/*-

 * SPDX-License-Identifier: BSD-3-Clause

 *

 * Copyright (c) 2007, by Cisco Systems, Inc. All rights reserved.

 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.

 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 *

 * a) Redistributions of source code must retain the above copyright notice,

 *    this list of conditions and the following disclaimer.

 *

 * b) Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in

 *    the documentation and/or other materials provided with the distribution.

 *

 * c) Neither the name of Cisco Systems, Inc. nor the names of its

 *    contributors may be used to endorse or promote products derived

 *    from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE

 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF

 * THE POSSIBILITY OF SUCH DAMAGE.

 */

#if defined(__FreeBSD__) && !defined(__Userspace__)

#include <sys/cdefs.h>

__FBSDID("$FreeBSD$");

#endif

#include <netinet/sctp_os.h>

#include <netinet/sctp.h>

#include <netinet/sctp_constants.h>

#include <netinet/sctp_sysctl.h>

#include <netinet/sctp_pcb.h>

#include <netinet/sctputil.h>

#include <netinet/sctp_output.h>

#if defined(__FreeBSD__) && !defined(__Userspace__)

#include <sys/smp.h>

#include <sys/sysctl.h>

#endif

#if defined(__APPLE__) && !defined(__Userspace__)

#include <netinet/sctp_bsd_addr.h>

#endif

#if defined(__FreeBSD__) && !defined(__Userspace__)

FEATURE(sctp, "Stream Control Transmission Protocol");

#endif

/*

 * sysctl tunable variables

 */

void

sctp_init_sysctls(void)

{

  SCTP_BASE_SYSCTL(sctp_sendspace) = SCTPCTL_MAXDGRAM_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_recvspace) = SCTPCTL_RECVSPACE_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_auto_asconf) = SCTPCTL_AUTOASCONF_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_multiple_asconfs) = SCTPCTL_MULTIPLEASCONFS_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_ecn_enable) = SCTPCTL_ECN_ENABLE_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_pr_enable) = SCTPCTL_PR_ENABLE_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_auth_enable) = SCTPCTL_AUTH_ENABLE_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_asconf_enable) = SCTPCTL_ASCONF_ENABLE_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_reconfig_enable) = SCTPCTL_RECONFIG_ENABLE_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_nrsack_enable) = SCTPCTL_NRSACK_ENABLE_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_pktdrop_enable) = SCTPCTL_PKTDROP_ENABLE_DEFAULT;

#if !(defined(__FreeBSD__) && !defined(__Userspace__))

  SCTP_BASE_SYSCTL(sctp_no_csum_on_loopback) = SCTPCTL_LOOPBACK_NOCSUM_DEFAULT;

#endif

  SCTP_BASE_SYSCTL(sctp_peer_chunk_oh) = SCTPCTL_PEER_CHKOH_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_max_burst_default) = SCTPCTL_MAXBURST_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_fr_max_burst_default) = SCTPCTL_FRMAXBURST_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue) = SCTPCTL_MAXCHUNKS_DEFAULT;

#if defined(__Userspace__)

  if (SCTP_BASE_SYSCTL(sctp_hashtblsize) == 0) {

    SCTP_BASE_SYSCTL(sctp_hashtblsize) = SCTPCTL_TCBHASHSIZE_DEFAULT;

  }

#else

  SCTP_BASE_SYSCTL(sctp_hashtblsize) = SCTPCTL_TCBHASHSIZE_DEFAULT;

#endif

#if defined(__Userspace__)

  if (SCTP_BASE_SYSCTL(sctp_pcbtblsize) == 0) {

    SCTP_BASE_SYSCTL(sctp_pcbtblsize) = SCTPCTL_PCBHASHSIZE_DEFAULT;

  }

#else

  SCTP_BASE_SYSCTL(sctp_pcbtblsize) = SCTPCTL_PCBHASHSIZE_DEFAULT;

#endif

  SCTP_BASE_SYSCTL(sctp_min_split_point) = SCTPCTL_MIN_SPLIT_POINT_DEFAULT;

#if defined(__Userspace__)

  if (SCTP_BASE_SYSCTL(sctp_chunkscale) == 0) {

    SCTP_BASE_SYSCTL(sctp_chunkscale) = SCTPCTL_CHUNKSCALE_DEFAULT;

  }

#else

  SCTP_BASE_SYSCTL(sctp_chunkscale) = SCTPCTL_CHUNKSCALE_DEFAULT;

#endif

  SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default) = SCTPCTL_DELAYED_SACK_TIME_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_sack_freq_default) = SCTPCTL_SACK_FREQ_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_system_free_resc_limit) = SCTPCTL_SYS_RESOURCE_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_asoc_free_resc_limit) = SCTPCTL_ASOC_RESOURCE_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default) = SCTPCTL_HEARTBEAT_INTERVAL_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default) = SCTPCTL_PMTU_RAISE_TIME_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default) = SCTPCTL_SHUTDOWN_GUARD_TIME_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_secret_lifetime_default) = SCTPCTL_SECRET_LIFETIME_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_rto_max_default) = SCTPCTL_RTO_MAX_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_rto_min_default) = SCTPCTL_RTO_MIN_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_rto_initial_default) = SCTPCTL_RTO_INITIAL_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_init_rto_max_default) = SCTPCTL_INIT_RTO_MAX_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default) = SCTPCTL_VALID_COOKIE_LIFE_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_init_rtx_max_default) = SCTPCTL_INIT_RTX_MAX_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default) = SCTPCTL_ASSOC_RTX_MAX_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_path_rtx_max_default) = SCTPCTL_PATH_RTX_MAX_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_path_pf_threshold) = SCTPCTL_PATH_PF_THRESHOLD_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_add_more_threshold) = SCTPCTL_ADD_MORE_ON_OUTPUT_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_nr_incoming_streams_default) = SCTPCTL_INCOMING_STREAMS_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default) = SCTPCTL_OUTGOING_STREAMS_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_cmt_on_off) = SCTPCTL_CMT_ON_OFF_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_cmt_use_dac) = SCTPCTL_CMT_USE_DAC_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_use_cwnd_based_maxburst) = SCTPCTL_CWND_MAXBURST_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_nat_friendly) = SCTPCTL_NAT_FRIENDLY_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_L2_abc_variable) = SCTPCTL_ABC_L_VAR_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_mbuf_threshold_count) = SCTPCTL_MAX_CHAINED_MBUFS_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_do_drain) = SCTPCTL_DO_SCTP_DRAIN_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_hb_maxburst) = SCTPCTL_HB_MAX_BURST_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_abort_if_one_2_one_hits_limit) = SCTPCTL_ABORT_AT_LIMIT_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_min_residual) = SCTPCTL_MIN_RESIDUAL_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_max_retran_chunk) = SCTPCTL_MAX_RETRAN_CHUNK_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_logging_level) = SCTPCTL_LOGGING_LEVEL_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_default_cc_module) = SCTPCTL_DEFAULT_CC_MODULE_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_default_ss_module) = SCTPCTL_DEFAULT_SS_MODULE_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_default_frag_interleave) = SCTPCTL_DEFAULT_FRAG_INTERLEAVE_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_mobility_base) = SCTPCTL_MOBILITY_BASE_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) = SCTPCTL_MOBILITY_FASTHANDOFF_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_vtag_time_wait) = SCTPCTL_TIME_WAIT_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_buffer_splitting) = SCTPCTL_BUFFER_SPLITTING_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_initial_cwnd) = SCTPCTL_INITIAL_CWND_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_rttvar_bw) = SCTPCTL_RTTVAR_BW_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_rttvar_rtt) = SCTPCTL_RTTVAR_RTT_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_rttvar_eqret) = SCTPCTL_RTTVAR_EQRET_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_steady_step) = SCTPCTL_RTTVAR_STEADYS_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_use_dccc_ecn) = SCTPCTL_RTTVAR_DCCCECN_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_blackhole) = SCTPCTL_BLACKHOLE_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_sendall_limit) = SCTPCTL_SENDALL_LIMIT_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_diag_info_code) = SCTPCTL_DIAG_INFO_CODE_DEFAULT;

#if defined(SCTP_LOCAL_TRACE_BUF)

#if defined(_WIN32) && !defined(__Userspace__)

  /* On Windows, the resource for global variables is limited. */

  MALLOC(SCTP_BASE_SYSCTL(sctp_log), struct sctp_log *, sizeof(struct sctp_log), M_SYSCTL, M_ZERO);

#else

  memset(&SCTP_BASE_SYSCTL(sctp_log), 0, sizeof(struct sctp_log));

#endif

#endif

  SCTP_BASE_SYSCTL(sctp_udp_tunneling_port) = SCTPCTL_UDP_TUNNELING_PORT_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_enable_sack_immediately) = SCTPCTL_SACK_IMMEDIATELY_ENABLE_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_inits_include_nat_friendly) = SCTPCTL_NAT_FRIENDLY_INITS_DEFAULT;

#if defined(SCTP_DEBUG)

  SCTP_BASE_SYSCTL(sctp_debug_on) = SCTPCTL_DEBUG_DEFAULT;

#endif

#if defined(__APPLE__) && !defined(__Userspace__)

  SCTP_BASE_SYSCTL(sctp_ignore_vmware_interfaces) = SCTPCTL_IGNORE_VMWARE_INTERFACES_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_main_timer) = SCTPCTL_MAIN_TIMER_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_addr_watchdog_limit) = SCTPCTL_ADDR_WATCHDOG_LIMIT_DEFAULT;

  SCTP_BASE_SYSCTL(sctp_vtag_watchdog_limit) = SCTPCTL_VTAG_WATCHDOG_LIMIT_DEFAULT;

#endif

#if defined(__APPLE__) && !defined(__Userspace__)

  SCTP_BASE_SYSCTL(sctp_output_unlocked) = SCTPCTL_OUTPUT_UNLOCKED_DEFAULT;

#endif

}

#if defined(_WIN32) && !defined(__Userspace__)

void

sctp_finish_sysctls()

{

#if defined(SCTP_LOCAL_TRACE_BUF)

  if (SCTP_BASE_SYSCTL(sctp_log) != NULL) {

    FREE(SCTP_BASE_SYSCTL(sctp_log), M_SYSCTL);

    SCTP_BASE_SYSCTL(sctp_log) = NULL;

  }

#endif

}

#endif

#if !defined(__Userspace__)

/* It returns an upper limit. No filtering is done here */

static unsigned int

sctp_sysctl_number_of_addresses(struct sctp_inpcb *inp)

{

  unsigned int cnt;

  struct sctp_vrf *vrf;

  struct sctp_ifn *sctp_ifn;

  struct sctp_ifa *sctp_ifa;

  struct sctp_laddr *laddr;

  cnt = 0;

  /* neither Mac OS X nor FreeBSD support multiple routing functions */

  if ((vrf = sctp_find_vrf(inp->def_vrf_id)) == NULL) {

    return (0);

  }

  if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {

    LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {

      LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {

        switch (sctp_ifa->address.sa.sa_family) {

#ifdef INET

        case AF_INET:

#endif

#ifdef INET6

        case AF_INET6:

#endif

          cnt++;

          break;

        default:

          break;

        }

      }

    }

  } else {

    LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {

      switch (laddr->ifa->address.sa.sa_family) {

#ifdef INET

      case AF_INET:

#endif

#ifdef INET6

      case AF_INET6:

#endif

        cnt++;

        break;

      default:

        break;

      }

    }

  }

  return (cnt);

}

static int

sctp_sysctl_copy_out_local_addresses(struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sysctl_req *req)

{

  struct sctp_ifn *sctp_ifn;

  struct sctp_ifa *sctp_ifa;

  int loopback_scope;

#ifdef INET

  int ipv4_local_scope;

  int ipv4_addr_legal;

#endif

#ifdef INET6

  int local_scope, site_scope;

  int ipv6_addr_legal;

#endif

#if defined(__Userspace__)

  int conn_addr_legal;

#endif

  struct sctp_vrf *vrf;

  struct xsctp_laddr xladdr;

  struct sctp_laddr *laddr;

  int error;

  /* Turn on all the appropriate scope */

  if (stcb != NULL) {

    /* use association specific values */

    loopback_scope = stcb->asoc.scope.loopback_scope;

#ifdef INET

    ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;

    ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;

#endif

#ifdef INET6

    local_scope = stcb->asoc.scope.local_scope;

    site_scope = stcb->asoc.scope.site_scope;

    ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;

#endif

#if defined(__Userspace__)

    conn_addr_legal = stcb->asoc.scope.conn_addr_legal;

#endif

  } else {

    /* Use generic values for endpoints. */

    loopback_scope = 1;

#ifdef INET

    ipv4_local_scope = 1;

#endif

#ifdef INET6

    local_scope = 1;

    site_scope = 1;

#endif

    if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {

#ifdef INET6

      ipv6_addr_legal = 1;

#endif

#ifdef INET

      if (SCTP_IPV6_V6ONLY(inp)) {

        ipv4_addr_legal = 0;

      } else {

        ipv4_addr_legal = 1;

      }

#endif

#if defined(__Userspace__)

      conn_addr_legal = 0;

#endif

    } else {

#ifdef INET6

      ipv6_addr_legal = 0;

#endif

#if defined(__Userspace__)

      if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_CONN) {

        conn_addr_legal = 1;

#ifdef INET

        ipv4_addr_legal = 0;

#endif

      } else {

        conn_addr_legal = 0;

#ifdef INET

        ipv4_addr_legal = 1;

#endif

      }

#else

#ifdef INET

      ipv4_addr_legal = 1;

#endif

#endif

    }

  }

  /* Neither Mac OS X nor FreeBSD support multiple routing functions. */

  if ((vrf = sctp_find_vrf(inp->def_vrf_id)) == NULL) {

    SCTP_INP_RUNLOCK(inp);

    SCTP_INP_INFO_RUNLOCK();

    return (ENOENT);

  }

  if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {

    LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {

      if ((loopback_scope == 0) && SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {

        /* Skip loopback if loopback_scope not set. */

        continue;

      }

      LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {

        if (stcb != NULL) {

          /*

           * Ignore if blacklisted at

           * association level.

           */

          if (sctp_is_addr_restricted(stcb, sctp_ifa)) {

            continue;

          }

        }

        switch (sctp_ifa->address.sa.sa_family) {

#ifdef INET

        case AF_INET:

          if (ipv4_addr_legal) {

            struct sockaddr_in *sin;

            sin = &sctp_ifa->address.sin;

            if (sin->sin_addr.s_addr == 0) {

              continue;

            }

#if defined(__FreeBSD__) && !defined(__Userspace__)

            if (prison_check_ip4(inp->ip_inp.inp.inp_cred,

                                 &sin->sin_addr) != 0) {

              continue;

            }

#endif

            if ((ipv4_local_scope == 0) && (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {

              continue;

            }

          } else {

            continue;

          }

          break;

#endif

#ifdef INET6

        case AF_INET6:

          if (ipv6_addr_legal) {

            struct sockaddr_in6 *sin6;

            sin6 = &sctp_ifa->address.sin6;

            if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {

              continue;

            }

#if defined(__FreeBSD__) && !defined(__Userspace__)

            if (prison_check_ip6(inp->ip_inp.inp.inp_cred,

                                 &sin6->sin6_addr) != 0) {

              continue;

            }

#endif

            if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {

              if (local_scope == 0) {

                continue;

              }

            }

            if ((site_scope == 0) && (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {

              continue;

            }

          } else {

            continue;

          }

          break;

#endif

#if defined(__Userspace__)

        case AF_CONN:

          if (!conn_addr_legal) {

            continue;

          }

          break;

#endif

        default:

          continue;

        }

        memset((void *)&xladdr, 0, sizeof(struct xsctp_laddr));

        memcpy((void *)&xladdr.address, (const void *)&sctp_ifa->address, sizeof(union sctp_sockstore));

        SCTP_INP_RUNLOCK(inp);

        SCTP_INP_INFO_RUNLOCK();

        error = SYSCTL_OUT(req, &xladdr, sizeof(struct xsctp_laddr));

        if (error != 0) {

          return (error);

        } else {

          SCTP_INP_INFO_RLOCK();

          SCTP_INP_RLOCK(inp);

        }

      }

    }

  } else {

    LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {

      /* ignore if blacklisted at association level */

      if (stcb != NULL && sctp_is_addr_restricted(stcb, laddr->ifa))

        continue;

      memset((void *)&xladdr, 0, sizeof(struct xsctp_laddr));

      memcpy((void *)&xladdr.address, (const void *)&laddr->ifa->address, sizeof(union sctp_sockstore));

      xladdr.start_time.tv_sec = (uint32_t)laddr->start_time.tv_sec;

      xladdr.start_time.tv_usec = (uint32_t)laddr->start_time.tv_usec;

      SCTP_INP_RUNLOCK(inp);

      SCTP_INP_INFO_RUNLOCK();

      error = SYSCTL_OUT(req, &xladdr, sizeof(struct xsctp_laddr));

      if (error != 0) {

        return (error);

      } else {

        SCTP_INP_INFO_RLOCK();

        SCTP_INP_RLOCK(inp);

      }

    }

  }

  memset((void *)&xladdr, 0, sizeof(struct xsctp_laddr));

  xladdr.last = 1;

  SCTP_INP_RUNLOCK(inp);

  SCTP_INP_INFO_RUNLOCK();

  error = SYSCTL_OUT(req, &xladdr, sizeof(struct xsctp_laddr));

  if (error != 0) {

    return (error);

  } else {

    SCTP_INP_INFO_RLOCK();

    SCTP_INP_RLOCK(inp);

    return (0);

  }

}

/*

 * sysctl functions

 */

#if defined(__APPLE__) && !defined(__Userspace__)

static int

sctp_sysctl_handle_assoclist SYSCTL_HANDLER_ARGS

{

#pragma unused(oidp, arg1, arg2)

#else

static int

sctp_sysctl_handle_assoclist(SYSCTL_HANDLER_ARGS)

{

#endif

  unsigned int number_of_endpoints;

  unsigned int number_of_local_addresses;

  unsigned int number_of_associations;

  unsigned int number_of_remote_addresses;

  unsigned int n;

  int error;

  struct sctp_inpcb *inp;

  struct sctp_tcb *stcb;

  struct sctp_nets *net;

  struct xsctp_inpcb xinpcb;

  struct xsctp_tcb xstcb;

  struct xsctp_raddr xraddr;

  struct socket *so;

  number_of_endpoints = 0;

  number_of_local_addresses = 0;

  number_of_associations = 0;

  number_of_remote_addresses = 0;

  SCTP_INP_INFO_RLOCK();

#if defined(__APPLE__) && !defined(__Userspace__)

  if (req->oldptr == USER_ADDR_NULL) {

#else

  if (req->oldptr == NULL) {

#endif

    LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {

      SCTP_INP_RLOCK(inp);

      number_of_endpoints++;

      number_of_local_addresses += sctp_sysctl_number_of_addresses(inp);

      LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {

        number_of_associations++;

        number_of_local_addresses += sctp_sysctl_number_of_addresses(inp);

        TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {

          number_of_remote_addresses++;

        }

      }

      SCTP_INP_RUNLOCK(inp);

    }

    SCTP_INP_INFO_RUNLOCK();

    n = (number_of_endpoints + 1) * sizeof(struct xsctp_inpcb) +

        (number_of_local_addresses + number_of_endpoints + number_of_associations) * sizeof(struct xsctp_laddr) +

        (number_of_associations + number_of_endpoints) * sizeof(struct xsctp_tcb) +

        (number_of_remote_addresses + number_of_associations) * sizeof(struct xsctp_raddr);

    /* request some more memory than needed */

#if !(defined(_WIN32) && !defined(__Userspace__))

    req->oldidx = (n + n / 8);

#else

    req->dataidx = (n + n / 8);

#endif

    return (0);

  }

#if defined(__APPLE__) && !defined(__Userspace__)

  if (req->newptr != USER_ADDR_NULL) {

#else

  if (req->newptr != NULL) {

#endif

    SCTP_INP_INFO_RUNLOCK();

    SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_SYSCTL, EPERM);

    return (EPERM);

  }

  memset(&xinpcb, 0, sizeof(xinpcb));

  memset(&xstcb, 0, sizeof(xstcb));

  memset(&xraddr, 0, sizeof(xraddr));

  LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {

    SCTP_INP_RLOCK(inp);

    if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {

      /* if its allgone it is being freed - skip it  */

      goto skip;

    }

    xinpcb.last = 0;

    xinpcb.local_port = ntohs(inp->sctp_lport);

    xinpcb.flags = inp->sctp_flags;

    xinpcb.features = inp->sctp_features;

    xinpcb.total_sends = inp->total_sends;

    xinpcb.total_recvs = inp->total_recvs;

    xinpcb.total_nospaces = inp->total_nospaces;

    xinpcb.fragmentation_point = inp->sctp_frag_point;

#if defined(__FreeBSD__) && !defined(__Userspace__)

    xinpcb.socket = (uintptr_t)inp->sctp_socket;

#else

    xinpcb.socket = inp->sctp_socket;

#endif

    so = inp->sctp_socket;

    if ((so == NULL) ||

        (!SCTP_IS_LISTENING(inp)) ||

        (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {

      xinpcb.qlen = 0;

      xinpcb.maxqlen = 0;

    } else {

#if defined(__FreeBSD__) && !defined(__Userspace__)

      xinpcb.qlen = so->sol_qlen;

      xinpcb.qlen_old = so->sol_qlen > USHRT_MAX ?

          USHRT_MAX : (uint16_t) so->sol_qlen;

      xinpcb.maxqlen = so->sol_qlimit;

      xinpcb.maxqlen_old = so->sol_qlimit > USHRT_MAX ?

          USHRT_MAX : (uint16_t) so->sol_qlimit;

#else

      xinpcb.qlen = so->so_qlen;

      xinpcb.maxqlen = so->so_qlimit;

#endif

    }

    SCTP_INP_INCR_REF(inp);

    SCTP_INP_RUNLOCK(inp);

    SCTP_INP_INFO_RUNLOCK();

    error = SYSCTL_OUT(req, &xinpcb, sizeof(struct xsctp_inpcb));

    if (error) {

      SCTP_INP_DECR_REF(inp);

      return (error);

    }

    SCTP_INP_INFO_RLOCK();

    SCTP_INP_RLOCK(inp);

    error = sctp_sysctl_copy_out_local_addresses(inp, NULL, req);

    if (error) {

      SCTP_INP_DECR_REF(inp);

      return (error);

    }

    LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {

      SCTP_TCB_LOCK(stcb);

      atomic_add_int(&stcb->asoc.refcnt, 1);

      SCTP_TCB_UNLOCK(stcb);

      xstcb.last = 0;

      xstcb.local_port = ntohs(inp->sctp_lport);

      xstcb.remote_port = ntohs(stcb->rport);

      if (stcb->asoc.primary_destination != NULL)

        xstcb.primary_addr = stcb->asoc.primary_destination->ro._l_addr;

      xstcb.heartbeat_interval = stcb->asoc.heart_beat_delay;

      xstcb.state = (uint32_t)sctp_map_assoc_state(stcb->asoc.state);

      xstcb.assoc_id = sctp_get_associd(stcb);

      xstcb.peers_rwnd = stcb->asoc.peers_rwnd;

      xstcb.in_streams = stcb->asoc.streamincnt;

      xstcb.out_streams = stcb->asoc.streamoutcnt;

      xstcb.max_nr_retrans = stcb->asoc.overall_error_count;

      xstcb.primary_process = 0; /* not really supported yet */

      xstcb.T1_expireries = stcb->asoc.timoinit + stcb->asoc.timocookie;

      xstcb.T2_expireries = stcb->asoc.timoshutdown + stcb->asoc.timoshutdownack;

      xstcb.retransmitted_tsns = stcb->asoc.marked_retrans;

      xstcb.start_time.tv_sec = (uint32_t)stcb->asoc.start_time.tv_sec;

      xstcb.start_time.tv_usec = (uint32_t)stcb->asoc.start_time.tv_usec;

      xstcb.discontinuity_time.tv_sec = (uint32_t)stcb->asoc.discontinuity_time.tv_sec;

      xstcb.discontinuity_time.tv_usec = (uint32_t)stcb->asoc.discontinuity_time.tv_usec;

      xstcb.total_sends = stcb->total_sends;

      xstcb.total_recvs = stcb->total_recvs;

      xstcb.local_tag = stcb->asoc.my_vtag;

      xstcb.remote_tag = stcb->asoc.peer_vtag;

      xstcb.initial_tsn = stcb->asoc.init_seq_number;

      xstcb.highest_tsn = stcb->asoc.sending_seq - 1;

      xstcb.cumulative_tsn = stcb->asoc.last_acked_seq;

      xstcb.cumulative_tsn_ack = stcb->asoc.cumulative_tsn;

      xstcb.mtu = stcb->asoc.smallest_mtu;

      xstcb.refcnt = stcb->asoc.refcnt;

      SCTP_INP_RUNLOCK(inp);

      SCTP_INP_INFO_RUNLOCK();

      error = SYSCTL_OUT(req, &xstcb, sizeof(struct xsctp_tcb));

      if (error) {

        SCTP_INP_DECR_REF(inp);

        atomic_subtract_int(&stcb->asoc.refcnt, 1);

        return (error);

      }

      SCTP_INP_INFO_RLOCK();

      SCTP_INP_RLOCK(inp);

      error = sctp_sysctl_copy_out_local_addresses(inp, stcb, req);

      if (error) {

        SCTP_INP_DECR_REF(inp);

        atomic_subtract_int(&stcb->asoc.refcnt, 1);

        return (error);

      }

      TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {

        xraddr.last = 0;

        xraddr.address = net->ro._l_addr;

        xraddr.active = ((net->dest_state & SCTP_ADDR_REACHABLE) == SCTP_ADDR_REACHABLE);

        xraddr.confirmed = ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0);

        xraddr.heartbeat_enabled = ((net->dest_state & SCTP_ADDR_NOHB) == 0);

        xraddr.potentially_failed = ((net->dest_state & SCTP_ADDR_PF) == SCTP_ADDR_PF);

        xraddr.rto = net->RTO;

        xraddr.max_path_rtx = net->failure_threshold;

        xraddr.rtx = net->marked_retrans;

        xraddr.error_counter = net->error_count;

        xraddr.cwnd = net->cwnd;

        xraddr.flight_size = net->flight_size;

        xraddr.mtu = net->mtu;

        xraddr.rtt = net->rtt / 1000;

        xraddr.heartbeat_interval = net->heart_beat_delay;

        xraddr.ssthresh = net->ssthresh;

        xraddr.encaps_port = net->port;

        if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {

          xraddr.state = SCTP_UNCONFIRMED;

        } else if (net->dest_state & SCTP_ADDR_REACHABLE) {

          xraddr.state = SCTP_ACTIVE;

        } else {

          xraddr.state = SCTP_INACTIVE;

        }

        xraddr.start_time.tv_sec = (uint32_t)net->start_time.tv_sec;

        xraddr.start_time.tv_usec = (uint32_t)net->start_time.tv_usec;

        SCTP_INP_RUNLOCK(inp);

        SCTP_INP_INFO_RUNLOCK();

        error = SYSCTL_OUT(req, &xraddr, sizeof(struct xsctp_raddr));

        if (error) {

          SCTP_INP_DECR_REF(inp);

          atomic_subtract_int(&stcb->asoc.refcnt, 1);

          return (error);

        }

        SCTP_INP_INFO_RLOCK();

        SCTP_INP_RLOCK(inp);

      }

      atomic_subtract_int(&stcb->asoc.refcnt, 1);

      memset((void *)&xraddr, 0, sizeof(struct xsctp_raddr));

      xraddr.last = 1;

      SCTP_INP_RUNLOCK(inp);

      SCTP_INP_INFO_RUNLOCK();

      error = SYSCTL_OUT(req, &xraddr, sizeof(struct xsctp_raddr));

      if (error) {

        SCTP_INP_DECR_REF(inp);

        return (error);

      }

      SCTP_INP_INFO_RLOCK();

      SCTP_INP_RLOCK(inp);

    }

    SCTP_INP_DECR_REF(inp);

    SCTP_INP_RUNLOCK(inp);

    SCTP_INP_INFO_RUNLOCK();

    memset((void *)&xstcb, 0, sizeof(struct xsctp_tcb));

    xstcb.last = 1;

    error = SYSCTL_OUT(req, &xstcb, sizeof(struct xsctp_tcb));

    if (error) {

      return (error);

    }

skip:

    SCTP_INP_INFO_RLOCK();

  }

  SCTP_INP_INFO_RUNLOCK();

  memset((void *)&xinpcb, 0, sizeof(struct xsctp_inpcb));

  xinpcb.last = 1;

  error = SYSCTL_OUT(req, &xinpcb, sizeof(struct xsctp_inpcb));

  return (error);

}

#if defined(__APPLE__) && !defined(__Userspace__)

static int

sctp_sysctl_handle_udp_tunneling SYSCTL_HANDLER_ARGS

{

#pragma unused(arg1, arg2)

#else

static int

sctp_sysctl_handle_udp_tunneling(SYSCTL_HANDLER_ARGS)

{

#endif

  int error;

  uint32_t old, new;

  SCTP_INP_INFO_RLOCK();

  old = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);

  SCTP_INP_INFO_RUNLOCK();

  new = old;

  error = sysctl_handle_int(oidp, &new, 0, req);

  if ((error == 0) &&

#if defined(__APPLE__) && !defined(__Userspace__)

      (req->newptr != USER_ADDR_NULL)) {

#else

      (req->newptr != NULL)) {

#endif

#if defined(_WIN32) && !defined(__Userspace__)

    SCTP_INP_INFO_WLOCK();

    sctp_over_udp_restart();

    SCTP_INP_INFO_WUNLOCK();

#else

#if (SCTPCTL_UDP_TUNNELING_PORT_MIN == 0)

    if (new > SCTPCTL_UDP_TUNNELING_PORT_MAX) {

#else

    if ((new < SCTPCTL_UDP_TUNNELING_PORT_MIN) ||

        (new > SCTPCTL_UDP_TUNNELING_PORT_MAX)) {

#endif

      error = EINVAL;

    } else {

      SCTP_INP_INFO_WLOCK();

      SCTP_BASE_SYSCTL(sctp_udp_tunneling_port) = new;

      if (old != 0) {

        sctp_over_udp_stop();

      }

      if (new != 0) {

        error = sctp_over_udp_start();

      }

      SCTP_INP_INFO_WUNLOCK();

    }

#endif

  }

  return (error);

}

#if defined(__APPLE__) && !defined(__Userspace__)

int sctp_is_vmware_interface(struct ifnet *);

static int

sctp_sysctl_handle_vmware_interfaces SYSCTL_HANDLER_ARGS

{

#pragma unused(arg1, arg2)

  int error;

  uint32_t old, new;

  old = SCTP_BASE_SYSCTL(sctp_ignore_vmware_interfaces);

  new = old;

  error = sysctl_handle_int(oidp, &new, 0, req);

  if ((error == 0) && (req->newptr != USER_ADDR_NULL)) {

    if ((new < SCTPCTL_IGNORE_VMWARE_INTERFACES_MIN) ||

        (new > SCTPCTL_IGNORE_VMWARE_INTERFACES_MAX)) {

      error = EINVAL;

    } else {

      if ((old == 1) && (new == 0)) {

        sctp_add_or_del_interfaces(sctp_is_vmware_interface, 1);

      }

      if ((old == 0) && (new == 1)) {

        sctp_add_or_del_interfaces(sctp_is_vmware_interface, 0);

      }

      if (old != new) {

        SCTP_BASE_SYSCTL(sctp_ignore_vmware_interfaces) = new;

      }

    }

  }

  return (error);

}

#endif

#if defined(__APPLE__) && !defined(__Userspace__)

static int

sctp_sysctl_handle_auth SYSCTL_HANDLER_ARGS

{

#pragma unused(arg1, arg2)

#else

static int

sctp_sysctl_handle_auth(SYSCTL_HANDLER_ARGS)

{

#endif

  int error;

  uint32_t new;

  new = SCTP_BASE_SYSCTL(sctp_auth_enable);

  error = sysctl_handle_int(oidp, &new, 0, req);

  if ((error == 0) &&

#if defined(__APPLE__) && !defined(__Userspace__)

      (req->newptr != USER_ADDR_NULL)) {

#else

      (req->newptr != NULL)) {

#endif

#if (SCTPCTL_AUTH_ENABLE_MIN == 0)

    if ((new > SCTPCTL_AUTH_ENABLE_MAX) ||

        ((new == 0) && (SCTP_BASE_SYSCTL(sctp_asconf_enable) == 1))) {

#else

    if ((new < SCTPCTL_AUTH_ENABLE_MIN) ||

        (new > SCTPCTL_AUTH_ENABLE_MAX) ||

        ((new == 0) && (SCTP_BASE_SYSCTL(sctp_asconf_enable) == 1))) {

#endif

      error = EINVAL;

    } else {

      SCTP_BASE_SYSCTL(sctp_auth_enable) = new;

    }

  }

  return (error);

}

#if defined(__APPLE__) && !defined(__Userspace__)

static int

sctp_sysctl_handle_asconf SYSCTL_HANDLER_ARGS

{

#pragma unused(arg1, arg2)

#else

static int

sctp_sysctl_handle_asconf(SYSCTL_HANDLER_ARGS)

{

#endif

  int error;

  uint32_t new;

  new = SCTP_BASE_SYSCTL(sctp_asconf_enable);

  error = sysctl_handle_int(oidp, &new, 0, req);

  if ((error == 0) &&

#if defined(__APPLE__) && !defined(__Userspace__)

      (req->newptr != USER_ADDR_NULL)) {

#else

      (req->newptr != NULL)) {

#endif

#if (SCTPCTL_ASCONF_ENABLE_MIN == 0)

    if ((new > SCTPCTL_ASCONF_ENABLE_MAX) ||

        ((new == 1) && (SCTP_BASE_SYSCTL(sctp_auth_enable) == 0))) {

#else

    if ((new < SCTPCTL_ASCONF_ENABLE_MIN) ||

        (new > SCTPCTL_ASCONF_ENABLE_MAX) ||

        ((new == 1) && (SCTP_BASE_SYSCTL(sctp_auth_enable) == 0))) {

#endif

      error = EINVAL;

    } else {

      SCTP_BASE_SYSCTL(sctp_asconf_enable) = new;

    }

  }

  return (error);

}

#if defined(__APPLE__) && !defined(__Userspace__)

static int

sctp_sysctl_handle_stats SYSCTL_HANDLER_ARGS

{

#pragma unused(oidp, arg1, arg2)

#else

static int

sctp_sysctl_handle_stats(SYSCTL_HANDLER_ARGS)

{

#endif

  int error;

#if defined(__FreeBSD__) && !defined(__Userspace__)

#if defined(SMP) && defined(SCTP_USE_PERCPU_STAT)

  struct sctpstat *sarry;

  struct sctpstat sb;

  int cpu;

#endif

  struct sctpstat sb_temp;

#endif

#if defined(__APPLE__) && !defined(__Userspace__)

  if ((req->newptr != USER_ADDR_NULL) &&

#else

  if ((req->newptr != NULL) &&

#endif

      (req->newlen != sizeof(struct sctpstat))) {

    return (EINVAL);

  }

#if defined(__FreeBSD__) && !defined(__Userspace__)

  memset(&sb_temp, 0, sizeof(struct sctpstat));

  if (req->newptr != NULL) {

    error = SYSCTL_IN(req, &sb_temp, sizeof(struct sctpstat));

    if (error != 0) {

      return (error);

    }

  }

#if defined(SMP) && defined(SCTP_USE_PERCPU_STAT)

  memset(&sb, 0, sizeof(sb));

  for (cpu = 0; cpu < mp_maxid; cpu++) {

    sarry = &SCTP_BASE_STATS[cpu];

    if (sarry->sctps_discontinuitytime.tv_sec > sb.sctps_discontinuitytime.tv_sec) {

      sb.sctps_discontinuitytime.tv_sec = sarry->sctps_discontinuitytime.tv_sec;

      sb.sctps_discontinuitytime.tv_usec = sarry->sctps_discontinuitytime.tv_usec;

    }

    sb.sctps_currestab += sarry->sctps_currestab;

    sb.sctps_activeestab += sarry->sctps_activeestab;

    sb.sctps_restartestab += sarry->sctps_restartestab;

    sb.sctps_collisionestab += sarry->sctps_collisionestab;

    sb.sctps_passiveestab += sarry->sctps_passiveestab;

    sb.sctps_aborted += sarry->sctps_aborted;

    sb.sctps_shutdown += sarry->sctps_shutdown;

    sb.sctps_outoftheblue += sarry->sctps_outoftheblue;

    sb.sctps_checksumerrors += sarry->sctps_checksumerrors;

    sb.sctps_outcontrolchunks += sarry->sctps_outcontrolchunks;

    sb.sctps_outorderchunks += sarry->sctps_outorderchunks;

    sb.sctps_outunorderchunks += sarry->sctps_outunorderchunks;

    sb.sctps_incontrolchunks += sarry->sctps_incontrolchunks;

    sb.sctps_inorderchunks += sarry->sctps_inorderchunks;

    sb.sctps_inunorderchunks += sarry->sctps_inunorderchunks;

    sb.sctps_fragusrmsgs += sarry->sctps_fragusrmsgs;

    sb.sctps_reasmusrmsgs += sarry->sctps_reasmusrmsgs;

    sb.sctps_outpackets += sarry->sctps_outpackets;

    sb.sctps_inpackets += sarry->sctps_inpackets;

    sb.sctps_recvpackets += sarry->sctps_recvpackets;

    sb.sctps_recvdatagrams += sarry->sctps_recvdatagrams;

    sb.sctps_recvpktwithdata += sarry->sctps_recvpktwithdata;

    sb.sctps_recvsacks += sarry->sctps_recvsacks;

    sb.sctps_recvdata += sarry->sctps_recvdata;

    sb.sctps_recvdupdata += sarry->sctps_recvdupdata;

    sb.sctps_recvheartbeat += sarry->sctps_recvheartbeat;

    sb.sctps_recvheartbeatack += sarry->sctps_recvheartbeatack;

    sb.sctps_recvecne += sarry->sctps_recvecne;

    sb.sctps_recvauth += sarry->sctps_recvauth;

    sb.sctps_recvauthmissing += sarry->sctps_recvauthmissing;

    sb.sctps_recvivalhmacid += sarry->sctps_recvivalhmacid;

    sb.sctps_recvivalkeyid += sarry->sctps_recvivalkeyid;

    sb.sctps_recvauthfailed += sarry->sctps_recvauthfailed;

    sb.sctps_recvexpress += sarry->sctps_recvexpress;

    sb.sctps_recvexpressm += sarry->sctps_recvexpressm;

    sb.sctps_recvswcrc += sarry->sctps_recvswcrc;

    sb.sctps_recvhwcrc += sarry->sctps_recvhwcrc;

    sb.sctps_sendpackets += sarry->sctps_sendpackets;

    sb.sctps_sendsacks += sarry->sctps_sendsacks;

    sb.sctps_senddata += sarry->sctps_senddata;

    sb.sctps_sendretransdata += sarry->sctps_sendretransdata;

    sb.sctps_sendfastretrans += sarry->sctps_sendfastretrans;

    sb.sctps_sendmultfastretrans += sarry->sctps_sendmultfastretrans;

    sb.sctps_sendheartbeat += sarry->sctps_sendheartbeat;

    sb.sctps_sendecne += sarry->sctps_sendecne;

    sb.sctps_sendauth += sarry->sctps_sendauth;

    sb.sctps_senderrors += sarry->sctps_senderrors;

    sb.sctps_sendswcrc += sarry->sctps_sendswcrc;

    sb.sctps_sendhwcrc += sarry->sctps_sendhwcrc;

    sb.sctps_pdrpfmbox += sarry->sctps_pdrpfmbox;

    sb.sctps_pdrpfehos += sarry->sctps_pdrpfehos;

    sb.sctps_pdrpmbda += sarry->sctps_pdrpmbda;

    sb.sctps_pdrpmbct += sarry->sctps_pdrpmbct;

    sb.sctps_pdrpbwrpt += sarry->sctps_pdrpbwrpt;

    sb.sctps_pdrpcrupt += sarry->sctps_pdrpcrupt;

    sb.sctps_pdrpnedat += sarry->sctps_pdrpnedat;

    sb.sctps_pdrppdbrk += sarry->sctps_pdrppdbrk;

    sb.sctps_pdrptsnnf += sarry->sctps_pdrptsnnf;

    sb.sctps_pdrpdnfnd += sarry->sctps_pdrpdnfnd;

    sb.sctps_pdrpdiwnp += sarry->sctps_pdrpdiwnp;

    sb.sctps_pdrpdizrw += sarry->sctps_pdrpdizrw;

    sb.sctps_pdrpbadd += sarry->sctps_pdrpbadd;

    sb.sctps_pdrpmark += sarry->sctps_pdrpmark;

    sb.sctps_timoiterator += sarry->sctps_timoiterator;

    sb.sctps_timodata += sarry->sctps_timodata;

    sb.sctps_timowindowprobe += sarry->sctps_timowindowprobe;

    sb.sctps_timoinit += sarry->sctps_timoinit;

    sb.sctps_timosack += sarry->sctps_timosack;

    sb.sctps_timoshutdown += sarry->sctps_timoshutdown;

    sb.sctps_timoheartbeat += sarry->sctps_timoheartbeat;

    sb.sctps_timocookie += sarry->sctps_timocookie;

    sb.sctps_timosecret += sarry->sctps_timosecret;

    sb.sctps_timopathmtu += sarry->sctps_timopathmtu;

    sb.sctps_timoshutdownack += sarry->sctps_timoshutdownack;

    sb.sctps_timoshutdownguard += sarry->sctps_timoshutdownguard;

    sb.sctps_timostrmrst += sarry->sctps_timostrmrst;

    sb.sctps_timoearlyfr += sarry->sctps_timoearlyfr;

    sb.sctps_timoasconf += sarry->sctps_timoasconf;

    sb.sctps_timodelprim += sarry->sctps_timodelprim;

    sb.sctps_timoautoclose += sarry->sctps_timoautoclose;

    sb.sctps_timoassockill += sarry->sctps_timoassockill;

    sb.sctps_timoinpkill += sarry->sctps_timoinpkill;

    sb.sctps_hdrops += sarry->sctps_hdrops;

    sb.sctps_badsum += sarry->sctps_badsum;

    sb.sctps_noport += sarry->sctps_noport;

    sb.sctps_badvtag += sarry->sctps_badvtag;

    sb.sctps_badsid += sarry->sctps_badsid;

    sb.sctps_nomem += sarry->sctps_nomem;

    sb.sctps_fastretransinrtt += sarry->sctps_fastretransinrtt;

    sb.sctps_markedretrans += sarry->sctps_markedretrans;

    sb.sctps_naglesent += sarry->sctps_naglesent;

    sb.sctps_naglequeued += sarry->sctps_naglequeued;

    sb.sctps_maxburstqueued += sarry->sctps_maxburstqueued;

    sb.sctps_ifnomemqueued += sarry->sctps_ifnomemqueued;

    sb.sctps_windowprobed += sarry->sctps_windowprobed;

    sb.sctps_lowlevelerr += sarry->sctps_lowlevelerr;

    sb.sctps_lowlevelerrusr += sarry->sctps_lowlevelerrusr;

    sb.sctps_datadropchklmt += sarry->sctps_datadropchklmt;

    sb.sctps_datadroprwnd += sarry->sctps_datadroprwnd;

    sb.sctps_ecnereducedcwnd += sarry->sctps_ecnereducedcwnd;

    sb.sctps_vtagexpress += sarry->sctps_vtagexpress;

    sb.sctps_vtagbogus += sarry->sctps_vtagbogus;

    sb.sctps_primary_randry += sarry->sctps_primary_randry;

    sb.sctps_cmt_randry += sarry->sctps_cmt_randry;

    sb.sctps_slowpath_sack += sarry->sctps_slowpath_sack;

    sb.sctps_wu_sacks_sent += sarry->sctps_wu_sacks_sent;

    sb.sctps_sends_with_flags += sarry->sctps_sends_with_flags;

    sb.sctps_sends_with_unord += sarry->sctps_sends_with_unord;

    sb.sctps_sends_with_eof += sarry->sctps_sends_with_eof;

    sb.sctps_sends_with_abort += sarry->sctps_sends_with_abort;

    sb.sctps_protocol_drain_calls += sarry->sctps_protocol_drain_calls;

    sb.sctps_protocol_drains_done += sarry->sctps_protocol_drains_done;

    sb.sctps_read_peeks += sarry->sctps_read_peeks;

    sb.sctps_cached_chk += sarry->sctps_cached_chk;

    sb.sctps_cached_strmoq += sarry->sctps_cached_strmoq;

    sb.sctps_left_abandon += sarry->sctps_left_abandon;

    sb.sctps_send_burst_avoid += sarry->sctps_send_burst_avoid;

    sb.sctps_send_cwnd_avoid += sarry->sctps_send_cwnd_avoid;

    sb.sctps_fwdtsn_map_over += sarry->sctps_fwdtsn_map_over;

    if (req->newptr != NULL) {

      memcpy(sarry, &sb_temp, sizeof(struct sctpstat));

    }

  }

  error = SYSCTL_OUT(req, &sb, sizeof(struct sctpstat));

#else

  error = SYSCTL_OUT(req, &SCTP_BASE_STATS, sizeof(struct sctpstat));

  if (error != 0) {

    return (error);

  }

  if (req->newptr != NULL) {

    memcpy(&SCTP_BASE_STATS, &sb_temp, sizeof(struct sctpstat));

  }

#endif

#else

  error = SYSCTL_OUT(req, &SCTP_BASE_STATS, sizeof(struct sctpstat));

#endif

  return (error);

}

#if defined(SCTP_LOCAL_TRACE_BUF)

#if defined(__APPLE__) && !defined(__Userspace__)

static int

sctp_sysctl_handle_trace_log SYSCTL_HANDLER_ARGS

{

#pragma unused(arg1, arg2, oidp)

#else

static int

sctp_sysctl_handle_trace_log(SYSCTL_HANDLER_ARGS)

{

#endif

  int error;

#if defined(_WIN32) && !defined(__Userspace__)

  error = SYSCTL_OUT(req, SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log));

#else

  error = SYSCTL_OUT(req, &SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log));

#endif

  return (error);

}

#if defined(__APPLE__) && !defined(__Userspace__)

static int

sctp_sysctl_handle_trace_log_clear SYSCTL_HANDLER_ARGS

{

#pragma unused(arg1, arg2, req, oidp)

#else

static int

sctp_sysctl_handle_trace_log_clear(SYSCTL_HANDLER_ARGS)

{

#endif

  int error = 0;

#if defined(_WIN32) && !defined(__Userspace__)

  int value = 0;

  if (req->new_data == NULL) {

    return (error);

  }

  error = SYSCTL_IN(req, &value, sizeof(int));

  if (error == 0 && value != 0 && SCTP_BASE_SYSCTL(sctp_log) != NULL) {

    memset(SCTP_BASE_SYSCTL(sctp_log), 0, sizeof(struct sctp_log));

  }

#else

  memset(&SCTP_BASE_SYSCTL(sctp_log), 0, sizeof(struct sctp_log));

#endif

  return (error);

}

#endif

#if (defined(__APPLE__) || defined(__FreeBSD__)) && !defined(__Userspace__)

#if defined(__FreeBSD__)

#define SCTP_UINT_SYSCTL(mib_name, var_name, prefix)      \

  static int              \

  sctp_sysctl_handle_##mib_name(SYSCTL_HANDLER_ARGS)    \

  {               \

    int error;            \

    uint32_t new;           \

                  \

    new = SCTP_BASE_SYSCTL(var_name);     \

    error = sysctl_handle_int(oidp, &new, 0, req);    \

    if ((error == 0) && (req->newptr != NULL)) {    \

      if ((new < prefix##_MIN) ||     \

          (new > prefix##_MAX)) {     \

        error = EINVAL;       \

      } else {          \

        SCTP_BASE_SYSCTL(var_name) = new; \

      }           \

    }             \

    return (error);           \

  }               \

  SYSCTL_PROC(_net_inet_sctp, OID_AUTO, mib_name,     \

                   CTLFLAG_VNET|CTLTYPE_UINT|CTLFLAG_RW, NULL, 0, \