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