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(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_nextmtu);
 191         if (nxtsz == 0) {
 192                 /*
 193                  * old type router that does not tell us what the next size
 194                  * mtu is. Rats we will have to guess (in a educated fashion
 195                  * of course)
 196                  */
 197                 nxtsz = 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     struct ip *ip,
 227     struct sctphdr *sh,
 228     struct sockaddr *to,
 229     struct sctp_tcb *stcb,
 230     struct sctp_nets *net)
 231 {
 232 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
 233         struct socket *so;
 234
 235 #endif
 236         /* protection */
 237         int reason;
 238         struct icmp *icmph;
 239
 240
 241         if ((inp == NULL) || (stcb == NULL) || (net == NULL) ||
 242             (sh == NULL) || (to == NULL)) {
 243                 if (stcb)
 244                         SCTP_TCB_UNLOCK(stcb);
 245                 return;
 246         }
 247         /* First job is to verify the vtag matches what I would send */
 248         if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) {
 249                 SCTP_TCB_UNLOCK(stcb);
 250                 return;
 251         }
 252         icmph = (struct icmp *)((caddr_t)ip - (sizeof(struct icmp) -
 253             sizeof(struct ip)));
 254         if (icmph->icmp_type != ICMP_UNREACH) {
 255                 /* We only care about unreachable */
 256                 SCTP_TCB_UNLOCK(stcb);
 257                 return;
 258         }
 259         if ((icmph->icmp_code == ICMP_UNREACH_NET) ||
 260             (icmph->icmp_code == ICMP_UNREACH_HOST) ||
 261             (icmph->icmp_code == ICMP_UNREACH_NET_UNKNOWN) ||
 262             (icmph->icmp_code == ICMP_UNREACH_HOST_UNKNOWN) ||
 263             (icmph->icmp_code == ICMP_UNREACH_ISOLATED) ||
 264             (icmph->icmp_code == ICMP_UNREACH_NET_PROHIB) ||
 265             (icmph->icmp_code == ICMP_UNREACH_HOST_PROHIB) ||
 266             (icmph->icmp_code == ICMP_UNREACH_FILTER_PROHIB)) {
 267
 268                 /*
 269                  * Hmm reachablity problems we must examine closely. If its
 270                  * not reachable, we may have lost a network. Or if there is
 271                  * NO protocol at the other end named SCTP. well we consider
 272                  * it a OOTB abort.
 273                  */
 274                 if (net->dest_state & SCTP_ADDR_REACHABLE) {
 275                         /* Ok that destination is NOT reachable */
 276                         SCTP_PRINTF("ICMP (thresh %d/%d) takes interface %p down\n",
 277                             net->error_count,
 278                             net->failure_threshold,
 279                             net);
 280
 281                         net->dest_state &= ~SCTP_ADDR_REACHABLE;
 282                         net->dest_state |= SCTP_ADDR_NOT_REACHABLE;
 283                         /*
 284                          * JRS 5/14/07 - If a destination is unreachable,
 285                          * the PF bit is turned off.  This allows an
 286                          * unambiguous use of the PF bit for destinations
 287                          * that are reachable but potentially failed. If the
 288                          * destination is set to the unreachable state, also
 289                          * set the destination to the PF state.
 290                          */
 291                         /*
 292                          * Add debug message here if destination is not in
 293                          * PF state.
 294                          */
 295                         /* Stop any running T3 timers here? */
 296                         if (sctp_cmt_on_off && sctp_cmt_pf) {
 297                                 net->dest_state &= ~SCTP_ADDR_PF;
 298                                 SCTPDBG(SCTP_DEBUG_TIMER4, "Destination %p moved from PF to unreachable.\n",
 299                                     net);
 300                         }
 301                         net->error_count = net->failure_threshold + 1;
 302                         sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN,
 303                             stcb, SCTP_FAILED_THRESHOLD,
 304                             (void *)net, SCTP_SO_NOT_LOCKED);
 305                 }
 306                 SCTP_TCB_UNLOCK(stcb);
 307         } else if ((icmph->icmp_code == ICMP_UNREACH_PROTOCOL) ||
 308             (icmph->icmp_code == ICMP_UNREACH_PORT)) {
 309                 /*
 310                  * Here the peer is either playing tricks on us, including
 311                  * an address that belongs to someone who does not support
 312                  * SCTP OR was a userland implementation that shutdown and
 313                  * now is dead. In either case treat it like a OOTB abort
 314                  * with no TCB
 315                  */
 316                 reason = SCTP_PEER_FAULTY;
 317                 sctp_abort_notification(stcb, reason, SCTP_SO_NOT_LOCKED);
 318 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
 319                 so = SCTP_INP_SO(inp);
 320                 atomic_add_int(&stcb->asoc.refcnt, 1);
 321                 SCTP_TCB_UNLOCK(stcb);
 322                 SCTP_SOCKET_LOCK(so, 1);
 323                 SCTP_TCB_LOCK(stcb);
 324                 atomic_subtract_int(&stcb->asoc.refcnt, 1);
 325 #endif
 326                 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_2);
 327 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
 328                 SCTP_SOCKET_UNLOCK(so, 1);
 329                 /* SCTP_TCB_UNLOCK(stcb); MT: I think this is not needed. */
 330 #endif
 331                 /* no need to unlock here, since the TCB is gone */
 332         } else {
 333                 SCTP_TCB_UNLOCK(stcb);
 334         }
 335 }
 336
 337 void
 338 sctp_ctlinput(cmd, sa, vip)
 339         int cmd;
 340         struct sockaddr *sa;
 341         void *vip;
 342 {
 343         struct ip *ip = vip;
 344         struct sctphdr *sh;
 345         uint32_t vrf_id;
 346
 347         /* FIX, for non-bsd is this right? */
 348         vrf_id = SCTP_DEFAULT_VRFID;
 349         if (sa->sa_family != AF_INET ||
 350             ((struct sockaddr_in *)sa)->sin_addr.s_addr == INADDR_ANY) {
 351                 return;
 352         }
 353         if (PRC_IS_REDIRECT(cmd)) {
 354                 ip = 0;
 355         } else if ((unsigned)cmd >= PRC_NCMDS || inetctlerrmap[cmd] == 0) {
 356                 return;
 357         }
 358         if (ip) {
 359                 struct sctp_inpcb *inp = NULL;
 360                 struct sctp_tcb *stcb = NULL;
 361                 struct sctp_nets *net = NULL;
 362                 struct sockaddr_in to, from;
 363
 364                 sh = (struct sctphdr *)((caddr_t)ip + (ip->ip_hl << 2));
 365                 bzero(&to, sizeof(to));
 366                 bzero(&from, sizeof(from));
 367                 from.sin_family = to.sin_family = AF_INET;
 368                 from.sin_len = to.sin_len = sizeof(to);
 369                 from.sin_port = sh->src_port;
 370                 from.sin_addr = ip->ip_src;
 371                 to.sin_port = sh->dest_port;
 372                 to.sin_addr = ip->ip_dst;
 373
 374                 /*
 375                  * 'to' holds the dest of the packet that failed to be sent.
 376                  * 'from' holds our local endpoint address. Thus we reverse
 377                  * the to and the from in the lookup.
 378                  */
 379                 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&from,
 380                     (struct sockaddr *)&to,
 381                     &inp, &net, 1, vrf_id);
 382                 if (stcb != NULL && inp && (inp->sctp_socket != NULL)) {
 383                         if (cmd != PRC_MSGSIZE) {
 384                                 sctp_notify(inp, ip, sh,
 385                                     (struct sockaddr *)&to, stcb,
 386                                     net);
 387                         } else {
 388                                 /* handle possible ICMP size messages */
 389                                 sctp_notify_mbuf(inp, stcb, net, ip, sh);
 390                         }
 391                 } else {
 392                         if ((stcb == NULL) && (inp != NULL)) {
 393                                 /* reduce ref-count */
 394                                 SCTP_INP_WLOCK(inp);
 395                                 SCTP_INP_DECR_REF(inp);
 396                                 SCTP_INP_WUNLOCK(inp);
 397                         }
 398                 }
 399         }
 400         return;
 401 }
 402
 403 static int
 404 sctp_getcred(SYSCTL_HANDLER_ARGS)
 405 {
 406         struct xucred xuc;
 407         struct sockaddr_in addrs[2];
 408         struct sctp_inpcb *inp;
 409         struct sctp_nets *net;
 410         struct sctp_tcb *stcb;
 411         int error;
 412         uint32_t vrf_id;
 413
 414         /* FIX, for non-bsd is this right? */
 415         vrf_id = SCTP_DEFAULT_VRFID;
 416
 417         error = priv_check(req->td, PRIV_NETINET_GETCRED);
 418
 419         if (error)
 420                 return (error);
 421
 422         error = SYSCTL_IN(req, addrs, sizeof(addrs));
 423         if (error)
 424                 return (error);
 425
 426         stcb = sctp_findassociation_addr_sa(sintosa(&addrs[0]),
 427             sintosa(&addrs[1]),
 428             &inp, &net, 1, vrf_id);
 429         if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) {
 430                 if ((inp != NULL) && (stcb == NULL)) {
 431                         /* reduce ref-count */
 432                         SCTP_INP_WLOCK(inp);
 433                         SCTP_INP_DECR_REF(inp);
 434                         goto cred_can_cont;
 435                 }
 436                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
 437                 error = ENOENT;
 438                 goto out;
 439         }
 440         SCTP_TCB_UNLOCK(stcb);
 441         /*
 442          * We use the write lock here, only since in the error leg we need
 443          * it. If we used RLOCK, then we would have to
 444          * wlock/decr/unlock/rlock. Which in theory could create a hole.
 445          * Better to use higher wlock.
 446          */
 447         SCTP_INP_WLOCK(inp);
 448 cred_can_cont:
 449         error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket);
 450         if (error) {
 451                 SCTP_INP_WUNLOCK(inp);
 452                 goto out;
 453         }
 454         cru2x(inp->sctp_socket->so_cred, &xuc);
 455         SCTP_INP_WUNLOCK(inp);
 456         error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred));
 457 out:
 458         return (error);
 459 }
 460
 461 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW,
 462     0, 0, sctp_getcred, "S,ucred", "Get the ucred of a SCTP connection");
 463
 464
 465 static void
 466 sctp_abort(struct socket *so)
 467 {
 468         struct sctp_inpcb *inp;
 469         uint32_t flags;
 470
 471         inp = (struct sctp_inpcb *)so->so_pcb;
 472         if (inp == 0) {
 473                 return;
 474         }
 475 sctp_must_try_again:
 476         flags = inp->sctp_flags;
 477 #ifdef SCTP_LOG_CLOSING
 478         sctp_log_closing(inp, NULL, 17);
 479 #endif
 480         if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
 481             (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
 482 #ifdef SCTP_LOG_CLOSING
 483                 sctp_log_closing(inp, NULL, 16);
 484 #endif
 485                 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
 486                     SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
 487                 SOCK_LOCK(so);
 488                 SCTP_SB_CLEAR(so->so_snd);
 489                 /*
 490                  * same for the rcv ones, they are only here for the
 491                  * accounting/select.
 492                  */
 493                 SCTP_SB_CLEAR(so->so_rcv);
 494
 495                 /* Now null out the reference, we are completely detached. */
 496                 so->so_pcb = NULL;
 497                 SOCK_UNLOCK(so);
 498         } else {
 499                 flags = inp->sctp_flags;
 500                 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
 501                         goto sctp_must_try_again;
 502                 }
 503         }
 504         return;
 505 }
 506
 507 static int
 508 sctp_attach(struct socket *so, int proto, struct thread *p)
 509 {
 510         struct sctp_inpcb *inp;
 511         struct inpcb *ip_inp;
 512         int error;
 513         uint32_t vrf_id = SCTP_DEFAULT_VRFID;
 514
 515 #ifdef IPSEC
 516         uint32_t flags;
 517
 518 #endif
 519         inp = (struct sctp_inpcb *)so->so_pcb;
 520         if (inp != 0) {
 521                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 522                 return EINVAL;
 523         }
 524         error = SCTP_SORESERVE(so, sctp_sendspace, sctp_recvspace);
 525         if (error) {
 526                 return error;
 527         }
 528         error = sctp_inpcb_alloc(so, vrf_id);
 529         if (error) {
 530                 return error;
 531         }
 532         inp = (struct sctp_inpcb *)so->so_pcb;
 533         SCTP_INP_WLOCK(inp);
 534         inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUND_V6;    /* I'm not v6! */
 535         ip_inp = &inp->ip_inp.inp;
 536         ip_inp->inp_vflag |= INP_IPV4;
 537         ip_inp->inp_ip_ttl = ip_defttl;
 538 #ifdef IPSEC
 539         error = ipsec_init_policy(so, &ip_inp->inp_sp);
 540 #ifdef SCTP_LOG_CLOSING
 541         sctp_log_closing(inp, NULL, 17);
 542 #endif
 543         if (error != 0) {
 544                 flags = inp->sctp_flags;
 545                 if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
 546                     (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
 547 #ifdef SCTP_LOG_CLOSING
 548                         sctp_log_closing(inp, NULL, 15);
 549 #endif
 550                         SCTP_INP_WUNLOCK(inp);
 551                         sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
 552                             SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
 553                 } else {
 554                         SCTP_INP_WUNLOCK(inp);
 555                 }
 556                 return error;
 557         }
 558 #endif                          /* IPSEC */
 559         SCTP_INP_WUNLOCK(inp);
 560         return 0;
 561 }
 562
 563 static int
 564 sctp_bind(struct socket *so, struct sockaddr *addr, struct thread *p)
 565 {
 566         struct sctp_inpcb *inp = NULL;
 567         int error;
 568
 569 #ifdef INET6
 570         if (addr && addr->sa_family != AF_INET) {
 571                 /* must be a v4 address! */
 572                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 573                 return EINVAL;
 574         }
 575 #endif                          /* INET6 */
 576         if (addr && (addr->sa_len != sizeof(struct sockaddr_in))) {
 577                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 578                 return EINVAL;
 579         }
 580         inp = (struct sctp_inpcb *)so->so_pcb;
 581         if (inp == 0) {
 582                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 583                 return EINVAL;
 584         }
 585         error = sctp_inpcb_bind(so, addr, NULL, p);
 586         return error;
 587 }
 588
 589 void
 590 sctp_close(struct socket *so)
 591 {
 592         struct sctp_inpcb *inp;
 593         uint32_t flags;
 594
 595         inp = (struct sctp_inpcb *)so->so_pcb;
 596         if (inp == 0)
 597                 return;
 598
 599         /*
 600          * Inform all the lower layer assoc that we are done.
 601          */
 602 sctp_must_try_again:
 603         flags = inp->sctp_flags;
 604 #ifdef SCTP_LOG_CLOSING
 605         sctp_log_closing(inp, NULL, 17);
 606 #endif
 607         if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
 608             (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
 609                 if (((so->so_options & SO_LINGER) && (so->so_linger == 0)) ||
 610                     (so->so_rcv.sb_cc > 0)) {
 611 #ifdef SCTP_LOG_CLOSING
 612                         sctp_log_closing(inp, NULL, 13);
 613 #endif
 614                         sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
 615                             SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
 616                 } else {
 617 #ifdef SCTP_LOG_CLOSING
 618                         sctp_log_closing(inp, NULL, 14);
 619 #endif
 620                         sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
 621                             SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
 622                 }
 623                 /*
 624                  * The socket is now detached, no matter what the state of
 625                  * the SCTP association.
 626                  */
 627                 SOCK_LOCK(so);
 628                 SCTP_SB_CLEAR(so->so_snd);
 629                 /*
 630                  * same for the rcv ones, they are only here for the
 631                  * accounting/select.
 632                  */
 633                 SCTP_SB_CLEAR(so->so_rcv);
 634
 635                 /* Now null out the reference, we are completely detached. */
 636                 so->so_pcb = NULL;
 637                 SOCK_UNLOCK(so);
 638         } else {
 639                 flags = inp->sctp_flags;
 640                 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
 641                         goto sctp_must_try_again;
 642                 }
 643         }
 644         return;
 645 }
 646
 647
 648 int
 649 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
 650     struct mbuf *control, struct thread *p);
 651
 652
 653 int
 654 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
 655     struct mbuf *control, struct thread *p)
 656 {
 657         struct sctp_inpcb *inp;
 658         int error;
 659
 660         inp = (struct sctp_inpcb *)so->so_pcb;
 661         if (inp == 0) {
 662                 if (control) {
 663                         sctp_m_freem(control);
 664                         control = NULL;
 665                 }
 666                 SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 667                 sctp_m_freem(m);
 668                 return EINVAL;
 669         }
 670         /* Got to have an to address if we are NOT a connected socket */
 671         if ((addr == NULL) &&
 672             ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) ||
 673             (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE))
 674             ) {
 675                 goto connected_type;
 676         } else if (addr == NULL) {
 677                 SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EDESTADDRREQ);
 678                 error = EDESTADDRREQ;
 679                 sctp_m_freem(m);
 680                 if (control) {
 681                         sctp_m_freem(control);
 682                         control = NULL;
 683                 }
 684                 return (error);
 685         }
 686 #ifdef INET6
 687         if (addr->sa_family != AF_INET) {
 688                 /* must be a v4 address! */
 689                 SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EDESTADDRREQ);
 690                 sctp_m_freem(m);
 691                 if (control) {
 692                         sctp_m_freem(control);
 693                         control = NULL;
 694                 }
 695                 error = EDESTADDRREQ;
 696                 return EDESTADDRREQ;
 697         }
 698 #endif                          /* INET6 */
 699 connected_type:
 700         /* now what about control */
 701         if (control) {
 702                 if (inp->control) {
 703                         SCTP_PRINTF("huh? control set?\n");
 704                         sctp_m_freem(inp->control);
 705                         inp->control = NULL;
 706                 }
 707                 inp->control = control;
 708         }
 709         /* Place the data */
 710         if (inp->pkt) {
 711                 SCTP_BUF_NEXT(inp->pkt_last) = m;
 712                 inp->pkt_last = m;
 713         } else {
 714                 inp->pkt_last = inp->pkt = m;
 715         }
 716         if (
 717         /* FreeBSD uses a flag passed */
 718             ((flags & PRUS_MORETOCOME) == 0)
 719             ) {
 720                 /*
 721                  * note with the current version this code will only be used
 722                  * by OpenBSD-- NetBSD, FreeBSD, and MacOS have methods for
 723                  * re-defining sosend to use the sctp_sosend. One can
 724                  * optionally switch back to this code (by changing back the
 725                  * definitions) but this is not advisable. This code is used
 726                  * by FreeBSD when sending a file with sendfile() though.
 727                  */
 728                 int ret;
 729
 730                 ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags);
 731                 inp->pkt = NULL;
 732                 inp->control = NULL;
 733                 return (ret);
 734         } else {
 735                 return (0);
 736         }
 737 }
 738
 739 int
 740 sctp_disconnect(struct socket *so)
 741 {
 742         struct sctp_inpcb *inp;
 743
 744         inp = (struct sctp_inpcb *)so->so_pcb;
 745         if (inp == NULL) {
 746                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
 747                 return (ENOTCONN);
 748         }
 749         SCTP_INP_RLOCK(inp);
 750         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
 751             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
 752                 if (SCTP_LIST_EMPTY(&inp->sctp_asoc_list)) {
 753                         /* No connection */
 754                         SCTP_INP_RUNLOCK(inp);
 755                         return (0);
 756                 } else {
 757                         struct sctp_association *asoc;
 758                         struct sctp_tcb *stcb;
 759
 760                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
 761                         if (stcb == NULL) {
 762                                 SCTP_INP_RUNLOCK(inp);
 763                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 764                                 return (EINVAL);
 765                         }
 766                         SCTP_TCB_LOCK(stcb);
 767                         asoc = &stcb->asoc;
 768                         if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
 769                                 /* We are about to be freed, out of here */
 770                                 SCTP_TCB_UNLOCK(stcb);
 771                                 SCTP_INP_RUNLOCK(inp);
 772                                 return (0);
 773                         }
 774                         if (((so->so_options & SO_LINGER) &&
 775                             (so->so_linger == 0)) ||
 776                             (so->so_rcv.sb_cc > 0)) {
 777                                 if (SCTP_GET_STATE(asoc) !=
 778                                     SCTP_STATE_COOKIE_WAIT) {
 779                                         /* Left with Data unread */
 780                                         struct mbuf *err;
 781
 782                                         err = sctp_get_mbuf_for_msg(sizeof(struct sctp_paramhdr), 0, M_DONTWAIT, 1, MT_DATA);
 783                                         if (err) {
 784                                                 /*
 785                                                  * Fill in the user
 786                                                  * initiated abort
 787                                                  */
 788                                                 struct sctp_paramhdr *ph;
 789
 790                                                 ph = mtod(err, struct sctp_paramhdr *);
 791                                                 SCTP_BUF_LEN(err) = sizeof(struct sctp_paramhdr);
 792                                                 ph->param_type = htons(SCTP_CAUSE_USER_INITIATED_ABT);
 793                                                 ph->param_length = htons(SCTP_BUF_LEN(err));
 794                                         }
 795 #if defined(SCTP_PANIC_ON_ABORT)
 796                                         panic("disconnect does an abort");
 797 #endif
 798                                         sctp_send_abort_tcb(stcb, err, SCTP_SO_LOCKED);
 799                                         SCTP_STAT_INCR_COUNTER32(sctps_aborted);
 800                                 }
 801                                 SCTP_INP_RUNLOCK(inp);
 802                                 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
 803                                     (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 804                                         SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 805                                 }
 806                                 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_3);
 807                                 /* No unlock tcb assoc is gone */
 808                                 return (0);
 809                         }
 810                         if (TAILQ_EMPTY(&asoc->send_queue) &&
 811                             TAILQ_EMPTY(&asoc->sent_queue) &&
 812                             (asoc->stream_queue_cnt == 0)) {
 813                                 /* there is nothing queued to send, so done */
 814                                 if (asoc->locked_on_sending) {
 815                                         goto abort_anyway;
 816                                 }
 817                                 if ((SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
 818                                     (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
 819                                         /* only send SHUTDOWN 1st time thru */
 820                                         sctp_stop_timers_for_shutdown(stcb);
 821                                         sctp_send_shutdown(stcb,
 822                                             stcb->asoc.primary_destination);
 823                                         sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_LOCKED);
 824                                         if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
 825                                             (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 826                                                 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 827                                         }
 828                                         SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT);
 829                                         SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING);
 830                                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN,
 831                                             stcb->sctp_ep, stcb,
 832                                             asoc->primary_destination);
 833                                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD,
 834                                             stcb->sctp_ep, stcb,
 835                                             asoc->primary_destination);
 836                                 }
 837                         } else {
 838                                 /*
 839                                  * we still got (or just got) data to send,
 840                                  * so set SHUTDOWN_PENDING
 841                                  */
 842                                 /*
 843                                  * XXX sockets draft says that SCTP_EOF
 844                                  * should be sent with no data. currently,
 845                                  * we will allow user data to be sent first
 846                                  * and move to SHUTDOWN-PENDING
 847                                  */
 848                                 asoc->state |= SCTP_STATE_SHUTDOWN_PENDING;
 849                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb,
 850                                     asoc->primary_destination);
 851                                 if (asoc->locked_on_sending) {
 852                                         /* Locked to send out the data */
 853                                         struct sctp_stream_queue_pending *sp;
 854
 855                                         sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead);
 856                                         if (sp == NULL) {
 857                                                 SCTP_PRINTF("Error, sp is NULL, locked on sending is non-null strm:%d\n",
 858                                                     asoc->locked_on_sending->stream_no);
 859                                         } else {
 860                                                 if ((sp->length == 0) && (sp->msg_is_complete == 0))
 861                                                         asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT;
 862                                         }
 863                                 }
 864                                 if (TAILQ_EMPTY(&asoc->send_queue) &&
 865                                     TAILQ_EMPTY(&asoc->sent_queue) &&
 866                                     (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
 867                                         struct mbuf *op_err;
 868
 869                         abort_anyway:
 870                                         op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
 871                                             0, M_DONTWAIT, 1, MT_DATA);
 872                                         if (op_err) {
 873                                                 /*
 874                                                  * Fill in the user
 875                                                  * initiated abort
 876                                                  */
 877                                                 struct sctp_paramhdr *ph;
 878                                                 uint32_t *ippp;
 879
 880                                                 SCTP_BUF_LEN(op_err) =
 881                                                     (sizeof(struct sctp_paramhdr) + sizeof(uint32_t));
 882                                                 ph = mtod(op_err,
 883                                                     struct sctp_paramhdr *);
 884                                                 ph->param_type = htons(
 885                                                     SCTP_CAUSE_USER_INITIATED_ABT);
 886                                                 ph->param_length = htons(SCTP_BUF_LEN(op_err));
 887                                                 ippp = (uint32_t *) (ph + 1);
 888                                                 *ippp = htonl(SCTP_FROM_SCTP_USRREQ + SCTP_LOC_4);
 889                                         }
 890 #if defined(SCTP_PANIC_ON_ABORT)
 891                                         panic("disconnect does an abort");
 892 #endif
 893
 894                                         stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_USRREQ + SCTP_LOC_4;
 895                                         sctp_send_abort_tcb(stcb, op_err, SCTP_SO_LOCKED);
 896                                         SCTP_STAT_INCR_COUNTER32(sctps_aborted);
 897                                         if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
 898                                             (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 899                                                 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 900                                         }
 901                                         SCTP_INP_RUNLOCK(inp);
 902                                         (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_5);
 903                                         return (0);
 904                                 } else {
 905                                         sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
 906                                 }
 907                         }
 908                         SCTP_TCB_UNLOCK(stcb);
 909                         SCTP_INP_RUNLOCK(inp);
 910                         return (0);
 911                 }
 912                 /* not reached */
 913         } else {
 914                 /* UDP model does not support this */
 915                 SCTP_INP_RUNLOCK(inp);
 916                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
 917                 return EOPNOTSUPP;
 918         }
 919 }
 920
 921 int
 922 sctp_shutdown(struct socket *so)
 923 {
 924         struct sctp_inpcb *inp;
 925
 926         inp = (struct sctp_inpcb *)so->so_pcb;
 927         if (inp == 0) {
 928                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 929                 return EINVAL;
 930         }
 931         SCTP_INP_RLOCK(inp);
 932         /* For UDP model this is a invalid call */
 933         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
 934                 /* Restore the flags that the soshutdown took away. */
 935                 so->so_rcv.sb_state &= ~SBS_CANTRCVMORE;
 936                 /* This proc will wakeup for read and do nothing (I hope) */
 937                 SCTP_INP_RUNLOCK(inp);
 938                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
 939                 return (EOPNOTSUPP);
 940         }
 941         /*
 942          * Ok if we reach here its the TCP model and it is either a SHUT_WR
 943          * or SHUT_RDWR. This means we put the shutdown flag against it.
 944          */
 945         {
 946                 struct sctp_tcb *stcb;
 947                 struct sctp_association *asoc;
 948
 949                 socantsendmore(so);
 950
 951                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
 952                 if (stcb == NULL) {
 953                         /*
 954                          * Ok we hit the case that the shutdown call was
 955                          * made after an abort or something. Nothing to do
 956                          * now.
 957                          */
 958                         SCTP_INP_RUNLOCK(inp);
 959                         return (0);
 960                 }
 961                 SCTP_TCB_LOCK(stcb);
 962                 asoc = &stcb->asoc;
 963                 if (TAILQ_EMPTY(&asoc->send_queue) &&
 964                     TAILQ_EMPTY(&asoc->sent_queue) &&
 965                     (asoc->stream_queue_cnt == 0)) {
 966                         if (asoc->locked_on_sending) {
 967                                 goto abort_anyway;
 968                         }
 969                         /* there is nothing queued to send, so I'm done... */
 970                         if (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) {
 971                                 /* only send SHUTDOWN the first time through */
 972                                 sctp_stop_timers_for_shutdown(stcb);
 973                                 sctp_send_shutdown(stcb,
 974                                     stcb->asoc.primary_destination);
 975                                 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_LOCKED);
 976                                 if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
 977                                     (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 978                                         SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 979                                 }
 980                                 SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT);
 981                                 SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING);
 982                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN,
 983                                     stcb->sctp_ep, stcb,
 984                                     asoc->primary_destination);
 985                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD,
 986                                     stcb->sctp_ep, stcb,
 987                                     asoc->primary_destination);
 988                         }
 989                 } else {
 990                         /*
 991                          * we still got (or just got) data to send, so set
 992                          * SHUTDOWN_PENDING
 993                          */
 994                         asoc->state |= SCTP_STATE_SHUTDOWN_PENDING;
 995                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb,
 996                             asoc->primary_destination);
 997
 998                         if (asoc->locked_on_sending) {
 999                                 /* Locked to send out the data */
1000                                 struct sctp_stream_queue_pending *sp;
1001
1002                                 sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead);
1003                                 if (sp == NULL) {
1004                                         SCTP_PRINTF("Error, sp is NULL, locked on sending is non-null strm:%d\n",
1005                                             asoc->locked_on_sending->stream_no);
1006                                 } else {
1007                                         if ((sp->length == 0) && (sp->msg_is_complete == 0)) {
1008                                                 asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT;
1009                                         }
1010                                 }
1011                         }
1012                         if (TAILQ_EMPTY(&asoc->send_queue) &&
1013                             TAILQ_EMPTY(&asoc->sent_queue) &&
1014                             (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
1015                                 struct mbuf *op_err;
1016
1017                 abort_anyway:
1018                                 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
1019                                     0, M_DONTWAIT, 1, MT_DATA);
1020                                 if (op_err) {
1021                                         /* Fill in the user initiated abort */
1022                                         struct sctp_paramhdr *ph;
1023                                         uint32_t *ippp;
1024
1025                                         SCTP_BUF_LEN(op_err) =
1026                                             sizeof(struct sctp_paramhdr) + sizeof(uint32_t);
1027                                         ph = mtod(op_err,
1028                                             struct sctp_paramhdr *);
1029                                         ph->param_type = htons(
1030                                             SCTP_CAUSE_USER_INITIATED_ABT);
1031                                         ph->param_length = htons(SCTP_BUF_LEN(op_err));
1032                                         ippp = (uint32_t *) (ph + 1);
1033                                         *ippp = htonl(SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6);
1034                                 }
1035 #if defined(SCTP_PANIC_ON_ABORT)
1036                                 panic("shutdown does an abort");
1037 #endif
1038                                 stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6;
1039                                 sctp_abort_an_association(stcb->sctp_ep, stcb,
1040                                     SCTP_RESPONSE_TO_USER_REQ,
1041                                     op_err, SCTP_SO_LOCKED);
1042                                 goto skip_unlock;
1043                         } else {
1044                                 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
1045                         }
1046                 }
1047                 SCTP_TCB_UNLOCK(stcb);
1048         }
1049 skip_unlock:
1050         SCTP_INP_RUNLOCK(inp);
1051         return 0;
1052 }
1053
1054 /*
1055  * copies a "user" presentable address and removes embedded scope, etc.
1056  * returns 0 on success, 1 on error
1057  */
1058 static uint32_t
1059 sctp_fill_user_address(struct sockaddr_storage *ss, struct sockaddr *sa)
1060 {
1061         struct sockaddr_in6 lsa6;
1062
1063         sa = (struct sockaddr *)sctp_recover_scope((struct sockaddr_in6 *)sa,
1064             &lsa6);
1065         memcpy(ss, sa, sa->sa_len);
1066         return (0);
1067 }
1068
1069
1070
1071 /*
1072  * NOTE: assumes addr lock is held
1073  */
1074 static size_t
1075 sctp_fill_up_addresses_vrf(struct sctp_inpcb *inp,
1076     struct sctp_tcb *stcb,
1077     size_t limit,
1078     struct sockaddr_storage *sas,
1079     uint32_t vrf_id)
1080 {
1081         struct sctp_ifn *sctp_ifn;
1082         struct sctp_ifa *sctp_ifa;
1083         int loopback_scope, ipv4_local_scope, local_scope, site_scope;
1084         size_t actual;
1085         int ipv4_addr_legal, ipv6_addr_legal;
1086         struct sctp_vrf *vrf;
1087
1088         actual = 0;
1089         if (limit <= 0)
1090                 return (actual);
1091
1092         if (stcb) {
1093                 /* Turn on all the appropriate scope */
1094                 loopback_scope = stcb->asoc.loopback_scope;
1095                 ipv4_local_scope = stcb->asoc.ipv4_local_scope;
1096                 local_scope = stcb->asoc.local_scope;
1097                 site_scope = stcb->asoc.site_scope;
1098         } else {
1099                 /* Turn on ALL scope, since we look at the EP */
1100                 loopback_scope = ipv4_local_scope = local_scope =
1101                     site_scope = 1;
1102         }
1103         ipv4_addr_legal = ipv6_addr_legal = 0;
1104         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1105                 ipv6_addr_legal = 1;
1106                 if (SCTP_IPV6_V6ONLY(inp) == 0) {
1107                         ipv4_addr_legal = 1;
1108                 }
1109         } else {
1110                 ipv4_addr_legal = 1;
1111         }
1112         vrf = sctp_find_vrf(vrf_id);
1113         if (vrf == NULL) {
1114                 return (0);
1115         }
1116         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1117                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
1118                         if ((loopback_scope == 0) &&
1119                             SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
1120                                 /* Skip loopback if loopback_scope not set */
1121                                 continue;
1122                         }
1123                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
1124                                 if (stcb) {
1125                                         /*
1126                                          * For the BOUND-ALL case, the list
1127                                          * associated with a TCB is Always
1128                                          * considered a reverse list.. i.e.
1129                                          * it lists addresses that are NOT
1130                                          * part of the association. If this
1131                                          * is one of those we must skip it.
1132                                          */
1133                                         if (sctp_is_addr_restricted(stcb,
1134                                             sctp_ifa)) {
1135                                                 continue;
1136                                         }
1137                                 }
1138                                 if ((sctp_ifa->address.sa.sa_family == AF_INET) &&
1139                                     (ipv4_addr_legal)) {
1140                                         struct sockaddr_in *sin;
1141
1142                                         sin = (struct sockaddr_in *)&sctp_ifa->address.sa;
1143                                         if (sin->sin_addr.s_addr == 0) {
1144                                                 /*
1145                                                  * we skip unspecifed
1146                                                  * addresses
1147                                                  */
1148                                                 continue;
1149                                         }
1150                                         if ((ipv4_local_scope == 0) &&
1151                                             (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
1152                                                 continue;
1153                                         }
1154                                         if (inp->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) {
1155                                                 in6_sin_2_v4mapsin6(sin, (struct sockaddr_in6 *)sas);
1156                                                 ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
1157                                                 sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(struct sockaddr_in6));
1158                                                 actual += sizeof(struct sockaddr_in6);
1159                                         } else {
1160                                                 memcpy(sas, sin, sizeof(*sin));
1161                                                 ((struct sockaddr_in *)sas)->sin_port = inp->sctp_lport;
1162                                                 sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(*sin));
1163                                                 actual += sizeof(*sin);
1164                                         }
1165                                         if (actual >= limit) {
1166                                                 return (actual);
1167                                         }
1168                                 } else if ((sctp_ifa->address.sa.sa_family == AF_INET6) &&
1169                                     (ipv6_addr_legal)) {
1170                                         struct sockaddr_in6 *sin6;
1171
1172                                         sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa;
1173                                         if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1174                                                 /*
1175                                                  * we skip unspecifed
1176                                                  * addresses
1177                                                  */
1178                                                 continue;
1179                                         }
1180                                         if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
1181                                                 if (local_scope == 0)
1182                                                         continue;
1183                                                 if (sin6->sin6_scope_id == 0) {
1184                                                         if (sa6_recoverscope(sin6) != 0)
1185                                                                 /*
1186                                                                  * bad link
1187                                                                  * local
1188                                                                  * address
1189                                                                  */
1190                                                                 continue;
1191                                                 }
1192                                         }
1193                                         if ((site_scope == 0) &&
1194                                             (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
1195                                                 continue;
1196                                         }
1197                                         memcpy(sas, sin6, sizeof(*sin6));
1198                                         ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
1199                                         sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(*sin6));
1200                                         actual += sizeof(*sin6);
1201                                         if (actual >= limit) {
1202                                                 return (actual);
1203                                         }
1204                                 }
1205                         }
1206                 }
1207         } else {
1208                 struct sctp_laddr *laddr;
1209
1210                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1211                         if (stcb) {
1212                                 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
1213                                         continue;
1214                                 }
1215                         }
1216                         if (sctp_fill_user_address(sas, &laddr->ifa->address.sa))
1217                                 continue;
1218
1219                         ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
1220                         sas = (struct sockaddr_storage *)((caddr_t)sas +
1221                             laddr->ifa->address.sa.sa_len);
1222                         actual += laddr->ifa->address.sa.sa_len;
1223                         if (actual >= limit) {
1224                                 return (actual);
1225                         }
1226                 }
1227         }
1228         return (actual);
1229 }
1230
1231 static size_t
1232 sctp_fill_up_addresses(struct sctp_inpcb *inp,
1233     struct sctp_tcb *stcb,
1234     size_t limit,
1235     struct sockaddr_storage *sas)
1236 {
1237         size_t size = 0;
1238
1239         SCTP_IPI_ADDR_RLOCK();
1240         /* fill up addresses for the endpoint's default vrf */
1241         size = sctp_fill_up_addresses_vrf(inp, stcb, limit, sas,
1242             inp->def_vrf_id);
1243         SCTP_IPI_ADDR_RUNLOCK();
1244         return (size);
1245 }
1246
1247 /*
1248  * NOTE: assumes addr lock is held
1249  */
1250 static int
1251 sctp_count_max_addresses_vrf(struct sctp_inpcb *inp, uint32_t vrf_id)
1252 {
1253         int cnt = 0;
1254         struct sctp_vrf *vrf = NULL;
1255
1256         /*
1257          * In both sub-set bound an bound_all cases we return the MAXIMUM
1258          * number of addresses that you COULD get. In reality the sub-set
1259          * bound may have an exclusion list for a given TCB OR in the
1260          * bound-all case a TCB may NOT include the loopback or other
1261          * addresses as well.
1262          */
1263         vrf = sctp_find_vrf(vrf_id);
1264         if (vrf == NULL) {
1265                 return (0);
1266         }
1267         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1268                 struct sctp_ifn *sctp_ifn;
1269                 struct sctp_ifa *sctp_ifa;
1270
1271                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
1272                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
1273                                 /* Count them if they are the right type */
1274                                 if (sctp_ifa->address.sa.sa_family == AF_INET) {
1275                                         if (inp->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)
1276                                                 cnt += sizeof(struct sockaddr_in6);
1277                                         else
1278                                                 cnt += sizeof(struct sockaddr_in);
1279
1280                                 } else if (sctp_ifa->address.sa.sa_family == AF_INET6)
1281                                         cnt += sizeof(struct sockaddr_in6);
1282                         }
1283                 }
1284         } else {
1285                 struct sctp_laddr *laddr;
1286
1287                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1288                         if (laddr->ifa->address.sa.sa_family == AF_INET) {
1289                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)
1290                                         cnt += sizeof(struct sockaddr_in6);
1291                                 else
1292                                         cnt += sizeof(struct sockaddr_in);
1293
1294                         } else if (laddr->ifa->address.sa.sa_family == AF_INET6)
1295                                 cnt += sizeof(struct sockaddr_in6);
1296                 }
1297         }
1298         return (cnt);
1299 }
1300
1301 static int
1302 sctp_count_max_addresses(struct sctp_inpcb *inp)
1303 {
1304         int cnt = 0;
1305
1306         SCTP_IPI_ADDR_RLOCK();
1307         /* count addresses for the endpoint's default VRF */
1308         cnt = sctp_count_max_addresses_vrf(inp, inp->def_vrf_id);
1309         SCTP_IPI_ADDR_RUNLOCK();
1310         return (cnt);
1311 }
1312
1313 static int
1314 sctp_do_connect_x(struct socket *so, struct sctp_inpcb *inp, void *optval,
1315     size_t optsize, void *p, int delay)
1316 {
1317         int error = 0;
1318         int creat_lock_on = 0;
1319         struct sctp_tcb *stcb = NULL;
1320         struct sockaddr *sa;
1321         int num_v6 = 0, num_v4 = 0, *totaddrp, totaddr;
1322         int added = 0;
1323         uint32_t vrf_id;
1324         int bad_addresses = 0;
1325         sctp_assoc_t *a_id;
1326
1327         SCTPDBG(SCTP_DEBUG_PCB1, "Connectx called\n");
1328
1329         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
1330             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
1331                 /* We are already connected AND the TCP model */
1332                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
1333                 return (EADDRINUSE);
1334         }
1335         if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
1336                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1337                 return (EINVAL);
1338         }
1339         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
1340                 SCTP_INP_RLOCK(inp);
1341                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1342                 SCTP_INP_RUNLOCK(inp);
1343         }
1344         if (stcb) {
1345                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
1346                 return (EALREADY);
1347         }
1348         SCTP_INP_INCR_REF(inp);
1349         SCTP_ASOC_CREATE_LOCK(inp);
1350         creat_lock_on = 1;
1351         if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
1352             (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
1353                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EFAULT);
1354                 error = EFAULT;
1355                 goto out_now;
1356         }
1357         totaddrp = (int *)optval;
1358         totaddr = *totaddrp;
1359         sa = (struct sockaddr *)(totaddrp + 1);
1360         stcb = sctp_connectx_helper_find(inp, sa, &totaddr, &num_v4, &num_v6, &error, (optsize - sizeof(int)), &bad_addresses);
1361         if ((stcb != NULL) || bad_addresses) {
1362                 /* Already have or am bring up an association */
1363                 SCTP_ASOC_CREATE_UNLOCK(inp);
1364                 creat_lock_on = 0;
1365                 if (stcb)
1366                         SCTP_TCB_UNLOCK(stcb);
1367                 if (bad_addresses == 0) {
1368                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
1369                         error = EALREADY;
1370                 }
1371                 goto out_now;
1372         }
1373 #ifdef INET6
1374         if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) &&
1375             (num_v6 > 0)) {
1376                 error = EINVAL;
1377                 goto out_now;
1378         }
1379         if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1380             (num_v4 > 0)) {
1381                 struct in6pcb *inp6;
1382
1383                 inp6 = (struct in6pcb *)inp;
1384                 if (SCTP_IPV6_V6ONLY(inp6)) {
1385                         /*
1386                          * if IPV6_V6ONLY flag, ignore connections destined
1387                          * to a v4 addr or v4-mapped addr
1388                          */
1389                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1390                         error = EINVAL;
1391                         goto out_now;
1392                 }
1393         }
1394 #endif                          /* INET6 */
1395         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
1396             SCTP_PCB_FLAGS_UNBOUND) {
1397                 /* Bind a ephemeral port */
1398                 error = sctp_inpcb_bind(so, NULL, NULL, p);
1399                 if (error) {
1400                         goto out_now;
1401                 }
1402         }
1403         /* FIX ME: do we want to pass in a vrf on the connect call? */
1404         vrf_id = inp->def_vrf_id;
1405
1406         /* We are GOOD to go */
1407         stcb = sctp_aloc_assoc(inp, sa, 1, &error, 0, vrf_id,
1408             (struct thread *)p
1409             );
1410         if (stcb == NULL) {
1411                 /* Gak! no memory */
1412                 goto out_now;
1413         }
1414         SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_COOKIE_WAIT);
1415         /* move to second address */
1416         if (sa->sa_family == AF_INET)
1417                 sa = (struct sockaddr *)((caddr_t)sa + sizeof(struct sockaddr_in));
1418         else
1419                 sa = (struct sockaddr *)((caddr_t)sa + sizeof(struct sockaddr_in6));
1420
1421         error = 0;
1422         added = sctp_connectx_helper_add(stcb, sa, (totaddr - 1), &error);
1423         /* Fill in the return id */
1424         if (error) {
1425                 (void)sctp_free_assoc(inp, stcb, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_12);
1426                 goto out_now;
1427         }
1428         a_id = (sctp_assoc_t *) optval;
1429         *a_id = sctp_get_associd(stcb);
1430
1431         /* initialize authentication parameters for the assoc */
1432         sctp_initialize_auth_params(inp, stcb);
1433
1434         if (delay) {
1435                 /* doing delayed connection */
1436                 stcb->asoc.delayed_connection = 1;
1437                 sctp_timer_start(SCTP_TIMER_TYPE_INIT, inp, stcb, stcb->asoc.primary_destination);
1438         } else {
1439                 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
1440                 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
1441         }
1442         SCTP_TCB_UNLOCK(stcb);
1443         if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
1444                 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
1445                 /* Set the connected flag so we can queue data */
1446                 soisconnecting(so);
1447         }
1448 out_now:
1449         if (creat_lock_on) {
1450                 SCTP_ASOC_CREATE_UNLOCK(inp);
1451         }
1452         SCTP_INP_DECR_REF(inp);
1453         return error;
1454 }
1455
1456 #define SCTP_FIND_STCB(inp, stcb, assoc_id) { \
1457         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||\
1458             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { \
1459                 SCTP_INP_RLOCK(inp); \
1460                 stcb = LIST_FIRST(&inp->sctp_asoc_list); \
1461                 if (stcb) { \
1462                         SCTP_TCB_LOCK(stcb); \
1463                 } \
1464                 SCTP_INP_RUNLOCK(inp); \
1465         } else if (assoc_id != 0) { \
1466                 stcb = sctp_findassociation_ep_asocid(inp, assoc_id, 1); \
1467                 if (stcb == NULL) { \
1468                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT); \
1469                         error = ENOENT; \
1470                         break; \
1471                 } \
1472         } else { \
1473                 stcb = NULL; \
1474         } \
1475   }
1476
1477
1478 #define SCTP_CHECK_AND_CAST(destp, srcp, type, size)  {\
1479         if (size < sizeof(type)) { \
1480                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); \
1481                 error = EINVAL; \
1482                 break; \
1483         } else { \
1484                 destp = (type *)srcp; \
1485         } \
1486       }
1487
1488 static int
1489 sctp_getopt(struct socket *so, int optname, void *optval, size_t *optsize,
1490     void *p)
1491 {
1492         struct sctp_inpcb *inp = NULL;
1493         int error, val = 0;
1494         struct sctp_tcb *stcb = NULL;
1495
1496         if (optval == NULL) {
1497                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1498                 return (EINVAL);
1499         }
1500         inp = (struct sctp_inpcb *)so->so_pcb;
1501         if (inp == 0) {
1502                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1503                 return EINVAL;
1504         }
1505         error = 0;
1506
1507         switch (optname) {
1508         case SCTP_NODELAY:
1509         case SCTP_AUTOCLOSE:
1510         case SCTP_EXPLICIT_EOR:
1511         case SCTP_AUTO_ASCONF:
1512         case SCTP_DISABLE_FRAGMENTS:
1513         case SCTP_I_WANT_MAPPED_V4_ADDR:
1514         case SCTP_USE_EXT_RCVINFO:
1515                 SCTP_INP_RLOCK(inp);
1516                 switch (optname) {
1517                 case SCTP_DISABLE_FRAGMENTS:
1518                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NO_FRAGMENT);
1519                         break;
1520                 case SCTP_I_WANT_MAPPED_V4_ADDR:
1521                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4);
1522                         break;
1523                 case SCTP_AUTO_ASCONF:
1524                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1525                                 /* only valid for bound all sockets */
1526                                 val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
1527                         } else {
1528                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1529                                 error = EINVAL;
1530                                 goto flags_out;
1531                         }
1532                         break;
1533                 case SCTP_EXPLICIT_EOR:
1534                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
1535                         break;
1536                 case SCTP_NODELAY:
1537                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NODELAY);
1538                         break;
1539                 case SCTP_USE_EXT_RCVINFO:
1540                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO);
1541                         break;
1542                 case SCTP_AUTOCLOSE:
1543                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTOCLOSE))
1544                                 val = TICKS_TO_SEC(inp->sctp_ep.auto_close_time);
1545                         else
1546                                 val = 0;
1547                         break;
1548
1549                 default:
1550                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
1551                         error = ENOPROTOOPT;
1552                 }               /* end switch (sopt->sopt_name) */
1553                 if (optname != SCTP_AUTOCLOSE) {
1554                         /* make it an "on/off" value */
1555                         val = (val != 0);
1556                 }
1557                 if (*optsize < sizeof(val)) {
1558                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1559                         error = EINVAL;
1560                 }
1561 flags_out:
1562                 SCTP_INP_RUNLOCK(inp);
1563                 if (error == 0) {
1564                         /* return the option value */
1565                         *(int *)optval = val;
1566                         *optsize = sizeof(val);
1567                 }
1568                 break;
1569         case SCTP_GET_PACKET_LOG:
1570                 {
1571 #ifdef  SCTP_PACKET_LOGGING
1572                         uint8_t *target;
1573                         int ret;
1574
1575                         SCTP_CHECK_AND_CAST(target, optval, uint8_t, *optsize);
1576                         ret = sctp_copy_out_packet_log(target, (int)*optsize);
1577                         *optsize = ret;
1578 #else
1579                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
1580                         error = EOPNOTSUPP;
1581 #endif
1582                         break;
1583                 }
1584         case SCTP_PARTIAL_DELIVERY_POINT:
1585                 {
1586                         uint32_t *value;
1587
1588                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1589                         *value = inp->partial_delivery_point;
1590                         *optsize = sizeof(uint32_t);
1591                 }
1592                 break;
1593         case SCTP_FRAGMENT_INTERLEAVE:
1594                 {
1595                         uint32_t *value;
1596
1597                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1598                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) {
1599                                 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) {
1600                                         *value = SCTP_FRAG_LEVEL_2;
1601                                 } else {
1602                                         *value = SCTP_FRAG_LEVEL_1;
1603                                 }
1604                         } else {
1605                                 *value = SCTP_FRAG_LEVEL_0;
1606                         }
1607                         *optsize = sizeof(uint32_t);
1608                 }
1609                 break;
1610         case SCTP_CMT_ON_OFF:
1611                 {
1612                         struct sctp_assoc_value *av;
1613
1614                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1615                         if (sctp_cmt_on_off) {
1616                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1617                                 if (stcb) {
1618                                         av->assoc_value = stcb->asoc.sctp_cmt_on_off;
1619                                         SCTP_TCB_UNLOCK(stcb);
1620
1621                                 } else {
1622                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
1623                                         error = ENOTCONN;
1624                                 }
1625                         } else {
1626                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
1627                                 error = ENOPROTOOPT;
1628                         }
1629                         *optsize = sizeof(*av);
1630                 }
1631                 break;
1632                 /* JRS - Get socket option for pluggable congestion control */
1633         case SCTP_PLUGGABLE_CC:
1634                 {
1635                         struct sctp_assoc_value *av;
1636
1637                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1638                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1639                         if (stcb) {
1640                                 av->assoc_value = stcb->asoc.congestion_control_module;
1641                                 SCTP_TCB_UNLOCK(stcb);
1642                         } else {
1643                                 av->assoc_value = inp->sctp_ep.sctp_default_cc_module;
1644                         }
1645                         *optsize = sizeof(*av);
1646                 }
1647                 break;
1648         case SCTP_GET_ADDR_LEN:
1649                 {
1650                         struct sctp_assoc_value *av;
1651
1652                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1653                         error = EINVAL;
1654 #ifdef INET
1655                         if (av->assoc_value == AF_INET) {
1656                                 av->assoc_value = sizeof(struct sockaddr_in);
1657                                 error = 0;
1658                         }
1659 #endif
1660 #ifdef INET6
1661                         if (av->assoc_value == AF_INET6) {
1662                                 av->assoc_value = sizeof(struct sockaddr_in6);
1663                                 error = 0;
1664                         }
1665 #endif
1666                         if (error) {
1667                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
1668                         }
1669                         *optsize = sizeof(*av);
1670                 }
1671                 break;
1672         case SCTP_GET_ASSOC_NUMBER:
1673                 {
1674                         uint32_t *value, cnt;
1675
1676                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1677                         cnt = 0;
1678                         SCTP_INP_RLOCK(inp);
1679                         LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
1680                                 cnt++;
1681                         }
1682                         SCTP_INP_RUNLOCK(inp);
1683                         *value = cnt;
1684                         *optsize = sizeof(uint32_t);
1685                 }
1686                 break;
1687
1688         case SCTP_GET_ASSOC_ID_LIST:
1689                 {
1690                         struct sctp_assoc_ids *ids;
1691                         unsigned int at, limit;
1692
1693                         SCTP_CHECK_AND_CAST(ids, optval, struct sctp_assoc_ids, *optsize);
1694                         at = 0;
1695                         limit = *optsize / sizeof(sctp_assoc_t);
1696                         SCTP_INP_RLOCK(inp);
1697                         LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
1698                                 if (at < limit) {
1699                                         ids->gaids_assoc_id[at++] = sctp_get_associd(stcb);
1700                                 } else {
1701                                         error = EINVAL;
1702                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
1703                                         break;
1704                                 }
1705                         }
1706                         SCTP_INP_RUNLOCK(inp);
1707                         *optsize = at * sizeof(sctp_assoc_t);
1708                 }
1709                 break;
1710         case SCTP_CONTEXT:
1711                 {
1712                         struct sctp_assoc_value *av;
1713
1714                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1715                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1716
1717                         if (stcb) {
1718                                 av->assoc_value = stcb->asoc.context;
1719                                 SCTP_TCB_UNLOCK(stcb);
1720                         } else {
1721                                 SCTP_INP_RLOCK(inp);
1722                                 av->assoc_value = inp->sctp_context;
1723                                 SCTP_INP_RUNLOCK(inp);
1724                         }
1725                         *optsize = sizeof(*av);
1726                 }
1727                 break;
1728         case SCTP_VRF_ID:
1729                 {
1730                         uint32_t *default_vrfid;
1731
1732                         SCTP_CHECK_AND_CAST(default_vrfid, optval, uint32_t, *optsize);
1733                         *default_vrfid = inp->def_vrf_id;
1734                         break;
1735                 }
1736         case SCTP_GET_ASOC_VRF:
1737                 {
1738                         struct sctp_assoc_value *id;
1739
1740                         SCTP_CHECK_AND_CAST(id, optval, struct sctp_assoc_value, *optsize);
1741                         SCTP_FIND_STCB(inp, stcb, id->assoc_id);
1742                         if (stcb == NULL) {
1743                                 error = EINVAL;
1744                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
1745                                 break;
1746                         }
1747                         id->assoc_value = stcb->asoc.vrf_id;
1748                         break;
1749                 }
1750         case SCTP_GET_VRF_IDS:
1751                 {
1752                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
1753                         error = EOPNOTSUPP;
1754                         break;
1755                 }
1756         case SCTP_GET_NONCE_VALUES:
1757                 {
1758                         struct sctp_get_nonce_values *gnv;
1759
1760                         SCTP_CHECK_AND_CAST(gnv, optval, struct sctp_get_nonce_values, *optsize);
1761                         SCTP_FIND_STCB(inp, stcb, gnv->gn_assoc_id);
1762
1763                         if (stcb) {
1764                                 gnv->gn_peers_tag = stcb->asoc.peer_vtag;
1765                                 gnv->gn_local_tag = stcb->asoc.my_vtag;
1766                                 SCTP_TCB_UNLOCK(stcb);
1767                         } else {
1768                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
1769                                 error = ENOTCONN;
1770                         }
1771                         *optsize = sizeof(*gnv);
1772                 }
1773                 break;
1774         case SCTP_DELAYED_SACK:
1775                 {
1776                         struct sctp_sack_info *sack;
1777
1778                         SCTP_CHECK_AND_CAST(sack, optval, struct sctp_sack_info, *optsize);
1779                         SCTP_FIND_STCB(inp, stcb, sack->sack_assoc_id);
1780                         if (stcb) {
1781                                 sack->sack_delay = stcb->asoc.delayed_ack;
1782                                 sack->sack_freq = stcb->asoc.sack_freq;
1783                                 SCTP_TCB_UNLOCK(stcb);
1784                         } else {
1785                                 SCTP_INP_RLOCK(inp);
1786                                 sack->sack_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
1787                                 sack->sack_freq = inp->sctp_ep.sctp_sack_freq;
1788                                 SCTP_INP_RUNLOCK(inp);
1789                         }
1790                         *optsize = sizeof(*sack);
1791                 }
1792                 break;
1793
1794         case SCTP_GET_SNDBUF_USE:
1795                 {
1796                         struct sctp_sockstat *ss;
1797
1798                         SCTP_CHECK_AND_CAST(ss, optval, struct sctp_sockstat, *optsize);
1799                         SCTP_FIND_STCB(inp, stcb, ss->ss_assoc_id);
1800
1801                         if (stcb) {
1802                                 ss->ss_total_sndbuf = stcb->asoc.total_output_queue_size;
1803                                 ss->ss_total_recv_buf = (stcb->asoc.size_on_reasm_queue +
1804                                     stcb->asoc.size_on_all_streams);
1805                                 SCTP_TCB_UNLOCK(stcb);
1806                         } else {
1807                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
1808                                 error = ENOTCONN;
1809                         }
1810                         *optsize = sizeof(struct sctp_sockstat);
1811                 }
1812                 break;
1813         case SCTP_MAX_BURST:
1814                 {
1815                         uint8_t *value;
1816
1817                         SCTP_CHECK_AND_CAST(value, optval, uint8_t, *optsize);
1818
1819                         SCTP_INP_RLOCK(inp);
1820                         *value = inp->sctp_ep.max_burst;
1821                         SCTP_INP_RUNLOCK(inp);
1822                         *optsize = sizeof(uint8_t);
1823                 }
1824                 break;
1825         case SCTP_MAXSEG:
1826                 {
1827                         struct sctp_assoc_value *av;
1828                         int ovh;
1829
1830                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1831                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1832
1833                         if (stcb) {
1834                                 av->assoc_value = sctp_get_frag_point(stcb, &stcb->asoc);
1835                                 SCTP_TCB_UNLOCK(stcb);
1836                         } else {
1837                                 SCTP_INP_RLOCK(inp);
1838                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1839                                         ovh = SCTP_MED_OVERHEAD;
1840                                 } else {
1841                                         ovh = SCTP_MED_V4_OVERHEAD;
1842                                 }
1843                                 if (inp->sctp_frag_point >= SCTP_DEFAULT_MAXSEGMENT)
1844                                         av->assoc_value = 0;
1845                                 else
1846                                         av->assoc_value = inp->sctp_frag_point - ovh;
1847                                 SCTP_INP_RUNLOCK(inp);
1848                         }
1849                         *optsize = sizeof(struct sctp_assoc_value);
1850                 }
1851                 break;
1852         case SCTP_GET_STAT_LOG:
1853                 error = sctp_fill_stat_log(optval, optsize);
1854                 break;
1855         case SCTP_EVENTS:
1856                 {
1857                         struct sctp_event_subscribe *events;
1858
1859                         SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, *optsize);
1860                         memset(events, 0, sizeof(*events));
1861                         SCTP_INP_RLOCK(inp);
1862                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT))
1863                                 events->sctp_data_io_event = 1;
1864
1865                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT))
1866                                 events->sctp_association_event = 1;
1867
1868                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT))
1869                                 events->sctp_address_event = 1;
1870
1871                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT))
1872                                 events->sctp_send_failure_event = 1;
1873
1874                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR))
1875                                 events->sctp_peer_error_event = 1;
1876
1877                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT))
1878                                 events->sctp_shutdown_event = 1;
1879
1880                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT))
1881                                 events->sctp_partial_delivery_event = 1;
1882
1883                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT))
1884                                 events->sctp_adaptation_layer_event = 1;
1885
1886                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT))
1887                                 events->sctp_authentication_event = 1;
1888
1889                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT))
1890                                 events->sctp_stream_reset_events = 1;
1891                         SCTP_INP_RUNLOCK(inp);
1892                         *optsize = sizeof(struct sctp_event_subscribe);
1893                 }
1894                 break;
1895
1896         case SCTP_ADAPTATION_LAYER:
1897                 {
1898                         uint32_t *value;
1899
1900                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1901
1902                         SCTP_INP_RLOCK(inp);
1903                         *value = inp->sctp_ep.adaptation_layer_indicator;
1904                         SCTP_INP_RUNLOCK(inp);
1905                         *optsize = sizeof(uint32_t);
1906                 }
1907                 break;
1908         case SCTP_SET_INITIAL_DBG_SEQ:
1909                 {
1910                         uint32_t *value;
1911
1912                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1913                         SCTP_INP_RLOCK(inp);
1914                         *value = inp->sctp_ep.initial_sequence_debug;
1915                         SCTP_INP_RUNLOCK(inp);
1916                         *optsize = sizeof(uint32_t);
1917                 }
1918                 break;
1919         case SCTP_GET_LOCAL_ADDR_SIZE:
1920                 {
1921                         uint32_t *value;
1922
1923                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1924                         SCTP_INP_RLOCK(inp);
1925                         *value = sctp_count_max_addresses(inp);
1926                         SCTP_INP_RUNLOCK(inp);
1927                         *optsize = sizeof(uint32_t);
1928                 }
1929                 break;
1930         case SCTP_GET_REMOTE_ADDR_SIZE:
1931                 {
1932                         uint32_t *value;
1933                         size_t size;
1934                         struct sctp_nets *net;
1935
1936                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1937                         /* FIXME MT: change to sctp_assoc_value? */
1938                         SCTP_FIND_STCB(inp, stcb, (sctp_assoc_t) * value);
1939
1940                         if (stcb) {
1941                                 size = 0;
1942                                 /* Count the sizes */
1943                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1944                                         if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) ||
1945                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) {
1946                                                 size += sizeof(struct sockaddr_in6);
1947                                         } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) {
1948                                                 size += sizeof(struct sockaddr_in);
1949                                         } else {
1950                                                 /* huh */
1951                                                 break;
1952                                         }
1953                                 }
1954                                 SCTP_TCB_UNLOCK(stcb);
1955                                 *value = (uint32_t) size;
1956                         } else {
1957                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
1958                                 error = ENOTCONN;
1959                         }
1960                         *optsize = sizeof(uint32_t);
1961                 }
1962                 break;
1963         case SCTP_GET_PEER_ADDRESSES:
1964                 /*
1965                  * Get the address information, an array is passed in to
1966                  * fill up we pack it.
1967                  */
1968                 {
1969                         size_t cpsz, left;
1970                         struct sockaddr_storage *sas;
1971                         struct sctp_nets *net;
1972                         struct sctp_getaddresses *saddr;
1973
1974                         SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize);
1975                         SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id);
1976
1977                         if (stcb) {
1978                                 left = (*optsize) - sizeof(struct sctp_getaddresses);
1979                                 *optsize = sizeof(struct sctp_getaddresses);
1980                                 sas = (struct sockaddr_storage *)&saddr->addr[0];
1981
1982                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1983                                         if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) ||
1984                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) {
1985                                                 cpsz = sizeof(struct sockaddr_in6);
1986                                         } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) {
1987                                                 cpsz = sizeof(struct sockaddr_in);
1988                                         } else {
1989                                                 /* huh */
1990                                                 break;
1991                                         }
1992                                         if (left < cpsz) {
1993                                                 /* not enough room. */
1994                                                 break;
1995                                         }
1996                                         if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) &&
1997                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET)) {
1998                                                 /* Must map the address */
1999                                                 in6_sin_2_v4mapsin6((struct sockaddr_in *)&net->ro._l_addr,
2000                                                     (struct sockaddr_in6 *)sas);
2001                                         } else {
2002                                                 memcpy(sas, &net->ro._l_addr, cpsz);
2003                                         }
2004                                         ((struct sockaddr_in *)sas)->sin_port = stcb->rport;
2005
2006                                         sas = (struct sockaddr_storage *)((caddr_t)sas + cpsz);
2007                                         left -= cpsz;
2008                                         *optsize += cpsz;
2009                                 }
2010                                 SCTP_TCB_UNLOCK(stcb);
2011                         } else {
2012                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
2013                                 error = ENOENT;
2014                         }
2015                 }
2016                 break;
2017         case SCTP_GET_LOCAL_ADDRESSES:
2018                 {
2019                         size_t limit, actual;
2020                         struct sockaddr_storage *sas;
2021                         struct sctp_getaddresses *saddr;
2022
2023                         SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize);
2024                         SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id);
2025
2026                         sas = (struct sockaddr_storage *)&saddr->addr[0];
2027                         limit = *optsize - sizeof(sctp_assoc_t);
2028                         actual = sctp_fill_up_addresses(inp, stcb, limit, sas);
2029                         if (stcb) {
2030                                 SCTP_TCB_UNLOCK(stcb);
2031                         }
2032                         *optsize = sizeof(struct sockaddr_storage) + actual;
2033                 }
2034                 break;
2035         case SCTP_PEER_ADDR_PARAMS:
2036                 {
2037                         struct sctp_paddrparams *paddrp;
2038                         struct sctp_nets *net;
2039
2040                         SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, *optsize);
2041                         SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id);
2042
2043                         net = NULL;
2044                         if (stcb) {
2045                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address);
2046                         } else {
2047                                 /*
2048                                  * We increment here since
2049                                  * sctp_findassociation_ep_addr() wil do a
2050                                  * decrement if it finds the stcb as long as
2051                                  * the locked tcb (last argument) is NOT a
2052                                  * TCB.. aka NULL.
2053                                  */
2054                                 SCTP_INP_INCR_REF(inp);
2055                                 stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddrp->spp_address, &net, NULL, NULL);
2056                                 if (stcb == NULL) {
2057                                         SCTP_INP_DECR_REF(inp);
2058                                 }
2059                         }
2060                         if (stcb && (net == NULL)) {
2061                                 struct sockaddr *sa;
2062
2063                                 sa = (struct sockaddr *)&paddrp->spp_address;
2064                                 if (sa->sa_family == AF_INET) {
2065                                         struct sockaddr_in *sin;
2066
2067                                         sin = (struct sockaddr_in *)sa;
2068                                         if (sin->sin_addr.s_addr) {
2069                                                 error = EINVAL;
2070                                                 SCTP_TCB_UNLOCK(stcb);
2071                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2072                                                 break;
2073                                         }
2074                                 } else if (sa->sa_family == AF_INET6) {
2075                                         struct sockaddr_in6 *sin6;
2076
2077                                         sin6 = (struct sockaddr_in6 *)sa;
2078                                         if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2079                                                 error = EINVAL;
2080                                                 SCTP_TCB_UNLOCK(stcb);
2081                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2082                                                 break;
2083                                         }
2084                                 } else {
2085                                         error = EAFNOSUPPORT;
2086                                         SCTP_TCB_UNLOCK(stcb);
2087                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2088                                         break;
2089                                 }
2090                         }
2091                         if (stcb) {
2092                                 /* Applys to the specific association */
2093                                 paddrp->spp_flags = 0;
2094                                 if (net) {
2095                                         int ovh;
2096
2097                                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2098                                                 ovh = SCTP_MED_OVERHEAD;
2099                                         } else {
2100                                                 ovh = SCTP_MED_V4_OVERHEAD;
2101                                         }
2102
2103
2104                                         paddrp->spp_pathmaxrxt = net->failure_threshold;
2105                                         paddrp->spp_pathmtu = net->mtu - ovh;
2106                                         /* get flags for HB */
2107                                         if (net->dest_state & SCTP_ADDR_NOHB)
2108                                                 paddrp->spp_flags |= SPP_HB_DISABLE;
2109                                         else
2110                                                 paddrp->spp_flags |= SPP_HB_ENABLE;
2111                                         /* get flags for PMTU */
2112                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
2113                                                 paddrp->spp_flags |= SPP_PMTUD_ENABLE;
2114                                         } else {
2115                                                 paddrp->spp_flags |= SPP_PMTUD_DISABLE;
2116                                         }
2117 #ifdef INET
2118                                         if (net->ro._l_addr.sin.sin_family == AF_INET) {
2119                                                 paddrp->spp_ipv4_tos = net->tos_flowlabel & 0x000000fc;
2120                                                 paddrp->spp_flags |= SPP_IPV4_TOS;
2121                                         }
2122 #endif
2123 #ifdef INET6
2124                                         if (net->ro._l_addr.sin6.sin6_family == AF_INET6) {
2125                                                 paddrp->spp_ipv6_flowlabel = net->tos_flowlabel;
2126                                                 paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
2127                                         }
2128 #endif
2129                                 } else {
2130                                         /*
2131                                          * No destination so return default
2132                                          * value
2133                                          */
2134                                         int cnt = 0;
2135
2136                                         paddrp->spp_pathmaxrxt = stcb->asoc.def_net_failure;
2137                                         paddrp->spp_pathmtu = sctp_get_frag_point(stcb, &stcb->asoc);
2138 #ifdef INET
2139                                         paddrp->spp_ipv4_tos = stcb->asoc.default_tos & 0x000000fc;
2140                                         paddrp->spp_flags |= SPP_IPV4_TOS;
2141 #endif
2142 #ifdef INET6
2143                                         paddrp->spp_ipv6_flowlabel = stcb->asoc.default_flowlabel;
2144                                         paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
2145 #endif
2146                                         /* default settings should be these */
2147                                         if (stcb->asoc.hb_is_disabled == 0) {
2148                                                 paddrp->spp_flags |= SPP_HB_ENABLE;
2149                                         } else {
2150                                                 paddrp->spp_flags |= SPP_HB_DISABLE;
2151                                         }
2152                                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2153                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
2154                                                         cnt++;
2155                                                 }
2156                                         }
2157                                         if (cnt) {
2158                                                 paddrp->spp_flags |= SPP_PMTUD_ENABLE;
2159                                         }
2160                                 }
2161                                 paddrp->spp_hbinterval = stcb->asoc.heart_beat_delay;
2162                                 paddrp->spp_assoc_id = sctp_get_associd(stcb);
2163                                 SCTP_TCB_UNLOCK(stcb);
2164                         } else {
2165                                 /* Use endpoint defaults */
2166                                 SCTP_INP_RLOCK(inp);
2167                                 paddrp->spp_pathmaxrxt = inp->sctp_ep.def_net_failure;
2168                                 paddrp->spp_hbinterval = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
2169                                 paddrp->spp_assoc_id = (sctp_assoc_t) 0;
2170                                 /* get inp's default */
2171 #ifdef INET
2172                                 paddrp->spp_ipv4_tos = inp->ip_inp.inp.inp_ip_tos;
2173                                 paddrp->spp_flags |= SPP_IPV4_TOS;
2174 #endif
2175 #ifdef INET6
2176                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2177                                         paddrp->spp_ipv6_flowlabel = ((struct in6pcb *)inp)->in6p_flowinfo;
2178                                         paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
2179                                 }
2180 #endif
2181                                 /* can't return this */
2182                                 paddrp->spp_pathmtu = 0;
2183
2184                                 /* default behavior, no stcb */
2185                                 paddrp->spp_flags = SPP_PMTUD_ENABLE;
2186
2187                                 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
2188                                         paddrp->spp_flags |= SPP_HB_ENABLE;
2189                                 } else {
2190                                         paddrp->spp_flags |= SPP_HB_DISABLE;
2191                                 }
2192                                 SCTP_INP_RUNLOCK(inp);
2193                         }
2194                         *optsize = sizeof(struct sctp_paddrparams);
2195                 }
2196                 break;
2197         case SCTP_GET_PEER_ADDR_INFO:
2198                 {
2199                         struct sctp_paddrinfo *paddri;
2200                         struct sctp_nets *net;
2201
2202                         SCTP_CHECK_AND_CAST(paddri, optval, struct sctp_paddrinfo, *optsize);
2203                         SCTP_FIND_STCB(inp, stcb, paddri->spinfo_assoc_id);
2204
2205                         net = NULL;
2206                         if (stcb) {
2207                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddri->spinfo_address);
2208                         } else {
2209                                 /*
2210                                  * We increment here since
2211                                  * sctp_findassociation_ep_addr() wil do a
2212                                  * decrement if it finds the stcb as long as
2213                                  * the locked tcb (last argument) is NOT a
2214                                  * TCB.. aka NULL.
2215                                  */
2216                                 SCTP_INP_INCR_REF(inp);
2217                                 stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddri->spinfo_address, &net, NULL, NULL);
2218                                 if (stcb == NULL) {
2219                                         SCTP_INP_DECR_REF(inp);
2220                                 }
2221                         }
2222
2223                         if ((stcb) && (net)) {
2224                                 paddri->spinfo_state = net->dest_state & (SCTP_REACHABLE_MASK | SCTP_ADDR_NOHB);
2225                                 paddri->spinfo_cwnd = net->cwnd;
2226                                 paddri->spinfo_srtt = ((net->lastsa >> 2) + net->lastsv) >> 1;
2227                                 paddri->spinfo_rto = net->RTO;
2228                                 paddri->spinfo_assoc_id = sctp_get_associd(stcb);
2229                                 SCTP_TCB_UNLOCK(stcb);
2230                         } else {
2231                                 if (stcb) {
2232                                         SCTP_TCB_UNLOCK(stcb);
2233                                 }
2234                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
2235                                 error = ENOENT;
2236                         }
2237                         *optsize = sizeof(struct sctp_paddrinfo);
2238                 }
2239                 break;
2240         case SCTP_PCB_STATUS:
2241                 {
2242                         struct sctp_pcbinfo *spcb;
2243
2244                         SCTP_CHECK_AND_CAST(spcb, optval, struct sctp_pcbinfo, *optsize);
2245                         sctp_fill_pcbinfo(spcb);
2246                         *optsize = sizeof(struct sctp_pcbinfo);
2247                 }
2248                 break;
2249
2250         case SCTP_STATUS:
2251                 {
2252                         struct sctp_nets *net;
2253                         struct sctp_status *sstat;
2254
2255                         SCTP_CHECK_AND_CAST(sstat, optval, struct sctp_status, *optsize);
2256                         SCTP_FIND_STCB(inp, stcb, sstat->sstat_assoc_id);
2257
2258                         if (stcb == NULL) {
2259                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2260                                 error = EINVAL;
2261                                 break;
2262                         }
2263                         /*
2264                          * I think passing the state is fine since
2265                          * sctp_constants.h will be available to the user
2266                          * land.
2267                          */
2268                         sstat->sstat_state = stcb->asoc.state;
2269                         sstat->sstat_assoc_id = sctp_get_associd(stcb);
2270                         sstat->sstat_rwnd = stcb->asoc.peers_rwnd;
2271                         sstat->sstat_unackdata = stcb->asoc.sent_queue_cnt;
2272                         /*
2273                          * We can't include chunks that have been passed to
2274                          * the socket layer. Only things in queue.
2275                          */
2276                         sstat->sstat_penddata = (stcb->asoc.cnt_on_reasm_queue +
2277                             stcb->asoc.cnt_on_all_streams);
2278
2279
2280                         sstat->sstat_instrms = stcb->asoc.streamincnt;
2281                         sstat->sstat_outstrms = stcb->asoc.streamoutcnt;
2282                         sstat->sstat_fragmentation_point = sctp_get_frag_point(stcb, &stcb->asoc);
2283                         memcpy(&sstat->sstat_primary.spinfo_address,
2284                             &stcb->asoc.primary_destination->ro._l_addr,
2285                             ((struct sockaddr *)(&stcb->asoc.primary_destination->ro._l_addr))->sa_len);
2286                         net = stcb->asoc.primary_destination;
2287                         ((struct sockaddr_in *)&sstat->sstat_primary.spinfo_address)->sin_port = stcb->rport;
2288                         /*
2289                          * Again the user can get info from sctp_constants.h
2290                          * for what the state of the network is.
2291                          */
2292                         sstat->sstat_primary.spinfo_state = net->dest_state & SCTP_REACHABLE_MASK;
2293                         sstat->sstat_primary.spinfo_cwnd = net->cwnd;
2294                         sstat->sstat_primary.spinfo_srtt = net->lastsa;
2295                         sstat->sstat_primary.spinfo_rto = net->RTO;
2296                         sstat->sstat_primary.spinfo_mtu = net->mtu;
2297                         sstat->sstat_primary.spinfo_assoc_id = sctp_get_associd(stcb);
2298                         SCTP_TCB_UNLOCK(stcb);
2299                         *optsize = sizeof(*sstat);
2300                 }
2301                 break;
2302         case SCTP_RTOINFO:
2303                 {
2304                         struct sctp_rtoinfo *srto;
2305
2306                         SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, *optsize);
2307                         SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id);
2308
2309                         if (stcb) {
2310                                 srto->srto_initial = stcb->asoc.initial_rto;
2311                                 srto->srto_max = stcb->asoc.maxrto;
2312                                 srto->srto_min = stcb->asoc.minrto;
2313                                 SCTP_TCB_UNLOCK(stcb);
2314                         } else {
2315                                 SCTP_INP_RLOCK(inp);
2316                                 srto->srto_initial = inp->sctp_ep.initial_rto;
2317                                 srto->srto_max = inp->sctp_ep.sctp_maxrto;
2318                                 srto->srto_min = inp->sctp_ep.sctp_minrto;
2319                                 SCTP_INP_RUNLOCK(inp);
2320                         }
2321                         *optsize = sizeof(*srto);
2322                 }
2323                 break;
2324         case SCTP_ASSOCINFO:
2325                 {
2326                         struct sctp_assocparams *sasoc;
2327                         uint32_t oldval;
2328
2329                         SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, *optsize);
2330                         SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id);
2331
2332                         if (stcb) {
2333                                 oldval = sasoc->sasoc_cookie_life;
2334                                 sasoc->sasoc_cookie_life = TICKS_TO_MSEC(stcb->asoc.cookie_life);
2335                                 sasoc->sasoc_asocmaxrxt = stcb->asoc.max_send_times;
2336                                 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets;
2337                                 sasoc->sasoc_peer_rwnd = stcb->asoc.peers_rwnd;
2338                                 sasoc->sasoc_local_rwnd = stcb->asoc.my_rwnd;
2339                                 SCTP_TCB_UNLOCK(stcb);
2340                         } else {
2341                                 SCTP_INP_RLOCK(inp);
2342                                 sasoc->sasoc_cookie_life = TICKS_TO_MSEC(inp->sctp_ep.def_cookie_life);
2343                                 sasoc->sasoc_asocmaxrxt = inp->sctp_ep.max_send_times;
2344                                 sasoc->sasoc_number_peer_destinations = 0;
2345                                 sasoc->sasoc_peer_rwnd = 0;
2346                                 sasoc->sasoc_local_rwnd = sbspace(&inp->sctp_socket->so_rcv);
2347                                 SCTP_INP_RUNLOCK(inp);
2348                         }
2349                         *optsize = sizeof(*sasoc);
2350                 }
2351                 break;
2352         case SCTP_DEFAULT_SEND_PARAM:
2353                 {
2354                         struct sctp_sndrcvinfo *s_info;
2355
2356                         SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, *optsize);
2357                         SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id);
2358
2359                         if (stcb) {
2360                                 memcpy(s_info, &stcb->asoc.def_send, sizeof(stcb->asoc.def_send));
2361                                 SCTP_TCB_UNLOCK(stcb);
2362                         } else {
2363                                 SCTP_INP_RLOCK(inp);
2364                                 memcpy(s_info, &inp->def_send, sizeof(inp->def_send));
2365                                 SCTP_INP_RUNLOCK(inp);
2366                         }
2367                         *optsize = sizeof(*s_info);
2368                 }
2369                 break;
2370         case SCTP_INITMSG:
2371                 {
2372                         struct sctp_initmsg *sinit;
2373
2374                         SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, *optsize);
2375                         SCTP_INP_RLOCK(inp);
2376                         sinit->sinit_num_ostreams = inp->sctp_ep.pre_open_stream_count;
2377                         sinit->sinit_max_instreams = inp->sctp_ep.max_open_streams_intome;
2378                         sinit->sinit_max_attempts = inp->sctp_ep.max_init_times;
2379                         sinit->sinit_max_init_timeo = inp->sctp_ep.initial_init_rto_max;
2380                         SCTP_INP_RUNLOCK(inp);
2381                         *optsize = sizeof(*sinit);
2382                 }
2383                 break;
2384         case SCTP_PRIMARY_ADDR:
2385                 /* we allow a "get" operation on this */
2386                 {
2387                         struct sctp_setprim *ssp;
2388
2389                         SCTP_CHECK_AND_CAST(ssp, optval, struct sctp_setprim, *optsize);
2390                         SCTP_FIND_STCB(inp, stcb, ssp->ssp_assoc_id);
2391
2392                         if (stcb) {
2393                                 /* simply copy out the sockaddr_storage... */
2394                                 int len;
2395
2396                                 len = *optsize;
2397                                 if (len > stcb->asoc.primary_destination->ro._l_addr.sa.sa_len)
2398                                         len = stcb->asoc.primary_destination->ro._l_addr.sa.sa_len;
2399
2400                                 memcpy(&ssp->ssp_addr,
2401                                     &stcb->asoc.primary_destination->ro._l_addr,
2402                                     len);
2403                                 SCTP_TCB_UNLOCK(stcb);
2404                         } else {
2405                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2406                                 error = EINVAL;
2407                         }
2408                         *optsize = sizeof(*ssp);
2409                 }
2410                 break;
2411
2412         case SCTP_HMAC_IDENT:
2413                 {
2414                         struct sctp_hmacalgo *shmac;
2415                         sctp_hmaclist_t *hmaclist;
2416                         uint32_t size;
2417                         int i;
2418
2419                         SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, *optsize);
2420
2421                         SCTP_INP_RLOCK(inp);
2422                         hmaclist = inp->sctp_ep.local_hmacs;
2423                         if (hmaclist == NULL) {
2424                                 /* no HMACs to return */
2425                                 *optsize = sizeof(*shmac);
2426                                 SCTP_INP_RUNLOCK(inp);
2427                                 break;
2428                         }
2429                         /* is there room for all of the hmac ids? */
2430                         size = sizeof(*shmac) + (hmaclist->num_algo *
2431                             sizeof(shmac->shmac_idents[0]));
2432                         if ((size_t)(*optsize) < size) {
2433                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2434                                 error = EINVAL;
2435                                 SCTP_INP_RUNLOCK(inp);
2436                                 break;
2437                         }
2438                         /* copy in the list */
2439                         for (i = 0; i < hmaclist->num_algo; i++)
2440                                 shmac->shmac_idents[i] = hmaclist->hmac[i];
2441                         SCTP_INP_RUNLOCK(inp);
2442                         *optsize = size;
2443                         break;
2444                 }
2445         case SCTP_AUTH_ACTIVE_KEY:
2446                 {
2447                         struct sctp_authkeyid *scact;
2448
2449                         SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, *optsize);
2450                         SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id);
2451
2452                         if (stcb) {
2453                                 /* get the active key on the assoc */
2454                                 scact->scact_keynumber = stcb->asoc.authinfo.assoc_keyid;
2455                                 SCTP_TCB_UNLOCK(stcb);
2456                         } else {
2457                                 /* get the endpoint active key */
2458                                 SCTP_INP_RLOCK(inp);
2459                                 scact->scact_keynumber = inp->sctp_ep.default_keyid;
2460                                 SCTP_INP_RUNLOCK(inp);
2461                         }
2462                         *optsize = sizeof(*scact);
2463                         break;
2464                 }
2465         case SCTP_LOCAL_AUTH_CHUNKS:
2466                 {
2467                         struct sctp_authchunks *sac;
2468                         sctp_auth_chklist_t *chklist = NULL;
2469                         size_t size = 0;
2470
2471                         SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize);
2472                         SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id);
2473
2474                         if (stcb) {
2475                                 /* get off the assoc */
2476                                 chklist = stcb->asoc.local_auth_chunks;
2477                                 /* is there enough space? */
2478                                 size = sctp_auth_get_chklist_size(chklist);
2479                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2480                                         error = EINVAL;
2481                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2482                                 } else {
2483                                         /* copy in the chunks */
2484                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2485                                 }
2486                                 SCTP_TCB_UNLOCK(stcb);
2487                         } else {
2488                                 /* get off the endpoint */
2489                                 SCTP_INP_RLOCK(inp);
2490                                 chklist = inp->sctp_ep.local_auth_chunks;
2491                                 /* is there enough space? */
2492                                 size = sctp_auth_get_chklist_size(chklist);
2493                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2494                                         error = EINVAL;
2495                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2496                                 } else {
2497                                         /* copy in the chunks */
2498                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2499                                 }
2500                                 SCTP_INP_RUNLOCK(inp);
2501                         }
2502                         *optsize = sizeof(struct sctp_authchunks) + size;
2503                         break;
2504                 }
2505         case SCTP_PEER_AUTH_CHUNKS:
2506                 {
2507                         struct sctp_authchunks *sac;
2508                         sctp_auth_chklist_t *chklist = NULL;
2509                         size_t size = 0;
2510
2511                         SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize);
2512                         SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id);
2513
2514                         if (stcb) {
2515                                 /* get off the assoc */
2516                                 chklist = stcb->asoc.peer_auth_chunks;
2517                                 /* is there enough space? */
2518                                 size = sctp_auth_get_chklist_size(chklist);
2519                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2520                                         error = EINVAL;
2521                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2522                                 } else {
2523                                         /* copy in the chunks */
2524                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2525                                 }
2526                                 SCTP_TCB_UNLOCK(stcb);
2527                         } else {
2528                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
2529                                 error = ENOENT;
2530                         }
2531                         *optsize = sizeof(struct sctp_authchunks) + size;
2532                         break;
2533                 }
2534
2535
2536         default:
2537                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
2538                 error = ENOPROTOOPT;
2539                 *optsize = 0;
2540                 break;
2541         }                       /* end switch (sopt->sopt_name) */
2542         return (error);
2543 }
2544
2545 static int
2546 sctp_setopt(struct socket *so, int optname, void *optval, size_t optsize,
2547     void *p)
2548 {
2549         int error, set_opt;
2550         uint32_t *mopt;
2551         struct sctp_tcb *stcb = NULL;
2552         struct sctp_inpcb *inp = NULL;
2553         uint32_t vrf_id;
2554
2555         if (optval == NULL) {
2556                 SCTP_PRINTF("optval is NULL\n");
2557                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2558                 return (EINVAL);
2559         }
2560         inp = (struct sctp_inpcb *)so->so_pcb;
2561         if (inp == 0) {
2562                 SCTP_PRINTF("inp is NULL?\n");
2563                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2564                 return EINVAL;
2565         }
2566         vrf_id = inp->def_vrf_id;
2567
2568         error = 0;
2569         switch (optname) {
2570         case SCTP_NODELAY:
2571         case SCTP_AUTOCLOSE:
2572         case SCTP_AUTO_ASCONF:
2573         case SCTP_EXPLICIT_EOR:
2574         case SCTP_DISABLE_FRAGMENTS:
2575         case SCTP_USE_EXT_RCVINFO:
2576         case SCTP_I_WANT_MAPPED_V4_ADDR:
2577                 /* copy in the option value */
2578                 SCTP_CHECK_AND_CAST(mopt, optval, uint32_t, optsize);
2579                 set_opt = 0;
2580                 if (error)
2581                         break;
2582                 switch (optname) {
2583                 case SCTP_DISABLE_FRAGMENTS:
2584                         set_opt = SCTP_PCB_FLAGS_NO_FRAGMENT;
2585                         break;
2586                 case SCTP_AUTO_ASCONF:
2587                         /*
2588                          * NOTE: we don't really support this flag
2589                          */
2590                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
2591                                 /* only valid for bound all sockets */
2592                                 set_opt = SCTP_PCB_FLAGS_AUTO_ASCONF;
2593                         } else {
2594                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2595                                 return (EINVAL);
2596                         }
2597                         break;
2598                 case SCTP_EXPLICIT_EOR:
2599                         set_opt = SCTP_PCB_FLAGS_EXPLICIT_EOR;
2600                         break;
2601                 case SCTP_USE_EXT_RCVINFO:
2602                         set_opt = SCTP_PCB_FLAGS_EXT_RCVINFO;
2603                         break;
2604                 case SCTP_I_WANT_MAPPED_V4_ADDR:
2605                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2606                                 set_opt = SCTP_PCB_FLAGS_NEEDS_MAPPED_V4;
2607                         } else {
2608                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2609                                 return (EINVAL);
2610                         }
2611                         break;
2612                 case SCTP_NODELAY:
2613                         set_opt = SCTP_PCB_FLAGS_NODELAY;
2614                         break;
2615                 case SCTP_AUTOCLOSE:
2616                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2617                             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
2618                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2619                                 return (EINVAL);
2620                         }
2621                         set_opt = SCTP_PCB_FLAGS_AUTOCLOSE;
2622                         /*
2623                          * The value is in ticks. Note this does not effect
2624                          * old associations, only new ones.
2625                          */
2626                         inp->sctp_ep.auto_close_time = SEC_TO_TICKS(*mopt);
2627                         break;
2628                 }
2629                 SCTP_INP_WLOCK(inp);
2630                 if (*mopt != 0) {
2631                         sctp_feature_on(inp, set_opt);
2632                 } else {
2633                         sctp_feature_off(inp, set_opt);
2634                 }
2635                 SCTP_INP_WUNLOCK(inp);
2636                 break;
2637         case SCTP_PARTIAL_DELIVERY_POINT:
2638                 {
2639                         uint32_t *value;
2640
2641                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, optsize);
2642                         if (*value > SCTP_SB_LIMIT_RCV(so)) {
2643                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2644                                 error = EINVAL;
2645                                 break;
2646                         }
2647                         inp->partial_delivery_point = *value;
2648                 }
2649                 break;
2650         case SCTP_FRAGMENT_INTERLEAVE:
2651                 /* not yet until we re-write sctp_recvmsg() */
2652                 {
2653                         uint32_t *level;
2654
2655                         SCTP_CHECK_AND_CAST(level, optval, uint32_t, optsize);
2656                         if (*level == SCTP_FRAG_LEVEL_2) {
2657                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2658                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2659                         } else if (*level == SCTP_FRAG_LEVEL_1) {
2660                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2661                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2662                         } else if (*level == SCTP_FRAG_LEVEL_0) {
2663                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2664                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2665
2666                         } else {
2667                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2668                                 error = EINVAL;
2669                         }
2670                 }
2671                 break;
2672         case SCTP_CMT_ON_OFF:
2673                 {
2674                         struct sctp_assoc_value *av;
2675
2676                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2677                         if (sctp_cmt_on_off) {
2678                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2679                                 if (stcb) {
2680                                         stcb->asoc.sctp_cmt_on_off = (uint8_t) av->assoc_value;
2681                                         SCTP_TCB_UNLOCK(stcb);
2682                                 } else {
2683                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
2684                                         error = ENOTCONN;
2685                                 }
2686                         } else {
2687                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
2688                                 error = ENOPROTOOPT;
2689                         }
2690                 }
2691                 break;
2692                 /* JRS - Set socket option for pluggable congestion control */
2693         case SCTP_PLUGGABLE_CC:
2694                 {
2695                         struct sctp_assoc_value *av;
2696
2697                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2698                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2699                         if (stcb) {
2700                                 switch (av->assoc_value) {
2701                                         /*
2702                                          * JRS - Standard TCP congestion
2703                                          * control
2704                                          */
2705                                 case SCTP_CC_RFC2581:
2706                                         {
2707                                                 stcb->asoc.congestion_control_module = SCTP_CC_RFC2581;
2708                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_set_initial_cc_param;
2709                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_cwnd_update_after_sack;
2710                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_cwnd_update_after_fr;
2711                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_cwnd_update_after_timeout;
2712                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_cwnd_update_after_ecn_echo;
2713                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
2714                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
2715                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_cwnd_update_after_fr_timer;
2716                                                 SCTP_TCB_UNLOCK(stcb);
2717                                                 break;
2718                                         }
2719                                         /*
2720                                          * JRS - High Speed TCP congestion
2721                                          * control (Floyd)
2722                                          */
2723                                 case SCTP_CC_HSTCP:
2724                                         {
2725                                                 stcb->asoc.congestion_control_module = SCTP_CC_HSTCP;
2726                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_set_initial_cc_param;
2727                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_hs_cwnd_update_after_sack;
2728                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_hs_cwnd_update_after_fr;
2729                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_cwnd_update_after_timeout;
2730                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_cwnd_update_after_ecn_echo;
2731                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
2732                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
2733                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_cwnd_update_after_fr_timer;
2734                                                 SCTP_TCB_UNLOCK(stcb);
2735                                                 break;
2736                                         }
2737                                         /* JRS - HTCP congestion control */
2738                                 case SCTP_CC_HTCP:
2739                                         {
2740                                                 stcb->asoc.congestion_control_module = SCTP_CC_HTCP;
2741                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_htcp_set_initial_cc_param;
2742                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_htcp_cwnd_update_after_sack;
2743                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_htcp_cwnd_update_after_fr;
2744                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_htcp_cwnd_update_after_timeout;
2745                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_htcp_cwnd_update_after_ecn_echo;
2746                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
2747                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
2748                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_htcp_cwnd_update_after_fr_timer;
2749                                                 SCTP_TCB_UNLOCK(stcb);
2750                                                 break;
2751                                         }
2752                                         /*
2753                                          * JRS - All other values are
2754                                          * invalid
2755                                          */
2756                                 default:
2757                                         {
2758                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2759                                                 error = EINVAL;
2760                                                 SCTP_TCB_UNLOCK(stcb);
2761                                                 break;
2762                                         }
2763                                 }
2764                         } else {
2765                                 switch (av->assoc_value) {
2766                                 case SCTP_CC_RFC2581:
2767                                 case SCTP_CC_HSTCP:
2768                                 case SCTP_CC_HTCP:
2769                                         inp->sctp_ep.sctp_default_cc_module = av->assoc_value;
2770                                         break;
2771                                 default:
2772                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2773                                         error = EINVAL;
2774                                         break;
2775                                 };
2776                         }
2777                 }
2778                 break;
2779         case SCTP_CLR_STAT_LOG:
2780                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
2781                 error = EOPNOTSUPP;
2782                 break;
2783         case SCTP_CONTEXT:
2784                 {
2785                         struct sctp_assoc_value *av;
2786
2787                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2788                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2789
2790                         if (stcb) {
2791                                 stcb->asoc.context = av->assoc_value;
2792                                 SCTP_TCB_UNLOCK(stcb);
2793                         } else {
2794                                 SCTP_INP_WLOCK(inp);
2795                                 inp->sctp_context = av->assoc_value;
2796                                 SCTP_INP_WUNLOCK(inp);
2797                         }
2798                 }
2799                 break;
2800         case SCTP_VRF_ID:
2801                 {
2802                         uint32_t *default_vrfid;
2803
2804                         SCTP_CHECK_AND_CAST(default_vrfid, optval, uint32_t, optsize);
2805                         if (*default_vrfid > SCTP_MAX_VRF_ID) {
2806                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2807                                 error = EINVAL;
2808                                 break;
2809                         }
2810                         inp->def_vrf_id = *default_vrfid;
2811                         break;
2812                 }
2813         case SCTP_DEL_VRF_ID:
2814                 {
2815                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
2816                         error = EOPNOTSUPP;
2817                         break;
2818                 }
2819         case SCTP_ADD_VRF_ID:
2820                 {
2821                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
2822                         error = EOPNOTSUPP;
2823                         break;
2824                 }
2825         case SCTP_DELAYED_SACK:
2826                 {
2827                         struct sctp_sack_info *sack;
2828
2829                         SCTP_CHECK_AND_CAST(sack, optval, struct sctp_sack_info, optsize);
2830                         SCTP_FIND_STCB(inp, stcb, sack->sack_assoc_id);
2831                         if (sack->sack_delay) {
2832                                 if (sack->sack_delay > SCTP_MAX_SACK_DELAY)
2833                                         sack->sack_delay = SCTP_MAX_SACK_DELAY;
2834                         }
2835                         if (stcb) {
2836                                 if (sack->sack_delay) {
2837                                         if (MSEC_TO_TICKS(sack->sack_delay) < 1) {
2838                                                 sack->sack_delay = TICKS_TO_MSEC(1);
2839                                         }
2840                                         stcb->asoc.delayed_ack = sack->sack_delay;
2841                                 }
2842                                 if (sack->sack_freq) {
2843                                         stcb->asoc.sack_freq = sack->sack_freq;
2844                                 }
2845                                 SCTP_TCB_UNLOCK(stcb);
2846                         } else {
2847                                 SCTP_INP_WLOCK(inp);
2848                                 if (sack->sack_delay) {
2849                                         if (MSEC_TO_TICKS(sack->sack_delay) < 1) {
2850                                                 sack->sack_delay = TICKS_TO_MSEC(1);
2851                                         }
2852                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(sack->sack_delay);
2853                                 }
2854                                 if (sack->sack_freq) {
2855                                         inp->sctp_ep.sctp_sack_freq = sack->sack_freq;
2856                                 }
2857                                 SCTP_INP_WUNLOCK(inp);
2858                         }
2859                         break;
2860                 }
2861         case SCTP_AUTH_CHUNK:
2862                 {
2863                         struct sctp_authchunk *sauth;
2864
2865                         SCTP_CHECK_AND_CAST(sauth, optval, struct sctp_authchunk, optsize);
2866
2867                         SCTP_INP_WLOCK(inp);
2868                         if (sctp_auth_add_chunk(sauth->sauth_chunk, inp->sctp_ep.local_auth_chunks)) {
2869                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2870                                 error = EINVAL;
2871                         }
2872                         SCTP_INP_WUNLOCK(inp);
2873                         break;
2874                 }
2875         case SCTP_AUTH_KEY:
2876                 {
2877                         struct sctp_authkey *sca;
2878                         struct sctp_keyhead *shared_keys;
2879                         sctp_sharedkey_t *shared_key;
2880                         sctp_key_t *key = NULL;
2881                         size_t size;
2882
2883                         SCTP_CHECK_AND_CAST(sca, optval, struct sctp_authkey, optsize);
2884                         SCTP_FIND_STCB(inp, stcb, sca->sca_assoc_id);
2885                         size = optsize - sizeof(*sca);
2886
2887                         if (stcb) {
2888                                 /* set it on the assoc */
2889                                 shared_keys = &stcb->asoc.shared_keys;
2890                                 /* clear the cached keys for this key id */
2891                                 sctp_clear_cachedkeys(stcb, sca->sca_keynumber);
2892                                 /*
2893                                  * create the new shared key and
2894                                  * insert/replace it
2895                                  */
2896                                 if (size > 0) {
2897                                         key = sctp_set_key(sca->sca_key, (uint32_t) size);
2898                                         if (key == NULL) {
2899                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
2900                                                 error = ENOMEM;
2901                                                 SCTP_TCB_UNLOCK(stcb);
2902                                                 break;
2903                                         }
2904                                 }
2905                                 shared_key = sctp_alloc_sharedkey();
2906                                 if (shared_key == NULL) {
2907                                         sctp_free_key(key);
2908                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
2909                                         error = ENOMEM;
2910                                         SCTP_TCB_UNLOCK(stcb);
2911                                         break;
2912                                 }
2913                                 shared_key->key = key;
2914                                 shared_key->keyid = sca->sca_keynumber;
2915                                 sctp_insert_sharedkey(shared_keys, shared_key);
2916                                 SCTP_TCB_UNLOCK(stcb);
2917                         } else {
2918                                 /* set it on the endpoint */
2919                                 SCTP_INP_WLOCK(inp);
2920                                 shared_keys = &inp->sctp_ep.shared_keys;
2921                                 /*
2922                                  * clear the cached keys on all assocs for
2923                                  * this key id
2924                                  */
2925                                 sctp_clear_cachedkeys_ep(inp, sca->sca_keynumber);
2926                                 /*
2927                                  * create the new shared key and
2928                                  * insert/replace it
2929                                  */
2930                                 if (size > 0) {
2931                                         key = sctp_set_key(sca->sca_key, (uint32_t) size);
2932                                         if (key == NULL) {
2933                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
2934                                                 error = ENOMEM;
2935                                                 SCTP_INP_WUNLOCK(inp);
2936                                                 break;
2937                                         }
2938                                 }
2939                                 shared_key = sctp_alloc_sharedkey();
2940                                 if (shared_key == NULL) {
2941                                         sctp_free_key(key);
2942                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
2943                                         error = ENOMEM;
2944                                         SCTP_INP_WUNLOCK(inp);
2945                                         break;
2946                                 }
2947                                 shared_key->key = key;
2948                                 shared_key->keyid = sca->sca_keynumber;
2949                                 sctp_insert_sharedkey(shared_keys, shared_key);
2950                                 SCTP_INP_WUNLOCK(inp);
2951                         }
2952                         break;
2953                 }
2954         case SCTP_HMAC_IDENT:
2955                 {
2956                         struct sctp_hmacalgo *shmac;
2957                         sctp_hmaclist_t *hmaclist;
2958                         uint32_t hmacid;
2959                         size_t size, i, found;
2960
2961                         SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, optsize);
2962                         size = (optsize - sizeof(*shmac)) / sizeof(shmac->shmac_idents[0]);
2963                         hmaclist = sctp_alloc_hmaclist(size);
2964                         if (hmaclist == NULL) {
2965                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
2966                                 error = ENOMEM;
2967                                 break;
2968                         }
2969                         for (i = 0; i < size; i++) {
2970                                 hmacid = shmac->shmac_idents[i];
2971                                 if (sctp_auth_add_hmacid(hmaclist, (uint16_t) hmacid)) {
2972                                          /* invalid HMACs were found */ ;
2973                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2974                                         error = EINVAL;
2975                                         sctp_free_hmaclist(hmaclist);
2976                                         goto sctp_set_hmac_done;
2977                                 }
2978                         }
2979                         found = 0;
2980                         for (i = 0; i < hmaclist->num_algo; i++) {
2981                                 if (hmaclist->hmac[i] == SCTP_AUTH_HMAC_ID_SHA1) {
2982                                         /* already in list */
2983                                         found = 1;
2984                                 }
2985                         }
2986                         if (!found) {
2987                                 sctp_free_hmaclist(hmaclist);
2988                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2989                                 error = EINVAL;
2990                                 break;
2991                         }
2992                         /* set it on the endpoint */
2993                         SCTP_INP_WLOCK(inp);
2994                         if (inp->sctp_ep.local_hmacs)
2995                                 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
2996                         inp->sctp_ep.local_hmacs = hmaclist;
2997                         SCTP_INP_WUNLOCK(inp);
2998         sctp_set_hmac_done:
2999                         break;
3000                 }
3001         case SCTP_AUTH_ACTIVE_KEY:
3002                 {
3003                         struct sctp_authkeyid *scact;
3004
3005                         SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, optsize);
3006                         SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id);
3007
3008                         /* set the active key on the right place */
3009                         if (stcb) {
3010                                 /* set the active key on the assoc */
3011                                 if (sctp_auth_setactivekey(stcb, scact->scact_keynumber)) {
3012                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3013                                         error = EINVAL;
3014                                 }
3015                                 SCTP_TCB_UNLOCK(stcb);
3016                         } else {
3017                                 /* set the active key on the endpoint */
3018                                 SCTP_INP_WLOCK(inp);
3019                                 if (sctp_auth_setactivekey_ep(inp, scact->scact_keynumber)) {
3020                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3021                                         error = EINVAL;
3022                                 }
3023                                 SCTP_INP_WUNLOCK(inp);
3024                         }
3025                         break;
3026                 }
3027         case SCTP_AUTH_DELETE_KEY:
3028                 {
3029                         struct sctp_authkeyid *scdel;
3030
3031                         SCTP_CHECK_AND_CAST(scdel, optval, struct sctp_authkeyid, optsize);
3032                         SCTP_FIND_STCB(inp, stcb, scdel->scact_assoc_id);
3033
3034                         /* delete the key from the right place */
3035                         if (stcb) {
3036                                 if (sctp_delete_sharedkey(stcb, scdel->scact_keynumber)) {
3037                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3038                                         error = EINVAL;
3039                                 }
3040                                 SCTP_TCB_UNLOCK(stcb);
3041                         } else {
3042                                 SCTP_INP_WLOCK(inp);
3043                                 if (sctp_delete_sharedkey_ep(inp, scdel->scact_keynumber)) {
3044                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3045                                         error = EINVAL;
3046                                 }
3047                                 SCTP_INP_WUNLOCK(inp);
3048                         }
3049                         break;
3050                 }
3051
3052         case SCTP_RESET_STREAMS:
3053                 {
3054                         struct sctp_stream_reset *strrst;
3055                         uint8_t send_in = 0, send_tsn = 0, send_out = 0;
3056                         int i;
3057
3058                         SCTP_CHECK_AND_CAST(strrst, optval, struct sctp_stream_reset, optsize);
3059                         SCTP_FIND_STCB(inp, stcb, strrst->strrst_assoc_id);
3060
3061                         if (stcb == NULL) {
3062                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
3063                                 error = ENOENT;
3064                                 break;
3065                         }
3066                         if (stcb->asoc.peer_supports_strreset == 0) {
3067                                 /*
3068                                  * Peer does not support it, we return
3069                                  * protocol not supported since this is true
3070                                  * for this feature and this peer, not the
3071                                  * socket request in general.
3072                                  */
3073                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EPROTONOSUPPORT);
3074                                 error = EPROTONOSUPPORT;
3075                                 SCTP_TCB_UNLOCK(stcb);
3076                                 break;
3077                         }
3078                         if (stcb->asoc.stream_reset_outstanding) {
3079                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
3080                                 error = EALREADY;
3081                                 SCTP_TCB_UNLOCK(stcb);
3082                                 break;
3083                         }
3084                         if (strrst->strrst_flags == SCTP_RESET_LOCAL_RECV) {
3085                                 send_in = 1;
3086                         } else if (strrst->strrst_flags == SCTP_RESET_LOCAL_SEND) {
3087                                 send_out = 1;
3088                         } else if (strrst->strrst_flags == SCTP_RESET_BOTH) {
3089                                 send_in = 1;
3090                                 send_out = 1;
3091                         } else if (strrst->strrst_flags == SCTP_RESET_TSN) {
3092                                 send_tsn = 1;
3093                         } else {
3094                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3095                                 error = EINVAL;
3096                                 SCTP_TCB_UNLOCK(stcb);
3097                                 break;
3098                         }
3099                         for (i = 0; i < strrst->strrst_num_streams; i++) {
3100                                 if ((send_in) &&
3101
3102                                     (strrst->strrst_list[i] > stcb->asoc.streamincnt)) {
3103                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3104                                         error = EINVAL;
3105                                         goto get_out;
3106                                 }
3107                                 if ((send_out) &&
3108                                     (strrst->strrst_list[i] > stcb->asoc.streamoutcnt)) {
3109                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3110                                         error = EINVAL;
3111                                         goto get_out;
3112                                 }
3113                         }
3114                         if (error) {
3115                 get_out:
3116                                 SCTP_TCB_UNLOCK(stcb);
3117                                 break;
3118                         }
3119                         error = sctp_send_str_reset_req(stcb, strrst->strrst_num_streams,
3120                             strrst->strrst_list,
3121                             send_out, (stcb->asoc.str_reset_seq_in - 3),
3122                             send_in, send_tsn);
3123
3124                         sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_REQ, SCTP_SO_LOCKED);
3125                         SCTP_TCB_UNLOCK(stcb);
3126                 }
3127                 break;
3128
3129         case SCTP_CONNECT_X:
3130                 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) {
3131                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3132                         error = EINVAL;
3133                         break;
3134                 }
3135                 error = sctp_do_connect_x(so, inp, optval, optsize, p, 0);
3136                 break;
3137
3138         case SCTP_CONNECT_X_DELAYED:
3139                 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) {
3140                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3141                         error = EINVAL;
3142                         break;
3143                 }
3144                 error = sctp_do_connect_x(so, inp, optval, optsize, p, 1);
3145                 break;
3146
3147         case SCTP_CONNECT_X_COMPLETE:
3148                 {
3149                         struct sockaddr *sa;
3150                         struct sctp_nets *net;
3151
3152                         /* FIXME MT: check correct? */
3153                         SCTP_CHECK_AND_CAST(sa, optval, struct sockaddr, optsize);
3154
3155                         /* find tcb */
3156                         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
3157                                 SCTP_INP_RLOCK(inp);
3158                                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
3159                                 if (stcb) {
3160                                         SCTP_TCB_LOCK(stcb);
3161                                         net = sctp_findnet(stcb, sa);
3162                                 }
3163                                 SCTP_INP_RUNLOCK(inp);
3164                         } else {
3165                                 /*
3166                                  * We increment here since
3167                                  * sctp_findassociation_ep_addr() wil do a
3168                                  * decrement if it finds the stcb as long as
3169                                  * the locked tcb (last argument) is NOT a
3170                                  * TCB.. aka NULL.
3171                                  */
3172                                 SCTP_INP_INCR_REF(inp);
3173                                 stcb = sctp_findassociation_ep_addr(&inp, sa, &net, NULL, NULL);
3174                                 if (stcb == NULL) {
3175                                         SCTP_INP_DECR_REF(inp);
3176                                 }
3177                         }
3178
3179                         if (stcb == NULL) {
3180                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
3181                                 error = ENOENT;
3182                                 break;
3183                         }
3184                         if (stcb->asoc.delayed_connection == 1) {
3185                                 stcb->asoc.delayed_connection = 0;
3186                                 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
3187                                 sctp_timer_stop(SCTP_TIMER_TYPE_INIT, inp, stcb,
3188                                     stcb->asoc.primary_destination,
3189                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_9);
3190                                 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
3191                         } else {
3192                                 /*
3193                                  * already expired or did not use delayed
3194                                  * connectx
3195                                  */
3196                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
3197                                 error = EALREADY;
3198                         }
3199                         SCTP_TCB_UNLOCK(stcb);
3200                 }
3201                 break;
3202         case SCTP_MAX_BURST:
3203                 {
3204                         uint8_t *burst;
3205
3206                         SCTP_CHECK_AND_CAST(burst, optval, uint8_t, optsize);
3207
3208                         SCTP_INP_WLOCK(inp);
3209                         if (*burst) {
3210                                 inp->sctp_ep.max_burst = *burst;
3211                         }
3212                         SCTP_INP_WUNLOCK(inp);
3213                 }
3214                 break;
3215         case SCTP_MAXSEG:
3216                 {
3217                         struct sctp_assoc_value *av;
3218                         int ovh;
3219
3220                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
3221                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
3222
3223                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
3224                                 ovh = SCTP_MED_OVERHEAD;
3225                         } else {
3226                                 ovh = SCTP_MED_V4_OVERHEAD;
3227                         }
3228                         if (stcb) {
3229                                 if (av->assoc_value) {
3230                                         stcb->asoc.sctp_frag_point = (av->assoc_value + ovh);
3231                                 } else {
3232                                         stcb->asoc.sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
3233                                 }
3234                                 SCTP_TCB_UNLOCK(stcb);
3235                         } else {
3236                                 SCTP_INP_WLOCK(inp);
3237                                 /*
3238                                  * FIXME MT: I think this is not in tune
3239                                  * with the API ID
3240                                  */
3241                                 if (av->assoc_value) {
3242                                         inp->sctp_frag_point = (av->assoc_value + ovh);
3243                                 } else {
3244                                         inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
3245                                 }
3246                                 SCTP_INP_WUNLOCK(inp);
3247                         }
3248                 }
3249                 break;
3250         case SCTP_EVENTS:
3251                 {
3252                         struct sctp_event_subscribe *events;
3253
3254                         SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, optsize);
3255
3256                         SCTP_INP_WLOCK(inp);
3257                         if (events->sctp_data_io_event) {
3258                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
3259                         } else {
3260                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
3261                         }
3262
3263                         if (events->sctp_association_event) {
3264                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
3265                         } else {
3266                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
3267                         }
3268
3269                         if (events->sctp_address_event) {
3270                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
3271                         } else {
3272                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
3273                         }
3274
3275                         if (events->sctp_send_failure_event) {
3276                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
3277                         } else {
3278                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
3279                         }
3280
3281                         if (events->sctp_peer_error_event) {
3282                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR);
3283                         } else {
3284                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPEERERR);
3285                         }
3286
3287                         if (events->sctp_shutdown_event) {
3288                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
3289                         } else {
3290                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
3291                         }
3292
3293                         if (events->sctp_partial_delivery_event) {
3294                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
3295                         } else {
3296                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
3297                         }
3298
3299                         if (events->sctp_adaptation_layer_event) {
3300                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
3301                         } else {
3302                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
3303                         }
3304
3305                         if (events->sctp_authentication_event) {
3306                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT);
3307                         } else {
3308                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTHEVNT);
3309                         }
3310
3311                         if (events->sctp_stream_reset_events) {
3312                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
3313                         } else {
3314                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
3315                         }
3316                         SCTP_INP_WUNLOCK(inp);
3317                 }
3318                 break;
3319
3320         case SCTP_ADAPTATION_LAYER:
3321                 {
3322                         struct sctp_setadaptation *adap_bits;
3323
3324                         SCTP_CHECK_AND_CAST(adap_bits, optval, struct sctp_setadaptation, optsize);
3325                         SCTP_INP_WLOCK(inp);
3326                         inp->sctp_ep.adaptation_layer_indicator = adap_bits->ssb_adaptation_ind;
3327                         SCTP_INP_WUNLOCK(inp);
3328                 }
3329                 break;
3330 #ifdef SCTP_DEBUG
3331         case SCTP_SET_INITIAL_DBG_SEQ:
3332                 {
3333                         uint32_t *vvv;
3334
3335                         SCTP_CHECK_AND_CAST(vvv, optval, uint32_t, optsize);
3336                         SCTP_INP_WLOCK(inp);
3337                         inp->sctp_ep.initial_sequence_debug = *vvv;
3338                         SCTP_INP_WUNLOCK(inp);
3339                 }
3340                 break;
3341 #endif
3342         case SCTP_DEFAULT_SEND_PARAM:
3343                 {
3344                         struct sctp_sndrcvinfo *s_info;
3345
3346                         SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, optsize);
3347                         SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id);
3348
3349                         if (stcb) {
3350                                 if (s_info->sinfo_stream <= stcb->asoc.streamoutcnt) {
3351                                         memcpy(&stcb->asoc.def_send, s_info, min(optsize, sizeof(stcb->asoc.def_send)));
3352                                 } else {
3353                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3354                                         error = EINVAL;
3355                                 }
3356                                 SCTP_TCB_UNLOCK(stcb);
3357                         } else {
3358                                 SCTP_INP_WLOCK(inp);
3359                                 memcpy(&inp->def_send, s_info, min(optsize, sizeof(inp->def_send)));
3360                                 SCTP_INP_WUNLOCK(inp);
3361                         }
3362                 }
3363                 break;
3364         case SCTP_PEER_ADDR_PARAMS:
3365                 /* Applys to the specific association */
3366                 {
3367                         struct sctp_paddrparams *paddrp;
3368                         struct sctp_nets *net;
3369
3370                         SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, optsize);
3371                         SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id);
3372                         net = NULL;
3373                         if (stcb) {
3374                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address);
3375                         } else {
3376                                 /*
3377                                  * We increment here since
3378                                  * sctp_findassociation_ep_addr() wil do a
3379                                  * decrement if it finds the stcb as long as
3380                                  * the locked tcb (last argument) is NOT a
3381                                  * TCB.. aka NULL.
3382                                  */
3383                                 SCTP_INP_INCR_REF(inp);
3384                                 stcb = sctp_findassociation_ep_addr(&inp,
3385                                     (struct sockaddr *)&paddrp->spp_address,
3386                                     &net, NULL, NULL);
3387                                 if (stcb == NULL) {
3388                                         SCTP_INP_DECR_REF(inp);
3389                                 }
3390                         }
3391                         if (stcb && (net == NULL)) {
3392                                 struct sockaddr *sa;
3393
3394                                 sa = (struct sockaddr *)&paddrp->spp_address;
3395                                 if (sa->sa_family == AF_INET) {
3396                                         struct sockaddr_in *sin;
3397
3398                                         sin = (struct sockaddr_in *)sa;
3399                                         if (sin->sin_addr.s_addr) {
3400                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3401                                                 SCTP_TCB_UNLOCK(stcb);
3402                                                 error = EINVAL;
3403                                                 break;
3404                                         }
3405                                 } else if (sa->sa_family == AF_INET6) {
3406                                         struct sockaddr_in6 *sin6;
3407
3408                                         sin6 = (struct sockaddr_in6 *)sa;
3409                                         if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3410                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3411                                                 SCTP_TCB_UNLOCK(stcb);
3412                                                 error = EINVAL;
3413                                                 break;
3414                                         }
3415                                 } else {
3416                                         error = EAFNOSUPPORT;
3417                                         SCTP_TCB_UNLOCK(stcb);
3418                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
3419                                         break;
3420                                 }
3421                         }
3422                         /* sanity checks */
3423                         if ((paddrp->spp_flags & SPP_HB_ENABLE) && (paddrp->spp_flags & SPP_HB_DISABLE)) {
3424                                 if (stcb)
3425                                         SCTP_TCB_UNLOCK(stcb);
3426                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3427                                 return (EINVAL);
3428                         }
3429                         if ((paddrp->spp_flags & SPP_PMTUD_ENABLE) && (paddrp->spp_flags & SPP_PMTUD_DISABLE)) {
3430                                 if (stcb)
3431                                         SCTP_TCB_UNLOCK(stcb);
3432                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3433                                 return (EINVAL);
3434                         }
3435                         if (stcb) {
3436                                 /************************TCB SPECIFIC SET ******************/
3437                                 /*
3438                                  * do we change the timer for HB, we run
3439                                  * only one?
3440                                  */
3441                                 int ovh = 0;
3442
3443                                 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
3444                                         ovh = SCTP_MED_OVERHEAD;
3445                                 } else {
3446                                         ovh = SCTP_MED_V4_OVERHEAD;
3447                                 }
3448
3449                                 if (paddrp->spp_hbinterval)
3450                                         stcb->asoc.heart_beat_delay = paddrp->spp_hbinterval;
3451                                 else if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO)
3452                                         stcb->asoc.heart_beat_delay = 0;
3453
3454                                 /* network sets ? */
3455                                 if (net) {
3456                                         /************************NET SPECIFIC SET ******************/
3457                                         if (paddrp->spp_flags & SPP_HB_DEMAND) {
3458                                                 /* on demand HB */
3459                                                 if (sctp_send_hb(stcb, 1, net) < 0) {
3460                                                         /* asoc destroyed */
3461                                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3462                                                         error = EINVAL;
3463                                                         break;
3464                                                 }
3465                                         }
3466                                         if (paddrp->spp_flags & SPP_HB_DISABLE) {
3467                                                 net->dest_state |= SCTP_ADDR_NOHB;
3468                                         }
3469                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3470                                                 net->dest_state &= ~SCTP_ADDR_NOHB;
3471                                         }
3472                                         if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && (paddrp->spp_pathmtu >= SCTP_SMALLEST_PMTU)) {
3473                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3474                                                         sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
3475                                                             SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10);
3476                                                 }
3477                                                 if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) {
3478                                                         net->mtu = paddrp->spp_pathmtu + ovh;
3479                                                         if (net->mtu < stcb->asoc.smallest_mtu) {
3480 #ifdef SCTP_PRINT_FOR_B_AND_M
3481                                                                 SCTP_PRINTF("SCTP_PMTU_DISABLE calls sctp_pathmtu_adjustment:%d\n",
3482                                                                     net->mtu);
3483 #endif
3484                                                                 sctp_pathmtu_adjustment(inp, stcb, net, net->mtu);
3485                                                         }
3486                                                 }
3487                                         }
3488                                         if (paddrp->spp_flags & SPP_PMTUD_ENABLE) {
3489                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3490                                                         sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
3491                                                 }
3492                                         }
3493                                         if (paddrp->spp_pathmaxrxt)
3494                                                 net->failure_threshold = paddrp->spp_pathmaxrxt;
3495 #ifdef INET
3496                                         if (paddrp->spp_flags & SPP_IPV4_TOS) {
3497                                                 if (net->ro._l_addr.sin.sin_family == AF_INET) {
3498                                                         net->tos_flowlabel = paddrp->spp_ipv4_tos & 0x000000fc;
3499                                                 }
3500                                         }
3501 #endif
3502 #ifdef INET6
3503                                         if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL) {
3504                                                 if (net->ro._l_addr.sin6.sin6_family == AF_INET6) {
3505                                                         net->tos_flowlabel = paddrp->spp_ipv6_flowlabel;
3506                                                 }
3507                                         }
3508 #endif
3509                                 } else {
3510                                         /************************ASSOC ONLY -- NO NET SPECIFIC SET ******************/
3511                                         if (paddrp->spp_pathmaxrxt)
3512                                                 stcb->asoc.def_net_failure = paddrp->spp_pathmaxrxt;
3513
3514                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3515                                                 /* Turn back on the timer */
3516                                                 stcb->asoc.hb_is_disabled = 0;
3517                                                 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
3518                                         }
3519                                         if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && (paddrp->spp_pathmtu >= SCTP_SMALLEST_PMTU)) {
3520                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3521                                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3522                                                                 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
3523                                                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10);
3524                                                         }
3525                                                         if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) {
3526                                                                 net->mtu = paddrp->spp_pathmtu + ovh;
3527                                                                 if (net->mtu < stcb->asoc.smallest_mtu) {
3528 #ifdef SCTP_PRINT_FOR_B_AND_M
3529                                                                         SCTP_PRINTF("SCTP_PMTU_DISABLE calls sctp_pathmtu_adjustment:%d\n",
3530                                                                             net->mtu);
3531 #endif
3532                                                                         sctp_pathmtu_adjustment(inp, stcb, net, net->mtu);
3533                                                                 }
3534                                                         }
3535                                                 }
3536                                         }
3537                                         if (paddrp->spp_flags & SPP_PMTUD_ENABLE) {
3538                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3539                                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3540                                                                 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
3541                                                         }
3542                                                 }
3543                                         }
3544                                         if (paddrp->spp_flags & SPP_HB_DISABLE) {
3545                                                 int cnt_of_unconf = 0;
3546                                                 struct sctp_nets *lnet;
3547
3548                                                 stcb->asoc.hb_is_disabled = 1;
3549                                                 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
3550                                                         if (lnet->dest_state & SCTP_ADDR_UNCONFIRMED) {
3551                                                                 cnt_of_unconf++;
3552                                                         }
3553                                                 }
3554                                                 /*
3555                                                  * stop the timer ONLY if we
3556                                                  * have no unconfirmed
3557                                                  * addresses
3558                                                  */
3559                                                 if (cnt_of_unconf == 0) {
3560                                                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3561                                                                 sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net,
3562                                                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_11);
3563                                                         }
3564                                                 }
3565                                         }
3566                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3567                                                 /* start up the timer. */
3568                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3569                                                         sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
3570                                                 }
3571                                         }
3572 #ifdef INET
3573                                         if (paddrp->spp_flags & SPP_IPV4_TOS)
3574                                                 stcb->asoc.default_tos = paddrp->spp_ipv4_tos & 0x000000fc;
3575 #endif
3576 #ifdef INET6
3577                                         if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL)
3578                                                 stcb->asoc.default_flowlabel = paddrp->spp_ipv6_flowlabel;
3579 #endif
3580
3581                                 }
3582                                 SCTP_TCB_UNLOCK(stcb);
3583                         } else {
3584                                 /************************NO TCB, SET TO default stuff ******************/
3585                                 SCTP_INP_WLOCK(inp);
3586                                 /*
3587                                  * For the TOS/FLOWLABEL stuff you set it
3588                                  * with the options on the socket
3589                                  */
3590                                 if (paddrp->spp_pathmaxrxt) {
3591                                         inp->sctp_ep.def_net_failure = paddrp->spp_pathmaxrxt;
3592                                 }
3593                                 if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO)
3594                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = 0;
3595                                 else if (paddrp->spp_hbinterval) {
3596                                         if (paddrp->spp_hbinterval > SCTP_MAX_HB_INTERVAL)
3597                                                 paddrp->spp_hbinterval = SCTP_MAX_HB_INTERVAL;
3598                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(paddrp->spp_hbinterval);
3599                                 }
3600                                 if (paddrp->spp_flags & SPP_HB_ENABLE) {
3601                                         sctp_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
3602
3603                                 } else if (paddrp->spp_flags & SPP_HB_DISABLE) {
3604                                         sctp_feature_on(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
3605                                 }
3606                                 SCTP_INP_WUNLOCK(inp);
3607                         }
3608                 }
3609                 break;
3610         case SCTP_RTOINFO:
3611                 {
3612                         struct sctp_rtoinfo *srto;
3613                         uint32_t new_init, new_min, new_max;
3614
3615                         SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, optsize);
3616                         SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id);
3617
3618                         if (stcb) {
3619                                 if (srto->srto_initial)
3620                                         new_init = srto->srto_initial;
3621                                 else
3622                                         new_init = stcb->asoc.initial_rto;
3623                                 if (srto->srto_max)
3624                                         new_max = srto->srto_max;
3625                                 else
3626                                         new_max = stcb->asoc.maxrto;
3627                                 if (srto->srto_min)
3628                                         new_min = srto->srto_min;
3629                                 else
3630                                         new_min = stcb->asoc.minrto;
3631                                 if ((new_min <= new_init) && (new_init <= new_max)) {
3632                                         stcb->asoc.initial_rto = new_init;
3633                                         stcb->asoc.maxrto = new_max;
3634                                         stcb->asoc.minrto = new_min;
3635                                 } else {
3636                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EDOM);
3637                                         error = EDOM;
3638                                 }
3639                                 SCTP_TCB_UNLOCK(stcb);
3640                         } else {
3641                                 SCTP_INP_WLOCK(inp);
3642                                 if (srto->srto_initial)
3643                                         new_init = srto->srto_initial;
3644                                 else
3645                                         new_init = inp->sctp_ep.initial_rto;
3646                                 if (srto->srto_max)
3647                                         new_max = srto->srto_max;
3648                                 else
3649                                         new_max = inp->sctp_ep.sctp_maxrto;
3650                                 if (srto->srto_min)
3651                                         new_min = srto->srto_min;
3652                                 else
3653                                         new_min = inp->sctp_ep.sctp_minrto;
3654                                 if ((new_min <= new_init) && (new_init <= new_max)) {
3655                                         inp->sctp_ep.initial_rto = new_init;
3656                                         inp->sctp_ep.sctp_maxrto = new_max;
3657                                         inp->sctp_ep.sctp_minrto = new_min;
3658                                 } else {
3659                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EDOM);
3660                                         error = EDOM;
3661                                 }
3662                                 SCTP_INP_WUNLOCK(inp);
3663                         }
3664                 }
3665                 break;
3666         case SCTP_ASSOCINFO:
3667                 {
3668                         struct sctp_assocparams *sasoc;
3669
3670                         SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, optsize);
3671                         SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id);
3672                         if (sasoc->sasoc_cookie_life) {
3673                                 /* boundary check the cookie life */
3674                                 if (sasoc->sasoc_cookie_life < 1000)
3675                                         sasoc->sasoc_cookie_life = 1000;
3676                                 if (sasoc->sasoc_cookie_life > SCTP_MAX_COOKIE_LIFE) {
3677                                         sasoc->sasoc_cookie_life = SCTP_MAX_COOKIE_LIFE;
3678                                 }
3679                         }
3680                         if (stcb) {
3681                                 if (sasoc->sasoc_asocmaxrxt)
3682                                         stcb->asoc.max_send_times = sasoc->sasoc_asocmaxrxt;
3683                                 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets;
3684                                 sasoc->sasoc_peer_rwnd = 0;
3685                                 sasoc->sasoc_local_rwnd = 0;
3686                                 if (sasoc->sasoc_cookie_life) {
3687                                         stcb->asoc.cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life);
3688                                 }
3689                                 SCTP_TCB_UNLOCK(stcb);
3690                         } else {
3691                                 SCTP_INP_WLOCK(inp);
3692                                 if (sasoc->sasoc_asocmaxrxt)
3693                                         inp->sctp_ep.max_send_times = sasoc->sasoc_asocmaxrxt;
3694                                 sasoc->sasoc_number_peer_destinations = 0;
3695                                 sasoc->sasoc_peer_rwnd = 0;
3696                                 sasoc->sasoc_local_rwnd = 0;
3697                                 if (sasoc->sasoc_cookie_life) {
3698                                         inp->sctp_ep.def_cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life);
3699                                 }
3700                                 SCTP_INP_WUNLOCK(inp);
3701                         }
3702                 }
3703                 break;
3704         case SCTP_INITMSG:
3705                 {
3706                         struct sctp_initmsg *sinit;
3707
3708                         SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, optsize);
3709                         SCTP_INP_WLOCK(inp);
3710                         if (sinit->sinit_num_ostreams)
3711                                 inp->sctp_ep.pre_open_stream_count = sinit->sinit_num_ostreams;
3712
3713                         if (sinit->sinit_max_instreams)
3714                                 inp->sctp_ep.max_open_streams_intome = sinit->sinit_max_instreams;
3715
3716                         if (sinit->sinit_max_attempts)
3717                                 inp->sctp_ep.max_init_times = sinit->sinit_max_attempts;
3718
3719                         if (sinit->sinit_max_init_timeo)
3720                                 inp->sctp_ep.initial_init_rto_max = sinit->sinit_max_init_timeo;
3721                         SCTP_INP_WUNLOCK(inp);
3722                 }
3723                 break;
3724         case SCTP_PRIMARY_ADDR:
3725                 {
3726                         struct sctp_setprim *spa;
3727                         struct sctp_nets *net, *lnet;
3728
3729                         SCTP_CHECK_AND_CAST(spa, optval, struct sctp_setprim, optsize);
3730                         SCTP_FIND_STCB(inp, stcb, spa->ssp_assoc_id);
3731
3732                         net = NULL;
3733                         if (stcb) {
3734                                 net = sctp_findnet(stcb, (struct sockaddr *)&spa->ssp_addr);
3735                         } else {
3736                                 /*
3737                                  * We increment here since
3738                                  * sctp_findassociation_ep_addr() wil do a
3739                                  * decrement if it finds the stcb as long as
3740                                  * the locked tcb (last argument) is NOT a
3741                                  * TCB.. aka NULL.
3742                                  */
3743                                 SCTP_INP_INCR_REF(inp);
3744                                 stcb = sctp_findassociation_ep_addr(&inp,
3745                                     (struct sockaddr *)&spa->ssp_addr,
3746                                     &net, NULL, NULL);
3747                                 if (stcb == NULL) {
3748                                         SCTP_INP_DECR_REF(inp);
3749                                 }
3750                         }
3751
3752                         if ((stcb) && (net)) {
3753                                 if ((net != stcb->asoc.primary_destination) &&
3754                                     (!(net->dest_state & SCTP_ADDR_UNCONFIRMED))) {
3755                                         /* Ok we need to set it */
3756                                         lnet = stcb->asoc.primary_destination;
3757                                         if (sctp_set_primary_addr(stcb, (struct sockaddr *)NULL, net) == 0) {
3758                                                 if (net->dest_state & SCTP_ADDR_SWITCH_PRIMARY) {
3759                                                         net->dest_state |= SCTP_ADDR_DOUBLE_SWITCH;
3760                                                 }
3761                                                 net->dest_state |= SCTP_ADDR_SWITCH_PRIMARY;
3762                                         }
3763                                 }
3764                         } else {
3765                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3766                                 error = EINVAL;
3767                         }
3768                         if (stcb) {
3769                                 SCTP_TCB_UNLOCK(stcb);
3770                         }
3771                 }
3772                 break;
3773         case SCTP_SET_DYNAMIC_PRIMARY:
3774                 {
3775                         union sctp_sockstore *ss;
3776
3777                         error = priv_check(curthread,
3778                             PRIV_NETINET_RESERVEDPORT);
3779                         if (error)
3780                                 break;
3781
3782                         SCTP_CHECK_AND_CAST(ss, optval, union sctp_sockstore, optsize);
3783                         /* SUPER USER CHECK? */
3784                         error = sctp_dynamic_set_primary(&ss->sa, vrf_id);
3785                 }
3786                 break;
3787         case SCTP_SET_PEER_PRIMARY_ADDR:
3788                 {
3789                         struct sctp_setpeerprim *sspp;
3790
3791                         SCTP_CHECK_AND_CAST(sspp, optval, struct sctp_setpeerprim, optsize);
3792                         SCTP_FIND_STCB(inp, stcb, sspp->sspp_assoc_id);
3793                         if (stcb != NULL) {
3794                                 struct sctp_ifa *ifa;
3795
3796                                 ifa = sctp_find_ifa_by_addr((struct sockaddr *)&sspp->sspp_addr,
3797                                     stcb->asoc.vrf_id, SCTP_ADDR_NOT_LOCKED);
3798                                 if (ifa == NULL) {
3799                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3800                                         error = EINVAL;
3801                                         goto out_of_it;
3802                                 }
3803                                 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
3804                                         /*
3805                                          * Must validate the ifa found is in
3806                                          * our ep
3807                                          */
3808                                         struct sctp_laddr *laddr;
3809                                         int found = 0;
3810
3811                                         LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
3812                                                 if (laddr->ifa == NULL) {
3813                                                         SCTPDBG(SCTP_DEBUG_OUTPUT1, "%s: NULL ifa\n",
3814                                                             __FUNCTION__);
3815                                                         continue;
3816                                                 }
3817                                                 if (laddr->ifa == ifa) {
3818                                                         found = 1;
3819                                                         break;
3820                                                 }
3821                                         }
3822                                         if (!found) {
3823                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3824                                                 error = EINVAL;
3825                                                 goto out_of_it;
3826                                         }
3827                                 }
3828                                 if (sctp_set_primary_ip_address_sa(stcb,
3829                                     (struct sockaddr *)&sspp->sspp_addr) != 0) {
3830                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3831                                         error = EINVAL;
3832                                 }
3833                 out_of_it:
3834                                 SCTP_TCB_UNLOCK(stcb);
3835                         } else {
3836                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3837                                 error = EINVAL;
3838                         }
3839
3840                 }
3841                 break;
3842         case SCTP_BINDX_ADD_ADDR:
3843                 {
3844                         struct sctp_getaddresses *addrs;
3845                         size_t sz;
3846                         struct thread *td;
3847                         int prison = 0;
3848
3849                         td = (struct thread *)p;
3850                         if (jailed(td->td_ucred)) {
3851                                 prison = 1;
3852                         }
3853                         SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses,
3854                             optsize);
3855                         if (addrs->addr->sa_family == AF_INET) {
3856                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in);
3857                                 if (optsize < sz) {
3858                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3859                                         error = EINVAL;
3860                                         break;
3861                                 }
3862                                 if (prison && prison_ip(td->td_ucred, 0, &(((struct sockaddr_in *)(addrs->addr))->sin_addr.s_addr))) {
3863                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRNOTAVAIL);
3864                                         error = EADDRNOTAVAIL;
3865                                 }
3866                         } else if (addrs->addr->sa_family == AF_INET6) {
3867                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in6);
3868                                 if (optsize < sz) {
3869                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3870                                         error = EINVAL;
3871                                         break;
3872                                 }
3873                                 /* JAIL XXXX Add else here for V6 */
3874                         }
3875                         sctp_bindx_add_address(so, inp, addrs->addr,
3876                             addrs->sget_assoc_id, vrf_id,
3877                             &error, p);
3878                 }
3879                 break;
3880         case SCTP_BINDX_REM_ADDR:
3881                 {
3882                         struct sctp_getaddresses *addrs;
3883                         size_t sz;
3884                         struct thread *td;
3885                         int prison = 0;
3886
3887                         td = (struct thread *)p;
3888                         if (jailed(td->td_ucred)) {
3889                                 prison = 1;
3890                         }
3891                         SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses, optsize);
3892                         if (addrs->addr->sa_family == AF_INET) {
3893                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in);
3894                                 if (optsize < sz) {
3895                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3896                                         error = EINVAL;
3897                                         break;
3898                                 }
3899                                 if (prison && prison_ip(td->td_ucred, 0, &(((struct sockaddr_in *)(addrs->addr))->sin_addr.s_addr))) {
3900                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRNOTAVAIL);
3901                                         error = EADDRNOTAVAIL;
3902                                 }
3903                         } else if (addrs->addr->sa_family == AF_INET6) {
3904                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in6);
3905                                 if (optsize < sz) {
3906                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3907                                         error = EINVAL;
3908                                         break;
3909                                 }
3910                                 /* JAIL XXXX Add else here for V6 */
3911                         }
3912                         sctp_bindx_delete_address(so, inp, addrs->addr,
3913                             addrs->sget_assoc_id, vrf_id,
3914                             &error);
3915                 }
3916                 break;
3917         default:
3918                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
3919                 error = ENOPROTOOPT;
3920                 break;
3921         }                       /* end switch (opt) */
3922         return (error);
3923 }
3924
3925
3926 int
3927 sctp_ctloutput(struct socket *so, struct sockopt *sopt)
3928 {
3929         void *optval = NULL;
3930         size_t optsize = 0;
3931         struct sctp_inpcb *inp;
3932         void *p;
3933         int error = 0;
3934
3935         inp = (struct sctp_inpcb *)so->so_pcb;
3936         if (inp == 0) {
3937                 /* I made the same as TCP since we are not setup? */
3938                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3939                 return (ECONNRESET);
3940         }
3941         if (sopt->sopt_level != IPPROTO_SCTP) {
3942                 /* wrong proto level... send back up to IP */
3943 #ifdef INET6
3944                 if (INP_CHECK_SOCKAF(so, AF_INET6))
3945                         error = ip6_ctloutput(so, sopt);
3946                 else
3947 #endif                          /* INET6 */
3948                         error = ip_ctloutput(so, sopt);
3949                 return (error);
3950         }
3951         optsize = sopt->sopt_valsize;
3952         if (optsize) {
3953                 SCTP_MALLOC(optval, void *, optsize, SCTP_M_SOCKOPT);
3954                 if (optval == NULL) {
3955                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOBUFS);
3956                         return (ENOBUFS);
3957                 }
3958                 error = sooptcopyin(sopt, optval, optsize, optsize);
3959                 if (error) {
3960                         SCTP_FREE(optval, SCTP_M_SOCKOPT);
3961                         goto out;
3962                 }
3963         }
3964         p = (void *)sopt->sopt_td;
3965         if (sopt->sopt_dir == SOPT_SET) {
3966                 error = sctp_setopt(so, sopt->sopt_name, optval, optsize, p);
3967         } else if (sopt->sopt_dir == SOPT_GET) {
3968                 error = sctp_getopt(so, sopt->sopt_name, optval, &optsize, p);
3969         } else {
3970                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3971                 error = EINVAL;
3972         }
3973         if ((error == 0) && (optval != NULL)) {
3974                 error = sooptcopyout(sopt, optval, optsize);
3975                 SCTP_FREE(optval, SCTP_M_SOCKOPT);
3976         } else if (optval != NULL) {
3977                 SCTP_FREE(optval, SCTP_M_SOCKOPT);
3978         }
3979 out:
3980         return (error);
3981 }
3982
3983
3984 static int
3985 sctp_connect(struct socket *so, struct sockaddr *addr, struct thread *p)
3986 {
3987         int error = 0;
3988         int create_lock_on = 0;
3989         uint32_t vrf_id;
3990         struct sctp_inpcb *inp;
3991         struct sctp_tcb *stcb = NULL;
3992
3993         inp = (struct sctp_inpcb *)so->so_pcb;
3994         if (inp == 0) {
3995                 /* I made the same as TCP since we are not setup? */
3996                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3997                 return (ECONNRESET);
3998         }
3999         if (addr == NULL) {
4000                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4001                 return EINVAL;
4002         }
4003         if ((addr->sa_family == AF_INET6) && (addr->sa_len != sizeof(struct sockaddr_in6))) {
4004                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4005                 return (EINVAL);
4006         }
4007         if ((addr->sa_family == AF_INET) && (addr->sa_len != sizeof(struct sockaddr_in))) {
4008                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4009                 return (EINVAL);
4010         }
4011         SCTP_ASOC_CREATE_LOCK(inp);
4012         create_lock_on = 1;
4013
4014         SCTP_INP_INCR_REF(inp);
4015         if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4016             (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4017                 /* Should I really unlock ? */
4018                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EFAULT);
4019                 error = EFAULT;
4020                 goto out_now;
4021         }
4022 #ifdef INET6
4023         if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) &&
4024             (addr->sa_family == AF_INET6)) {
4025                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4026                 error = EINVAL;
4027                 goto out_now;
4028         }
4029 #endif                          /* INET6 */
4030         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
4031             SCTP_PCB_FLAGS_UNBOUND) {
4032                 /* Bind a ephemeral port */
4033                 error = sctp_inpcb_bind(so, NULL, NULL, p);
4034                 if (error) {
4035                         goto out_now;
4036                 }
4037         }
4038         /* Now do we connect? */
4039         if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
4040                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4041                 error = EINVAL;
4042                 goto out_now;
4043         }
4044         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
4045             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
4046                 /* We are already connected AND the TCP model */
4047                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
4048                 error = EADDRINUSE;
4049                 goto out_now;
4050         }
4051         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4052                 SCTP_INP_RLOCK(inp);
4053                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
4054                 SCTP_INP_RUNLOCK(inp);
4055         } else {
4056                 /*
4057                  * We increment here since sctp_findassociation_ep_addr()
4058                  * wil do a decrement if it finds the stcb as long as the
4059                  * locked tcb (last argument) is NOT a TCB.. aka NULL.
4060                  */
4061                 SCTP_INP_INCR_REF(inp);
4062                 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL);
4063                 if (stcb == NULL) {
4064                         SCTP_INP_DECR_REF(inp);
4065                 } else {
4066                         SCTP_TCB_LOCK(stcb);
4067                 }
4068         }
4069         if (stcb != NULL) {
4070                 /* Already have or am bring up an association */
4071                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
4072                 error = EALREADY;
4073                 goto out_now;
4074         }
4075         vrf_id = inp->def_vrf_id;
4076         /* We are GOOD to go */
4077         stcb = sctp_aloc_assoc(inp, addr, 1, &error, 0, vrf_id, p);
4078         if (stcb == NULL) {
4079                 /* Gak! no memory */
4080                 goto out_now;
4081         }
4082         if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
4083                 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
4084                 /* Set the connected flag so we can queue data */
4085                 soisconnecting(so);
4086         }
4087         SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_COOKIE_WAIT);
4088         (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
4089
4090         /* initialize authentication parameters for the assoc */
4091         sctp_initialize_auth_params(inp, stcb);
4092
4093         sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
4094         SCTP_TCB_UNLOCK(stcb);
4095 out_now:
4096         if (create_lock_on) {
4097                 SCTP_ASOC_CREATE_UNLOCK(inp);
4098         }
4099         SCTP_INP_DECR_REF(inp);
4100         return error;
4101 }
4102
4103 int
4104 sctp_listen(struct socket *so, int backlog, struct thread *p)
4105 {
4106         /*
4107          * Note this module depends on the protocol processing being called
4108          * AFTER any socket level flags and backlog are applied to the
4109          * socket. The traditional way that the socket flags are applied is
4110          * AFTER protocol processing. We have made a change to the
4111          * sys/kern/uipc_socket.c module to reverse this but this MUST be in
4112          * place if the socket API for SCTP is to work properly.
4113          */
4114
4115         int error = 0;
4116         struct sctp_inpcb *inp;
4117
4118         inp = (struct sctp_inpcb *)so->so_pcb;
4119         if (inp == 0) {
4120                 /* I made the same as TCP since we are not setup? */
4121                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4122                 return (ECONNRESET);
4123         }
4124         SCTP_INP_RLOCK(inp);
4125 #ifdef SCTP_LOCK_LOGGING
4126         if (sctp_logging_level & SCTP_LOCK_LOGGING_ENABLE) {
4127                 sctp_log_lock(inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_SOCK);
4128         }
4129 #endif
4130         SOCK_LOCK(so);
4131         error = solisten_proto_check(so);
4132         if (error) {
4133                 SOCK_UNLOCK(so);
4134                 SCTP_INP_RUNLOCK(inp);
4135                 return (error);
4136         }
4137         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
4138             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
4139                 /* We are already connected AND the TCP model */
4140                 SCTP_INP_RUNLOCK(inp);
4141                 SOCK_UNLOCK(so);
4142                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
4143                 return (EADDRINUSE);
4144         }
4145         if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4146                 /* We must do a bind. */
4147                 SOCK_UNLOCK(so);
4148                 SCTP_INP_RUNLOCK(inp);
4149                 if ((error = sctp_inpcb_bind(so, NULL, NULL, p))) {
4150                         /* bind error, probably perm */
4151                         return (error);
4152                 }
4153                 SOCK_LOCK(so);
4154         } else {
4155                 if (backlog != 0) {
4156                         inp->sctp_flags |= SCTP_PCB_FLAGS_LISTENING;
4157                 } else {
4158                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_LISTENING;
4159                 }
4160                 SCTP_INP_RUNLOCK(inp);
4161         }
4162         /* It appears for 7.0 and on, we must always call this. */
4163         solisten_proto(so, backlog);
4164         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
4165                 /* remove the ACCEPTCONN flag for one-to-many sockets */
4166                 so->so_options &= ~SO_ACCEPTCONN;
4167         }
4168         if (backlog == 0) {
4169                 /* turning off listen */
4170                 so->so_options &= ~SO_ACCEPTCONN;
4171         }
4172         SOCK_UNLOCK(so);
4173         return (error);
4174 }
4175
4176 static int sctp_defered_wakeup_cnt = 0;
4177
4178 int
4179 sctp_accept(struct socket *so, struct sockaddr **addr)
4180 {
4181         struct sctp_tcb *stcb;
4182         struct sctp_inpcb *inp;
4183         union sctp_sockstore store;
4184
4185         int error;
4186
4187         inp = (struct sctp_inpcb *)so->so_pcb;
4188
4189         if (inp == 0) {
4190                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4191                 return (ECONNRESET);
4192         }
4193         SCTP_INP_RLOCK(inp);
4194         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
4195                 SCTP_INP_RUNLOCK(inp);
4196                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
4197                 return (EOPNOTSUPP);
4198         }
4199         if (so->so_state & SS_ISDISCONNECTED) {
4200                 SCTP_INP_RUNLOCK(inp);
4201                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ECONNABORTED);
4202                 return (ECONNABORTED);
4203         }
4204         stcb = LIST_FIRST(&inp->sctp_asoc_list);
4205         if (stcb == NULL) {
4206                 SCTP_INP_RUNLOCK(inp);
4207                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4208                 return (ECONNRESET);
4209         }
4210         SCTP_TCB_LOCK(stcb);
4211         SCTP_INP_RUNLOCK(inp);
4212         store = stcb->asoc.primary_destination->ro._l_addr;
4213         SCTP_TCB_UNLOCK(stcb);
4214         if (store.sa.sa_family == AF_INET) {
4215                 struct sockaddr_in *sin;
4216
4217                 SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
4218                 sin->sin_family = AF_INET;
4219                 sin->sin_len = sizeof(*sin);
4220                 sin->sin_port = ((struct sockaddr_in *)&store)->sin_port;
4221                 sin->sin_addr = ((struct sockaddr_in *)&store)->sin_addr;
4222                 *addr = (struct sockaddr *)sin;
4223         } else {
4224                 struct sockaddr_in6 *sin6;
4225
4226                 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
4227                 sin6->sin6_family = AF_INET6;
4228                 sin6->sin6_len = sizeof(*sin6);
4229                 sin6->sin6_port = ((struct sockaddr_in6 *)&store)->sin6_port;
4230
4231                 sin6->sin6_addr = ((struct sockaddr_in6 *)&store)->sin6_addr;
4232                 if ((error = sa6_recoverscope(sin6)) != 0) {
4233                         SCTP_FREE_SONAME(sin6);
4234                         return (error);
4235                 }
4236                 *addr = (struct sockaddr *)sin6;
4237         }
4238         /* Wake any delayed sleep action */
4239         if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) {
4240                 SCTP_INP_WLOCK(inp);
4241                 inp->sctp_flags &= ~SCTP_PCB_FLAGS_DONT_WAKE;
4242                 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT) {
4243                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
4244                         SCTP_INP_WUNLOCK(inp);
4245                         SOCKBUF_LOCK(&inp->sctp_socket->so_snd);
4246                         if (sowriteable(inp->sctp_socket)) {
4247                                 sowwakeup_locked(inp->sctp_socket);
4248                         } else {
4249                                 SOCKBUF_UNLOCK(&inp->sctp_socket->so_snd);
4250                         }
4251                         SCTP_INP_WLOCK(inp);
4252                 }
4253                 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT) {
4254                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
4255                         SCTP_INP_WUNLOCK(inp);
4256                         SOCKBUF_LOCK(&inp->sctp_socket->so_rcv);
4257                         if (soreadable(inp->sctp_socket)) {
4258                                 sctp_defered_wakeup_cnt++;
4259                                 sorwakeup_locked(inp->sctp_socket);
4260                         } else {
4261                                 SOCKBUF_UNLOCK(&inp->sctp_socket->so_rcv);
4262                         }
4263                         SCTP_INP_WLOCK(inp);
4264                 }
4265                 SCTP_INP_WUNLOCK(inp);
4266         }
4267         return (0);
4268 }
4269
4270 int
4271 sctp_ingetaddr(struct socket *so, struct sockaddr **addr)
4272 {
4273         struct sockaddr_in *sin;
4274         uint32_t vrf_id;
4275         struct sctp_inpcb *inp;
4276         struct sctp_ifa *sctp_ifa;
4277
4278         /*
4279          * Do the malloc first in case it blocks.
4280          */
4281         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
4282         sin->sin_family = AF_INET;
4283         sin->sin_len = sizeof(*sin);
4284         inp = (struct sctp_inpcb *)so->so_pcb;
4285         if (!inp) {
4286                 SCTP_FREE_SONAME(sin);
4287                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4288                 return ECONNRESET;
4289         }
4290         SCTP_INP_RLOCK(inp);
4291         sin->sin_port = inp->sctp_lport;
4292         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
4293                 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4294                         struct sctp_tcb *stcb;
4295                         struct sockaddr_in *sin_a;
4296                         struct sctp_nets *net;
4297                         int fnd;
4298
4299                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
4300                         if (stcb == NULL) {
4301                                 goto notConn;
4302                         }
4303                         fnd = 0;
4304                         sin_a = NULL;
4305                         SCTP_TCB_LOCK(stcb);
4306                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
4307                                 sin_a = (struct sockaddr_in *)&net->ro._l_addr;
4308                                 if (sin_a == NULL)
4309                                         /* this will make coverity happy */
4310                                         continue;
4311
4312                                 if (sin_a->sin_family == AF_INET) {
4313                                         fnd = 1;
4314                                         break;
4315                                 }
4316                         }
4317                         if ((!fnd) || (sin_a == NULL)) {
4318                                 /* punt */
4319                                 SCTP_TCB_UNLOCK(stcb);
4320                                 goto notConn;
4321                         }
4322                         vrf_id = inp->def_vrf_id;
4323                         sctp_ifa = sctp_source_address_selection(inp,
4324                             stcb,
4325                             (sctp_route_t *) & net->ro,
4326                             net, 0, vrf_id);
4327                         if (sctp_ifa) {
4328                                 sin->sin_addr = sctp_ifa->address.sin.sin_addr;
4329                                 sctp_free_ifa(sctp_ifa);
4330                         }
4331                         SCTP_TCB_UNLOCK(stcb);
4332                 } else {
4333                         /* For the bound all case you get back 0 */
4334         notConn:
4335                         sin->sin_addr.s_addr = 0;
4336                 }
4337
4338         } else {
4339                 /* Take the first IPv4 address in the list */
4340                 struct sctp_laddr *laddr;
4341                 int fnd = 0;
4342
4343                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4344                         if (laddr->ifa->address.sa.sa_family == AF_INET) {
4345                                 struct sockaddr_in *sin_a;
4346
4347                                 sin_a = (struct sockaddr_in *)&laddr->ifa->address.sa;
4348                                 sin->sin_addr = sin_a->sin_addr;
4349                                 fnd = 1;
4350                                 break;
4351                         }
4352                 }
4353                 if (!fnd) {
4354                         SCTP_FREE_SONAME(sin);
4355                         SCTP_INP_RUNLOCK(inp);
4356                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
4357                         return ENOENT;
4358                 }
4359         }
4360         SCTP_INP_RUNLOCK(inp);
4361         (*addr) = (struct sockaddr *)sin;
4362         return (0);
4363 }
4364
4365 int
4366 sctp_peeraddr(struct socket *so, struct sockaddr **addr)
4367 {
4368         struct sockaddr_in *sin = (struct sockaddr_in *)*addr;
4369         int fnd;
4370         struct sockaddr_in *sin_a;
4371         struct sctp_inpcb *inp;
4372         struct sctp_tcb *stcb;
4373         struct sctp_nets *net;
4374
4375         /* Do the malloc first in case it blocks. */
4376         inp = (struct sctp_inpcb *)so->so_pcb;
4377         if ((inp == NULL) ||
4378             ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) {
4379                 /* UDP type and listeners will drop out here */
4380                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
4381                 return (ENOTCONN);
4382         }
4383         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
4384         sin->sin_family = AF_INET;
4385         sin->sin_len = sizeof(*sin);
4386
4387         /* We must recapture incase we blocked */
4388         inp = (struct sctp_inpcb *)so->so_pcb;
4389         if (!inp) {
4390                 SCTP_FREE_SONAME(sin);
4391                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4392                 return ECONNRESET;
4393         }
4394         SCTP_INP_RLOCK(inp);
4395         stcb = LIST_FIRST(&inp->sctp_asoc_list);
4396         if (stcb) {
4397                 SCTP_TCB_LOCK(stcb);
4398         }
4399         SCTP_INP_RUNLOCK(inp);
4400         if (stcb == NULL) {
4401                 SCTP_FREE_SONAME(sin);
4402                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4403                 return ECONNRESET;
4404         }
4405         fnd = 0;
4406         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
4407                 sin_a = (struct sockaddr_in *)&net->ro._l_addr;
4408                 if (sin_a->sin_family == AF_INET) {
4409                         fnd = 1;
4410                         sin->sin_port = stcb->rport;
4411                         sin->sin_addr = sin_a->sin_addr;
4412                         break;
4413                 }
4414         }
4415         SCTP_TCB_UNLOCK(stcb);
4416         if (!fnd) {
4417                 /* No IPv4 address */
4418                 SCTP_FREE_SONAME(sin);
4419                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
4420                 return ENOENT;
4421         }
4422         (*addr) = (struct sockaddr *)sin;
4423         return (0);
4424 }
4425
4426 struct pr_usrreqs sctp_usrreqs = {
4427         .pru_abort = sctp_abort,
4428         .pru_accept = sctp_accept,
4429         .pru_attach = sctp_attach,
4430         .pru_bind = sctp_bind,
4431         .pru_connect = sctp_connect,
4432         .pru_control = in_control,
4433         .pru_close = sctp_close,
4434         .pru_detach = sctp_close,
4435         .pru_sopoll = sopoll_generic,
4436         .pru_disconnect = sctp_disconnect,
4437         .pru_listen = sctp_listen,
4438         .pru_peeraddr = sctp_peeraddr,
4439         .pru_send = sctp_sendm,
4440         .pru_shutdown = sctp_shutdown,
4441         .pru_sockaddr = sctp_ingetaddr,
4442         .pru_sosend = sctp_sosend,
4443         .pru_soreceive = sctp_soreceive
4444 };