The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/netinet/sctp_usrreq.c

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    1 /*-
    2  * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
    3  *
    4  * Redistribution and use in source and binary forms, with or without
    5  * modification, are permitted provided that the following conditions are met:
    6  *
    7  * a) Redistributions of source code must retain the above copyright notice,
    8  *   this list of conditions and the following disclaimer.
    9  *
   10  * b) Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in
   12  *   the documentation and/or other materials provided with the distribution.
   13  *
   14  * c) Neither the name of Cisco Systems, Inc. nor the names of its
   15  *    contributors may be used to endorse or promote products derived
   16  *    from this software without specific prior written permission.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
   20  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
   22  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   28  * THE POSSIBILITY OF SUCH DAMAGE.
   29  */
   30 
   31 /* $KAME: sctp_usrreq.c,v 1.48 2005/03/07 23:26:08 itojun Exp $  */
   32 
   33 #include <sys/cdefs.h>
   34 __FBSDID("$FreeBSD$");
   35 #include <netinet/sctp_os.h>
   36 #include <sys/proc.h>
   37 #include <netinet/sctp_pcb.h>
   38 #include <netinet/sctp_header.h>
   39 #include <netinet/sctp_var.h>
   40 #if defined(INET6)
   41 #include <netinet6/sctp6_var.h>
   42 #endif
   43 #include <netinet/sctp_sysctl.h>
   44 #include <netinet/sctp_output.h>
   45 #include <netinet/sctp_uio.h>
   46 #include <netinet/sctp_asconf.h>
   47 #include <netinet/sctputil.h>
   48 #include <netinet/sctp_indata.h>
   49 #include <netinet/sctp_timer.h>
   50 #include <netinet/sctp_auth.h>
   51 #include <netinet/sctp_bsd_addr.h>
   52 #include <netinet/sctp_cc_functions.h>
   53 
   54 
   55 
   56 
   57 void
   58 sctp_init(void)
   59 {
   60         /* Init the SCTP pcb in sctp_pcb.c */
   61         u_long sb_max_adj;
   62 
   63         sctp_pcb_init();
   64 
   65 
   66         if ((nmbclusters / 8) > SCTP_ASOC_MAX_CHUNKS_ON_QUEUE)
   67                 sctp_max_chunks_on_queue = (nmbclusters / 8);
   68         /*
   69          * Allow a user to take no more than 1/2 the number of clusters or
   70          * the SB_MAX whichever is smaller for the send window.
   71          */
   72         sb_max_adj = (u_long)((u_quad_t) (SB_MAX) * MCLBYTES / (MSIZE + MCLBYTES));
   73         sctp_sendspace = min(sb_max_adj,
   74             (((uint32_t) nmbclusters / 2) * SCTP_DEFAULT_MAXSEGMENT));
   75         /*
   76          * Now for the recv window, should we take the same amount? or
   77          * should I do 1/2 the SB_MAX instead in the SB_MAX min above. For
   78          * now I will just copy.
   79          */
   80         sctp_recvspace = sctp_sendspace;
   81 
   82 }
   83 
   84 
   85 
   86 /*
   87  * cleanup of the sctppcbinfo structure.
   88  * Assumes that the sctppcbinfo lock is held.
   89  */
   90 void
   91 sctp_pcbinfo_cleanup(void)
   92 {
   93         /* free the hash tables */
   94         if (sctppcbinfo.sctp_asochash != NULL)
   95                 SCTP_HASH_FREE(sctppcbinfo.sctp_asochash, sctppcbinfo.hashasocmark);
   96         if (sctppcbinfo.sctp_ephash != NULL)
   97                 SCTP_HASH_FREE(sctppcbinfo.sctp_ephash, sctppcbinfo.hashmark);
   98         if (sctppcbinfo.sctp_tcpephash != NULL)
   99                 SCTP_HASH_FREE(sctppcbinfo.sctp_tcpephash, sctppcbinfo.hashtcpmark);
  100         if (sctppcbinfo.sctp_restarthash != NULL)
  101                 SCTP_HASH_FREE(sctppcbinfo.sctp_restarthash, sctppcbinfo.hashrestartmark);
  102 }
  103 
  104 
  105 static void
  106 sctp_pathmtu_adjustment(struct sctp_inpcb *inp,
  107     struct sctp_tcb *stcb,
  108     struct sctp_nets *net,
  109     uint16_t nxtsz)
  110 {
  111         struct sctp_tmit_chunk *chk;
  112 
  113         /* Adjust that too */
  114         stcb->asoc.smallest_mtu = nxtsz;
  115         /* now off to subtract IP_DF flag if needed */
  116 #ifdef SCTP_PRINT_FOR_B_AND_M
  117         SCTP_PRINTF("sctp_pathmtu_adjust called inp:%p stcb:%p net:%p nxtsz:%d\n",
  118             inp, stcb, net, nxtsz);
  119 #endif
  120         TAILQ_FOREACH(chk, &stcb->asoc.send_queue, sctp_next) {
  121                 if ((chk->send_size + IP_HDR_SIZE) > nxtsz) {
  122                         chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
  123                 }
  124         }
  125         TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
  126                 if ((chk->send_size + IP_HDR_SIZE) > nxtsz) {
  127                         /*
  128                          * For this guy we also mark for immediate resend
  129                          * since we sent to big of chunk
  130                          */
  131                         chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
  132                         if (chk->sent != SCTP_DATAGRAM_RESEND) {
  133                                 sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt);
  134                         }
  135                         chk->sent = SCTP_DATAGRAM_RESEND;
  136                         chk->rec.data.doing_fast_retransmit = 0;
  137                         if (sctp_logging_level & SCTP_FLIGHT_LOGGING_ENABLE) {
  138                                 sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_PMTU,
  139                                     chk->whoTo->flight_size,
  140                                     chk->book_size,
  141                                     (uintptr_t) chk->whoTo,
  142                                     chk->rec.data.TSN_seq);
  143                         }
  144                         /* Clear any time so NO RTT is being done */
  145                         chk->do_rtt = 0;
  146                         sctp_flight_size_decrease(chk);
  147                         sctp_total_flight_decrease(stcb, chk);
  148                 }
  149         }
  150 }
  151 
  152 static void
  153 sctp_notify_mbuf(struct sctp_inpcb *inp,
  154     struct sctp_tcb *stcb,
  155     struct sctp_nets *net,
  156     struct ip *ip,
  157     struct sctphdr *sh)
  158 {
  159         struct icmp *icmph;
  160         int totsz, tmr_stopped = 0;
  161         uint16_t nxtsz;
  162 
  163         /* protection */
  164         if ((inp == NULL) || (stcb == NULL) || (net == NULL) ||
  165             (ip == NULL) || (sh == NULL)) {
  166                 if (stcb != NULL) {
  167                         SCTP_TCB_UNLOCK(stcb);
  168                 }
  169                 return;
  170         }
  171         /* First job is to verify the vtag matches what I would send */
  172         if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) {
  173                 SCTP_TCB_UNLOCK(stcb);
  174                 return;
  175         }
  176         icmph = (struct icmp *)((caddr_t)ip - (sizeof(struct icmp) -
  177             sizeof(struct ip)));
  178         if (icmph->icmp_type != ICMP_UNREACH) {
  179                 /* We only care about unreachable */
  180                 SCTP_TCB_UNLOCK(stcb);
  181                 return;
  182         }
  183         if (icmph->icmp_code != ICMP_UNREACH_NEEDFRAG) {
  184                 /* not a unreachable message due to frag. */
  185                 SCTP_TCB_UNLOCK(stcb);
  186                 return;
  187         }
  188         totsz = ip->ip_len;
  189 
  190         nxtsz = ntohs(icmph->icmp_nextmtu);
  191         if (nxtsz == 0) {
  192                 /*
  193                  * old type router that does not tell us what the next size
  194                  * mtu is. Rats we will have to guess (in a educated fashion
  195                  * of course)
  196                  */
  197                 nxtsz = find_next_best_mtu(totsz);
  198         }
  199         /* Stop any PMTU timer */
  200         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
  201                 tmr_stopped = 1;
  202                 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
  203                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_1);
  204         }
  205         /* Adjust destination size limit */
  206         if (net->mtu > nxtsz) {
  207                 net->mtu = nxtsz;
  208         }
  209         /* now what about the ep? */
  210         if (stcb->asoc.smallest_mtu > nxtsz) {
  211 #ifdef SCTP_PRINT_FOR_B_AND_M
  212                 SCTP_PRINTF("notify_mbuf (ICMP) calls sctp_pathmtu_adjust mtu:%d\n",
  213                     nxtsz);
  214 #endif
  215                 sctp_pathmtu_adjustment(inp, stcb, net, nxtsz);
  216         }
  217         if (tmr_stopped)
  218                 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
  219 
  220         SCTP_TCB_UNLOCK(stcb);
  221 }
  222 
  223 
  224 void
  225 sctp_notify(struct sctp_inpcb *inp,
  226     struct ip *ip,
  227     struct sctphdr *sh,
  228     struct sockaddr *to,
  229     struct sctp_tcb *stcb,
  230     struct sctp_nets *net)
  231 {
  232 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
  233         struct socket *so;
  234 
  235 #endif
  236         /* protection */
  237         int reason;
  238         struct icmp *icmph;
  239 
  240 
  241         if ((inp == NULL) || (stcb == NULL) || (net == NULL) ||
  242             (sh == NULL) || (to == NULL)) {
  243                 if (stcb)
  244                         SCTP_TCB_UNLOCK(stcb);
  245                 return;
  246         }
  247         /* First job is to verify the vtag matches what I would send */
  248         if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) {
  249                 SCTP_TCB_UNLOCK(stcb);
  250                 return;
  251         }
  252         icmph = (struct icmp *)((caddr_t)ip - (sizeof(struct icmp) -
  253             sizeof(struct ip)));
  254         if (icmph->icmp_type != ICMP_UNREACH) {
  255                 /* We only care about unreachable */
  256                 SCTP_TCB_UNLOCK(stcb);
  257                 return;
  258         }
  259         if ((icmph->icmp_code == ICMP_UNREACH_NET) ||
  260             (icmph->icmp_code == ICMP_UNREACH_HOST) ||
  261             (icmph->icmp_code == ICMP_UNREACH_NET_UNKNOWN) ||
  262             (icmph->icmp_code == ICMP_UNREACH_HOST_UNKNOWN) ||
  263             (icmph->icmp_code == ICMP_UNREACH_ISOLATED) ||
  264             (icmph->icmp_code == ICMP_UNREACH_NET_PROHIB) ||
  265             (icmph->icmp_code == ICMP_UNREACH_HOST_PROHIB) ||
  266             (icmph->icmp_code == ICMP_UNREACH_FILTER_PROHIB)) {
  267 
  268                 /*
  269                  * Hmm reachablity problems we must examine closely. If its
  270                  * not reachable, we may have lost a network. Or if there is
  271                  * NO protocol at the other end named SCTP. well we consider
  272                  * it a OOTB abort.
  273                  */
  274                 if (net->dest_state & SCTP_ADDR_REACHABLE) {
  275                         /* Ok that destination is NOT reachable */
  276                         SCTP_PRINTF("ICMP (thresh %d/%d) takes interface %p down\n",
  277                             net->error_count,
  278                             net->failure_threshold,
  279                             net);
  280 
  281                         net->dest_state &= ~SCTP_ADDR_REACHABLE;
  282                         net->dest_state |= SCTP_ADDR_NOT_REACHABLE;
  283                         /*
  284                          * JRS 5/14/07 - If a destination is unreachable,
  285                          * the PF bit is turned off.  This allows an
  286                          * unambiguous use of the PF bit for destinations
  287                          * that are reachable but potentially failed. If the
  288                          * destination is set to the unreachable state, also
  289                          * set the destination to the PF state.
  290                          */
  291                         /*
  292                          * Add debug message here if destination is not in
  293                          * PF state.
  294                          */
  295                         /* Stop any running T3 timers here? */
  296                         if (sctp_cmt_on_off && sctp_cmt_pf) {
  297                                 net->dest_state &= ~SCTP_ADDR_PF;
  298                                 SCTPDBG(SCTP_DEBUG_TIMER4, "Destination %p moved from PF to unreachable.\n",
  299                                     net);
  300                         }
  301                         net->error_count = net->failure_threshold + 1;
  302                         sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN,
  303                             stcb, SCTP_FAILED_THRESHOLD,
  304                             (void *)net, SCTP_SO_NOT_LOCKED);
  305                 }
  306                 SCTP_TCB_UNLOCK(stcb);
  307         } else if ((icmph->icmp_code == ICMP_UNREACH_PROTOCOL) ||
  308             (icmph->icmp_code == ICMP_UNREACH_PORT)) {
  309                 /*
  310                  * Here the peer is either playing tricks on us, including
  311                  * an address that belongs to someone who does not support
  312                  * SCTP OR was a userland implementation that shutdown and
  313                  * now is dead. In either case treat it like a OOTB abort
  314                  * with no TCB
  315                  */
  316                 reason = SCTP_PEER_FAULTY;
  317                 sctp_abort_notification(stcb, reason, SCTP_SO_NOT_LOCKED);
  318 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
  319                 so = SCTP_INP_SO(inp);
  320                 atomic_add_int(&stcb->asoc.refcnt, 1);
  321                 SCTP_TCB_UNLOCK(stcb);
  322                 SCTP_SOCKET_LOCK(so, 1);
  323                 SCTP_TCB_LOCK(stcb);
  324                 atomic_subtract_int(&stcb->asoc.refcnt, 1);
  325 #endif
  326                 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_2);
  327 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
  328                 SCTP_SOCKET_UNLOCK(so, 1);
  329                 /* SCTP_TCB_UNLOCK(stcb); MT: I think this is not needed. */
  330 #endif
  331                 /* no need to unlock here, since the TCB is gone */
  332         } else {
  333                 SCTP_TCB_UNLOCK(stcb);
  334         }
  335 }
  336 
  337 void
  338 sctp_ctlinput(cmd, sa, vip)
  339         int cmd;
  340         struct sockaddr *sa;
  341         void *vip;
  342 {
  343         struct ip *ip = vip;
  344         struct sctphdr *sh;
  345         uint32_t vrf_id;
  346 
  347         /* FIX, for non-bsd is this right? */
  348         vrf_id = SCTP_DEFAULT_VRFID;
  349         if (sa->sa_family != AF_INET ||
  350             ((struct sockaddr_in *)sa)->sin_addr.s_addr == INADDR_ANY) {
  351                 return;
  352         }
  353         if (PRC_IS_REDIRECT(cmd)) {
  354                 ip = 0;
  355         } else if ((unsigned)cmd >= PRC_NCMDS || inetctlerrmap[cmd] == 0) {
  356                 return;
  357         }
  358         if (ip) {
  359                 struct sctp_inpcb *inp = NULL;
  360                 struct sctp_tcb *stcb = NULL;
  361                 struct sctp_nets *net = NULL;
  362                 struct sockaddr_in to, from;
  363 
  364                 sh = (struct sctphdr *)((caddr_t)ip + (ip->ip_hl << 2));
  365                 bzero(&to, sizeof(to));
  366                 bzero(&from, sizeof(from));
  367                 from.sin_family = to.sin_family = AF_INET;
  368                 from.sin_len = to.sin_len = sizeof(to);
  369                 from.sin_port = sh->src_port;
  370                 from.sin_addr = ip->ip_src;
  371                 to.sin_port = sh->dest_port;
  372                 to.sin_addr = ip->ip_dst;
  373 
  374                 /*
  375                  * 'to' holds the dest of the packet that failed to be sent.
  376                  * 'from' holds our local endpoint address. Thus we reverse
  377                  * the to and the from in the lookup.
  378                  */
  379                 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&from,
  380                     (struct sockaddr *)&to,
  381                     &inp, &net, 1, vrf_id);
  382                 if (stcb != NULL && inp && (inp->sctp_socket != NULL)) {
  383                         if (cmd != PRC_MSGSIZE) {
  384                                 sctp_notify(inp, ip, sh,
  385                                     (struct sockaddr *)&to, stcb,
  386                                     net);
  387                         } else {
  388                                 /* handle possible ICMP size messages */
  389                                 sctp_notify_mbuf(inp, stcb, net, ip, sh);
  390                         }
  391                 } else {
  392                         if ((stcb == NULL) && (inp != NULL)) {
  393                                 /* reduce ref-count */
  394                                 SCTP_INP_WLOCK(inp);
  395                                 SCTP_INP_DECR_REF(inp);
  396                                 SCTP_INP_WUNLOCK(inp);
  397                         }
  398                 }
  399         }
  400         return;
  401 }
  402 
  403 static int
  404 sctp_getcred(SYSCTL_HANDLER_ARGS)
  405 {
  406         struct xucred xuc;
  407         struct sockaddr_in addrs[2];
  408         struct sctp_inpcb *inp;
  409         struct sctp_nets *net;
  410         struct sctp_tcb *stcb;
  411         int error;
  412         uint32_t vrf_id;
  413 
  414         /* FIX, for non-bsd is this right? */
  415         vrf_id = SCTP_DEFAULT_VRFID;
  416 
  417         error = priv_check(req->td, PRIV_NETINET_GETCRED);
  418 
  419         if (error)
  420                 return (error);
  421 
  422         error = SYSCTL_IN(req, addrs, sizeof(addrs));
  423         if (error)
  424                 return (error);
  425 
  426         stcb = sctp_findassociation_addr_sa(sintosa(&addrs[0]),
  427             sintosa(&addrs[1]),
  428             &inp, &net, 1, vrf_id);
  429         if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) {
  430                 if ((inp != NULL) && (stcb == NULL)) {
  431                         /* reduce ref-count */
  432                         SCTP_INP_WLOCK(inp);
  433                         SCTP_INP_DECR_REF(inp);
  434                         goto cred_can_cont;
  435                 }
  436                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
  437                 error = ENOENT;
  438                 goto out;
  439         }
  440         SCTP_TCB_UNLOCK(stcb);
  441         /*
  442          * We use the write lock here, only since in the error leg we need
  443          * it. If we used RLOCK, then we would have to
  444          * wlock/decr/unlock/rlock. Which in theory could create a hole.
  445          * Better to use higher wlock.
  446          */
  447         SCTP_INP_WLOCK(inp);
  448 cred_can_cont:
  449         error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket);
  450         if (error) {
  451                 SCTP_INP_WUNLOCK(inp);
  452                 goto out;
  453         }
  454         cru2x(inp->sctp_socket->so_cred, &xuc);
  455         SCTP_INP_WUNLOCK(inp);
  456         error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred));
  457 out:
  458         return (error);
  459 }
  460 
  461 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW,
  462     0, 0, sctp_getcred, "S,ucred", "Get the ucred of a SCTP connection");
  463 
  464 
  465 static void
  466 sctp_abort(struct socket *so)
  467 {
  468         struct sctp_inpcb *inp;
  469         uint32_t flags;
  470 
  471         inp = (struct sctp_inpcb *)so->so_pcb;
  472         if (inp == 0) {
  473                 return;
  474         }
  475 sctp_must_try_again:
  476         flags = inp->sctp_flags;
  477 #ifdef SCTP_LOG_CLOSING
  478         sctp_log_closing(inp, NULL, 17);
  479 #endif
  480         if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
  481             (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
  482 #ifdef SCTP_LOG_CLOSING
  483                 sctp_log_closing(inp, NULL, 16);
  484 #endif
  485                 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
  486                     SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
  487                 SOCK_LOCK(so);
  488                 SCTP_SB_CLEAR(so->so_snd);
  489                 /*
  490                  * same for the rcv ones, they are only here for the
  491                  * accounting/select.
  492                  */
  493                 SCTP_SB_CLEAR(so->so_rcv);
  494 
  495                 /* Now null out the reference, we are completely detached. */
  496                 so->so_pcb = NULL;
  497                 SOCK_UNLOCK(so);
  498         } else {
  499                 flags = inp->sctp_flags;
  500                 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
  501                         goto sctp_must_try_again;
  502                 }
  503         }
  504         return;
  505 }
  506 
  507 static int
  508 sctp_attach(struct socket *so, int proto, struct thread *p)
  509 {
  510         struct sctp_inpcb *inp;
  511         struct inpcb *ip_inp;
  512         int error;
  513         uint32_t vrf_id = SCTP_DEFAULT_VRFID;
  514 
  515 #ifdef IPSEC
  516         uint32_t flags;
  517 
  518 #endif
  519         inp = (struct sctp_inpcb *)so->so_pcb;
  520         if (inp != 0) {
  521                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
  522                 return EINVAL;
  523         }
  524         error = SCTP_SORESERVE(so, sctp_sendspace, sctp_recvspace);
  525         if (error) {
  526                 return error;
  527         }
  528         error = sctp_inpcb_alloc(so, vrf_id);
  529         if (error) {
  530                 return error;
  531         }
  532         inp = (struct sctp_inpcb *)so->so_pcb;
  533         SCTP_INP_WLOCK(inp);
  534         inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUND_V6;    /* I'm not v6! */
  535         ip_inp = &inp->ip_inp.inp;
  536         ip_inp->inp_vflag |= INP_IPV4;
  537         ip_inp->inp_ip_ttl = ip_defttl;
  538 #ifdef IPSEC
  539         error = ipsec_init_policy(so, &ip_inp->inp_sp);
  540 #ifdef SCTP_LOG_CLOSING
  541         sctp_log_closing(inp, NULL, 17);
  542 #endif
  543         if (error != 0) {
  544                 flags = inp->sctp_flags;
  545                 if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
  546                     (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
  547 #ifdef SCTP_LOG_CLOSING
  548                         sctp_log_closing(inp, NULL, 15);
  549 #endif
  550                         SCTP_INP_WUNLOCK(inp);
  551                         sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
  552                             SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
  553                 } else {
  554                         SCTP_INP_WUNLOCK(inp);
  555                 }
  556                 return error;
  557         }
  558 #endif                          /* IPSEC */
  559         SCTP_INP_WUNLOCK(inp);
  560         return 0;
  561 }
  562 
  563 static int
  564 sctp_bind(struct socket *so, struct sockaddr *addr, struct thread *p)
  565 {
  566         struct sctp_inpcb *inp = NULL;
  567         int error;
  568 
  569 #ifdef INET6
  570         if (addr && addr->sa_family != AF_INET) {
  571                 /* must be a v4 address! */
  572                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
  573                 return EINVAL;
  574         }
  575 #endif                          /* INET6 */
  576         if (addr && (addr->sa_len != sizeof(struct sockaddr_in))) {
  577                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
  578                 return EINVAL;
  579         }
  580         inp = (struct sctp_inpcb *)so->so_pcb;
  581         if (inp == 0) {
  582                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
  583                 return EINVAL;
  584         }
  585         error = sctp_inpcb_bind(so, addr, NULL, p);
  586         return error;
  587 }
  588 
  589 void
  590 sctp_close(struct socket *so)
  591 {
  592         struct sctp_inpcb *inp;
  593         uint32_t flags;
  594 
  595         inp = (struct sctp_inpcb *)so->so_pcb;
  596         if (inp == 0)
  597                 return;
  598 
  599         /*
  600          * Inform all the lower layer assoc that we are done.
  601          */
  602 sctp_must_try_again:
  603         flags = inp->sctp_flags;
  604 #ifdef SCTP_LOG_CLOSING
  605         sctp_log_closing(inp, NULL, 17);
  606 #endif
  607         if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
  608             (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
  609                 if (((so->so_options & SO_LINGER) && (so->so_linger == 0)) ||
  610                     (so->so_rcv.sb_cc > 0)) {
  611 #ifdef SCTP_LOG_CLOSING
  612                         sctp_log_closing(inp, NULL, 13);
  613 #endif
  614                         sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
  615                             SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
  616                 } else {
  617 #ifdef SCTP_LOG_CLOSING
  618                         sctp_log_closing(inp, NULL, 14);
  619 #endif
  620                         sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
  621                             SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
  622                 }
  623                 /*
  624                  * The socket is now detached, no matter what the state of
  625                  * the SCTP association.
  626                  */
  627                 SOCK_LOCK(so);
  628                 SCTP_SB_CLEAR(so->so_snd);
  629                 /*
  630                  * same for the rcv ones, they are only here for the
  631                  * accounting/select.
  632                  */
  633                 SCTP_SB_CLEAR(so->so_rcv);
  634 
  635                 /* Now null out the reference, we are completely detached. */
  636                 so->so_pcb = NULL;
  637                 SOCK_UNLOCK(so);
  638         } else {
  639                 flags = inp->sctp_flags;
  640                 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
  641                         goto sctp_must_try_again;
  642                 }
  643         }
  644         return;
  645 }
  646 
  647 
  648 int
  649 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
  650     struct mbuf *control, struct thread *p);
  651 
  652 
  653 int
  654 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
  655     struct mbuf *control, struct thread *p)
  656 {
  657         struct sctp_inpcb *inp;
  658         int error;
  659 
  660         inp = (struct sctp_inpcb *)so->so_pcb;
  661         if (inp == 0) {
  662                 if (control) {
  663                         sctp_m_freem(control);
  664                         control = NULL;
  665                 }
  666                 SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
  667                 sctp_m_freem(m);
  668                 return EINVAL;
  669         }
  670         /* Got to have an to address if we are NOT a connected socket */
  671         if ((addr == NULL) &&
  672             ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) ||
  673             (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE))
  674             ) {
  675                 goto connected_type;
  676         } else if (addr == NULL) {
  677                 SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EDESTADDRREQ);
  678                 error = EDESTADDRREQ;
  679                 sctp_m_freem(m);
  680                 if (control) {
  681                         sctp_m_freem(control);
  682                         control = NULL;
  683                 }
  684                 return (error);
  685         }
  686 #ifdef INET6
  687         if (addr->sa_family != AF_INET) {
  688                 /* must be a v4 address! */
  689                 SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EDESTADDRREQ);
  690                 sctp_m_freem(m);
  691                 if (control) {
  692                         sctp_m_freem(control);
  693                         control = NULL;
  694                 }
  695                 error = EDESTADDRREQ;
  696                 return EDESTADDRREQ;
  697         }
  698 #endif                          /* INET6 */
  699 connected_type:
  700         /* now what about control */
  701         if (control) {
  702                 if (inp->control) {
  703                         SCTP_PRINTF("huh? control set?\n");
  704                         sctp_m_freem(inp->control);
  705                         inp->control = NULL;
  706                 }
  707                 inp->control = control;
  708         }
  709         /* Place the data */
  710         if (inp->pkt) {
  711                 SCTP_BUF_NEXT(inp->pkt_last) = m;
  712                 inp->pkt_last = m;
  713         } else {
  714                 inp->pkt_last = inp->pkt = m;
  715         }
  716         if (
  717         /* FreeBSD uses a flag passed */
  718             ((flags & PRUS_MORETOCOME) == 0)
  719             ) {
  720                 /*
  721                  * note with the current version this code will only be used
  722                  * by OpenBSD-- NetBSD, FreeBSD, and MacOS have methods for
  723                  * re-defining sosend to use the sctp_sosend. One can
  724                  * optionally switch back to this code (by changing back the
  725                  * definitions) but this is not advisable. This code is used
  726                  * by FreeBSD when sending a file with sendfile() though.
  727                  */
  728                 int ret;
  729 
  730                 ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags);
  731                 inp->pkt = NULL;
  732                 inp->control = NULL;
  733                 return (ret);
  734         } else {
  735                 return (0);
  736         }
  737 }
  738 
  739 int
  740 sctp_disconnect(struct socket *so)
  741 {
  742         struct sctp_inpcb *inp;
  743 
  744         inp = (struct sctp_inpcb *)so->so_pcb;
  745         if (inp == NULL) {
  746                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
  747                 return (ENOTCONN);
  748         }
  749         SCTP_INP_RLOCK(inp);
  750         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
  751             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
  752                 if (SCTP_LIST_EMPTY(&inp->sctp_asoc_list)) {
  753                         /* No connection */
  754                         SCTP_INP_RUNLOCK(inp);
  755                         return (0);
  756                 } else {
  757                         struct sctp_association *asoc;
  758                         struct sctp_tcb *stcb;
  759 
  760                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
  761                         if (stcb == NULL) {
  762                                 SCTP_INP_RUNLOCK(inp);
  763                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
  764                                 return (EINVAL);
  765                         }
  766                         SCTP_TCB_LOCK(stcb);
  767                         asoc = &stcb->asoc;
  768                         if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
  769                                 /* We are about to be freed, out of here */
  770                                 SCTP_TCB_UNLOCK(stcb);
  771                                 SCTP_INP_RUNLOCK(inp);
  772                                 return (0);
  773                         }
  774                         if (((so->so_options & SO_LINGER) &&
  775                             (so->so_linger == 0)) ||
  776                             (so->so_rcv.sb_cc > 0)) {
  777                                 if (SCTP_GET_STATE(asoc) !=
  778                                     SCTP_STATE_COOKIE_WAIT) {
  779                                         /* Left with Data unread */
  780                                         struct mbuf *err;
  781 
  782                                         err = sctp_get_mbuf_for_msg(sizeof(struct sctp_paramhdr), 0, M_DONTWAIT, 1, MT_DATA);
  783                                         if (err) {
  784                                                 /*
  785                                                  * Fill in the user
  786                                                  * initiated abort
  787                                                  */
  788                                                 struct sctp_paramhdr *ph;
  789 
  790                                                 ph = mtod(err, struct sctp_paramhdr *);
  791                                                 SCTP_BUF_LEN(err) = sizeof(struct sctp_paramhdr);
  792                                                 ph->param_type = htons(SCTP_CAUSE_USER_INITIATED_ABT);
  793                                                 ph->param_length = htons(SCTP_BUF_LEN(err));
  794                                         }
  795 #if defined(SCTP_PANIC_ON_ABORT)
  796                                         panic("disconnect does an abort");
  797 #endif
  798                                         sctp_send_abort_tcb(stcb, err, SCTP_SO_LOCKED);
  799                                         SCTP_STAT_INCR_COUNTER32(sctps_aborted);
  800                                 }
  801                                 SCTP_INP_RUNLOCK(inp);
  802                                 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
  803                                     (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
  804                                         SCTP_STAT_DECR_GAUGE32(sctps_currestab);
  805                                 }
  806                                 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_3);
  807                                 /* No unlock tcb assoc is gone */
  808                                 return (0);
  809                         }
  810                         if (TAILQ_EMPTY(&asoc->send_queue) &&
  811                             TAILQ_EMPTY(&asoc->sent_queue) &&
  812                             (asoc->stream_queue_cnt == 0)) {
  813                                 /* there is nothing queued to send, so done */
  814                                 if (asoc->locked_on_sending) {
  815                                         goto abort_anyway;
  816                                 }
  817                                 if ((SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
  818                                     (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
  819                                         /* only send SHUTDOWN 1st time thru */
  820                                         sctp_stop_timers_for_shutdown(stcb);
  821                                         sctp_send_shutdown(stcb,
  822                                             stcb->asoc.primary_destination);
  823                                         sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_LOCKED);
  824                                         if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
  825                                             (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
  826                                                 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
  827                                         }
  828                                         SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT);
  829                                         SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING);
  830                                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN,
  831                                             stcb->sctp_ep, stcb,
  832                                             asoc->primary_destination);
  833                                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD,
  834                                             stcb->sctp_ep, stcb,
  835                                             asoc->primary_destination);
  836                                 }
  837                         } else {
  838                                 /*
  839                                  * we still got (or just got) data to send,
  840                                  * so set SHUTDOWN_PENDING
  841                                  */
  842                                 /*
  843                                  * XXX sockets draft says that SCTP_EOF
  844                                  * should be sent with no data. currently,
  845                                  * we will allow user data to be sent first
  846                                  * and move to SHUTDOWN-PENDING
  847                                  */
  848                                 asoc->state |= SCTP_STATE_SHUTDOWN_PENDING;
  849                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb,
  850                                     asoc->primary_destination);
  851                                 if (asoc->locked_on_sending) {
  852                                         /* Locked to send out the data */
  853                                         struct sctp_stream_queue_pending *sp;
  854 
  855                                         sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead);
  856                                         if (sp == NULL) {
  857                                                 SCTP_PRINTF("Error, sp is NULL, locked on sending is non-null strm:%d\n",
  858                                                     asoc->locked_on_sending->stream_no);
  859                                         } else {
  860                                                 if ((sp->length == 0) && (sp->msg_is_complete == 0))
  861                                                         asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT;
  862                                         }
  863                                 }
  864                                 if (TAILQ_EMPTY(&asoc->send_queue) &&
  865                                     TAILQ_EMPTY(&asoc->sent_queue) &&
  866                                     (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
  867                                         struct mbuf *op_err;
  868 
  869                         abort_anyway:
  870                                         op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
  871                                             0, M_DONTWAIT, 1, MT_DATA);
  872                                         if (op_err) {
  873                                                 /*
  874                                                  * Fill in the user
  875                                                  * initiated abort
  876                                                  */
  877                                                 struct sctp_paramhdr *ph;
  878                                                 uint32_t *ippp;
  879 
  880                                                 SCTP_BUF_LEN(op_err) =
  881                                                     (sizeof(struct sctp_paramhdr) + sizeof(uint32_t));
  882                                                 ph = mtod(op_err,
  883                                                     struct sctp_paramhdr *);
  884                                                 ph->param_type = htons(
  885                                                     SCTP_CAUSE_USER_INITIATED_ABT);
  886                                                 ph->param_length = htons(SCTP_BUF_LEN(op_err));
  887                                                 ippp = (uint32_t *) (ph + 1);
  888                                                 *ippp = htonl(SCTP_FROM_SCTP_USRREQ + SCTP_LOC_4);
  889                                         }
  890 #if defined(SCTP_PANIC_ON_ABORT)
  891                                         panic("disconnect does an abort");
  892 #endif
  893 
  894                                         stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_USRREQ + SCTP_LOC_4;
  895                                         sctp_send_abort_tcb(stcb, op_err, SCTP_SO_LOCKED);
  896                                         SCTP_STAT_INCR_COUNTER32(sctps_aborted);
  897                                         if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
  898                                             (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
  899                                                 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
  900                                         }
  901                                         SCTP_INP_RUNLOCK(inp);
  902                                         (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_5);
  903                                         return (0);
  904                                 } else {
  905                                         sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
  906                                 }
  907                         }
  908                         SCTP_TCB_UNLOCK(stcb);
  909                         SCTP_INP_RUNLOCK(inp);
  910                         return (0);
  911                 }
  912                 /* not reached */
  913         } else {
  914                 /* UDP model does not support this */
  915                 SCTP_INP_RUNLOCK(inp);
  916                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
  917                 return EOPNOTSUPP;
  918         }
  919 }
  920 
  921 int
  922 sctp_shutdown(struct socket *so)
  923 {
  924         struct sctp_inpcb *inp;
  925 
  926         inp = (struct sctp_inpcb *)so->so_pcb;
  927         if (inp == 0) {
  928                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
  929                 return EINVAL;
  930         }
  931         SCTP_INP_RLOCK(inp);
  932         /* For UDP model this is a invalid call */
  933         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
  934                 /* Restore the flags that the soshutdown took away. */
  935                 so->so_rcv.sb_state &= ~SBS_CANTRCVMORE;
  936                 /* This proc will wakeup for read and do nothing (I hope) */
  937                 SCTP_INP_RUNLOCK(inp);
  938                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
  939                 return (EOPNOTSUPP);
  940         }
  941         /*
  942          * Ok if we reach here its the TCP model and it is either a SHUT_WR
  943          * or SHUT_RDWR. This means we put the shutdown flag against it.
  944          */
  945         {
  946                 struct sctp_tcb *stcb;
  947                 struct sctp_association *asoc;
  948 
  949                 socantsendmore(so);
  950 
  951                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
  952                 if (stcb == NULL) {
  953                         /*
  954                          * Ok we hit the case that the shutdown call was
  955                          * made after an abort or something. Nothing to do
  956                          * now.
  957                          */
  958                         SCTP_INP_RUNLOCK(inp);
  959                         return (0);
  960                 }
  961                 SCTP_TCB_LOCK(stcb);
  962                 asoc = &stcb->asoc;
  963                 if (TAILQ_EMPTY(&asoc->send_queue) &&
  964                     TAILQ_EMPTY(&asoc->sent_queue) &&
  965                     (asoc->stream_queue_cnt == 0)) {
  966                         if (asoc->locked_on_sending) {
  967                                 goto abort_anyway;
  968                         }
  969                         /* there is nothing queued to send, so I'm done... */
  970                         if (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) {
  971                                 /* only send SHUTDOWN the first time through */
  972                                 sctp_stop_timers_for_shutdown(stcb);
  973                                 sctp_send_shutdown(stcb,
  974                                     stcb->asoc.primary_destination);
  975                                 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_LOCKED);
  976                                 if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
  977                                     (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
  978                                         SCTP_STAT_DECR_GAUGE32(sctps_currestab);
  979                                 }
  980                                 SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT);
  981                                 SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING);
  982                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN,
  983                                     stcb->sctp_ep, stcb,
  984                                     asoc->primary_destination);
  985                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD,
  986                                     stcb->sctp_ep, stcb,
  987                                     asoc->primary_destination);
  988                         }
  989                 } else {
  990                         /*
  991                          * we still got (or just got) data to send, so set
  992                          * SHUTDOWN_PENDING
  993                          */
  994                         asoc->state |= SCTP_STATE_SHUTDOWN_PENDING;
  995                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb,
  996                             asoc->primary_destination);
  997 
  998                         if (asoc->locked_on_sending) {
  999                                 /* Locked to send out the data */
 1000                                 struct sctp_stream_queue_pending *sp;
 1001 
 1002                                 sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead);
 1003                                 if (sp == NULL) {
 1004                                         SCTP_PRINTF("Error, sp is NULL, locked on sending is non-null strm:%d\n",
 1005                                             asoc->locked_on_sending->stream_no);
 1006                                 } else {
 1007                                         if ((sp->length == 0) && (sp->msg_is_complete == 0)) {
 1008                                                 asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT;
 1009                                         }
 1010                                 }
 1011                         }
 1012                         if (TAILQ_EMPTY(&asoc->send_queue) &&
 1013                             TAILQ_EMPTY(&asoc->sent_queue) &&
 1014                             (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
 1015                                 struct mbuf *op_err;
 1016 
 1017                 abort_anyway:
 1018                                 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
 1019                                     0, M_DONTWAIT, 1, MT_DATA);
 1020                                 if (op_err) {
 1021                                         /* Fill in the user initiated abort */
 1022                                         struct sctp_paramhdr *ph;
 1023                                         uint32_t *ippp;
 1024 
 1025                                         SCTP_BUF_LEN(op_err) =
 1026                                             sizeof(struct sctp_paramhdr) + sizeof(uint32_t);
 1027                                         ph = mtod(op_err,
 1028                                             struct sctp_paramhdr *);
 1029                                         ph->param_type = htons(
 1030                                             SCTP_CAUSE_USER_INITIATED_ABT);
 1031                                         ph->param_length = htons(SCTP_BUF_LEN(op_err));
 1032                                         ippp = (uint32_t *) (ph + 1);
 1033                                         *ippp = htonl(SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6);
 1034                                 }
 1035 #if defined(SCTP_PANIC_ON_ABORT)
 1036                                 panic("shutdown does an abort");
 1037 #endif
 1038                                 stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6;
 1039                                 sctp_abort_an_association(stcb->sctp_ep, stcb,
 1040                                     SCTP_RESPONSE_TO_USER_REQ,
 1041                                     op_err, SCTP_SO_LOCKED);
 1042                                 goto skip_unlock;
 1043                         } else {
 1044                                 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
 1045                         }
 1046                 }
 1047                 SCTP_TCB_UNLOCK(stcb);
 1048         }
 1049 skip_unlock:
 1050         SCTP_INP_RUNLOCK(inp);
 1051         return 0;
 1052 }
 1053 
 1054 /*
 1055  * copies a "user" presentable address and removes embedded scope, etc.
 1056  * returns 0 on success, 1 on error
 1057  */
 1058 static uint32_t
 1059 sctp_fill_user_address(struct sockaddr_storage *ss, struct sockaddr *sa)
 1060 {
 1061         struct sockaddr_in6 lsa6;
 1062 
 1063         sa = (struct sockaddr *)sctp_recover_scope((struct sockaddr_in6 *)sa,
 1064             &lsa6);
 1065         memcpy(ss, sa, sa->sa_len);
 1066         return (0);
 1067 }
 1068 
 1069 
 1070 
 1071 /*
 1072  * NOTE: assumes addr lock is held
 1073  */
 1074 static size_t
 1075 sctp_fill_up_addresses_vrf(struct sctp_inpcb *inp,
 1076     struct sctp_tcb *stcb,
 1077     size_t limit,
 1078     struct sockaddr_storage *sas,
 1079     uint32_t vrf_id)
 1080 {
 1081         struct sctp_ifn *sctp_ifn;
 1082         struct sctp_ifa *sctp_ifa;
 1083         int loopback_scope, ipv4_local_scope, local_scope, site_scope;
 1084         size_t actual;
 1085         int ipv4_addr_legal, ipv6_addr_legal;
 1086         struct sctp_vrf *vrf;
 1087 
 1088         actual = 0;
 1089         if (limit <= 0)
 1090                 return (actual);
 1091 
 1092         if (stcb) {
 1093                 /* Turn on all the appropriate scope */
 1094                 loopback_scope = stcb->asoc.loopback_scope;
 1095                 ipv4_local_scope = stcb->asoc.ipv4_local_scope;
 1096                 local_scope = stcb->asoc.local_scope;
 1097                 site_scope = stcb->asoc.site_scope;
 1098         } else {
 1099                 /* Turn on ALL scope, since we look at the EP */
 1100                 loopback_scope = ipv4_local_scope = local_scope =
 1101                     site_scope = 1;
 1102         }
 1103         ipv4_addr_legal = ipv6_addr_legal = 0;
 1104         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
 1105                 ipv6_addr_legal = 1;
 1106                 if (SCTP_IPV6_V6ONLY(inp) == 0) {
 1107                         ipv4_addr_legal = 1;
 1108                 }
 1109         } else {
 1110                 ipv4_addr_legal = 1;
 1111         }
 1112         vrf = sctp_find_vrf(vrf_id);
 1113         if (vrf == NULL) {
 1114                 return (0);
 1115         }
 1116         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
 1117                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
 1118                         if ((loopback_scope == 0) &&
 1119                             SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
 1120                                 /* Skip loopback if loopback_scope not set */
 1121                                 continue;
 1122                         }
 1123                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
 1124                                 if (stcb) {
 1125                                         /*
 1126                                          * For the BOUND-ALL case, the list
 1127                                          * associated with a TCB is Always
 1128                                          * considered a reverse list.. i.e.
 1129                                          * it lists addresses that are NOT
 1130                                          * part of the association. If this
 1131                                          * is one of those we must skip it.
 1132                                          */
 1133                                         if (sctp_is_addr_restricted(stcb,
 1134                                             sctp_ifa)) {
 1135                                                 continue;
 1136                                         }
 1137                                 }
 1138                                 if ((sctp_ifa->address.sa.sa_family == AF_INET) &&
 1139                                     (ipv4_addr_legal)) {
 1140                                         struct sockaddr_in *sin;
 1141 
 1142                                         sin = (struct sockaddr_in *)&sctp_ifa->address.sa;
 1143                                         if (sin->sin_addr.s_addr == 0) {
 1144                                                 /*
 1145                                                  * we skip unspecifed
 1146                                                  * addresses
 1147                                                  */
 1148                                                 continue;
 1149                                         }
 1150                                         if ((ipv4_local_scope == 0) &&
 1151                                             (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
 1152                                                 continue;
 1153                                         }
 1154                                         if (inp->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) {
 1155                                                 in6_sin_2_v4mapsin6(sin, (struct sockaddr_in6 *)sas);
 1156                                                 ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
 1157                                                 sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(struct sockaddr_in6));
 1158                                                 actual += sizeof(struct sockaddr_in6);
 1159                                         } else {
 1160                                                 memcpy(sas, sin, sizeof(*sin));
 1161                                                 ((struct sockaddr_in *)sas)->sin_port = inp->sctp_lport;
 1162                                                 sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(*sin));
 1163                                                 actual += sizeof(*sin);
 1164                                         }
 1165                                         if (actual >= limit) {
 1166                                                 return (actual);
 1167                                         }
 1168                                 } else if ((sctp_ifa->address.sa.sa_family == AF_INET6) &&
 1169                                     (ipv6_addr_legal)) {
 1170                                         struct sockaddr_in6 *sin6;
 1171 
 1172                                         sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa;
 1173                                         if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
 1174                                                 /*
 1175                                                  * we skip unspecifed
 1176                                                  * addresses
 1177                                                  */
 1178                                                 continue;
 1179                                         }
 1180                                         if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
 1181                                                 if (local_scope == 0)
 1182                                                         continue;
 1183                                                 if (sin6->sin6_scope_id == 0) {
 1184                                                         if (sa6_recoverscope(sin6) != 0)
 1185                                                                 /*
 1186                                                                  * bad link
 1187                                                                  * local
 1188                                                                  * address
 1189                                                                  */
 1190                                                                 continue;
 1191                                                 }
 1192                                         }
 1193                                         if ((site_scope == 0) &&
 1194                                             (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
 1195                                                 continue;
 1196                                         }
 1197                                         memcpy(sas, sin6, sizeof(*sin6));
 1198                                         ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
 1199                                         sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(*sin6));
 1200                                         actual += sizeof(*sin6);
 1201                                         if (actual >= limit) {
 1202                                                 return (actual);
 1203                                         }
 1204                                 }
 1205                         }
 1206                 }
 1207         } else {
 1208                 struct sctp_laddr *laddr;
 1209 
 1210                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
 1211                         if (stcb) {
 1212                                 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
 1213                                         continue;
 1214                                 }
 1215                         }
 1216                         if (sctp_fill_user_address(sas, &laddr->ifa->address.sa))
 1217                                 continue;
 1218 
 1219                         ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
 1220                         sas = (struct sockaddr_storage *)((caddr_t)sas +
 1221                             laddr->ifa->address.sa.sa_len);
 1222                         actual += laddr->ifa->address.sa.sa_len;
 1223                         if (actual >= limit) {
 1224                                 return (actual);
 1225                         }
 1226                 }
 1227         }
 1228         return (actual);
 1229 }
 1230 
 1231 static size_t
 1232 sctp_fill_up_addresses(struct sctp_inpcb *inp,
 1233     struct sctp_tcb *stcb,
 1234     size_t limit,
 1235     struct sockaddr_storage *sas)
 1236 {
 1237         size_t size = 0;
 1238 
 1239         SCTP_IPI_ADDR_RLOCK();
 1240         /* fill up addresses for the endpoint's default vrf */
 1241         size = sctp_fill_up_addresses_vrf(inp, stcb, limit, sas,
 1242             inp->def_vrf_id);
 1243         SCTP_IPI_ADDR_RUNLOCK();
 1244         return (size);
 1245 }
 1246 
 1247 /*
 1248  * NOTE: assumes addr lock is held
 1249  */
 1250 static int
 1251 sctp_count_max_addresses_vrf(struct sctp_inpcb *inp, uint32_t vrf_id)
 1252 {
 1253         int cnt = 0;
 1254         struct sctp_vrf *vrf = NULL;
 1255 
 1256         /*
 1257          * In both sub-set bound an bound_all cases we return the MAXIMUM
 1258          * number of addresses that you COULD get. In reality the sub-set
 1259          * bound may have an exclusion list for a given TCB OR in the
 1260          * bound-all case a TCB may NOT include the loopback or other
 1261          * addresses as well.
 1262          */
 1263         vrf = sctp_find_vrf(vrf_id);
 1264         if (vrf == NULL) {
 1265                 return (0);
 1266         }
 1267         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
 1268                 struct sctp_ifn *sctp_ifn;
 1269                 struct sctp_ifa *sctp_ifa;
 1270 
 1271                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
 1272                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
 1273                                 /* Count them if they are the right type */
 1274                                 if (sctp_ifa->address.sa.sa_family == AF_INET) {
 1275                                         if (inp->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)
 1276                                                 cnt += sizeof(struct sockaddr_in6);
 1277                                         else
 1278                                                 cnt += sizeof(struct sockaddr_in);
 1279 
 1280                                 } else if (sctp_ifa->address.sa.sa_family == AF_INET6)
 1281                                         cnt += sizeof(struct sockaddr_in6);
 1282                         }
 1283                 }
 1284         } else {
 1285                 struct sctp_laddr *laddr;
 1286 
 1287                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
 1288                         if (laddr->ifa->address.sa.sa_family == AF_INET) {
 1289                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)
 1290                                         cnt += sizeof(struct sockaddr_in6);
 1291                                 else
 1292                                         cnt += sizeof(struct sockaddr_in);
 1293 
 1294                         } else if (laddr->ifa->address.sa.sa_family == AF_INET6)
 1295                                 cnt += sizeof(struct sockaddr_in6);
 1296                 }
 1297         }
 1298         return (cnt);
 1299 }
 1300 
 1301 static int
 1302 sctp_count_max_addresses(struct sctp_inpcb *inp)
 1303 {
 1304         int cnt = 0;
 1305 
 1306         SCTP_IPI_ADDR_RLOCK();
 1307         /* count addresses for the endpoint's default VRF */
 1308         cnt = sctp_count_max_addresses_vrf(inp, inp->def_vrf_id);
 1309         SCTP_IPI_ADDR_RUNLOCK();
 1310         return (cnt);
 1311 }
 1312 
 1313 static int
 1314 sctp_do_connect_x(struct socket *so, struct sctp_inpcb *inp, void *optval,
 1315     size_t optsize, void *p, int delay)
 1316 {
 1317         int error = 0;
 1318         int creat_lock_on = 0;
 1319         struct sctp_tcb *stcb = NULL;
 1320         struct sockaddr *sa;
 1321         int num_v6 = 0, num_v4 = 0, *totaddrp, totaddr;
 1322         int added = 0;
 1323         uint32_t vrf_id;
 1324         int bad_addresses = 0;
 1325         sctp_assoc_t *a_id;
 1326 
 1327         SCTPDBG(SCTP_DEBUG_PCB1, "Connectx called\n");
 1328 
 1329         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
 1330             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
 1331                 /* We are already connected AND the TCP model */
 1332                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
 1333                 return (EADDRINUSE);
 1334         }
 1335         if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
 1336                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 1337                 return (EINVAL);
 1338         }
 1339         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
 1340                 SCTP_INP_RLOCK(inp);
 1341                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
 1342                 SCTP_INP_RUNLOCK(inp);
 1343         }
 1344         if (stcb) {
 1345                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
 1346                 return (EALREADY);
 1347         }
 1348         SCTP_INP_INCR_REF(inp);
 1349         SCTP_ASOC_CREATE_LOCK(inp);
 1350         creat_lock_on = 1;
 1351         if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
 1352             (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
 1353                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EFAULT);
 1354                 error = EFAULT;
 1355                 goto out_now;
 1356         }
 1357         totaddrp = (int *)optval;
 1358         totaddr = *totaddrp;
 1359         sa = (struct sockaddr *)(totaddrp + 1);
 1360         stcb = sctp_connectx_helper_find(inp, sa, &totaddr, &num_v4, &num_v6, &error, (optsize - sizeof(int)), &bad_addresses);
 1361         if ((stcb != NULL) || bad_addresses) {
 1362                 /* Already have or am bring up an association */
 1363                 SCTP_ASOC_CREATE_UNLOCK(inp);
 1364                 creat_lock_on = 0;
 1365                 if (stcb)
 1366                         SCTP_TCB_UNLOCK(stcb);
 1367                 if (bad_addresses == 0) {
 1368                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
 1369                         error = EALREADY;
 1370                 }
 1371                 goto out_now;
 1372         }
 1373 #ifdef INET6
 1374         if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) &&
 1375             (num_v6 > 0)) {
 1376                 error = EINVAL;
 1377                 goto out_now;
 1378         }
 1379         if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
 1380             (num_v4 > 0)) {
 1381                 struct in6pcb *inp6;
 1382 
 1383                 inp6 = (struct in6pcb *)inp;
 1384                 if (SCTP_IPV6_V6ONLY(inp6)) {
 1385                         /*
 1386                          * if IPV6_V6ONLY flag, ignore connections destined
 1387                          * to a v4 addr or v4-mapped addr
 1388                          */
 1389                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 1390                         error = EINVAL;
 1391                         goto out_now;
 1392                 }
 1393         }
 1394 #endif                          /* INET6 */
 1395         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
 1396             SCTP_PCB_FLAGS_UNBOUND) {
 1397                 /* Bind a ephemeral port */
 1398                 error = sctp_inpcb_bind(so, NULL, NULL, p);
 1399                 if (error) {
 1400                         goto out_now;
 1401                 }
 1402         }
 1403         /* FIX ME: do we want to pass in a vrf on the connect call? */
 1404         vrf_id = inp->def_vrf_id;
 1405 
 1406         /* We are GOOD to go */
 1407         stcb = sctp_aloc_assoc(inp, sa, 1, &error, 0, vrf_id,
 1408             (struct thread *)p
 1409             );
 1410         if (stcb == NULL) {
 1411                 /* Gak! no memory */
 1412                 goto out_now;
 1413         }
 1414         SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_COOKIE_WAIT);
 1415         /* move to second address */
 1416         if (sa->sa_family == AF_INET)
 1417                 sa = (struct sockaddr *)((caddr_t)sa + sizeof(struct sockaddr_in));
 1418         else
 1419                 sa = (struct sockaddr *)((caddr_t)sa + sizeof(struct sockaddr_in6));
 1420 
 1421         error = 0;
 1422         added = sctp_connectx_helper_add(stcb, sa, (totaddr - 1), &error);
 1423         /* Fill in the return id */
 1424         if (error) {
 1425                 (void)sctp_free_assoc(inp, stcb, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_12);
 1426                 goto out_now;
 1427         }
 1428         a_id = (sctp_assoc_t *) optval;
 1429         *a_id = sctp_get_associd(stcb);
 1430 
 1431         /* initialize authentication parameters for the assoc */
 1432         sctp_initialize_auth_params(inp, stcb);
 1433 
 1434         if (delay) {
 1435                 /* doing delayed connection */
 1436                 stcb->asoc.delayed_connection = 1;
 1437                 sctp_timer_start(SCTP_TIMER_TYPE_INIT, inp, stcb, stcb->asoc.primary_destination);
 1438         } else {
 1439                 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
 1440                 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
 1441         }
 1442         SCTP_TCB_UNLOCK(stcb);
 1443         if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
 1444                 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
 1445                 /* Set the connected flag so we can queue data */
 1446                 soisconnecting(so);
 1447         }
 1448 out_now:
 1449         if (creat_lock_on) {
 1450                 SCTP_ASOC_CREATE_UNLOCK(inp);
 1451         }
 1452         SCTP_INP_DECR_REF(inp);
 1453         return error;
 1454 }
 1455 
 1456 #define SCTP_FIND_STCB(inp, stcb, assoc_id) { \
 1457         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||\
 1458             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { \
 1459                 SCTP_INP_RLOCK(inp); \
 1460                 stcb = LIST_FIRST(&inp->sctp_asoc_list); \
 1461                 if (stcb) { \
 1462                         SCTP_TCB_LOCK(stcb); \
 1463                 } \
 1464                 SCTP_INP_RUNLOCK(inp); \
 1465         } else if (assoc_id != 0) { \
 1466                 stcb = sctp_findassociation_ep_asocid(inp, assoc_id, 1); \
 1467                 if (stcb == NULL) { \
 1468                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT); \
 1469                         error = ENOENT; \
 1470                         break; \
 1471                 } \
 1472         } else { \
 1473                 stcb = NULL; \
 1474         } \
 1475   }
 1476 
 1477 
 1478 #define SCTP_CHECK_AND_CAST(destp, srcp, type, size)  {\
 1479         if (size < sizeof(type)) { \
 1480                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); \
 1481                 error = EINVAL; \
 1482                 break; \
 1483         } else { \
 1484                 destp = (type *)srcp; \
 1485         } \
 1486       }
 1487 
 1488 static int
 1489 sctp_getopt(struct socket *so, int optname, void *optval, size_t *optsize,
 1490     void *p)
 1491 {
 1492         struct sctp_inpcb *inp = NULL;
 1493         int error, val = 0;
 1494         struct sctp_tcb *stcb = NULL;
 1495 
 1496         if (optval == NULL) {
 1497                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 1498                 return (EINVAL);
 1499         }
 1500         inp = (struct sctp_inpcb *)so->so_pcb;
 1501         if (inp == 0) {
 1502                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 1503                 return EINVAL;
 1504         }
 1505         error = 0;
 1506 
 1507         switch (optname) {
 1508         case SCTP_NODELAY:
 1509         case SCTP_AUTOCLOSE:
 1510         case SCTP_EXPLICIT_EOR:
 1511         case SCTP_AUTO_ASCONF:
 1512         case SCTP_DISABLE_FRAGMENTS:
 1513         case SCTP_I_WANT_MAPPED_V4_ADDR:
 1514         case SCTP_USE_EXT_RCVINFO:
 1515                 SCTP_INP_RLOCK(inp);
 1516                 switch (optname) {
 1517                 case SCTP_DISABLE_FRAGMENTS:
 1518                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NO_FRAGMENT);
 1519                         break;
 1520                 case SCTP_I_WANT_MAPPED_V4_ADDR:
 1521                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4);
 1522                         break;
 1523                 case SCTP_AUTO_ASCONF:
 1524                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
 1525                                 /* only valid for bound all sockets */
 1526                                 val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
 1527                         } else {
 1528                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 1529                                 error = EINVAL;
 1530                                 goto flags_out;
 1531                         }
 1532                         break;
 1533                 case SCTP_EXPLICIT_EOR:
 1534                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
 1535                         break;
 1536                 case SCTP_NODELAY:
 1537                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NODELAY);
 1538                         break;
 1539                 case SCTP_USE_EXT_RCVINFO:
 1540                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO);
 1541                         break;
 1542                 case SCTP_AUTOCLOSE:
 1543                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTOCLOSE))
 1544                                 val = TICKS_TO_SEC(inp->sctp_ep.auto_close_time);
 1545                         else
 1546                                 val = 0;
 1547                         break;
 1548 
 1549                 default:
 1550                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
 1551                         error = ENOPROTOOPT;
 1552                 }               /* end switch (sopt->sopt_name) */
 1553                 if (optname != SCTP_AUTOCLOSE) {
 1554                         /* make it an "on/off" value */
 1555                         val = (val != 0);
 1556                 }
 1557                 if (*optsize < sizeof(val)) {
 1558                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 1559                         error = EINVAL;
 1560                 }
 1561 flags_out:
 1562                 SCTP_INP_RUNLOCK(inp);
 1563                 if (error == 0) {
 1564                         /* return the option value */
 1565                         *(int *)optval = val;
 1566                         *optsize = sizeof(val);
 1567                 }
 1568                 break;
 1569         case SCTP_GET_PACKET_LOG:
 1570                 {
 1571 #ifdef  SCTP_PACKET_LOGGING
 1572                         uint8_t *target;
 1573                         int ret;
 1574 
 1575                         SCTP_CHECK_AND_CAST(target, optval, uint8_t, *optsize);
 1576                         ret = sctp_copy_out_packet_log(target, (int)*optsize);
 1577                         *optsize = ret;
 1578 #else
 1579                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
 1580                         error = EOPNOTSUPP;
 1581 #endif
 1582                         break;
 1583                 }
 1584         case SCTP_PARTIAL_DELIVERY_POINT:
 1585                 {
 1586                         uint32_t *value;
 1587 
 1588                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
 1589                         *value = inp->partial_delivery_point;
 1590                         *optsize = sizeof(uint32_t);
 1591                 }
 1592                 break;
 1593         case SCTP_FRAGMENT_INTERLEAVE:
 1594                 {
 1595                         uint32_t *value;
 1596 
 1597                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
 1598                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) {
 1599                                 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) {
 1600                                         *value = SCTP_FRAG_LEVEL_2;
 1601                                 } else {
 1602                                         *value = SCTP_FRAG_LEVEL_1;
 1603                                 }
 1604                         } else {
 1605                                 *value = SCTP_FRAG_LEVEL_0;
 1606                         }
 1607                         *optsize = sizeof(uint32_t);
 1608                 }
 1609                 break;
 1610         case SCTP_CMT_ON_OFF:
 1611                 {
 1612                         struct sctp_assoc_value *av;
 1613 
 1614                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
 1615                         if (sctp_cmt_on_off) {
 1616                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
 1617                                 if (stcb) {
 1618                                         av->assoc_value = stcb->asoc.sctp_cmt_on_off;
 1619                                         SCTP_TCB_UNLOCK(stcb);
 1620 
 1621                                 } else {
 1622                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
 1623                                         error = ENOTCONN;
 1624                                 }
 1625                         } else {
 1626                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
 1627                                 error = ENOPROTOOPT;
 1628                         }
 1629                         *optsize = sizeof(*av);
 1630                 }
 1631                 break;
 1632                 /* JRS - Get socket option for pluggable congestion control */
 1633         case SCTP_PLUGGABLE_CC:
 1634                 {
 1635                         struct sctp_assoc_value *av;
 1636 
 1637                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
 1638                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
 1639                         if (stcb) {
 1640                                 av->assoc_value = stcb->asoc.congestion_control_module;
 1641                                 SCTP_TCB_UNLOCK(stcb);
 1642                         } else {
 1643                                 av->assoc_value = inp->sctp_ep.sctp_default_cc_module;
 1644                         }
 1645                         *optsize = sizeof(*av);
 1646                 }
 1647                 break;
 1648         case SCTP_GET_ADDR_LEN:
 1649                 {
 1650                         struct sctp_assoc_value *av;
 1651 
 1652                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
 1653                         error = EINVAL;
 1654 #ifdef INET
 1655                         if (av->assoc_value == AF_INET) {
 1656                                 av->assoc_value = sizeof(struct sockaddr_in);
 1657                                 error = 0;
 1658                         }
 1659 #endif
 1660 #ifdef INET6
 1661                         if (av->assoc_value == AF_INET6) {
 1662                                 av->assoc_value = sizeof(struct sockaddr_in6);
 1663                                 error = 0;
 1664                         }
 1665 #endif
 1666                         if (error) {
 1667                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 1668                         }
 1669                         *optsize = sizeof(*av);
 1670                 }
 1671                 break;
 1672         case SCTP_GET_ASSOC_NUMBER:
 1673                 {
 1674                         uint32_t *value, cnt;
 1675 
 1676                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
 1677                         cnt = 0;
 1678                         SCTP_INP_RLOCK(inp);
 1679                         LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
 1680                                 cnt++;
 1681                         }
 1682                         SCTP_INP_RUNLOCK(inp);
 1683                         *value = cnt;
 1684                         *optsize = sizeof(uint32_t);
 1685                 }
 1686                 break;
 1687 
 1688         case SCTP_GET_ASSOC_ID_LIST:
 1689                 {
 1690                         struct sctp_assoc_ids *ids;
 1691                         unsigned int at, limit;
 1692 
 1693                         SCTP_CHECK_AND_CAST(ids, optval, struct sctp_assoc_ids, *optsize);
 1694                         at = 0;
 1695                         limit = *optsize / sizeof(sctp_assoc_t);
 1696                         SCTP_INP_RLOCK(inp);
 1697                         LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
 1698                                 if (at < limit) {
 1699                                         ids->gaids_assoc_id[at++] = sctp_get_associd(stcb);
 1700                                 } else {
 1701                                         error = EINVAL;
 1702                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 1703                                         break;
 1704                                 }
 1705                         }
 1706                         SCTP_INP_RUNLOCK(inp);
 1707                         *optsize = at * sizeof(sctp_assoc_t);
 1708                 }
 1709                 break;
 1710         case SCTP_CONTEXT:
 1711                 {
 1712                         struct sctp_assoc_value *av;
 1713 
 1714                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
 1715                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
 1716 
 1717                         if (stcb) {
 1718                                 av->assoc_value = stcb->asoc.context;
 1719                                 SCTP_TCB_UNLOCK(stcb);
 1720                         } else {
 1721                                 SCTP_INP_RLOCK(inp);
 1722                                 av->assoc_value = inp->sctp_context;
 1723                                 SCTP_INP_RUNLOCK(inp);
 1724                         }
 1725                         *optsize = sizeof(*av);
 1726                 }
 1727                 break;
 1728         case SCTP_VRF_ID:
 1729                 {
 1730                         uint32_t *default_vrfid;
 1731 
 1732                         SCTP_CHECK_AND_CAST(default_vrfid, optval, uint32_t, *optsize);
 1733                         *default_vrfid = inp->def_vrf_id;
 1734                         break;
 1735                 }
 1736         case SCTP_GET_ASOC_VRF:
 1737                 {
 1738                         struct sctp_assoc_value *id;
 1739 
 1740                         SCTP_CHECK_AND_CAST(id, optval, struct sctp_assoc_value, *optsize);
 1741                         SCTP_FIND_STCB(inp, stcb, id->assoc_id);
 1742                         if (stcb == NULL) {
 1743                                 error = EINVAL;
 1744                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 1745                                 break;
 1746                         }
 1747                         id->assoc_value = stcb->asoc.vrf_id;
 1748                         break;
 1749                 }
 1750         case SCTP_GET_VRF_IDS:
 1751                 {
 1752                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
 1753                         error = EOPNOTSUPP;
 1754                         break;
 1755                 }
 1756         case SCTP_GET_NONCE_VALUES:
 1757                 {
 1758                         struct sctp_get_nonce_values *gnv;
 1759 
 1760                         SCTP_CHECK_AND_CAST(gnv, optval, struct sctp_get_nonce_values, *optsize);
 1761                         SCTP_FIND_STCB(inp, stcb, gnv->gn_assoc_id);
 1762 
 1763                         if (stcb) {
 1764                                 gnv->gn_peers_tag = stcb->asoc.peer_vtag;
 1765                                 gnv->gn_local_tag = stcb->asoc.my_vtag;
 1766                                 SCTP_TCB_UNLOCK(stcb);
 1767                         } else {
 1768                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
 1769                                 error = ENOTCONN;
 1770                         }
 1771                         *optsize = sizeof(*gnv);
 1772                 }
 1773                 break;
 1774         case SCTP_DELAYED_SACK:
 1775                 {
 1776                         struct sctp_sack_info *sack;
 1777 
 1778                         SCTP_CHECK_AND_CAST(sack, optval, struct sctp_sack_info, *optsize);
 1779                         SCTP_FIND_STCB(inp, stcb, sack->sack_assoc_id);
 1780                         if (stcb) {
 1781                                 sack->sack_delay = stcb->asoc.delayed_ack;
 1782                                 sack->sack_freq = stcb->asoc.sack_freq;
 1783                                 SCTP_TCB_UNLOCK(stcb);
 1784                         } else {
 1785                                 SCTP_INP_RLOCK(inp);
 1786                                 sack->sack_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
 1787                                 sack->sack_freq = inp->sctp_ep.sctp_sack_freq;
 1788                                 SCTP_INP_RUNLOCK(inp);
 1789                         }
 1790                         *optsize = sizeof(*sack);
 1791                 }
 1792                 break;
 1793 
 1794         case SCTP_GET_SNDBUF_USE:
 1795                 {
 1796                         struct sctp_sockstat *ss;
 1797 
 1798                         SCTP_CHECK_AND_CAST(ss, optval, struct sctp_sockstat, *optsize);
 1799                         SCTP_FIND_STCB(inp, stcb, ss->ss_assoc_id);
 1800 
 1801                         if (stcb) {
 1802                                 ss->ss_total_sndbuf = stcb->asoc.total_output_queue_size;
 1803                                 ss->ss_total_recv_buf = (stcb->asoc.size_on_reasm_queue +
 1804                                     stcb->asoc.size_on_all_streams);
 1805                                 SCTP_TCB_UNLOCK(stcb);
 1806                         } else {
 1807                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
 1808                                 error = ENOTCONN;
 1809                         }
 1810                         *optsize = sizeof(struct sctp_sockstat);
 1811                 }
 1812                 break;
 1813         case SCTP_MAX_BURST:
 1814                 {
 1815                         uint8_t *value;
 1816 
 1817                         SCTP_CHECK_AND_CAST(value, optval, uint8_t, *optsize);
 1818 
 1819                         SCTP_INP_RLOCK(inp);
 1820                         *value = inp->sctp_ep.max_burst;
 1821                         SCTP_INP_RUNLOCK(inp);
 1822                         *optsize = sizeof(uint8_t);
 1823                 }
 1824                 break;
 1825         case SCTP_MAXSEG:
 1826                 {
 1827                         struct sctp_assoc_value *av;
 1828                         int ovh;
 1829 
 1830                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
 1831                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
 1832 
 1833                         if (stcb) {
 1834                                 av->assoc_value = sctp_get_frag_point(stcb, &stcb->asoc);
 1835                                 SCTP_TCB_UNLOCK(stcb);
 1836                         } else {
 1837                                 SCTP_INP_RLOCK(inp);
 1838                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
 1839                                         ovh = SCTP_MED_OVERHEAD;
 1840                                 } else {
 1841                                         ovh = SCTP_MED_V4_OVERHEAD;
 1842                                 }
 1843                                 if (inp->sctp_frag_point >= SCTP_DEFAULT_MAXSEGMENT)
 1844                                         av->assoc_value = 0;
 1845                                 else
 1846                                         av->assoc_value = inp->sctp_frag_point - ovh;
 1847                                 SCTP_INP_RUNLOCK(inp);
 1848                         }
 1849                         *optsize = sizeof(struct sctp_assoc_value);
 1850                 }
 1851                 break;
 1852         case SCTP_GET_STAT_LOG:
 1853                 error = sctp_fill_stat_log(optval, optsize);
 1854                 break;
 1855         case SCTP_EVENTS:
 1856                 {
 1857                         struct sctp_event_subscribe *events;
 1858 
 1859                         SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, *optsize);
 1860                         memset(events, 0, sizeof(*events));
 1861                         SCTP_INP_RLOCK(inp);
 1862                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT))
 1863                                 events->sctp_data_io_event = 1;
 1864 
 1865                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT))
 1866                                 events->sctp_association_event = 1;
 1867 
 1868                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT))
 1869                                 events->sctp_address_event = 1;
 1870 
 1871                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT))
 1872                                 events->sctp_send_failure_event = 1;
 1873 
 1874                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR))
 1875                                 events->sctp_peer_error_event = 1;
 1876 
 1877                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT))
 1878                                 events->sctp_shutdown_event = 1;
 1879 
 1880                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT))
 1881                                 events->sctp_partial_delivery_event = 1;
 1882 
 1883                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT))
 1884                                 events->sctp_adaptation_layer_event = 1;
 1885 
 1886                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT))
 1887                                 events->sctp_authentication_event = 1;
 1888 
 1889                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT))
 1890                                 events->sctp_stream_reset_events = 1;
 1891                         SCTP_INP_RUNLOCK(inp);
 1892                         *optsize = sizeof(struct sctp_event_subscribe);
 1893                 }
 1894                 break;
 1895 
 1896         case SCTP_ADAPTATION_LAYER:
 1897                 {
 1898                         uint32_t *value;
 1899 
 1900                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
 1901 
 1902                         SCTP_INP_RLOCK(inp);
 1903                         *value = inp->sctp_ep.adaptation_layer_indicator;
 1904                         SCTP_INP_RUNLOCK(inp);
 1905                         *optsize = sizeof(uint32_t);
 1906                 }
 1907                 break;
 1908         case SCTP_SET_INITIAL_DBG_SEQ:
 1909                 {
 1910                         uint32_t *value;
 1911 
 1912                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
 1913                         SCTP_INP_RLOCK(inp);
 1914                         *value = inp->sctp_ep.initial_sequence_debug;
 1915                         SCTP_INP_RUNLOCK(inp);
 1916                         *optsize = sizeof(uint32_t);
 1917                 }
 1918                 break;
 1919         case SCTP_GET_LOCAL_ADDR_SIZE:
 1920                 {
 1921                         uint32_t *value;
 1922 
 1923                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
 1924                         SCTP_INP_RLOCK(inp);
 1925                         *value = sctp_count_max_addresses(inp);
 1926                         SCTP_INP_RUNLOCK(inp);
 1927                         *optsize = sizeof(uint32_t);
 1928                 }
 1929                 break;
 1930         case SCTP_GET_REMOTE_ADDR_SIZE:
 1931                 {
 1932                         uint32_t *value;
 1933                         size_t size;
 1934                         struct sctp_nets *net;
 1935 
 1936                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
 1937                         /* FIXME MT: change to sctp_assoc_value? */
 1938                         SCTP_FIND_STCB(inp, stcb, (sctp_assoc_t) * value);
 1939 
 1940                         if (stcb) {
 1941                                 size = 0;
 1942                                 /* Count the sizes */
 1943                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 1944                                         if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) ||
 1945                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) {
 1946                                                 size += sizeof(struct sockaddr_in6);
 1947                                         } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) {
 1948                                                 size += sizeof(struct sockaddr_in);
 1949                                         } else {
 1950                                                 /* huh */
 1951                                                 break;
 1952                                         }
 1953                                 }
 1954                                 SCTP_TCB_UNLOCK(stcb);
 1955                                 *value = (uint32_t) size;
 1956                         } else {
 1957                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
 1958                                 error = ENOTCONN;
 1959                         }
 1960                         *optsize = sizeof(uint32_t);
 1961                 }
 1962                 break;
 1963         case SCTP_GET_PEER_ADDRESSES:
 1964                 /*
 1965                  * Get the address information, an array is passed in to
 1966                  * fill up we pack it.
 1967                  */
 1968                 {
 1969                         size_t cpsz, left;
 1970                         struct sockaddr_storage *sas;
 1971                         struct sctp_nets *net;
 1972                         struct sctp_getaddresses *saddr;
 1973 
 1974                         SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize);
 1975                         SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id);
 1976 
 1977                         if (stcb) {
 1978                                 left = (*optsize) - sizeof(struct sctp_getaddresses);
 1979                                 *optsize = sizeof(struct sctp_getaddresses);
 1980                                 sas = (struct sockaddr_storage *)&saddr->addr[0];
 1981 
 1982                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 1983                                         if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) ||
 1984                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) {
 1985                                                 cpsz = sizeof(struct sockaddr_in6);
 1986                                         } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) {
 1987                                                 cpsz = sizeof(struct sockaddr_in);
 1988                                         } else {
 1989                                                 /* huh */
 1990                                                 break;
 1991                                         }
 1992                                         if (left < cpsz) {
 1993                                                 /* not enough room. */
 1994                                                 break;
 1995                                         }
 1996                                         if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) &&
 1997                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET)) {
 1998                                                 /* Must map the address */
 1999                                                 in6_sin_2_v4mapsin6((struct sockaddr_in *)&net->ro._l_addr,
 2000                                                     (struct sockaddr_in6 *)sas);
 2001                                         } else {
 2002                                                 memcpy(sas, &net->ro._l_addr, cpsz);
 2003                                         }
 2004                                         ((struct sockaddr_in *)sas)->sin_port = stcb->rport;
 2005 
 2006                                         sas = (struct sockaddr_storage *)((caddr_t)sas + cpsz);
 2007                                         left -= cpsz;
 2008                                         *optsize += cpsz;
 2009                                 }
 2010                                 SCTP_TCB_UNLOCK(stcb);
 2011                         } else {
 2012                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
 2013                                 error = ENOENT;
 2014                         }
 2015                 }
 2016                 break;
 2017         case SCTP_GET_LOCAL_ADDRESSES:
 2018                 {
 2019                         size_t limit, actual;
 2020                         struct sockaddr_storage *sas;
 2021                         struct sctp_getaddresses *saddr;
 2022 
 2023                         SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize);
 2024                         SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id);
 2025 
 2026                         sas = (struct sockaddr_storage *)&saddr->addr[0];
 2027                         limit = *optsize - sizeof(sctp_assoc_t);
 2028                         actual = sctp_fill_up_addresses(inp, stcb, limit, sas);
 2029                         if (stcb) {
 2030                                 SCTP_TCB_UNLOCK(stcb);
 2031                         }
 2032                         *optsize = sizeof(struct sockaddr_storage) + actual;
 2033                 }
 2034                 break;
 2035         case SCTP_PEER_ADDR_PARAMS:
 2036                 {
 2037                         struct sctp_paddrparams *paddrp;
 2038                         struct sctp_nets *net;
 2039 
 2040                         SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, *optsize);
 2041                         SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id);
 2042 
 2043                         net = NULL;
 2044                         if (stcb) {
 2045                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address);
 2046                         } else {
 2047                                 /*
 2048                                  * We increment here since
 2049                                  * sctp_findassociation_ep_addr() wil do a
 2050                                  * decrement if it finds the stcb as long as
 2051                                  * the locked tcb (last argument) is NOT a
 2052                                  * TCB.. aka NULL.
 2053                                  */
 2054                                 SCTP_INP_INCR_REF(inp);
 2055                                 stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddrp->spp_address, &net, NULL, NULL);
 2056                                 if (stcb == NULL) {
 2057                                         SCTP_INP_DECR_REF(inp);
 2058                                 }
 2059                         }
 2060                         if (stcb && (net == NULL)) {
 2061                                 struct sockaddr *sa;
 2062 
 2063                                 sa = (struct sockaddr *)&paddrp->spp_address;
 2064                                 if (sa->sa_family == AF_INET) {
 2065                                         struct sockaddr_in *sin;
 2066 
 2067                                         sin = (struct sockaddr_in *)sa;
 2068                                         if (sin->sin_addr.s_addr) {
 2069                                                 error = EINVAL;
 2070                                                 SCTP_TCB_UNLOCK(stcb);
 2071                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 2072                                                 break;
 2073                                         }
 2074                                 } else if (sa->sa_family == AF_INET6) {
 2075                                         struct sockaddr_in6 *sin6;
 2076 
 2077                                         sin6 = (struct sockaddr_in6 *)sa;
 2078                                         if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
 2079                                                 error = EINVAL;
 2080                                                 SCTP_TCB_UNLOCK(stcb);
 2081                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 2082                                                 break;
 2083                                         }
 2084                                 } else {
 2085                                         error = EAFNOSUPPORT;
 2086                                         SCTP_TCB_UNLOCK(stcb);
 2087                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 2088                                         break;
 2089                                 }
 2090                         }
 2091                         if (stcb) {
 2092                                 /* Applys to the specific association */
 2093                                 paddrp->spp_flags = 0;
 2094                                 if (net) {
 2095                                         int ovh;
 2096 
 2097                                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
 2098                                                 ovh = SCTP_MED_OVERHEAD;
 2099                                         } else {
 2100                                                 ovh = SCTP_MED_V4_OVERHEAD;
 2101                                         }
 2102 
 2103 
 2104                                         paddrp->spp_pathmaxrxt = net->failure_threshold;
 2105                                         paddrp->spp_pathmtu = net->mtu - ovh;
 2106                                         /* get flags for HB */
 2107                                         if (net->dest_state & SCTP_ADDR_NOHB)
 2108                                                 paddrp->spp_flags |= SPP_HB_DISABLE;
 2109                                         else
 2110                                                 paddrp->spp_flags |= SPP_HB_ENABLE;
 2111                                         /* get flags for PMTU */
 2112                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
 2113                                                 paddrp->spp_flags |= SPP_PMTUD_ENABLE;
 2114                                         } else {
 2115                                                 paddrp->spp_flags |= SPP_PMTUD_DISABLE;
 2116                                         }
 2117 #ifdef INET
 2118                                         if (net->ro._l_addr.sin.sin_family == AF_INET) {
 2119                                                 paddrp->spp_ipv4_tos = net->tos_flowlabel & 0x000000fc;
 2120                                                 paddrp->spp_flags |= SPP_IPV4_TOS;
 2121                                         }
 2122 #endif
 2123 #ifdef INET6
 2124                                         if (net->ro._l_addr.sin6.sin6_family == AF_INET6) {
 2125                                                 paddrp->spp_ipv6_flowlabel = net->tos_flowlabel;
 2126                                                 paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
 2127                                         }
 2128 #endif
 2129                                 } else {
 2130                                         /*
 2131                                          * No destination so return default
 2132                                          * value
 2133                                          */
 2134                                         int cnt = 0;
 2135 
 2136                                         paddrp->spp_pathmaxrxt = stcb->asoc.def_net_failure;
 2137                                         paddrp->spp_pathmtu = sctp_get_frag_point(stcb, &stcb->asoc);
 2138 #ifdef INET
 2139                                         paddrp->spp_ipv4_tos = stcb->asoc.default_tos & 0x000000fc;
 2140                                         paddrp->spp_flags |= SPP_IPV4_TOS;
 2141 #endif
 2142 #ifdef INET6
 2143                                         paddrp->spp_ipv6_flowlabel = stcb->asoc.default_flowlabel;
 2144                                         paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
 2145 #endif
 2146                                         /* default settings should be these */
 2147                                         if (stcb->asoc.hb_is_disabled == 0) {
 2148                                                 paddrp->spp_flags |= SPP_HB_ENABLE;
 2149                                         } else {
 2150                                                 paddrp->spp_flags |= SPP_HB_DISABLE;
 2151                                         }
 2152                                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 2153                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
 2154                                                         cnt++;
 2155                                                 }
 2156                                         }
 2157                                         if (cnt) {
 2158                                                 paddrp->spp_flags |= SPP_PMTUD_ENABLE;
 2159                                         }
 2160                                 }
 2161                                 paddrp->spp_hbinterval = stcb->asoc.heart_beat_delay;
 2162                                 paddrp->spp_assoc_id = sctp_get_associd(stcb);
 2163                                 SCTP_TCB_UNLOCK(stcb);
 2164                         } else {
 2165                                 /* Use endpoint defaults */
 2166                                 SCTP_INP_RLOCK(inp);
 2167                                 paddrp->spp_pathmaxrxt = inp->sctp_ep.def_net_failure;
 2168                                 paddrp->spp_hbinterval = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
 2169                                 paddrp->spp_assoc_id = (sctp_assoc_t) 0;
 2170                                 /* get inp's default */
 2171 #ifdef INET
 2172                                 paddrp->spp_ipv4_tos = inp->ip_inp.inp.inp_ip_tos;
 2173                                 paddrp->spp_flags |= SPP_IPV4_TOS;
 2174 #endif
 2175 #ifdef INET6
 2176                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
 2177                                         paddrp->spp_ipv6_flowlabel = ((struct in6pcb *)inp)->in6p_flowinfo;
 2178                                         paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
 2179                                 }
 2180 #endif
 2181                                 /* can't return this */
 2182                                 paddrp->spp_pathmtu = 0;
 2183 
 2184                                 /* default behavior, no stcb */
 2185                                 paddrp->spp_flags = SPP_PMTUD_ENABLE;
 2186 
 2187                                 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
 2188                                         paddrp->spp_flags |= SPP_HB_ENABLE;
 2189                                 } else {
 2190                                         paddrp->spp_flags |= SPP_HB_DISABLE;
 2191                                 }
 2192                                 SCTP_INP_RUNLOCK(inp);
 2193                         }
 2194                         *optsize = sizeof(struct sctp_paddrparams);
 2195                 }
 2196                 break;
 2197         case SCTP_GET_PEER_ADDR_INFO:
 2198                 {
 2199                         struct sctp_paddrinfo *paddri;
 2200                         struct sctp_nets *net;
 2201 
 2202                         SCTP_CHECK_AND_CAST(paddri, optval, struct sctp_paddrinfo, *optsize);
 2203                         SCTP_FIND_STCB(inp, stcb, paddri->spinfo_assoc_id);
 2204 
 2205                         net = NULL;
 2206                         if (stcb) {
 2207                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddri->spinfo_address);
 2208                         } else {
 2209                                 /*
 2210                                  * We increment here since
 2211                                  * sctp_findassociation_ep_addr() wil do a
 2212                                  * decrement if it finds the stcb as long as
 2213                                  * the locked tcb (last argument) is NOT a
 2214                                  * TCB.. aka NULL.
 2215                                  */
 2216                                 SCTP_INP_INCR_REF(inp);
 2217                                 stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddri->spinfo_address, &net, NULL, NULL);
 2218                                 if (stcb == NULL) {
 2219                                         SCTP_INP_DECR_REF(inp);
 2220                                 }
 2221                         }
 2222 
 2223                         if ((stcb) && (net)) {
 2224                                 paddri->spinfo_state = net->dest_state & (SCTP_REACHABLE_MASK | SCTP_ADDR_NOHB);
 2225                                 paddri->spinfo_cwnd = net->cwnd;
 2226                                 paddri->spinfo_srtt = ((net->lastsa >> 2) + net->lastsv) >> 1;
 2227                                 paddri->spinfo_rto = net->RTO;
 2228                                 paddri->spinfo_assoc_id = sctp_get_associd(stcb);
 2229                                 SCTP_TCB_UNLOCK(stcb);
 2230                         } else {
 2231                                 if (stcb) {
 2232                                         SCTP_TCB_UNLOCK(stcb);
 2233                                 }
 2234                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
 2235                                 error = ENOENT;
 2236                         }
 2237                         *optsize = sizeof(struct sctp_paddrinfo);
 2238                 }
 2239                 break;
 2240         case SCTP_PCB_STATUS:
 2241                 {
 2242                         struct sctp_pcbinfo *spcb;
 2243 
 2244                         SCTP_CHECK_AND_CAST(spcb, optval, struct sctp_pcbinfo, *optsize);
 2245                         sctp_fill_pcbinfo(spcb);
 2246                         *optsize = sizeof(struct sctp_pcbinfo);
 2247                 }
 2248                 break;
 2249 
 2250         case SCTP_STATUS:
 2251                 {
 2252                         struct sctp_nets *net;
 2253                         struct sctp_status *sstat;
 2254 
 2255                         SCTP_CHECK_AND_CAST(sstat, optval, struct sctp_status, *optsize);
 2256                         SCTP_FIND_STCB(inp, stcb, sstat->sstat_assoc_id);
 2257 
 2258                         if (stcb == NULL) {
 2259                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 2260                                 error = EINVAL;
 2261                                 break;
 2262                         }
 2263                         /*
 2264                          * I think passing the state is fine since
 2265                          * sctp_constants.h will be available to the user
 2266                          * land.
 2267                          */
 2268                         sstat->sstat_state = stcb->asoc.state;
 2269                         sstat->sstat_assoc_id = sctp_get_associd(stcb);
 2270                         sstat->sstat_rwnd = stcb->asoc.peers_rwnd;
 2271                         sstat->sstat_unackdata = stcb->asoc.sent_queue_cnt;
 2272                         /*
 2273                          * We can't include chunks that have been passed to
 2274                          * the socket layer. Only things in queue.
 2275                          */
 2276                         sstat->sstat_penddata = (stcb->asoc.cnt_on_reasm_queue +
 2277                             stcb->asoc.cnt_on_all_streams);
 2278 
 2279 
 2280                         sstat->sstat_instrms = stcb->asoc.streamincnt;
 2281                         sstat->sstat_outstrms = stcb->asoc.streamoutcnt;
 2282                         sstat->sstat_fragmentation_point = sctp_get_frag_point(stcb, &stcb->asoc);
 2283                         memcpy(&sstat->sstat_primary.spinfo_address,
 2284                             &stcb->asoc.primary_destination->ro._l_addr,
 2285                             ((struct sockaddr *)(&stcb->asoc.primary_destination->ro._l_addr))->sa_len);
 2286                         net = stcb->asoc.primary_destination;
 2287                         ((struct sockaddr_in *)&sstat->sstat_primary.spinfo_address)->sin_port = stcb->rport;
 2288                         /*
 2289                          * Again the user can get info from sctp_constants.h
 2290                          * for what the state of the network is.
 2291                          */
 2292                         sstat->sstat_primary.spinfo_state = net->dest_state & SCTP_REACHABLE_MASK;
 2293                         sstat->sstat_primary.spinfo_cwnd = net->cwnd;
 2294                         sstat->sstat_primary.spinfo_srtt = net->lastsa;
 2295                         sstat->sstat_primary.spinfo_rto = net->RTO;
 2296                         sstat->sstat_primary.spinfo_mtu = net->mtu;
 2297                         sstat->sstat_primary.spinfo_assoc_id = sctp_get_associd(stcb);
 2298                         SCTP_TCB_UNLOCK(stcb);
 2299                         *optsize = sizeof(*sstat);
 2300                 }
 2301                 break;
 2302         case SCTP_RTOINFO:
 2303                 {
 2304                         struct sctp_rtoinfo *srto;
 2305 
 2306                         SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, *optsize);
 2307                         SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id);
 2308 
 2309                         if (stcb) {
 2310                                 srto->srto_initial = stcb->asoc.initial_rto;
 2311                                 srto->srto_max = stcb->asoc.maxrto;
 2312                                 srto->srto_min = stcb->asoc.minrto;
 2313                                 SCTP_TCB_UNLOCK(stcb);
 2314                         } else {
 2315                                 SCTP_INP_RLOCK(inp);
 2316                                 srto->srto_initial = inp->sctp_ep.initial_rto;
 2317                                 srto->srto_max = inp->sctp_ep.sctp_maxrto;
 2318                                 srto->srto_min = inp->sctp_ep.sctp_minrto;
 2319                                 SCTP_INP_RUNLOCK(inp);
 2320                         }
 2321                         *optsize = sizeof(*srto);
 2322                 }
 2323                 break;
 2324         case SCTP_ASSOCINFO:
 2325                 {
 2326                         struct sctp_assocparams *sasoc;
 2327                         uint32_t oldval;
 2328 
 2329                         SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, *optsize);
 2330                         SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id);
 2331 
 2332                         if (stcb) {
 2333                                 oldval = sasoc->sasoc_cookie_life;
 2334                                 sasoc->sasoc_cookie_life = TICKS_TO_MSEC(stcb->asoc.cookie_life);
 2335                                 sasoc->sasoc_asocmaxrxt = stcb->asoc.max_send_times;
 2336                                 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets;
 2337                                 sasoc->sasoc_peer_rwnd = stcb->asoc.peers_rwnd;
 2338                                 sasoc->sasoc_local_rwnd = stcb->asoc.my_rwnd;
 2339                                 SCTP_TCB_UNLOCK(stcb);
 2340                         } else {
 2341                                 SCTP_INP_RLOCK(inp);
 2342                                 sasoc->sasoc_cookie_life = TICKS_TO_MSEC(inp->sctp_ep.def_cookie_life);
 2343                                 sasoc->sasoc_asocmaxrxt = inp->sctp_ep.max_send_times;
 2344                                 sasoc->sasoc_number_peer_destinations = 0;
 2345                                 sasoc->sasoc_peer_rwnd = 0;
 2346                                 sasoc->sasoc_local_rwnd = sbspace(&inp->sctp_socket->so_rcv);
 2347                                 SCTP_INP_RUNLOCK(inp);
 2348                         }
 2349                         *optsize = sizeof(*sasoc);
 2350                 }
 2351                 break;
 2352         case SCTP_DEFAULT_SEND_PARAM:
 2353                 {
 2354                         struct sctp_sndrcvinfo *s_info;
 2355 
 2356                         SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, *optsize);
 2357                         SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id);
 2358 
 2359                         if (stcb) {
 2360                                 memcpy(s_info, &stcb->asoc.def_send, sizeof(stcb->asoc.def_send));
 2361                                 SCTP_TCB_UNLOCK(stcb);
 2362                         } else {
 2363                                 SCTP_INP_RLOCK(inp);
 2364                                 memcpy(s_info, &inp->def_send, sizeof(inp->def_send));
 2365                                 SCTP_INP_RUNLOCK(inp);
 2366                         }
 2367                         *optsize = sizeof(*s_info);
 2368                 }
 2369                 break;
 2370         case SCTP_INITMSG:
 2371                 {
 2372                         struct sctp_initmsg *sinit;
 2373 
 2374                         SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, *optsize);
 2375                         SCTP_INP_RLOCK(inp);
 2376                         sinit->sinit_num_ostreams = inp->sctp_ep.pre_open_stream_count;
 2377                         sinit->sinit_max_instreams = inp->sctp_ep.max_open_streams_intome;
 2378                         sinit->sinit_max_attempts = inp->sctp_ep.max_init_times;
 2379                         sinit->sinit_max_init_timeo = inp->sctp_ep.initial_init_rto_max;
 2380                         SCTP_INP_RUNLOCK(inp);
 2381                         *optsize = sizeof(*sinit);
 2382                 }
 2383                 break;
 2384         case SCTP_PRIMARY_ADDR:
 2385                 /* we allow a "get" operation on this */
 2386                 {
 2387                         struct sctp_setprim *ssp;
 2388 
 2389                         SCTP_CHECK_AND_CAST(ssp, optval, struct sctp_setprim, *optsize);
 2390                         SCTP_FIND_STCB(inp, stcb, ssp->ssp_assoc_id);
 2391 
 2392                         if (stcb) {
 2393                                 /* simply copy out the sockaddr_storage... */
 2394                                 int len;
 2395 
 2396                                 len = *optsize;
 2397                                 if (len > stcb->asoc.primary_destination->ro._l_addr.sa.sa_len)
 2398                                         len = stcb->asoc.primary_destination->ro._l_addr.sa.sa_len;
 2399 
 2400                                 memcpy(&ssp->ssp_addr,
 2401                                     &stcb->asoc.primary_destination->ro._l_addr,
 2402                                     len);
 2403                                 SCTP_TCB_UNLOCK(stcb);
 2404                         } else {
 2405                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 2406                                 error = EINVAL;
 2407                         }
 2408                         *optsize = sizeof(*ssp);
 2409                 }
 2410                 break;
 2411 
 2412         case SCTP_HMAC_IDENT:
 2413                 {
 2414                         struct sctp_hmacalgo *shmac;
 2415                         sctp_hmaclist_t *hmaclist;
 2416                         uint32_t size;
 2417                         int i;
 2418 
 2419                         SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, *optsize);
 2420 
 2421                         SCTP_INP_RLOCK(inp);
 2422                         hmaclist = inp->sctp_ep.local_hmacs;
 2423                         if (hmaclist == NULL) {
 2424                                 /* no HMACs to return */
 2425                                 *optsize = sizeof(*shmac);
 2426                                 SCTP_INP_RUNLOCK(inp);
 2427                                 break;
 2428                         }
 2429                         /* is there room for all of the hmac ids? */
 2430                         size = sizeof(*shmac) + (hmaclist->num_algo *
 2431                             sizeof(shmac->shmac_idents[0]));
 2432                         if ((size_t)(*optsize) < size) {
 2433                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 2434                                 error = EINVAL;
 2435                                 SCTP_INP_RUNLOCK(inp);
 2436                                 break;
 2437                         }
 2438                         /* copy in the list */
 2439                         for (i = 0; i < hmaclist->num_algo; i++)
 2440                                 shmac->shmac_idents[i] = hmaclist->hmac[i];
 2441                         SCTP_INP_RUNLOCK(inp);
 2442                         *optsize = size;
 2443                         break;
 2444                 }
 2445         case SCTP_AUTH_ACTIVE_KEY:
 2446                 {
 2447                         struct sctp_authkeyid *scact;
 2448 
 2449                         SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, *optsize);
 2450                         SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id);
 2451 
 2452                         if (stcb) {
 2453                                 /* get the active key on the assoc */
 2454                                 scact->scact_keynumber = stcb->asoc.authinfo.assoc_keyid;
 2455                                 SCTP_TCB_UNLOCK(stcb);
 2456                         } else {
 2457                                 /* get the endpoint active key */
 2458                                 SCTP_INP_RLOCK(inp);
 2459                                 scact->scact_keynumber = inp->sctp_ep.default_keyid;
 2460                                 SCTP_INP_RUNLOCK(inp);
 2461                         }
 2462                         *optsize = sizeof(*scact);
 2463                         break;
 2464                 }
 2465         case SCTP_LOCAL_AUTH_CHUNKS:
 2466                 {
 2467                         struct sctp_authchunks *sac;
 2468                         sctp_auth_chklist_t *chklist = NULL;
 2469                         size_t size = 0;
 2470 
 2471                         SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize);
 2472                         SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id);
 2473 
 2474                         if (stcb) {
 2475                                 /* get off the assoc */
 2476                                 chklist = stcb->asoc.local_auth_chunks;
 2477                                 /* is there enough space? */
 2478                                 size = sctp_auth_get_chklist_size(chklist);
 2479                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
 2480                                         error = EINVAL;
 2481                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 2482                                 } else {
 2483                                         /* copy in the chunks */
 2484                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
 2485                                 }
 2486                                 SCTP_TCB_UNLOCK(stcb);
 2487                         } else {
 2488                                 /* get off the endpoint */
 2489                                 SCTP_INP_RLOCK(inp);
 2490                                 chklist = inp->sctp_ep.local_auth_chunks;
 2491                                 /* is there enough space? */
 2492                                 size = sctp_auth_get_chklist_size(chklist);
 2493                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
 2494                                         error = EINVAL;
 2495                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 2496                                 } else {
 2497                                         /* copy in the chunks */
 2498                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
 2499                                 }
 2500                                 SCTP_INP_RUNLOCK(inp);
 2501                         }
 2502                         *optsize = sizeof(struct sctp_authchunks) + size;
 2503                         break;
 2504                 }
 2505         case SCTP_PEER_AUTH_CHUNKS:
 2506                 {
 2507                         struct sctp_authchunks *sac;
 2508                         sctp_auth_chklist_t *chklist = NULL;
 2509                         size_t size = 0;
 2510 
 2511                         SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize);
 2512                         SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id);
 2513 
 2514                         if (stcb) {
 2515                                 /* get off the assoc */
 2516                                 chklist = stcb->asoc.peer_auth_chunks;
 2517                                 /* is there enough space? */
 2518                                 size = sctp_auth_get_chklist_size(chklist);
 2519                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
 2520                                         error = EINVAL;
 2521                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 2522                                 } else {
 2523                                         /* copy in the chunks */
 2524                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
 2525                                 }
 2526                                 SCTP_TCB_UNLOCK(stcb);
 2527                         } else {
 2528                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
 2529                                 error = ENOENT;
 2530                         }
 2531                         *optsize = sizeof(struct sctp_authchunks) + size;
 2532                         break;
 2533                 }
 2534 
 2535 
 2536         default:
 2537                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
 2538                 error = ENOPROTOOPT;
 2539                 *optsize = 0;
 2540                 break;
 2541         }                       /* end switch (sopt->sopt_name) */
 2542         return (error);
 2543 }
 2544 
 2545 static int
 2546 sctp_setopt(struct socket *so, int optname, void *optval, size_t optsize,
 2547     void *p)
 2548 {
 2549         int error, set_opt;
 2550         uint32_t *mopt;
 2551         struct sctp_tcb *stcb = NULL;
 2552         struct sctp_inpcb *inp = NULL;
 2553         uint32_t vrf_id;
 2554 
 2555         if (optval == NULL) {
 2556                 SCTP_PRINTF("optval is NULL\n");
 2557                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 2558                 return (EINVAL);
 2559         }
 2560         inp = (struct sctp_inpcb *)so->so_pcb;
 2561         if (inp == 0) {
 2562                 SCTP_PRINTF("inp is NULL?\n");
 2563                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 2564                 return EINVAL;
 2565         }
 2566         vrf_id = inp->def_vrf_id;
 2567 
 2568         error = 0;
 2569         switch (optname) {
 2570         case SCTP_NODELAY:
 2571         case SCTP_AUTOCLOSE:
 2572         case SCTP_AUTO_ASCONF:
 2573         case SCTP_EXPLICIT_EOR:
 2574         case SCTP_DISABLE_FRAGMENTS:
 2575         case SCTP_USE_EXT_RCVINFO:
 2576         case SCTP_I_WANT_MAPPED_V4_ADDR:
 2577                 /* copy in the option value */
 2578                 SCTP_CHECK_AND_CAST(mopt, optval, uint32_t, optsize);
 2579                 set_opt = 0;
 2580                 if (error)
 2581                         break;
 2582                 switch (optname) {
 2583                 case SCTP_DISABLE_FRAGMENTS:
 2584                         set_opt = SCTP_PCB_FLAGS_NO_FRAGMENT;
 2585                         break;
 2586                 case SCTP_AUTO_ASCONF:
 2587                         /*
 2588                          * NOTE: we don't really support this flag
 2589                          */
 2590                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
 2591                                 /* only valid for bound all sockets */
 2592                                 set_opt = SCTP_PCB_FLAGS_AUTO_ASCONF;
 2593                         } else {
 2594                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 2595                                 return (EINVAL);
 2596                         }
 2597                         break;
 2598                 case SCTP_EXPLICIT_EOR:
 2599                         set_opt = SCTP_PCB_FLAGS_EXPLICIT_EOR;
 2600                         break;
 2601                 case SCTP_USE_EXT_RCVINFO:
 2602                         set_opt = SCTP_PCB_FLAGS_EXT_RCVINFO;
 2603                         break;
 2604                 case SCTP_I_WANT_MAPPED_V4_ADDR:
 2605                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
 2606                                 set_opt = SCTP_PCB_FLAGS_NEEDS_MAPPED_V4;
 2607                         } else {
 2608                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 2609                                 return (EINVAL);
 2610                         }
 2611                         break;
 2612                 case SCTP_NODELAY:
 2613                         set_opt = SCTP_PCB_FLAGS_NODELAY;
 2614                         break;
 2615                 case SCTP_AUTOCLOSE:
 2616                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
 2617                             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
 2618                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 2619                                 return (EINVAL);
 2620                         }
 2621                         set_opt = SCTP_PCB_FLAGS_AUTOCLOSE;
 2622                         /*
 2623                          * The value is in ticks. Note this does not effect
 2624                          * old associations, only new ones.
 2625                          */
 2626                         inp->sctp_ep.auto_close_time = SEC_TO_TICKS(*mopt);
 2627                         break;
 2628                 }
 2629                 SCTP_INP_WLOCK(inp);
 2630                 if (*mopt != 0) {
 2631                         sctp_feature_on(inp, set_opt);
 2632                 } else {
 2633                         sctp_feature_off(inp, set_opt);
 2634                 }
 2635                 SCTP_INP_WUNLOCK(inp);
 2636                 break;
 2637         case SCTP_PARTIAL_DELIVERY_POINT:
 2638                 {
 2639                         uint32_t *value;
 2640 
 2641                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, optsize);
 2642                         if (*value > SCTP_SB_LIMIT_RCV(so)) {
 2643                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 2644                                 error = EINVAL;
 2645                                 break;
 2646                         }
 2647                         inp->partial_delivery_point = *value;
 2648                 }
 2649                 break;
 2650         case SCTP_FRAGMENT_INTERLEAVE:
 2651                 /* not yet until we re-write sctp_recvmsg() */
 2652                 {
 2653                         uint32_t *level;
 2654 
 2655                         SCTP_CHECK_AND_CAST(level, optval, uint32_t, optsize);
 2656                         if (*level == SCTP_FRAG_LEVEL_2) {
 2657                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
 2658                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
 2659                         } else if (*level == SCTP_FRAG_LEVEL_1) {
 2660                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
 2661                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
 2662                         } else if (*level == SCTP_FRAG_LEVEL_0) {
 2663                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
 2664                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
 2665 
 2666                         } else {
 2667                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 2668                                 error = EINVAL;
 2669                         }
 2670                 }
 2671                 break;
 2672         case SCTP_CMT_ON_OFF:
 2673                 {
 2674                         struct sctp_assoc_value *av;
 2675 
 2676                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
 2677                         if (sctp_cmt_on_off) {
 2678                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
 2679                                 if (stcb) {
 2680                                         stcb->asoc.sctp_cmt_on_off = (uint8_t) av->assoc_value;
 2681                                         SCTP_TCB_UNLOCK(stcb);
 2682                                 } else {
 2683                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
 2684                                         error = ENOTCONN;
 2685                                 }
 2686                         } else {
 2687                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
 2688                                 error = ENOPROTOOPT;
 2689                         }
 2690                 }
 2691                 break;
 2692                 /* JRS - Set socket option for pluggable congestion control */
 2693         case SCTP_PLUGGABLE_CC:
 2694                 {
 2695                         struct sctp_assoc_value *av;
 2696 
 2697                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
 2698                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
 2699                         if (stcb) {
 2700                                 switch (av->assoc_value) {
 2701                                         /*
 2702                                          * JRS - Standard TCP congestion
 2703                                          * control
 2704                                          */
 2705                                 case SCTP_CC_RFC2581:
 2706                                         {
 2707                                                 stcb->asoc.congestion_control_module = SCTP_CC_RFC2581;
 2708                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_set_initial_cc_param;
 2709                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_cwnd_update_after_sack;
 2710                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_cwnd_update_after_fr;
 2711                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_cwnd_update_after_timeout;
 2712                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_cwnd_update_after_ecn_echo;
 2713                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
 2714                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
 2715                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_cwnd_update_after_fr_timer;
 2716                                                 SCTP_TCB_UNLOCK(stcb);
 2717                                                 break;
 2718                                         }
 2719                                         /*
 2720                                          * JRS - High Speed TCP congestion
 2721                                          * control (Floyd)
 2722                                          */
 2723                                 case SCTP_CC_HSTCP:
 2724                                         {
 2725                                                 stcb->asoc.congestion_control_module = SCTP_CC_HSTCP;
 2726                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_set_initial_cc_param;
 2727                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_hs_cwnd_update_after_sack;
 2728                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_hs_cwnd_update_after_fr;
 2729                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_cwnd_update_after_timeout;
 2730                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_cwnd_update_after_ecn_echo;
 2731                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
 2732                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
 2733                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_cwnd_update_after_fr_timer;
 2734                                                 SCTP_TCB_UNLOCK(stcb);
 2735                                                 break;
 2736                                         }
 2737                                         /* JRS - HTCP congestion control */
 2738                                 case SCTP_CC_HTCP:
 2739                                         {
 2740                                                 stcb->asoc.congestion_control_module = SCTP_CC_HTCP;
 2741                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_htcp_set_initial_cc_param;
 2742                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_htcp_cwnd_update_after_sack;
 2743                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_htcp_cwnd_update_after_fr;
 2744                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_htcp_cwnd_update_after_timeout;
 2745                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_htcp_cwnd_update_after_ecn_echo;
 2746                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
 2747                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
 2748                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_htcp_cwnd_update_after_fr_timer;
 2749                                                 SCTP_TCB_UNLOCK(stcb);
 2750                                                 break;
 2751                                         }
 2752                                         /*
 2753                                          * JRS - All other values are
 2754                                          * invalid
 2755                                          */
 2756                                 default:
 2757                                         {
 2758                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 2759                                                 error = EINVAL;
 2760                                                 SCTP_TCB_UNLOCK(stcb);
 2761                                                 break;
 2762                                         }
 2763                                 }
 2764                         } else {
 2765                                 switch (av->assoc_value) {
 2766                                 case SCTP_CC_RFC2581:
 2767                                 case SCTP_CC_HSTCP:
 2768                                 case SCTP_CC_HTCP:
 2769                                         inp->sctp_ep.sctp_default_cc_module = av->assoc_value;
 2770                                         break;
 2771                                 default:
 2772                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 2773                                         error = EINVAL;
 2774                                         break;
 2775                                 };
 2776                         }
 2777                 }
 2778                 break;
 2779         case SCTP_CLR_STAT_LOG:
 2780                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
 2781                 error = EOPNOTSUPP;
 2782                 break;
 2783         case SCTP_CONTEXT:
 2784                 {
 2785                         struct sctp_assoc_value *av;
 2786 
 2787                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
 2788                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
 2789 
 2790                         if (stcb) {
 2791                                 stcb->asoc.context = av->assoc_value;
 2792                                 SCTP_TCB_UNLOCK(stcb);
 2793                         } else {
 2794                                 SCTP_INP_WLOCK(inp);
 2795                                 inp->sctp_context = av->assoc_value;
 2796                                 SCTP_INP_WUNLOCK(inp);
 2797                         }
 2798                 }
 2799                 break;
 2800         case SCTP_VRF_ID:
 2801                 {
 2802                         uint32_t *default_vrfid;
 2803 
 2804                         SCTP_CHECK_AND_CAST(default_vrfid, optval, uint32_t, optsize);
 2805                         if (*default_vrfid > SCTP_MAX_VRF_ID) {
 2806                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 2807                                 error = EINVAL;
 2808                                 break;
 2809                         }
 2810                         inp->def_vrf_id = *default_vrfid;
 2811                         break;
 2812                 }
 2813         case SCTP_DEL_VRF_ID:
 2814                 {
 2815                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
 2816                         error = EOPNOTSUPP;
 2817                         break;
 2818                 }
 2819         case SCTP_ADD_VRF_ID:
 2820                 {
 2821                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
 2822                         error = EOPNOTSUPP;
 2823                         break;
 2824                 }
 2825         case SCTP_DELAYED_SACK:
 2826                 {
 2827                         struct sctp_sack_info *sack;
 2828 
 2829                         SCTP_CHECK_AND_CAST(sack, optval, struct sctp_sack_info, optsize);
 2830                         SCTP_FIND_STCB(inp, stcb, sack->sack_assoc_id);
 2831                         if (sack->sack_delay) {
 2832                                 if (sack->sack_delay > SCTP_MAX_SACK_DELAY)
 2833                                         sack->sack_delay = SCTP_MAX_SACK_DELAY;
 2834                         }
 2835                         if (stcb) {
 2836                                 if (sack->sack_delay) {
 2837                                         if (MSEC_TO_TICKS(sack->sack_delay) < 1) {
 2838                                                 sack->sack_delay = TICKS_TO_MSEC(1);
 2839                                         }
 2840                                         stcb->asoc.delayed_ack = sack->sack_delay;
 2841                                 }
 2842                                 if (sack->sack_freq) {
 2843                                         stcb->asoc.sack_freq = sack->sack_freq;
 2844                                 }
 2845                                 SCTP_TCB_UNLOCK(stcb);
 2846                         } else {
 2847                                 SCTP_INP_WLOCK(inp);
 2848                                 if (sack->sack_delay) {
 2849                                         if (MSEC_TO_TICKS(sack->sack_delay) < 1) {
 2850                                                 sack->sack_delay = TICKS_TO_MSEC(1);
 2851                                         }
 2852                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(sack->sack_delay);
 2853                                 }
 2854                                 if (sack->sack_freq) {
 2855                                         inp->sctp_ep.sctp_sack_freq = sack->sack_freq;
 2856                                 }
 2857                                 SCTP_INP_WUNLOCK(inp);
 2858                         }
 2859                         break;
 2860                 }
 2861         case SCTP_AUTH_CHUNK:
 2862                 {
 2863                         struct sctp_authchunk *sauth;
 2864 
 2865                         SCTP_CHECK_AND_CAST(sauth, optval, struct sctp_authchunk, optsize);
 2866 
 2867                         SCTP_INP_WLOCK(inp);
 2868                         if (sctp_auth_add_chunk(sauth->sauth_chunk, inp->sctp_ep.local_auth_chunks)) {
 2869                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 2870                                 error = EINVAL;
 2871                         }
 2872                         SCTP_INP_WUNLOCK(inp);
 2873                         break;
 2874                 }
 2875         case SCTP_AUTH_KEY:
 2876                 {
 2877                         struct sctp_authkey *sca;
 2878                         struct sctp_keyhead *shared_keys;
 2879                         sctp_sharedkey_t *shared_key;
 2880                         sctp_key_t *key = NULL;
 2881                         size_t size;
 2882 
 2883                         SCTP_CHECK_AND_CAST(sca, optval, struct sctp_authkey, optsize);
 2884                         SCTP_FIND_STCB(inp, stcb, sca->sca_assoc_id);
 2885                         size = optsize - sizeof(*sca);
 2886 
 2887                         if (stcb) {
 2888                                 /* set it on the assoc */
 2889                                 shared_keys = &stcb->asoc.shared_keys;
 2890                                 /* clear the cached keys for this key id */
 2891                                 sctp_clear_cachedkeys(stcb, sca->sca_keynumber);
 2892                                 /*
 2893                                  * create the new shared key and
 2894                                  * insert/replace it
 2895                                  */
 2896                                 if (size > 0) {
 2897                                         key = sctp_set_key(sca->sca_key, (uint32_t) size);
 2898                                         if (key == NULL) {
 2899                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
 2900                                                 error = ENOMEM;
 2901                                                 SCTP_TCB_UNLOCK(stcb);
 2902                                                 break;
 2903                                         }
 2904                                 }
 2905                                 shared_key = sctp_alloc_sharedkey();
 2906                                 if (shared_key == NULL) {
 2907                                         sctp_free_key(key);
 2908                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
 2909                                         error = ENOMEM;
 2910                                         SCTP_TCB_UNLOCK(stcb);
 2911                                         break;
 2912                                 }
 2913                                 shared_key->key = key;
 2914                                 shared_key->keyid = sca->sca_keynumber;
 2915                                 sctp_insert_sharedkey(shared_keys, shared_key);
 2916                                 SCTP_TCB_UNLOCK(stcb);
 2917                         } else {
 2918                                 /* set it on the endpoint */
 2919                                 SCTP_INP_WLOCK(inp);
 2920                                 shared_keys = &inp->sctp_ep.shared_keys;
 2921                                 /*
 2922                                  * clear the cached keys on all assocs for
 2923                                  * this key id
 2924                                  */
 2925                                 sctp_clear_cachedkeys_ep(inp, sca->sca_keynumber);
 2926                                 /*
 2927                                  * create the new shared key and
 2928                                  * insert/replace it
 2929                                  */
 2930                                 if (size > 0) {
 2931                                         key = sctp_set_key(sca->sca_key, (uint32_t) size);
 2932                                         if (key == NULL) {
 2933                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
 2934                                                 error = ENOMEM;
 2935                                                 SCTP_INP_WUNLOCK(inp);
 2936                                                 break;
 2937                                         }
 2938                                 }
 2939                                 shared_key = sctp_alloc_sharedkey();
 2940                                 if (shared_key == NULL) {
 2941                                         sctp_free_key(key);
 2942                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
 2943                                         error = ENOMEM;
 2944                                         SCTP_INP_WUNLOCK(inp);
 2945                                         break;
 2946                                 }
 2947                                 shared_key->key = key;
 2948                                 shared_key->keyid = sca->sca_keynumber;
 2949                                 sctp_insert_sharedkey(shared_keys, shared_key);
 2950                                 SCTP_INP_WUNLOCK(inp);
 2951                         }
 2952                         break;
 2953                 }
 2954         case SCTP_HMAC_IDENT:
 2955                 {
 2956                         struct sctp_hmacalgo *shmac;
 2957                         sctp_hmaclist_t *hmaclist;
 2958                         uint32_t hmacid;
 2959                         size_t size, i, found;
 2960 
 2961                         SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, optsize);
 2962                         size = (optsize - sizeof(*shmac)) / sizeof(shmac->shmac_idents[0]);
 2963                         hmaclist = sctp_alloc_hmaclist(size);
 2964                         if (hmaclist == NULL) {
 2965                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
 2966                                 error = ENOMEM;
 2967                                 break;
 2968                         }
 2969                         for (i = 0; i < size; i++) {
 2970                                 hmacid = shmac->shmac_idents[i];
 2971                                 if (sctp_auth_add_hmacid(hmaclist, (uint16_t) hmacid)) {
 2972                                          /* invalid HMACs were found */ ;
 2973                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 2974                                         error = EINVAL;
 2975                                         sctp_free_hmaclist(hmaclist);
 2976                                         goto sctp_set_hmac_done;
 2977                                 }
 2978                         }
 2979                         found = 0;
 2980                         for (i = 0; i < hmaclist->num_algo; i++) {
 2981                                 if (hmaclist->hmac[i] == SCTP_AUTH_HMAC_ID_SHA1) {
 2982                                         /* already in list */
 2983                                         found = 1;
 2984                                 }
 2985                         }
 2986                         if (!found) {
 2987                                 sctp_free_hmaclist(hmaclist);
 2988                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 2989                                 error = EINVAL;
 2990                                 break;
 2991                         }
 2992                         /* set it on the endpoint */
 2993                         SCTP_INP_WLOCK(inp);
 2994                         if (inp->sctp_ep.local_hmacs)
 2995                                 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
 2996                         inp->sctp_ep.local_hmacs = hmaclist;
 2997                         SCTP_INP_WUNLOCK(inp);
 2998         sctp_set_hmac_done:
 2999                         break;
 3000                 }
 3001         case SCTP_AUTH_ACTIVE_KEY:
 3002                 {
 3003                         struct sctp_authkeyid *scact;
 3004 
 3005                         SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, optsize);
 3006                         SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id);
 3007 
 3008                         /* set the active key on the right place */
 3009                         if (stcb) {
 3010                                 /* set the active key on the assoc */
 3011                                 if (sctp_auth_setactivekey(stcb, scact->scact_keynumber)) {
 3012                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3013                                         error = EINVAL;
 3014                                 }
 3015                                 SCTP_TCB_UNLOCK(stcb);
 3016                         } else {
 3017                                 /* set the active key on the endpoint */
 3018                                 SCTP_INP_WLOCK(inp);
 3019                                 if (sctp_auth_setactivekey_ep(inp, scact->scact_keynumber)) {
 3020                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3021                                         error = EINVAL;
 3022                                 }
 3023                                 SCTP_INP_WUNLOCK(inp);
 3024                         }
 3025                         break;
 3026                 }
 3027         case SCTP_AUTH_DELETE_KEY:
 3028                 {
 3029                         struct sctp_authkeyid *scdel;
 3030 
 3031                         SCTP_CHECK_AND_CAST(scdel, optval, struct sctp_authkeyid, optsize);
 3032                         SCTP_FIND_STCB(inp, stcb, scdel->scact_assoc_id);
 3033 
 3034                         /* delete the key from the right place */
 3035                         if (stcb) {
 3036                                 if (sctp_delete_sharedkey(stcb, scdel->scact_keynumber)) {
 3037                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3038                                         error = EINVAL;
 3039                                 }
 3040                                 SCTP_TCB_UNLOCK(stcb);
 3041                         } else {
 3042                                 SCTP_INP_WLOCK(inp);
 3043                                 if (sctp_delete_sharedkey_ep(inp, scdel->scact_keynumber)) {
 3044                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3045                                         error = EINVAL;
 3046                                 }
 3047                                 SCTP_INP_WUNLOCK(inp);
 3048                         }
 3049                         break;
 3050                 }
 3051 
 3052         case SCTP_RESET_STREAMS:
 3053                 {
 3054                         struct sctp_stream_reset *strrst;
 3055                         uint8_t send_in = 0, send_tsn = 0, send_out = 0;
 3056                         int i;
 3057 
 3058                         SCTP_CHECK_AND_CAST(strrst, optval, struct sctp_stream_reset, optsize);
 3059                         SCTP_FIND_STCB(inp, stcb, strrst->strrst_assoc_id);
 3060 
 3061                         if (stcb == NULL) {
 3062                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
 3063                                 error = ENOENT;
 3064                                 break;
 3065                         }
 3066                         if (stcb->asoc.peer_supports_strreset == 0) {
 3067                                 /*
 3068                                  * Peer does not support it, we return
 3069                                  * protocol not supported since this is true
 3070                                  * for this feature and this peer, not the
 3071                                  * socket request in general.
 3072                                  */
 3073                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EPROTONOSUPPORT);
 3074                                 error = EPROTONOSUPPORT;
 3075                                 SCTP_TCB_UNLOCK(stcb);
 3076                                 break;
 3077                         }
 3078                         if (stcb->asoc.stream_reset_outstanding) {
 3079                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
 3080                                 error = EALREADY;
 3081                                 SCTP_TCB_UNLOCK(stcb);
 3082                                 break;
 3083                         }
 3084                         if (strrst->strrst_flags == SCTP_RESET_LOCAL_RECV) {
 3085                                 send_in = 1;
 3086                         } else if (strrst->strrst_flags == SCTP_RESET_LOCAL_SEND) {
 3087                                 send_out = 1;
 3088                         } else if (strrst->strrst_flags == SCTP_RESET_BOTH) {
 3089                                 send_in = 1;
 3090                                 send_out = 1;
 3091                         } else if (strrst->strrst_flags == SCTP_RESET_TSN) {
 3092                                 send_tsn = 1;
 3093                         } else {
 3094                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3095                                 error = EINVAL;
 3096                                 SCTP_TCB_UNLOCK(stcb);
 3097                                 break;
 3098                         }
 3099                         for (i = 0; i < strrst->strrst_num_streams; i++) {
 3100                                 if ((send_in) &&
 3101 
 3102                                     (strrst->strrst_list[i] > stcb->asoc.streamincnt)) {
 3103                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3104                                         error = EINVAL;
 3105                                         goto get_out;
 3106                                 }
 3107                                 if ((send_out) &&
 3108                                     (strrst->strrst_list[i] > stcb->asoc.streamoutcnt)) {
 3109                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3110                                         error = EINVAL;
 3111                                         goto get_out;
 3112                                 }
 3113                         }
 3114                         if (error) {
 3115                 get_out:
 3116                                 SCTP_TCB_UNLOCK(stcb);
 3117                                 break;
 3118                         }
 3119                         error = sctp_send_str_reset_req(stcb, strrst->strrst_num_streams,
 3120                             strrst->strrst_list,
 3121                             send_out, (stcb->asoc.str_reset_seq_in - 3),
 3122                             send_in, send_tsn);
 3123 
 3124                         sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_REQ, SCTP_SO_LOCKED);
 3125                         SCTP_TCB_UNLOCK(stcb);
 3126                 }
 3127                 break;
 3128 
 3129         case SCTP_CONNECT_X:
 3130                 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) {
 3131                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3132                         error = EINVAL;
 3133                         break;
 3134                 }
 3135                 error = sctp_do_connect_x(so, inp, optval, optsize, p, 0);
 3136                 break;
 3137 
 3138         case SCTP_CONNECT_X_DELAYED:
 3139                 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) {
 3140                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3141                         error = EINVAL;
 3142                         break;
 3143                 }
 3144                 error = sctp_do_connect_x(so, inp, optval, optsize, p, 1);
 3145                 break;
 3146 
 3147         case SCTP_CONNECT_X_COMPLETE:
 3148                 {
 3149                         struct sockaddr *sa;
 3150                         struct sctp_nets *net;
 3151 
 3152                         /* FIXME MT: check correct? */
 3153                         SCTP_CHECK_AND_CAST(sa, optval, struct sockaddr, optsize);
 3154 
 3155                         /* find tcb */
 3156                         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
 3157                                 SCTP_INP_RLOCK(inp);
 3158                                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
 3159                                 if (stcb) {
 3160                                         SCTP_TCB_LOCK(stcb);
 3161                                         net = sctp_findnet(stcb, sa);
 3162                                 }
 3163                                 SCTP_INP_RUNLOCK(inp);
 3164                         } else {
 3165                                 /*
 3166                                  * We increment here since
 3167                                  * sctp_findassociation_ep_addr() wil do a
 3168                                  * decrement if it finds the stcb as long as
 3169                                  * the locked tcb (last argument) is NOT a
 3170                                  * TCB.. aka NULL.
 3171                                  */
 3172                                 SCTP_INP_INCR_REF(inp);
 3173                                 stcb = sctp_findassociation_ep_addr(&inp, sa, &net, NULL, NULL);
 3174                                 if (stcb == NULL) {
 3175                                         SCTP_INP_DECR_REF(inp);
 3176                                 }
 3177                         }
 3178 
 3179                         if (stcb == NULL) {
 3180                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
 3181                                 error = ENOENT;
 3182                                 break;
 3183                         }
 3184                         if (stcb->asoc.delayed_connection == 1) {
 3185                                 stcb->asoc.delayed_connection = 0;
 3186                                 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
 3187                                 sctp_timer_stop(SCTP_TIMER_TYPE_INIT, inp, stcb,
 3188                                     stcb->asoc.primary_destination,
 3189                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_9);
 3190                                 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
 3191                         } else {
 3192                                 /*
 3193                                  * already expired or did not use delayed
 3194                                  * connectx
 3195                                  */
 3196                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
 3197                                 error = EALREADY;
 3198                         }
 3199                         SCTP_TCB_UNLOCK(stcb);
 3200                 }
 3201                 break;
 3202         case SCTP_MAX_BURST:
 3203                 {
 3204                         uint8_t *burst;
 3205 
 3206                         SCTP_CHECK_AND_CAST(burst, optval, uint8_t, optsize);
 3207 
 3208                         SCTP_INP_WLOCK(inp);
 3209                         if (*burst) {
 3210                                 inp->sctp_ep.max_burst = *burst;
 3211                         }
 3212                         SCTP_INP_WUNLOCK(inp);
 3213                 }
 3214                 break;
 3215         case SCTP_MAXSEG:
 3216                 {
 3217                         struct sctp_assoc_value *av;
 3218                         int ovh;
 3219 
 3220                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
 3221                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
 3222 
 3223                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
 3224                                 ovh = SCTP_MED_OVERHEAD;
 3225                         } else {
 3226                                 ovh = SCTP_MED_V4_OVERHEAD;
 3227                         }
 3228                         if (stcb) {
 3229                                 if (av->assoc_value) {
 3230                                         stcb->asoc.sctp_frag_point = (av->assoc_value + ovh);
 3231                                 } else {
 3232                                         stcb->asoc.sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
 3233                                 }
 3234                                 SCTP_TCB_UNLOCK(stcb);
 3235                         } else {
 3236                                 SCTP_INP_WLOCK(inp);
 3237                                 /*
 3238                                  * FIXME MT: I think this is not in tune
 3239                                  * with the API ID
 3240                                  */
 3241                                 if (av->assoc_value) {
 3242                                         inp->sctp_frag_point = (av->assoc_value + ovh);
 3243                                 } else {
 3244                                         inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
 3245                                 }
 3246                                 SCTP_INP_WUNLOCK(inp);
 3247                         }
 3248                 }
 3249                 break;
 3250         case SCTP_EVENTS:
 3251                 {
 3252                         struct sctp_event_subscribe *events;
 3253 
 3254                         SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, optsize);
 3255 
 3256                         SCTP_INP_WLOCK(inp);
 3257                         if (events->sctp_data_io_event) {
 3258                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
 3259                         } else {
 3260                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
 3261                         }
 3262 
 3263                         if (events->sctp_association_event) {
 3264                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
 3265                         } else {
 3266                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
 3267                         }
 3268 
 3269                         if (events->sctp_address_event) {
 3270                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
 3271                         } else {
 3272                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
 3273                         }
 3274 
 3275                         if (events->sctp_send_failure_event) {
 3276                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
 3277                         } else {
 3278                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
 3279                         }
 3280 
 3281                         if (events->sctp_peer_error_event) {
 3282                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR);
 3283                         } else {
 3284                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPEERERR);
 3285                         }
 3286 
 3287                         if (events->sctp_shutdown_event) {
 3288                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
 3289                         } else {
 3290                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
 3291                         }
 3292 
 3293                         if (events->sctp_partial_delivery_event) {
 3294                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
 3295                         } else {
 3296                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
 3297                         }
 3298 
 3299                         if (events->sctp_adaptation_layer_event) {
 3300                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
 3301                         } else {
 3302                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
 3303                         }
 3304 
 3305                         if (events->sctp_authentication_event) {
 3306                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT);
 3307                         } else {
 3308                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTHEVNT);
 3309                         }
 3310 
 3311                         if (events->sctp_stream_reset_events) {
 3312                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
 3313                         } else {
 3314                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
 3315                         }
 3316                         SCTP_INP_WUNLOCK(inp);
 3317                 }
 3318                 break;
 3319 
 3320         case SCTP_ADAPTATION_LAYER:
 3321                 {
 3322                         struct sctp_setadaptation *adap_bits;
 3323 
 3324                         SCTP_CHECK_AND_CAST(adap_bits, optval, struct sctp_setadaptation, optsize);
 3325                         SCTP_INP_WLOCK(inp);
 3326                         inp->sctp_ep.adaptation_layer_indicator = adap_bits->ssb_adaptation_ind;
 3327                         SCTP_INP_WUNLOCK(inp);
 3328                 }
 3329                 break;
 3330 #ifdef SCTP_DEBUG
 3331         case SCTP_SET_INITIAL_DBG_SEQ:
 3332                 {
 3333                         uint32_t *vvv;
 3334 
 3335                         SCTP_CHECK_AND_CAST(vvv, optval, uint32_t, optsize);
 3336                         SCTP_INP_WLOCK(inp);
 3337                         inp->sctp_ep.initial_sequence_debug = *vvv;
 3338                         SCTP_INP_WUNLOCK(inp);
 3339                 }
 3340                 break;
 3341 #endif
 3342         case SCTP_DEFAULT_SEND_PARAM:
 3343                 {
 3344                         struct sctp_sndrcvinfo *s_info;
 3345 
 3346                         SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, optsize);
 3347                         SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id);
 3348 
 3349                         if (stcb) {
 3350                                 if (s_info->sinfo_stream <= stcb->asoc.streamoutcnt) {
 3351                                         memcpy(&stcb->asoc.def_send, s_info, min(optsize, sizeof(stcb->asoc.def_send)));
 3352                                 } else {
 3353                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3354                                         error = EINVAL;
 3355                                 }
 3356                                 SCTP_TCB_UNLOCK(stcb);
 3357                         } else {
 3358                                 SCTP_INP_WLOCK(inp);
 3359                                 memcpy(&inp->def_send, s_info, min(optsize, sizeof(inp->def_send)));
 3360                                 SCTP_INP_WUNLOCK(inp);
 3361                         }
 3362                 }
 3363                 break;
 3364         case SCTP_PEER_ADDR_PARAMS:
 3365                 /* Applys to the specific association */
 3366                 {
 3367                         struct sctp_paddrparams *paddrp;
 3368                         struct sctp_nets *net;
 3369 
 3370                         SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, optsize);
 3371                         SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id);
 3372                         net = NULL;
 3373                         if (stcb) {
 3374                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address);
 3375                         } else {
 3376                                 /*
 3377                                  * We increment here since
 3378                                  * sctp_findassociation_ep_addr() wil do a
 3379                                  * decrement if it finds the stcb as long as
 3380                                  * the locked tcb (last argument) is NOT a
 3381                                  * TCB.. aka NULL.
 3382                                  */
 3383                                 SCTP_INP_INCR_REF(inp);
 3384                                 stcb = sctp_findassociation_ep_addr(&inp,
 3385                                     (struct sockaddr *)&paddrp->spp_address,
 3386                                     &net, NULL, NULL);
 3387                                 if (stcb == NULL) {
 3388                                         SCTP_INP_DECR_REF(inp);
 3389                                 }
 3390                         }
 3391                         if (stcb && (net == NULL)) {
 3392                                 struct sockaddr *sa;
 3393 
 3394                                 sa = (struct sockaddr *)&paddrp->spp_address;
 3395                                 if (sa->sa_family == AF_INET) {
 3396                                         struct sockaddr_in *sin;
 3397 
 3398                                         sin = (struct sockaddr_in *)sa;
 3399                                         if (sin->sin_addr.s_addr) {
 3400                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3401                                                 SCTP_TCB_UNLOCK(stcb);
 3402                                                 error = EINVAL;
 3403                                                 break;
 3404                                         }
 3405                                 } else if (sa->sa_family == AF_INET6) {
 3406                                         struct sockaddr_in6 *sin6;
 3407 
 3408                                         sin6 = (struct sockaddr_in6 *)sa;
 3409                                         if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
 3410                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3411                                                 SCTP_TCB_UNLOCK(stcb);
 3412                                                 error = EINVAL;
 3413                                                 break;
 3414                                         }
 3415                                 } else {
 3416                                         error = EAFNOSUPPORT;
 3417                                         SCTP_TCB_UNLOCK(stcb);
 3418                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 3419                                         break;
 3420                                 }
 3421                         }
 3422                         /* sanity checks */
 3423                         if ((paddrp->spp_flags & SPP_HB_ENABLE) && (paddrp->spp_flags & SPP_HB_DISABLE)) {
 3424                                 if (stcb)
 3425                                         SCTP_TCB_UNLOCK(stcb);
 3426                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3427                                 return (EINVAL);
 3428                         }
 3429                         if ((paddrp->spp_flags & SPP_PMTUD_ENABLE) && (paddrp->spp_flags & SPP_PMTUD_DISABLE)) {
 3430                                 if (stcb)
 3431                                         SCTP_TCB_UNLOCK(stcb);
 3432                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3433                                 return (EINVAL);
 3434                         }
 3435                         if (stcb) {
 3436                                 /************************TCB SPECIFIC SET ******************/
 3437                                 /*
 3438                                  * do we change the timer for HB, we run
 3439                                  * only one?
 3440                                  */
 3441                                 int ovh = 0;
 3442 
 3443                                 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
 3444                                         ovh = SCTP_MED_OVERHEAD;
 3445                                 } else {
 3446                                         ovh = SCTP_MED_V4_OVERHEAD;
 3447                                 }
 3448 
 3449                                 if (paddrp->spp_hbinterval)
 3450                                         stcb->asoc.heart_beat_delay = paddrp->spp_hbinterval;
 3451                                 else if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO)
 3452                                         stcb->asoc.heart_beat_delay = 0;
 3453 
 3454                                 /* network sets ? */
 3455                                 if (net) {
 3456                                         /************************NET SPECIFIC SET ******************/
 3457                                         if (paddrp->spp_flags & SPP_HB_DEMAND) {
 3458                                                 /* on demand HB */
 3459                                                 if (sctp_send_hb(stcb, 1, net) < 0) {
 3460                                                         /* asoc destroyed */
 3461                                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3462                                                         error = EINVAL;
 3463                                                         break;
 3464                                                 }
 3465                                         }
 3466                                         if (paddrp->spp_flags & SPP_HB_DISABLE) {
 3467                                                 net->dest_state |= SCTP_ADDR_NOHB;
 3468                                         }
 3469                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
 3470                                                 net->dest_state &= ~SCTP_ADDR_NOHB;
 3471                                         }
 3472                                         if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && (paddrp->spp_pathmtu >= SCTP_SMALLEST_PMTU)) {
 3473                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
 3474                                                         sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
 3475                                                             SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10);
 3476                                                 }
 3477                                                 if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) {
 3478                                                         net->mtu = paddrp->spp_pathmtu + ovh;
 3479                                                         if (net->mtu < stcb->asoc.smallest_mtu) {
 3480 #ifdef SCTP_PRINT_FOR_B_AND_M
 3481                                                                 SCTP_PRINTF("SCTP_PMTU_DISABLE calls sctp_pathmtu_adjustment:%d\n",
 3482                                                                     net->mtu);
 3483 #endif
 3484                                                                 sctp_pathmtu_adjustment(inp, stcb, net, net->mtu);
 3485                                                         }
 3486                                                 }
 3487                                         }
 3488                                         if (paddrp->spp_flags & SPP_PMTUD_ENABLE) {
 3489                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
 3490                                                         sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
 3491                                                 }
 3492                                         }
 3493                                         if (paddrp->spp_pathmaxrxt)
 3494                                                 net->failure_threshold = paddrp->spp_pathmaxrxt;
 3495 #ifdef INET
 3496                                         if (paddrp->spp_flags & SPP_IPV4_TOS) {
 3497                                                 if (net->ro._l_addr.sin.sin_family == AF_INET) {
 3498                                                         net->tos_flowlabel = paddrp->spp_ipv4_tos & 0x000000fc;
 3499                                                 }
 3500                                         }
 3501 #endif
 3502 #ifdef INET6
 3503                                         if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL) {
 3504                                                 if (net->ro._l_addr.sin6.sin6_family == AF_INET6) {
 3505                                                         net->tos_flowlabel = paddrp->spp_ipv6_flowlabel;
 3506                                                 }
 3507                                         }
 3508 #endif
 3509                                 } else {
 3510                                         /************************ASSOC ONLY -- NO NET SPECIFIC SET ******************/
 3511                                         if (paddrp->spp_pathmaxrxt)
 3512                                                 stcb->asoc.def_net_failure = paddrp->spp_pathmaxrxt;
 3513 
 3514                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
 3515                                                 /* Turn back on the timer */
 3516                                                 stcb->asoc.hb_is_disabled = 0;
 3517                                                 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
 3518                                         }
 3519                                         if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && (paddrp->spp_pathmtu >= SCTP_SMALLEST_PMTU)) {
 3520                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 3521                                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
 3522                                                                 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
 3523                                                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10);
 3524                                                         }
 3525                                                         if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) {
 3526                                                                 net->mtu = paddrp->spp_pathmtu + ovh;
 3527                                                                 if (net->mtu < stcb->asoc.smallest_mtu) {
 3528 #ifdef SCTP_PRINT_FOR_B_AND_M
 3529                                                                         SCTP_PRINTF("SCTP_PMTU_DISABLE calls sctp_pathmtu_adjustment:%d\n",
 3530                                                                             net->mtu);
 3531 #endif
 3532                                                                         sctp_pathmtu_adjustment(inp, stcb, net, net->mtu);
 3533                                                                 }
 3534                                                         }
 3535                                                 }
 3536                                         }
 3537                                         if (paddrp->spp_flags & SPP_PMTUD_ENABLE) {
 3538                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 3539                                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
 3540                                                                 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
 3541                                                         }
 3542                                                 }
 3543                                         }
 3544                                         if (paddrp->spp_flags & SPP_HB_DISABLE) {
 3545                                                 int cnt_of_unconf = 0;
 3546                                                 struct sctp_nets *lnet;
 3547 
 3548                                                 stcb->asoc.hb_is_disabled = 1;
 3549                                                 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
 3550                                                         if (lnet->dest_state & SCTP_ADDR_UNCONFIRMED) {
 3551                                                                 cnt_of_unconf++;
 3552                                                         }
 3553                                                 }
 3554                                                 /*
 3555                                                  * stop the timer ONLY if we
 3556                                                  * have no unconfirmed
 3557                                                  * addresses
 3558                                                  */
 3559                                                 if (cnt_of_unconf == 0) {
 3560                                                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 3561                                                                 sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net,
 3562                                                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_11);
 3563                                                         }
 3564                                                 }
 3565                                         }
 3566                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
 3567                                                 /* start up the timer. */
 3568                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 3569                                                         sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
 3570                                                 }
 3571                                         }
 3572 #ifdef INET
 3573                                         if (paddrp->spp_flags & SPP_IPV4_TOS)
 3574                                                 stcb->asoc.default_tos = paddrp->spp_ipv4_tos & 0x000000fc;
 3575 #endif
 3576 #ifdef INET6
 3577                                         if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL)
 3578                                                 stcb->asoc.default_flowlabel = paddrp->spp_ipv6_flowlabel;
 3579 #endif
 3580 
 3581                                 }
 3582                                 SCTP_TCB_UNLOCK(stcb);
 3583                         } else {
 3584                                 /************************NO TCB, SET TO default stuff ******************/
 3585                                 SCTP_INP_WLOCK(inp);
 3586                                 /*
 3587                                  * For the TOS/FLOWLABEL stuff you set it
 3588                                  * with the options on the socket
 3589                                  */
 3590                                 if (paddrp->spp_pathmaxrxt) {
 3591                                         inp->sctp_ep.def_net_failure = paddrp->spp_pathmaxrxt;
 3592                                 }
 3593                                 if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO)
 3594                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = 0;
 3595                                 else if (paddrp->spp_hbinterval) {
 3596                                         if (paddrp->spp_hbinterval > SCTP_MAX_HB_INTERVAL)
 3597                                                 paddrp->spp_hbinterval = SCTP_MAX_HB_INTERVAL;
 3598                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(paddrp->spp_hbinterval);
 3599                                 }
 3600                                 if (paddrp->spp_flags & SPP_HB_ENABLE) {
 3601                                         sctp_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
 3602 
 3603                                 } else if (paddrp->spp_flags & SPP_HB_DISABLE) {
 3604                                         sctp_feature_on(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
 3605                                 }
 3606                                 SCTP_INP_WUNLOCK(inp);
 3607                         }
 3608                 }
 3609                 break;
 3610         case SCTP_RTOINFO:
 3611                 {
 3612                         struct sctp_rtoinfo *srto;
 3613                         uint32_t new_init, new_min, new_max;
 3614 
 3615                         SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, optsize);
 3616                         SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id);
 3617 
 3618                         if (stcb) {
 3619                                 if (srto->srto_initial)
 3620                                         new_init = srto->srto_initial;
 3621                                 else
 3622                                         new_init = stcb->asoc.initial_rto;
 3623                                 if (srto->srto_max)
 3624                                         new_max = srto->srto_max;
 3625                                 else
 3626                                         new_max = stcb->asoc.maxrto;
 3627                                 if (srto->srto_min)
 3628                                         new_min = srto->srto_min;
 3629                                 else
 3630                                         new_min = stcb->asoc.minrto;
 3631                                 if ((new_min <= new_init) && (new_init <= new_max)) {
 3632                                         stcb->asoc.initial_rto = new_init;
 3633                                         stcb->asoc.maxrto = new_max;
 3634                                         stcb->asoc.minrto = new_min;
 3635                                 } else {
 3636                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EDOM);
 3637                                         error = EDOM;
 3638                                 }
 3639                                 SCTP_TCB_UNLOCK(stcb);
 3640                         } else {
 3641                                 SCTP_INP_WLOCK(inp);
 3642                                 if (srto->srto_initial)
 3643                                         new_init = srto->srto_initial;
 3644                                 else
 3645                                         new_init = inp->sctp_ep.initial_rto;
 3646                                 if (srto->srto_max)
 3647                                         new_max = srto->srto_max;
 3648                                 else
 3649                                         new_max = inp->sctp_ep.sctp_maxrto;
 3650                                 if (srto->srto_min)
 3651                                         new_min = srto->srto_min;
 3652                                 else
 3653                                         new_min = inp->sctp_ep.sctp_minrto;
 3654                                 if ((new_min <= new_init) && (new_init <= new_max)) {
 3655                                         inp->sctp_ep.initial_rto = new_init;
 3656                                         inp->sctp_ep.sctp_maxrto = new_max;
 3657                                         inp->sctp_ep.sctp_minrto = new_min;
 3658                                 } else {
 3659                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EDOM);
 3660                                         error = EDOM;
 3661                                 }
 3662                                 SCTP_INP_WUNLOCK(inp);
 3663                         }
 3664                 }
 3665                 break;
 3666         case SCTP_ASSOCINFO:
 3667                 {
 3668                         struct sctp_assocparams *sasoc;
 3669 
 3670                         SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, optsize);
 3671                         SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id);
 3672                         if (sasoc->sasoc_cookie_life) {
 3673                                 /* boundary check the cookie life */
 3674                                 if (sasoc->sasoc_cookie_life < 1000)
 3675                                         sasoc->sasoc_cookie_life = 1000;
 3676                                 if (sasoc->sasoc_cookie_life > SCTP_MAX_COOKIE_LIFE) {
 3677                                         sasoc->sasoc_cookie_life = SCTP_MAX_COOKIE_LIFE;
 3678                                 }
 3679                         }
 3680                         if (stcb) {
 3681                                 if (sasoc->sasoc_asocmaxrxt)
 3682                                         stcb->asoc.max_send_times = sasoc->sasoc_asocmaxrxt;
 3683                                 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets;
 3684                                 sasoc->sasoc_peer_rwnd = 0;
 3685                                 sasoc->sasoc_local_rwnd = 0;
 3686                                 if (sasoc->sasoc_cookie_life) {
 3687                                         stcb->asoc.cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life);
 3688                                 }
 3689                                 SCTP_TCB_UNLOCK(stcb);
 3690                         } else {
 3691                                 SCTP_INP_WLOCK(inp);
 3692                                 if (sasoc->sasoc_asocmaxrxt)
 3693                                         inp->sctp_ep.max_send_times = sasoc->sasoc_asocmaxrxt;
 3694                                 sasoc->sasoc_number_peer_destinations = 0;
 3695                                 sasoc->sasoc_peer_rwnd = 0;
 3696                                 sasoc->sasoc_local_rwnd = 0;
 3697                                 if (sasoc->sasoc_cookie_life) {
 3698                                         inp->sctp_ep.def_cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life);
 3699                                 }
 3700                                 SCTP_INP_WUNLOCK(inp);
 3701                         }
 3702                 }
 3703                 break;
 3704         case SCTP_INITMSG:
 3705                 {
 3706                         struct sctp_initmsg *sinit;
 3707 
 3708                         SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, optsize);
 3709                         SCTP_INP_WLOCK(inp);
 3710                         if (sinit->sinit_num_ostreams)
 3711                                 inp->sctp_ep.pre_open_stream_count = sinit->sinit_num_ostreams;
 3712 
 3713                         if (sinit->sinit_max_instreams)
 3714                                 inp->sctp_ep.max_open_streams_intome = sinit->sinit_max_instreams;
 3715 
 3716                         if (sinit->sinit_max_attempts)
 3717                                 inp->sctp_ep.max_init_times = sinit->sinit_max_attempts;
 3718 
 3719                         if (sinit->sinit_max_init_timeo)
 3720                                 inp->sctp_ep.initial_init_rto_max = sinit->sinit_max_init_timeo;
 3721                         SCTP_INP_WUNLOCK(inp);
 3722                 }
 3723                 break;
 3724         case SCTP_PRIMARY_ADDR:
 3725                 {
 3726                         struct sctp_setprim *spa;
 3727                         struct sctp_nets *net, *lnet;
 3728 
 3729                         SCTP_CHECK_AND_CAST(spa, optval, struct sctp_setprim, optsize);
 3730                         SCTP_FIND_STCB(inp, stcb, spa->ssp_assoc_id);
 3731 
 3732                         net = NULL;
 3733                         if (stcb) {
 3734                                 net = sctp_findnet(stcb, (struct sockaddr *)&spa->ssp_addr);
 3735                         } else {
 3736                                 /*
 3737                                  * We increment here since
 3738                                  * sctp_findassociation_ep_addr() wil do a
 3739                                  * decrement if it finds the stcb as long as
 3740                                  * the locked tcb (last argument) is NOT a
 3741                                  * TCB.. aka NULL.
 3742                                  */
 3743                                 SCTP_INP_INCR_REF(inp);
 3744                                 stcb = sctp_findassociation_ep_addr(&inp,
 3745                                     (struct sockaddr *)&spa->ssp_addr,
 3746                                     &net, NULL, NULL);
 3747                                 if (stcb == NULL) {
 3748                                         SCTP_INP_DECR_REF(inp);
 3749                                 }
 3750                         }
 3751 
 3752                         if ((stcb) && (net)) {
 3753                                 if ((net != stcb->asoc.primary_destination) &&
 3754                                     (!(net->dest_state & SCTP_ADDR_UNCONFIRMED))) {
 3755                                         /* Ok we need to set it */
 3756                                         lnet = stcb->asoc.primary_destination;
 3757                                         if (sctp_set_primary_addr(stcb, (struct sockaddr *)NULL, net) == 0) {
 3758                                                 if (net->dest_state & SCTP_ADDR_SWITCH_PRIMARY) {
 3759                                                         net->dest_state |= SCTP_ADDR_DOUBLE_SWITCH;
 3760                                                 }
 3761                                                 net->dest_state |= SCTP_ADDR_SWITCH_PRIMARY;
 3762                                         }
 3763                                 }
 3764                         } else {
 3765                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3766                                 error = EINVAL;
 3767                         }
 3768                         if (stcb) {
 3769                                 SCTP_TCB_UNLOCK(stcb);
 3770                         }
 3771                 }
 3772                 break;
 3773         case SCTP_SET_DYNAMIC_PRIMARY:
 3774                 {
 3775                         union sctp_sockstore *ss;
 3776 
 3777                         error = priv_check(curthread,
 3778                             PRIV_NETINET_RESERVEDPORT);
 3779                         if (error)
 3780                                 break;
 3781 
 3782                         SCTP_CHECK_AND_CAST(ss, optval, union sctp_sockstore, optsize);
 3783                         /* SUPER USER CHECK? */
 3784                         error = sctp_dynamic_set_primary(&ss->sa, vrf_id);
 3785                 }
 3786                 break;
 3787         case SCTP_SET_PEER_PRIMARY_ADDR:
 3788                 {
 3789                         struct sctp_setpeerprim *sspp;
 3790 
 3791                         SCTP_CHECK_AND_CAST(sspp, optval, struct sctp_setpeerprim, optsize);
 3792                         SCTP_FIND_STCB(inp, stcb, sspp->sspp_assoc_id);
 3793                         if (stcb != NULL) {
 3794                                 struct sctp_ifa *ifa;
 3795 
 3796                                 ifa = sctp_find_ifa_by_addr((struct sockaddr *)&sspp->sspp_addr,
 3797                                     stcb->asoc.vrf_id, SCTP_ADDR_NOT_LOCKED);
 3798                                 if (ifa == NULL) {
 3799                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3800                                         error = EINVAL;
 3801                                         goto out_of_it;
 3802                                 }
 3803                                 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
 3804                                         /*
 3805                                          * Must validate the ifa found is in
 3806                                          * our ep
 3807                                          */
 3808                                         struct sctp_laddr *laddr;
 3809                                         int found = 0;
 3810 
 3811                                         LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
 3812                                                 if (laddr->ifa == NULL) {
 3813                                                         SCTPDBG(SCTP_DEBUG_OUTPUT1, "%s: NULL ifa\n",
 3814                                                             __FUNCTION__);
 3815                                                         continue;
 3816                                                 }
 3817                                                 if (laddr->ifa == ifa) {
 3818                                                         found = 1;
 3819                                                         break;
 3820                                                 }
 3821                                         }
 3822                                         if (!found) {
 3823                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3824                                                 error = EINVAL;
 3825                                                 goto out_of_it;
 3826                                         }
 3827                                 }
 3828                                 if (sctp_set_primary_ip_address_sa(stcb,
 3829                                     (struct sockaddr *)&sspp->sspp_addr) != 0) {
 3830                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3831                                         error = EINVAL;
 3832                                 }
 3833                 out_of_it:
 3834                                 SCTP_TCB_UNLOCK(stcb);
 3835                         } else {
 3836                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3837                                 error = EINVAL;
 3838                         }
 3839 
 3840                 }
 3841                 break;
 3842         case SCTP_BINDX_ADD_ADDR:
 3843                 {
 3844                         struct sctp_getaddresses *addrs;
 3845                         size_t sz;
 3846                         struct thread *td;
 3847                         int prison = 0;
 3848 
 3849                         td = (struct thread *)p;
 3850                         if (jailed(td->td_ucred)) {
 3851                                 prison = 1;
 3852                         }
 3853                         SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses,
 3854                             optsize);
 3855                         if (addrs->addr->sa_family == AF_INET) {
 3856                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in);
 3857                                 if (optsize < sz) {
 3858                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3859                                         error = EINVAL;
 3860                                         break;
 3861                                 }
 3862                                 if (prison && prison_ip(td->td_ucred, 0, &(((struct sockaddr_in *)(addrs->addr))->sin_addr.s_addr))) {
 3863                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRNOTAVAIL);
 3864                                         error = EADDRNOTAVAIL;
 3865                                 }
 3866                         } else if (addrs->addr->sa_family == AF_INET6) {
 3867                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in6);
 3868                                 if (optsize < sz) {
 3869                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3870                                         error = EINVAL;
 3871                                         break;
 3872                                 }
 3873                                 /* JAIL XXXX Add else here for V6 */
 3874                         }
 3875                         sctp_bindx_add_address(so, inp, addrs->addr,
 3876                             addrs->sget_assoc_id, vrf_id,
 3877                             &error, p);
 3878                 }
 3879                 break;
 3880         case SCTP_BINDX_REM_ADDR:
 3881                 {
 3882                         struct sctp_getaddresses *addrs;
 3883                         size_t sz;
 3884                         struct thread *td;
 3885                         int prison = 0;
 3886 
 3887                         td = (struct thread *)p;
 3888                         if (jailed(td->td_ucred)) {
 3889                                 prison = 1;
 3890                         }
 3891                         SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses, optsize);
 3892                         if (addrs->addr->sa_family == AF_INET) {
 3893                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in);
 3894                                 if (optsize < sz) {
 3895                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3896                                         error = EINVAL;
 3897                                         break;
 3898                                 }
 3899                                 if (prison && prison_ip(td->td_ucred, 0, &(((struct sockaddr_in *)(addrs->addr))->sin_addr.s_addr))) {
 3900                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRNOTAVAIL);
 3901                                         error = EADDRNOTAVAIL;
 3902                                 }
 3903                         } else if (addrs->addr->sa_family == AF_INET6) {
 3904                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in6);
 3905                                 if (optsize < sz) {
 3906                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3907                                         error = EINVAL;
 3908                                         break;
 3909                                 }
 3910                                 /* JAIL XXXX Add else here for V6 */
 3911                         }
 3912                         sctp_bindx_delete_address(so, inp, addrs->addr,
 3913                             addrs->sget_assoc_id, vrf_id,
 3914                             &error);
 3915                 }
 3916                 break;
 3917         default:
 3918                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
 3919                 error = ENOPROTOOPT;
 3920                 break;
 3921         }                       /* end switch (opt) */
 3922         return (error);
 3923 }
 3924 
 3925 
 3926 int
 3927 sctp_ctloutput(struct socket *so, struct sockopt *sopt)
 3928 {
 3929         void *optval = NULL;
 3930         size_t optsize = 0;
 3931         struct sctp_inpcb *inp;
 3932         void *p;
 3933         int error = 0;
 3934 
 3935         inp = (struct sctp_inpcb *)so->so_pcb;
 3936         if (inp == 0) {
 3937                 /* I made the same as TCP since we are not setup? */
 3938                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3939                 return (ECONNRESET);
 3940         }
 3941         if (sopt->sopt_level != IPPROTO_SCTP) {
 3942                 /* wrong proto level... send back up to IP */
 3943 #ifdef INET6
 3944                 if (INP_CHECK_SOCKAF(so, AF_INET6))
 3945                         error = ip6_ctloutput(so, sopt);
 3946                 else
 3947 #endif                          /* INET6 */
 3948                         error = ip_ctloutput(so, sopt);
 3949                 return (error);
 3950         }
 3951         optsize = sopt->sopt_valsize;
 3952         if (optsize) {
 3953                 SCTP_MALLOC(optval, void *, optsize, SCTP_M_SOCKOPT);
 3954                 if (optval == NULL) {
 3955                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOBUFS);
 3956                         return (ENOBUFS);
 3957                 }
 3958                 error = sooptcopyin(sopt, optval, optsize, optsize);
 3959                 if (error) {
 3960                         SCTP_FREE(optval, SCTP_M_SOCKOPT);
 3961                         goto out;
 3962                 }
 3963         }
 3964         p = (void *)sopt->sopt_td;
 3965         if (sopt->sopt_dir == SOPT_SET) {
 3966                 error = sctp_setopt(so, sopt->sopt_name, optval, optsize, p);
 3967         } else if (sopt->sopt_dir == SOPT_GET) {
 3968                 error = sctp_getopt(so, sopt->sopt_name, optval, &optsize, p);
 3969         } else {
 3970                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3971                 error = EINVAL;
 3972         }
 3973         if ((error == 0) && (optval != NULL)) {
 3974                 error = sooptcopyout(sopt, optval, optsize);
 3975                 SCTP_FREE(optval, SCTP_M_SOCKOPT);
 3976         } else if (optval != NULL) {
 3977                 SCTP_FREE(optval, SCTP_M_SOCKOPT);
 3978         }
 3979 out:
 3980         return (error);
 3981 }
 3982 
 3983 
 3984 static int
 3985 sctp_connect(struct socket *so, struct sockaddr *addr, struct thread *p)
 3986 {
 3987         int error = 0;
 3988         int create_lock_on = 0;
 3989         uint32_t vrf_id;
 3990         struct sctp_inpcb *inp;
 3991         struct sctp_tcb *stcb = NULL;
 3992 
 3993         inp = (struct sctp_inpcb *)so->so_pcb;
 3994         if (inp == 0) {
 3995                 /* I made the same as TCP since we are not setup? */
 3996                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3997                 return (ECONNRESET);
 3998         }
 3999         if (addr == NULL) {
 4000                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4001                 return EINVAL;
 4002         }
 4003         if ((addr->sa_family == AF_INET6) && (addr->sa_len != sizeof(struct sockaddr_in6))) {
 4004                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4005                 return (EINVAL);
 4006         }
 4007         if ((addr->sa_family == AF_INET) && (addr->sa_len != sizeof(struct sockaddr_in))) {
 4008                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4009                 return (EINVAL);
 4010         }
 4011         SCTP_ASOC_CREATE_LOCK(inp);
 4012         create_lock_on = 1;
 4013 
 4014         SCTP_INP_INCR_REF(inp);
 4015         if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
 4016             (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
 4017                 /* Should I really unlock ? */
 4018                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EFAULT);
 4019                 error = EFAULT;
 4020                 goto out_now;
 4021         }
 4022 #ifdef INET6
 4023         if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) &&
 4024             (addr->sa_family == AF_INET6)) {
 4025                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4026                 error = EINVAL;
 4027                 goto out_now;
 4028         }
 4029 #endif                          /* INET6 */
 4030         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
 4031             SCTP_PCB_FLAGS_UNBOUND) {
 4032                 /* Bind a ephemeral port */
 4033                 error = sctp_inpcb_bind(so, NULL, NULL, p);
 4034                 if (error) {
 4035                         goto out_now;
 4036                 }
 4037         }
 4038         /* Now do we connect? */
 4039         if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
 4040                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4041                 error = EINVAL;
 4042                 goto out_now;
 4043         }
 4044         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
 4045             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
 4046                 /* We are already connected AND the TCP model */
 4047                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
 4048                 error = EADDRINUSE;
 4049                 goto out_now;
 4050         }
 4051         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
 4052                 SCTP_INP_RLOCK(inp);
 4053                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
 4054                 SCTP_INP_RUNLOCK(inp);
 4055         } else {
 4056                 /*
 4057                  * We increment here since sctp_findassociation_ep_addr()
 4058                  * wil do a decrement if it finds the stcb as long as the
 4059                  * locked tcb (last argument) is NOT a TCB.. aka NULL.
 4060                  */
 4061                 SCTP_INP_INCR_REF(inp);
 4062                 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL);
 4063                 if (stcb == NULL) {
 4064                         SCTP_INP_DECR_REF(inp);
 4065                 } else {
 4066                         SCTP_TCB_LOCK(stcb);
 4067                 }
 4068         }
 4069         if (stcb != NULL) {
 4070                 /* Already have or am bring up an association */
 4071                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
 4072                 error = EALREADY;
 4073                 goto out_now;
 4074         }
 4075         vrf_id = inp->def_vrf_id;
 4076         /* We are GOOD to go */
 4077         stcb = sctp_aloc_assoc(inp, addr, 1, &error, 0, vrf_id, p);
 4078         if (stcb == NULL) {
 4079                 /* Gak! no memory */
 4080                 goto out_now;
 4081         }
 4082         if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
 4083                 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
 4084                 /* Set the connected flag so we can queue data */
 4085                 soisconnecting(so);
 4086         }
 4087         SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_COOKIE_WAIT);
 4088         (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
 4089 
 4090         /* initialize authentication parameters for the assoc */
 4091         sctp_initialize_auth_params(inp, stcb);
 4092 
 4093         sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
 4094         SCTP_TCB_UNLOCK(stcb);
 4095 out_now:
 4096         if (create_lock_on) {
 4097                 SCTP_ASOC_CREATE_UNLOCK(inp);
 4098         }
 4099         SCTP_INP_DECR_REF(inp);
 4100         return error;
 4101 }
 4102 
 4103 int
 4104 sctp_listen(struct socket *so, int backlog, struct thread *p)
 4105 {
 4106         /*
 4107          * Note this module depends on the protocol processing being called
 4108          * AFTER any socket level flags and backlog are applied to the
 4109          * socket. The traditional way that the socket flags are applied is
 4110          * AFTER protocol processing. We have made a change to the
 4111          * sys/kern/uipc_socket.c module to reverse this but this MUST be in
 4112          * place if the socket API for SCTP is to work properly.
 4113          */
 4114 
 4115         int error = 0;
 4116         struct sctp_inpcb *inp;
 4117 
 4118         inp = (struct sctp_inpcb *)so->so_pcb;
 4119         if (inp == 0) {
 4120                 /* I made the same as TCP since we are not setup? */
 4121                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4122                 return (ECONNRESET);
 4123         }
 4124         SCTP_INP_RLOCK(inp);
 4125 #ifdef SCTP_LOCK_LOGGING
 4126         if (sctp_logging_level & SCTP_LOCK_LOGGING_ENABLE) {
 4127                 sctp_log_lock(inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_SOCK);
 4128         }
 4129 #endif
 4130         SOCK_LOCK(so);
 4131         error = solisten_proto_check(so);
 4132         if (error) {
 4133                 SOCK_UNLOCK(so);
 4134                 SCTP_INP_RUNLOCK(inp);
 4135                 return (error);
 4136         }
 4137         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
 4138             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
 4139                 /* We are already connected AND the TCP model */
 4140                 SCTP_INP_RUNLOCK(inp);
 4141                 SOCK_UNLOCK(so);
 4142                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
 4143                 return (EADDRINUSE);
 4144         }
 4145         if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
 4146                 /* We must do a bind. */
 4147                 SOCK_UNLOCK(so);
 4148                 SCTP_INP_RUNLOCK(inp);
 4149                 if ((error = sctp_inpcb_bind(so, NULL, NULL, p))) {
 4150                         /* bind error, probably perm */
 4151                         return (error);
 4152                 }
 4153                 SOCK_LOCK(so);
 4154         } else {
 4155                 if (backlog != 0) {
 4156                         inp->sctp_flags |= SCTP_PCB_FLAGS_LISTENING;
 4157                 } else {
 4158                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_LISTENING;
 4159                 }
 4160                 SCTP_INP_RUNLOCK(inp);
 4161         }
 4162         /* It appears for 7.0 and on, we must always call this. */
 4163         solisten_proto(so, backlog);
 4164         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
 4165                 /* remove the ACCEPTCONN flag for one-to-many sockets */
 4166                 so->so_options &= ~SO_ACCEPTCONN;
 4167         }
 4168         if (backlog == 0) {
 4169                 /* turning off listen */
 4170                 so->so_options &= ~SO_ACCEPTCONN;
 4171         }
 4172         SOCK_UNLOCK(so);
 4173         return (error);
 4174 }
 4175 
 4176 static int sctp_defered_wakeup_cnt = 0;
 4177 
 4178 int
 4179 sctp_accept(struct socket *so, struct sockaddr **addr)
 4180 {
 4181         struct sctp_tcb *stcb;
 4182         struct sctp_inpcb *inp;
 4183         union sctp_sockstore store;
 4184 
 4185         int error;
 4186 
 4187         inp = (struct sctp_inpcb *)so->so_pcb;
 4188 
 4189         if (inp == 0) {
 4190                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4191                 return (ECONNRESET);
 4192         }
 4193         SCTP_INP_RLOCK(inp);
 4194         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
 4195                 SCTP_INP_RUNLOCK(inp);
 4196                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
 4197                 return (EOPNOTSUPP);
 4198         }
 4199         if (so->so_state & SS_ISDISCONNECTED) {
 4200                 SCTP_INP_RUNLOCK(inp);
 4201                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ECONNABORTED);
 4202                 return (ECONNABORTED);
 4203         }
 4204         stcb = LIST_FIRST(&inp->sctp_asoc_list);
 4205         if (stcb == NULL) {
 4206                 SCTP_INP_RUNLOCK(inp);
 4207                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4208                 return (ECONNRESET);
 4209         }
 4210         SCTP_TCB_LOCK(stcb);
 4211         SCTP_INP_RUNLOCK(inp);
 4212         store = stcb->asoc.primary_destination->ro._l_addr;
 4213         SCTP_TCB_UNLOCK(stcb);
 4214         if (store.sa.sa_family == AF_INET) {
 4215                 struct sockaddr_in *sin;
 4216 
 4217                 SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
 4218                 sin->sin_family = AF_INET;
 4219                 sin->sin_len = sizeof(*sin);
 4220                 sin->sin_port = ((struct sockaddr_in *)&store)->sin_port;
 4221                 sin->sin_addr = ((struct sockaddr_in *)&store)->sin_addr;
 4222                 *addr = (struct sockaddr *)sin;
 4223         } else {
 4224                 struct sockaddr_in6 *sin6;
 4225 
 4226                 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
 4227                 sin6->sin6_family = AF_INET6;
 4228                 sin6->sin6_len = sizeof(*sin6);
 4229                 sin6->sin6_port = ((struct sockaddr_in6 *)&store)->sin6_port;
 4230 
 4231                 sin6->sin6_addr = ((struct sockaddr_in6 *)&store)->sin6_addr;
 4232                 if ((error = sa6_recoverscope(sin6)) != 0) {
 4233                         SCTP_FREE_SONAME(sin6);
 4234                         return (error);
 4235                 }
 4236                 *addr = (struct sockaddr *)sin6;
 4237         }
 4238         /* Wake any delayed sleep action */
 4239         if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) {
 4240                 SCTP_INP_WLOCK(inp);
 4241                 inp->sctp_flags &= ~SCTP_PCB_FLAGS_DONT_WAKE;
 4242                 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT) {
 4243                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
 4244                         SCTP_INP_WUNLOCK(inp);
 4245                         SOCKBUF_LOCK(&inp->sctp_socket->so_snd);
 4246                         if (sowriteable(inp->sctp_socket)) {
 4247                                 sowwakeup_locked(inp->sctp_socket);
 4248                         } else {
 4249                                 SOCKBUF_UNLOCK(&inp->sctp_socket->so_snd);
 4250                         }
 4251                         SCTP_INP_WLOCK(inp);
 4252                 }
 4253                 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT) {
 4254                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
 4255                         SCTP_INP_WUNLOCK(inp);
 4256                         SOCKBUF_LOCK(&inp->sctp_socket->so_rcv);
 4257                         if (soreadable(inp->sctp_socket)) {
 4258                                 sctp_defered_wakeup_cnt++;
 4259                                 sorwakeup_locked(inp->sctp_socket);
 4260                         } else {
 4261                                 SOCKBUF_UNLOCK(&inp->sctp_socket->so_rcv);
 4262                         }
 4263                         SCTP_INP_WLOCK(inp);
 4264                 }
 4265                 SCTP_INP_WUNLOCK(inp);
 4266         }
 4267         return (0);
 4268 }
 4269 
 4270 int
 4271 sctp_ingetaddr(struct socket *so, struct sockaddr **addr)
 4272 {
 4273         struct sockaddr_in *sin;
 4274         uint32_t vrf_id;
 4275         struct sctp_inpcb *inp;
 4276         struct sctp_ifa *sctp_ifa;
 4277 
 4278         /*
 4279          * Do the malloc first in case it blocks.
 4280          */
 4281         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
 4282         sin->sin_family = AF_INET;
 4283         sin->sin_len = sizeof(*sin);
 4284         inp = (struct sctp_inpcb *)so->so_pcb;
 4285         if (!inp) {
 4286                 SCTP_FREE_SONAME(sin);
 4287                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4288                 return ECONNRESET;
 4289         }
 4290         SCTP_INP_RLOCK(inp);
 4291         sin->sin_port = inp->sctp_lport;
 4292         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
 4293                 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
 4294                         struct sctp_tcb *stcb;
 4295                         struct sockaddr_in *sin_a;
 4296                         struct sctp_nets *net;
 4297                         int fnd;
 4298 
 4299                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
 4300                         if (stcb == NULL) {
 4301                                 goto notConn;
 4302                         }
 4303                         fnd = 0;
 4304                         sin_a = NULL;
 4305                         SCTP_TCB_LOCK(stcb);
 4306                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 4307                                 sin_a = (struct sockaddr_in *)&net->ro._l_addr;
 4308                                 if (sin_a == NULL)
 4309                                         /* this will make coverity happy */
 4310                                         continue;
 4311 
 4312                                 if (sin_a->sin_family == AF_INET) {
 4313                                         fnd = 1;
 4314                                         break;
 4315                                 }
 4316                         }
 4317                         if ((!fnd) || (sin_a == NULL)) {
 4318                                 /* punt */
 4319                                 SCTP_TCB_UNLOCK(stcb);
 4320                                 goto notConn;
 4321                         }
 4322                         vrf_id = inp->def_vrf_id;
 4323                         sctp_ifa = sctp_source_address_selection(inp,
 4324                             stcb,
 4325                             (sctp_route_t *) & net->ro,
 4326                             net, 0, vrf_id);
 4327                         if (sctp_ifa) {
 4328                                 sin->sin_addr = sctp_ifa->address.sin.sin_addr;
 4329                                 sctp_free_ifa(sctp_ifa);
 4330                         }
 4331                         SCTP_TCB_UNLOCK(stcb);
 4332                 } else {
 4333                         /* For the bound all case you get back 0 */
 4334         notConn:
 4335                         sin->sin_addr.s_addr = 0;
 4336                 }
 4337 
 4338         } else {
 4339                 /* Take the first IPv4 address in the list */
 4340                 struct sctp_laddr *laddr;
 4341                 int fnd = 0;
 4342 
 4343                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
 4344                         if (laddr->ifa->address.sa.sa_family == AF_INET) {
 4345                                 struct sockaddr_in *sin_a;
 4346 
 4347                                 sin_a = (struct sockaddr_in *)&laddr->ifa->address.sa;
 4348                                 sin->sin_addr = sin_a->sin_addr;
 4349                                 fnd = 1;
 4350                                 break;
 4351                         }
 4352                 }
 4353                 if (!fnd) {
 4354                         SCTP_FREE_SONAME(sin);
 4355                         SCTP_INP_RUNLOCK(inp);
 4356                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
 4357                         return ENOENT;
 4358                 }
 4359         }
 4360         SCTP_INP_RUNLOCK(inp);
 4361         (*addr) = (struct sockaddr *)sin;
 4362         return (0);
 4363 }
 4364 
 4365 int
 4366 sctp_peeraddr(struct socket *so, struct sockaddr **addr)
 4367 {
 4368         struct sockaddr_in *sin = (struct sockaddr_in *)*addr;
 4369         int fnd;
 4370         struct sockaddr_in *sin_a;
 4371         struct sctp_inpcb *inp;
 4372         struct sctp_tcb *stcb;
 4373         struct sctp_nets *net;
 4374 
 4375         /* Do the malloc first in case it blocks. */
 4376         inp = (struct sctp_inpcb *)so->so_pcb;
 4377         if ((inp == NULL) ||
 4378             ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) {
 4379                 /* UDP type and listeners will drop out here */
 4380                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
 4381                 return (ENOTCONN);
 4382         }
 4383         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
 4384         sin->sin_family = AF_INET;
 4385         sin->sin_len = sizeof(*sin);
 4386 
 4387         /* We must recapture incase we blocked */
 4388         inp = (struct sctp_inpcb *)so->so_pcb;
 4389         if (!inp) {
 4390                 SCTP_FREE_SONAME(sin);
 4391                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4392                 return ECONNRESET;
 4393         }
 4394         SCTP_INP_RLOCK(inp);
 4395         stcb = LIST_FIRST(&inp->sctp_asoc_list);
 4396         if (stcb) {
 4397                 SCTP_TCB_LOCK(stcb);
 4398         }
 4399         SCTP_INP_RUNLOCK(inp);
 4400         if (stcb == NULL) {
 4401                 SCTP_FREE_SONAME(sin);
 4402                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4403                 return ECONNRESET;
 4404         }
 4405         fnd = 0;
 4406         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 4407                 sin_a = (struct sockaddr_in *)&net->ro._l_addr;
 4408                 if (sin_a->sin_family == AF_INET) {
 4409                         fnd = 1;
 4410                         sin->sin_port = stcb->rport;
 4411                         sin->sin_addr = sin_a->sin_addr;
 4412                         break;
 4413                 }
 4414         }
 4415         SCTP_TCB_UNLOCK(stcb);
 4416         if (!fnd) {
 4417                 /* No IPv4 address */
 4418                 SCTP_FREE_SONAME(sin);
 4419                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
 4420                 return ENOENT;
 4421         }
 4422         (*addr) = (struct sockaddr *)sin;
 4423         return (0);
 4424 }
 4425 
 4426 struct pr_usrreqs sctp_usrreqs = {
 4427         .pru_abort = sctp_abort,
 4428         .pru_accept = sctp_accept,
 4429         .pru_attach = sctp_attach,
 4430         .pru_bind = sctp_bind,
 4431         .pru_connect = sctp_connect,
 4432         .pru_control = in_control,
 4433         .pru_close = sctp_close,
 4434         .pru_detach = sctp_close,
 4435         .pru_sopoll = sopoll_generic,
 4436         .pru_disconnect = sctp_disconnect,
 4437         .pru_listen = sctp_listen,
 4438         .pru_peeraddr = sctp_peeraddr,
 4439         .pru_send = sctp_sendm,
 4440         .pru_shutdown = sctp_shutdown,
 4441         .pru_sockaddr = sctp_ingetaddr,
 4442         .pru_sosend = sctp_sosend,
 4443         .pru_soreceive = sctp_soreceive
 4444 };

Cache object: df0e50fd5361d1f6b0036a4c1fa645b7


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