xref: /illumos-gate/usr/src/uts/common/inet/sctp/sctp_snmp.c (revision c85864d8472aaccb47ceb468ebd9b3a85b66d161)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #include <sys/types.h>
28 #include <sys/stream.h>
29 #include <sys/cmn_err.h>
30 #define	_SUN_TPI_VERSION 2
31 #include <sys/tihdr.h>
32 #include <sys/ddi.h>
33 #include <sys/sunddi.h>
34 #include <sys/tsol/tndb.h>
35 
36 #include <netinet/in.h>
37 
38 #include <inet/common.h>
39 #include <inet/ip.h>
40 #include <inet/mib2.h>
41 #include <inet/snmpcom.h>
42 #include <inet/kstatcom.h>
43 #include <inet/ipclassifier.h>
44 #include "sctp_impl.h"
45 #include "sctp_addr.h"
46 
47 static int sctp_snmp_state(sctp_t *sctp);
48 
49 
50 static int
51 sctp_kstat_update(kstat_t *kp, int rw)
52 {
53 	sctp_named_kstat_t	*sctpkp;
54 	sctp_t			*sctp, *sctp_prev;
55 	zoneid_t	myzoneid;
56 	netstackid_t	stackid = (netstackid_t)(uintptr_t)kp->ks_private;
57 	netstack_t	*ns;
58 	sctp_stack_t	*sctps;
59 
60 	if (kp == NULL|| kp->ks_data == NULL)
61 		return (EIO);
62 
63 	if (rw == KSTAT_WRITE)
64 		return (EACCES);
65 
66 	ns = netstack_find_by_stackid(stackid);
67 	if (ns == NULL)
68 		return (-1);
69 	sctps = ns->netstack_sctp;
70 	if (sctps == NULL) {
71 		netstack_rele(ns);
72 		return (-1);
73 	}
74 	myzoneid = netstackid_to_zoneid(stackid);
75 
76 	/*
77 	 * Get the number of current associations and gather their
78 	 * individual set of statistics.
79 	 */
80 	SET_MIB(sctps->sctps_mib.sctpCurrEstab, 0);
81 	sctp = sctps->sctps_gsctp;
82 	sctp_prev = NULL;
83 	mutex_enter(&sctps->sctps_g_lock);
84 	while (sctp != NULL) {
85 		mutex_enter(&sctp->sctp_reflock);
86 		if (sctp->sctp_condemned) {
87 			mutex_exit(&sctp->sctp_reflock);
88 			sctp = list_next(&sctps->sctps_g_list, sctp);
89 			continue;
90 		}
91 		sctp->sctp_refcnt++;
92 		mutex_exit(&sctp->sctp_reflock);
93 		mutex_exit(&sctps->sctps_g_lock);
94 		if (sctp_prev != NULL)
95 			SCTP_REFRELE(sctp_prev);
96 		if (sctp->sctp_connp->conn_zoneid != myzoneid)
97 			goto next_sctp;
98 		if (sctp->sctp_state == SCTPS_ESTABLISHED ||
99 		    sctp->sctp_state == SCTPS_SHUTDOWN_PENDING ||
100 		    sctp->sctp_state == SCTPS_SHUTDOWN_RECEIVED) {
101 			BUMP_MIB(&sctps->sctps_mib, sctpCurrEstab);
102 		}
103 
104 		if (sctp->sctp_opkts) {
105 			UPDATE_MIB(&sctps->sctps_mib, sctpOutSCTPPkts,
106 			    sctp->sctp_opkts);
107 			sctp->sctp_opkts = 0;
108 		}
109 
110 		if (sctp->sctp_obchunks) {
111 			UPDATE_MIB(&sctps->sctps_mib, sctpOutCtrlChunks,
112 			    sctp->sctp_obchunks);
113 			sctp->sctp_obchunks = 0;
114 		}
115 
116 		if (sctp->sctp_odchunks) {
117 			UPDATE_MIB(&sctps->sctps_mib, sctpOutOrderChunks,
118 			    sctp->sctp_odchunks);
119 			sctp->sctp_odchunks = 0;
120 		}
121 
122 		if (sctp->sctp_oudchunks) {
123 			UPDATE_MIB(&sctps->sctps_mib, sctpOutUnorderChunks,
124 			    sctp->sctp_oudchunks);
125 			sctp->sctp_oudchunks = 0;
126 		}
127 
128 		if (sctp->sctp_rxtchunks) {
129 			UPDATE_MIB(&sctps->sctps_mib, sctpRetransChunks,
130 			    sctp->sctp_rxtchunks);
131 			sctp->sctp_rxtchunks = 0;
132 		}
133 
134 		if (sctp->sctp_ipkts) {
135 			UPDATE_MIB(&sctps->sctps_mib, sctpInSCTPPkts,
136 			    sctp->sctp_ipkts);
137 			sctp->sctp_ipkts = 0;
138 		}
139 
140 		if (sctp->sctp_ibchunks) {
141 			UPDATE_MIB(&sctps->sctps_mib, sctpInCtrlChunks,
142 			    sctp->sctp_ibchunks);
143 			sctp->sctp_ibchunks = 0;
144 		}
145 
146 		if (sctp->sctp_idchunks) {
147 			UPDATE_MIB(&sctps->sctps_mib, sctpInOrderChunks,
148 			    sctp->sctp_idchunks);
149 			sctp->sctp_idchunks = 0;
150 		}
151 
152 		if (sctp->sctp_iudchunks) {
153 			UPDATE_MIB(&sctps->sctps_mib, sctpInUnorderChunks,
154 			    sctp->sctp_iudchunks);
155 			sctp->sctp_iudchunks = 0;
156 		}
157 
158 		if (sctp->sctp_fragdmsgs) {
159 			UPDATE_MIB(&sctps->sctps_mib, sctpFragUsrMsgs,
160 			    sctp->sctp_fragdmsgs);
161 			sctp->sctp_fragdmsgs = 0;
162 		}
163 
164 		if (sctp->sctp_reassmsgs) {
165 			UPDATE_MIB(&sctps->sctps_mib, sctpReasmUsrMsgs,
166 			    sctp->sctp_reassmsgs);
167 			sctp->sctp_reassmsgs = 0;
168 		}
169 
170 next_sctp:
171 		sctp_prev = sctp;
172 		mutex_enter(&sctps->sctps_g_lock);
173 		sctp = list_next(&sctps->sctps_g_list, sctp);
174 	}
175 	mutex_exit(&sctps->sctps_g_lock);
176 	if (sctp_prev != NULL)
177 		SCTP_REFRELE(sctp_prev);
178 
179 	/* Copy data from the SCTP MIB */
180 	sctpkp = (sctp_named_kstat_t *)kp->ks_data;
181 
182 	/* These are from global ndd params. */
183 	sctpkp->sctpRtoMin.value.ui32 = sctps->sctps_rto_ming;
184 	sctpkp->sctpRtoMax.value.ui32 = sctps->sctps_rto_maxg;
185 	sctpkp->sctpRtoInitial.value.ui32 = sctps->sctps_rto_initialg;
186 	sctpkp->sctpValCookieLife.value.ui32 = sctps->sctps_cookie_life;
187 	sctpkp->sctpMaxInitRetr.value.ui32 = sctps->sctps_max_init_retr;
188 
189 	sctpkp->sctpCurrEstab.value.i32 = sctps->sctps_mib.sctpCurrEstab;
190 	sctpkp->sctpActiveEstab.value.i32 = sctps->sctps_mib.sctpActiveEstab;
191 	sctpkp->sctpPassiveEstab.value.i32 = sctps->sctps_mib.sctpPassiveEstab;
192 	sctpkp->sctpAborted.value.i32 = sctps->sctps_mib.sctpAborted;
193 	sctpkp->sctpShutdowns.value.i32 = sctps->sctps_mib.sctpShutdowns;
194 	sctpkp->sctpOutOfBlue.value.i32 = sctps->sctps_mib.sctpOutOfBlue;
195 	sctpkp->sctpChecksumError.value.i32 =
196 	    sctps->sctps_mib.sctpChecksumError;
197 	sctpkp->sctpOutCtrlChunks.value.i64 =
198 	    sctps->sctps_mib.sctpOutCtrlChunks;
199 	sctpkp->sctpOutOrderChunks.value.i64 =
200 	    sctps->sctps_mib.sctpOutOrderChunks;
201 	sctpkp->sctpOutUnorderChunks.value.i64 =
202 	    sctps->sctps_mib.sctpOutUnorderChunks;
203 	sctpkp->sctpRetransChunks.value.i64 =
204 	    sctps->sctps_mib.sctpRetransChunks;
205 	sctpkp->sctpOutAck.value.i32 = sctps->sctps_mib.sctpOutAck;
206 	sctpkp->sctpOutAckDelayed.value.i32 =
207 	    sctps->sctps_mib.sctpOutAckDelayed;
208 	sctpkp->sctpOutWinUpdate.value.i32 = sctps->sctps_mib.sctpOutWinUpdate;
209 	sctpkp->sctpOutFastRetrans.value.i32 =
210 	    sctps->sctps_mib.sctpOutFastRetrans;
211 	sctpkp->sctpOutWinProbe.value.i32 = sctps->sctps_mib.sctpOutWinProbe;
212 	sctpkp->sctpInCtrlChunks.value.i64 = sctps->sctps_mib.sctpInCtrlChunks;
213 	sctpkp->sctpInOrderChunks.value.i64 =
214 	    sctps->sctps_mib.sctpInOrderChunks;
215 	sctpkp->sctpInUnorderChunks.value.i64 =
216 	    sctps->sctps_mib.sctpInUnorderChunks;
217 	sctpkp->sctpInAck.value.i32 = sctps->sctps_mib.sctpInAck;
218 	sctpkp->sctpInDupAck.value.i32 = sctps->sctps_mib.sctpInDupAck;
219 	sctpkp->sctpInAckUnsent.value.i32 = sctps->sctps_mib.sctpInAckUnsent;
220 	sctpkp->sctpFragUsrMsgs.value.i64 = sctps->sctps_mib.sctpFragUsrMsgs;
221 	sctpkp->sctpReasmUsrMsgs.value.i64 = sctps->sctps_mib.sctpReasmUsrMsgs;
222 	sctpkp->sctpOutSCTPPkts.value.i64 = sctps->sctps_mib.sctpOutSCTPPkts;
223 	sctpkp->sctpInSCTPPkts.value.i64 = sctps->sctps_mib.sctpInSCTPPkts;
224 	sctpkp->sctpInInvalidCookie.value.i32 =
225 	    sctps->sctps_mib.sctpInInvalidCookie;
226 	sctpkp->sctpTimRetrans.value.i32 = sctps->sctps_mib.sctpTimRetrans;
227 	sctpkp->sctpTimRetransDrop.value.i32 =
228 	    sctps->sctps_mib.sctpTimRetransDrop;
229 	sctpkp->sctpTimHeartBeatProbe.value.i32 =
230 	    sctps->sctps_mib.sctpTimHeartBeatProbe;
231 	sctpkp->sctpTimHeartBeatDrop.value.i32 =
232 	    sctps->sctps_mib.sctpTimHeartBeatDrop;
233 	sctpkp->sctpListenDrop.value.i32 = sctps->sctps_mib.sctpListenDrop;
234 	sctpkp->sctpInClosed.value.i32 = sctps->sctps_mib.sctpInClosed;
235 
236 	netstack_rele(ns);
237 	return (0);
238 }
239 
240 void *
241 sctp_kstat_init(netstackid_t stackid)
242 {
243 	kstat_t	*ksp;
244 
245 	sctp_named_kstat_t template = {
246 		{ "sctpRtoAlgorithm",		KSTAT_DATA_INT32, 0 },
247 		{ "sctpRtoMin",			KSTAT_DATA_UINT32, 0 },
248 		{ "sctpRtoMax",			KSTAT_DATA_UINT32, 0 },
249 		{ "sctpRtoInitial",		KSTAT_DATA_UINT32, 0 },
250 		{ "sctpMaxAssocs",		KSTAT_DATA_INT32, 0 },
251 		{ "sctpValCookieLife",		KSTAT_DATA_UINT32, 0 },
252 		{ "sctpMaxInitRetr",		KSTAT_DATA_UINT32, 0 },
253 		{ "sctpCurrEstab",		KSTAT_DATA_INT32, 0 },
254 		{ "sctpActiveEstab",		KSTAT_DATA_INT32, 0 },
255 		{ "sctpPassiveEstab",		KSTAT_DATA_INT32, 0 },
256 		{ "sctpAborted",		KSTAT_DATA_INT32, 0 },
257 		{ "sctpShutdowns",		KSTAT_DATA_INT32, 0 },
258 		{ "sctpOutOfBlue",		KSTAT_DATA_INT32, 0 },
259 		{ "sctpChecksumError",		KSTAT_DATA_INT32, 0 },
260 		{ "sctpOutCtrlChunks",		KSTAT_DATA_INT64, 0 },
261 		{ "sctpOutOrderChunks",		KSTAT_DATA_INT64, 0 },
262 		{ "sctpOutUnorderChunks",	KSTAT_DATA_INT64, 0 },
263 		{ "sctpRetransChunks",		KSTAT_DATA_INT64, 0 },
264 		{ "sctpOutAck",			KSTAT_DATA_INT32, 0 },
265 		{ "sctpOutAckDelayed",		KSTAT_DATA_INT32, 0 },
266 		{ "sctpOutWinUpdate",		KSTAT_DATA_INT32, 0 },
267 		{ "sctpOutFastRetrans",		KSTAT_DATA_INT32, 0 },
268 		{ "sctpOutWinProbe",		KSTAT_DATA_INT32, 0 },
269 		{ "sctpInCtrlChunks",		KSTAT_DATA_INT64, 0 },
270 		{ "sctpInOrderChunks",		KSTAT_DATA_INT64, 0 },
271 		{ "sctpInUnorderChunks",	KSTAT_DATA_INT64, 0 },
272 		{ "sctpInAck",			KSTAT_DATA_INT32, 0 },
273 		{ "sctpInDupAck",		KSTAT_DATA_INT32, 0 },
274 		{ "sctpInAckUnsent",		KSTAT_DATA_INT32, 0 },
275 		{ "sctpFragUsrMsgs",		KSTAT_DATA_INT64, 0 },
276 		{ "sctpReasmUsrMsgs",		KSTAT_DATA_INT64, 0 },
277 		{ "sctpOutSCTPPkts",		KSTAT_DATA_INT64, 0 },
278 		{ "sctpInSCTPPkts",		KSTAT_DATA_INT64, 0 },
279 		{ "sctpInInvalidCookie",	KSTAT_DATA_INT32, 0 },
280 		{ "sctpTimRetrans",		KSTAT_DATA_INT32, 0 },
281 		{ "sctpTimRetransDrop",		KSTAT_DATA_INT32, 0 },
282 		{ "sctpTimHearBeatProbe",	KSTAT_DATA_INT32, 0 },
283 		{ "sctpTimHearBeatDrop",	KSTAT_DATA_INT32, 0 },
284 		{ "sctpListenDrop",		KSTAT_DATA_INT32, 0 },
285 		{ "sctpInClosed",		KSTAT_DATA_INT32, 0 }
286 	};
287 
288 	ksp = kstat_create_netstack(SCTP_MOD_NAME, 0, "sctp", "mib2",
289 	    KSTAT_TYPE_NAMED, NUM_OF_FIELDS(sctp_named_kstat_t), 0, stackid);
290 
291 	if (ksp == NULL || ksp->ks_data == NULL)
292 		return (NULL);
293 
294 	/* These won't change. */
295 	template.sctpRtoAlgorithm.value.i32 = MIB2_SCTP_RTOALGO_VANJ;
296 	template.sctpMaxAssocs.value.i32 = -1;
297 
298 	bcopy(&template, ksp->ks_data, sizeof (template));
299 	ksp->ks_update = sctp_kstat_update;
300 	ksp->ks_private = (void *)(uintptr_t)stackid;
301 
302 	kstat_install(ksp);
303 	return (ksp);
304 }
305 
306 /*
307  * The following kstats are for debugging purposes.  They keep
308  * track of problems which should not happen normally.  But in
309  * those cases which they do happen, these kstats would be handy
310  * for engineers to diagnose the problems.  They are not intended
311  * to be consumed by customers.
312  */
313 void *
314 sctp_kstat2_init(netstackid_t stackid, sctp_kstat_t *sctps_statisticsp)
315 {
316 	kstat_t *ksp;
317 
318 	sctp_kstat_t template = {
319 		{ "sctp_add_faddr",			KSTAT_DATA_UINT64 },
320 		{ "sctp_add_timer",			KSTAT_DATA_UINT64 },
321 		{ "sctp_conn_create",			KSTAT_DATA_UINT64 },
322 		{ "sctp_find_next_tq",			KSTAT_DATA_UINT64 },
323 		{ "sctp_fr_add_hdr",			KSTAT_DATA_UINT64 },
324 		{ "sctp_fr_not_found",			KSTAT_DATA_UINT64 },
325 		{ "sctp_output_failed",			KSTAT_DATA_UINT64 },
326 		{ "sctp_rexmit_failed",			KSTAT_DATA_UINT64 },
327 		{ "sctp_send_init_failed",		KSTAT_DATA_UINT64 },
328 		{ "sctp_send_cookie_failed",		KSTAT_DATA_UINT64 },
329 		{ "sctp_send_cookie_ack_failed",	KSTAT_DATA_UINT64 },
330 		{ "sctp_send_err_failed",		KSTAT_DATA_UINT64 },
331 		{ "sctp_send_sack_failed",		KSTAT_DATA_UINT64 },
332 		{ "sctp_send_shutdown_failed",		KSTAT_DATA_UINT64 },
333 		{ "sctp_send_shutdown_ack_failed",	KSTAT_DATA_UINT64 },
334 		{ "sctp_send_shutdown_comp_failed",	KSTAT_DATA_UINT64 },
335 		{ "sctp_send_user_abort_failed",	KSTAT_DATA_UINT64 },
336 		{ "sctp_send_asconf_failed",		KSTAT_DATA_UINT64 },
337 		{ "sctp_send_asconf_ack_failed",	KSTAT_DATA_UINT64 },
338 		{ "sctp_send_ftsn_failed",		KSTAT_DATA_UINT64 },
339 		{ "sctp_send_hb_failed",		KSTAT_DATA_UINT64 },
340 		{ "sctp_return_hb_failed",		KSTAT_DATA_UINT64 },
341 		{ "sctp_ss_rexmit_failed",		KSTAT_DATA_UINT64 },
342 		{ "sctp_cl_connect",			KSTAT_DATA_UINT64 },
343 		{ "sctp_cl_assoc_change",		KSTAT_DATA_UINT64 },
344 		{ "sctp_cl_check_addrs",		KSTAT_DATA_UINT64 },
345 	};
346 
347 	ksp = kstat_create_netstack(SCTP_MOD_NAME, 0, "sctpstat", "net",
348 	    KSTAT_TYPE_NAMED, NUM_OF_FIELDS(template), KSTAT_FLAG_VIRTUAL,
349 	    stackid);
350 
351 	if (ksp == NULL)
352 		return (NULL);
353 
354 	bcopy(&template, sctps_statisticsp, sizeof (template));
355 	ksp->ks_data = (void *)sctps_statisticsp;
356 	ksp->ks_private = (void *)(uintptr_t)stackid;
357 
358 	kstat_install(ksp);
359 	return (ksp);
360 }
361 
362 void
363 sctp_kstat_fini(netstackid_t stackid, kstat_t *ksp)
364 {
365 	if (ksp != NULL) {
366 		ASSERT(stackid == (netstackid_t)(uintptr_t)ksp->ks_private);
367 		kstat_delete_netstack(ksp, stackid);
368 	}
369 }
370 
371 void
372 sctp_kstat2_fini(netstackid_t stackid, kstat_t *ksp)
373 {
374 	if (ksp != NULL) {
375 		ASSERT(stackid == (netstackid_t)(uintptr_t)ksp->ks_private);
376 		kstat_delete_netstack(ksp, stackid);
377 	}
378 }
379 
380 /*
381  * Return SNMP global stats in buffer in mpdata.
382  * Return associatiation table in mp_conn_data,
383  * local address table in mp_local_data, and
384  * remote address table in mp_rem_data.
385  */
386 mblk_t *
387 sctp_snmp_get_mib2(queue_t *q, mblk_t *mpctl, sctp_stack_t *sctps)
388 {
389 	mblk_t			*mpdata, *mp_ret;
390 	mblk_t			*mp_conn_ctl = NULL;
391 	mblk_t			*mp_conn_data;
392 	mblk_t			*mp_conn_tail = NULL;
393 	mblk_t			*mp_local_ctl = NULL;
394 	mblk_t			*mp_local_data;
395 	mblk_t			*mp_local_tail = NULL;
396 	mblk_t			*mp_rem_ctl = NULL;
397 	mblk_t			*mp_rem_data;
398 	mblk_t			*mp_rem_tail = NULL;
399 	mblk_t			*mp_attr_ctl = NULL;
400 	mblk_t			*mp_attr_data;
401 	mblk_t			*mp_attr_tail = NULL;
402 	struct opthdr		*optp;
403 	sctp_t			*sctp, *sctp_prev = NULL;
404 	sctp_faddr_t		*fp;
405 	mib2_sctpConnEntry_t	sce;
406 	mib2_sctpConnLocalEntry_t	scle;
407 	mib2_sctpConnRemoteEntry_t	scre;
408 	mib2_transportMLPEntry_t	mlp;
409 	int			i;
410 	int			l;
411 	int			scanned = 0;
412 	zoneid_t		zoneid = Q_TO_CONN(q)->conn_zoneid;
413 	conn_t			*connp;
414 	boolean_t		needattr;
415 	int			idx;
416 
417 	/*
418 	 * Make copies of the original message.
419 	 * mpctl will hold SCTP counters,
420 	 * mp_conn_ctl will hold list of connections.
421 	 */
422 	mp_ret = copymsg(mpctl);
423 	mp_conn_ctl = copymsg(mpctl);
424 	mp_local_ctl = copymsg(mpctl);
425 	mp_rem_ctl = copymsg(mpctl);
426 	mp_attr_ctl = copymsg(mpctl);
427 
428 	mpdata = mpctl->b_cont;
429 
430 	if (mp_conn_ctl == NULL || mp_local_ctl == NULL ||
431 	    mp_rem_ctl == NULL || mp_attr_ctl == NULL || mpdata == NULL) {
432 		freemsg(mp_attr_ctl);
433 		freemsg(mp_rem_ctl);
434 		freemsg(mp_local_ctl);
435 		freemsg(mp_conn_ctl);
436 		freemsg(mp_ret);
437 		freemsg(mpctl);
438 		return (NULL);
439 	}
440 	mp_conn_data = mp_conn_ctl->b_cont;
441 	mp_local_data = mp_local_ctl->b_cont;
442 	mp_rem_data = mp_rem_ctl->b_cont;
443 	mp_attr_data = mp_attr_ctl->b_cont;
444 
445 	/* hostname address parameters are not supported in Solaris */
446 	sce.sctpAssocRemHostName.o_length = 0;
447 	sce.sctpAssocRemHostName.o_bytes[0] = 0;
448 
449 	/* build table of connections -- need count in fixed part */
450 	SET_MIB(sctps->sctps_mib.sctpRtoAlgorithm, MIB2_SCTP_RTOALGO_VANJ);
451 	SET_MIB(sctps->sctps_mib.sctpRtoMin, sctps->sctps_rto_ming);
452 	SET_MIB(sctps->sctps_mib.sctpRtoMax, sctps->sctps_rto_maxg);
453 	SET_MIB(sctps->sctps_mib.sctpRtoInitial, sctps->sctps_rto_initialg);
454 	SET_MIB(sctps->sctps_mib.sctpMaxAssocs, -1);
455 	SET_MIB(sctps->sctps_mib.sctpValCookieLife, sctps->sctps_cookie_life);
456 	SET_MIB(sctps->sctps_mib.sctpMaxInitRetr, sctps->sctps_max_init_retr);
457 	SET_MIB(sctps->sctps_mib.sctpCurrEstab, 0);
458 
459 	idx = 0;
460 	sctp = sctps->sctps_gsctp;
461 	mutex_enter(&sctps->sctps_g_lock);
462 	while (sctp != NULL) {
463 		mutex_enter(&sctp->sctp_reflock);
464 		if (sctp->sctp_condemned) {
465 			mutex_exit(&sctp->sctp_reflock);
466 			sctp = list_next(&sctps->sctps_g_list, sctp);
467 			continue;
468 		}
469 		sctp->sctp_refcnt++;
470 		mutex_exit(&sctp->sctp_reflock);
471 		mutex_exit(&sctps->sctps_g_lock);
472 		if (sctp_prev != NULL)
473 			SCTP_REFRELE(sctp_prev);
474 		if (sctp->sctp_connp->conn_zoneid != zoneid)
475 			goto next_sctp;
476 		if (sctp->sctp_state == SCTPS_ESTABLISHED ||
477 		    sctp->sctp_state == SCTPS_SHUTDOWN_PENDING ||
478 		    sctp->sctp_state == SCTPS_SHUTDOWN_RECEIVED) {
479 			BUMP_MIB(&sctps->sctps_mib, sctpCurrEstab);
480 		}
481 		UPDATE_MIB(&sctps->sctps_mib,
482 		    sctpOutSCTPPkts, sctp->sctp_opkts);
483 		sctp->sctp_opkts = 0;
484 		UPDATE_MIB(&sctps->sctps_mib,
485 		    sctpOutCtrlChunks, sctp->sctp_obchunks);
486 		sctp->sctp_obchunks = 0;
487 		UPDATE_MIB(&sctps->sctps_mib,
488 		    sctpOutOrderChunks, sctp->sctp_odchunks);
489 		sctp->sctp_odchunks = 0;
490 		UPDATE_MIB(&sctps->sctps_mib, sctpOutUnorderChunks,
491 		    sctp->sctp_oudchunks);
492 		sctp->sctp_oudchunks = 0;
493 		UPDATE_MIB(&sctps->sctps_mib,
494 		    sctpRetransChunks, sctp->sctp_rxtchunks);
495 		sctp->sctp_rxtchunks = 0;
496 		UPDATE_MIB(&sctps->sctps_mib,
497 		    sctpInSCTPPkts, sctp->sctp_ipkts);
498 		sctp->sctp_ipkts = 0;
499 		UPDATE_MIB(&sctps->sctps_mib,
500 		    sctpInCtrlChunks, sctp->sctp_ibchunks);
501 		sctp->sctp_ibchunks = 0;
502 		UPDATE_MIB(&sctps->sctps_mib,
503 		    sctpInOrderChunks, sctp->sctp_idchunks);
504 		sctp->sctp_idchunks = 0;
505 		UPDATE_MIB(&sctps->sctps_mib, sctpInUnorderChunks,
506 		    sctp->sctp_iudchunks);
507 		sctp->sctp_iudchunks = 0;
508 		UPDATE_MIB(&sctps->sctps_mib,
509 		    sctpFragUsrMsgs, sctp->sctp_fragdmsgs);
510 		sctp->sctp_fragdmsgs = 0;
511 		UPDATE_MIB(&sctps->sctps_mib,
512 		    sctpReasmUsrMsgs, sctp->sctp_reassmsgs);
513 		sctp->sctp_reassmsgs = 0;
514 
515 		sce.sctpAssocId = ntohl(sctp->sctp_lvtag);
516 		sce.sctpAssocLocalPort = ntohs(sctp->sctp_lport);
517 		sce.sctpAssocRemPort = ntohs(sctp->sctp_fport);
518 
519 		RUN_SCTP(sctp);
520 		if (sctp->sctp_primary != NULL) {
521 			fp = sctp->sctp_primary;
522 
523 			if (IN6_IS_ADDR_V4MAPPED(&fp->faddr)) {
524 				sce.sctpAssocRemPrimAddrType =
525 				    MIB2_SCTP_ADDR_V4;
526 			} else {
527 				sce.sctpAssocRemPrimAddrType =
528 				    MIB2_SCTP_ADDR_V6;
529 			}
530 			sce.sctpAssocRemPrimAddr = fp->faddr;
531 			sce.sctpAssocLocPrimAddr = fp->saddr;
532 			sce.sctpAssocHeartBeatInterval = TICK_TO_MSEC(
533 			    fp->hb_interval);
534 		} else {
535 			sce.sctpAssocRemPrimAddrType = MIB2_SCTP_ADDR_V4;
536 			bzero(&sce.sctpAssocRemPrimAddr,
537 			    sizeof (sce.sctpAssocRemPrimAddr));
538 			bzero(&sce.sctpAssocLocPrimAddr,
539 			    sizeof (sce.sctpAssocLocPrimAddr));
540 			sce.sctpAssocHeartBeatInterval =
541 			    sctps->sctps_heartbeat_interval;
542 		}
543 
544 		/*
545 		 * Table for local addresses
546 		 */
547 		scanned = 0;
548 		for (i = 0; i < SCTP_IPIF_HASH; i++) {
549 			sctp_saddr_ipif_t	*obj;
550 
551 			if (sctp->sctp_saddrs[i].ipif_count == 0)
552 				continue;
553 			obj = list_head(&sctp->sctp_saddrs[i].sctp_ipif_list);
554 			for (l = 0; l < sctp->sctp_saddrs[i].ipif_count; l++) {
555 				sctp_ipif_t	*sctp_ipif;
556 				in6_addr_t	addr;
557 
558 				sctp_ipif = obj->saddr_ipifp;
559 				addr = sctp_ipif->sctp_ipif_saddr;
560 				scanned++;
561 				scle.sctpAssocId = ntohl(sctp->sctp_lvtag);
562 				if (IN6_IS_ADDR_V4MAPPED(&addr)) {
563 					scle.sctpAssocLocalAddrType =
564 					    MIB2_SCTP_ADDR_V4;
565 				} else {
566 					scle.sctpAssocLocalAddrType =
567 					    MIB2_SCTP_ADDR_V6;
568 				}
569 				scle.sctpAssocLocalAddr = addr;
570 				(void) snmp_append_data2(mp_local_data,
571 				    &mp_local_tail, (char *)&scle,
572 				    sizeof (scle));
573 				if (scanned >= sctp->sctp_nsaddrs)
574 					goto done;
575 				obj = list_next(&sctp->
576 				    sctp_saddrs[i].sctp_ipif_list, obj);
577 			}
578 		}
579 done:
580 		/*
581 		 * Table for remote addresses
582 		 */
583 		for (fp = sctp->sctp_faddrs; fp; fp = fp->next) {
584 			scre.sctpAssocId = ntohl(sctp->sctp_lvtag);
585 			if (IN6_IS_ADDR_V4MAPPED(&fp->faddr)) {
586 				scre.sctpAssocRemAddrType = MIB2_SCTP_ADDR_V4;
587 			} else {
588 				scre.sctpAssocRemAddrType = MIB2_SCTP_ADDR_V6;
589 			}
590 			scre.sctpAssocRemAddr = fp->faddr;
591 			if (fp->state == SCTP_FADDRS_ALIVE) {
592 				scre.sctpAssocRemAddrActive =
593 				    scre.sctpAssocRemAddrHBActive =
594 				    MIB2_SCTP_ACTIVE;
595 			} else {
596 				scre.sctpAssocRemAddrActive =
597 				    scre.sctpAssocRemAddrHBActive =
598 				    MIB2_SCTP_INACTIVE;
599 			}
600 			scre.sctpAssocRemAddrRTO = TICK_TO_MSEC(fp->rto);
601 			scre.sctpAssocRemAddrMaxPathRtx = fp->max_retr;
602 			scre.sctpAssocRemAddrRtx = fp->T3expire;
603 			(void) snmp_append_data2(mp_rem_data, &mp_rem_tail,
604 			    (char *)&scre, sizeof (scre));
605 		}
606 		connp = sctp->sctp_connp;
607 		needattr = B_FALSE;
608 		bzero(&mlp, sizeof (mlp));
609 		if (connp->conn_mlp_type != mlptSingle) {
610 			if (connp->conn_mlp_type == mlptShared ||
611 			    connp->conn_mlp_type == mlptBoth)
612 				mlp.tme_flags |= MIB2_TMEF_SHARED;
613 			if (connp->conn_mlp_type == mlptPrivate ||
614 			    connp->conn_mlp_type == mlptBoth)
615 				mlp.tme_flags |= MIB2_TMEF_PRIVATE;
616 			needattr = B_TRUE;
617 		}
618 		if (connp->conn_anon_mlp) {
619 			mlp.tme_flags |= MIB2_TMEF_ANONMLP;
620 			needattr = B_TRUE;
621 		}
622 		if (connp->conn_mac_exempt) {
623 			mlp.tme_flags |= MIB2_TMEF_MACEXEMPT;
624 			needattr = B_TRUE;
625 		}
626 		if (connp->conn_fully_bound &&
627 		    connp->conn_effective_cred != NULL) {
628 			ts_label_t *tsl;
629 
630 			tsl = crgetlabel(connp->conn_effective_cred);
631 			mlp.tme_flags |= MIB2_TMEF_IS_LABELED;
632 			mlp.tme_doi = label2doi(tsl);
633 			mlp.tme_label = *label2bslabel(tsl);
634 			needattr = B_TRUE;
635 		}
636 		WAKE_SCTP(sctp);
637 		sce.sctpAssocState = sctp_snmp_state(sctp);
638 		sce.sctpAssocInStreams = sctp->sctp_num_istr;
639 		sce.sctpAssocOutStreams = sctp->sctp_num_ostr;
640 		sce.sctpAssocMaxRetr = sctp->sctp_pa_max_rxt;
641 		/* A 0 here indicates that no primary process is known */
642 		sce.sctpAssocPrimProcess = 0;
643 		sce.sctpAssocT1expired = sctp->sctp_T1expire;
644 		sce.sctpAssocT2expired = sctp->sctp_T2expire;
645 		sce.sctpAssocRtxChunks = sctp->sctp_T3expire;
646 		sce.sctpAssocStartTime = sctp->sctp_assoc_start_time;
647 		sce.sctpConnEntryInfo.ce_sendq = sctp->sctp_unacked +
648 		    sctp->sctp_unsent;
649 		sce.sctpConnEntryInfo.ce_recvq = sctp->sctp_rxqueued;
650 		sce.sctpConnEntryInfo.ce_swnd = sctp->sctp_frwnd;
651 		sce.sctpConnEntryInfo.ce_rwnd = sctp->sctp_rwnd;
652 		sce.sctpConnEntryInfo.ce_mss = sctp->sctp_mss;
653 		(void) snmp_append_data2(mp_conn_data, &mp_conn_tail,
654 		    (char *)&sce, sizeof (sce));
655 		mlp.tme_connidx = idx++;
656 		if (needattr)
657 			(void) snmp_append_data2(mp_attr_ctl->b_cont,
658 			    &mp_attr_tail, (char *)&mlp, sizeof (mlp));
659 next_sctp:
660 		sctp_prev = sctp;
661 		mutex_enter(&sctps->sctps_g_lock);
662 		sctp = list_next(&sctps->sctps_g_list, sctp);
663 	}
664 	mutex_exit(&sctps->sctps_g_lock);
665 	if (sctp_prev != NULL)
666 		SCTP_REFRELE(sctp_prev);
667 
668 	/* fixed length structure for IPv4 and IPv6 counters */
669 	SET_MIB(sctps->sctps_mib.sctpEntrySize, sizeof (sce));
670 	SET_MIB(sctps->sctps_mib.sctpLocalEntrySize, sizeof (scle));
671 	SET_MIB(sctps->sctps_mib.sctpRemoteEntrySize, sizeof (scre));
672 	optp = (struct opthdr *)&mpctl->b_rptr[sizeof (struct T_optmgmt_ack)];
673 	optp->level = MIB2_SCTP;
674 	optp->name = 0;
675 	(void) snmp_append_data(mpdata, (char *)&sctps->sctps_mib,
676 	    sizeof (sctps->sctps_mib));
677 	optp->len = msgdsize(mpdata);
678 	qreply(q, mpctl);
679 
680 	/* table of connections... */
681 	optp = (struct opthdr *)&mp_conn_ctl->b_rptr[
682 	    sizeof (struct T_optmgmt_ack)];
683 	optp->level = MIB2_SCTP;
684 	optp->name = MIB2_SCTP_CONN;
685 	optp->len = msgdsize(mp_conn_data);
686 	qreply(q, mp_conn_ctl);
687 
688 	/* assoc local address table */
689 	optp = (struct opthdr *)&mp_local_ctl->b_rptr[
690 	    sizeof (struct T_optmgmt_ack)];
691 	optp->level = MIB2_SCTP;
692 	optp->name = MIB2_SCTP_CONN_LOCAL;
693 	optp->len = msgdsize(mp_local_data);
694 	qreply(q, mp_local_ctl);
695 
696 	/* assoc remote address table */
697 	optp = (struct opthdr *)&mp_rem_ctl->b_rptr[
698 	    sizeof (struct T_optmgmt_ack)];
699 	optp->level = MIB2_SCTP;
700 	optp->name = MIB2_SCTP_CONN_REMOTE;
701 	optp->len = msgdsize(mp_rem_data);
702 	qreply(q, mp_rem_ctl);
703 
704 	/* table of MLP attributes */
705 	optp = (struct opthdr *)&mp_attr_ctl->b_rptr[
706 	    sizeof (struct T_optmgmt_ack)];
707 	optp->level = MIB2_SCTP;
708 	optp->name = EXPER_XPORT_MLP;
709 	optp->len = msgdsize(mp_attr_data);
710 	if (optp->len == 0)
711 		freemsg(mp_attr_ctl);
712 	else
713 		qreply(q, mp_attr_ctl);
714 
715 	return (mp_ret);
716 }
717 
718 /* Translate SCTP state to MIB2 SCTP state. */
719 static int
720 sctp_snmp_state(sctp_t *sctp)
721 {
722 	if (sctp == NULL)
723 		return (0);
724 
725 	switch (sctp->sctp_state) {
726 	case SCTPS_IDLE:
727 	case SCTPS_BOUND:
728 		return (MIB2_SCTP_closed);
729 	case SCTPS_LISTEN:
730 		return (MIB2_SCTP_listen);
731 	case SCTPS_COOKIE_WAIT:
732 		return (MIB2_SCTP_cookieWait);
733 	case SCTPS_COOKIE_ECHOED:
734 		return (MIB2_SCTP_cookieEchoed);
735 	case SCTPS_ESTABLISHED:
736 		return (MIB2_SCTP_established);
737 	case SCTPS_SHUTDOWN_PENDING:
738 		return (MIB2_SCTP_shutdownPending);
739 	case SCTPS_SHUTDOWN_SENT:
740 		return (MIB2_SCTP_shutdownSent);
741 	case SCTPS_SHUTDOWN_RECEIVED:
742 		return (MIB2_SCTP_shutdownReceived);
743 	case SCTPS_SHUTDOWN_ACK_SENT:
744 		return (MIB2_SCTP_shutdownAckSent);
745 	default:
746 		return (0);
747 	}
748 }
749