sys/netinet/sctp_sysctl.c

   1 /*-
   2  * Copyright (c) 2007, by Cisco Systems, Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are met:
   6  *
   7  * a) Redistributions of source code must retain the above copyright notice,
   8  *   this list of conditions and the following disclaimer.
   9  *
  10  * b) Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in
  12  *   the documentation and/or other materials provided with the distribution.
  13  *
  14  * c) Neither the name of Cisco Systems, Inc. nor the names of its
  15  *    contributors may be used to endorse or promote products derived
  16  *    from this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  20  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  22  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  28  * THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #include <sys/cdefs.h>
  32 __FBSDID("$FreeBSD$");
  33
  34 #include <netinet/sctp_os.h>
  35 #include <netinet/sctp.h>
  36 #include <netinet/sctp_constants.h>
  37 #include <netinet/sctp_sysctl.h>
  38 #include <netinet/sctp_pcb.h>
  39 #include <netinet/sctputil.h>
  40 #include <netinet/sctp_output.h>
  41
  42 /*
  43  * sysctl tunable variables
  44  */
  45
  46 void
  47 sctp_init_sysctls()
  48 {
  49         SCTP_BASE_SYSCTL(sctp_sendspace) = SCTPCTL_MAXDGRAM_DEFAULT;
  50         SCTP_BASE_SYSCTL(sctp_recvspace) = SCTPCTL_RECVSPACE_DEFAULT;
  51         SCTP_BASE_SYSCTL(sctp_auto_asconf) = SCTPCTL_AUTOASCONF_DEFAULT;
  52         SCTP_BASE_SYSCTL(sctp_multiple_asconfs) = SCTPCTL_MULTIPLEASCONFS_DEFAULT;
  53         SCTP_BASE_SYSCTL(sctp_ecn_enable) = SCTPCTL_ECN_ENABLE_DEFAULT;
  54         SCTP_BASE_SYSCTL(sctp_ecn_nonce) = SCTPCTL_ECN_NONCE_DEFAULT;
  55         SCTP_BASE_SYSCTL(sctp_strict_sacks) = SCTPCTL_STRICT_SACKS_DEFAULT;
  56         SCTP_BASE_SYSCTL(sctp_no_csum_on_loopback) = SCTPCTL_LOOPBACK_NOCSUM_DEFAULT;
  57         SCTP_BASE_SYSCTL(sctp_strict_init) = SCTPCTL_STRICT_INIT_DEFAULT;
  58         SCTP_BASE_SYSCTL(sctp_peer_chunk_oh) = SCTPCTL_PEER_CHKOH_DEFAULT;
  59         SCTP_BASE_SYSCTL(sctp_max_burst_default) = SCTPCTL_MAXBURST_DEFAULT;
  60         SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue) = SCTPCTL_MAXCHUNKS_DEFAULT;
  61         SCTP_BASE_SYSCTL(sctp_hashtblsize) = SCTPCTL_TCBHASHSIZE_DEFAULT;
  62         SCTP_BASE_SYSCTL(sctp_pcbtblsize) = SCTPCTL_PCBHASHSIZE_DEFAULT;
  63         SCTP_BASE_SYSCTL(sctp_min_split_point) = SCTPCTL_MIN_SPLIT_POINT_DEFAULT;
  64         SCTP_BASE_SYSCTL(sctp_chunkscale) = SCTPCTL_CHUNKSCALE_DEFAULT;
  65         SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default) = SCTPCTL_DELAYED_SACK_TIME_DEFAULT;
  66         SCTP_BASE_SYSCTL(sctp_sack_freq_default) = SCTPCTL_SACK_FREQ_DEFAULT;
  67         SCTP_BASE_SYSCTL(sctp_system_free_resc_limit) = SCTPCTL_SYS_RESOURCE_DEFAULT;
  68         SCTP_BASE_SYSCTL(sctp_asoc_free_resc_limit) = SCTPCTL_ASOC_RESOURCE_DEFAULT;
  69         SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default) = SCTPCTL_HEARTBEAT_INTERVAL_DEFAULT;
  70         SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default) = SCTPCTL_PMTU_RAISE_TIME_DEFAULT;
  71         SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default) = SCTPCTL_SHUTDOWN_GUARD_TIME_DEFAULT;
  72         SCTP_BASE_SYSCTL(sctp_secret_lifetime_default) = SCTPCTL_SECRET_LIFETIME_DEFAULT;
  73         SCTP_BASE_SYSCTL(sctp_rto_max_default) = SCTPCTL_RTO_MAX_DEFAULT;
  74         SCTP_BASE_SYSCTL(sctp_rto_min_default) = SCTPCTL_RTO_MIN_DEFAULT;
  75         SCTP_BASE_SYSCTL(sctp_rto_initial_default) = SCTPCTL_RTO_INITIAL_DEFAULT;
  76         SCTP_BASE_SYSCTL(sctp_init_rto_max_default) = SCTPCTL_INIT_RTO_MAX_DEFAULT;
  77         SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default) = SCTPCTL_VALID_COOKIE_LIFE_DEFAULT;
  78         SCTP_BASE_SYSCTL(sctp_init_rtx_max_default) = SCTPCTL_INIT_RTX_MAX_DEFAULT;
  79         SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default) = SCTPCTL_ASSOC_RTX_MAX_DEFAULT;
  80         SCTP_BASE_SYSCTL(sctp_path_rtx_max_default) = SCTPCTL_PATH_RTX_MAX_DEFAULT;
  81         SCTP_BASE_SYSCTL(sctp_add_more_threshold) = SCTPCTL_ADD_MORE_ON_OUTPUT_DEFAULT;
  82         SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default) = SCTPCTL_OUTGOING_STREAMS_DEFAULT;
  83         SCTP_BASE_SYSCTL(sctp_cmt_on_off) = SCTPCTL_CMT_ON_OFF_DEFAULT;
  84         /* EY */
  85         SCTP_BASE_SYSCTL(sctp_nr_sack_on_off) = SCTPCTL_NR_SACK_ON_OFF_DEFAULT;
  86         SCTP_BASE_SYSCTL(sctp_cmt_use_dac) = SCTPCTL_CMT_USE_DAC_DEFAULT;
  87         SCTP_BASE_SYSCTL(sctp_cmt_pf) = SCTPCTL_CMT_PF_DEFAULT;
  88         SCTP_BASE_SYSCTL(sctp_use_cwnd_based_maxburst) = SCTPCTL_CWND_MAXBURST_DEFAULT;
  89         SCTP_BASE_SYSCTL(sctp_early_fr) = SCTPCTL_EARLY_FAST_RETRAN_DEFAULT;
  90         SCTP_BASE_SYSCTL(sctp_early_fr_msec) = SCTPCTL_EARLY_FAST_RETRAN_MSEC_DEFAULT;
  91         SCTP_BASE_SYSCTL(sctp_asconf_auth_nochk) = SCTPCTL_ASCONF_AUTH_NOCHK_DEFAULT;
  92         SCTP_BASE_SYSCTL(sctp_auth_disable) = SCTPCTL_AUTH_DISABLE_DEFAULT;
  93         SCTP_BASE_SYSCTL(sctp_nat_friendly) = SCTPCTL_NAT_FRIENDLY_DEFAULT;
  94         SCTP_BASE_SYSCTL(sctp_L2_abc_variable) = SCTPCTL_ABC_L_VAR_DEFAULT;
  95         SCTP_BASE_SYSCTL(sctp_mbuf_threshold_count) = SCTPCTL_MAX_CHAINED_MBUFS_DEFAULT;
  96         SCTP_BASE_SYSCTL(sctp_do_drain) = SCTPCTL_DO_SCTP_DRAIN_DEFAULT;
  97         SCTP_BASE_SYSCTL(sctp_hb_maxburst) = SCTPCTL_HB_MAX_BURST_DEFAULT;
  98         SCTP_BASE_SYSCTL(sctp_abort_if_one_2_one_hits_limit) = SCTPCTL_ABORT_AT_LIMIT_DEFAULT;
  99         SCTP_BASE_SYSCTL(sctp_strict_data_order) = SCTPCTL_STRICT_DATA_ORDER_DEFAULT;
 100         SCTP_BASE_SYSCTL(sctp_min_residual) = SCTPCTL_MIN_RESIDUAL_DEFAULT;
 101         SCTP_BASE_SYSCTL(sctp_max_retran_chunk) = SCTPCTL_MAX_RETRAN_CHUNK_DEFAULT;
 102         SCTP_BASE_SYSCTL(sctp_logging_level) = SCTPCTL_LOGGING_LEVEL_DEFAULT;
 103         /* JRS - Variable for default congestion control module */
 104         SCTP_BASE_SYSCTL(sctp_default_cc_module) = SCTPCTL_DEFAULT_CC_MODULE_DEFAULT;
 105         SCTP_BASE_SYSCTL(sctp_default_frag_interleave) = SCTPCTL_DEFAULT_FRAG_INTERLEAVE_DEFAULT;
 106         SCTP_BASE_SYSCTL(sctp_mobility_base) = SCTPCTL_MOBILITY_BASE_DEFAULT;
 107         SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) = SCTPCTL_MOBILITY_FASTHANDOFF_DEFAULT;
 108         SCTP_BASE_SYSCTL(sctp_vtag_time_wait) = SCTPCTL_TIME_WAIT_DEFAULT;
 109 #if defined(SCTP_LOCAL_TRACE_BUF)
 110         memset(&SCTP_BASE_SYSCTL(sctp_log), 0, sizeof(struct sctp_log));
 111 #endif
 112         SCTP_BASE_SYSCTL(sctp_udp_tunneling_for_client_enable) = SCTPCTL_UDP_TUNNELING_FOR_CLIENT_ENABLE_DEFAULT;
 113         SCTP_BASE_SYSCTL(sctp_udp_tunneling_port) = SCTPCTL_UDP_TUNNELING_PORT_DEFAULT;
 114         SCTP_BASE_SYSCTL(sctp_enable_sack_immediately) = SCTPCTL_SACK_IMMEDIATELY_ENABLE_DEFAULT;
 115         SCTP_BASE_SYSCTL(sctp_inits_include_nat_friendly) = SCTPCTL_NAT_FRIENDLY_INITS_DEFAULT;
 116 #if defined(SCTP_DEBUG)
 117         SCTP_BASE_SYSCTL(sctp_debug_on) = SCTPCTL_DEBUG_DEFAULT;
 118 #endif
 119 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
 120         SCTP_BASE_SYSCTL(sctp_output_unlocked) = SCTPCTL_OUTPUT_UNLOCKED_DEFAULT;
 121 #endif
 122 }
 123
 124
 125 /* It returns an upper limit. No filtering is done here */
 126 static unsigned int
 127 number_of_addresses(struct sctp_inpcb *inp)
 128 {
 129         int cnt;
 130         struct sctp_vrf *vrf;
 131         struct sctp_ifn *sctp_ifn;
 132         struct sctp_ifa *sctp_ifa;
 133         struct sctp_laddr *laddr;
 134
 135         cnt = 0;
 136         /* neither Mac OS X nor FreeBSD support mulitple routing functions */
 137         if ((vrf = sctp_find_vrf(inp->def_vrf_id)) == NULL) {
 138                 return (0);
 139         }
 140         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
 141                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
 142                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
 143                                 if ((sctp_ifa->address.sa.sa_family == AF_INET) ||
 144                                     (sctp_ifa->address.sa.sa_family == AF_INET6)) {
 145                                         cnt++;
 146                                 }
 147                         }
 148                 }
 149         } else {
 150                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
 151                         if ((laddr->ifa->address.sa.sa_family == AF_INET) ||
 152                             (laddr->ifa->address.sa.sa_family == AF_INET6)) {
 153                                 cnt++;
 154                         }
 155                 }
 156         }
 157         return (cnt);
 158 }
 159
 160 static int
 161 copy_out_local_addresses(struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sysctl_req *req)
 162 {
 163         struct sctp_ifn *sctp_ifn;
 164         struct sctp_ifa *sctp_ifa;
 165         int loopback_scope, ipv4_local_scope, local_scope, site_scope;
 166         int ipv4_addr_legal, ipv6_addr_legal;
 167         struct sctp_vrf *vrf;
 168         struct xsctp_laddr xladdr;
 169         struct sctp_laddr *laddr;
 170         int error;
 171
 172         /* Turn on all the appropriate scope */
 173         if (stcb) {
 174                 /* use association specific values */
 175                 loopback_scope = stcb->asoc.loopback_scope;
 176                 ipv4_local_scope = stcb->asoc.ipv4_local_scope;
 177                 local_scope = stcb->asoc.local_scope;
 178                 site_scope = stcb->asoc.site_scope;
 179         } else {
 180                 /* use generic values for endpoints */
 181                 loopback_scope = 1;
 182                 ipv4_local_scope = 1;
 183                 local_scope = 1;
 184                 site_scope = 1;
 185         }
 186
 187         /* use only address families of interest */
 188         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
 189                 ipv6_addr_legal = 1;
 190                 if (SCTP_IPV6_V6ONLY(inp)) {
 191                         ipv4_addr_legal = 0;
 192                 } else {
 193                         ipv4_addr_legal = 1;
 194                 }
 195         } else {
 196                 ipv4_addr_legal = 1;
 197                 ipv6_addr_legal = 0;
 198         }
 199
 200         error = 0;
 201
 202         /* neither Mac OS X nor FreeBSD support mulitple routing functions */
 203         if ((vrf = sctp_find_vrf(inp->def_vrf_id)) == NULL) {
 204                 SCTP_INP_RUNLOCK(inp);
 205                 SCTP_INP_INFO_RUNLOCK();
 206                 return (-1);
 207         }
 208         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
 209                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
 210                         if ((loopback_scope == 0) && SCTP_IFN_IS_IFT_LOOP(sctp_ifn))
 211                                 /* Skip loopback if loopback_scope not set */
 212                                 continue;
 213                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
 214                                 if (stcb) {
 215                                         /*
 216                                          * ignore if blacklisted at
 217                                          * association level
 218                                          */
 219                                         if (sctp_is_addr_restricted(stcb, sctp_ifa))
 220                                                 continue;
 221                                 }
 222                                 switch (sctp_ifa->address.sa.sa_family) {
 223                                 case AF_INET:
 224                                         if (ipv4_addr_legal) {
 225                                                 struct sockaddr_in *sin;
 226
 227                                                 sin = (struct sockaddr_in *)&sctp_ifa->address.sa;
 228                                                 if (sin->sin_addr.s_addr == 0)
 229                                                         continue;
 230                                                 if ((ipv4_local_scope == 0) && (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)))
 231                                                         continue;
 232                                         } else {
 233                                                 continue;
 234                                         }
 235                                         break;
 236 #ifdef INET6
 237                                 case AF_INET6:
 238                                         if (ipv6_addr_legal) {
 239                                                 struct sockaddr_in6 *sin6;
 240
 241                                                 sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa;
 242                                                 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
 243                                                         continue;
 244                                                 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
 245                                                         if (local_scope == 0)
 246                                                                 continue;
 247                                                         if (sin6->sin6_scope_id == 0) {
 248                                                                 /*
 249                                                                  * bad link
 250                                                                  * local
 251                                                                  * address
 252                                                                  */
 253                                                                 if (sa6_recoverscope(sin6) != 0)
 254                                                                         continue;
 255                                                         }
 256                                                 }
 257                                                 if ((site_scope == 0) && (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)))
 258                                                         continue;
 259                                         } else {
 260                                                 continue;
 261                                         }
 262                                         break;
 263 #endif
 264                                 default:
 265                                         continue;
 266                                 }
 267                                 memset((void *)&xladdr, 0, sizeof(struct xsctp_laddr));
 268                                 memcpy((void *)&xladdr.address, (const void *)&sctp_ifa->address, sizeof(union sctp_sockstore));
 269                                 SCTP_INP_RUNLOCK(inp);
 270                                 SCTP_INP_INFO_RUNLOCK();
 271                                 error = SYSCTL_OUT(req, &xladdr, sizeof(struct xsctp_laddr));
 272                                 if (error) {
 273                                         return (error);
 274                                 } else {
 275                                         SCTP_INP_INFO_RLOCK();
 276                                         SCTP_INP_RLOCK(inp);
 277                                 }
 278                         }
 279                 }
 280         } else {
 281                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
 282                         /* ignore if blacklisted at association level */
 283                         if (stcb && sctp_is_addr_restricted(stcb, laddr->ifa))
 284                                 continue;
 285                         memset((void *)&xladdr, 0, sizeof(struct xsctp_laddr));
 286                         memcpy((void *)&xladdr.address, (const void *)&laddr->ifa->address, sizeof(union sctp_sockstore));
 287                         xladdr.start_time.tv_sec = (uint32_t) laddr->start_time.tv_sec;
 288                         xladdr.start_time.tv_usec = (uint32_t) laddr->start_time.tv_usec;
 289                         SCTP_INP_RUNLOCK(inp);
 290                         SCTP_INP_INFO_RUNLOCK();
 291                         error = SYSCTL_OUT(req, &xladdr, sizeof(struct xsctp_laddr));
 292                         if (error) {
 293                                 return (error);
 294                         } else {
 295                                 SCTP_INP_INFO_RLOCK();
 296                                 SCTP_INP_RLOCK(inp);
 297                         }
 298                 }
 299         }
 300         memset((void *)&xladdr, 0, sizeof(struct xsctp_laddr));
 301         xladdr.last = 1;
 302         SCTP_INP_RUNLOCK(inp);
 303         SCTP_INP_INFO_RUNLOCK();
 304         error = SYSCTL_OUT(req, &xladdr, sizeof(struct xsctp_laddr));
 305
 306         if (error) {
 307                 return (error);
 308         } else {
 309                 SCTP_INP_INFO_RLOCK();
 310                 SCTP_INP_RLOCK(inp);
 311                 return (0);
 312         }
 313 }
 314
 315 /*
 316  * sysctl functions
 317  */
 318 static int
 319 sctp_assoclist(SYSCTL_HANDLER_ARGS)
 320 {
 321         unsigned int number_of_endpoints;
 322         unsigned int number_of_local_addresses;
 323         unsigned int number_of_associations;
 324         unsigned int number_of_remote_addresses;
 325         unsigned int n;
 326         int error;
 327         struct sctp_inpcb *inp;
 328         struct sctp_tcb *stcb;
 329         struct sctp_nets *net;
 330         struct xsctp_inpcb xinpcb;
 331         struct xsctp_tcb xstcb;
 332         struct xsctp_raddr xraddr;
 333
 334         number_of_endpoints = 0;
 335         number_of_local_addresses = 0;
 336         number_of_associations = 0;
 337         number_of_remote_addresses = 0;
 338
 339         SCTP_INP_INFO_RLOCK();
 340         if (req->oldptr == USER_ADDR_NULL) {
 341                 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
 342                         SCTP_INP_RLOCK(inp);
 343                         number_of_endpoints++;
 344                         number_of_local_addresses += number_of_addresses(inp);
 345                         LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
 346                                 number_of_associations++;
 347                                 number_of_local_addresses += number_of_addresses(inp);
 348                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 349                                         number_of_remote_addresses++;
 350                                 }
 351                         }
 352                         SCTP_INP_RUNLOCK(inp);
 353                 }
 354                 SCTP_INP_INFO_RUNLOCK();
 355                 n = (number_of_endpoints + 1) * sizeof(struct xsctp_inpcb) +
 356                     (number_of_local_addresses + number_of_endpoints + number_of_associations) * sizeof(struct xsctp_laddr) +
 357                     (number_of_associations + number_of_endpoints) * sizeof(struct xsctp_tcb) +
 358                     (number_of_remote_addresses + number_of_associations) * sizeof(struct xsctp_raddr);
 359
 360                 /* request some more memory than needed */
 361                 req->oldidx = (n + n / 8);
 362                 return 0;
 363         }
 364         if (req->newptr != USER_ADDR_NULL) {
 365                 SCTP_INP_INFO_RUNLOCK();
 366                 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_SYSCTL, EPERM);
 367                 return EPERM;
 368         }
 369         LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
 370                 SCTP_INP_RLOCK(inp);
 371                 xinpcb.last = 0;
 372                 xinpcb.local_port = ntohs(inp->sctp_lport);
 373                 xinpcb.flags = inp->sctp_flags;
 374                 xinpcb.features = inp->sctp_features;
 375                 xinpcb.total_sends = inp->total_sends;
 376                 xinpcb.total_recvs = inp->total_recvs;
 377                 xinpcb.total_nospaces = inp->total_nospaces;
 378                 xinpcb.fragmentation_point = inp->sctp_frag_point;
 379                 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
 380                     (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
 381                         xinpcb.qlen = 0;
 382                         xinpcb.maxqlen = 0;
 383                 } else {
 384                         xinpcb.qlen = inp->sctp_socket->so_qlen;
 385                         xinpcb.maxqlen = inp->sctp_socket->so_qlimit;
 386                 }
 387                 SCTP_INP_INCR_REF(inp);
 388                 SCTP_INP_RUNLOCK(inp);
 389                 SCTP_INP_INFO_RUNLOCK();
 390                 error = SYSCTL_OUT(req, &xinpcb, sizeof(struct xsctp_inpcb));
 391                 if (error) {
 392                         SCTP_INP_DECR_REF(inp);
 393                         return error;
 394                 }
 395                 SCTP_INP_INFO_RLOCK();
 396                 SCTP_INP_RLOCK(inp);
 397                 error = copy_out_local_addresses(inp, NULL, req);
 398                 if (error) {
 399                         SCTP_INP_DECR_REF(inp);
 400                         return error;
 401                 }
 402                 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
 403                         SCTP_TCB_LOCK(stcb);
 404                         atomic_add_int(&stcb->asoc.refcnt, 1);
 405                         SCTP_TCB_UNLOCK(stcb);
 406                         xstcb.last = 0;
 407                         xstcb.local_port = ntohs(inp->sctp_lport);
 408                         xstcb.remote_port = ntohs(stcb->rport);
 409                         if (stcb->asoc.primary_destination != NULL)
 410                                 xstcb.primary_addr = stcb->asoc.primary_destination->ro._l_addr;
 411                         xstcb.heartbeat_interval = stcb->asoc.heart_beat_delay;
 412                         xstcb.state = SCTP_GET_STATE(&stcb->asoc);      /* FIXME */
 413                         /* 7.0 does not support these */
 414                         xstcb.assoc_id = sctp_get_associd(stcb);
 415                         xstcb.peers_rwnd = stcb->asoc.peers_rwnd;
 416                         xstcb.in_streams = stcb->asoc.streamincnt;
 417                         xstcb.out_streams = stcb->asoc.streamoutcnt;
 418                         xstcb.max_nr_retrans = stcb->asoc.overall_error_count;
 419                         xstcb.primary_process = 0;      /* not really supported
 420                                                          * yet */
 421                         xstcb.T1_expireries = stcb->asoc.timoinit + stcb->asoc.timocookie;
 422                         xstcb.T2_expireries = stcb->asoc.timoshutdown + stcb->asoc.timoshutdownack;
 423                         xstcb.retransmitted_tsns = stcb->asoc.marked_retrans;
 424                         xstcb.start_time.tv_sec = (uint32_t) stcb->asoc.start_time.tv_sec;
 425                         xstcb.start_time.tv_usec = (uint32_t) stcb->asoc.start_time.tv_usec;
 426                         xstcb.discontinuity_time.tv_sec = (uint32_t) stcb->asoc.discontinuity_time.tv_sec;
 427                         xstcb.discontinuity_time.tv_usec = (uint32_t) stcb->asoc.discontinuity_time.tv_usec;
 428                         xstcb.total_sends = stcb->total_sends;
 429                         xstcb.total_recvs = stcb->total_recvs;
 430                         xstcb.local_tag = stcb->asoc.my_vtag;
 431                         xstcb.remote_tag = stcb->asoc.peer_vtag;
 432                         xstcb.initial_tsn = stcb->asoc.init_seq_number;
 433                         xstcb.highest_tsn = stcb->asoc.sending_seq - 1;
 434                         xstcb.cumulative_tsn = stcb->asoc.last_acked_seq;
 435                         xstcb.cumulative_tsn_ack = stcb->asoc.cumulative_tsn;
 436                         xstcb.mtu = stcb->asoc.smallest_mtu;
 437                         xstcb.refcnt = stcb->asoc.refcnt;
 438                         SCTP_INP_RUNLOCK(inp);
 439                         SCTP_INP_INFO_RUNLOCK();
 440                         error = SYSCTL_OUT(req, &xstcb, sizeof(struct xsctp_tcb));
 441                         if (error) {
 442                                 SCTP_INP_DECR_REF(inp);
 443                                 atomic_subtract_int(&stcb->asoc.refcnt, 1);
 444                                 return error;
 445                         }
 446                         SCTP_INP_INFO_RLOCK();
 447                         SCTP_INP_RLOCK(inp);
 448                         error = copy_out_local_addresses(inp, stcb, req);
 449                         if (error) {
 450                                 SCTP_INP_DECR_REF(inp);
 451                                 atomic_subtract_int(&stcb->asoc.refcnt, 1);
 452                                 return error;
 453                         }
 454                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 455                                 xraddr.last = 0;
 456                                 xraddr.address = net->ro._l_addr;
 457                                 xraddr.active = ((net->dest_state & SCTP_ADDR_REACHABLE) == SCTP_ADDR_REACHABLE);
 458                                 xraddr.confirmed = ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0);
 459                                 xraddr.heartbeat_enabled = ((net->dest_state & SCTP_ADDR_NOHB) == 0);
 460                                 xraddr.rto = net->RTO;
 461                                 xraddr.max_path_rtx = net->failure_threshold;
 462                                 xraddr.rtx = net->marked_retrans;
 463                                 xraddr.error_counter = net->error_count;
 464                                 xraddr.cwnd = net->cwnd;
 465                                 xraddr.flight_size = net->flight_size;
 466                                 xraddr.mtu = net->mtu;
 467                                 xraddr.rtt = net->rtt;
 468                                 xraddr.start_time.tv_sec = (uint32_t) net->start_time.tv_sec;
 469                                 xraddr.start_time.tv_usec = (uint32_t) net->start_time.tv_usec;
 470                                 SCTP_INP_RUNLOCK(inp);
 471                                 SCTP_INP_INFO_RUNLOCK();
 472                                 error = SYSCTL_OUT(req, &xraddr, sizeof(struct xsctp_raddr));
 473                                 if (error) {
 474                                         SCTP_INP_DECR_REF(inp);
 475                                         atomic_subtract_int(&stcb->asoc.refcnt, 1);
 476                                         return error;
 477                                 }
 478                                 SCTP_INP_INFO_RLOCK();
 479                                 SCTP_INP_RLOCK(inp);
 480                         }
 481                         atomic_subtract_int(&stcb->asoc.refcnt, 1);
 482                         memset((void *)&xraddr, 0, sizeof(struct xsctp_raddr));
 483                         xraddr.last = 1;
 484                         SCTP_INP_RUNLOCK(inp);
 485                         SCTP_INP_INFO_RUNLOCK();
 486                         error = SYSCTL_OUT(req, &xraddr, sizeof(struct xsctp_raddr));
 487                         if (error) {
 488                                 SCTP_INP_DECR_REF(inp);
 489                                 return error;
 490                         }
 491                         SCTP_INP_INFO_RLOCK();
 492                         SCTP_INP_RLOCK(inp);
 493                 }
 494                 SCTP_INP_DECR_REF(inp);
 495                 SCTP_INP_RUNLOCK(inp);
 496                 SCTP_INP_INFO_RUNLOCK();
 497                 memset((void *)&xstcb, 0, sizeof(struct xsctp_tcb));
 498                 xstcb.last = 1;
 499                 error = SYSCTL_OUT(req, &xstcb, sizeof(struct xsctp_tcb));
 500                 if (error) {
 501                         return error;
 502                 }
 503                 SCTP_INP_INFO_RLOCK();
 504         }
 505         SCTP_INP_INFO_RUNLOCK();
 506
 507         memset((void *)&xinpcb, 0, sizeof(struct xsctp_inpcb));
 508         xinpcb.last = 1;
 509         error = SYSCTL_OUT(req, &xinpcb, sizeof(struct xsctp_inpcb));
 510         return error;
 511 }
 512
 513
 514 #define RANGECHK(var, min, max) \
 515         if ((var) < (min)) { (var) = (min); } \
 516         else if ((var) > (max)) { (var) = (max); }
 517
 518 static int
 519 sysctl_sctp_udp_tunneling_check(SYSCTL_HANDLER_ARGS)
 520 {
 521         int error;
 522         uint32_t old_sctp_udp_tunneling_port;
 523
 524         SCTP_INP_INFO_RLOCK();
 525         old_sctp_udp_tunneling_port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
 526         SCTP_INP_INFO_RUNLOCK();
 527         error = sysctl_handle_int(oidp, oidp->oid_arg1, oidp->oid_arg2, req);
 528         if (error == 0) {
 529                 RANGECHK(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port), SCTPCTL_UDP_TUNNELING_PORT_MIN, SCTPCTL_UDP_TUNNELING_PORT_MAX);
 530                 if (old_sctp_udp_tunneling_port == SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)) {
 531                         error = 0;
 532                         goto out;
 533                 }
 534                 SCTP_INP_INFO_WLOCK();
 535                 if (old_sctp_udp_tunneling_port) {
 536                         sctp_over_udp_stop();
 537                 }
 538                 if (SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)) {
 539                         if (sctp_over_udp_start()) {
 540                                 SCTP_BASE_SYSCTL(sctp_udp_tunneling_port) = 0;
 541                         }
 542                 }
 543                 SCTP_INP_INFO_WUNLOCK();
 544         }
 545 out:
 546         return (error);
 547 }
 548
 549
 550 static int
 551 sysctl_sctp_check(SYSCTL_HANDLER_ARGS)
 552 {
 553         int error;
 554
 555         error = sysctl_handle_int(oidp, oidp->oid_arg1, oidp->oid_arg2, req);
 556         if (error == 0) {
 557                 RANGECHK(SCTP_BASE_SYSCTL(sctp_sendspace), SCTPCTL_MAXDGRAM_MIN, SCTPCTL_MAXDGRAM_MAX);
 558                 RANGECHK(SCTP_BASE_SYSCTL(sctp_recvspace), SCTPCTL_RECVSPACE_MIN, SCTPCTL_RECVSPACE_MAX);
 559 #if defined(__FreeBSD__) || defined(SCTP_APPLE_AUTO_ASCONF)
 560                 RANGECHK(SCTP_BASE_SYSCTL(sctp_auto_asconf), SCTPCTL_AUTOASCONF_MIN, SCTPCTL_AUTOASCONF_MAX);
 561 #endif
 562                 RANGECHK(SCTP_BASE_SYSCTL(sctp_ecn_enable), SCTPCTL_ECN_ENABLE_MIN, SCTPCTL_ECN_ENABLE_MAX);
 563                 RANGECHK(SCTP_BASE_SYSCTL(sctp_ecn_nonce), SCTPCTL_ECN_NONCE_MIN, SCTPCTL_ECN_NONCE_MAX);
 564                 RANGECHK(SCTP_BASE_SYSCTL(sctp_strict_sacks), SCTPCTL_STRICT_SACKS_MIN, SCTPCTL_STRICT_SACKS_MAX);
 565                 RANGECHK(SCTP_BASE_SYSCTL(sctp_no_csum_on_loopback), SCTPCTL_LOOPBACK_NOCSUM_MIN, SCTPCTL_LOOPBACK_NOCSUM_MAX);
 566                 RANGECHK(SCTP_BASE_SYSCTL(sctp_strict_init), SCTPCTL_STRICT_INIT_MIN, SCTPCTL_STRICT_INIT_MAX);
 567                 RANGECHK(SCTP_BASE_SYSCTL(sctp_peer_chunk_oh), SCTPCTL_PEER_CHKOH_MIN, SCTPCTL_PEER_CHKOH_MAX);
 568                 RANGECHK(SCTP_BASE_SYSCTL(sctp_max_burst_default), SCTPCTL_MAXBURST_MIN, SCTPCTL_MAXBURST_MAX);
 569                 RANGECHK(SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue), SCTPCTL_MAXCHUNKS_MIN, SCTPCTL_MAXCHUNKS_MAX);
 570                 RANGECHK(SCTP_BASE_SYSCTL(sctp_hashtblsize), SCTPCTL_TCBHASHSIZE_MIN, SCTPCTL_TCBHASHSIZE_MAX);
 571                 RANGECHK(SCTP_BASE_SYSCTL(sctp_pcbtblsize), SCTPCTL_PCBHASHSIZE_MIN, SCTPCTL_PCBHASHSIZE_MAX);
 572                 RANGECHK(SCTP_BASE_SYSCTL(sctp_min_split_point), SCTPCTL_MIN_SPLIT_POINT_MIN, SCTPCTL_MIN_SPLIT_POINT_MAX);
 573                 RANGECHK(SCTP_BASE_SYSCTL(sctp_chunkscale), SCTPCTL_CHUNKSCALE_MIN, SCTPCTL_CHUNKSCALE_MAX);
 574                 RANGECHK(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default), SCTPCTL_DELAYED_SACK_TIME_MIN, SCTPCTL_DELAYED_SACK_TIME_MAX);
 575                 RANGECHK(SCTP_BASE_SYSCTL(sctp_sack_freq_default), SCTPCTL_SACK_FREQ_MIN, SCTPCTL_SACK_FREQ_MAX);
 576                 RANGECHK(SCTP_BASE_SYSCTL(sctp_system_free_resc_limit), SCTPCTL_SYS_RESOURCE_MIN, SCTPCTL_SYS_RESOURCE_MAX);
 577                 RANGECHK(SCTP_BASE_SYSCTL(sctp_asoc_free_resc_limit), SCTPCTL_ASOC_RESOURCE_MIN, SCTPCTL_ASOC_RESOURCE_MAX);
 578                 RANGECHK(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default), SCTPCTL_HEARTBEAT_INTERVAL_MIN, SCTPCTL_HEARTBEAT_INTERVAL_MAX);
 579                 RANGECHK(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default), SCTPCTL_PMTU_RAISE_TIME_MIN, SCTPCTL_PMTU_RAISE_TIME_MAX);
 580                 RANGECHK(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default), SCTPCTL_SHUTDOWN_GUARD_TIME_MIN, SCTPCTL_SHUTDOWN_GUARD_TIME_MAX);
 581                 RANGECHK(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default), SCTPCTL_SECRET_LIFETIME_MIN, SCTPCTL_SECRET_LIFETIME_MAX);
 582                 RANGECHK(SCTP_BASE_SYSCTL(sctp_rto_max_default), SCTPCTL_RTO_MAX_MIN, SCTPCTL_RTO_MAX_MAX);
 583                 RANGECHK(SCTP_BASE_SYSCTL(sctp_rto_min_default), SCTPCTL_RTO_MIN_MIN, SCTPCTL_RTO_MIN_MAX);
 584                 RANGECHK(SCTP_BASE_SYSCTL(sctp_rto_initial_default), SCTPCTL_RTO_INITIAL_MIN, SCTPCTL_RTO_INITIAL_MAX);
 585                 RANGECHK(SCTP_BASE_SYSCTL(sctp_init_rto_max_default), SCTPCTL_INIT_RTO_MAX_MIN, SCTPCTL_INIT_RTO_MAX_MAX);
 586                 RANGECHK(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default), SCTPCTL_VALID_COOKIE_LIFE_MIN, SCTPCTL_VALID_COOKIE_LIFE_MAX);
 587                 RANGECHK(SCTP_BASE_SYSCTL(sctp_init_rtx_max_default), SCTPCTL_INIT_RTX_MAX_MIN, SCTPCTL_INIT_RTX_MAX_MAX);
 588                 RANGECHK(SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default), SCTPCTL_ASSOC_RTX_MAX_MIN, SCTPCTL_ASSOC_RTX_MAX_MAX);
 589                 RANGECHK(SCTP_BASE_SYSCTL(sctp_path_rtx_max_default), SCTPCTL_PATH_RTX_MAX_MIN, SCTPCTL_PATH_RTX_MAX_MAX);
 590                 RANGECHK(SCTP_BASE_SYSCTL(sctp_add_more_threshold), SCTPCTL_ADD_MORE_ON_OUTPUT_MIN, SCTPCTL_ADD_MORE_ON_OUTPUT_MAX);
 591                 RANGECHK(SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default), SCTPCTL_OUTGOING_STREAMS_MIN, SCTPCTL_OUTGOING_STREAMS_MAX);
 592                 RANGECHK(SCTP_BASE_SYSCTL(sctp_cmt_on_off), SCTPCTL_CMT_ON_OFF_MIN, SCTPCTL_CMT_ON_OFF_MAX);
 593                 /* EY */
 594                 RANGECHK(SCTP_BASE_SYSCTL(sctp_nr_sack_on_off), SCTPCTL_NR_SACK_ON_OFF_MIN, SCTPCTL_NR_SACK_ON_OFF_MAX);
 595                 RANGECHK(SCTP_BASE_SYSCTL(sctp_cmt_use_dac), SCTPCTL_CMT_USE_DAC_MIN, SCTPCTL_CMT_USE_DAC_MAX);
 596                 RANGECHK(SCTP_BASE_SYSCTL(sctp_cmt_pf), SCTPCTL_CMT_PF_MIN, SCTPCTL_CMT_PF_MAX);
 597                 RANGECHK(SCTP_BASE_SYSCTL(sctp_use_cwnd_based_maxburst), SCTPCTL_CWND_MAXBURST_MIN, SCTPCTL_CWND_MAXBURST_MAX);
 598                 RANGECHK(SCTP_BASE_SYSCTL(sctp_early_fr), SCTPCTL_EARLY_FAST_RETRAN_MIN, SCTPCTL_EARLY_FAST_RETRAN_MAX);
 599                 RANGECHK(SCTP_BASE_SYSCTL(sctp_early_fr_msec), SCTPCTL_EARLY_FAST_RETRAN_MSEC_MIN, SCTPCTL_EARLY_FAST_RETRAN_MSEC_MAX);
 600                 RANGECHK(SCTP_BASE_SYSCTL(sctp_asconf_auth_nochk), SCTPCTL_ASCONF_AUTH_NOCHK_MIN, SCTPCTL_ASCONF_AUTH_NOCHK_MAX);
 601                 RANGECHK(SCTP_BASE_SYSCTL(sctp_auth_disable), SCTPCTL_AUTH_DISABLE_MIN, SCTPCTL_AUTH_DISABLE_MAX);
 602                 RANGECHK(SCTP_BASE_SYSCTL(sctp_nat_friendly), SCTPCTL_NAT_FRIENDLY_MIN, SCTPCTL_NAT_FRIENDLY_MAX);
 603                 RANGECHK(SCTP_BASE_SYSCTL(sctp_L2_abc_variable), SCTPCTL_ABC_L_VAR_MIN, SCTPCTL_ABC_L_VAR_MAX);
 604                 RANGECHK(SCTP_BASE_SYSCTL(sctp_mbuf_threshold_count), SCTPCTL_MAX_CHAINED_MBUFS_MIN, SCTPCTL_MAX_CHAINED_MBUFS_MAX);
 605                 RANGECHK(SCTP_BASE_SYSCTL(sctp_do_drain), SCTPCTL_DO_SCTP_DRAIN_MIN, SCTPCTL_DO_SCTP_DRAIN_MAX);
 606                 RANGECHK(SCTP_BASE_SYSCTL(sctp_hb_maxburst), SCTPCTL_HB_MAX_BURST_MIN, SCTPCTL_HB_MAX_BURST_MAX);
 607                 RANGECHK(SCTP_BASE_SYSCTL(sctp_abort_if_one_2_one_hits_limit), SCTPCTL_ABORT_AT_LIMIT_MIN, SCTPCTL_ABORT_AT_LIMIT_MAX);
 608                 RANGECHK(SCTP_BASE_SYSCTL(sctp_strict_data_order), SCTPCTL_STRICT_DATA_ORDER_MIN, SCTPCTL_STRICT_DATA_ORDER_MAX);
 609                 RANGECHK(SCTP_BASE_SYSCTL(sctp_min_residual), SCTPCTL_MIN_RESIDUAL_MIN, SCTPCTL_MIN_RESIDUAL_MAX);
 610                 RANGECHK(SCTP_BASE_SYSCTL(sctp_max_retran_chunk), SCTPCTL_MAX_RETRAN_CHUNK_MIN, SCTPCTL_MAX_RETRAN_CHUNK_MAX);
 611                 RANGECHK(SCTP_BASE_SYSCTL(sctp_logging_level), SCTPCTL_LOGGING_LEVEL_MIN, SCTPCTL_LOGGING_LEVEL_MAX);
 612                 RANGECHK(SCTP_BASE_SYSCTL(sctp_default_cc_module), SCTPCTL_DEFAULT_CC_MODULE_MIN, SCTPCTL_DEFAULT_CC_MODULE_MAX);
 613                 RANGECHK(SCTP_BASE_SYSCTL(sctp_default_frag_interleave), SCTPCTL_DEFAULT_FRAG_INTERLEAVE_MIN, SCTPCTL_DEFAULT_FRAG_INTERLEAVE_MAX);
 614                 RANGECHK(SCTP_BASE_SYSCTL(sctp_vtag_time_wait), SCTPCTL_TIME_WAIT_MIN, SCTPCTL_TIME_WAIT_MAX);
 615
 616 #if defined(__FreeBSD__) || defined(SCTP_APPLE_MOBILITY_BASE)
 617                 RANGECHK(SCTP_BASE_SYSCTL(sctp_mobility_base), SCTPCTL_MOBILITY_BASE_MIN, SCTPCTL_MOBILITY_BASE_MAX);
 618 #endif
 619 #if defined(__FreeBSD__) || defined(SCTP_APPLE_MOBILITY_FASTHANDOFF)
 620                 RANGECHK(SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff), SCTPCTL_MOBILITY_FASTHANDOFF_MIN, SCTPCTL_MOBILITY_FASTHANDOFF_MAX);
 621 #endif
 622                 RANGECHK(SCTP_BASE_SYSCTL(sctp_udp_tunneling_for_client_enable), SCTPCTL_UDP_TUNNELING_FOR_CLIENT_ENABLE_MIN, SCTPCTL_UDP_TUNNELING_FOR_CLIENT_ENABLE_MAX);
 623                 RANGECHK(SCTP_BASE_SYSCTL(sctp_enable_sack_immediately), SCTPCTL_SACK_IMMEDIATELY_ENABLE_MIN, SCTPCTL_SACK_IMMEDIATELY_ENABLE_MAX);
 624                 RANGECHK(SCTP_BASE_SYSCTL(sctp_inits_include_nat_friendly), SCTPCTL_NAT_FRIENDLY_INITS_MIN, SCTPCTL_NAT_FRIENDLY_INITS_MAX);
 625
 626 #ifdef SCTP_DEBUG
 627                 RANGECHK(SCTP_BASE_SYSCTL(sctp_debug_on), SCTPCTL_DEBUG_MIN, SCTPCTL_DEBUG_MAX);
 628 #endif
 629 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
 630                 RANGECHK(SCTP_BASE_SYSCTL(sctp_output_unlocked), SCTPCTL_OUTPUT_UNLOCKED_MIN, SCTPCTL_OUTPUT_UNLOCKED_MAX);
 631 #endif
 632         }
 633         return (error);
 634 }
 635
 636
 637
 638 #if defined(SCTP_LOCAL_TRACE_BUF)
 639 static int
 640 sysctl_sctp_cleartrace(SYSCTL_HANDLER_ARGS)
 641 {
 642         int error = 0;
 643
 644         memset(&SCTP_BASE_SYSCTL(sctp_log), 0, sizeof(struct sctp_log));
 645         return (error);
 646 }
 647
 648 #endif
 649
 650
 651 /*
 652  * sysctl definitions
 653  */
 654
 655 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, sendspace, CTLTYPE_INT | CTLFLAG_RW,
 656     &SCTP_BASE_SYSCTL(sctp_sendspace), 0, sysctl_sctp_check, "IU",
 657     SCTPCTL_MAXDGRAM_DESC);
 658
 659 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, recvspace, CTLTYPE_INT | CTLFLAG_RW,
 660     &SCTP_BASE_SYSCTL(sctp_recvspace), 0, sysctl_sctp_check, "IU",
 661     SCTPCTL_RECVSPACE_DESC);
 662
 663 #if defined(__FreeBSD__) || defined(SCTP_APPLE_AUTO_ASCONF)
 664 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, auto_asconf, CTLTYPE_INT | CTLFLAG_RW,
 665     &SCTP_BASE_SYSCTL(sctp_auto_asconf), 0, sysctl_sctp_check, "IU",
 666     SCTPCTL_AUTOASCONF_DESC);
 667 #endif
 668
 669 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, ecn_enable, CTLTYPE_INT | CTLFLAG_RW,
 670     &SCTP_BASE_SYSCTL(sctp_ecn_enable), 0, sysctl_sctp_check, "IU",
 671     SCTPCTL_ECN_ENABLE_DESC);
 672
 673 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, ecn_nonce, CTLTYPE_INT | CTLFLAG_RW,
 674     &SCTP_BASE_SYSCTL(sctp_ecn_nonce), 0, sysctl_sctp_check, "IU",
 675     SCTPCTL_ECN_NONCE_DESC);
 676
 677 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, strict_sacks, CTLTYPE_INT | CTLFLAG_RW,
 678     &SCTP_BASE_SYSCTL(sctp_strict_sacks), 0, sysctl_sctp_check, "IU",
 679     SCTPCTL_STRICT_SACKS_DESC);
 680
 681 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, loopback_nocsum, CTLTYPE_INT | CTLFLAG_RW,
 682     &SCTP_BASE_SYSCTL(sctp_no_csum_on_loopback), 0, sysctl_sctp_check, "IU",
 683     SCTPCTL_LOOPBACK_NOCSUM_DESC);
 684
 685 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, strict_init, CTLTYPE_INT | CTLFLAG_RW,
 686     &SCTP_BASE_SYSCTL(sctp_strict_init), 0, sysctl_sctp_check, "IU",
 687     SCTPCTL_STRICT_INIT_DESC);
 688
 689 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, peer_chkoh, CTLTYPE_INT | CTLFLAG_RW,
 690     &SCTP_BASE_SYSCTL(sctp_peer_chunk_oh), 0, sysctl_sctp_check, "IU",
 691     SCTPCTL_PEER_CHKOH_DESC);
 692
 693 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, maxburst, CTLTYPE_INT | CTLFLAG_RW,
 694     &SCTP_BASE_SYSCTL(sctp_max_burst_default), 0, sysctl_sctp_check, "IU",
 695     SCTPCTL_MAXBURST_DESC);
 696
 697 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, maxchunks, CTLTYPE_INT | CTLFLAG_RW,
 698     &SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue), 0, sysctl_sctp_check, "IU",
 699     SCTPCTL_MAXCHUNKS_DESC);
 700
 701 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, tcbhashsize, CTLTYPE_INT | CTLFLAG_RW,
 702     &SCTP_BASE_SYSCTL(sctp_hashtblsize), 0, sysctl_sctp_check, "IU",
 703     SCTPCTL_TCBHASHSIZE_DESC);
 704
 705 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, pcbhashsize, CTLTYPE_INT | CTLFLAG_RW,
 706     &SCTP_BASE_SYSCTL(sctp_pcbtblsize), 0, sysctl_sctp_check, "IU",
 707     SCTPCTL_PCBHASHSIZE_DESC);
 708
 709 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, min_split_point, CTLTYPE_INT | CTLFLAG_RW,
 710     &SCTP_BASE_SYSCTL(sctp_min_split_point), 0, sysctl_sctp_check, "IU",
 711     SCTPCTL_MIN_SPLIT_POINT_DESC);
 712
 713 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, chunkscale, CTLTYPE_INT | CTLFLAG_RW,
 714     &SCTP_BASE_SYSCTL(sctp_chunkscale), 0, sysctl_sctp_check, "IU",
 715     SCTPCTL_CHUNKSCALE_DESC);
 716
 717 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, delayed_sack_time, CTLTYPE_INT | CTLFLAG_RW,
 718     &SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default), 0, sysctl_sctp_check, "IU",
 719     SCTPCTL_DELAYED_SACK_TIME_DESC);
 720
 721 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, sack_freq, CTLTYPE_INT | CTLFLAG_RW,
 722     &SCTP_BASE_SYSCTL(sctp_sack_freq_default), 0, sysctl_sctp_check, "IU",
 723     SCTPCTL_SACK_FREQ_DESC);
 724
 725 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, sys_resource, CTLTYPE_INT | CTLFLAG_RW,
 726     &SCTP_BASE_SYSCTL(sctp_system_free_resc_limit), 0, sysctl_sctp_check, "IU",
 727     SCTPCTL_SYS_RESOURCE_DESC);
 728
 729 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, asoc_resource, CTLTYPE_INT | CTLFLAG_RW,
 730     &SCTP_BASE_SYSCTL(sctp_asoc_free_resc_limit), 0, sysctl_sctp_check, "IU",
 731     SCTPCTL_ASOC_RESOURCE_DESC);
 732
 733 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, heartbeat_interval, CTLTYPE_INT | CTLFLAG_RW,
 734     &SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default), 0, sysctl_sctp_check, "IU",
 735     SCTPCTL_HEARTBEAT_INTERVAL_DESC);
 736
 737 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, pmtu_raise_time, CTLTYPE_INT | CTLFLAG_RW,
 738     &SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default), 0, sysctl_sctp_check, "IU",
 739     SCTPCTL_PMTU_RAISE_TIME_DESC);
 740
 741 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, shutdown_guard_time, CTLTYPE_INT | CTLFLAG_RW,
 742     &SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default), 0, sysctl_sctp_check, "IU",
 743     SCTPCTL_SHUTDOWN_GUARD_TIME_DESC);
 744
 745 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, secret_lifetime, CTLTYPE_INT | CTLFLAG_RW,
 746     &SCTP_BASE_SYSCTL(sctp_secret_lifetime_default), 0, sysctl_sctp_check, "IU",
 747     SCTPCTL_SECRET_LIFETIME_DESC);
 748
 749 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, rto_max, CTLTYPE_INT | CTLFLAG_RW,
 750     &SCTP_BASE_SYSCTL(sctp_rto_max_default), 0, sysctl_sctp_check, "IU",
 751     SCTPCTL_RTO_MAX_DESC);
 752
 753 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, rto_min, CTLTYPE_INT | CTLFLAG_RW,
 754     &SCTP_BASE_SYSCTL(sctp_rto_min_default), 0, sysctl_sctp_check, "IU",
 755     SCTPCTL_RTO_MIN_DESC);
 756
 757 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, rto_initial, CTLTYPE_INT | CTLFLAG_RW,
 758     &SCTP_BASE_SYSCTL(sctp_rto_initial_default), 0, sysctl_sctp_check, "IU",
 759     SCTPCTL_RTO_INITIAL_DESC);
 760
 761 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, init_rto_max, CTLTYPE_INT | CTLFLAG_RW,
 762     &SCTP_BASE_SYSCTL(sctp_init_rto_max_default), 0, sysctl_sctp_check, "IU",
 763     SCTPCTL_INIT_RTO_MAX_DESC);
 764
 765 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, valid_cookie_life, CTLTYPE_INT | CTLFLAG_RW,
 766     &SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default), 0, sysctl_sctp_check, "IU",
 767     SCTPCTL_VALID_COOKIE_LIFE_DESC);
 768
 769 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, init_rtx_max, CTLTYPE_INT | CTLFLAG_RW,
 770     &SCTP_BASE_SYSCTL(sctp_init_rtx_max_default), 0, sysctl_sctp_check, "IU",
 771     SCTPCTL_INIT_RTX_MAX_DESC);
 772
 773 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, assoc_rtx_max, CTLTYPE_INT | CTLFLAG_RW,
 774     &SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default), 0, sysctl_sctp_check, "IU",
 775     SCTPCTL_ASSOC_RTX_MAX_DESC);
 776
 777 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, path_rtx_max, CTLTYPE_INT | CTLFLAG_RW,
 778     &SCTP_BASE_SYSCTL(sctp_path_rtx_max_default), 0, sysctl_sctp_check, "IU",
 779     SCTPCTL_PATH_RTX_MAX_DESC);
 780
 781 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, add_more_on_output, CTLTYPE_INT | CTLFLAG_RW,
 782     &SCTP_BASE_SYSCTL(sctp_add_more_threshold), 0, sysctl_sctp_check, "IU",
 783     SCTPCTL_ADD_MORE_ON_OUTPUT_DESC);
 784
 785 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, outgoing_streams, CTLTYPE_INT | CTLFLAG_RW,
 786     &SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default), 0, sysctl_sctp_check, "IU",
 787     SCTPCTL_OUTGOING_STREAMS_DESC);
 788
 789 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, cmt_on_off, CTLTYPE_INT | CTLFLAG_RW,
 790     &SCTP_BASE_SYSCTL(sctp_cmt_on_off), 0, sysctl_sctp_check, "IU",
 791     SCTPCTL_CMT_ON_OFF_DESC);
 792
 793 /* EY */
 794 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, nr_sack_on_off, CTLTYPE_INT | CTLFLAG_RW,
 795     &SCTP_BASE_SYSCTL(sctp_nr_sack_on_off), 0, sysctl_sctp_check, "IU",
 796     SCTPCTL_NR_SACK_ON_OFF_DESC);
 797
 798 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, cmt_use_dac, CTLTYPE_INT | CTLFLAG_RW,
 799     &SCTP_BASE_SYSCTL(sctp_cmt_use_dac), 0, sysctl_sctp_check, "IU",
 800     SCTPCTL_CMT_USE_DAC_DESC);
 801
 802 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, cmt_pf, CTLTYPE_INT | CTLFLAG_RW,
 803     &SCTP_BASE_SYSCTL(sctp_cmt_pf), 0, sysctl_sctp_check, "IU",
 804     SCTPCTL_CMT_PF_DESC);
 805
 806 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, cwnd_maxburst, CTLTYPE_INT | CTLFLAG_RW,
 807     &SCTP_BASE_SYSCTL(sctp_use_cwnd_based_maxburst), 0, sysctl_sctp_check, "IU",
 808     SCTPCTL_CWND_MAXBURST_DESC);
 809
 810 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, early_fast_retran, CTLTYPE_INT | CTLFLAG_RW,
 811     &SCTP_BASE_SYSCTL(sctp_early_fr), 0, sysctl_sctp_check, "IU",
 812     SCTPCTL_EARLY_FAST_RETRAN_DESC);
 813
 814 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, early_fast_retran_msec, CTLTYPE_INT | CTLFLAG_RW,
 815     &SCTP_BASE_SYSCTL(sctp_early_fr_msec), 0, sysctl_sctp_check, "IU",
 816     SCTPCTL_EARLY_FAST_RETRAN_MSEC_DESC);
 817
 818 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, asconf_auth_nochk, CTLTYPE_INT | CTLFLAG_RW,
 819     &SCTP_BASE_SYSCTL(sctp_asconf_auth_nochk), 0, sysctl_sctp_check, "IU",
 820     SCTPCTL_ASCONF_AUTH_NOCHK_DESC);
 821
 822 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, auth_disable, CTLTYPE_INT | CTLFLAG_RW,
 823     &SCTP_BASE_SYSCTL(sctp_auth_disable), 0, sysctl_sctp_check, "IU",
 824     SCTPCTL_AUTH_DISABLE_DESC);
 825
 826 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, nat_friendly, CTLTYPE_INT | CTLFLAG_RW,
 827     &SCTP_BASE_SYSCTL(sctp_nat_friendly), 0, sysctl_sctp_check, "IU",
 828     SCTPCTL_NAT_FRIENDLY_DESC);
 829
 830 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, abc_l_var, CTLTYPE_INT | CTLFLAG_RW,
 831     &SCTP_BASE_SYSCTL(sctp_L2_abc_variable), 0, sysctl_sctp_check, "IU",
 832     SCTPCTL_ABC_L_VAR_DESC);
 833
 834 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, max_chained_mbufs, CTLTYPE_INT | CTLFLAG_RW,
 835     &SCTP_BASE_SYSCTL(sctp_mbuf_threshold_count), 0, sysctl_sctp_check, "IU",
 836     SCTPCTL_MAX_CHAINED_MBUFS_DESC);
 837
 838 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, do_sctp_drain, CTLTYPE_INT | CTLFLAG_RW,
 839     &SCTP_BASE_SYSCTL(sctp_do_drain), 0, sysctl_sctp_check, "IU",
 840     SCTPCTL_DO_SCTP_DRAIN_DESC);
 841
 842 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, hb_max_burst, CTLTYPE_INT | CTLFLAG_RW,
 843     &SCTP_BASE_SYSCTL(sctp_hb_maxburst), 0, sysctl_sctp_check, "IU",
 844     SCTPCTL_HB_MAX_BURST_DESC);
 845
 846 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, abort_at_limit, CTLTYPE_INT | CTLFLAG_RW,
 847     &SCTP_BASE_SYSCTL(sctp_abort_if_one_2_one_hits_limit), 0, sysctl_sctp_check, "IU",
 848     SCTPCTL_ABORT_AT_LIMIT_DESC);
 849
 850 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, strict_data_order, CTLTYPE_INT | CTLFLAG_RW,
 851     &SCTP_BASE_SYSCTL(sctp_strict_data_order), 0, sysctl_sctp_check, "IU",
 852     SCTPCTL_STRICT_DATA_ORDER_DESC);
 853
 854 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, min_residual, CTLTYPE_INT | CTLFLAG_RW,
 855     &SCTP_BASE_SYSCTL(sctp_min_residual), 0, sysctl_sctp_check, "IU",
 856     SCTPCTL_MIN_RESIDUAL_DESC);
 857
 858 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, max_retran_chunk, CTLTYPE_INT | CTLFLAG_RW,
 859     &SCTP_BASE_SYSCTL(sctp_max_retran_chunk), 0, sysctl_sctp_check, "IU",
 860     SCTPCTL_MAX_RETRAN_CHUNK_DESC);
 861
 862 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, log_level, CTLTYPE_INT | CTLFLAG_RW,
 863     &SCTP_BASE_SYSCTL(sctp_logging_level), 0, sysctl_sctp_check, "IU",
 864     SCTPCTL_LOGGING_LEVEL_DESC);
 865
 866 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, default_cc_module, CTLTYPE_INT | CTLFLAG_RW,
 867     &SCTP_BASE_SYSCTL(sctp_default_cc_module), 0, sysctl_sctp_check, "IU",
 868     SCTPCTL_DEFAULT_CC_MODULE_DESC);
 869
 870 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, default_frag_interleave, CTLTYPE_INT | CTLFLAG_RW,
 871     &SCTP_BASE_SYSCTL(sctp_default_frag_interleave), 0, sysctl_sctp_check, "IU",
 872     SCTPCTL_DEFAULT_FRAG_INTERLEAVE_DESC);
 873
 874 #if defined(__FreeBSD__) || defined(SCTP_APPLE_MOBILITY_BASE)
 875 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, mobility_base, CTLTYPE_INT | CTLFLAG_RW,
 876     &SCTP_BASE_SYSCTL(sctp_mobility_base), 0, sysctl_sctp_check, "IU",
 877     SCTPCTL_MOBILITY_BASE_DESC);
 878 #endif
 879
 880 #if defined(__FreeBSD__) || defined(SCTP_APPLE_MOBILITY_FASTHANDOFF)
 881 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, mobility_fasthandoff, CTLTYPE_INT | CTLFLAG_RW,
 882     &SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff), 0, sysctl_sctp_check, "IU",
 883     SCTPCTL_MOBILITY_FASTHANDOFF_DESC);
 884 #endif
 885
 886 #if defined(SCTP_LOCAL_TRACE_BUF)
 887 SYSCTL_STRUCT(_net_inet_sctp, OID_AUTO, log, CTLFLAG_RD,
 888     &SCTP_BASE_SYSCTL(sctp_log), sctp_log,
 889     "SCTP logging (struct sctp_log)");
 890
 891 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, clear_trace, CTLTYPE_OPAQUE | CTLFLAG_RW,
 892     &SCTP_BASE_SYSCTL(sctp_log), 0, sysctl_sctp_cleartrace, "IU",
 893     "Clear SCTP Logging buffer");
 894
 895
 896
 897 #endif
 898
 899 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, udp_tunneling_for_client_enable, CTLTYPE_INT | CTLFLAG_RW,
 900     &SCTP_BASE_SYSCTL(sctp_udp_tunneling_for_client_enable), 0, sysctl_sctp_check, "IU",
 901     SCTPCTL_UDP_TUNNELING_FOR_CLIENT_ENABLE_DESC);
 902
 903 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, udp_tunneling_port, CTLTYPE_INT | CTLFLAG_RW,
 904     &SCTP_BASE_SYSCTL(sctp_udp_tunneling_port), 0, sysctl_sctp_udp_tunneling_check, "IU",
 905     SCTPCTL_UDP_TUNNELING_PORT_DESC);
 906
 907 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, enable_sack_immediately, CTLTYPE_INT | CTLFLAG_RW,
 908     &SCTP_BASE_SYSCTL(sctp_enable_sack_immediately), 0, sysctl_sctp_check, "IU",
 909     SCTPCTL_SACK_IMMEDIATELY_ENABLE_DESC);
 910
 911 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, nat_friendly_init, CTLTYPE_INT | CTLFLAG_RW,
 912     &SCTP_BASE_SYSCTL(sctp_inits_include_nat_friendly), 0, sysctl_sctp_check, "IU",
 913     SCTPCTL_NAT_FRIENDLY_INITS_DESC);
 914
 915 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, vtag_time_wait, CTLTYPE_INT | CTLFLAG_RW,
 916     &SCTP_BASE_SYSCTL(sctp_vtag_time_wait), 0, sysctl_sctp_check, "IU",
 917     SCTPCTL_TIME_WAIT_DESC);
 918
 919 #ifdef SCTP_DEBUG
 920 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, debug, CTLTYPE_INT | CTLFLAG_RW,
 921     &SCTP_BASE_SYSCTL(sctp_debug_on), 0, sysctl_sctp_check, "IU",
 922     SCTPCTL_DEBUG_DESC);
 923 #endif                          /* SCTP_DEBUG */
 924
 925
 926 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
 927 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, output_unlocked, CTLTYPE_INT | CTLFLAG_RW,
 928     &SCTP_BASE_SYSCTL(sctp_output_unlocked), 0, sysctl_sctp_check, "IU",
 929     SCTPCTL_OUTPUT_UNLOCKED_DESC);
 930 #endif
 931
 932 SYSCTL_STRUCT(_net_inet_sctp, OID_AUTO, stats, CTLFLAG_RW,
 933     &SCTP_BASE_STATS, sctpstat,
 934     "SCTP statistics (struct sctp_stat)");
 935
 936 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, assoclist, CTLFLAG_RD,
 937     0, 0, sctp_assoclist,
 938     "S,xassoc", "List of active SCTP associations");