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

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    1 /*-
    2  * Copyright (c) 2007, by Cisco Systems, Inc. All rights reserved.
    3  * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
    4  * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions are met:
    8  *
    9  * a) Redistributions of source code must retain the above copyright notice,
   10  *    this list of conditions and the following disclaimer.
   11  *
   12  * b) Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in
   14  *    the documentation and/or other materials provided with the distribution.
   15  *
   16  * c) Neither the name of Cisco Systems, Inc. nor the names of its
   17  *    contributors may be used to endorse or promote products derived
   18  *    from this software without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
   22  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
   24  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   30  * THE POSSIBILITY OF SUCH DAMAGE.
   31  */
   32 
   33 #include <sys/cdefs.h>
   34 __FBSDID("$FreeBSD: releng/11.1/sys/netinet/sctp_sysctl.c 310773 2016-12-29 11:32:42Z tuexen $");
   35 
   36 #include <netinet/sctp_os.h>
   37 #include <netinet/sctp.h>
   38 #include <netinet/sctp_constants.h>
   39 #include <netinet/sctp_sysctl.h>
   40 #include <netinet/sctp_pcb.h>
   41 #include <netinet/sctputil.h>
   42 #include <netinet/sctp_output.h>
   43 #include <sys/smp.h>
   44 #include <sys/sysctl.h>
   45 
   46 FEATURE(sctp, "Stream Control Transmission Protocol");
   47 
   48 /*
   49  * sysctl tunable variables
   50  */
   51 
   52 void
   53 sctp_init_sysctls()
   54 {
   55         SCTP_BASE_SYSCTL(sctp_sendspace) = SCTPCTL_MAXDGRAM_DEFAULT;
   56         SCTP_BASE_SYSCTL(sctp_recvspace) = SCTPCTL_RECVSPACE_DEFAULT;
   57         SCTP_BASE_SYSCTL(sctp_auto_asconf) = SCTPCTL_AUTOASCONF_DEFAULT;
   58         SCTP_BASE_SYSCTL(sctp_multiple_asconfs) = SCTPCTL_MULTIPLEASCONFS_DEFAULT;
   59         SCTP_BASE_SYSCTL(sctp_ecn_enable) = SCTPCTL_ECN_ENABLE_DEFAULT;
   60         SCTP_BASE_SYSCTL(sctp_pr_enable) = SCTPCTL_PR_ENABLE_DEFAULT;
   61         SCTP_BASE_SYSCTL(sctp_auth_enable) = SCTPCTL_AUTH_ENABLE_DEFAULT;
   62         SCTP_BASE_SYSCTL(sctp_asconf_enable) = SCTPCTL_ASCONF_ENABLE_DEFAULT;
   63         SCTP_BASE_SYSCTL(sctp_reconfig_enable) = SCTPCTL_RECONFIG_ENABLE_DEFAULT;
   64         SCTP_BASE_SYSCTL(sctp_nrsack_enable) = SCTPCTL_NRSACK_ENABLE_DEFAULT;
   65         SCTP_BASE_SYSCTL(sctp_pktdrop_enable) = SCTPCTL_PKTDROP_ENABLE_DEFAULT;
   66         SCTP_BASE_SYSCTL(sctp_peer_chunk_oh) = SCTPCTL_PEER_CHKOH_DEFAULT;
   67         SCTP_BASE_SYSCTL(sctp_max_burst_default) = SCTPCTL_MAXBURST_DEFAULT;
   68         SCTP_BASE_SYSCTL(sctp_fr_max_burst_default) = SCTPCTL_FRMAXBURST_DEFAULT;
   69         SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue) = SCTPCTL_MAXCHUNKS_DEFAULT;
   70         SCTP_BASE_SYSCTL(sctp_hashtblsize) = SCTPCTL_TCBHASHSIZE_DEFAULT;
   71         SCTP_BASE_SYSCTL(sctp_pcbtblsize) = SCTPCTL_PCBHASHSIZE_DEFAULT;
   72         SCTP_BASE_SYSCTL(sctp_min_split_point) = SCTPCTL_MIN_SPLIT_POINT_DEFAULT;
   73         SCTP_BASE_SYSCTL(sctp_chunkscale) = SCTPCTL_CHUNKSCALE_DEFAULT;
   74         SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default) = SCTPCTL_DELAYED_SACK_TIME_DEFAULT;
   75         SCTP_BASE_SYSCTL(sctp_sack_freq_default) = SCTPCTL_SACK_FREQ_DEFAULT;
   76         SCTP_BASE_SYSCTL(sctp_system_free_resc_limit) = SCTPCTL_SYS_RESOURCE_DEFAULT;
   77         SCTP_BASE_SYSCTL(sctp_asoc_free_resc_limit) = SCTPCTL_ASOC_RESOURCE_DEFAULT;
   78         SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default) = SCTPCTL_HEARTBEAT_INTERVAL_DEFAULT;
   79         SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default) = SCTPCTL_PMTU_RAISE_TIME_DEFAULT;
   80         SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default) = SCTPCTL_SHUTDOWN_GUARD_TIME_DEFAULT;
   81         SCTP_BASE_SYSCTL(sctp_secret_lifetime_default) = SCTPCTL_SECRET_LIFETIME_DEFAULT;
   82         SCTP_BASE_SYSCTL(sctp_rto_max_default) = SCTPCTL_RTO_MAX_DEFAULT;
   83         SCTP_BASE_SYSCTL(sctp_rto_min_default) = SCTPCTL_RTO_MIN_DEFAULT;
   84         SCTP_BASE_SYSCTL(sctp_rto_initial_default) = SCTPCTL_RTO_INITIAL_DEFAULT;
   85         SCTP_BASE_SYSCTL(sctp_init_rto_max_default) = SCTPCTL_INIT_RTO_MAX_DEFAULT;
   86         SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default) = SCTPCTL_VALID_COOKIE_LIFE_DEFAULT;
   87         SCTP_BASE_SYSCTL(sctp_init_rtx_max_default) = SCTPCTL_INIT_RTX_MAX_DEFAULT;
   88         SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default) = SCTPCTL_ASSOC_RTX_MAX_DEFAULT;
   89         SCTP_BASE_SYSCTL(sctp_path_rtx_max_default) = SCTPCTL_PATH_RTX_MAX_DEFAULT;
   90         SCTP_BASE_SYSCTL(sctp_path_pf_threshold) = SCTPCTL_PATH_PF_THRESHOLD_DEFAULT;
   91         SCTP_BASE_SYSCTL(sctp_add_more_threshold) = SCTPCTL_ADD_MORE_ON_OUTPUT_DEFAULT;
   92         SCTP_BASE_SYSCTL(sctp_nr_incoming_streams_default) = SCTPCTL_INCOMING_STREAMS_DEFAULT;
   93         SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default) = SCTPCTL_OUTGOING_STREAMS_DEFAULT;
   94         SCTP_BASE_SYSCTL(sctp_cmt_on_off) = SCTPCTL_CMT_ON_OFF_DEFAULT;
   95         SCTP_BASE_SYSCTL(sctp_cmt_use_dac) = SCTPCTL_CMT_USE_DAC_DEFAULT;
   96         SCTP_BASE_SYSCTL(sctp_use_cwnd_based_maxburst) = SCTPCTL_CWND_MAXBURST_DEFAULT;
   97         SCTP_BASE_SYSCTL(sctp_nat_friendly) = SCTPCTL_NAT_FRIENDLY_DEFAULT;
   98         SCTP_BASE_SYSCTL(sctp_L2_abc_variable) = SCTPCTL_ABC_L_VAR_DEFAULT;
   99         SCTP_BASE_SYSCTL(sctp_mbuf_threshold_count) = SCTPCTL_MAX_CHAINED_MBUFS_DEFAULT;
  100         SCTP_BASE_SYSCTL(sctp_do_drain) = SCTPCTL_DO_SCTP_DRAIN_DEFAULT;
  101         SCTP_BASE_SYSCTL(sctp_hb_maxburst) = SCTPCTL_HB_MAX_BURST_DEFAULT;
  102         SCTP_BASE_SYSCTL(sctp_abort_if_one_2_one_hits_limit) = SCTPCTL_ABORT_AT_LIMIT_DEFAULT;
  103         SCTP_BASE_SYSCTL(sctp_min_residual) = SCTPCTL_MIN_RESIDUAL_DEFAULT;
  104         SCTP_BASE_SYSCTL(sctp_max_retran_chunk) = SCTPCTL_MAX_RETRAN_CHUNK_DEFAULT;
  105         SCTP_BASE_SYSCTL(sctp_logging_level) = SCTPCTL_LOGGING_LEVEL_DEFAULT;
  106         SCTP_BASE_SYSCTL(sctp_default_cc_module) = SCTPCTL_DEFAULT_CC_MODULE_DEFAULT;
  107         SCTP_BASE_SYSCTL(sctp_default_ss_module) = SCTPCTL_DEFAULT_SS_MODULE_DEFAULT;
  108         SCTP_BASE_SYSCTL(sctp_default_frag_interleave) = SCTPCTL_DEFAULT_FRAG_INTERLEAVE_DEFAULT;
  109         SCTP_BASE_SYSCTL(sctp_mobility_base) = SCTPCTL_MOBILITY_BASE_DEFAULT;
  110         SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) = SCTPCTL_MOBILITY_FASTHANDOFF_DEFAULT;
  111         SCTP_BASE_SYSCTL(sctp_vtag_time_wait) = SCTPCTL_TIME_WAIT_DEFAULT;
  112         SCTP_BASE_SYSCTL(sctp_buffer_splitting) = SCTPCTL_BUFFER_SPLITTING_DEFAULT;
  113         SCTP_BASE_SYSCTL(sctp_initial_cwnd) = SCTPCTL_INITIAL_CWND_DEFAULT;
  114         SCTP_BASE_SYSCTL(sctp_rttvar_bw) = SCTPCTL_RTTVAR_BW_DEFAULT;
  115         SCTP_BASE_SYSCTL(sctp_rttvar_rtt) = SCTPCTL_RTTVAR_RTT_DEFAULT;
  116         SCTP_BASE_SYSCTL(sctp_rttvar_eqret) = SCTPCTL_RTTVAR_EQRET_DEFAULT;
  117         SCTP_BASE_SYSCTL(sctp_steady_step) = SCTPCTL_RTTVAR_STEADYS_DEFAULT;
  118         SCTP_BASE_SYSCTL(sctp_use_dccc_ecn) = SCTPCTL_RTTVAR_DCCCECN_DEFAULT;
  119         SCTP_BASE_SYSCTL(sctp_blackhole) = SCTPCTL_BLACKHOLE_DEFAULT;
  120         SCTP_BASE_SYSCTL(sctp_diag_info_code) = SCTPCTL_DIAG_INFO_CODE_DEFAULT;
  121 #if defined(SCTP_LOCAL_TRACE_BUF)
  122         memset(&SCTP_BASE_SYSCTL(sctp_log), 0, sizeof(struct sctp_log));
  123 #endif
  124         SCTP_BASE_SYSCTL(sctp_udp_tunneling_port) = SCTPCTL_UDP_TUNNELING_PORT_DEFAULT;
  125         SCTP_BASE_SYSCTL(sctp_enable_sack_immediately) = SCTPCTL_SACK_IMMEDIATELY_ENABLE_DEFAULT;
  126         SCTP_BASE_SYSCTL(sctp_inits_include_nat_friendly) = SCTPCTL_NAT_FRIENDLY_INITS_DEFAULT;
  127 #if defined(SCTP_DEBUG)
  128         SCTP_BASE_SYSCTL(sctp_debug_on) = SCTPCTL_DEBUG_DEFAULT;
  129 #endif
  130 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
  131         SCTP_BASE_SYSCTL(sctp_output_unlocked) = SCTPCTL_OUTPUT_UNLOCKED_DEFAULT;
  132 #endif
  133 }
  134 
  135 
  136 /* It returns an upper limit. No filtering is done here */
  137 static unsigned int
  138 sctp_sysctl_number_of_addresses(struct sctp_inpcb *inp)
  139 {
  140         unsigned int cnt;
  141         struct sctp_vrf *vrf;
  142         struct sctp_ifn *sctp_ifn;
  143         struct sctp_ifa *sctp_ifa;
  144         struct sctp_laddr *laddr;
  145 
  146         cnt = 0;
  147         /* neither Mac OS X nor FreeBSD support mulitple routing functions */
  148         if ((vrf = sctp_find_vrf(inp->def_vrf_id)) == NULL) {
  149                 return (0);
  150         }
  151         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
  152                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
  153                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
  154                                 switch (sctp_ifa->address.sa.sa_family) {
  155 #ifdef INET
  156                                 case AF_INET:
  157 #endif
  158 #ifdef INET6
  159                                 case AF_INET6:
  160 #endif
  161                                         cnt++;
  162                                         break;
  163                                 default:
  164                                         break;
  165                                 }
  166                         }
  167                 }
  168         } else {
  169                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
  170                         switch (laddr->ifa->address.sa.sa_family) {
  171 #ifdef INET
  172                         case AF_INET:
  173 #endif
  174 #ifdef INET6
  175                         case AF_INET6:
  176 #endif
  177                                 cnt++;
  178                                 break;
  179                         default:
  180                                 break;
  181                         }
  182                 }
  183         }
  184         return (cnt);
  185 }
  186 
  187 static int
  188 sctp_sysctl_copy_out_local_addresses(struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sysctl_req *req)
  189 {
  190         struct sctp_ifn *sctp_ifn;
  191         struct sctp_ifa *sctp_ifa;
  192         int loopback_scope, ipv4_local_scope, local_scope, site_scope;
  193         int ipv4_addr_legal, ipv6_addr_legal;
  194         struct sctp_vrf *vrf;
  195         struct xsctp_laddr xladdr;
  196         struct sctp_laddr *laddr;
  197         int error;
  198 
  199         /* Turn on all the appropriate scope */
  200         if (stcb) {
  201                 /* use association specific values */
  202                 loopback_scope = stcb->asoc.scope.loopback_scope;
  203                 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
  204                 local_scope = stcb->asoc.scope.local_scope;
  205                 site_scope = stcb->asoc.scope.site_scope;
  206                 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
  207                 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
  208         } else {
  209                 /* Use generic values for endpoints. */
  210                 loopback_scope = 1;
  211                 ipv4_local_scope = 1;
  212                 local_scope = 1;
  213                 site_scope = 1;
  214                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
  215                         ipv6_addr_legal = 1;
  216                         if (SCTP_IPV6_V6ONLY(inp)) {
  217                                 ipv4_addr_legal = 0;
  218                         } else {
  219                                 ipv4_addr_legal = 1;
  220                         }
  221                 } else {
  222                         ipv6_addr_legal = 0;
  223                         ipv4_addr_legal = 1;
  224                 }
  225         }
  226 
  227         /* neither Mac OS X nor FreeBSD support mulitple routing functions */
  228         if ((vrf = sctp_find_vrf(inp->def_vrf_id)) == NULL) {
  229                 SCTP_INP_RUNLOCK(inp);
  230                 SCTP_INP_INFO_RUNLOCK();
  231                 return (-1);
  232         }
  233         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
  234                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
  235                         if ((loopback_scope == 0) && SCTP_IFN_IS_IFT_LOOP(sctp_ifn))
  236                                 /* Skip loopback if loopback_scope not set */
  237                                 continue;
  238                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
  239                                 if (stcb) {
  240                                         /*
  241                                          * ignore if blacklisted at
  242                                          * association level
  243                                          */
  244                                         if (sctp_is_addr_restricted(stcb, sctp_ifa))
  245                                                 continue;
  246                                 }
  247                                 switch (sctp_ifa->address.sa.sa_family) {
  248 #ifdef INET
  249                                 case AF_INET:
  250                                         if (ipv4_addr_legal) {
  251                                                 struct sockaddr_in *sin;
  252 
  253                                                 sin = &sctp_ifa->address.sin;
  254                                                 if (sin->sin_addr.s_addr == 0)
  255                                                         continue;
  256                                                 if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
  257                                                     &sin->sin_addr) != 0) {
  258                                                         continue;
  259                                                 }
  260                                                 if ((ipv4_local_scope == 0) && (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)))
  261                                                         continue;
  262                                         } else {
  263                                                 continue;
  264                                         }
  265                                         break;
  266 #endif
  267 #ifdef INET6
  268                                 case AF_INET6:
  269                                         if (ipv6_addr_legal) {
  270                                                 struct sockaddr_in6 *sin6;
  271 
  272                                                 sin6 = &sctp_ifa->address.sin6;
  273                                                 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
  274                                                         continue;
  275                                                 if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
  276                                                     &sin6->sin6_addr) != 0) {
  277                                                         continue;
  278                                                 }
  279                                                 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
  280                                                         if (local_scope == 0)
  281                                                                 continue;
  282                                                 }
  283                                                 if ((site_scope == 0) && (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)))
  284                                                         continue;
  285                                         } else {
  286                                                 continue;
  287                                         }
  288                                         break;
  289 #endif
  290                                 default:
  291                                         continue;
  292                                 }
  293                                 memset((void *)&xladdr, 0, sizeof(struct xsctp_laddr));
  294                                 memcpy((void *)&xladdr.address, (const void *)&sctp_ifa->address, sizeof(union sctp_sockstore));
  295                                 SCTP_INP_RUNLOCK(inp);
  296                                 SCTP_INP_INFO_RUNLOCK();
  297                                 error = SYSCTL_OUT(req, &xladdr, sizeof(struct xsctp_laddr));
  298                                 if (error) {
  299                                         return (error);
  300                                 } else {
  301                                         SCTP_INP_INFO_RLOCK();
  302                                         SCTP_INP_RLOCK(inp);
  303                                 }
  304                         }
  305                 }
  306         } else {
  307                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
  308                         /* ignore if blacklisted at association level */
  309                         if (stcb && sctp_is_addr_restricted(stcb, laddr->ifa))
  310                                 continue;
  311                         memset((void *)&xladdr, 0, sizeof(struct xsctp_laddr));
  312                         memcpy((void *)&xladdr.address, (const void *)&laddr->ifa->address, sizeof(union sctp_sockstore));
  313                         xladdr.start_time.tv_sec = (uint32_t)laddr->start_time.tv_sec;
  314                         xladdr.start_time.tv_usec = (uint32_t)laddr->start_time.tv_usec;
  315                         SCTP_INP_RUNLOCK(inp);
  316                         SCTP_INP_INFO_RUNLOCK();
  317                         error = SYSCTL_OUT(req, &xladdr, sizeof(struct xsctp_laddr));
  318                         if (error) {
  319                                 return (error);
  320                         } else {
  321                                 SCTP_INP_INFO_RLOCK();
  322                                 SCTP_INP_RLOCK(inp);
  323                         }
  324                 }
  325         }
  326         memset((void *)&xladdr, 0, sizeof(struct xsctp_laddr));
  327         xladdr.last = 1;
  328         SCTP_INP_RUNLOCK(inp);
  329         SCTP_INP_INFO_RUNLOCK();
  330         error = SYSCTL_OUT(req, &xladdr, sizeof(struct xsctp_laddr));
  331 
  332         if (error) {
  333                 return (error);
  334         } else {
  335                 SCTP_INP_INFO_RLOCK();
  336                 SCTP_INP_RLOCK(inp);
  337                 return (0);
  338         }
  339 }
  340 
  341 /*
  342  * sysctl functions
  343  */
  344 static int
  345 sctp_sysctl_handle_assoclist(SYSCTL_HANDLER_ARGS)
  346 {
  347         unsigned int number_of_endpoints;
  348         unsigned int number_of_local_addresses;
  349         unsigned int number_of_associations;
  350         unsigned int number_of_remote_addresses;
  351         unsigned int n;
  352         int error;
  353         struct sctp_inpcb *inp;
  354         struct sctp_tcb *stcb;
  355         struct sctp_nets *net;
  356         struct xsctp_inpcb xinpcb;
  357         struct xsctp_tcb xstcb;
  358         struct xsctp_raddr xraddr;
  359         struct socket *so;
  360 
  361         number_of_endpoints = 0;
  362         number_of_local_addresses = 0;
  363         number_of_associations = 0;
  364         number_of_remote_addresses = 0;
  365 
  366         SCTP_INP_INFO_RLOCK();
  367         if (req->oldptr == NULL) {
  368                 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
  369                         SCTP_INP_RLOCK(inp);
  370                         number_of_endpoints++;
  371                         number_of_local_addresses += sctp_sysctl_number_of_addresses(inp);
  372                         LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
  373                                 number_of_associations++;
  374                                 number_of_local_addresses += sctp_sysctl_number_of_addresses(inp);
  375                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
  376                                         number_of_remote_addresses++;
  377                                 }
  378                         }
  379                         SCTP_INP_RUNLOCK(inp);
  380                 }
  381                 SCTP_INP_INFO_RUNLOCK();
  382                 n = (number_of_endpoints + 1) * sizeof(struct xsctp_inpcb) +
  383                     (number_of_local_addresses + number_of_endpoints + number_of_associations) * sizeof(struct xsctp_laddr) +
  384                     (number_of_associations + number_of_endpoints) * sizeof(struct xsctp_tcb) +
  385                     (number_of_remote_addresses + number_of_associations) * sizeof(struct xsctp_raddr);
  386 
  387                 /* request some more memory than needed */
  388                 req->oldidx = (n + n / 8);
  389                 return (0);
  390         }
  391         if (req->newptr != NULL) {
  392                 SCTP_INP_INFO_RUNLOCK();
  393                 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_SYSCTL, EPERM);
  394                 return (EPERM);
  395         }
  396         LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
  397                 SCTP_INP_RLOCK(inp);
  398                 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
  399                         /* if its allgone it is being freed - skip it  */
  400                         goto skip;
  401                 }
  402                 xinpcb.last = 0;
  403                 xinpcb.local_port = ntohs(inp->sctp_lport);
  404                 xinpcb.flags = inp->sctp_flags;
  405                 xinpcb.features = inp->sctp_features;
  406                 xinpcb.total_sends = inp->total_sends;
  407                 xinpcb.total_recvs = inp->total_recvs;
  408                 xinpcb.total_nospaces = inp->total_nospaces;
  409                 xinpcb.fragmentation_point = inp->sctp_frag_point;
  410                 xinpcb.socket = inp->sctp_socket;
  411                 so = inp->sctp_socket;
  412                 if ((so == NULL) ||
  413                     (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
  414                         xinpcb.qlen = 0;
  415                         xinpcb.maxqlen = 0;
  416                 } else {
  417                         xinpcb.qlen = so->so_qlen;
  418                         xinpcb.qlen_old = so->so_qlen > USHRT_MAX ?
  419                             USHRT_MAX : (uint16_t)so->so_qlen;
  420                         xinpcb.maxqlen = so->so_qlimit;
  421                         xinpcb.maxqlen_old = so->so_qlimit > USHRT_MAX ?
  422                             USHRT_MAX : (uint16_t)so->so_qlimit;
  423                 }
  424                 SCTP_INP_INCR_REF(inp);
  425                 SCTP_INP_RUNLOCK(inp);
  426                 SCTP_INP_INFO_RUNLOCK();
  427                 error = SYSCTL_OUT(req, &xinpcb, sizeof(struct xsctp_inpcb));
  428                 if (error) {
  429                         SCTP_INP_DECR_REF(inp);
  430                         return (error);
  431                 }
  432                 SCTP_INP_INFO_RLOCK();
  433                 SCTP_INP_RLOCK(inp);
  434                 error = sctp_sysctl_copy_out_local_addresses(inp, NULL, req);
  435                 if (error) {
  436                         SCTP_INP_DECR_REF(inp);
  437                         return (error);
  438                 }
  439                 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
  440                         SCTP_TCB_LOCK(stcb);
  441                         atomic_add_int(&stcb->asoc.refcnt, 1);
  442                         SCTP_TCB_UNLOCK(stcb);
  443                         xstcb.last = 0;
  444                         xstcb.local_port = ntohs(inp->sctp_lport);
  445                         xstcb.remote_port = ntohs(stcb->rport);
  446                         if (stcb->asoc.primary_destination != NULL)
  447                                 xstcb.primary_addr = stcb->asoc.primary_destination->ro._l_addr;
  448                         xstcb.heartbeat_interval = stcb->asoc.heart_beat_delay;
  449                         xstcb.state = (uint32_t)sctp_map_assoc_state(stcb->asoc.state);
  450                         /* 7.0 does not support these */
  451                         xstcb.assoc_id = sctp_get_associd(stcb);
  452                         xstcb.peers_rwnd = stcb->asoc.peers_rwnd;
  453                         xstcb.in_streams = stcb->asoc.streamincnt;
  454                         xstcb.out_streams = stcb->asoc.streamoutcnt;
  455                         xstcb.max_nr_retrans = stcb->asoc.overall_error_count;
  456                         xstcb.primary_process = 0;      /* not really supported
  457                                                          * yet */
  458                         xstcb.T1_expireries = stcb->asoc.timoinit + stcb->asoc.timocookie;
  459                         xstcb.T2_expireries = stcb->asoc.timoshutdown + stcb->asoc.timoshutdownack;
  460                         xstcb.retransmitted_tsns = stcb->asoc.marked_retrans;
  461                         xstcb.start_time.tv_sec = (uint32_t)stcb->asoc.start_time.tv_sec;
  462                         xstcb.start_time.tv_usec = (uint32_t)stcb->asoc.start_time.tv_usec;
  463                         xstcb.discontinuity_time.tv_sec = (uint32_t)stcb->asoc.discontinuity_time.tv_sec;
  464                         xstcb.discontinuity_time.tv_usec = (uint32_t)stcb->asoc.discontinuity_time.tv_usec;
  465                         xstcb.total_sends = stcb->total_sends;
  466                         xstcb.total_recvs = stcb->total_recvs;
  467                         xstcb.local_tag = stcb->asoc.my_vtag;
  468                         xstcb.remote_tag = stcb->asoc.peer_vtag;
  469                         xstcb.initial_tsn = stcb->asoc.init_seq_number;
  470                         xstcb.highest_tsn = stcb->asoc.sending_seq - 1;
  471                         xstcb.cumulative_tsn = stcb->asoc.last_acked_seq;
  472                         xstcb.cumulative_tsn_ack = stcb->asoc.cumulative_tsn;
  473                         xstcb.mtu = stcb->asoc.smallest_mtu;
  474                         xstcb.refcnt = stcb->asoc.refcnt;
  475                         SCTP_INP_RUNLOCK(inp);
  476                         SCTP_INP_INFO_RUNLOCK();
  477                         error = SYSCTL_OUT(req, &xstcb, sizeof(struct xsctp_tcb));
  478                         if (error) {
  479                                 SCTP_INP_DECR_REF(inp);
  480                                 atomic_subtract_int(&stcb->asoc.refcnt, 1);
  481                                 return (error);
  482                         }
  483                         SCTP_INP_INFO_RLOCK();
  484                         SCTP_INP_RLOCK(inp);
  485                         error = sctp_sysctl_copy_out_local_addresses(inp, stcb, req);
  486                         if (error) {
  487                                 SCTP_INP_DECR_REF(inp);
  488                                 atomic_subtract_int(&stcb->asoc.refcnt, 1);
  489                                 return (error);
  490                         }
  491                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
  492                                 xraddr.last = 0;
  493                                 xraddr.address = net->ro._l_addr;
  494                                 xraddr.active = ((net->dest_state & SCTP_ADDR_REACHABLE) == SCTP_ADDR_REACHABLE);
  495                                 xraddr.confirmed = ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0);
  496                                 xraddr.heartbeat_enabled = ((net->dest_state & SCTP_ADDR_NOHB) == 0);
  497                                 xraddr.potentially_failed = ((net->dest_state & SCTP_ADDR_PF) == SCTP_ADDR_PF);
  498                                 xraddr.rto = net->RTO;
  499                                 xraddr.max_path_rtx = net->failure_threshold;
  500                                 xraddr.rtx = net->marked_retrans;
  501                                 xraddr.error_counter = net->error_count;
  502                                 xraddr.cwnd = net->cwnd;
  503                                 xraddr.flight_size = net->flight_size;
  504                                 xraddr.mtu = net->mtu;
  505                                 xraddr.rtt = net->rtt / 1000;
  506                                 xraddr.heartbeat_interval = net->heart_beat_delay;
  507                                 xraddr.ssthresh = net->ssthresh;
  508                                 xraddr.start_time.tv_sec = (uint32_t)net->start_time.tv_sec;
  509                                 xraddr.start_time.tv_usec = (uint32_t)net->start_time.tv_usec;
  510                                 SCTP_INP_RUNLOCK(inp);
  511                                 SCTP_INP_INFO_RUNLOCK();
  512                                 error = SYSCTL_OUT(req, &xraddr, sizeof(struct xsctp_raddr));
  513                                 if (error) {
  514                                         SCTP_INP_DECR_REF(inp);
  515                                         atomic_subtract_int(&stcb->asoc.refcnt, 1);
  516                                         return (error);
  517                                 }
  518                                 SCTP_INP_INFO_RLOCK();
  519                                 SCTP_INP_RLOCK(inp);
  520                         }
  521                         atomic_subtract_int(&stcb->asoc.refcnt, 1);
  522                         memset((void *)&xraddr, 0, sizeof(struct xsctp_raddr));
  523                         xraddr.last = 1;
  524                         SCTP_INP_RUNLOCK(inp);
  525                         SCTP_INP_INFO_RUNLOCK();
  526                         error = SYSCTL_OUT(req, &xraddr, sizeof(struct xsctp_raddr));
  527                         if (error) {
  528                                 SCTP_INP_DECR_REF(inp);
  529                                 return (error);
  530                         }
  531                         SCTP_INP_INFO_RLOCK();
  532                         SCTP_INP_RLOCK(inp);
  533                 }
  534                 SCTP_INP_DECR_REF(inp);
  535                 SCTP_INP_RUNLOCK(inp);
  536                 SCTP_INP_INFO_RUNLOCK();
  537                 memset((void *)&xstcb, 0, sizeof(struct xsctp_tcb));
  538                 xstcb.last = 1;
  539                 error = SYSCTL_OUT(req, &xstcb, sizeof(struct xsctp_tcb));
  540                 if (error) {
  541                         return (error);
  542                 }
  543 skip:
  544                 SCTP_INP_INFO_RLOCK();
  545         }
  546         SCTP_INP_INFO_RUNLOCK();
  547 
  548         memset((void *)&xinpcb, 0, sizeof(struct xsctp_inpcb));
  549         xinpcb.last = 1;
  550         error = SYSCTL_OUT(req, &xinpcb, sizeof(struct xsctp_inpcb));
  551         return (error);
  552 }
  553 
  554 static int
  555 sctp_sysctl_handle_udp_tunneling(SYSCTL_HANDLER_ARGS)
  556 {
  557         int error;
  558         uint32_t old, new;
  559 
  560         SCTP_INP_INFO_RLOCK();
  561         old = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
  562         SCTP_INP_INFO_RUNLOCK();
  563         new = old;
  564         error = sysctl_handle_int(oidp, &new, 0, req);
  565         if ((error == 0) &&
  566             (req->newptr != NULL)) {
  567 #if (SCTPCTL_UDP_TUNNELING_PORT_MIN == 0)
  568                 if (new > SCTPCTL_UDP_TUNNELING_PORT_MAX) {
  569 #else
  570                 if ((new < SCTPCTL_UDP_TUNNELING_PORT_MIN) ||
  571                     (new > SCTPCTL_UDP_TUNNELING_PORT_MAX)) {
  572 #endif
  573                         error = EINVAL;
  574                 } else {
  575                         SCTP_INP_INFO_WLOCK();
  576                         SCTP_BASE_SYSCTL(sctp_udp_tunneling_port) = new;
  577                         if (old != 0) {
  578                                 sctp_over_udp_stop();
  579                         }
  580                         if (new != 0) {
  581                                 error = sctp_over_udp_start();
  582                         }
  583                         SCTP_INP_INFO_WUNLOCK();
  584                 }
  585         }
  586         return (error);
  587 }
  588 
  589 
  590 static int
  591 sctp_sysctl_handle_auth(SYSCTL_HANDLER_ARGS)
  592 {
  593         int error;
  594         uint32_t new;
  595 
  596         new = SCTP_BASE_SYSCTL(sctp_auth_enable);
  597         error = sysctl_handle_int(oidp, &new, 0, req);
  598         if ((error == 0) &&
  599             (req->newptr != NULL)) {
  600 #if (SCTPCTL_AUTH_ENABLE_MIN == 0)
  601                 if ((new > SCTPCTL_AUTH_ENABLE_MAX) ||
  602                     ((new == 0) && (SCTP_BASE_SYSCTL(sctp_asconf_enable) == 1))) {
  603 #else
  604                 if ((new < SCTPCTL_AUTH_ENABLE_MIN) ||
  605                     (new > SCTPCTL_AUTH_ENABLE_MAX) ||
  606                     ((new == 0) && (SCTP_BASE_SYSCTL(sctp_asconf_enable) == 1))) {
  607 #endif
  608                         error = EINVAL;
  609                 } else {
  610                         SCTP_BASE_SYSCTL(sctp_auth_enable) = new;
  611                 }
  612         }
  613         return (error);
  614 }
  615 
  616 static int
  617 sctp_sysctl_handle_asconf(SYSCTL_HANDLER_ARGS)
  618 {
  619         int error;
  620         uint32_t new;
  621 
  622         new = SCTP_BASE_SYSCTL(sctp_asconf_enable);
  623         error = sysctl_handle_int(oidp, &new, 0, req);
  624         if ((error == 0) &&
  625             (req->newptr != NULL)) {
  626 #if (SCTPCTL_ASCONF_ENABLE_MIN == 0)
  627                 if ((new > SCTPCTL_ASCONF_ENABLE_MAX) ||
  628                     ((new == 1) && (SCTP_BASE_SYSCTL(sctp_auth_enable) == 0))) {
  629 #else
  630                 if ((new < SCTPCTL_ASCONF_ENABLE_MIN) ||
  631                     (new > SCTPCTL_ASCONF_ENABLE_MAX) ||
  632                     ((new == 1) && (SCTP_BASE_SYSCTL(sctp_auth_enable) == 0))) {
  633 #endif
  634                         error = EINVAL;
  635                 } else {
  636                         SCTP_BASE_SYSCTL(sctp_asconf_enable) = new;
  637                 }
  638         }
  639         return (error);
  640 }
  641 
  642 static int
  643 sctp_sysctl_handle_stats(SYSCTL_HANDLER_ARGS)
  644 {
  645         int error;
  646 #if defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
  647         struct sctpstat *sarry;
  648         struct sctpstat sb;
  649         int cpu;
  650 #endif
  651         struct sctpstat sb_temp;
  652 
  653         if ((req->newptr != NULL) &&
  654             (req->newlen != sizeof(struct sctpstat))) {
  655                 return (EINVAL);
  656         }
  657         memset(&sb_temp, 0, sizeof(struct sctpstat));
  658 
  659         if (req->newptr != NULL) {
  660                 error = SYSCTL_IN(req, &sb_temp, sizeof(struct sctpstat));
  661                 if (error != 0) {
  662                         return (error);
  663                 }
  664         }
  665 #if defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
  666         memset(&sb, 0, sizeof(sb));
  667         for (cpu = 0; cpu < mp_maxid; cpu++) {
  668                 sarry = &SCTP_BASE_STATS[cpu];
  669                 if (sarry->sctps_discontinuitytime.tv_sec > sb.sctps_discontinuitytime.tv_sec) {
  670                         sb.sctps_discontinuitytime.tv_sec = sarry->sctps_discontinuitytime.tv_sec;
  671                         sb.sctps_discontinuitytime.tv_usec = sarry->sctps_discontinuitytime.tv_usec;
  672                 }
  673                 sb.sctps_currestab += sarry->sctps_currestab;
  674                 sb.sctps_activeestab += sarry->sctps_activeestab;
  675                 sb.sctps_restartestab += sarry->sctps_restartestab;
  676                 sb.sctps_collisionestab += sarry->sctps_collisionestab;
  677                 sb.sctps_passiveestab += sarry->sctps_passiveestab;
  678                 sb.sctps_aborted += sarry->sctps_aborted;
  679                 sb.sctps_shutdown += sarry->sctps_shutdown;
  680                 sb.sctps_outoftheblue += sarry->sctps_outoftheblue;
  681                 sb.sctps_checksumerrors += sarry->sctps_checksumerrors;
  682                 sb.sctps_outcontrolchunks += sarry->sctps_outcontrolchunks;
  683                 sb.sctps_outorderchunks += sarry->sctps_outorderchunks;
  684                 sb.sctps_outunorderchunks += sarry->sctps_outunorderchunks;
  685                 sb.sctps_incontrolchunks += sarry->sctps_incontrolchunks;
  686                 sb.sctps_inorderchunks += sarry->sctps_inorderchunks;
  687                 sb.sctps_inunorderchunks += sarry->sctps_inunorderchunks;
  688                 sb.sctps_fragusrmsgs += sarry->sctps_fragusrmsgs;
  689                 sb.sctps_reasmusrmsgs += sarry->sctps_reasmusrmsgs;
  690                 sb.sctps_outpackets += sarry->sctps_outpackets;
  691                 sb.sctps_inpackets += sarry->sctps_inpackets;
  692                 sb.sctps_recvpackets += sarry->sctps_recvpackets;
  693                 sb.sctps_recvdatagrams += sarry->sctps_recvdatagrams;
  694                 sb.sctps_recvpktwithdata += sarry->sctps_recvpktwithdata;
  695                 sb.sctps_recvsacks += sarry->sctps_recvsacks;
  696                 sb.sctps_recvdata += sarry->sctps_recvdata;
  697                 sb.sctps_recvdupdata += sarry->sctps_recvdupdata;
  698                 sb.sctps_recvheartbeat += sarry->sctps_recvheartbeat;
  699                 sb.sctps_recvheartbeatack += sarry->sctps_recvheartbeatack;
  700                 sb.sctps_recvecne += sarry->sctps_recvecne;
  701                 sb.sctps_recvauth += sarry->sctps_recvauth;
  702                 sb.sctps_recvauthmissing += sarry->sctps_recvauthmissing;
  703                 sb.sctps_recvivalhmacid += sarry->sctps_recvivalhmacid;
  704                 sb.sctps_recvivalkeyid += sarry->sctps_recvivalkeyid;
  705                 sb.sctps_recvauthfailed += sarry->sctps_recvauthfailed;
  706                 sb.sctps_recvexpress += sarry->sctps_recvexpress;
  707                 sb.sctps_recvexpressm += sarry->sctps_recvexpressm;
  708                 sb.sctps_recvnocrc += sarry->sctps_recvnocrc;
  709                 sb.sctps_recvswcrc += sarry->sctps_recvswcrc;
  710                 sb.sctps_recvhwcrc += sarry->sctps_recvhwcrc;
  711                 sb.sctps_sendpackets += sarry->sctps_sendpackets;
  712                 sb.sctps_sendsacks += sarry->sctps_sendsacks;
  713                 sb.sctps_senddata += sarry->sctps_senddata;
  714                 sb.sctps_sendretransdata += sarry->sctps_sendretransdata;
  715                 sb.sctps_sendfastretrans += sarry->sctps_sendfastretrans;
  716                 sb.sctps_sendmultfastretrans += sarry->sctps_sendmultfastretrans;
  717                 sb.sctps_sendheartbeat += sarry->sctps_sendheartbeat;
  718                 sb.sctps_sendecne += sarry->sctps_sendecne;
  719                 sb.sctps_sendauth += sarry->sctps_sendauth;
  720                 sb.sctps_senderrors += sarry->sctps_senderrors;
  721                 sb.sctps_sendnocrc += sarry->sctps_sendnocrc;
  722                 sb.sctps_sendswcrc += sarry->sctps_sendswcrc;
  723                 sb.sctps_sendhwcrc += sarry->sctps_sendhwcrc;
  724                 sb.sctps_pdrpfmbox += sarry->sctps_pdrpfmbox;
  725                 sb.sctps_pdrpfehos += sarry->sctps_pdrpfehos;
  726                 sb.sctps_pdrpmbda += sarry->sctps_pdrpmbda;
  727                 sb.sctps_pdrpmbct += sarry->sctps_pdrpmbct;
  728                 sb.sctps_pdrpbwrpt += sarry->sctps_pdrpbwrpt;
  729                 sb.sctps_pdrpcrupt += sarry->sctps_pdrpcrupt;
  730                 sb.sctps_pdrpnedat += sarry->sctps_pdrpnedat;
  731                 sb.sctps_pdrppdbrk += sarry->sctps_pdrppdbrk;
  732                 sb.sctps_pdrptsnnf += sarry->sctps_pdrptsnnf;
  733                 sb.sctps_pdrpdnfnd += sarry->sctps_pdrpdnfnd;
  734                 sb.sctps_pdrpdiwnp += sarry->sctps_pdrpdiwnp;
  735                 sb.sctps_pdrpdizrw += sarry->sctps_pdrpdizrw;
  736                 sb.sctps_pdrpbadd += sarry->sctps_pdrpbadd;
  737                 sb.sctps_pdrpmark += sarry->sctps_pdrpmark;
  738                 sb.sctps_timoiterator += sarry->sctps_timoiterator;
  739                 sb.sctps_timodata += sarry->sctps_timodata;
  740                 sb.sctps_timowindowprobe += sarry->sctps_timowindowprobe;
  741                 sb.sctps_timoinit += sarry->sctps_timoinit;
  742                 sb.sctps_timosack += sarry->sctps_timosack;
  743                 sb.sctps_timoshutdown += sarry->sctps_timoshutdown;
  744                 sb.sctps_timoheartbeat += sarry->sctps_timoheartbeat;
  745                 sb.sctps_timocookie += sarry->sctps_timocookie;
  746                 sb.sctps_timosecret += sarry->sctps_timosecret;
  747                 sb.sctps_timopathmtu += sarry->sctps_timopathmtu;
  748                 sb.sctps_timoshutdownack += sarry->sctps_timoshutdownack;
  749                 sb.sctps_timoshutdownguard += sarry->sctps_timoshutdownguard;
  750                 sb.sctps_timostrmrst += sarry->sctps_timostrmrst;
  751                 sb.sctps_timoearlyfr += sarry->sctps_timoearlyfr;
  752                 sb.sctps_timoasconf += sarry->sctps_timoasconf;
  753                 sb.sctps_timodelprim += sarry->sctps_timodelprim;
  754                 sb.sctps_timoautoclose += sarry->sctps_timoautoclose;
  755                 sb.sctps_timoassockill += sarry->sctps_timoassockill;
  756                 sb.sctps_timoinpkill += sarry->sctps_timoinpkill;
  757                 sb.sctps_hdrops += sarry->sctps_hdrops;
  758                 sb.sctps_badsum += sarry->sctps_badsum;
  759                 sb.sctps_noport += sarry->sctps_noport;
  760                 sb.sctps_badvtag += sarry->sctps_badvtag;
  761                 sb.sctps_badsid += sarry->sctps_badsid;
  762                 sb.sctps_nomem += sarry->sctps_nomem;
  763                 sb.sctps_fastretransinrtt += sarry->sctps_fastretransinrtt;
  764                 sb.sctps_markedretrans += sarry->sctps_markedretrans;
  765                 sb.sctps_naglesent += sarry->sctps_naglesent;
  766                 sb.sctps_naglequeued += sarry->sctps_naglequeued;
  767                 sb.sctps_maxburstqueued += sarry->sctps_maxburstqueued;
  768                 sb.sctps_ifnomemqueued += sarry->sctps_ifnomemqueued;
  769                 sb.sctps_windowprobed += sarry->sctps_windowprobed;
  770                 sb.sctps_lowlevelerr += sarry->sctps_lowlevelerr;
  771                 sb.sctps_lowlevelerrusr += sarry->sctps_lowlevelerrusr;
  772                 sb.sctps_datadropchklmt += sarry->sctps_datadropchklmt;
  773                 sb.sctps_datadroprwnd += sarry->sctps_datadroprwnd;
  774                 sb.sctps_ecnereducedcwnd += sarry->sctps_ecnereducedcwnd;
  775                 sb.sctps_vtagexpress += sarry->sctps_vtagexpress;
  776                 sb.sctps_vtagbogus += sarry->sctps_vtagbogus;
  777                 sb.sctps_primary_randry += sarry->sctps_primary_randry;
  778                 sb.sctps_cmt_randry += sarry->sctps_cmt_randry;
  779                 sb.sctps_slowpath_sack += sarry->sctps_slowpath_sack;
  780                 sb.sctps_wu_sacks_sent += sarry->sctps_wu_sacks_sent;
  781                 sb.sctps_sends_with_flags += sarry->sctps_sends_with_flags;
  782                 sb.sctps_sends_with_unord += sarry->sctps_sends_with_unord;
  783                 sb.sctps_sends_with_eof += sarry->sctps_sends_with_eof;
  784                 sb.sctps_sends_with_abort += sarry->sctps_sends_with_abort;
  785                 sb.sctps_protocol_drain_calls += sarry->sctps_protocol_drain_calls;
  786                 sb.sctps_protocol_drains_done += sarry->sctps_protocol_drains_done;
  787                 sb.sctps_read_peeks += sarry->sctps_read_peeks;
  788                 sb.sctps_cached_chk += sarry->sctps_cached_chk;
  789                 sb.sctps_cached_strmoq += sarry->sctps_cached_strmoq;
  790                 sb.sctps_left_abandon += sarry->sctps_left_abandon;
  791                 sb.sctps_send_burst_avoid += sarry->sctps_send_burst_avoid;
  792                 sb.sctps_send_cwnd_avoid += sarry->sctps_send_cwnd_avoid;
  793                 sb.sctps_fwdtsn_map_over += sarry->sctps_fwdtsn_map_over;
  794                 if (req->newptr != NULL) {
  795                         memcpy(sarry, &sb_temp, sizeof(struct sctpstat));
  796                 }
  797         }
  798         error = SYSCTL_OUT(req, &sb, sizeof(struct sctpstat));
  799 #else
  800         error = SYSCTL_OUT(req, &SCTP_BASE_STATS, sizeof(struct sctpstat));
  801         if (error != 0) {
  802                 return (error);
  803         }
  804         if (req->newptr != NULL) {
  805                 memcpy(&SCTP_BASE_STATS, &sb_temp, sizeof(struct sctpstat));
  806         }
  807 #endif
  808         return (error);
  809 }
  810 
  811 #if defined(SCTP_LOCAL_TRACE_BUF)
  812 static int
  813 sctp_sysctl_handle_trace_log(SYSCTL_HANDLER_ARGS)
  814 {
  815         int error;
  816 
  817         error = SYSCTL_OUT(req, &SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log));
  818         return (error);
  819 }
  820 
  821 static int
  822 sctp_sysctl_handle_trace_log_clear(SYSCTL_HANDLER_ARGS)
  823 {
  824         int error = 0;
  825 
  826         memset(&SCTP_BASE_SYSCTL(sctp_log), 0, sizeof(struct sctp_log));
  827         return (error);
  828 }
  829 #endif
  830 
  831 #define SCTP_UINT_SYSCTL(mib_name, var_name, prefix)                    \
  832         static int                                                      \
  833         sctp_sysctl_handle_##mib_name(SYSCTL_HANDLER_ARGS)              \
  834         {                                                               \
  835                 int error;                                              \
  836                 uint32_t new;                                           \
  837                                                                         \
  838                 new = SCTP_BASE_SYSCTL(var_name);                       \
  839                 error = sysctl_handle_int(oidp, &new, 0, req);          \
  840                 if ((error == 0) && (req->newptr != NULL)) {            \
  841                         if ((new < prefix##_MIN) ||                     \
  842                             (new > prefix##_MAX)) {                     \
  843                                 error = EINVAL;                         \
  844                         } else {                                        \
  845                                 SCTP_BASE_SYSCTL(var_name) = new;       \
  846                         }                                               \
  847                 }                                                       \
  848                 return (error);                                         \
  849         }                                                               \
  850         SYSCTL_PROC(_net_inet_sctp, OID_AUTO, mib_name,                 \
  851                          CTLFLAG_VNET|CTLTYPE_UINT|CTLFLAG_RW, NULL, 0, \
  852                          sctp_sysctl_handle_##mib_name, "UI", prefix##_DESC);
  853 
  854 /*
  855  * sysctl definitions
  856  */
  857 
  858 SCTP_UINT_SYSCTL(sendspace, sctp_sendspace, SCTPCTL_MAXDGRAM)
  859 SCTP_UINT_SYSCTL(recvspace, sctp_recvspace, SCTPCTL_RECVSPACE)
  860 SCTP_UINT_SYSCTL(auto_asconf, sctp_auto_asconf, SCTPCTL_AUTOASCONF)
  861 SCTP_UINT_SYSCTL(ecn_enable, sctp_ecn_enable, SCTPCTL_ECN_ENABLE)
  862 SCTP_UINT_SYSCTL(pr_enable, sctp_pr_enable, SCTPCTL_PR_ENABLE)
  863 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, auth_enable, CTLFLAG_VNET | CTLTYPE_UINT | CTLFLAG_RW,
  864     NULL, 0, sctp_sysctl_handle_auth, "IU", SCTPCTL_AUTH_ENABLE_DESC);
  865 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, asconf_enable, CTLFLAG_VNET | CTLTYPE_UINT | CTLFLAG_RW,
  866     NULL, 0, sctp_sysctl_handle_asconf, "IU", SCTPCTL_ASCONF_ENABLE_DESC);
  867 SCTP_UINT_SYSCTL(reconfig_enable, sctp_reconfig_enable, SCTPCTL_RECONFIG_ENABLE)
  868 SCTP_UINT_SYSCTL(nrsack_enable, sctp_nrsack_enable, SCTPCTL_NRSACK_ENABLE)
  869 SCTP_UINT_SYSCTL(pktdrop_enable, sctp_pktdrop_enable, SCTPCTL_PKTDROP_ENABLE)
  870 SCTP_UINT_SYSCTL(peer_chkoh, sctp_peer_chunk_oh, SCTPCTL_PEER_CHKOH)
  871 SCTP_UINT_SYSCTL(maxburst, sctp_max_burst_default, SCTPCTL_MAXBURST)
  872 SCTP_UINT_SYSCTL(fr_maxburst, sctp_fr_max_burst_default, SCTPCTL_FRMAXBURST)
  873 SCTP_UINT_SYSCTL(maxchunks, sctp_max_chunks_on_queue, SCTPCTL_MAXCHUNKS)
  874 SCTP_UINT_SYSCTL(tcbhashsize, sctp_hashtblsize, SCTPCTL_TCBHASHSIZE)
  875 SCTP_UINT_SYSCTL(pcbhashsize, sctp_pcbtblsize, SCTPCTL_PCBHASHSIZE)
  876 SCTP_UINT_SYSCTL(min_split_point, sctp_min_split_point, SCTPCTL_MIN_SPLIT_POINT)
  877 SCTP_UINT_SYSCTL(chunkscale, sctp_chunkscale, SCTPCTL_CHUNKSCALE)
  878 SCTP_UINT_SYSCTL(delayed_sack_time, sctp_delayed_sack_time_default, SCTPCTL_DELAYED_SACK_TIME)
  879 SCTP_UINT_SYSCTL(sack_freq, sctp_sack_freq_default, SCTPCTL_SACK_FREQ)
  880 SCTP_UINT_SYSCTL(sys_resource, sctp_system_free_resc_limit, SCTPCTL_SYS_RESOURCE)
  881 SCTP_UINT_SYSCTL(asoc_resource, sctp_asoc_free_resc_limit, SCTPCTL_ASOC_RESOURCE)
  882 SCTP_UINT_SYSCTL(heartbeat_interval, sctp_heartbeat_interval_default, SCTPCTL_HEARTBEAT_INTERVAL)
  883 SCTP_UINT_SYSCTL(pmtu_raise_time, sctp_pmtu_raise_time_default, SCTPCTL_PMTU_RAISE_TIME)
  884 SCTP_UINT_SYSCTL(shutdown_guard_time, sctp_shutdown_guard_time_default, SCTPCTL_SHUTDOWN_GUARD_TIME)
  885 SCTP_UINT_SYSCTL(secret_lifetime, sctp_secret_lifetime_default, SCTPCTL_SECRET_LIFETIME)
  886 SCTP_UINT_SYSCTL(rto_max, sctp_rto_max_default, SCTPCTL_RTO_MAX)
  887 SCTP_UINT_SYSCTL(rto_min, sctp_rto_min_default, SCTPCTL_RTO_MIN)
  888 SCTP_UINT_SYSCTL(rto_initial, sctp_rto_initial_default, SCTPCTL_RTO_INITIAL)
  889 SCTP_UINT_SYSCTL(init_rto_max, sctp_init_rto_max_default, SCTPCTL_INIT_RTO_MAX)
  890 SCTP_UINT_SYSCTL(valid_cookie_life, sctp_valid_cookie_life_default, SCTPCTL_VALID_COOKIE_LIFE)
  891 SCTP_UINT_SYSCTL(init_rtx_max, sctp_init_rtx_max_default, SCTPCTL_INIT_RTX_MAX)
  892 SCTP_UINT_SYSCTL(assoc_rtx_max, sctp_assoc_rtx_max_default, SCTPCTL_ASSOC_RTX_MAX)
  893 SCTP_UINT_SYSCTL(path_rtx_max, sctp_path_rtx_max_default, SCTPCTL_PATH_RTX_MAX)
  894 SCTP_UINT_SYSCTL(path_pf_threshold, sctp_path_pf_threshold, SCTPCTL_PATH_PF_THRESHOLD)
  895 SCTP_UINT_SYSCTL(add_more_on_output, sctp_add_more_threshold, SCTPCTL_ADD_MORE_ON_OUTPUT)
  896 SCTP_UINT_SYSCTL(incoming_streams, sctp_nr_incoming_streams_default, SCTPCTL_INCOMING_STREAMS)
  897 SCTP_UINT_SYSCTL(outgoing_streams, sctp_nr_outgoing_streams_default, SCTPCTL_OUTGOING_STREAMS)
  898 SCTP_UINT_SYSCTL(cmt_on_off, sctp_cmt_on_off, SCTPCTL_CMT_ON_OFF)
  899 SCTP_UINT_SYSCTL(cmt_use_dac, sctp_cmt_use_dac, SCTPCTL_CMT_USE_DAC)
  900 SCTP_UINT_SYSCTL(cwnd_maxburst, sctp_use_cwnd_based_maxburst, SCTPCTL_CWND_MAXBURST)
  901 SCTP_UINT_SYSCTL(nat_friendly, sctp_nat_friendly, SCTPCTL_NAT_FRIENDLY)
  902 SCTP_UINT_SYSCTL(abc_l_var, sctp_L2_abc_variable, SCTPCTL_ABC_L_VAR)
  903 SCTP_UINT_SYSCTL(max_chained_mbufs, sctp_mbuf_threshold_count, SCTPCTL_MAX_CHAINED_MBUFS)
  904 SCTP_UINT_SYSCTL(do_sctp_drain, sctp_do_drain, SCTPCTL_DO_SCTP_DRAIN)
  905 SCTP_UINT_SYSCTL(hb_max_burst, sctp_hb_maxburst, SCTPCTL_HB_MAX_BURST)
  906 SCTP_UINT_SYSCTL(abort_at_limit, sctp_abort_if_one_2_one_hits_limit, SCTPCTL_ABORT_AT_LIMIT)
  907 SCTP_UINT_SYSCTL(min_residual, sctp_min_residual, SCTPCTL_MIN_RESIDUAL)
  908 SCTP_UINT_SYSCTL(max_retran_chunk, sctp_max_retran_chunk, SCTPCTL_MAX_RETRAN_CHUNK)
  909 SCTP_UINT_SYSCTL(log_level, sctp_logging_level, SCTPCTL_LOGGING_LEVEL)
  910 SCTP_UINT_SYSCTL(default_cc_module, sctp_default_cc_module, SCTPCTL_DEFAULT_CC_MODULE)
  911 SCTP_UINT_SYSCTL(default_ss_module, sctp_default_ss_module, SCTPCTL_DEFAULT_SS_MODULE)
  912 SCTP_UINT_SYSCTL(default_frag_interleave, sctp_default_frag_interleave, SCTPCTL_DEFAULT_FRAG_INTERLEAVE)
  913 SCTP_UINT_SYSCTL(mobility_base, sctp_mobility_base, SCTPCTL_MOBILITY_BASE)
  914 SCTP_UINT_SYSCTL(mobility_fasthandoff, sctp_mobility_fasthandoff, SCTPCTL_MOBILITY_FASTHANDOFF)
  915 #if defined(SCTP_LOCAL_TRACE_BUF)
  916 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, log, CTLFLAG_VNET | CTLTYPE_STRUCT | CTLFLAG_RD,
  917     NULL, 0, sctp_sysctl_handle_trace_log, "S,sctplog", "SCTP logging (struct sctp_log)");
  918 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, clear_trace, CTLFLAG_VNET | CTLTYPE_UINT | CTLFLAG_RW,
  919     NULL, 0, sctp_sysctl_handle_trace_log_clear, "IU", "Clear SCTP Logging buffer");
  920 #endif
  921 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, udp_tunneling_port, CTLFLAG_VNET | CTLTYPE_UINT | CTLFLAG_RW,
  922     NULL, 0, sctp_sysctl_handle_udp_tunneling, "IU", SCTPCTL_UDP_TUNNELING_PORT_DESC);
  923 SCTP_UINT_SYSCTL(enable_sack_immediately, sctp_enable_sack_immediately, SCTPCTL_SACK_IMMEDIATELY_ENABLE)
  924 SCTP_UINT_SYSCTL(nat_friendly_init, sctp_inits_include_nat_friendly, SCTPCTL_NAT_FRIENDLY_INITS)
  925 SCTP_UINT_SYSCTL(vtag_time_wait, sctp_vtag_time_wait, SCTPCTL_TIME_WAIT)
  926 SCTP_UINT_SYSCTL(buffer_splitting, sctp_buffer_splitting, SCTPCTL_BUFFER_SPLITTING)
  927 SCTP_UINT_SYSCTL(initial_cwnd, sctp_initial_cwnd, SCTPCTL_INITIAL_CWND)
  928 SCTP_UINT_SYSCTL(rttvar_bw, sctp_rttvar_bw, SCTPCTL_RTTVAR_BW)
  929 SCTP_UINT_SYSCTL(rttvar_rtt, sctp_rttvar_rtt, SCTPCTL_RTTVAR_RTT)
  930 SCTP_UINT_SYSCTL(rttvar_eqret, sctp_rttvar_eqret, SCTPCTL_RTTVAR_EQRET)
  931 SCTP_UINT_SYSCTL(rttvar_steady_step, sctp_steady_step, SCTPCTL_RTTVAR_STEADYS)
  932 SCTP_UINT_SYSCTL(use_dcccecn, sctp_use_dccc_ecn, SCTPCTL_RTTVAR_DCCCECN)
  933 SCTP_UINT_SYSCTL(blackhole, sctp_blackhole, SCTPCTL_BLACKHOLE)
  934 SCTP_UINT_SYSCTL(diag_info_code, sctp_diag_info_code, SCTPCTL_DIAG_INFO_CODE)
  935 #ifdef SCTP_DEBUG
  936 SCTP_UINT_SYSCTL(debug, sctp_debug_on, SCTPCTL_DEBUG)
  937 #endif
  938 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
  939 SCTP_UINT_SYSCTL(output_unlocked, sctp_output_unlocked, SCTPCTL_OUTPUT_UNLOCKED)
  940 #endif
  941 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, stats, CTLFLAG_VNET | CTLTYPE_STRUCT | CTLFLAG_RW,
  942     NULL, 0, sctp_sysctl_handle_stats, "S,sctpstat", "SCTP statistics (struct sctp_stat)");
  943 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, assoclist, CTLFLAG_VNET | CTLTYPE_OPAQUE | CTLFLAG_RD,
  944     NULL, 0, sctp_sysctl_handle_assoclist, "S,xassoc", "List of active SCTP associations");

Cache object: 680d214affb003ba437981b854128496


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