sys/netinet/sctp_sysctl.c

   1 /*-
   2  * Copyright (c) 2007, by Cisco Systems, Inc. All rights reserved.
   3  * Copyright (c) 2008-2011, by Randall Stewart. All rights reserved.
   4  * Copyright (c) 2008-2011, by Michael Tuexen. All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions are met:
   8  *
   9  * a) Redistributions of source code must retain the above copyright notice,
  10  *   this list of conditions and the following disclaimer.
  11  *
  12  * b) Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in
  14  *   the documentation and/or other materials provided with the distribution.
  15  *
  16  * c) Neither the name of Cisco Systems, Inc. nor the names of its
  17  *    contributors may be used to endorse or promote products derived
  18  *    from this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  22  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  24  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  30  * THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <sys/cdefs.h>
  34 __FBSDID("$FreeBSD$");
  35
  36 #include <netinet/sctp_os.h>
  37 #include <netinet/sctp.h>
  38 #include <netinet/sctp_constants.h>
  39 #include <netinet/sctp_sysctl.h>
  40 #include <netinet/sctp_pcb.h>
  41 #include <netinet/sctputil.h>
  42 #include <netinet/sctp_output.h>
  43 #include <sys/smp.h>
  44
  45 /*
  46  * sysctl tunable variables
  47  */
  48
  49 void
  50 sctp_init_sysctls()
  51 {
  52         SCTP_BASE_SYSCTL(sctp_sendspace) = SCTPCTL_MAXDGRAM_DEFAULT;
  53         SCTP_BASE_SYSCTL(sctp_recvspace) = SCTPCTL_RECVSPACE_DEFAULT;
  54         SCTP_BASE_SYSCTL(sctp_auto_asconf) = SCTPCTL_AUTOASCONF_DEFAULT;
  55         SCTP_BASE_SYSCTL(sctp_multiple_asconfs) = SCTPCTL_MULTIPLEASCONFS_DEFAULT;
  56         SCTP_BASE_SYSCTL(sctp_ecn_enable) = SCTPCTL_ECN_ENABLE_DEFAULT;
  57         SCTP_BASE_SYSCTL(sctp_strict_sacks) = SCTPCTL_STRICT_SACKS_DEFAULT;
  58 #if !defined(SCTP_WITH_NO_CSUM)
  59         SCTP_BASE_SYSCTL(sctp_no_csum_on_loopback) = SCTPCTL_LOOPBACK_NOCSUM_DEFAULT;
  60 #endif
  61         SCTP_BASE_SYSCTL(sctp_strict_init) = SCTPCTL_STRICT_INIT_DEFAULT;
  62         SCTP_BASE_SYSCTL(sctp_peer_chunk_oh) = SCTPCTL_PEER_CHKOH_DEFAULT;
  63         SCTP_BASE_SYSCTL(sctp_max_burst_default) = SCTPCTL_MAXBURST_DEFAULT;
  64         SCTP_BASE_SYSCTL(sctp_fr_max_burst_default) = SCTPCTL_FRMAXBURST_DEFAULT;
  65         SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue) = SCTPCTL_MAXCHUNKS_DEFAULT;
  66         SCTP_BASE_SYSCTL(sctp_hashtblsize) = SCTPCTL_TCBHASHSIZE_DEFAULT;
  67         SCTP_BASE_SYSCTL(sctp_pcbtblsize) = SCTPCTL_PCBHASHSIZE_DEFAULT;
  68         SCTP_BASE_SYSCTL(sctp_min_split_point) = SCTPCTL_MIN_SPLIT_POINT_DEFAULT;
  69         SCTP_BASE_SYSCTL(sctp_chunkscale) = SCTPCTL_CHUNKSCALE_DEFAULT;
  70         SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default) = SCTPCTL_DELAYED_SACK_TIME_DEFAULT;
  71         SCTP_BASE_SYSCTL(sctp_sack_freq_default) = SCTPCTL_SACK_FREQ_DEFAULT;
  72         SCTP_BASE_SYSCTL(sctp_system_free_resc_limit) = SCTPCTL_SYS_RESOURCE_DEFAULT;
  73         SCTP_BASE_SYSCTL(sctp_asoc_free_resc_limit) = SCTPCTL_ASOC_RESOURCE_DEFAULT;
  74         SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default) = SCTPCTL_HEARTBEAT_INTERVAL_DEFAULT;
  75         SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default) = SCTPCTL_PMTU_RAISE_TIME_DEFAULT;
  76         SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default) = SCTPCTL_SHUTDOWN_GUARD_TIME_DEFAULT;
  77         SCTP_BASE_SYSCTL(sctp_secret_lifetime_default) = SCTPCTL_SECRET_LIFETIME_DEFAULT;
  78         SCTP_BASE_SYSCTL(sctp_rto_max_default) = SCTPCTL_RTO_MAX_DEFAULT;
  79         SCTP_BASE_SYSCTL(sctp_rto_min_default) = SCTPCTL_RTO_MIN_DEFAULT;
  80         SCTP_BASE_SYSCTL(sctp_rto_initial_default) = SCTPCTL_RTO_INITIAL_DEFAULT;
  81         SCTP_BASE_SYSCTL(sctp_init_rto_max_default) = SCTPCTL_INIT_RTO_MAX_DEFAULT;
  82         SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default) = SCTPCTL_VALID_COOKIE_LIFE_DEFAULT;
  83         SCTP_BASE_SYSCTL(sctp_init_rtx_max_default) = SCTPCTL_INIT_RTX_MAX_DEFAULT;
  84         SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default) = SCTPCTL_ASSOC_RTX_MAX_DEFAULT;
  85         SCTP_BASE_SYSCTL(sctp_path_rtx_max_default) = SCTPCTL_PATH_RTX_MAX_DEFAULT;
  86         SCTP_BASE_SYSCTL(sctp_path_pf_threshold) = SCTPCTL_PATH_PF_THRESHOLD_DEFAULT;
  87         SCTP_BASE_SYSCTL(sctp_add_more_threshold) = SCTPCTL_ADD_MORE_ON_OUTPUT_DEFAULT;
  88         SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default) = SCTPCTL_OUTGOING_STREAMS_DEFAULT;
  89         SCTP_BASE_SYSCTL(sctp_cmt_on_off) = SCTPCTL_CMT_ON_OFF_DEFAULT;
  90         /* EY */
  91         SCTP_BASE_SYSCTL(sctp_nr_sack_on_off) = SCTPCTL_NR_SACK_ON_OFF_DEFAULT;
  92         SCTP_BASE_SYSCTL(sctp_cmt_use_dac) = SCTPCTL_CMT_USE_DAC_DEFAULT;
  93         SCTP_BASE_SYSCTL(sctp_use_cwnd_based_maxburst) = SCTPCTL_CWND_MAXBURST_DEFAULT;
  94         SCTP_BASE_SYSCTL(sctp_asconf_auth_nochk) = SCTPCTL_ASCONF_AUTH_NOCHK_DEFAULT;
  95         SCTP_BASE_SYSCTL(sctp_auth_disable) = SCTPCTL_AUTH_DISABLE_DEFAULT;
  96         SCTP_BASE_SYSCTL(sctp_nat_friendly) = SCTPCTL_NAT_FRIENDLY_DEFAULT;
  97         SCTP_BASE_SYSCTL(sctp_L2_abc_variable) = SCTPCTL_ABC_L_VAR_DEFAULT;
  98         SCTP_BASE_SYSCTL(sctp_mbuf_threshold_count) = SCTPCTL_MAX_CHAINED_MBUFS_DEFAULT;
  99         SCTP_BASE_SYSCTL(sctp_do_drain) = SCTPCTL_DO_SCTP_DRAIN_DEFAULT;
 100         SCTP_BASE_SYSCTL(sctp_hb_maxburst) = SCTPCTL_HB_MAX_BURST_DEFAULT;
 101         SCTP_BASE_SYSCTL(sctp_abort_if_one_2_one_hits_limit) = SCTPCTL_ABORT_AT_LIMIT_DEFAULT;
 102         SCTP_BASE_SYSCTL(sctp_strict_data_order) = SCTPCTL_STRICT_DATA_ORDER_DEFAULT;
 103         SCTP_BASE_SYSCTL(sctp_min_residual) = SCTPCTL_MIN_RESIDUAL_DEFAULT;
 104         SCTP_BASE_SYSCTL(sctp_max_retran_chunk) = SCTPCTL_MAX_RETRAN_CHUNK_DEFAULT;
 105         SCTP_BASE_SYSCTL(sctp_logging_level) = SCTPCTL_LOGGING_LEVEL_DEFAULT;
 106         /* JRS - Variable for default congestion control module */
 107         SCTP_BASE_SYSCTL(sctp_default_cc_module) = SCTPCTL_DEFAULT_CC_MODULE_DEFAULT;
 108         /* RS - Variable for default stream scheduling module */
 109         SCTP_BASE_SYSCTL(sctp_default_ss_module) = SCTPCTL_DEFAULT_SS_MODULE_DEFAULT;
 110         SCTP_BASE_SYSCTL(sctp_default_frag_interleave) = SCTPCTL_DEFAULT_FRAG_INTERLEAVE_DEFAULT;
 111         SCTP_BASE_SYSCTL(sctp_mobility_base) = SCTPCTL_MOBILITY_BASE_DEFAULT;
 112         SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) = SCTPCTL_MOBILITY_FASTHANDOFF_DEFAULT;
 113         SCTP_BASE_SYSCTL(sctp_vtag_time_wait) = SCTPCTL_TIME_WAIT_DEFAULT;
 114         SCTP_BASE_SYSCTL(sctp_buffer_splitting) = SCTPCTL_BUFFER_SPLITTING_DEFAULT;
 115         SCTP_BASE_SYSCTL(sctp_initial_cwnd) = SCTPCTL_INITIAL_CWND_DEFAULT;
 116         SCTP_BASE_SYSCTL(sctp_rttvar_bw) = SCTPCTL_RTTVAR_BW_DEFAULT;
 117         SCTP_BASE_SYSCTL(sctp_rttvar_rtt) = SCTPCTL_RTTVAR_RTT_DEFAULT;
 118         SCTP_BASE_SYSCTL(sctp_rttvar_eqret) = SCTPCTL_RTTVAR_EQRET_DEFAULT;
 119         SCTP_BASE_SYSCTL(sctp_steady_step) = SCTPCTL_RTTVAR_STEADYS_DEFAULT;
 120         SCTP_BASE_SYSCTL(sctp_use_dccc_ecn) = SCTPCTL_RTTVAR_DCCCECN_DEFAULT;
 121
 122 #if defined(SCTP_LOCAL_TRACE_BUF)
 123         memset(&SCTP_BASE_SYSCTL(sctp_log), 0, sizeof(struct sctp_log));
 124 #endif
 125         SCTP_BASE_SYSCTL(sctp_udp_tunneling_for_client_enable) = SCTPCTL_UDP_TUNNELING_FOR_CLIENT_ENABLE_DEFAULT;
 126         SCTP_BASE_SYSCTL(sctp_udp_tunneling_port) = SCTPCTL_UDP_TUNNELING_PORT_DEFAULT;
 127         SCTP_BASE_SYSCTL(sctp_enable_sack_immediately) = SCTPCTL_SACK_IMMEDIATELY_ENABLE_DEFAULT;
 128         SCTP_BASE_SYSCTL(sctp_inits_include_nat_friendly) = SCTPCTL_NAT_FRIENDLY_INITS_DEFAULT;
 129 #if defined(SCTP_DEBUG)
 130         SCTP_BASE_SYSCTL(sctp_debug_on) = SCTPCTL_DEBUG_DEFAULT;
 131 #endif
 132 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
 133         SCTP_BASE_SYSCTL(sctp_output_unlocked) = SCTPCTL_OUTPUT_UNLOCKED_DEFAULT;
 134 #endif
 135 }
 136
 137
 138 /* It returns an upper limit. No filtering is done here */
 139 static unsigned int
 140 number_of_addresses(struct sctp_inpcb *inp)
 141 {
 142         int cnt;
 143         struct sctp_vrf *vrf;
 144         struct sctp_ifn *sctp_ifn;
 145         struct sctp_ifa *sctp_ifa;
 146         struct sctp_laddr *laddr;
 147
 148         cnt = 0;
 149         /* neither Mac OS X nor FreeBSD support mulitple routing functions */
 150         if ((vrf = sctp_find_vrf(inp->def_vrf_id)) == NULL) {
 151                 return (0);
 152         }
 153         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
 154                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
 155                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
 156                                 switch (sctp_ifa->address.sa.sa_family) {
 157 #ifdef INET
 158                                 case AF_INET:
 159 #endif
 160 #ifdef INET6
 161                                 case AF_INET6:
 162 #endif
 163                                         cnt++;
 164                                         break;
 165                                 default:
 166                                         break;
 167                                 }
 168                         }
 169                 }
 170         } else {
 171                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
 172                         switch (laddr->ifa->address.sa.sa_family) {
 173 #ifdef INET
 174                         case AF_INET:
 175 #endif
 176 #ifdef INET6
 177                         case AF_INET6:
 178 #endif
 179                                 cnt++;
 180                                 break;
 181                         default:
 182                                 break;
 183                         }
 184                 }
 185         }
 186         return (cnt);
 187 }
 188
 189 static int
 190 copy_out_local_addresses(struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sysctl_req *req)
 191 {
 192         struct sctp_ifn *sctp_ifn;
 193         struct sctp_ifa *sctp_ifa;
 194         int loopback_scope, ipv4_local_scope, local_scope, site_scope;
 195         int ipv4_addr_legal, ipv6_addr_legal;
 196         struct sctp_vrf *vrf;
 197         struct xsctp_laddr xladdr;
 198         struct sctp_laddr *laddr;
 199         int error;
 200
 201         /* Turn on all the appropriate scope */
 202         if (stcb) {
 203                 /* use association specific values */
 204                 loopback_scope = stcb->asoc.loopback_scope;
 205                 ipv4_local_scope = stcb->asoc.ipv4_local_scope;
 206                 local_scope = stcb->asoc.local_scope;
 207                 site_scope = stcb->asoc.site_scope;
 208         } else {
 209                 /* use generic values for endpoints */
 210                 loopback_scope = 1;
 211                 ipv4_local_scope = 1;
 212                 local_scope = 1;
 213                 site_scope = 1;
 214         }
 215
 216         /* use only address families of interest */
 217         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
 218                 ipv6_addr_legal = 1;
 219                 if (SCTP_IPV6_V6ONLY(inp)) {
 220                         ipv4_addr_legal = 0;
 221                 } else {
 222                         ipv4_addr_legal = 1;
 223                 }
 224         } else {
 225                 ipv4_addr_legal = 1;
 226                 ipv6_addr_legal = 0;
 227         }
 228
 229         /* neither Mac OS X nor FreeBSD support mulitple routing functions */
 230         if ((vrf = sctp_find_vrf(inp->def_vrf_id)) == NULL) {
 231                 SCTP_INP_RUNLOCK(inp);
 232                 SCTP_INP_INFO_RUNLOCK();
 233                 return (-1);
 234         }
 235         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
 236                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
 237                         if ((loopback_scope == 0) && SCTP_IFN_IS_IFT_LOOP(sctp_ifn))
 238                                 /* Skip loopback if loopback_scope not set */
 239                                 continue;
 240                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
 241                                 if (stcb) {
 242                                         /*
 243                                          * ignore if blacklisted at
 244                                          * association level
 245                                          */
 246                                         if (sctp_is_addr_restricted(stcb, sctp_ifa))
 247                                                 continue;
 248                                 }
 249                                 switch (sctp_ifa->address.sa.sa_family) {
 250 #ifdef INET
 251                                 case AF_INET:
 252                                         if (ipv4_addr_legal) {
 253                                                 struct sockaddr_in *sin;
 254
 255                                                 sin = (struct sockaddr_in *)&sctp_ifa->address.sa;
 256                                                 if (sin->sin_addr.s_addr == 0)
 257                                                         continue;
 258                                                 if ((ipv4_local_scope == 0) && (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)))
 259                                                         continue;
 260                                         } else {
 261                                                 continue;
 262                                         }
 263                                         break;
 264 #endif
 265 #ifdef INET6
 266                                 case AF_INET6:
 267                                         if (ipv6_addr_legal) {
 268                                                 struct sockaddr_in6 *sin6;
 269
 270                                                 sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa;
 271                                                 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
 272                                                         continue;
 273                                                 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
 274                                                         if (local_scope == 0)
 275                                                                 continue;
 276                                                         if (sin6->sin6_scope_id == 0) {
 277                                                                 /*
 278                                                                  * bad link
 279                                                                  * local
 280                                                                  * address
 281                                                                  */
 282                                                                 if (sa6_recoverscope(sin6) != 0)
 283                                                                         continue;
 284                                                         }
 285                                                 }
 286                                                 if ((site_scope == 0) && (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)))
 287                                                         continue;
 288                                         } else {
 289                                                 continue;
 290                                         }
 291                                         break;
 292 #endif
 293                                 default:
 294                                         continue;
 295                                 }
 296                                 memset((void *)&xladdr, 0, sizeof(struct xsctp_laddr));
 297                                 memcpy((void *)&xladdr.address, (const void *)&sctp_ifa->address, sizeof(union sctp_sockstore));
 298                                 SCTP_INP_RUNLOCK(inp);
 299                                 SCTP_INP_INFO_RUNLOCK();
 300                                 error = SYSCTL_OUT(req, &xladdr, sizeof(struct xsctp_laddr));
 301                                 if (error) {
 302                                         return (error);
 303                                 } else {
 304                                         SCTP_INP_INFO_RLOCK();
 305                                         SCTP_INP_RLOCK(inp);
 306                                 }
 307                         }
 308                 }
 309         } else {
 310                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
 311                         /* ignore if blacklisted at association level */
 312                         if (stcb && sctp_is_addr_restricted(stcb, laddr->ifa))
 313                                 continue;
 314                         memset((void *)&xladdr, 0, sizeof(struct xsctp_laddr));
 315                         memcpy((void *)&xladdr.address, (const void *)&laddr->ifa->address, sizeof(union sctp_sockstore));
 316                         xladdr.start_time.tv_sec = (uint32_t) laddr->start_time.tv_sec;
 317                         xladdr.start_time.tv_usec = (uint32_t) laddr->start_time.tv_usec;
 318                         SCTP_INP_RUNLOCK(inp);
 319                         SCTP_INP_INFO_RUNLOCK();
 320                         error = SYSCTL_OUT(req, &xladdr, sizeof(struct xsctp_laddr));
 321                         if (error) {
 322                                 return (error);
 323                         } else {
 324                                 SCTP_INP_INFO_RLOCK();
 325                                 SCTP_INP_RLOCK(inp);
 326                         }
 327                 }
 328         }
 329         memset((void *)&xladdr, 0, sizeof(struct xsctp_laddr));
 330         xladdr.last = 1;
 331         SCTP_INP_RUNLOCK(inp);
 332         SCTP_INP_INFO_RUNLOCK();
 333         error = SYSCTL_OUT(req, &xladdr, sizeof(struct xsctp_laddr));
 334
 335         if (error) {
 336                 return (error);
 337         } else {
 338                 SCTP_INP_INFO_RLOCK();
 339                 SCTP_INP_RLOCK(inp);
 340                 return (0);
 341         }
 342 }
 343
 344 /*
 345  * sysctl functions
 346  */
 347 static int
 348 sctp_assoclist(SYSCTL_HANDLER_ARGS)
 349 {
 350         unsigned int number_of_endpoints;
 351         unsigned int number_of_local_addresses;
 352         unsigned int number_of_associations;
 353         unsigned int number_of_remote_addresses;
 354         unsigned int n;
 355         int error;
 356         struct sctp_inpcb *inp;
 357         struct sctp_tcb *stcb;
 358         struct sctp_nets *net;
 359         struct xsctp_inpcb xinpcb;
 360         struct xsctp_tcb xstcb;
 361         struct xsctp_raddr xraddr;
 362         struct socket *so;
 363
 364         number_of_endpoints = 0;
 365         number_of_local_addresses = 0;
 366         number_of_associations = 0;
 367         number_of_remote_addresses = 0;
 368
 369         SCTP_INP_INFO_RLOCK();
 370         if (req->oldptr == USER_ADDR_NULL) {
 371                 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
 372                         SCTP_INP_RLOCK(inp);
 373                         number_of_endpoints++;
 374                         number_of_local_addresses += number_of_addresses(inp);
 375                         LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
 376                                 number_of_associations++;
 377                                 number_of_local_addresses += number_of_addresses(inp);
 378                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 379                                         number_of_remote_addresses++;
 380                                 }
 381                         }
 382                         SCTP_INP_RUNLOCK(inp);
 383                 }
 384                 SCTP_INP_INFO_RUNLOCK();
 385                 n = (number_of_endpoints + 1) * sizeof(struct xsctp_inpcb) +
 386                     (number_of_local_addresses + number_of_endpoints + number_of_associations) * sizeof(struct xsctp_laddr) +
 387                     (number_of_associations + number_of_endpoints) * sizeof(struct xsctp_tcb) +
 388                     (number_of_remote_addresses + number_of_associations) * sizeof(struct xsctp_raddr);
 389
 390                 /* request some more memory than needed */
 391                 req->oldidx = (n + n / 8);
 392                 return 0;
 393         }
 394         if (req->newptr != USER_ADDR_NULL) {
 395                 SCTP_INP_INFO_RUNLOCK();
 396                 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_SYSCTL, EPERM);
 397                 return EPERM;
 398         }
 399         LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
 400                 SCTP_INP_RLOCK(inp);
 401                 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
 402                         /* if its allgone it is being freed - skip it  */
 403                         goto skip;
 404                 }
 405                 xinpcb.last = 0;
 406                 xinpcb.local_port = ntohs(inp->sctp_lport);
 407                 xinpcb.flags = inp->sctp_flags;
 408                 xinpcb.features = inp->sctp_features;
 409                 xinpcb.total_sends = inp->total_sends;
 410                 xinpcb.total_recvs = inp->total_recvs;
 411                 xinpcb.total_nospaces = inp->total_nospaces;
 412                 xinpcb.fragmentation_point = inp->sctp_frag_point;
 413                 so = inp->sctp_socket;
 414                 if ((so == NULL) ||
 415                     (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
 416                         xinpcb.qlen = 0;
 417                         xinpcb.maxqlen = 0;
 418                 } else {
 419                         xinpcb.qlen = so->so_qlen;
 420                         xinpcb.maxqlen = so->so_qlimit;
 421                 }
 422                 SCTP_INP_INCR_REF(inp);
 423                 SCTP_INP_RUNLOCK(inp);
 424                 SCTP_INP_INFO_RUNLOCK();
 425                 error = SYSCTL_OUT(req, &xinpcb, sizeof(struct xsctp_inpcb));
 426                 if (error) {
 427                         SCTP_INP_DECR_REF(inp);
 428                         return error;
 429                 }
 430                 SCTP_INP_INFO_RLOCK();
 431                 SCTP_INP_RLOCK(inp);
 432                 error = copy_out_local_addresses(inp, NULL, req);
 433                 if (error) {
 434                         SCTP_INP_DECR_REF(inp);
 435                         return error;
 436                 }
 437                 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
 438                         SCTP_TCB_LOCK(stcb);
 439                         atomic_add_int(&stcb->asoc.refcnt, 1);
 440                         SCTP_TCB_UNLOCK(stcb);
 441                         xstcb.last = 0;
 442                         xstcb.local_port = ntohs(inp->sctp_lport);
 443                         xstcb.remote_port = ntohs(stcb->rport);
 444                         if (stcb->asoc.primary_destination != NULL)
 445                                 xstcb.primary_addr = stcb->asoc.primary_destination->ro._l_addr;
 446                         xstcb.heartbeat_interval = stcb->asoc.heart_beat_delay;
 447                         xstcb.state = SCTP_GET_STATE(&stcb->asoc);      /* FIXME */
 448                         /* 7.0 does not support these */
 449                         xstcb.assoc_id = sctp_get_associd(stcb);
 450                         xstcb.peers_rwnd = stcb->asoc.peers_rwnd;
 451                         xstcb.in_streams = stcb->asoc.streamincnt;
 452                         xstcb.out_streams = stcb->asoc.streamoutcnt;
 453                         xstcb.max_nr_retrans = stcb->asoc.overall_error_count;
 454                         xstcb.primary_process = 0;      /* not really supported
 455                                                          * yet */
 456                         xstcb.T1_expireries = stcb->asoc.timoinit + stcb->asoc.timocookie;
 457                         xstcb.T2_expireries = stcb->asoc.timoshutdown + stcb->asoc.timoshutdownack;
 458                         xstcb.retransmitted_tsns = stcb->asoc.marked_retrans;
 459                         xstcb.start_time.tv_sec = (uint32_t) stcb->asoc.start_time.tv_sec;
 460                         xstcb.start_time.tv_usec = (uint32_t) stcb->asoc.start_time.tv_usec;
 461                         xstcb.discontinuity_time.tv_sec = (uint32_t) stcb->asoc.discontinuity_time.tv_sec;
 462                         xstcb.discontinuity_time.tv_usec = (uint32_t) stcb->asoc.discontinuity_time.tv_usec;
 463                         xstcb.total_sends = stcb->total_sends;
 464                         xstcb.total_recvs = stcb->total_recvs;
 465                         xstcb.local_tag = stcb->asoc.my_vtag;
 466                         xstcb.remote_tag = stcb->asoc.peer_vtag;
 467                         xstcb.initial_tsn = stcb->asoc.init_seq_number;
 468                         xstcb.highest_tsn = stcb->asoc.sending_seq - 1;
 469                         xstcb.cumulative_tsn = stcb->asoc.last_acked_seq;
 470                         xstcb.cumulative_tsn_ack = stcb->asoc.cumulative_tsn;
 471                         xstcb.mtu = stcb->asoc.smallest_mtu;
 472                         xstcb.refcnt = stcb->asoc.refcnt;
 473                         SCTP_INP_RUNLOCK(inp);
 474                         SCTP_INP_INFO_RUNLOCK();
 475                         error = SYSCTL_OUT(req, &xstcb, sizeof(struct xsctp_tcb));
 476                         if (error) {
 477                                 SCTP_INP_DECR_REF(inp);
 478                                 atomic_subtract_int(&stcb->asoc.refcnt, 1);
 479                                 return error;
 480                         }
 481                         SCTP_INP_INFO_RLOCK();
 482                         SCTP_INP_RLOCK(inp);
 483                         error = copy_out_local_addresses(inp, stcb, req);
 484                         if (error) {
 485                                 SCTP_INP_DECR_REF(inp);
 486                                 atomic_subtract_int(&stcb->asoc.refcnt, 1);
 487                                 return error;
 488                         }
 489                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 490                                 xraddr.last = 0;
 491                                 xraddr.address = net->ro._l_addr;
 492                                 xraddr.active = ((net->dest_state & SCTP_ADDR_REACHABLE) == SCTP_ADDR_REACHABLE);
 493                                 xraddr.confirmed = ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0);
 494                                 xraddr.heartbeat_enabled = ((net->dest_state & SCTP_ADDR_NOHB) == 0);
 495                                 xraddr.potentially_failed = ((net->dest_state & SCTP_ADDR_PF) == SCTP_ADDR_PF);
 496                                 xraddr.rto = net->RTO;
 497                                 xraddr.max_path_rtx = net->failure_threshold;
 498                                 xraddr.rtx = net->marked_retrans;
 499                                 xraddr.error_counter = net->error_count;
 500                                 xraddr.cwnd = net->cwnd;
 501                                 xraddr.flight_size = net->flight_size;
 502                                 xraddr.mtu = net->mtu;
 503                                 xraddr.rtt = net->rtt / 1000;
 504                                 xraddr.heartbeat_interval = net->heart_beat_delay;
 505                                 xraddr.start_time.tv_sec = (uint32_t) net->start_time.tv_sec;
 506                                 xraddr.start_time.tv_usec = (uint32_t) net->start_time.tv_usec;
 507                                 SCTP_INP_RUNLOCK(inp);
 508                                 SCTP_INP_INFO_RUNLOCK();
 509                                 error = SYSCTL_OUT(req, &xraddr, sizeof(struct xsctp_raddr));
 510                                 if (error) {
 511                                         SCTP_INP_DECR_REF(inp);
 512                                         atomic_subtract_int(&stcb->asoc.refcnt, 1);
 513                                         return error;
 514                                 }
 515                                 SCTP_INP_INFO_RLOCK();
 516                                 SCTP_INP_RLOCK(inp);
 517                         }
 518                         atomic_subtract_int(&stcb->asoc.refcnt, 1);
 519                         memset((void *)&xraddr, 0, sizeof(struct xsctp_raddr));
 520                         xraddr.last = 1;
 521                         SCTP_INP_RUNLOCK(inp);
 522                         SCTP_INP_INFO_RUNLOCK();
 523                         error = SYSCTL_OUT(req, &xraddr, sizeof(struct xsctp_raddr));
 524                         if (error) {
 525                                 SCTP_INP_DECR_REF(inp);
 526                                 return error;
 527                         }
 528                         SCTP_INP_INFO_RLOCK();
 529                         SCTP_INP_RLOCK(inp);
 530                 }
 531                 SCTP_INP_DECR_REF(inp);
 532                 SCTP_INP_RUNLOCK(inp);
 533                 SCTP_INP_INFO_RUNLOCK();
 534                 memset((void *)&xstcb, 0, sizeof(struct xsctp_tcb));
 535                 xstcb.last = 1;
 536                 error = SYSCTL_OUT(req, &xstcb, sizeof(struct xsctp_tcb));
 537                 if (error) {
 538                         return error;
 539                 }
 540 skip:
 541                 SCTP_INP_INFO_RLOCK();
 542         }
 543         SCTP_INP_INFO_RUNLOCK();
 544
 545         memset((void *)&xinpcb, 0, sizeof(struct xsctp_inpcb));
 546         xinpcb.last = 1;
 547         error = SYSCTL_OUT(req, &xinpcb, sizeof(struct xsctp_inpcb));
 548         return error;
 549 }
 550
 551
 552 #define RANGECHK(var, min, max) \
 553         if ((var) < (min)) { (var) = (min); } \
 554         else if ((var) > (max)) { (var) = (max); }
 555
 556 /* XXX: Remove the #if after tunneling over IPv6 works also on FreeBSD. */
 557 #if !defined(__FreeBSD__) || defined(INET)
 558 static int
 559 sysctl_sctp_udp_tunneling_check(SYSCTL_HANDLER_ARGS)
 560 {
 561         int error;
 562         uint32_t old_sctp_udp_tunneling_port;
 563
 564         SCTP_INP_INFO_RLOCK();
 565         old_sctp_udp_tunneling_port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
 566         SCTP_INP_INFO_RUNLOCK();
 567         error = sysctl_handle_int(oidp, oidp->oid_arg1, oidp->oid_arg2, req);
 568         if (error == 0) {
 569                 RANGECHK(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port), SCTPCTL_UDP_TUNNELING_PORT_MIN, SCTPCTL_UDP_TUNNELING_PORT_MAX);
 570                 if (old_sctp_udp_tunneling_port == SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)) {
 571                         error = 0;
 572                         goto out;
 573                 }
 574                 SCTP_INP_INFO_WLOCK();
 575                 if (old_sctp_udp_tunneling_port) {
 576                         sctp_over_udp_stop();
 577                 }
 578                 if (SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)) {
 579                         if (sctp_over_udp_start()) {
 580                                 SCTP_BASE_SYSCTL(sctp_udp_tunneling_port) = 0;
 581                         }
 582                 }
 583                 SCTP_INP_INFO_WUNLOCK();
 584         }
 585 out:
 586         return (error);
 587 }
 588
 589 #endif
 590
 591
 592 static int
 593 sysctl_sctp_check(SYSCTL_HANDLER_ARGS)
 594 {
 595         int error;
 596
 597 #ifdef VIMAGE
 598         error = vnet_sysctl_handle_int(oidp, oidp->oid_arg1, oidp->oid_arg2, req);
 599 #else
 600         error = sysctl_handle_int(oidp, oidp->oid_arg1, oidp->oid_arg2, req);
 601 #endif
 602         if (error == 0) {
 603                 RANGECHK(SCTP_BASE_SYSCTL(sctp_sendspace), SCTPCTL_MAXDGRAM_MIN, SCTPCTL_MAXDGRAM_MAX);
 604                 RANGECHK(SCTP_BASE_SYSCTL(sctp_recvspace), SCTPCTL_RECVSPACE_MIN, SCTPCTL_RECVSPACE_MAX);
 605                 RANGECHK(SCTP_BASE_SYSCTL(sctp_auto_asconf), SCTPCTL_AUTOASCONF_MIN, SCTPCTL_AUTOASCONF_MAX);
 606                 RANGECHK(SCTP_BASE_SYSCTL(sctp_ecn_enable), SCTPCTL_ECN_ENABLE_MIN, SCTPCTL_ECN_ENABLE_MAX);
 607                 RANGECHK(SCTP_BASE_SYSCTL(sctp_strict_sacks), SCTPCTL_STRICT_SACKS_MIN, SCTPCTL_STRICT_SACKS_MAX);
 608 #if !defined(SCTP_WITH_NO_CSUM)
 609                 RANGECHK(SCTP_BASE_SYSCTL(sctp_no_csum_on_loopback), SCTPCTL_LOOPBACK_NOCSUM_MIN, SCTPCTL_LOOPBACK_NOCSUM_MAX);
 610 #endif
 611                 RANGECHK(SCTP_BASE_SYSCTL(sctp_strict_init), SCTPCTL_STRICT_INIT_MIN, SCTPCTL_STRICT_INIT_MAX);
 612                 RANGECHK(SCTP_BASE_SYSCTL(sctp_peer_chunk_oh), SCTPCTL_PEER_CHKOH_MIN, SCTPCTL_PEER_CHKOH_MAX);
 613                 RANGECHK(SCTP_BASE_SYSCTL(sctp_max_burst_default), SCTPCTL_MAXBURST_MIN, SCTPCTL_MAXBURST_MAX);
 614                 RANGECHK(SCTP_BASE_SYSCTL(sctp_fr_max_burst_default), SCTPCTL_FRMAXBURST_MIN, SCTPCTL_FRMAXBURST_MAX);
 615                 RANGECHK(SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue), SCTPCTL_MAXCHUNKS_MIN, SCTPCTL_MAXCHUNKS_MAX);
 616                 RANGECHK(SCTP_BASE_SYSCTL(sctp_hashtblsize), SCTPCTL_TCBHASHSIZE_MIN, SCTPCTL_TCBHASHSIZE_MAX);
 617                 RANGECHK(SCTP_BASE_SYSCTL(sctp_pcbtblsize), SCTPCTL_PCBHASHSIZE_MIN, SCTPCTL_PCBHASHSIZE_MAX);
 618                 RANGECHK(SCTP_BASE_SYSCTL(sctp_min_split_point), SCTPCTL_MIN_SPLIT_POINT_MIN, SCTPCTL_MIN_SPLIT_POINT_MAX);
 619                 RANGECHK(SCTP_BASE_SYSCTL(sctp_chunkscale), SCTPCTL_CHUNKSCALE_MIN, SCTPCTL_CHUNKSCALE_MAX);
 620                 RANGECHK(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default), SCTPCTL_DELAYED_SACK_TIME_MIN, SCTPCTL_DELAYED_SACK_TIME_MAX);
 621                 RANGECHK(SCTP_BASE_SYSCTL(sctp_sack_freq_default), SCTPCTL_SACK_FREQ_MIN, SCTPCTL_SACK_FREQ_MAX);
 622                 RANGECHK(SCTP_BASE_SYSCTL(sctp_system_free_resc_limit), SCTPCTL_SYS_RESOURCE_MIN, SCTPCTL_SYS_RESOURCE_MAX);
 623                 RANGECHK(SCTP_BASE_SYSCTL(sctp_asoc_free_resc_limit), SCTPCTL_ASOC_RESOURCE_MIN, SCTPCTL_ASOC_RESOURCE_MAX);
 624                 RANGECHK(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default), SCTPCTL_HEARTBEAT_INTERVAL_MIN, SCTPCTL_HEARTBEAT_INTERVAL_MAX);
 625                 RANGECHK(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default), SCTPCTL_PMTU_RAISE_TIME_MIN, SCTPCTL_PMTU_RAISE_TIME_MAX);
 626                 RANGECHK(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default), SCTPCTL_SHUTDOWN_GUARD_TIME_MIN, SCTPCTL_SHUTDOWN_GUARD_TIME_MAX);
 627                 RANGECHK(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default), SCTPCTL_SECRET_LIFETIME_MIN, SCTPCTL_SECRET_LIFETIME_MAX);
 628                 RANGECHK(SCTP_BASE_SYSCTL(sctp_rto_max_default), SCTPCTL_RTO_MAX_MIN, SCTPCTL_RTO_MAX_MAX);
 629                 RANGECHK(SCTP_BASE_SYSCTL(sctp_rto_min_default), SCTPCTL_RTO_MIN_MIN, SCTPCTL_RTO_MIN_MAX);
 630                 RANGECHK(SCTP_BASE_SYSCTL(sctp_rto_initial_default), SCTPCTL_RTO_INITIAL_MIN, SCTPCTL_RTO_INITIAL_MAX);
 631                 RANGECHK(SCTP_BASE_SYSCTL(sctp_init_rto_max_default), SCTPCTL_INIT_RTO_MAX_MIN, SCTPCTL_INIT_RTO_MAX_MAX);
 632                 RANGECHK(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default), SCTPCTL_VALID_COOKIE_LIFE_MIN, SCTPCTL_VALID_COOKIE_LIFE_MAX);
 633                 RANGECHK(SCTP_BASE_SYSCTL(sctp_init_rtx_max_default), SCTPCTL_INIT_RTX_MAX_MIN, SCTPCTL_INIT_RTX_MAX_MAX);
 634                 RANGECHK(SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default), SCTPCTL_ASSOC_RTX_MAX_MIN, SCTPCTL_ASSOC_RTX_MAX_MAX);
 635                 RANGECHK(SCTP_BASE_SYSCTL(sctp_path_rtx_max_default), SCTPCTL_PATH_RTX_MAX_MIN, SCTPCTL_PATH_RTX_MAX_MAX);
 636                 RANGECHK(SCTP_BASE_SYSCTL(sctp_path_pf_threshold), SCTPCTL_PATH_PF_THRESHOLD_MIN, SCTPCTL_PATH_PF_THRESHOLD_MAX);
 637                 RANGECHK(SCTP_BASE_SYSCTL(sctp_add_more_threshold), SCTPCTL_ADD_MORE_ON_OUTPUT_MIN, SCTPCTL_ADD_MORE_ON_OUTPUT_MAX);
 638                 RANGECHK(SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default), SCTPCTL_OUTGOING_STREAMS_MIN, SCTPCTL_OUTGOING_STREAMS_MAX);
 639                 RANGECHK(SCTP_BASE_SYSCTL(sctp_cmt_on_off), SCTPCTL_CMT_ON_OFF_MIN, SCTPCTL_CMT_ON_OFF_MAX);
 640                 /* EY */
 641                 RANGECHK(SCTP_BASE_SYSCTL(sctp_nr_sack_on_off), SCTPCTL_NR_SACK_ON_OFF_MIN, SCTPCTL_NR_SACK_ON_OFF_MAX);
 642                 RANGECHK(SCTP_BASE_SYSCTL(sctp_cmt_use_dac), SCTPCTL_CMT_USE_DAC_MIN, SCTPCTL_CMT_USE_DAC_MAX);
 643                 RANGECHK(SCTP_BASE_SYSCTL(sctp_use_cwnd_based_maxburst), SCTPCTL_CWND_MAXBURST_MIN, SCTPCTL_CWND_MAXBURST_MAX);
 644                 RANGECHK(SCTP_BASE_SYSCTL(sctp_asconf_auth_nochk), SCTPCTL_ASCONF_AUTH_NOCHK_MIN, SCTPCTL_ASCONF_AUTH_NOCHK_MAX);
 645                 RANGECHK(SCTP_BASE_SYSCTL(sctp_auth_disable), SCTPCTL_AUTH_DISABLE_MIN, SCTPCTL_AUTH_DISABLE_MAX);
 646                 RANGECHK(SCTP_BASE_SYSCTL(sctp_nat_friendly), SCTPCTL_NAT_FRIENDLY_MIN, SCTPCTL_NAT_FRIENDLY_MAX);
 647                 RANGECHK(SCTP_BASE_SYSCTL(sctp_L2_abc_variable), SCTPCTL_ABC_L_VAR_MIN, SCTPCTL_ABC_L_VAR_MAX);
 648                 RANGECHK(SCTP_BASE_SYSCTL(sctp_mbuf_threshold_count), SCTPCTL_MAX_CHAINED_MBUFS_MIN, SCTPCTL_MAX_CHAINED_MBUFS_MAX);
 649                 RANGECHK(SCTP_BASE_SYSCTL(sctp_do_drain), SCTPCTL_DO_SCTP_DRAIN_MIN, SCTPCTL_DO_SCTP_DRAIN_MAX);
 650                 RANGECHK(SCTP_BASE_SYSCTL(sctp_hb_maxburst), SCTPCTL_HB_MAX_BURST_MIN, SCTPCTL_HB_MAX_BURST_MAX);
 651                 RANGECHK(SCTP_BASE_SYSCTL(sctp_abort_if_one_2_one_hits_limit), SCTPCTL_ABORT_AT_LIMIT_MIN, SCTPCTL_ABORT_AT_LIMIT_MAX);
 652                 RANGECHK(SCTP_BASE_SYSCTL(sctp_strict_data_order), SCTPCTL_STRICT_DATA_ORDER_MIN, SCTPCTL_STRICT_DATA_ORDER_MAX);
 653                 RANGECHK(SCTP_BASE_SYSCTL(sctp_min_residual), SCTPCTL_MIN_RESIDUAL_MIN, SCTPCTL_MIN_RESIDUAL_MAX);
 654                 RANGECHK(SCTP_BASE_SYSCTL(sctp_max_retran_chunk), SCTPCTL_MAX_RETRAN_CHUNK_MIN, SCTPCTL_MAX_RETRAN_CHUNK_MAX);
 655                 RANGECHK(SCTP_BASE_SYSCTL(sctp_logging_level), SCTPCTL_LOGGING_LEVEL_MIN, SCTPCTL_LOGGING_LEVEL_MAX);
 656                 RANGECHK(SCTP_BASE_SYSCTL(sctp_default_cc_module), SCTPCTL_DEFAULT_CC_MODULE_MIN, SCTPCTL_DEFAULT_CC_MODULE_MAX);
 657                 RANGECHK(SCTP_BASE_SYSCTL(sctp_default_ss_module), SCTPCTL_DEFAULT_SS_MODULE_MIN, SCTPCTL_DEFAULT_SS_MODULE_MAX);
 658                 RANGECHK(SCTP_BASE_SYSCTL(sctp_default_frag_interleave), SCTPCTL_DEFAULT_FRAG_INTERLEAVE_MIN, SCTPCTL_DEFAULT_FRAG_INTERLEAVE_MAX);
 659                 RANGECHK(SCTP_BASE_SYSCTL(sctp_vtag_time_wait), SCTPCTL_TIME_WAIT_MIN, SCTPCTL_TIME_WAIT_MAX);
 660                 RANGECHK(SCTP_BASE_SYSCTL(sctp_buffer_splitting), SCTPCTL_BUFFER_SPLITTING_MIN, SCTPCTL_BUFFER_SPLITTING_MAX);
 661                 RANGECHK(SCTP_BASE_SYSCTL(sctp_initial_cwnd), SCTPCTL_INITIAL_CWND_MIN, SCTPCTL_INITIAL_CWND_MAX);
 662                 RANGECHK(SCTP_BASE_SYSCTL(sctp_rttvar_bw), SCTPCTL_RTTVAR_BW_MIN, SCTPCTL_RTTVAR_BW_MAX);
 663                 RANGECHK(SCTP_BASE_SYSCTL(sctp_rttvar_rtt), SCTPCTL_RTTVAR_RTT_MIN, SCTPCTL_RTTVAR_RTT_MAX);
 664                 RANGECHK(SCTP_BASE_SYSCTL(sctp_rttvar_eqret), SCTPCTL_RTTVAR_EQRET_MIN, SCTPCTL_RTTVAR_EQRET_MAX);
 665                 RANGECHK(SCTP_BASE_SYSCTL(sctp_steady_step), SCTPCTL_RTTVAR_STEADYS_MIN, SCTPCTL_RTTVAR_STEADYS_MAX);
 666                 RANGECHK(SCTP_BASE_SYSCTL(sctp_use_dccc_ecn), SCTPCTL_RTTVAR_DCCCECN_MIN, SCTPCTL_RTTVAR_DCCCECN_MAX);
 667                 RANGECHK(SCTP_BASE_SYSCTL(sctp_mobility_base), SCTPCTL_MOBILITY_BASE_MIN, SCTPCTL_MOBILITY_BASE_MAX);
 668                 RANGECHK(SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff), SCTPCTL_MOBILITY_FASTHANDOFF_MIN, SCTPCTL_MOBILITY_FASTHANDOFF_MAX);
 669 /* XXX: Remove the #if after tunneling over IPv6 works also on FreeBSD. */
 670 #if !defined(__FreeBSD__) || defined(INET)
 671                 RANGECHK(SCTP_BASE_SYSCTL(sctp_udp_tunneling_for_client_enable), SCTPCTL_UDP_TUNNELING_FOR_CLIENT_ENABLE_MIN, SCTPCTL_UDP_TUNNELING_FOR_CLIENT_ENABLE_MAX);
 672 #endif
 673                 RANGECHK(SCTP_BASE_SYSCTL(sctp_enable_sack_immediately), SCTPCTL_SACK_IMMEDIATELY_ENABLE_MIN, SCTPCTL_SACK_IMMEDIATELY_ENABLE_MAX);
 674                 RANGECHK(SCTP_BASE_SYSCTL(sctp_inits_include_nat_friendly), SCTPCTL_NAT_FRIENDLY_INITS_MIN, SCTPCTL_NAT_FRIENDLY_INITS_MAX);
 675
 676 #ifdef SCTP_DEBUG
 677                 RANGECHK(SCTP_BASE_SYSCTL(sctp_debug_on), SCTPCTL_DEBUG_MIN, SCTPCTL_DEBUG_MAX);
 678 #endif
 679 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
 680                 RANGECHK(SCTP_BASE_SYSCTL(sctp_output_unlocked), SCTPCTL_OUTPUT_UNLOCKED_MIN, SCTPCTL_OUTPUT_UNLOCKED_MAX);
 681 #endif
 682         }
 683         return (error);
 684 }
 685
 686 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
 687 static int
 688 sysctl_stat_get(SYSCTL_HANDLER_ARGS)
 689 {
 690         int cpu, error;
 691         struct sctpstat sb, *sarry, *cpin = NULL;
 692
 693         if ((req->newptr) && (req->newlen == sizeof(struct sctpstat))) {
 694                 /*
 695                  * User wants us to clear or at least reset the counters to
 696                  * the specified values.
 697                  */
 698                 cpin = (struct sctpstat *)req->newptr;
 699         } else if (req->newptr) {
 700                 /* Must be a stat structure */
 701                 return (EINVAL);
 702         }
 703         memset(&sb, 0, sizeof(sb));
 704         for (cpu = 0; cpu < mp_maxid; cpu++) {
 705                 sarry = &SCTP_BASE_STATS[cpu];
 706                 if (sarry->sctps_discontinuitytime.tv_sec > sb.sctps_discontinuitytime.tv_sec) {
 707                         sb.sctps_discontinuitytime.tv_sec = sarry->sctps_discontinuitytime.tv_sec;
 708                         sb.sctps_discontinuitytime.tv_usec = sarry->sctps_discontinuitytime.tv_usec;
 709                 }
 710                 sb.sctps_currestab += sarry->sctps_currestab;
 711                 sb.sctps_activeestab += sarry->sctps_activeestab;
 712                 sb.sctps_restartestab += sarry->sctps_restartestab;
 713                 sb.sctps_collisionestab += sarry->sctps_collisionestab;
 714                 sb.sctps_passiveestab += sarry->sctps_passiveestab;
 715                 sb.sctps_aborted += sarry->sctps_aborted;
 716                 sb.sctps_shutdown += sarry->sctps_shutdown;
 717                 sb.sctps_outoftheblue += sarry->sctps_outoftheblue;
 718                 sb.sctps_checksumerrors += sarry->sctps_checksumerrors;
 719                 sb.sctps_outcontrolchunks += sarry->sctps_outcontrolchunks;
 720                 sb.sctps_outorderchunks += sarry->sctps_outorderchunks;
 721                 sb.sctps_outunorderchunks += sarry->sctps_outunorderchunks;
 722                 sb.sctps_incontrolchunks += sarry->sctps_incontrolchunks;
 723                 sb.sctps_inorderchunks += sarry->sctps_inorderchunks;
 724                 sb.sctps_inunorderchunks += sarry->sctps_inunorderchunks;
 725                 sb.sctps_fragusrmsgs += sarry->sctps_fragusrmsgs;
 726                 sb.sctps_reasmusrmsgs += sarry->sctps_reasmusrmsgs;
 727                 sb.sctps_outpackets += sarry->sctps_outpackets;
 728                 sb.sctps_inpackets += sarry->sctps_inpackets;
 729                 sb.sctps_recvpackets += sarry->sctps_recvpackets;
 730                 sb.sctps_recvdatagrams += sarry->sctps_recvdatagrams;
 731                 sb.sctps_recvpktwithdata += sarry->sctps_recvpktwithdata;
 732                 sb.sctps_recvsacks += sarry->sctps_recvsacks;
 733                 sb.sctps_recvdata += sarry->sctps_recvdata;
 734                 sb.sctps_recvdupdata += sarry->sctps_recvdupdata;
 735                 sb.sctps_recvheartbeat += sarry->sctps_recvheartbeat;
 736                 sb.sctps_recvheartbeatack += sarry->sctps_recvheartbeatack;
 737                 sb.sctps_recvecne += sarry->sctps_recvecne;
 738                 sb.sctps_recvauth += sarry->sctps_recvauth;
 739                 sb.sctps_recvauthmissing += sarry->sctps_recvauthmissing;
 740                 sb.sctps_recvivalhmacid += sarry->sctps_recvivalhmacid;
 741                 sb.sctps_recvivalkeyid += sarry->sctps_recvivalkeyid;
 742                 sb.sctps_recvauthfailed += sarry->sctps_recvauthfailed;
 743                 sb.sctps_recvexpress += sarry->sctps_recvexpress;
 744                 sb.sctps_recvexpressm += sarry->sctps_recvexpressm;
 745                 sb.sctps_recvnocrc += sarry->sctps_recvnocrc;
 746                 sb.sctps_recvswcrc += sarry->sctps_recvswcrc;
 747                 sb.sctps_recvhwcrc += sarry->sctps_recvhwcrc;
 748                 sb.sctps_sendpackets += sarry->sctps_sendpackets;
 749                 sb.sctps_sendsacks += sarry->sctps_sendsacks;
 750                 sb.sctps_senddata += sarry->sctps_senddata;
 751                 sb.sctps_sendretransdata += sarry->sctps_sendretransdata;
 752                 sb.sctps_sendfastretrans += sarry->sctps_sendfastretrans;
 753                 sb.sctps_sendmultfastretrans += sarry->sctps_sendmultfastretrans;
 754                 sb.sctps_sendheartbeat += sarry->sctps_sendheartbeat;
 755                 sb.sctps_sendecne += sarry->sctps_sendecne;
 756                 sb.sctps_sendauth += sarry->sctps_sendauth;
 757                 sb.sctps_senderrors += sarry->sctps_senderrors;
 758                 sb.sctps_sendnocrc += sarry->sctps_sendnocrc;
 759                 sb.sctps_sendswcrc += sarry->sctps_sendswcrc;
 760                 sb.sctps_sendhwcrc += sarry->sctps_sendhwcrc;
 761                 sb.sctps_pdrpfmbox += sarry->sctps_pdrpfmbox;
 762                 sb.sctps_pdrpfehos += sarry->sctps_pdrpfehos;
 763                 sb.sctps_pdrpmbda += sarry->sctps_pdrpmbda;
 764                 sb.sctps_pdrpmbct += sarry->sctps_pdrpmbct;
 765                 sb.sctps_pdrpbwrpt += sarry->sctps_pdrpbwrpt;
 766                 sb.sctps_pdrpcrupt += sarry->sctps_pdrpcrupt;
 767                 sb.sctps_pdrpnedat += sarry->sctps_pdrpnedat;
 768                 sb.sctps_pdrppdbrk += sarry->sctps_pdrppdbrk;
 769                 sb.sctps_pdrptsnnf += sarry->sctps_pdrptsnnf;
 770                 sb.sctps_pdrpdnfnd += sarry->sctps_pdrpdnfnd;
 771                 sb.sctps_pdrpdiwnp += sarry->sctps_pdrpdiwnp;
 772                 sb.sctps_pdrpdizrw += sarry->sctps_pdrpdizrw;
 773                 sb.sctps_pdrpbadd += sarry->sctps_pdrpbadd;
 774                 sb.sctps_pdrpmark += sarry->sctps_pdrpmark;
 775                 sb.sctps_timoiterator += sarry->sctps_timoiterator;
 776                 sb.sctps_timodata += sarry->sctps_timodata;
 777                 sb.sctps_timowindowprobe += sarry->sctps_timowindowprobe;
 778                 sb.sctps_timoinit += sarry->sctps_timoinit;
 779                 sb.sctps_timosack += sarry->sctps_timosack;
 780                 sb.sctps_timoshutdown += sarry->sctps_timoshutdown;
 781                 sb.sctps_timoheartbeat += sarry->sctps_timoheartbeat;
 782                 sb.sctps_timocookie += sarry->sctps_timocookie;
 783                 sb.sctps_timosecret += sarry->sctps_timosecret;
 784                 sb.sctps_timopathmtu += sarry->sctps_timopathmtu;
 785                 sb.sctps_timoshutdownack += sarry->sctps_timoshutdownack;
 786                 sb.sctps_timoshutdownguard += sarry->sctps_timoshutdownguard;
 787                 sb.sctps_timostrmrst += sarry->sctps_timostrmrst;
 788                 sb.sctps_timoearlyfr += sarry->sctps_timoearlyfr;
 789                 sb.sctps_timoasconf += sarry->sctps_timoasconf;
 790                 sb.sctps_timodelprim += sarry->sctps_timodelprim;
 791                 sb.sctps_timoautoclose += sarry->sctps_timoautoclose;
 792                 sb.sctps_timoassockill += sarry->sctps_timoassockill;
 793                 sb.sctps_timoinpkill += sarry->sctps_timoinpkill;
 794                 sb.sctps_hdrops += sarry->sctps_hdrops;
 795                 sb.sctps_badsum += sarry->sctps_badsum;
 796                 sb.sctps_noport += sarry->sctps_noport;
 797                 sb.sctps_badvtag += sarry->sctps_badvtag;
 798                 sb.sctps_badsid += sarry->sctps_badsid;
 799                 sb.sctps_nomem += sarry->sctps_nomem;
 800                 sb.sctps_fastretransinrtt += sarry->sctps_fastretransinrtt;
 801                 sb.sctps_markedretrans += sarry->sctps_markedretrans;
 802                 sb.sctps_naglesent += sarry->sctps_naglesent;
 803                 sb.sctps_naglequeued += sarry->sctps_naglequeued;
 804                 sb.sctps_maxburstqueued += sarry->sctps_maxburstqueued;
 805                 sb.sctps_ifnomemqueued += sarry->sctps_ifnomemqueued;
 806                 sb.sctps_windowprobed += sarry->sctps_windowprobed;
 807                 sb.sctps_lowlevelerr += sarry->sctps_lowlevelerr;
 808                 sb.sctps_lowlevelerrusr += sarry->sctps_lowlevelerrusr;
 809                 sb.sctps_datadropchklmt += sarry->sctps_datadropchklmt;
 810                 sb.sctps_datadroprwnd += sarry->sctps_datadroprwnd;
 811                 sb.sctps_ecnereducedcwnd += sarry->sctps_ecnereducedcwnd;
 812                 sb.sctps_vtagexpress += sarry->sctps_vtagexpress;
 813                 sb.sctps_vtagbogus += sarry->sctps_vtagbogus;
 814                 sb.sctps_primary_randry += sarry->sctps_primary_randry;
 815                 sb.sctps_cmt_randry += sarry->sctps_cmt_randry;
 816                 sb.sctps_slowpath_sack += sarry->sctps_slowpath_sack;
 817                 sb.sctps_wu_sacks_sent += sarry->sctps_wu_sacks_sent;
 818                 sb.sctps_sends_with_flags += sarry->sctps_sends_with_flags;
 819                 sb.sctps_sends_with_unord += sarry->sctps_sends_with_unord;
 820                 sb.sctps_sends_with_eof += sarry->sctps_sends_with_eof;
 821                 sb.sctps_sends_with_abort += sarry->sctps_sends_with_abort;
 822                 sb.sctps_protocol_drain_calls += sarry->sctps_protocol_drain_calls;
 823                 sb.sctps_protocol_drains_done += sarry->sctps_protocol_drains_done;
 824                 sb.sctps_read_peeks += sarry->sctps_read_peeks;
 825                 sb.sctps_cached_chk += sarry->sctps_cached_chk;
 826                 sb.sctps_cached_strmoq += sarry->sctps_cached_strmoq;
 827                 sb.sctps_left_abandon += sarry->sctps_left_abandon;
 828                 sb.sctps_send_burst_avoid += sarry->sctps_send_burst_avoid;
 829                 sb.sctps_send_cwnd_avoid += sarry->sctps_send_cwnd_avoid;
 830                 sb.sctps_fwdtsn_map_over += sarry->sctps_fwdtsn_map_over;
 831                 if (cpin) {
 832                         memcpy(sarry, cpin, sizeof(struct sctpstat));
 833                 }
 834         }
 835         error = SYSCTL_OUT(req, &sb, sizeof(sb));
 836         return (error);
 837 }
 838
 839 #endif
 840
 841 #if defined(SCTP_LOCAL_TRACE_BUF)
 842 static int
 843 sysctl_sctp_cleartrace(SYSCTL_HANDLER_ARGS)
 844 {
 845         int error = 0;
 846
 847         memset(&SCTP_BASE_SYSCTL(sctp_log), 0, sizeof(struct sctp_log));
 848         return (error);
 849 }
 850
 851 #endif
 852
 853
 854 /*
 855  * sysctl definitions
 856  */
 857
 858 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, sendspace, CTLTYPE_UINT | CTLFLAG_RW,
 859     &SCTP_BASE_SYSCTL(sctp_sendspace), 0, sysctl_sctp_check, "IU",
 860     SCTPCTL_MAXDGRAM_DESC);
 861
 862 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, recvspace, CTLTYPE_UINT | CTLFLAG_RW,
 863     &SCTP_BASE_SYSCTL(sctp_recvspace), 0, sysctl_sctp_check, "IU",
 864     SCTPCTL_RECVSPACE_DESC);
 865
 866 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, auto_asconf, CTLTYPE_UINT | CTLFLAG_RW,
 867     &SCTP_BASE_SYSCTL(sctp_auto_asconf), 0, sysctl_sctp_check, "IU",
 868     SCTPCTL_AUTOASCONF_DESC);
 869
 870 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, ecn_enable, CTLTYPE_UINT | CTLFLAG_RW,
 871     &SCTP_BASE_SYSCTL(sctp_ecn_enable), 0, sysctl_sctp_check, "IU",
 872     SCTPCTL_ECN_ENABLE_DESC);
 873
 874 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, strict_sacks, CTLTYPE_UINT | CTLFLAG_RW,
 875     &SCTP_BASE_SYSCTL(sctp_strict_sacks), 0, sysctl_sctp_check, "IU",
 876     SCTPCTL_STRICT_SACKS_DESC);
 877
 878 #if !defined(SCTP_WITH_NO_CSUM)
 879 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, loopback_nocsum, CTLTYPE_UINT | CTLFLAG_RW,
 880     &SCTP_BASE_SYSCTL(sctp_no_csum_on_loopback), 0, sysctl_sctp_check, "IU",
 881     SCTPCTL_LOOPBACK_NOCSUM_DESC);
 882 #endif
 883
 884 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, strict_init, CTLTYPE_UINT | CTLFLAG_RW,
 885     &SCTP_BASE_SYSCTL(sctp_strict_init), 0, sysctl_sctp_check, "IU",
 886     SCTPCTL_STRICT_INIT_DESC);
 887
 888 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, peer_chkoh, CTLTYPE_UINT | CTLFLAG_RW,
 889     &SCTP_BASE_SYSCTL(sctp_peer_chunk_oh), 0, sysctl_sctp_check, "IU",
 890     SCTPCTL_PEER_CHKOH_DESC);
 891
 892 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, maxburst, CTLTYPE_UINT | CTLFLAG_RW,
 893     &SCTP_BASE_SYSCTL(sctp_max_burst_default), 0, sysctl_sctp_check, "IU",
 894     SCTPCTL_MAXBURST_DESC);
 895
 896 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, fr_maxburst, CTLTYPE_UINT | CTLFLAG_RW,
 897     &SCTP_BASE_SYSCTL(sctp_fr_max_burst_default), 0, sysctl_sctp_check, "IU",
 898     SCTPCTL_FRMAXBURST_DESC);
 899
 900 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, maxchunks, CTLTYPE_UINT | CTLFLAG_RW,
 901     &SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue), 0, sysctl_sctp_check, "IU",
 902     SCTPCTL_MAXCHUNKS_DESC);
 903
 904 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, tcbhashsize, CTLTYPE_UINT | CTLFLAG_RW,
 905     &SCTP_BASE_SYSCTL(sctp_hashtblsize), 0, sysctl_sctp_check, "IU",
 906     SCTPCTL_TCBHASHSIZE_DESC);
 907
 908 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, pcbhashsize, CTLTYPE_UINT | CTLFLAG_RW,
 909     &SCTP_BASE_SYSCTL(sctp_pcbtblsize), 0, sysctl_sctp_check, "IU",
 910     SCTPCTL_PCBHASHSIZE_DESC);
 911
 912 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, min_split_point, CTLTYPE_UINT | CTLFLAG_RW,
 913     &SCTP_BASE_SYSCTL(sctp_min_split_point), 0, sysctl_sctp_check, "IU",
 914     SCTPCTL_MIN_SPLIT_POINT_DESC);
 915
 916 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, chunkscale, CTLTYPE_UINT | CTLFLAG_RW,
 917     &SCTP_BASE_SYSCTL(sctp_chunkscale), 0, sysctl_sctp_check, "IU",
 918     SCTPCTL_CHUNKSCALE_DESC);
 919
 920 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, delayed_sack_time, CTLTYPE_UINT | CTLFLAG_RW,
 921     &SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default), 0, sysctl_sctp_check, "IU",
 922     SCTPCTL_DELAYED_SACK_TIME_DESC);
 923
 924 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, sack_freq, CTLTYPE_UINT | CTLFLAG_RW,
 925     &SCTP_BASE_SYSCTL(sctp_sack_freq_default), 0, sysctl_sctp_check, "IU",
 926     SCTPCTL_SACK_FREQ_DESC);
 927
 928 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, sys_resource, CTLTYPE_UINT | CTLFLAG_RW,
 929     &SCTP_BASE_SYSCTL(sctp_system_free_resc_limit), 0, sysctl_sctp_check, "IU",
 930     SCTPCTL_SYS_RESOURCE_DESC);
 931
 932 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, asoc_resource, CTLTYPE_UINT | CTLFLAG_RW,
 933     &SCTP_BASE_SYSCTL(sctp_asoc_free_resc_limit), 0, sysctl_sctp_check, "IU",
 934     SCTPCTL_ASOC_RESOURCE_DESC);
 935
 936 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, heartbeat_interval, CTLTYPE_UINT | CTLFLAG_RW,
 937     &SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default), 0, sysctl_sctp_check, "IU",
 938     SCTPCTL_HEARTBEAT_INTERVAL_DESC);
 939
 940 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, pmtu_raise_time, CTLTYPE_UINT | CTLFLAG_RW,
 941     &SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default), 0, sysctl_sctp_check, "IU",
 942     SCTPCTL_PMTU_RAISE_TIME_DESC);
 943
 944 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, shutdown_guard_time, CTLTYPE_UINT | CTLFLAG_RW,
 945     &SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default), 0, sysctl_sctp_check, "IU",
 946     SCTPCTL_SHUTDOWN_GUARD_TIME_DESC);
 947
 948 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, secret_lifetime, CTLTYPE_UINT | CTLFLAG_RW,
 949     &SCTP_BASE_SYSCTL(sctp_secret_lifetime_default), 0, sysctl_sctp_check, "IU",
 950     SCTPCTL_SECRET_LIFETIME_DESC);
 951
 952 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, rto_max, CTLTYPE_UINT | CTLFLAG_RW,
 953     &SCTP_BASE_SYSCTL(sctp_rto_max_default), 0, sysctl_sctp_check, "IU",
 954     SCTPCTL_RTO_MAX_DESC);
 955
 956 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, rto_min, CTLTYPE_UINT | CTLFLAG_RW,
 957     &SCTP_BASE_SYSCTL(sctp_rto_min_default), 0, sysctl_sctp_check, "IU",
 958     SCTPCTL_RTO_MIN_DESC);
 959
 960 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, rto_initial, CTLTYPE_UINT | CTLFLAG_RW,
 961     &SCTP_BASE_SYSCTL(sctp_rto_initial_default), 0, sysctl_sctp_check, "IU",
 962     SCTPCTL_RTO_INITIAL_DESC);
 963
 964 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, init_rto_max, CTLTYPE_UINT | CTLFLAG_RW,
 965     &SCTP_BASE_SYSCTL(sctp_init_rto_max_default), 0, sysctl_sctp_check, "IU",
 966     SCTPCTL_INIT_RTO_MAX_DESC);
 967
 968 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, valid_cookie_life, CTLTYPE_UINT | CTLFLAG_RW,
 969     &SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default), 0, sysctl_sctp_check, "IU",
 970     SCTPCTL_VALID_COOKIE_LIFE_DESC);
 971
 972 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, init_rtx_max, CTLTYPE_UINT | CTLFLAG_RW,
 973     &SCTP_BASE_SYSCTL(sctp_init_rtx_max_default), 0, sysctl_sctp_check, "IU",
 974     SCTPCTL_INIT_RTX_MAX_DESC);
 975
 976 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, assoc_rtx_max, CTLTYPE_UINT | CTLFLAG_RW,
 977     &SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default), 0, sysctl_sctp_check, "IU",
 978     SCTPCTL_ASSOC_RTX_MAX_DESC);
 979
 980 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, path_rtx_max, CTLTYPE_UINT | CTLFLAG_RW,
 981     &SCTP_BASE_SYSCTL(sctp_path_rtx_max_default), 0, sysctl_sctp_check, "IU",
 982     SCTPCTL_PATH_RTX_MAX_DESC);
 983
 984 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, path_pf_threshold, CTLTYPE_UINT | CTLFLAG_RW,
 985     &SCTP_BASE_SYSCTL(sctp_path_pf_threshold), 0, sysctl_sctp_check, "IU",
 986     SCTPCTL_PATH_PF_THRESHOLD_DESC);
 987
 988 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, add_more_on_output, CTLTYPE_UINT | CTLFLAG_RW,
 989     &SCTP_BASE_SYSCTL(sctp_add_more_threshold), 0, sysctl_sctp_check, "IU",
 990     SCTPCTL_ADD_MORE_ON_OUTPUT_DESC);
 991
 992 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, outgoing_streams, CTLTYPE_UINT | CTLFLAG_RW,
 993     &SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default), 0, sysctl_sctp_check, "IU",
 994     SCTPCTL_OUTGOING_STREAMS_DESC);
 995
 996 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, cmt_on_off, CTLTYPE_UINT | CTLFLAG_RW,
 997     &SCTP_BASE_SYSCTL(sctp_cmt_on_off), 0, sysctl_sctp_check, "IU",
 998     SCTPCTL_CMT_ON_OFF_DESC);
 999
1000 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, nr_sack_on_off, CTLTYPE_UINT | CTLFLAG_RW,
1001     &SCTP_BASE_SYSCTL(sctp_nr_sack_on_off), 0, sysctl_sctp_check, "IU",
1002     SCTPCTL_NR_SACK_ON_OFF_DESC);
1003
1004 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, cmt_use_dac, CTLTYPE_UINT | CTLFLAG_RW,
1005     &SCTP_BASE_SYSCTL(sctp_cmt_use_dac), 0, sysctl_sctp_check, "IU",
1006     SCTPCTL_CMT_USE_DAC_DESC);
1007
1008 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, cwnd_maxburst, CTLTYPE_UINT | CTLFLAG_RW,
1009     &SCTP_BASE_SYSCTL(sctp_use_cwnd_based_maxburst), 0, sysctl_sctp_check, "IU",
1010     SCTPCTL_CWND_MAXBURST_DESC);
1011
1012 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, asconf_auth_nochk, CTLTYPE_UINT | CTLFLAG_RW,
1013     &SCTP_BASE_SYSCTL(sctp_asconf_auth_nochk), 0, sysctl_sctp_check, "IU",
1014     SCTPCTL_ASCONF_AUTH_NOCHK_DESC);
1015
1016 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, auth_disable, CTLTYPE_UINT | CTLFLAG_RW,
1017     &SCTP_BASE_SYSCTL(sctp_auth_disable), 0, sysctl_sctp_check, "IU",
1018     SCTPCTL_AUTH_DISABLE_DESC);
1019
1020 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, nat_friendly, CTLTYPE_UINT | CTLFLAG_RW,
1021     &SCTP_BASE_SYSCTL(sctp_nat_friendly), 0, sysctl_sctp_check, "IU",
1022     SCTPCTL_NAT_FRIENDLY_DESC);
1023
1024 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, abc_l_var, CTLTYPE_UINT | CTLFLAG_RW,
1025     &SCTP_BASE_SYSCTL(sctp_L2_abc_variable), 0, sysctl_sctp_check, "IU",
1026     SCTPCTL_ABC_L_VAR_DESC);
1027
1028 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, max_chained_mbufs, CTLTYPE_UINT | CTLFLAG_RW,
1029     &SCTP_BASE_SYSCTL(sctp_mbuf_threshold_count), 0, sysctl_sctp_check, "IU",
1030     SCTPCTL_MAX_CHAINED_MBUFS_DESC);
1031
1032 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, do_sctp_drain, CTLTYPE_UINT | CTLFLAG_RW,
1033     &SCTP_BASE_SYSCTL(sctp_do_drain), 0, sysctl_sctp_check, "IU",
1034     SCTPCTL_DO_SCTP_DRAIN_DESC);
1035
1036 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, hb_max_burst, CTLTYPE_UINT | CTLFLAG_RW,
1037     &SCTP_BASE_SYSCTL(sctp_hb_maxburst), 0, sysctl_sctp_check, "IU",
1038     SCTPCTL_HB_MAX_BURST_DESC);
1039
1040 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, abort_at_limit, CTLTYPE_UINT | CTLFLAG_RW,
1041     &SCTP_BASE_SYSCTL(sctp_abort_if_one_2_one_hits_limit), 0, sysctl_sctp_check, "IU",
1042     SCTPCTL_ABORT_AT_LIMIT_DESC);
1043
1044 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, strict_data_order, CTLTYPE_UINT | CTLFLAG_RW,
1045     &SCTP_BASE_SYSCTL(sctp_strict_data_order), 0, sysctl_sctp_check, "IU",
1046     SCTPCTL_STRICT_DATA_ORDER_DESC);
1047
1048 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, min_residual, CTLTYPE_UINT | CTLFLAG_RW,
1049     &SCTP_BASE_SYSCTL(sctp_min_residual), 0, sysctl_sctp_check, "IU",
1050     SCTPCTL_MIN_RESIDUAL_DESC);
1051
1052 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, max_retran_chunk, CTLTYPE_UINT | CTLFLAG_RW,
1053     &SCTP_BASE_SYSCTL(sctp_max_retran_chunk), 0, sysctl_sctp_check, "IU",
1054     SCTPCTL_MAX_RETRAN_CHUNK_DESC);
1055
1056 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, log_level, CTLTYPE_UINT | CTLFLAG_RW,
1057     &SCTP_BASE_SYSCTL(sctp_logging_level), 0, sysctl_sctp_check, "IU",
1058     SCTPCTL_LOGGING_LEVEL_DESC);
1059
1060 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, default_cc_module, CTLTYPE_UINT | CTLFLAG_RW,
1061     &SCTP_BASE_SYSCTL(sctp_default_cc_module), 0, sysctl_sctp_check, "IU",
1062     SCTPCTL_DEFAULT_CC_MODULE_DESC);
1063
1064 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, default_ss_module, CTLTYPE_UINT | CTLFLAG_RW,
1065     &SCTP_BASE_SYSCTL(sctp_default_ss_module), 0, sysctl_sctp_check, "IU",
1066     SCTPCTL_DEFAULT_SS_MODULE_DESC);
1067
1068 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, default_frag_interleave, CTLTYPE_UINT | CTLFLAG_RW,
1069     &SCTP_BASE_SYSCTL(sctp_default_frag_interleave), 0, sysctl_sctp_check, "IU",
1070     SCTPCTL_DEFAULT_FRAG_INTERLEAVE_DESC);
1071
1072 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, mobility_base, CTLTYPE_UINT | CTLFLAG_RW,
1073     &SCTP_BASE_SYSCTL(sctp_mobility_base), 0, sysctl_sctp_check, "IU",
1074     SCTPCTL_MOBILITY_BASE_DESC);
1075
1076 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, mobility_fasthandoff, CTLTYPE_UINT | CTLFLAG_RW,
1077     &SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff), 0, sysctl_sctp_check, "IU",
1078     SCTPCTL_MOBILITY_FASTHANDOFF_DESC);
1079
1080 #if defined(SCTP_LOCAL_TRACE_BUF)
1081 SYSCTL_VNET_STRUCT(_net_inet_sctp, OID_AUTO, log, CTLFLAG_RD,
1082     &SCTP_BASE_SYSCTL(sctp_log), sctp_log,
1083     "SCTP logging (struct sctp_log)");
1084
1085 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, clear_trace, CTLTYPE_UINT | CTLFLAG_RW,
1086     &SCTP_BASE_SYSCTL(sctp_log), 0, sysctl_sctp_cleartrace, "IU",
1087     "Clear SCTP Logging buffer");
1088 #endif
1089
1090 /* XXX: Remove the #if after tunneling over IPv6 works also on FreeBSD. */
1091 #if !defined(__FreeBSD__) || defined(INET)
1092 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, udp_tunneling_for_client_enable, CTLTYPE_UINT | CTLFLAG_RW,
1093     &SCTP_BASE_SYSCTL(sctp_udp_tunneling_for_client_enable), 0, sysctl_sctp_check, "IU",
1094     SCTPCTL_UDP_TUNNELING_FOR_CLIENT_ENABLE_DESC);
1095
1096 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, udp_tunneling_port, CTLTYPE_UINT | CTLFLAG_RW,
1097     &SCTP_BASE_SYSCTL(sctp_udp_tunneling_port), 0, sysctl_sctp_udp_tunneling_check, "IU",
1098     SCTPCTL_UDP_TUNNELING_PORT_DESC);
1099 #endif
1100
1101 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, enable_sack_immediately, CTLTYPE_UINT | CTLFLAG_RW,
1102     &SCTP_BASE_SYSCTL(sctp_enable_sack_immediately), 0, sysctl_sctp_check, "IU",
1103     SCTPCTL_SACK_IMMEDIATELY_ENABLE_DESC);
1104
1105 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, nat_friendly_init, CTLTYPE_UINT | CTLFLAG_RW,
1106     &SCTP_BASE_SYSCTL(sctp_inits_include_nat_friendly), 0, sysctl_sctp_check, "IU",
1107     SCTPCTL_NAT_FRIENDLY_INITS_DESC);
1108
1109 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, vtag_time_wait, CTLTYPE_UINT | CTLFLAG_RW,
1110     &SCTP_BASE_SYSCTL(sctp_vtag_time_wait), 0, sysctl_sctp_check, "IU",
1111     SCTPCTL_TIME_WAIT_DESC);
1112
1113 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, buffer_splitting, CTLTYPE_UINT | CTLFLAG_RW,
1114     &SCTP_BASE_SYSCTL(sctp_buffer_splitting), 0, sysctl_sctp_check, "IU",
1115     SCTPCTL_BUFFER_SPLITTING_DESC);
1116
1117 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, initial_cwnd, CTLTYPE_UINT | CTLFLAG_RW,
1118     &SCTP_BASE_SYSCTL(sctp_initial_cwnd), 0, sysctl_sctp_check, "IU",
1119     SCTPCTL_INITIAL_CWND_DESC);
1120
1121 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, rttvar_bw, CTLTYPE_UINT | CTLFLAG_RW,
1122     &SCTP_BASE_SYSCTL(sctp_rttvar_bw), 0, sysctl_sctp_check, "IU",
1123     SCTPCTL_RTTVAR_BW_DESC);
1124
1125 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, rttvar_rtt, CTLTYPE_UINT | CTLFLAG_RW,
1126     &SCTP_BASE_SYSCTL(sctp_rttvar_rtt), 0, sysctl_sctp_check, "IU",
1127     SCTPCTL_RTTVAR_RTT_DESC);
1128
1129 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, rttvar_eqret, CTLTYPE_UINT | CTLFLAG_RW,
1130     &SCTP_BASE_SYSCTL(sctp_rttvar_eqret), 0, sysctl_sctp_check, "IU",
1131     SCTPCTL_RTTVAR_EQRET_DESC);
1132
1133 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, rttvar_steady_step, CTLTYPE_UINT | CTLFLAG_RW,
1134     &SCTP_BASE_SYSCTL(sctp_steady_step), 0, sysctl_sctp_check, "IU",
1135     SCTPCTL_RTTVAR_STEADYS_DESC);
1136
1137 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, use_dcccecn, CTLTYPE_UINT | CTLFLAG_RW,
1138     &SCTP_BASE_SYSCTL(sctp_use_dccc_ecn), 0, sysctl_sctp_check, "IU",
1139     SCTPCTL_RTTVAR_DCCCECN_DESC);
1140
1141 #ifdef SCTP_DEBUG
1142 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, debug, CTLTYPE_UINT | CTLFLAG_RW,
1143     &SCTP_BASE_SYSCTL(sctp_debug_on), 0, sysctl_sctp_check, "IU",
1144     SCTPCTL_DEBUG_DESC);
1145 #endif
1146
1147
1148 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1149 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, output_unlocked, CTLTYPE_UINT | CTLFLAG_RW,
1150     &SCTP_BASE_SYSCTL(sctp_output_unlocked), 0, sysctl_sctp_check, "IU",
1151     SCTPCTL_OUTPUT_UNLOCKED_DESC);
1152 #endif
1153
1154 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
1155 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, stats,
1156     CTLTYPE_STRUCT | CTLFLAG_RW,
1157     0, 0, sysctl_stat_get, "S,sctpstat",
1158     "SCTP statistics (struct sctp_stat)");
1159 #else
1160 SYSCTL_VNET_STRUCT(_net_inet_sctp, OID_AUTO, stats, CTLFLAG_RW,
1161     &SCTP_BASE_STATS_SYSCTL, sctpstat,
1162     "SCTP statistics (struct sctp_stat)");
1163 #endif
1164
1165 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, assoclist, CTLTYPE_OPAQUE | CTLFLAG_RD,
1166     0, 0, sctp_assoclist,
1167     "S,xassoc", "List of active SCTP associations");