sys/netinet/sctp_sysctl.c

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