The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: 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) 2001-2008, by Cisco Systems, Inc. All rights reserved.
    3  *
    4  * Redistribution and use in source and binary forms, with or without
    5  * modification, are permitted provided that the following conditions are met:
    6  *
    7  * a) Redistributions of source code must retain the above copyright notice,
    8  *   this list of conditions and the following disclaimer.
    9  *
   10  * b) Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in
   12  *   the documentation and/or other materials provided with the distribution.
   13  *
   14  * c) Neither the name of Cisco Systems, Inc. nor the names of its
   15  *    contributors may be used to endorse or promote products derived
   16  *    from this software without specific prior written permission.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
   20  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
   22  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   28  * THE POSSIBILITY OF SUCH DAMAGE.
   29  */
   30 
   31 /* $KAME: sctp_usrreq.c,v 1.48 2005/03/07 23:26:08 itojun Exp $  */
   32 
   33 #include <sys/cdefs.h>
   34 __FBSDID("$FreeBSD: stable/7/sys/netinet/sctp_usrreq.c 202712 2010-01-20 18:55:40Z tuexen $");
   35 #include <netinet/sctp_os.h>
   36 #include <sys/proc.h>
   37 #include <netinet/sctp_pcb.h>
   38 #include <netinet/sctp_header.h>
   39 #include <netinet/sctp_var.h>
   40 #if defined(INET6)
   41 #endif
   42 #include <netinet/sctp_sysctl.h>
   43 #include <netinet/sctp_output.h>
   44 #include <netinet/sctp_uio.h>
   45 #include <netinet/sctp_asconf.h>
   46 #include <netinet/sctputil.h>
   47 #include <netinet/sctp_indata.h>
   48 #include <netinet/sctp_timer.h>
   49 #include <netinet/sctp_auth.h>
   50 #include <netinet/sctp_bsd_addr.h>
   51 #include <netinet/sctp_cc_functions.h>
   52 #include <netinet/udp.h>
   53 
   54 
   55 
   56 
   57 void
   58 sctp_init(void)
   59 {
   60         u_long sb_max_adj;
   61 
   62         bzero(&SCTP_BASE_STATS, sizeof(struct sctpstat));
   63 
   64         /* Initialize and modify the sysctled variables */
   65         sctp_init_sysctls();
   66         if ((nmbclusters / 8) > SCTP_ASOC_MAX_CHUNKS_ON_QUEUE)
   67                 SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue) = (nmbclusters / 8);
   68         /*
   69          * Allow a user to take no more than 1/2 the number of clusters or
   70          * the SB_MAX whichever is smaller for the send window.
   71          */
   72         sb_max_adj = (u_long)((u_quad_t) (SB_MAX) * MCLBYTES / (MSIZE + MCLBYTES));
   73         SCTP_BASE_SYSCTL(sctp_sendspace) = min(sb_max_adj,
   74             (((uint32_t) nmbclusters / 2) * SCTP_DEFAULT_MAXSEGMENT));
   75         /*
   76          * Now for the recv window, should we take the same amount? or
   77          * should I do 1/2 the SB_MAX instead in the SB_MAX min above. For
   78          * now I will just copy.
   79          */
   80         SCTP_BASE_SYSCTL(sctp_recvspace) = SCTP_BASE_SYSCTL(sctp_sendspace);
   81 
   82         SCTP_BASE_VAR(first_time) = 0;
   83         SCTP_BASE_VAR(sctp_pcb_initialized) = 0;
   84         sctp_pcb_init();
   85 #if defined(SCTP_PACKET_LOGGING)
   86         SCTP_BASE_VAR(packet_log_writers) = 0;
   87         SCTP_BASE_VAR(packet_log_end) = 0;
   88         bzero(&SCTP_BASE_VAR(packet_log_buffer), SCTP_PACKET_LOG_SIZE);
   89 #endif
   90 
   91 
   92 }
   93 
   94 void
   95 sctp_finish(void)
   96 {
   97         sctp_pcb_finish();
   98 }
   99 
  100 
  101 
  102 void
  103 sctp_pathmtu_adjustment(struct sctp_inpcb *inp,
  104     struct sctp_tcb *stcb,
  105     struct sctp_nets *net,
  106     uint16_t nxtsz)
  107 {
  108         struct sctp_tmit_chunk *chk;
  109 
  110         /* Adjust that too */
  111         stcb->asoc.smallest_mtu = nxtsz;
  112         /* now off to subtract IP_DF flag if needed */
  113 #ifdef SCTP_PRINT_FOR_B_AND_M
  114         SCTP_PRINTF("sctp_pathmtu_adjust called inp:%p stcb:%p net:%p nxtsz:%d\n",
  115             inp, stcb, net, nxtsz);
  116 #endif
  117         TAILQ_FOREACH(chk, &stcb->asoc.send_queue, sctp_next) {
  118                 if ((chk->send_size + IP_HDR_SIZE) > nxtsz) {
  119                         chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
  120                 }
  121         }
  122         TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
  123                 if ((chk->send_size + IP_HDR_SIZE) > nxtsz) {
  124                         /*
  125                          * For this guy we also mark for immediate resend
  126                          * since we sent to big of chunk
  127                          */
  128                         chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
  129                         if (chk->sent != SCTP_DATAGRAM_RESEND) {
  130                                 sctp_ucount_incr(stcb->asoc.sent_queue_retran_cnt);
  131                         }
  132                         chk->sent = SCTP_DATAGRAM_RESEND;
  133                         chk->rec.data.doing_fast_retransmit = 0;
  134                         if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_FLIGHT_LOGGING_ENABLE) {
  135                                 sctp_misc_ints(SCTP_FLIGHT_LOG_DOWN_PMTU,
  136                                     chk->whoTo->flight_size,
  137                                     chk->book_size,
  138                                     (uintptr_t) chk->whoTo,
  139                                     chk->rec.data.TSN_seq);
  140                         }
  141                         /* Clear any time so NO RTT is being done */
  142                         chk->do_rtt = 0;
  143                         sctp_flight_size_decrease(chk);
  144                         sctp_total_flight_decrease(stcb, chk);
  145                 }
  146         }
  147 }
  148 
  149 static void
  150 sctp_notify_mbuf(struct sctp_inpcb *inp,
  151     struct sctp_tcb *stcb,
  152     struct sctp_nets *net,
  153     struct ip *ip,
  154     struct sctphdr *sh)
  155 {
  156         struct icmp *icmph;
  157         int totsz, tmr_stopped = 0;
  158         uint16_t nxtsz;
  159 
  160         /* protection */
  161         if ((inp == NULL) || (stcb == NULL) || (net == NULL) ||
  162             (ip == NULL) || (sh == NULL)) {
  163                 if (stcb != NULL) {
  164                         SCTP_TCB_UNLOCK(stcb);
  165                 }
  166                 return;
  167         }
  168         /* First job is to verify the vtag matches what I would send */
  169         if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) {
  170                 SCTP_TCB_UNLOCK(stcb);
  171                 return;
  172         }
  173         icmph = (struct icmp *)((caddr_t)ip - (sizeof(struct icmp) -
  174             sizeof(struct ip)));
  175         if (icmph->icmp_type != ICMP_UNREACH) {
  176                 /* We only care about unreachable */
  177                 SCTP_TCB_UNLOCK(stcb);
  178                 return;
  179         }
  180         if (icmph->icmp_code != ICMP_UNREACH_NEEDFRAG) {
  181                 /* not a unreachable message due to frag. */
  182                 SCTP_TCB_UNLOCK(stcb);
  183                 return;
  184         }
  185         totsz = ip->ip_len;
  186 
  187         nxtsz = ntohs(icmph->icmp_nextmtu);
  188         if (nxtsz == 0) {
  189                 /*
  190                  * old type router that does not tell us what the next size
  191                  * mtu is. Rats we will have to guess (in a educated fashion
  192                  * of course)
  193                  */
  194                 nxtsz = find_next_best_mtu(totsz);
  195         }
  196         /* Stop any PMTU timer */
  197         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
  198                 tmr_stopped = 1;
  199                 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
  200                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_1);
  201         }
  202         /* Adjust destination size limit */
  203         if (net->mtu > nxtsz) {
  204                 net->mtu = nxtsz;
  205                 if (net->port) {
  206                         net->mtu -= sizeof(struct udphdr);
  207                 }
  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_BASE_SYSCTL(sctp_cmt_on_off) && SCTP_BASE_SYSCTL(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 
  520         inp = (struct sctp_inpcb *)so->so_pcb;
  521         if (inp != 0) {
  522                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
  523                 return EINVAL;
  524         }
  525         if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
  526                 error = SCTP_SORESERVE(so, SCTP_BASE_SYSCTL(sctp_sendspace), SCTP_BASE_SYSCTL(sctp_recvspace));
  527                 if (error) {
  528                         return error;
  529                 }
  530         }
  531         error = sctp_inpcb_alloc(so, vrf_id);
  532         if (error) {
  533                 return error;
  534         }
  535         inp = (struct sctp_inpcb *)so->so_pcb;
  536         SCTP_INP_WLOCK(inp);
  537         inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUND_V6;    /* I'm not v6! */
  538         ip_inp = &inp->ip_inp.inp;
  539         ip_inp->inp_vflag |= INP_IPV4;
  540         ip_inp->inp_ip_ttl = MODULE_GLOBAL(MOD_INET, ip_defttl);
  541 #ifdef IPSEC
  542         error = ipsec_init_policy(so, &ip_inp->inp_sp);
  543 #ifdef SCTP_LOG_CLOSING
  544         sctp_log_closing(inp, NULL, 17);
  545 #endif
  546         if (error != 0) {
  547                 flags = inp->sctp_flags;
  548                 if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
  549                     (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
  550 #ifdef SCTP_LOG_CLOSING
  551                         sctp_log_closing(inp, NULL, 15);
  552 #endif
  553                         SCTP_INP_WUNLOCK(inp);
  554                         sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
  555                             SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
  556                 } else {
  557                         SCTP_INP_WUNLOCK(inp);
  558                 }
  559                 return error;
  560         }
  561 #endif                          /* IPSEC */
  562         SCTP_INP_WUNLOCK(inp);
  563         return 0;
  564 }
  565 
  566 static int
  567 sctp_bind(struct socket *so, struct sockaddr *addr, struct thread *p)
  568 {
  569         struct sctp_inpcb *inp = NULL;
  570         int error;
  571 
  572 #ifdef INET6
  573         if (addr && addr->sa_family != AF_INET) {
  574                 /* must be a v4 address! */
  575                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
  576                 return EINVAL;
  577         }
  578 #endif                          /* INET6 */
  579         if (addr && (addr->sa_len != sizeof(struct sockaddr_in))) {
  580                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
  581                 return EINVAL;
  582         }
  583         inp = (struct sctp_inpcb *)so->so_pcb;
  584         if (inp == 0) {
  585                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
  586                 return EINVAL;
  587         }
  588         error = sctp_inpcb_bind(so, addr, NULL, p);
  589         return error;
  590 }
  591 
  592 void
  593 sctp_close(struct socket *so)
  594 {
  595         struct sctp_inpcb *inp;
  596         uint32_t flags;
  597 
  598         inp = (struct sctp_inpcb *)so->so_pcb;
  599         if (inp == 0)
  600                 return;
  601 
  602         /*
  603          * Inform all the lower layer assoc that we are done.
  604          */
  605 sctp_must_try_again:
  606         flags = inp->sctp_flags;
  607 #ifdef SCTP_LOG_CLOSING
  608         sctp_log_closing(inp, NULL, 17);
  609 #endif
  610         if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
  611             (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) {
  612                 if (((so->so_options & SO_LINGER) && (so->so_linger == 0)) ||
  613                     (so->so_rcv.sb_cc > 0)) {
  614 #ifdef SCTP_LOG_CLOSING
  615                         sctp_log_closing(inp, NULL, 13);
  616 #endif
  617                         sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
  618                             SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
  619                 } else {
  620 #ifdef SCTP_LOG_CLOSING
  621                         sctp_log_closing(inp, NULL, 14);
  622 #endif
  623                         sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
  624                             SCTP_CALLED_AFTER_CMPSET_OFCLOSE);
  625                 }
  626                 /*
  627                  * The socket is now detached, no matter what the state of
  628                  * the SCTP association.
  629                  */
  630                 SOCK_LOCK(so);
  631                 SCTP_SB_CLEAR(so->so_snd);
  632                 /*
  633                  * same for the rcv ones, they are only here for the
  634                  * accounting/select.
  635                  */
  636                 SCTP_SB_CLEAR(so->so_rcv);
  637 
  638                 /* Now null out the reference, we are completely detached. */
  639                 so->so_pcb = NULL;
  640                 SOCK_UNLOCK(so);
  641         } else {
  642                 flags = inp->sctp_flags;
  643                 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
  644                         goto sctp_must_try_again;
  645                 }
  646         }
  647         return;
  648 }
  649 
  650 
  651 int
  652 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
  653     struct mbuf *control, struct thread *p);
  654 
  655 
  656 int
  657 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
  658     struct mbuf *control, struct thread *p)
  659 {
  660         struct sctp_inpcb *inp;
  661         int error;
  662 
  663         inp = (struct sctp_inpcb *)so->so_pcb;
  664         if (inp == 0) {
  665                 if (control) {
  666                         sctp_m_freem(control);
  667                         control = NULL;
  668                 }
  669                 SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
  670                 sctp_m_freem(m);
  671                 return EINVAL;
  672         }
  673         /* Got to have an to address if we are NOT a connected socket */
  674         if ((addr == NULL) &&
  675             ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) ||
  676             (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE))
  677             ) {
  678                 goto connected_type;
  679         } else if (addr == NULL) {
  680                 SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EDESTADDRREQ);
  681                 error = EDESTADDRREQ;
  682                 sctp_m_freem(m);
  683                 if (control) {
  684                         sctp_m_freem(control);
  685                         control = NULL;
  686                 }
  687                 return (error);
  688         }
  689 #ifdef INET6
  690         if (addr->sa_family != AF_INET) {
  691                 /* must be a v4 address! */
  692                 SCTP_LTRACE_ERR_RET_PKT(m, inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EDESTADDRREQ);
  693                 sctp_m_freem(m);
  694                 if (control) {
  695                         sctp_m_freem(control);
  696                         control = NULL;
  697                 }
  698                 error = EDESTADDRREQ;
  699                 return EDESTADDRREQ;
  700         }
  701 #endif                          /* INET6 */
  702 connected_type:
  703         /* now what about control */
  704         if (control) {
  705                 if (inp->control) {
  706                         SCTP_PRINTF("huh? control set?\n");
  707                         sctp_m_freem(inp->control);
  708                         inp->control = NULL;
  709                 }
  710                 inp->control = control;
  711         }
  712         /* Place the data */
  713         if (inp->pkt) {
  714                 SCTP_BUF_NEXT(inp->pkt_last) = m;
  715                 inp->pkt_last = m;
  716         } else {
  717                 inp->pkt_last = inp->pkt = m;
  718         }
  719         if (
  720         /* FreeBSD uses a flag passed */
  721             ((flags & PRUS_MORETOCOME) == 0)
  722             ) {
  723                 /*
  724                  * note with the current version this code will only be used
  725                  * by OpenBSD-- NetBSD, FreeBSD, and MacOS have methods for
  726                  * re-defining sosend to use the sctp_sosend. One can
  727                  * optionally switch back to this code (by changing back the
  728                  * definitions) but this is not advisable. This code is used
  729                  * by FreeBSD when sending a file with sendfile() though.
  730                  */
  731                 int ret;
  732 
  733                 ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags);
  734                 inp->pkt = NULL;
  735                 inp->control = NULL;
  736                 return (ret);
  737         } else {
  738                 return (0);
  739         }
  740 }
  741 
  742 int
  743 sctp_disconnect(struct socket *so)
  744 {
  745         struct sctp_inpcb *inp;
  746 
  747         inp = (struct sctp_inpcb *)so->so_pcb;
  748         if (inp == NULL) {
  749                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
  750                 return (ENOTCONN);
  751         }
  752         SCTP_INP_RLOCK(inp);
  753         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
  754             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
  755                 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
  756                         /* No connection */
  757                         SCTP_INP_RUNLOCK(inp);
  758                         return (0);
  759                 } else {
  760                         struct sctp_association *asoc;
  761                         struct sctp_tcb *stcb;
  762 
  763                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
  764                         if (stcb == NULL) {
  765                                 SCTP_INP_RUNLOCK(inp);
  766                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
  767                                 return (EINVAL);
  768                         }
  769                         SCTP_TCB_LOCK(stcb);
  770                         asoc = &stcb->asoc;
  771                         if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
  772                                 /* We are about to be freed, out of here */
  773                                 SCTP_TCB_UNLOCK(stcb);
  774                                 SCTP_INP_RUNLOCK(inp);
  775                                 return (0);
  776                         }
  777                         if (((so->so_options & SO_LINGER) &&
  778                             (so->so_linger == 0)) ||
  779                             (so->so_rcv.sb_cc > 0)) {
  780                                 if (SCTP_GET_STATE(asoc) !=
  781                                     SCTP_STATE_COOKIE_WAIT) {
  782                                         /* Left with Data unread */
  783                                         struct mbuf *err;
  784 
  785                                         err = sctp_get_mbuf_for_msg(sizeof(struct sctp_paramhdr), 0, M_DONTWAIT, 1, MT_DATA);
  786                                         if (err) {
  787                                                 /*
  788                                                  * Fill in the user
  789                                                  * initiated abort
  790                                                  */
  791                                                 struct sctp_paramhdr *ph;
  792 
  793                                                 ph = mtod(err, struct sctp_paramhdr *);
  794                                                 SCTP_BUF_LEN(err) = sizeof(struct sctp_paramhdr);
  795                                                 ph->param_type = htons(SCTP_CAUSE_USER_INITIATED_ABT);
  796                                                 ph->param_length = htons(SCTP_BUF_LEN(err));
  797                                         }
  798 #if defined(SCTP_PANIC_ON_ABORT)
  799                                         panic("disconnect does an abort");
  800 #endif
  801                                         sctp_send_abort_tcb(stcb, err, SCTP_SO_LOCKED);
  802                                         SCTP_STAT_INCR_COUNTER32(sctps_aborted);
  803                                 }
  804                                 SCTP_INP_RUNLOCK(inp);
  805                                 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
  806                                     (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
  807                                         SCTP_STAT_DECR_GAUGE32(sctps_currestab);
  808                                 }
  809                                 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_3);
  810                                 /* No unlock tcb assoc is gone */
  811                                 return (0);
  812                         }
  813                         if (TAILQ_EMPTY(&asoc->send_queue) &&
  814                             TAILQ_EMPTY(&asoc->sent_queue) &&
  815                             (asoc->stream_queue_cnt == 0)) {
  816                                 /* there is nothing queued to send, so done */
  817                                 if (asoc->locked_on_sending) {
  818                                         goto abort_anyway;
  819                                 }
  820                                 if ((SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
  821                                     (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
  822                                         /* only send SHUTDOWN 1st time thru */
  823                                         sctp_stop_timers_for_shutdown(stcb);
  824                                         sctp_send_shutdown(stcb,
  825                                             stcb->asoc.primary_destination);
  826                                         sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_LOCKED);
  827                                         if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
  828                                             (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
  829                                                 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
  830                                         }
  831                                         SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT);
  832                                         SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING);
  833                                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN,
  834                                             stcb->sctp_ep, stcb,
  835                                             asoc->primary_destination);
  836                                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD,
  837                                             stcb->sctp_ep, stcb,
  838                                             asoc->primary_destination);
  839                                 }
  840                         } else {
  841                                 /*
  842                                  * we still got (or just got) data to send,
  843                                  * so set SHUTDOWN_PENDING
  844                                  */
  845                                 /*
  846                                  * XXX sockets draft says that SCTP_EOF
  847                                  * should be sent with no data. currently,
  848                                  * we will allow user data to be sent first
  849                                  * and move to SHUTDOWN-PENDING
  850                                  */
  851                                 asoc->state |= SCTP_STATE_SHUTDOWN_PENDING;
  852                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb,
  853                                     asoc->primary_destination);
  854                                 if (asoc->locked_on_sending) {
  855                                         /* Locked to send out the data */
  856                                         struct sctp_stream_queue_pending *sp;
  857 
  858                                         sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead);
  859                                         if (sp == NULL) {
  860                                                 SCTP_PRINTF("Error, sp is NULL, locked on sending is non-null strm:%d\n",
  861                                                     asoc->locked_on_sending->stream_no);
  862                                         } else {
  863                                                 if ((sp->length == 0) && (sp->msg_is_complete == 0))
  864                                                         asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT;
  865                                         }
  866                                 }
  867                                 if (TAILQ_EMPTY(&asoc->send_queue) &&
  868                                     TAILQ_EMPTY(&asoc->sent_queue) &&
  869                                     (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
  870                                         struct mbuf *op_err;
  871 
  872                         abort_anyway:
  873                                         op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
  874                                             0, M_DONTWAIT, 1, MT_DATA);
  875                                         if (op_err) {
  876                                                 /*
  877                                                  * Fill in the user
  878                                                  * initiated abort
  879                                                  */
  880                                                 struct sctp_paramhdr *ph;
  881                                                 uint32_t *ippp;
  882 
  883                                                 SCTP_BUF_LEN(op_err) =
  884                                                     (sizeof(struct sctp_paramhdr) + sizeof(uint32_t));
  885                                                 ph = mtod(op_err,
  886                                                     struct sctp_paramhdr *);
  887                                                 ph->param_type = htons(
  888                                                     SCTP_CAUSE_USER_INITIATED_ABT);
  889                                                 ph->param_length = htons(SCTP_BUF_LEN(op_err));
  890                                                 ippp = (uint32_t *) (ph + 1);
  891                                                 *ippp = htonl(SCTP_FROM_SCTP_USRREQ + SCTP_LOC_4);
  892                                         }
  893 #if defined(SCTP_PANIC_ON_ABORT)
  894                                         panic("disconnect does an abort");
  895 #endif
  896 
  897                                         stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_USRREQ + SCTP_LOC_4;
  898                                         sctp_send_abort_tcb(stcb, op_err, SCTP_SO_LOCKED);
  899                                         SCTP_STAT_INCR_COUNTER32(sctps_aborted);
  900                                         if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
  901                                             (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
  902                                                 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
  903                                         }
  904                                         SCTP_INP_RUNLOCK(inp);
  905                                         (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_5);
  906                                         return (0);
  907                                 } else {
  908                                         sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
  909                                 }
  910                         }
  911                         SCTP_TCB_UNLOCK(stcb);
  912                         SCTP_INP_RUNLOCK(inp);
  913                         return (0);
  914                 }
  915                 /* not reached */
  916         } else {
  917                 /* UDP model does not support this */
  918                 SCTP_INP_RUNLOCK(inp);
  919                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
  920                 return EOPNOTSUPP;
  921         }
  922 }
  923 
  924 int
  925 sctp_flush(struct socket *so, int how)
  926 {
  927         /*
  928          * We will just clear out the values and let subsequent close clear
  929          * out the data, if any. Note if the user did a shutdown(SHUT_RD)
  930          * they will not be able to read the data, the socket will block
  931          * that from happening.
  932          */
  933         if ((how == PRU_FLUSH_RD) || (how == PRU_FLUSH_RDWR)) {
  934                 /*
  935                  * First make sure the sb will be happy, we don't use these
  936                  * except maybe the count
  937                  */
  938                 so->so_rcv.sb_cc = 0;
  939                 so->so_rcv.sb_mbcnt = 0;
  940                 so->so_rcv.sb_mb = NULL;
  941         }
  942         if ((how == PRU_FLUSH_WR) || (how == PRU_FLUSH_RDWR)) {
  943                 /*
  944                  * First make sure the sb will be happy, we don't use these
  945                  * except maybe the count
  946                  */
  947                 so->so_snd.sb_cc = 0;
  948                 so->so_snd.sb_mbcnt = 0;
  949                 so->so_snd.sb_mb = NULL;
  950 
  951         }
  952         return (0);
  953 }
  954 
  955 int
  956 sctp_shutdown(struct socket *so)
  957 {
  958         struct sctp_inpcb *inp;
  959 
  960         inp = (struct sctp_inpcb *)so->so_pcb;
  961         if (inp == 0) {
  962                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
  963                 return EINVAL;
  964         }
  965         SCTP_INP_RLOCK(inp);
  966         /* For UDP model this is a invalid call */
  967         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
  968                 /* Restore the flags that the soshutdown took away. */
  969                 so->so_rcv.sb_state &= ~SBS_CANTRCVMORE;
  970                 /* This proc will wakeup for read and do nothing (I hope) */
  971                 SCTP_INP_RUNLOCK(inp);
  972                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
  973                 return (EOPNOTSUPP);
  974         }
  975         /*
  976          * Ok if we reach here its the TCP model and it is either a SHUT_WR
  977          * or SHUT_RDWR. This means we put the shutdown flag against it.
  978          */
  979         {
  980                 struct sctp_tcb *stcb;
  981                 struct sctp_association *asoc;
  982 
  983                 socantsendmore(so);
  984 
  985                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
  986                 if (stcb == NULL) {
  987                         /*
  988                          * Ok we hit the case that the shutdown call was
  989                          * made after an abort or something. Nothing to do
  990                          * now.
  991                          */
  992                         SCTP_INP_RUNLOCK(inp);
  993                         return (0);
  994                 }
  995                 SCTP_TCB_LOCK(stcb);
  996                 asoc = &stcb->asoc;
  997                 if (TAILQ_EMPTY(&asoc->send_queue) &&
  998                     TAILQ_EMPTY(&asoc->sent_queue) &&
  999                     (asoc->stream_queue_cnt == 0)) {
 1000                         if (asoc->locked_on_sending) {
 1001                                 goto abort_anyway;
 1002                         }
 1003                         /* there is nothing queued to send, so I'm done... */
 1004                         if (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) {
 1005                                 /* only send SHUTDOWN the first time through */
 1006                                 sctp_stop_timers_for_shutdown(stcb);
 1007                                 sctp_send_shutdown(stcb,
 1008                                     stcb->asoc.primary_destination);
 1009                                 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_LOCKED);
 1010                                 if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
 1011                                     (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
 1012                                         SCTP_STAT_DECR_GAUGE32(sctps_currestab);
 1013                                 }
 1014                                 SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT);
 1015                                 SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING);
 1016                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN,
 1017                                     stcb->sctp_ep, stcb,
 1018                                     asoc->primary_destination);
 1019                                 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD,
 1020                                     stcb->sctp_ep, stcb,
 1021                                     asoc->primary_destination);
 1022                         }
 1023                 } else {
 1024                         /*
 1025                          * we still got (or just got) data to send, so set
 1026                          * SHUTDOWN_PENDING
 1027                          */
 1028                         asoc->state |= SCTP_STATE_SHUTDOWN_PENDING;
 1029                         sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, stcb->sctp_ep, stcb,
 1030                             asoc->primary_destination);
 1031 
 1032                         if (asoc->locked_on_sending) {
 1033                                 /* Locked to send out the data */
 1034                                 struct sctp_stream_queue_pending *sp;
 1035 
 1036                                 sp = TAILQ_LAST(&asoc->locked_on_sending->outqueue, sctp_streamhead);
 1037                                 if (sp == NULL) {
 1038                                         SCTP_PRINTF("Error, sp is NULL, locked on sending is non-null strm:%d\n",
 1039                                             asoc->locked_on_sending->stream_no);
 1040                                 } else {
 1041                                         if ((sp->length == 0) && (sp->msg_is_complete == 0)) {
 1042                                                 asoc->state |= SCTP_STATE_PARTIAL_MSG_LEFT;
 1043                                         }
 1044                                 }
 1045                         }
 1046                         if (TAILQ_EMPTY(&asoc->send_queue) &&
 1047                             TAILQ_EMPTY(&asoc->sent_queue) &&
 1048                             (asoc->state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
 1049                                 struct mbuf *op_err;
 1050 
 1051                 abort_anyway:
 1052                                 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
 1053                                     0, M_DONTWAIT, 1, MT_DATA);
 1054                                 if (op_err) {
 1055                                         /* Fill in the user initiated abort */
 1056                                         struct sctp_paramhdr *ph;
 1057                                         uint32_t *ippp;
 1058 
 1059                                         SCTP_BUF_LEN(op_err) =
 1060                                             sizeof(struct sctp_paramhdr) + sizeof(uint32_t);
 1061                                         ph = mtod(op_err,
 1062                                             struct sctp_paramhdr *);
 1063                                         ph->param_type = htons(
 1064                                             SCTP_CAUSE_USER_INITIATED_ABT);
 1065                                         ph->param_length = htons(SCTP_BUF_LEN(op_err));
 1066                                         ippp = (uint32_t *) (ph + 1);
 1067                                         *ippp = htonl(SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6);
 1068                                 }
 1069 #if defined(SCTP_PANIC_ON_ABORT)
 1070                                 panic("shutdown does an abort");
 1071 #endif
 1072                                 stcb->sctp_ep->last_abort_code = SCTP_FROM_SCTP_USRREQ + SCTP_LOC_6;
 1073                                 sctp_abort_an_association(stcb->sctp_ep, stcb,
 1074                                     SCTP_RESPONSE_TO_USER_REQ,
 1075                                     op_err, SCTP_SO_LOCKED);
 1076                                 goto skip_unlock;
 1077                         } else {
 1078                                 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
 1079                         }
 1080                 }
 1081                 SCTP_TCB_UNLOCK(stcb);
 1082         }
 1083 skip_unlock:
 1084         SCTP_INP_RUNLOCK(inp);
 1085         return 0;
 1086 }
 1087 
 1088 /*
 1089  * copies a "user" presentable address and removes embedded scope, etc.
 1090  * returns 0 on success, 1 on error
 1091  */
 1092 static uint32_t
 1093 sctp_fill_user_address(struct sockaddr_storage *ss, struct sockaddr *sa)
 1094 {
 1095 #ifdef INET6
 1096         struct sockaddr_in6 lsa6;
 1097 
 1098         sa = (struct sockaddr *)sctp_recover_scope((struct sockaddr_in6 *)sa,
 1099             &lsa6);
 1100 #endif
 1101         memcpy(ss, sa, sa->sa_len);
 1102         return (0);
 1103 }
 1104 
 1105 
 1106 
 1107 /*
 1108  * NOTE: assumes addr lock is held
 1109  */
 1110 static size_t
 1111 sctp_fill_up_addresses_vrf(struct sctp_inpcb *inp,
 1112     struct sctp_tcb *stcb,
 1113     size_t limit,
 1114     struct sockaddr_storage *sas,
 1115     uint32_t vrf_id)
 1116 {
 1117         struct sctp_ifn *sctp_ifn;
 1118         struct sctp_ifa *sctp_ifa;
 1119         int loopback_scope, ipv4_local_scope, local_scope, site_scope;
 1120         size_t actual;
 1121         int ipv4_addr_legal, ipv6_addr_legal;
 1122         struct sctp_vrf *vrf;
 1123 
 1124         actual = 0;
 1125         if (limit <= 0)
 1126                 return (actual);
 1127 
 1128         if (stcb) {
 1129                 /* Turn on all the appropriate scope */
 1130                 loopback_scope = stcb->asoc.loopback_scope;
 1131                 ipv4_local_scope = stcb->asoc.ipv4_local_scope;
 1132                 local_scope = stcb->asoc.local_scope;
 1133                 site_scope = stcb->asoc.site_scope;
 1134         } else {
 1135                 /* Turn on ALL scope, since we look at the EP */
 1136                 loopback_scope = ipv4_local_scope = local_scope =
 1137                     site_scope = 1;
 1138         }
 1139         ipv4_addr_legal = ipv6_addr_legal = 0;
 1140         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
 1141                 ipv6_addr_legal = 1;
 1142                 if (SCTP_IPV6_V6ONLY(inp) == 0) {
 1143                         ipv4_addr_legal = 1;
 1144                 }
 1145         } else {
 1146                 ipv4_addr_legal = 1;
 1147         }
 1148         vrf = sctp_find_vrf(vrf_id);
 1149         if (vrf == NULL) {
 1150                 return (0);
 1151         }
 1152         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
 1153                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
 1154                         if ((loopback_scope == 0) &&
 1155                             SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
 1156                                 /* Skip loopback if loopback_scope not set */
 1157                                 continue;
 1158                         }
 1159                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
 1160                                 if (stcb) {
 1161                                         /*
 1162                                          * For the BOUND-ALL case, the list
 1163                                          * associated with a TCB is Always
 1164                                          * considered a reverse list.. i.e.
 1165                                          * it lists addresses that are NOT
 1166                                          * part of the association. If this
 1167                                          * is one of those we must skip it.
 1168                                          */
 1169                                         if (sctp_is_addr_restricted(stcb,
 1170                                             sctp_ifa)) {
 1171                                                 continue;
 1172                                         }
 1173                                 }
 1174                                 switch (sctp_ifa->address.sa.sa_family) {
 1175                                 case AF_INET:
 1176                                         if (ipv4_addr_legal) {
 1177                                                 struct sockaddr_in *sin;
 1178 
 1179                                                 sin = (struct sockaddr_in *)&sctp_ifa->address.sa;
 1180                                                 if (sin->sin_addr.s_addr == 0) {
 1181                                                         /*
 1182                                                          * we skip
 1183                                                          * unspecifed
 1184                                                          * addresses
 1185                                                          */
 1186                                                         continue;
 1187                                                 }
 1188                                                 if ((ipv4_local_scope == 0) &&
 1189                                                     (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
 1190                                                         continue;
 1191                                                 }
 1192 #ifdef INET6
 1193                                                 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
 1194                                                         in6_sin_2_v4mapsin6(sin, (struct sockaddr_in6 *)sas);
 1195                                                         ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
 1196                                                         sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(struct sockaddr_in6));
 1197                                                         actual += sizeof(struct sockaddr_in6);
 1198                                                 } else {
 1199 #endif
 1200                                                         memcpy(sas, sin, sizeof(*sin));
 1201                                                         ((struct sockaddr_in *)sas)->sin_port = inp->sctp_lport;
 1202                                                         sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(*sin));
 1203                                                         actual += sizeof(*sin);
 1204 #ifdef INET6
 1205                                                 }
 1206 #endif
 1207                                                 if (actual >= limit) {
 1208                                                         return (actual);
 1209                                                 }
 1210                                         } else {
 1211                                                 continue;
 1212                                         }
 1213                                         break;
 1214 #ifdef INET6
 1215                                 case AF_INET6:
 1216                                         if (ipv6_addr_legal) {
 1217                                                 struct sockaddr_in6 *sin6;
 1218 
 1219                                                 sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa;
 1220                                                 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
 1221                                                         /*
 1222                                                          * we skip
 1223                                                          * unspecifed
 1224                                                          * addresses
 1225                                                          */
 1226                                                         continue;
 1227                                                 }
 1228                                                 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
 1229                                                         if (local_scope == 0)
 1230                                                                 continue;
 1231                                                         if (sin6->sin6_scope_id == 0) {
 1232                                                                 if (sa6_recoverscope(sin6) != 0)
 1233                                                                         /*
 1234                                                                          * 
 1235                                                                          * bad
 1236                                                                          * 
 1237                                                                          * li
 1238                                                                          * nk
 1239                                                                          * 
 1240                                                                          * loc
 1241                                                                          * al
 1242                                                                          * 
 1243                                                                          * add
 1244                                                                          * re
 1245                                                                          * ss
 1246                                                                          * */
 1247                                                                         continue;
 1248                                                         }
 1249                                                 }
 1250                                                 if ((site_scope == 0) &&
 1251                                                     (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
 1252                                                         continue;
 1253                                                 }
 1254                                                 memcpy(sas, sin6, sizeof(*sin6));
 1255                                                 ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
 1256                                                 sas = (struct sockaddr_storage *)((caddr_t)sas + sizeof(*sin6));
 1257                                                 actual += sizeof(*sin6);
 1258                                                 if (actual >= limit) {
 1259                                                         return (actual);
 1260                                                 }
 1261                                         } else {
 1262                                                 continue;
 1263                                         }
 1264                                         break;
 1265 #endif
 1266                                 default:
 1267                                         /* TSNH */
 1268                                         break;
 1269                                 }
 1270                         }
 1271                 }
 1272         } else {
 1273                 struct sctp_laddr *laddr;
 1274 
 1275                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
 1276                         if (stcb) {
 1277                                 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
 1278                                         continue;
 1279                                 }
 1280                         }
 1281                         if (sctp_fill_user_address(sas, &laddr->ifa->address.sa))
 1282                                 continue;
 1283 
 1284                         ((struct sockaddr_in6 *)sas)->sin6_port = inp->sctp_lport;
 1285                         sas = (struct sockaddr_storage *)((caddr_t)sas +
 1286                             laddr->ifa->address.sa.sa_len);
 1287                         actual += laddr->ifa->address.sa.sa_len;
 1288                         if (actual >= limit) {
 1289                                 return (actual);
 1290                         }
 1291                 }
 1292         }
 1293         return (actual);
 1294 }
 1295 
 1296 static size_t
 1297 sctp_fill_up_addresses(struct sctp_inpcb *inp,
 1298     struct sctp_tcb *stcb,
 1299     size_t limit,
 1300     struct sockaddr_storage *sas)
 1301 {
 1302         size_t size = 0;
 1303 
 1304         SCTP_IPI_ADDR_RLOCK();
 1305         /* fill up addresses for the endpoint's default vrf */
 1306         size = sctp_fill_up_addresses_vrf(inp, stcb, limit, sas,
 1307             inp->def_vrf_id);
 1308         SCTP_IPI_ADDR_RUNLOCK();
 1309         return (size);
 1310 }
 1311 
 1312 /*
 1313  * NOTE: assumes addr lock is held
 1314  */
 1315 static int
 1316 sctp_count_max_addresses_vrf(struct sctp_inpcb *inp, uint32_t vrf_id)
 1317 {
 1318         int cnt = 0;
 1319         struct sctp_vrf *vrf = NULL;
 1320 
 1321         /*
 1322          * In both sub-set bound an bound_all cases we return the MAXIMUM
 1323          * number of addresses that you COULD get. In reality the sub-set
 1324          * bound may have an exclusion list for a given TCB OR in the
 1325          * bound-all case a TCB may NOT include the loopback or other
 1326          * addresses as well.
 1327          */
 1328         vrf = sctp_find_vrf(vrf_id);
 1329         if (vrf == NULL) {
 1330                 return (0);
 1331         }
 1332         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
 1333                 struct sctp_ifn *sctp_ifn;
 1334                 struct sctp_ifa *sctp_ifa;
 1335 
 1336                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
 1337                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
 1338                                 /* Count them if they are the right type */
 1339                                 if (sctp_ifa->address.sa.sa_family == AF_INET) {
 1340                                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4))
 1341                                                 cnt += sizeof(struct sockaddr_in6);
 1342                                         else
 1343                                                 cnt += sizeof(struct sockaddr_in);
 1344 
 1345                                 } else if (sctp_ifa->address.sa.sa_family == AF_INET6)
 1346                                         cnt += sizeof(struct sockaddr_in6);
 1347                         }
 1348                 }
 1349         } else {
 1350                 struct sctp_laddr *laddr;
 1351 
 1352                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
 1353                         if (laddr->ifa->address.sa.sa_family == AF_INET) {
 1354                                 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4))
 1355                                         cnt += sizeof(struct sockaddr_in6);
 1356                                 else
 1357                                         cnt += sizeof(struct sockaddr_in);
 1358 
 1359                         } else if (laddr->ifa->address.sa.sa_family == AF_INET6)
 1360                                 cnt += sizeof(struct sockaddr_in6);
 1361                 }
 1362         }
 1363         return (cnt);
 1364 }
 1365 
 1366 static int
 1367 sctp_count_max_addresses(struct sctp_inpcb *inp)
 1368 {
 1369         int cnt = 0;
 1370 
 1371         SCTP_IPI_ADDR_RLOCK();
 1372         /* count addresses for the endpoint's default VRF */
 1373         cnt = sctp_count_max_addresses_vrf(inp, inp->def_vrf_id);
 1374         SCTP_IPI_ADDR_RUNLOCK();
 1375         return (cnt);
 1376 }
 1377 
 1378 static int
 1379 sctp_do_connect_x(struct socket *so, struct sctp_inpcb *inp, void *optval,
 1380     size_t optsize, void *p, int delay)
 1381 {
 1382         int error = 0;
 1383         int creat_lock_on = 0;
 1384         struct sctp_tcb *stcb = NULL;
 1385         struct sockaddr *sa;
 1386         int num_v6 = 0, num_v4 = 0, *totaddrp, totaddr;
 1387         int added = 0;
 1388         uint32_t vrf_id;
 1389         int bad_addresses = 0;
 1390         sctp_assoc_t *a_id;
 1391 
 1392         SCTPDBG(SCTP_DEBUG_PCB1, "Connectx called\n");
 1393 
 1394         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
 1395             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
 1396                 /* We are already connected AND the TCP model */
 1397                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
 1398                 return (EADDRINUSE);
 1399         }
 1400         if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
 1401             (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE))) {
 1402                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 1403                 return (EINVAL);
 1404         }
 1405         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
 1406                 SCTP_INP_RLOCK(inp);
 1407                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
 1408                 SCTP_INP_RUNLOCK(inp);
 1409         }
 1410         if (stcb) {
 1411                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
 1412                 return (EALREADY);
 1413         }
 1414         SCTP_INP_INCR_REF(inp);
 1415         SCTP_ASOC_CREATE_LOCK(inp);
 1416         creat_lock_on = 1;
 1417         if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
 1418             (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
 1419                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EFAULT);
 1420                 error = EFAULT;
 1421                 goto out_now;
 1422         }
 1423         totaddrp = (int *)optval;
 1424         totaddr = *totaddrp;
 1425         sa = (struct sockaddr *)(totaddrp + 1);
 1426         stcb = sctp_connectx_helper_find(inp, sa, &totaddr, &num_v4, &num_v6, &error, (optsize - sizeof(int)), &bad_addresses);
 1427         if ((stcb != NULL) || bad_addresses) {
 1428                 /* Already have or am bring up an association */
 1429                 SCTP_ASOC_CREATE_UNLOCK(inp);
 1430                 creat_lock_on = 0;
 1431                 if (stcb)
 1432                         SCTP_TCB_UNLOCK(stcb);
 1433                 if (bad_addresses == 0) {
 1434                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
 1435                         error = EALREADY;
 1436                 }
 1437                 goto out_now;
 1438         }
 1439 #ifdef INET6
 1440         if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) &&
 1441             (num_v6 > 0)) {
 1442                 error = EINVAL;
 1443                 goto out_now;
 1444         }
 1445         if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
 1446             (num_v4 > 0)) {
 1447                 struct in6pcb *inp6;
 1448 
 1449                 inp6 = (struct in6pcb *)inp;
 1450                 if (SCTP_IPV6_V6ONLY(inp6)) {
 1451                         /*
 1452                          * if IPV6_V6ONLY flag, ignore connections destined
 1453                          * to a v4 addr or v4-mapped addr
 1454                          */
 1455                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 1456                         error = EINVAL;
 1457                         goto out_now;
 1458                 }
 1459         }
 1460 #endif                          /* INET6 */
 1461         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
 1462             SCTP_PCB_FLAGS_UNBOUND) {
 1463                 /* Bind a ephemeral port */
 1464                 error = sctp_inpcb_bind(so, NULL, NULL, p);
 1465                 if (error) {
 1466                         goto out_now;
 1467                 }
 1468         }
 1469         /* FIX ME: do we want to pass in a vrf on the connect call? */
 1470         vrf_id = inp->def_vrf_id;
 1471 
 1472 
 1473         /* We are GOOD to go */
 1474         stcb = sctp_aloc_assoc(inp, sa, 1, &error, 0, vrf_id,
 1475             (struct thread *)p
 1476             );
 1477         if (stcb == NULL) {
 1478                 /* Gak! no memory */
 1479                 goto out_now;
 1480         }
 1481         SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_COOKIE_WAIT);
 1482         /* move to second address */
 1483         if (sa->sa_family == AF_INET)
 1484                 sa = (struct sockaddr *)((caddr_t)sa + sizeof(struct sockaddr_in));
 1485         else
 1486                 sa = (struct sockaddr *)((caddr_t)sa + sizeof(struct sockaddr_in6));
 1487 
 1488         error = 0;
 1489         added = sctp_connectx_helper_add(stcb, sa, (totaddr - 1), &error);
 1490         /* Fill in the return id */
 1491         if (error) {
 1492                 (void)sctp_free_assoc(inp, stcb, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_12);
 1493                 goto out_now;
 1494         }
 1495         a_id = (sctp_assoc_t *) optval;
 1496         *a_id = sctp_get_associd(stcb);
 1497 
 1498         /* initialize authentication parameters for the assoc */
 1499         sctp_initialize_auth_params(inp, stcb);
 1500 
 1501         if (delay) {
 1502                 /* doing delayed connection */
 1503                 stcb->asoc.delayed_connection = 1;
 1504                 sctp_timer_start(SCTP_TIMER_TYPE_INIT, inp, stcb, stcb->asoc.primary_destination);
 1505         } else {
 1506                 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
 1507                 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
 1508         }
 1509         SCTP_TCB_UNLOCK(stcb);
 1510         if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
 1511                 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
 1512                 /* Set the connected flag so we can queue data */
 1513                 soisconnecting(so);
 1514         }
 1515 out_now:
 1516         if (creat_lock_on) {
 1517                 SCTP_ASOC_CREATE_UNLOCK(inp);
 1518         }
 1519         SCTP_INP_DECR_REF(inp);
 1520         return error;
 1521 }
 1522 
 1523 #define SCTP_FIND_STCB(inp, stcb, assoc_id) { \
 1524         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||\
 1525             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) { \
 1526                 SCTP_INP_RLOCK(inp); \
 1527                 stcb = LIST_FIRST(&inp->sctp_asoc_list); \
 1528                 if (stcb) { \
 1529                         SCTP_TCB_LOCK(stcb); \
 1530                 } \
 1531                 SCTP_INP_RUNLOCK(inp); \
 1532         } else if (assoc_id != 0) { \
 1533                 stcb = sctp_findassociation_ep_asocid(inp, assoc_id, 1); \
 1534                 if (stcb == NULL) { \
 1535                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT); \
 1536                         error = ENOENT; \
 1537                         break; \
 1538                 } \
 1539         } else { \
 1540                 stcb = NULL; \
 1541         } \
 1542   }
 1543 
 1544 
 1545 #define SCTP_CHECK_AND_CAST(destp, srcp, type, size)  {\
 1546         if (size < sizeof(type)) { \
 1547                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL); \
 1548                 error = EINVAL; \
 1549                 break; \
 1550         } else { \
 1551                 destp = (type *)srcp; \
 1552         } \
 1553       }
 1554 
 1555 static int
 1556 sctp_getopt(struct socket *so, int optname, void *optval, size_t *optsize,
 1557     void *p)
 1558 {
 1559         struct sctp_inpcb *inp = NULL;
 1560         int error, val = 0;
 1561         struct sctp_tcb *stcb = NULL;
 1562 
 1563         if (optval == NULL) {
 1564                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 1565                 return (EINVAL);
 1566         }
 1567         inp = (struct sctp_inpcb *)so->so_pcb;
 1568         if (inp == 0) {
 1569                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 1570                 return EINVAL;
 1571         }
 1572         error = 0;
 1573 
 1574         switch (optname) {
 1575         case SCTP_NODELAY:
 1576         case SCTP_AUTOCLOSE:
 1577         case SCTP_EXPLICIT_EOR:
 1578         case SCTP_AUTO_ASCONF:
 1579         case SCTP_DISABLE_FRAGMENTS:
 1580         case SCTP_I_WANT_MAPPED_V4_ADDR:
 1581         case SCTP_USE_EXT_RCVINFO:
 1582                 SCTP_INP_RLOCK(inp);
 1583                 switch (optname) {
 1584                 case SCTP_DISABLE_FRAGMENTS:
 1585                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NO_FRAGMENT);
 1586                         break;
 1587                 case SCTP_I_WANT_MAPPED_V4_ADDR:
 1588                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4);
 1589                         break;
 1590                 case SCTP_AUTO_ASCONF:
 1591                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
 1592                                 /* only valid for bound all sockets */
 1593                                 val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
 1594                         } else {
 1595                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 1596                                 error = EINVAL;
 1597                                 goto flags_out;
 1598                         }
 1599                         break;
 1600                 case SCTP_EXPLICIT_EOR:
 1601                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
 1602                         break;
 1603                 case SCTP_NODELAY:
 1604                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NODELAY);
 1605                         break;
 1606                 case SCTP_USE_EXT_RCVINFO:
 1607                         val = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO);
 1608                         break;
 1609                 case SCTP_AUTOCLOSE:
 1610                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTOCLOSE))
 1611                                 val = TICKS_TO_SEC(inp->sctp_ep.auto_close_time);
 1612                         else
 1613                                 val = 0;
 1614                         break;
 1615 
 1616                 default:
 1617                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
 1618                         error = ENOPROTOOPT;
 1619                 }               /* end switch (sopt->sopt_name) */
 1620                 if (optname != SCTP_AUTOCLOSE) {
 1621                         /* make it an "on/off" value */
 1622                         val = (val != 0);
 1623                 }
 1624                 if (*optsize < sizeof(val)) {
 1625                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 1626                         error = EINVAL;
 1627                 }
 1628 flags_out:
 1629                 SCTP_INP_RUNLOCK(inp);
 1630                 if (error == 0) {
 1631                         /* return the option value */
 1632                         *(int *)optval = val;
 1633                         *optsize = sizeof(val);
 1634                 }
 1635                 break;
 1636         case SCTP_GET_PACKET_LOG:
 1637                 {
 1638 #ifdef  SCTP_PACKET_LOGGING
 1639                         uint8_t *target;
 1640                         int ret;
 1641 
 1642                         SCTP_CHECK_AND_CAST(target, optval, uint8_t, *optsize);
 1643                         ret = sctp_copy_out_packet_log(target, (int)*optsize);
 1644                         *optsize = ret;
 1645 #else
 1646                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
 1647                         error = EOPNOTSUPP;
 1648 #endif
 1649                         break;
 1650                 }
 1651         case SCTP_REUSE_PORT:
 1652                 {
 1653                         uint32_t *value;
 1654 
 1655                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE)) {
 1656                                 /* Can't do this for a 1-m socket */
 1657                                 error = EINVAL;
 1658                                 break;
 1659                         }
 1660                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
 1661                         *value = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE);
 1662                         *optsize = sizeof(uint32_t);
 1663                 }
 1664                 break;
 1665         case SCTP_PARTIAL_DELIVERY_POINT:
 1666                 {
 1667                         uint32_t *value;
 1668 
 1669                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
 1670                         *value = inp->partial_delivery_point;
 1671                         *optsize = sizeof(uint32_t);
 1672                 }
 1673                 break;
 1674         case SCTP_FRAGMENT_INTERLEAVE:
 1675                 {
 1676                         uint32_t *value;
 1677 
 1678                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
 1679                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) {
 1680                                 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) {
 1681                                         *value = SCTP_FRAG_LEVEL_2;
 1682                                 } else {
 1683                                         *value = SCTP_FRAG_LEVEL_1;
 1684                                 }
 1685                         } else {
 1686                                 *value = SCTP_FRAG_LEVEL_0;
 1687                         }
 1688                         *optsize = sizeof(uint32_t);
 1689                 }
 1690                 break;
 1691         case SCTP_CMT_ON_OFF:
 1692                 {
 1693                         struct sctp_assoc_value *av;
 1694 
 1695                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
 1696                         if (SCTP_BASE_SYSCTL(sctp_cmt_on_off)) {
 1697                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
 1698                                 if (stcb) {
 1699                                         av->assoc_value = stcb->asoc.sctp_cmt_on_off;
 1700                                         SCTP_TCB_UNLOCK(stcb);
 1701 
 1702                                 } else {
 1703                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
 1704                                         error = ENOTCONN;
 1705                                 }
 1706                         } else {
 1707                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
 1708                                 error = ENOPROTOOPT;
 1709                         }
 1710                         *optsize = sizeof(*av);
 1711                 }
 1712                 break;
 1713                 /* EY - set socket option for nr_sacks  */
 1714         case SCTP_NR_SACK_ON_OFF:
 1715                 {
 1716                         struct sctp_assoc_value *av;
 1717 
 1718                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
 1719                         if (SCTP_BASE_SYSCTL(sctp_nr_sack_on_off)) {
 1720                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
 1721                                 if (stcb) {
 1722                                         av->assoc_value = stcb->asoc.sctp_nr_sack_on_off;
 1723                                         SCTP_TCB_UNLOCK(stcb);
 1724 
 1725                                 } else {
 1726                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
 1727                                         error = ENOTCONN;
 1728                                 }
 1729                         } else {
 1730                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
 1731                                 error = ENOPROTOOPT;
 1732                         }
 1733                         *optsize = sizeof(*av);
 1734                 }
 1735                 break;
 1736                 /* JRS - Get socket option for pluggable congestion control */
 1737         case SCTP_PLUGGABLE_CC:
 1738                 {
 1739                         struct sctp_assoc_value *av;
 1740 
 1741                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
 1742                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
 1743                         if (stcb) {
 1744                                 av->assoc_value = stcb->asoc.congestion_control_module;
 1745                                 SCTP_TCB_UNLOCK(stcb);
 1746                         } else {
 1747                                 av->assoc_value = inp->sctp_ep.sctp_default_cc_module;
 1748                         }
 1749                         *optsize = sizeof(*av);
 1750                 }
 1751                 break;
 1752         case SCTP_GET_ADDR_LEN:
 1753                 {
 1754                         struct sctp_assoc_value *av;
 1755 
 1756                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
 1757                         error = EINVAL;
 1758 #ifdef INET
 1759                         if (av->assoc_value == AF_INET) {
 1760                                 av->assoc_value = sizeof(struct sockaddr_in);
 1761                                 error = 0;
 1762                         }
 1763 #endif
 1764 #ifdef INET6
 1765                         if (av->assoc_value == AF_INET6) {
 1766                                 av->assoc_value = sizeof(struct sockaddr_in6);
 1767                                 error = 0;
 1768                         }
 1769 #endif
 1770                         if (error) {
 1771                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 1772                         }
 1773                         *optsize = sizeof(*av);
 1774                 }
 1775                 break;
 1776         case SCTP_GET_ASSOC_NUMBER:
 1777                 {
 1778                         uint32_t *value, cnt;
 1779 
 1780                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
 1781                         cnt = 0;
 1782                         SCTP_INP_RLOCK(inp);
 1783                         LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
 1784                                 cnt++;
 1785                         }
 1786                         SCTP_INP_RUNLOCK(inp);
 1787                         *value = cnt;
 1788                         *optsize = sizeof(uint32_t);
 1789                 }
 1790                 break;
 1791 
 1792         case SCTP_GET_ASSOC_ID_LIST:
 1793                 {
 1794                         struct sctp_assoc_ids *ids;
 1795                         unsigned int at, limit;
 1796 
 1797                         SCTP_CHECK_AND_CAST(ids, optval, struct sctp_assoc_ids, *optsize);
 1798                         at = 0;
 1799                         limit = (*optsize - sizeof(uint32_t)) / sizeof(sctp_assoc_t);
 1800                         SCTP_INP_RLOCK(inp);
 1801                         LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
 1802                                 if (at < limit) {
 1803                                         ids->gaids_assoc_id[at++] = sctp_get_associd(stcb);
 1804                                 } else {
 1805                                         error = EINVAL;
 1806                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 1807                                         break;
 1808                                 }
 1809                         }
 1810                         SCTP_INP_RUNLOCK(inp);
 1811                         ids->gaids_number_of_ids = at;
 1812                         *optsize = ((at * sizeof(sctp_assoc_t)) + sizeof(uint32_t));
 1813                 }
 1814                 break;
 1815         case SCTP_CONTEXT:
 1816                 {
 1817                         struct sctp_assoc_value *av;
 1818 
 1819                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
 1820                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
 1821 
 1822                         if (stcb) {
 1823                                 av->assoc_value = stcb->asoc.context;
 1824                                 SCTP_TCB_UNLOCK(stcb);
 1825                         } else {
 1826                                 SCTP_INP_RLOCK(inp);
 1827                                 av->assoc_value = inp->sctp_context;
 1828                                 SCTP_INP_RUNLOCK(inp);
 1829                         }
 1830                         *optsize = sizeof(*av);
 1831                 }
 1832                 break;
 1833         case SCTP_VRF_ID:
 1834                 {
 1835                         uint32_t *default_vrfid;
 1836 
 1837                         SCTP_CHECK_AND_CAST(default_vrfid, optval, uint32_t, *optsize);
 1838                         *default_vrfid = inp->def_vrf_id;
 1839                         break;
 1840                 }
 1841         case SCTP_GET_ASOC_VRF:
 1842                 {
 1843                         struct sctp_assoc_value *id;
 1844 
 1845                         SCTP_CHECK_AND_CAST(id, optval, struct sctp_assoc_value, *optsize);
 1846                         SCTP_FIND_STCB(inp, stcb, id->assoc_id);
 1847                         if (stcb == NULL) {
 1848                                 error = EINVAL;
 1849                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 1850                                 break;
 1851                         }
 1852                         id->assoc_value = stcb->asoc.vrf_id;
 1853                         break;
 1854                 }
 1855         case SCTP_GET_VRF_IDS:
 1856                 {
 1857                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
 1858                         error = EOPNOTSUPP;
 1859                         break;
 1860                 }
 1861         case SCTP_GET_NONCE_VALUES:
 1862                 {
 1863                         struct sctp_get_nonce_values *gnv;
 1864 
 1865                         SCTP_CHECK_AND_CAST(gnv, optval, struct sctp_get_nonce_values, *optsize);
 1866                         SCTP_FIND_STCB(inp, stcb, gnv->gn_assoc_id);
 1867 
 1868                         if (stcb) {
 1869                                 gnv->gn_peers_tag = stcb->asoc.peer_vtag;
 1870                                 gnv->gn_local_tag = stcb->asoc.my_vtag;
 1871                                 SCTP_TCB_UNLOCK(stcb);
 1872                         } else {
 1873                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
 1874                                 error = ENOTCONN;
 1875                         }
 1876                         *optsize = sizeof(*gnv);
 1877                 }
 1878                 break;
 1879         case SCTP_DELAYED_SACK:
 1880                 {
 1881                         struct sctp_sack_info *sack;
 1882 
 1883                         SCTP_CHECK_AND_CAST(sack, optval, struct sctp_sack_info, *optsize);
 1884                         SCTP_FIND_STCB(inp, stcb, sack->sack_assoc_id);
 1885                         if (stcb) {
 1886                                 sack->sack_delay = stcb->asoc.delayed_ack;
 1887                                 sack->sack_freq = stcb->asoc.sack_freq;
 1888                                 SCTP_TCB_UNLOCK(stcb);
 1889                         } else {
 1890                                 SCTP_INP_RLOCK(inp);
 1891                                 sack->sack_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
 1892                                 sack->sack_freq = inp->sctp_ep.sctp_sack_freq;
 1893                                 SCTP_INP_RUNLOCK(inp);
 1894                         }
 1895                         *optsize = sizeof(*sack);
 1896                 }
 1897                 break;
 1898 
 1899         case SCTP_GET_SNDBUF_USE:
 1900                 {
 1901                         struct sctp_sockstat *ss;
 1902 
 1903                         SCTP_CHECK_AND_CAST(ss, optval, struct sctp_sockstat, *optsize);
 1904                         SCTP_FIND_STCB(inp, stcb, ss->ss_assoc_id);
 1905 
 1906                         if (stcb) {
 1907                                 ss->ss_total_sndbuf = stcb->asoc.total_output_queue_size;
 1908                                 ss->ss_total_recv_buf = (stcb->asoc.size_on_reasm_queue +
 1909                                     stcb->asoc.size_on_all_streams);
 1910                                 SCTP_TCB_UNLOCK(stcb);
 1911                         } else {
 1912                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
 1913                                 error = ENOTCONN;
 1914                         }
 1915                         *optsize = sizeof(struct sctp_sockstat);
 1916                 }
 1917                 break;
 1918         case SCTP_MAX_BURST:
 1919                 {
 1920                         uint8_t *value;
 1921 
 1922                         SCTP_CHECK_AND_CAST(value, optval, uint8_t, *optsize);
 1923 
 1924                         SCTP_INP_RLOCK(inp);
 1925                         *value = inp->sctp_ep.max_burst;
 1926                         SCTP_INP_RUNLOCK(inp);
 1927                         *optsize = sizeof(uint8_t);
 1928                 }
 1929                 break;
 1930         case SCTP_MAXSEG:
 1931                 {
 1932                         struct sctp_assoc_value *av;
 1933                         int ovh;
 1934 
 1935                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, *optsize);
 1936                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
 1937 
 1938                         if (stcb) {
 1939                                 av->assoc_value = sctp_get_frag_point(stcb, &stcb->asoc);
 1940                                 SCTP_TCB_UNLOCK(stcb);
 1941                         } else {
 1942                                 SCTP_INP_RLOCK(inp);
 1943                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
 1944                                         ovh = SCTP_MED_OVERHEAD;
 1945                                 } else {
 1946                                         ovh = SCTP_MED_V4_OVERHEAD;
 1947                                 }
 1948                                 if (inp->sctp_frag_point >= SCTP_DEFAULT_MAXSEGMENT)
 1949                                         av->assoc_value = 0;
 1950                                 else
 1951                                         av->assoc_value = inp->sctp_frag_point - ovh;
 1952                                 SCTP_INP_RUNLOCK(inp);
 1953                         }
 1954                         *optsize = sizeof(struct sctp_assoc_value);
 1955                 }
 1956                 break;
 1957         case SCTP_GET_STAT_LOG:
 1958                 error = sctp_fill_stat_log(optval, optsize);
 1959                 break;
 1960         case SCTP_EVENTS:
 1961                 {
 1962                         struct sctp_event_subscribe *events;
 1963 
 1964                         SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, *optsize);
 1965                         memset(events, 0, sizeof(*events));
 1966                         SCTP_INP_RLOCK(inp);
 1967                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT))
 1968                                 events->sctp_data_io_event = 1;
 1969 
 1970                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT))
 1971                                 events->sctp_association_event = 1;
 1972 
 1973                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT))
 1974                                 events->sctp_address_event = 1;
 1975 
 1976                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT))
 1977                                 events->sctp_send_failure_event = 1;
 1978 
 1979                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR))
 1980                                 events->sctp_peer_error_event = 1;
 1981 
 1982                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT))
 1983                                 events->sctp_shutdown_event = 1;
 1984 
 1985                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT))
 1986                                 events->sctp_partial_delivery_event = 1;
 1987 
 1988                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT))
 1989                                 events->sctp_adaptation_layer_event = 1;
 1990 
 1991                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT))
 1992                                 events->sctp_authentication_event = 1;
 1993 
 1994                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_DRYEVNT))
 1995                                 events->sctp_sender_dry_event = 1;
 1996 
 1997                         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT))
 1998                                 events->sctp_stream_reset_events = 1;
 1999                         SCTP_INP_RUNLOCK(inp);
 2000                         *optsize = sizeof(struct sctp_event_subscribe);
 2001                 }
 2002                 break;
 2003 
 2004         case SCTP_ADAPTATION_LAYER:
 2005                 {
 2006                         uint32_t *value;
 2007 
 2008                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
 2009 
 2010                         SCTP_INP_RLOCK(inp);
 2011                         *value = inp->sctp_ep.adaptation_layer_indicator;
 2012                         SCTP_INP_RUNLOCK(inp);
 2013                         *optsize = sizeof(uint32_t);
 2014                 }
 2015                 break;
 2016         case SCTP_SET_INITIAL_DBG_SEQ:
 2017                 {
 2018                         uint32_t *value;
 2019 
 2020                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
 2021                         SCTP_INP_RLOCK(inp);
 2022                         *value = inp->sctp_ep.initial_sequence_debug;
 2023                         SCTP_INP_RUNLOCK(inp);
 2024                         *optsize = sizeof(uint32_t);
 2025                 }
 2026                 break;
 2027         case SCTP_GET_LOCAL_ADDR_SIZE:
 2028                 {
 2029                         uint32_t *value;
 2030 
 2031                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
 2032                         SCTP_INP_RLOCK(inp);
 2033                         *value = sctp_count_max_addresses(inp);
 2034                         SCTP_INP_RUNLOCK(inp);
 2035                         *optsize = sizeof(uint32_t);
 2036                 }
 2037                 break;
 2038         case SCTP_GET_REMOTE_ADDR_SIZE:
 2039                 {
 2040                         uint32_t *value;
 2041                         size_t size;
 2042                         struct sctp_nets *net;
 2043 
 2044                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, *optsize);
 2045                         /* FIXME MT: change to sctp_assoc_value? */
 2046                         SCTP_FIND_STCB(inp, stcb, (sctp_assoc_t) * value);
 2047 
 2048                         if (stcb) {
 2049                                 size = 0;
 2050                                 /* Count the sizes */
 2051                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 2052                                         if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) ||
 2053                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) {
 2054                                                 size += sizeof(struct sockaddr_in6);
 2055                                         } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) {
 2056                                                 size += sizeof(struct sockaddr_in);
 2057                                         } else {
 2058                                                 /* huh */
 2059                                                 break;
 2060                                         }
 2061                                 }
 2062                                 SCTP_TCB_UNLOCK(stcb);
 2063                                 *value = (uint32_t) size;
 2064                         } else {
 2065                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
 2066                                 error = ENOTCONN;
 2067                         }
 2068                         *optsize = sizeof(uint32_t);
 2069                 }
 2070                 break;
 2071         case SCTP_GET_PEER_ADDRESSES:
 2072                 /*
 2073                  * Get the address information, an array is passed in to
 2074                  * fill up we pack it.
 2075                  */
 2076                 {
 2077                         size_t cpsz, left;
 2078                         struct sockaddr_storage *sas;
 2079                         struct sctp_nets *net;
 2080                         struct sctp_getaddresses *saddr;
 2081 
 2082                         SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize);
 2083                         SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id);
 2084 
 2085                         if (stcb) {
 2086                                 left = (*optsize) - sizeof(struct sctp_getaddresses);
 2087                                 *optsize = sizeof(struct sctp_getaddresses);
 2088                                 sas = (struct sockaddr_storage *)&saddr->addr[0];
 2089 
 2090                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 2091                                         if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) ||
 2092                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET6)) {
 2093                                                 cpsz = sizeof(struct sockaddr_in6);
 2094                                         } else if (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET) {
 2095                                                 cpsz = sizeof(struct sockaddr_in);
 2096                                         } else {
 2097                                                 /* huh */
 2098                                                 break;
 2099                                         }
 2100                                         if (left < cpsz) {
 2101                                                 /* not enough room. */
 2102                                                 break;
 2103                                         }
 2104 #ifdef INET6
 2105                                         if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) &&
 2106                                             (((struct sockaddr *)&net->ro._l_addr)->sa_family == AF_INET)) {
 2107                                                 /* Must map the address */
 2108                                                 in6_sin_2_v4mapsin6((struct sockaddr_in *)&net->ro._l_addr,
 2109                                                     (struct sockaddr_in6 *)sas);
 2110                                         } else {
 2111 #endif
 2112                                                 memcpy(sas, &net->ro._l_addr, cpsz);
 2113 #ifdef INET6
 2114                                         }
 2115 #endif
 2116                                         ((struct sockaddr_in *)sas)->sin_port = stcb->rport;
 2117 
 2118                                         sas = (struct sockaddr_storage *)((caddr_t)sas + cpsz);
 2119                                         left -= cpsz;
 2120                                         *optsize += cpsz;
 2121                                 }
 2122                                 SCTP_TCB_UNLOCK(stcb);
 2123                         } else {
 2124                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
 2125                                 error = ENOENT;
 2126                         }
 2127                 }
 2128                 break;
 2129         case SCTP_GET_LOCAL_ADDRESSES:
 2130                 {
 2131                         size_t limit, actual;
 2132                         struct sockaddr_storage *sas;
 2133                         struct sctp_getaddresses *saddr;
 2134 
 2135                         SCTP_CHECK_AND_CAST(saddr, optval, struct sctp_getaddresses, *optsize);
 2136                         SCTP_FIND_STCB(inp, stcb, saddr->sget_assoc_id);
 2137 
 2138                         sas = (struct sockaddr_storage *)&saddr->addr[0];
 2139                         limit = *optsize - sizeof(sctp_assoc_t);
 2140                         actual = sctp_fill_up_addresses(inp, stcb, limit, sas);
 2141                         if (stcb) {
 2142                                 SCTP_TCB_UNLOCK(stcb);
 2143                         }
 2144                         *optsize = sizeof(struct sockaddr_storage) + actual;
 2145                 }
 2146                 break;
 2147         case SCTP_PEER_ADDR_PARAMS:
 2148                 {
 2149                         struct sctp_paddrparams *paddrp;
 2150                         struct sctp_nets *net;
 2151 
 2152                         SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, *optsize);
 2153                         SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id);
 2154 
 2155                         net = NULL;
 2156                         if (stcb) {
 2157                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address);
 2158                         } else {
 2159                                 /*
 2160                                  * We increment here since
 2161                                  * sctp_findassociation_ep_addr() wil do a
 2162                                  * decrement if it finds the stcb as long as
 2163                                  * the locked tcb (last argument) is NOT a
 2164                                  * TCB.. aka NULL.
 2165                                  */
 2166                                 SCTP_INP_INCR_REF(inp);
 2167                                 stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddrp->spp_address, &net, NULL, NULL);
 2168                                 if (stcb == NULL) {
 2169                                         SCTP_INP_DECR_REF(inp);
 2170                                 }
 2171                         }
 2172                         if (stcb && (net == NULL)) {
 2173                                 struct sockaddr *sa;
 2174 
 2175                                 sa = (struct sockaddr *)&paddrp->spp_address;
 2176                                 if (sa->sa_family == AF_INET) {
 2177                                         struct sockaddr_in *sin;
 2178 
 2179                                         sin = (struct sockaddr_in *)sa;
 2180                                         if (sin->sin_addr.s_addr) {
 2181                                                 error = EINVAL;
 2182                                                 SCTP_TCB_UNLOCK(stcb);
 2183                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 2184                                                 break;
 2185                                         }
 2186                                 } else if (sa->sa_family == AF_INET6) {
 2187                                         struct sockaddr_in6 *sin6;
 2188 
 2189                                         sin6 = (struct sockaddr_in6 *)sa;
 2190                                         if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
 2191                                                 error = EINVAL;
 2192                                                 SCTP_TCB_UNLOCK(stcb);
 2193                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 2194                                                 break;
 2195                                         }
 2196                                 } else {
 2197                                         error = EAFNOSUPPORT;
 2198                                         SCTP_TCB_UNLOCK(stcb);
 2199                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 2200                                         break;
 2201                                 }
 2202                         }
 2203                         if (stcb) {
 2204                                 /* Applys to the specific association */
 2205                                 paddrp->spp_flags = 0;
 2206                                 if (net) {
 2207                                         int ovh;
 2208 
 2209                                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
 2210                                                 ovh = SCTP_MED_OVERHEAD;
 2211                                         } else {
 2212                                                 ovh = SCTP_MED_V4_OVERHEAD;
 2213                                         }
 2214 
 2215 
 2216                                         paddrp->spp_pathmaxrxt = net->failure_threshold;
 2217                                         paddrp->spp_pathmtu = net->mtu - ovh;
 2218                                         /* get flags for HB */
 2219                                         if (net->dest_state & SCTP_ADDR_NOHB)
 2220                                                 paddrp->spp_flags |= SPP_HB_DISABLE;
 2221                                         else
 2222                                                 paddrp->spp_flags |= SPP_HB_ENABLE;
 2223                                         /* get flags for PMTU */
 2224                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
 2225                                                 paddrp->spp_flags |= SPP_PMTUD_ENABLE;
 2226                                         } else {
 2227                                                 paddrp->spp_flags |= SPP_PMTUD_DISABLE;
 2228                                         }
 2229 #ifdef INET
 2230                                         if (net->ro._l_addr.sin.sin_family == AF_INET) {
 2231                                                 paddrp->spp_ipv4_tos = net->tos_flowlabel & 0x000000fc;
 2232                                                 paddrp->spp_flags |= SPP_IPV4_TOS;
 2233                                         }
 2234 #endif
 2235 #ifdef INET6
 2236                                         if (net->ro._l_addr.sin6.sin6_family == AF_INET6) {
 2237                                                 paddrp->spp_ipv6_flowlabel = net->tos_flowlabel;
 2238                                                 paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
 2239                                         }
 2240 #endif
 2241                                 } else {
 2242                                         /*
 2243                                          * No destination so return default
 2244                                          * value
 2245                                          */
 2246                                         int cnt = 0;
 2247 
 2248                                         paddrp->spp_pathmaxrxt = stcb->asoc.def_net_failure;
 2249                                         paddrp->spp_pathmtu = sctp_get_frag_point(stcb, &stcb->asoc);
 2250 #ifdef INET
 2251                                         paddrp->spp_ipv4_tos = stcb->asoc.default_tos & 0x000000fc;
 2252                                         paddrp->spp_flags |= SPP_IPV4_TOS;
 2253 #endif
 2254 #ifdef INET6
 2255                                         paddrp->spp_ipv6_flowlabel = stcb->asoc.default_flowlabel;
 2256                                         paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
 2257 #endif
 2258                                         /* default settings should be these */
 2259                                         if (stcb->asoc.hb_is_disabled == 0) {
 2260                                                 paddrp->spp_flags |= SPP_HB_ENABLE;
 2261                                         } else {
 2262                                                 paddrp->spp_flags |= SPP_HB_DISABLE;
 2263                                         }
 2264                                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 2265                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
 2266                                                         cnt++;
 2267                                                 }
 2268                                         }
 2269                                         if (cnt) {
 2270                                                 paddrp->spp_flags |= SPP_PMTUD_ENABLE;
 2271                                         }
 2272                                 }
 2273                                 paddrp->spp_hbinterval = stcb->asoc.heart_beat_delay;
 2274                                 paddrp->spp_assoc_id = sctp_get_associd(stcb);
 2275                                 SCTP_TCB_UNLOCK(stcb);
 2276                         } else {
 2277                                 /* Use endpoint defaults */
 2278                                 SCTP_INP_RLOCK(inp);
 2279                                 paddrp->spp_pathmaxrxt = inp->sctp_ep.def_net_failure;
 2280                                 paddrp->spp_hbinterval = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
 2281                                 paddrp->spp_assoc_id = (sctp_assoc_t) 0;
 2282                                 /* get inp's default */
 2283 #ifdef INET
 2284                                 paddrp->spp_ipv4_tos = inp->ip_inp.inp.inp_ip_tos;
 2285                                 paddrp->spp_flags |= SPP_IPV4_TOS;
 2286 #endif
 2287 #ifdef INET6
 2288                                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
 2289                                         paddrp->spp_ipv6_flowlabel = ((struct in6pcb *)inp)->in6p_flowinfo;
 2290                                         paddrp->spp_flags |= SPP_IPV6_FLOWLABEL;
 2291                                 }
 2292 #endif
 2293                                 /* can't return this */
 2294                                 paddrp->spp_pathmtu = 0;
 2295 
 2296                                 /* default behavior, no stcb */
 2297                                 paddrp->spp_flags = SPP_PMTUD_ENABLE;
 2298 
 2299                                 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
 2300                                         paddrp->spp_flags |= SPP_HB_ENABLE;
 2301                                 } else {
 2302                                         paddrp->spp_flags |= SPP_HB_DISABLE;
 2303                                 }
 2304                                 SCTP_INP_RUNLOCK(inp);
 2305                         }
 2306                         *optsize = sizeof(struct sctp_paddrparams);
 2307                 }
 2308                 break;
 2309         case SCTP_GET_PEER_ADDR_INFO:
 2310                 {
 2311                         struct sctp_paddrinfo *paddri;
 2312                         struct sctp_nets *net;
 2313 
 2314                         SCTP_CHECK_AND_CAST(paddri, optval, struct sctp_paddrinfo, *optsize);
 2315                         SCTP_FIND_STCB(inp, stcb, paddri->spinfo_assoc_id);
 2316 
 2317                         net = NULL;
 2318                         if (stcb) {
 2319                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddri->spinfo_address);
 2320                         } else {
 2321                                 /*
 2322                                  * We increment here since
 2323                                  * sctp_findassociation_ep_addr() wil do a
 2324                                  * decrement if it finds the stcb as long as
 2325                                  * the locked tcb (last argument) is NOT a
 2326                                  * TCB.. aka NULL.
 2327                                  */
 2328                                 SCTP_INP_INCR_REF(inp);
 2329                                 stcb = sctp_findassociation_ep_addr(&inp, (struct sockaddr *)&paddri->spinfo_address, &net, NULL, NULL);
 2330                                 if (stcb == NULL) {
 2331                                         SCTP_INP_DECR_REF(inp);
 2332                                 }
 2333                         }
 2334 
 2335                         if ((stcb) && (net)) {
 2336                                 paddri->spinfo_state = net->dest_state & (SCTP_REACHABLE_MASK | SCTP_ADDR_NOHB);
 2337                                 paddri->spinfo_cwnd = net->cwnd;
 2338                                 paddri->spinfo_srtt = ((net->lastsa >> 2) + net->lastsv) >> 1;
 2339                                 paddri->spinfo_rto = net->RTO;
 2340                                 paddri->spinfo_assoc_id = sctp_get_associd(stcb);
 2341                                 SCTP_TCB_UNLOCK(stcb);
 2342                         } else {
 2343                                 if (stcb) {
 2344                                         SCTP_TCB_UNLOCK(stcb);
 2345                                 }
 2346                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
 2347                                 error = ENOENT;
 2348                         }
 2349                         *optsize = sizeof(struct sctp_paddrinfo);
 2350                 }
 2351                 break;
 2352         case SCTP_PCB_STATUS:
 2353                 {
 2354                         struct sctp_pcbinfo *spcb;
 2355 
 2356                         SCTP_CHECK_AND_CAST(spcb, optval, struct sctp_pcbinfo, *optsize);
 2357                         sctp_fill_pcbinfo(spcb);
 2358                         *optsize = sizeof(struct sctp_pcbinfo);
 2359                 }
 2360                 break;
 2361 
 2362         case SCTP_STATUS:
 2363                 {
 2364                         struct sctp_nets *net;
 2365                         struct sctp_status *sstat;
 2366 
 2367                         SCTP_CHECK_AND_CAST(sstat, optval, struct sctp_status, *optsize);
 2368                         SCTP_FIND_STCB(inp, stcb, sstat->sstat_assoc_id);
 2369 
 2370                         if (stcb == NULL) {
 2371                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 2372                                 error = EINVAL;
 2373                                 break;
 2374                         }
 2375                         /*
 2376                          * I think passing the state is fine since
 2377                          * sctp_constants.h will be available to the user
 2378                          * land.
 2379                          */
 2380                         sstat->sstat_state = stcb->asoc.state;
 2381                         sstat->sstat_assoc_id = sctp_get_associd(stcb);
 2382                         sstat->sstat_rwnd = stcb->asoc.peers_rwnd;
 2383                         sstat->sstat_unackdata = stcb->asoc.sent_queue_cnt;
 2384                         /*
 2385                          * We can't include chunks that have been passed to
 2386                          * the socket layer. Only things in queue.
 2387                          */
 2388                         sstat->sstat_penddata = (stcb->asoc.cnt_on_reasm_queue +
 2389                             stcb->asoc.cnt_on_all_streams);
 2390 
 2391 
 2392                         sstat->sstat_instrms = stcb->asoc.streamincnt;
 2393                         sstat->sstat_outstrms = stcb->asoc.streamoutcnt;
 2394                         sstat->sstat_fragmentation_point = sctp_get_frag_point(stcb, &stcb->asoc);
 2395                         memcpy(&sstat->sstat_primary.spinfo_address,
 2396                             &stcb->asoc.primary_destination->ro._l_addr,
 2397                             ((struct sockaddr *)(&stcb->asoc.primary_destination->ro._l_addr))->sa_len);
 2398                         net = stcb->asoc.primary_destination;
 2399                         ((struct sockaddr_in *)&sstat->sstat_primary.spinfo_address)->sin_port = stcb->rport;
 2400                         /*
 2401                          * Again the user can get info from sctp_constants.h
 2402                          * for what the state of the network is.
 2403                          */
 2404                         sstat->sstat_primary.spinfo_state = net->dest_state & SCTP_REACHABLE_MASK;
 2405                         sstat->sstat_primary.spinfo_cwnd = net->cwnd;
 2406                         sstat->sstat_primary.spinfo_srtt = net->lastsa;
 2407                         sstat->sstat_primary.spinfo_rto = net->RTO;
 2408                         sstat->sstat_primary.spinfo_mtu = net->mtu;
 2409                         sstat->sstat_primary.spinfo_assoc_id = sctp_get_associd(stcb);
 2410                         SCTP_TCB_UNLOCK(stcb);
 2411                         *optsize = sizeof(*sstat);
 2412                 }
 2413                 break;
 2414         case SCTP_RTOINFO:
 2415                 {
 2416                         struct sctp_rtoinfo *srto;
 2417 
 2418                         SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, *optsize);
 2419                         SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id);
 2420 
 2421                         if (stcb) {
 2422                                 srto->srto_initial = stcb->asoc.initial_rto;
 2423                                 srto->srto_max = stcb->asoc.maxrto;
 2424                                 srto->srto_min = stcb->asoc.minrto;
 2425                                 SCTP_TCB_UNLOCK(stcb);
 2426                         } else {
 2427                                 SCTP_INP_RLOCK(inp);
 2428                                 srto->srto_initial = inp->sctp_ep.initial_rto;
 2429                                 srto->srto_max = inp->sctp_ep.sctp_maxrto;
 2430                                 srto->srto_min = inp->sctp_ep.sctp_minrto;
 2431                                 SCTP_INP_RUNLOCK(inp);
 2432                         }
 2433                         *optsize = sizeof(*srto);
 2434                 }
 2435                 break;
 2436         case SCTP_ASSOCINFO:
 2437                 {
 2438                         struct sctp_assocparams *sasoc;
 2439                         uint32_t oldval;
 2440 
 2441                         SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, *optsize);
 2442                         SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id);
 2443 
 2444                         if (stcb) {
 2445                                 oldval = sasoc->sasoc_cookie_life;
 2446                                 sasoc->sasoc_cookie_life = TICKS_TO_MSEC(stcb->asoc.cookie_life);
 2447                                 sasoc->sasoc_asocmaxrxt = stcb->asoc.max_send_times;
 2448                                 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets;
 2449                                 sasoc->sasoc_peer_rwnd = stcb->asoc.peers_rwnd;
 2450                                 sasoc->sasoc_local_rwnd = stcb->asoc.my_rwnd;
 2451                                 SCTP_TCB_UNLOCK(stcb);
 2452                         } else {
 2453                                 SCTP_INP_RLOCK(inp);
 2454                                 sasoc->sasoc_cookie_life = TICKS_TO_MSEC(inp->sctp_ep.def_cookie_life);
 2455                                 sasoc->sasoc_asocmaxrxt = inp->sctp_ep.max_send_times;
 2456                                 sasoc->sasoc_number_peer_destinations = 0;
 2457                                 sasoc->sasoc_peer_rwnd = 0;
 2458                                 sasoc->sasoc_local_rwnd = sbspace(&inp->sctp_socket->so_rcv);
 2459                                 SCTP_INP_RUNLOCK(inp);
 2460                         }
 2461                         *optsize = sizeof(*sasoc);
 2462                 }
 2463                 break;
 2464         case SCTP_DEFAULT_SEND_PARAM:
 2465                 {
 2466                         struct sctp_sndrcvinfo *s_info;
 2467 
 2468                         SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, *optsize);
 2469                         SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id);
 2470 
 2471                         if (stcb) {
 2472                                 memcpy(s_info, &stcb->asoc.def_send, sizeof(stcb->asoc.def_send));
 2473                                 SCTP_TCB_UNLOCK(stcb);
 2474                         } else {
 2475                                 SCTP_INP_RLOCK(inp);
 2476                                 memcpy(s_info, &inp->def_send, sizeof(inp->def_send));
 2477                                 SCTP_INP_RUNLOCK(inp);
 2478                         }
 2479                         *optsize = sizeof(*s_info);
 2480                 }
 2481                 break;
 2482         case SCTP_INITMSG:
 2483                 {
 2484                         struct sctp_initmsg *sinit;
 2485 
 2486                         SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, *optsize);
 2487                         SCTP_INP_RLOCK(inp);
 2488                         sinit->sinit_num_ostreams = inp->sctp_ep.pre_open_stream_count;
 2489                         sinit->sinit_max_instreams = inp->sctp_ep.max_open_streams_intome;
 2490                         sinit->sinit_max_attempts = inp->sctp_ep.max_init_times;
 2491                         sinit->sinit_max_init_timeo = inp->sctp_ep.initial_init_rto_max;
 2492                         SCTP_INP_RUNLOCK(inp);
 2493                         *optsize = sizeof(*sinit);
 2494                 }
 2495                 break;
 2496         case SCTP_PRIMARY_ADDR:
 2497                 /* we allow a "get" operation on this */
 2498                 {
 2499                         struct sctp_setprim *ssp;
 2500 
 2501                         SCTP_CHECK_AND_CAST(ssp, optval, struct sctp_setprim, *optsize);
 2502                         SCTP_FIND_STCB(inp, stcb, ssp->ssp_assoc_id);
 2503 
 2504                         if (stcb) {
 2505                                 /* simply copy out the sockaddr_storage... */
 2506                                 int len;
 2507 
 2508                                 len = *optsize;
 2509                                 if (len > stcb->asoc.primary_destination->ro._l_addr.sa.sa_len)
 2510                                         len = stcb->asoc.primary_destination->ro._l_addr.sa.sa_len;
 2511 
 2512                                 memcpy(&ssp->ssp_addr,
 2513                                     &stcb->asoc.primary_destination->ro._l_addr,
 2514                                     len);
 2515                                 SCTP_TCB_UNLOCK(stcb);
 2516                         } else {
 2517                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 2518                                 error = EINVAL;
 2519                         }
 2520                         *optsize = sizeof(*ssp);
 2521                 }
 2522                 break;
 2523 
 2524         case SCTP_HMAC_IDENT:
 2525                 {
 2526                         struct sctp_hmacalgo *shmac;
 2527                         sctp_hmaclist_t *hmaclist;
 2528                         uint32_t size;
 2529                         int i;
 2530 
 2531                         SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, *optsize);
 2532 
 2533                         SCTP_INP_RLOCK(inp);
 2534                         hmaclist = inp->sctp_ep.local_hmacs;
 2535                         if (hmaclist == NULL) {
 2536                                 /* no HMACs to return */
 2537                                 *optsize = sizeof(*shmac);
 2538                                 SCTP_INP_RUNLOCK(inp);
 2539                                 break;
 2540                         }
 2541                         /* is there room for all of the hmac ids? */
 2542                         size = sizeof(*shmac) + (hmaclist->num_algo *
 2543                             sizeof(shmac->shmac_idents[0]));
 2544                         if ((size_t)(*optsize) < size) {
 2545                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 2546                                 error = EINVAL;
 2547                                 SCTP_INP_RUNLOCK(inp);
 2548                                 break;
 2549                         }
 2550                         /* copy in the list */
 2551                         shmac->shmac_number_of_idents = hmaclist->num_algo;
 2552                         for (i = 0; i < hmaclist->num_algo; i++) {
 2553                                 shmac->shmac_idents[i] = hmaclist->hmac[i];
 2554                         }
 2555                         SCTP_INP_RUNLOCK(inp);
 2556                         *optsize = size;
 2557                         break;
 2558                 }
 2559         case SCTP_AUTH_ACTIVE_KEY:
 2560                 {
 2561                         struct sctp_authkeyid *scact;
 2562 
 2563                         SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid, *optsize);
 2564                         SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id);
 2565 
 2566                         if (stcb) {
 2567                                 /* get the active key on the assoc */
 2568                                 scact->scact_keynumber = stcb->asoc.authinfo.active_keyid;
 2569                                 SCTP_TCB_UNLOCK(stcb);
 2570                         } else {
 2571                                 /* get the endpoint active key */
 2572                                 SCTP_INP_RLOCK(inp);
 2573                                 scact->scact_keynumber = inp->sctp_ep.default_keyid;
 2574                                 SCTP_INP_RUNLOCK(inp);
 2575                         }
 2576                         *optsize = sizeof(*scact);
 2577                         break;
 2578                 }
 2579         case SCTP_LOCAL_AUTH_CHUNKS:
 2580                 {
 2581                         struct sctp_authchunks *sac;
 2582                         sctp_auth_chklist_t *chklist = NULL;
 2583                         size_t size = 0;
 2584 
 2585                         SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize);
 2586                         SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id);
 2587 
 2588                         if (stcb) {
 2589                                 /* get off the assoc */
 2590                                 chklist = stcb->asoc.local_auth_chunks;
 2591                                 /* is there enough space? */
 2592                                 size = sctp_auth_get_chklist_size(chklist);
 2593                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
 2594                                         error = EINVAL;
 2595                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 2596                                 } else {
 2597                                         /* copy in the chunks */
 2598                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
 2599                                 }
 2600                                 SCTP_TCB_UNLOCK(stcb);
 2601                         } else {
 2602                                 /* get off the endpoint */
 2603                                 SCTP_INP_RLOCK(inp);
 2604                                 chklist = inp->sctp_ep.local_auth_chunks;
 2605                                 /* is there enough space? */
 2606                                 size = sctp_auth_get_chklist_size(chklist);
 2607                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
 2608                                         error = EINVAL;
 2609                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 2610                                 } else {
 2611                                         /* copy in the chunks */
 2612                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
 2613                                 }
 2614                                 SCTP_INP_RUNLOCK(inp);
 2615                         }
 2616                         *optsize = sizeof(struct sctp_authchunks) + size;
 2617                         break;
 2618                 }
 2619         case SCTP_PEER_AUTH_CHUNKS:
 2620                 {
 2621                         struct sctp_authchunks *sac;
 2622                         sctp_auth_chklist_t *chklist = NULL;
 2623                         size_t size = 0;
 2624 
 2625                         SCTP_CHECK_AND_CAST(sac, optval, struct sctp_authchunks, *optsize);
 2626                         SCTP_FIND_STCB(inp, stcb, sac->gauth_assoc_id);
 2627 
 2628                         if (stcb) {
 2629                                 /* get off the assoc */
 2630                                 chklist = stcb->asoc.peer_auth_chunks;
 2631                                 /* is there enough space? */
 2632                                 size = sctp_auth_get_chklist_size(chklist);
 2633                                 if (*optsize < (sizeof(struct sctp_authchunks) + size)) {
 2634                                         error = EINVAL;
 2635                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 2636                                 } else {
 2637                                         /* copy in the chunks */
 2638                                         (void)sctp_serialize_auth_chunks(chklist, sac->gauth_chunks);
 2639                                 }
 2640                                 SCTP_TCB_UNLOCK(stcb);
 2641                         } else {
 2642                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
 2643                                 error = ENOENT;
 2644                         }
 2645                         *optsize = sizeof(struct sctp_authchunks) + size;
 2646                         break;
 2647                 }
 2648 
 2649 
 2650         default:
 2651                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
 2652                 error = ENOPROTOOPT;
 2653                 *optsize = 0;
 2654                 break;
 2655         }                       /* end switch (sopt->sopt_name) */
 2656         return (error);
 2657 }
 2658 
 2659 static int
 2660 sctp_setopt(struct socket *so, int optname, void *optval, size_t optsize,
 2661     void *p)
 2662 {
 2663         int error, set_opt;
 2664         uint32_t *mopt;
 2665         struct sctp_tcb *stcb = NULL;
 2666         struct sctp_inpcb *inp = NULL;
 2667         uint32_t vrf_id;
 2668 
 2669         if (optval == NULL) {
 2670                 SCTP_PRINTF("optval is NULL\n");
 2671                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 2672                 return (EINVAL);
 2673         }
 2674         inp = (struct sctp_inpcb *)so->so_pcb;
 2675         if (inp == 0) {
 2676                 SCTP_PRINTF("inp is NULL?\n");
 2677                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 2678                 return EINVAL;
 2679         }
 2680         vrf_id = inp->def_vrf_id;
 2681 
 2682         error = 0;
 2683         switch (optname) {
 2684         case SCTP_NODELAY:
 2685         case SCTP_AUTOCLOSE:
 2686         case SCTP_AUTO_ASCONF:
 2687         case SCTP_EXPLICIT_EOR:
 2688         case SCTP_DISABLE_FRAGMENTS:
 2689         case SCTP_USE_EXT_RCVINFO:
 2690         case SCTP_I_WANT_MAPPED_V4_ADDR:
 2691                 /* copy in the option value */
 2692                 SCTP_CHECK_AND_CAST(mopt, optval, uint32_t, optsize);
 2693                 set_opt = 0;
 2694                 if (error)
 2695                         break;
 2696                 switch (optname) {
 2697                 case SCTP_DISABLE_FRAGMENTS:
 2698                         set_opt = SCTP_PCB_FLAGS_NO_FRAGMENT;
 2699                         break;
 2700                 case SCTP_AUTO_ASCONF:
 2701                         /*
 2702                          * NOTE: we don't really support this flag
 2703                          */
 2704                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
 2705                                 /* only valid for bound all sockets */
 2706                                 set_opt = SCTP_PCB_FLAGS_AUTO_ASCONF;
 2707                         } else {
 2708                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 2709                                 return (EINVAL);
 2710                         }
 2711                         break;
 2712                 case SCTP_EXPLICIT_EOR:
 2713                         set_opt = SCTP_PCB_FLAGS_EXPLICIT_EOR;
 2714                         break;
 2715                 case SCTP_USE_EXT_RCVINFO:
 2716                         set_opt = SCTP_PCB_FLAGS_EXT_RCVINFO;
 2717                         break;
 2718                 case SCTP_I_WANT_MAPPED_V4_ADDR:
 2719                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
 2720                                 set_opt = SCTP_PCB_FLAGS_NEEDS_MAPPED_V4;
 2721                         } else {
 2722                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 2723                                 return (EINVAL);
 2724                         }
 2725                         break;
 2726                 case SCTP_NODELAY:
 2727                         set_opt = SCTP_PCB_FLAGS_NODELAY;
 2728                         break;
 2729                 case SCTP_AUTOCLOSE:
 2730                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
 2731                             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
 2732                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 2733                                 return (EINVAL);
 2734                         }
 2735                         set_opt = SCTP_PCB_FLAGS_AUTOCLOSE;
 2736                         /*
 2737                          * The value is in ticks. Note this does not effect
 2738                          * old associations, only new ones.
 2739                          */
 2740                         inp->sctp_ep.auto_close_time = SEC_TO_TICKS(*mopt);
 2741                         break;
 2742                 }
 2743                 SCTP_INP_WLOCK(inp);
 2744                 if (*mopt != 0) {
 2745                         sctp_feature_on(inp, set_opt);
 2746                 } else {
 2747                         sctp_feature_off(inp, set_opt);
 2748                 }
 2749                 SCTP_INP_WUNLOCK(inp);
 2750                 break;
 2751         case SCTP_REUSE_PORT:
 2752                 {
 2753                         SCTP_CHECK_AND_CAST(mopt, optval, uint32_t, optsize);
 2754                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
 2755                                 /* Can't set it after we are bound */
 2756                                 error = EINVAL;
 2757                                 break;
 2758                         }
 2759                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE)) {
 2760                                 /* Can't do this for a 1-m socket */
 2761                                 error = EINVAL;
 2762                                 break;
 2763                         }
 2764                         if (optval)
 2765                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE);
 2766                         else
 2767                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE);
 2768                 }
 2769                 break;
 2770         case SCTP_PARTIAL_DELIVERY_POINT:
 2771                 {
 2772                         uint32_t *value;
 2773 
 2774                         SCTP_CHECK_AND_CAST(value, optval, uint32_t, optsize);
 2775                         if (*value > SCTP_SB_LIMIT_RCV(so)) {
 2776                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 2777                                 error = EINVAL;
 2778                                 break;
 2779                         }
 2780                         inp->partial_delivery_point = *value;
 2781                 }
 2782                 break;
 2783         case SCTP_FRAGMENT_INTERLEAVE:
 2784                 /* not yet until we re-write sctp_recvmsg() */
 2785                 {
 2786                         uint32_t *level;
 2787 
 2788                         SCTP_CHECK_AND_CAST(level, optval, uint32_t, optsize);
 2789                         if (*level == SCTP_FRAG_LEVEL_2) {
 2790                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
 2791                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
 2792                         } else if (*level == SCTP_FRAG_LEVEL_1) {
 2793                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
 2794                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
 2795                         } else if (*level == SCTP_FRAG_LEVEL_0) {
 2796                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
 2797                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
 2798 
 2799                         } else {
 2800                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 2801                                 error = EINVAL;
 2802                         }
 2803                 }
 2804                 break;
 2805         case SCTP_CMT_ON_OFF:
 2806                 {
 2807                         struct sctp_assoc_value *av;
 2808 
 2809                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
 2810                         if (SCTP_BASE_SYSCTL(sctp_cmt_on_off)) {
 2811                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
 2812                                 if (stcb) {
 2813                                         stcb->asoc.sctp_cmt_on_off = (uint8_t) av->assoc_value;
 2814                                         SCTP_TCB_UNLOCK(stcb);
 2815                                 } else {
 2816                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
 2817                                         error = ENOTCONN;
 2818                                 }
 2819                         } else {
 2820                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
 2821                                 error = ENOPROTOOPT;
 2822                         }
 2823                 }
 2824                 break;
 2825                 /* EY nr_sack_on_off socket option */
 2826         case SCTP_NR_SACK_ON_OFF:
 2827                 {
 2828                         struct sctp_assoc_value *av;
 2829 
 2830                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
 2831                         if (SCTP_BASE_SYSCTL(sctp_nr_sack_on_off)) {
 2832                                 SCTP_FIND_STCB(inp, stcb, av->assoc_id);
 2833                                 if (stcb) {
 2834                                         stcb->asoc.sctp_nr_sack_on_off = (uint8_t) av->assoc_value;
 2835                                         SCTP_TCB_UNLOCK(stcb);
 2836                                 } else {
 2837                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
 2838                                         error = ENOTCONN;
 2839                                 }
 2840                         } else {
 2841                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
 2842                                 error = ENOPROTOOPT;
 2843                         }
 2844                 }
 2845                 break;
 2846                 /* JRS - Set socket option for pluggable congestion control */
 2847         case SCTP_PLUGGABLE_CC:
 2848                 {
 2849                         struct sctp_assoc_value *av;
 2850 
 2851                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
 2852                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
 2853                         if (stcb) {
 2854                                 switch (av->assoc_value) {
 2855                                         /*
 2856                                          * JRS - Standard TCP congestion
 2857                                          * control
 2858                                          */
 2859                                 case SCTP_CC_RFC2581:
 2860                                         {
 2861                                                 stcb->asoc.congestion_control_module = SCTP_CC_RFC2581;
 2862                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_set_initial_cc_param;
 2863                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_cwnd_update_after_sack;
 2864                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_cwnd_update_after_fr;
 2865                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_cwnd_update_after_timeout;
 2866                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_cwnd_update_after_ecn_echo;
 2867                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
 2868                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
 2869                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_cwnd_update_after_fr_timer;
 2870                                                 SCTP_TCB_UNLOCK(stcb);
 2871                                                 break;
 2872                                         }
 2873                                         /*
 2874                                          * JRS - High Speed TCP congestion
 2875                                          * control (Floyd)
 2876                                          */
 2877                                 case SCTP_CC_HSTCP:
 2878                                         {
 2879                                                 stcb->asoc.congestion_control_module = SCTP_CC_HSTCP;
 2880                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_set_initial_cc_param;
 2881                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_hs_cwnd_update_after_sack;
 2882                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_hs_cwnd_update_after_fr;
 2883                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_cwnd_update_after_timeout;
 2884                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_cwnd_update_after_ecn_echo;
 2885                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
 2886                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
 2887                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_cwnd_update_after_fr_timer;
 2888                                                 SCTP_TCB_UNLOCK(stcb);
 2889                                                 break;
 2890                                         }
 2891                                         /* JRS - HTCP congestion control */
 2892                                 case SCTP_CC_HTCP:
 2893                                         {
 2894                                                 stcb->asoc.congestion_control_module = SCTP_CC_HTCP;
 2895                                                 stcb->asoc.cc_functions.sctp_set_initial_cc_param = &sctp_htcp_set_initial_cc_param;
 2896                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_sack = &sctp_htcp_cwnd_update_after_sack;
 2897                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr = &sctp_htcp_cwnd_update_after_fr;
 2898                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_timeout = &sctp_htcp_cwnd_update_after_timeout;
 2899                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_ecn_echo = &sctp_htcp_cwnd_update_after_ecn_echo;
 2900                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_packet_dropped = &sctp_cwnd_update_after_packet_dropped;
 2901                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_output = &sctp_cwnd_update_after_output;
 2902                                                 stcb->asoc.cc_functions.sctp_cwnd_update_after_fr_timer = &sctp_htcp_cwnd_update_after_fr_timer;
 2903                                                 SCTP_TCB_UNLOCK(stcb);
 2904                                                 break;
 2905                                         }
 2906                                         /*
 2907                                          * JRS - All other values are
 2908                                          * invalid
 2909                                          */
 2910                                 default:
 2911                                         {
 2912                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 2913                                                 error = EINVAL;
 2914                                                 SCTP_TCB_UNLOCK(stcb);
 2915                                                 break;
 2916                                         }
 2917                                 }
 2918                         } else {
 2919                                 switch (av->assoc_value) {
 2920                                 case SCTP_CC_RFC2581:
 2921                                 case SCTP_CC_HSTCP:
 2922                                 case SCTP_CC_HTCP:
 2923                                         inp->sctp_ep.sctp_default_cc_module = av->assoc_value;
 2924                                         break;
 2925                                 default:
 2926                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 2927                                         error = EINVAL;
 2928                                         break;
 2929                                 };
 2930                         }
 2931                 }
 2932                 break;
 2933         case SCTP_CLR_STAT_LOG:
 2934                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
 2935                 error = EOPNOTSUPP;
 2936                 break;
 2937         case SCTP_CONTEXT:
 2938                 {
 2939                         struct sctp_assoc_value *av;
 2940 
 2941                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
 2942                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
 2943 
 2944                         if (stcb) {
 2945                                 stcb->asoc.context = av->assoc_value;
 2946                                 SCTP_TCB_UNLOCK(stcb);
 2947                         } else {
 2948                                 SCTP_INP_WLOCK(inp);
 2949                                 inp->sctp_context = av->assoc_value;
 2950                                 SCTP_INP_WUNLOCK(inp);
 2951                         }
 2952                 }
 2953                 break;
 2954         case SCTP_VRF_ID:
 2955                 {
 2956                         uint32_t *default_vrfid;
 2957 
 2958                         SCTP_CHECK_AND_CAST(default_vrfid, optval, uint32_t, optsize);
 2959                         if (*default_vrfid > SCTP_MAX_VRF_ID) {
 2960                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 2961                                 error = EINVAL;
 2962                                 break;
 2963                         }
 2964                         inp->def_vrf_id = *default_vrfid;
 2965                         break;
 2966                 }
 2967         case SCTP_DEL_VRF_ID:
 2968                 {
 2969                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
 2970                         error = EOPNOTSUPP;
 2971                         break;
 2972                 }
 2973         case SCTP_ADD_VRF_ID:
 2974                 {
 2975                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
 2976                         error = EOPNOTSUPP;
 2977                         break;
 2978                 }
 2979         case SCTP_DELAYED_SACK:
 2980                 {
 2981                         struct sctp_sack_info *sack;
 2982 
 2983                         SCTP_CHECK_AND_CAST(sack, optval, struct sctp_sack_info, optsize);
 2984                         SCTP_FIND_STCB(inp, stcb, sack->sack_assoc_id);
 2985                         if (sack->sack_delay) {
 2986                                 if (sack->sack_delay > SCTP_MAX_SACK_DELAY)
 2987                                         sack->sack_delay = SCTP_MAX_SACK_DELAY;
 2988                         }
 2989                         if (stcb) {
 2990                                 if (sack->sack_delay) {
 2991                                         if (MSEC_TO_TICKS(sack->sack_delay) < 1) {
 2992                                                 sack->sack_delay = TICKS_TO_MSEC(1);
 2993                                         }
 2994                                         stcb->asoc.delayed_ack = sack->sack_delay;
 2995                                 }
 2996                                 if (sack->sack_freq) {
 2997                                         stcb->asoc.sack_freq = sack->sack_freq;
 2998                                 }
 2999                                 SCTP_TCB_UNLOCK(stcb);
 3000                         } else {
 3001                                 SCTP_INP_WLOCK(inp);
 3002                                 if (sack->sack_delay) {
 3003                                         if (MSEC_TO_TICKS(sack->sack_delay) < 1) {
 3004                                                 sack->sack_delay = TICKS_TO_MSEC(1);
 3005                                         }
 3006                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(sack->sack_delay);
 3007                                 }
 3008                                 if (sack->sack_freq) {
 3009                                         inp->sctp_ep.sctp_sack_freq = sack->sack_freq;
 3010                                 }
 3011                                 SCTP_INP_WUNLOCK(inp);
 3012                         }
 3013                         break;
 3014                 }
 3015         case SCTP_AUTH_CHUNK:
 3016                 {
 3017                         struct sctp_authchunk *sauth;
 3018 
 3019                         SCTP_CHECK_AND_CAST(sauth, optval, struct sctp_authchunk, optsize);
 3020 
 3021                         SCTP_INP_WLOCK(inp);
 3022                         if (sctp_auth_add_chunk(sauth->sauth_chunk, inp->sctp_ep.local_auth_chunks)) {
 3023                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3024                                 error = EINVAL;
 3025                         }
 3026                         SCTP_INP_WUNLOCK(inp);
 3027                         break;
 3028                 }
 3029         case SCTP_AUTH_KEY:
 3030                 {
 3031                         struct sctp_authkey *sca;
 3032                         struct sctp_keyhead *shared_keys;
 3033                         sctp_sharedkey_t *shared_key;
 3034                         sctp_key_t *key = NULL;
 3035                         size_t size;
 3036 
 3037                         SCTP_CHECK_AND_CAST(sca, optval, struct sctp_authkey, optsize);
 3038                         SCTP_FIND_STCB(inp, stcb, sca->sca_assoc_id);
 3039                         size = optsize - sizeof(*sca);
 3040 
 3041                         if (stcb) {
 3042                                 /* set it on the assoc */
 3043                                 shared_keys = &stcb->asoc.shared_keys;
 3044                                 /* clear the cached keys for this key id */
 3045                                 sctp_clear_cachedkeys(stcb, sca->sca_keynumber);
 3046                                 /*
 3047                                  * create the new shared key and
 3048                                  * insert/replace it
 3049                                  */
 3050                                 if (size > 0) {
 3051                                         key = sctp_set_key(sca->sca_key, (uint32_t) size);
 3052                                         if (key == NULL) {
 3053                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
 3054                                                 error = ENOMEM;
 3055                                                 SCTP_TCB_UNLOCK(stcb);
 3056                                                 break;
 3057                                         }
 3058                                 }
 3059                                 shared_key = sctp_alloc_sharedkey();
 3060                                 if (shared_key == NULL) {
 3061                                         sctp_free_key(key);
 3062                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
 3063                                         error = ENOMEM;
 3064                                         SCTP_TCB_UNLOCK(stcb);
 3065                                         break;
 3066                                 }
 3067                                 shared_key->key = key;
 3068                                 shared_key->keyid = sca->sca_keynumber;
 3069                                 error = sctp_insert_sharedkey(shared_keys, shared_key);
 3070                                 SCTP_TCB_UNLOCK(stcb);
 3071                         } else {
 3072                                 /* set it on the endpoint */
 3073                                 SCTP_INP_WLOCK(inp);
 3074                                 shared_keys = &inp->sctp_ep.shared_keys;
 3075                                 /*
 3076                                  * clear the cached keys on all assocs for
 3077                                  * this key id
 3078                                  */
 3079                                 sctp_clear_cachedkeys_ep(inp, sca->sca_keynumber);
 3080                                 /*
 3081                                  * create the new shared key and
 3082                                  * insert/replace it
 3083                                  */
 3084                                 if (size > 0) {
 3085                                         key = sctp_set_key(sca->sca_key, (uint32_t) size);
 3086                                         if (key == NULL) {
 3087                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
 3088                                                 error = ENOMEM;
 3089                                                 SCTP_INP_WUNLOCK(inp);
 3090                                                 break;
 3091                                         }
 3092                                 }
 3093                                 shared_key = sctp_alloc_sharedkey();
 3094                                 if (shared_key == NULL) {
 3095                                         sctp_free_key(key);
 3096                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
 3097                                         error = ENOMEM;
 3098                                         SCTP_INP_WUNLOCK(inp);
 3099                                         break;
 3100                                 }
 3101                                 shared_key->key = key;
 3102                                 shared_key->keyid = sca->sca_keynumber;
 3103                                 error = sctp_insert_sharedkey(shared_keys, shared_key);
 3104                                 SCTP_INP_WUNLOCK(inp);
 3105                         }
 3106                         break;
 3107                 }
 3108         case SCTP_HMAC_IDENT:
 3109                 {
 3110                         struct sctp_hmacalgo *shmac;
 3111                         sctp_hmaclist_t *hmaclist;
 3112                         uint16_t hmacid;
 3113                         uint32_t i;
 3114 
 3115                         size_t found;
 3116 
 3117                         SCTP_CHECK_AND_CAST(shmac, optval, struct sctp_hmacalgo, optsize);
 3118                         if (optsize < sizeof(struct sctp_hmacalgo) + shmac->shmac_number_of_idents * sizeof(uint16_t)) {
 3119                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3120                                 error = EINVAL;
 3121                                 break;
 3122                         }
 3123                         hmaclist = sctp_alloc_hmaclist(shmac->shmac_number_of_idents);
 3124                         if (hmaclist == NULL) {
 3125                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOMEM);
 3126                                 error = ENOMEM;
 3127                                 break;
 3128                         }
 3129                         for (i = 0; i < shmac->shmac_number_of_idents; i++) {
 3130                                 hmacid = shmac->shmac_idents[i];
 3131                                 if (sctp_auth_add_hmacid(hmaclist, hmacid)) {
 3132                                          /* invalid HMACs were found */ ;
 3133                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3134                                         error = EINVAL;
 3135                                         sctp_free_hmaclist(hmaclist);
 3136                                         goto sctp_set_hmac_done;
 3137                                 }
 3138                         }
 3139                         found = 0;
 3140                         for (i = 0; i < hmaclist->num_algo; i++) {
 3141                                 if (hmaclist->hmac[i] == SCTP_AUTH_HMAC_ID_SHA1) {
 3142                                         /* already in list */
 3143                                         found = 1;
 3144                                 }
 3145                         }
 3146                         if (!found) {
 3147                                 sctp_free_hmaclist(hmaclist);
 3148                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3149                                 error = EINVAL;
 3150                                 break;
 3151                         }
 3152                         /* set it on the endpoint */
 3153                         SCTP_INP_WLOCK(inp);
 3154                         if (inp->sctp_ep.local_hmacs)
 3155                                 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
 3156                         inp->sctp_ep.local_hmacs = hmaclist;
 3157                         SCTP_INP_WUNLOCK(inp);
 3158         sctp_set_hmac_done:
 3159                         break;
 3160                 }
 3161         case SCTP_AUTH_ACTIVE_KEY:
 3162                 {
 3163                         struct sctp_authkeyid *scact;
 3164 
 3165                         SCTP_CHECK_AND_CAST(scact, optval, struct sctp_authkeyid,
 3166                             optsize);
 3167                         SCTP_FIND_STCB(inp, stcb, scact->scact_assoc_id);
 3168 
 3169                         /* set the active key on the right place */
 3170                         if (stcb) {
 3171                                 /* set the active key on the assoc */
 3172                                 if (sctp_auth_setactivekey(stcb,
 3173                                     scact->scact_keynumber)) {
 3174                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
 3175                                             SCTP_FROM_SCTP_USRREQ,
 3176                                             EINVAL);
 3177                                         error = EINVAL;
 3178                                 }
 3179                                 SCTP_TCB_UNLOCK(stcb);
 3180                         } else {
 3181                                 /* set the active key on the endpoint */
 3182                                 SCTP_INP_WLOCK(inp);
 3183                                 if (sctp_auth_setactivekey_ep(inp,
 3184                                     scact->scact_keynumber)) {
 3185                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
 3186                                             SCTP_FROM_SCTP_USRREQ,
 3187                                             EINVAL);
 3188                                         error = EINVAL;
 3189                                 }
 3190                                 SCTP_INP_WUNLOCK(inp);
 3191                         }
 3192                         break;
 3193                 }
 3194         case SCTP_AUTH_DELETE_KEY:
 3195                 {
 3196                         struct sctp_authkeyid *scdel;
 3197 
 3198                         SCTP_CHECK_AND_CAST(scdel, optval, struct sctp_authkeyid,
 3199                             optsize);
 3200                         SCTP_FIND_STCB(inp, stcb, scdel->scact_assoc_id);
 3201 
 3202                         /* delete the key from the right place */
 3203                         if (stcb) {
 3204                                 if (sctp_delete_sharedkey(stcb,
 3205                                     scdel->scact_keynumber)) {
 3206                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
 3207                                             SCTP_FROM_SCTP_USRREQ,
 3208                                             EINVAL);
 3209                                         error = EINVAL;
 3210                                 }
 3211                                 SCTP_TCB_UNLOCK(stcb);
 3212                         } else {
 3213                                 SCTP_INP_WLOCK(inp);
 3214                                 if (sctp_delete_sharedkey_ep(inp,
 3215                                     scdel->scact_keynumber)) {
 3216                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
 3217                                             SCTP_FROM_SCTP_USRREQ,
 3218                                             EINVAL);
 3219                                         error = EINVAL;
 3220                                 }
 3221                                 SCTP_INP_WUNLOCK(inp);
 3222                         }
 3223                         break;
 3224                 }
 3225         case SCTP_AUTH_DEACTIVATE_KEY:
 3226                 {
 3227                         struct sctp_authkeyid *keyid;
 3228 
 3229                         SCTP_CHECK_AND_CAST(keyid, optval, struct sctp_authkeyid,
 3230                             optsize);
 3231                         SCTP_FIND_STCB(inp, stcb, keyid->scact_assoc_id);
 3232 
 3233                         /* deactivate the key from the right place */
 3234                         if (stcb) {
 3235                                 if (sctp_deact_sharedkey(stcb,
 3236                                     keyid->scact_keynumber)) {
 3237                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
 3238                                             SCTP_FROM_SCTP_USRREQ,
 3239                                             EINVAL);
 3240                                         error = EINVAL;
 3241                                 }
 3242                                 SCTP_TCB_UNLOCK(stcb);
 3243                         } else {
 3244                                 SCTP_INP_WLOCK(inp);
 3245                                 if (sctp_deact_sharedkey_ep(inp,
 3246                                     keyid->scact_keynumber)) {
 3247                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL,
 3248                                             SCTP_FROM_SCTP_USRREQ,
 3249                                             EINVAL);
 3250                                         error = EINVAL;
 3251                                 }
 3252                                 SCTP_INP_WUNLOCK(inp);
 3253                         }
 3254                         break;
 3255                 }
 3256 
 3257         case SCTP_RESET_STREAMS:
 3258                 {
 3259                         struct sctp_stream_reset *strrst;
 3260                         uint8_t send_in = 0, send_tsn = 0, send_out = 0;
 3261                         int i;
 3262 
 3263                         SCTP_CHECK_AND_CAST(strrst, optval, struct sctp_stream_reset, optsize);
 3264                         SCTP_FIND_STCB(inp, stcb, strrst->strrst_assoc_id);
 3265 
 3266                         if (stcb == NULL) {
 3267                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
 3268                                 error = ENOENT;
 3269                                 break;
 3270                         }
 3271                         if (stcb->asoc.peer_supports_strreset == 0) {
 3272                                 /*
 3273                                  * Peer does not support it, we return
 3274                                  * protocol not supported since this is true
 3275                                  * for this feature and this peer, not the
 3276                                  * socket request in general.
 3277                                  */
 3278                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EPROTONOSUPPORT);
 3279                                 error = EPROTONOSUPPORT;
 3280                                 SCTP_TCB_UNLOCK(stcb);
 3281                                 break;
 3282                         }
 3283                         if (stcb->asoc.stream_reset_outstanding) {
 3284                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
 3285                                 error = EALREADY;
 3286                                 SCTP_TCB_UNLOCK(stcb);
 3287                                 break;
 3288                         }
 3289                         if (strrst->strrst_flags == SCTP_RESET_LOCAL_RECV) {
 3290                                 send_in = 1;
 3291                         } else if (strrst->strrst_flags == SCTP_RESET_LOCAL_SEND) {
 3292                                 send_out = 1;
 3293                         } else if (strrst->strrst_flags == SCTP_RESET_BOTH) {
 3294                                 send_in = 1;
 3295                                 send_out = 1;
 3296                         } else if (strrst->strrst_flags == SCTP_RESET_TSN) {
 3297                                 send_tsn = 1;
 3298                         } else {
 3299                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3300                                 error = EINVAL;
 3301                                 SCTP_TCB_UNLOCK(stcb);
 3302                                 break;
 3303                         }
 3304                         for (i = 0; i < strrst->strrst_num_streams; i++) {
 3305                                 if ((send_in) &&
 3306 
 3307                                     (strrst->strrst_list[i] > stcb->asoc.streamincnt)) {
 3308                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3309                                         error = EINVAL;
 3310                                         goto get_out;
 3311                                 }
 3312                                 if ((send_out) &&
 3313                                     (strrst->strrst_list[i] > stcb->asoc.streamoutcnt)) {
 3314                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3315                                         error = EINVAL;
 3316                                         goto get_out;
 3317                                 }
 3318                         }
 3319                         if (error) {
 3320                 get_out:
 3321                                 SCTP_TCB_UNLOCK(stcb);
 3322                                 break;
 3323                         }
 3324                         error = sctp_send_str_reset_req(stcb, strrst->strrst_num_streams,
 3325                             strrst->strrst_list,
 3326                             send_out, (stcb->asoc.str_reset_seq_in - 3),
 3327                             send_in, send_tsn);
 3328 
 3329                         sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_REQ, SCTP_SO_LOCKED);
 3330                         SCTP_TCB_UNLOCK(stcb);
 3331                 }
 3332                 break;
 3333 
 3334         case SCTP_CONNECT_X:
 3335                 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) {
 3336                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3337                         error = EINVAL;
 3338                         break;
 3339                 }
 3340                 error = sctp_do_connect_x(so, inp, optval, optsize, p, 0);
 3341                 break;
 3342 
 3343         case SCTP_CONNECT_X_DELAYED:
 3344                 if (optsize < (sizeof(int) + sizeof(struct sockaddr_in))) {
 3345                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3346                         error = EINVAL;
 3347                         break;
 3348                 }
 3349                 error = sctp_do_connect_x(so, inp, optval, optsize, p, 1);
 3350                 break;
 3351 
 3352         case SCTP_CONNECT_X_COMPLETE:
 3353                 {
 3354                         struct sockaddr *sa;
 3355                         struct sctp_nets *net;
 3356 
 3357                         /* FIXME MT: check correct? */
 3358                         SCTP_CHECK_AND_CAST(sa, optval, struct sockaddr, optsize);
 3359 
 3360                         /* find tcb */
 3361                         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
 3362                                 SCTP_INP_RLOCK(inp);
 3363                                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
 3364                                 if (stcb) {
 3365                                         SCTP_TCB_LOCK(stcb);
 3366                                         net = sctp_findnet(stcb, sa);
 3367                                 }
 3368                                 SCTP_INP_RUNLOCK(inp);
 3369                         } else {
 3370                                 /*
 3371                                  * We increment here since
 3372                                  * sctp_findassociation_ep_addr() wil do a
 3373                                  * decrement if it finds the stcb as long as
 3374                                  * the locked tcb (last argument) is NOT a
 3375                                  * TCB.. aka NULL.
 3376                                  */
 3377                                 SCTP_INP_INCR_REF(inp);
 3378                                 stcb = sctp_findassociation_ep_addr(&inp, sa, &net, NULL, NULL);
 3379                                 if (stcb == NULL) {
 3380                                         SCTP_INP_DECR_REF(inp);
 3381                                 }
 3382                         }
 3383 
 3384                         if (stcb == NULL) {
 3385                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
 3386                                 error = ENOENT;
 3387                                 break;
 3388                         }
 3389                         if (stcb->asoc.delayed_connection == 1) {
 3390                                 stcb->asoc.delayed_connection = 0;
 3391                                 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
 3392                                 sctp_timer_stop(SCTP_TIMER_TYPE_INIT, inp, stcb,
 3393                                     stcb->asoc.primary_destination,
 3394                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_9);
 3395                                 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
 3396                         } else {
 3397                                 /*
 3398                                  * already expired or did not use delayed
 3399                                  * connectx
 3400                                  */
 3401                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
 3402                                 error = EALREADY;
 3403                         }
 3404                         SCTP_TCB_UNLOCK(stcb);
 3405                 }
 3406                 break;
 3407         case SCTP_MAX_BURST:
 3408                 {
 3409                         uint8_t *burst;
 3410 
 3411                         SCTP_CHECK_AND_CAST(burst, optval, uint8_t, optsize);
 3412 
 3413                         SCTP_INP_WLOCK(inp);
 3414                         if (*burst) {
 3415                                 inp->sctp_ep.max_burst = *burst;
 3416                         }
 3417                         SCTP_INP_WUNLOCK(inp);
 3418                 }
 3419                 break;
 3420         case SCTP_MAXSEG:
 3421                 {
 3422                         struct sctp_assoc_value *av;
 3423                         int ovh;
 3424 
 3425                         SCTP_CHECK_AND_CAST(av, optval, struct sctp_assoc_value, optsize);
 3426                         SCTP_FIND_STCB(inp, stcb, av->assoc_id);
 3427 
 3428                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
 3429                                 ovh = SCTP_MED_OVERHEAD;
 3430                         } else {
 3431                                 ovh = SCTP_MED_V4_OVERHEAD;
 3432                         }
 3433                         if (stcb) {
 3434                                 if (av->assoc_value) {
 3435                                         stcb->asoc.sctp_frag_point = (av->assoc_value + ovh);
 3436                                 } else {
 3437                                         stcb->asoc.sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
 3438                                 }
 3439                                 SCTP_TCB_UNLOCK(stcb);
 3440                         } else {
 3441                                 SCTP_INP_WLOCK(inp);
 3442                                 /*
 3443                                  * FIXME MT: I think this is not in tune
 3444                                  * with the API ID
 3445                                  */
 3446                                 if (av->assoc_value) {
 3447                                         inp->sctp_frag_point = (av->assoc_value + ovh);
 3448                                 } else {
 3449                                         inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
 3450                                 }
 3451                                 SCTP_INP_WUNLOCK(inp);
 3452                         }
 3453                 }
 3454                 break;
 3455         case SCTP_EVENTS:
 3456                 {
 3457                         struct sctp_event_subscribe *events;
 3458 
 3459                         SCTP_CHECK_AND_CAST(events, optval, struct sctp_event_subscribe, optsize);
 3460 
 3461                         SCTP_INP_WLOCK(inp);
 3462                         if (events->sctp_data_io_event) {
 3463                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
 3464                         } else {
 3465                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT);
 3466                         }
 3467 
 3468                         if (events->sctp_association_event) {
 3469                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
 3470                         } else {
 3471                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVASSOCEVNT);
 3472                         }
 3473 
 3474                         if (events->sctp_address_event) {
 3475                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
 3476                         } else {
 3477                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPADDREVNT);
 3478                         }
 3479 
 3480                         if (events->sctp_send_failure_event) {
 3481                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
 3482                         } else {
 3483                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSENDFAILEVNT);
 3484                         }
 3485 
 3486                         if (events->sctp_peer_error_event) {
 3487                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVPEERERR);
 3488                         } else {
 3489                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVPEERERR);
 3490                         }
 3491 
 3492                         if (events->sctp_shutdown_event) {
 3493                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
 3494                         } else {
 3495                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT);
 3496                         }
 3497 
 3498                         if (events->sctp_partial_delivery_event) {
 3499                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
 3500                         } else {
 3501                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_PDAPIEVNT);
 3502                         }
 3503 
 3504                         if (events->sctp_adaptation_layer_event) {
 3505                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
 3506                         } else {
 3507                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_ADAPTATIONEVNT);
 3508                         }
 3509 
 3510                         if (events->sctp_authentication_event) {
 3511                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTHEVNT);
 3512                         } else {
 3513                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTHEVNT);
 3514                         }
 3515 
 3516                         if (events->sctp_sender_dry_event) {
 3517                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_DRYEVNT);
 3518                         } else {
 3519                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_DRYEVNT);
 3520                         }
 3521 
 3522                         if (events->sctp_stream_reset_events) {
 3523                                 sctp_feature_on(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
 3524                         } else {
 3525                                 sctp_feature_off(inp, SCTP_PCB_FLAGS_STREAM_RESETEVNT);
 3526                         }
 3527                         SCTP_INP_WUNLOCK(inp);
 3528                 }
 3529                 break;
 3530 
 3531         case SCTP_ADAPTATION_LAYER:
 3532                 {
 3533                         struct sctp_setadaptation *adap_bits;
 3534 
 3535                         SCTP_CHECK_AND_CAST(adap_bits, optval, struct sctp_setadaptation, optsize);
 3536                         SCTP_INP_WLOCK(inp);
 3537                         inp->sctp_ep.adaptation_layer_indicator = adap_bits->ssb_adaptation_ind;
 3538                         SCTP_INP_WUNLOCK(inp);
 3539                 }
 3540                 break;
 3541 #ifdef SCTP_DEBUG
 3542         case SCTP_SET_INITIAL_DBG_SEQ:
 3543                 {
 3544                         uint32_t *vvv;
 3545 
 3546                         SCTP_CHECK_AND_CAST(vvv, optval, uint32_t, optsize);
 3547                         SCTP_INP_WLOCK(inp);
 3548                         inp->sctp_ep.initial_sequence_debug = *vvv;
 3549                         SCTP_INP_WUNLOCK(inp);
 3550                 }
 3551                 break;
 3552 #endif
 3553         case SCTP_DEFAULT_SEND_PARAM:
 3554                 {
 3555                         struct sctp_sndrcvinfo *s_info;
 3556 
 3557                         SCTP_CHECK_AND_CAST(s_info, optval, struct sctp_sndrcvinfo, optsize);
 3558                         SCTP_FIND_STCB(inp, stcb, s_info->sinfo_assoc_id);
 3559 
 3560                         if (stcb) {
 3561                                 if (s_info->sinfo_stream <= stcb->asoc.streamoutcnt) {
 3562                                         memcpy(&stcb->asoc.def_send, s_info, min(optsize, sizeof(stcb->asoc.def_send)));
 3563                                 } else {
 3564                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3565                                         error = EINVAL;
 3566                                 }
 3567                                 SCTP_TCB_UNLOCK(stcb);
 3568                         } else {
 3569                                 SCTP_INP_WLOCK(inp);
 3570                                 memcpy(&inp->def_send, s_info, min(optsize, sizeof(inp->def_send)));
 3571                                 SCTP_INP_WUNLOCK(inp);
 3572                         }
 3573                 }
 3574                 break;
 3575         case SCTP_PEER_ADDR_PARAMS:
 3576                 /* Applys to the specific association */
 3577                 {
 3578                         struct sctp_paddrparams *paddrp;
 3579                         struct sctp_nets *net;
 3580 
 3581                         SCTP_CHECK_AND_CAST(paddrp, optval, struct sctp_paddrparams, optsize);
 3582                         SCTP_FIND_STCB(inp, stcb, paddrp->spp_assoc_id);
 3583                         net = NULL;
 3584                         if (stcb) {
 3585                                 net = sctp_findnet(stcb, (struct sockaddr *)&paddrp->spp_address);
 3586                         } else {
 3587                                 /*
 3588                                  * We increment here since
 3589                                  * sctp_findassociation_ep_addr() wil do a
 3590                                  * decrement if it finds the stcb as long as
 3591                                  * the locked tcb (last argument) is NOT a
 3592                                  * TCB.. aka NULL.
 3593                                  */
 3594                                 SCTP_INP_INCR_REF(inp);
 3595                                 stcb = sctp_findassociation_ep_addr(&inp,
 3596                                     (struct sockaddr *)&paddrp->spp_address,
 3597                                     &net, NULL, NULL);
 3598                                 if (stcb == NULL) {
 3599                                         SCTP_INP_DECR_REF(inp);
 3600                                 }
 3601                         }
 3602                         if (stcb && (net == NULL)) {
 3603                                 struct sockaddr *sa;
 3604 
 3605                                 sa = (struct sockaddr *)&paddrp->spp_address;
 3606                                 if (sa->sa_family == AF_INET) {
 3607                                         struct sockaddr_in *sin;
 3608 
 3609                                         sin = (struct sockaddr_in *)sa;
 3610                                         if (sin->sin_addr.s_addr) {
 3611                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3612                                                 SCTP_TCB_UNLOCK(stcb);
 3613                                                 error = EINVAL;
 3614                                                 break;
 3615                                         }
 3616                                 } else if (sa->sa_family == AF_INET6) {
 3617                                         struct sockaddr_in6 *sin6;
 3618 
 3619                                         sin6 = (struct sockaddr_in6 *)sa;
 3620                                         if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
 3621                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3622                                                 SCTP_TCB_UNLOCK(stcb);
 3623                                                 error = EINVAL;
 3624                                                 break;
 3625                                         }
 3626                                 } else {
 3627                                         error = EAFNOSUPPORT;
 3628                                         SCTP_TCB_UNLOCK(stcb);
 3629                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, error);
 3630                                         break;
 3631                                 }
 3632                         }
 3633                         /* sanity checks */
 3634                         if ((paddrp->spp_flags & SPP_HB_ENABLE) && (paddrp->spp_flags & SPP_HB_DISABLE)) {
 3635                                 if (stcb)
 3636                                         SCTP_TCB_UNLOCK(stcb);
 3637                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3638                                 return (EINVAL);
 3639                         }
 3640                         if ((paddrp->spp_flags & SPP_PMTUD_ENABLE) && (paddrp->spp_flags & SPP_PMTUD_DISABLE)) {
 3641                                 if (stcb)
 3642                                         SCTP_TCB_UNLOCK(stcb);
 3643                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3644                                 return (EINVAL);
 3645                         }
 3646                         if (stcb) {
 3647                                 /************************TCB SPECIFIC SET ******************/
 3648                                 /*
 3649                                  * do we change the timer for HB, we run
 3650                                  * only one?
 3651                                  */
 3652                                 int ovh = 0;
 3653 
 3654                                 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
 3655                                         ovh = SCTP_MED_OVERHEAD;
 3656                                 } else {
 3657                                         ovh = SCTP_MED_V4_OVERHEAD;
 3658                                 }
 3659 
 3660                                 if (paddrp->spp_hbinterval)
 3661                                         stcb->asoc.heart_beat_delay = paddrp->spp_hbinterval;
 3662                                 else if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO)
 3663                                         stcb->asoc.heart_beat_delay = 0;
 3664 
 3665                                 /* network sets ? */
 3666                                 if (net) {
 3667                                         /************************NET SPECIFIC SET ******************/
 3668                                         if (paddrp->spp_flags & SPP_HB_DEMAND) {
 3669                                                 /* on demand HB */
 3670                                                 if (sctp_send_hb(stcb, 1, net) < 0) {
 3671                                                         /* asoc destroyed */
 3672                                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3673                                                         error = EINVAL;
 3674                                                         break;
 3675                                                 }
 3676                                         }
 3677                                         if (paddrp->spp_flags & SPP_HB_DISABLE) {
 3678                                                 net->dest_state |= SCTP_ADDR_NOHB;
 3679                                         }
 3680                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
 3681                                                 net->dest_state &= ~SCTP_ADDR_NOHB;
 3682                                         }
 3683                                         if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && (paddrp->spp_pathmtu >= SCTP_SMALLEST_PMTU)) {
 3684                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
 3685                                                         sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
 3686                                                             SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10);
 3687                                                 }
 3688                                                 if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) {
 3689                                                         net->mtu = paddrp->spp_pathmtu + ovh;
 3690                                                         if (net->mtu < stcb->asoc.smallest_mtu) {
 3691 #ifdef SCTP_PRINT_FOR_B_AND_M
 3692                                                                 SCTP_PRINTF("SCTP_PMTU_DISABLE calls sctp_pathmtu_adjustment:%d\n",
 3693                                                                     net->mtu);
 3694 #endif
 3695                                                                 sctp_pathmtu_adjustment(inp, stcb, net, net->mtu);
 3696                                                         }
 3697                                                 }
 3698                                         }
 3699                                         if (paddrp->spp_flags & SPP_PMTUD_ENABLE) {
 3700                                                 if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
 3701                                                         sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
 3702                                                 }
 3703                                         }
 3704                                         if (paddrp->spp_pathmaxrxt)
 3705                                                 net->failure_threshold = paddrp->spp_pathmaxrxt;
 3706 #ifdef INET
 3707                                         if (paddrp->spp_flags & SPP_IPV4_TOS) {
 3708                                                 if (net->ro._l_addr.sin.sin_family == AF_INET) {
 3709                                                         net->tos_flowlabel = paddrp->spp_ipv4_tos & 0x000000fc;
 3710                                                 }
 3711                                         }
 3712 #endif
 3713 #ifdef INET6
 3714                                         if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL) {
 3715                                                 if (net->ro._l_addr.sin6.sin6_family == AF_INET6) {
 3716                                                         net->tos_flowlabel = paddrp->spp_ipv6_flowlabel;
 3717                                                 }
 3718                                         }
 3719 #endif
 3720                                 } else {
 3721                                         /************************ASSOC ONLY -- NO NET SPECIFIC SET ******************/
 3722                                         if (paddrp->spp_pathmaxrxt)
 3723                                                 stcb->asoc.def_net_failure = paddrp->spp_pathmaxrxt;
 3724 
 3725                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
 3726                                                 /* Turn back on the timer */
 3727                                                 stcb->asoc.hb_is_disabled = 0;
 3728                                                 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
 3729                                         }
 3730                                         if ((paddrp->spp_flags & SPP_PMTUD_DISABLE) && (paddrp->spp_pathmtu >= SCTP_SMALLEST_PMTU)) {
 3731                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 3732                                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
 3733                                                                 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
 3734                                                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_10);
 3735                                                         }
 3736                                                         if (paddrp->spp_pathmtu > SCTP_DEFAULT_MINSEGMENT) {
 3737                                                                 net->mtu = paddrp->spp_pathmtu + ovh;
 3738                                                                 if (net->mtu < stcb->asoc.smallest_mtu) {
 3739 #ifdef SCTP_PRINT_FOR_B_AND_M
 3740                                                                         SCTP_PRINTF("SCTP_PMTU_DISABLE calls sctp_pathmtu_adjustment:%d\n",
 3741                                                                             net->mtu);
 3742 #endif
 3743                                                                         sctp_pathmtu_adjustment(inp, stcb, net, net->mtu);
 3744                                                                 }
 3745                                                         }
 3746                                                 }
 3747                                         }
 3748                                         if (paddrp->spp_flags & SPP_PMTUD_ENABLE) {
 3749                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 3750                                                         if (SCTP_OS_TIMER_PENDING(&net->pmtu_timer.timer)) {
 3751                                                                 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net);
 3752                                                         }
 3753                                                 }
 3754                                         }
 3755                                         if (paddrp->spp_flags & SPP_HB_DISABLE) {
 3756                                                 int cnt_of_unconf = 0;
 3757                                                 struct sctp_nets *lnet;
 3758 
 3759                                                 stcb->asoc.hb_is_disabled = 1;
 3760                                                 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
 3761                                                         if (lnet->dest_state & SCTP_ADDR_UNCONFIRMED) {
 3762                                                                 cnt_of_unconf++;
 3763                                                         }
 3764                                                 }
 3765                                                 /*
 3766                                                  * stop the timer ONLY if we
 3767                                                  * have no unconfirmed
 3768                                                  * addresses
 3769                                                  */
 3770                                                 if (cnt_of_unconf == 0) {
 3771                                                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 3772                                                                 sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net,
 3773                                                                     SCTP_FROM_SCTP_USRREQ + SCTP_LOC_11);
 3774                                                         }
 3775                                                 }
 3776                                         }
 3777                                         if (paddrp->spp_flags & SPP_HB_ENABLE) {
 3778                                                 /* start up the timer. */
 3779                                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 3780                                                         sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
 3781                                                 }
 3782                                         }
 3783 #ifdef INET
 3784                                         if (paddrp->spp_flags & SPP_IPV4_TOS)
 3785                                                 stcb->asoc.default_tos = paddrp->spp_ipv4_tos & 0x000000fc;
 3786 #endif
 3787 #ifdef INET6
 3788                                         if (paddrp->spp_flags & SPP_IPV6_FLOWLABEL)
 3789                                                 stcb->asoc.default_flowlabel = paddrp->spp_ipv6_flowlabel;
 3790 #endif
 3791 
 3792                                 }
 3793                                 SCTP_TCB_UNLOCK(stcb);
 3794                         } else {
 3795                                 /************************NO TCB, SET TO default stuff ******************/
 3796                                 SCTP_INP_WLOCK(inp);
 3797                                 /*
 3798                                  * For the TOS/FLOWLABEL stuff you set it
 3799                                  * with the options on the socket
 3800                                  */
 3801                                 if (paddrp->spp_pathmaxrxt) {
 3802                                         inp->sctp_ep.def_net_failure = paddrp->spp_pathmaxrxt;
 3803                                 }
 3804                                 if (paddrp->spp_flags & SPP_HB_TIME_IS_ZERO)
 3805                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = 0;
 3806                                 else if (paddrp->spp_hbinterval) {
 3807                                         if (paddrp->spp_hbinterval > SCTP_MAX_HB_INTERVAL)
 3808                                                 paddrp->spp_hbinterval = SCTP_MAX_HB_INTERVAL;
 3809                                         inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(paddrp->spp_hbinterval);
 3810                                 }
 3811                                 if (paddrp->spp_flags & SPP_HB_ENABLE) {
 3812                                         sctp_feature_off(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
 3813 
 3814                                 } else if (paddrp->spp_flags & SPP_HB_DISABLE) {
 3815                                         sctp_feature_on(inp, SCTP_PCB_FLAGS_DONOT_HEARTBEAT);
 3816                                 }
 3817                                 SCTP_INP_WUNLOCK(inp);
 3818                         }
 3819                 }
 3820                 break;
 3821         case SCTP_RTOINFO:
 3822                 {
 3823                         struct sctp_rtoinfo *srto;
 3824                         uint32_t new_init, new_min, new_max;
 3825 
 3826                         SCTP_CHECK_AND_CAST(srto, optval, struct sctp_rtoinfo, optsize);
 3827                         SCTP_FIND_STCB(inp, stcb, srto->srto_assoc_id);
 3828 
 3829                         if (stcb) {
 3830                                 if (srto->srto_initial)
 3831                                         new_init = srto->srto_initial;
 3832                                 else
 3833                                         new_init = stcb->asoc.initial_rto;
 3834                                 if (srto->srto_max)
 3835                                         new_max = srto->srto_max;
 3836                                 else
 3837                                         new_max = stcb->asoc.maxrto;
 3838                                 if (srto->srto_min)
 3839                                         new_min = srto->srto_min;
 3840                                 else
 3841                                         new_min = stcb->asoc.minrto;
 3842                                 if ((new_min <= new_init) && (new_init <= new_max)) {
 3843                                         stcb->asoc.initial_rto = new_init;
 3844                                         stcb->asoc.maxrto = new_max;
 3845                                         stcb->asoc.minrto = new_min;
 3846                                 } else {
 3847                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3848                                         error = EINVAL;
 3849                                 }
 3850                                 SCTP_TCB_UNLOCK(stcb);
 3851                         } else {
 3852                                 SCTP_INP_WLOCK(inp);
 3853                                 if (srto->srto_initial)
 3854                                         new_init = srto->srto_initial;
 3855                                 else
 3856                                         new_init = inp->sctp_ep.initial_rto;
 3857                                 if (srto->srto_max)
 3858                                         new_max = srto->srto_max;
 3859                                 else
 3860                                         new_max = inp->sctp_ep.sctp_maxrto;
 3861                                 if (srto->srto_min)
 3862                                         new_min = srto->srto_min;
 3863                                 else
 3864                                         new_min = inp->sctp_ep.sctp_minrto;
 3865                                 if ((new_min <= new_init) && (new_init <= new_max)) {
 3866                                         inp->sctp_ep.initial_rto = new_init;
 3867                                         inp->sctp_ep.sctp_maxrto = new_max;
 3868                                         inp->sctp_ep.sctp_minrto = new_min;
 3869                                 } else {
 3870                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3871                                         error = EINVAL;
 3872                                 }
 3873                                 SCTP_INP_WUNLOCK(inp);
 3874                         }
 3875                 }
 3876                 break;
 3877         case SCTP_ASSOCINFO:
 3878                 {
 3879                         struct sctp_assocparams *sasoc;
 3880 
 3881                         SCTP_CHECK_AND_CAST(sasoc, optval, struct sctp_assocparams, optsize);
 3882                         SCTP_FIND_STCB(inp, stcb, sasoc->sasoc_assoc_id);
 3883                         if (sasoc->sasoc_cookie_life) {
 3884                                 /* boundary check the cookie life */
 3885                                 if (sasoc->sasoc_cookie_life < 1000)
 3886                                         sasoc->sasoc_cookie_life = 1000;
 3887                                 if (sasoc->sasoc_cookie_life > SCTP_MAX_COOKIE_LIFE) {
 3888                                         sasoc->sasoc_cookie_life = SCTP_MAX_COOKIE_LIFE;
 3889                                 }
 3890                         }
 3891                         if (stcb) {
 3892                                 if (sasoc->sasoc_asocmaxrxt)
 3893                                         stcb->asoc.max_send_times = sasoc->sasoc_asocmaxrxt;
 3894                                 sasoc->sasoc_number_peer_destinations = stcb->asoc.numnets;
 3895                                 sasoc->sasoc_peer_rwnd = 0;
 3896                                 sasoc->sasoc_local_rwnd = 0;
 3897                                 if (sasoc->sasoc_cookie_life) {
 3898                                         stcb->asoc.cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life);
 3899                                 }
 3900                                 SCTP_TCB_UNLOCK(stcb);
 3901                         } else {
 3902                                 SCTP_INP_WLOCK(inp);
 3903                                 if (sasoc->sasoc_asocmaxrxt)
 3904                                         inp->sctp_ep.max_send_times = sasoc->sasoc_asocmaxrxt;
 3905                                 sasoc->sasoc_number_peer_destinations = 0;
 3906                                 sasoc->sasoc_peer_rwnd = 0;
 3907                                 sasoc->sasoc_local_rwnd = 0;
 3908                                 if (sasoc->sasoc_cookie_life) {
 3909                                         inp->sctp_ep.def_cookie_life = MSEC_TO_TICKS(sasoc->sasoc_cookie_life);
 3910                                 }
 3911                                 SCTP_INP_WUNLOCK(inp);
 3912                         }
 3913                 }
 3914                 break;
 3915         case SCTP_INITMSG:
 3916                 {
 3917                         struct sctp_initmsg *sinit;
 3918 
 3919                         SCTP_CHECK_AND_CAST(sinit, optval, struct sctp_initmsg, optsize);
 3920                         SCTP_INP_WLOCK(inp);
 3921                         if (sinit->sinit_num_ostreams)
 3922                                 inp->sctp_ep.pre_open_stream_count = sinit->sinit_num_ostreams;
 3923 
 3924                         if (sinit->sinit_max_instreams)
 3925                                 inp->sctp_ep.max_open_streams_intome = sinit->sinit_max_instreams;
 3926 
 3927                         if (sinit->sinit_max_attempts)
 3928                                 inp->sctp_ep.max_init_times = sinit->sinit_max_attempts;
 3929 
 3930                         if (sinit->sinit_max_init_timeo)
 3931                                 inp->sctp_ep.initial_init_rto_max = sinit->sinit_max_init_timeo;
 3932                         SCTP_INP_WUNLOCK(inp);
 3933                 }
 3934                 break;
 3935         case SCTP_PRIMARY_ADDR:
 3936                 {
 3937                         struct sctp_setprim *spa;
 3938                         struct sctp_nets *net, *lnet;
 3939 
 3940                         SCTP_CHECK_AND_CAST(spa, optval, struct sctp_setprim, optsize);
 3941                         SCTP_FIND_STCB(inp, stcb, spa->ssp_assoc_id);
 3942 
 3943                         net = NULL;
 3944                         if (stcb) {
 3945                                 net = sctp_findnet(stcb, (struct sockaddr *)&spa->ssp_addr);
 3946                         } else {
 3947                                 /*
 3948                                  * We increment here since
 3949                                  * sctp_findassociation_ep_addr() wil do a
 3950                                  * decrement if it finds the stcb as long as
 3951                                  * the locked tcb (last argument) is NOT a
 3952                                  * TCB.. aka NULL.
 3953                                  */
 3954                                 SCTP_INP_INCR_REF(inp);
 3955                                 stcb = sctp_findassociation_ep_addr(&inp,
 3956                                     (struct sockaddr *)&spa->ssp_addr,
 3957                                     &net, NULL, NULL);
 3958                                 if (stcb == NULL) {
 3959                                         SCTP_INP_DECR_REF(inp);
 3960                                 }
 3961                         }
 3962 
 3963                         if ((stcb) && (net)) {
 3964                                 if ((net != stcb->asoc.primary_destination) &&
 3965                                     (!(net->dest_state & SCTP_ADDR_UNCONFIRMED))) {
 3966                                         /* Ok we need to set it */
 3967                                         lnet = stcb->asoc.primary_destination;
 3968                                         if (sctp_set_primary_addr(stcb, (struct sockaddr *)NULL, net) == 0) {
 3969                                                 if (net->dest_state & SCTP_ADDR_SWITCH_PRIMARY) {
 3970                                                         net->dest_state |= SCTP_ADDR_DOUBLE_SWITCH;
 3971                                                 }
 3972                                                 net->dest_state |= SCTP_ADDR_SWITCH_PRIMARY;
 3973                                         }
 3974                                 }
 3975                         } else {
 3976                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 3977                                 error = EINVAL;
 3978                         }
 3979                         if (stcb) {
 3980                                 SCTP_TCB_UNLOCK(stcb);
 3981                         }
 3982                 }
 3983                 break;
 3984         case SCTP_SET_DYNAMIC_PRIMARY:
 3985                 {
 3986                         union sctp_sockstore *ss;
 3987 
 3988                         error = priv_check(curthread,
 3989                             PRIV_NETINET_RESERVEDPORT);
 3990                         if (error)
 3991                                 break;
 3992 
 3993                         SCTP_CHECK_AND_CAST(ss, optval, union sctp_sockstore, optsize);
 3994                         /* SUPER USER CHECK? */
 3995                         error = sctp_dynamic_set_primary(&ss->sa, vrf_id);
 3996                 }
 3997                 break;
 3998         case SCTP_SET_PEER_PRIMARY_ADDR:
 3999                 {
 4000                         struct sctp_setpeerprim *sspp;
 4001 
 4002                         SCTP_CHECK_AND_CAST(sspp, optval, struct sctp_setpeerprim, optsize);
 4003                         SCTP_FIND_STCB(inp, stcb, sspp->sspp_assoc_id);
 4004                         if (stcb != NULL) {
 4005                                 struct sctp_ifa *ifa;
 4006 
 4007                                 ifa = sctp_find_ifa_by_addr((struct sockaddr *)&sspp->sspp_addr,
 4008                                     stcb->asoc.vrf_id, SCTP_ADDR_NOT_LOCKED);
 4009                                 if (ifa == NULL) {
 4010                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4011                                         error = EINVAL;
 4012                                         goto out_of_it;
 4013                                 }
 4014                                 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
 4015                                         /*
 4016                                          * Must validate the ifa found is in
 4017                                          * our ep
 4018                                          */
 4019                                         struct sctp_laddr *laddr;
 4020                                         int found = 0;
 4021 
 4022                                         LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
 4023                                                 if (laddr->ifa == NULL) {
 4024                                                         SCTPDBG(SCTP_DEBUG_OUTPUT1, "%s: NULL ifa\n",
 4025                                                             __FUNCTION__);
 4026                                                         continue;
 4027                                                 }
 4028                                                 if (laddr->ifa == ifa) {
 4029                                                         found = 1;
 4030                                                         break;
 4031                                                 }
 4032                                         }
 4033                                         if (!found) {
 4034                                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4035                                                 error = EINVAL;
 4036                                                 goto out_of_it;
 4037                                         }
 4038                                 }
 4039                                 if (sctp_set_primary_ip_address_sa(stcb,
 4040                                     (struct sockaddr *)&sspp->sspp_addr) != 0) {
 4041                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4042                                         error = EINVAL;
 4043                                 }
 4044                 out_of_it:
 4045                                 SCTP_TCB_UNLOCK(stcb);
 4046                         } else {
 4047                                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4048                                 error = EINVAL;
 4049                         }
 4050 
 4051                 }
 4052                 break;
 4053         case SCTP_BINDX_ADD_ADDR:
 4054                 {
 4055                         struct sctp_getaddresses *addrs;
 4056                         size_t sz;
 4057                         struct thread *td;
 4058 
 4059                         td = (struct thread *)p;
 4060                         SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses,
 4061                             optsize);
 4062                         if (addrs->addr->sa_family == AF_INET) {
 4063                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in);
 4064                                 if (optsize < sz) {
 4065                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4066                                         error = EINVAL;
 4067                                         break;
 4068                                 }
 4069                                 if (td != NULL && prison_local_ip4(td->td_ucred, &(((struct sockaddr_in *)(addrs->addr))->sin_addr))) {
 4070                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRNOTAVAIL);
 4071                                         error = EADDRNOTAVAIL;
 4072                                         break;
 4073                                 }
 4074 #ifdef INET6
 4075                         } else if (addrs->addr->sa_family == AF_INET6) {
 4076                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in6);
 4077                                 if (optsize < sz) {
 4078                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4079                                         error = EINVAL;
 4080                                         break;
 4081                                 }
 4082                                 if (td != NULL && prison_local_ip6(td->td_ucred, &(((struct sockaddr_in6 *)(addrs->addr))->sin6_addr),
 4083                                     (SCTP_IPV6_V6ONLY(inp) != 0)) != 0) {
 4084                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRNOTAVAIL);
 4085                                         error = EADDRNOTAVAIL;
 4086                                         break;
 4087                                 }
 4088 #endif
 4089                         } else {
 4090                                 error = EAFNOSUPPORT;
 4091                                 break;
 4092                         }
 4093                         sctp_bindx_add_address(so, inp, addrs->addr,
 4094                             addrs->sget_assoc_id, vrf_id,
 4095                             &error, p);
 4096                 }
 4097                 break;
 4098         case SCTP_BINDX_REM_ADDR:
 4099                 {
 4100                         struct sctp_getaddresses *addrs;
 4101                         size_t sz;
 4102                         struct thread *td;
 4103 
 4104                         td = (struct thread *)p;
 4105 
 4106                         SCTP_CHECK_AND_CAST(addrs, optval, struct sctp_getaddresses, optsize);
 4107                         if (addrs->addr->sa_family == AF_INET) {
 4108                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in);
 4109                                 if (optsize < sz) {
 4110                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4111                                         error = EINVAL;
 4112                                         break;
 4113                                 }
 4114                                 if (td != NULL && prison_local_ip4(td->td_ucred, &(((struct sockaddr_in *)(addrs->addr))->sin_addr))) {
 4115                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRNOTAVAIL);
 4116                                         error = EADDRNOTAVAIL;
 4117                                         break;
 4118                                 }
 4119 #ifdef INET6
 4120                         } else if (addrs->addr->sa_family == AF_INET6) {
 4121                                 sz = sizeof(struct sctp_getaddresses) - sizeof(struct sockaddr) + sizeof(struct sockaddr_in6);
 4122                                 if (optsize < sz) {
 4123                                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4124                                         error = EINVAL;
 4125                                         break;
 4126                                 }
 4127                                 if (td != NULL && prison_local_ip6(td->td_ucred, &(((struct sockaddr_in6 *)(addrs->addr))->sin6_addr),
 4128                                     (SCTP_IPV6_V6ONLY(inp) != 0)) != 0) {
 4129                                         SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRNOTAVAIL);
 4130                                         error = EADDRNOTAVAIL;
 4131                                         break;
 4132                                 }
 4133 #endif
 4134                         } else {
 4135                                 error = EAFNOSUPPORT;
 4136                                 break;
 4137                         }
 4138                         sctp_bindx_delete_address(so, inp, addrs->addr,
 4139                             addrs->sget_assoc_id, vrf_id,
 4140                             &error);
 4141                 }
 4142                 break;
 4143         default:
 4144                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOPROTOOPT);
 4145                 error = ENOPROTOOPT;
 4146                 break;
 4147         }                       /* end switch (opt) */
 4148         return (error);
 4149 }
 4150 
 4151 int
 4152 sctp_ctloutput(struct socket *so, struct sockopt *sopt)
 4153 {
 4154         void *optval = NULL;
 4155         size_t optsize = 0;
 4156         struct sctp_inpcb *inp;
 4157         void *p;
 4158         int error = 0;
 4159 
 4160         inp = (struct sctp_inpcb *)so->so_pcb;
 4161         if (inp == 0) {
 4162                 /* I made the same as TCP since we are not setup? */
 4163                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4164                 return (ECONNRESET);
 4165         }
 4166         if (sopt->sopt_level != IPPROTO_SCTP) {
 4167                 /* wrong proto level... send back up to IP */
 4168 #ifdef INET6
 4169                 if (INP_CHECK_SOCKAF(so, AF_INET6))
 4170                         error = ip6_ctloutput(so, sopt);
 4171                 else
 4172 #endif                          /* INET6 */
 4173                         error = ip_ctloutput(so, sopt);
 4174                 return (error);
 4175         }
 4176         optsize = sopt->sopt_valsize;
 4177         if (optsize) {
 4178                 SCTP_MALLOC(optval, void *, optsize, SCTP_M_SOCKOPT);
 4179                 if (optval == NULL) {
 4180                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOBUFS);
 4181                         return (ENOBUFS);
 4182                 }
 4183                 error = sooptcopyin(sopt, optval, optsize, optsize);
 4184                 if (error) {
 4185                         SCTP_FREE(optval, SCTP_M_SOCKOPT);
 4186                         goto out;
 4187                 }
 4188         }
 4189         p = (void *)sopt->sopt_td;
 4190         if (sopt->sopt_dir == SOPT_SET) {
 4191                 error = sctp_setopt(so, sopt->sopt_name, optval, optsize, p);
 4192         } else if (sopt->sopt_dir == SOPT_GET) {
 4193                 error = sctp_getopt(so, sopt->sopt_name, optval, &optsize, p);
 4194         } else {
 4195                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4196                 error = EINVAL;
 4197         }
 4198         if ((error == 0) && (optval != NULL)) {
 4199                 error = sooptcopyout(sopt, optval, optsize);
 4200                 SCTP_FREE(optval, SCTP_M_SOCKOPT);
 4201         } else if (optval != NULL) {
 4202                 SCTP_FREE(optval, SCTP_M_SOCKOPT);
 4203         }
 4204 out:
 4205         return (error);
 4206 }
 4207 
 4208 
 4209 static int
 4210 sctp_connect(struct socket *so, struct sockaddr *addr, struct thread *p)
 4211 {
 4212         int error = 0;
 4213         int create_lock_on = 0;
 4214         uint32_t vrf_id;
 4215         struct sctp_inpcb *inp;
 4216         struct sctp_tcb *stcb = NULL;
 4217 
 4218         inp = (struct sctp_inpcb *)so->so_pcb;
 4219         if (inp == 0) {
 4220                 /* I made the same as TCP since we are not setup? */
 4221                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4222                 return (ECONNRESET);
 4223         }
 4224         if (addr == NULL) {
 4225                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4226                 return EINVAL;
 4227         }
 4228 #ifdef INET6
 4229         if (addr->sa_family == AF_INET6) {
 4230                 struct sockaddr_in6 *sin6p;
 4231 
 4232                 if (addr->sa_len != sizeof(struct sockaddr_in6)) {
 4233                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4234                         return (EINVAL);
 4235                 }
 4236                 sin6p = (struct sockaddr_in6 *)addr;
 4237                 if (p != NULL && prison_remote_ip6(p->td_ucred, &sin6p->sin6_addr) != 0) {
 4238                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4239                         return (EINVAL);
 4240                 }
 4241         } else
 4242 #endif
 4243         if (addr->sa_family == AF_INET) {
 4244                 struct sockaddr_in *sinp;
 4245 
 4246                 if (addr->sa_len != sizeof(struct sockaddr_in)) {
 4247                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4248                         return (EINVAL);
 4249                 }
 4250                 sinp = (struct sockaddr_in *)addr;
 4251                 if (p != NULL && prison_remote_ip4(p->td_ucred, &sinp->sin_addr) != 0) {
 4252                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4253                         return (EINVAL);
 4254                 }
 4255         } else {
 4256                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EAFNOSUPPORT);
 4257                 return (EAFNOSUPPORT);
 4258         }
 4259         SCTP_INP_INCR_REF(inp);
 4260         SCTP_ASOC_CREATE_LOCK(inp);
 4261         create_lock_on = 1;
 4262 
 4263         if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
 4264             (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
 4265                 /* Should I really unlock ? */
 4266                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EFAULT);
 4267                 error = EFAULT;
 4268                 goto out_now;
 4269         }
 4270 #ifdef INET6
 4271         if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) &&
 4272             (addr->sa_family == AF_INET6)) {
 4273                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4274                 error = EINVAL;
 4275                 goto out_now;
 4276         }
 4277 #endif                          /* INET6 */
 4278         if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) ==
 4279             SCTP_PCB_FLAGS_UNBOUND) {
 4280                 /* Bind a ephemeral port */
 4281                 error = sctp_inpcb_bind(so, NULL, NULL, p);
 4282                 if (error) {
 4283                         goto out_now;
 4284                 }
 4285         }
 4286         /* Now do we connect? */
 4287         if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
 4288             (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE))) {
 4289                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4290                 error = EINVAL;
 4291                 goto out_now;
 4292         }
 4293         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
 4294             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
 4295                 /* We are already connected AND the TCP model */
 4296                 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
 4297                 error = EADDRINUSE;
 4298                 goto out_now;
 4299         }
 4300         if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
 4301                 SCTP_INP_RLOCK(inp);
 4302                 stcb = LIST_FIRST(&inp->sctp_asoc_list);
 4303                 SCTP_INP_RUNLOCK(inp);
 4304         } else {
 4305                 /*
 4306                  * We increment here since sctp_findassociation_ep_addr()
 4307                  * will do a decrement if it finds the stcb as long as the
 4308                  * locked tcb (last argument) is NOT a TCB.. aka NULL.
 4309                  */
 4310                 SCTP_INP_INCR_REF(inp);
 4311                 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL);
 4312                 if (stcb == NULL) {
 4313                         SCTP_INP_DECR_REF(inp);
 4314                 } else {
 4315                         SCTP_TCB_UNLOCK(stcb);
 4316                 }
 4317         }
 4318         if (stcb != NULL) {
 4319                 /* Already have or am bring up an association */
 4320                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EALREADY);
 4321                 error = EALREADY;
 4322                 goto out_now;
 4323         }
 4324         vrf_id = inp->def_vrf_id;
 4325         /* We are GOOD to go */
 4326         stcb = sctp_aloc_assoc(inp, addr, 1, &error, 0, vrf_id, p);
 4327         if (stcb == NULL) {
 4328                 /* Gak! no memory */
 4329                 goto out_now;
 4330         }
 4331         if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
 4332                 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
 4333                 /* Set the connected flag so we can queue data */
 4334                 soisconnecting(so);
 4335         }
 4336         SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_COOKIE_WAIT);
 4337         (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered);
 4338 
 4339         /* initialize authentication parameters for the assoc */
 4340         sctp_initialize_auth_params(inp, stcb);
 4341 
 4342         sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED);
 4343         SCTP_TCB_UNLOCK(stcb);
 4344 out_now:
 4345         if (create_lock_on) {
 4346                 SCTP_ASOC_CREATE_UNLOCK(inp);
 4347         }
 4348         SCTP_INP_DECR_REF(inp);
 4349         return error;
 4350 }
 4351 
 4352 int
 4353 sctp_listen(struct socket *so, int backlog, struct thread *p)
 4354 {
 4355         /*
 4356          * Note this module depends on the protocol processing being called
 4357          * AFTER any socket level flags and backlog are applied to the
 4358          * socket. The traditional way that the socket flags are applied is
 4359          * AFTER protocol processing. We have made a change to the
 4360          * sys/kern/uipc_socket.c module to reverse this but this MUST be in
 4361          * place if the socket API for SCTP is to work properly.
 4362          */
 4363 
 4364         int error = 0;
 4365         struct sctp_inpcb *inp;
 4366 
 4367         inp = (struct sctp_inpcb *)so->so_pcb;
 4368         if (inp == 0) {
 4369                 /* I made the same as TCP since we are not setup? */
 4370                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4371                 return (ECONNRESET);
 4372         }
 4373         if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
 4374                 /* See if we have a listener */
 4375                 struct sctp_inpcb *tinp;
 4376                 union sctp_sockstore store, *sp;
 4377 
 4378                 sp = &store;
 4379                 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
 4380                         /* not bound all */
 4381                         struct sctp_laddr *laddr;
 4382 
 4383                         LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
 4384                                 memcpy(&store, &laddr->ifa->address, sizeof(store));
 4385                                 sp->sin.sin_port = inp->sctp_lport;
 4386                                 tinp = sctp_pcb_findep(&sp->sa, 0, 0, inp->def_vrf_id);
 4387                                 if (tinp && (tinp != inp) &&
 4388                                     ((tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) == 0) &&
 4389                                     ((tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
 4390                                     (tinp->sctp_socket->so_qlimit)) {
 4391                                         /*
 4392                                          * we have a listener already and
 4393                                          * its not this inp.
 4394                                          */
 4395                                         SCTP_INP_DECR_REF(tinp);
 4396                                         return (EADDRINUSE);
 4397                                 } else if (tinp) {
 4398                                         SCTP_INP_DECR_REF(tinp);
 4399                                 }
 4400                         }
 4401                 } else {
 4402                         /* Setup a local addr bound all */
 4403                         memset(&store, 0, sizeof(store));
 4404                         store.sin.sin_port = inp->sctp_lport;
 4405 #ifdef INET6
 4406                         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
 4407                                 store.sa.sa_family = AF_INET6;
 4408                                 store.sa.sa_len = sizeof(struct sockaddr_in6);
 4409                         }
 4410 #endif
 4411                         if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
 4412                                 store.sa.sa_family = AF_INET;
 4413                                 store.sa.sa_len = sizeof(struct sockaddr_in);
 4414                         }
 4415                         tinp = sctp_pcb_findep(&sp->sa, 0, 0, inp->def_vrf_id);
 4416                         if (tinp && (tinp != inp) &&
 4417                             ((tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) == 0) &&
 4418                             ((tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) &&
 4419                             (tinp->sctp_socket->so_qlimit)) {
 4420                                 /*
 4421                                  * we have a listener already and its not
 4422                                  * this inp.
 4423                                  */
 4424                                 SCTP_INP_DECR_REF(tinp);
 4425                                 return (EADDRINUSE);
 4426                         } else if (tinp) {
 4427                                 SCTP_INP_DECR_REF(inp);
 4428                         }
 4429                 }
 4430         }
 4431         SCTP_INP_RLOCK(inp);
 4432 #ifdef SCTP_LOCK_LOGGING
 4433         if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LOCK_LOGGING_ENABLE) {
 4434                 sctp_log_lock(inp, (struct sctp_tcb *)NULL, SCTP_LOG_LOCK_SOCK);
 4435         }
 4436 #endif
 4437         SOCK_LOCK(so);
 4438         error = solisten_proto_check(so);
 4439         if (error) {
 4440                 SOCK_UNLOCK(so);
 4441                 SCTP_INP_RUNLOCK(inp);
 4442                 return (error);
 4443         }
 4444         if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
 4445             (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
 4446                 /*
 4447                  * The unlucky case - We are in the tcp pool with this guy.
 4448                  * - Someone else is in the main inp slot. - We must move
 4449                  * this guy (the listener) to the main slot - We must then
 4450                  * move the guy that was listener to the TCP Pool.
 4451                  */
 4452                 if (sctp_swap_inpcb_for_listen(inp)) {
 4453                         goto in_use;
 4454                 }
 4455         }
 4456         if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
 4457             (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
 4458                 /* We are already connected AND the TCP model */
 4459 in_use:
 4460                 SCTP_INP_RUNLOCK(inp);
 4461                 SOCK_UNLOCK(so);
 4462                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EADDRINUSE);
 4463                 return (EADDRINUSE);
 4464         }
 4465         SCTP_INP_RUNLOCK(inp);
 4466         if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
 4467                 /* We must do a bind. */
 4468                 SOCK_UNLOCK(so);
 4469                 if ((error = sctp_inpcb_bind(so, NULL, NULL, p))) {
 4470                         /* bind error, probably perm */
 4471                         return (error);
 4472                 }
 4473                 SOCK_LOCK(so);
 4474         }
 4475         /* It appears for 7.0 and on, we must always call this. */
 4476         solisten_proto(so, backlog);
 4477         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
 4478                 /* remove the ACCEPTCONN flag for one-to-many sockets */
 4479                 so->so_options &= ~SO_ACCEPTCONN;
 4480         }
 4481         if (backlog == 0) {
 4482                 /* turning off listen */
 4483                 so->so_options &= ~SO_ACCEPTCONN;
 4484         }
 4485         SOCK_UNLOCK(so);
 4486         return (error);
 4487 }
 4488 
 4489 static int sctp_defered_wakeup_cnt = 0;
 4490 
 4491 int
 4492 sctp_accept(struct socket *so, struct sockaddr **addr)
 4493 {
 4494         struct sctp_tcb *stcb;
 4495         struct sctp_inpcb *inp;
 4496         union sctp_sockstore store;
 4497 
 4498 #ifdef INET6
 4499         int error;
 4500 
 4501 #endif
 4502         inp = (struct sctp_inpcb *)so->so_pcb;
 4503 
 4504         if (inp == 0) {
 4505                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4506                 return (ECONNRESET);
 4507         }
 4508         SCTP_INP_RLOCK(inp);
 4509         if (inp->sctp_flags & SCTP_PCB_FLAGS_UDPTYPE) {
 4510                 SCTP_INP_RUNLOCK(inp);
 4511                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EOPNOTSUPP);
 4512                 return (EOPNOTSUPP);
 4513         }
 4514         if (so->so_state & SS_ISDISCONNECTED) {
 4515                 SCTP_INP_RUNLOCK(inp);
 4516                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ECONNABORTED);
 4517                 return (ECONNABORTED);
 4518         }
 4519         stcb = LIST_FIRST(&inp->sctp_asoc_list);
 4520         if (stcb == NULL) {
 4521                 SCTP_INP_RUNLOCK(inp);
 4522                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4523                 return (ECONNRESET);
 4524         }
 4525         SCTP_TCB_LOCK(stcb);
 4526         SCTP_INP_RUNLOCK(inp);
 4527         store = stcb->asoc.primary_destination->ro._l_addr;
 4528         SCTP_TCB_UNLOCK(stcb);
 4529         switch (store.sa.sa_family) {
 4530         case AF_INET:
 4531                 {
 4532                         struct sockaddr_in *sin;
 4533 
 4534                         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
 4535                         sin->sin_family = AF_INET;
 4536                         sin->sin_len = sizeof(*sin);
 4537                         sin->sin_port = ((struct sockaddr_in *)&store)->sin_port;
 4538                         sin->sin_addr = ((struct sockaddr_in *)&store)->sin_addr;
 4539                         *addr = (struct sockaddr *)sin;
 4540                         break;
 4541                 }
 4542 #ifdef INET6
 4543         case AF_INET6:
 4544                 {
 4545                         struct sockaddr_in6 *sin6;
 4546 
 4547                         SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6);
 4548                         sin6->sin6_family = AF_INET6;
 4549                         sin6->sin6_len = sizeof(*sin6);
 4550                         sin6->sin6_port = ((struct sockaddr_in6 *)&store)->sin6_port;
 4551 
 4552                         sin6->sin6_addr = ((struct sockaddr_in6 *)&store)->sin6_addr;
 4553                         if ((error = sa6_recoverscope(sin6)) != 0) {
 4554                                 SCTP_FREE_SONAME(sin6);
 4555                                 return (error);
 4556                         }
 4557                         *addr = (struct sockaddr *)sin6;
 4558                         break;
 4559                 }
 4560 #endif
 4561         default:
 4562                 /* TSNH */
 4563                 break;
 4564         }
 4565         /* Wake any delayed sleep action */
 4566         if (inp->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE) {
 4567                 SCTP_INP_WLOCK(inp);
 4568                 inp->sctp_flags &= ~SCTP_PCB_FLAGS_DONT_WAKE;
 4569                 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT) {
 4570                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
 4571                         SCTP_INP_WUNLOCK(inp);
 4572                         SOCKBUF_LOCK(&inp->sctp_socket->so_snd);
 4573                         if (sowriteable(inp->sctp_socket)) {
 4574                                 sowwakeup_locked(inp->sctp_socket);
 4575                         } else {
 4576                                 SOCKBUF_UNLOCK(&inp->sctp_socket->so_snd);
 4577                         }
 4578                         SCTP_INP_WLOCK(inp);
 4579                 }
 4580                 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT) {
 4581                         inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
 4582                         SCTP_INP_WUNLOCK(inp);
 4583                         SOCKBUF_LOCK(&inp->sctp_socket->so_rcv);
 4584                         if (soreadable(inp->sctp_socket)) {
 4585                                 sctp_defered_wakeup_cnt++;
 4586                                 sorwakeup_locked(inp->sctp_socket);
 4587                         } else {
 4588                                 SOCKBUF_UNLOCK(&inp->sctp_socket->so_rcv);
 4589                         }
 4590                         SCTP_INP_WLOCK(inp);
 4591                 }
 4592                 SCTP_INP_WUNLOCK(inp);
 4593         }
 4594         return (0);
 4595 }
 4596 
 4597 int
 4598 sctp_ingetaddr(struct socket *so, struct sockaddr **addr)
 4599 {
 4600         struct sockaddr_in *sin;
 4601         uint32_t vrf_id;
 4602         struct sctp_inpcb *inp;
 4603         struct sctp_ifa *sctp_ifa;
 4604 
 4605         /*
 4606          * Do the malloc first in case it blocks.
 4607          */
 4608         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
 4609         sin->sin_family = AF_INET;
 4610         sin->sin_len = sizeof(*sin);
 4611         inp = (struct sctp_inpcb *)so->so_pcb;
 4612         if (!inp) {
 4613                 SCTP_FREE_SONAME(sin);
 4614                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4615                 return ECONNRESET;
 4616         }
 4617         SCTP_INP_RLOCK(inp);
 4618         sin->sin_port = inp->sctp_lport;
 4619         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
 4620                 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
 4621                         struct sctp_tcb *stcb;
 4622                         struct sockaddr_in *sin_a;
 4623                         struct sctp_nets *net;
 4624                         int fnd;
 4625 
 4626                         stcb = LIST_FIRST(&inp->sctp_asoc_list);
 4627                         if (stcb == NULL) {
 4628                                 goto notConn;
 4629                         }
 4630                         fnd = 0;
 4631                         sin_a = NULL;
 4632                         SCTP_TCB_LOCK(stcb);
 4633                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 4634                                 sin_a = (struct sockaddr_in *)&net->ro._l_addr;
 4635                                 if (sin_a == NULL)
 4636                                         /* this will make coverity happy */
 4637                                         continue;
 4638 
 4639                                 if (sin_a->sin_family == AF_INET) {
 4640                                         fnd = 1;
 4641                                         break;
 4642                                 }
 4643                         }
 4644                         if ((!fnd) || (sin_a == NULL)) {
 4645                                 /* punt */
 4646                                 SCTP_TCB_UNLOCK(stcb);
 4647                                 goto notConn;
 4648                         }
 4649                         vrf_id = inp->def_vrf_id;
 4650                         sctp_ifa = sctp_source_address_selection(inp,
 4651                             stcb,
 4652                             (sctp_route_t *) & net->ro,
 4653                             net, 0, vrf_id);
 4654                         if (sctp_ifa) {
 4655                                 sin->sin_addr = sctp_ifa->address.sin.sin_addr;
 4656                                 sctp_free_ifa(sctp_ifa);
 4657                         }
 4658                         SCTP_TCB_UNLOCK(stcb);
 4659                 } else {
 4660                         /* For the bound all case you get back 0 */
 4661         notConn:
 4662                         sin->sin_addr.s_addr = 0;
 4663                 }
 4664 
 4665         } else {
 4666                 /* Take the first IPv4 address in the list */
 4667                 struct sctp_laddr *laddr;
 4668                 int fnd = 0;
 4669 
 4670                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
 4671                         if (laddr->ifa->address.sa.sa_family == AF_INET) {
 4672                                 struct sockaddr_in *sin_a;
 4673 
 4674                                 sin_a = (struct sockaddr_in *)&laddr->ifa->address.sa;
 4675                                 sin->sin_addr = sin_a->sin_addr;
 4676                                 fnd = 1;
 4677                                 break;
 4678                         }
 4679                 }
 4680                 if (!fnd) {
 4681                         SCTP_FREE_SONAME(sin);
 4682                         SCTP_INP_RUNLOCK(inp);
 4683                         SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
 4684                         return ENOENT;
 4685                 }
 4686         }
 4687         SCTP_INP_RUNLOCK(inp);
 4688         (*addr) = (struct sockaddr *)sin;
 4689         return (0);
 4690 }
 4691 
 4692 int
 4693 sctp_peeraddr(struct socket *so, struct sockaddr **addr)
 4694 {
 4695         struct sockaddr_in *sin = (struct sockaddr_in *)*addr;
 4696         int fnd;
 4697         struct sockaddr_in *sin_a;
 4698         struct sctp_inpcb *inp;
 4699         struct sctp_tcb *stcb;
 4700         struct sctp_nets *net;
 4701 
 4702         /* Do the malloc first in case it blocks. */
 4703         inp = (struct sctp_inpcb *)so->so_pcb;
 4704         if ((inp == NULL) ||
 4705             ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) {
 4706                 /* UDP type and listeners will drop out here */
 4707                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOTCONN);
 4708                 return (ENOTCONN);
 4709         }
 4710         SCTP_MALLOC_SONAME(sin, struct sockaddr_in *, sizeof *sin);
 4711         sin->sin_family = AF_INET;
 4712         sin->sin_len = sizeof(*sin);
 4713 
 4714         /* We must recapture incase we blocked */
 4715         inp = (struct sctp_inpcb *)so->so_pcb;
 4716         if (!inp) {
 4717                 SCTP_FREE_SONAME(sin);
 4718                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4719                 return ECONNRESET;
 4720         }
 4721         SCTP_INP_RLOCK(inp);
 4722         stcb = LIST_FIRST(&inp->sctp_asoc_list);
 4723         if (stcb) {
 4724                 SCTP_TCB_LOCK(stcb);
 4725         }
 4726         SCTP_INP_RUNLOCK(inp);
 4727         if (stcb == NULL) {
 4728                 SCTP_FREE_SONAME(sin);
 4729                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, EINVAL);
 4730                 return ECONNRESET;
 4731         }
 4732         fnd = 0;
 4733         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 4734                 sin_a = (struct sockaddr_in *)&net->ro._l_addr;
 4735                 if (sin_a->sin_family == AF_INET) {
 4736                         fnd = 1;
 4737                         sin->sin_port = stcb->rport;
 4738                         sin->sin_addr = sin_a->sin_addr;
 4739                         break;
 4740                 }
 4741         }
 4742         SCTP_TCB_UNLOCK(stcb);
 4743         if (!fnd) {
 4744                 /* No IPv4 address */
 4745                 SCTP_FREE_SONAME(sin);
 4746                 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_USRREQ, ENOENT);
 4747                 return ENOENT;
 4748         }
 4749         (*addr) = (struct sockaddr *)sin;
 4750         return (0);
 4751 }
 4752 
 4753 struct pr_usrreqs sctp_usrreqs = {
 4754         .pru_abort = sctp_abort,
 4755         .pru_accept = sctp_accept,
 4756         .pru_attach = sctp_attach,
 4757         .pru_bind = sctp_bind,
 4758         .pru_connect = sctp_connect,
 4759         .pru_control = in_control,
 4760         .pru_close = sctp_close,
 4761         .pru_detach = sctp_close,
 4762         .pru_sopoll = sopoll_generic,
 4763         .pru_flush = sctp_flush,
 4764         .pru_disconnect = sctp_disconnect,
 4765         .pru_listen = sctp_listen,
 4766         .pru_peeraddr = sctp_peeraddr,
 4767         .pru_send = sctp_sendm,
 4768         .pru_shutdown = sctp_shutdown,
 4769         .pru_sockaddr = sctp_ingetaddr,
 4770         .pru_sosend = sctp_sosend,
 4771         .pru_soreceive = sctp_soreceive
 4772 };

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