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_flush(struct socket *so, int how)
 923 {
 924         /*
 925          * We will just clear out the values and let subsequent close clear
 926          * out the data, if any. Note if the user did a shutdown(SHUT_RD)
 927          * they will not be able to read the data, the socket will block
 928          * that from happening.
 929          */
 930         if ((how == PRU_FLUSH_RD) || (how == PRU_FLUSH_RDWR)) {
 931                 /*
 932                  * First make sure the sb will be happy, we don't use these
 933                  * except maybe the count
 934                  */
 935                 so->so_rcv.sb_cc = 0;
 936                 so->so_rcv.sb_mbcnt = 0;
 937                 so->so_rcv.sb_mb = NULL;
 938         }
 939         if ((how == PRU_FLUSH_WR) || (how == PRU_FLUSH_RDWR)) {
 940                 /*
 941                  * First make sure the sb will be happy, we don't use these
 942                  * except maybe the count
 943                  */
 944                 so->so_snd.sb_cc = 0;
 945                 so->so_snd.sb_mbcnt = 0;
 946                 so->so_snd.sb_mb = NULL;
 947
 948         }
 949         return (0);
 950 }
 951
 952 int
 953 sctp_shutdown(struct socket *so)
 954 {
 955         struct sctp_inpcb *inp;
 956
 957         inp = (struct sctp_inpcb *)so->so_pcb;
 958         if (inp == 0) {
 959                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 960                 return EINVAL;
 961         }
 962         SCTP_INP_RLOCK(inp);
 963         /* For UDP model this is a invalid call */
 964         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
 965                 /* Restore the flags that the soshutdown took away. */
 966                 so->so_rcv.sb_state &= ~SBS_CANTRCVMORE;
 967                 /* This proc will wakeup for read and do nothing (I hope) */
 968                 SCTP_INP_RUNLOCK(inp);
 969                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
 970                 return (EOPNOTSUPP);
 971         }
 972         /*
 973          * Ok if we reach here its the TCP model and it is either a SHUT_WR
 974          * or SHUT_RDWR. This means we put the shutdown flag against it.
 975          */
 976         {
 977                 struct sctp_tcb *stcb;
 978                 struct sctp_association *asoc;
 979
 980                 socantsendmore(so);
 981
 982                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
 983                 if (stcb == NULL) {
 984                         /*
 985                          * Ok we hit the case that the shutdown call was
 986                          * made after an abort or something. Nothing to do
 987                          * now.
 988                          */
 989                         SCTP_INP_RUNLOCK(inp);
 990                         return (0);
 991                 }
 992                 SCTP_TCB_LOCK(stcb);
 993                 asoc = &stcb->asoc;
 994                 if (TAILQ_EMPTY(&asoc->send_queue) &&
 995                     TAILQ_EMPTY(&asoc->sent_queue) &&
 996                     (asoc->stream_queue_cnt == 0)) {
 997                         if (asoc->locked_on_sending) {
 998                                 goto abort_anyway;
 999                         }
1000                         /* there is nothing queued to send, so I'm done... */
1001                         if (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) {
1002                                 /* only send SHUTDOWN the first time through */
1003                                 sctp_stop_timers_for_shutdown(stcb);
1004                                 sctp_send_shutdown(stcb,
1005                                     stcb->asoc.primary_destination);
1006                                 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_LOCKED);
1007                                 if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
1008                                     (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
1009                                         SCTP_STAT_DECR_GAUGE32(sctps_currestab);
1010                                 }
1011                                 SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT);
1012                                 SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING);
1013                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN,
1014                                     stcb->sctp_ep, stcb,
1015                                     asoc->primary_destination);
1016                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD,
1017                                     stcb->sctp_ep, stcb,
1018                                     asoc->primary_destination);
1019                         }
1020                 } else {
1021                         /*
1022                          * we still got (or just got) data to send, so set
1023                          * SHUTDOWN_PENDING
1024                          */
1025                         asoc->state |= SCTP_STATE_SHUTDOWN_PENDING;
1026                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb,
1027                             asoc->primary_destination);
1028
1029                         if (asoc->locked_on_sending) {
1030                                 /* Locked to send out the data */
1031                                 struct sctp_stream_queue_pending *sp;
1032
1033                                 sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead);
1034                                 if (sp == NULL) {
1035                                         SCTP_PRINTF("Error, sp is NULL, locked on sending is non-null strm:%d\n",
1036                                             asoc->locked_on_sending->stream_no);
1037                                 } else {
1038                                         if ((sp->length == 0) && (sp->msg_is_complete == 0)) {
1039                                                 asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT;
1040                                         }
1041                                 }
1042                         }
1043                         if (TAILQ_EMPTY(&asoc->send_queue) &&
1044                             TAILQ_EMPTY(&asoc->sent_queue) &&
1045                             (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
1046                                 struct mbuf *op_err;
1047
1048                 abort_anyway:
1049                                 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
1050                                     0, M_DONTWAIT, 1, MT_DATA);
1051                                 if (op_err) {
1052                                         /* Fill in the user initiated abort */
1053                                         struct sctp_paramhdr *ph;
1054                                         uint32_t *ippp;
1055
1056                                         SCTP_BUF_LEN(op_err) =
1057                                             sizeof(struct sctp_paramhdr) + sizeof(uint32_t);
1058                                         ph = mtod(op_err,
1059                                             struct sctp_paramhdr *);
1060                                         ph->param_type = htons(
1061                                             SCTP_CAUSE_USER_INITIATED_ABT);
1062                                         ph->param_length = htons(SCTP_BUF_LEN(op_err));
1063                                         ippp = (uint32_t *) (ph + 1);
1064                                         *ippp = htonl(SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6);
1065                                 }
1066 #if defined(SCTP_PANIC_ON_ABORT)
1067                                 panic("shutdown does an abort");
1068 #endif
1069                                 stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6;
1070                                 sctp_abort_an_association(stcb->sctp_ep, stcb,
1071                                     SCTP_RESPONSE_TO_USER_REQ,
1072                                     op_err, SCTP_SO_LOCKED);
1073                                 goto skip_unlock;
1074                         } else {
1075                                 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
1076                         }
1077                 }
1078                 SCTP_TCB_UNLOCK(stcb);
1079         }
1080 skip_unlock:
1081         SCTP_INP_RUNLOCK(inp);
1082         return 0;
1083 }
1084
1085 /*
1086  * copies a "user" presentable address and removes embedded scope, etc.
1087  * returns 0 on success, 1 on error
1088  */
1089 static uint32_t
1090 sctp_fill_user_address(struct sockaddr_storage *ss, struct sockaddr *sa)
1091 {
1092 #ifdef INET6
1093         struct sockaddr_in6 lsa6;
1094
1095         sa = (struct sockaddr *)sctp_recover_scope((struct sockaddr_in6 *)sa,
1096             &lsa6);
1097 #endif
1098         memcpy(ss, sa, sa->sa_len);
1099         return (0);
1100 }
1101
1102
1103
1104 /*
1105  * NOTE: assumes addr lock is held
1106  */
1107 static size_t
1108 sctp_fill_up_addresses_vrf(struct sctp_inpcb *inp,
1109     struct sctp_tcb *stcb,
1110     size_t limit,
1111     struct sockaddr_storage *sas,
1112     uint32_t vrf_id)
1113 {
1114         struct sctp_ifn *sctp_ifn;
1115         struct sctp_ifa *sctp_ifa;
1116         int loopback_scope, ipv4_local_scope, local_scope, site_scope;
1117         size_t actual;
1118         int ipv4_addr_legal, ipv6_addr_legal;
1119         struct sctp_vrf *vrf;
1120
1121         actual = 0;
1122         if (limit <= 0)
1123                 return (actual);
1124
1125         if (stcb) {
1126                 /* Turn on all the appropriate scope */
1127                 loopback_scope = stcb->asoc.loopback_scope;
1128                 ipv4_local_scope = stcb->asoc.ipv4_local_scope;
1129                 local_scope = stcb->asoc.local_scope;
1130                 site_scope = stcb->asoc.site_scope;
1131         } else {
1132                 /* Turn on ALL scope, since we look at the EP */
1133                 loopback_scope = ipv4_local_scope = local_scope =
1134                     site_scope = 1;
1135         }
1136         ipv4_addr_legal = ipv6_addr_legal = 0;
1137         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1138                 ipv6_addr_legal = 1;
1139                 if (SCTP_IPV6_V6ONLY(inp) == 0) {
1140                         ipv4_addr_legal = 1;
1141                 }
1142         } else {
1143                 ipv4_addr_legal = 1;
1144         }
1145         vrf = sctp_find_vrf(vrf_id);
1146         if (vrf == NULL) {
1147                 return (0);
1148         }
1149         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1150                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
1151                         if ((loopback_scope == 0) &&
1152                             SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
1153                                 /* Skip loopback if loopback_scope not set */
1154                                 continue;
1155                         }
1156                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
1157                                 if (stcb) {
1158                                         /*
1159                                          * For the BOUND-ALL case, the list
1160                                          * associated with a TCB is Always
1161                                          * considered a reverse list.. i.e.
1162                                          * it lists addresses that are NOT
1163                                          * part of the association. If this
1164                                          * is one of those we must skip it.
1165                                          */
1166                                         if (sctp_is_addr_restricted(stcb,
1167                                             sctp_ifa)) {
1168                                                 continue;
1169                                         }
1170                                 }
1171                                 switch (sctp_ifa->address.sa.sa_family) {
1172                                 case AF_INET:
1173                                         if (ipv4_addr_legal) {
1174                                                 struct sockaddr_in *sin;
1175
1176                                                 sin = (struct sockaddr_in *)&sctp_ifa->address.sa;
1177                                                 if (sin->sin_addr.s_addr == 0) {
1178                                                         /*
1179                                                          * we skip
1180                                                          * unspecifed
1181                                                          * addresses
1182                                                          */
1183                                                         continue;
1184                                                 }
1185                                                 if ((ipv4_local_scope == 0) &&
1186                                                     (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
1187                                                         continue;
1188                                                 }
1189 #ifdef INET6
1190                                                 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
1191                                                         in6_sin_2_v4mapsin6(sin, (struct sockaddr_in6 *)sas);
1192                                                         ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
1193                                                         sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(struct sockaddr_in6));
1194                                                         actual += sizeof(struct sockaddr_in6);
1195                                                 } else {
1196 #endif
1197                                                         memcpy(sas, sin, sizeof(*sin));
1198                                                         ((struct sockaddr_in *)sas)->sin_port = inp->sctp_lport;
1199                                                         sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(*sin));
1200                                                         actual += sizeof(*sin);
1201 #ifdef INET6
1202                                                 }
1203 #endif
1204                                                 if (actual >= limit) {
1205                                                         return (actual);
1206                                                 }
1207                                         } else {
1208                                                 continue;
1209                                         }
1210                                         break;
1211 #ifdef INET6
1212                                 case AF_INET6:
1213                                         if (ipv6_addr_legal) {
1214                                                 struct sockaddr_in6 *sin6;
1215
1216                                                 sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa;
1217                                                 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1218                                                         /*
1219                                                          * we skip
1220                                                          * unspecifed
1221                                                          * addresses
1222                                                          */
1223                                                         continue;
1224                                                 }
1225                                                 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
1226                                                         if (local_scope == 0)
1227                                                                 continue;
1228                                                         if (sin6->sin6_scope_id == 0) {
1229                                                                 if (sa6_recoverscope(sin6) != 0)
1230                                                                         /*
1231                                                                          *
1232                                                                          * bad
1233                                                                          *
1234                                                                          * li
1235                                                                          * nk
1236                                                                          *
1237                                                                          * loc
1238                                                                          * al
1239                                                                          *
1240                                                                          * add
1241                                                                          * re
1242                                                                          * ss
1243                                                                          * */
1244                                                                         continue;
1245                                                         }
1246                                                 }
1247                                                 if ((site_scope == 0) &&
1248                                                     (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
1249                                                         continue;
1250                                                 }
1251                                                 memcpy(sas, sin6, sizeof(*sin6));
1252                                                 ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
1253                                                 sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(*sin6));
1254                                                 actual += sizeof(*sin6);
1255                                                 if (actual >= limit) {
1256                                                         return (actual);
1257                                                 }
1258                                         } else {
1259                                                 continue;
1260                                         }
1261                                         break;
1262 #endif
1263                                 default:
1264                                         /* TSNH */
1265                                         break;
1266                                 }
1267                         }
1268                 }
1269         } else {
1270                 struct sctp_laddr *laddr;
1271
1272                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1273                         if (stcb) {
1274                                 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
1275                                         continue;
1276                                 }
1277                         }
1278                         if (sctp_fill_user_address(sas, &laddr->ifa->address.sa))
1279                                 continue;
1280
1281                         ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
1282                         sas = (struct sockaddr_storage *)((caddr_t)sas +
1283                             laddr->ifa->address.sa.sa_len);
1284                         actual += laddr->ifa->address.sa.sa_len;
1285                         if (actual >= limit) {
1286                                 return (actual);
1287                         }
1288                 }
1289         }
1290         return (actual);
1291 }
1292
1293 static size_t
1294 sctp_fill_up_addresses(struct sctp_inpcb *inp,
1295     struct sctp_tcb *stcb,
1296     size_t limit,
1297     struct sockaddr_storage *sas)
1298 {
1299         size_t size = 0;
1300
1301         SCTP_IPI_ADDR_RLOCK();
1302         /* fill up addresses for the endpoint's default vrf */
1303         size = sctp_fill_up_addresses_vrf(inp, stcb, limit, sas,
1304             inp->def_vrf_id);
1305         SCTP_IPI_ADDR_RUNLOCK();
1306         return (size);
1307 }
1308
1309 /*
1310  * NOTE: assumes addr lock is held
1311  */
1312 static int
1313 sctp_count_max_addresses_vrf(struct sctp_inpcb *inp, uint32_t vrf_id)
1314 {
1315         int cnt = 0;
1316         struct sctp_vrf *vrf = NULL;
1317
1318         /*
1319          * In both sub-set bound an bound_all cases we return the MAXIMUM
1320          * number of addresses that you COULD get. In reality the sub-set
1321          * bound may have an exclusion list for a given TCB OR in the
1322          * bound-all case a TCB may NOT include the loopback or other
1323          * addresses as well.
1324          */
1325         vrf = sctp_find_vrf(vrf_id);
1326         if (vrf == NULL) {
1327                 return (0);
1328         }
1329         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1330                 struct sctp_ifn *sctp_ifn;
1331                 struct sctp_ifa *sctp_ifa;
1332
1333                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
1334                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
1335                                 /* Count them if they are the right type */
1336                                 if (sctp_ifa->address.sa.sa_family == AF_INET) {
1337                                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4))
1338                                                 cnt += sizeof(struct sockaddr_in6);
1339                                         else
1340                                                 cnt += sizeof(struct sockaddr_in);
1341
1342                                 } else if (sctp_ifa->address.sa.sa_family == AF_INET6)
1343                                         cnt += sizeof(struct sockaddr_in6);
1344                         }
1345                 }
1346         } else {
1347                 struct sctp_laddr *laddr;
1348
1349                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1350                         if (laddr->ifa->address.sa.sa_family == AF_INET) {
1351                                 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4))
1352                                         cnt += sizeof(struct sockaddr_in6);
1353                                 else
1354                                         cnt += sizeof(struct sockaddr_in);
1355
1356                         } else if (laddr->ifa->address.sa.sa_family == AF_INET6)
1357                                 cnt += sizeof(struct sockaddr_in6);
1358                 }
1359         }
1360         return (cnt);
1361 }
1362
1363 static int
1364 sctp_count_max_addresses(struct sctp_inpcb *inp)
1365 {
1366         int cnt = 0;
1367
1368         SCTP_IPI_ADDR_RLOCK();
1369         /* count addresses for the endpoint's default VRF */
1370         cnt = sctp_count_max_addresses_vrf(inp, inp->def_vrf_id);
1371         SCTP_IPI_ADDR_RUNLOCK();
1372         return (cnt);
1373 }
1374
1375 static int
1376 sctp_do_connect_x(struct socket *so, struct sctp_inpcb *inp, void *optval,
1377     size_t optsize, void *p, int delay)
1378 {
1379         int error = 0;
1380         int creat_lock_on = 0;
1381         struct sctp_tcb *stcb = NULL;
1382         struct sockaddr *sa;
1383         int num_v6 = 0, num_v4 = 0, *totaddrp, totaddr;
1384         int added = 0;
1385         uint32_t vrf_id;
1386         int bad_addresses = 0;
1387         sctp_assoc_t *a_id;
1388
1389         SCTPDBG(SCTP_DEBUG_PCB1, "Connectx called\n");
1390
1391         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
1392             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
1393                 /* We are already connected AND the TCP model */
1394                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
1395                 return (EADDRINUSE);
1396         }
1397         if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
1398                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1399                 return (EINVAL);
1400         }
1401         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
1402                 SCTP_INP_RLOCK(inp);
1403                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1404                 SCTP_INP_RUNLOCK(inp);
1405         }
1406         if (stcb) {
1407                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
1408                 return (EALREADY);
1409         }
1410         SCTP_INP_INCR_REF(inp);
1411         SCTP_ASOC_CREATE_LOCK(inp);
1412         creat_lock_on = 1;
1413         if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
1414             (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
1415                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EFAULT);
1416                 error = EFAULT;
1417                 goto out_now;
1418         }
1419         totaddrp = (int *)optval;
1420         totaddr = *totaddrp;
1421         sa = (struct sockaddr *)(totaddrp + 1);
1422         stcb = sctp_connectx_helper_find(inp, sa, &totaddr, &num_v4, &num_v6, &error, (optsize - sizeof(int)), &bad_addresses);
1423         if ((stcb != NULL) || bad_addresses) {
1424                 /* Already have or am bring up an association */
1425                 SCTP_ASOC_CREATE_UNLOCK(inp);
1426                 creat_lock_on = 0;
1427                 if (stcb)
1428                         SCTP_TCB_UNLOCK(stcb);
1429                 if (bad_addresses == 0) {
1430                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
1431                         error = EALREADY;
1432                 }
1433                 goto out_now;
1434         }
1435 #ifdef INET6
1436         if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) &&
1437             (num_v6 > 0)) {
1438                 error = EINVAL;
1439                 goto out_now;
1440         }
1441         if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1442             (num_v4 > 0)) {
1443                 struct in6pcb *inp6;
1444
1445                 inp6 = (struct in6pcb *)inp;
1446                 if (SCTP_IPV6_V6ONLY(inp6)) {
1447                         /*
1448                          * if IPV6_V6ONLY flag, ignore connections destined
1449                          * to a v4 addr or v4-mapped addr
1450                          */
1451                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1452                         error = EINVAL;
1453                         goto out_now;
1454                 }
1455         }
1456 #endif                          /* INET6 */
1457         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
1458             SCTP_PCB_FLAGS_UNBOUND) {
1459                 /* Bind a ephemeral port */
1460                 error = sctp_inpcb_bind(so, NULL, NULL, p);
1461                 if (error) {
1462                         goto out_now;
1463                 }
1464         }
1465         /* FIX ME: do we want to pass in a vrf on the connect call? */
1466         vrf_id = inp->def_vrf_id;
1467
1468         /* We are GOOD to go */
1469         stcb = sctp_aloc_assoc(inp, sa, 1, &error, 0, vrf_id,
1470             (struct thread *)p
1471             );
1472         if (stcb == NULL) {
1473                 /* Gak! no memory */
1474                 goto out_now;
1475         }
1476         SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_COOKIE_WAIT);
1477         /* move to second address */
1478         if (sa->sa_family == AF_INET)
1479                 sa = (struct sockaddr *)((caddr_t)sa + sizeof(struct sockaddr_in));
1480         else
1481                 sa = (struct sockaddr *)((caddr_t)sa + sizeof(struct sockaddr_in6));
1482
1483         error = 0;
1484         added = sctp_connectx_helper_add(stcb, sa, (totaddr - 1), &error);
1485         /* Fill in the return id */
1486         if (error) {
1487                 (void)sctp_free_assoc(inp, stcb, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_12);
1488                 goto out_now;
1489         }
1490         a_id = (sctp_assoc_t *) optval;
1491         *a_id = sctp_get_associd(stcb);
1492
1493         /* initialize authentication parameters for the assoc */
1494         sctp_initialize_auth_params(inp, stcb);
1495
1496         if (delay) {
1497                 /* doing delayed connection */
1498                 stcb->asoc.delayed_connection = 1;
1499                 sctp_timer_start(SCTP_TIMER_TYPE_INIT, inp, stcb, stcb->asoc.primary_destination);
1500         } else {
1501                 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
1502                 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
1503         }
1504         SCTP_TCB_UNLOCK(stcb);
1505         if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
1506                 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
1507                 /* Set the connected flag so we can queue data */
1508                 soisconnecting(so);
1509         }
1510 out_now:
1511         if (creat_lock_on) {
1512                 SCTP_ASOC_CREATE_UNLOCK(inp);
1513         }
1514         SCTP_INP_DECR_REF(inp);
1515         return error;
1516 }
1517
1518 #define SCTP_FIND_STCB(inp, stcb, assoc_id) { \
1519         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||\
1520             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { \
1521                 SCTP_INP_RLOCK(inp); \
1522                 stcb = LIST_FIRST(&inp->sctp_asoc_list); \
1523                 if (stcb) { \
1524                         SCTP_TCB_LOCK(stcb); \
1525                 } \
1526                 SCTP_INP_RUNLOCK(inp); \
1527         } else if (assoc_id != 0) { \
1528                 stcb = sctp_findassociation_ep_asocid(inp, assoc_id, 1); \
1529                 if (stcb == NULL) { \
1530                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT); \
1531                         error = ENOENT; \
1532                         break; \
1533                 } \
1534         } else { \
1535                 stcb = NULL; \
1536         } \
1537   }
1538
1539
1540 #define SCTP_CHECK_AND_CAST(destp, srcp, type, size)  {\
1541         if (size < sizeof(type)) { \
1542                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); \
1543                 error = EINVAL; \
1544                 break; \
1545         } else { \
1546                 destp = (type *)srcp; \
1547         } \
1548       }
1549
1550 static int
1551 sctp_getopt(struct socket *so, int optname, void *optval, size_t *optsize,
1552     void *p)
1553 {
1554         struct sctp_inpcb *inp = NULL;
1555         int error, val = 0;
1556         struct sctp_tcb *stcb = NULL;
1557
1558         if (optval == NULL) {
1559                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1560                 return (EINVAL);
1561         }
1562         inp = (struct sctp_inpcb *)so->so_pcb;
1563         if (inp == 0) {
1564                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1565                 return EINVAL;
1566         }
1567         error = 0;
1568
1569         switch (optname) {
1570         case SCTP_NODELAY:
1571         case SCTP_AUTOCLOSE:
1572         case SCTP_EXPLICIT_EOR:
1573         case SCTP_AUTO_ASCONF:
1574         case SCTP_DISABLE_FRAGMENTS:
1575         case SCTP_I_WANT_MAPPED_V4_ADDR:
1576         case SCTP_USE_EXT_RCVINFO:
1577                 SCTP_INP_RLOCK(inp);
1578                 switch (optname) {
1579                 case SCTP_DISABLE_FRAGMENTS:
1580                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NO_FRAGMENT);
1581                         break;
1582                 case SCTP_I_WANT_MAPPED_V4_ADDR:
1583                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4);
1584                         break;
1585                 case SCTP_AUTO_ASCONF:
1586                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1587                                 /* only valid for bound all sockets */
1588                                 val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
1589                         } else {
1590                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1591                                 error = EINVAL;
1592                                 goto flags_out;
1593                         }
1594                         break;
1595                 case SCTP_EXPLICIT_EOR:
1596                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
1597                         break;
1598                 case SCTP_NODELAY:
1599                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NODELAY);
1600                         break;
1601                 case SCTP_USE_EXT_RCVINFO:
1602                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO);
1603                         break;
1604                 case SCTP_AUTOCLOSE:
1605                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTOCLOSE))
1606                                 val = TICKS_TO_SEC(inp->sctp_ep.auto_close_time);
1607                         else
1608                                 val = 0;
1609                         break;
1610
1611                 default:
1612                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
1613                         error = ENOPROTOOPT;
1614                 }               /* end switch (sopt->sopt_name) */
1615                 if (optname != SCTP_AUTOCLOSE) {
1616                         /* make it an "on/off" value */
1617                         val = (val != 0);
1618                 }
1619                 if (*optsize < sizeof(val)) {
1620                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
1621                         error = EINVAL;
1622                 }
1623 flags_out:
1624                 SCTP_INP_RUNLOCK(inp);
1625                 if (error == 0) {
1626                         /* return the option value */
1627                         *(int *)optval = val;
1628                         *optsize = sizeof(val);
1629                 }
1630                 break;
1631         case SCTP_GET_PACKET_LOG:
1632                 {
1633 #ifdef  SCTP_PACKET_LOGGING
1634                         uint8_t *target;
1635                         int ret;
1636
1637                         SCTP_CHECK_AND_CAST(target, optval, uint8_t, *optsize);
1638                         ret = sctp_copy_out_packet_log(target, (int)*optsize);
1639                         *optsize = ret;
1640 #else
1641                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
1642                         error = EOPNOTSUPP;
1643 #endif
1644                         break;
1645                 }
1646         case SCTP_PARTIAL_DELIVERY_POINT:
1647                 {
1648                         uint32_t *value;
1649
1650                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1651                         *value = inp->partial_delivery_point;
1652                         *optsize = sizeof(uint32_t);
1653                 }
1654                 break;
1655         case SCTP_FRAGMENT_INTERLEAVE:
1656                 {
1657                         uint32_t *value;
1658
1659                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1660                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) {
1661                                 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) {
1662                                         *value = SCTP_FRAG_LEVEL_2;
1663                                 } else {
1664                                         *value = SCTP_FRAG_LEVEL_1;
1665                                 }
1666                         } else {
1667                                 *value = SCTP_FRAG_LEVEL_0;
1668                         }
1669                         *optsize = sizeof(uint32_t);
1670                 }
1671                 break;
1672         case SCTP_CMT_ON_OFF:
1673                 {
1674                         struct sctp_assoc_value *av;
1675
1676                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1677                         if (sctp_cmt_on_off) {
1678                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1679                                 if (stcb) {
1680                                         av->assoc_value = stcb->asoc.sctp_cmt_on_off;
1681                                         SCTP_TCB_UNLOCK(stcb);
1682
1683                                 } else {
1684                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
1685                                         error = ENOTCONN;
1686                                 }
1687                         } else {
1688                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
1689                                 error = ENOPROTOOPT;
1690                         }
1691                         *optsize = sizeof(*av);
1692                 }
1693                 break;
1694                 /* JRS - Get socket option for pluggable congestion control */
1695         case SCTP_PLUGGABLE_CC:
1696                 {
1697                         struct sctp_assoc_value *av;
1698
1699                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1700                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1701                         if (stcb) {
1702                                 av->assoc_value = stcb->asoc.congestion_control_module;
1703                                 SCTP_TCB_UNLOCK(stcb);
1704                         } else {
1705                                 av->assoc_value = inp->sctp_ep.sctp_default_cc_module;
1706                         }
1707                         *optsize = sizeof(*av);
1708                 }
1709                 break;
1710         case SCTP_GET_ADDR_LEN:
1711                 {
1712                         struct sctp_assoc_value *av;
1713
1714                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1715                         error = EINVAL;
1716 #ifdef INET
1717                         if (av->assoc_value == AF_INET) {
1718                                 av->assoc_value = sizeof(struct sockaddr_in);
1719                                 error = 0;
1720                         }
1721 #endif
1722 #ifdef INET6
1723                         if (av->assoc_value == AF_INET6) {
1724                                 av->assoc_value = sizeof(struct sockaddr_in6);
1725                                 error = 0;
1726                         }
1727 #endif
1728                         if (error) {
1729                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
1730                         }
1731                         *optsize = sizeof(*av);
1732                 }
1733                 break;
1734         case SCTP_GET_ASSOC_NUMBER:
1735                 {
1736                         uint32_t *value, cnt;
1737
1738                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1739                         cnt = 0;
1740                         SCTP_INP_RLOCK(inp);
1741                         LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
1742                                 cnt++;
1743                         }
1744                         SCTP_INP_RUNLOCK(inp);
1745                         *value = cnt;
1746                         *optsize = sizeof(uint32_t);
1747                 }
1748                 break;
1749
1750         case SCTP_GET_ASSOC_ID_LIST:
1751                 {
1752                         struct sctp_assoc_ids *ids;
1753                         unsigned int at, limit;
1754
1755                         SCTP_CHECK_AND_CAST(ids, optval, struct sctp_assoc_ids, *optsize);
1756                         at = 0;
1757                         limit = *optsize / sizeof(sctp_assoc_t);
1758                         SCTP_INP_RLOCK(inp);
1759                         LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
1760                                 if (at < limit) {
1761                                         ids->gaids_assoc_id[at++] = sctp_get_associd(stcb);
1762                                 } else {
1763                                         error = EINVAL;
1764                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
1765                                         break;
1766                                 }
1767                         }
1768                         SCTP_INP_RUNLOCK(inp);
1769                         *optsize = at * sizeof(sctp_assoc_t);
1770                 }
1771                 break;
1772         case SCTP_CONTEXT:
1773                 {
1774                         struct sctp_assoc_value *av;
1775
1776                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1777                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1778
1779                         if (stcb) {
1780                                 av->assoc_value = stcb->asoc.context;
1781                                 SCTP_TCB_UNLOCK(stcb);
1782                         } else {
1783                                 SCTP_INP_RLOCK(inp);
1784                                 av->assoc_value = inp->sctp_context;
1785                                 SCTP_INP_RUNLOCK(inp);
1786                         }
1787                         *optsize = sizeof(*av);
1788                 }
1789                 break;
1790         case SCTP_VRF_ID:
1791                 {
1792                         uint32_t *default_vrfid;
1793
1794                         SCTP_CHECK_AND_CAST(default_vrfid, optval, uint32_t, *optsize);
1795                         *default_vrfid = inp->def_vrf_id;
1796                         break;
1797                 }
1798         case SCTP_GET_ASOC_VRF:
1799                 {
1800                         struct sctp_assoc_value *id;
1801
1802                         SCTP_CHECK_AND_CAST(id, optval, struct sctp_assoc_value, *optsize);
1803                         SCTP_FIND_STCB(inp, stcb, id->assoc_id);
1804                         if (stcb == NULL) {
1805                                 error = EINVAL;
1806                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
1807                                 break;
1808                         }
1809                         id->assoc_value = stcb->asoc.vrf_id;
1810                         break;
1811                 }
1812         case SCTP_GET_VRF_IDS:
1813                 {
1814                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
1815                         error = EOPNOTSUPP;
1816                         break;
1817                 }
1818         case SCTP_GET_NONCE_VALUES:
1819                 {
1820                         struct sctp_get_nonce_values *gnv;
1821
1822                         SCTP_CHECK_AND_CAST(gnv, optval, struct sctp_get_nonce_values, *optsize);
1823                         SCTP_FIND_STCB(inp, stcb, gnv->gn_assoc_id);
1824
1825                         if (stcb) {
1826                                 gnv->gn_peers_tag = stcb->asoc.peer_vtag;
1827                                 gnv->gn_local_tag = stcb->asoc.my_vtag;
1828                                 SCTP_TCB_UNLOCK(stcb);
1829                         } else {
1830                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
1831                                 error = ENOTCONN;
1832                         }
1833                         *optsize = sizeof(*gnv);
1834                 }
1835                 break;
1836         case SCTP_DELAYED_SACK:
1837                 {
1838                         struct sctp_sack_info *sack;
1839
1840                         SCTP_CHECK_AND_CAST(sack, optval, struct sctp_sack_info, *optsize);
1841                         SCTP_FIND_STCB(inp, stcb, sack->sack_assoc_id);
1842                         if (stcb) {
1843                                 sack->sack_delay = stcb->asoc.delayed_ack;
1844                                 sack->sack_freq = stcb->asoc.sack_freq;
1845                                 SCTP_TCB_UNLOCK(stcb);
1846                         } else {
1847                                 SCTP_INP_RLOCK(inp);
1848                                 sack->sack_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
1849                                 sack->sack_freq = inp->sctp_ep.sctp_sack_freq;
1850                                 SCTP_INP_RUNLOCK(inp);
1851                         }
1852                         *optsize = sizeof(*sack);
1853                 }
1854                 break;
1855
1856         case SCTP_GET_SNDBUF_USE:
1857                 {
1858                         struct sctp_sockstat *ss;
1859
1860                         SCTP_CHECK_AND_CAST(ss, optval, struct sctp_sockstat, *optsize);
1861                         SCTP_FIND_STCB(inp, stcb, ss->ss_assoc_id);
1862
1863                         if (stcb) {
1864                                 ss->ss_total_sndbuf = stcb->asoc.total_output_queue_size;
1865                                 ss->ss_total_recv_buf = (stcb->asoc.size_on_reasm_queue +
1866                                     stcb->asoc.size_on_all_streams);
1867                                 SCTP_TCB_UNLOCK(stcb);
1868                         } else {
1869                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
1870                                 error = ENOTCONN;
1871                         }
1872                         *optsize = sizeof(struct sctp_sockstat);
1873                 }
1874                 break;
1875         case SCTP_MAX_BURST:
1876                 {
1877                         uint8_t *value;
1878
1879                         SCTP_CHECK_AND_CAST(value, optval, uint8_t, *optsize);
1880
1881                         SCTP_INP_RLOCK(inp);
1882                         *value = inp->sctp_ep.max_burst;
1883                         SCTP_INP_RUNLOCK(inp);
1884                         *optsize = sizeof(uint8_t);
1885                 }
1886                 break;
1887         case SCTP_MAXSEG:
1888                 {
1889                         struct sctp_assoc_value *av;
1890                         int ovh;
1891
1892                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
1893                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
1894
1895                         if (stcb) {
1896                                 av->assoc_value = sctp_get_frag_point(stcb, &stcb->asoc);
1897                                 SCTP_TCB_UNLOCK(stcb);
1898                         } else {
1899                                 SCTP_INP_RLOCK(inp);
1900                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1901                                         ovh = SCTP_MED_OVERHEAD;
1902                                 } else {
1903                                         ovh = SCTP_MED_V4_OVERHEAD;
1904                                 }
1905                                 if (inp->sctp_frag_point >= SCTP_DEFAULT_MAXSEGMENT)
1906                                         av->assoc_value = 0;
1907                                 else
1908                                         av->assoc_value = inp->sctp_frag_point - ovh;
1909                                 SCTP_INP_RUNLOCK(inp);
1910                         }
1911                         *optsize = sizeof(struct sctp_assoc_value);
1912                 }
1913                 break;
1914         case SCTP_GET_STAT_LOG:
1915                 error = sctp_fill_stat_log(optval, optsize);
1916                 break;
1917         case SCTP_EVENTS:
1918                 {
1919                         struct sctp_event_subscribe *events;
1920
1921                         SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, *optsize);
1922                         memset(events, 0, sizeof(*events));
1923                         SCTP_INP_RLOCK(inp);
1924                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT))
1925                                 events->sctp_data_io_event = 1;
1926
1927                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT))
1928                                 events->sctp_association_event = 1;
1929
1930                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT))
1931                                 events->sctp_address_event = 1;
1932
1933                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT))
1934                                 events->sctp_send_failure_event = 1;
1935
1936                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR))
1937                                 events->sctp_peer_error_event = 1;
1938
1939                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT))
1940                                 events->sctp_shutdown_event = 1;
1941
1942                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT))
1943                                 events->sctp_partial_delivery_event = 1;
1944
1945                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT))
1946                                 events->sctp_adaptation_layer_event = 1;
1947
1948                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT))
1949                                 events->sctp_authentication_event = 1;
1950
1951                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT))
1952                                 events->sctp_stream_reset_events = 1;
1953                         SCTP_INP_RUNLOCK(inp);
1954                         *optsize = sizeof(struct sctp_event_subscribe);
1955                 }
1956                 break;
1957
1958         case SCTP_ADAPTATION_LAYER:
1959                 {
1960                         uint32_t *value;
1961
1962                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1963
1964                         SCTP_INP_RLOCK(inp);
1965                         *value = inp->sctp_ep.adaptation_layer_indicator;
1966                         SCTP_INP_RUNLOCK(inp);
1967                         *optsize = sizeof(uint32_t);
1968                 }
1969                 break;
1970         case SCTP_SET_INITIAL_DBG_SEQ:
1971                 {
1972                         uint32_t *value;
1973
1974                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1975                         SCTP_INP_RLOCK(inp);
1976                         *value = inp->sctp_ep.initial_sequence_debug;
1977                         SCTP_INP_RUNLOCK(inp);
1978                         *optsize = sizeof(uint32_t);
1979                 }
1980                 break;
1981         case SCTP_GET_LOCAL_ADDR_SIZE:
1982                 {
1983                         uint32_t *value;
1984
1985                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1986                         SCTP_INP_RLOCK(inp);
1987                         *value = sctp_count_max_addresses(inp);
1988                         SCTP_INP_RUNLOCK(inp);
1989                         *optsize = sizeof(uint32_t);
1990                 }
1991                 break;
1992         case SCTP_GET_REMOTE_ADDR_SIZE:
1993                 {
1994                         uint32_t *value;
1995                         size_t size;
1996                         struct sctp_nets *net;
1997
1998                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
1999                         /* FIXME MT: change to sctp_assoc_value? */
2000                         SCTP_FIND_STCB(inp, stcb, (sctp_assoc_t) * value);
2001
2002                         if (stcb) {
2003                                 size = 0;
2004                                 /* Count the sizes */
2005                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2006                                         if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) ||
2007                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) {
2008                                                 size += sizeof(struct sockaddr_in6);
2009                                         } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) {
2010                                                 size += sizeof(struct sockaddr_in);
2011                                         } else {
2012                                                 /* huh */
2013                                                 break;
2014                                         }
2015                                 }
2016                                 SCTP_TCB_UNLOCK(stcb);
2017                                 *value = (uint32_t) size;
2018                         } else {
2019                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
2020                                 error = ENOTCONN;
2021                         }
2022                         *optsize = sizeof(uint32_t);
2023                 }
2024                 break;
2025         case SCTP_GET_PEER_ADDRESSES:
2026                 /*
2027                  * Get the address information, an array is passed in to
2028                  * fill up we pack it.
2029                  */
2030                 {
2031                         size_t cpsz, left;
2032                         struct sockaddr_storage *sas;
2033                         struct sctp_nets *net;
2034                         struct sctp_getaddresses *saddr;
2035
2036                         SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize);
2037                         SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id);
2038
2039                         if (stcb) {
2040                                 left = (*optsize) - sizeof(struct sctp_getaddresses);
2041                                 *optsize = sizeof(struct sctp_getaddresses);
2042                                 sas = (struct sockaddr_storage *)&saddr->addr[0];
2043
2044                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2045                                         if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) ||
2046                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) {
2047                                                 cpsz = sizeof(struct sockaddr_in6);
2048                                         } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) {
2049                                                 cpsz = sizeof(struct sockaddr_in);
2050                                         } else {
2051                                                 /* huh */
2052                                                 break;
2053                                         }
2054                                         if (left < cpsz) {
2055                                                 /* not enough room. */
2056                                                 break;
2057                                         }
2058 #ifdef INET6
2059                                         if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) &&
2060                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET)) {
2061                                                 /* Must map the address */
2062                                                 in6_sin_2_v4mapsin6((struct sockaddr_in *)&net->ro._l_addr,
2063                                                     (struct sockaddr_in6 *)sas);
2064                                         } else {
2065 #endif
2066                                                 memcpy(sas, &net->ro._l_addr, cpsz);
2067 #ifdef INET6
2068                                         }
2069 #endif
2070                                         ((struct sockaddr_in *)sas)->sin_port = stcb->rport;
2071
2072                                         sas = (struct sockaddr_storage *)((caddr_t)sas + cpsz);
2073                                         left -= cpsz;
2074                                         *optsize += cpsz;
2075                                 }
2076                                 SCTP_TCB_UNLOCK(stcb);
2077                         } else {
2078                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
2079                                 error = ENOENT;
2080                         }
2081                 }
2082                 break;
2083         case SCTP_GET_LOCAL_ADDRESSES:
2084                 {
2085                         size_t limit, actual;
2086                         struct sockaddr_storage *sas;
2087                         struct sctp_getaddresses *saddr;
2088
2089                         SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize);
2090                         SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id);
2091
2092                         sas = (struct sockaddr_storage *)&saddr->addr[0];
2093                         limit = *optsize - sizeof(sctp_assoc_t);
2094                         actual = sctp_fill_up_addresses(inp, stcb, limit, sas);
2095                         if (stcb) {
2096                                 SCTP_TCB_UNLOCK(stcb);
2097                         }
2098                         *optsize = sizeof(struct sockaddr_storage) + actual;
2099                 }
2100                 break;
2101         case SCTP_PEER_ADDR_PARAMS:
2102                 {
2103                         struct sctp_paddrparams *paddrp;
2104                         struct sctp_nets *net;
2105
2106                         SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, *optsize);
2107                         SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id);
2108
2109                         net = NULL;
2110                         if (stcb) {
2111                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address);
2112                         } else {
2113                                 /*
2114                                  * We increment here since
2115                                  * sctp_findassociation_ep_addr() wil do a
2116                                  * decrement if it finds the stcb as long as
2117                                  * the locked tcb (last argument) is NOT a
2118                                  * TCB.. aka NULL.
2119                                  */
2120                                 SCTP_INP_INCR_REF(inp);
2121                                 stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddrp->spp_address, &net, NULL, NULL);
2122                                 if (stcb == NULL) {
2123                                         SCTP_INP_DECR_REF(inp);
2124                                 }
2125                         }
2126                         if (stcb && (net == NULL)) {
2127                                 struct sockaddr *sa;
2128
2129                                 sa = (struct sockaddr *)&paddrp->spp_address;
2130                                 if (sa->sa_family == AF_INET) {
2131                                         struct sockaddr_in *sin;
2132
2133                                         sin = (struct sockaddr_in *)sa;
2134                                         if (sin->sin_addr.s_addr) {
2135                                                 error = EINVAL;
2136                                                 SCTP_TCB_UNLOCK(stcb);
2137                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2138                                                 break;
2139                                         }
2140                                 } else if (sa->sa_family == AF_INET6) {
2141                                         struct sockaddr_in6 *sin6;
2142
2143                                         sin6 = (struct sockaddr_in6 *)sa;
2144                                         if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2145                                                 error = EINVAL;
2146                                                 SCTP_TCB_UNLOCK(stcb);
2147                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2148                                                 break;
2149                                         }
2150                                 } else {
2151                                         error = EAFNOSUPPORT;
2152                                         SCTP_TCB_UNLOCK(stcb);
2153                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2154                                         break;
2155                                 }
2156                         }
2157                         if (stcb) {
2158                                 /* Applys to the specific association */
2159                                 paddrp->spp_flags = 0;
2160                                 if (net) {
2161                                         int ovh;
2162
2163                                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2164                                                 ovh = SCTP_MED_OVERHEAD;
2165                                         } else {
2166                                                 ovh = SCTP_MED_V4_OVERHEAD;
2167                                         }
2168
2169
2170                                         paddrp->spp_pathmaxrxt = net->failure_threshold;
2171                                         paddrp->spp_pathmtu = net->mtu - ovh;
2172                                         /* get flags for HB */
2173                                         if (net->dest_state & SCTP_ADDR_NOHB)
2174                                                 paddrp->spp_flags |= SPP_HB_DISABLE;
2175                                         else
2176                                                 paddrp->spp_flags |= SPP_HB_ENABLE;
2177                                         /* get flags for PMTU */
2178                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
2179                                                 paddrp->spp_flags |= SPP_PMTUD_ENABLE;
2180                                         } else {
2181                                                 paddrp->spp_flags |= SPP_PMTUD_DISABLE;
2182                                         }
2183 #ifdef INET
2184                                         if (net->ro._l_addr.sin.sin_family == AF_INET) {
2185                                                 paddrp->spp_ipv4_tos = net->tos_flowlabel & 0x000000fc;
2186                                                 paddrp->spp_flags |= SPP_IPV4_TOS;
2187                                         }
2188 #endif
2189 #ifdef INET6
2190                                         if (net->ro._l_addr.sin6.sin6_family == AF_INET6) {
2191                                                 paddrp->spp_ipv6_flowlabel = net->tos_flowlabel;
2192                                                 paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
2193                                         }
2194 #endif
2195                                 } else {
2196                                         /*
2197                                          * No destination so return default
2198                                          * value
2199                                          */
2200                                         int cnt = 0;
2201
2202                                         paddrp->spp_pathmaxrxt = stcb->asoc.def_net_failure;
2203                                         paddrp->spp_pathmtu = sctp_get_frag_point(stcb, &stcb->asoc);
2204 #ifdef INET
2205                                         paddrp->spp_ipv4_tos = stcb->asoc.default_tos & 0x000000fc;
2206                                         paddrp->spp_flags |= SPP_IPV4_TOS;
2207 #endif
2208 #ifdef INET6
2209                                         paddrp->spp_ipv6_flowlabel = stcb->asoc.default_flowlabel;
2210                                         paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
2211 #endif
2212                                         /* default settings should be these */
2213                                         if (stcb->asoc.hb_is_disabled == 0) {
2214                                                 paddrp->spp_flags |= SPP_HB_ENABLE;
2215                                         } else {
2216                                                 paddrp->spp_flags |= SPP_HB_DISABLE;
2217                                         }
2218                                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2219                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
2220                                                         cnt++;
2221                                                 }
2222                                         }
2223                                         if (cnt) {
2224                                                 paddrp->spp_flags |= SPP_PMTUD_ENABLE;
2225                                         }
2226                                 }
2227                                 paddrp->spp_hbinterval = stcb->asoc.heart_beat_delay;
2228                                 paddrp->spp_assoc_id = sctp_get_associd(stcb);
2229                                 SCTP_TCB_UNLOCK(stcb);
2230                         } else {
2231                                 /* Use endpoint defaults */
2232                                 SCTP_INP_RLOCK(inp);
2233                                 paddrp->spp_pathmaxrxt = inp->sctp_ep.def_net_failure;
2234                                 paddrp->spp_hbinterval = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
2235                                 paddrp->spp_assoc_id = (sctp_assoc_t) 0;
2236                                 /* get inp's default */
2237 #ifdef INET
2238                                 paddrp->spp_ipv4_tos = inp->ip_inp.inp.inp_ip_tos;
2239                                 paddrp->spp_flags |= SPP_IPV4_TOS;
2240 #endif
2241 #ifdef INET6
2242                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2243                                         paddrp->spp_ipv6_flowlabel = ((struct in6pcb *)inp)->in6p_flowinfo;
2244                                         paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
2245                                 }
2246 #endif
2247                                 /* can't return this */
2248                                 paddrp->spp_pathmtu = 0;
2249
2250                                 /* default behavior, no stcb */
2251                                 paddrp->spp_flags = SPP_PMTUD_ENABLE;
2252
2253                                 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
2254                                         paddrp->spp_flags |= SPP_HB_ENABLE;
2255                                 } else {
2256                                         paddrp->spp_flags |= SPP_HB_DISABLE;
2257                                 }
2258                                 SCTP_INP_RUNLOCK(inp);
2259                         }
2260                         *optsize = sizeof(struct sctp_paddrparams);
2261                 }
2262                 break;
2263         case SCTP_GET_PEER_ADDR_INFO:
2264                 {
2265                         struct sctp_paddrinfo *paddri;
2266                         struct sctp_nets *net;
2267
2268                         SCTP_CHECK_AND_CAST(paddri, optval, struct sctp_paddrinfo, *optsize);
2269                         SCTP_FIND_STCB(inp, stcb, paddri->spinfo_assoc_id);
2270
2271                         net = NULL;
2272                         if (stcb) {
2273                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddri->spinfo_address);
2274                         } else {
2275                                 /*
2276                                  * We increment here since
2277                                  * sctp_findassociation_ep_addr() wil do a
2278                                  * decrement if it finds the stcb as long as
2279                                  * the locked tcb (last argument) is NOT a
2280                                  * TCB.. aka NULL.
2281                                  */
2282                                 SCTP_INP_INCR_REF(inp);
2283                                 stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddri->spinfo_address, &net, NULL, NULL);
2284                                 if (stcb == NULL) {
2285                                         SCTP_INP_DECR_REF(inp);
2286                                 }
2287                         }
2288
2289                         if ((stcb) && (net)) {
2290                                 paddri->spinfo_state = net->dest_state & (SCTP_REACHABLE_MASK | SCTP_ADDR_NOHB);
2291                                 paddri->spinfo_cwnd = net->cwnd;
2292                                 paddri->spinfo_srtt = ((net->lastsa >> 2) + net->lastsv) >> 1;
2293                                 paddri->spinfo_rto = net->RTO;
2294                                 paddri->spinfo_assoc_id = sctp_get_associd(stcb);
2295                                 SCTP_TCB_UNLOCK(stcb);
2296                         } else {
2297                                 if (stcb) {
2298                                         SCTP_TCB_UNLOCK(stcb);
2299                                 }
2300                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
2301                                 error = ENOENT;
2302                         }
2303                         *optsize = sizeof(struct sctp_paddrinfo);
2304                 }
2305                 break;
2306         case SCTP_PCB_STATUS:
2307                 {
2308                         struct sctp_pcbinfo *spcb;
2309
2310                         SCTP_CHECK_AND_CAST(spcb, optval, struct sctp_pcbinfo, *optsize);
2311                         sctp_fill_pcbinfo(spcb);
2312                         *optsize = sizeof(struct sctp_pcbinfo);
2313                 }
2314                 break;
2315
2316         case SCTP_STATUS:
2317                 {
2318                         struct sctp_nets *net;
2319                         struct sctp_status *sstat;
2320
2321                         SCTP_CHECK_AND_CAST(sstat, optval, struct sctp_status, *optsize);
2322                         SCTP_FIND_STCB(inp, stcb, sstat->sstat_assoc_id);
2323
2324                         if (stcb == NULL) {
2325                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2326                                 error = EINVAL;
2327                                 break;
2328                         }
2329                         /*
2330                          * I think passing the state is fine since
2331                          * sctp_constants.h will be available to the user
2332                          * land.
2333                          */
2334                         sstat->sstat_state = stcb->asoc.state;
2335                         sstat->sstat_assoc_id = sctp_get_associd(stcb);
2336                         sstat->sstat_rwnd = stcb->asoc.peers_rwnd;
2337                         sstat->sstat_unackdata = stcb->asoc.sent_queue_cnt;
2338                         /*
2339                          * We can't include chunks that have been passed to
2340                          * the socket layer. Only things in queue.
2341                          */
2342                         sstat->sstat_penddata = (stcb->asoc.cnt_on_reasm_queue +
2343                             stcb->asoc.cnt_on_all_streams);
2344
2345
2346                         sstat->sstat_instrms = stcb->asoc.streamincnt;
2347                         sstat->sstat_outstrms = stcb->asoc.streamoutcnt;
2348                         sstat->sstat_fragmentation_point = sctp_get_frag_point(stcb, &stcb->asoc);
2349                         memcpy(&sstat->sstat_primary.spinfo_address,
2350                             &stcb->asoc.primary_destination->ro._l_addr,
2351                             ((struct sockaddr *)(&stcb->asoc.primary_destination->ro._l_addr))->sa_len);
2352                         net = stcb->asoc.primary_destination;
2353                         ((struct sockaddr_in *)&sstat->sstat_primary.spinfo_address)->sin_port = stcb->rport;
2354                         /*
2355                          * Again the user can get info from sctp_constants.h
2356                          * for what the state of the network is.
2357                          */
2358                         sstat->sstat_primary.spinfo_state = net->dest_state & SCTP_REACHABLE_MASK;
2359                         sstat->sstat_primary.spinfo_cwnd = net->cwnd;
2360                         sstat->sstat_primary.spinfo_srtt = net->lastsa;
2361                         sstat->sstat_primary.spinfo_rto = net->RTO;
2362                         sstat->sstat_primary.spinfo_mtu = net->mtu;
2363                         sstat->sstat_primary.spinfo_assoc_id = sctp_get_associd(stcb);
2364                         SCTP_TCB_UNLOCK(stcb);
2365                         *optsize = sizeof(*sstat);
2366                 }
2367                 break;
2368         case SCTP_RTOINFO:
2369                 {
2370                         struct sctp_rtoinfo *srto;
2371
2372                         SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, *optsize);
2373                         SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id);
2374
2375                         if (stcb) {
2376                                 srto->srto_initial = stcb->asoc.initial_rto;
2377                                 srto->srto_max = stcb->asoc.maxrto;
2378                                 srto->srto_min = stcb->asoc.minrto;
2379                                 SCTP_TCB_UNLOCK(stcb);
2380                         } else {
2381                                 SCTP_INP_RLOCK(inp);
2382                                 srto->srto_initial = inp->sctp_ep.initial_rto;
2383                                 srto->srto_max = inp->sctp_ep.sctp_maxrto;
2384                                 srto->srto_min = inp->sctp_ep.sctp_minrto;
2385                                 SCTP_INP_RUNLOCK(inp);
2386                         }
2387                         *optsize = sizeof(*srto);
2388                 }
2389                 break;
2390         case SCTP_ASSOCINFO:
2391                 {
2392                         struct sctp_assocparams *sasoc;
2393                         uint32_t oldval;
2394
2395                         SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, *optsize);
2396                         SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id);
2397
2398                         if (stcb) {
2399                                 oldval = sasoc->sasoc_cookie_life;
2400                                 sasoc->sasoc_cookie_life = TICKS_TO_MSEC(stcb->asoc.cookie_life);
2401                                 sasoc->sasoc_asocmaxrxt = stcb->asoc.max_send_times;
2402                                 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets;
2403                                 sasoc->sasoc_peer_rwnd = stcb->asoc.peers_rwnd;
2404                                 sasoc->sasoc_local_rwnd = stcb->asoc.my_rwnd;
2405                                 SCTP_TCB_UNLOCK(stcb);
2406                         } else {
2407                                 SCTP_INP_RLOCK(inp);
2408                                 sasoc->sasoc_cookie_life = TICKS_TO_MSEC(inp->sctp_ep.def_cookie_life);
2409                                 sasoc->sasoc_asocmaxrxt = inp->sctp_ep.max_send_times;
2410                                 sasoc->sasoc_number_peer_destinations = 0;
2411                                 sasoc->sasoc_peer_rwnd = 0;
2412                                 sasoc->sasoc_local_rwnd = sbspace(&inp->sctp_socket->so_rcv);
2413                                 SCTP_INP_RUNLOCK(inp);
2414                         }
2415                         *optsize = sizeof(*sasoc);
2416                 }
2417                 break;
2418         case SCTP_DEFAULT_SEND_PARAM:
2419                 {
2420                         struct sctp_sndrcvinfo *s_info;
2421
2422                         SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, *optsize);
2423                         SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id);
2424
2425                         if (stcb) {
2426                                 memcpy(s_info, &stcb->asoc.def_send, sizeof(stcb->asoc.def_send));
2427                                 SCTP_TCB_UNLOCK(stcb);
2428                         } else {
2429                                 SCTP_INP_RLOCK(inp);
2430                                 memcpy(s_info, &inp->def_send, sizeof(inp->def_send));
2431                                 SCTP_INP_RUNLOCK(inp);
2432                         }
2433                         *optsize = sizeof(*s_info);
2434                 }
2435                 break;
2436         case SCTP_INITMSG:
2437                 {
2438                         struct sctp_initmsg *sinit;
2439
2440                         SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, *optsize);
2441                         SCTP_INP_RLOCK(inp);
2442                         sinit->sinit_num_ostreams = inp->sctp_ep.pre_open_stream_count;
2443                         sinit->sinit_max_instreams = inp->sctp_ep.max_open_streams_intome;
2444                         sinit->sinit_max_attempts = inp->sctp_ep.max_init_times;
2445                         sinit->sinit_max_init_timeo = inp->sctp_ep.initial_init_rto_max;
2446                         SCTP_INP_RUNLOCK(inp);
2447                         *optsize = sizeof(*sinit);
2448                 }
2449                 break;
2450         case SCTP_PRIMARY_ADDR:
2451                 /* we allow a "get" operation on this */
2452                 {
2453                         struct sctp_setprim *ssp;
2454
2455                         SCTP_CHECK_AND_CAST(ssp, optval, struct sctp_setprim, *optsize);
2456                         SCTP_FIND_STCB(inp, stcb, ssp->ssp_assoc_id);
2457
2458                         if (stcb) {
2459                                 /* simply copy out the sockaddr_storage... */
2460                                 int len;
2461
2462                                 len = *optsize;
2463                                 if (len > stcb->asoc.primary_destination->ro._l_addr.sa.sa_len)
2464                                         len = stcb->asoc.primary_destination->ro._l_addr.sa.sa_len;
2465
2466                                 memcpy(&ssp->ssp_addr,
2467                                     &stcb->asoc.primary_destination->ro._l_addr,
2468                                     len);
2469                                 SCTP_TCB_UNLOCK(stcb);
2470                         } else {
2471                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2472                                 error = EINVAL;
2473                         }
2474                         *optsize = sizeof(*ssp);
2475                 }
2476                 break;
2477
2478         case SCTP_HMAC_IDENT:
2479                 {
2480                         struct sctp_hmacalgo *shmac;
2481                         sctp_hmaclist_t *hmaclist;
2482                         uint32_t size;
2483                         int i;
2484
2485                         SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, *optsize);
2486
2487                         SCTP_INP_RLOCK(inp);
2488                         hmaclist = inp->sctp_ep.local_hmacs;
2489                         if (hmaclist == NULL) {
2490                                 /* no HMACs to return */
2491                                 *optsize = sizeof(*shmac);
2492                                 SCTP_INP_RUNLOCK(inp);
2493                                 break;
2494                         }
2495                         /* is there room for all of the hmac ids? */
2496                         size = sizeof(*shmac) + (hmaclist->num_algo *
2497                             sizeof(shmac->shmac_idents[0]));
2498                         if ((size_t)(*optsize) < size) {
2499                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2500                                 error = EINVAL;
2501                                 SCTP_INP_RUNLOCK(inp);
2502                                 break;
2503                         }
2504                         /* copy in the list */
2505                         for (i = 0; i < hmaclist->num_algo; i++)
2506                                 shmac->shmac_idents[i] = hmaclist->hmac[i];
2507                         SCTP_INP_RUNLOCK(inp);
2508                         *optsize = size;
2509                         break;
2510                 }
2511         case SCTP_AUTH_ACTIVE_KEY:
2512                 {
2513                         struct sctp_authkeyid *scact;
2514
2515                         SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, *optsize);
2516                         SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id);
2517
2518                         if (stcb) {
2519                                 /* get the active key on the assoc */
2520                                 scact->scact_keynumber = stcb->asoc.authinfo.assoc_keyid;
2521                                 SCTP_TCB_UNLOCK(stcb);
2522                         } else {
2523                                 /* get the endpoint active key */
2524                                 SCTP_INP_RLOCK(inp);
2525                                 scact->scact_keynumber = inp->sctp_ep.default_keyid;
2526                                 SCTP_INP_RUNLOCK(inp);
2527                         }
2528                         *optsize = sizeof(*scact);
2529                         break;
2530                 }
2531         case SCTP_LOCAL_AUTH_CHUNKS:
2532                 {
2533                         struct sctp_authchunks *sac;
2534                         sctp_auth_chklist_t *chklist = NULL;
2535                         size_t size = 0;
2536
2537                         SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize);
2538                         SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id);
2539
2540                         if (stcb) {
2541                                 /* get off the assoc */
2542                                 chklist = stcb->asoc.local_auth_chunks;
2543                                 /* is there enough space? */
2544                                 size = sctp_auth_get_chklist_size(chklist);
2545                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2546                                         error = EINVAL;
2547                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2548                                 } else {
2549                                         /* copy in the chunks */
2550                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2551                                 }
2552                                 SCTP_TCB_UNLOCK(stcb);
2553                         } else {
2554                                 /* get off the endpoint */
2555                                 SCTP_INP_RLOCK(inp);
2556                                 chklist = inp->sctp_ep.local_auth_chunks;
2557                                 /* is there enough space? */
2558                                 size = sctp_auth_get_chklist_size(chklist);
2559                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2560                                         error = EINVAL;
2561                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2562                                 } else {
2563                                         /* copy in the chunks */
2564                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2565                                 }
2566                                 SCTP_INP_RUNLOCK(inp);
2567                         }
2568                         *optsize = sizeof(struct sctp_authchunks) + size;
2569                         break;
2570                 }
2571         case SCTP_PEER_AUTH_CHUNKS:
2572                 {
2573                         struct sctp_authchunks *sac;
2574                         sctp_auth_chklist_t *chklist = NULL;
2575                         size_t size = 0;
2576
2577                         SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize);
2578                         SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id);
2579
2580                         if (stcb) {
2581                                 /* get off the assoc */
2582                                 chklist = stcb->asoc.peer_auth_chunks;
2583                                 /* is there enough space? */
2584                                 size = sctp_auth_get_chklist_size(chklist);
2585                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
2586                                         error = EINVAL;
2587                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
2588                                 } else {
2589                                         /* copy in the chunks */
2590                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
2591                                 }
2592                                 SCTP_TCB_UNLOCK(stcb);
2593                         } else {
2594                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
2595                                 error = ENOENT;
2596                         }
2597                         *optsize = sizeof(struct sctp_authchunks) + size;
2598                         break;
2599                 }
2600
2601
2602         default:
2603                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
2604                 error = ENOPROTOOPT;
2605                 *optsize = 0;
2606                 break;
2607         }                       /* end switch (sopt->sopt_name) */
2608         return (error);
2609 }
2610
2611 static int
2612 sctp_setopt(struct socket *so, int optname, void *optval, size_t optsize,
2613     void *p)
2614 {
2615         int error, set_opt;
2616         uint32_t *mopt;
2617         struct sctp_tcb *stcb = NULL;
2618         struct sctp_inpcb *inp = NULL;
2619         uint32_t vrf_id;
2620
2621         if (optval == NULL) {
2622                 SCTP_PRINTF("optval is NULL\n");
2623                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2624                 return (EINVAL);
2625         }
2626         inp = (struct sctp_inpcb *)so->so_pcb;
2627         if (inp == 0) {
2628                 SCTP_PRINTF("inp is NULL?\n");
2629                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2630                 return EINVAL;
2631         }
2632         vrf_id = inp->def_vrf_id;
2633
2634         error = 0;
2635         switch (optname) {
2636         case SCTP_NODELAY:
2637         case SCTP_AUTOCLOSE:
2638         case SCTP_AUTO_ASCONF:
2639         case SCTP_EXPLICIT_EOR:
2640         case SCTP_DISABLE_FRAGMENTS:
2641         case SCTP_USE_EXT_RCVINFO:
2642         case SCTP_I_WANT_MAPPED_V4_ADDR:
2643                 /* copy in the option value */
2644                 SCTP_CHECK_AND_CAST(mopt, optval, uint32_t, optsize);
2645                 set_opt = 0;
2646                 if (error)
2647                         break;
2648                 switch (optname) {
2649                 case SCTP_DISABLE_FRAGMENTS:
2650                         set_opt = SCTP_PCB_FLAGS_NO_FRAGMENT;
2651                         break;
2652                 case SCTP_AUTO_ASCONF:
2653                         /*
2654                          * NOTE: we don't really support this flag
2655                          */
2656                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
2657                                 /* only valid for bound all sockets */
2658                                 set_opt = SCTP_PCB_FLAGS_AUTO_ASCONF;
2659                         } else {
2660                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2661                                 return (EINVAL);
2662                         }
2663                         break;
2664                 case SCTP_EXPLICIT_EOR:
2665                         set_opt = SCTP_PCB_FLAGS_EXPLICIT_EOR;
2666                         break;
2667                 case SCTP_USE_EXT_RCVINFO:
2668                         set_opt = SCTP_PCB_FLAGS_EXT_RCVINFO;
2669                         break;
2670                 case SCTP_I_WANT_MAPPED_V4_ADDR:
2671                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2672                                 set_opt = SCTP_PCB_FLAGS_NEEDS_MAPPED_V4;
2673                         } else {
2674                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2675                                 return (EINVAL);
2676                         }
2677                         break;
2678                 case SCTP_NODELAY:
2679                         set_opt = SCTP_PCB_FLAGS_NODELAY;
2680                         break;
2681                 case SCTP_AUTOCLOSE:
2682                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2683                             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
2684                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2685                                 return (EINVAL);
2686                         }
2687                         set_opt = SCTP_PCB_FLAGS_AUTOCLOSE;
2688                         /*
2689                          * The value is in ticks. Note this does not effect
2690                          * old associations, only new ones.
2691                          */
2692                         inp->sctp_ep.auto_close_time = SEC_TO_TICKS(*mopt);
2693                         break;
2694                 }
2695                 SCTP_INP_WLOCK(inp);
2696                 if (*mopt != 0) {
2697                         sctp_feature_on(inp, set_opt);
2698                 } else {
2699                         sctp_feature_off(inp, set_opt);
2700                 }
2701                 SCTP_INP_WUNLOCK(inp);
2702                 break;
2703         case SCTP_PARTIAL_DELIVERY_POINT:
2704                 {
2705                         uint32_t *value;
2706
2707                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, optsize);
2708                         if (*value > SCTP_SB_LIMIT_RCV(so)) {
2709                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2710                                 error = EINVAL;
2711                                 break;
2712                         }
2713                         inp->partial_delivery_point = *value;
2714                 }
2715                 break;
2716         case SCTP_FRAGMENT_INTERLEAVE:
2717                 /* not yet until we re-write sctp_recvmsg() */
2718                 {
2719                         uint32_t *level;
2720
2721                         SCTP_CHECK_AND_CAST(level, optval, uint32_t, optsize);
2722                         if (*level == SCTP_FRAG_LEVEL_2) {
2723                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2724                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2725                         } else if (*level == SCTP_FRAG_LEVEL_1) {
2726                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2727                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2728                         } else if (*level == SCTP_FRAG_LEVEL_0) {
2729                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2730                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2731
2732                         } else {
2733                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2734                                 error = EINVAL;
2735                         }
2736                 }
2737                 break;
2738         case SCTP_CMT_ON_OFF:
2739                 {
2740                         struct sctp_assoc_value *av;
2741
2742                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2743                         if (sctp_cmt_on_off) {
2744                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2745                                 if (stcb) {
2746                                         stcb->asoc.sctp_cmt_on_off = (uint8_t) av->assoc_value;
2747                                         SCTP_TCB_UNLOCK(stcb);
2748                                 } else {
2749                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
2750                                         error = ENOTCONN;
2751                                 }
2752                         } else {
2753                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
2754                                 error = ENOPROTOOPT;
2755                         }
2756                 }
2757                 break;
2758                 /* JRS - Set socket option for pluggable congestion control */
2759         case SCTP_PLUGGABLE_CC:
2760                 {
2761                         struct sctp_assoc_value *av;
2762
2763                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2764                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2765                         if (stcb) {
2766                                 switch (av->assoc_value) {
2767                                         /*
2768                                          * JRS - Standard TCP congestion
2769                                          * control
2770                                          */
2771                                 case SCTP_CC_RFC2581:
2772                                         {
2773                                                 stcb->asoc.congestion_control_module = SCTP_CC_RFC2581;
2774                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_set_initial_cc_param;
2775                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_cwnd_update_after_sack;
2776                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_cwnd_update_after_fr;
2777                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_cwnd_update_after_timeout;
2778                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_cwnd_update_after_ecn_echo;
2779                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
2780                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
2781                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_cwnd_update_after_fr_timer;
2782                                                 SCTP_TCB_UNLOCK(stcb);
2783                                                 break;
2784                                         }
2785                                         /*
2786                                          * JRS - High Speed TCP congestion
2787                                          * control (Floyd)
2788                                          */
2789                                 case SCTP_CC_HSTCP:
2790                                         {
2791                                                 stcb->asoc.congestion_control_module = SCTP_CC_HSTCP;
2792                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_set_initial_cc_param;
2793                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_hs_cwnd_update_after_sack;
2794                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_hs_cwnd_update_after_fr;
2795                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_cwnd_update_after_timeout;
2796                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_cwnd_update_after_ecn_echo;
2797                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
2798                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
2799                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_cwnd_update_after_fr_timer;
2800                                                 SCTP_TCB_UNLOCK(stcb);
2801                                                 break;
2802                                         }
2803                                         /* JRS - HTCP congestion control */
2804                                 case SCTP_CC_HTCP:
2805                                         {
2806                                                 stcb->asoc.congestion_control_module = SCTP_CC_HTCP;
2807                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_htcp_set_initial_cc_param;
2808                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_htcp_cwnd_update_after_sack;
2809                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_htcp_cwnd_update_after_fr;
2810                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_htcp_cwnd_update_after_timeout;
2811                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_htcp_cwnd_update_after_ecn_echo;
2812                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
2813                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
2814                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_htcp_cwnd_update_after_fr_timer;
2815                                                 SCTP_TCB_UNLOCK(stcb);
2816                                                 break;
2817                                         }
2818                                         /*
2819                                          * JRS - All other values are
2820                                          * invalid
2821                                          */
2822                                 default:
2823                                         {
2824                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2825                                                 error = EINVAL;
2826                                                 SCTP_TCB_UNLOCK(stcb);
2827                                                 break;
2828                                         }
2829                                 }
2830                         } else {
2831                                 switch (av->assoc_value) {
2832                                 case SCTP_CC_RFC2581:
2833                                 case SCTP_CC_HSTCP:
2834                                 case SCTP_CC_HTCP:
2835                                         inp->sctp_ep.sctp_default_cc_module = av->assoc_value;
2836                                         break;
2837                                 default:
2838                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2839                                         error = EINVAL;
2840                                         break;
2841                                 };
2842                         }
2843                 }
2844                 break;
2845         case SCTP_CLR_STAT_LOG:
2846                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
2847                 error = EOPNOTSUPP;
2848                 break;
2849         case SCTP_CONTEXT:
2850                 {
2851                         struct sctp_assoc_value *av;
2852
2853                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
2854                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
2855
2856                         if (stcb) {
2857                                 stcb->asoc.context = av->assoc_value;
2858                                 SCTP_TCB_UNLOCK(stcb);
2859                         } else {
2860                                 SCTP_INP_WLOCK(inp);
2861                                 inp->sctp_context = av->assoc_value;
2862                                 SCTP_INP_WUNLOCK(inp);
2863                         }
2864                 }
2865                 break;
2866         case SCTP_VRF_ID:
2867                 {
2868                         uint32_t *default_vrfid;
2869
2870                         SCTP_CHECK_AND_CAST(default_vrfid, optval, uint32_t, optsize);
2871                         if (*default_vrfid > SCTP_MAX_VRF_ID) {
2872                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2873                                 error = EINVAL;
2874                                 break;
2875                         }
2876                         inp->def_vrf_id = *default_vrfid;
2877                         break;
2878                 }
2879         case SCTP_DEL_VRF_ID:
2880                 {
2881                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
2882                         error = EOPNOTSUPP;
2883                         break;
2884                 }
2885         case SCTP_ADD_VRF_ID:
2886                 {
2887                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
2888                         error = EOPNOTSUPP;
2889                         break;
2890                 }
2891         case SCTP_DELAYED_SACK:
2892                 {
2893                         struct sctp_sack_info *sack;
2894
2895                         SCTP_CHECK_AND_CAST(sack, optval, struct sctp_sack_info, optsize);
2896                         SCTP_FIND_STCB(inp, stcb, sack->sack_assoc_id);
2897                         if (sack->sack_delay) {
2898                                 if (sack->sack_delay > SCTP_MAX_SACK_DELAY)
2899                                         sack->sack_delay = SCTP_MAX_SACK_DELAY;
2900                         }
2901                         if (stcb) {
2902                                 if (sack->sack_delay) {
2903                                         if (MSEC_TO_TICKS(sack->sack_delay) < 1) {
2904                                                 sack->sack_delay = TICKS_TO_MSEC(1);
2905                                         }
2906                                         stcb->asoc.delayed_ack = sack->sack_delay;
2907                                 }
2908                                 if (sack->sack_freq) {
2909                                         stcb->asoc.sack_freq = sack->sack_freq;
2910                                 }
2911                                 SCTP_TCB_UNLOCK(stcb);
2912                         } else {
2913                                 SCTP_INP_WLOCK(inp);
2914                                 if (sack->sack_delay) {
2915                                         if (MSEC_TO_TICKS(sack->sack_delay) < 1) {
2916                                                 sack->sack_delay = TICKS_TO_MSEC(1);
2917                                         }
2918                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(sack->sack_delay);
2919                                 }
2920                                 if (sack->sack_freq) {
2921                                         inp->sctp_ep.sctp_sack_freq = sack->sack_freq;
2922                                 }
2923                                 SCTP_INP_WUNLOCK(inp);
2924                         }
2925                         break;
2926                 }
2927         case SCTP_AUTH_CHUNK:
2928                 {
2929                         struct sctp_authchunk *sauth;
2930
2931                         SCTP_CHECK_AND_CAST(sauth, optval, struct sctp_authchunk, optsize);
2932
2933                         SCTP_INP_WLOCK(inp);
2934                         if (sctp_auth_add_chunk(sauth->sauth_chunk, inp->sctp_ep.local_auth_chunks)) {
2935                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
2936                                 error = EINVAL;
2937                         }
2938                         SCTP_INP_WUNLOCK(inp);
2939                         break;
2940                 }
2941         case SCTP_AUTH_KEY:
2942                 {
2943                         struct sctp_authkey *sca;
2944                         struct sctp_keyhead *shared_keys;
2945                         sctp_sharedkey_t *shared_key;
2946                         sctp_key_t *key = NULL;
2947                         size_t size;
2948
2949                         SCTP_CHECK_AND_CAST(sca, optval, struct sctp_authkey, optsize);
2950                         SCTP_FIND_STCB(inp, stcb, sca->sca_assoc_id);
2951                         size = optsize - sizeof(*sca);
2952
2953                         if (stcb) {
2954                                 /* set it on the assoc */
2955                                 shared_keys = &stcb->asoc.shared_keys;
2956                                 /* clear the cached keys for this key id */
2957                                 sctp_clear_cachedkeys(stcb, sca->sca_keynumber);
2958                                 /*
2959                                  * create the new shared key and
2960                                  * insert/replace it
2961                                  */
2962                                 if (size > 0) {
2963                                         key = sctp_set_key(sca->sca_key, (uint32_t) size);
2964                                         if (key == NULL) {
2965                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
2966                                                 error = ENOMEM;
2967                                                 SCTP_TCB_UNLOCK(stcb);
2968                                                 break;
2969                                         }
2970                                 }
2971                                 shared_key = sctp_alloc_sharedkey();
2972                                 if (shared_key == NULL) {
2973                                         sctp_free_key(key);
2974                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
2975                                         error = ENOMEM;
2976                                         SCTP_TCB_UNLOCK(stcb);
2977                                         break;
2978                                 }
2979                                 shared_key->key = key;
2980                                 shared_key->keyid = sca->sca_keynumber;
2981                                 sctp_insert_sharedkey(shared_keys, shared_key);
2982                                 SCTP_TCB_UNLOCK(stcb);
2983                         } else {
2984                                 /* set it on the endpoint */
2985                                 SCTP_INP_WLOCK(inp);
2986                                 shared_keys = &inp->sctp_ep.shared_keys;
2987                                 /*
2988                                  * clear the cached keys on all assocs for
2989                                  * this key id
2990                                  */
2991                                 sctp_clear_cachedkeys_ep(inp, sca->sca_keynumber);
2992                                 /*
2993                                  * create the new shared key and
2994                                  * insert/replace it
2995                                  */
2996                                 if (size > 0) {
2997                                         key = sctp_set_key(sca->sca_key, (uint32_t) size);
2998                                         if (key == NULL) {
2999                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
3000                                                 error = ENOMEM;
3001                                                 SCTP_INP_WUNLOCK(inp);
3002                                                 break;
3003                                         }
3004                                 }
3005                                 shared_key = sctp_alloc_sharedkey();
3006                                 if (shared_key == NULL) {
3007                                         sctp_free_key(key);
3008                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
3009                                         error = ENOMEM;
3010                                         SCTP_INP_WUNLOCK(inp);
3011                                         break;
3012                                 }
3013                                 shared_key->key = key;
3014                                 shared_key->keyid = sca->sca_keynumber;
3015                                 sctp_insert_sharedkey(shared_keys, shared_key);
3016                                 SCTP_INP_WUNLOCK(inp);
3017                         }
3018                         break;
3019                 }
3020         case SCTP_HMAC_IDENT:
3021                 {
3022                         struct sctp_hmacalgo *shmac;
3023                         sctp_hmaclist_t *hmaclist;
3024                         uint32_t hmacid;
3025                         size_t size, i, found;
3026
3027                         SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, optsize);
3028                         size = (optsize - sizeof(*shmac)) / sizeof(shmac->shmac_idents[0]);
3029                         hmaclist = sctp_alloc_hmaclist(size);
3030                         if (hmaclist == NULL) {
3031                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
3032                                 error = ENOMEM;
3033                                 break;
3034                         }
3035                         for (i = 0; i < size; i++) {
3036                                 hmacid = shmac->shmac_idents[i];
3037                                 if (sctp_auth_add_hmacid(hmaclist, (uint16_t) hmacid)) {
3038                                          /* invalid HMACs were found */ ;
3039                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3040                                         error = EINVAL;
3041                                         sctp_free_hmaclist(hmaclist);
3042                                         goto sctp_set_hmac_done;
3043                                 }
3044                         }
3045                         found = 0;
3046                         for (i = 0; i < hmaclist->num_algo; i++) {
3047                                 if (hmaclist->hmac[i] == SCTP_AUTH_HMAC_ID_SHA1) {
3048                                         /* already in list */
3049                                         found = 1;
3050                                 }
3051                         }
3052                         if (!found) {
3053                                 sctp_free_hmaclist(hmaclist);
3054                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3055                                 error = EINVAL;
3056                                 break;
3057                         }
3058                         /* set it on the endpoint */
3059                         SCTP_INP_WLOCK(inp);
3060                         if (inp->sctp_ep.local_hmacs)
3061                                 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3062                         inp->sctp_ep.local_hmacs = hmaclist;
3063                         SCTP_INP_WUNLOCK(inp);
3064         sctp_set_hmac_done:
3065                         break;
3066                 }
3067         case SCTP_AUTH_ACTIVE_KEY:
3068                 {
3069                         struct sctp_authkeyid *scact;
3070
3071                         SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, optsize);
3072                         SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id);
3073
3074                         /* set the active key on the right place */
3075                         if (stcb) {
3076                                 /* set the active key on the assoc */
3077                                 if (sctp_auth_setactivekey(stcb, scact->scact_keynumber)) {
3078                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3079                                         error = EINVAL;
3080                                 }
3081                                 SCTP_TCB_UNLOCK(stcb);
3082                         } else {
3083                                 /* set the active key on the endpoint */
3084                                 SCTP_INP_WLOCK(inp);
3085                                 if (sctp_auth_setactivekey_ep(inp, scact->scact_keynumber)) {
3086                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3087                                         error = EINVAL;
3088                                 }
3089                                 SCTP_INP_WUNLOCK(inp);
3090                         }
3091                         break;
3092                 }
3093         case SCTP_AUTH_DELETE_KEY:
3094                 {
3095                         struct sctp_authkeyid *scdel;
3096
3097                         SCTP_CHECK_AND_CAST(scdel, optval, struct sctp_authkeyid, optsize);
3098                         SCTP_FIND_STCB(inp, stcb, scdel->scact_assoc_id);
3099
3100                         /* delete the key from the right place */
3101                         if (stcb) {
3102                                 if (sctp_delete_sharedkey(stcb, scdel->scact_keynumber)) {
3103                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3104                                         error = EINVAL;
3105                                 }
3106                                 SCTP_TCB_UNLOCK(stcb);
3107                         } else {
3108                                 SCTP_INP_WLOCK(inp);
3109                                 if (sctp_delete_sharedkey_ep(inp, scdel->scact_keynumber)) {
3110                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3111                                         error = EINVAL;
3112                                 }
3113                                 SCTP_INP_WUNLOCK(inp);
3114                         }
3115                         break;
3116                 }
3117
3118         case SCTP_RESET_STREAMS:
3119                 {
3120                         struct sctp_stream_reset *strrst;
3121                         uint8_t send_in = 0, send_tsn = 0, send_out = 0;
3122                         int i;
3123
3124                         SCTP_CHECK_AND_CAST(strrst, optval, struct sctp_stream_reset, optsize);
3125                         SCTP_FIND_STCB(inp, stcb, strrst->strrst_assoc_id);
3126
3127                         if (stcb == NULL) {
3128                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
3129                                 error = ENOENT;
3130                                 break;
3131                         }
3132                         if (stcb->asoc.peer_supports_strreset == 0) {
3133                                 /*
3134                                  * Peer does not support it, we return
3135                                  * protocol not supported since this is true
3136                                  * for this feature and this peer, not the
3137                                  * socket request in general.
3138                                  */
3139                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EPROTONOSUPPORT);
3140                                 error = EPROTONOSUPPORT;
3141                                 SCTP_TCB_UNLOCK(stcb);
3142                                 break;
3143                         }
3144                         if (stcb->asoc.stream_reset_outstanding) {
3145                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
3146                                 error = EALREADY;
3147                                 SCTP_TCB_UNLOCK(stcb);
3148                                 break;
3149                         }
3150                         if (strrst->strrst_flags == SCTP_RESET_LOCAL_RECV) {
3151                                 send_in = 1;
3152                         } else if (strrst->strrst_flags == SCTP_RESET_LOCAL_SEND) {
3153                                 send_out = 1;
3154                         } else if (strrst->strrst_flags == SCTP_RESET_BOTH) {
3155                                 send_in = 1;
3156                                 send_out = 1;
3157                         } else if (strrst->strrst_flags == SCTP_RESET_TSN) {
3158                                 send_tsn = 1;
3159                         } else {
3160                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3161                                 error = EINVAL;
3162                                 SCTP_TCB_UNLOCK(stcb);
3163                                 break;
3164                         }
3165                         for (i = 0; i < strrst->strrst_num_streams; i++) {
3166                                 if ((send_in) &&
3167
3168                                     (strrst->strrst_list[i] > stcb->asoc.streamincnt)) {
3169                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3170                                         error = EINVAL;
3171                                         goto get_out;
3172                                 }
3173                                 if ((send_out) &&
3174                                     (strrst->strrst_list[i] > stcb->asoc.streamoutcnt)) {
3175                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3176                                         error = EINVAL;
3177                                         goto get_out;
3178                                 }
3179                         }
3180                         if (error) {
3181                 get_out:
3182                                 SCTP_TCB_UNLOCK(stcb);
3183                                 break;
3184                         }
3185                         error = sctp_send_str_reset_req(stcb, strrst->strrst_num_streams,
3186                             strrst->strrst_list,
3187                             send_out, (stcb->asoc.str_reset_seq_in - 3),
3188                             send_in, send_tsn);
3189
3190                         sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_REQ, SCTP_SO_LOCKED);
3191                         SCTP_TCB_UNLOCK(stcb);
3192                 }
3193                 break;
3194
3195         case SCTP_CONNECT_X:
3196                 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) {
3197                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3198                         error = EINVAL;
3199                         break;
3200                 }
3201                 error = sctp_do_connect_x(so, inp, optval, optsize, p, 0);
3202                 break;
3203
3204         case SCTP_CONNECT_X_DELAYED:
3205                 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) {
3206                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3207                         error = EINVAL;
3208                         break;
3209                 }
3210                 error = sctp_do_connect_x(so, inp, optval, optsize, p, 1);
3211                 break;
3212
3213         case SCTP_CONNECT_X_COMPLETE:
3214                 {
3215                         struct sockaddr *sa;
3216                         struct sctp_nets *net;
3217
3218                         /* FIXME MT: check correct? */
3219                         SCTP_CHECK_AND_CAST(sa, optval, struct sockaddr, optsize);
3220
3221                         /* find tcb */
3222                         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
3223                                 SCTP_INP_RLOCK(inp);
3224                                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
3225                                 if (stcb) {
3226                                         SCTP_TCB_LOCK(stcb);
3227                                         net = sctp_findnet(stcb, sa);
3228                                 }
3229                                 SCTP_INP_RUNLOCK(inp);
3230                         } else {
3231                                 /*
3232                                  * We increment here since
3233                                  * sctp_findassociation_ep_addr() wil do a
3234                                  * decrement if it finds the stcb as long as
3235                                  * the locked tcb (last argument) is NOT a
3236                                  * TCB.. aka NULL.
3237                                  */
3238                                 SCTP_INP_INCR_REF(inp);
3239                                 stcb = sctp_findassociation_ep_addr(&inp, sa, &net, NULL, NULL);
3240                                 if (stcb == NULL) {
3241                                         SCTP_INP_DECR_REF(inp);
3242                                 }
3243                         }
3244
3245                         if (stcb == NULL) {
3246                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
3247                                 error = ENOENT;
3248                                 break;
3249                         }
3250                         if (stcb->asoc.delayed_connection == 1) {
3251                                 stcb->asoc.delayed_connection = 0;
3252                                 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
3253                                 sctp_timer_stop(SCTP_TIMER_TYPE_INIT, inp, stcb,
3254                                     stcb->asoc.primary_destination,
3255                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_9);
3256                                 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
3257                         } else {
3258                                 /*
3259                                  * already expired or did not use delayed
3260                                  * connectx
3261                                  */
3262                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
3263                                 error = EALREADY;
3264                         }
3265                         SCTP_TCB_UNLOCK(stcb);
3266                 }
3267                 break;
3268         case SCTP_MAX_BURST:
3269                 {
3270                         uint8_t *burst;
3271
3272                         SCTP_CHECK_AND_CAST(burst, optval, uint8_t, optsize);
3273
3274                         SCTP_INP_WLOCK(inp);
3275                         if (*burst) {
3276                                 inp->sctp_ep.max_burst = *burst;
3277                         }
3278                         SCTP_INP_WUNLOCK(inp);
3279                 }
3280                 break;
3281         case SCTP_MAXSEG:
3282                 {
3283                         struct sctp_assoc_value *av;
3284                         int ovh;
3285
3286                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
3287                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
3288
3289                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
3290                                 ovh = SCTP_MED_OVERHEAD;
3291                         } else {
3292                                 ovh = SCTP_MED_V4_OVERHEAD;
3293                         }
3294                         if (stcb) {
3295                                 if (av->assoc_value) {
3296                                         stcb->asoc.sctp_frag_point = (av->assoc_value + ovh);
3297                                 } else {
3298                                         stcb->asoc.sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
3299                                 }
3300                                 SCTP_TCB_UNLOCK(stcb);
3301                         } else {
3302                                 SCTP_INP_WLOCK(inp);
3303                                 /*
3304                                  * FIXME MT: I think this is not in tune
3305                                  * with the API ID
3306                                  */
3307                                 if (av->assoc_value) {
3308                                         inp->sctp_frag_point = (av->assoc_value + ovh);
3309                                 } else {
3310                                         inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
3311                                 }
3312                                 SCTP_INP_WUNLOCK(inp);
3313                         }
3314                 }
3315                 break;
3316         case SCTP_EVENTS:
3317                 {
3318                         struct sctp_event_subscribe *events;
3319
3320                         SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, optsize);
3321
3322                         SCTP_INP_WLOCK(inp);
3323                         if (events->sctp_data_io_event) {
3324                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
3325                         } else {
3326                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
3327                         }
3328
3329                         if (events->sctp_association_event) {
3330                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
3331                         } else {
3332                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
3333                         }
3334
3335                         if (events->sctp_address_event) {
3336                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
3337                         } else {
3338                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
3339                         }
3340
3341                         if (events->sctp_send_failure_event) {
3342                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
3343                         } else {
3344                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
3345                         }
3346
3347                         if (events->sctp_peer_error_event) {
3348                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR);
3349                         } else {
3350                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPEERERR);
3351                         }
3352
3353                         if (events->sctp_shutdown_event) {
3354                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
3355                         } else {
3356                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
3357                         }
3358
3359                         if (events->sctp_partial_delivery_event) {
3360                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
3361                         } else {
3362                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
3363                         }
3364
3365                         if (events->sctp_adaptation_layer_event) {
3366                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
3367                         } else {
3368                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
3369                         }
3370
3371                         if (events->sctp_authentication_event) {
3372                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT);
3373                         } else {
3374                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTHEVNT);
3375                         }
3376
3377                         if (events->sctp_stream_reset_events) {
3378                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
3379                         } else {
3380                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
3381                         }
3382                         SCTP_INP_WUNLOCK(inp);
3383                 }
3384                 break;
3385
3386         case SCTP_ADAPTATION_LAYER:
3387                 {
3388                         struct sctp_setadaptation *adap_bits;
3389
3390                         SCTP_CHECK_AND_CAST(adap_bits, optval, struct sctp_setadaptation, optsize);
3391                         SCTP_INP_WLOCK(inp);
3392                         inp->sctp_ep.adaptation_layer_indicator = adap_bits->ssb_adaptation_ind;
3393                         SCTP_INP_WUNLOCK(inp);
3394                 }
3395                 break;
3396 #ifdef SCTP_DEBUG
3397         case SCTP_SET_INITIAL_DBG_SEQ:
3398                 {
3399                         uint32_t *vvv;
3400
3401                         SCTP_CHECK_AND_CAST(vvv, optval, uint32_t, optsize);
3402                         SCTP_INP_WLOCK(inp);
3403                         inp->sctp_ep.initial_sequence_debug = *vvv;
3404                         SCTP_INP_WUNLOCK(inp);
3405                 }
3406                 break;
3407 #endif
3408         case SCTP_DEFAULT_SEND_PARAM:
3409                 {
3410                         struct sctp_sndrcvinfo *s_info;
3411
3412                         SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, optsize);
3413                         SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id);
3414
3415                         if (stcb) {
3416                                 if (s_info->sinfo_stream <= stcb->asoc.streamoutcnt) {
3417                                         memcpy(&stcb->asoc.def_send, s_info, min(optsize, sizeof(stcb->asoc.def_send)));
3418                                 } else {
3419                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3420                                         error = EINVAL;
3421                                 }
3422                                 SCTP_TCB_UNLOCK(stcb);
3423                         } else {
3424                                 SCTP_INP_WLOCK(inp);
3425                                 memcpy(&inp->def_send, s_info, min(optsize, sizeof(inp->def_send)));
3426                                 SCTP_INP_WUNLOCK(inp);
3427                         }
3428                 }
3429                 break;
3430         case SCTP_PEER_ADDR_PARAMS:
3431                 /* Applys to the specific association */
3432                 {
3433                         struct sctp_paddrparams *paddrp;
3434                         struct sctp_nets *net;
3435
3436                         SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, optsize);
3437                         SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id);
3438                         net = NULL;
3439                         if (stcb) {
3440                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address);
3441                         } else {
3442                                 /*
3443                                  * We increment here since
3444                                  * sctp_findassociation_ep_addr() wil do a
3445                                  * decrement if it finds the stcb as long as
3446                                  * the locked tcb (last argument) is NOT a
3447                                  * TCB.. aka NULL.
3448                                  */
3449                                 SCTP_INP_INCR_REF(inp);
3450                                 stcb = sctp_findassociation_ep_addr(&inp,
3451                                     (struct sockaddr *)&paddrp->spp_address,
3452                                     &net, NULL, NULL);
3453                                 if (stcb == NULL) {
3454                                         SCTP_INP_DECR_REF(inp);
3455                                 }
3456                         }
3457                         if (stcb && (net == NULL)) {
3458                                 struct sockaddr *sa;
3459
3460                                 sa = (struct sockaddr *)&paddrp->spp_address;
3461                                 if (sa->sa_family == AF_INET) {
3462                                         struct sockaddr_in *sin;
3463
3464                                         sin = (struct sockaddr_in *)sa;
3465                                         if (sin->sin_addr.s_addr) {
3466                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3467                                                 SCTP_TCB_UNLOCK(stcb);
3468                                                 error = EINVAL;
3469                                                 break;
3470                                         }
3471                                 } else if (sa->sa_family == AF_INET6) {
3472                                         struct sockaddr_in6 *sin6;
3473
3474                                         sin6 = (struct sockaddr_in6 *)sa;
3475                                         if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3476                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3477                                                 SCTP_TCB_UNLOCK(stcb);
3478                                                 error = EINVAL;
3479                                                 break;
3480                                         }
3481                                 } else {
3482                                         error = EAFNOSUPPORT;
3483                                         SCTP_TCB_UNLOCK(stcb);
3484                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
3485                                         break;
3486                                 }
3487                         }
3488                         /* sanity checks */
3489                         if ((paddrp->spp_flags & SPP_HB_ENABLE) && (paddrp->spp_flags & SPP_HB_DISABLE)) {
3490                                 if (stcb)
3491                                         SCTP_TCB_UNLOCK(stcb);
3492                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3493                                 return (EINVAL);
3494                         }
3495                         if ((paddrp->spp_flags & SPP_PMTUD_ENABLE) && (paddrp->spp_flags & SPP_PMTUD_DISABLE)) {
3496                                 if (stcb)
3497                                         SCTP_TCB_UNLOCK(stcb);
3498                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3499                                 return (EINVAL);
3500                         }
3501                         if (stcb) {
3502                                 /************************TCB SPECIFIC SET ******************/
3503                                 /*
3504                                  * do we change the timer for HB, we run
3505                                  * only one?
3506                                  */
3507                                 int ovh = 0;
3508
3509                                 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
3510                                         ovh = SCTP_MED_OVERHEAD;
3511                                 } else {
3512                                         ovh = SCTP_MED_V4_OVERHEAD;
3513                                 }
3514
3515                                 if (paddrp->spp_hbinterval)
3516                                         stcb->asoc.heart_beat_delay = paddrp->spp_hbinterval;
3517                                 else if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO)
3518                                         stcb->asoc.heart_beat_delay = 0;
3519
3520                                 /* network sets ? */
3521                                 if (net) {
3522                                         /************************NET SPECIFIC SET ******************/
3523                                         if (paddrp->spp_flags & SPP_HB_DEMAND) {
3524                                                 /* on demand HB */
3525                                                 if (sctp_send_hb(stcb, 1, net) < 0) {
3526                                                         /* asoc destroyed */
3527                                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3528                                                         error = EINVAL;
3529                                                         break;
3530                                                 }
3531                                         }
3532                                         if (paddrp->spp_flags & SPP_HB_DISABLE) {
3533                                                 net->dest_state |= SCTP_ADDR_NOHB;
3534                                         }
3535                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3536                                                 net->dest_state &= ~SCTP_ADDR_NOHB;
3537                                         }
3538                                         if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && (paddrp->spp_pathmtu >= SCTP_SMALLEST_PMTU)) {
3539                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3540                                                         sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
3541                                                             SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10);
3542                                                 }
3543                                                 if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) {
3544                                                         net->mtu = paddrp->spp_pathmtu + ovh;
3545                                                         if (net->mtu < stcb->asoc.smallest_mtu) {
3546 #ifdef SCTP_PRINT_FOR_B_AND_M
3547                                                                 SCTP_PRINTF("SCTP_PMTU_DISABLE calls sctp_pathmtu_adjustment:%d\n",
3548                                                                     net->mtu);
3549 #endif
3550                                                                 sctp_pathmtu_adjustment(inp, stcb, net, net->mtu);
3551                                                         }
3552                                                 }
3553                                         }
3554                                         if (paddrp->spp_flags & SPP_PMTUD_ENABLE) {
3555                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3556                                                         sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
3557                                                 }
3558                                         }
3559                                         if (paddrp->spp_pathmaxrxt)
3560                                                 net->failure_threshold = paddrp->spp_pathmaxrxt;
3561 #ifdef INET
3562                                         if (paddrp->spp_flags & SPP_IPV4_TOS) {
3563                                                 if (net->ro._l_addr.sin.sin_family == AF_INET) {
3564                                                         net->tos_flowlabel = paddrp->spp_ipv4_tos & 0x000000fc;
3565                                                 }
3566                                         }
3567 #endif
3568 #ifdef INET6
3569                                         if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL) {
3570                                                 if (net->ro._l_addr.sin6.sin6_family == AF_INET6) {
3571                                                         net->tos_flowlabel = paddrp->spp_ipv6_flowlabel;
3572                                                 }
3573                                         }
3574 #endif
3575                                 } else {
3576                                         /************************ASSOC ONLY -- NO NET SPECIFIC SET ******************/
3577                                         if (paddrp->spp_pathmaxrxt)
3578                                                 stcb->asoc.def_net_failure = paddrp->spp_pathmaxrxt;
3579
3580                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3581                                                 /* Turn back on the timer */
3582                                                 stcb->asoc.hb_is_disabled = 0;
3583                                                 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
3584                                         }
3585                                         if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && (paddrp->spp_pathmtu >= SCTP_SMALLEST_PMTU)) {
3586                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3587                                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3588                                                                 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
3589                                                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10);
3590                                                         }
3591                                                         if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) {
3592                                                                 net->mtu = paddrp->spp_pathmtu + ovh;
3593                                                                 if (net->mtu < stcb->asoc.smallest_mtu) {
3594 #ifdef SCTP_PRINT_FOR_B_AND_M
3595                                                                         SCTP_PRINTF("SCTP_PMTU_DISABLE calls sctp_pathmtu_adjustment:%d\n",
3596                                                                             net->mtu);
3597 #endif
3598                                                                         sctp_pathmtu_adjustment(inp, stcb, net, net->mtu);
3599                                                                 }
3600                                                         }
3601                                                 }
3602                                         }
3603                                         if (paddrp->spp_flags & SPP_PMTUD_ENABLE) {
3604                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3605                                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
3606                                                                 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
3607                                                         }
3608                                                 }
3609                                         }
3610                                         if (paddrp->spp_flags & SPP_HB_DISABLE) {
3611                                                 int cnt_of_unconf = 0;
3612                                                 struct sctp_nets *lnet;
3613
3614                                                 stcb->asoc.hb_is_disabled = 1;
3615                                                 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
3616                                                         if (lnet->dest_state & SCTP_ADDR_UNCONFIRMED) {
3617                                                                 cnt_of_unconf++;
3618                                                         }
3619                                                 }
3620                                                 /*
3621                                                  * stop the timer ONLY if we
3622                                                  * have no unconfirmed
3623                                                  * addresses
3624                                                  */
3625                                                 if (cnt_of_unconf == 0) {
3626                                                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3627                                                                 sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net,
3628                                                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_11);
3629                                                         }
3630                                                 }
3631                                         }
3632                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
3633                                                 /* start up the timer. */
3634                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3635                                                         sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
3636                                                 }
3637                                         }
3638 #ifdef INET
3639                                         if (paddrp->spp_flags & SPP_IPV4_TOS)
3640                                                 stcb->asoc.default_tos = paddrp->spp_ipv4_tos & 0x000000fc;
3641 #endif
3642 #ifdef INET6
3643                                         if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL)
3644                                                 stcb->asoc.default_flowlabel = paddrp->spp_ipv6_flowlabel;
3645 #endif
3646
3647                                 }
3648                                 SCTP_TCB_UNLOCK(stcb);
3649                         } else {
3650                                 /************************NO TCB, SET TO default stuff ******************/
3651                                 SCTP_INP_WLOCK(inp);
3652                                 /*
3653                                  * For the TOS/FLOWLABEL stuff you set it
3654                                  * with the options on the socket
3655                                  */
3656                                 if (paddrp->spp_pathmaxrxt) {
3657                                         inp->sctp_ep.def_net_failure = paddrp->spp_pathmaxrxt;
3658                                 }
3659                                 if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO)
3660                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = 0;
3661                                 else if (paddrp->spp_hbinterval) {
3662                                         if (paddrp->spp_hbinterval > SCTP_MAX_HB_INTERVAL)
3663                                                 paddrp->spp_hbinterval = SCTP_MAX_HB_INTERVAL;
3664                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(paddrp->spp_hbinterval);
3665                                 }
3666                                 if (paddrp->spp_flags & SPP_HB_ENABLE) {
3667                                         sctp_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
3668
3669                                 } else if (paddrp->spp_flags & SPP_HB_DISABLE) {
3670                                         sctp_feature_on(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
3671                                 }
3672                                 SCTP_INP_WUNLOCK(inp);
3673                         }
3674                 }
3675                 break;
3676         case SCTP_RTOINFO:
3677                 {
3678                         struct sctp_rtoinfo *srto;
3679                         uint32_t new_init, new_min, new_max;
3680
3681                         SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, optsize);
3682                         SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id);
3683
3684                         if (stcb) {
3685                                 if (srto->srto_initial)
3686                                         new_init = srto->srto_initial;
3687                                 else
3688                                         new_init = stcb->asoc.initial_rto;
3689                                 if (srto->srto_max)
3690                                         new_max = srto->srto_max;
3691                                 else
3692                                         new_max = stcb->asoc.maxrto;
3693                                 if (srto->srto_min)
3694                                         new_min = srto->srto_min;
3695                                 else
3696                                         new_min = stcb->asoc.minrto;
3697                                 if ((new_min <= new_init) && (new_init <= new_max)) {
3698                                         stcb->asoc.initial_rto = new_init;
3699                                         stcb->asoc.maxrto = new_max;
3700                                         stcb->asoc.minrto = new_min;
3701                                 } else {
3702                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EDOM);
3703                                         error = EDOM;
3704                                 }
3705                                 SCTP_TCB_UNLOCK(stcb);
3706                         } else {
3707                                 SCTP_INP_WLOCK(inp);
3708                                 if (srto->srto_initial)
3709                                         new_init = srto->srto_initial;
3710                                 else
3711                                         new_init = inp->sctp_ep.initial_rto;
3712                                 if (srto->srto_max)
3713                                         new_max = srto->srto_max;
3714                                 else
3715                                         new_max = inp->sctp_ep.sctp_maxrto;
3716                                 if (srto->srto_min)
3717                                         new_min = srto->srto_min;
3718                                 else
3719                                         new_min = inp->sctp_ep.sctp_minrto;
3720                                 if ((new_min <= new_init) && (new_init <= new_max)) {
3721                                         inp->sctp_ep.initial_rto = new_init;
3722                                         inp->sctp_ep.sctp_maxrto = new_max;
3723                                         inp->sctp_ep.sctp_minrto = new_min;
3724                                 } else {
3725                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EDOM);
3726                                         error = EDOM;
3727                                 }
3728                                 SCTP_INP_WUNLOCK(inp);
3729                         }
3730                 }
3731                 break;
3732         case SCTP_ASSOCINFO:
3733                 {
3734                         struct sctp_assocparams *sasoc;
3735
3736                         SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, optsize);
3737                         SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id);
3738                         if (sasoc->sasoc_cookie_life) {
3739                                 /* boundary check the cookie life */
3740                                 if (sasoc->sasoc_cookie_life < 1000)
3741                                         sasoc->sasoc_cookie_life = 1000;
3742                                 if (sasoc->sasoc_cookie_life > SCTP_MAX_COOKIE_LIFE) {
3743                                         sasoc->sasoc_cookie_life = SCTP_MAX_COOKIE_LIFE;
3744                                 }
3745                         }
3746                         if (stcb) {
3747                                 if (sasoc->sasoc_asocmaxrxt)
3748                                         stcb->asoc.max_send_times = sasoc->sasoc_asocmaxrxt;
3749                                 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets;
3750                                 sasoc->sasoc_peer_rwnd = 0;
3751                                 sasoc->sasoc_local_rwnd = 0;
3752                                 if (sasoc->sasoc_cookie_life) {
3753                                         stcb->asoc.cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life);
3754                                 }
3755                                 SCTP_TCB_UNLOCK(stcb);
3756                         } else {
3757                                 SCTP_INP_WLOCK(inp);
3758                                 if (sasoc->sasoc_asocmaxrxt)
3759                                         inp->sctp_ep.max_send_times = sasoc->sasoc_asocmaxrxt;
3760                                 sasoc->sasoc_number_peer_destinations = 0;
3761                                 sasoc->sasoc_peer_rwnd = 0;
3762                                 sasoc->sasoc_local_rwnd = 0;
3763                                 if (sasoc->sasoc_cookie_life) {
3764                                         inp->sctp_ep.def_cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life);
3765                                 }
3766                                 SCTP_INP_WUNLOCK(inp);
3767                         }
3768                 }
3769                 break;
3770         case SCTP_INITMSG:
3771                 {
3772                         struct sctp_initmsg *sinit;
3773
3774                         SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, optsize);
3775                         SCTP_INP_WLOCK(inp);
3776                         if (sinit->sinit_num_ostreams)
3777                                 inp->sctp_ep.pre_open_stream_count = sinit->sinit_num_ostreams;
3778
3779                         if (sinit->sinit_max_instreams)
3780                                 inp->sctp_ep.max_open_streams_intome = sinit->sinit_max_instreams;
3781
3782                         if (sinit->sinit_max_attempts)
3783                                 inp->sctp_ep.max_init_times = sinit->sinit_max_attempts;
3784
3785                         if (sinit->sinit_max_init_timeo)
3786                                 inp->sctp_ep.initial_init_rto_max = sinit->sinit_max_init_timeo;
3787                         SCTP_INP_WUNLOCK(inp);
3788                 }
3789                 break;
3790         case SCTP_PRIMARY_ADDR:
3791                 {
3792                         struct sctp_setprim *spa;
3793                         struct sctp_nets *net, *lnet;
3794
3795                         SCTP_CHECK_AND_CAST(spa, optval, struct sctp_setprim, optsize);
3796                         SCTP_FIND_STCB(inp, stcb, spa->ssp_assoc_id);
3797
3798                         net = NULL;
3799                         if (stcb) {
3800                                 net = sctp_findnet(stcb, (struct sockaddr *)&spa->ssp_addr);
3801                         } else {
3802                                 /*
3803                                  * We increment here since
3804                                  * sctp_findassociation_ep_addr() wil do a
3805                                  * decrement if it finds the stcb as long as
3806                                  * the locked tcb (last argument) is NOT a
3807                                  * TCB.. aka NULL.
3808                                  */
3809                                 SCTP_INP_INCR_REF(inp);
3810                                 stcb = sctp_findassociation_ep_addr(&inp,
3811                                     (struct sockaddr *)&spa->ssp_addr,
3812                                     &net, NULL, NULL);
3813                                 if (stcb == NULL) {
3814                                         SCTP_INP_DECR_REF(inp);
3815                                 }
3816                         }
3817
3818                         if ((stcb) && (net)) {
3819                                 if ((net != stcb->asoc.primary_destination) &&
3820                                     (!(net->dest_state & SCTP_ADDR_UNCONFIRMED))) {
3821                                         /* Ok we need to set it */
3822                                         lnet = stcb->asoc.primary_destination;
3823                                         if (sctp_set_primary_addr(stcb, (struct sockaddr *)NULL, net) == 0) {
3824                                                 if (net->dest_state & SCTP_ADDR_SWITCH_PRIMARY) {
3825                                                         net->dest_state |= SCTP_ADDR_DOUBLE_SWITCH;
3826                                                 }
3827                                                 net->dest_state |= SCTP_ADDR_SWITCH_PRIMARY;
3828                                         }
3829                                 }
3830                         } else {
3831                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3832                                 error = EINVAL;
3833                         }
3834                         if (stcb) {
3835                                 SCTP_TCB_UNLOCK(stcb);
3836                         }
3837                 }
3838                 break;
3839         case SCTP_SET_DYNAMIC_PRIMARY:
3840                 {
3841                         union sctp_sockstore *ss;
3842
3843                         error = priv_check(curthread,
3844                             PRIV_NETINET_RESERVEDPORT);
3845                         if (error)
3846                                 break;
3847
3848                         SCTP_CHECK_AND_CAST(ss, optval, union sctp_sockstore, optsize);
3849                         /* SUPER USER CHECK? */
3850                         error = sctp_dynamic_set_primary(&ss->sa, vrf_id);
3851                 }
3852                 break;
3853         case SCTP_SET_PEER_PRIMARY_ADDR:
3854                 {
3855                         struct sctp_setpeerprim *sspp;
3856
3857                         SCTP_CHECK_AND_CAST(sspp, optval, struct sctp_setpeerprim, optsize);
3858                         SCTP_FIND_STCB(inp, stcb, sspp->sspp_assoc_id);
3859                         if (stcb != NULL) {
3860                                 struct sctp_ifa *ifa;
3861
3862                                 ifa = sctp_find_ifa_by_addr((struct sockaddr *)&sspp->sspp_addr,
3863                                     stcb->asoc.vrf_id, SCTP_ADDR_NOT_LOCKED);
3864                                 if (ifa == NULL) {
3865                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3866                                         error = EINVAL;
3867                                         goto out_of_it;
3868                                 }
3869                                 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
3870                                         /*
3871                                          * Must validate the ifa found is in
3872                                          * our ep
3873                                          */
3874                                         struct sctp_laddr *laddr;
3875                                         int found = 0;
3876
3877                                         LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
3878                                                 if (laddr->ifa == NULL) {
3879                                                         SCTPDBG(SCTP_DEBUG_OUTPUT1, "%s: NULL ifa\n",
3880                                                             __FUNCTION__);
3881                                                         continue;
3882                                                 }
3883                                                 if (laddr->ifa == ifa) {
3884                                                         found = 1;
3885                                                         break;
3886                                                 }
3887                                         }
3888                                         if (!found) {
3889                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3890                                                 error = EINVAL;
3891                                                 goto out_of_it;
3892                                         }
3893                                 }
3894                                 if (sctp_set_primary_ip_address_sa(stcb,
3895                                     (struct sockaddr *)&sspp->sspp_addr) != 0) {
3896                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3897                                         error = EINVAL;
3898                                 }
3899                 out_of_it:
3900                                 SCTP_TCB_UNLOCK(stcb);
3901                         } else {
3902                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3903                                 error = EINVAL;
3904                         }
3905
3906                 }
3907                 break;
3908         case SCTP_BINDX_ADD_ADDR:
3909                 {
3910                         struct sctp_getaddresses *addrs;
3911                         size_t sz;
3912                         struct thread *td;
3913                         int prison = 0;
3914
3915                         td = (struct thread *)p;
3916                         if (jailed(td->td_ucred)) {
3917                                 prison = 1;
3918                         }
3919                         SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses,
3920                             optsize);
3921                         if (addrs->addr->sa_family == AF_INET) {
3922                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in);
3923                                 if (optsize < sz) {
3924                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3925                                         error = EINVAL;
3926                                         break;
3927                                 }
3928                                 if (prison && prison_ip(td->td_ucred, 0, &(((struct sockaddr_in *)(addrs->addr))->sin_addr.s_addr))) {
3929                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRNOTAVAIL);
3930                                         error = EADDRNOTAVAIL;
3931                                 }
3932                         } else if (addrs->addr->sa_family == AF_INET6) {
3933                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in6);
3934                                 if (optsize < sz) {
3935                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3936                                         error = EINVAL;
3937                                         break;
3938                                 }
3939                                 /* JAIL XXXX Add else here for V6 */
3940                         }
3941                         sctp_bindx_add_address(so, inp, addrs->addr,
3942                             addrs->sget_assoc_id, vrf_id,
3943                             &error, p);
3944                 }
3945                 break;
3946         case SCTP_BINDX_REM_ADDR:
3947                 {
3948                         struct sctp_getaddresses *addrs;
3949                         size_t sz;
3950                         struct thread *td;
3951                         int prison = 0;
3952
3953                         td = (struct thread *)p;
3954                         if (jailed(td->td_ucred)) {
3955                                 prison = 1;
3956                         }
3957                         SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses, optsize);
3958                         if (addrs->addr->sa_family == AF_INET) {
3959                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in);
3960                                 if (optsize < sz) {
3961                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3962                                         error = EINVAL;
3963                                         break;
3964                                 }
3965                                 if (prison && prison_ip(td->td_ucred, 0, &(((struct sockaddr_in *)(addrs->addr))->sin_addr.s_addr))) {
3966                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRNOTAVAIL);
3967                                         error = EADDRNOTAVAIL;
3968                                 }
3969                         } else if (addrs->addr->sa_family == AF_INET6) {
3970                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in6);
3971                                 if (optsize < sz) {
3972                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
3973                                         error = EINVAL;
3974                                         break;
3975                                 }
3976                                 /* JAIL XXXX Add else here for V6 */
3977                         }
3978                         sctp_bindx_delete_address(so, inp, addrs->addr,
3979                             addrs->sget_assoc_id, vrf_id,
3980                             &error);
3981                 }
3982                 break;
3983         default:
3984                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
3985                 error = ENOPROTOOPT;
3986                 break;
3987         }                       /* end switch (opt) */
3988         return (error);
3989 }
3990
3991
3992 int
3993 sctp_ctloutput(struct socket *so, struct sockopt *sopt)
3994 {
3995         void *optval = NULL;
3996         size_t optsize = 0;
3997         struct sctp_inpcb *inp;
3998         void *p;
3999         int error = 0;
4000
4001         inp = (struct sctp_inpcb *)so->so_pcb;
4002         if (inp == 0) {
4003                 /* I made the same as TCP since we are not setup? */
4004                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4005                 return (ECONNRESET);
4006         }
4007         if (sopt->sopt_level != IPPROTO_SCTP) {
4008                 /* wrong proto level... send back up to IP */
4009 #ifdef INET6
4010                 if (INP_CHECK_SOCKAF(so, AF_INET6))
4011                         error = ip6_ctloutput(so, sopt);
4012                 else
4013 #endif                          /* INET6 */
4014                         error = ip_ctloutput(so, sopt);
4015                 return (error);
4016         }
4017         optsize = sopt->sopt_valsize;
4018         if (optsize) {
4019                 SCTP_MALLOC(optval, void *, optsize, SCTP_M_SOCKOPT);
4020                 if (optval == NULL) {
4021                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOBUFS);
4022                         return (ENOBUFS);
4023                 }
4024                 error = sooptcopyin(sopt, optval, optsize, optsize);
4025                 if (error) {
4026                         SCTP_FREE(optval, SCTP_M_SOCKOPT);
4027                         goto out;
4028                 }
4029         }
4030         p = (void *)sopt->sopt_td;
4031         if (sopt->sopt_dir == SOPT_SET) {
4032                 error = sctp_setopt(so, sopt->sopt_name, optval, optsize, p);
4033         } else if (sopt->sopt_dir == SOPT_GET) {
4034                 error = sctp_getopt(so, sopt->sopt_name, optval, &optsize, p);
4035         } else {
4036                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4037                 error = EINVAL;
4038         }
4039         if ((error == 0) && (optval != NULL)) {
4040                 error = sooptcopyout(sopt, optval, optsize);
4041                 SCTP_FREE(optval, SCTP_M_SOCKOPT);
4042         } else if (optval != NULL) {
4043                 SCTP_FREE(optval, SCTP_M_SOCKOPT);
4044         }
4045 out:
4046         return (error);
4047 }
4048
4049
4050 static int
4051 sctp_connect(struct socket *so, struct sockaddr *addr, struct thread *p)
4052 {
4053         int error = 0;
4054         int create_lock_on = 0;
4055         uint32_t vrf_id;
4056         struct sctp_inpcb *inp;
4057         struct sctp_tcb *stcb = NULL;
4058
4059         inp = (struct sctp_inpcb *)so->so_pcb;
4060         if (inp == 0) {
4061                 /* I made the same as TCP since we are not setup? */
4062                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4063                 return (ECONNRESET);
4064         }
4065         if (addr == NULL) {
4066                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4067                 return EINVAL;
4068         }
4069         if ((addr->sa_family == AF_INET6) && (addr->sa_len != sizeof(struct sockaddr_in6))) {
4070                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4071                 return (EINVAL);
4072         }
4073         if ((addr->sa_family == AF_INET) && (addr->sa_len != sizeof(struct sockaddr_in))) {
4074                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4075                 return (EINVAL);
4076         }
4077         SCTP_INP_INCR_REF(inp);
4078         SCTP_ASOC_CREATE_LOCK(inp);
4079         create_lock_on = 1;
4080
4081
4082         if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4083             (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4084                 /* Should I really unlock ? */
4085                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EFAULT);
4086                 error = EFAULT;
4087                 goto out_now;
4088         }
4089 #ifdef INET6
4090         if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) &&
4091             (addr->sa_family == AF_INET6)) {
4092                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4093                 error = EINVAL;
4094                 goto out_now;
4095         }
4096 #endif                          /* INET6 */
4097         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
4098             SCTP_PCB_FLAGS_UNBOUND) {
4099                 /* Bind a ephemeral port */
4100                 error = sctp_inpcb_bind(so, NULL, NULL, p);
4101                 if (error) {
4102                         goto out_now;
4103                 }
4104         }
4105         /* Now do we connect? */
4106         if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
4107                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4108                 error = EINVAL;
4109                 goto out_now;
4110         }
4111         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
4112             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
4113                 /* We are already connected AND the TCP model */
4114                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
4115                 error = EADDRINUSE;
4116                 goto out_now;
4117         }
4118         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4119                 SCTP_INP_RLOCK(inp);
4120                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
4121                 SCTP_INP_RUNLOCK(inp);
4122         } else {
4123                 /*
4124                  * We increment here since sctp_findassociation_ep_addr()
4125                  * wil do a decrement if it finds the stcb as long as the
4126                  * locked tcb (last argument) is NOT a TCB.. aka NULL.
4127                  */
4128                 SCTP_INP_INCR_REF(inp);
4129                 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL);
4130                 if (stcb == NULL) {
4131                         SCTP_INP_DECR_REF(inp);
4132                 } else {
4133                         SCTP_TCB_UNLOCK(stcb);
4134                 }
4135         }
4136         if (stcb != NULL) {
4137                 /* Already have or am bring up an association */
4138                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
4139                 error = EALREADY;
4140                 goto out_now;
4141         }
4142         vrf_id = inp->def_vrf_id;
4143         /* We are GOOD to go */
4144         stcb = sctp_aloc_assoc(inp, addr, 1, &error, 0, vrf_id, p);
4145         if (stcb == NULL) {
4146                 /* Gak! no memory */
4147                 goto out_now;
4148         }
4149         if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
4150                 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
4151                 /* Set the connected flag so we can queue data */
4152                 soisconnecting(so);
4153         }
4154         SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_COOKIE_WAIT);
4155         (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
4156
4157         /* initialize authentication parameters for the assoc */
4158         sctp_initialize_auth_params(inp, stcb);
4159
4160         sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
4161         SCTP_TCB_UNLOCK(stcb);
4162 out_now:
4163         if (create_lock_on) {
4164                 SCTP_ASOC_CREATE_UNLOCK(inp);
4165         }
4166         SCTP_INP_DECR_REF(inp);
4167         return error;
4168 }
4169
4170 int
4171 sctp_listen(struct socket *so, int backlog, struct thread *p)
4172 {
4173         /*
4174          * Note this module depends on the protocol processing being called
4175          * AFTER any socket level flags and backlog are applied to the
4176          * socket. The traditional way that the socket flags are applied is
4177          * AFTER protocol processing. We have made a change to the
4178          * sys/kern/uipc_socket.c module to reverse this but this MUST be in
4179          * place if the socket API for SCTP is to work properly.
4180          */
4181
4182         int error = 0;
4183         struct sctp_inpcb *inp;
4184
4185         inp = (struct sctp_inpcb *)so->so_pcb;
4186         if (inp == 0) {
4187                 /* I made the same as TCP since we are not setup? */
4188                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4189                 return (ECONNRESET);
4190         }
4191         SCTP_INP_RLOCK(inp);
4192 #ifdef SCTP_LOCK_LOGGING
4193         if (sctp_logging_level & SCTP_LOCK_LOGGING_ENABLE) {
4194                 sctp_log_lock(inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_SOCK);
4195         }
4196 #endif
4197         SOCK_LOCK(so);
4198         error = solisten_proto_check(so);
4199         if (error) {
4200                 SOCK_UNLOCK(so);
4201                 SCTP_INP_RUNLOCK(inp);
4202                 return (error);
4203         }
4204         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
4205             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
4206                 /* We are already connected AND the TCP model */
4207                 SCTP_INP_RUNLOCK(inp);
4208                 SOCK_UNLOCK(so);
4209                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
4210                 return (EADDRINUSE);
4211         }
4212         if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4213                 /* We must do a bind. */
4214                 SOCK_UNLOCK(so);
4215                 SCTP_INP_RUNLOCK(inp);
4216                 if ((error = sctp_inpcb_bind(so, NULL, NULL, p))) {
4217                         /* bind error, probably perm */
4218                         return (error);
4219                 }
4220                 SOCK_LOCK(so);
4221         } else {
4222                 if (backlog != 0) {
4223                         inp->sctp_flags |= SCTP_PCB_FLAGS_LISTENING;
4224                 } else {
4225                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_LISTENING;
4226                 }
4227                 SCTP_INP_RUNLOCK(inp);
4228         }
4229         /* It appears for 7.0 and on, we must always call this. */
4230         solisten_proto(so, backlog);
4231         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
4232                 /* remove the ACCEPTCONN flag for one-to-many sockets */
4233                 so->so_options &= ~SO_ACCEPTCONN;
4234         }
4235         if (backlog == 0) {
4236                 /* turning off listen */
4237                 so->so_options &= ~SO_ACCEPTCONN;
4238         }
4239         SOCK_UNLOCK(so);
4240         return (error);
4241 }
4242
4243 static int sctp_defered_wakeup_cnt = 0;
4244
4245 int
4246 sctp_accept(struct socket *so, struct sockaddr **addr)
4247 {
4248         struct sctp_tcb *stcb;
4249         struct sctp_inpcb *inp;
4250         union sctp_sockstore store;
4251
4252 #ifdef INET6
4253         int error;
4254
4255 #endif
4256         inp = (struct sctp_inpcb *)so->so_pcb;
4257
4258         if (inp == 0) {
4259                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4260                 return (ECONNRESET);
4261         }
4262         SCTP_INP_RLOCK(inp);
4263         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
4264                 SCTP_INP_RUNLOCK(inp);
4265                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
4266                 return (EOPNOTSUPP);
4267         }
4268         if (so->so_state & SS_ISDISCONNECTED) {
4269                 SCTP_INP_RUNLOCK(inp);
4270                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ECONNABORTED);
4271                 return (ECONNABORTED);
4272         }
4273         stcb = LIST_FIRST(&inp->sctp_asoc_list);
4274         if (stcb == NULL) {
4275                 SCTP_INP_RUNLOCK(inp);
4276                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4277                 return (ECONNRESET);
4278         }
4279         SCTP_TCB_LOCK(stcb);
4280         SCTP_INP_RUNLOCK(inp);
4281         store = stcb->asoc.primary_destination->ro._l_addr;
4282         SCTP_TCB_UNLOCK(stcb);
4283         switch (store.sa.sa_family) {
4284         case AF_INET:
4285                 {
4286                         struct sockaddr_in *sin;
4287
4288                         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
4289                         sin->sin_family = AF_INET;
4290                         sin->sin_len = sizeof(*sin);
4291                         sin->sin_port = ((struct sockaddr_in *)&store)->sin_port;
4292                         sin->sin_addr = ((struct sockaddr_in *)&store)->sin_addr;
4293                         *addr = (struct sockaddr *)sin;
4294                         break;
4295                 }
4296 #ifdef INET6
4297         case AF_INET6:
4298                 {
4299                         struct sockaddr_in6 *sin6;
4300
4301                         SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
4302                         sin6->sin6_family = AF_INET6;
4303                         sin6->sin6_len = sizeof(*sin6);
4304                         sin6->sin6_port = ((struct sockaddr_in6 *)&store)->sin6_port;
4305
4306                         sin6->sin6_addr = ((struct sockaddr_in6 *)&store)->sin6_addr;
4307                         if ((error = sa6_recoverscope(sin6)) != 0) {
4308                                 SCTP_FREE_SONAME(sin6);
4309                                 return (error);
4310                         }
4311                         *addr = (struct sockaddr *)sin6;
4312                         break;
4313                 }
4314 #endif
4315         default:
4316                 /* TSNH */
4317                 break;
4318         }
4319         /* Wake any delayed sleep action */
4320         if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) {
4321                 SCTP_INP_WLOCK(inp);
4322                 inp->sctp_flags &= ~SCTP_PCB_FLAGS_DONT_WAKE;
4323                 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT) {
4324                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
4325                         SCTP_INP_WUNLOCK(inp);
4326                         SOCKBUF_LOCK(&inp->sctp_socket->so_snd);
4327                         if (sowriteable(inp->sctp_socket)) {
4328                                 sowwakeup_locked(inp->sctp_socket);
4329                         } else {
4330                                 SOCKBUF_UNLOCK(&inp->sctp_socket->so_snd);
4331                         }
4332                         SCTP_INP_WLOCK(inp);
4333                 }
4334                 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT) {
4335                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
4336                         SCTP_INP_WUNLOCK(inp);
4337                         SOCKBUF_LOCK(&inp->sctp_socket->so_rcv);
4338                         if (soreadable(inp->sctp_socket)) {
4339                                 sctp_defered_wakeup_cnt++;
4340                                 sorwakeup_locked(inp->sctp_socket);
4341                         } else {
4342                                 SOCKBUF_UNLOCK(&inp->sctp_socket->so_rcv);
4343                         }
4344                         SCTP_INP_WLOCK(inp);
4345                 }
4346                 SCTP_INP_WUNLOCK(inp);
4347         }
4348         return (0);
4349 }
4350
4351 int
4352 sctp_ingetaddr(struct socket *so, struct sockaddr **addr)
4353 {
4354         struct sockaddr_in *sin;
4355         uint32_t vrf_id;
4356         struct sctp_inpcb *inp;
4357         struct sctp_ifa *sctp_ifa;
4358
4359         /*
4360          * Do the malloc first in case it blocks.
4361          */
4362         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
4363         sin->sin_family = AF_INET;
4364         sin->sin_len = sizeof(*sin);
4365         inp = (struct sctp_inpcb *)so->so_pcb;
4366         if (!inp) {
4367                 SCTP_FREE_SONAME(sin);
4368                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4369                 return ECONNRESET;
4370         }
4371         SCTP_INP_RLOCK(inp);
4372         sin->sin_port = inp->sctp_lport;
4373         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
4374                 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4375                         struct sctp_tcb *stcb;
4376                         struct sockaddr_in *sin_a;
4377                         struct sctp_nets *net;
4378                         int fnd;
4379
4380                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
4381                         if (stcb == NULL) {
4382                                 goto notConn;
4383                         }
4384                         fnd = 0;
4385                         sin_a = NULL;
4386                         SCTP_TCB_LOCK(stcb);
4387                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
4388                                 sin_a = (struct sockaddr_in *)&net->ro._l_addr;
4389                                 if (sin_a == NULL)
4390                                         /* this will make coverity happy */
4391                                         continue;
4392
4393                                 if (sin_a->sin_family == AF_INET) {
4394                                         fnd = 1;
4395                                         break;
4396                                 }
4397                         }
4398                         if ((!fnd) || (sin_a == NULL)) {
4399                                 /* punt */
4400                                 SCTP_TCB_UNLOCK(stcb);
4401                                 goto notConn;
4402                         }
4403                         vrf_id = inp->def_vrf_id;
4404                         sctp_ifa = sctp_source_address_selection(inp,
4405                             stcb,
4406                             (sctp_route_t *) & net->ro,
4407                             net, 0, vrf_id);
4408                         if (sctp_ifa) {
4409                                 sin->sin_addr = sctp_ifa->address.sin.sin_addr;
4410                                 sctp_free_ifa(sctp_ifa);
4411                         }
4412                         SCTP_TCB_UNLOCK(stcb);
4413                 } else {
4414                         /* For the bound all case you get back 0 */
4415         notConn:
4416                         sin->sin_addr.s_addr = 0;
4417                 }
4418
4419         } else {
4420                 /* Take the first IPv4 address in the list */
4421                 struct sctp_laddr *laddr;
4422                 int fnd = 0;
4423
4424                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4425                         if (laddr->ifa->address.sa.sa_family == AF_INET) {
4426                                 struct sockaddr_in *sin_a;
4427
4428                                 sin_a = (struct sockaddr_in *)&laddr->ifa->address.sa;
4429                                 sin->sin_addr = sin_a->sin_addr;
4430                                 fnd = 1;
4431                                 break;
4432                         }
4433                 }
4434                 if (!fnd) {
4435                         SCTP_FREE_SONAME(sin);
4436                         SCTP_INP_RUNLOCK(inp);
4437                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
4438                         return ENOENT;
4439                 }
4440         }
4441         SCTP_INP_RUNLOCK(inp);
4442         (*addr) = (struct sockaddr *)sin;
4443         return (0);
4444 }
4445
4446 int
4447 sctp_peeraddr(struct socket *so, struct sockaddr **addr)
4448 {
4449         struct sockaddr_in *sin = (struct sockaddr_in *)*addr;
4450         int fnd;
4451         struct sockaddr_in *sin_a;
4452         struct sctp_inpcb *inp;
4453         struct sctp_tcb *stcb;
4454         struct sctp_nets *net;
4455
4456         /* Do the malloc first in case it blocks. */
4457         inp = (struct sctp_inpcb *)so->so_pcb;
4458         if ((inp == NULL) ||
4459             ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) {
4460                 /* UDP type and listeners will drop out here */
4461                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
4462                 return (ENOTCONN);
4463         }
4464         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
4465         sin->sin_family = AF_INET;
4466         sin->sin_len = sizeof(*sin);
4467
4468         /* We must recapture incase we blocked */
4469         inp = (struct sctp_inpcb *)so->so_pcb;
4470         if (!inp) {
4471                 SCTP_FREE_SONAME(sin);
4472                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4473                 return ECONNRESET;
4474         }
4475         SCTP_INP_RLOCK(inp);
4476         stcb = LIST_FIRST(&inp->sctp_asoc_list);
4477         if (stcb) {
4478                 SCTP_TCB_LOCK(stcb);
4479         }
4480         SCTP_INP_RUNLOCK(inp);
4481         if (stcb == NULL) {
4482                 SCTP_FREE_SONAME(sin);
4483                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
4484                 return ECONNRESET;
4485         }
4486         fnd = 0;
4487         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
4488                 sin_a = (struct sockaddr_in *)&net->ro._l_addr;
4489                 if (sin_a->sin_family == AF_INET) {
4490                         fnd = 1;
4491                         sin->sin_port = stcb->rport;
4492                         sin->sin_addr = sin_a->sin_addr;
4493                         break;
4494                 }
4495         }
4496         SCTP_TCB_UNLOCK(stcb);
4497         if (!fnd) {
4498                 /* No IPv4 address */
4499                 SCTP_FREE_SONAME(sin);
4500                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
4501                 return ENOENT;
4502         }
4503         (*addr) = (struct sockaddr *)sin;
4504         return (0);
4505 }
4506
4507 struct pr_usrreqs sctp_usrreqs = {
4508         .pru_abort = sctp_abort,
4509         .pru_accept = sctp_accept,
4510         .pru_attach = sctp_attach,
4511         .pru_bind = sctp_bind,
4512         .pru_connect = sctp_connect,
4513         .pru_control = in_control,
4514         .pru_close = sctp_close,
4515         .pru_detach = sctp_close,
4516         .pru_sopoll = sopoll_generic,
4517         .pru_flush = sctp_flush,
4518         .pru_disconnect = sctp_disconnect,
4519         .pru_listen = sctp_listen,
4520         .pru_peeraddr = sctp_peeraddr,
4521         .pru_send = sctp_sendm,
4522         .pru_shutdown = sctp_shutdown,
4523         .pru_sockaddr = sctp_ingetaddr,
4524         .pru_sosend = sctp_sosend,
4525         .pru_soreceive = sctp_soreceive
4526 };