_FIRST(&inp->sctp_asoc_list); \
1409                 if (stcb) { \
1410                         SCTP_TCB_LOCK(stcb); \
1411                 } \
1412                 SCTP_INP_RUNLOCK(inp); \
1413         } else if (assoc_id != 0) { \
1414                 stcb = sctp_findassociation_ep_asocid(inp, assoc_id, 1); \
1415                 if (stcb == NULL) { \
1416                         error = ENOENT; \
1417                         break; \
1418                 } \
1419         } else { \
1420                 stcb = NULL; \
1421         } \
1422   }
1423
1424
1425 #define SCTP_CHECK_AND_CAST(destp, srcp, type, size)  {\
1426         if (size < sizeof(type)) { \
1427                 error = EINVAL; \
1428                 break; \
1429         } else { \
1430                 destp = (type *)srcp; \
1431         } \
1432       }
1433
1434 static int
1435 sctp_getopt(struct socket *so, int optname, void *optval, size_t *optsize,
1436     void *p)
1437 {
1438         struct sctp_inpcb *inp;
1439         int error, val = 0;
1440         struct sctp_tcb *stcb = NULL;
1441
1442         if (optval == NULL) {
1443                 return (EINVAL);
1444         }
1445         inp = (struct sctp_inpcb *)so->so_pcb;
1446         if (inp == 0)
1447                 return EINVAL;
1448         error = 0;
1449
1450         switch (optname) {
1451         case SCTP_NODELAY:
1452         case SCTP_AUTOCLOSE:
1453         case SCTP_EXPLICIT_EOR:
1454         case SCTP_AUTO_ASCONF:
1455         case SCTP_DISABLE_FRAGMENTS:
1456         case SCTP_I_WANT_MAPPED_V4_ADDR:
1457         case SCTP_USE_EXT_RCVINFO:
1458                 SCTP_INP_RLOCK(inp);
1459                 switch (optname) {
1460                 case SCTP_DISABLE_FRAGMENTS:
1461                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NO_FRAGMENT);
1462                         break;
1463                 case SCTP_I_WANT_MAPPED_V4_ADDR:
1464                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4);
1465                         break;
1466                 case SCTP_AUTO_ASCONF:
1467                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
1468                         break;
1469                 case SCTP_EXPLICIT_EOR:
1470                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
1471                         break;
1472                 case SCTP_NODELAY:
1473                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NODELAY);
1474                         break;
1475                 case SCTP_USE_EXT_RCVINFO:
1476                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO);
1477                         break;
1478                 case SCTP_AUTOCLOSE:
1479                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTOCLOSE))
1480                                 val = TICKS_TO_SEC(inp->sctp_ep.auto_close_time);
1481                         else
1482                                 val = 0;
1483                         break;
1484
1485                 default:
1486                         error = ENOPROTOOPT;
1487                 }               /* end switch (sopt->sopt_name) */
1488                 if (optname != SCTP_AUTOCLOSE) {
1489                         /* make it an "on/off" value */
1490                         val = (val != 0);
1491                 }
1492                 if (*optsize < sizeof(val)) {
1493                         error = EINVAL;
1494                 }
1495                 SCTP_INP_RUNLOCK(inp);
1496                 if (error == 0) {
1497                         /* return the option value */
1498                         *(int *)optval = val;
1499                         *optsize = sizeof(val);
1500                 }
1501                 break;
1502         case SCTP_GET_PACKET_LOG:
1503                 {
1504 #ifdef  SCTP_PACKET_LOGGING
1505                         uint8_t *target;
1506                         int ret;
1507
1508                         SCTP_CHECK_AND_CAST(target, optval, uint8_t, *optsize);
1509                         ret = sctp_copy_out_packet_log(target, (int)*optsize);
1510                         *optsize = ret;
1511 #else
1512                         error = EOPNOTSUPP;
1513 #endif
1514                         break;
1515                 }
1516         case SCTP_PARTIAL_DELIVERY_POINT:
1517                 {
1518                         uint32_t *value;
1519
1520                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1521                         *value = inp->partial_delivery_point;
1522                         *optsize = sizeof(uint32_t);
1523                 }
1524                 break;
1525         case SCTP_FRAGMENT_INTERLEAVE:
1526                 {
1527                         uint32_t *value;
1528
1529                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1530                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) {
1531                                 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) {
1532                                         *value = SCTP_FRAG_LEVEL_2;
1533                                 } else {
1534                                         *value = SCTP_FRAG_LEVEL_1;
1535                                 }
1536                         } else {
1537                                 *value = SCTP_FRAG_LEVEL_0;
1538                         }
1539                         *optsize = sizeof(uint32_t);
1540                 }
1541                 break;
1542         case SCTP_CMT_ON_OFF:
1543                 {
1544                         struct sctp_assoc_value *av;
1545
1546                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1547                         if (sctp_cmt_on_off) {
1548                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1549                                 if (stcb) {
1550                                         av->assoc_value = stcb->asoc.sctp_cmt_on_off;
1551                                         SCTP_TCB_UNLOCK(stcb);
1552
1553                                 } else {
1554                                         error = ENOTCONN;
1555                                 }
1556                         } else {
1557                                 error = ENOPROTOOPT;
1558                         }
1559                         *optsize = sizeof(*av);
1560                 }
1561                 break;
1562                 /* JRS - Get socket option for pluggable congestion control */
1563         case SCTP_PLUGGABLE_CC:
1564                 {
1565                         struct sctp_assoc_value *av;
1566
1567                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1568                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1569                         if (stcb) {
1570                                 av->assoc_value = stcb->asoc.congestion_control_module;
1571                                 SCTP_TCB_UNLOCK(stcb);
1572                         } else {
1573                                 av->assoc_value = inp->sctp_ep.sctp_default_cc_module;
1574                         }
1575                         *optsize = sizeof(*av);
1576                 }
1577                 break;
1578         case SCTP_GET_ADDR_LEN:
1579                 {
1580                         struct sctp_assoc_value *av;
1581
1582                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1583                         error = EINVAL;
1584 #ifdef INET
1585                         if (av->assoc_value == AF_INET) {
1586                                 av->assoc_value = sizeof(struct sockaddr_in);
1587                                 error = 0;
1588                         }
1589 #endif
1590 #ifdef INET6
1591                         if (av->assoc_value == AF_INET6) {
1592                                 av->assoc_value = sizeof(struct sockaddr_in6);
1593                                 error = 0;
1594                         }
1595 #endif
1596                         *optsize = sizeof(*av);
1597                 }
1598                 break;
1599         case SCTP_GET_ASSOC_NUMBER:
1600                 {
1601                         uint32_t *value, cnt;
1602
1603                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1604                         cnt = 0;
1605                         SCTP_INP_RLOCK(inp);
1606                         LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
1607                                 cnt++;
1608                         }
1609                         SCTP_INP_RUNLOCK(inp);
1610                         *value = cnt;
1611                         *optsize = sizeof(uint32_t);
1612                 }
1613                 break;
1614
1615         case SCTP_GET_ASSOC_ID_LIST:
1616                 {
1617                         struct sctp_assoc_ids *ids;
1618                         unsigned int at, limit;
1619
1620                         SCTP_CHECK_AND_CAST(ids, optval, struct sctp_assoc_ids, *optsize);
1621                         at = 0;
1622                         limit = *optsize / sizeof(sctp_assoc_t);
1623                         SCTP_INP_RLOCK(inp);
1624                         LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
1625                                 if (at < limit) {
1626                                         ids->gaids_assoc_id[at++] = sctp_get_associd(stcb);
1627                                 } else {
1628                                         error = EINVAL;
1629                                         break;
1630                                 }
1631                         }
1632                         SCTP_INP_RUNLOCK(inp);
1633                         *optsize = at * sizeof(sctp_assoc_t);
1634                 }
1635                 break;
1636         case SCTP_CONTEXT:
1637                 {
1638                         struct sctp_assoc_value *av;
1639
1640                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1641                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1642
1643                         if (stcb) {
1644                                 av->assoc_value = stcb->asoc.context;
1645                                 SCTP_TCB_UNLOCK(stcb);
1646                         } else {
1647                                 SCTP_INP_RLOCK(inp);
1648                                 av->assoc_value = inp->sctp_context;
1649                                 SCTP_INP_RUNLOCK(inp);
1650                         }
1651                         *optsize = sizeof(*av);
1652                 }
1653                 break;
1654         case SCTP_VRF_ID:
1655                 {
1656                         uint32_t *default_vrfid;
1657
1658                         SCTP_CHECK_AND_CAST(default_vrfid, optval, uint32_t, *optsize);
1659                         *default_vrfid = inp->def_vrf_id;
1660                         break;
1661                 }
1662         case SCTP_GET_ASOC_VRF:
1663                 {
1664                         struct sctp_assoc_value *id;
1665
1666                         SCTP_CHECK_AND_CAST(id, optval, struct sctp_assoc_value, *optsize);
1667                         SCTP_FIND_STCB(inp, stcb, id->assoc_id);
1668                         if (stcb == NULL) {
1669                                 error = EINVAL;
1670                                 break;
1671                         }
1672                         id->assoc_value = stcb->asoc.vrf_id;
1673                         break;
1674                 }
1675         case SCTP_GET_VRF_IDS:
1676                 {
1677                         error = EOPNOTSUPP;
1678                         break;
1679                 }
1680         case SCTP_GET_NONCE_VALUES:
1681                 {
1682                         struct sctp_get_nonce_values *gnv;
1683
1684                         SCTP_CHECK_AND_CAST(gnv, optval, struct sctp_get_nonce_values, *optsize);
1685                         SCTP_FIND_STCB(inp, stcb, gnv->gn_assoc_id);
1686
1687                         if (stcb) {
1688                                 gnv->gn_peers_tag = stcb->asoc.peer_vtag;
1689                                 gnv->gn_local_tag = stcb->asoc.my_vtag;
1690                                 SCTP_TCB_UNLOCK(stcb);
1691                         } else {
1692                                 error = ENOTCONN;
1693                         }
1694                         *optsize = sizeof(*gnv);
1695                 }
1696                 break;
1697         case SCTP_DELAYED_SACK:
1698                 {
1699                         struct sctp_sack_info *sack;
1700
1701                         SCTP_CHECK_AND_CAST(sack, optval, struct sctp_sack_info, *optsize);
1702                         SCTP_FIND_STCB(inp, stcb, sack->sack_assoc_id);
1703                         if (stcb) {
1704                                 sack->sack_delay = stcb->asoc.delayed_ack;
1705                                 sack->sack_freq = stcb->asoc.sack_freq;
1706                                 SCTP_TCB_UNLOCK(stcb);
1707                         } else {
1708                                 SCTP_INP_RLOCK(inp);
1709                                 sack->sack_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
1710                                 sack->sack_freq = inp->sctp_ep.sctp_sack_freq;
1711                                 SCTP_INP_RUNLOCK(inp);
1712                         }
1713                         *optsize = sizeof(*sack);
1714                 }
1715                 break;
1716
1717         case SCTP_GET_SNDBUF_USE:
1718                 {
1719                         struct sctp_sockstat *ss;
1720
1721                         SCTP_CHECK_AND_CAST(ss, optval, struct sctp_sockstat, *optsize);
1722                         SCTP_FIND_STCB(inp, stcb, ss->ss_assoc_id);
1723
1724                         if (stcb) {
1725                                 ss->ss_total_sndbuf = stcb->asoc.total_output_queue_size;
1726                                 ss->ss_total_recv_buf = (stcb->asoc.size_on_reasm_queue +
1727                                     stcb->asoc.size_on_all_streams);
1728                                 SCTP_TCB_UNLOCK(stcb);
1729                         } else {
1730                                 error = ENOTCONN;
1731                         }
1732                         *optsize = sizeof(struct sctp_sockstat);
1733                 }
1734                 break;
1735         case SCTP_MAX_BURST:
1736                 {
1737                         uint8_t *value;
1738
1739                         SCTP_CHECK_AND_CAST(value, optval, uint8_t, *optsize);
1740
1741                         SCTP_INP_RLOCK(inp);
1742                         *value = inp->sctp_ep.max_burst;
1743                         SCTP_INP_RUNLOCK(inp);
1744                         *optsize = sizeof(uint8_t);
1745                 }
1746                 break;
1747         case SCTP_MAXSEG:
1748                 {
1749                         struct sctp_assoc_value *av;
1750                         int ovh;
1751
1752                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1753                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1754
1755                         if (stcb) {
1756                                 av->assoc_value = sctp_get_frag_point(stcb, &stcb->asoc);
1757                                 SCTP_TCB_UNLOCK(stcb);
1758                         } else {
1759                                 SCTP_INP_RLOCK(inp);
1760                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1761                                         ovh = SCTP_MED_OVERHEAD;
1762                                 } else {
1763                                         ovh = SCTP_MED_V4_OVERHEAD;
1764                                 }
1765                                 if (inp->sctp_frag_point >= SCTP_DEFAULT_MAXSEGMENT)
1766                                         av->assoc_value = 0;
1767                                 else
1768                                         av->assoc_value = inp->sctp_frag_point - ovh;
1769                                 SCTP_INP_RUNLOCK(inp);
1770                         }
1771                         *optsize = sizeof(struct sctp_assoc_value);
1772                 }
1773                 break;
1774         case SCTP_GET_STAT_LOG:
1775                 error = sctp_fill_stat_log(optval, optsize);
1776                 break;
1777         case SCTP_EVENTS:
1778                 {
1779                         struct sctp_event_subscribe *events;
1780
1781                         SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, *optsize);
1782                         memset(events, 0, sizeof(*events));
1783                         SCTP_INP_RLOCK(inp);
1784                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT))
1785                                 events->sctp_data_io_event = 1;
1786
1787                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT))
1788                                 events->sctp_association_event = 1;
1789
1790                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT))
1791                                 events->sctp_address_event = 1;
1792
1793                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT))
1794                                 events->sctp_send_failure_event = 1;
1795
1796                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR))
1797                                 events->sctp_peer_error_event = 1;
1798
1799                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT))
1800                                 events->sctp_shutdown_event = 1;
1801
1802                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT))
1803                                 events->sctp_partial_delivery_event = 1;
1804
1805                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT))
1806                                 events->sctp_adaptation_layer_event = 1;
1807
1808                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT))
1809                                 events->sctp_authentication_event = 1;
1810
1811                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT))
1812                                 events->sctp_stream_reset_events = 1;
1813                         SCTP_INP_RUNLOCK(inp);
1814                         *optsize = sizeof(struct sctp_event_subscribe);
1815                 }
1816                 break;
1817
1818         case SCTP_ADAPTATION_LAYER:
1819                 {
1820                         uint32_t *value;
1821
1822                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1823
1824                         SCTP_INP_RLOCK(inp);
1825                         *value = inp->sctp_ep.adaptation_layer_indicator;
1826                         SCTP_INP_RUNLOCK(inp);
1827                         *optsize = sizeof(uint32_t);
1828                 }
1829                 break;
1830         case SCTP_SET_INITIAL_DBG_SEQ:
1831                 {
1832                         uint32_t *value;
1833
1834                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1835                         SCTP_INP_RLOCK(inp);
1836                         *value = inp->sctp_ep.initial_sequence_debug;
1837                         SCTP_INP_RUNLOCK(inp);
1838                         *optsize = sizeof(uint32_t);
1839                 }
1840                 break;
1841         case SCTP_GET_LOCAL_ADDR_SIZE:
1842                 {
1843                         uint32_t *value;
1844
1845                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1846                         SCTP_INP_RLOCK(inp);
1847                         *value = sctp_count_max_addresses(inp);
1848                         SCTP_INP_RUNLOCK(inp);
1849                         *optsize = sizeof(uint32_t);
1850                 }
1851                 break;
1852         case SCTP_GET_REMOTE_ADDR_SIZE:
1853                 {
1854                         uint32_t *value;
1855                         size_t size;
1856                         struct sctp_nets *net;
1857
1858                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1859                         /* FIXME MT: change to sctp_assoc_value? */
1860                         SCTP_FIND_STCB(inp, stcb, (sctp_assoc_t) * value);
1861
1862                         if (stcb) {
1863                                 size = 0;
1864                                 /* Count the sizes */
1865                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1866                                         if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) ||
1867                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) {
1868                                                 size += sizeof(struct sockaddr_in6);
1869                                         } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) {
1870                                                 size += sizeof(struct sockaddr_in);
1871                                         } else {
1872                                                 /* huh */
1873                                                 break;
1874                                         }
1875                                 }
1876                                 SCTP_TCB_UNLOCK(stcb);
1877                                 *value = (uint32_t) size;
1878                         } else {
1879                                 error = ENOTCONN;
1880                         }
1881                         *optsize = sizeof(uint32_t);
1882                 }
1883                 break;
1884         case SCTP_GET_PEER_ADDRESSES:
1885                 /*
1886                  * Get the address information, an array is passed in to
1887                  * fill up we pack it.
1888                  */
1889                 {
1890                         size_t cpsz, left;
1891                         struct sockaddr_storage *sas;
1892                         struct sctp_nets *net;
1893                         struct sctp_getaddresses *saddr;
1894
1895                         SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize);
1896                         SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id);
1897
1898                         if (stcb) {
1899                                 left = (*optsize) - sizeof(struct sctp_getaddresses);
1900                                 *optsize = sizeof(struct sctp_getaddresses);
1901                                 sas = (struct sockaddr_storage *)&saddr->addr[0];
1902
1903                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1904                                         if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) ||
1905                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) {
1906                                                 cpsz = sizeof(struct sockaddr_in6);
1907                                         } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) {
1908                                                 cpsz = sizeof(struct sockaddr_in);
1909                                         } else {
1910                                                 /* huh */
1911                                                 break;
1912                                         }
1913                                         if (left < cpsz) {
1914                                                 /* not enough room. */
1915                                                 break;
1916                                         }
1917                                         if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) &&
1918                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET)) {
1919                                                 /* Must map the address */
1920                                                 in6_sin_2_v4mapsin6((struct sockaddr_in *)&net->ro._l_addr,
1921                                                     (struct sockaddr_in6 *)sas);
1922                                         } else {
1923                                                 memcpy(sas, &net->ro._l_addr, cpsz);
1924                                         }
1925                                         ((struct sockaddr_in *)sas)->sin_port = stcb->rport;
1926
1927                                         sas = (struct sockaddr_storage *)((caddr_t)sas + cpsz);
1928                                         left -= cpsz;
1929                                         *optsize += cpsz;
1930                                 }
1931                                 SCTP_TCB_UNLOCK(stcb);
1932                         } else {
1933                                 error = ENOENT;
1934                         }
1935                 }
1936                 break;
1937         case SCTP_GET_LOCAL_ADDRESSES:
1938                 {
1939                         size_t limit, actual;
1940                         struct sockaddr_storage *sas;
1941                         struct sctp_getaddresses *saddr;
1942
1943                         SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize);
1944                         SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id);
1945
1946                         sas = (struct sockaddr_storage *)&saddr->addr[0];
1947                         limit = *optsize - sizeof(sctp_assoc_t);
1948                         actual = sctp_fill_up_addresses(inp, stcb, limit, sas);
1949                         if (stcb) {
1950                                 SCTP_TCB_UNLOCK(stcb);
1951                         }
1952                         *optsize = sizeof(struct sockaddr_storage) + actual;
1953                 }
1954                 break;
1955         case SCTP_PEER_ADDR_PARAMS:
1956                 {
1957                         struct sctp_paddrparams *paddrp;
1958                         struct sctp_nets *net;
1959
1960                         SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, *optsize);
1961                         SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id);
1962
1963                         net = NULL;
1964                         if (stcb) {
1965                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address);
1966                         } else {
1967                                 /*
1968                                  * We increment here since
1969                                  * sctp_findassociation_ep_addr() wil do a
1970                                  * decrement if it finds the stcb as long as
1971                                  * the locked tcb (last argument) is NOT a
1972                                  * TCB.. aka NULL.
1973                                  */
1974                                 SCTP_INP_INCR_REF(inp);
1975                                 stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddrp->spp_address, &net, NULL, NULL);
1976                                 if (stcb == NULL) {
1977                                         SCTP_INP_DECR_REF(inp);
1978                                 }
1979                         }
1980
1981                         if (stcb) {
1982                                 /* Applys to the specific association */
1983                                 paddrp->spp_flags = 0;
1984                                 if (net) {
1985                                         int ovh;
1986
1987                                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1988                                                 ovh = SCTP_MED_OVERHEAD;
1989                                         } else {
1990                                                 ovh = SCTP_MED_V4_OVERHEAD;
1991                                         }
1992
1993
1994                                         paddrp->spp_pathmaxrxt = net->failure_threshold;
1995                                         paddrp->spp_pathmtu = net->mtu - ovh;
1996                                         /* get flags for HB */
1997                                         if (net->dest_state & SCTP_ADDR_NOHB)
1998                                                 paddrp->spp_flags |= SPP_HB_DISABLE;
1999                                         else
2000                                                 paddrp->spp_flags |= SPP_HB_ENABLE;
2001                                         /* get flags for PMTU */
2002                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
2003                                                 paddrp->spp_flags |= SPP_PMTUD_ENABLE;
2004                                         } else {
2005                                                 paddrp->spp_flags |= SPP_PMTUD_DISABLE;
2006                                         }
2007 #ifdef INET
2008                                         if (net->ro._l_addr.sin.sin_family == AF_INET) {
2009                                                 paddrp->spp_ipv4_tos = net->tos_flowlabel & 0x000000fc;
2010                                                 paddrp->spp_flags |= SPP_IPV4_TOS;
2011                                         }
2012 #endif
2013 #ifdef INET6
2014                                         if (net->ro._l_addr.sin6.sin6_family == AF_INET6) {
2015                                                 paddrp->spp_ipv6_flowlabel = net->tos_flowlabel;
2016                                                 paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
2017                                         }
2018 #endif
2019                                 } else {
2020                                         /*
2021                                          * No destination so return default
2022                                          * value
2023                                          */
2024                                         int cnt = 0;
2025
2026                                         paddrp->spp_pathmaxrxt = stcb->asoc.def_net_failure;
2027                                         paddrp->spp_pathmtu = sctp_get_frag_point(stcb, &stcb->asoc);
2028 #ifdef INET
2029                                         paddrp->spp_ipv4_tos = stcb->asoc.default_tos & 0x000000fc;
2030                                         paddrp->spp_flags |= SPP_IPV4_TOS;
2031 #endif
2032 #ifdef INET6
2033                                         paddrp->spp_ipv6_flowlabel = stcb->asoc.default_flowlabel;
2034                                         paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
2035 #endif
2036                                         /* default settings should be these */
2037                                         if (stcb->asoc.hb_is_disabled == 0) {
2038                                                 paddrp->spp_flags |= SPP_HB_ENABLE;
2039                                         } else {
2040                                                 paddrp->spp_flags |= SPP_HB_DISABLE;
2041                                         }
2042                                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2043                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
2044                                                         cnt++;
2045                                                 }
2046                                         }
2047                                         if (cnt) {
2048                                                 paddrp->spp_flags |= SPP_PMTUD_ENABLE;
2049                                         }
2050                                 }
2051                                 paddrp->spp_hbinterval = stcb->asoc.heart_beat_delay;
2052                                 paddrp->spp_assoc_id = sctp_get_associd(stcb);
2053                                 SCTP_TCB_UNLOCK(stcb);
2054                         } else {
2055                                 /* Use endpoint defaults */
2056                                 SCTP_INP_RLOCK(inp);
2057                                 paddrp->spp_pathmaxrxt = inp->sctp_ep.def_net_failure;
2058                                 paddrp->spp_hbinterval = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
2059                                 paddrp->spp_assoc_id = (sctp_assoc_t) 0;
2060                                 /* get inp's default */
2061 #ifdef INET
2062                                 paddrp->spp_ipv4_tos = inp->ip_inp.inp.inp_ip_tos;
2063                                 paddrp->spp_flags |= SPP_IPV4_TOS;
2064 #endif
2065 #ifdef INET6
2066                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2067                                         paddrp->spp_ipv6_flowlabel = ((struct in6pcb *)inp)->in6p_flowinfo;
2068                                         paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
2069                                 }
2070 #endif
2071                                 /* can't return this */
2072                                 paddrp->spp_pathmtu = 0;
2073
2074                                 /* default behavior, no stcb */
2075                                 paddrp->spp_flags = SPP_PMTUD_ENABLE;
2076
2077                                 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
2078                                         paddrp->spp_flags |= SPP_HB_ENABLE;
2079                                 } else {
2080                                         paddrp->spp_flags |= SPP_HB_DISABLE;
2081                                 }
2082                                 SCTP_INP_RUNLOCK(inp);
2083                         }
2084                         *optsize = sizeof(struct sctp_paddrparams);
2085                 }
2086                 break;
2087         case SCTP_GET_PEER_ADDR_INFO:
2088                 {
2089                         struct sctp_paddrinfo *paddri;
2090                         struct sctp_nets *net;
2091
2092                         SCTP_CHECK_AND_CAST(paddri, optval, struct sctp_paddrinfo, *optsize);
2093                         SCTP_FIND_STCB(inp, stcb, paddri->spinfo_assoc_id);
2094
2095                         net = NULL;
2096                         if (stcb) {
2097                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddri->spinfo_address);
2098                         } else {
2099                                 /*
2100                                  * We increment here since
2101                                  * sctp_findassociation_ep_addr() wil do a
2102                                  * decrement if it finds the stcb as long as
2103                                  * the locked tcb (last argument) is NOT a
2104                                  * TCB.. aka NULL.
2105                                  */
2106                                 SCTP_INP_INCR_REF(inp);
2107                                 stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddri->spinfo_address, &net, NULL, NULL);
2108                                 if (stcb == NULL) {
2109                                         SCTP_INP_DECR_REF(inp);
2110                                 }
2111                         }
2112
2113                         if ((stcb) && (net)) {
2114                                 paddri->spinfo_state = net->dest_state & (SCTP_REACHABLE_MASK | SCTP_ADDR_NOHB);
2115                                 paddri->spinfo_cwnd = net->cwnd;
2116                                 paddri->spinfo_srtt = ((net->lastsa >> 2) + net->lastsv) >> 1;
2117                                 paddri->spinfo_rto = net->RTO;
2118                                 paddri->spinfo_assoc_id = sctp_get_associd(stcb);
2119                                 SCTP_TCB_UNLOCK(stcb);
2120                         } else {
2121                                 if (stcb) {
2122                                         SCTP_TCB_UNLOCK(stcb);
2123                                 }
2124                                 error = ENOENT;
2125                         }
2126                         *optsize = sizeof(struct sctp_paddrinfo);
2127                 }
2128                 break;
2129         case SCTP_PCB_STATUS:
2130                 {
2131                         struct sctp_pcbinfo *spcb;
2132
2133                         SCTP_CHECK_AND_CAST(spcb, optval, struct sctp_pcbinfo, *optsize);
2134                         sctp_fill_pcbinfo(spcb);
2135                         *optsize = sizeof(struct sctp_pcbinfo);
2136                 }
2137                 break;
2138
2139         case SCTP_STATUS:
2140                 {
2141                         struct sctp_nets *net;
2142                         struct sctp_status *sstat;
2143
2144                         SCTP_CHECK_AND_CAST(sstat, optval, struct sctp_status, *optsize);
2145                         SCTP_FIND_STCB(inp, stcb, sstat->sstat_assoc_id);
2146
2147                         if (stcb == NULL) {
2148                                 error = EINVAL;
2149                                 break;
2150                         }
2151                         /*
2152                          * I think passing the state is fine since
2153                          * sctp_constants.h will be available to the user
2154                          * land.
2155                          */
2156                         sstat->sstat_state = stcb->asoc.state;
2157                         sstat->sstat_rwnd = stcb->asoc.peers_rwnd;
2158                         sstat->sstat_unackdata = stcb->asoc.sent_queue_cnt;
2159                         /*
2160                          * We can't include chunks that have been passed to
2161                          * the socket layer. Only things in queue.
2162                          */
2163                         sstat->sstat_penddata = (stcb->asoc.cnt_on_reasm_queue +
2164                             stcb->asoc.cnt_on_all_streams);
2165
2166
2167                         sstat->sstat_instrms = stcb->asoc.streamincnt;
2168                         sstat->sstat_outstrms = stcb->asoc.streamoutcnt;
2169                         sstat->sstat_fragmentation_point = sctp_get_frag_point(stcb, &stcb->asoc);
2170                         memcpy(&sstat->sstat_primary.spinfo_address,
2171                             &stcb->asoc.primary_destination->ro._l_addr,
2172                             ((struct sockaddr *)(&stcb->asoc.primary_destination->ro._l_addr))->sa_len);
2173                         net = stcb->asoc.primary_destination;
2174                         ((struct sockaddr_in *)&sstat->sstat_primary.spinfo_address)->sin_port = stcb->rport;
2175                         /*
2176                          * Again the user can get info from sctp_constants.h
2177                          * for what the state of the network is.
2178                          */
2179                         sstat->sstat_primary.spinfo_state = net->dest_state & SCTP_REACHABLE_MASK;
2180                         sstat->sstat_primary.spinfo_cwnd = net->cwnd;
2181                         sstat->sstat_primary.spinfo_srtt = net->lastsa;
2182                         sstat->sstat_primary.spinfo_rto = net->RTO;
2183                         sstat->sstat_primary.spinfo_mtu = net->mtu;
2184                         sstat->sstat_primary.spinfo_assoc_id = sctp_get_associd(stcb);
2185                         SCTP_TCB_UNLOCK(stcb);
2186                         *optsize = sizeof(*sstat);
2187                 }
2188                 break;
2189         case SCTP_RTOINFO:
2190                 {
2191                         struct sctp_rtoinfo *srto;
2192
2193                         SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, *optsize);
2194                         SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id);
2195
2196                         if (stcb) {
2197                                 srto->srto_initial = stcb->asoc.initial_rto;
2198                                 srto->srto_max = stcb->asoc.maxrto;
2199                                 srto->srto_min = stcb->asoc.minrto;
2200                                 SCTP_TCB_UNLOCK(stcb);
2201                         } else {
2202                                 SCTP_INP_RLOCK(inp);
2203                                 srto->srto_initial = inp->sctp_ep.initial_rto;
2204                                 srto->srto_max = inp->sctp_ep.sctp_maxrto;
2205                                 srto->srto_min = inp->sctp_ep.sctp_minrto;
2206                                 SCTP_INP_RUNLOCK(inp);
2207                         }
2208                         *optsize = sizeof(*srto);
2209                 }
2210                 break;
2211         case SCTP_ASSOCINFO:
2212                 {
2213                         struct sctp_assocparams *sasoc;
2214                         uint32_t oldval;
2215
2216                         SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, *optsize);
2217                         SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id);
2218
2219                         if (stcb) {
2220                                 oldval = sasoc->sasoc_cookie_life;
2221                                 sasoc->sasoc_cookie_life = TICKS_TO_MSEC(stcb->asoc.cookie_life);
2222                                 sasoc->sasoc_asocmaxrxt = stcb->asoc.max_send_times;
2223                                 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets;
2224                                 sasoc->sasoc_peer_rwnd = stcb->asoc.peers_rwnd;
2225                                 sasoc->sasoc_local_rwnd = stcb->asoc.my_rwnd;
2226                                 SCTP_TCB_UNLOCK(stcb);
2227                         } else {
2228                                 SCTP_INP_RLOCK(inp);
2229                                 sasoc->sasoc_cookie_life = TICKS_TO_MSEC(inp->sctp_ep.def_cookie_life);
2230                                 sasoc->sasoc_asocmaxrxt = inp->sctp_ep.max_send_times;
2231                                 sasoc->sasoc_number_peer_destinations = 0;
2232                                 sasoc->sasoc_peer_rwnd = 0;
2233                                 sasoc->sasoc_local_rwnd = sbspace(&inp->sctp_socket->so_rcv);
2234                                 SCTP_INP_RUNLOCK(inp);
2235                         }
2236                         *optsize = sizeof(*sasoc);
2237                 }
2238                 break;
2239         case SCTP_DEFAULT_SEND_PARAM:
2240                 {
2241                         struct sctp_sndrcvinfo *s_info;
2242
2243                         SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, *optsize);
2244                         SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id);
2245
2246                         if (stcb) {
2247                                 memcpy(s_info, &stcb->asoc.def_send, sizeof(stcb->asoc.def_send));
2248                                 SCTP_TCB_UNLOCK(stcb);
2249                         } else {
2250                                 SCTP_INP_RLOCK(inp);
2251                                 memcpy(s_info, &inp->def_send, sizeof(inp->def_send));
2252                                 SCTP_INP_RUNLOCK(inp);
2253                         }
2254                         *optsize = sizeof(*s_info);
2255                 }
2256                 break;
2257         case SCTP_INITMSG:
2258                 {
2259                         struct sctp_initmsg *sinit;
2260
2261                         SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, *optsize);
2262                         SCTP_INP_RLOCK(inp);
2263                         sinit->sinit_num_ostreams = inp->sctp_ep.pre_open_stream_count;
2264                         sinit->sinit_max_instreams = inp->sctp_ep.max_open_streams_intome;
2265                         sinit->sinit_max_attempts = inp->sctp_ep.max_init_times;
2266                         sinit->sinit_max_init_timeo = inp->sctp_ep.initial_init_rto_max;
2267                         SCTP_INP_RUNLOCK(inp);
2268                         *optsize = sizeof(*sinit);
2269                 }
2270                 break;
2271         case SCTP_PRIMARY_ADDR:
2272                 /* we allow a "get" operation on this */
2273                 {
2274                         struct sctp_setprim *ssp;
2275
2276                         SCTP_CHECK_AND_CAST(ssp, optval, struct sctp_setprim, *optsize);
2277                         SCTP_FIND_STCB(inp, stcb, ssp->ssp_assoc_id);
2278
2279                         if (stcb) {
2280                                 /* simply copy out the sockaddr_storage... */
2281                                 int len;
2282
2283                                 len = *optsize;
2284                                 if (len > stcb->asoc.primary_destination->ro._l_addr.sa.sa_len)
2285                                         len = stcb->asoc.primary_destination->ro._l_addr.sa.sa_len;
2286
2287                                 memcpy(&ssp->ssp_addr,
2288                                     &stcb->asoc.primary_destination->ro._l_addr,
2289                                     len);
2290                                 SCTP_TCB_UNLOCK(stcb);
2291                         } else {
2292                                 error = EINVAL;
2293                         }
2294                         *optsize = sizeof(*ssp);
2295                 }
2296                 break;
2297
2298         case SCTP_HMAC_IDENT:
2299                 {
2300                         struct sctp_hmacalgo *shmac;
2301                         sctp_hmaclist_t *hmaclist;
2302                         uint32_t size;
2303                         int i;
2304
2305                         SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, *optsize);
2306
2307                         SCTP_INP_RLOCK(inp);
2308                         hmaclist = inp->sctp_ep.local_hmacs;
2309                         if (hmaclist == NULL) {
2310                                 /* no HMACs to return */
2311                                 *optsize = sizeof(*shmac);
2312                                 SCTP_INP_RUNLOCK(inp);
2313                                 break;
2314                         }
2315                         /* is there room for all of the hmac ids? */
2316                         size = sizeof(*shmac) + (hmaclist->num_algo *
2317                             sizeof(shmac->shmac_idents[0]));
2318                         if ((size_t)(*optsize) < size) {
2319                                 error = EINVAL;
2320                                 SCTP_INP_RUNLOCK(inp);
2321                                 break;
2322                         }
2323                         /* copy in the list */
2324                         for (i = 0; i < hmaclist->num_algo; i++)
2325                                 shmac->shmac_idents[i] = hmaclist->hmac[i];
2326                         SCTP_INP_RUNLOCK(inp);
2327                         *optsize = size;
2328                         break;
2329                 }
2330         case SCTP_AUTH_ACTIVE_KEY:
2331                 {
2332                         struct sctp_authkeyid *scact;
2333
2334                         SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, *optsize);
2335                         SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id);
2336
2337                         if (stcb) {
2338                                 /* get the active key on the assoc */
2339                                 scact->scact_keynumber = stcb->asoc.authinfo.assoc_keyid;
2340                                 SCTP_TCB_UNLOCK(stcb);
2341                         } else {
2342                                 /* get the endpoint active key */
2343                                 SCTP_INP_RLOCK(inp);
2344                                 scact->scact_keynumber = inp->sctp_ep.default_keyid;
2345                                 SCTP_INP_RUNLOCK(inp);
2346                         }
2347                         *optsize = sizeof(*scact);
2348                         break;
2349                 }
2350         case SCTP_LOCAL_AUTH_CHUNKS:
2351                 {
2352                         struct sctp_authchunks *sac;
2353                         sctp_auth_chklist_t *chklist = NULL;
2354                         size_t size = 0;
2355
2356                         SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize);
2357                         SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id);
2358
2359                         if (stcb) {
2360                                 /* get off the assoc */
2361                                 chklist = stcb->asoc.local_auth_chunks;
2362                                 /* is there enough space? */
2363                                 size = sctp_auth_get_chklist_size(chklist);
2364                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2365                                         error = EINVAL;
2366                                 } else {
2367                                         /* copy in the chunks */
2368                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2369                                 }
2370                                 SCTP_TCB_UNLOCK(stcb);
2371                         } else {
2372                                 /* get off the endpoint */
2373                                 SCTP_INP_RLOCK(inp);
2374                                 chklist = inp->sctp_ep.local_auth_chunks;
2375                                 /* is there enough space? */
2376                                 size = sctp_auth_get_chklist_size(chklist);
2377                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2378                                         error = EINVAL;
2379                                 } else {
2380                                         /* copy in the chunks */
2381                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2382                                 }
2383                                 SCTP_INP_RUNLOCK(inp);
2384                         }
2385                         *optsize = sizeof(struct sctp_authchunks) + size;
2386                         break;
2387                 }
2388         case SCTP_PEER_AUTH_CHUNKS:
2389                 {
2390                         struct sctp_authchunks *sac;
2391                         sctp_auth_chklist_t *chklist = NULL;
2392                         size_t size = 0;
2393
2394                         SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize);
2395                         SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id);
2396
2397                         if (stcb) {
2398                                 /* get off the assoc */
2399                                 chklist = stcb->asoc.peer_auth_chunks;
2400                                 /* is there enough space? */
2401                                 size = sctp_auth_get_chklist_size(chklist);
2402                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2403                                         error = EINVAL;
2404                                 } else {
2405                                         /* copy in the chunks */
2406                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2407                                 }
2408                                 SCTP_TCB_UNLOCK(stcb);
2409                         } else {
2410                                 error = ENOENT;
2411                         }
2412                         *optsize = sizeof(struct sctp_authchunks) + size;
2413                         break;
2414                 }
2415
2416
2417         default:
2418                 error = ENOPROTOOPT;
2419                 *optsize = 0;
2420                 break;
2421         }                       /* end switch (sopt->sopt_name) */
2422         return (error);
2423 }
2424
2425 static int
2426 sctp_setopt(struct socket *so, int optname, void *optval, size_t optsize,
2427     void *p)
2428 {
2429         int error, set_opt;
2430         uint32_t *mopt;
2431         struct sctp_tcb *stcb = NULL;
2432         struct sctp_inpcb *inp;
2433         uint32_t vrf_id;
2434
2435         if (optval == NULL) {
2436                 SCTP_PRINTF("optval is NULL\n");
2437                 return (EINVAL);
2438         }
2439         inp = (struct sctp_inpcb *)so->so_pcb;
2440         if (inp == 0) {
2441                 SCTP_PRINTF("inp is NULL?\n");
2442                 return EINVAL;
2443         }
2444         vrf_id = inp->def_vrf_id;
2445
2446         error = 0;
2447         switch (optname) {
2448         case SCTP_NODELAY:
2449         case SCTP_AUTOCLOSE:
2450         case SCTP_AUTO_ASCONF:
2451         case SCTP_EXPLICIT_EOR:
2452         case SCTP_DISABLE_FRAGMENTS:
2453         case SCTP_USE_EXT_RCVINFO:
2454         case SCTP_I_WANT_MAPPED_V4_ADDR:
2455                 /* copy in the option value */
2456                 SCTP_CHECK_AND_CAST(mopt, optval, uint32_t, optsize);
2457                 set_opt = 0;
2458                 if (error)
2459                         break;
2460                 switch (optname) {
2461                 case SCTP_DISABLE_FRAGMENTS:
2462                         set_opt = SCTP_PCB_FLAGS_NO_FRAGMENT;
2463                         break;
2464                 case SCTP_AUTO_ASCONF:
2465                         set_opt = SCTP_PCB_FLAGS_AUTO_ASCONF;
2466                         break;
2467                 case SCTP_EXPLICIT_EOR:
2468                         set_opt = SCTP_PCB_FLAGS_EXPLICIT_EOR;
2469                         break;
2470                 case SCTP_USE_EXT_RCVINFO:
2471                         set_opt = SCTP_PCB_FLAGS_EXT_RCVINFO;
2472                         break;
2473                 case SCTP_I_WANT_MAPPED_V4_ADDR:
2474                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2475                                 set_opt = SCTP_PCB_FLAGS_NEEDS_MAPPED_V4;
2476                         } else {
2477                                 return (EINVAL);
2478                         }
2479                         break;
2480                 case SCTP_NODELAY:
2481                         set_opt = SCTP_PCB_FLAGS_NODELAY;
2482                         break;
2483                 case SCTP_AUTOCLOSE:
2484                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2485                             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
2486                                 return (EINVAL);
2487                         }
2488                         set_opt = SCTP_PCB_FLAGS_AUTOCLOSE;
2489                         /*
2490                          * The value is in ticks. Note this does not effect
2491                          * old associations, only new ones.
2492                          */
2493                         inp->sctp_ep.auto_close_time = SEC_TO_TICKS(*mopt);
2494                         break;
2495                 }
2496                 SCTP_INP_WLOCK(inp);
2497                 if (*mopt != 0) {
2498                         sctp_feature_on(inp, set_opt);
2499                 } else {
2500                         sctp_feature_off(inp, set_opt);
2501                 }
2502                 SCTP_INP_WUNLOCK(inp);
2503                 break;
2504         case SCTP_PARTIAL_DELIVERY_POINT:
2505                 {
2506                         uint32_t *value;
2507
2508                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, optsize);
2509                         if (*value > SCTP_SB_LIMIT_RCV(so)) {
2510                                 error = EINVAL;
2511                                 break;
2512                         }
2513                         inp->partial_delivery_point = *value;
2514                 }
2515                 break;
2516         case SCTP_FRAGMENT_INTERLEAVE:
2517                 /* not yet until we re-write sctp_recvmsg() */
2518                 {
2519                         uint32_t *level;
2520
2521                         SCTP_CHECK_AND_CAST(level, optval, uint32_t, optsize);
2522                         if (*level == SCTP_FRAG_LEVEL_2) {
2523                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2524                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2525                         } else if (*level == SCTP_FRAG_LEVEL_1) {
2526                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2527                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2528                         } else if (*level == SCTP_FRAG_LEVEL_0) {
2529                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2530                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2531
2532                         } else {
2533                                 error = EINVAL;
2534                         }
2535                 }
2536                 break;
2537         case SCTP_CMT_ON_OFF:
2538                 {
2539                         struct sctp_assoc_value *av;
2540
2541                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2542                         if (sctp_cmt_on_off) {
2543                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2544                                 if (stcb) {
2545                                         stcb->asoc.sctp_cmt_on_off = (uint8_t) av->assoc_value;
2546                                         SCTP_TCB_UNLOCK(stcb);
2547                                 } else {
2548                                         error = ENOTCONN;
2549                                 }
2550                         } else {
2551                                 error = ENOPROTOOPT;
2552                         }
2553                 }
2554                 break;
2555                 /* JRS - Set socket option for pluggable congestion control */
2556         case SCTP_PLUGGABLE_CC:
2557                 {
2558                         struct sctp_assoc_value *av;
2559
2560                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2561                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2562                         if (stcb) {
2563                                 switch (av->assoc_value) {
2564                                         /*
2565                                          * JRS - Standard TCP congestion
2566                                          * control
2567                                          */
2568                                 case SCTP_CC_RFC2581:
2569                                         {
2570                                                 stcb->asoc.congestion_control_module = SCTP_CC_RFC2581;
2571                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_set_initial_cc_param;
2572                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_cwnd_update_after_sack;
2573                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_cwnd_update_after_fr;
2574                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_cwnd_update_after_timeout;
2575                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_cwnd_update_after_ecn_echo;
2576                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
2577                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
2578                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_cwnd_update_after_fr_timer;
2579                                                 SCTP_TCB_UNLOCK(stcb);
2580                                                 break;
2581                                         }
2582                                         /*
2583                                          * JRS - High Speed TCP congestion
2584                                          * control (Floyd)
2585                                          */
2586                                 case SCTP_CC_HSTCP:
2587                                         {
2588                                                 stcb->asoc.congestion_control_module = SCTP_CC_HSTCP;
2589                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_set_initial_cc_param;
2590                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_hs_cwnd_update_after_sack;
2591                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_hs_cwnd_update_after_fr;
2592                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_cwnd_update_after_timeout;
2593                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_cwnd_update_after_ecn_echo;
2594                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
2595                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
2596                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_cwnd_update_after_fr_timer;
2597                                                 SCTP_TCB_UNLOCK(stcb);
2598                                                 break;
2599                                         }
2600                                         /* JRS - HTCP congestion control */
2601                                 case SCTP_CC_HTCP:
2602                                         {
2603                                                 stcb->asoc.congestion_control_module = SCTP_CC_HTCP;
2604                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_htcp_set_initial_cc_param;
2605                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_htcp_cwnd_update_after_sack;
2606                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_htcp_cwnd_update_after_fr;
2607                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_htcp_cwnd_update_after_timeout;
2608                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_htcp_cwnd_update_after_ecn_echo;
2609                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
2610                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
2611                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_htcp_cwnd_update_after_fr_timer;
2612                                                 SCTP_TCB_UNLOCK(stcb);
2613                                                 break;
2614                                         }
2615                                         /*
2616                                          * JRS - All other values are
2617                                          * invalid
2618                                          */
2619                                 default:
2620                                         {
2621                                                 error = EINVAL;
2622                                                 SCTP_TCB_UNLOCK(stcb);
2623                                                 break;
2624                                         }
2625                                 }
2626                         } else {
2627                                 switch (av->assoc_value) {
2628                                 case SCTP_CC_RFC2581:
2629                                 case SCTP_CC_HSTCP:
2630                                 case SCTP_CC_HTCP:
2631                                         inp->sctp_ep.sctp_default_cc_module = av->assoc_value;
2632                                         break;
2633                                 default:
2634                                         error = EINVAL;
2635                                         break;
2636                                 };
2637                         }
2638                 }
2639                 break;
2640         case SCTP_CLR_STAT_LOG:
2641                 error = EOPNOTSUPP;
2642                 break;
2643         case SCTP_CONTEXT:
2644                 {
2645                         struct sctp_assoc_value *av;
2646
2647                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2648                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2649
2650                         if (stcb) {
2651                                 stcb->asoc.context = av->assoc_value;
2652                                 SCTP_TCB_UNLOCK(stcb);
2653                         } else {
2654                                 SCTP_INP_WLOCK(inp);
2655                                 inp->sctp_context = av->assoc_value;
2656                                 SCTP_INP_WUNLOCK(inp);
2657                         }
2658                 }
2659                 break;
2660         case SCTP_VRF_ID:
2661                 {
2662                         uint32_t *default_vrfid;
2663
2664                         SCTP_CHECK_AND_CAST(default_vrfid, optval, uint32_t, optsize);
2665                         if (*default_vrfid > SCTP_MAX_VRF_ID) {
2666                                 error = EINVAL;
2667                                 break;
2668                         }
2669                         inp->def_vrf_id = *default_vrfid;
2670                         break;
2671                 }
2672         case SCTP_DEL_VRF_ID:
2673                 {
2674                         error = EOPNOTSUPP;
2675                         break;
2676                 }
2677         case SCTP_ADD_VRF_ID:
2678                 {
2679                         error = EOPNOTSUPP;
2680                         break;
2681                 }
2682         case SCTP_DELAYED_SACK:
2683                 {
2684                         struct sctp_sack_info *sack;
2685
2686                         SCTP_CHECK_AND_CAST(sack, optval, struct sctp_sack_info, optsize);
2687                         SCTP_FIND_STCB(inp, stcb, sack->sack_assoc_id);
2688                         if (sack->sack_delay) {
2689                                 if (sack->sack_delay > SCTP_MAX_SACK_DELAY)
2690                                         sack->sack_delay = SCTP_MAX_SACK_DELAY;
2691                         }
2692                         if (stcb) {
2693                                 if (sack->sack_delay) {
2694                                         if (MSEC_TO_TICKS(sack->sack_delay) < 1) {
2695                                                 sack->sack_delay = TICKS_TO_MSEC(1);
2696                                         }
2697                                         stcb->asoc.delayed_ack = sack->sack_delay;
2698                                 }
2699                                 if (sack->sack_freq) {
2700                                         stcb->asoc.sack_freq = sack->sack_freq;
2701                                 }
2702                                 SCTP_TCB_UNLOCK(stcb);
2703                         } else {
2704                                 SCTP_INP_WLOCK(inp);
2705                                 if (sack->sack_delay) {
2706                                         if (MSEC_TO_TICKS(sack->sack_delay) < 1) {
2707                                                 sack->sack_delay = TICKS_TO_MSEC(1);
2708                                         }
2709                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(sack->sack_delay);
2710                                 }
2711                                 if (sack->sack_freq) {
2712                                         inp->sctp_ep.sctp_sack_freq = sack->sack_freq;
2713                                 }
2714                                 SCTP_INP_WUNLOCK(inp);
2715                         }
2716                         break;
2717                 }
2718         case SCTP_AUTH_CHUNK:
2719                 {
2720                         struct sctp_authchunk *sauth;
2721
2722                         SCTP_CHECK_AND_CAST(sauth, optval, struct sctp_authchunk, optsize);
2723
2724                         SCTP_INP_WLOCK(inp);
2725                         if (sctp_auth_add_chunk(sauth->sauth_chunk, inp->sctp_ep.local_auth_chunks))
2726                                 error = EINVAL;
2727                         SCTP_INP_WUNLOCK(inp);
2728                         break;
2729                 }
2730         case SCTP_AUTH_KEY:
2731                 {
2732                         struct sctp_authkey *sca;
2733                         struct sctp_keyhead *shared_keys;
2734                         sctp_sharedkey_t *shared_key;
2735                         sctp_key_t *key = NULL;
2736                         size_t size;
2737
2738                         SCTP_CHECK_AND_CAST(sca, optval, struct sctp_authkey, optsize);
2739                         SCTP_FIND_STCB(inp, stcb, sca->sca_assoc_id);
2740                         size = optsize - sizeof(*sca);
2741
2742                         if (stcb) {
2743                                 /* set it on the assoc */
2744                                 shared_keys = &stcb->asoc.shared_keys;
2745                                 /* clear the cached keys for this key id */
2746                                 sctp_clear_cachedkeys(stcb, sca->sca_keynumber);
2747                                 /*
2748                                  * create the new shared key and
2749                                  * insert/replace it
2750                                  */
2751                                 if (size > 0) {
2752                                         key = sctp_set_key(sca->sca_key, (uint32_t) size);
2753                                         if (key == NULL) {
2754                                                 error = ENOMEM;
2755                                                 SCTP_TCB_UNLOCK(stcb);
2756                                                 break;
2757                                         }
2758                                 }
2759                                 shared_key = sctp_alloc_sharedkey();
2760                                 if (shared_key == NULL) {
2761                                         sctp_free_key(key);
2762                                         error = ENOMEM;
2763                                         SCTP_TCB_UNLOCK(stcb);
2764                                         break;
2765                                 }
2766                                 shared_key->key = key;
2767                                 shared_key->keyid = sca->sca_keynumber;
2768                                 sctp_insert_sharedkey(shared_keys, shared_key);
2769                                 SCTP_TCB_UNLOCK(stcb);
2770                         } else {
2771                                 /* set it on the endpoint */
2772                                 SCTP_INP_WLOCK(inp);
2773                                 shared_keys = &inp->sctp_ep.shared_keys;
2774                                 /*
2775                                  * clear the cached keys on all assocs for
2776                                  * this key id
2777                                  */
2778                                 sctp_clear_cachedkeys_ep(inp, sca->sca_keynumber);
2779                                 /*
2780                                  * create the new shared key and
2781                                  * insert/replace it
2782                                  */
2783                                 if (size > 0) {
2784                                         key = sctp_set_key(sca->sca_key, (uint32_t) size);
2785                                         if (key == NULL) {
2786                                                 error = ENOMEM;
2787                                                 SCTP_INP_WUNLOCK(inp);
2788                                                 break;
2789                                         }
2790                                 }
2791                                 shared_key = sctp_alloc_sharedkey();
2792                                 if (shared_key == NULL) {
2793                                         sctp_free_key(key);
2794                                         error = ENOMEM;
2795                                         SCTP_INP_WUNLOCK(inp);
2796                                         break;
2797                                 }
2798                                 shared_key->key = key;
2799                                 shared_key->keyid = sca->sca_keynumber;
2800                                 sctp_insert_sharedkey(shared_keys, shared_key);
2801                                 SCTP_INP_WUNLOCK(inp);
2802                         }
2803                         break;
2804                 }
2805         case SCTP_HMAC_IDENT:
2806                 {
2807                         struct sctp_hmacalgo *shmac;
2808                         sctp_hmaclist_t *hmaclist;
2809                         uint32_t hmacid;
2810                         size_t size, i, found;
2811
2812                         SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, optsize);
2813                         size = (optsize - sizeof(*shmac)) / sizeof(shmac->shmac_idents[0]);
2814                         hmaclist = sctp_alloc_hmaclist(size);
2815                         if (hmaclist == NULL) {
2816                                 error = ENOMEM;
2817                                 break;
2818                         }
2819                         for (i = 0; i < size; i++) {
2820                                 hmacid = shmac->shmac_idents[i];
2821                                 if (sctp_auth_add_hmacid(hmaclist, (uint16_t) hmacid)) {
2822                                          /* invalid HMACs were found */ ;
2823                                         error = EINVAL;
2824                                         sctp_free_hmaclist(hmaclist);
2825                                         goto sctp_set_hmac_done;
2826                                 }
2827                         }
2828                         found = 0;
2829                         for (i = 0; i < hmaclist->num_algo; i++) {
2830                                 if (hmaclist->hmac[i] == SCTP_AUTH_HMAC_ID_SHA1) {
2831                                         /* already in list */
2832                                         found = 1;
2833                                 }
2834                         }
2835                         if (!found) {
2836                                 sctp_free_hmaclist(hmaclist);
2837                                 error = EINVAL;
2838                                 break;
2839                         }
2840                         /* set it on the endpoint */
2841                         SCTP_INP_WLOCK(inp);
2842                         if (inp->sctp_ep.local_hmacs)
2843                                 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
2844                         inp->sctp_ep.local_hmacs = hmaclist;
2845                         SCTP_INP_WUNLOCK(inp);
2846         sctp_set_hmac_done:
2847                         break;
2848                 }
2849         case SCTP_AUTH_ACTIVE_KEY:
2850                 {
2851                         struct sctp_authkeyid *scact;
2852
2853                         SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, optsize);
2854                         SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id);
2855
2856                         /* set the active key on the right place */
2857                         if (stcb) {
2858                                 /* set the active key on the assoc */
2859                                 if (sctp_auth_setactivekey(stcb, scact->scact_keynumber))
2860                                         error = EINVAL;
2861                                 SCTP_TCB_UNLOCK(stcb);
2862                         } else {
2863                                 /* set the active key on the endpoint */
2864                                 SCTP_INP_WLOCK(inp);
2865                                 if (sctp_auth_setactivekey_ep(inp, scact->scact_keynumber))
2866                                         error = EINVAL;
2867                                 SCTP_INP_WUNLOCK(inp);
2868                         }
2869                         break;
2870                 }
2871         case SCTP_AUTH_DELETE_KEY:
2872                 {
2873                         struct sctp_authkeyid *scdel;
2874
2875                         SCTP_CHECK_AND_CAST(scdel, optval, struct sctp_authkeyid, optsize);
2876                         SCTP_FIND_STCB(inp, stcb, scdel->scact_assoc_id);
2877
2878                         /* delete the key from the right place */
2879                         if (stcb) {
2880                                 if (sctp_delete_sharedkey(stcb, scdel->scact_keynumber))
2881                                         error = EINVAL;
2882                                 SCTP_TCB_UNLOCK(stcb);
2883                         } else {
2884                                 SCTP_INP_WLOCK(inp);
2885                                 if (sctp_delete_sharedkey_ep(inp, scdel->scact_keynumber))
2886                                         error = EINVAL;
2887                                 SCTP_INP_WUNLOCK(inp);
2888                         }
2889                         break;
2890                 }
2891
2892         case SCTP_RESET_STREAMS:
2893                 {
2894                         struct sctp_stream_reset *strrst;
2895                         uint8_t send_in = 0, send_tsn = 0, send_out = 0;
2896                         int i;
2897
2898                         SCTP_CHECK_AND_CAST(strrst, optval, struct sctp_stream_reset, optsize);
2899                         SCTP_FIND_STCB(inp, stcb, strrst->strrst_assoc_id);
2900
2901                         if (stcb == NULL) {
2902                                 error = ENOENT;
2903                                 break;
2904                         }
2905                         if (stcb->asoc.peer_supports_strreset == 0) {
2906                                 /*
2907                                  * Peer does not support it, we return
2908                                  * protocol not supported since this is true
2909                                  * for this feature and this peer, not the
2910                                  * socket request in general.
2911                                  */
2912                                 error = EPROTONOSUPPORT;
2913                                 SCTP_TCB_UNLOCK(stcb);
2914                                 break;
2915                         }
2916                         if (stcb->asoc.stream_reset_outstanding) {
2917                                 error = EALREADY;
2918                                 SCTP_TCB_UNLOCK(stcb);
2919                                 break;
2920                         }
2921                         if (strrst->strrst_flags == SCTP_RESET_LOCAL_RECV) {
2922                                 send_in = 1;
2923                         } else if (strrst->strrst_flags == SCTP_RESET_LOCAL_SEND) {
2924                                 send_out = 1;
2925                         } else if (strrst->strrst_flags == SCTP_RESET_BOTH) {
2926                                 send_in = 1;
2927                                 send_out = 1;
2928                         } else if (strrst->strrst_flags == SCTP_RESET_TSN) {
2929                                 send_tsn = 1;
2930                         } else {
2931                                 error = EINVAL;
2932                                 SCTP_TCB_UNLOCK(stcb);
2933                                 break;
2934                         }
2935                         for (i = 0; i < strrst->strrst_num_streams; i++) {
2936                                 if ((send_in) &&
2937
2938                                     (strrst->strrst_list[i] > stcb->asoc.streamincnt)) {
2939                                         error = EINVAL;
2940                                         goto get_out;
2941                                 }
2942                                 if ((send_out) &&
2943                                     (strrst->strrst_list[i] > stcb->asoc.streamoutcnt)) {
2944                                         error = EINVAL;
2945                                         goto get_out;
2946                                 }
2947                         }
2948                         if (error) {
2949                 get_out:
2950                                 SCTP_TCB_UNLOCK(stcb);
2951                                 break;
2952                         }
2953                         error = sctp_send_str_reset_req(stcb, strrst->strrst_num_streams,
2954                             strrst->strrst_list,
2955                             send_out, (stcb->asoc.str_reset_seq_in - 3),
2956                             send_in, send_tsn);
2957
2958                         sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_REQ);
2959                         SCTP_TCB_UNLOCK(stcb);
2960                 }
2961                 break;
2962
2963         case SCTP_CONNECT_X:
2964                 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) {
2965                         error = EINVAL;
2966                         break;
2967                 }
2968                 error = sctp_do_connect_x(so, inp, optval, optsize, p, 0);
2969                 break;
2970
2971         case SCTP_CONNECT_X_DELAYED:
2972                 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) {
2973                         error = EINVAL;
2974                         break;
2975                 }
2976                 error = sctp_do_connect_x(so, inp, optval, optsize, p, 1);
2977                 break;
2978
2979         case SCTP_CONNECT_X_COMPLETE:
2980                 {
2981                         struct sockaddr *sa;
2982                         struct sctp_nets *net;
2983
2984                         /* FIXME MT: check correct? */
2985                         SCTP_CHECK_AND_CAST(sa, optval, struct sockaddr, optsize);
2986
2987                         /* find tcb */
2988                         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
2989                                 SCTP_INP_RLOCK(inp);
2990                                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
2991                                 if (stcb) {
2992                                         SCTP_TCB_LOCK(stcb);
2993                                         net = sctp_findnet(stcb, sa);
2994                                 }
2995                                 SCTP_INP_RUNLOCK(inp);
2996                         } else {
2997                                 /*
2998                                  * We increment here since
2999                                  * sctp_findassociation_ep_addr() wil do a
3000                                  * decrement if it finds the stcb as long as
3001                                  * the locked tcb (last argument) is NOT a
3002                                  * TCB.. aka NULL.
3003                                  */
3004                                 SCTP_INP_INCR_REF(inp);
3005                                 stcb = sctp_findassociation_ep_addr(&inp, sa, &net, NULL, NULL);
3006                                 if (stcb == NULL) {
3007                                         SCTP_INP_DECR_REF(inp);
3008                                 }
3009                         }
3010
3011                         if (stcb == NULL) {
3012                                 error = ENOENT;
3013                                 break;
3014                         }
3015                         if (stcb->asoc.delayed_connection == 1) {
3016                                 stcb->asoc.delayed_connection = 0;
3017                                 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
3018                                 sctp_timer_stop(SCTP_TIMER_TYPE_INIT, inp, stcb,
3019                                     stcb->asoc.primary_destination,
3020                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_9);
3021                                 sctp_send_initiate(inp, stcb);
3022                         } else {
3023                                 /*
3024                                  * already expired or did not use delayed
3025                                  * connectx
3026                                  */
3027                                 error = EALREADY;
3028                         }
3029                         SCTP_TCB_UNLOCK(stcb);
3030                 }
3031                 break;
3032         case SCTP_MAX_BURST:
3033                 {
3034                         uint8_t *burst;
3035
3036                         SCTP_CHECK_AND_CAST(burst, optval, uint8_t, optsize);
3037
3038                         SCTP_INP_WLOCK(inp);
3039                         if (*burst) {
3040                                 inp->sctp_ep.max_burst = *burst;
3041                         }
3042                         SCTP_INP_WUNLOCK(inp);
3043                 }
3044                 break;
3045         case SCTP_MAXSEG:
3046                 {
3047                         struct sctp_assoc_value *av;
3048                         int ovh;
3049
3050                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
3051                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
3052
3053                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
3054                                 ovh = SCTP_MED_OVERHEAD;
3055                         } else {
3056                                 ovh = SCTP_MED_V4_OVERHEAD;
3057                         }
3058                         if (stcb) {
3059                                 if (av->assoc_value) {
3060                                         stcb->asoc.sctp_frag_point = (av->assoc_value + ovh);
3061                                 } else {
3062                                         stcb->asoc.sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
3063                                 }
3064                                 SCTP_TCB_UNLOCK(stcb);
3065                         } else {
3066                                 SCTP_INP_WLOCK(inp);
3067                                 /*
3068                                  * FIXME MT: I think this is not in tune
3069                                  * with the API ID
3070                                  */
3071                                 if (av->assoc_value) {
3072                                         inp->sctp_frag_point = (av->assoc_value + ovh);
3073                                 } else {
3074                                         inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
3075                                 }
3076                                 SCTP_INP_WUNLOCK(inp);
3077                         }
3078                 }
3079                 break;
3080         case SCTP_EVENTS:
3081                 {
3082                         struct sctp_event_subscribe *events;
3083
3084                         SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, optsize);
3085
3086                         SCTP_INP_WLOCK(inp);
3087                         if (events->sctp_data_io_event) {
3088                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
3089                         } else {
3090                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
3091                         }
3092
3093                         if (events->sctp_association_event) {
3094                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
3095                         } else {
3096                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
3097                         }
3098
3099                         if (events->sctp_address_event) {
3100                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
3101                         } else {
3102                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
3103                         }
3104
3105                         if (events->sctp_send_failure_event) {
3106                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
3107                         } else {
3108                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
3109                         }
3110
3111                         if (events->sctp_peer_error_event) {
3112                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR);
3113                         } else {
3114                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPEERERR);
3115                         }
3116
3117                         if (events->sctp_shutdown_event) {
3118                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
3119                         } else {
3120                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
3121                         }
3122
3123                         if (events->sctp_partial_delivery_event) {
3124                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
3125                         } else {
3126                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
3127                         }
3128
3129                         if (events->sctp_adaptation_layer_event) {
3130                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
3131                         } else {
3132                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
3133                         }
3134
3135                         if (events->sctp_authentication_event) {
3136                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT);
3137                         } else {
3138                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTHEVNT);
3139                         }
3140
3141                         if (events->sctp_stream_reset_events) {
3142                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
3143                         } else {
3144                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
3145                         }
3146                         SCTP_INP_WUNLOCK(inp);
3147                 }
3148                 break;
3149
3150         case SCTP_ADAPTATION_LAYER:
3151                 {
3152                         struct sctp_setadaptation *adap_bits;
3153
3154                         SCTP_CHECK_AND_CAST(adap_bits, optval, struct sctp_setadaptation, optsize);
3155                         SCTP_INP_WLOCK(inp);
3156                         inp->sctp_ep.adaptation_layer_indicator = adap_bits->ssb_adaptation_ind;
3157                         SCTP_INP_WUNLOCK(inp);
3158                 }
3159                 break;
3160 #ifdef SCTP_DEBUG
3161         case SCTP_SET_INITIAL_DBG_SEQ:
3162                 {
3163                         uint32_t *vvv;
3164
3165                         SCTP_CHECK_AND_CAST(vvv, optval, uint32_t, optsize);
3166                         SCTP_INP_WLOCK(inp);
3167                         inp->sctp_ep.initial_sequence_debug = *vvv;
3168                         SCTP_INP_WUNLOCK(inp);
3169                 }
3170                 break;
3171 #endif
3172         case SCTP_DEFAULT_SEND_PARAM:
3173                 {
3174                         struct sctp_sndrcvinfo *s_info;
3175
3176                         SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, optsize);
3177                         SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id);
3178
3179                         if (stcb) {
3180                                 if (s_info->sinfo_stream <= stcb->asoc.streamoutcnt) {
3181                                         memcpy(&stcb->asoc.def_send, s_info, min(optsize, sizeof(stcb->asoc.def_send)));
3182                                 } else {
3183                                         error = EINVAL;
3184                                 }
3185                                 SCTP_TCB_UNLOCK(stcb);
3186                         } else {
3187                                 SCTP_INP_WLOCK(inp);
3188                                 memcpy(&inp->def_send, s_info, min(optsize, sizeof(inp->def_send)));
3189                                 SCTP_INP_WUNLOCK(inp);
3190                         }
3191                 }
3192                 break;
3193         case SCTP_PEER_ADDR_PARAMS:
3194                 /* Applys to the specific association */
3195                 {
3196                         struct sctp_paddrparams *paddrp;
3197                         struct sctp_nets *net;
3198
3199                         SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, optsize);
3200                         SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id);
3201                         net = NULL;
3202                         if (stcb) {
3203                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address);
3204                         } else {
3205                                 /*
3206                                  * We increment here since
3207                                  * sctp_findassociation_ep_addr() wil do a
3208                                  * decrement if it finds the stcb as long as
3209                                  * the locked tcb (last argument) is NOT a
3210                                  * TCB.. aka NULL.
3211                                  */
3212                                 SCTP_INP_INCR_REF(inp);
3213                                 stcb = sctp_findassociation_ep_addr(&inp,
3214                                     (struct sockaddr *)&paddrp->spp_address,
3215                                     &net, NULL, NULL);
3216                                 if (stcb == NULL) {
3217                                         SCTP_INP_DECR_REF(inp);
3218                                 }
3219                         }
3220                         /* sanity checks */
3221                         if ((paddrp->spp_flags & SPP_HB_ENABLE) && (paddrp->spp_flags & SPP_HB_DISABLE)) {
3222                                 if (stcb)
3223                                         SCTP_TCB_UNLOCK(stcb);
3224                                 return (EINVAL);
3225                         }
3226                         if ((paddrp->spp_flags & SPP_PMTUD_ENABLE) && (paddrp->spp_flags & SPP_PMTUD_DISABLE)) {
3227                                 if (stcb)
3228                                         SCTP_TCB_UNLOCK(stcb);
3229                                 return (EINVAL);
3230                         }
3231                         if (stcb) {
3232                                 /************************TCB SPECIFIC SET ******************/
3233                                 /*
3234                                  * do we change the timer for HB, we run
3235                                  * only one?
3236                                  */
3237                                 int ovh = 0;
3238
3239                                 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
3240                                         ovh = SCTP_MED_OVERHEAD;
3241                                 } else {
3242                                         ovh = SCTP_MED_V4_OVERHEAD;
3243                                 }
3244
3245                                 if (paddrp->spp_hbinterval)
3246                                         stcb->asoc.heart_beat_delay = paddrp->spp_hbinterval;
3247                                 else if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO)
3248                                         stcb->asoc.heart_beat_delay = 0;
3249
3250                                 /* network sets ? */
3251                                 if (net) {
3252                                         /************************NET SPECIFIC SET ******************/
3253                                         if (paddrp->spp_flags & SPP_HB_DEMAND) {
3254                                                 /* on demand HB */
3255                                                 if (sctp_send_hb(stcb, 1, net) < 0) {
3256                                                         /* asoc destroyed */
3257                                                         error = EINVAL;
3258                                                         break;
3259                                                 }
3260                                         }
3261                                         if (paddrp->spp_flags & SPP_HB_DISABLE) {
3262                                                 net->dest_state |= SCTP_ADDR_NOHB;
3263                                         }
3264                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3265                                                 net->dest_state &= ~SCTP_ADDR_NOHB;
3266                                         }
3267                                         if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && (paddrp->spp_pathmtu >= SCTP_SMALLEST_PMTU)) {
3268                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3269                                                         sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
3270                                                             SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10);
3271                                                 }
3272                                                 if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) {
3273                                                         net->mtu = paddrp->spp_pathmtu + ovh;
3274                                                         if (net->mtu < stcb->asoc.smallest_mtu) {
3275 #ifdef SCTP_PRINT_FOR_B_AND_M
3276                                                                 SCTP_PRINTF("SCTP_PMTU_DISABLE calls sctp_pathmtu_adjustment:%d\n",
3277                                                                     net->mtu);
3278 #endif
3279                                                                 sctp_pathmtu_adjustment(inp, stcb, net, net->mtu);
3280                                                         }
3281                                                 }
3282                                         }
3283                                         if (paddrp->spp_flags & SPP_PMTUD_ENABLE) {
3284                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3285                                                         sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
3286                                                 }
3287                                         }
3288                                         if (paddrp->spp_pathmaxrxt)
3289                                                 net->failure_threshold = paddrp->spp_pathmaxrxt;
3290 #ifdef INET
3291                                         if (paddrp->spp_flags & SPP_IPV4_TOS) {
3292                                                 if (net->ro._l_addr.sin.sin_family == AF_INET) {
3293                                                         net->tos_flowlabel = paddrp->spp_ipv4_tos & 0x000000fc;
3294                                                 }
3295                                         }
3296 #endif
3297 #ifdef INET6
3298                                         if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL) {
3299                                                 if (net->ro._l_addr.sin6.sin6_family == AF_INET6) {
3300                                                         net->tos_flowlabel = paddrp->spp_ipv6_flowlabel;
3301                                                 }
3302                                         }
3303 #endif
3304                                 } else {
3305                                         /************************ASSOC ONLY -- NO NET SPECIFIC SET ******************/
3306                                         if (paddrp->spp_pathmaxrxt)
3307                                                 stcb->asoc.def_net_failure = paddrp->spp_pathmaxrxt;
3308
3309                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3310                                                 /* Turn back on the timer */
3311                                                 stcb->asoc.hb_is_disabled = 0;
3312                                                 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
3313                                         }
3314                                         if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && (paddrp->spp_pathmtu >= SCTP_SMALLEST_PMTU)) {
3315                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3316                                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3317                                                                 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
3318                                                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10);
3319                                                         }
3320                                                         if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) {
3321                                                                 net->mtu = paddrp->spp_pathmtu + ovh;
3322                                                                 if (net->mtu < stcb->asoc.smallest_mtu) {
3323 #ifdef SCTP_PRINT_FOR_B_AND_M
3324                                                                         SCTP_PRINTF("SCTP_PMTU_DISABLE calls sctp_pathmtu_adjustment:%d\n",
3325                                                                             net->mtu);
3326 #endif
3327                                                                         sctp_pathmtu_adjustment(inp, stcb, net, net->mtu);
3328                                                                 }
3329                                                         }
3330                                                 }
3331                                         }
3332                                         if (paddrp->spp_flags & SPP_PMTUD_ENABLE) {
3333                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3334                                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3335                                                                 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
3336                                                         }
3337                                                 }
3338                                         }
3339                                         if (paddrp->spp_flags & SPP_HB_DISABLE) {
3340                                                 int cnt_of_unconf = 0;
3341                                                 struct sctp_nets *lnet;
3342
3343                                                 stcb->asoc.hb_is_disabled = 1;
3344                                                 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
3345                                                         if (lnet->dest_state & SCTP_ADDR_UNCONFIRMED) {
3346                                                                 cnt_of_unconf++;
3347                                                         }
3348                                                 }
3349                                                 /*
3350                                                  * stop the timer ONLY if we
3351                                                  * have no unconfirmed
3352                                                  * addresses
3353                                                  */
3354                                                 if (cnt_of_unconf == 0) {
3355                                                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3356                                                                 sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net,
3357                                                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_11);
3358                                                         }
3359                                                 }
3360                                         }
3361                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3362                                                 /* start up the timer. */
3363                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3364                                                         sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
3365                                                 }
3366                                         }
3367 #ifdef INET
3368                                         if (paddrp->spp_flags & SPP_IPV4_TOS)
3369                                                 stcb->asoc.default_tos = paddrp->spp_ipv4_tos & 0x000000fc;
3370 #endif
3371 #ifdef INET6
3372                                         if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL)
3373                                                 stcb->asoc.default_flowlabel = paddrp->spp_ipv6_flowlabel;
3374 #endif
3375
3376                                 }
3377                                 SCTP_TCB_UNLOCK(stcb);
3378                         } else {
3379                                 /************************NO TCB, SET TO default stuff ******************/
3380                                 SCTP_INP_WLOCK(inp);
3381                                 /*
3382                                  * For the TOS/FLOWLABEL stuff you set it
3383                                  * with the options on the socket
3384                                  */
3385                                 if (paddrp->spp_pathmaxrxt) {
3386                                         inp->sctp_ep.def_net_failure = paddrp->spp_pathmaxrxt;
3387                                 }
3388                                 if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO)
3389                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = 0;
3390                                 else if (paddrp->spp_hbinterval) {
3391                                         if (paddrp->spp_hbinterval > SCTP_MAX_HB_INTERVAL)
3392                                                 paddrp->spp_hbinterval = SCTP_MAX_HB_INTERVAL;
3393                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(paddrp->spp_hbinterval);
3394                                 }
3395                                 if (paddrp->spp_flags & SPP_HB_ENABLE) {
3396                                         sctp_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
3397
3398                                 } else if (paddrp->spp_flags & SPP_HB_DISABLE) {
3399                                         sctp_feature_on(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
3400                                 }
3401                                 SCTP_INP_WUNLOCK(inp);
3402                         }
3403                 }
3404                 break;
3405         case SCTP_RTOINFO:
3406                 {
3407                         struct sctp_rtoinfo *srto;
3408                         uint32_t new_init, new_min, new_max;
3409
3410                         SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, optsize);
3411                         SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id);
3412
3413                         if (stcb) {
3414                                 if (srto->srto_initial)
3415                                         new_init = srto->srto_initial;
3416                                 else
3417                                         new_init = stcb->asoc.initial_rto;
3418                                 if (srto->srto_max)
3419                                         new_max = srto->srto_max;
3420                                 else
3421                                         new_max = stcb->asoc.maxrto;
3422                                 if (srto->srto_min)
3423                                         new_min = srto->srto_min;
3424                                 else
3425                                         new_min = stcb->asoc.minrto;
3426                                 if ((new_min <= new_init) && (new_init <= new_max)) {
3427                                         stcb->asoc.initial_rto = new_init;
3428                                         stcb->asoc.maxrto = new_max;
3429                                         stcb->asoc.minrto = new_min;
3430                                 } else {
3431                                         error = EDOM;
3432                                 }
3433                                 SCTP_TCB_UNLOCK(stcb);
3434                         } else {
3435                                 SCTP_INP_WLOCK(inp);
3436                                 if (srto->srto_initial)
3437                                         new_init = srto->srto_initial;
3438                                 else
3439                                         new_init = inp->sctp_ep.initial_rto;
3440                                 if (srto->srto_max)
3441                                         new_max = srto->srto_max;
3442                                 else
3443                                         new_max = inp->sctp_ep.sctp_maxrto;
3444                                 if (srto->srto_min)
3445                                         new_min = srto->srto_min;
3446                                 else
3447                                         new_min = inp->sctp_ep.sctp_minrto;
3448                                 if ((new_min <= new_init) && (new_init <= new_max)) {
3449                                         inp->sctp_ep.initial_rto = new_init;
3450                                         inp->sctp_ep.sctp_maxrto = new_max;
3451                                         inp->sctp_ep.sctp_minrto = new_min;
3452                                 } else {
3453                                         error = EDOM;
3454                                 }
3455                                 SCTP_INP_WUNLOCK(inp);
3456                         }
3457                 }
3458                 break;
3459         case SCTP_ASSOCINFO:
3460                 {
3461                         struct sctp_assocparams *sasoc;
3462
3463                         SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, optsize);
3464                         SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id);
3465                         if (sasoc->sasoc_cookie_life) {
3466                                 /* boundary check the cookie life */
3467                                 if (sasoc->sasoc_cookie_life < 1000)
3468                                         sasoc->sasoc_cookie_life = 1000;
3469                                 if (sasoc->sasoc_cookie_life > SCTP_MAX_COOKIE_LIFE) {
3470                                         sasoc->sasoc_cookie_life = SCTP_MAX_COOKIE_LIFE;
3471                                 }
3472                         }
3473                         if (stcb) {
3474                                 if (sasoc->sasoc_asocmaxrxt)
3475                                         stcb->asoc.max_send_times = sasoc->sasoc_asocmaxrxt;
3476                                 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets;
3477                                 sasoc->sasoc_peer_rwnd = 0;
3478                                 sasoc->sasoc_local_rwnd = 0;
3479                                 if (sasoc->sasoc_cookie_life) {
3480                                         stcb->asoc.cookie_life = sasoc->sasoc_cookie_life;
3481
3482                                 }
3483                                 SCTP_TCB_UNLOCK(stcb);
3484                         } else {
3485                                 SCTP_INP_WLOCK(inp);
3486                                 if (sasoc->sasoc_asocmaxrxt)
3487                                         inp->sctp_ep.max_send_times = sasoc->sasoc_asocmaxrxt;
3488                                 sasoc->sasoc_number_peer_destinations = 0;
3489                                 sasoc->sasoc_peer_rwnd = 0;
3490                                 sasoc->sasoc_local_rwnd = 0;
3491                                 if (sasoc->sasoc_cookie_life) {
3492                                         inp->sctp_ep.def_cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life);
3493                                 }
3494                                 SCTP_INP_WUNLOCK(inp);
3495                         }
3496                 }
3497                 break;
3498         case SCTP_INITMSG:
3499                 {
3500                         struct sctp_initmsg *sinit;
3501
3502                         SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, optsize);
3503                         SCTP_INP_WLOCK(inp);
3504                         if (sinit->sinit_num_ostreams)
3505                                 inp->sctp_ep.pre_open_stream_count = sinit->sinit_num_ostreams;
3506
3507                         if (sinit->sinit_max_instreams)
3508                                 inp->sctp_ep.max_open_streams_intome = sinit->sinit_max_instreams;
3509
3510                         if (sinit->sinit_max_attempts)
3511                                 inp->sctp_ep.max_init_times = sinit->sinit_max_attempts;
3512
3513                         if (sinit->sinit_max_init_timeo)
3514                                 inp->sctp_ep.initial_init_rto_max = sinit->sinit_max_init_timeo;
3515                         SCTP_INP_WUNLOCK(inp);
3516                 }
3517                 break;
3518         case SCTP_PRIMARY_ADDR:
3519                 {
3520                         struct sctp_setprim *spa;
3521                         struct sctp_nets *net, *lnet;
3522
3523                         SCTP_CHECK_AND_CAST(spa, optval, struct sctp_setprim, optsize);
3524                         SCTP_FIND_STCB(inp, stcb, spa->ssp_assoc_id);
3525
3526                         net = NULL;
3527                         if (stcb) {
3528                                 net = sctp_findnet(stcb, (struct sockaddr *)&spa->ssp_addr);
3529                         } else {
3530                                 /*
3531                                  * We increment here since
3532                                  * sctp_findassociation_ep_addr() wil do a
3533                                  * decrement if it finds the stcb as long as
3534                                  * the locked tcb (last argument) is NOT a
3535                                  * TCB.. aka NULL.
3536                                  */
3537                                 SCTP_INP_INCR_REF(inp);
3538                                 stcb = sctp_findassociation_ep_addr(&inp,
3539                                     (struct sockaddr *)&spa->ssp_addr,
3540                                     &net, NULL, NULL);
3541                                 if (stcb == NULL) {
3542                                         SCTP_INP_DECR_REF(inp);
3543                                 }
3544                         }
3545
3546                         if ((stcb) && (net)) {
3547                                 if ((net != stcb->asoc.primary_destination) &&
3548                                     (!(net->dest_state & SCTP_ADDR_UNCONFIRMED))) {
3549                                         /* Ok we need to set it */
3550                                         lnet = stcb->asoc.primary_destination;
3551                                         if (sctp_set_primary_addr(stcb, (struct sockaddr *)NULL, net) == 0) {
3552                                                 if (net->dest_state & SCTP_ADDR_SWITCH_PRIMARY) {
3553                                                         net->dest_state |= SCTP_ADDR_DOUBLE_SWITCH;
3554                                                 }
3555                                                 net->dest_state |= SCTP_ADDR_SWITCH_PRIMARY;
3556                                         }
3557                                 }
3558                         } else {
3559                                 error = EINVAL;
3560                         }
3561                         if (stcb) {
3562                                 SCTP_TCB_UNLOCK(stcb);
3563                         }
3564                 }
3565                 break;
3566         case SCTP_SET_DYNAMIC_PRIMARY:
3567                 {
3568                         union sctp_sockstore *ss;
3569
3570                         error = priv_check(curthread,
3571                             PRIV_NETINET_RESERVEDPORT);
3572                         if (error)
3573                                 break;
3574
3575                         SCTP_CHECK_AND_CAST(ss, optval, union sctp_sockstore, optsize);
3576                         /* SUPER USER CHECK? */
3577                         error = sctp_dynamic_set_primary(&ss->sa, vrf_id);
3578                 }
3579                 break;
3580         case SCTP_SET_PEER_PRIMARY_ADDR:
3581                 {
3582                         struct sctp_setpeerprim *sspp;
3583
3584                         SCTP_CHECK_AND_CAST(sspp, optval, struct sctp_setpeerprim, optsize);
3585                         SCTP_FIND_STCB(inp, stcb, sspp->sspp_assoc_id);
3586                         if (stcb != NULL) {
3587                                 struct sctp_ifa *ifa;
3588
3589                                 ifa = sctp_find_ifa_by_addr((struct sockaddr *)&sspp->sspp_addr,
3590                                     stcb->asoc.vrf_id, 0);
3591                                 if (ifa == NULL) {
3592                                         error = EINVAL;
3593                                         goto out_of_it;
3594                                 }
3595                                 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
3596                                         /*
3597                                          * Must validate the ifa found is in
3598                                          * our ep
3599                                          */
3600                                         struct sctp_laddr *laddr;
3601                                         int found = 0;
3602
3603                                         LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
3604                                                 if (laddr->ifa == NULL) {
3605                                                         SCTPDBG(SCTP_DEBUG_OUTPUT1, "%s: NULL ifa\n",
3606                                                             __FUNCTION__);
3607                                                         continue;
3608                                                 }
3609                                                 if (laddr->ifa == ifa) {
3610                                                         found = 1;
3611                                                         break;
3612                                                 }
3613                                         }
3614                                         if (!found) {
3615                                                 error = EINVAL;
3616                                                 goto out_of_it;
3617                                         }
3618                                 }
3619                                 if (sctp_set_primary_ip_address_sa(stcb,
3620                                     (struct sockaddr *)&sspp->sspp_addr) != 0) {
3621                                         error = EINVAL;
3622                                 }
3623                 out_of_it:
3624                                 SCTP_TCB_UNLOCK(stcb);
3625                         } else {
3626                                 error = EINVAL;
3627                         }
3628
3629                 }
3630                 break;
3631         case SCTP_BINDX_ADD_ADDR:
3632                 {
3633                         struct sctp_getaddresses *addrs;
3634                         int sz;
3635                         struct thread *td;
3636                         int prison = 0;
3637
3638                         td = (struct thread *)p;
3639                         if (jailed(td->td_ucred)) {
3640                                 prison = 1;
3641                         }
3642                         SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses,
3643                             optsize);
3644                         if (addrs->addr->sa_family == AF_INET) {
3645                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in);
3646                                 if (optsize < sz) {
3647                                         error = EINVAL;
3648                                         break;
3649                                 }
3650                                 if (prison && prison_ip(td->td_ucred, 0, &(((struct sockaddr_in *)(addrs->addr))->sin_addr.s_addr))) {
3651                                         error = EADDRNOTAVAIL;
3652                                 }
3653                         } else if (addrs->addr->sa_family == AF_INET6) {
3654                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in6);
3655                                 if (optsize < sz) {
3656                                         error = EINVAL;
3657                                         break;
3658                                 }
3659                                 /* JAIL XXXX Add else here for V6 */
3660                         }
3661                         sctp_bindx_add_address(so, inp, addrs->addr,
3662                             addrs->sget_assoc_id, vrf_id,
3663                             &error, p);
3664                 }
3665                 break;
3666         case SCTP_BINDX_REM_ADDR:
3667                 {
3668                         struct sctp_getaddresses *addrs;
3669                         int sz;
3670                         struct thread *td;
3671                         int prison = 0;
3672
3673                         td = (struct thread *)p;
3674                         if (jailed(td->td_ucred)) {
3675                                 prison = 1;
3676                         }
3677                         SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses, optsize);
3678                         if (addrs->addr->sa_family == AF_INET) {
3679                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in);
3680                                 if (optsize < sz) {
3681                                         error = EINVAL;
3682                                         break;
3683                                 }
3684                                 if (prison && prison_ip(td->td_ucred, 0, &(((struct sockaddr_in *)(addrs->addr))->sin_addr.s_addr))) {
3685                                         error = EADDRNOTAVAIL;
3686                                 }
3687                         } else if (addrs->addr->sa_family == AF_INET6) {
3688                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in6);
3689                                 if (optsize < sz) {
3690                                         error = EINVAL;
3691                                         break;
3692                                 }
3693                                 /* JAIL XXXX Add else here for V6 */
3694                         }
3695                         sctp_bindx_delete_address(so, inp, addrs->addr,
3696                             addrs->sget_assoc_id, vrf_id,
3697                             &error);
3698                 }
3699                 break;
3700         default:
3701                 error = ENOPROTOOPT;
3702                 break;
3703         }                       /* end switch (opt) */
3704         return (error);
3705 }
3706
3707
3708 int
3709 sctp_ctloutput(struct socket *so, struct sockopt *sopt)
3710 {
3711         void *optval = NULL;
3712         size_t optsize = 0;
3713         struct sctp_inpcb *inp;
3714         void *p;
3715         int error = 0;
3716
3717         inp = (struct sctp_inpcb *)so->so_pcb;
3718         if (inp == 0) {
3719                 /* I made the same as TCP since we are not setup? */
3720                 return (ECONNRESET);
3721         }
3722         if (sopt->sopt_level != IPPROTO_SCTP) {
3723                 /* wrong proto level... send back up to IP */
3724 #ifdef INET6
3725                 if (INP_CHECK_SOCKAF(so, AF_INET6))
3726                         error = ip6_ctloutput(so, sopt);
3727                 else
3728 #endif                          /* INET6 */
3729                         error = ip_ctloutput(so, sopt);
3730                 return (error);
3731         }
3732         optsize = sopt->sopt_valsize;
3733         if (optsize) {
3734                 SCTP_MALLOC(optval, void *, optsize, SCTP_M_SOCKOPT);
3735                 if (optval == NULL) {
3736                         return (ENOBUFS);
3737                 }
3738                 error = sooptcopyin(sopt, optval, optsize, optsize);
3739                 if (error) {
3740                         SCTP_FREE(optval, SCTP_M_SOCKOPT);
3741                         goto out;
3742                 }
3743         }
3744         p = (void *)sopt->sopt_td;
3745         if (sopt->sopt_dir == SOPT_SET) {
3746                 error = sctp_setopt(so, sopt->sopt_name, optval, optsize, p);
3747         } else if (sopt->sopt_dir == SOPT_GET) {
3748                 error = sctp_getopt(so, sopt->sopt_name, optval, &optsize, p);
3749         } else {
3750                 error = EINVAL;
3751         }
3752         if ((error == 0) && (optval != NULL)) {
3753                 error = sooptcopyout(sopt, optval, optsize);
3754                 SCTP_FREE(optval, SCTP_M_SOCKOPT);
3755         } else if (optval != NULL) {
3756                 SCTP_FREE(optval, SCTP_M_SOCKOPT);
3757         }
3758 out:
3759         return (error);
3760 }
3761
3762
3763 static int
3764 sctp_connect(struct socket *so, struct sockaddr *addr, struct thread *p)
3765 {
3766         int error = 0;
3767         int create_lock_on = 0;
3768         uint32_t vrf_id;
3769         struct sctp_inpcb *inp;
3770         struct sctp_tcb *stcb = NULL;
3771
3772         inp = (struct sctp_inpcb *)so->so_pcb;
3773         if (inp == 0) {
3774                 /* I made the same as TCP since we are not setup? */
3775                 return (ECONNRESET);
3776         }
3777         if (addr == NULL)
3778                 return EINVAL;
3779
3780         if ((addr->sa_family == AF_INET6) && (addr->sa_len != sizeof(struct sockaddr_in6))) {
3781                 return (EINVAL);
3782         }
3783         if ((addr->sa_family == AF_INET) && (addr->sa_len != sizeof(struct sockaddr_in))) {
3784                 return (EINVAL);
3785         }
3786         SCTP_ASOC_CREATE_LOCK(inp);
3787         create_lock_on = 1;
3788
3789         SCTP_INP_INCR_REF(inp);
3790         if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3791             (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
3792                 /* Should I really unlock ? */
3793                 error = EFAULT;
3794                 goto out_now;
3795         }
3796 #ifdef INET6
3797         if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) &&
3798             (addr->sa_family == AF_INET6)) {
3799                 error = EINVAL;
3800                 goto out_now;
3801         }
3802 #endif                          /* INET6 */
3803         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
3804             SCTP_PCB_FLAGS_UNBOUND) {
3805                 /* Bind a ephemeral port */
3806                 error = sctp_inpcb_bind(so, NULL, p);
3807                 if (error) {
3808                         goto out_now;
3809                 }
3810         }
3811         /* Now do we connect? */
3812         if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
3813                 error = EINVAL;
3814                 goto out_now;
3815         }
3816         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
3817             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
3818                 /* We are already connected AND the TCP model */
3819                 error = EADDRINUSE;
3820                 goto out_now;
3821         }
3822         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
3823                 SCTP_INP_RLOCK(inp);
3824                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
3825                 SCTP_INP_RUNLOCK(inp);
3826         } else {
3827                 /*
3828                  * We increment here since sctp_findassociation_ep_addr()
3829                  * wil do a decrement if it finds the stcb as long as the
3830                  * locked tcb (last argument) is NOT a TCB.. aka NULL.
3831                  */
3832                 SCTP_INP_INCR_REF(inp);
3833                 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL);
3834                 if (stcb == NULL) {
3835                         SCTP_INP_DECR_REF(inp);
3836                 } else {
3837                         SCTP_TCB_LOCK(stcb);
3838                 }
3839         }
3840         if (stcb != NULL) {
3841                 /* Already have or am bring up an association */
3842                 error = EALREADY;
3843                 goto out_now;
3844         }
3845         vrf_id = inp->def_vrf_id;
3846         /* We are GOOD to go */
3847         stcb = sctp_aloc_assoc(inp, addr, 1, &error, 0, vrf_id);
3848         if (stcb == NULL) {
3849                 /* Gak! no memory */
3850                 goto out_now;
3851         }
3852         if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
3853                 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
3854                 /* Set the connected flag so we can queue data */
3855                 soisconnecting(so);
3856         }
3857         stcb->asoc.state = SCTP_STATE_COOKIE_WAIT;
3858         (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
3859
3860         /* initialize authentication parameters for the assoc */
3861         sctp_initialize_auth_params(inp, stcb);
3862
3863         sctp_send_initiate(inp, stcb);
3864         SCTP_TCB_UNLOCK(stcb);
3865 out_now:
3866         if (create_lock_on) {
3867                 SCTP_ASOC_CREATE_UNLOCK(inp);
3868         }
3869         SCTP_INP_DECR_REF(inp);
3870         return error;
3871 }
3872
3873 int
3874 sctp_listen(struct socket *so, int backlog, struct thread *p)
3875 {
3876         /*
3877          * Note this module depends on the protocol processing being called
3878          * AFTER any socket level flags and backlog are applied to the
3879          * socket. The traditional way that the socket flags are applied is
3880          * AFTER protocol processing. We have made a change to the
3881          * sys/kern/uipc_socket.c module to reverse this but this MUST be in
3882          * place if the socket API for SCTP is to work properly.
3883          */
3884
3885         int error = 0;
3886         struct sctp_inpcb *inp;
3887
3888         inp = (struct sctp_inpcb *)so->so_pcb;
3889         if (inp == 0) {
3890                 /* I made the same as TCP since we are not setup? */
3891                 return (ECONNRESET);
3892         }
3893         SCTP_INP_RLOCK(inp);
3894 #ifdef SCTP_LOCK_LOGGING
3895         if (sctp_logging_level & SCTP_LOCK_LOGGING_ENABLE) {
3896                 sctp_log_lock(inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_SOCK);
3897         }
3898 #endif
3899         SOCK_LOCK(so);
3900         error = solisten_proto_check(so);
3901         if (error) {
3902                 SOCK_UNLOCK(so);
3903                 SCTP_INP_RUNLOCK(inp);
3904                 return (error);
3905         }
3906         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
3907             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
3908                 /* We are already connected AND the TCP model */
3909                 SCTP_INP_RUNLOCK(inp);
3910                 SOCK_UNLOCK(so);
3911                 return (EADDRINUSE);
3912         }
3913         if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
3914                 /* We must do a bind. */
3915                 SOCK_UNLOCK(so);
3916                 SCTP_INP_RUNLOCK(inp);
3917                 if ((error = sctp_inpcb_bind(so, NULL, p))) {
3918                         /* bind error, probably perm */
3919                         return (error);
3920                 }
3921                 SOCK_LOCK(so);
3922         } else {
3923                 SCTP_INP_RUNLOCK(inp);
3924         }
3925         /* It appears for 7.0 and on, we must always call this. */
3926         solisten_proto(so, backlog);
3927         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
3928                 /* remove the ACCEPTCONN flag for one-to-many sockets */
3929                 so->so_options &= ~SO_ACCEPTCONN;
3930         }
3931         if (backlog == 0) {
3932                 /* turning off listen */
3933                 so->so_options &= ~SO_ACCEPTCONN;
3934         }
3935         SOCK_UNLOCK(so);
3936         return (error);
3937 }
3938
3939 static int sctp_defered_wakeup_cnt = 0;
3940
3941 int
3942 sctp_accept(struct socket *so, struct sockaddr **addr)
3943 {
3944         struct sctp_tcb *stcb;
3945         struct sctp_inpcb *inp;
3946         union sctp_sockstore store;
3947
3948         int error;
3949
3950         inp = (struct sctp_inpcb *)so->so_pcb;
3951
3952         if (inp == 0) {
3953                 return (ECONNRESET);
3954         }
3955         SCTP_INP_RLOCK(inp);
3956         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
3957                 SCTP_INP_RUNLOCK(inp);
3958                 return (ENOTSUP);
3959         }
3960         if (so->so_state & SS_ISDISCONNECTED) {
3961                 SCTP_INP_RUNLOCK(inp);
3962                 return (ECONNABORTED);
3963         }
3964         stcb = LIST_FIRST(&inp->sctp_asoc_list);
3965         if (stcb == NULL) {
3966                 SCTP_INP_RUNLOCK(inp);
3967                 return (ECONNRESET);
3968         }
3969         SCTP_TCB_LOCK(stcb);
3970         SCTP_INP_RUNLOCK(inp);
3971         store = stcb->asoc.primary_destination->ro._l_addr;
3972         SCTP_TCB_UNLOCK(stcb);
3973         if (store.sa.sa_family == AF_INET) {
3974                 struct sockaddr_in *sin;
3975
3976                 SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
3977                 sin->sin_family = AF_INET;
3978                 sin->sin_len = sizeof(*sin);
3979                 sin->sin_port = ((struct sockaddr_in *)&store)->sin_port;
3980                 sin->sin_addr = ((struct sockaddr_in *)&store)->sin_addr;
3981                 *addr = (struct sockaddr *)sin;
3982         } else {
3983                 struct sockaddr_in6 *sin6;
3984
3985                 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
3986                 sin6->sin6_family = AF_INET6;
3987                 sin6->sin6_len = sizeof(*sin6);
3988                 sin6->sin6_port = ((struct sockaddr_in6 *)&store)->sin6_port;
3989
3990                 sin6->sin6_addr = ((struct sockaddr_in6 *)&store)->sin6_addr;
3991                 if ((error = sa6_recoverscope(sin6)) != 0) {
3992                         SCTP_FREE_SONAME(sin6);
3993                         return (error);
3994                 }
3995                 *addr = (struct sockaddr *)sin6;
3996         }
3997         /* Wake any delayed sleep action */
3998         if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) {
3999                 SCTP_INP_WLOCK(inp);
4000                 inp->sctp_flags &= ~SCTP_PCB_FLAGS_DONT_WAKE;
4001                 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT) {
4002                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
4003                         SCTP_INP_WUNLOCK(inp);
4004                         SOCKBUF_LOCK(&inp->sctp_socket->so_snd);
4005                         if (sowriteable(inp->sctp_socket)) {
4006                                 sowwakeup_locked(inp->sctp_socket);
4007                         } else {
4008                                 SOCKBUF_UNLOCK(&inp->sctp_socket->so_snd);
4009                         }
4010                         SCTP_INP_WLOCK(inp);
4011                 }
4012                 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT) {
4013                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
4014                         SCTP_INP_WUNLOCK(inp);
4015                         SOCKBUF_LOCK(&inp->sctp_socket->so_rcv);
4016                         if (soreadable(inp->sctp_socket)) {
4017                                 sctp_defered_wakeup_cnt++;
4018                                 sorwakeup_locked(inp->sctp_socket);
4019                         } else {
4020                                 SOCKBUF_UNLOCK(&inp->sctp_socket->so_rcv);
4021                         }
4022                         SCTP_INP_WLOCK(inp);
4023                 }
4024                 SCTP_INP_WUNLOCK(inp);
4025         }
4026         return (0);
4027 }
4028
4029 int
4030 sctp_ingetaddr(struct socket *so, struct sockaddr **addr)
4031 {
4032         struct sockaddr_in *sin;
4033         uint32_t vrf_id;
4034         struct sctp_inpcb *inp;
4035         struct sctp_ifa *sctp_ifa;
4036
4037         /*
4038          * Do the malloc first in case it blocks.
4039          */
4040         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
4041         sin->sin_family = AF_INET;
4042         sin->sin_len = sizeof(*sin);
4043         inp = (struct sctp_inpcb *)so->so_pcb;
4044         if (!inp) {
4045                 SCTP_FREE_SONAME(sin);
4046                 return ECONNRESET;
4047         }
4048         SCTP_INP_RLOCK(inp);
4049         sin->sin_port = inp->sctp_lport;
4050         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
4051                 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4052                         struct sctp_tcb *stcb;
4053                         struct sockaddr_in *sin_a;
4054                         struct sctp_nets *net;
4055                         int fnd;
4056
4057                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
4058                         if (stcb == NULL) {
4059                                 goto notConn;
4060                         }
4061                         fnd = 0;
4062                         sin_a = NULL;
4063                         SCTP_TCB_LOCK(stcb);
4064                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
4065                                 sin_a = (struct sockaddr_in *)&net->ro._l_addr;
4066                                 if (sin_a == NULL)
4067                                         /* this will make coverity happy */
4068                                         continue;
4069
4070                                 if (sin_a->sin_family == AF_INET) {
4071                                         fnd = 1;
4072                                         break;
4073                                 }
4074                         }
4075                         if ((!fnd) || (sin_a == NULL)) {
4076                                 /* punt */
4077                                 SCTP_TCB_UNLOCK(stcb);
4078                                 goto notConn;
4079                         }
4080                         vrf_id = inp->def_vrf_id;
4081                         sctp_ifa = sctp_source_address_selection(inp,
4082                             stcb,
4083                             (sctp_route_t *) & net->ro,
4084                             net, 0, vrf_id);
4085                         if (sctp_ifa) {
4086                                 sin->sin_addr = sctp_ifa->address.sin.sin_addr;
4087                                 sctp_free_ifa(sctp_ifa);
4088                         }
4089                         SCTP_TCB_UNLOCK(stcb);
4090                 } else {
4091                         /* For the bound all case you get back 0 */
4092         notConn:
4093                         sin->sin_addr.s_addr = 0;
4094                 }
4095
4096         } else {
4097                 /* Take the first IPv4 address in the list */
4098                 struct sctp_laddr *laddr;
4099                 int fnd = 0;
4100
4101                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4102                         if (laddr->ifa->address.sa.sa_family == AF_INET) {
4103                                 struct sockaddr_in *sin_a;
4104
4105                                 sin_a = (struct sockaddr_in *)&laddr->ifa->address.sa;
4106                                 sin->sin_addr = sin_a->sin_addr;
4107                                 fnd = 1;
4108                                 break;
4109                         }
4110                 }
4111                 if (!fnd) {
4112                         SCTP_FREE_SONAME(sin);
4113                         SCTP_INP_RUNLOCK(inp);
4114                         return ENOENT;
4115                 }
4116         }
4117         SCTP_INP_RUNLOCK(inp);
4118         (*addr) = (struct sockaddr *)sin;
4119         return (0);
4120 }
4121
4122 int
4123 sctp_peeraddr(struct socket *so, struct sockaddr **addr)
4124 {
4125         struct sockaddr_in *sin = (struct sockaddr_in *)*addr;
4126         int fnd;
4127         struct sockaddr_in *sin_a;
4128         struct sctp_inpcb *inp;
4129         struct sctp_tcb *stcb;
4130         struct sctp_nets *net;
4131
4132         /* Do the malloc first in case it blocks. */
4133         inp = (struct sctp_inpcb *)so->so_pcb;
4134         if ((inp == NULL) ||
4135             ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) {
4136                 /* UDP type and listeners will drop out here */
4137                 return (ENOTCONN);
4138         }
4139         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
4140         sin->sin_family = AF_INET;
4141         sin->sin_len = sizeof(*sin);
4142
4143         /* We must recapture incase we blocked */
4144         inp = (struct sctp_inpcb *)so->so_pcb;
4145         if (!inp) {
4146                 SCTP_FREE_SONAME(sin);
4147                 return ECONNRESET;
4148         }
4149         SCTP_INP_RLOCK(inp);
4150         stcb = LIST_FIRST(&inp->sctp_asoc_list);
4151         if (stcb) {
4152                 SCTP_TCB_LOCK(stcb);
4153         }
4154         SCTP_INP_RUNLOCK(inp);
4155         if (stcb == NULL) {
4156                 SCTP_FREE_SONAME(sin);
4157                 return ECONNRESET;
4158         }
4159         fnd = 0;
4160         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
4161                 sin_a = (struct sockaddr_in *)&net->ro._l_addr;
4162                 if (sin_a->sin_family == AF_INET) {
4163                         fnd = 1;
4164                         sin->sin_port = stcb->rport;
4165                         sin->sin_addr = sin_a->sin_addr;
4166                         break;
4167                 }
4168         }
4169         SCTP_TCB_UNLOCK(stcb);
4170         if (!fnd) {
4171                 /* No IPv4 address */
4172                 SCTP_FREE_SONAME(sin);
4173                 return ENOENT;
4174         }
4175         (*addr) = (struct sockaddr *)sin;
4176         return (0);
4177 }
4178
4179 struct pr_usrreqs sctp_usrreqs = {
4180         .pru_abort = sctp_abort,
4181         .pru_accept = sctp_accept,
4182         .pru_attach = sctp_attach,
4183         .pru_bind = sctp_bind,
4184         .pru_connect = sctp_connect,
4185         .pru_control = in_control,
4186         .pru_close = sctp_close,
4187         .pru_detach = sctp_close,
4188         .pru_sopoll = sopoll_generic,
4189         .pru_disconnect = sctp_disconnect,
4190         .pru_listen = sctp_listen,
4191         .pru_peeraddr = sctp_peeraddr,
4192         .pru_send = sctp_sendm,
4193         .pru_shutdown = sctp_shutdown,
4194         .pru_sockaddr = sctp_ingetaddr,
4195         .pru_sosend = sctp_sosend,
4196         .pru_soreceive = sctp_soreceive
4197 };