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/systm.h> 29 #include <sys/stream.h> 30 #include <sys/cmn_err.h> 31 #include <sys/kmem.h> 32 #define _SUN_TPI_VERSION 2 33 #include <sys/tihdr.h> 34 #include <sys/stropts.h> 35 #include <sys/strsubr.h> 36 #include <sys/socket.h> 37 #include <sys/tsol/tndb.h> 38 39 #include <netinet/in.h> 40 #include <netinet/ip6.h> 41 42 #include <inet/common.h> 43 #include <inet/ip.h> 44 #include <inet/ip6.h> 45 #include <inet/ipclassifier.h> 46 #include <inet/ipsec_impl.h> 47 48 #include "sctp_impl.h" 49 #include "sctp_addr.h" 50 51 /* 52 * Common accept code. Called by sctp_conn_request. 53 * cr_pkt is the INIT / INIT ACK packet. 54 */ 55 static int 56 sctp_accept_comm(sctp_t *listener, sctp_t *acceptor, mblk_t *cr_pkt, 57 uint_t ip_hdr_len, sctp_init_chunk_t *iack) 58 { 59 60 sctp_hdr_t *sctph; 61 sctp_chunk_hdr_t *ich; 62 sctp_init_chunk_t *init; 63 int err; 64 uint_t sctp_options; 65 conn_t *aconnp; 66 conn_t *lconnp; 67 cred_t *cr; 68 sctp_stack_t *sctps = listener->sctp_sctps; 69 70 sctph = (sctp_hdr_t *)(cr_pkt->b_rptr + ip_hdr_len); 71 ASSERT(OK_32PTR(sctph)); 72 73 acceptor->sctp_lport = listener->sctp_lport; 74 acceptor->sctp_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 aconnp = acceptor->sctp_connp; 87 lconnp = listener->sctp_connp; 88 if (lconnp->conn_mlp_type != mlptSingle) { 89 cr = aconnp->conn_peercred = msg_getcred(cr_pkt, NULL); 90 if (cr != NULL) 91 crhold(cr); 92 } 93 94 if ((err = sctp_set_hdraddrs(acceptor)) != 0) 95 return (err); 96 97 if ((sctp_options & SCTP_PRSCTP_OPTION) && 98 listener->sctp_prsctp_aware && sctps->sctps_prsctp_enabled) { 99 acceptor->sctp_prsctp_aware = B_TRUE; 100 } else { 101 acceptor->sctp_prsctp_aware = B_FALSE; 102 } 103 /* The new sctp_t is fully bound now. */ 104 acceptor->sctp_connp->conn_fully_bound = B_TRUE; 105 106 /* Get initial TSNs */ 107 acceptor->sctp_ltsn = ntohl(iack->sic_inittsn); 108 acceptor->sctp_recovery_tsn = acceptor->sctp_lastack_rxd = 109 acceptor->sctp_ltsn - 1; 110 acceptor->sctp_adv_pap = acceptor->sctp_lastack_rxd; 111 /* Serial numbers are initialized to the same value as the TSNs */ 112 acceptor->sctp_lcsn = acceptor->sctp_ltsn; 113 114 if (!sctp_initialize_params(acceptor, init, iack)) 115 return (ENOMEM); 116 117 /* 118 * Copy sctp_secret from the listener in case we need to validate 119 * a possibly delayed cookie. 120 */ 121 bcopy(listener->sctp_secret, acceptor->sctp_secret, SCTP_SECRET_LEN); 122 bcopy(listener->sctp_old_secret, acceptor->sctp_old_secret, 123 SCTP_SECRET_LEN); 124 acceptor->sctp_last_secret_update = lbolt64; 125 126 /* 127 * After acceptor is inserted in the hash list, it can be found. 128 * So we need to lock it here. 129 */ 130 RUN_SCTP(acceptor); 131 132 sctp_conn_hash_insert(&sctps->sctps_conn_fanout[ 133 SCTP_CONN_HASH(sctps, acceptor->sctp_ports)], acceptor, 0); 134 sctp_bind_hash_insert(&sctps->sctps_bind_fanout[ 135 SCTP_BIND_HASH(ntohs(acceptor->sctp_lport))], acceptor, 0); 136 137 /* 138 * No need to check for multicast destination since ip will only pass 139 * up multicasts to those that have expressed interest 140 * TODO: what about rejecting broadcasts? 141 * Also check that source is not a multicast or broadcast address. 142 */ 143 /* XXXSCTP */ 144 acceptor->sctp_state = SCTPS_ESTABLISHED; 145 acceptor->sctp_assoc_start_time = (uint32_t)lbolt; 146 /* 147 * listener->sctp_rwnd should be the default window size or a 148 * window size changed via SO_RCVBUF option. 149 */ 150 acceptor->sctp_rwnd = listener->sctp_rwnd; 151 acceptor->sctp_irwnd = acceptor->sctp_rwnd; 152 acceptor->sctp_pd_point = acceptor->sctp_rwnd; 153 acceptor->sctp_upcalls = listener->sctp_upcalls; 154 155 return (0); 156 } 157 158 /* Process the COOKIE packet, mp, directed at the listener 'sctp' */ 159 sctp_t * 160 sctp_conn_request(sctp_t *sctp, mblk_t *mp, uint_t ifindex, uint_t ip_hdr_len, 161 sctp_init_chunk_t *iack, mblk_t *ipsec_mp) 162 { 163 sctp_t *eager; 164 uint_t ipvers; 165 ip6_t *ip6h; 166 int err; 167 conn_t *connp, *econnp; 168 sctp_stack_t *sctps; 169 struct sock_proto_props sopp; 170 cred_t *cr; 171 pid_t cpid; 172 173 /* 174 * No need to check for duplicate as this is the listener 175 * and we are holding the lock. This means that no new 176 * connection can be created out of it. And since the 177 * fanout already done cannot find a match, it means that 178 * there is no duplicate. 179 */ 180 ipvers = IPH_HDR_VERSION(mp->b_rptr); 181 ASSERT(ipvers == IPV6_VERSION || ipvers == IPV4_VERSION); 182 ASSERT(OK_32PTR(mp->b_rptr)); 183 184 if ((eager = sctp_create_eager(sctp)) == NULL) { 185 return (NULL); 186 } 187 188 if (ipvers != IPV4_VERSION) { 189 ip6h = (ip6_t *)mp->b_rptr; 190 if (IN6_IS_ADDR_LINKLOCAL(&ip6h->ip6_src)) 191 eager->sctp_linklocal = 1; 192 /* 193 * Record ifindex (might be zero) to tie this connection to 194 * that interface if either the listener was bound or 195 * if the connection is using link-local addresses. 196 */ 197 if (sctp->sctp_bound_if == ifindex || 198 IN6_IS_ADDR_LINKLOCAL(&ip6h->ip6_src)) 199 eager->sctp_bound_if = ifindex; 200 /* 201 * XXX broken. bound_if is always overwritten by statement 202 * below. What is the right thing to do here? 203 */ 204 eager->sctp_bound_if = sctp->sctp_bound_if; 205 } 206 207 connp = sctp->sctp_connp; 208 sctps = sctp->sctp_sctps; 209 econnp = eager->sctp_connp; 210 211 if (connp->conn_policy != NULL) { 212 ipsec_in_t *ii; 213 214 ASSERT(ipsec_mp != NULL); 215 ii = (ipsec_in_t *)(ipsec_mp->b_rptr); 216 ASSERT(ii->ipsec_in_policy == NULL); 217 IPPH_REFHOLD(connp->conn_policy); 218 ii->ipsec_in_policy = connp->conn_policy; 219 220 ipsec_mp->b_datap->db_type = IPSEC_POLICY_SET; 221 if (!ip_bind_ipsec_policy_set(econnp, ipsec_mp)) { 222 sctp_close_eager(eager); 223 BUMP_MIB(&sctps->sctps_mib, sctpListenDrop); 224 return (NULL); 225 } 226 } 227 228 if (ipsec_mp != NULL) { 229 /* 230 * XXX need to fix the cached policy issue here. 231 * We temporarily set the conn_src/conn_rem here so 232 * that IPsec can use it for the latched policy 233 * selector. This is obvioursly wrong as SCTP can 234 * use different addresses... 235 */ 236 if (ipvers == IPV4_VERSION) { 237 ipha_t *ipha; 238 239 ipha = (ipha_t *)mp->b_rptr; 240 econnp->conn_src = ipha->ipha_dst; 241 econnp->conn_rem = ipha->ipha_src; 242 } else { 243 econnp->conn_srcv6 = ip6h->ip6_dst; 244 econnp->conn_remv6 = ip6h->ip6_src; 245 } 246 } 247 if (ipsec_conn_cache_policy(econnp, ipvers == IPV4_VERSION) != 0) { 248 sctp_close_eager(eager); 249 BUMP_MIB(&sctps->sctps_mib, sctpListenDrop); 250 return (NULL); 251 } 252 253 /* Save for getpeerucred */ 254 cr = msg_getcred(mp, &cpid); 255 256 err = sctp_accept_comm(sctp, eager, mp, ip_hdr_len, iack); 257 if (err) { 258 sctp_close_eager(eager); 259 BUMP_MIB(&sctps->sctps_mib, sctpListenDrop); 260 return (NULL); 261 } 262 263 /* 264 * On a clustered note send this notification to the clustering 265 * subsystem. 266 */ 267 if (cl_sctp_connect != NULL) { 268 uchar_t *slist; 269 uchar_t *flist; 270 size_t fsize; 271 size_t ssize; 272 273 fsize = sizeof (in6_addr_t) * eager->sctp_nfaddrs; 274 ssize = sizeof (in6_addr_t) * eager->sctp_nsaddrs; 275 slist = kmem_alloc(ssize, KM_NOSLEEP); 276 flist = kmem_alloc(fsize, KM_NOSLEEP); 277 if (slist == NULL || flist == NULL) { 278 if (slist != NULL) 279 kmem_free(slist, ssize); 280 if (flist != NULL) 281 kmem_free(flist, fsize); 282 sctp_close_eager(eager); 283 BUMP_MIB(&sctps->sctps_mib, sctpListenDrop); 284 SCTP_KSTAT(sctps, sctp_cl_connect); 285 return (NULL); 286 } 287 /* The clustering module frees these list */ 288 sctp_get_saddr_list(eager, slist, ssize); 289 sctp_get_faddr_list(eager, flist, fsize); 290 (*cl_sctp_connect)(eager->sctp_family, slist, 291 eager->sctp_nsaddrs, eager->sctp_lport, flist, 292 eager->sctp_nfaddrs, eager->sctp_fport, B_FALSE, 293 (cl_sctp_handle_t)eager); 294 } 295 296 /* Connection established, so send up the conn_ind */ 297 if ((eager->sctp_ulpd = sctp->sctp_ulp_newconn(sctp->sctp_ulpd, 298 (sock_lower_handle_t)eager, NULL, cr, cpid, 299 &eager->sctp_upcalls)) == NULL) { 300 sctp_close_eager(eager); 301 BUMP_MIB(&sctps->sctps_mib, sctpListenDrop); 302 return (NULL); 303 } 304 ASSERT(SCTP_IS_DETACHED(eager)); 305 eager->sctp_detached = B_FALSE; 306 bzero(&sopp, sizeof (sopp)); 307 sopp.sopp_flags = SOCKOPT_MAXBLK|SOCKOPT_WROFF; 308 sopp.sopp_maxblk = strmsgsz; 309 if (eager->sctp_family == AF_INET) { 310 sopp.sopp_wroff = sctps->sctps_wroff_xtra + 311 sizeof (sctp_data_hdr_t) + sctp->sctp_hdr_len; 312 } else { 313 sopp.sopp_wroff = sctps->sctps_wroff_xtra + 314 sizeof (sctp_data_hdr_t) + sctp->sctp_hdr6_len; 315 } 316 eager->sctp_ulp_prop(eager->sctp_ulpd, &sopp); 317 return (eager); 318 } 319 320 /* 321 * Connect to a peer - this function inserts the sctp in the 322 * bind and conn fanouts, sends the INIT, and replies to the client 323 * with an OK ack. 324 */ 325 int 326 sctp_connect(sctp_t *sctp, const struct sockaddr *dst, uint32_t addrlen) 327 { 328 sin_t *sin; 329 sin6_t *sin6; 330 in6_addr_t dstaddr; 331 in_port_t dstport; 332 mblk_t *initmp; 333 sctp_tf_t *tbf; 334 sctp_t *lsctp; 335 char buf[INET6_ADDRSTRLEN]; 336 int sleep = sctp->sctp_cansleep ? KM_SLEEP : KM_NOSLEEP; 337 int hdrlen; 338 ip6_rthdr_t *rth; 339 int err; 340 sctp_faddr_t *cur_fp; 341 sctp_stack_t *sctps = sctp->sctp_sctps; 342 struct sock_proto_props sopp; 343 344 /* 345 * Determine packet type based on type of address passed in 346 * the request should contain an IPv4 or IPv6 address. 347 * Make sure that address family matches the type of 348 * family of the the address passed down 349 */ 350 if (addrlen < sizeof (sin_t)) { 351 return (EINVAL); 352 } 353 switch (dst->sa_family) { 354 case AF_INET: 355 sin = (sin_t *)dst; 356 357 /* Check for attempt to connect to non-unicast */ 358 if (CLASSD(sin->sin_addr.s_addr) || 359 (sin->sin_addr.s_addr == INADDR_BROADCAST)) { 360 ip0dbg(("sctp_connect: non-unicast\n")); 361 return (EINVAL); 362 } 363 if (sctp->sctp_connp->conn_ipv6_v6only) 364 return (EAFNOSUPPORT); 365 366 /* convert to v6 mapped */ 367 /* Check for attempt to connect to INADDR_ANY */ 368 if (sin->sin_addr.s_addr == INADDR_ANY) { 369 struct in_addr v4_addr; 370 /* 371 * SunOS 4.x and 4.3 BSD allow an application 372 * to connect a TCP socket to INADDR_ANY. 373 * When they do this, the kernel picks the 374 * address of one interface and uses it 375 * instead. The kernel usually ends up 376 * picking the address of the loopback 377 * interface. This is an undocumented feature. 378 * However, we provide the same thing here 379 * in case any TCP apps that use this feature 380 * are being ported to SCTP... 381 */ 382 v4_addr.s_addr = htonl(INADDR_LOOPBACK); 383 IN6_INADDR_TO_V4MAPPED(&v4_addr, &dstaddr); 384 } else { 385 IN6_INADDR_TO_V4MAPPED(&sin->sin_addr, &dstaddr); 386 } 387 dstport = sin->sin_port; 388 if (sin->sin_family == AF_INET) { 389 hdrlen = sctp->sctp_hdr_len; 390 } else { 391 hdrlen = sctp->sctp_hdr6_len; 392 } 393 break; 394 case AF_INET6: 395 sin6 = (sin6_t *)dst; 396 /* Check for attempt to connect to non-unicast. */ 397 if ((addrlen < sizeof (sin6_t)) || 398 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) { 399 ip0dbg(("sctp_connect: non-unicast\n")); 400 return (EINVAL); 401 } 402 if (sctp->sctp_connp->conn_ipv6_v6only && 403 IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 404 return (EAFNOSUPPORT); 405 } 406 /* check for attempt to connect to unspec */ 407 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 408 dstaddr = ipv6_loopback; 409 } else { 410 dstaddr = sin6->sin6_addr; 411 if (IN6_IS_ADDR_LINKLOCAL(&dstaddr)) 412 sctp->sctp_linklocal = 1; 413 } 414 dstport = sin6->sin6_port; 415 hdrlen = sctp->sctp_hdr6_len; 416 break; 417 default: 418 dprint(1, ("sctp_connect: unknown family %d\n", 419 dst->sa_family)); 420 return (EAFNOSUPPORT); 421 } 422 423 (void) inet_ntop(AF_INET6, &dstaddr, buf, sizeof (buf)); 424 dprint(1, ("sctp_connect: attempting connect to %s...\n", buf)); 425 426 RUN_SCTP(sctp); 427 428 if (sctp->sctp_family != dst->sa_family || 429 (sctp->sctp_connp->conn_state_flags & CONN_CLOSING)) { 430 WAKE_SCTP(sctp); 431 return (EINVAL); 432 } 433 434 switch (sctp->sctp_state) { 435 case SCTPS_IDLE: { 436 struct sockaddr_storage ss; 437 438 /* 439 * We support a quick connect capability here, allowing 440 * clients to transition directly from IDLE to COOKIE_WAIT. 441 * sctp_bindi will pick an unused port, insert the connection 442 * in the bind hash and transition to BOUND state. SCTP 443 * picks and uses what it considers the optimal local address 444 * set (just like specifiying INADDR_ANY to bind()). 445 */ 446 dprint(1, ("sctp_connect: idle, attempting bind...\n")); 447 ASSERT(sctp->sctp_nsaddrs == 0); 448 449 bzero(&ss, sizeof (ss)); 450 ss.ss_family = sctp->sctp_family; 451 WAKE_SCTP(sctp); 452 if ((err = sctp_bind(sctp, (struct sockaddr *)&ss, 453 sizeof (ss))) != 0) { 454 return (err); 455 } 456 RUN_SCTP(sctp); 457 /* FALLTHRU */ 458 } 459 460 case SCTPS_BOUND: 461 ASSERT(sctp->sctp_nsaddrs > 0); 462 463 /* do the connect */ 464 /* XXX check for attempt to connect to self */ 465 sctp->sctp_fport = dstport; 466 467 ASSERT(sctp->sctp_iphc); 468 ASSERT(sctp->sctp_iphc6); 469 470 /* 471 * Don't allow this connection to completely duplicate 472 * an existing connection. 473 * 474 * Ensure that the duplicate check and insertion is atomic. 475 */ 476 sctp_conn_hash_remove(sctp); 477 tbf = &sctps->sctps_conn_fanout[SCTP_CONN_HASH(sctps, 478 sctp->sctp_ports)]; 479 mutex_enter(&tbf->tf_lock); 480 lsctp = sctp_lookup(sctp, &dstaddr, tbf, &sctp->sctp_ports, 481 SCTPS_COOKIE_WAIT); 482 if (lsctp != NULL) { 483 /* found a duplicate connection */ 484 mutex_exit(&tbf->tf_lock); 485 SCTP_REFRELE(lsctp); 486 WAKE_SCTP(sctp); 487 return (EADDRINUSE); 488 } 489 /* 490 * OK; set up the peer addr (this may grow after we get 491 * the INIT ACK from the peer with additional addresses). 492 */ 493 if ((err = sctp_add_faddr(sctp, &dstaddr, sleep, 494 B_FALSE)) != 0) { 495 mutex_exit(&tbf->tf_lock); 496 WAKE_SCTP(sctp); 497 return (err); 498 } 499 cur_fp = sctp->sctp_faddrs; 500 501 /* No valid src addr, return. */ 502 if (cur_fp->state == SCTP_FADDRS_UNREACH) { 503 mutex_exit(&tbf->tf_lock); 504 WAKE_SCTP(sctp); 505 return (EADDRNOTAVAIL); 506 } 507 508 sctp->sctp_primary = cur_fp; 509 sctp->sctp_current = cur_fp; 510 sctp->sctp_mss = cur_fp->sfa_pmss; 511 sctp_conn_hash_insert(tbf, sctp, 1); 512 mutex_exit(&tbf->tf_lock); 513 514 /* initialize composite headers */ 515 if ((err = sctp_set_hdraddrs(sctp)) != 0) { 516 sctp_conn_hash_remove(sctp); 517 WAKE_SCTP(sctp); 518 return (err); 519 } 520 521 /* 522 * Massage a routing header (if present) putting the first hop 523 * in ip6_dst. 524 */ 525 rth = ip_find_rthdr_v6(sctp->sctp_ip6h, 526 (uint8_t *)sctp->sctp_sctph6); 527 if (rth != NULL) { 528 (void) ip_massage_options_v6(sctp->sctp_ip6h, rth, 529 sctps->sctps_netstack); 530 } 531 532 /* 533 * Turn off the don't fragment bit on the (only) faddr, 534 * so that if one of the messages exchanged during the 535 * initialization sequence exceeds the path mtu, it 536 * at least has a chance to get there. SCTP does no 537 * fragmentation of initialization messages. The DF bit 538 * will be turned on again in sctp_send_cookie_echo() 539 * (but the cookie echo will still be sent with the df bit 540 * off). 541 */ 542 cur_fp->df = B_FALSE; 543 544 /* Mark this address as alive */ 545 cur_fp->state = SCTP_FADDRS_ALIVE; 546 547 /* This sctp_t is fully bound now. */ 548 sctp->sctp_connp->conn_fully_bound = B_TRUE; 549 550 /* Send the INIT to the peer */ 551 SCTP_FADDR_TIMER_RESTART(sctp, cur_fp, cur_fp->rto); 552 sctp->sctp_state = SCTPS_COOKIE_WAIT; 553 /* 554 * sctp_init_mp() could result in modifying the source 555 * address list, so take the hash lock. 556 */ 557 mutex_enter(&tbf->tf_lock); 558 initmp = sctp_init_mp(sctp); 559 if (initmp == NULL) { 560 mutex_exit(&tbf->tf_lock); 561 /* 562 * It may happen that all the source addresses 563 * (loopback/link local) are removed. In that case, 564 * faile the connect. 565 */ 566 if (sctp->sctp_nsaddrs == 0) { 567 sctp_conn_hash_remove(sctp); 568 SCTP_FADDR_TIMER_STOP(cur_fp); 569 WAKE_SCTP(sctp); 570 return (EADDRNOTAVAIL); 571 } 572 573 /* Otherwise, let the retransmission timer retry */ 574 WAKE_SCTP(sctp); 575 goto notify_ulp; 576 } 577 mutex_exit(&tbf->tf_lock); 578 579 /* 580 * On a clustered note send this notification to the clustering 581 * subsystem. 582 */ 583 if (cl_sctp_connect != NULL) { 584 uchar_t *slist; 585 uchar_t *flist; 586 size_t ssize; 587 size_t fsize; 588 589 fsize = sizeof (in6_addr_t) * sctp->sctp_nfaddrs; 590 ssize = sizeof (in6_addr_t) * sctp->sctp_nsaddrs; 591 slist = kmem_alloc(ssize, KM_SLEEP); 592 flist = kmem_alloc(fsize, KM_SLEEP); 593 /* The clustering module frees the lists */ 594 sctp_get_saddr_list(sctp, slist, ssize); 595 sctp_get_faddr_list(sctp, flist, fsize); 596 (*cl_sctp_connect)(sctp->sctp_family, slist, 597 sctp->sctp_nsaddrs, sctp->sctp_lport, 598 flist, sctp->sctp_nfaddrs, sctp->sctp_fport, 599 B_TRUE, (cl_sctp_handle_t)sctp); 600 } 601 WAKE_SCTP(sctp); 602 /* OK to call IP_PUT() here instead of sctp_add_sendq(). */ 603 CONN_INC_REF(sctp->sctp_connp); 604 initmp->b_flag |= MSGHASREF; 605 IP_PUT(initmp, sctp->sctp_connp, sctp->sctp_current->isv4); 606 BUMP_LOCAL(sctp->sctp_opkts); 607 608 notify_ulp: 609 bzero(&sopp, sizeof (sopp)); 610 sopp.sopp_flags = SOCKOPT_WROFF; 611 sopp.sopp_wroff = sctps->sctps_wroff_xtra + hdrlen + 612 sizeof (sctp_data_hdr_t); 613 sctp->sctp_ulp_prop(sctp->sctp_ulpd, &sopp); 614 615 return (0); 616 default: 617 ip0dbg(("sctp_connect: invalid state. %d\n", sctp->sctp_state)); 618 WAKE_SCTP(sctp); 619 return (EINVAL); 620 } 621 } 622