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 (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
24 */
25
26 #include <sys/types.h>
27 #include <sys/systm.h>
28 #include <sys/stream.h>
29 #include <sys/cmn_err.h>
30 #include <sys/kmem.h>
31 #define _SUN_TPI_VERSION 2
32 #include <sys/tihdr.h>
33 #include <sys/stropts.h>
34 #include <sys/strsubr.h>
35 #include <sys/socket.h>
36 #include <sys/tsol/tndb.h>
37
38 #include <netinet/in.h>
39 #include <netinet/ip6.h>
40
41 #include <inet/common.h>
42 #include <inet/ip.h>
43 #include <inet/ip6.h>
44 #include <inet/ipclassifier.h>
45 #include <inet/ipsec_impl.h>
46
47 #include "sctp_impl.h"
48 #include "sctp_addr.h"
49
50 /*
51 * Common accept code. Called by sctp_conn_request.
52 * cr_pkt is the INIT / INIT ACK packet.
53 */
54 static int
sctp_accept_comm(sctp_t * listener,sctp_t * acceptor,mblk_t * cr_pkt,uint_t ip_hdr_len,sctp_init_chunk_t * iack)55 sctp_accept_comm(sctp_t *listener, sctp_t *acceptor, mblk_t *cr_pkt,
56 uint_t ip_hdr_len, sctp_init_chunk_t *iack)
57 {
58
59 sctp_hdr_t *sctph;
60 sctp_chunk_hdr_t *ich;
61 sctp_init_chunk_t *init;
62 int err;
63 uint_t sctp_options;
64 conn_t *aconnp;
65 conn_t *lconnp;
66 sctp_stack_t *sctps = listener->sctp_sctps;
67
68 sctph = (sctp_hdr_t *)(cr_pkt->b_rptr + ip_hdr_len);
69 ASSERT(OK_32PTR(sctph));
70
71 aconnp = acceptor->sctp_connp;
72 lconnp = listener->sctp_connp;
73 aconnp->conn_lport = lconnp->conn_lport;
74 aconnp->conn_fport = sctph->sh_sport;
75
76 ich = (sctp_chunk_hdr_t *)(iack + 1);
77 init = (sctp_init_chunk_t *)(ich + 1);
78
79 /* acceptor isn't in any fanouts yet, so don't need to hold locks */
80 ASSERT(acceptor->sctp_faddrs == NULL);
81 err = sctp_get_addrparams(acceptor, listener, cr_pkt, ich,
82 &sctp_options);
83 if (err != 0)
84 return (err);
85
86 if ((err = sctp_set_hdraddrs(acceptor)) != 0)
87 return (err);
88
89 if ((err = sctp_build_hdrs(acceptor, KM_NOSLEEP)) != 0)
90 return (err);
91
92 if ((sctp_options & SCTP_PRSCTP_OPTION) &&
93 listener->sctp_prsctp_aware && sctps->sctps_prsctp_enabled) {
94 acceptor->sctp_prsctp_aware = B_TRUE;
95 } else {
96 acceptor->sctp_prsctp_aware = B_FALSE;
97 }
98
99 /* Get initial TSNs */
100 acceptor->sctp_ltsn = ntohl(iack->sic_inittsn);
101 acceptor->sctp_recovery_tsn = acceptor->sctp_lastack_rxd =
102 acceptor->sctp_ltsn - 1;
103 acceptor->sctp_adv_pap = acceptor->sctp_lastack_rxd;
104 /* Serial numbers are initialized to the same value as the TSNs */
105 acceptor->sctp_lcsn = acceptor->sctp_ltsn;
106
107 if (!sctp_initialize_params(acceptor, init, iack))
108 return (ENOMEM);
109
110 /*
111 * Copy sctp_secret from the listener in case we need to validate
112 * a possibly delayed cookie.
113 */
114 bcopy(listener->sctp_secret, acceptor->sctp_secret, SCTP_SECRET_LEN);
115 bcopy(listener->sctp_old_secret, acceptor->sctp_old_secret,
116 SCTP_SECRET_LEN);
117 acceptor->sctp_last_secret_update = ddi_get_lbolt64();
118
119 /*
120 * After acceptor is inserted in the hash list, it can be found.
121 * So we need to lock it here.
122 */
123 RUN_SCTP(acceptor);
124
125 sctp_conn_hash_insert(&sctps->sctps_conn_fanout[
126 SCTP_CONN_HASH(sctps, aconnp->conn_ports)], acceptor, 0);
127 sctp_bind_hash_insert(&sctps->sctps_bind_fanout[
128 SCTP_BIND_HASH(ntohs(aconnp->conn_lport))], acceptor, 0);
129
130 SCTP_ASSOC_EST(sctps, acceptor);
131 return (0);
132 }
133
134 /* Process the COOKIE packet, mp, directed at the listener 'sctp' */
135 sctp_t *
sctp_conn_request(sctp_t * sctp,mblk_t * mp,uint_t ifindex,uint_t ip_hdr_len,sctp_init_chunk_t * iack,ip_recv_attr_t * ira)136 sctp_conn_request(sctp_t *sctp, mblk_t *mp, uint_t ifindex, uint_t ip_hdr_len,
137 sctp_init_chunk_t *iack, ip_recv_attr_t *ira)
138 {
139 sctp_t *eager;
140 ip6_t *ip6h;
141 int err;
142 conn_t *connp, *econnp;
143 sctp_stack_t *sctps;
144 cred_t *cr;
145 pid_t cpid;
146 in6_addr_t faddr, laddr;
147 ip_xmit_attr_t *ixa;
148 sctp_listen_cnt_t *slc = sctp->sctp_listen_cnt;
149 boolean_t slc_set = B_FALSE;
150
151 /*
152 * No need to check for duplicate as this is the listener
153 * and we are holding the lock. This means that no new
154 * connection can be created out of it. And since the
155 * fanout already done cannot find a match, it means that
156 * there is no duplicate.
157 */
158 ASSERT(OK_32PTR(mp->b_rptr));
159
160 connp = sctp->sctp_connp;
161 sctps = sctp->sctp_sctps;
162
163 /*
164 * Enforce the limit set on the number of connections per listener.
165 * Note that tlc_cnt starts with 1. So need to add 1 to tlc_max
166 * for comparison.
167 */
168 if (slc != NULL) {
169 int64_t now;
170
171 if (atomic_inc_32_nv(&slc->slc_cnt) > slc->slc_max + 1) {
172 now = ddi_get_lbolt64();
173 atomic_dec_32(&slc->slc_cnt);
174 SCTP_KSTAT(sctps, sctp_listen_cnt_drop);
175 slc->slc_drop++;
176 if (now - slc->slc_report_time >
177 MSEC_TO_TICK(SCTP_SLC_REPORT_INTERVAL)) {
178 zcmn_err(connp->conn_zoneid, CE_WARN,
179 "SCTP listener (port %d) association max "
180 "(%u) reached: %u attempts dropped total\n",
181 ntohs(connp->conn_lport),
182 slc->slc_max, slc->slc_drop);
183 slc->slc_report_time = now;
184 }
185 return (NULL);
186 }
187 slc_set = B_TRUE;
188 }
189
190 if ((eager = sctp_create_eager(sctp)) == NULL) {
191 if (slc_set)
192 atomic_dec_32(&slc->slc_cnt);
193 return (NULL);
194 }
195 econnp = eager->sctp_connp;
196
197 if (connp->conn_policy != NULL) {
198 /* Inherit the policy from the listener; use actions from ira */
199 if (!ip_ipsec_policy_inherit(econnp, connp, ira)) {
200 sctp_close_eager(eager);
201 SCTPS_BUMP_MIB(sctps, sctpListenDrop);
202 return (NULL);
203 }
204 }
205
206 ip6h = (ip6_t *)mp->b_rptr;
207 if (ira->ira_flags & IXAF_IS_IPV4) {
208 ipha_t *ipha;
209
210 ipha = (ipha_t *)ip6h;
211 IN6_IPADDR_TO_V4MAPPED(ipha->ipha_dst, &laddr);
212 IN6_IPADDR_TO_V4MAPPED(ipha->ipha_src, &faddr);
213 } else {
214 laddr = ip6h->ip6_dst;
215 faddr = ip6h->ip6_src;
216 }
217
218 if (ira->ira_flags & IRAF_IPSEC_SECURE) {
219 /*
220 * XXX need to fix the cached policy issue here.
221 * We temporarily set the conn_laddr/conn_faddr here so
222 * that IPsec can use it for the latched policy
223 * selector. This is obvioursly wrong as SCTP can
224 * use different addresses...
225 */
226 econnp->conn_laddr_v6 = laddr;
227 econnp->conn_faddr_v6 = faddr;
228 econnp->conn_saddr_v6 = laddr;
229 }
230 if (ipsec_conn_cache_policy(econnp,
231 (ira->ira_flags & IRAF_IS_IPV4) != 0) != 0) {
232 sctp_close_eager(eager);
233 SCTPS_BUMP_MIB(sctps, sctpListenDrop);
234 return (NULL);
235 }
236
237 /* Save for getpeerucred */
238 cr = ira->ira_cred;
239 cpid = ira->ira_cpid;
240
241 if (is_system_labeled()) {
242 ip_xmit_attr_t *ixa = econnp->conn_ixa;
243
244 ASSERT(ira->ira_tsl != NULL);
245
246 /* Discard any old label */
247 if (ixa->ixa_free_flags & IXA_FREE_TSL) {
248 ASSERT(ixa->ixa_tsl != NULL);
249 label_rele(ixa->ixa_tsl);
250 ixa->ixa_free_flags &= ~IXA_FREE_TSL;
251 ixa->ixa_tsl = NULL;
252 }
253
254 if ((connp->conn_mlp_type != mlptSingle ||
255 connp->conn_mac_mode != CONN_MAC_DEFAULT) &&
256 ira->ira_tsl != NULL) {
257 /*
258 * If this is an MLP connection or a MAC-Exempt
259 * connection with an unlabeled node, packets are to be
260 * exchanged using the security label of the received
261 * Cookie packet instead of the server application's
262 * label.
263 * tsol_check_dest called from ip_set_destination
264 * might later update TSF_UNLABELED by replacing
265 * ixa_tsl with a new label.
266 */
267 label_hold(ira->ira_tsl);
268 ip_xmit_attr_replace_tsl(ixa, ira->ira_tsl);
269 } else {
270 ixa->ixa_tsl = crgetlabel(econnp->conn_cred);
271 }
272 }
273
274 err = sctp_accept_comm(sctp, eager, mp, ip_hdr_len, iack);
275 if (err != 0) {
276 sctp_close_eager(eager);
277 SCTPS_BUMP_MIB(sctps, sctpListenDrop);
278 return (NULL);
279 }
280
281 ASSERT(eager->sctp_current->sf_ixa != NULL);
282
283 ixa = eager->sctp_current->sf_ixa;
284 if (!(ira->ira_flags & IXAF_IS_IPV4)) {
285 ASSERT(!(ixa->ixa_flags & IXAF_IS_IPV4));
286
287 if (IN6_IS_ADDR_LINKLOCAL(&ip6h->ip6_src) ||
288 IN6_IS_ADDR_LINKLOCAL(&ip6h->ip6_dst)) {
289 eager->sctp_linklocal = 1;
290
291 ixa->ixa_flags |= IXAF_SCOPEID_SET;
292 ixa->ixa_scopeid = ifindex;
293 econnp->conn_incoming_ifindex = ifindex;
294 }
295 }
296
297 /*
298 * On a clustered note send this notification to the clustering
299 * subsystem.
300 */
301 if (cl_sctp_connect != NULL) {
302 uchar_t *slist;
303 uchar_t *flist;
304 size_t fsize;
305 size_t ssize;
306
307 fsize = sizeof (in6_addr_t) * eager->sctp_nfaddrs;
308 ssize = sizeof (in6_addr_t) * eager->sctp_nsaddrs;
309 slist = kmem_alloc(ssize, KM_NOSLEEP);
310 flist = kmem_alloc(fsize, KM_NOSLEEP);
311 if (slist == NULL || flist == NULL) {
312 if (slist != NULL)
313 kmem_free(slist, ssize);
314 if (flist != NULL)
315 kmem_free(flist, fsize);
316 sctp_close_eager(eager);
317 SCTPS_BUMP_MIB(sctps, sctpListenDrop);
318 SCTP_KSTAT(sctps, sctp_cl_connect);
319 return (NULL);
320 }
321 /* The clustering module frees these list */
322 sctp_get_saddr_list(eager, slist, ssize);
323 sctp_get_faddr_list(eager, flist, fsize);
324 (*cl_sctp_connect)(econnp->conn_family, slist,
325 eager->sctp_nsaddrs, econnp->conn_lport, flist,
326 eager->sctp_nfaddrs, econnp->conn_fport, B_FALSE,
327 (cl_sctp_handle_t)eager);
328 }
329
330 /* Connection established, so send up the conn_ind */
331 if ((eager->sctp_ulpd = sctp->sctp_ulp_newconn(sctp->sctp_ulpd,
332 (sock_lower_handle_t)eager, NULL, cr, cpid,
333 &eager->sctp_upcalls)) == NULL) {
334 sctp_close_eager(eager);
335 SCTPS_BUMP_MIB(sctps, sctpListenDrop);
336 return (NULL);
337 }
338 ASSERT(SCTP_IS_DETACHED(eager));
339 eager->sctp_detached = B_FALSE;
340 return (eager);
341 }
342
343 /*
344 * Connect to a peer - this function inserts the sctp in the
345 * bind and conn fanouts, sends the INIT, and replies to the client
346 * with an OK ack.
347 */
348 int
sctp_connect(sctp_t * sctp,const struct sockaddr * dst,uint32_t addrlen,cred_t * cr,pid_t pid)349 sctp_connect(sctp_t *sctp, const struct sockaddr *dst, uint32_t addrlen,
350 cred_t *cr, pid_t pid)
351 {
352 sin_t *sin;
353 sin6_t *sin6;
354 in6_addr_t dstaddr;
355 in_port_t dstport;
356 mblk_t *initmp;
357 sctp_tf_t *tbf;
358 sctp_t *lsctp;
359 char buf[INET6_ADDRSTRLEN];
360 int sleep = sctp->sctp_cansleep ? KM_SLEEP : KM_NOSLEEP;
361 int err;
362 sctp_faddr_t *cur_fp;
363 sctp_stack_t *sctps = sctp->sctp_sctps;
364 conn_t *connp = sctp->sctp_connp;
365 uint_t scope_id = 0;
366 ip_xmit_attr_t *ixa;
367
368 /*
369 * Determine packet type based on type of address passed in
370 * the request should contain an IPv4 or IPv6 address.
371 * Make sure that address family matches the type of
372 * family of the address passed down.
373 */
374 if (addrlen < sizeof (sin_t)) {
375 return (EINVAL);
376 }
377 switch (dst->sa_family) {
378 case AF_INET:
379 sin = (sin_t *)dst;
380
381 /* Check for attempt to connect to non-unicast */
382 if (CLASSD(sin->sin_addr.s_addr) ||
383 (sin->sin_addr.s_addr == INADDR_BROADCAST)) {
384 ip0dbg(("sctp_connect: non-unicast\n"));
385 return (EINVAL);
386 }
387 if (connp->conn_ipv6_v6only)
388 return (EAFNOSUPPORT);
389
390 /* convert to v6 mapped */
391 /* Check for attempt to connect to INADDR_ANY */
392 if (sin->sin_addr.s_addr == INADDR_ANY) {
393 struct in_addr v4_addr;
394 /*
395 * SunOS 4.x and 4.3 BSD allow an application
396 * to connect a TCP socket to INADDR_ANY.
397 * When they do this, the kernel picks the
398 * address of one interface and uses it
399 * instead. The kernel usually ends up
400 * picking the address of the loopback
401 * interface. This is an undocumented feature.
402 * However, we provide the same thing here
403 * in case any TCP apps that use this feature
404 * are being ported to SCTP...
405 */
406 v4_addr.s_addr = htonl(INADDR_LOOPBACK);
407 IN6_INADDR_TO_V4MAPPED(&v4_addr, &dstaddr);
408 } else {
409 IN6_INADDR_TO_V4MAPPED(&sin->sin_addr, &dstaddr);
410 }
411 dstport = sin->sin_port;
412 break;
413 case AF_INET6:
414 sin6 = (sin6_t *)dst;
415 /* Check for attempt to connect to non-unicast. */
416 if ((addrlen < sizeof (sin6_t)) ||
417 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
418 ip0dbg(("sctp_connect: non-unicast\n"));
419 return (EINVAL);
420 }
421 if (connp->conn_ipv6_v6only &&
422 IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
423 return (EAFNOSUPPORT);
424 }
425 /* check for attempt to connect to unspec */
426 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
427 dstaddr = ipv6_loopback;
428 } else {
429 dstaddr = sin6->sin6_addr;
430 if (IN6_IS_ADDR_LINKLOCAL(&dstaddr)) {
431 sctp->sctp_linklocal = 1;
432 scope_id = sin6->sin6_scope_id;
433 }
434 }
435 dstport = sin6->sin6_port;
436 connp->conn_flowinfo = sin6->sin6_flowinfo;
437 break;
438 default:
439 dprint(1, ("sctp_connect: unknown family %d\n",
440 dst->sa_family));
441 return (EAFNOSUPPORT);
442 }
443
444 (void) inet_ntop(AF_INET6, &dstaddr, buf, sizeof (buf));
445 dprint(1, ("sctp_connect: attempting connect to %s...\n", buf));
446
447 RUN_SCTP(sctp);
448
449 if (connp->conn_family != dst->sa_family ||
450 (connp->conn_state_flags & CONN_CLOSING)) {
451 WAKE_SCTP(sctp);
452 return (EINVAL);
453 }
454
455 /* We update our cred/cpid based on the caller of connect */
456 if (connp->conn_cred != cr) {
457 crhold(cr);
458 crfree(connp->conn_cred);
459 connp->conn_cred = cr;
460 }
461 connp->conn_cpid = pid;
462
463 /* Cache things in conn_ixa without any refhold */
464 ixa = connp->conn_ixa;
465 ASSERT(!(ixa->ixa_free_flags & IXA_FREE_CRED));
466 ixa->ixa_cred = cr;
467 ixa->ixa_cpid = pid;
468 if (is_system_labeled()) {
469 /* We need to restart with a label based on the cred */
470 ip_xmit_attr_restore_tsl(ixa, ixa->ixa_cred);
471 }
472
473 switch (sctp->sctp_state) {
474 case SCTPS_IDLE: {
475 struct sockaddr_storage ss;
476
477 /*
478 * We support a quick connect capability here, allowing
479 * clients to transition directly from IDLE to COOKIE_WAIT.
480 * sctp_bindi will pick an unused port, insert the connection
481 * in the bind hash and transition to BOUND state. SCTP
482 * picks and uses what it considers the optimal local address
483 * set (just like specifiying INADDR_ANY to bind()).
484 */
485 dprint(1, ("sctp_connect: idle, attempting bind...\n"));
486 ASSERT(sctp->sctp_nsaddrs == 0);
487
488 bzero(&ss, sizeof (ss));
489 ss.ss_family = connp->conn_family;
490 WAKE_SCTP(sctp);
491 if ((err = sctp_bind(sctp, (struct sockaddr *)&ss,
492 sizeof (ss))) != 0) {
493 return (err);
494 }
495 RUN_SCTP(sctp);
496 }
497 /* FALLTHROUGH */
498
499 case SCTPS_BOUND:
500 ASSERT(sctp->sctp_nsaddrs > 0);
501
502 /* do the connect */
503 /* XXX check for attempt to connect to self */
504 connp->conn_fport = dstport;
505
506 /*
507 * Don't allow this connection to completely duplicate
508 * an existing connection.
509 *
510 * Ensure that the duplicate check and insertion is atomic.
511 */
512 sctp_conn_hash_remove(sctp);
513 tbf = &sctps->sctps_conn_fanout[SCTP_CONN_HASH(sctps,
514 connp->conn_ports)];
515 mutex_enter(&tbf->tf_lock);
516 lsctp = sctp_lookup(sctp, &dstaddr, tbf, &connp->conn_ports,
517 SCTPS_COOKIE_WAIT);
518 if (lsctp != NULL) {
519 /* found a duplicate connection */
520 mutex_exit(&tbf->tf_lock);
521 SCTP_REFRELE(lsctp);
522 WAKE_SCTP(sctp);
523 return (EADDRINUSE);
524 }
525
526 /*
527 * OK; set up the peer addr (this may grow after we get
528 * the INIT ACK from the peer with additional addresses).
529 */
530 if ((err = sctp_add_faddr(sctp, &dstaddr, sleep,
531 B_FALSE)) != 0) {
532 mutex_exit(&tbf->tf_lock);
533 WAKE_SCTP(sctp);
534 return (err);
535 }
536 cur_fp = sctp->sctp_faddrs;
537 ASSERT(cur_fp->sf_ixa != NULL);
538
539 /* No valid src addr, return. */
540 if (cur_fp->sf_state == SCTP_FADDRS_UNREACH) {
541 mutex_exit(&tbf->tf_lock);
542 WAKE_SCTP(sctp);
543 return (EADDRNOTAVAIL);
544 }
545
546 sctp->sctp_primary = cur_fp;
547 sctp->sctp_current = cur_fp;
548 sctp->sctp_mss = cur_fp->sf_pmss;
549 sctp_conn_hash_insert(tbf, sctp, 1);
550 mutex_exit(&tbf->tf_lock);
551
552 ixa = cur_fp->sf_ixa;
553 ASSERT(ixa->ixa_cred != NULL);
554
555 if (scope_id != 0) {
556 ixa->ixa_flags |= IXAF_SCOPEID_SET;
557 ixa->ixa_scopeid = scope_id;
558 } else {
559 ixa->ixa_flags &= ~IXAF_SCOPEID_SET;
560 }
561
562 /* initialize composite headers */
563 if ((err = sctp_set_hdraddrs(sctp)) != 0) {
564 sctp_conn_hash_remove(sctp);
565 WAKE_SCTP(sctp);
566 return (err);
567 }
568
569 if ((err = sctp_build_hdrs(sctp, KM_SLEEP)) != 0) {
570 sctp_conn_hash_remove(sctp);
571 WAKE_SCTP(sctp);
572 return (err);
573 }
574
575 /*
576 * Turn off the don't fragment bit on the (only) faddr,
577 * so that if one of the messages exchanged during the
578 * initialization sequence exceeds the path mtu, it
579 * at least has a chance to get there. SCTP does no
580 * fragmentation of initialization messages. The DF bit
581 * will be turned on again in sctp_send_cookie_echo()
582 * (but the cookie echo will still be sent with the df bit
583 * off).
584 */
585 cur_fp->sf_df = B_FALSE;
586
587 /* Mark this address as alive */
588 cur_fp->sf_state = SCTP_FADDRS_ALIVE;
589
590 /* Send the INIT to the peer */
591 SCTP_FADDR_TIMER_RESTART(sctp, cur_fp, cur_fp->sf_rto);
592 sctp->sctp_state = SCTPS_COOKIE_WAIT;
593 /*
594 * sctp_init_mp() could result in modifying the source
595 * address list, so take the hash lock.
596 */
597 mutex_enter(&tbf->tf_lock);
598 initmp = sctp_init_mp(sctp, cur_fp);
599 if (initmp == NULL) {
600 mutex_exit(&tbf->tf_lock);
601 /*
602 * It may happen that all the source addresses
603 * (loopback/link local) are removed. In that case,
604 * faile the connect.
605 */
606 if (sctp->sctp_nsaddrs == 0) {
607 sctp_conn_hash_remove(sctp);
608 SCTP_FADDR_TIMER_STOP(cur_fp);
609 WAKE_SCTP(sctp);
610 return (EADDRNOTAVAIL);
611 }
612
613 /* Otherwise, let the retransmission timer retry */
614 WAKE_SCTP(sctp);
615 goto notify_ulp;
616 }
617 mutex_exit(&tbf->tf_lock);
618
619 /*
620 * On a clustered note send this notification to the clustering
621 * subsystem.
622 */
623 if (cl_sctp_connect != NULL) {
624 uchar_t *slist;
625 uchar_t *flist;
626 size_t ssize;
627 size_t fsize;
628
629 fsize = sizeof (in6_addr_t) * sctp->sctp_nfaddrs;
630 ssize = sizeof (in6_addr_t) * sctp->sctp_nsaddrs;
631 slist = kmem_alloc(ssize, KM_SLEEP);
632 flist = kmem_alloc(fsize, KM_SLEEP);
633 /* The clustering module frees the lists */
634 sctp_get_saddr_list(sctp, slist, ssize);
635 sctp_get_faddr_list(sctp, flist, fsize);
636 (*cl_sctp_connect)(connp->conn_family, slist,
637 sctp->sctp_nsaddrs, connp->conn_lport,
638 flist, sctp->sctp_nfaddrs, connp->conn_fport,
639 B_TRUE, (cl_sctp_handle_t)sctp);
640 }
641 ASSERT(ixa->ixa_cred != NULL);
642 ASSERT(ixa->ixa_ire != NULL);
643
644 (void) conn_ip_output(initmp, ixa);
645 BUMP_LOCAL(sctp->sctp_opkts);
646 WAKE_SCTP(sctp);
647
648 notify_ulp:
649 sctp_set_ulp_prop(sctp);
650
651 return (0);
652 default:
653 ip0dbg(("sctp_connect: invalid state. %d\n", sctp->sctp_state));
654 WAKE_SCTP(sctp);
655 return (EINVAL);
656 }
657 }
658