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