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      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 #ifdef __FreeBSD__
     34 #include <sys/cdefs.h>
     35 __FBSDID("$FreeBSD: head/sys/netinet/sctp_sysctl.c 271221 2014-09-07 09:06:26Z tuexen $");
     36 #endif
     37 
     38 #include <netinet/sctp_os.h>
     39 #include <netinet/sctp.h>
     40 #include <netinet/sctp_constants.h>
     41 #include <netinet/sctp_sysctl.h>
     42 #include <netinet/sctp_pcb.h>
     43 #include <netinet/sctputil.h>
     44 #include <netinet/sctp_output.h>
     45 #ifdef __FreeBSD__
     46 #include <sys/smp.h>
     47 #include <sys/sysctl.h>
     48 #endif
     49 #if defined(__APPLE__)
     50 #include <netinet/sctp_bsd_addr.h>
     51 #endif
     52 
     53 #ifdef __FreeBSD__
     54 FEATURE(sctp, "Stream Control Transmission Protocol");
     55 #endif
     56 
     57 /*
     58  * sysctl tunable variables
     59  */
     60 
     61 void
     62 sctp_init_sysctls()
     63 {
     64 	SCTP_BASE_SYSCTL(sctp_sendspace) = SCTPCTL_MAXDGRAM_DEFAULT;
     65 	SCTP_BASE_SYSCTL(sctp_recvspace) = SCTPCTL_RECVSPACE_DEFAULT;
     66 	SCTP_BASE_SYSCTL(sctp_auto_asconf) = SCTPCTL_AUTOASCONF_DEFAULT;
     67 	SCTP_BASE_SYSCTL(sctp_multiple_asconfs) = SCTPCTL_MULTIPLEASCONFS_DEFAULT;
     68 	SCTP_BASE_SYSCTL(sctp_ecn_enable) = SCTPCTL_ECN_ENABLE_DEFAULT;
     69 	SCTP_BASE_SYSCTL(sctp_pr_enable) = SCTPCTL_PR_ENABLE_DEFAULT;
     70 	SCTP_BASE_SYSCTL(sctp_auth_enable) = SCTPCTL_AUTH_ENABLE_DEFAULT;
     71 	SCTP_BASE_SYSCTL(sctp_asconf_enable) = SCTPCTL_ASCONF_ENABLE_DEFAULT;
     72 	SCTP_BASE_SYSCTL(sctp_reconfig_enable) = SCTPCTL_RECONFIG_ENABLE_DEFAULT;
     73 	SCTP_BASE_SYSCTL(sctp_nrsack_enable) = SCTPCTL_NRSACK_ENABLE_DEFAULT;
     74 	SCTP_BASE_SYSCTL(sctp_pktdrop_enable) = SCTPCTL_PKTDROP_ENABLE_DEFAULT;
     75 	SCTP_BASE_SYSCTL(sctp_strict_sacks) = SCTPCTL_STRICT_SACKS_DEFAULT;
     76 #if !(defined(__FreeBSD__) && __FreeBSD_version >= 800000)
     77 #if !defined(SCTP_WITH_NO_CSUM)
     78 	SCTP_BASE_SYSCTL(sctp_no_csum_on_loopback) = SCTPCTL_LOOPBACK_NOCSUM_DEFAULT;
     79 #endif
     80 #endif
     81 	SCTP_BASE_SYSCTL(sctp_peer_chunk_oh) = SCTPCTL_PEER_CHKOH_DEFAULT;
     82 	SCTP_BASE_SYSCTL(sctp_max_burst_default) = SCTPCTL_MAXBURST_DEFAULT;
     83 	SCTP_BASE_SYSCTL(sctp_fr_max_burst_default) = SCTPCTL_FRMAXBURST_DEFAULT;
     84 	SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue) = SCTPCTL_MAXCHUNKS_DEFAULT;
     85 	SCTP_BASE_SYSCTL(sctp_hashtblsize) = SCTPCTL_TCBHASHSIZE_DEFAULT;
     86 	SCTP_BASE_SYSCTL(sctp_pcbtblsize) = SCTPCTL_PCBHASHSIZE_DEFAULT;
     87 	SCTP_BASE_SYSCTL(sctp_min_split_point) = SCTPCTL_MIN_SPLIT_POINT_DEFAULT;
     88 	SCTP_BASE_SYSCTL(sctp_chunkscale) = SCTPCTL_CHUNKSCALE_DEFAULT;
     89 	SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default) = SCTPCTL_DELAYED_SACK_TIME_DEFAULT;
     90 	SCTP_BASE_SYSCTL(sctp_sack_freq_default) = SCTPCTL_SACK_FREQ_DEFAULT;
     91 	SCTP_BASE_SYSCTL(sctp_system_free_resc_limit) = SCTPCTL_SYS_RESOURCE_DEFAULT;
     92 	SCTP_BASE_SYSCTL(sctp_asoc_free_resc_limit) = SCTPCTL_ASOC_RESOURCE_DEFAULT;
     93 	SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default) = SCTPCTL_HEARTBEAT_INTERVAL_DEFAULT;
     94 	SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default) = SCTPCTL_PMTU_RAISE_TIME_DEFAULT;
     95 	SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default) = SCTPCTL_SHUTDOWN_GUARD_TIME_DEFAULT;
     96 	SCTP_BASE_SYSCTL(sctp_secret_lifetime_default) = SCTPCTL_SECRET_LIFETIME_DEFAULT;
     97 	SCTP_BASE_SYSCTL(sctp_rto_max_default) = SCTPCTL_RTO_MAX_DEFAULT;
     98 	SCTP_BASE_SYSCTL(sctp_rto_min_default) = SCTPCTL_RTO_MIN_DEFAULT;
     99 	SCTP_BASE_SYSCTL(sctp_rto_initial_default) = SCTPCTL_RTO_INITIAL_DEFAULT;
    100 	SCTP_BASE_SYSCTL(sctp_init_rto_max_default) = SCTPCTL_INIT_RTO_MAX_DEFAULT;
    101 	SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default) = SCTPCTL_VALID_COOKIE_LIFE_DEFAULT;
    102 	SCTP_BASE_SYSCTL(sctp_init_rtx_max_default) = SCTPCTL_INIT_RTX_MAX_DEFAULT;
    103 	SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default) = SCTPCTL_ASSOC_RTX_MAX_DEFAULT;
    104 	SCTP_BASE_SYSCTL(sctp_path_rtx_max_default) = SCTPCTL_PATH_RTX_MAX_DEFAULT;
    105 	SCTP_BASE_SYSCTL(sctp_path_pf_threshold) = SCTPCTL_PATH_PF_THRESHOLD_DEFAULT;
    106 	SCTP_BASE_SYSCTL(sctp_add_more_threshold) = SCTPCTL_ADD_MORE_ON_OUTPUT_DEFAULT;
    107 	SCTP_BASE_SYSCTL(sctp_nr_incoming_streams_default) = SCTPCTL_INCOMING_STREAMS_DEFAULT;
    108 	SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default) = SCTPCTL_OUTGOING_STREAMS_DEFAULT;
    109 	SCTP_BASE_SYSCTL(sctp_cmt_on_off) = SCTPCTL_CMT_ON_OFF_DEFAULT;
    110 	SCTP_BASE_SYSCTL(sctp_cmt_use_dac) = SCTPCTL_CMT_USE_DAC_DEFAULT;
    111 	SCTP_BASE_SYSCTL(sctp_use_cwnd_based_maxburst) = SCTPCTL_CWND_MAXBURST_DEFAULT;
    112 	SCTP_BASE_SYSCTL(sctp_nat_friendly) = SCTPCTL_NAT_FRIENDLY_DEFAULT;
    113 	SCTP_BASE_SYSCTL(sctp_L2_abc_variable) = SCTPCTL_ABC_L_VAR_DEFAULT;
    114 	SCTP_BASE_SYSCTL(sctp_mbuf_threshold_count) = SCTPCTL_MAX_CHAINED_MBUFS_DEFAULT;
    115 	SCTP_BASE_SYSCTL(sctp_do_drain) = SCTPCTL_DO_SCTP_DRAIN_DEFAULT;
    116 	SCTP_BASE_SYSCTL(sctp_hb_maxburst) = SCTPCTL_HB_MAX_BURST_DEFAULT;
    117 	SCTP_BASE_SYSCTL(sctp_abort_if_one_2_one_hits_limit) = SCTPCTL_ABORT_AT_LIMIT_DEFAULT;
    118 	SCTP_BASE_SYSCTL(sctp_strict_data_order) = SCTPCTL_STRICT_DATA_ORDER_DEFAULT;
    119 	SCTP_BASE_SYSCTL(sctp_min_residual) = SCTPCTL_MIN_RESIDUAL_DEFAULT;
    120 	SCTP_BASE_SYSCTL(sctp_max_retran_chunk) = SCTPCTL_MAX_RETRAN_CHUNK_DEFAULT;
    121 	SCTP_BASE_SYSCTL(sctp_logging_level) = SCTPCTL_LOGGING_LEVEL_DEFAULT;
    122 	SCTP_BASE_SYSCTL(sctp_default_cc_module) = SCTPCTL_DEFAULT_CC_MODULE_DEFAULT;
    123 	SCTP_BASE_SYSCTL(sctp_default_ss_module) = SCTPCTL_DEFAULT_SS_MODULE_DEFAULT;
    124 	SCTP_BASE_SYSCTL(sctp_default_frag_interleave) = SCTPCTL_DEFAULT_FRAG_INTERLEAVE_DEFAULT;
    125 	SCTP_BASE_SYSCTL(sctp_mobility_base) = SCTPCTL_MOBILITY_BASE_DEFAULT;
    126 	SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) = SCTPCTL_MOBILITY_FASTHANDOFF_DEFAULT;
    127 	SCTP_BASE_SYSCTL(sctp_vtag_time_wait) = SCTPCTL_TIME_WAIT_DEFAULT;
    128 	SCTP_BASE_SYSCTL(sctp_buffer_splitting) = SCTPCTL_BUFFER_SPLITTING_DEFAULT;
    129 	SCTP_BASE_SYSCTL(sctp_initial_cwnd) = SCTPCTL_INITIAL_CWND_DEFAULT;
    130 	SCTP_BASE_SYSCTL(sctp_rttvar_bw) = SCTPCTL_RTTVAR_BW_DEFAULT;
    131 	SCTP_BASE_SYSCTL(sctp_rttvar_rtt) = SCTPCTL_RTTVAR_RTT_DEFAULT;
    132 	SCTP_BASE_SYSCTL(sctp_rttvar_eqret) = SCTPCTL_RTTVAR_EQRET_DEFAULT;
    133 	SCTP_BASE_SYSCTL(sctp_steady_step) = SCTPCTL_RTTVAR_STEADYS_DEFAULT;
    134 	SCTP_BASE_SYSCTL(sctp_use_dccc_ecn) = SCTPCTL_RTTVAR_DCCCECN_DEFAULT;
    135 	SCTP_BASE_SYSCTL(sctp_blackhole) = SCTPCTL_BLACKHOLE_DEFAULT;
    136 	SCTP_BASE_SYSCTL(sctp_diag_info_code) = SCTPCTL_DIAG_INFO_CODE_DEFAULT;
    137 #if defined(SCTP_LOCAL_TRACE_BUF)
    138 #if defined(__Windows__)
    139 	/* On Windows, the resource for global variables is limited. */
    140 	MALLOC(SCTP_BASE_SYSCTL(sctp_log), struct sctp_log *, sizeof(struct sctp_log), M_SYSCTL, M_ZERO);
    141 #else
    142 	memset(&SCTP_BASE_SYSCTL(sctp_log), 0, sizeof(struct sctp_log));
    143 #endif
    144 #endif
    145 	SCTP_BASE_SYSCTL(sctp_udp_tunneling_port) = SCTPCTL_UDP_TUNNELING_PORT_DEFAULT;
    146 	SCTP_BASE_SYSCTL(sctp_enable_sack_immediately) = SCTPCTL_SACK_IMMEDIATELY_ENABLE_DEFAULT;
    147 	SCTP_BASE_SYSCTL(sctp_inits_include_nat_friendly) = SCTPCTL_NAT_FRIENDLY_INITS_DEFAULT;
    148 #if defined(SCTP_DEBUG)
    149 	SCTP_BASE_SYSCTL(sctp_debug_on) = SCTPCTL_DEBUG_DEFAULT;
    150 #endif
    151 #if defined(__APPLE__)
    152 	SCTP_BASE_SYSCTL(sctp_ignore_vmware_interfaces) = SCTPCTL_IGNORE_VMWARE_INTERFACES_DEFAULT;
    153 	SCTP_BASE_SYSCTL(sctp_main_timer) = SCTPCTL_MAIN_TIMER_DEFAULT;
    154 	SCTP_BASE_SYSCTL(sctp_addr_watchdog_limit) = SCTPCTL_ADDR_WATCHDOG_LIMIT_DEFAULT;
    155 	SCTP_BASE_SYSCTL(sctp_vtag_watchdog_limit) = SCTPCTL_VTAG_WATCHDOG_LIMIT_DEFAULT;
    156 #endif
    157 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
    158 	SCTP_BASE_SYSCTL(sctp_output_unlocked) = SCTPCTL_OUTPUT_UNLOCKED_DEFAULT;
    159 #endif
    160 }
    161 
    162 #if defined(__Windows__)
    163 void
    164 sctp_finish_sysctls()
    165 {
    166 #if defined(SCTP_LOCAL_TRACE_BUF)
    167 	if (SCTP_BASE_SYSCTL(sctp_log) != NULL) {
    168 		FREE(SCTP_BASE_SYSCTL(sctp_log), M_SYSCTL);
    169 		SCTP_BASE_SYSCTL(sctp_log) = NULL;
    170 	}
    171 #endif
    172 }
    173 #endif
    174 
    175 #if defined(__APPLE__) || defined(__FreeBSD__) || defined(__Windows__)
    176 /* It returns an upper limit. No filtering is done here */
    177 static unsigned int
    178 sctp_sysctl_number_of_addresses(struct sctp_inpcb *inp)
    179 {
    180 	unsigned int cnt;
    181 	struct sctp_vrf *vrf;
    182 	struct sctp_ifn *sctp_ifn;
    183 	struct sctp_ifa *sctp_ifa;
    184 	struct sctp_laddr *laddr;
    185 
    186 	cnt = 0;
    187 	/* neither Mac OS X nor FreeBSD support mulitple routing functions */
    188 	if ((vrf = sctp_find_vrf(inp->def_vrf_id)) == NULL) {
    189 		return (0);
    190 	}
    191 	if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
    192 		LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
    193 			LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
    194 				switch (sctp_ifa->address.sa.sa_family) {
    195 #ifdef INET
    196 				case AF_INET:
    197 #endif
    198 #ifdef INET6
    199 				case AF_INET6:
    200 #endif
    201 					cnt++;
    202 					break;
    203 				default:
    204 					break;
    205 				}
    206 			}
    207 		}
    208 	} else {
    209 		LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
    210 			switch (laddr->ifa->address.sa.sa_family) {
    211 #ifdef INET
    212 			case AF_INET:
    213 #endif
    214 #ifdef INET6
    215 			case AF_INET6:
    216 #endif
    217 				cnt++;
    218 				break;
    219 			default:
    220 				break;
    221 			}
    222 		}
    223 	}
    224 	return (cnt);
    225 }
    226 
    227 static int
    228 sctp_sysctl_copy_out_local_addresses(struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sysctl_req *req)
    229 {
    230 	struct sctp_ifn *sctp_ifn;
    231 	struct sctp_ifa *sctp_ifa;
    232 	int loopback_scope, ipv4_local_scope, local_scope, site_scope;
    233 	int ipv4_addr_legal, ipv6_addr_legal;
    234 #if defined(__Userspace__)
    235 	int conn_addr_legal;
    236 #endif
    237 	struct sctp_vrf *vrf;
    238 	struct xsctp_laddr xladdr;
    239 	struct sctp_laddr *laddr;
    240 	int error;
    241 
    242 	/* Turn on all the appropriate scope */
    243 	if (stcb) {
    244 		/* use association specific values */
    245 		loopback_scope = stcb->asoc.scope.loopback_scope;
    246 		ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
    247 		local_scope = stcb->asoc.scope.local_scope;
    248 		site_scope = stcb->asoc.scope.site_scope;
    249 		ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
    250 		ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
    251 #if defined(__Userspace__)
    252 		conn_addr_legal = stcb->asoc.scope.conn_addr_legal;
    253 #endif
    254 	} else {
    255 		/* Use generic values for endpoints. */
    256 		loopback_scope = 1;
    257 		ipv4_local_scope = 1;
    258 		local_scope = 1;
    259 		site_scope = 1;
    260 		if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
    261 			ipv6_addr_legal = 1;
    262 			if (SCTP_IPV6_V6ONLY(inp)) {
    263 				ipv4_addr_legal = 0;
    264 			} else {
    265 				ipv4_addr_legal = 1;
    266 			}
    267 #if defined(__Userspace__)
    268 			conn_addr_legal = 0;
    269 #endif
    270 		} else {
    271 			ipv6_addr_legal = 0;
    272 #if defined(__Userspace__)
    273 			if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_CONN) {
    274 				conn_addr_legal = 1;
    275 				ipv4_addr_legal = 0;
    276 			} else {
    277 				conn_addr_legal = 0;
    278 				ipv4_addr_legal = 1;
    279 			}
    280 #else
    281 			ipv4_addr_legal = 1;
    282 #endif
    283 		}
    284 	}
    285 
    286 	/* neither Mac OS X nor FreeBSD support mulitple routing functions */
    287 	if ((vrf = sctp_find_vrf(inp->def_vrf_id)) == NULL) {
    288 		SCTP_INP_RUNLOCK(inp);
    289 		SCTP_INP_INFO_RUNLOCK();
    290 		return (-1);
    291 	}
    292 	if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
    293 		LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
    294 			if ((loopback_scope == 0) && SCTP_IFN_IS_IFT_LOOP(sctp_ifn))
    295 				/* Skip loopback if loopback_scope not set */
    296 				continue;
    297 			LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
    298 				if (stcb) {
    299 					/*
    300 					 * ignore if blacklisted at
    301 					 * association level
    302 					 */
    303 					if (sctp_is_addr_restricted(stcb, sctp_ifa))
    304 						continue;
    305 				}
    306 				switch (sctp_ifa->address.sa.sa_family) {
    307 #ifdef INET
    308 				case AF_INET:
    309 					if (ipv4_addr_legal) {
    310 						struct sockaddr_in *sin;
    311 
    312 						sin = &sctp_ifa->address.sin;
    313 						if (sin->sin_addr.s_addr == 0)
    314 							continue;
    315 #if defined(__FreeBSD__)
    316 						if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
    317 						                     &sin->sin_addr) != 0) {
    318 							continue;
    319 						}
    320 #endif
    321 						if ((ipv4_local_scope == 0) && (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)))
    322 							continue;
    323 					} else {
    324 						continue;
    325 					}
    326 					break;
    327 #endif
    328 #ifdef INET6
    329 				case AF_INET6:
    330 					if (ipv6_addr_legal) {
    331 						struct sockaddr_in6 *sin6;
    332 
    333 #if defined(SCTP_EMBEDDED_V6_SCOPE) && !defined(SCTP_KAME)
    334 						struct sockaddr_in6 lsa6;
    335 #endif
    336 						sin6 = &sctp_ifa->address.sin6;
    337 						if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
    338 							continue;
    339 #if defined(__FreeBSD__)
    340 						if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
    341 						                     &sin6->sin6_addr) != 0) {
    342 							continue;
    343 						}
    344 #endif
    345 						if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
    346 							if (local_scope == 0)
    347 								continue;
    348 #if defined(SCTP_EMBEDDED_V6_SCOPE)
    349 							if (sin6->sin6_scope_id == 0) {
    350 #ifdef SCTP_KAME
    351 								/* bad link local address */
    352 								if (sa6_recoverscope(sin6) != 0)
    353 									continue;
    354 #else
    355 								lsa6 = *sin6;
    356 								/* bad link local address */
    357 								if (in6_recoverscope(&lsa6, &lsa6.sin6_addr, NULL))
    358 									continue;
    359 								sin6 = &lsa6;
    360 #endif	/* SCTP_KAME */
    361 							}
    362 #endif /* SCTP_EMBEDDED_V6_SCOPE */
    363 						}
    364 						if ((site_scope == 0) && (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)))
    365 							continue;
    366 					} else {
    367 						continue;
    368 					}
    369 					break;
    370 #endif
    371 #if defined(__Userspace__)
    372 				case AF_CONN:
    373 					if (!conn_addr_legal) {
    374 						continue;
    375 					}
    376 					break;
    377 #endif
    378 				default:
    379 					continue;
    380 				}
    381 				memset((void *)&xladdr, 0, sizeof(struct xsctp_laddr));
    382 				memcpy((void *)&xladdr.address, (const void *)&sctp_ifa->address, sizeof(union sctp_sockstore));
    383 				SCTP_INP_RUNLOCK(inp);
    384 				SCTP_INP_INFO_RUNLOCK();
    385 				error = SYSCTL_OUT(req, &xladdr, sizeof(struct xsctp_laddr));
    386 				if (error) {
    387 					return (error);
    388 				} else {
    389 					SCTP_INP_INFO_RLOCK();
    390 					SCTP_INP_RLOCK(inp);
    391 				}
    392 			}
    393 		}
    394 	} else {
    395 		LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
    396 			/* ignore if blacklisted at association level */
    397 			if (stcb && sctp_is_addr_restricted(stcb, laddr->ifa))
    398 				continue;
    399 			memset((void *)&xladdr, 0, sizeof(struct xsctp_laddr));
    400 			memcpy((void *)&xladdr.address, (const void *)&laddr->ifa->address, sizeof(union sctp_sockstore));
    401 			xladdr.start_time.tv_sec = (uint32_t)laddr->start_time.tv_sec;
    402 			xladdr.start_time.tv_usec = (uint32_t)laddr->start_time.tv_usec;
    403 			SCTP_INP_RUNLOCK(inp);
    404 			SCTP_INP_INFO_RUNLOCK();
    405 			error = SYSCTL_OUT(req, &xladdr, sizeof(struct xsctp_laddr));
    406 			if (error) {
    407 				return (error);
    408 			} else {
    409 				SCTP_INP_INFO_RLOCK();
    410 				SCTP_INP_RLOCK(inp);
    411 			}
    412 		}
    413 	}
    414 	memset((void *)&xladdr, 0, sizeof(struct xsctp_laddr));
    415 	xladdr.last = 1;
    416 	SCTP_INP_RUNLOCK(inp);
    417 	SCTP_INP_INFO_RUNLOCK();
    418 	error = SYSCTL_OUT(req, &xladdr, sizeof(struct xsctp_laddr));
    419 
    420 	if (error) {
    421 		return (error);
    422 	} else {
    423 		SCTP_INP_INFO_RLOCK();
    424 		SCTP_INP_RLOCK(inp);
    425 		return (0);
    426 	}
    427 }
    428 
    429 /*
    430  * sysctl functions
    431  */
    432 #if defined(__APPLE__)
    433 static int
    434 sctp_sysctl_handle_assoclist SYSCTL_HANDLER_ARGS
    435 {
    436 #pragma unused(oidp, arg1, arg2)
    437 #else
    438 static int
    439 sctp_sysctl_handle_assoclist(SYSCTL_HANDLER_ARGS)
    440 {
    441 #endif
    442 	unsigned int number_of_endpoints;
    443 	unsigned int number_of_local_addresses;
    444 	unsigned int number_of_associations;
    445 	unsigned int number_of_remote_addresses;
    446 	unsigned int n;
    447 	int error;
    448 	struct sctp_inpcb *inp;
    449 	struct sctp_tcb *stcb;
    450 	struct sctp_nets *net;
    451 	struct xsctp_inpcb xinpcb;
    452 	struct xsctp_tcb xstcb;
    453 	struct xsctp_raddr xraddr;
    454 	struct socket *so;
    455 
    456 	number_of_endpoints = 0;
    457 	number_of_local_addresses = 0;
    458 	number_of_associations = 0;
    459 	number_of_remote_addresses = 0;
    460 
    461 	SCTP_INP_INFO_RLOCK();
    462 #if defined(__APPLE__)
    463 	if (req->oldptr == USER_ADDR_NULL) {
    464 #else
    465 	if (req->oldptr == NULL) {
    466 #endif
    467 		LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
    468 			SCTP_INP_RLOCK(inp);
    469 			number_of_endpoints++;
    470 			number_of_local_addresses += sctp_sysctl_number_of_addresses(inp);
    471 			LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
    472 				number_of_associations++;
    473 				number_of_local_addresses += sctp_sysctl_number_of_addresses(inp);
    474 				TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
    475 					number_of_remote_addresses++;
    476 				}
    477 			}
    478 			SCTP_INP_RUNLOCK(inp);
    479 		}
    480 		SCTP_INP_INFO_RUNLOCK();
    481 		n = (number_of_endpoints + 1) * sizeof(struct xsctp_inpcb) +
    482 		    (number_of_local_addresses + number_of_endpoints + number_of_associations) * sizeof(struct xsctp_laddr) +
    483 		    (number_of_associations + number_of_endpoints) * sizeof(struct xsctp_tcb) +
    484 		    (number_of_remote_addresses + number_of_associations) * sizeof(struct xsctp_raddr);
    485 
    486 		/* request some more memory than needed */
    487 #if !defined(__Windows__)
    488 		req->oldidx = (n + n / 8);
    489 #else
    490 		req->dataidx = (n + n / 8);
    491 #endif
    492 		return (0);
    493 	}
    494 #if defined(__APPLE__)
    495 	if (req->newptr != USER_ADDR_NULL) {
    496 #else
    497 	if (req->newptr != NULL) {
    498 #endif
    499 		SCTP_INP_INFO_RUNLOCK();
    500 		SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_SYSCTL, EPERM);
    501 		return (EPERM);
    502 	}
    503 	LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
    504 		SCTP_INP_RLOCK(inp);
    505 		if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
    506 			/* if its allgone it is being freed - skip it  */
    507 			goto skip;
    508 		}
    509 		xinpcb.last = 0;
    510 		xinpcb.local_port = ntohs(inp->sctp_lport);
    511 		xinpcb.flags = inp->sctp_flags;
    512 #if defined(__FreeBSD__) && __FreeBSD_version < 1000048
    513 		xinpcb.features = (uint32_t)inp->sctp_features;
    514 #else
    515 		xinpcb.features = inp->sctp_features;
    516 #endif
    517 		xinpcb.total_sends = inp->total_sends;
    518 		xinpcb.total_recvs = inp->total_recvs;
    519 		xinpcb.total_nospaces = inp->total_nospaces;
    520 		xinpcb.fragmentation_point = inp->sctp_frag_point;
    521 		so = inp->sctp_socket;
    522 		if ((so == NULL) ||
    523 		    (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
    524 			xinpcb.qlen = 0;
    525 			xinpcb.maxqlen = 0;
    526 		} else {
    527 			xinpcb.qlen = so->so_qlen;
    528 			xinpcb.maxqlen = so->so_qlimit;
    529 		}
    530 		SCTP_INP_INCR_REF(inp);
    531 		SCTP_INP_RUNLOCK(inp);
    532 		SCTP_INP_INFO_RUNLOCK();
    533 		error = SYSCTL_OUT(req, &xinpcb, sizeof(struct xsctp_inpcb));
    534 		if (error) {
    535 			SCTP_INP_DECR_REF(inp);
    536 			return (error);
    537 		}
    538 		SCTP_INP_INFO_RLOCK();
    539 		SCTP_INP_RLOCK(inp);
    540 		error = sctp_sysctl_copy_out_local_addresses(inp, NULL, req);
    541 		if (error) {
    542 			SCTP_INP_DECR_REF(inp);
    543 			return (error);
    544 		}
    545 		LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
    546 			SCTP_TCB_LOCK(stcb);
    547 			atomic_add_int(&stcb->asoc.refcnt, 1);
    548 			SCTP_TCB_UNLOCK(stcb);
    549 			xstcb.last = 0;
    550 			xstcb.local_port = ntohs(inp->sctp_lport);
    551 			xstcb.remote_port = ntohs(stcb->rport);
    552 			if (stcb->asoc.primary_destination != NULL)
    553 				xstcb.primary_addr = stcb->asoc.primary_destination->ro._l_addr;
    554 			xstcb.heartbeat_interval = stcb->asoc.heart_beat_delay;
    555 			xstcb.state = SCTP_GET_STATE(&stcb->asoc);	/* FIXME */
    556 #if defined(__FreeBSD__)
    557 #if __FreeBSD_version >= 800000
    558 			/* 7.0 does not support these */
    559 			xstcb.assoc_id = sctp_get_associd(stcb);
    560 			xstcb.peers_rwnd = stcb->asoc.peers_rwnd;
    561 #endif
    562 #else
    563 			xstcb.assoc_id = sctp_get_associd(stcb);
    564 			xstcb.peers_rwnd = stcb->asoc.peers_rwnd;
    565 #endif
    566 			xstcb.in_streams = stcb->asoc.streamincnt;
    567 			xstcb.out_streams = stcb->asoc.streamoutcnt;
    568 			xstcb.max_nr_retrans = stcb->asoc.overall_error_count;
    569 			xstcb.primary_process = 0; /* not really supported yet */
    570 			xstcb.T1_expireries = stcb->asoc.timoinit + stcb->asoc.timocookie;
    571 			xstcb.T2_expireries = stcb->asoc.timoshutdown + stcb->asoc.timoshutdownack;
    572 			xstcb.retransmitted_tsns = stcb->asoc.marked_retrans;
    573 			xstcb.start_time.tv_sec = (uint32_t)stcb->asoc.start_time.tv_sec;
    574 			xstcb.start_time.tv_usec = (uint32_t)stcb->asoc.start_time.tv_usec;
    575 			xstcb.discontinuity_time.tv_sec = (uint32_t)stcb->asoc.discontinuity_time.tv_sec;
    576 			xstcb.discontinuity_time.tv_usec = (uint32_t)stcb->asoc.discontinuity_time.tv_usec;
    577 			xstcb.total_sends = stcb->total_sends;
    578 			xstcb.total_recvs = stcb->total_recvs;
    579 			xstcb.local_tag = stcb->asoc.my_vtag;
    580 			xstcb.remote_tag = stcb->asoc.peer_vtag;
    581 			xstcb.initial_tsn = stcb->asoc.init_seq_number;
    582 			xstcb.highest_tsn = stcb->asoc.sending_seq - 1;
    583 			xstcb.cumulative_tsn = stcb->asoc.last_acked_seq;
    584 			xstcb.cumulative_tsn_ack = stcb->asoc.cumulative_tsn;
    585 			xstcb.mtu = stcb->asoc.smallest_mtu;
    586 			xstcb.refcnt = stcb->asoc.refcnt;
    587 			SCTP_INP_RUNLOCK(inp);
    588 			SCTP_INP_INFO_RUNLOCK();
    589 			error = SYSCTL_OUT(req, &xstcb, sizeof(struct xsctp_tcb));
    590 			if (error) {
    591 				SCTP_INP_DECR_REF(inp);
    592 				atomic_subtract_int(&stcb->asoc.refcnt, 1);
    593 				return (error);
    594 			}
    595 			SCTP_INP_INFO_RLOCK();
    596 			SCTP_INP_RLOCK(inp);
    597 			error = sctp_sysctl_copy_out_local_addresses(inp, stcb, req);
    598 			if (error) {
    599 				SCTP_INP_DECR_REF(inp);
    600 				atomic_subtract_int(&stcb->asoc.refcnt, 1);
    601 				return (error);
    602 			}
    603 			TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
    604 				xraddr.last = 0;
    605 				xraddr.address = net->ro._l_addr;
    606 				xraddr.active = ((net->dest_state & SCTP_ADDR_REACHABLE) == SCTP_ADDR_REACHABLE);
    607 				xraddr.confirmed = ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0);
    608 				xraddr.heartbeat_enabled = ((net->dest_state & SCTP_ADDR_NOHB) == 0);
    609 				xraddr.potentially_failed = ((net->dest_state & SCTP_ADDR_PF) == SCTP_ADDR_PF);
    610 				xraddr.rto = net->RTO;
    611 				xraddr.max_path_rtx = net->failure_threshold;
    612 				xraddr.rtx = net->marked_retrans;
    613 				xraddr.error_counter = net->error_count;
    614 				xraddr.cwnd = net->cwnd;
    615 				xraddr.flight_size = net->flight_size;
    616 				xraddr.mtu = net->mtu;
    617 #if defined(__FreeBSD__)
    618 #if __FreeBSD_version >= 800000
    619 				xraddr.rtt = net->rtt / 1000;
    620 				xraddr.heartbeat_interval = net->heart_beat_delay;
    621 #endif
    622 #else
    623 				xraddr.rtt = net->rtt / 1000;
    624 				xraddr.heartbeat_interval = net->heart_beat_delay;
    625 #endif
    626 				xraddr.start_time.tv_sec = (uint32_t)net->start_time.tv_sec;
    627 				xraddr.start_time.tv_usec = (uint32_t)net->start_time.tv_usec;
    628 				SCTP_INP_RUNLOCK(inp);
    629 				SCTP_INP_INFO_RUNLOCK();
    630 				error = SYSCTL_OUT(req, &xraddr, sizeof(struct xsctp_raddr));
    631 				if (error) {
    632 					SCTP_INP_DECR_REF(inp);
    633 					atomic_subtract_int(&stcb->asoc.refcnt, 1);
    634 					return (error);
    635 				}
    636 				SCTP_INP_INFO_RLOCK();
    637 				SCTP_INP_RLOCK(inp);
    638 			}
    639 			atomic_subtract_int(&stcb->asoc.refcnt, 1);
    640 			memset((void *)&xraddr, 0, sizeof(struct xsctp_raddr));
    641 			xraddr.last = 1;
    642 			SCTP_INP_RUNLOCK(inp);
    643 			SCTP_INP_INFO_RUNLOCK();
    644 			error = SYSCTL_OUT(req, &xraddr, sizeof(struct xsctp_raddr));
    645 			if (error) {
    646 				SCTP_INP_DECR_REF(inp);
    647 				return (error);
    648 			}
    649 			SCTP_INP_INFO_RLOCK();
    650 			SCTP_INP_RLOCK(inp);
    651 		}
    652 		SCTP_INP_DECR_REF(inp);
    653 		SCTP_INP_RUNLOCK(inp);
    654 		SCTP_INP_INFO_RUNLOCK();
    655 		memset((void *)&xstcb, 0, sizeof(struct xsctp_tcb));
    656 		xstcb.last = 1;
    657 		error = SYSCTL_OUT(req, &xstcb, sizeof(struct xsctp_tcb));
    658 		if (error) {
    659 			return (error);
    660 		}
    661 skip:
    662 		SCTP_INP_INFO_RLOCK();
    663 	}
    664 	SCTP_INP_INFO_RUNLOCK();
    665 
    666 	memset((void *)&xinpcb, 0, sizeof(struct xsctp_inpcb));
    667 	xinpcb.last = 1;
    668 	error = SYSCTL_OUT(req, &xinpcb, sizeof(struct xsctp_inpcb));
    669 	return (error);
    670 }
    671 
    672 #if defined(__APPLE__)
    673 static int
    674 sctp_sysctl_handle_udp_tunneling SYSCTL_HANDLER_ARGS
    675 {
    676 #pragma unused(arg1, arg2)
    677 #else
    678 static int
    679 sctp_sysctl_handle_udp_tunneling(SYSCTL_HANDLER_ARGS)
    680 {
    681 #endif
    682 	int error;
    683 	uint32_t old, new;
    684 
    685 	SCTP_INP_INFO_RLOCK();
    686 	old = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
    687 	SCTP_INP_INFO_RUNLOCK();
    688 	new = old;
    689 #if defined(__FreeBSD__) && __FreeBSD_version >= 800056 && __FreeBSD_version < 1000100
    690 #ifdef VIMAGE
    691 	error = vnet_sysctl_handle_int(oidp, &new, 0, req);
    692 #else
    693 	error = sysctl_handle_int(oidp, &new, 0, req);
    694 #endif
    695 #else
    696 	error = sysctl_handle_int(oidp, &new, 0, req);
    697 #endif
    698 	if ((error == 0) &&
    699 #if defined (__APPLE__)
    700 	    (req->newptr != USER_ADDR_NULL)) {
    701 #else
    702 	    (req->newptr != NULL)) {
    703 #endif
    704 #if defined(__Windows__)
    705 		SCTP_INP_INFO_WLOCK();
    706 		sctp_over_udp_restart();
    707 		SCTP_INP_INFO_WUNLOCK();
    708 #else
    709 		if ((new < SCTPCTL_UDP_TUNNELING_PORT_MIN) ||
    710 		    (new > SCTPCTL_UDP_TUNNELING_PORT_MAX)) {
    711 			error = EINVAL;
    712 		} else {
    713 			SCTP_INP_INFO_WLOCK();
    714 			SCTP_BASE_SYSCTL(sctp_udp_tunneling_port) = new;
    715 			if (old != 0) {
    716 				sctp_over_udp_stop();
    717 			}
    718 			if (new != 0) {
    719 				error = sctp_over_udp_start();
    720 			}
    721 			SCTP_INP_INFO_WUNLOCK();
    722 		}
    723 #endif
    724 	}
    725 	return (error);
    726 }
    727 
    728 #if defined(__APPLE__)
    729 int sctp_is_vmware_interface(struct ifnet *);
    730 
    731 static int
    732 sctp_sysctl_handle_vmware_interfaces SYSCTL_HANDLER_ARGS
    733 {
    734 #pragma unused(arg1, arg2)
    735 	int error;
    736 	uint32_t old, new;
    737 
    738 	old = SCTP_BASE_SYSCTL(sctp_ignore_vmware_interfaces);
    739 	new = old;
    740 	error = sysctl_handle_int(oidp, &new, 0, req);
    741 	if ((error == 0) && (req->newptr != USER_ADDR_NULL)) {
    742 		if ((new < SCTPCTL_IGNORE_VMWARE_INTERFACES_MIN) ||
    743 		    (new > SCTPCTL_IGNORE_VMWARE_INTERFACES_MAX)) {
    744 			error = EINVAL;
    745 		} else {
    746 			if ((old == 1) && (new == 0)) {
    747 				sctp_add_or_del_interfaces(sctp_is_vmware_interface, 1);
    748 			}
    749 			if ((old == 0) && (new == 1)) {
    750 				sctp_add_or_del_interfaces(sctp_is_vmware_interface, 0);
    751 			}
    752 			if (old != new) {
    753 				SCTP_BASE_SYSCTL(sctp_ignore_vmware_interfaces) = new;
    754 			}
    755 		}
    756 	}
    757 	return (error);
    758 }
    759 #endif
    760 
    761 #if defined(__APPLE__)
    762 static int
    763 sctp_sysctl_handle_auth SYSCTL_HANDLER_ARGS
    764 {
    765 #pragma unused(arg1, arg2)
    766 #else
    767 static int
    768 sctp_sysctl_handle_auth(SYSCTL_HANDLER_ARGS)
    769 {
    770 #endif
    771 	int error;
    772 	uint32_t new;
    773 
    774 	new = SCTP_BASE_SYSCTL(sctp_auth_enable);
    775 #if defined(__FreeBSD__) && __FreeBSD_version >= 800056 && __FreeBSD_version < 1000100
    776 #ifdef VIMAGE
    777 	error = vnet_sysctl_handle_int(oidp, &new, 0, req);
    778 #else
    779 	error = sysctl_handle_int(oidp, &new, 0, req);
    780 #endif
    781 #else
    782 	error = sysctl_handle_int(oidp, &new, 0, req);
    783 #endif
    784 	if ((error == 0) &&
    785 #if defined (__APPLE__)
    786 	    (req->newptr != USER_ADDR_NULL)) {
    787 #else
    788 	    (req->newptr != NULL)) {
    789 #endif
    790 		if ((new < SCTPCTL_AUTH_ENABLE_MIN) ||
    791 		    (new > SCTPCTL_AUTH_ENABLE_MAX) ||
    792 		    ((new == 0) && (SCTP_BASE_SYSCTL(sctp_asconf_enable) == 1))) {
    793 			error = EINVAL;
    794 		} else {
    795 			SCTP_BASE_SYSCTL(sctp_auth_enable) = new;
    796 		}
    797 	}
    798 	return (error);
    799 }
    800 
    801 #if defined(__APPLE__)
    802 static int
    803 sctp_sysctl_handle_asconf SYSCTL_HANDLER_ARGS
    804 {
    805 #pragma unused(arg1, arg2)
    806 #else
    807 static int
    808 sctp_sysctl_handle_asconf(SYSCTL_HANDLER_ARGS)
    809 {
    810 #endif
    811 	int error;
    812 	uint32_t new;
    813 
    814 	new = SCTP_BASE_SYSCTL(sctp_asconf_enable);
    815 #if defined(__FreeBSD__) && __FreeBSD_version >= 800056 && __FreeBSD_version < 1000100
    816 #ifdef VIMAGE
    817 	error = vnet_sysctl_handle_int(oidp, &new, 0, req);
    818 #else
    819 	error = sysctl_handle_int(oidp, &new, 0, req);
    820 #endif
    821 #else
    822 	error = sysctl_handle_int(oidp, &new, 0, req);
    823 #endif
    824 	if ((error == 0) &&
    825 #if defined (__APPLE__)
    826 	    (req->newptr != USER_ADDR_NULL)) {
    827 #else
    828 	    (req->newptr != NULL)) {
    829 #endif
    830 		if ((new < SCTPCTL_ASCONF_ENABLE_MIN) ||
    831 		    (new > SCTPCTL_ASCONF_ENABLE_MAX) ||
    832 		    ((new == 1) && (SCTP_BASE_SYSCTL(sctp_auth_enable) == 0))) {
    833 			error = EINVAL;
    834 		} else {
    835 			SCTP_BASE_SYSCTL(sctp_asconf_enable) = new;
    836 		}
    837 	}
    838 	return (error);
    839 }
    840 
    841 #if defined(__APPLE__)
    842 static int
    843 sctp_sysctl_handle_stats SYSCTL_HANDLER_ARGS
    844 {
    845 #pragma unused(oidp, arg1, arg2)
    846 #else
    847 static int
    848 sctp_sysctl_handle_stats(SYSCTL_HANDLER_ARGS)
    849 {
    850 #endif
    851 	int error;
    852 #if defined(__FreeBSD__)
    853 #if defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
    854 	int cpu;
    855 	struct sctpstat sb, *sarry;
    856 #endif
    857 #endif
    858 
    859 #if defined (__APPLE__)
    860 	if ((req->newptr != USER_ADDR_NULL) &&
    861 #else
    862 	if ((req->newptr != NULL) &&
    863 #endif
    864 	    (req->newlen != sizeof(struct sctpstat))) {
    865 		return (EINVAL);
    866 	}
    867 #if defined(__FreeBSD__)
    868 #if defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
    869 	memset(&sb, 0, sizeof(struct sctpstat));
    870 	for (cpu = 0; cpu < mp_maxid; cpu++) {
    871 		sarry = &SCTP_BASE_STATS[cpu];
    872 		if (sarry->sctps_discontinuitytime.tv_sec > sb.sctps_discontinuitytime.tv_sec) {
    873 			sb.sctps_discontinuitytime.tv_sec = sarry->sctps_discontinuitytime.tv_sec;
    874 			sb.sctps_discontinuitytime.tv_usec = sarry->sctps_discontinuitytime.tv_usec;
    875 		}
    876 		sb.sctps_currestab += sarry->sctps_currestab;
    877 		sb.sctps_activeestab += sarry->sctps_activeestab;
    878 		sb.sctps_restartestab += sarry->sctps_restartestab;
    879 		sb.sctps_collisionestab += sarry->sctps_collisionestab;
    880 		sb.sctps_passiveestab += sarry->sctps_passiveestab;
    881 		sb.sctps_aborted += sarry->sctps_aborted;
    882 		sb.sctps_shutdown += sarry->sctps_shutdown;
    883 		sb.sctps_outoftheblue += sarry->sctps_outoftheblue;
    884 		sb.sctps_checksumerrors += sarry->sctps_checksumerrors;
    885 		sb.sctps_outcontrolchunks += sarry->sctps_outcontrolchunks;
    886 		sb.sctps_outorderchunks += sarry->sctps_outorderchunks;
    887 		sb.sctps_outunorderchunks += sarry->sctps_outunorderchunks;
    888 		sb.sctps_incontrolchunks += sarry->sctps_incontrolchunks;
    889 		sb.sctps_inorderchunks += sarry->sctps_inorderchunks;
    890 		sb.sctps_inunorderchunks += sarry->sctps_inunorderchunks;
    891 		sb.sctps_fragusrmsgs += sarry->sctps_fragusrmsgs;
    892 		sb.sctps_reasmusrmsgs += sarry->sctps_reasmusrmsgs;
    893 		sb.sctps_outpackets += sarry->sctps_outpackets;
    894 		sb.sctps_inpackets += sarry->sctps_inpackets;
    895 		sb.sctps_recvpackets += sarry->sctps_recvpackets;
    896 		sb.sctps_recvdatagrams += sarry->sctps_recvdatagrams;
    897 		sb.sctps_recvpktwithdata += sarry->sctps_recvpktwithdata;
    898 		sb.sctps_recvsacks += sarry->sctps_recvsacks;
    899 		sb.sctps_recvdata += sarry->sctps_recvdata;
    900 		sb.sctps_recvdupdata += sarry->sctps_recvdupdata;
    901 		sb.sctps_recvheartbeat += sarry->sctps_recvheartbeat;
    902 		sb.sctps_recvheartbeatack += sarry->sctps_recvheartbeatack;
    903 		sb.sctps_recvecne += sarry->sctps_recvecne;
    904 		sb.sctps_recvauth += sarry->sctps_recvauth;
    905 		sb.sctps_recvauthmissing += sarry->sctps_recvauthmissing;
    906 		sb.sctps_recvivalhmacid += sarry->sctps_recvivalhmacid;
    907 		sb.sctps_recvivalkeyid += sarry->sctps_recvivalkeyid;
    908 		sb.sctps_recvauthfailed += sarry->sctps_recvauthfailed;
    909 		sb.sctps_recvexpress += sarry->sctps_recvexpress;
    910 		sb.sctps_recvexpressm += sarry->sctps_recvexpressm;
    911 		sb.sctps_recvnocrc += sarry->sctps_recvnocrc;
    912 		sb.sctps_recvswcrc += sarry->sctps_recvswcrc;
    913 		sb.sctps_recvhwcrc += sarry->sctps_recvhwcrc;
    914 		sb.sctps_sendpackets += sarry->sctps_sendpackets;
    915 		sb.sctps_sendsacks += sarry->sctps_sendsacks;
    916 		sb.sctps_senddata += sarry->sctps_senddata;
    917 		sb.sctps_sendretransdata += sarry->sctps_sendretransdata;
    918 		sb.sctps_sendfastretrans += sarry->sctps_sendfastretrans;
    919 		sb.sctps_sendmultfastretrans += sarry->sctps_sendmultfastretrans;
    920 		sb.sctps_sendheartbeat += sarry->sctps_sendheartbeat;
    921 		sb.sctps_sendecne += sarry->sctps_sendecne;
    922 		sb.sctps_sendauth += sarry->sctps_sendauth;
    923 		sb.sctps_senderrors += sarry->sctps_senderrors;
    924 		sb.sctps_sendnocrc += sarry->sctps_sendnocrc;
    925 		sb.sctps_sendswcrc += sarry->sctps_sendswcrc;
    926 		sb.sctps_sendhwcrc += sarry->sctps_sendhwcrc;
    927 		sb.sctps_pdrpfmbox += sarry->sctps_pdrpfmbox;
    928 		sb.sctps_pdrpfehos += sarry->sctps_pdrpfehos;
    929 		sb.sctps_pdrpmbda += sarry->sctps_pdrpmbda;
    930 		sb.sctps_pdrpmbct += sarry->sctps_pdrpmbct;
    931 		sb.sctps_pdrpbwrpt += sarry->sctps_pdrpbwrpt;
    932 		sb.sctps_pdrpcrupt += sarry->sctps_pdrpcrupt;
    933 		sb.sctps_pdrpnedat += sarry->sctps_pdrpnedat;
    934 		sb.sctps_pdrppdbrk += sarry->sctps_pdrppdbrk;
    935 		sb.sctps_pdrptsnnf += sarry->sctps_pdrptsnnf;
    936 		sb.sctps_pdrpdnfnd += sarry->sctps_pdrpdnfnd;
    937 		sb.sctps_pdrpdiwnp += sarry->sctps_pdrpdiwnp;
    938 		sb.sctps_pdrpdizrw += sarry->sctps_pdrpdizrw;
    939 		sb.sctps_pdrpbadd += sarry->sctps_pdrpbadd;
    940 		sb.sctps_pdrpmark += sarry->sctps_pdrpmark;
    941 		sb.sctps_timoiterator += sarry->sctps_timoiterator;
    942 		sb.sctps_timodata += sarry->sctps_timodata;
    943 		sb.sctps_timowindowprobe += sarry->sctps_timowindowprobe;
    944 		sb.sctps_timoinit += sarry->sctps_timoinit;
    945 		sb.sctps_timosack += sarry->sctps_timosack;
    946 		sb.sctps_timoshutdown += sarry->sctps_timoshutdown;
    947 		sb.sctps_timoheartbeat += sarry->sctps_timoheartbeat;
    948 		sb.sctps_timocookie += sarry->sctps_timocookie;
    949 		sb.sctps_timosecret += sarry->sctps_timosecret;
    950 		sb.sctps_timopathmtu += sarry->sctps_timopathmtu;
    951 		sb.sctps_timoshutdownack += sarry->sctps_timoshutdownack;
    952 		sb.sctps_timoshutdownguard += sarry->sctps_timoshutdownguard;
    953 		sb.sctps_timostrmrst += sarry->sctps_timostrmrst;
    954 		sb.sctps_timoearlyfr += sarry->sctps_timoearlyfr;
    955 		sb.sctps_timoasconf += sarry->sctps_timoasconf;
    956 		sb.sctps_timodelprim += sarry->sctps_timodelprim;
    957 		sb.sctps_timoautoclose += sarry->sctps_timoautoclose;
    958 		sb.sctps_timoassockill += sarry->sctps_timoassockill;
    959 		sb.sctps_timoinpkill += sarry->sctps_timoinpkill;
    960 		sb.sctps_hdrops += sarry->sctps_hdrops;
    961 		sb.sctps_badsum += sarry->sctps_badsum;
    962 		sb.sctps_noport += sarry->sctps_noport;
    963 		sb.sctps_badvtag += sarry->sctps_badvtag;
    964 		sb.sctps_badsid += sarry->sctps_badsid;
    965 		sb.sctps_nomem += sarry->sctps_nomem;
    966 		sb.sctps_fastretransinrtt += sarry->sctps_fastretransinrtt;
    967 		sb.sctps_markedretrans += sarry->sctps_markedretrans;
    968 		sb.sctps_naglesent += sarry->sctps_naglesent;
    969 		sb.sctps_naglequeued += sarry->sctps_naglequeued;
    970 		sb.sctps_maxburstqueued += sarry->sctps_maxburstqueued;
    971 		sb.sctps_ifnomemqueued += sarry->sctps_ifnomemqueued;
    972 		sb.sctps_windowprobed += sarry->sctps_windowprobed;
    973 		sb.sctps_lowlevelerr += sarry->sctps_lowlevelerr;
    974 		sb.sctps_lowlevelerrusr += sarry->sctps_lowlevelerrusr;
    975 		sb.sctps_datadropchklmt += sarry->sctps_datadropchklmt;
    976 		sb.sctps_datadroprwnd += sarry->sctps_datadroprwnd;
    977 		sb.sctps_ecnereducedcwnd += sarry->sctps_ecnereducedcwnd;
    978 		sb.sctps_vtagexpress += sarry->sctps_vtagexpress;
    979 		sb.sctps_vtagbogus += sarry->sctps_vtagbogus;
    980 		sb.sctps_primary_randry += sarry->sctps_primary_randry;
    981 		sb.sctps_cmt_randry += sarry->sctps_cmt_randry;
    982 		sb.sctps_slowpath_sack += sarry->sctps_slowpath_sack;
    983 		sb.sctps_wu_sacks_sent += sarry->sctps_wu_sacks_sent;
    984 		sb.sctps_sends_with_flags += sarry->sctps_sends_with_flags;
    985 		sb.sctps_sends_with_unord += sarry->sctps_sends_with_unord;
    986 		sb.sctps_sends_with_eof += sarry->sctps_sends_with_eof;
    987 		sb.sctps_sends_with_abort += sarry->sctps_sends_with_abort;
    988 		sb.sctps_protocol_drain_calls += sarry->sctps_protocol_drain_calls;
    989 		sb.sctps_protocol_drains_done += sarry->sctps_protocol_drains_done;
    990 		sb.sctps_read_peeks += sarry->sctps_read_peeks;
    991 		sb.sctps_cached_chk += sarry->sctps_cached_chk;
    992 		sb.sctps_cached_strmoq += sarry->sctps_cached_strmoq;
    993 		sb.sctps_left_abandon += sarry->sctps_left_abandon;
    994 		sb.sctps_send_burst_avoid += sarry->sctps_send_burst_avoid;
    995 		sb.sctps_send_cwnd_avoid += sarry->sctps_send_cwnd_avoid;
    996 		sb.sctps_fwdtsn_map_over += sarry->sctps_fwdtsn_map_over;
    997 		if (req->newptr != NULL) {
    998 			memcpy(sarry, req->newptr, sizeof(struct sctpstat));
    999 		}
   1000 	}
   1001 	error = SYSCTL_OUT(req, &sb, sizeof(struct sctpstat));
   1002 #else
   1003 	error = SYSCTL_OUT(req, &SCTP_BASE_STATS, sizeof(struct sctpstat));
   1004 #endif
   1005 #else
   1006 	error = SYSCTL_OUT(req, &SCTP_BASE_STATS, sizeof(struct sctpstat));
   1007 #endif
   1008 	return (error);
   1009 }
   1010 
   1011 #if defined(SCTP_LOCAL_TRACE_BUF)
   1012 #if defined(__APPLE__)
   1013 static int
   1014 sctp_sysctl_handle_trace_log SYSCTL_HANDLER_ARGS
   1015 {
   1016 #pragma unused(arg1, arg2, oidp)
   1017 #else
   1018 static int
   1019 sctp_sysctl_handle_trace_log(SYSCTL_HANDLER_ARGS)
   1020 {
   1021 #endif
   1022 	int error;
   1023 
   1024 #if defined(__Windows__)
   1025 	error = SYSCTL_OUT(req, SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log));
   1026 #else
   1027 	error = SYSCTL_OUT(req, &SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log));
   1028 #endif
   1029 	return (error);
   1030 }
   1031 
   1032 #if defined(__APPLE__)
   1033 static int
   1034 sctp_sysctl_handle_trace_log_clear SYSCTL_HANDLER_ARGS
   1035 {
   1036 #pragma unused(arg1, arg2, req, oidp)
   1037 #else
   1038 static int
   1039 sctp_sysctl_handle_trace_log_clear(SYSCTL_HANDLER_ARGS)
   1040 {
   1041 #endif
   1042 	int error = 0;
   1043 #if defined(__Windows__)
   1044 	int value = 0;
   1045 
   1046 	if (req->new_data == NULL) {
   1047 		return (error);
   1048 	}
   1049 	error = SYSCTL_IN(req, &value, sizeof(int));
   1050 	if (error == 0 && value != 0 && SCTP_BASE_SYSCTL(sctp_log) != NULL) {
   1051 		memset(SCTP_BASE_SYSCTL(sctp_log), 0, sizeof(struct sctp_log));
   1052 	}
   1053 #else
   1054 
   1055 	memset(&SCTP_BASE_SYSCTL(sctp_log), 0, sizeof(struct sctp_log));
   1056 #endif
   1057 	return (error);
   1058 }
   1059 #endif
   1060 
   1061 #if defined(__APPLE__) || defined(__FreeBSD__)
   1062 #if defined(__FreeBSD__)
   1063 #if __FreeBSD_version >= 800056 && __FreeBSD_version < 1000100
   1064 #ifdef VIMAGE
   1065 #define SCTP_UINT_SYSCTL(name, var_name, prefix)			\
   1066 	static int							\
   1067 	sctp_sysctl_handle_##mib_name(SYSCTL_HANDLER_ARGS)		\
   1068 	{								\
   1069 		int error;						\
   1070 		uint32_t new;						\
   1071 									\
   1072 		new = SCTP_BASE_SYSCTL(var_name);			\
   1073 		error = vnet_sysctl_handle_int(oidp, &new, 0, req);	\
   1074 		if ((error == 0) && (req->newptr != NULL)) {		\
   1075 			if ((new < prefix##_MIN) ||			\
   1076 			    (new > prefix##_MAX)) {			\
   1077 				error = EINVAL;				\
   1078 			} else {					\
   1079 				SCTP_BASE_SYSCTL(var_name) = new;	\
   1080 			}						\
   1081 		}							\
   1082 		return (error);						\
   1083 	}								\
   1084 	SYSCTL_PROC(_net_inet_sctp, OID_AUTO, mib_name,			\
   1085 	                 CTLTYPE_UINT|CTLFLAG_RW, NULL, 0,		\
   1086 	                 sctp_sysctl_handle_##mib_name, "UI", prefix##_DESC);
   1087 #else
   1088 #define SCTP_UINT_SYSCTL(mib_name, var_name, prefix)			\
   1089 	static int							\
   1090 	sctp_sysctl_handle_##mib_name(SYSCTL_HANDLER_ARGS)		\
   1091 	{								\
   1092 		int error;						\
   1093 		uint32_t new;						\
   1094 									\
   1095 		new = SCTP_BASE_SYSCTL(var_name);			\
   1096 		error = sysctl_handle_int(oidp, &new, 0, req);		\
   1097 		if ((error == 0) && (req->newptr != NULL)) {		\
   1098 			if ((new < prefix##_MIN) ||			\
   1099 			    (new > prefix##_MAX)) {			\
   1100 				error = EINVAL;				\
   1101 			} else {					\
   1102 				SCTP_BASE_SYSCTL(var_name) = new;	\
   1103 			}						\
   1104 		}							\
   1105 		return (error);						\
   1106 	}								\
   1107 	SYSCTL_PROC(_net_inet_sctp, OID_AUTO, mib_name,			\
   1108 	                 CTLFLAG_VNET|CTLTYPE_UINT|CTLFLAG_RW, NULL, 0,	\
   1109 	                 sctp_sysctl_handle_##mib_name, "UI", prefix##_DESC);
   1110 #endif
   1111 #else
   1112 #define SCTP_UINT_SYSCTL(mib_name, var_name, prefix)			\
   1113 	static int							\
   1114 	sctp_sysctl_handle_##mib_name(SYSCTL_HANDLER_ARGS)		\
   1115 	{								\
   1116 		int error;						\
   1117 		uint32_t new;						\
   1118 									\
   1119 		new = SCTP_BASE_SYSCTL(var_name);			\
   1120 		error = sysctl_handle_int(oidp, &new, 0, req);		\
   1121 		if ((error == 0) && (req->newptr != NULL)) {		\
   1122 			if ((new < prefix##_MIN) ||			\
   1123 			    (new > prefix##_MAX)) {			\
   1124 				error = EINVAL;				\
   1125 			} else {					\
   1126 				SCTP_BASE_SYSCTL(var_name) = new;	\
   1127 			}						\
   1128 		}							\
   1129 		return (error);						\
   1130 	}								\
   1131 	SYSCTL_PROC(_net_inet_sctp, OID_AUTO, mib_name,			\
   1132 	                 CTLFLAG_VNET|CTLTYPE_UINT|CTLFLAG_RW, NULL, 0,	\
   1133 	                 sctp_sysctl_handle_##mib_name, "UI", prefix##_DESC);
   1134 #endif
   1135 #else
   1136 #define SCTP_UINT_SYSCTL(mib_name, var_name, prefix)			\
   1137 	static int							\
   1138 	sctp_sysctl_handle_##mib_name(struct sysctl_oid *oidp,		\
   1139 	                          void *arg1 __attribute__((unused)),	\
   1140 	                          int arg2 __attribute__((unused)),	\
   1141 	                          struct sysctl_req *req)		\
   1142 	{								\
   1143 		int error;						\
   1144 		uint32_t new;						\
   1145 									\
   1146 		new = SCTP_BASE_SYSCTL(var_name);			\
   1147 		error = sysctl_handle_int(oidp, &new, 0, req);		\
   1148 		if ((error == 0) && (req->newptr != USER_ADDR_NULL)) {	\
   1149 			if ((new < prefix##_MIN) ||			\
   1150 			    (new > prefix##_MAX)) {			\
   1151 				error = EINVAL;				\
   1152 			} else {					\
   1153 				SCTP_BASE_SYSCTL(var_name) = new;	\
   1154 			}						\
   1155 		}							\
   1156 		return (error);						\
   1157 	}								\
   1158 	SYSCTL_PROC(_net_inet_sctp, OID_AUTO, mib_name,			\
   1159 	            CTLTYPE_INT | CTLFLAG_RW, NULL, 0,			\
   1160 	            sctp_sysctl_handle_##mib_name, "I", prefix##_DESC);
   1161 #define CTLTYPE_UINT CTLTYPE_INT
   1162 #define CTLFLAG_VNET 0
   1163 #endif
   1164 
   1165 /*
   1166  * sysctl definitions
   1167  */
   1168 
   1169 SCTP_UINT_SYSCTL(sendspace, sctp_sendspace, SCTPCTL_MAXDGRAM)
   1170 SCTP_UINT_SYSCTL(recvspace, sctp_recvspace, SCTPCTL_RECVSPACE)
   1171 SCTP_UINT_SYSCTL(auto_asconf, sctp_auto_asconf, SCTPCTL_AUTOASCONF)
   1172 SCTP_UINT_SYSCTL(ecn_enable, sctp_ecn_enable, SCTPCTL_ECN_ENABLE)
   1173 SCTP_UINT_SYSCTL(pr_enable, sctp_pr_enable, SCTPCTL_PR_ENABLE)
   1174 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, auth_enable, CTLFLAG_VNET|CTLTYPE_UINT|CTLFLAG_RW,
   1175             NULL, 0, sctp_sysctl_handle_auth, "IU", SCTPCTL_AUTH_ENABLE_DESC);
   1176 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, asconf_enable, CTLFLAG_VNET|CTLTYPE_UINT|CTLFLAG_RW,
   1177             NULL, 0, sctp_sysctl_handle_asconf, "IU", SCTPCTL_ASCONF_ENABLE_DESC);
   1178 SCTP_UINT_SYSCTL(reconfig_enable, sctp_reconfig_enable, SCTPCTL_RECONFIG_ENABLE)
   1179 SCTP_UINT_SYSCTL(nrsack_enable, sctp_nrsack_enable, SCTPCTL_NRSACK_ENABLE)
   1180 SCTP_UINT_SYSCTL(pktdrop_enable, sctp_pktdrop_enable, SCTPCTL_PKTDROP_ENABLE)
   1181 SCTP_UINT_SYSCTL(strict_sacks, sctp_strict_sacks, SCTPCTL_STRICT_SACKS)
   1182 #if defined(__APPLE__)
   1183 #if !defined(SCTP_WITH_NO_CSUM)
   1184 SCTP_UINT_SYSCTL(loopback_nocsum, sctp_no_csum_on_loopback, SCTPCTL_LOOPBACK_NOCSUM)
   1185 #endif
   1186 #endif
   1187 SCTP_UINT_SYSCTL(peer_chkoh, sctp_peer_chunk_oh, SCTPCTL_PEER_CHKOH)
   1188 SCTP_UINT_SYSCTL(maxburst, sctp_max_burst_default, SCTPCTL_MAXBURST)
   1189 SCTP_UINT_SYSCTL(fr_maxburst, sctp_fr_max_burst_default, SCTPCTL_FRMAXBURST)
   1190 SCTP_UINT_SYSCTL(maxchunks, sctp_max_chunks_on_queue, SCTPCTL_MAXCHUNKS)
   1191 SCTP_UINT_SYSCTL(tcbhashsize, sctp_hashtblsize, SCTPCTL_TCBHASHSIZE)
   1192 SCTP_UINT_SYSCTL(pcbhashsize, sctp_pcbtblsize, SCTPCTL_PCBHASHSIZE)
   1193 SCTP_UINT_SYSCTL(min_split_point, sctp_min_split_point, SCTPCTL_MIN_SPLIT_POINT)
   1194 SCTP_UINT_SYSCTL(chunkscale, sctp_chunkscale, SCTPCTL_CHUNKSCALE)
   1195 SCTP_UINT_SYSCTL(delayed_sack_time, sctp_delayed_sack_time_default, SCTPCTL_DELAYED_SACK_TIME)
   1196 SCTP_UINT_SYSCTL(sack_freq, sctp_sack_freq_default, SCTPCTL_SACK_FREQ)
   1197 SCTP_UINT_SYSCTL(sys_resource, sctp_system_free_resc_limit, SCTPCTL_SYS_RESOURCE)
   1198 SCTP_UINT_SYSCTL(asoc_resource, sctp_asoc_free_resc_limit, SCTPCTL_ASOC_RESOURCE)
   1199 SCTP_UINT_SYSCTL(heartbeat_interval, sctp_heartbeat_interval_default, SCTPCTL_HEARTBEAT_INTERVAL)
   1200 SCTP_UINT_SYSCTL(pmtu_raise_time, sctp_pmtu_raise_time_default, SCTPCTL_PMTU_RAISE_TIME)
   1201 SCTP_UINT_SYSCTL(shutdown_guard_time, sctp_shutdown_guard_time_default, SCTPCTL_SHUTDOWN_GUARD_TIME)
   1202 SCTP_UINT_SYSCTL(secret_lifetime, sctp_secret_lifetime_default, SCTPCTL_SECRET_LIFETIME)
   1203 SCTP_UINT_SYSCTL(rto_max, sctp_rto_max_default, SCTPCTL_RTO_MAX)
   1204 SCTP_UINT_SYSCTL(rto_min, sctp_rto_min_default, SCTPCTL_RTO_MIN)
   1205 SCTP_UINT_SYSCTL(rto_initial, sctp_rto_initial_default, SCTPCTL_RTO_INITIAL)
   1206 SCTP_UINT_SYSCTL(init_rto_max, sctp_init_rto_max_default, SCTPCTL_INIT_RTO_MAX)
   1207 SCTP_UINT_SYSCTL(valid_cookie_life, sctp_valid_cookie_life_default, SCTPCTL_VALID_COOKIE_LIFE)
   1208 SCTP_UINT_SYSCTL(init_rtx_max, sctp_init_rtx_max_default, SCTPCTL_INIT_RTX_MAX)
   1209 SCTP_UINT_SYSCTL(assoc_rtx_max, sctp_assoc_rtx_max_default, SCTPCTL_ASSOC_RTX_MAX)
   1210 SCTP_UINT_SYSCTL(path_rtx_max, sctp_path_rtx_max_default, SCTPCTL_PATH_RTX_MAX)
   1211 SCTP_UINT_SYSCTL(path_pf_threshold, sctp_path_pf_threshold, SCTPCTL_PATH_PF_THRESHOLD)
   1212 SCTP_UINT_SYSCTL(add_more_on_output, sctp_add_more_threshold, SCTPCTL_ADD_MORE_ON_OUTPUT)
   1213 SCTP_UINT_SYSCTL(incoming_streams, sctp_nr_incoming_streams_default, SCTPCTL_INCOMING_STREAMS)
   1214 SCTP_UINT_SYSCTL(outgoing_streams, sctp_nr_outgoing_streams_default, SCTPCTL_OUTGOING_STREAMS)
   1215 SCTP_UINT_SYSCTL(cmt_on_off, sctp_cmt_on_off, SCTPCTL_CMT_ON_OFF)
   1216 SCTP_UINT_SYSCTL(cmt_use_dac, sctp_cmt_use_dac, SCTPCTL_CMT_USE_DAC)
   1217 SCTP_UINT_SYSCTL(cwnd_maxburst, sctp_use_cwnd_based_maxburst, SCTPCTL_CWND_MAXBURST)
   1218 SCTP_UINT_SYSCTL(nat_friendly, sctp_nat_friendly, SCTPCTL_NAT_FRIENDLY)
   1219 SCTP_UINT_SYSCTL(abc_l_var, sctp_L2_abc_variable, SCTPCTL_ABC_L_VAR)
   1220 SCTP_UINT_SYSCTL(max_chained_mbufs, sctp_mbuf_threshold_count, SCTPCTL_MAX_CHAINED_MBUFS)
   1221 SCTP_UINT_SYSCTL(do_sctp_drain, sctp_do_drain, SCTPCTL_DO_SCTP_DRAIN)
   1222 SCTP_UINT_SYSCTL(hb_max_burst, sctp_hb_maxburst, SCTPCTL_HB_MAX_BURST)
   1223 SCTP_UINT_SYSCTL(abort_at_limit, sctp_abort_if_one_2_one_hits_limit, SCTPCTL_ABORT_AT_LIMIT)
   1224 SCTP_UINT_SYSCTL(strict_data_order, sctp_strict_data_order, SCTPCTL_STRICT_DATA_ORDER)
   1225 SCTP_UINT_SYSCTL(min_residual, sctp_min_residual, SCTPCTL_MIN_RESIDUAL)
   1226 SCTP_UINT_SYSCTL(max_retran_chunk, sctp_max_retran_chunk, SCTPCTL_MAX_RETRAN_CHUNK)
   1227 SCTP_UINT_SYSCTL(log_level, sctp_logging_level, SCTPCTL_LOGGING_LEVEL)
   1228 SCTP_UINT_SYSCTL(default_cc_module, sctp_default_cc_module, SCTPCTL_DEFAULT_CC_MODULE)
   1229 SCTP_UINT_SYSCTL(default_ss_module, sctp_default_ss_module, SCTPCTL_DEFAULT_SS_MODULE)
   1230 SCTP_UINT_SYSCTL(default_frag_interleave, sctp_default_frag_interleave, SCTPCTL_DEFAULT_FRAG_INTERLEAVE)
   1231 SCTP_UINT_SYSCTL(mobility_base, sctp_mobility_base, SCTPCTL_MOBILITY_BASE)
   1232 SCTP_UINT_SYSCTL(mobility_fasthandoff, sctp_mobility_fasthandoff, SCTPCTL_MOBILITY_FASTHANDOFF)
   1233 #if defined(SCTP_LOCAL_TRACE_BUF)
   1234 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, log, CTLFLAG_VNET|CTLTYPE_STRUCT|CTLFLAG_RD,
   1235             NULL, 0, sctp_sysctl_handle_trace_log, "S,sctplog", "SCTP logging (struct sctp_log)");
   1236 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, clear_trace, CTLFLAG_VNET|CTLTYPE_UINT | CTLFLAG_RW,
   1237             NULL, 0, sctp_sysctl_handle_trace_log_clear, "IU", "Clear SCTP Logging buffer");
   1238 #endif
   1239 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, udp_tunneling_port, CTLFLAG_VNET|CTLTYPE_UINT|CTLFLAG_RW,
   1240             NULL, 0, sctp_sysctl_handle_udp_tunneling, "IU", SCTPCTL_UDP_TUNNELING_PORT_DESC);
   1241 SCTP_UINT_SYSCTL(enable_sack_immediately, sctp_enable_sack_immediately, SCTPCTL_SACK_IMMEDIATELY_ENABLE)
   1242 SCTP_UINT_SYSCTL(nat_friendly_init, sctp_inits_include_nat_friendly, SCTPCTL_NAT_FRIENDLY_INITS)
   1243 SCTP_UINT_SYSCTL(vtag_time_wait, sctp_vtag_time_wait, SCTPCTL_TIME_WAIT)
   1244 SCTP_UINT_SYSCTL(buffer_splitting, sctp_buffer_splitting, SCTPCTL_BUFFER_SPLITTING)
   1245 SCTP_UINT_SYSCTL(initial_cwnd, sctp_initial_cwnd, SCTPCTL_INITIAL_CWND)
   1246 SCTP_UINT_SYSCTL(rttvar_bw, sctp_rttvar_bw, SCTPCTL_RTTVAR_BW)
   1247 SCTP_UINT_SYSCTL(rttvar_rtt, sctp_rttvar_rtt, SCTPCTL_RTTVAR_RTT)
   1248 SCTP_UINT_SYSCTL(rttvar_eqret, sctp_rttvar_eqret, SCTPCTL_RTTVAR_EQRET)
   1249 SCTP_UINT_SYSCTL(rttvar_steady_step, sctp_steady_step, SCTPCTL_RTTVAR_STEADYS)
   1250 SCTP_UINT_SYSCTL(use_dcccecn, sctp_use_dccc_ecn, SCTPCTL_RTTVAR_DCCCECN)
   1251 SCTP_UINT_SYSCTL(blackhole, sctp_blackhole, SCTPCTL_BLACKHOLE)
   1252 SCTP_UINT_SYSCTL(diag_info_code, sctp_diag_info_code, SCTPCTL_DIAG_INFO_CODE)
   1253 #ifdef SCTP_DEBUG
   1254 SCTP_UINT_SYSCTL(debug, sctp_debug_on, SCTPCTL_DEBUG)
   1255 #endif
   1256 #if defined(__APPLE__)
   1257 SCTP_UINT_SYSCTL(main_timer, sctp_main_timer, SCTPCTL_MAIN_TIMER)
   1258 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, ignore_vmware_interfaces, CTLTYPE_UINT|CTLFLAG_RW,
   1259             NULL, 0, sctp_sysctl_handle_vmware_interfaces, "IU", SCTPCTL_IGNORE_VMWARE_INTERFACES_DESC);
   1260 SCTP_UINT_SYSCTL(addr_watchdog_limit, sctp_addr_watchdog_limit, SCTPCTL_ADDR_WATCHDOG_LIMIT)
   1261 SCTP_UINT_SYSCTL(vtag_watchdog_limit, sctp_vtag_watchdog_limit, SCTPCTL_VTAG_WATCHDOG_LIMIT)
   1262 #endif
   1263 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
   1264 SCTP_UINT_SYSCTL(output_unlocked, sctp_output_unlocked, SCTPCTL_OUTPUT_UNLOCKED)
   1265 #endif
   1266 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, stats, CTLFLAG_VNET|CTLTYPE_STRUCT|CTLFLAG_RW,
   1267             NULL, 0, sctp_sysctl_handle_stats, "S,sctpstat", "SCTP statistics (struct sctp_stat)");
   1268 SYSCTL_PROC(_net_inet_sctp, OID_AUTO, assoclist, CTLFLAG_VNET|CTLTYPE_OPAQUE|CTLFLAG_RD,
   1269             NULL, 0, sctp_sysctl_handle_assoclist, "S,xassoc", "List of active SCTP associations");
   1270 
   1271 #elif defined(__Windows__)
   1272 
   1273 #define RANGECHK(var, min, max) \
   1274 	if ((var) < (min)) { (var) = (min); } \
   1275 	else if ((var) > (max)) { (var) = (max); }
   1276 
   1277 static int
   1278 sctp_sysctl_handle_int(SYSCTL_HANDLER_ARGS)
   1279 {
   1280 	int error;
   1281 
   1282 	error = sysctl_handle_int(oidp, oidp->oid_arg1, oidp->oid_arg2, req);
   1283 	if (error == 0) {
   1284 		RANGECHK(SCTP_BASE_SYSCTL(sctp_sendspace), SCTPCTL_MAXDGRAM_MIN, SCTPCTL_MAXDGRAM_MAX);
   1285 		RANGECHK(SCTP_BASE_SYSCTL(sctp_recvspace), SCTPCTL_RECVSPACE_MIN, SCTPCTL_RECVSPACE_MAX);
   1286 		RANGECHK(SCTP_BASE_SYSCTL(sctp_auto_asconf), SCTPCTL_AUTOASCONF_MIN, SCTPCTL_AUTOASCONF_MAX);
   1287 		RANGECHK(SCTP_BASE_SYSCTL(sctp_auto_asconf), SCTPCTL_AUTOASCONF_MIN, SCTPCTL_AUTOASCONF_MAX);
   1288 		RANGECHK(SCTP_BASE_SYSCTL(sctp_ecn_enable), SCTPCTL_ECN_ENABLE_MIN, SCTPCTL_ECN_ENABLE_MAX);
   1289 		RANGECHK(SCTP_BASE_SYSCTL(sctp_pr_enable), SCTPCTL_PR_ENABLE_MIN, SCTPCTL_PR_ENABLE_MAX);
   1290 		RANGECHK(SCTP_BASE_SYSCTL(sctp_reconfig_enable), SCTPCTL_RECONFIG_ENABLE_MIN, SCTPCTL_RECONFIG_ENABLE_MAX);
   1291 		RANGECHK(SCTP_BASE_SYSCTL(sctp_nrsack_enable), SCTPCTL_NRSACK_ENABLE_MIN, SCTPCTL_NRSACK_ENABLE_MAX);
   1292 		RANGECHK(SCTP_BASE_SYSCTL(sctp_pktdrop_enable), SCTPCTL_PKTDROP_ENABLE_MIN, SCTPCTL_PKTDROP_ENABLE_MAX);
   1293 		RANGECHK(SCTP_BASE_SYSCTL(sctp_strict_sacks), SCTPCTL_STRICT_SACKS_MIN, SCTPCTL_STRICT_SACKS_MAX);
   1294 #if !defined(SCTP_WITH_NO_CSUM)
   1295 		RANGECHK(SCTP_BASE_SYSCTL(sctp_no_csum_on_loopback), SCTPCTL_LOOPBACK_NOCSUM_MIN, SCTPCTL_LOOPBACK_NOCSUM_MAX);
   1296 #endif
   1297 		RANGECHK(SCTP_BASE_SYSCTL(sctp_peer_chunk_oh), SCTPCTL_PEER_CHKOH_MIN, SCTPCTL_PEER_CHKOH_MAX);
   1298 		RANGECHK(SCTP_BASE_SYSCTL(sctp_max_burst_default), SCTPCTL_MAXBURST_MIN, SCTPCTL_MAXBURST_MAX);
   1299 		RANGECHK(SCTP_BASE_SYSCTL(sctp_fr_max_burst_default), SCTPCTL_FRMAXBURST_MIN, SCTPCTL_FRMAXBURST_MAX);
   1300 		RANGECHK(SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue), SCTPCTL_MAXCHUNKS_MIN, SCTPCTL_MAXCHUNKS_MAX);
   1301 		RANGECHK(SCTP_BASE_SYSCTL(sctp_hashtblsize), SCTPCTL_TCBHASHSIZE_MIN, SCTPCTL_TCBHASHSIZE_MAX);
   1302 		RANGECHK(SCTP_BASE_SYSCTL(sctp_pcbtblsize), SCTPCTL_PCBHASHSIZE_MIN, SCTPCTL_PCBHASHSIZE_MAX);
   1303 		RANGECHK(SCTP_BASE_SYSCTL(sctp_min_split_point), SCTPCTL_MIN_SPLIT_POINT_MIN, SCTPCTL_MIN_SPLIT_POINT_MAX);
   1304 		RANGECHK(SCTP_BASE_SYSCTL(sctp_chunkscale), SCTPCTL_CHUNKSCALE_MIN, SCTPCTL_CHUNKSCALE_MAX);
   1305 		RANGECHK(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default), SCTPCTL_DELAYED_SACK_TIME_MIN, SCTPCTL_DELAYED_SACK_TIME_MAX);
   1306 		RANGECHK(SCTP_BASE_SYSCTL(sctp_sack_freq_default), SCTPCTL_SACK_FREQ_MIN, SCTPCTL_SACK_FREQ_MAX);
   1307 		RANGECHK(SCTP_BASE_SYSCTL(sctp_system_free_resc_limit), SCTPCTL_SYS_RESOURCE_MIN, SCTPCTL_SYS_RESOURCE_MAX);
   1308 		RANGECHK(SCTP_BASE_SYSCTL(sctp_asoc_free_resc_limit), SCTPCTL_ASOC_RESOURCE_MIN, SCTPCTL_ASOC_RESOURCE_MAX);
   1309 		RANGECHK(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default), SCTPCTL_HEARTBEAT_INTERVAL_MIN, SCTPCTL_HEARTBEAT_INTERVAL_MAX);
   1310 		RANGECHK(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default), SCTPCTL_PMTU_RAISE_TIME_MIN, SCTPCTL_PMTU_RAISE_TIME_MAX);
   1311 		RANGECHK(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default), SCTPCTL_SHUTDOWN_GUARD_TIME_MIN, SCTPCTL_SHUTDOWN_GUARD_TIME_MAX);
   1312 		RANGECHK(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default), SCTPCTL_SECRET_LIFETIME_MIN, SCTPCTL_SECRET_LIFETIME_MAX);
   1313 		RANGECHK(SCTP_BASE_SYSCTL(sctp_rto_max_default), SCTPCTL_RTO_MAX_MIN, SCTPCTL_RTO_MAX_MAX);
   1314 		RANGECHK(SCTP_BASE_SYSCTL(sctp_rto_min_default), SCTPCTL_RTO_MIN_MIN, SCTPCTL_RTO_MIN_MAX);
   1315 		RANGECHK(SCTP_BASE_SYSCTL(sctp_rto_initial_default), SCTPCTL_RTO_INITIAL_MIN, SCTPCTL_RTO_INITIAL_MAX);
   1316 		RANGECHK(SCTP_BASE_SYSCTL(sctp_init_rto_max_default), SCTPCTL_INIT_RTO_MAX_MIN, SCTPCTL_INIT_RTO_MAX_MAX);
   1317 		RANGECHK(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default), SCTPCTL_VALID_COOKIE_LIFE_MIN, SCTPCTL_VALID_COOKIE_LIFE_MAX);
   1318 		RANGECHK(SCTP_BASE_SYSCTL(sctp_init_rtx_max_default), SCTPCTL_INIT_RTX_MAX_MIN, SCTPCTL_INIT_RTX_MAX_MAX);
   1319 		RANGECHK(SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default), SCTPCTL_ASSOC_RTX_MAX_MIN, SCTPCTL_ASSOC_RTX_MAX_MAX);
   1320 		RANGECHK(SCTP_BASE_SYSCTL(sctp_path_rtx_max_default), SCTPCTL_PATH_RTX_MAX_MIN, SCTPCTL_PATH_RTX_MAX_MAX);
   1321 		RANGECHK(SCTP_BASE_SYSCTL(sctp_path_pf_threshold), SCTPCTL_PATH_PF_THRESHOLD_MIN, SCTPCTL_PATH_PF_THRESHOLD_MAX);
   1322 		RANGECHK(SCTP_BASE_SYSCTL(sctp_add_more_threshold), SCTPCTL_ADD_MORE_ON_OUTPUT_MIN, SCTPCTL_ADD_MORE_ON_OUTPUT_MAX);
   1323 		RANGECHK(SCTP_BASE_SYSCTL(sctp_nr_incoming_streams_default), SCTPCTL_INCOMING_STREAMS_MIN, SCTPCTL_INCOMING_STREAMS_MAX);
   1324 		RANGECHK(SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default), SCTPCTL_OUTGOING_STREAMS_MIN, SCTPCTL_OUTGOING_STREAMS_MAX);
   1325 		RANGECHK(SCTP_BASE_SYSCTL(sctp_cmt_on_off), SCTPCTL_CMT_ON_OFF_MIN, SCTPCTL_CMT_ON_OFF_MAX);
   1326 		RANGECHK(SCTP_BASE_SYSCTL(sctp_cmt_use_dac), SCTPCTL_CMT_USE_DAC_MIN, SCTPCTL_CMT_USE_DAC_MAX);
   1327 		RANGECHK(SCTP_BASE_SYSCTL(sctp_use_cwnd_based_maxburst), SCTPCTL_CWND_MAXBURST_MIN, SCTPCTL_CWND_MAXBURST_MAX);
   1328 		RANGECHK(SCTP_BASE_SYSCTL(sctp_nat_friendly), SCTPCTL_NAT_FRIENDLY_MIN, SCTPCTL_NAT_FRIENDLY_MAX);
   1329 		RANGECHK(SCTP_BASE_SYSCTL(sctp_L2_abc_variable), SCTPCTL_ABC_L_VAR_MIN, SCTPCTL_ABC_L_VAR_MAX);
   1330 		RANGECHK(SCTP_BASE_SYSCTL(sctp_mbuf_threshold_count), SCTPCTL_MAX_CHAINED_MBUFS_MIN, SCTPCTL_MAX_CHAINED_MBUFS_MAX);
   1331 		RANGECHK(SCTP_BASE_SYSCTL(sctp_do_drain), SCTPCTL_DO_SCTP_DRAIN_MIN, SCTPCTL_DO_SCTP_DRAIN_MAX);
   1332 		RANGECHK(SCTP_BASE_SYSCTL(sctp_hb_maxburst), SCTPCTL_HB_MAX_BURST_MIN, SCTPCTL_HB_MAX_BURST_MAX);
   1333 		RANGECHK(SCTP_BASE_SYSCTL(sctp_abort_if_one_2_one_hits_limit), SCTPCTL_ABORT_AT_LIMIT_MIN, SCTPCTL_ABORT_AT_LIMIT_MAX);
   1334 		RANGECHK(SCTP_BASE_SYSCTL(sctp_strict_data_order), SCTPCTL_STRICT_DATA_ORDER_MIN, SCTPCTL_STRICT_DATA_ORDER_MAX);
   1335 		RANGECHK(SCTP_BASE_SYSCTL(sctp_min_residual), SCTPCTL_MIN_RESIDUAL_MIN, SCTPCTL_MIN_RESIDUAL_MAX);
   1336 		RANGECHK(SCTP_BASE_SYSCTL(sctp_max_retran_chunk), SCTPCTL_MAX_RETRAN_CHUNK_MIN, SCTPCTL_MAX_RETRAN_CHUNK_MAX);
   1337 		RANGECHK(SCTP_BASE_SYSCTL(sctp_logging_level), SCTPCTL_LOGGING_LEVEL_MIN, SCTPCTL_LOGGING_LEVEL_MAX);
   1338 		RANGECHK(SCTP_BASE_SYSCTL(sctp_default_cc_module), SCTPCTL_DEFAULT_CC_MODULE_MIN, SCTPCTL_DEFAULT_CC_MODULE_MAX);
   1339 		RANGECHK(SCTP_BASE_SYSCTL(sctp_default_ss_module), SCTPCTL_DEFAULT_SS_MODULE_MIN, SCTPCTL_DEFAULT_SS_MODULE_MAX);
   1340 		RANGECHK(SCTP_BASE_SYSCTL(sctp_default_frag_interleave), SCTPCTL_DEFAULT_FRAG_INTERLEAVE_MIN, SCTPCTL_DEFAULT_FRAG_INTERLEAVE_MAX);
   1341 		RANGECHK(SCTP_BASE_SYSCTL(sctp_vtag_time_wait), SCTPCTL_TIME_WAIT_MIN, SCTPCTL_TIME_WAIT_MAX);
   1342 		RANGECHK(SCTP_BASE_SYSCTL(sctp_buffer_splitting), SCTPCTL_BUFFER_SPLITTING_MIN, SCTPCTL_BUFFER_SPLITTING_MAX);
   1343 		RANGECHK(SCTP_BASE_SYSCTL(sctp_initial_cwnd), SCTPCTL_INITIAL_CWND_MIN, SCTPCTL_INITIAL_CWND_MAX);
   1344 		RANGECHK(SCTP_BASE_SYSCTL(sctp_rttvar_bw), SCTPCTL_RTTVAR_BW_MIN, SCTPCTL_RTTVAR_BW_MAX);
   1345 		RANGECHK(SCTP_BASE_SYSCTL(sctp_rttvar_rtt), SCTPCTL_RTTVAR_RTT_MIN, SCTPCTL_RTTVAR_RTT_MAX);
   1346 		RANGECHK(SCTP_BASE_SYSCTL(sctp_rttvar_eqret), SCTPCTL_RTTVAR_EQRET_MIN, SCTPCTL_RTTVAR_EQRET_MAX);
   1347 		RANGECHK(SCTP_BASE_SYSCTL(sctp_steady_step), SCTPCTL_RTTVAR_STEADYS_MIN, SCTPCTL_RTTVAR_STEADYS_MAX);
   1348 		RANGECHK(SCTP_BASE_SYSCTL(sctp_use_dccc_ecn), SCTPCTL_RTTVAR_DCCCECN_MIN, SCTPCTL_RTTVAR_DCCCECN_MAX);
   1349 		RANGECHK(SCTP_BASE_SYSCTL(sctp_mobility_base), SCTPCTL_MOBILITY_BASE_MIN, SCTPCTL_MOBILITY_BASE_MAX);
   1350 		RANGECHK(SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff), SCTPCTL_MOBILITY_FASTHANDOFF_MIN, SCTPCTL_MOBILITY_FASTHANDOFF_MAX);
   1351 		RANGECHK(SCTP_BASE_SYSCTL(sctp_enable_sack_immediately), SCTPCTL_SACK_IMMEDIATELY_ENABLE_MIN, SCTPCTL_SACK_IMMEDIATELY_ENABLE_MAX);
   1352 		RANGECHK(SCTP_BASE_SYSCTL(sctp_inits_include_nat_friendly), SCTPCTL_NAT_FRIENDLY_INITS_MIN, SCTPCTL_NAT_FRIENDLY_INITS_MAX);
   1353 		RANGECHK(SCTP_BASE_SYSCTL(sctp_blackhole), SCTPCTL_BLACKHOLE_MIN, SCTPCTL_BLACKHOLE_MAX);
   1354 		RANGECHK(SCTP_BASE_SYSCTL(sctp_diag_info_code), SCTPCTL_DIAG_INFO_CODE_MIN, SCTPCTL_DIAG_INFO_CODE_MAX);
   1355 #ifdef SCTP_DEBUG
   1356 		RANGECHK(SCTP_BASE_SYSCTL(sctp_debug_on), SCTPCTL_DEBUG_MIN, SCTPCTL_DEBUG_MAX);
   1357 #endif
   1358 	}
   1359 	return (error);
   1360 }
   1361 
   1362 void
   1363 sysctl_setup_sctp(void)
   1364 {
   1365 	sysctl_add_oid(&sysctl_oid_top, "sendspace", CTLTYPE_INT|CTLFLAG_RW,
   1366             &SCTP_BASE_SYSCTL(sctp_sendspace), 0, sctp_sysctl_handle_int,
   1367 	    SCTPCTL_MAXDGRAM_DESC);
   1368 
   1369 	sysctl_add_oid(&sysctl_oid_top, "recvspace", CTLTYPE_INT|CTLFLAG_RW,
   1370            &SCTP_BASE_SYSCTL(sctp_recvspace), 0, sctp_sysctl_handle_int,
   1371 	    SCTPCTL_RECVSPACE_DESC);
   1372 
   1373 	sysctl_add_oid(&sysctl_oid_top, "auto_asconf", CTLTYPE_INT|CTLFLAG_RW,
   1374             &SCTP_BASE_SYSCTL(sctp_auto_asconf), 0, sctp_sysctl_handle_int,
   1375 	    SCTPCTL_AUTOASCONF_DESC);
   1376 
   1377 	sysctl_add_oid(&sysctl_oid_top, "ecn_enable", CTLTYPE_INT|CTLFLAG_RW,
   1378             &SCTP_BASE_SYSCTL(sctp_ecn_enable), 0, sctp_sysctl_handle_int,
   1379 	    SCTPCTL_ECN_ENABLE_DESC);
   1380 
   1381 	sysctl_add_oid(&sysctl_oid_top, "pr_enable", CTLTYPE_INT|CTLFLAG_RW,
   1382             &SCTP_BASE_SYSCTL(sctp_pr_enable), 0, sctp_sysctl_handle_int,
   1383 	    SCTPCTL_PR_ENABLE_DESC);
   1384 
   1385 	sysctl_add_oid(&sysctl_oid_top, "auth_enable", CTLTYPE_INT|CTLFLAG_RW,
   1386             &SCTP_BASE_SYSCTL(sctp_auth_enable), 0, sctp_sysctl_handle_auth,
   1387 	    SCTPCTL_AUTH_ENABLE_DESC);
   1388 
   1389 	sysctl_add_oid(&sysctl_oid_top, "asconf_enable", CTLTYPE_INT|CTLFLAG_RW,
   1390             &SCTP_BASE_SYSCTL(sctp_asconf_enable), 0, sctp_sysctl_handle_asconf,
   1391 	    SCTPCTL_ASCONF_ENABLE_DESC);
   1392 
   1393 	sysctl_add_oid(&sysctl_oid_top, "reconfig_enable", CTLTYPE_INT|CTLFLAG_RW,
   1394             &SCTP_BASE_SYSCTL(sctp_reconfig_enable), 0, sctp_sysctl_handle_int,
   1395 	    SCTPCTL_RECONFIG_ENABLE_DESC);
   1396 
   1397 	sysctl_add_oid(&sysctl_oid_top, "nrsack_enable", CTLTYPE_INT|CTLFLAG_RW,
   1398             &SCTP_BASE_SYSCTL(sctp_nrsack_enable), 0, sctp_sysctl_handle_int,
   1399 	    SCTPCTL_NRSACK_ENABLE_DESC);
   1400 
   1401 	sysctl_add_oid(&sysctl_oid_top, "pktdrop_enable", CTLTYPE_INT|CTLFLAG_RW,
   1402             &SCTP_BASE_SYSCTL(sctp_pktdrop_enable), 0, sctp_sysctl_handle_int,
   1403 	    SCTPCTL_PKTDROP_ENABLE_DESC);
   1404 
   1405 	sysctl_add_oid(&sysctl_oid_top, "strict_sacks", CTLTYPE_INT|CTLFLAG_RW,
   1406             &SCTP_BASE_SYSCTL(sctp_strict_sacks), 0, sctp_sysctl_handle_int,
   1407 	    SCTPCTL_STRICT_SACKS_DESC);
   1408 
   1409 #if !defined(SCTP_WITH_NO_CSUM)
   1410 	sysctl_add_oid(&sysctl_oid_top, "loopback_nocsum", CTLTYPE_INT|CTLFLAG_RW,
   1411             &SCTP_BASE_SYSCTL(sctp_no_csum_on_loopback), 0, sctp_sysctl_handle_int,
   1412 	    SCTPCTL_LOOPBACK_NOCSUM_DESC);
   1413 #endif
   1414 
   1415 	sysctl_add_oid(&sysctl_oid_top, "peer_chkoh", CTLTYPE_INT|CTLFLAG_RW,
   1416             &SCTP_BASE_SYSCTL(sctp_peer_chunk_oh), 0, sctp_sysctl_handle_int,
   1417 	    SCTPCTL_PEER_CHKOH_DESC);
   1418 
   1419 	sysctl_add_oid(&sysctl_oid_top, "maxburst", CTLTYPE_INT|CTLFLAG_RW,
   1420             &SCTP_BASE_SYSCTL(sctp_max_burst_default), 0, sctp_sysctl_handle_int,
   1421 	    SCTPCTL_MAXBURST_DESC);
   1422 
   1423 	sysctl_add_oid(&sysctl_oid_top, "fr_maxburst", CTLTYPE_INT|CTLFLAG_RW,
   1424             &SCTP_BASE_SYSCTL(sctp_fr_max_burst_default), 0, sctp_sysctl_handle_int,
   1425 	    SCTPCTL_FRMAXBURST_DESC);
   1426 
   1427 	sysctl_add_oid(&sysctl_oid_top, "maxchunks", CTLTYPE_INT|CTLFLAG_RW,
   1428             &SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue), 0, sctp_sysctl_handle_int,
   1429 	    SCTPCTL_MAXCHUNKS_DESC);
   1430 
   1431 	sysctl_add_oid(&sysctl_oid_top, "tcbhashsize", CTLTYPE_INT|CTLFLAG_RW,
   1432             &SCTP_BASE_SYSCTL(sctp_hashtblsize), 0, sctp_sysctl_handle_int,
   1433 	    SCTPCTL_TCBHASHSIZE_DESC);
   1434 
   1435 	sysctl_add_oid(&sysctl_oid_top, "pcbhashsize", CTLTYPE_INT|CTLFLAG_RW,
   1436             &SCTP_BASE_SYSCTL(sctp_pcbtblsize), 0, sctp_sysctl_handle_int,
   1437 	    SCTPCTL_PCBHASHSIZE_DESC);
   1438 
   1439 	sysctl_add_oid(&sysctl_oid_top, "min_split_point", CTLTYPE_INT|CTLFLAG_RW,
   1440             &SCTP_BASE_SYSCTL(sctp_min_split_point), 0, sctp_sysctl_handle_int,
   1441 	    SCTPCTL_MIN_SPLIT_POINT_DESC);
   1442 
   1443 	sysctl_add_oid(&sysctl_oid_top, "chunkscale", CTLTYPE_INT|CTLFLAG_RW,
   1444             &SCTP_BASE_SYSCTL(sctp_chunkscale), 0, sctp_sysctl_handle_int,
   1445 	    SCTPCTL_CHUNKSCALE_DESC);
   1446 
   1447 	sysctl_add_oid(&sysctl_oid_top, "delayed_sack_time", CTLTYPE_INT|CTLFLAG_RW,
   1448             &SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default), 0, sctp_sysctl_handle_int,
   1449 	    SCTPCTL_DELAYED_SACK_TIME_DESC);
   1450 
   1451 	sysctl_add_oid(&sysctl_oid_top, "sack_freq", CTLTYPE_INT|CTLFLAG_RW,
   1452             &SCTP_BASE_SYSCTL(sctp_sack_freq_default), 0, sctp_sysctl_handle_int,
   1453 	    SCTPCTL_SACK_FREQ_DESC);
   1454 
   1455 	sysctl_add_oid(&sysctl_oid_top, "sys_resource", CTLTYPE_INT|CTLFLAG_RW,
   1456             &SCTP_BASE_SYSCTL(sctp_system_free_resc_limit), 0, sctp_sysctl_handle_int,
   1457 	    SCTPCTL_SYS_RESOURCE_DESC);
   1458 
   1459 	sysctl_add_oid(&sysctl_oid_top, "asoc_resource", CTLTYPE_INT|CTLFLAG_RW,
   1460             &SCTP_BASE_SYSCTL(sctp_asoc_free_resc_limit), 0, sctp_sysctl_handle_int,
   1461 	    SCTPCTL_ASOC_RESOURCE_DESC);
   1462 
   1463 	sysctl_add_oid(&sysctl_oid_top, "heartbeat_interval", CTLTYPE_INT|CTLFLAG_RW,
   1464             &SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default), 0, sctp_sysctl_handle_int,
   1465 	    SCTPCTL_HEARTBEAT_INTERVAL_DESC);
   1466 
   1467 	sysctl_add_oid(&sysctl_oid_top, "pmtu_raise_time", CTLTYPE_INT|CTLFLAG_RW,
   1468             &SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default), 0, sctp_sysctl_handle_int,
   1469 	    SCTPCTL_PMTU_RAISE_TIME_DESC);
   1470 
   1471 	sysctl_add_oid(&sysctl_oid_top, "shutdown_guard_time", CTLTYPE_INT|CTLFLAG_RW,
   1472             &SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default), 0, sctp_sysctl_handle_int,
   1473 	    SCTPCTL_SHUTDOWN_GUARD_TIME_DESC);
   1474 
   1475 	sysctl_add_oid(&sysctl_oid_top, "secret_lifetime", CTLTYPE_INT|CTLFLAG_RW,
   1476             &SCTP_BASE_SYSCTL(sctp_secret_lifetime_default), 0, sctp_sysctl_handle_int,
   1477 	    SCTPCTL_SECRET_LIFETIME_DESC);
   1478 
   1479 	sysctl_add_oid(&sysctl_oid_top, "rto_max", CTLTYPE_INT|CTLFLAG_RW,
   1480             &SCTP_BASE_SYSCTL(sctp_rto_max_default), 0, sctp_sysctl_handle_int,
   1481 	    SCTPCTL_RTO_MAX_DESC);
   1482 
   1483 	sysctl_add_oid(&sysctl_oid_top, "rto_min", CTLTYPE_INT|CTLFLAG_RW,
   1484             &SCTP_BASE_SYSCTL(sctp_rto_min_default), 0, sctp_sysctl_handle_int,
   1485 	    SCTPCTL_RTO_MIN_DESC);
   1486 
   1487 	sysctl_add_oid(&sysctl_oid_top, "rto_initial", CTLTYPE_INT|CTLFLAG_RW,
   1488             &SCTP_BASE_SYSCTL(sctp_rto_initial_default), 0, sctp_sysctl_handle_int,
   1489 	    SCTPCTL_RTO_INITIAL_DESC);
   1490 
   1491 	sysctl_add_oid(&sysctl_oid_top, "init_rto_max", CTLTYPE_INT|CTLFLAG_RW,
   1492             &SCTP_BASE_SYSCTL(sctp_init_rto_max_default), 0, sctp_sysctl_handle_int,
   1493 	    SCTPCTL_INIT_RTO_MAX_DESC);
   1494 
   1495 	sysctl_add_oid(&sysctl_oid_top, "valid_cookie_life", CTLTYPE_INT|CTLFLAG_RW,
   1496             &SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default), 0, sctp_sysctl_handle_int,
   1497 	    SCTPCTL_VALID_COOKIE_LIFE_DESC);
   1498 
   1499 	sysctl_add_oid(&sysctl_oid_top, "init_rtx_max", CTLTYPE_INT|CTLFLAG_RW,
   1500             &SCTP_BASE_SYSCTL(sctp_init_rtx_max_default), 0, sctp_sysctl_handle_int,
   1501 	    SCTPCTL_INIT_RTX_MAX_DESC);
   1502 
   1503 	sysctl_add_oid(&sysctl_oid_top, "assoc_rtx_max", CTLTYPE_INT|CTLFLAG_RW,
   1504             &SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default), 0, sctp_sysctl_handle_int,
   1505 	    SCTPCTL_ASSOC_RTX_MAX_DESC);
   1506 
   1507 	sysctl_add_oid(&sysctl_oid_top, "path_rtx_max", CTLTYPE_INT|CTLFLAG_RW,
   1508             &SCTP_BASE_SYSCTL(sctp_path_rtx_max_default), 0, sctp_sysctl_handle_int,
   1509 	    SCTPCTL_PATH_RTX_MAX_DESC);
   1510 
   1511 	sysctl_add_oid(&sysctl_oid_top, "path_pf_threshold", CTLTYPE_INT|CTLFLAG_RW,
   1512 	    &SCTP_BASE_SYSCTL(sctp_path_pf_threshold), 0, sctp_sysctl_handle_int,
   1513 	    SCTPCTL_PATH_PF_THRESHOLD_DESC);
   1514 
   1515 	sysctl_add_oid(&sysctl_oid_top, "add_more_on_output", CTLTYPE_INT|CTLFLAG_RW,
   1516             &SCTP_BASE_SYSCTL(sctp_add_more_threshold), 0, sctp_sysctl_handle_int,
   1517 	    SCTPCTL_ADD_MORE_ON_OUTPUT_DESC);
   1518 
   1519 	sysctl_add_oid(&sysctl_oid_top, "incoming_streams", CTLTYPE_INT|CTLFLAG_RW,
   1520             &SCTP_BASE_SYSCTL(sctp_nr_incoming_streams_default), 0, sctp_sysctl_handle_int,
   1521 	    SCTPCTL_INCOMING_STREAMS_DESC);
   1522 
   1523 	sysctl_add_oid(&sysctl_oid_top, "outgoing_streams", CTLTYPE_INT|CTLFLAG_RW,
   1524             &SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default), 0, sctp_sysctl_handle_int,
   1525 	    SCTPCTL_OUTGOING_STREAMS_DESC);
   1526 
   1527 	sysctl_add_oid(&sysctl_oid_top, "cmt_on_off", CTLTYPE_INT|CTLFLAG_RW,
   1528             &SCTP_BASE_SYSCTL(sctp_cmt_on_off), 0, sctp_sysctl_handle_int,
   1529 	    SCTPCTL_CMT_ON_OFF_DESC);
   1530 
   1531 	sysctl_add_oid(&sysctl_oid_top, "cmt_use_dac", CTLTYPE_INT|CTLFLAG_RW,
   1532             &SCTP_BASE_SYSCTL(sctp_cmt_use_dac), 0, sctp_sysctl_handle_int,
   1533 	    SCTPCTL_CMT_USE_DAC_DESC);
   1534 
   1535 	sysctl_add_oid(&sysctl_oid_top, "cwnd_maxburst", CTLTYPE_INT|CTLFLAG_RW,
   1536             &SCTP_BASE_SYSCTL(sctp_use_cwnd_based_maxburst), 0, sctp_sysctl_handle_int,
   1537 	    SCTPCTL_CWND_MAXBURST_DESC);
   1538 
   1539 	sysctl_add_oid(&sysctl_oid_top, "nat_friendly", CTLTYPE_INT|CTLFLAG_RW,
   1540             &SCTP_BASE_SYSCTL(sctp_nat_friendly), 0, sctp_sysctl_handle_int,
   1541 	    SCTPCTL_NAT_FRIENDLY_DESC);
   1542 
   1543 	sysctl_add_oid(&sysctl_oid_top, "abc_l_var", CTLTYPE_INT|CTLFLAG_RW,
   1544             &SCTP_BASE_SYSCTL(sctp_L2_abc_variable), 0, sctp_sysctl_handle_int,
   1545 	    SCTPCTL_ABC_L_VAR_DESC);
   1546 
   1547 	sysctl_add_oid(&sysctl_oid_top, "max_chained_mbufs", CTLTYPE_INT|CTLFLAG_RW,
   1548             &SCTP_BASE_SYSCTL(sctp_mbuf_threshold_count), 0, sctp_sysctl_handle_int,
   1549 	    SCTPCTL_MAX_CHAINED_MBUFS_DESC);
   1550 
   1551 	sysctl_add_oid(&sysctl_oid_top, "do_sctp_drain", CTLTYPE_INT|CTLFLAG_RW,
   1552             &SCTP_BASE_SYSCTL(sctp_do_drain), 0, sctp_sysctl_handle_int,
   1553 	    SCTPCTL_DO_SCTP_DRAIN_DESC);
   1554 
   1555 	sysctl_add_oid(&sysctl_oid_top, "hb_max_burst", CTLTYPE_INT|CTLFLAG_RW,
   1556             &SCTP_BASE_SYSCTL(sctp_hb_maxburst), 0, sctp_sysctl_handle_int,
   1557 	    SCTPCTL_HB_MAX_BURST_DESC);
   1558 
   1559 	sysctl_add_oid(&sysctl_oid_top, "abort_at_limit", CTLTYPE_INT|CTLFLAG_RW,
   1560             &SCTP_BASE_SYSCTL(sctp_abort_if_one_2_one_hits_limit), 0, sctp_sysctl_handle_int,
   1561 	    SCTPCTL_ABORT_AT_LIMIT_DESC);
   1562 
   1563 	sysctl_add_oid(&sysctl_oid_top, "strict_data_order", CTLTYPE_INT|CTLFLAG_RW,
   1564             &SCTP_BASE_SYSCTL(sctp_strict_data_order), 0, sctp_sysctl_handle_int,
   1565 	    SCTPCTL_STRICT_DATA_ORDER_DESC);
   1566 
   1567 	sysctl_add_oid(&sysctl_oid_top, "min_residual", CTLTYPE_INT|CTLFLAG_RW,
   1568             &SCTP_BASE_SYSCTL(sctp_min_residual), 0, sctp_sysctl_handle_int,
   1569 	    SCTPCTL_MIN_RESIDUAL_DESC);
   1570 
   1571 	sysctl_add_oid(&sysctl_oid_top, "max_retran_chunk", CTLTYPE_INT|CTLFLAG_RW,
   1572             &SCTP_BASE_SYSCTL(sctp_max_retran_chunk), 0, sctp_sysctl_handle_int,
   1573 	    SCTPCTL_MAX_RETRAN_CHUNK_DESC);
   1574 
   1575 	sysctl_add_oid(&sysctl_oid_top, "log_level", CTLTYPE_INT|CTLFLAG_RW,
   1576             &SCTP_BASE_SYSCTL(sctp_logging_level), 0, sctp_sysctl_handle_int,
   1577 	    SCTPCTL_LOGGING_LEVEL_DESC);
   1578 
   1579 	sysctl_add_oid(&sysctl_oid_top, "default_cc_module", CTLTYPE_INT|CTLFLAG_RW,
   1580             &SCTP_BASE_SYSCTL(sctp_default_cc_module), 0, sctp_sysctl_handle_int,
   1581 	    SCTPCTL_DEFAULT_CC_MODULE_DESC);
   1582 
   1583 	sysctl_add_oid(&sysctl_oid_top, "default_ss_module", CTLTYPE_INT|CTLFLAG_RW,
   1584             &SCTP_BASE_SYSCTL(sctp_default_ss_module), 0, sctp_sysctl_handle_int,
   1585 	    SCTPCTL_DEFAULT_SS_MODULE_DESC);
   1586 
   1587 	sysctl_add_oid(&sysctl_oid_top, "default_frag_interleave", CTLTYPE_INT|CTLFLAG_RW,
   1588             &SCTP_BASE_SYSCTL(sctp_default_frag_interleave), 0, sctp_sysctl_handle_int,
   1589 	    SCTPCTL_DEFAULT_FRAG_INTERLEAVE_DESC);
   1590 
   1591 	sysctl_add_oid(&sysctl_oid_top, "mobility_base", CTLTYPE_INT|CTLFLAG_RW,
   1592             &SCTP_BASE_SYSCTL(sctp_mobility_base), 0, sctp_sysctl_handle_int,
   1593 	    SCTPCTL_MOBILITY_BASE_DESC);
   1594 
   1595 	sysctl_add_oid(&sysctl_oid_top, "mobility_fasthandoff", CTLTYPE_INT|CTLFLAG_RW,
   1596             &SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff), 0, sctp_sysctl_handle_int,
   1597 	    SCTPCTL_MOBILITY_FASTHANDOFF_DESC);
   1598 
   1599 #if defined(SCTP_LOCAL_TRACE_BUF)
   1600 	sysctl_add_oid(&sysctl_oid_top, "sctp_log", CTLTYPE_STRUCT|CTLFLAG_RD,
   1601 	    SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log), NULL,
   1602 	    "SCTP logging (struct sctp_log)");
   1603 
   1604 	sysctl_add_oid(&sysctl_oid_top, "clear_trace", CTLTYPE_INT|CTLFLAG_WR,
   1605 	    NULL, 0, sctp_sysctl_handle_trace_log_clear,
   1606 	    "Clear SCTP Logging buffer");
   1607 #endif
   1608 
   1609 	sysctl_add_oid(&sysctl_oid_top, "udp_tunneling_port", CTLTYPE_INT|CTLFLAG_RW,
   1610 	    &SCTP_BASE_SYSCTL(sctp_udp_tunneling_port), 0, sctp_sysctl_handle_udp_tunneling,
   1611 	    SCTPCTL_UDP_TUNNELING_PORT_DESC);
   1612 
   1613 	sysctl_add_oid(&sysctl_oid_top, "enable_sack_immediately", CTLTYPE_INT|CTLFLAG_RW,
   1614             &SCTP_BASE_SYSCTL(sctp_enable_sack_immediately), 0, sctp_sysctl_handle_int,
   1615 	    SCTPCTL_SACK_IMMEDIATELY_ENABLE_DESC);
   1616 
   1617 	sysctl_add_oid(&sysctl_oid_top, "nat_friendly_init", CTLTYPE_INT|CTLFLAG_RW,
   1618             &SCTP_BASE_SYSCTL(sctp_inits_include_nat_friendly), 0, sctp_sysctl_handle_int,
   1619 	    SCTPCTL_NAT_FRIENDLY_DESC);
   1620 
   1621 	sysctl_add_oid(&sysctl_oid_top, "vtag_time_wait", CTLTYPE_INT|CTLFLAG_RW,
   1622             &SCTP_BASE_SYSCTL(sctp_vtag_time_wait), 0, sctp_sysctl_handle_int,
   1623 	    SCTPCTL_TIME_WAIT_DESC);
   1624 
   1625 	sysctl_add_oid(&sysctl_oid_top, "buffer_splitting", CTLTYPE_INT|CTLFLAG_RW,
   1626             &SCTP_BASE_SYSCTL(sctp_buffer_splitting), 0, sctp_sysctl_handle_int,
   1627 	    SCTPCTL_BUFFER_SPLITTING_DESC);
   1628 
   1629 	sysctl_add_oid(&sysctl_oid_top, "initial_cwnd", CTLTYPE_INT|CTLFLAG_RW,
   1630             &SCTP_BASE_SYSCTL(sctp_initial_cwnd), 0, sctp_sysctl_handle_int,
   1631 	    SCTPCTL_INITIAL_CWND_DESC);
   1632 
   1633 	sysctl_add_oid(&sysctl_oid_top, "rttvar_bw", CTLTYPE_INT|CTLFLAG_RW,
   1634             &SCTP_BASE_SYSCTL(sctp_rttvar_bw), 0, sctp_sysctl_handle_int,
   1635 	    SCTPCTL_RTTVAR_BW_DESC);
   1636 
   1637 	sysctl_add_oid(&sysctl_oid_top, "rttvar_rtt", CTLTYPE_INT|CTLFLAG_RW,
   1638             &SCTP_BASE_SYSCTL(sctp_rttvar_rtt), 0, sctp_sysctl_handle_int,
   1639 	    SCTPCTL_RTTVAR_RTT_DESC);
   1640 
   1641 	sysctl_add_oid(&sysctl_oid_top, "rttvar_eqret", CTLTYPE_INT|CTLFLAG_RW,
   1642             &SCTP_BASE_SYSCTL(sctp_rttvar_eqret), 0, sctp_sysctl_handle_int,
   1643 	    SCTPCTL_RTTVAR_EQRET_DESC);
   1644 
   1645 	sysctl_add_oid(&sysctl_oid_top, "rttvar_steady_step", CTLTYPE_INT|CTLFLAG_RW,
   1646             &SCTP_BASE_SYSCTL(sctp_steady_step), 0, sctp_sysctl_handle_int,
   1647 	    SCTPCTL_RTTVAR_STEADYS_DESC);
   1648 
   1649 	sysctl_add_oid(&sysctl_oid_top, "use_dcccecn", CTLTYPE_INT|CTLFLAG_RW,
   1650             &SCTP_BASE_SYSCTL(sctp_use_dccc_ecn), 0, sctp_sysctl_handle_int,
   1651 	    SCTPCTL_RTTVAR_DCCCECN_DESC);
   1652 
   1653 	sysctl_add_oid(&sysctl_oid_top, "blackhole", CTLTYPE_INT|CTLFLAG_RW,
   1654             &SCTP_BASE_SYSCTL(sctp_blackhole), 0, sctp_sysctl_handle_int,
   1655             SCTPCTL_BLACKHOLE_DESC);
   1656 
   1657 	sysctl_add_oid(&sysctl_oid_top, "diag_info_code", CTLTYPE_INT|CTLFLAG_RW,
   1658             &SCTP_BASE_SYSCTL(sctp_diag_info_code), 0, sctp_sysctl_handle_int,
   1659             SCTPCTL_DIAG_INFO_CODE_DESC);
   1660 
   1661 #ifdef SCTP_DEBUG
   1662 	sysctl_add_oid(&sysctl_oid_top, "debug", CTLTYPE_INT|CTLFLAG_RW,
   1663 	    &SCTP_BASE_SYSCTL(sctp_debug_on), 0, sctp_sysctl_handle_int,
   1664 	    SCTPCTL_DEBUG_DESC);
   1665 #endif
   1666 
   1667 	sysctl_add_oid(&sysctl_oid_top, "stats", CTLTYPE_STRUCT|CTLFLAG_RW,
   1668 	    &SCTP_BASE_STATS, sizeof(SCTP_BASE_STATS), NULL,
   1669 	    "SCTP statistics (struct sctp_stat)");
   1670 
   1671 	sysctl_add_oid(&sysctl_oid_top, "assoclist", CTLTYPE_STRUCT|CTLFLAG_RD,
   1672 	    NULL, 0, sctp_assoclist,
   1673 	    "List of active SCTP associations");
   1674 }
   1675 #endif
   1676 #endif
   1677