xref: /freebsd/sys/netinet/sctp_sysctl.c (revision 5dcd9c10612684d1c823670cbb5b4715028784e7)
1 /*-
2  * Copyright (c) 2007, by Cisco Systems, Inc. All rights reserved.
3  * Copyright (c) 2008-2011, by Randall Stewart. All rights reserved.
4  * Copyright (c) 2008-2011, by Michael Tuexen. All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions are met:
8  *
9  * a) Redistributions of source code must retain the above copyright notice,
10  *   this list of conditions and the following disclaimer.
11  *
12  * b) Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in
14  *   the documentation and/or other materials provided with the distribution.
15  *
16  * c) Neither the name of Cisco Systems, Inc. nor the names of its
17  *    contributors may be used to endorse or promote products derived
18  *    from this software without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30  * THE POSSIBILITY OF SUCH DAMAGE.
31  */
32 
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
35 
36 #include <netinet/sctp_os.h>
37 #include <netinet/sctp.h>
38 #include <netinet/sctp_constants.h>
39 #include <netinet/sctp_sysctl.h>
40 #include <netinet/sctp_pcb.h>
41 #include <netinet/sctputil.h>
42 #include <netinet/sctp_output.h>
43 #include <sys/smp.h>
44 
45 /*
46  * sysctl tunable variables
47  */
48 
49 void
50 sctp_init_sysctls()
51 {
52 	SCTP_BASE_SYSCTL(sctp_sendspace) = SCTPCTL_MAXDGRAM_DEFAULT;
53 	SCTP_BASE_SYSCTL(sctp_recvspace) = SCTPCTL_RECVSPACE_DEFAULT;
54 	SCTP_BASE_SYSCTL(sctp_auto_asconf) = SCTPCTL_AUTOASCONF_DEFAULT;
55 	SCTP_BASE_SYSCTL(sctp_multiple_asconfs) = SCTPCTL_MULTIPLEASCONFS_DEFAULT;
56 	SCTP_BASE_SYSCTL(sctp_ecn_enable) = SCTPCTL_ECN_ENABLE_DEFAULT;
57 	SCTP_BASE_SYSCTL(sctp_strict_sacks) = SCTPCTL_STRICT_SACKS_DEFAULT;
58 #if !defined(SCTP_WITH_NO_CSUM)
59 	SCTP_BASE_SYSCTL(sctp_no_csum_on_loopback) = SCTPCTL_LOOPBACK_NOCSUM_DEFAULT;
60 #endif
61 	SCTP_BASE_SYSCTL(sctp_strict_init) = SCTPCTL_STRICT_INIT_DEFAULT;
62 	SCTP_BASE_SYSCTL(sctp_peer_chunk_oh) = SCTPCTL_PEER_CHKOH_DEFAULT;
63 	SCTP_BASE_SYSCTL(sctp_max_burst_default) = SCTPCTL_MAXBURST_DEFAULT;
64 	SCTP_BASE_SYSCTL(sctp_fr_max_burst_default) = SCTPCTL_FRMAXBURST_DEFAULT;
65 	SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue) = SCTPCTL_MAXCHUNKS_DEFAULT;
66 	SCTP_BASE_SYSCTL(sctp_hashtblsize) = SCTPCTL_TCBHASHSIZE_DEFAULT;
67 	SCTP_BASE_SYSCTL(sctp_pcbtblsize) = SCTPCTL_PCBHASHSIZE_DEFAULT;
68 	SCTP_BASE_SYSCTL(sctp_min_split_point) = SCTPCTL_MIN_SPLIT_POINT_DEFAULT;
69 	SCTP_BASE_SYSCTL(sctp_chunkscale) = SCTPCTL_CHUNKSCALE_DEFAULT;
70 	SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default) = SCTPCTL_DELAYED_SACK_TIME_DEFAULT;
71 	SCTP_BASE_SYSCTL(sctp_sack_freq_default) = SCTPCTL_SACK_FREQ_DEFAULT;
72 	SCTP_BASE_SYSCTL(sctp_system_free_resc_limit) = SCTPCTL_SYS_RESOURCE_DEFAULT;
73 	SCTP_BASE_SYSCTL(sctp_asoc_free_resc_limit) = SCTPCTL_ASOC_RESOURCE_DEFAULT;
74 	SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default) = SCTPCTL_HEARTBEAT_INTERVAL_DEFAULT;
75 	SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default) = SCTPCTL_PMTU_RAISE_TIME_DEFAULT;
76 	SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default) = SCTPCTL_SHUTDOWN_GUARD_TIME_DEFAULT;
77 	SCTP_BASE_SYSCTL(sctp_secret_lifetime_default) = SCTPCTL_SECRET_LIFETIME_DEFAULT;
78 	SCTP_BASE_SYSCTL(sctp_rto_max_default) = SCTPCTL_RTO_MAX_DEFAULT;
79 	SCTP_BASE_SYSCTL(sctp_rto_min_default) = SCTPCTL_RTO_MIN_DEFAULT;
80 	SCTP_BASE_SYSCTL(sctp_rto_initial_default) = SCTPCTL_RTO_INITIAL_DEFAULT;
81 	SCTP_BASE_SYSCTL(sctp_init_rto_max_default) = SCTPCTL_INIT_RTO_MAX_DEFAULT;
82 	SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default) = SCTPCTL_VALID_COOKIE_LIFE_DEFAULT;
83 	SCTP_BASE_SYSCTL(sctp_init_rtx_max_default) = SCTPCTL_INIT_RTX_MAX_DEFAULT;
84 	SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default) = SCTPCTL_ASSOC_RTX_MAX_DEFAULT;
85 	SCTP_BASE_SYSCTL(sctp_path_rtx_max_default) = SCTPCTL_PATH_RTX_MAX_DEFAULT;
86 	SCTP_BASE_SYSCTL(sctp_add_more_threshold) = SCTPCTL_ADD_MORE_ON_OUTPUT_DEFAULT;
87 	SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default) = SCTPCTL_OUTGOING_STREAMS_DEFAULT;
88 	SCTP_BASE_SYSCTL(sctp_cmt_on_off) = SCTPCTL_CMT_ON_OFF_DEFAULT;
89 	/* EY */
90 	SCTP_BASE_SYSCTL(sctp_nr_sack_on_off) = SCTPCTL_NR_SACK_ON_OFF_DEFAULT;
91 	SCTP_BASE_SYSCTL(sctp_cmt_use_dac) = SCTPCTL_CMT_USE_DAC_DEFAULT;
92 	SCTP_BASE_SYSCTL(sctp_cmt_pf) = SCTPCTL_CMT_PF_DEFAULT;
93 	SCTP_BASE_SYSCTL(sctp_use_cwnd_based_maxburst) = SCTPCTL_CWND_MAXBURST_DEFAULT;
94 	SCTP_BASE_SYSCTL(sctp_early_fr) = SCTPCTL_EARLY_FAST_RETRAN_DEFAULT;
95 	SCTP_BASE_SYSCTL(sctp_early_fr_msec) = SCTPCTL_EARLY_FAST_RETRAN_MSEC_DEFAULT;
96 	SCTP_BASE_SYSCTL(sctp_asconf_auth_nochk) = SCTPCTL_ASCONF_AUTH_NOCHK_DEFAULT;
97 	SCTP_BASE_SYSCTL(sctp_auth_disable) = SCTPCTL_AUTH_DISABLE_DEFAULT;
98 	SCTP_BASE_SYSCTL(sctp_nat_friendly) = SCTPCTL_NAT_FRIENDLY_DEFAULT;
99 	SCTP_BASE_SYSCTL(sctp_L2_abc_variable) = SCTPCTL_ABC_L_VAR_DEFAULT;
100 	SCTP_BASE_SYSCTL(sctp_mbuf_threshold_count) = SCTPCTL_MAX_CHAINED_MBUFS_DEFAULT;
101 	SCTP_BASE_SYSCTL(sctp_do_drain) = SCTPCTL_DO_SCTP_DRAIN_DEFAULT;
102 	SCTP_BASE_SYSCTL(sctp_hb_maxburst) = SCTPCTL_HB_MAX_BURST_DEFAULT;
103 	SCTP_BASE_SYSCTL(sctp_abort_if_one_2_one_hits_limit) = SCTPCTL_ABORT_AT_LIMIT_DEFAULT;
104 	SCTP_BASE_SYSCTL(sctp_strict_data_order) = SCTPCTL_STRICT_DATA_ORDER_DEFAULT;
105 	SCTP_BASE_SYSCTL(sctp_min_residual) = SCTPCTL_MIN_RESIDUAL_DEFAULT;
106 	SCTP_BASE_SYSCTL(sctp_max_retran_chunk) = SCTPCTL_MAX_RETRAN_CHUNK_DEFAULT;
107 	SCTP_BASE_SYSCTL(sctp_logging_level) = SCTPCTL_LOGGING_LEVEL_DEFAULT;
108 	/* JRS - Variable for default congestion control module */
109 	SCTP_BASE_SYSCTL(sctp_default_cc_module) = SCTPCTL_DEFAULT_CC_MODULE_DEFAULT;
110 	/* RS - Variable for default stream scheduling module */
111 	SCTP_BASE_SYSCTL(sctp_default_ss_module) = SCTPCTL_DEFAULT_SS_MODULE_DEFAULT;
112 	SCTP_BASE_SYSCTL(sctp_default_frag_interleave) = SCTPCTL_DEFAULT_FRAG_INTERLEAVE_DEFAULT;
113 	SCTP_BASE_SYSCTL(sctp_mobility_base) = SCTPCTL_MOBILITY_BASE_DEFAULT;
114 	SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) = SCTPCTL_MOBILITY_FASTHANDOFF_DEFAULT;
115 	SCTP_BASE_SYSCTL(sctp_vtag_time_wait) = SCTPCTL_TIME_WAIT_DEFAULT;
116 	SCTP_BASE_SYSCTL(sctp_buffer_splitting) = SCTPCTL_BUFFER_SPLITTING_DEFAULT;
117 	SCTP_BASE_SYSCTL(sctp_initial_cwnd) = SCTPCTL_INITIAL_CWND_DEFAULT;
118 	SCTP_BASE_SYSCTL(sctp_rttvar_bw) = SCTPCTL_RTTVAR_BW_DEFAULT;
119 	SCTP_BASE_SYSCTL(sctp_rttvar_rtt) = SCTPCTL_RTTVAR_RTT_DEFAULT;
120 	SCTP_BASE_SYSCTL(sctp_rttvar_eqret) = SCTPCTL_RTTVAR_EQRET_DEFAULT;
121 #if defined(SCTP_LOCAL_TRACE_BUF)
122 	memset(&SCTP_BASE_SYSCTL(sctp_log), 0, sizeof(struct sctp_log));
123 #endif
124 	SCTP_BASE_SYSCTL(sctp_udp_tunneling_for_client_enable) = SCTPCTL_UDP_TUNNELING_FOR_CLIENT_ENABLE_DEFAULT;
125 	SCTP_BASE_SYSCTL(sctp_udp_tunneling_port) = SCTPCTL_UDP_TUNNELING_PORT_DEFAULT;
126 	SCTP_BASE_SYSCTL(sctp_enable_sack_immediately) = SCTPCTL_SACK_IMMEDIATELY_ENABLE_DEFAULT;
127 	SCTP_BASE_SYSCTL(sctp_inits_include_nat_friendly) = SCTPCTL_NAT_FRIENDLY_INITS_DEFAULT;
128 #if defined(SCTP_DEBUG)
129 	SCTP_BASE_SYSCTL(sctp_debug_on) = SCTPCTL_DEBUG_DEFAULT;
130 #endif
131 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
132 	SCTP_BASE_SYSCTL(sctp_output_unlocked) = SCTPCTL_OUTPUT_UNLOCKED_DEFAULT;
133 #endif
134 }
135 
136 
137 /* It returns an upper limit. No filtering is done here */
138 static unsigned int
139 number_of_addresses(struct sctp_inpcb *inp)
140 {
141 	int cnt;
142 	struct sctp_vrf *vrf;
143 	struct sctp_ifn *sctp_ifn;
144 	struct sctp_ifa *sctp_ifa;
145 	struct sctp_laddr *laddr;
146 
147 	cnt = 0;
148 	/* neither Mac OS X nor FreeBSD support mulitple routing functions */
149 	if ((vrf = sctp_find_vrf(inp->def_vrf_id)) == NULL) {
150 		return (0);
151 	}
152 	if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
153 		LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
154 			LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
155 				if ((sctp_ifa->address.sa.sa_family == AF_INET) ||
156 				    (sctp_ifa->address.sa.sa_family == AF_INET6)) {
157 					cnt++;
158 				}
159 			}
160 		}
161 	} else {
162 		LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
163 			if ((laddr->ifa->address.sa.sa_family == AF_INET) ||
164 			    (laddr->ifa->address.sa.sa_family == AF_INET6)) {
165 				cnt++;
166 			}
167 		}
168 	}
169 	return (cnt);
170 }
171 
172 static int
173 copy_out_local_addresses(struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sysctl_req *req)
174 {
175 	struct sctp_ifn *sctp_ifn;
176 	struct sctp_ifa *sctp_ifa;
177 	int loopback_scope, ipv4_local_scope, local_scope, site_scope;
178 	int ipv4_addr_legal, ipv6_addr_legal;
179 	struct sctp_vrf *vrf;
180 	struct xsctp_laddr xladdr;
181 	struct sctp_laddr *laddr;
182 	int error;
183 
184 	/* Turn on all the appropriate scope */
185 	if (stcb) {
186 		/* use association specific values */
187 		loopback_scope = stcb->asoc.loopback_scope;
188 		ipv4_local_scope = stcb->asoc.ipv4_local_scope;
189 		local_scope = stcb->asoc.local_scope;
190 		site_scope = stcb->asoc.site_scope;
191 	} else {
192 		/* use generic values for endpoints */
193 		loopback_scope = 1;
194 		ipv4_local_scope = 1;
195 		local_scope = 1;
196 		site_scope = 1;
197 	}
198 
199 	/* use only address families of interest */
200 	if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
201 		ipv6_addr_legal = 1;
202 		if (SCTP_IPV6_V6ONLY(inp)) {
203 			ipv4_addr_legal = 0;
204 		} else {
205 			ipv4_addr_legal = 1;
206 		}
207 	} else {
208 		ipv4_addr_legal = 1;
209 		ipv6_addr_legal = 0;
210 	}
211 
212 	/* neither Mac OS X nor FreeBSD support mulitple routing functions */
213 	if ((vrf = sctp_find_vrf(inp->def_vrf_id)) == NULL) {
214 		SCTP_INP_RUNLOCK(inp);
215 		SCTP_INP_INFO_RUNLOCK();
216 		return (-1);
217 	}
218 	if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
219 		LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
220 			if ((loopback_scope == 0) && SCTP_IFN_IS_IFT_LOOP(sctp_ifn))
221 				/* Skip loopback if loopback_scope not set */
222 				continue;
223 			LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
224 				if (stcb) {
225 					/*
226 					 * ignore if blacklisted at
227 					 * association level
228 					 */
229 					if (sctp_is_addr_restricted(stcb, sctp_ifa))
230 						continue;
231 				}
232 				switch (sctp_ifa->address.sa.sa_family) {
233 				case AF_INET:
234 					if (ipv4_addr_legal) {
235 						struct sockaddr_in *sin;
236 
237 						sin = (struct sockaddr_in *)&sctp_ifa->address.sa;
238 						if (sin->sin_addr.s_addr == 0)
239 							continue;
240 						if ((ipv4_local_scope == 0) && (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)))
241 							continue;
242 					} else {
243 						continue;
244 					}
245 					break;
246 #ifdef INET6
247 				case AF_INET6:
248 					if (ipv6_addr_legal) {
249 						struct sockaddr_in6 *sin6;
250 
251 						sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa;
252 						if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
253 							continue;
254 						if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
255 							if (local_scope == 0)
256 								continue;
257 							if (sin6->sin6_scope_id == 0) {
258 								/*
259 								 * bad link
260 								 * local
261 								 * address
262 								 */
263 								if (sa6_recoverscope(sin6) != 0)
264 									continue;
265 							}
266 						}
267 						if ((site_scope == 0) && (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)))
268 							continue;
269 					} else {
270 						continue;
271 					}
272 					break;
273 #endif
274 				default:
275 					continue;
276 				}
277 				memset((void *)&xladdr, 0, sizeof(struct xsctp_laddr));
278 				memcpy((void *)&xladdr.address, (const void *)&sctp_ifa->address, sizeof(union sctp_sockstore));
279 				SCTP_INP_RUNLOCK(inp);
280 				SCTP_INP_INFO_RUNLOCK();
281 				error = SYSCTL_OUT(req, &xladdr, sizeof(struct xsctp_laddr));
282 				if (error) {
283 					return (error);
284 				} else {
285 					SCTP_INP_INFO_RLOCK();
286 					SCTP_INP_RLOCK(inp);
287 				}
288 			}
289 		}
290 	} else {
291 		LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
292 			/* ignore if blacklisted at association level */
293 			if (stcb && sctp_is_addr_restricted(stcb, laddr->ifa))
294 				continue;
295 			memset((void *)&xladdr, 0, sizeof(struct xsctp_laddr));
296 			memcpy((void *)&xladdr.address, (const void *)&laddr->ifa->address, sizeof(union sctp_sockstore));
297 			xladdr.start_time.tv_sec = (uint32_t) laddr->start_time.tv_sec;
298 			xladdr.start_time.tv_usec = (uint32_t) laddr->start_time.tv_usec;
299 			SCTP_INP_RUNLOCK(inp);
300 			SCTP_INP_INFO_RUNLOCK();
301 			error = SYSCTL_OUT(req, &xladdr, sizeof(struct xsctp_laddr));
302 			if (error) {
303 				return (error);
304 			} else {
305 				SCTP_INP_INFO_RLOCK();
306 				SCTP_INP_RLOCK(inp);
307 			}
308 		}
309 	}
310 	memset((void *)&xladdr, 0, sizeof(struct xsctp_laddr));
311 	xladdr.last = 1;
312 	SCTP_INP_RUNLOCK(inp);
313 	SCTP_INP_INFO_RUNLOCK();
314 	error = SYSCTL_OUT(req, &xladdr, sizeof(struct xsctp_laddr));
315 
316 	if (error) {
317 		return (error);
318 	} else {
319 		SCTP_INP_INFO_RLOCK();
320 		SCTP_INP_RLOCK(inp);
321 		return (0);
322 	}
323 }
324 
325 /*
326  * sysctl functions
327  */
328 static int
329 sctp_assoclist(SYSCTL_HANDLER_ARGS)
330 {
331 	unsigned int number_of_endpoints;
332 	unsigned int number_of_local_addresses;
333 	unsigned int number_of_associations;
334 	unsigned int number_of_remote_addresses;
335 	unsigned int n;
336 	int error;
337 	struct sctp_inpcb *inp;
338 	struct sctp_tcb *stcb;
339 	struct sctp_nets *net;
340 	struct xsctp_inpcb xinpcb;
341 	struct xsctp_tcb xstcb;
342 	struct xsctp_raddr xraddr;
343 	struct socket *so;
344 
345 	number_of_endpoints = 0;
346 	number_of_local_addresses = 0;
347 	number_of_associations = 0;
348 	number_of_remote_addresses = 0;
349 
350 	SCTP_INP_INFO_RLOCK();
351 	if (req->oldptr == USER_ADDR_NULL) {
352 		LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
353 			SCTP_INP_RLOCK(inp);
354 			number_of_endpoints++;
355 			number_of_local_addresses += number_of_addresses(inp);
356 			LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
357 				number_of_associations++;
358 				number_of_local_addresses += number_of_addresses(inp);
359 				TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
360 					number_of_remote_addresses++;
361 				}
362 			}
363 			SCTP_INP_RUNLOCK(inp);
364 		}
365 		SCTP_INP_INFO_RUNLOCK();
366 		n = (number_of_endpoints + 1) * sizeof(struct xsctp_inpcb) +
367 		    (number_of_local_addresses + number_of_endpoints + number_of_associations) * sizeof(struct xsctp_laddr) +
368 		    (number_of_associations + number_of_endpoints) * sizeof(struct xsctp_tcb) +
369 		    (number_of_remote_addresses + number_of_associations) * sizeof(struct xsctp_raddr);
370 
371 		/* request some more memory than needed */
372 		req->oldidx = (n + n / 8);
373 		return 0;
374 	}
375 	if (req->newptr != USER_ADDR_NULL) {
376 		SCTP_INP_INFO_RUNLOCK();
377 		SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_SYSCTL, EPERM);
378 		return EPERM;
379 	}
380 	LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
381 		SCTP_INP_RLOCK(inp);
382 		if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
383 			/* if its allgone it is being freed - skip it  */
384 			goto skip;
385 		}
386 		xinpcb.last = 0;
387 		xinpcb.local_port = ntohs(inp->sctp_lport);
388 		xinpcb.flags = inp->sctp_flags;
389 		xinpcb.features = inp->sctp_features;
390 		xinpcb.total_sends = inp->total_sends;
391 		xinpcb.total_recvs = inp->total_recvs;
392 		xinpcb.total_nospaces = inp->total_nospaces;
393 		xinpcb.fragmentation_point = inp->sctp_frag_point;
394 		so = inp->sctp_socket;
395 		if ((so == NULL) ||
396 		    (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
397 			xinpcb.qlen = 0;
398 			xinpcb.maxqlen = 0;
399 		} else {
400 			xinpcb.qlen = so->so_qlen;
401 			xinpcb.maxqlen = so->so_qlimit;
402 		}
403 		SCTP_INP_INCR_REF(inp);
404 		SCTP_INP_RUNLOCK(inp);
405 		SCTP_INP_INFO_RUNLOCK();
406 		error = SYSCTL_OUT(req, &xinpcb, sizeof(struct xsctp_inpcb));
407 		if (error) {
408 			SCTP_INP_DECR_REF(inp);
409 			return error;
410 		}
411 		SCTP_INP_INFO_RLOCK();
412 		SCTP_INP_RLOCK(inp);
413 		error = copy_out_local_addresses(inp, NULL, req);
414 		if (error) {
415 			SCTP_INP_DECR_REF(inp);
416 			return error;
417 		}
418 		LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
419 			SCTP_TCB_LOCK(stcb);
420 			atomic_add_int(&stcb->asoc.refcnt, 1);
421 			SCTP_TCB_UNLOCK(stcb);
422 			xstcb.last = 0;
423 			xstcb.local_port = ntohs(inp->sctp_lport);
424 			xstcb.remote_port = ntohs(stcb->rport);
425 			if (stcb->asoc.primary_destination != NULL)
426 				xstcb.primary_addr = stcb->asoc.primary_destination->ro._l_addr;
427 			xstcb.heartbeat_interval = stcb->asoc.heart_beat_delay;
428 			xstcb.state = SCTP_GET_STATE(&stcb->asoc);	/* FIXME */
429 			/* 7.0 does not support these */
430 			xstcb.assoc_id = sctp_get_associd(stcb);
431 			xstcb.peers_rwnd = stcb->asoc.peers_rwnd;
432 			xstcb.in_streams = stcb->asoc.streamincnt;
433 			xstcb.out_streams = stcb->asoc.streamoutcnt;
434 			xstcb.max_nr_retrans = stcb->asoc.overall_error_count;
435 			xstcb.primary_process = 0;	/* not really supported
436 							 * yet */
437 			xstcb.T1_expireries = stcb->asoc.timoinit + stcb->asoc.timocookie;
438 			xstcb.T2_expireries = stcb->asoc.timoshutdown + stcb->asoc.timoshutdownack;
439 			xstcb.retransmitted_tsns = stcb->asoc.marked_retrans;
440 			xstcb.start_time.tv_sec = (uint32_t) stcb->asoc.start_time.tv_sec;
441 			xstcb.start_time.tv_usec = (uint32_t) stcb->asoc.start_time.tv_usec;
442 			xstcb.discontinuity_time.tv_sec = (uint32_t) stcb->asoc.discontinuity_time.tv_sec;
443 			xstcb.discontinuity_time.tv_usec = (uint32_t) stcb->asoc.discontinuity_time.tv_usec;
444 			xstcb.total_sends = stcb->total_sends;
445 			xstcb.total_recvs = stcb->total_recvs;
446 			xstcb.local_tag = stcb->asoc.my_vtag;
447 			xstcb.remote_tag = stcb->asoc.peer_vtag;
448 			xstcb.initial_tsn = stcb->asoc.init_seq_number;
449 			xstcb.highest_tsn = stcb->asoc.sending_seq - 1;
450 			xstcb.cumulative_tsn = stcb->asoc.last_acked_seq;
451 			xstcb.cumulative_tsn_ack = stcb->asoc.cumulative_tsn;
452 			xstcb.mtu = stcb->asoc.smallest_mtu;
453 			xstcb.refcnt = stcb->asoc.refcnt;
454 			SCTP_INP_RUNLOCK(inp);
455 			SCTP_INP_INFO_RUNLOCK();
456 			error = SYSCTL_OUT(req, &xstcb, sizeof(struct xsctp_tcb));
457 			if (error) {
458 				SCTP_INP_DECR_REF(inp);
459 				atomic_subtract_int(&stcb->asoc.refcnt, 1);
460 				return error;
461 			}
462 			SCTP_INP_INFO_RLOCK();
463 			SCTP_INP_RLOCK(inp);
464 			error = copy_out_local_addresses(inp, stcb, req);
465 			if (error) {
466 				SCTP_INP_DECR_REF(inp);
467 				atomic_subtract_int(&stcb->asoc.refcnt, 1);
468 				return error;
469 			}
470 			TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
471 				xraddr.last = 0;
472 				xraddr.address = net->ro._l_addr;
473 				xraddr.active = ((net->dest_state & SCTP_ADDR_REACHABLE) == SCTP_ADDR_REACHABLE);
474 				xraddr.confirmed = ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0);
475 				xraddr.heartbeat_enabled = ((net->dest_state & SCTP_ADDR_NOHB) == 0);
476 				xraddr.rto = net->RTO;
477 				xraddr.max_path_rtx = net->failure_threshold;
478 				xraddr.rtx = net->marked_retrans;
479 				xraddr.error_counter = net->error_count;
480 				xraddr.cwnd = net->cwnd;
481 				xraddr.flight_size = net->flight_size;
482 				xraddr.mtu = net->mtu;
483 				xraddr.rtt = net->rtt / 1000;
484 				xraddr.start_time.tv_sec = (uint32_t) net->start_time.tv_sec;
485 				xraddr.start_time.tv_usec = (uint32_t) net->start_time.tv_usec;
486 				SCTP_INP_RUNLOCK(inp);
487 				SCTP_INP_INFO_RUNLOCK();
488 				error = SYSCTL_OUT(req, &xraddr, sizeof(struct xsctp_raddr));
489 				if (error) {
490 					SCTP_INP_DECR_REF(inp);
491 					atomic_subtract_int(&stcb->asoc.refcnt, 1);
492 					return error;
493 				}
494 				SCTP_INP_INFO_RLOCK();
495 				SCTP_INP_RLOCK(inp);
496 			}
497 			atomic_subtract_int(&stcb->asoc.refcnt, 1);
498 			memset((void *)&xraddr, 0, sizeof(struct xsctp_raddr));
499 			xraddr.last = 1;
500 			SCTP_INP_RUNLOCK(inp);
501 			SCTP_INP_INFO_RUNLOCK();
502 			error = SYSCTL_OUT(req, &xraddr, sizeof(struct xsctp_raddr));
503 			if (error) {
504 				SCTP_INP_DECR_REF(inp);
505 				return error;
506 			}
507 			SCTP_INP_INFO_RLOCK();
508 			SCTP_INP_RLOCK(inp);
509 		}
510 		SCTP_INP_DECR_REF(inp);
511 		SCTP_INP_RUNLOCK(inp);
512 		SCTP_INP_INFO_RUNLOCK();
513 		memset((void *)&xstcb, 0, sizeof(struct xsctp_tcb));
514 		xstcb.last = 1;
515 		error = SYSCTL_OUT(req, &xstcb, sizeof(struct xsctp_tcb));
516 		if (error) {
517 			return error;
518 		}
519 skip:
520 		SCTP_INP_INFO_RLOCK();
521 	}
522 	SCTP_INP_INFO_RUNLOCK();
523 
524 	memset((void *)&xinpcb, 0, sizeof(struct xsctp_inpcb));
525 	xinpcb.last = 1;
526 	error = SYSCTL_OUT(req, &xinpcb, sizeof(struct xsctp_inpcb));
527 	return error;
528 }
529 
530 
531 #define RANGECHK(var, min, max) \
532 	if ((var) < (min)) { (var) = (min); } \
533 	else if ((var) > (max)) { (var) = (max); }
534 
535 static int
536 sysctl_sctp_udp_tunneling_check(SYSCTL_HANDLER_ARGS)
537 {
538 	int error;
539 	uint32_t old_sctp_udp_tunneling_port;
540 
541 	SCTP_INP_INFO_RLOCK();
542 	old_sctp_udp_tunneling_port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
543 	SCTP_INP_INFO_RUNLOCK();
544 	error = sysctl_handle_int(oidp, oidp->oid_arg1, oidp->oid_arg2, req);
545 	if (error == 0) {
546 		RANGECHK(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port), SCTPCTL_UDP_TUNNELING_PORT_MIN, SCTPCTL_UDP_TUNNELING_PORT_MAX);
547 		if (old_sctp_udp_tunneling_port == SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)) {
548 			error = 0;
549 			goto out;
550 		}
551 		SCTP_INP_INFO_WLOCK();
552 		if (old_sctp_udp_tunneling_port) {
553 			sctp_over_udp_stop();
554 		}
555 		if (SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)) {
556 			if (sctp_over_udp_start()) {
557 				SCTP_BASE_SYSCTL(sctp_udp_tunneling_port) = 0;
558 			}
559 		}
560 		SCTP_INP_INFO_WUNLOCK();
561 	}
562 out:
563 	return (error);
564 }
565 
566 
567 static int
568 sysctl_sctp_check(SYSCTL_HANDLER_ARGS)
569 {
570 	int error;
571 
572 #ifdef VIMAGE
573 	error = vnet_sysctl_handle_int(oidp, oidp->oid_arg1, oidp->oid_arg2, req);
574 #else
575 	error = sysctl_handle_int(oidp, oidp->oid_arg1, oidp->oid_arg2, req);
576 #endif
577 	if (error == 0) {
578 		RANGECHK(SCTP_BASE_SYSCTL(sctp_sendspace), SCTPCTL_MAXDGRAM_MIN, SCTPCTL_MAXDGRAM_MAX);
579 		RANGECHK(SCTP_BASE_SYSCTL(sctp_recvspace), SCTPCTL_RECVSPACE_MIN, SCTPCTL_RECVSPACE_MAX);
580 		RANGECHK(SCTP_BASE_SYSCTL(sctp_auto_asconf), SCTPCTL_AUTOASCONF_MIN, SCTPCTL_AUTOASCONF_MAX);
581 		RANGECHK(SCTP_BASE_SYSCTL(sctp_ecn_enable), SCTPCTL_ECN_ENABLE_MIN, SCTPCTL_ECN_ENABLE_MAX);
582 		RANGECHK(SCTP_BASE_SYSCTL(sctp_strict_sacks), SCTPCTL_STRICT_SACKS_MIN, SCTPCTL_STRICT_SACKS_MAX);
583 #if !defined(SCTP_WITH_NO_CSUM)
584 		RANGECHK(SCTP_BASE_SYSCTL(sctp_no_csum_on_loopback), SCTPCTL_LOOPBACK_NOCSUM_MIN, SCTPCTL_LOOPBACK_NOCSUM_MAX);
585 #endif
586 		RANGECHK(SCTP_BASE_SYSCTL(sctp_strict_init), SCTPCTL_STRICT_INIT_MIN, SCTPCTL_STRICT_INIT_MAX);
587 		RANGECHK(SCTP_BASE_SYSCTL(sctp_peer_chunk_oh), SCTPCTL_PEER_CHKOH_MIN, SCTPCTL_PEER_CHKOH_MAX);
588 		RANGECHK(SCTP_BASE_SYSCTL(sctp_max_burst_default), SCTPCTL_MAXBURST_MIN, SCTPCTL_MAXBURST_MAX);
589 		RANGECHK(SCTP_BASE_SYSCTL(sctp_fr_max_burst_default), SCTPCTL_FRMAXBURST_MIN, SCTPCTL_FRMAXBURST_MAX);
590 		RANGECHK(SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue), SCTPCTL_MAXCHUNKS_MIN, SCTPCTL_MAXCHUNKS_MAX);
591 		RANGECHK(SCTP_BASE_SYSCTL(sctp_hashtblsize), SCTPCTL_TCBHASHSIZE_MIN, SCTPCTL_TCBHASHSIZE_MAX);
592 		RANGECHK(SCTP_BASE_SYSCTL(sctp_pcbtblsize), SCTPCTL_PCBHASHSIZE_MIN, SCTPCTL_PCBHASHSIZE_MAX);
593 		RANGECHK(SCTP_BASE_SYSCTL(sctp_min_split_point), SCTPCTL_MIN_SPLIT_POINT_MIN, SCTPCTL_MIN_SPLIT_POINT_MAX);
594 		RANGECHK(SCTP_BASE_SYSCTL(sctp_chunkscale), SCTPCTL_CHUNKSCALE_MIN, SCTPCTL_CHUNKSCALE_MAX);
595 		RANGECHK(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default), SCTPCTL_DELAYED_SACK_TIME_MIN, SCTPCTL_DELAYED_SACK_TIME_MAX);
596 		RANGECHK(SCTP_BASE_SYSCTL(sctp_sack_freq_default), SCTPCTL_SACK_FREQ_MIN, SCTPCTL_SACK_FREQ_MAX);
597 		RANGECHK(SCTP_BASE_SYSCTL(sctp_system_free_resc_limit), SCTPCTL_SYS_RESOURCE_MIN, SCTPCTL_SYS_RESOURCE_MAX);
598 		RANGECHK(SCTP_BASE_SYSCTL(sctp_asoc_free_resc_limit), SCTPCTL_ASOC_RESOURCE_MIN, SCTPCTL_ASOC_RESOURCE_MAX);
599 		RANGECHK(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default), SCTPCTL_HEARTBEAT_INTERVAL_MIN, SCTPCTL_HEARTBEAT_INTERVAL_MAX);
600 		RANGECHK(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default), SCTPCTL_PMTU_RAISE_TIME_MIN, SCTPCTL_PMTU_RAISE_TIME_MAX);
601 		RANGECHK(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default), SCTPCTL_SHUTDOWN_GUARD_TIME_MIN, SCTPCTL_SHUTDOWN_GUARD_TIME_MAX);
602 		RANGECHK(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default), SCTPCTL_SECRET_LIFETIME_MIN, SCTPCTL_SECRET_LIFETIME_MAX);
603 		RANGECHK(SCTP_BASE_SYSCTL(sctp_rto_max_default), SCTPCTL_RTO_MAX_MIN, SCTPCTL_RTO_MAX_MAX);
604 		RANGECHK(SCTP_BASE_SYSCTL(sctp_rto_min_default), SCTPCTL_RTO_MIN_MIN, SCTPCTL_RTO_MIN_MAX);
605 		RANGECHK(SCTP_BASE_SYSCTL(sctp_rto_initial_default), SCTPCTL_RTO_INITIAL_MIN, SCTPCTL_RTO_INITIAL_MAX);
606 		RANGECHK(SCTP_BASE_SYSCTL(sctp_init_rto_max_default), SCTPCTL_INIT_RTO_MAX_MIN, SCTPCTL_INIT_RTO_MAX_MAX);
607 		RANGECHK(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default), SCTPCTL_VALID_COOKIE_LIFE_MIN, SCTPCTL_VALID_COOKIE_LIFE_MAX);
608 		RANGECHK(SCTP_BASE_SYSCTL(sctp_init_rtx_max_default), SCTPCTL_INIT_RTX_MAX_MIN, SCTPCTL_INIT_RTX_MAX_MAX);
609 		RANGECHK(SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default), SCTPCTL_ASSOC_RTX_MAX_MIN, SCTPCTL_ASSOC_RTX_MAX_MAX);
610 		RANGECHK(SCTP_BASE_SYSCTL(sctp_path_rtx_max_default), SCTPCTL_PATH_RTX_MAX_MIN, SCTPCTL_PATH_RTX_MAX_MAX);
611 		RANGECHK(SCTP_BASE_SYSCTL(sctp_add_more_threshold), SCTPCTL_ADD_MORE_ON_OUTPUT_MIN, SCTPCTL_ADD_MORE_ON_OUTPUT_MAX);
612 		RANGECHK(SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default), SCTPCTL_OUTGOING_STREAMS_MIN, SCTPCTL_OUTGOING_STREAMS_MAX);
613 		RANGECHK(SCTP_BASE_SYSCTL(sctp_cmt_on_off), SCTPCTL_CMT_ON_OFF_MIN, SCTPCTL_CMT_ON_OFF_MAX);
614 		/* EY */
615 		RANGECHK(SCTP_BASE_SYSCTL(sctp_nr_sack_on_off), SCTPCTL_NR_SACK_ON_OFF_MIN, SCTPCTL_NR_SACK_ON_OFF_MAX);
616 		RANGECHK(SCTP_BASE_SYSCTL(sctp_cmt_use_dac), SCTPCTL_CMT_USE_DAC_MIN, SCTPCTL_CMT_USE_DAC_MAX);
617 		RANGECHK(SCTP_BASE_SYSCTL(sctp_cmt_pf), SCTPCTL_CMT_PF_MIN, SCTPCTL_CMT_PF_MAX);
618 		RANGECHK(SCTP_BASE_SYSCTL(sctp_use_cwnd_based_maxburst), SCTPCTL_CWND_MAXBURST_MIN, SCTPCTL_CWND_MAXBURST_MAX);
619 		RANGECHK(SCTP_BASE_SYSCTL(sctp_early_fr), SCTPCTL_EARLY_FAST_RETRAN_MIN, SCTPCTL_EARLY_FAST_RETRAN_MAX);
620 		RANGECHK(SCTP_BASE_SYSCTL(sctp_early_fr_msec), SCTPCTL_EARLY_FAST_RETRAN_MSEC_MIN, SCTPCTL_EARLY_FAST_RETRAN_MSEC_MAX);
621 		RANGECHK(SCTP_BASE_SYSCTL(sctp_asconf_auth_nochk), SCTPCTL_ASCONF_AUTH_NOCHK_MIN, SCTPCTL_ASCONF_AUTH_NOCHK_MAX);
622 		RANGECHK(SCTP_BASE_SYSCTL(sctp_auth_disable), SCTPCTL_AUTH_DISABLE_MIN, SCTPCTL_AUTH_DISABLE_MAX);
623 		RANGECHK(SCTP_BASE_SYSCTL(sctp_nat_friendly), SCTPCTL_NAT_FRIENDLY_MIN, SCTPCTL_NAT_FRIENDLY_MAX);
624 		RANGECHK(SCTP_BASE_SYSCTL(sctp_L2_abc_variable), SCTPCTL_ABC_L_VAR_MIN, SCTPCTL_ABC_L_VAR_MAX);
625 		RANGECHK(SCTP_BASE_SYSCTL(sctp_mbuf_threshold_count), SCTPCTL_MAX_CHAINED_MBUFS_MIN, SCTPCTL_MAX_CHAINED_MBUFS_MAX);
626 		RANGECHK(SCTP_BASE_SYSCTL(sctp_do_drain), SCTPCTL_DO_SCTP_DRAIN_MIN, SCTPCTL_DO_SCTP_DRAIN_MAX);
627 		RANGECHK(SCTP_BASE_SYSCTL(sctp_hb_maxburst), SCTPCTL_HB_MAX_BURST_MIN, SCTPCTL_HB_MAX_BURST_MAX);
628 		RANGECHK(SCTP_BASE_SYSCTL(sctp_abort_if_one_2_one_hits_limit), SCTPCTL_ABORT_AT_LIMIT_MIN, SCTPCTL_ABORT_AT_LIMIT_MAX);
629 		RANGECHK(SCTP_BASE_SYSCTL(sctp_strict_data_order), SCTPCTL_STRICT_DATA_ORDER_MIN, SCTPCTL_STRICT_DATA_ORDER_MAX);
630 		RANGECHK(SCTP_BASE_SYSCTL(sctp_min_residual), SCTPCTL_MIN_RESIDUAL_MIN, SCTPCTL_MIN_RESIDUAL_MAX);
631 		RANGECHK(SCTP_BASE_SYSCTL(sctp_max_retran_chunk), SCTPCTL_MAX_RETRAN_CHUNK_MIN, SCTPCTL_MAX_RETRAN_CHUNK_MAX);
632 		RANGECHK(SCTP_BASE_SYSCTL(sctp_logging_level), SCTPCTL_LOGGING_LEVEL_MIN, SCTPCTL_LOGGING_LEVEL_MAX);
633 		RANGECHK(SCTP_BASE_SYSCTL(sctp_default_cc_module), SCTPCTL_DEFAULT_CC_MODULE_MIN, SCTPCTL_DEFAULT_CC_MODULE_MAX);
634 		RANGECHK(SCTP_BASE_SYSCTL(sctp_default_ss_module), SCTPCTL_DEFAULT_SS_MODULE_MIN, SCTPCTL_DEFAULT_SS_MODULE_MAX);
635 		RANGECHK(SCTP_BASE_SYSCTL(sctp_default_frag_interleave), SCTPCTL_DEFAULT_FRAG_INTERLEAVE_MIN, SCTPCTL_DEFAULT_FRAG_INTERLEAVE_MAX);
636 		RANGECHK(SCTP_BASE_SYSCTL(sctp_vtag_time_wait), SCTPCTL_TIME_WAIT_MIN, SCTPCTL_TIME_WAIT_MAX);
637 		RANGECHK(SCTP_BASE_SYSCTL(sctp_buffer_splitting), SCTPCTL_BUFFER_SPLITTING_MIN, SCTPCTL_BUFFER_SPLITTING_MAX);
638 		RANGECHK(SCTP_BASE_SYSCTL(sctp_initial_cwnd), SCTPCTL_INITIAL_CWND_MIN, SCTPCTL_INITIAL_CWND_MAX);
639 		RANGECHK(SCTP_BASE_SYSCTL(sctp_rttvar_bw), SCTPCTL_RTTVAR_BW_MIN, SCTPCTL_RTTVAR_BW_MAX);
640 		RANGECHK(SCTP_BASE_SYSCTL(sctp_rttvar_rtt), SCTPCTL_RTTVAR_RTT_MIN, SCTPCTL_RTTVAR_RTT_MAX);
641 		RANGECHK(SCTP_BASE_SYSCTL(sctp_rttvar_eqret), SCTPCTL_RTTVAR_EQRET_MIN, SCTPCTL_RTTVAR_EQRET_MAX);
642 		RANGECHK(SCTP_BASE_SYSCTL(sctp_mobility_base), SCTPCTL_MOBILITY_BASE_MIN, SCTPCTL_MOBILITY_BASE_MAX);
643 		RANGECHK(SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff), SCTPCTL_MOBILITY_FASTHANDOFF_MIN, SCTPCTL_MOBILITY_FASTHANDOFF_MAX);
644 		RANGECHK(SCTP_BASE_SYSCTL(sctp_udp_tunneling_for_client_enable), SCTPCTL_UDP_TUNNELING_FOR_CLIENT_ENABLE_MIN, SCTPCTL_UDP_TUNNELING_FOR_CLIENT_ENABLE_MAX);
645 		RANGECHK(SCTP_BASE_SYSCTL(sctp_enable_sack_immediately), SCTPCTL_SACK_IMMEDIATELY_ENABLE_MIN, SCTPCTL_SACK_IMMEDIATELY_ENABLE_MAX);
646 		RANGECHK(SCTP_BASE_SYSCTL(sctp_inits_include_nat_friendly), SCTPCTL_NAT_FRIENDLY_INITS_MIN, SCTPCTL_NAT_FRIENDLY_INITS_MAX);
647 
648 #ifdef SCTP_DEBUG
649 		RANGECHK(SCTP_BASE_SYSCTL(sctp_debug_on), SCTPCTL_DEBUG_MIN, SCTPCTL_DEBUG_MAX);
650 #endif
651 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
652 		RANGECHK(SCTP_BASE_SYSCTL(sctp_output_unlocked), SCTPCTL_OUTPUT_UNLOCKED_MIN, SCTPCTL_OUTPUT_UNLOCKED_MAX);
653 #endif
654 	}
655 	return (error);
656 }
657 
658 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
659 static int
660 sysctl_stat_get(SYSCTL_HANDLER_ARGS)
661 {
662 	int cpu, error;
663 	struct sctpstat sb, *sarry, *cpin = NULL;
664 
665 	if ((req->newptr) && (req->newlen == sizeof(struct sctpstat))) {
666 		/*
667 		 * User wants us to clear or at least reset the counters to
668 		 * the specified values.
669 		 */
670 		cpin = (struct sctpstat *)req->newptr;
671 	} else if (req->newptr) {
672 		/* Must be a stat structure */
673 		return (EINVAL);
674 	}
675 	memset(&sb, 0, sizeof(sb));
676 	for (cpu = 0; cpu < mp_maxid; cpu++) {
677 		sarry = &SCTP_BASE_STATS[cpu];
678 		if (sarry->sctps_discontinuitytime.tv_sec > sb.sctps_discontinuitytime.tv_sec) {
679 			sb.sctps_discontinuitytime.tv_sec = sarry->sctps_discontinuitytime.tv_sec;
680 			sb.sctps_discontinuitytime.tv_usec = sarry->sctps_discontinuitytime.tv_usec;
681 		}
682 		sb.sctps_currestab += sarry->sctps_currestab;
683 		sb.sctps_activeestab += sarry->sctps_activeestab;
684 		sb.sctps_restartestab += sarry->sctps_restartestab;
685 		sb.sctps_collisionestab += sarry->sctps_collisionestab;
686 		sb.sctps_passiveestab += sarry->sctps_passiveestab;
687 		sb.sctps_aborted += sarry->sctps_aborted;
688 		sb.sctps_shutdown += sarry->sctps_shutdown;
689 		sb.sctps_outoftheblue += sarry->sctps_outoftheblue;
690 		sb.sctps_checksumerrors += sarry->sctps_checksumerrors;
691 		sb.sctps_outcontrolchunks += sarry->sctps_outcontrolchunks;
692 		sb.sctps_outorderchunks += sarry->sctps_outorderchunks;
693 		sb.sctps_outunorderchunks += sarry->sctps_outunorderchunks;
694 		sb.sctps_incontrolchunks += sarry->sctps_incontrolchunks;
695 		sb.sctps_inorderchunks += sarry->sctps_inorderchunks;
696 		sb.sctps_inunorderchunks += sarry->sctps_inunorderchunks;
697 		sb.sctps_fragusrmsgs += sarry->sctps_fragusrmsgs;
698 		sb.sctps_reasmusrmsgs += sarry->sctps_reasmusrmsgs;
699 		sb.sctps_outpackets += sarry->sctps_outpackets;
700 		sb.sctps_inpackets += sarry->sctps_inpackets;
701 		sb.sctps_recvpackets += sarry->sctps_recvpackets;
702 		sb.sctps_recvdatagrams += sarry->sctps_recvdatagrams;
703 		sb.sctps_recvpktwithdata += sarry->sctps_recvpktwithdata;
704 		sb.sctps_recvsacks += sarry->sctps_recvsacks;
705 		sb.sctps_recvdata += sarry->sctps_recvdata;
706 		sb.sctps_recvdupdata += sarry->sctps_recvdupdata;
707 		sb.sctps_recvheartbeat += sarry->sctps_recvheartbeat;
708 		sb.sctps_recvheartbeatack += sarry->sctps_recvheartbeatack;
709 		sb.sctps_recvecne += sarry->sctps_recvecne;
710 		sb.sctps_recvauth += sarry->sctps_recvauth;
711 		sb.sctps_recvauthmissing += sarry->sctps_recvauthmissing;
712 		sb.sctps_recvivalhmacid += sarry->sctps_recvivalhmacid;
713 		sb.sctps_recvivalkeyid += sarry->sctps_recvivalkeyid;
714 		sb.sctps_recvauthfailed += sarry->sctps_recvauthfailed;
715 		sb.sctps_recvexpress += sarry->sctps_recvexpress;
716 		sb.sctps_recvexpressm += sarry->sctps_recvexpressm;
717 		sb.sctps_recvnocrc += sarry->sctps_recvnocrc;
718 		sb.sctps_recvswcrc += sarry->sctps_recvswcrc;
719 		sb.sctps_recvhwcrc += sarry->sctps_recvhwcrc;
720 		sb.sctps_sendpackets += sarry->sctps_sendpackets;
721 		sb.sctps_sendsacks += sarry->sctps_sendsacks;
722 		sb.sctps_senddata += sarry->sctps_senddata;
723 		sb.sctps_sendretransdata += sarry->sctps_sendretransdata;
724 		sb.sctps_sendfastretrans += sarry->sctps_sendfastretrans;
725 		sb.sctps_sendmultfastretrans += sarry->sctps_sendmultfastretrans;
726 		sb.sctps_sendheartbeat += sarry->sctps_sendheartbeat;
727 		sb.sctps_sendecne += sarry->sctps_sendecne;
728 		sb.sctps_sendauth += sarry->sctps_sendauth;
729 		sb.sctps_senderrors += sarry->sctps_senderrors;
730 		sb.sctps_sendnocrc += sarry->sctps_sendnocrc;
731 		sb.sctps_sendswcrc += sarry->sctps_sendswcrc;
732 		sb.sctps_sendhwcrc += sarry->sctps_sendhwcrc;
733 		sb.sctps_pdrpfmbox += sarry->sctps_pdrpfmbox;
734 		sb.sctps_pdrpfehos += sarry->sctps_pdrpfehos;
735 		sb.sctps_pdrpmbda += sarry->sctps_pdrpmbda;
736 		sb.sctps_pdrpmbct += sarry->sctps_pdrpmbct;
737 		sb.sctps_pdrpbwrpt += sarry->sctps_pdrpbwrpt;
738 		sb.sctps_pdrpcrupt += sarry->sctps_pdrpcrupt;
739 		sb.sctps_pdrpnedat += sarry->sctps_pdrpnedat;
740 		sb.sctps_pdrppdbrk += sarry->sctps_pdrppdbrk;
741 		sb.sctps_pdrptsnnf += sarry->sctps_pdrptsnnf;
742 		sb.sctps_pdrpdnfnd += sarry->sctps_pdrpdnfnd;
743 		sb.sctps_pdrpdiwnp += sarry->sctps_pdrpdiwnp;
744 		sb.sctps_pdrpdizrw += sarry->sctps_pdrpdizrw;
745 		sb.sctps_pdrpbadd += sarry->sctps_pdrpbadd;
746 		sb.sctps_pdrpmark += sarry->sctps_pdrpmark;
747 		sb.sctps_timoiterator += sarry->sctps_timoiterator;
748 		sb.sctps_timodata += sarry->sctps_timodata;
749 		sb.sctps_timowindowprobe += sarry->sctps_timowindowprobe;
750 		sb.sctps_timoinit += sarry->sctps_timoinit;
751 		sb.sctps_timosack += sarry->sctps_timosack;
752 		sb.sctps_timoshutdown += sarry->sctps_timoshutdown;
753 		sb.sctps_timoheartbeat += sarry->sctps_timoheartbeat;
754 		sb.sctps_timocookie += sarry->sctps_timocookie;
755 		sb.sctps_timosecret += sarry->sctps_timosecret;
756 		sb.sctps_timopathmtu += sarry->sctps_timopathmtu;
757 		sb.sctps_timoshutdownack += sarry->sctps_timoshutdownack;
758 		sb.sctps_timoshutdownguard += sarry->sctps_timoshutdownguard;
759 		sb.sctps_timostrmrst += sarry->sctps_timostrmrst;
760 		sb.sctps_timoearlyfr += sarry->sctps_timoearlyfr;
761 		sb.sctps_timoasconf += sarry->sctps_timoasconf;
762 		sb.sctps_timodelprim += sarry->sctps_timodelprim;
763 		sb.sctps_timoautoclose += sarry->sctps_timoautoclose;
764 		sb.sctps_timoassockill += sarry->sctps_timoassockill;
765 		sb.sctps_timoinpkill += sarry->sctps_timoinpkill;
766 		sb.sctps_earlyfrstart += sarry->sctps_earlyfrstart;
767 		sb.sctps_earlyfrstop += sarry->sctps_earlyfrstop;
768 		sb.sctps_earlyfrmrkretrans += sarry->sctps_earlyfrmrkretrans;
769 		sb.sctps_earlyfrstpout += sarry->sctps_earlyfrstpout;
770 		sb.sctps_earlyfrstpidsck1 += sarry->sctps_earlyfrstpidsck1;
771 		sb.sctps_earlyfrstpidsck2 += sarry->sctps_earlyfrstpidsck2;
772 		sb.sctps_earlyfrstpidsck3 += sarry->sctps_earlyfrstpidsck3;
773 		sb.sctps_earlyfrstpidsck4 += sarry->sctps_earlyfrstpidsck4;
774 		sb.sctps_earlyfrstrid += sarry->sctps_earlyfrstrid;
775 		sb.sctps_earlyfrstrout += sarry->sctps_earlyfrstrout;
776 		sb.sctps_earlyfrstrtmr += sarry->sctps_earlyfrstrtmr;
777 		sb.sctps_hdrops += sarry->sctps_hdrops;
778 		sb.sctps_badsum += sarry->sctps_badsum;
779 		sb.sctps_noport += sarry->sctps_noport;
780 		sb.sctps_badvtag += sarry->sctps_badvtag;
781 		sb.sctps_badsid += sarry->sctps_badsid;
782 		sb.sctps_nomem += sarry->sctps_nomem;
783 		sb.sctps_fastretransinrtt += sarry->sctps_fastretransinrtt;
784 		sb.sctps_markedretrans += sarry->sctps_markedretrans;
785 		sb.sctps_naglesent += sarry->sctps_naglesent;
786 		sb.sctps_naglequeued += sarry->sctps_naglequeued;
787 		sb.sctps_maxburstqueued += sarry->sctps_maxburstqueued;
788 		sb.sctps_ifnomemqueued += sarry->sctps_ifnomemqueued;
789 		sb.sctps_windowprobed += sarry->sctps_windowprobed;
790 		sb.sctps_lowlevelerr += sarry->sctps_lowlevelerr;
791 		sb.sctps_lowlevelerrusr += sarry->sctps_lowlevelerrusr;
792 		sb.sctps_datadropchklmt += sarry->sctps_datadropchklmt;
793 		sb.sctps_datadroprwnd += sarry->sctps_datadroprwnd;
794 		sb.sctps_ecnereducedcwnd += sarry->sctps_ecnereducedcwnd;
795 		sb.sctps_vtagexpress += sarry->sctps_vtagexpress;
796 		sb.sctps_vtagbogus += sarry->sctps_vtagbogus;
797 		sb.sctps_primary_randry += sarry->sctps_primary_randry;
798 		sb.sctps_cmt_randry += sarry->sctps_cmt_randry;
799 		sb.sctps_slowpath_sack += sarry->sctps_slowpath_sack;
800 		sb.sctps_wu_sacks_sent += sarry->sctps_wu_sacks_sent;
801 		sb.sctps_sends_with_flags += sarry->sctps_sends_with_flags;
802 		sb.sctps_sends_with_unord += sarry->sctps_sends_with_unord;
803 		sb.sctps_sends_with_eof += sarry->sctps_sends_with_eof;
804 		sb.sctps_sends_with_abort += sarry->sctps_sends_with_abort;
805 		sb.sctps_protocol_drain_calls += sarry->sctps_protocol_drain_calls;
806 		sb.sctps_protocol_drains_done += sarry->sctps_protocol_drains_done;
807 		sb.sctps_read_peeks += sarry->sctps_read_peeks;
808 		sb.sctps_cached_chk += sarry->sctps_cached_chk;
809 		sb.sctps_cached_strmoq += sarry->sctps_cached_strmoq;
810 		sb.sctps_left_abandon += sarry->sctps_left_abandon;
811 		sb.sctps_send_burst_avoid += sarry->sctps_send_burst_avoid;
812 		sb.sctps_send_cwnd_avoid += sarry->sctps_send_cwnd_avoid;
813 		sb.sctps_fwdtsn_map_over += sarry->sctps_fwdtsn_map_over;
814 		if (cpin) {
815 			memcpy(sarry, cpin, sizeof(struct sctpstat));
816 		}
817 	}
818 	error = SYSCTL_OUT(req, &sb, sizeof(sb));
819 	return (error);
820 }
821 
822 #endif
823 
824 #if defined(SCTP_LOCAL_TRACE_BUF)
825 static int
826 sysctl_sctp_cleartrace(SYSCTL_HANDLER_ARGS)
827 {
828 	int error = 0;
829 
830 	memset(&SCTP_BASE_SYSCTL(sctp_log), 0, sizeof(struct sctp_log));
831 	return (error);
832 }
833 
834 #endif
835 
836 
837 /*
838  * sysctl definitions
839  */
840 
841 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, sendspace, CTLTYPE_UINT | CTLFLAG_RW,
842     &SCTP_BASE_SYSCTL(sctp_sendspace), 0, sysctl_sctp_check, "IU",
843     SCTPCTL_MAXDGRAM_DESC);
844 
845 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, recvspace, CTLTYPE_UINT | CTLFLAG_RW,
846     &SCTP_BASE_SYSCTL(sctp_recvspace), 0, sysctl_sctp_check, "IU",
847     SCTPCTL_RECVSPACE_DESC);
848 
849 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, auto_asconf, CTLTYPE_UINT | CTLFLAG_RW,
850     &SCTP_BASE_SYSCTL(sctp_auto_asconf), 0, sysctl_sctp_check, "IU",
851     SCTPCTL_AUTOASCONF_DESC);
852 
853 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, ecn_enable, CTLTYPE_UINT | CTLFLAG_RW,
854     &SCTP_BASE_SYSCTL(sctp_ecn_enable), 0, sysctl_sctp_check, "IU",
855     SCTPCTL_ECN_ENABLE_DESC);
856 
857 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, strict_sacks, CTLTYPE_UINT | CTLFLAG_RW,
858     &SCTP_BASE_SYSCTL(sctp_strict_sacks), 0, sysctl_sctp_check, "IU",
859     SCTPCTL_STRICT_SACKS_DESC);
860 
861 #if !defined(SCTP_WITH_NO_CSUM)
862 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, loopback_nocsum, CTLTYPE_UINT | CTLFLAG_RW,
863     &SCTP_BASE_SYSCTL(sctp_no_csum_on_loopback), 0, sysctl_sctp_check, "IU",
864     SCTPCTL_LOOPBACK_NOCSUM_DESC);
865 #endif
866 
867 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, strict_init, CTLTYPE_UINT | CTLFLAG_RW,
868     &SCTP_BASE_SYSCTL(sctp_strict_init), 0, sysctl_sctp_check, "IU",
869     SCTPCTL_STRICT_INIT_DESC);
870 
871 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, peer_chkoh, CTLTYPE_UINT | CTLFLAG_RW,
872     &SCTP_BASE_SYSCTL(sctp_peer_chunk_oh), 0, sysctl_sctp_check, "IU",
873     SCTPCTL_PEER_CHKOH_DESC);
874 
875 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, maxburst, CTLTYPE_UINT | CTLFLAG_RW,
876     &SCTP_BASE_SYSCTL(sctp_max_burst_default), 0, sysctl_sctp_check, "IU",
877     SCTPCTL_MAXBURST_DESC);
878 
879 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, fr_maxburst, CTLTYPE_UINT | CTLFLAG_RW,
880     &SCTP_BASE_SYSCTL(sctp_fr_max_burst_default), 0, sysctl_sctp_check, "IU",
881     SCTPCTL_FRMAXBURST_DESC);
882 
883 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, maxchunks, CTLTYPE_UINT | CTLFLAG_RW,
884     &SCTP_BASE_SYSCTL(sctp_max_chunks_on_queue), 0, sysctl_sctp_check, "IU",
885     SCTPCTL_MAXCHUNKS_DESC);
886 
887 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, tcbhashsize, CTLTYPE_UINT | CTLFLAG_RW,
888     &SCTP_BASE_SYSCTL(sctp_hashtblsize), 0, sysctl_sctp_check, "IU",
889     SCTPCTL_TCBHASHSIZE_DESC);
890 
891 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, pcbhashsize, CTLTYPE_UINT | CTLFLAG_RW,
892     &SCTP_BASE_SYSCTL(sctp_pcbtblsize), 0, sysctl_sctp_check, "IU",
893     SCTPCTL_PCBHASHSIZE_DESC);
894 
895 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, min_split_point, CTLTYPE_UINT | CTLFLAG_RW,
896     &SCTP_BASE_SYSCTL(sctp_min_split_point), 0, sysctl_sctp_check, "IU",
897     SCTPCTL_MIN_SPLIT_POINT_DESC);
898 
899 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, chunkscale, CTLTYPE_UINT | CTLFLAG_RW,
900     &SCTP_BASE_SYSCTL(sctp_chunkscale), 0, sysctl_sctp_check, "IU",
901     SCTPCTL_CHUNKSCALE_DESC);
902 
903 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, delayed_sack_time, CTLTYPE_UINT | CTLFLAG_RW,
904     &SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default), 0, sysctl_sctp_check, "IU",
905     SCTPCTL_DELAYED_SACK_TIME_DESC);
906 
907 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, sack_freq, CTLTYPE_UINT | CTLFLAG_RW,
908     &SCTP_BASE_SYSCTL(sctp_sack_freq_default), 0, sysctl_sctp_check, "IU",
909     SCTPCTL_SACK_FREQ_DESC);
910 
911 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, sys_resource, CTLTYPE_UINT | CTLFLAG_RW,
912     &SCTP_BASE_SYSCTL(sctp_system_free_resc_limit), 0, sysctl_sctp_check, "IU",
913     SCTPCTL_SYS_RESOURCE_DESC);
914 
915 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, asoc_resource, CTLTYPE_UINT | CTLFLAG_RW,
916     &SCTP_BASE_SYSCTL(sctp_asoc_free_resc_limit), 0, sysctl_sctp_check, "IU",
917     SCTPCTL_ASOC_RESOURCE_DESC);
918 
919 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, heartbeat_interval, CTLTYPE_UINT | CTLFLAG_RW,
920     &SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default), 0, sysctl_sctp_check, "IU",
921     SCTPCTL_HEARTBEAT_INTERVAL_DESC);
922 
923 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, pmtu_raise_time, CTLTYPE_UINT | CTLFLAG_RW,
924     &SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default), 0, sysctl_sctp_check, "IU",
925     SCTPCTL_PMTU_RAISE_TIME_DESC);
926 
927 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, shutdown_guard_time, CTLTYPE_UINT | CTLFLAG_RW,
928     &SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default), 0, sysctl_sctp_check, "IU",
929     SCTPCTL_SHUTDOWN_GUARD_TIME_DESC);
930 
931 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, secret_lifetime, CTLTYPE_UINT | CTLFLAG_RW,
932     &SCTP_BASE_SYSCTL(sctp_secret_lifetime_default), 0, sysctl_sctp_check, "IU",
933     SCTPCTL_SECRET_LIFETIME_DESC);
934 
935 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, rto_max, CTLTYPE_UINT | CTLFLAG_RW,
936     &SCTP_BASE_SYSCTL(sctp_rto_max_default), 0, sysctl_sctp_check, "IU",
937     SCTPCTL_RTO_MAX_DESC);
938 
939 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, rto_min, CTLTYPE_UINT | CTLFLAG_RW,
940     &SCTP_BASE_SYSCTL(sctp_rto_min_default), 0, sysctl_sctp_check, "IU",
941     SCTPCTL_RTO_MIN_DESC);
942 
943 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, rto_initial, CTLTYPE_UINT | CTLFLAG_RW,
944     &SCTP_BASE_SYSCTL(sctp_rto_initial_default), 0, sysctl_sctp_check, "IU",
945     SCTPCTL_RTO_INITIAL_DESC);
946 
947 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, init_rto_max, CTLTYPE_UINT | CTLFLAG_RW,
948     &SCTP_BASE_SYSCTL(sctp_init_rto_max_default), 0, sysctl_sctp_check, "IU",
949     SCTPCTL_INIT_RTO_MAX_DESC);
950 
951 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, valid_cookie_life, CTLTYPE_UINT | CTLFLAG_RW,
952     &SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default), 0, sysctl_sctp_check, "IU",
953     SCTPCTL_VALID_COOKIE_LIFE_DESC);
954 
955 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, init_rtx_max, CTLTYPE_UINT | CTLFLAG_RW,
956     &SCTP_BASE_SYSCTL(sctp_init_rtx_max_default), 0, sysctl_sctp_check, "IU",
957     SCTPCTL_INIT_RTX_MAX_DESC);
958 
959 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, assoc_rtx_max, CTLTYPE_UINT | CTLFLAG_RW,
960     &SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default), 0, sysctl_sctp_check, "IU",
961     SCTPCTL_ASSOC_RTX_MAX_DESC);
962 
963 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, path_rtx_max, CTLTYPE_UINT | CTLFLAG_RW,
964     &SCTP_BASE_SYSCTL(sctp_path_rtx_max_default), 0, sysctl_sctp_check, "IU",
965     SCTPCTL_PATH_RTX_MAX_DESC);
966 
967 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, add_more_on_output, CTLTYPE_UINT | CTLFLAG_RW,
968     &SCTP_BASE_SYSCTL(sctp_add_more_threshold), 0, sysctl_sctp_check, "IU",
969     SCTPCTL_ADD_MORE_ON_OUTPUT_DESC);
970 
971 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, outgoing_streams, CTLTYPE_UINT | CTLFLAG_RW,
972     &SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default), 0, sysctl_sctp_check, "IU",
973     SCTPCTL_OUTGOING_STREAMS_DESC);
974 
975 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, cmt_on_off, CTLTYPE_UINT | CTLFLAG_RW,
976     &SCTP_BASE_SYSCTL(sctp_cmt_on_off), 0, sysctl_sctp_check, "IU",
977     SCTPCTL_CMT_ON_OFF_DESC);
978 
979 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, nr_sack_on_off, CTLTYPE_UINT | CTLFLAG_RW,
980     &SCTP_BASE_SYSCTL(sctp_nr_sack_on_off), 0, sysctl_sctp_check, "IU",
981     SCTPCTL_NR_SACK_ON_OFF_DESC);
982 
983 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, cmt_use_dac, CTLTYPE_UINT | CTLFLAG_RW,
984     &SCTP_BASE_SYSCTL(sctp_cmt_use_dac), 0, sysctl_sctp_check, "IU",
985     SCTPCTL_CMT_USE_DAC_DESC);
986 
987 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, cmt_pf, CTLTYPE_UINT | CTLFLAG_RW,
988     &SCTP_BASE_SYSCTL(sctp_cmt_pf), 0, sysctl_sctp_check, "IU",
989     SCTPCTL_CMT_PF_DESC);
990 
991 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, cwnd_maxburst, CTLTYPE_UINT | CTLFLAG_RW,
992     &SCTP_BASE_SYSCTL(sctp_use_cwnd_based_maxburst), 0, sysctl_sctp_check, "IU",
993     SCTPCTL_CWND_MAXBURST_DESC);
994 
995 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, early_fast_retran, CTLTYPE_UINT | CTLFLAG_RW,
996     &SCTP_BASE_SYSCTL(sctp_early_fr), 0, sysctl_sctp_check, "IU",
997     SCTPCTL_EARLY_FAST_RETRAN_DESC);
998 
999 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, early_fast_retran_msec, CTLTYPE_UINT | CTLFLAG_RW,
1000     &SCTP_BASE_SYSCTL(sctp_early_fr_msec), 0, sysctl_sctp_check, "IU",
1001     SCTPCTL_EARLY_FAST_RETRAN_MSEC_DESC);
1002 
1003 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, asconf_auth_nochk, CTLTYPE_UINT | CTLFLAG_RW,
1004     &SCTP_BASE_SYSCTL(sctp_asconf_auth_nochk), 0, sysctl_sctp_check, "IU",
1005     SCTPCTL_ASCONF_AUTH_NOCHK_DESC);
1006 
1007 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, auth_disable, CTLTYPE_UINT | CTLFLAG_RW,
1008     &SCTP_BASE_SYSCTL(sctp_auth_disable), 0, sysctl_sctp_check, "IU",
1009     SCTPCTL_AUTH_DISABLE_DESC);
1010 
1011 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, nat_friendly, CTLTYPE_UINT | CTLFLAG_RW,
1012     &SCTP_BASE_SYSCTL(sctp_nat_friendly), 0, sysctl_sctp_check, "IU",
1013     SCTPCTL_NAT_FRIENDLY_DESC);
1014 
1015 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, abc_l_var, CTLTYPE_UINT | CTLFLAG_RW,
1016     &SCTP_BASE_SYSCTL(sctp_L2_abc_variable), 0, sysctl_sctp_check, "IU",
1017     SCTPCTL_ABC_L_VAR_DESC);
1018 
1019 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, max_chained_mbufs, CTLTYPE_UINT | CTLFLAG_RW,
1020     &SCTP_BASE_SYSCTL(sctp_mbuf_threshold_count), 0, sysctl_sctp_check, "IU",
1021     SCTPCTL_MAX_CHAINED_MBUFS_DESC);
1022 
1023 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, do_sctp_drain, CTLTYPE_UINT | CTLFLAG_RW,
1024     &SCTP_BASE_SYSCTL(sctp_do_drain), 0, sysctl_sctp_check, "IU",
1025     SCTPCTL_DO_SCTP_DRAIN_DESC);
1026 
1027 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, hb_max_burst, CTLTYPE_UINT | CTLFLAG_RW,
1028     &SCTP_BASE_SYSCTL(sctp_hb_maxburst), 0, sysctl_sctp_check, "IU",
1029     SCTPCTL_HB_MAX_BURST_DESC);
1030 
1031 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, abort_at_limit, CTLTYPE_UINT | CTLFLAG_RW,
1032     &SCTP_BASE_SYSCTL(sctp_abort_if_one_2_one_hits_limit), 0, sysctl_sctp_check, "IU",
1033     SCTPCTL_ABORT_AT_LIMIT_DESC);
1034 
1035 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, strict_data_order, CTLTYPE_UINT | CTLFLAG_RW,
1036     &SCTP_BASE_SYSCTL(sctp_strict_data_order), 0, sysctl_sctp_check, "IU",
1037     SCTPCTL_STRICT_DATA_ORDER_DESC);
1038 
1039 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, min_residual, CTLTYPE_UINT | CTLFLAG_RW,
1040     &SCTP_BASE_SYSCTL(sctp_min_residual), 0, sysctl_sctp_check, "IU",
1041     SCTPCTL_MIN_RESIDUAL_DESC);
1042 
1043 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, max_retran_chunk, CTLTYPE_UINT | CTLFLAG_RW,
1044     &SCTP_BASE_SYSCTL(sctp_max_retran_chunk), 0, sysctl_sctp_check, "IU",
1045     SCTPCTL_MAX_RETRAN_CHUNK_DESC);
1046 
1047 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, log_level, CTLTYPE_UINT | CTLFLAG_RW,
1048     &SCTP_BASE_SYSCTL(sctp_logging_level), 0, sysctl_sctp_check, "IU",
1049     SCTPCTL_LOGGING_LEVEL_DESC);
1050 
1051 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, default_cc_module, CTLTYPE_UINT | CTLFLAG_RW,
1052     &SCTP_BASE_SYSCTL(sctp_default_cc_module), 0, sysctl_sctp_check, "IU",
1053     SCTPCTL_DEFAULT_CC_MODULE_DESC);
1054 
1055 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, default_ss_module, CTLTYPE_UINT | CTLFLAG_RW,
1056     &SCTP_BASE_SYSCTL(sctp_default_ss_module), 0, sysctl_sctp_check, "IU",
1057     SCTPCTL_DEFAULT_SS_MODULE_DESC);
1058 
1059 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, default_frag_interleave, CTLTYPE_UINT | CTLFLAG_RW,
1060     &SCTP_BASE_SYSCTL(sctp_default_frag_interleave), 0, sysctl_sctp_check, "IU",
1061     SCTPCTL_DEFAULT_FRAG_INTERLEAVE_DESC);
1062 
1063 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, mobility_base, CTLTYPE_UINT | CTLFLAG_RW,
1064     &SCTP_BASE_SYSCTL(sctp_mobility_base), 0, sysctl_sctp_check, "IU",
1065     SCTPCTL_MOBILITY_BASE_DESC);
1066 
1067 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, mobility_fasthandoff, CTLTYPE_UINT | CTLFLAG_RW,
1068     &SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff), 0, sysctl_sctp_check, "IU",
1069     SCTPCTL_MOBILITY_FASTHANDOFF_DESC);
1070 
1071 #if defined(SCTP_LOCAL_TRACE_BUF)
1072 SYSCTL_VNET_STRUCT(_net_inet_sctp, OID_AUTO, log, CTLFLAG_RD,
1073     &SCTP_BASE_SYSCTL(sctp_log), sctp_log,
1074     "SCTP logging (struct sctp_log)");
1075 
1076 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, clear_trace, CTLTYPE_UINT | CTLFLAG_RW,
1077     &SCTP_BASE_SYSCTL(sctp_log), 0, sysctl_sctp_cleartrace, "IU",
1078     "Clear SCTP Logging buffer");
1079 #endif
1080 
1081 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, udp_tunneling_for_client_enable, CTLTYPE_UINT | CTLFLAG_RW,
1082     &SCTP_BASE_SYSCTL(sctp_udp_tunneling_for_client_enable), 0, sysctl_sctp_check, "IU",
1083     SCTPCTL_UDP_TUNNELING_FOR_CLIENT_ENABLE_DESC);
1084 
1085 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, udp_tunneling_port, CTLTYPE_UINT | CTLFLAG_RW,
1086     &SCTP_BASE_SYSCTL(sctp_udp_tunneling_port), 0, sysctl_sctp_udp_tunneling_check, "IU",
1087     SCTPCTL_UDP_TUNNELING_PORT_DESC);
1088 
1089 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, enable_sack_immediately, CTLTYPE_UINT | CTLFLAG_RW,
1090     &SCTP_BASE_SYSCTL(sctp_enable_sack_immediately), 0, sysctl_sctp_check, "IU",
1091     SCTPCTL_SACK_IMMEDIATELY_ENABLE_DESC);
1092 
1093 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, nat_friendly_init, CTLTYPE_UINT | CTLFLAG_RW,
1094     &SCTP_BASE_SYSCTL(sctp_inits_include_nat_friendly), 0, sysctl_sctp_check, "IU",
1095     SCTPCTL_NAT_FRIENDLY_INITS_DESC);
1096 
1097 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, vtag_time_wait, CTLTYPE_UINT | CTLFLAG_RW,
1098     &SCTP_BASE_SYSCTL(sctp_vtag_time_wait), 0, sysctl_sctp_check, "IU",
1099     SCTPCTL_TIME_WAIT_DESC);
1100 
1101 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, buffer_splitting, CTLTYPE_UINT | CTLFLAG_RW,
1102     &SCTP_BASE_SYSCTL(sctp_buffer_splitting), 0, sysctl_sctp_check, "IU",
1103     SCTPCTL_BUFFER_SPLITTING_DESC);
1104 
1105 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, initial_cwnd, CTLTYPE_UINT | CTLFLAG_RW,
1106     &SCTP_BASE_SYSCTL(sctp_initial_cwnd), 0, sysctl_sctp_check, "IU",
1107     SCTPCTL_INITIAL_CWND_DESC);
1108 
1109 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, rttvar_bw, CTLTYPE_UINT | CTLFLAG_RW,
1110     &SCTP_BASE_SYSCTL(sctp_rttvar_bw), 0, sysctl_sctp_check, "IU",
1111     SCTPCTL_RTTVAR_BW_DESC);
1112 
1113 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, rttvar_rtt, CTLTYPE_UINT | CTLFLAG_RW,
1114     &SCTP_BASE_SYSCTL(sctp_rttvar_rtt), 0, sysctl_sctp_check, "IU",
1115     SCTPCTL_RTTVAR_RTT_DESC);
1116 
1117 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, rttvar_eqret, CTLTYPE_UINT | CTLFLAG_RW,
1118     &SCTP_BASE_SYSCTL(sctp_rttvar_eqret), 0, sysctl_sctp_check, "IU",
1119     SCTPCTL_RTTVAR_EQRET_DESC);
1120 
1121 #ifdef SCTP_DEBUG
1122 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, debug, CTLTYPE_UINT | CTLFLAG_RW,
1123     &SCTP_BASE_SYSCTL(sctp_debug_on), 0, sysctl_sctp_check, "IU",
1124     SCTPCTL_DEBUG_DESC);
1125 #endif
1126 
1127 
1128 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1129 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, output_unlocked, CTLTYPE_UINT | CTLFLAG_RW,
1130     &SCTP_BASE_SYSCTL(sctp_output_unlocked), 0, sysctl_sctp_check, "IU",
1131     SCTPCTL_OUTPUT_UNLOCKED_DESC);
1132 #endif
1133 
1134 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
1135 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, stats,
1136     CTLTYPE_STRUCT | CTLFLAG_RW,
1137     0, 0, sysctl_stat_get, "S,sctpstat",
1138     "SCTP statistics (struct sctp_stat)");
1139 #else
1140 SYSCTL_VNET_STRUCT(_net_inet_sctp, OID_AUTO, stats, CTLFLAG_RW,
1141     &SCTP_BASE_STATS_SYSCTL, sctpstat,
1142     "SCTP statistics (struct sctp_stat)");
1143 #endif
1144 
1145 SYSCTL_VNET_PROC(_net_inet_sctp, OID_AUTO, assoclist, CTLTYPE_OPAQUE | CTLFLAG_RD,
1146     0, 0, sctp_assoclist,
1147     "S,xassoc", "List of active SCTP associations");
1148