sys/netinet/sctp_sysctl.c

   1 /*-
   2  * Copyright (c) 2007, by Cisco Systems, Inc. All rights reserved.
   3  * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
   4  * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions are met:
   8  *
   9  * a) Redistributions of source code must retain the above copyright notice,
  10  *    this list of conditions and the following disclaimer.
  11  *
  12  * b) Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in
  14  *    the documentation and/or other materials provided with the distribution.
  15  *
  16  * c) Neither the name of Cisco Systems, Inc. nor the names of its
  17  *    contributors may be used to endorse or promote products derived
  18  *    from this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  22  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  24  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  30  * THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <sys/cdefs.h>
  34 __FBSDID("$FreeBSD$");
  35
  36 #include <netinet/sctp_os.h>
  37 #include <netinet/sctp.h>
  38 #include <netinet/sctp_constants.h>
  39 #include <netinet/sctp_sysctl.h>
  40 #include <netinet/sctp_pcb.h>
  41 #include <netinet/sctputil.h>
  42 #include <netinet/sctp_output.h>
  43 #include <sys/smp.h>
  44 #include <sys/sysctl.h>
  45
  46 FEATURE(sctp, "Stream Control Transmission Protocol");
  47
  48 /*
  49  * sysctl tunable variables
  50  */
  51
  52 void
  53 sctp_init_sysctls()
  54 {
  55         SCTP_BASE_SYSCTL(sctp_sendspace) = SCTPCTL_MAXDGRAM_DEFAULT;
  56         SCTP_BASE_SYSCTL(sctp_recvspace) = SCTPCTL_RECVSPACE_DEFAULT;
  57         SCTP_BASE_SYSCTL(sctp_auto_asconf) = SCTPCTL_AUTOASCONF_DEFAULT;
  58         SCTP_BASE_SYSCTL(sctp_multiple_asconfs) = SCTPCTL_MULTIPLEASCONFS_DEFAULT;
  59         SCTP_BASE_SYSCTL(sctp_ecn_enable) = SCTPCTL_ECN_ENABLE_DEFAULT;
  60         SCTP_BASE_SYSCTL(sctp_pr_enable) = SCTPCTL_PR_ENABLE_DEFAULT;
  61         SCTP_BASE_SYSCTL(sctp_auth_enable) = SCTPCTL_AUTH_ENABLE_DEFAULT;
  62         SCTP_BASE_SYSCTL(sctp_asconf_enable) = SCTPCTL_ASCONF_ENABLE_DEFAULT;
  63         SCTP_BASE_SYSCTL(sctp_reconfig_enable) = SCTPCTL_RECONFIG_ENABLE_DEFAULT;
  64         SCTP_BASE_SYSCTL(sctp_nrsack_enable) = SCTPCTL_NRSACK_ENABLE_DEFAULT;
  65         SCTP_BASE_SYSCTL(sctp_pktdrop_enable) = SCTPCTL_PKTDROP_ENABLE_DEFAULT;
  66         SCTP_BASE_SYSCTL(sctp_peer_chunk_oh) = SCTPCTL_PEER_CHKOH_DEFAULT;
  67         SCTP_BASE_SYSCTL(sctp_max_burst_default) = SCTPCTL_MAXBURST_DEFAULT;
  68         SCTP_BASE_SYSCTL(sctp_fr_max_burst_default) = SCTPCTL_FRMAXBURST_DEFAULT;
  69         SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue) = SCTPCTL_MAXCHUNKS_DEFAULT;
  70         SCTP_BASE_SYSCTL(sctp_hashtblsize) = SCTPCTL_TCBHASHSIZE_DEFAULT;
  71         SCTP_BASE_SYSCTL(sctp_pcbtblsize) = SCTPCTL_PCBHASHSIZE_DEFAULT;
  72         SCTP_BASE_SYSCTL(sctp_min_split_point) = SCTPCTL_MIN_SPLIT_POINT_DEFAULT;
  73         SCTP_BASE_SYSCTL(sctp_chunkscale) = SCTPCTL_CHUNKSCALE_DEFAULT;
  74         SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default) = SCTPCTL_DELAYED_SACK_TIME_DEFAULT;
  75         SCTP_BASE_SYSCTL(sctp_sack_freq_default) = SCTPCTL_SACK_FREQ_DEFAULT;
  76         SCTP_BASE_SYSCTL(sctp_system_free_resc_limit) = SCTPCTL_SYS_RESOURCE_DEFAULT;
  77         SCTP_BASE_SYSCTL(sctp_asoc_free_resc_limit) = SCTPCTL_ASOC_RESOURCE_DEFAULT;
  78         SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default) = SCTPCTL_HEARTBEAT_INTERVAL_DEFAULT;
  79         SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default) = SCTPCTL_PMTU_RAISE_TIME_DEFAULT;
  80         SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default) = SCTPCTL_SHUTDOWN_GUARD_TIME_DEFAULT;
  81         SCTP_BASE_SYSCTL(sctp_secret_lifetime_default) = SCTPCTL_SECRET_LIFETIME_DEFAULT;
  82         SCTP_BASE_SYSCTL(sctp_rto_max_default) = SCTPCTL_RTO_MAX_DEFAULT;
  83         SCTP_BASE_SYSCTL(sctp_rto_min_default) = SCTPCTL_RTO_MIN_DEFAULT;
  84         SCTP_BASE_SYSCTL(sctp_rto_initial_default) = SCTPCTL_RTO_INITIAL_DEFAULT;
  85         SCTP_BASE_SYSCTL(sctp_init_rto_max_default) = SCTPCTL_INIT_RTO_MAX_DEFAULT;
  86         SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default) = SCTPCTL_VALID_COOKIE_LIFE_DEFAULT;
  87         SCTP_BASE_SYSCTL(sctp_init_rtx_max_default) = SCTPCTL_INIT_RTX_MAX_DEFAULT;
  88         SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default) = SCTPCTL_ASSOC_RTX_MAX_DEFAULT;
  89         SCTP_BASE_SYSCTL(sctp_path_rtx_max_default) = SCTPCTL_PATH_RTX_MAX_DEFAULT;
  90         SCTP_BASE_SYSCTL(sctp_path_pf_threshold) = SCTPCTL_PATH_PF_THRESHOLD_DEFAULT;
  91         SCTP_BASE_SYSCTL(sctp_add_more_threshold) = SCTPCTL_ADD_MORE_ON_OUTPUT_DEFAULT;
  92         SCTP_BASE_SYSCTL(sctp_nr_incoming_streams_default) = SCTPCTL_INCOMING_STREAMS_DEFAULT;
  93         SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default) = SCTPCTL_OUTGOING_STREAMS_DEFAULT;
  94         SCTP_BASE_SYSCTL(sctp_cmt_on_off) = SCTPCTL_CMT_ON_OFF_DEFAULT;
  95         SCTP_BASE_SYSCTL(sctp_cmt_use_dac) = SCTPCTL_CMT_USE_DAC_DEFAULT;
  96         SCTP_BASE_SYSCTL(sctp_use_cwnd_based_maxburst) = SCTPCTL_CWND_MAXBURST_DEFAULT;
  97         SCTP_BASE_SYSCTL(sctp_nat_friendly) = SCTPCTL_NAT_FRIENDLY_DEFAULT;
  98         SCTP_BASE_SYSCTL(sctp_L2_abc_variable) = SCTPCTL_ABC_L_VAR_DEFAULT;
  99         SCTP_BASE_SYSCTL(sctp_mbuf_threshold_count) = SCTPCTL_MAX_CHAINED_MBUFS_DEFAULT;
 100         SCTP_BASE_SYSCTL(sctp_do_drain) = SCTPCTL_DO_SCTP_DRAIN_DEFAULT;
 101         SCTP_BASE_SYSCTL(sctp_hb_maxburst) = SCTPCTL_HB_MAX_BURST_DEFAULT;
 102         SCTP_BASE_SYSCTL(sctp_abort_if_one_2_one_hits_limit) = SCTPCTL_ABORT_AT_LIMIT_DEFAULT;
 103         SCTP_BASE_SYSCTL(sctp_min_residual) = SCTPCTL_MIN_RESIDUAL_DEFAULT;
 104         SCTP_BASE_SYSCTL(sctp_max_retran_chunk) = SCTPCTL_MAX_RETRAN_CHUNK_DEFAULT;
 105         SCTP_BASE_SYSCTL(sctp_logging_level) = SCTPCTL_LOGGING_LEVEL_DEFAULT;
 106         SCTP_BASE_SYSCTL(sctp_default_cc_module) = SCTPCTL_DEFAULT_CC_MODULE_DEFAULT;
 107         SCTP_BASE_SYSCTL(sctp_default_ss_module) = SCTPCTL_DEFAULT_SS_MODULE_DEFAULT;
 108         SCTP_BASE_SYSCTL(sctp_default_frag_interleave) = SCTPCTL_DEFAULT_FRAG_INTERLEAVE_DEFAULT;
 109         SCTP_BASE_SYSCTL(sctp_mobility_base) = SCTPCTL_MOBILITY_BASE_DEFAULT;
 110         SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) = SCTPCTL_MOBILITY_FASTHANDOFF_DEFAULT;
 111         SCTP_BASE_SYSCTL(sctp_vtag_time_wait) = SCTPCTL_TIME_WAIT_DEFAULT;
 112         SCTP_BASE_SYSCTL(sctp_buffer_splitting) = SCTPCTL_BUFFER_SPLITTING_DEFAULT;
 113         SCTP_BASE_SYSCTL(sctp_initial_cwnd) = SCTPCTL_INITIAL_CWND_DEFAULT;
 114         SCTP_BASE_SYSCTL(sctp_rttvar_bw) = SCTPCTL_RTTVAR_BW_DEFAULT;
 115         SCTP_BASE_SYSCTL(sctp_rttvar_rtt) = SCTPCTL_RTTVAR_RTT_DEFAULT;
 116         SCTP_BASE_SYSCTL(sctp_rttvar_eqret) = SCTPCTL_RTTVAR_EQRET_DEFAULT;
 117         SCTP_BASE_SYSCTL(sctp_steady_step) = SCTPCTL_RTTVAR_STEADYS_DEFAULT;
 118         SCTP_BASE_SYSCTL(sctp_use_dccc_ecn) = SCTPCTL_RTTVAR_DCCCECN_DEFAULT;
 119         SCTP_BASE_SYSCTL(sctp_blackhole) = SCTPCTL_BLACKHOLE_DEFAULT;
 120         SCTP_BASE_SYSCTL(sctp_diag_info_code) = SCTPCTL_DIAG_INFO_CODE_DEFAULT;
 121 #if defined(SCTP_LOCAL_TRACE_BUF)
 122         memset(&SCTP_BASE_SYSCTL(sctp_log), 0, sizeof(struct sctp_log));
 123 #endif
 124         SCTP_BASE_SYSCTL(sctp_udp_tunneling_port) = SCTPCTL_UDP_TUNNELING_PORT_DEFAULT;
 125         SCTP_BASE_SYSCTL(sctp_enable_sack_immediately) = SCTPCTL_SACK_IMMEDIATELY_ENABLE_DEFAULT;
 126         SCTP_BASE_SYSCTL(sctp_inits_include_nat_friendly) = SCTPCTL_NAT_FRIENDLY_INITS_DEFAULT;
 127 #if defined(SCTP_DEBUG)
 128         SCTP_BASE_SYSCTL(sctp_debug_on) = SCTPCTL_DEBUG_DEFAULT;
 129 #endif
 130 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
 131         SCTP_BASE_SYSCTL(sctp_output_unlocked) = SCTPCTL_OUTPUT_UNLOCKED_DEFAULT;
 132 #endif
 133 }
 134
 135
 136 /* It returns an upper limit. No filtering is done here */
 137 static unsigned int
 138 sctp_sysctl_number_of_addresses(struct sctp_inpcb *inp)
 139 {
 140         unsigned int cnt;
 141         struct sctp_vrf *vrf;
 142         struct sctp_ifn *sctp_ifn;
 143         struct sctp_ifa *sctp_ifa;
 144         struct sctp_laddr *laddr;
 145
 146         cnt = 0;
 147         /* neither Mac OS X nor FreeBSD support mulitple routing functions */
 148         if ((vrf = sctp_find_vrf(inp->def_vrf_id)) == NULL) {
 149                 return (0);
 150         }
 151         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
 152                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
 153                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
 154                                 switch (sctp_ifa->address.sa.sa_family) {
 155 #ifdef INET
 156                                 case AF_INET:
 157 #endif
 158 #ifdef INET6
 159                                 case AF_INET6:
 160 #endif
 161                                         cnt++;
 162                                         break;
 163                                 default:
 164                                         break;
 165                                 }
 166                         }
 167                 }
 168         } else {
 169                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
 170                         switch (laddr->ifa->address.sa.sa_family) {
 171 #ifdef INET
 172                         case AF_INET:
 173 #endif
 174 #ifdef INET6
 175                         case AF_INET6:
 176 #endif
 177                                 cnt++;
 178                                 break;
 179                         default:
 180                                 break;
 181                         }
 182                 }
 183         }
 184         return (cnt);
 185 }
 186
 187 static int
 188 sctp_sysctl_copy_out_local_addresses(struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sysctl_req *req)
 189 {
 190         struct sctp_ifn *sctp_ifn;
 191         struct sctp_ifa *sctp_ifa;
 192         int loopback_scope, ipv4_local_scope, local_scope, site_scope;
 193         int ipv4_addr_legal, ipv6_addr_legal;
 194         struct sctp_vrf *vrf;
 195         struct xsctp_laddr xladdr;
 196         struct sctp_laddr *laddr;
 197         int error;
 198
 199         /* Turn on all the appropriate scope */
 200         if (stcb) {
 201                 /* use association specific values */
 202                 loopback_scope = stcb->asoc.scope.loopback_scope;
 203                 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
 204                 local_scope = stcb->asoc.scope.local_scope;
 205                 site_scope = stcb->asoc.scope.site_scope;
 206                 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
 207                 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
 208         } else {
 209                 /* Use generic values for endpoints. */
 210                 loopback_scope = 1;
 211                 ipv4_local_scope = 1;
 212                 local_scope = 1;
 213                 site_scope = 1;
 214                 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
 215                         ipv6_addr_legal = 1;
 216                         if (SCTP_IPV6_V6ONLY(inp)) {
 217                                 ipv4_addr_legal = 0;
 218                         } else {
 219                                 ipv4_addr_legal = 1;
 220                         }
 221                 } else {
 222                         ipv6_addr_legal = 0;
 223                         ipv4_addr_legal = 1;
 224                 }
 225         }
 226
 227         /* neither Mac OS X nor FreeBSD support mulitple routing functions */
 228         if ((vrf = sctp_find_vrf(inp->def_vrf_id)) == NULL) {
 229                 SCTP_INP_RUNLOCK(inp);
 230                 SCTP_INP_INFO_RUNLOCK();
 231                 return (-1);
 232         }
 233         if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
 234                 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
 235                         if ((loopback_scope == 0) && SCTP_IFN_IS_IFT_LOOP(sctp_ifn))
 236                                 /* Skip loopback if loopback_scope not set */
 237                                 continue;
 238                         LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
 239                                 if (stcb) {
 240                                         /*
 241                                          * ignore if blacklisted at
 242                                          * association level
 243                                          */
 244                                         if (sctp_is_addr_restricted(stcb, sctp_ifa))
 245                                                 continue;
 246                                 }
 247                                 switch (sctp_ifa->address.sa.sa_family) {
 248 #ifdef INET
 249                                 case AF_INET:
 250                                         if (ipv4_addr_legal) {
 251                                                 struct sockaddr_in *sin;
 252
 253                                                 sin = &sctp_ifa->address.sin;
 254                                                 if (sin->sin_addr.s_addr == 0)
 255                                                         continue;
 256                                                 if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
 257                                                     &sin->sin_addr) != 0) {
 258                                                         continue;
 259                                                 }
 260                                                 if ((ipv4_local_scope == 0) && (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)))
 261                                                         continue;
 262                                         } else {
 263                                                 continue;
 264                                         }
 265                                         break;
 266 #endif
 267 #ifdef INET6
 268                                 case AF_INET6:
 269                                         if (ipv6_addr_legal) {
 270                                                 struct sockaddr_in6 *sin6;
 271
 272                                                 sin6 = &sctp_ifa->address.sin6;
 273                                                 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
 274                                                         continue;
 275                                                 if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
 276                                                     &sin6->sin6_addr) != 0) {
 277                                                         continue;
 278                                                 }
 279                                                 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
 280                                                         if (local_scope == 0)
 281                                                                 continue;
 282                                                 }
 283                                                 if ((site_scope == 0) && (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)))
 284                                                         continue;
 285                                         } else {
 286                                                 continue;
 287                                         }
 288                                         break;
 289 #endif
 290                                 default:
 291                                         continue;
 292                                 }
 293                                 memset((void *)&xladdr, 0, sizeof(struct xsctp_laddr));
 294                                 memcpy((void *)&xladdr.address, (const void *)&sctp_ifa->address, sizeof(union sctp_sockstore));
 295                                 SCTP_INP_RUNLOCK(inp);
 296                                 SCTP_INP_INFO_RUNLOCK();
 297                                 error = SYSCTL_OUT(req, &xladdr, sizeof(struct xsctp_laddr));
 298                                 if (error) {
 299                                         return (error);
 300                                 } else {
 301                                         SCTP_INP_INFO_RLOCK();
 302                                         SCTP_INP_RLOCK(inp);
 303                                 }
 304                         }
 305                 }
 306         } else {
 307                 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
 308                         /* ignore if blacklisted at association level */
 309                         if (stcb && sctp_is_addr_restricted(stcb, laddr->ifa))
 310                                 continue;
 311                         memset((void *)&xladdr, 0, sizeof(struct xsctp_laddr));
 312                         memcpy((void *)&xladdr.address, (const void *)&laddr->ifa->address, sizeof(union sctp_sockstore));
 313                         xladdr.start_time.tv_sec = (uint32_t)laddr->start_time.tv_sec;
 314                         xladdr.start_time.tv_usec = (uint32_t)laddr->start_time.tv_usec;
 315                         SCTP_INP_RUNLOCK(inp);
 316                         SCTP_INP_INFO_RUNLOCK();
 317                         error = SYSCTL_OUT(req, &xladdr, sizeof(struct xsctp_laddr));
 318                         if (error) {
 319                                 return (error);
 320                         } else {
 321                                 SCTP_INP_INFO_RLOCK();
 322                                 SCTP_INP_RLOCK(inp);
 323                         }
 324                 }
 325         }
 326         memset((void *)&xladdr, 0, sizeof(struct xsctp_laddr));
 327         xladdr.last = 1;
 328         SCTP_INP_RUNLOCK(inp);
 329         SCTP_INP_INFO_RUNLOCK();
 330         error = SYSCTL_OUT(req, &xladdr, sizeof(struct xsctp_laddr));
 331
 332         if (error) {
 333                 return (error);
 334         } else {
 335                 SCTP_INP_INFO_RLOCK();
 336                 SCTP_INP_RLOCK(inp);
 337                 return (0);
 338         }
 339 }
 340
 341 /*
 342  * sysctl functions
 343  */
 344 static int
 345 sctp_sysctl_handle_assoclist(SYSCTL_HANDLER_ARGS)
 346 {
 347         unsigned int number_of_endpoints;
 348         unsigned int number_of_local_addresses;
 349         unsigned int number_of_associations;
 350         unsigned int number_of_remote_addresses;
 351         unsigned int n;
 352         int error;
 353         struct sctp_inpcb *inp;
 354         struct sctp_tcb *stcb;
 355         struct sctp_nets *net;
 356         struct xsctp_inpcb xinpcb;
 357         struct xsctp_tcb xstcb;
 358         struct xsctp_raddr xraddr;
 359         struct socket *so;
 360
 361         number_of_endpoints = 0;
 362         number_of_local_addresses = 0;
 363         number_of_associations = 0;
 364         number_of_remote_addresses = 0;
 365
 366         SCTP_INP_INFO_RLOCK();
 367         if (req->oldptr == NULL) {
 368                 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
 369                         SCTP_INP_RLOCK(inp);
 370                         number_of_endpoints++;
 371                         number_of_local_addresses += sctp_sysctl_number_of_addresses(inp);
 372                         LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
 373                                 number_of_associations++;
 374                                 number_of_local_addresses += sctp_sysctl_number_of_addresses(inp);
 375                                 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 376                                         number_of_remote_addresses++;
 377                                 }
 378                         }
 379                         SCTP_INP_RUNLOCK(inp);
 380                 }
 381                 SCTP_INP_INFO_RUNLOCK();
 382                 n = (number_of_endpoints + 1) * sizeof(struct xsctp_inpcb) +
 383                     (number_of_local_addresses + number_of_endpoints + number_of_associations) * sizeof(struct xsctp_laddr) +
 384                     (number_of_associations + number_of_endpoints) * sizeof(struct xsctp_tcb) +
 385                     (number_of_remote_addresses + number_of_associations) * sizeof(struct xsctp_raddr);
 386
 387                 /* request some more memory than needed */
 388                 req->oldidx = (n + n / 8);
 389                 return (0);
 390         }
 391         if (req->newptr != NULL) {
 392                 SCTP_INP_INFO_RUNLOCK();
 393                 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_SYSCTL, EPERM);
 394                 return (EPERM);
 395         }
 396         LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
 397                 SCTP_INP_RLOCK(inp);
 398                 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
 399                         /* if its allgone it is being freed - skip it  */
 400                         goto skip;
 401                 }
 402                 xinpcb.last = 0;
 403                 xinpcb.local_port = ntohs(inp->sctp_lport);
 404                 xinpcb.flags = inp->sctp_flags;
 405                 xinpcb.features = inp->sctp_features;
 406                 xinpcb.total_sends = inp->total_sends;
 407                 xinpcb.total_recvs = inp->total_recvs;
 408                 xinpcb.total_nospaces = inp->total_nospaces;
 409                 xinpcb.fragmentation_point = inp->sctp_frag_point;
 410                 xinpcb.socket = inp->sctp_socket;
 411                 so = inp->sctp_socket;
 412                 if ((so == NULL) ||
 413                     (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
 414                         xinpcb.qlen = 0;
 415                         xinpcb.maxqlen = 0;
 416                 } else {
 417                         xinpcb.qlen = so->so_qlen;
 418                         xinpcb.qlen_old = so->so_qlen > USHRT_MAX ?
 419                             USHRT_MAX : (uint16_t)so->so_qlen;
 420                         xinpcb.maxqlen = so->so_qlimit;
 421                         xinpcb.maxqlen_old = so->so_qlimit > USHRT_MAX ?
 422                             USHRT_MAX : (uint16_t)so->so_qlimit;
 423                 }
 424                 SCTP_INP_INCR_REF(inp);
 425                 SCTP_INP_RUNLOCK(inp);
 426                 SCTP_INP_INFO_RUNLOCK();
 427                 error = SYSCTL_OUT(req, &xinpcb, sizeof(struct xsctp_inpcb));
 428                 if (error) {
 429                         SCTP_INP_DECR_REF(inp);
 430                         return (error);
 431                 }
 432                 SCTP_INP_INFO_RLOCK();
 433                 SCTP_INP_RLOCK(inp);
 434                 error = sctp_sysctl_copy_out_local_addresses(inp, NULL, req);
 435                 if (error) {
 436                         SCTP_INP_DECR_REF(inp);
 437                         return (error);
 438                 }
 439                 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
 440                         SCTP_TCB_LOCK(stcb);
 441                         atomic_add_int(&stcb->asoc.refcnt, 1);
 442                         SCTP_TCB_UNLOCK(stcb);
 443                         xstcb.last = 0;
 444                         xstcb.local_port = ntohs(inp->sctp_lport);
 445                         xstcb.remote_port = ntohs(stcb->rport);
 446                         if (stcb->asoc.primary_destination != NULL)
 447                                 xstcb.primary_addr = stcb->asoc.primary_destination->ro._l_addr;
 448                         xstcb.heartbeat_interval = stcb->asoc.heart_beat_delay;
 449                         xstcb.state = (uint32_t)sctp_map_assoc_state(stcb->asoc.state);
 450                         /* 7.0 does not support these */
 451                         xstcb.assoc_id = sctp_get_associd(stcb);
 452                         xstcb.peers_rwnd = stcb->asoc.peers_rwnd;
 453                         xstcb.in_streams = stcb->asoc.streamincnt;
 454                         xstcb.out_streams = stcb->asoc.streamoutcnt;
 455                         xstcb.max_nr_retrans = stcb->asoc.overall_error_count;
 456                         xstcb.primary_process = 0;      /* not really supported
 457                                                          * yet */
 458                         xstcb.T1_expireries = stcb->asoc.timoinit + stcb->asoc.timocookie;
 459                         xstcb.T2_expireries = stcb->asoc.timoshutdown + stcb->asoc.timoshutdownack;
 460                         xstcb.retransmitted_tsns = stcb->asoc.marked_retrans;
 461                         xstcb.start_time.tv_sec = (uint32_t)stcb->asoc.start_time.tv_sec;
 462                         xstcb.start_time.tv_usec = (uint32_t)stcb->asoc.start_time.tv_usec;
 463                         xstcb.discontinuity_time.tv_sec = (uint32_t)stcb->asoc.discontinuity_time.tv_sec;
 464                         xstcb.discontinuity_time.tv_usec = (uint32_t)stcb->asoc.discontinuity_time.tv_usec;
 465                         xstcb.total_sends = stcb->total_sends;
 466                         xstcb.total_recvs = stcb->total_recvs;
 467                         xstcb.local_tag = stcb->asoc.my_vtag;
 468                         xstcb.remote_tag = stcb->asoc.peer_vtag;
 469                         xstcb.initial_tsn = stcb->asoc.init_seq_number;
 470                         xstcb.highest_tsn = stcb->asoc.sending_seq - 1;
 471                         xstcb.cumulative_tsn = stcb->asoc.last_acked_seq;
 472                         xstcb.cumulative_tsn_ack = stcb->asoc.cumulative_tsn;
 473                         xstcb.mtu = stcb->asoc.smallest_mtu;
 474                         xstcb.refcnt = stcb->asoc.refcnt;
 475                         SCTP_INP_RUNLOCK(inp);
 476                         SCTP_INP_INFO_RUNLOCK();
 477                         error = SYSCTL_OUT(req, &xstcb, sizeof(struct xsctp_tcb));
 478                         if (error) {
 479                                 SCTP_INP_DECR_REF(inp);
 480                                 atomic_subtract_int(&stcb->asoc.refcnt, 1);
 481                                 return (error);
 482                         }
 483                         SCTP_INP_INFO_RLOCK();
 484                         SCTP_INP_RLOCK(inp);
 485                         error = sctp_sysctl_copy_out_local_addresses(inp, stcb, req);
 486                         if (error) {
 487                                 SCTP_INP_DECR_REF(inp);
 488                                 atomic_subtract_int(&stcb->asoc.refcnt, 1);
 489                                 return (error);
 490                         }
 491                         TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
 492                                 xraddr.last = 0;
 493                                 xraddr.address = net->ro._l_addr;
 494                                 xraddr.active = ((net->dest_state & SCTP_ADDR_REACHABLE) == SCTP_ADDR_REACHABLE);
 495                                 xraddr.confirmed = ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0);
 496                                 xraddr.heartbeat_enabled = ((net->dest_state & SCTP_ADDR_NOHB) == 0);
 497                                 xraddr.potentially_failed = ((net->dest_state & SCTP_ADDR_PF) == SCTP_ADDR_PF);
 498                                 xraddr.rto = net->RTO;
 499                                 xraddr.max_path_rtx = net->failure_threshold;
 500                                 xraddr.rtx = net->marked_retrans;
 501                                 xraddr.error_counter = net->error_count;
 502                                 xraddr.cwnd = net->cwnd;
 503                                 xraddr.flight_size = net->flight_size;
 504                                 xraddr.mtu = net->mtu;
 505                                 xraddr.rtt = net->rtt / 1000;
 506                                 xraddr.heartbeat_interval = net->heart_beat_delay;
 507                                 xraddr.ssthresh = net->ssthresh;
 508                                 xraddr.encaps_port = net->port;
 509                                 if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
 510                                         xraddr.state = SCTP_UNCONFIRMED;
 511                                 } else if (net->dest_state & SCTP_ADDR_REACHABLE) {
 512                                         xraddr.state = SCTP_ACTIVE;
 513                                 } else {
 514                                         xraddr.state = SCTP_INACTIVE;
 515                                 }
 516                                 xraddr.start_time.tv_sec = (uint32_t)net->start_time.tv_sec;
 517                                 xraddr.start_time.tv_usec = (uint32_t)net->start_time.tv_usec;
 518                                 SCTP_INP_RUNLOCK(inp);
 519                                 SCTP_INP_INFO_RUNLOCK();
 520                                 error = SYSCTL_OUT(req, &xraddr, sizeof(struct xsctp_raddr));
 521                                 if (error) {
 522                                         SCTP_INP_DECR_REF(inp);
 523                                         atomic_subtract_int(&stcb->asoc.refcnt, 1);
 524                                         return (error);
 525                                 }
 526                                 SCTP_INP_INFO_RLOCK();
 527                                 SCTP_INP_RLOCK(inp);
 528                         }
 529                         atomic_subtract_int(&stcb->asoc.refcnt, 1);
 530                         memset((void *)&xraddr, 0, sizeof(struct xsctp_raddr));
 531                         xraddr.last = 1;
 532                         SCTP_INP_RUNLOCK(inp);
 533                         SCTP_INP_INFO_RUNLOCK();
 534                         error = SYSCTL_OUT(req, &xraddr, sizeof(struct xsctp_raddr));
 535                         if (error) {
 536                                 SCTP_INP_DECR_REF(inp);
 537                                 return (error);
 538                         }
 539                         SCTP_INP_INFO_RLOCK();
 540                         SCTP_INP_RLOCK(inp);
 541                 }
 542                 SCTP_INP_DECR_REF(inp);
 543                 SCTP_INP_RUNLOCK(inp);
 544                 SCTP_INP_INFO_RUNLOCK();
 545                 memset((void *)&xstcb, 0, sizeof(struct xsctp_tcb));
 546                 xstcb.last = 1;
 547                 error = SYSCTL_OUT(req, &xstcb, sizeof(struct xsctp_tcb));
 548                 if (error) {
 549                         return (error);
 550                 }
 551 skip:
 552                 SCTP_INP_INFO_RLOCK();
 553         }
 554         SCTP_INP_INFO_RUNLOCK();
 555
 556         memset((void *)&xinpcb, 0, sizeof(struct xsctp_inpcb));
 557         xinpcb.last = 1;
 558         error = SYSCTL_OUT(req, &xinpcb, sizeof(struct xsctp_inpcb));
 559         return (error);
 560 }
 561
 562 static int
 563 sctp_sysctl_handle_udp_tunneling(SYSCTL_HANDLER_ARGS)
 564 {
 565         int error;
 566         uint32_t old, new;
 567
 568         SCTP_INP_INFO_RLOCK();
 569         old = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
 570         SCTP_INP_INFO_RUNLOCK();
 571         new = old;
 572         error = sysctl_handle_int(oidp, &new, 0, req);
 573         if ((error == 0) &&
 574             (req->newptr != NULL)) {
 575 #if (SCTPCTL_UDP_TUNNELING_PORT_MIN == 0)
 576                 if (new > SCTPCTL_UDP_TUNNELING_PORT_MAX) {
 577 #else
 578                 if ((new < SCTPCTL_UDP_TUNNELING_PORT_MIN) ||
 579                     (new > SCTPCTL_UDP_TUNNELING_PORT_MAX)) {
 580 #endif
 581                         error = EINVAL;
 582                 } else {
 583                         SCTP_INP_INFO_WLOCK();
 584                         SCTP_BASE_SYSCTL(sctp_udp_tunneling_port) = new;
 585                         if (old != 0) {
 586                                 sctp_over_udp_stop();
 587                         }
 588                         if (new != 0) {
 589                                 error = sctp_over_udp_start();
 590                         }
 591                         SCTP_INP_INFO_WUNLOCK();
 592                 }
 593         }
 594         return (error);
 595 }
 596
 597
 598 static int
 599 sctp_sysctl_handle_auth(SYSCTL_HANDLER_ARGS)
 600 {
 601         int error;
 602         uint32_t new;
 603
 604         new = SCTP_BASE_SYSCTL(sctp_auth_enable);
 605         error = sysctl_handle_int(oidp, &new, 0, req);
 606         if ((error == 0) &&
 607             (req->newptr != NULL)) {
 608 #if (SCTPCTL_AUTH_ENABLE_MIN == 0)
 609                 if ((new > SCTPCTL_AUTH_ENABLE_MAX) ||
 610                     ((new == 0) && (SCTP_BASE_SYSCTL(sctp_asconf_enable) == 1))) {
 611 #else
 612                 if ((new < SCTPCTL_AUTH_ENABLE_MIN) ||
 613                     (new > SCTPCTL_AUTH_ENABLE_MAX) ||
 614                     ((new == 0) && (SCTP_BASE_SYSCTL(sctp_asconf_enable) == 1))) {
 615 #endif
 616                         error = EINVAL;
 617                 } else {
 618                         SCTP_BASE_SYSCTL(sctp_auth_enable) = new;
 619                 }
 620         }
 621         return (error);
 622 }
 623
 624 static int
 625 sctp_sysctl_handle_asconf(SYSCTL_HANDLER_ARGS)
 626 {
 627         int error;
 628         uint32_t new;
 629
 630         new = SCTP_BASE_SYSCTL(sctp_asconf_enable);
 631         error = sysctl_handle_int(oidp, &new, 0, req);
 632         if ((error == 0) &&
 633             (req->newptr != NULL)) {
 634 #if (SCTPCTL_ASCONF_ENABLE_MIN == 0)
 635                 if ((new > SCTPCTL_ASCONF_ENABLE_MAX) ||
 636                     ((new == 1) && (SCTP_BASE_SYSCTL(sctp_auth_enable) == 0))) {
 637 #else
 638                 if ((new < SCTPCTL_ASCONF_ENABLE_MIN) ||
 639                     (new > SCTPCTL_ASCONF_ENABLE_MAX) ||
 640                     ((new == 1) && (SCTP_BASE_SYSCTL(sctp_auth_enable) == 0))) {
 641 #endif
 642                         error = EINVAL;
 643                 } else {
 644                         SCTP_BASE_SYSCTL(sctp_asconf_enable) = new;
 645                 }
 646         }
 647         return (error);
 648 }
 649
 650 static int
 651 sctp_sysctl_handle_stats(SYSCTL_HANDLER_ARGS)
 652 {
 653         int error;
 654 #if defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
 655         struct sctpstat *sarry;
 656         struct sctpstat sb;
 657         int cpu;
 658 #endif
 659         struct sctpstat sb_temp;
 660
 661         if ((req->newptr != NULL) &&
 662             (req->newlen != sizeof(struct sctpstat))) {
 663                 return (EINVAL);
 664         }
 665         memset(&sb_temp, 0, sizeof(struct sctpstat));
 666
 667         if (req->newptr != NULL) {
 668                 error = SYSCTL_IN(req, &sb_temp, sizeof(struct sctpstat));
 669                 if (error != 0) {
 670                         return (error);
 671                 }
 672         }
 673 #if defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
 674         memset(&sb, 0, sizeof(sb));
 675         for (cpu = 0; cpu < mp_maxid; cpu++) {
 676                 sarry = &SCTP_BASE_STATS[cpu];
 677                 if (sarry->sctps_discontinuitytime.tv_sec > sb.sctps_discontinuitytime.tv_sec) {
 678                         sb.sctps_discontinuitytime.tv_sec = sarry->sctps_discontinuitytime.tv_sec;
 679                         sb.sctps_discontinuitytime.tv_usec = sarry->sctps_discontinuitytime.tv_usec;
 680                 }
 681                 sb.sctps_currestab += sarry->sctps_currestab;
 682                 sb.sctps_activeestab += sarry->sctps_activeestab;
 683                 sb.sctps_restartestab += sarry->sctps_restartestab;
 684                 sb.sctps_collisionestab += sarry->sctps_collisionestab;
 685                 sb.sctps_passiveestab += sarry->sctps_passiveestab;
 686                 sb.sctps_aborted += sarry->sctps_aborted;
 687                 sb.sctps_shutdown += sarry->sctps_shutdown;
 688                 sb.sctps_outoftheblue += sarry->sctps_outoftheblue;
 689                 sb.sctps_checksumerrors += sarry->sctps_checksumerrors;
 690                 sb.sctps_outcontrolchunks += sarry->sctps_outcontrolchunks;
 691                 sb.sctps_outorderchunks += sarry->sctps_outorderchunks;
 692                 sb.sctps_outunorderchunks += sarry->sctps_outunorderchunks;
 693                 sb.sctps_incontrolchunks += sarry->sctps_incontrolchunks;
 694                 sb.sctps_inorderchunks += sarry->sctps_inorderchunks;
 695                 sb.sctps_inunorderchunks += sarry->sctps_inunorderchunks;
 696                 sb.sctps_fragusrmsgs += sarry->sctps_fragusrmsgs;
 697                 sb.sctps_reasmusrmsgs += sarry->sctps_reasmusrmsgs;
 698                 sb.sctps_outpackets += sarry->sctps_outpackets;
 699                 sb.sctps_inpackets += sarry->sctps_inpackets;
 700                 sb.sctps_recvpackets += sarry->sctps_recvpackets;
 701                 sb.sctps_recvdatagrams += sarry->sctps_recvdatagrams;
 702                 sb.sctps_recvpktwithdata += sarry->sctps_recvpktwithdata;
 703                 sb.sctps_recvsacks += sarry->sctps_recvsacks;
 704                 sb.sctps_recvdata += sarry->sctps_recvdata;
 705                 sb.sctps_recvdupdata += sarry->sctps_recvdupdata;
 706                 sb.sctps_recvheartbeat += sarry->sctps_recvheartbeat;
 707                 sb.sctps_recvheartbeatack += sarry->sctps_recvheartbeatack;
 708                 sb.sctps_recvecne += sarry->sctps_recvecne;
 709                 sb.sctps_recvauth += sarry->sctps_recvauth;
 710                 sb.sctps_recvauthmissing += sarry->sctps_recvauthmissing;
 711                 sb.sctps_recvivalhmacid += sarry->sctps_recvivalhmacid;
 712                 sb.sctps_recvivalkeyid += sarry->sctps_recvivalkeyid;
 713                 sb.sctps_recvauthfailed += sarry->sctps_recvauthfailed;
 714                 sb.sctps_recvexpress += sarry->sctps_recvexpress;
 715                 sb.sctps_recvexpressm += sarry->sctps_recvexpressm;
 716                 sb.sctps_recvswcrc += sarry->sctps_recvswcrc;
 717                 sb.sctps_recvhwcrc += sarry->sctps_recvhwcrc;
 718                 sb.sctps_sendpackets += sarry->sctps_sendpackets;
 719                 sb.sctps_sendsacks += sarry->sctps_sendsacks;
 720                 sb.sctps_senddata += sarry->sctps_senddata;
 721                 sb.sctps_sendretransdata += sarry->sctps_sendretransdata;
 722                 sb.sctps_sendfastretrans += sarry->sctps_sendfastretrans;
 723                 sb.sctps_sendmultfastretrans += sarry->sctps_sendmultfastretrans;
 724                 sb.sctps_sendheartbeat += sarry->sctps_sendheartbeat;
 725                 sb.sctps_sendecne += sarry->sctps_sendecne;
 726                 sb.sctps_sendauth += sarry->sctps_sendauth;
 727                 sb.sctps_senderrors += sarry->sctps_senderrors;
 728                 sb.sctps_sendswcrc += sarry->sctps_sendswcrc;
 729                 sb.sctps_sendhwcrc += sarry->sctps_sendhwcrc;
 730                 sb.sctps_pdrpfmbox += sarry->sctps_pdrpfmbox;
 731                 sb.sctps_pdrpfehos += sarry->sctps_pdrpfehos;
 732                 sb.sctps_pdrpmbda += sarry->sctps_pdrpmbda;
 733                 sb.sctps_pdrpmbct += sarry->sctps_pdrpmbct;
 734                 sb.sctps_pdrpbwrpt += sarry->sctps_pdrpbwrpt;
 735                 sb.sctps_pdrpcrupt += sarry->sctps_pdrpcrupt;
 736                 sb.sctps_pdrpnedat += sarry->sctps_pdrpnedat;
 737                 sb.sctps_pdrppdbrk += sarry->sctps_pdrppdbrk;
 738                 sb.sctps_pdrptsnnf += sarry->sctps_pdrptsnnf;
 739                 sb.sctps_pdrpdnfnd += sarry->sctps_pdrpdnfnd;
 740                 sb.sctps_pdrpdiwnp += sarry->sctps_pdrpdiwnp;
 741                 sb.sctps_pdrpdizrw += sarry->sctps_pdrpdizrw;
 742                 sb.sctps_pdrpbadd += sarry->sctps_pdrpbadd;
 743                 sb.sctps_pdrpmark += sarry->sctps_pdrpmark;
 744                 sb.sctps_timoiterator += sarry->sctps_timoiterator;
 745                 sb.sctps_timodata += sarry->sctps_timodata;
 746                 sb.sctps_timowindowprobe += sarry->sctps_timowindowprobe;
 747                 sb.sctps_timoinit += sarry->sctps_timoinit;
 748                 sb.sctps_timosack += sarry->sctps_timosack;
 749                 sb.sctps_timoshutdown += sarry->sctps_timoshutdown;
 750                 sb.sctps_timoheartbeat += sarry->sctps_timoheartbeat;
 751                 sb.sctps_timocookie += sarry->sctps_timocookie;
 752                 sb.sctps_timosecret += sarry->sctps_timosecret;
 753                 sb.sctps_timopathmtu += sarry->sctps_timopathmtu;
 754                 sb.sctps_timoshutdownack += sarry->sctps_timoshutdownack;
 755                 sb.sctps_timoshutdownguard += sarry->sctps_timoshutdownguard;
 756                 sb.sctps_timostrmrst += sarry->sctps_timostrmrst;
 757                 sb.sctps_timoearlyfr += sarry->sctps_timoearlyfr;
 758                 sb.sctps_timoasconf += sarry->sctps_timoasconf;
 759                 sb.sctps_timodelprim += sarry->sctps_timodelprim;
 760                 sb.sctps_timoautoclose += sarry->sctps_timoautoclose;
 761                 sb.sctps_timoassockill += sarry->sctps_timoassockill;
 762                 sb.sctps_timoinpkill += sarry->sctps_timoinpkill;
 763                 sb.sctps_hdrops += sarry->sctps_hdrops;
 764                 sb.sctps_badsum += sarry->sctps_badsum;
 765                 sb.sctps_noport += sarry->sctps_noport;
 766                 sb.sctps_badvtag += sarry->sctps_badvtag;
 767                 sb.sctps_badsid += sarry->sctps_badsid;
 768                 sb.sctps_nomem += sarry->sctps_nomem;
 769                 sb.sctps_fastretransinrtt += sarry->sctps_fastretransinrtt;
 770                 sb.sctps_markedretrans += sarry->sctps_markedretrans;
 771                 sb.sctps_naglesent += sarry->sctps_naglesent;
 772                 sb.sctps_naglequeued += sarry->sctps_naglequeued;
 773                 sb.sctps_maxburstqueued += sarry->sctps_maxburstqueued;
 774                 sb.sctps_ifnomemqueued += sarry->sctps_ifnomemqueued;
 775                 sb.sctps_windowprobed += sarry->sctps_windowprobed;
 776                 sb.sctps_lowlevelerr += sarry->sctps_lowlevelerr;
 777                 sb.sctps_lowlevelerrusr += sarry->sctps_lowlevelerrusr;
 778                 sb.sctps_datadropchklmt += sarry->sctps_datadropchklmt;
 779                 sb.sctps_datadroprwnd += sarry->sctps_datadroprwnd;
 780                 sb.sctps_ecnereducedcwnd += sarry->sctps_ecnereducedcwnd;
 781                 sb.sctps_vtagexpress += sarry->sctps_vtagexpress;
 782                 sb.sctps_vtagbogus += sarry->sctps_vtagbogus;
 783                 sb.sctps_primary_randry += sarry->sctps_primary_randry;
 784                 sb.sctps_cmt_randry += sarry->sctps_cmt_randry;
 785                 sb.sctps_slowpath_sack += sarry->sctps_slowpath_sack;
 786                 sb.sctps_wu_sacks_sent += sarry->sctps_wu_sacks_sent;
 787                 sb.sctps_sends_with_flags += sarry->sctps_sends_with_flags;
 788                 sb.sctps_sends_with_unord += sarry->sctps_sends_with_unord;
 789                 sb.sctps_sends_with_eof += sarry->sctps_sends_with_eof;
 790                 sb.sctps_sends_with_abort += sarry->sctps_sends_with_abort;
 791                 sb.sctps_protocol_drain_calls += sarry->sctps_protocol_drain_calls;
 792                 sb.sctps_protocol_drains_done += sarry->sctps_protocol_drains_done;
 793                 sb.sctps_read_peeks += sarry->sctps_read_peeks;
 794                 sb.sctps_cached_chk += sarry->sctps_cached_chk;
 795                 sb.sctps_cached_strmoq += sarry->sctps_cached_strmoq;
 796                 sb.sctps_left_abandon += sarry->sctps_left_abandon;
 797                 sb.sctps_send_burst_avoid += sarry->sctps_send_burst_avoid;
 798                 sb.sctps_send_cwnd_avoid += sarry->sctps_send_cwnd_avoid;
 799                 sb.sctps_fwdtsn_map_over += sarry->sctps_fwdtsn_map_over;
 800                 if (req->newptr != NULL) {
 801                         memcpy(sarry, &sb_temp, sizeof(struct sctpstat));
 802                 }
 803         }
 804         error = SYSCTL_OUT(req, &sb, sizeof(struct sctpstat));
 805 #else
 806         error = SYSCTL_OUT(req, &SCTP_BASE_STATS, sizeof(struct sctpstat));
 807         if (error != 0) {
 808                 return (error);
 809         }
 810         if (req->newptr != NULL) {
 811                 memcpy(&SCTP_BASE_STATS, &sb_temp, sizeof(struct sctpstat));
 812         }
 813 #endif
 814         return (error);
 815 }
 816
 817 #if defined(SCTP_LOCAL_TRACE_BUF)
 818 static int
 819 sctp_sysctl_handle_trace_log(SYSCTL_HANDLER_ARGS)
 820 {
 821         int error;
 822
 823         error = SYSCTL_OUT(req, &SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log));
 824         return (error);
 825 }
 826
 827 static int
 828 sctp_sysctl_handle_trace_log_clear(SYSCTL_HANDLER_ARGS)
 829 {
 830         int error = 0;
 831
 832         memset(&SCTP_BASE_SYSCTL(sctp_log), 0, sizeof(struct sctp_log));
 833         return (error);
 834 }
 835 #endif
 836
 837 #define SCTP_UINT_SYSCTL(mib_name, var_name, prefix)                    \
 838         static int                                                      \
 839         sctp_sysctl_handle_##mib_name(SYSCTL_HANDLER_ARGS)              \
 840         {                                                               \
 841                 int error;                                              \
 842                 uint32_t new;                                           \
 843                                                                         \
 844                 new = SCTP_BASE_SYSCTL(var_name);                       \
 845                 error = sysctl_handle_int(oidp, &new, 0, req);          \
 846                 if ((error == 0) && (req->newptr != NULL)) {            \
 847                         if ((new < prefix##_MIN) ||                     \
 848                             (new > prefix##_MAX)) {                     \
 849                                 error = EINVAL;                         \
 850                         } else {                                        \
 851                                 SCTP_BASE_SYSCTL(var_name) = new;       \
 852                         }                                               \
 853                 }                                                       \
 854                 return (error);                                         \
 855         }                                                               \
 856         SYSCTL_PROC(_net_inet_sctp, OID_AUTO, mib_name,                 \
 857                          CTLFLAG_VNET|CTLTYPE_UINT|CTLFLAG_RW, NULL, 0, \
 858                          sctp_sysctl_handle_##mib_name, "UI", prefix##_DESC);
 859
 860 /*
 861  * sysctl definitions
 862  */
 863
 864 SCTP_UINT_SYSCTL(sendspace, sctp_sendspace, SCTPCTL_MAXDGRAM)
 865 SCTP_UINT_SYSCTL(recvspace, sctp_recvspace, SCTPCTL_RECVSPACE)
 866 SCTP_UINT_SYSCTL(auto_asconf, sctp_auto_asconf, SCTPCTL_AUTOASCONF)
 867 SCTP_UINT_SYSCTL(ecn_enable, sctp_ecn_enable, SCTPCTL_ECN_ENABLE)
 868 SCTP_UINT_SYSCTL(pr_enable, sctp_pr_enable, SCTPCTL_PR_ENABLE)
 869 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, auth_enable, CTLFLAG_VNET | CTLTYPE_UINT | CTLFLAG_RW,
 870     NULL, 0, sctp_sysctl_handle_auth, "IU", SCTPCTL_AUTH_ENABLE_DESC);
 871 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, asconf_enable, CTLFLAG_VNET | CTLTYPE_UINT | CTLFLAG_RW,
 872     NULL, 0, sctp_sysctl_handle_asconf, "IU", SCTPCTL_ASCONF_ENABLE_DESC);
 873 SCTP_UINT_SYSCTL(reconfig_enable, sctp_reconfig_enable, SCTPCTL_RECONFIG_ENABLE)
 874 SCTP_UINT_SYSCTL(nrsack_enable, sctp_nrsack_enable, SCTPCTL_NRSACK_ENABLE)
 875 SCTP_UINT_SYSCTL(pktdrop_enable, sctp_pktdrop_enable, SCTPCTL_PKTDROP_ENABLE)
 876 SCTP_UINT_SYSCTL(peer_chkoh, sctp_peer_chunk_oh, SCTPCTL_PEER_CHKOH)
 877 SCTP_UINT_SYSCTL(maxburst, sctp_max_burst_default, SCTPCTL_MAXBURST)
 878 SCTP_UINT_SYSCTL(fr_maxburst, sctp_fr_max_burst_default, SCTPCTL_FRMAXBURST)
 879 SCTP_UINT_SYSCTL(maxchunks, sctp_max_chunks_on_queue, SCTPCTL_MAXCHUNKS)
 880 SCTP_UINT_SYSCTL(tcbhashsize, sctp_hashtblsize, SCTPCTL_TCBHASHSIZE)
 881 SCTP_UINT_SYSCTL(pcbhashsize, sctp_pcbtblsize, SCTPCTL_PCBHASHSIZE)
 882 SCTP_UINT_SYSCTL(min_split_point, sctp_min_split_point, SCTPCTL_MIN_SPLIT_POINT)
 883 SCTP_UINT_SYSCTL(chunkscale, sctp_chunkscale, SCTPCTL_CHUNKSCALE)
 884 SCTP_UINT_SYSCTL(delayed_sack_time, sctp_delayed_sack_time_default, SCTPCTL_DELAYED_SACK_TIME)
 885 SCTP_UINT_SYSCTL(sack_freq, sctp_sack_freq_default, SCTPCTL_SACK_FREQ)
 886 SCTP_UINT_SYSCTL(sys_resource, sctp_system_free_resc_limit, SCTPCTL_SYS_RESOURCE)
 887 SCTP_UINT_SYSCTL(asoc_resource, sctp_asoc_free_resc_limit, SCTPCTL_ASOC_RESOURCE)
 888 SCTP_UINT_SYSCTL(heartbeat_interval, sctp_heartbeat_interval_default, SCTPCTL_HEARTBEAT_INTERVAL)
 889 SCTP_UINT_SYSCTL(pmtu_raise_time, sctp_pmtu_raise_time_default, SCTPCTL_PMTU_RAISE_TIME)
 890 SCTP_UINT_SYSCTL(shutdown_guard_time, sctp_shutdown_guard_time_default, SCTPCTL_SHUTDOWN_GUARD_TIME)
 891 SCTP_UINT_SYSCTL(secret_lifetime, sctp_secret_lifetime_default, SCTPCTL_SECRET_LIFETIME)
 892 SCTP_UINT_SYSCTL(rto_max, sctp_rto_max_default, SCTPCTL_RTO_MAX)
 893 SCTP_UINT_SYSCTL(rto_min, sctp_rto_min_default, SCTPCTL_RTO_MIN)
 894 SCTP_UINT_SYSCTL(rto_initial, sctp_rto_initial_default, SCTPCTL_RTO_INITIAL)
 895 SCTP_UINT_SYSCTL(init_rto_max, sctp_init_rto_max_default, SCTPCTL_INIT_RTO_MAX)
 896 SCTP_UINT_SYSCTL(valid_cookie_life, sctp_valid_cookie_life_default, SCTPCTL_VALID_COOKIE_LIFE)
 897 SCTP_UINT_SYSCTL(init_rtx_max, sctp_init_rtx_max_default, SCTPCTL_INIT_RTX_MAX)
 898 SCTP_UINT_SYSCTL(assoc_rtx_max, sctp_assoc_rtx_max_default, SCTPCTL_ASSOC_RTX_MAX)
 899 SCTP_UINT_SYSCTL(path_rtx_max, sctp_path_rtx_max_default, SCTPCTL_PATH_RTX_MAX)
 900 SCTP_UINT_SYSCTL(path_pf_threshold, sctp_path_pf_threshold, SCTPCTL_PATH_PF_THRESHOLD)
 901 SCTP_UINT_SYSCTL(add_more_on_output, sctp_add_more_threshold, SCTPCTL_ADD_MORE_ON_OUTPUT)
 902 SCTP_UINT_SYSCTL(incoming_streams, sctp_nr_incoming_streams_default, SCTPCTL_INCOMING_STREAMS)
 903 SCTP_UINT_SYSCTL(outgoing_streams, sctp_nr_outgoing_streams_default, SCTPCTL_OUTGOING_STREAMS)
 904 SCTP_UINT_SYSCTL(cmt_on_off, sctp_cmt_on_off, SCTPCTL_CMT_ON_OFF)
 905 SCTP_UINT_SYSCTL(cmt_use_dac, sctp_cmt_use_dac, SCTPCTL_CMT_USE_DAC)
 906 SCTP_UINT_SYSCTL(cwnd_maxburst, sctp_use_cwnd_based_maxburst, SCTPCTL_CWND_MAXBURST)
 907 SCTP_UINT_SYSCTL(nat_friendly, sctp_nat_friendly, SCTPCTL_NAT_FRIENDLY)
 908 SCTP_UINT_SYSCTL(abc_l_var, sctp_L2_abc_variable, SCTPCTL_ABC_L_VAR)
 909 SCTP_UINT_SYSCTL(max_chained_mbufs, sctp_mbuf_threshold_count, SCTPCTL_MAX_CHAINED_MBUFS)
 910 SCTP_UINT_SYSCTL(do_sctp_drain, sctp_do_drain, SCTPCTL_DO_SCTP_DRAIN)
 911 SCTP_UINT_SYSCTL(hb_max_burst, sctp_hb_maxburst, SCTPCTL_HB_MAX_BURST)
 912 SCTP_UINT_SYSCTL(abort_at_limit, sctp_abort_if_one_2_one_hits_limit, SCTPCTL_ABORT_AT_LIMIT)
 913 SCTP_UINT_SYSCTL(min_residual, sctp_min_residual, SCTPCTL_MIN_RESIDUAL)
 914 SCTP_UINT_SYSCTL(max_retran_chunk, sctp_max_retran_chunk, SCTPCTL_MAX_RETRAN_CHUNK)
 915 SCTP_UINT_SYSCTL(log_level, sctp_logging_level, SCTPCTL_LOGGING_LEVEL)
 916 SCTP_UINT_SYSCTL(default_cc_module, sctp_default_cc_module, SCTPCTL_DEFAULT_CC_MODULE)
 917 SCTP_UINT_SYSCTL(default_ss_module, sctp_default_ss_module, SCTPCTL_DEFAULT_SS_MODULE)
 918 SCTP_UINT_SYSCTL(default_frag_interleave, sctp_default_frag_interleave, SCTPCTL_DEFAULT_FRAG_INTERLEAVE)
 919 SCTP_UINT_SYSCTL(mobility_base, sctp_mobility_base, SCTPCTL_MOBILITY_BASE)
 920 SCTP_UINT_SYSCTL(mobility_fasthandoff, sctp_mobility_fasthandoff, SCTPCTL_MOBILITY_FASTHANDOFF)
 921 #if defined(SCTP_LOCAL_TRACE_BUF)
 922 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, log, CTLFLAG_VNET | CTLTYPE_STRUCT | CTLFLAG_RD,
 923     NULL, 0, sctp_sysctl_handle_trace_log, "S,sctplog", "SCTP logging (struct sctp_log)");
 924 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, clear_trace, CTLFLAG_VNET | CTLTYPE_UINT | CTLFLAG_RW,
 925     NULL, 0, sctp_sysctl_handle_trace_log_clear, "IU", "Clear SCTP Logging buffer");
 926 #endif
 927 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, udp_tunneling_port, CTLFLAG_VNET | CTLTYPE_UINT | CTLFLAG_RW,
 928     NULL, 0, sctp_sysctl_handle_udp_tunneling, "IU", SCTPCTL_UDP_TUNNELING_PORT_DESC);
 929 SCTP_UINT_SYSCTL(enable_sack_immediately, sctp_enable_sack_immediately, SCTPCTL_SACK_IMMEDIATELY_ENABLE)
 930 SCTP_UINT_SYSCTL(nat_friendly_init, sctp_inits_include_nat_friendly, SCTPCTL_NAT_FRIENDLY_INITS)
 931 SCTP_UINT_SYSCTL(vtag_time_wait, sctp_vtag_time_wait, SCTPCTL_TIME_WAIT)
 932 SCTP_UINT_SYSCTL(buffer_splitting, sctp_buffer_splitting, SCTPCTL_BUFFER_SPLITTING)
 933 SCTP_UINT_SYSCTL(initial_cwnd, sctp_initial_cwnd, SCTPCTL_INITIAL_CWND)
 934 SCTP_UINT_SYSCTL(rttvar_bw, sctp_rttvar_bw, SCTPCTL_RTTVAR_BW)
 935 SCTP_UINT_SYSCTL(rttvar_rtt, sctp_rttvar_rtt, SCTPCTL_RTTVAR_RTT)
 936 SCTP_UINT_SYSCTL(rttvar_eqret, sctp_rttvar_eqret, SCTPCTL_RTTVAR_EQRET)
 937 SCTP_UINT_SYSCTL(rttvar_steady_step, sctp_steady_step, SCTPCTL_RTTVAR_STEADYS)
 938 SCTP_UINT_SYSCTL(use_dcccecn, sctp_use_dccc_ecn, SCTPCTL_RTTVAR_DCCCECN)
 939 SCTP_UINT_SYSCTL(blackhole, sctp_blackhole, SCTPCTL_BLACKHOLE)
 940 SCTP_UINT_SYSCTL(diag_info_code, sctp_diag_info_code, SCTPCTL_DIAG_INFO_CODE)
 941 #ifdef SCTP_DEBUG
 942 SCTP_UINT_SYSCTL(debug, sctp_debug_on, SCTPCTL_DEBUG)
 943 #endif
 944 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
 945 SCTP_UINT_SYSCTL(output_unlocked, sctp_output_unlocked, SCTPCTL_OUTPUT_UNLOCKED)
 946 #endif
 947 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, stats, CTLFLAG_VNET | CTLTYPE_STRUCT | CTLFLAG_RW,
 948     NULL, 0, sctp_sysctl_handle_stats, "S,sctpstat", "SCTP statistics (struct sctp_stat)");
 949 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, assoclist, CTLFLAG_VNET | CTLTYPE_OPAQUE | CTLFLAG_RD,
 950     NULL, 0, sctp_sysctl_handle_assoclist, "S,xassoc", "List of active SCTP associations");