2 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
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5 * modification, are permitted provided that the following conditions are met:
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31 /* $KAME: sctp_pcb.c,v 1.38 2005/03/06 16:04:18 itojun Exp $ */
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #include <netinet/sctp_os.h>
38 #include <netinet/sctp_var.h>
39 #include <netinet/sctp_sysctl.h>
40 #include <netinet/sctp_pcb.h>
41 #include <netinet/sctputil.h>
42 #include <netinet/sctp.h>
43 #include <netinet/sctp_header.h>
44 #include <netinet/sctp_asconf.h>
45 #include <netinet/sctp_output.h>
46 #include <netinet/sctp_timer.h>
47 #include <netinet/sctp_bsd_addr.h>
48 #include <netinet/sctp_dtrace_define.h>
49 #include <netinet/udp.h>
52 VNET_DEFINE(struct sctp_base_info, system_base_info);
54 /* FIX: we don't handle multiple link local scopes */
55 /* "scopeless" replacement IN6_ARE_ADDR_EQUAL */
58 SCTP6_ARE_ADDR_EQUAL(struct sockaddr_in6 *a, struct sockaddr_in6 *b)
60 struct sockaddr_in6 tmp_a, tmp_b;
62 memcpy(&tmp_a, a, sizeof(struct sockaddr_in6));
63 if (sa6_embedscope(&tmp_a, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
66 memcpy(&tmp_b, b, sizeof(struct sockaddr_in6));
67 if (sa6_embedscope(&tmp_b, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
70 return (IN6_ARE_ADDR_EQUAL(&tmp_a.sin6_addr, &tmp_b.sin6_addr));
76 sctp_fill_pcbinfo(struct sctp_pcbinfo *spcb)
79 * We really don't need to lock this, but I will just because it
82 SCTP_INP_INFO_RLOCK();
83 spcb->ep_count = SCTP_BASE_INFO(ipi_count_ep);
84 spcb->asoc_count = SCTP_BASE_INFO(ipi_count_asoc);
85 spcb->laddr_count = SCTP_BASE_INFO(ipi_count_laddr);
86 spcb->raddr_count = SCTP_BASE_INFO(ipi_count_raddr);
87 spcb->chk_count = SCTP_BASE_INFO(ipi_count_chunk);
88 spcb->readq_count = SCTP_BASE_INFO(ipi_count_readq);
89 spcb->stream_oque = SCTP_BASE_INFO(ipi_count_strmoq);
90 spcb->free_chunks = SCTP_BASE_INFO(ipi_free_chunks);
92 SCTP_INP_INFO_RUNLOCK();
96 * Addresses are added to VRF's (Virtual Router's). For BSD we
97 * have only the default VRF 0. We maintain a hash list of
98 * VRF's. Each VRF has its own list of sctp_ifn's. Each of
99 * these has a list of addresses. When we add a new address
100 * to a VRF we lookup the ifn/ifn_index, if the ifn does
101 * not exist we create it and add it to the list of IFN's
102 * within the VRF. Once we have the sctp_ifn, we add the
103 * address to the list. So we look something like:
106 * vrf-> ifn-> ifn -> ifn
108 * ... +--ifa-> ifa -> ifa
111 * We keep these separate lists since the SCTP subsystem will
112 * point to these from its source address selection nets structure.
113 * When an address is deleted it does not happen right away on
114 * the SCTP side, it gets scheduled. What we do when a
115 * delete happens is immediately remove the address from
116 * the master list and decrement the refcount. As our
117 * addip iterator works through and frees the src address
118 * selection pointing to the sctp_ifa, eventually the refcount
119 * will reach 0 and we will delete it. Note that it is assumed
120 * that any locking on system level ifn/ifa is done at the
121 * caller of these functions and these routines will only
122 * lock the SCTP structures as they add or delete things.
124 * Other notes on VRF concepts.
125 * - An endpoint can be in multiple VRF's
126 * - An association lives within a VRF and only one VRF.
127 * - Any incoming packet we can deduce the VRF for by
128 * looking at the mbuf/pak inbound (for BSD its VRF=0 :D)
129 * - Any downward send call or connect call must supply the
130 * VRF via ancillary data or via some sort of set default
131 * VRF socket option call (again for BSD no brainer since
132 * the VRF is always 0).
133 * - An endpoint may add multiple VRF's to it.
134 * - Listening sockets can accept associations in any
135 * of the VRF's they are in but the assoc will end up
136 * in only one VRF (gotten from the packet or connect/send).
141 sctp_allocate_vrf(int vrf_id)
143 struct sctp_vrf *vrf = NULL;
144 struct sctp_vrflist *bucket;
146 /* First allocate the VRF structure */
147 vrf = sctp_find_vrf(vrf_id);
149 /* Already allocated */
152 SCTP_MALLOC(vrf, struct sctp_vrf *, sizeof(struct sctp_vrf),
157 panic("No memory for VRF:%d", vrf_id);
162 memset(vrf, 0, sizeof(struct sctp_vrf));
163 vrf->vrf_id = vrf_id;
164 LIST_INIT(&vrf->ifnlist);
165 vrf->total_ifa_count = 0;
167 /* now also setup table ids */
168 SCTP_INIT_VRF_TABLEID(vrf);
169 /* Init the HASH of addresses */
170 vrf->vrf_addr_hash = SCTP_HASH_INIT(SCTP_VRF_ADDR_HASH_SIZE,
171 &vrf->vrf_addr_hashmark);
172 if (vrf->vrf_addr_hash == NULL) {
175 panic("No memory for VRF:%d", vrf_id);
177 SCTP_FREE(vrf, SCTP_M_VRF);
180 /* Add it to the hash table */
181 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
182 LIST_INSERT_HEAD(bucket, vrf, next_vrf);
183 atomic_add_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
189 sctp_find_ifn(void *ifn, uint32_t ifn_index)
191 struct sctp_ifn *sctp_ifnp;
192 struct sctp_ifnlist *hash_ifn_head;
195 * We assume the lock is held for the addresses if that's wrong
196 * problems could occur :-)
198 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
199 LIST_FOREACH(sctp_ifnp, hash_ifn_head, next_bucket) {
200 if (sctp_ifnp->ifn_index == ifn_index) {
203 if (sctp_ifnp->ifn_p && ifn && (sctp_ifnp->ifn_p == ifn)) {
213 sctp_find_vrf(uint32_t vrf_id)
215 struct sctp_vrflist *bucket;
216 struct sctp_vrf *liste;
218 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
219 LIST_FOREACH(liste, bucket, next_vrf) {
220 if (vrf_id == liste->vrf_id) {
228 sctp_free_vrf(struct sctp_vrf *vrf)
230 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&vrf->refcount)) {
231 if (vrf->vrf_addr_hash) {
232 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
233 vrf->vrf_addr_hash = NULL;
235 /* We zero'd the count */
236 LIST_REMOVE(vrf, next_vrf);
237 SCTP_FREE(vrf, SCTP_M_VRF);
238 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
243 sctp_free_ifn(struct sctp_ifn *sctp_ifnp)
245 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifnp->refcount)) {
246 /* We zero'd the count */
247 if (sctp_ifnp->vrf) {
248 sctp_free_vrf(sctp_ifnp->vrf);
250 SCTP_FREE(sctp_ifnp, SCTP_M_IFN);
251 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
256 sctp_update_ifn_mtu(uint32_t ifn_index, uint32_t mtu)
258 struct sctp_ifn *sctp_ifnp;
260 sctp_ifnp = sctp_find_ifn((void *)NULL, ifn_index);
261 if (sctp_ifnp != NULL) {
262 sctp_ifnp->ifn_mtu = mtu;
268 sctp_free_ifa(struct sctp_ifa *sctp_ifap)
270 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifap->refcount)) {
271 /* We zero'd the count */
272 if (sctp_ifap->ifn_p) {
273 sctp_free_ifn(sctp_ifap->ifn_p);
275 SCTP_FREE(sctp_ifap, SCTP_M_IFA);
276 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
281 sctp_delete_ifn(struct sctp_ifn *sctp_ifnp, int hold_addr_lock)
283 struct sctp_ifn *found;
285 found = sctp_find_ifn(sctp_ifnp->ifn_p, sctp_ifnp->ifn_index);
287 /* Not in the list.. sorry */
290 if (hold_addr_lock == 0)
291 SCTP_IPI_ADDR_WLOCK();
292 LIST_REMOVE(sctp_ifnp, next_bucket);
293 LIST_REMOVE(sctp_ifnp, next_ifn);
294 SCTP_DEREGISTER_INTERFACE(sctp_ifnp->ifn_index,
295 sctp_ifnp->registered_af);
296 if (hold_addr_lock == 0)
297 SCTP_IPI_ADDR_WUNLOCK();
298 /* Take away the reference, and possibly free it */
299 sctp_free_ifn(sctp_ifnp);
303 sctp_mark_ifa_addr_down(uint32_t vrf_id, struct sockaddr *addr,
304 const char *if_name, uint32_t ifn_index)
306 struct sctp_vrf *vrf;
307 struct sctp_ifa *sctp_ifap = NULL;
309 SCTP_IPI_ADDR_RLOCK();
310 vrf = sctp_find_vrf(vrf_id);
312 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
316 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
317 if (sctp_ifap == NULL) {
318 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
321 if (sctp_ifap->ifn_p == NULL) {
322 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unuseable\n");
328 len1 = strlen(if_name);
329 len2 = strlen(sctp_ifap->ifn_p->ifn_name);
331 SCTPDBG(SCTP_DEBUG_PCB4, "IFN of ifa names different length %d vs %d - ignored\n",
335 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, len1) != 0) {
336 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
337 sctp_ifap->ifn_p->ifn_name,
342 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
343 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
344 sctp_ifap->ifn_p->ifn_index, ifn_index);
349 sctp_ifap->localifa_flags &= (~SCTP_ADDR_VALID);
350 sctp_ifap->localifa_flags |= SCTP_ADDR_IFA_UNUSEABLE;
352 SCTP_IPI_ADDR_RUNLOCK();
356 sctp_mark_ifa_addr_up(uint32_t vrf_id, struct sockaddr *addr,
357 const char *if_name, uint32_t ifn_index)
359 struct sctp_vrf *vrf;
360 struct sctp_ifa *sctp_ifap = NULL;
362 SCTP_IPI_ADDR_RLOCK();
363 vrf = sctp_find_vrf(vrf_id);
365 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
369 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
370 if (sctp_ifap == NULL) {
371 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
374 if (sctp_ifap->ifn_p == NULL) {
375 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unuseable\n");
381 len1 = strlen(if_name);
382 len2 = strlen(sctp_ifap->ifn_p->ifn_name);
384 SCTPDBG(SCTP_DEBUG_PCB4, "IFN of ifa names different length %d vs %d - ignored\n",
388 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, len1) != 0) {
389 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
390 sctp_ifap->ifn_p->ifn_name,
395 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
396 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
397 sctp_ifap->ifn_p->ifn_index, ifn_index);
402 sctp_ifap->localifa_flags &= (~SCTP_ADDR_IFA_UNUSEABLE);
403 sctp_ifap->localifa_flags |= SCTP_ADDR_VALID;
405 SCTP_IPI_ADDR_RUNLOCK();
409 * Add an ifa to an ifn.
410 * Register the interface as necessary.
411 * NOTE: ADDR write lock MUST be held.
414 sctp_add_ifa_to_ifn(struct sctp_ifn *sctp_ifnp, struct sctp_ifa *sctp_ifap)
418 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
419 sctp_ifap->ifn_p = sctp_ifnp;
420 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
421 /* update address counts */
422 sctp_ifnp->ifa_count++;
423 ifa_af = sctp_ifap->address.sa.sa_family;
424 if (ifa_af == AF_INET)
428 if (sctp_ifnp->ifa_count == 1) {
429 /* register the new interface */
430 SCTP_REGISTER_INTERFACE(sctp_ifnp->ifn_index, ifa_af);
431 sctp_ifnp->registered_af = ifa_af;
436 * Remove an ifa from its ifn.
437 * If no more addresses exist, remove the ifn too. Otherwise, re-register
438 * the interface based on the remaining address families left.
439 * NOTE: ADDR write lock MUST be held.
442 sctp_remove_ifa_from_ifn(struct sctp_ifa *sctp_ifap)
446 LIST_REMOVE(sctp_ifap, next_ifa);
447 if (sctp_ifap->ifn_p) {
448 /* update address counts */
449 sctp_ifap->ifn_p->ifa_count--;
450 if (sctp_ifap->address.sa.sa_family == AF_INET6)
451 sctp_ifap->ifn_p->num_v6--;
452 else if (sctp_ifap->address.sa.sa_family == AF_INET)
453 sctp_ifap->ifn_p->num_v4--;
455 ifn_index = sctp_ifap->ifn_p->ifn_index;
456 if (LIST_EMPTY(&sctp_ifap->ifn_p->ifalist)) {
457 /* remove the ifn, possibly freeing it */
458 sctp_delete_ifn(sctp_ifap->ifn_p, SCTP_ADDR_LOCKED);
460 /* re-register address family type, if needed */
461 if ((sctp_ifap->ifn_p->num_v6 == 0) &&
462 (sctp_ifap->ifn_p->registered_af == AF_INET6)) {
463 SCTP_DEREGISTER_INTERFACE(ifn_index, AF_INET6);
464 SCTP_REGISTER_INTERFACE(ifn_index, AF_INET);
465 sctp_ifap->ifn_p->registered_af = AF_INET;
466 } else if ((sctp_ifap->ifn_p->num_v4 == 0) &&
467 (sctp_ifap->ifn_p->registered_af == AF_INET)) {
468 SCTP_DEREGISTER_INTERFACE(ifn_index, AF_INET);
469 SCTP_REGISTER_INTERFACE(ifn_index, AF_INET6);
470 sctp_ifap->ifn_p->registered_af = AF_INET6;
472 /* free the ifn refcount */
473 sctp_free_ifn(sctp_ifap->ifn_p);
475 sctp_ifap->ifn_p = NULL;
480 sctp_add_addr_to_vrf(uint32_t vrf_id, void *ifn, uint32_t ifn_index,
481 uint32_t ifn_type, const char *if_name, void *ifa,
482 struct sockaddr *addr, uint32_t ifa_flags,
485 struct sctp_vrf *vrf;
486 struct sctp_ifn *sctp_ifnp = NULL;
487 struct sctp_ifa *sctp_ifap = NULL;
488 struct sctp_ifalist *hash_addr_head;
489 struct sctp_ifnlist *hash_ifn_head;
490 uint32_t hash_of_addr;
494 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: adding address: ", vrf_id);
495 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
497 SCTP_IPI_ADDR_WLOCK();
498 sctp_ifnp = sctp_find_ifn(ifn, ifn_index);
500 vrf = sctp_ifnp->vrf;
502 vrf = sctp_find_vrf(vrf_id);
504 vrf = sctp_allocate_vrf(vrf_id);
506 SCTP_IPI_ADDR_WUNLOCK();
511 if (sctp_ifnp == NULL) {
513 * build one and add it, can't hold lock until after malloc
516 SCTP_IPI_ADDR_WUNLOCK();
517 SCTP_MALLOC(sctp_ifnp, struct sctp_ifn *,
518 sizeof(struct sctp_ifn), SCTP_M_IFN);
519 if (sctp_ifnp == NULL) {
521 panic("No memory for IFN");
525 memset(sctp_ifnp, 0, sizeof(struct sctp_ifn));
526 sctp_ifnp->ifn_index = ifn_index;
527 sctp_ifnp->ifn_p = ifn;
528 sctp_ifnp->ifn_type = ifn_type;
529 sctp_ifnp->refcount = 0;
530 sctp_ifnp->vrf = vrf;
531 atomic_add_int(&vrf->refcount, 1);
532 sctp_ifnp->ifn_mtu = SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index, addr->sa_family);
533 if (if_name != NULL) {
534 memcpy(sctp_ifnp->ifn_name, if_name, SCTP_IFNAMSIZ);
536 memcpy(sctp_ifnp->ifn_name, "unknown", min(7, SCTP_IFNAMSIZ));
538 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
539 LIST_INIT(&sctp_ifnp->ifalist);
540 SCTP_IPI_ADDR_WLOCK();
541 LIST_INSERT_HEAD(hash_ifn_head, sctp_ifnp, next_bucket);
542 LIST_INSERT_HEAD(&vrf->ifnlist, sctp_ifnp, next_ifn);
543 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
546 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
548 /* Hmm, it already exists? */
549 if ((sctp_ifap->ifn_p) &&
550 (sctp_ifap->ifn_p->ifn_index == ifn_index)) {
551 SCTPDBG(SCTP_DEBUG_PCB4, "Using existing ifn %s (0x%x) for ifa %p\n",
552 sctp_ifap->ifn_p->ifn_name, ifn_index,
555 /* Remove the created one that we don't want */
556 sctp_delete_ifn(sctp_ifnp, SCTP_ADDR_LOCKED);
558 if (sctp_ifap->localifa_flags & SCTP_BEING_DELETED) {
559 /* easy to solve, just switch back to active */
560 SCTPDBG(SCTP_DEBUG_PCB4, "Clearing deleted ifa flag\n");
561 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
562 sctp_ifap->ifn_p = sctp_ifnp;
563 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
566 SCTP_IPI_ADDR_WUNLOCK();
569 if (sctp_ifap->ifn_p) {
571 * The last IFN gets the address, remove the
574 SCTPDBG(SCTP_DEBUG_PCB4, "Moving ifa %p from %s (0x%x) to %s (0x%x)\n",
575 sctp_ifap, sctp_ifap->ifn_p->ifn_name,
576 sctp_ifap->ifn_p->ifn_index, if_name,
578 /* remove the address from the old ifn */
579 sctp_remove_ifa_from_ifn(sctp_ifap);
580 /* move the address over to the new ifn */
581 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
582 goto exit_stage_left;
584 /* repair ifnp which was NULL ? */
585 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
586 SCTPDBG(SCTP_DEBUG_PCB4, "Repairing ifn %p for ifa %p\n",
587 sctp_ifnp, sctp_ifap);
588 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
590 goto exit_stage_left;
593 SCTP_IPI_ADDR_WUNLOCK();
594 SCTP_MALLOC(sctp_ifap, struct sctp_ifa *, sizeof(struct sctp_ifa), SCTP_M_IFA);
595 if (sctp_ifap == NULL) {
597 panic("No memory for IFA");
601 memset(sctp_ifap, 0, sizeof(struct sctp_ifa));
602 sctp_ifap->ifn_p = sctp_ifnp;
603 atomic_add_int(&sctp_ifnp->refcount, 1);
604 sctp_ifap->vrf_id = vrf_id;
605 sctp_ifap->ifa = ifa;
606 memcpy(&sctp_ifap->address, addr, addr->sa_len);
607 sctp_ifap->localifa_flags = SCTP_ADDR_VALID | SCTP_ADDR_DEFER_USE;
608 sctp_ifap->flags = ifa_flags;
610 switch (sctp_ifap->address.sa.sa_family) {
613 struct sockaddr_in *sin;
615 sin = (struct sockaddr_in *)&sctp_ifap->address.sin;
616 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
617 (IN4_ISLOOPBACK_ADDRESS(&sin->sin_addr))) {
618 sctp_ifap->src_is_loop = 1;
620 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
621 sctp_ifap->src_is_priv = 1;
625 new_ifn_af = AF_INET;
631 /* ok to use deprecated addresses? */
632 struct sockaddr_in6 *sin6;
634 sin6 = (struct sockaddr_in6 *)&sctp_ifap->address.sin6;
635 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
636 (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))) {
637 sctp_ifap->src_is_loop = 1;
639 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
640 sctp_ifap->src_is_priv = 1;
644 new_ifn_af = AF_INET6;
652 hash_of_addr = sctp_get_ifa_hash_val(&sctp_ifap->address.sa);
654 if ((sctp_ifap->src_is_priv == 0) &&
655 (sctp_ifap->src_is_loop == 0)) {
656 sctp_ifap->src_is_glob = 1;
658 SCTP_IPI_ADDR_WLOCK();
659 hash_addr_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
660 LIST_INSERT_HEAD(hash_addr_head, sctp_ifap, next_bucket);
661 sctp_ifap->refcount = 1;
662 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
663 sctp_ifnp->ifa_count++;
664 vrf->total_ifa_count++;
665 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
667 SCTP_REGISTER_INTERFACE(ifn_index, new_ifn_af);
668 sctp_ifnp->registered_af = new_ifn_af;
670 SCTP_IPI_ADDR_WUNLOCK();
673 * Bump up the refcount so that when the timer completes it
674 * will drop back down.
676 struct sctp_laddr *wi;
678 atomic_add_int(&sctp_ifap->refcount, 1);
679 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
682 * Gak, what can we do? We have lost an address
683 * change can you say HOSED?
685 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
686 /* Opps, must decrement the count */
687 sctp_del_addr_from_vrf(vrf_id, addr, ifn_index,
691 SCTP_INCR_LADDR_COUNT();
692 bzero(wi, sizeof(*wi));
693 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
695 wi->action = SCTP_ADD_IP_ADDRESS;
698 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
699 SCTP_WQ_ADDR_UNLOCK();
701 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
702 (struct sctp_inpcb *)NULL,
703 (struct sctp_tcb *)NULL,
704 (struct sctp_nets *)NULL);
706 /* it's ready for use */
707 sctp_ifap->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
713 sctp_del_addr_from_vrf(uint32_t vrf_id, struct sockaddr *addr,
714 uint32_t ifn_index, const char *if_name)
716 struct sctp_vrf *vrf;
717 struct sctp_ifa *sctp_ifap = NULL;
719 SCTP_IPI_ADDR_WLOCK();
720 vrf = sctp_find_vrf(vrf_id);
722 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
726 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: deleting address:", vrf_id);
727 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
729 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
731 /* Validate the delete */
732 if (sctp_ifap->ifn_p) {
736 * The name has priority over the ifn_index
737 * if its given. We do this especially for
738 * panda who might recycle indexes fast.
743 len1 = min(SCTP_IFNAMSIZ, strlen(if_name));
744 len2 = min(SCTP_IFNAMSIZ, strlen(sctp_ifap->ifn_p->ifn_name));
745 if (len1 && len2 && (len1 == len2)) {
746 /* we can compare them */
747 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, len1) == 0) {
749 * They match its a correct
757 /* last ditch check ifn_index */
758 if (ifn_index == sctp_ifap->ifn_p->ifn_index) {
763 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s does not match addresses\n",
764 ifn_index, ((if_name == NULL) ? "NULL" : if_name));
765 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s - ignoring delete\n",
766 sctp_ifap->ifn_p->ifn_index, sctp_ifap->ifn_p->ifn_name);
767 SCTP_IPI_ADDR_WUNLOCK();
771 SCTPDBG(SCTP_DEBUG_PCB4, "Deleting ifa %p\n", sctp_ifap);
772 sctp_ifap->localifa_flags &= SCTP_ADDR_VALID;
773 sctp_ifap->localifa_flags |= SCTP_BEING_DELETED;
774 vrf->total_ifa_count--;
775 LIST_REMOVE(sctp_ifap, next_bucket);
776 sctp_remove_ifa_from_ifn(sctp_ifap);
780 SCTPDBG(SCTP_DEBUG_PCB4, "Del Addr-ifn:%d Could not find address:",
782 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
787 SCTP_IPI_ADDR_WUNLOCK();
789 struct sctp_laddr *wi;
791 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
794 * Gak, what can we do? We have lost an address
795 * change can you say HOSED?
797 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
799 /* Oops, must decrement the count */
800 sctp_free_ifa(sctp_ifap);
803 SCTP_INCR_LADDR_COUNT();
804 bzero(wi, sizeof(*wi));
805 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
807 wi->action = SCTP_DEL_IP_ADDRESS;
810 * Should this really be a tailq? As it is we will process
811 * the newest first :-0
813 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
814 SCTP_WQ_ADDR_UNLOCK();
816 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
817 (struct sctp_inpcb *)NULL,
818 (struct sctp_tcb *)NULL,
819 (struct sctp_nets *)NULL);
825 static struct sctp_tcb *
826 sctp_tcb_special_locate(struct sctp_inpcb **inp_p, struct sockaddr *from,
827 struct sockaddr *to, struct sctp_nets **netp, uint32_t vrf_id)
829 /**** ASSUMES THE CALLER holds the INP_INFO_RLOCK */
831 * If we support the TCP model, then we must now dig through to see
832 * if we can find our endpoint in the list of tcp ep's.
834 uint16_t lport, rport;
835 struct sctppcbhead *ephead;
836 struct sctp_inpcb *inp;
837 struct sctp_laddr *laddr;
838 struct sctp_tcb *stcb;
839 struct sctp_nets *net;
841 if ((to == NULL) || (from == NULL)) {
844 if (to->sa_family == AF_INET && from->sa_family == AF_INET) {
845 lport = ((struct sockaddr_in *)to)->sin_port;
846 rport = ((struct sockaddr_in *)from)->sin_port;
847 } else if (to->sa_family == AF_INET6 && from->sa_family == AF_INET6) {
848 lport = ((struct sockaddr_in6 *)to)->sin6_port;
849 rport = ((struct sockaddr_in6 *)from)->sin6_port;
853 ephead = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
855 * Ok now for each of the guys in this bucket we must look and see:
856 * - Does the remote port match. - Does there single association's
857 * addresses match this address (to). If so we update p_ep to point
858 * to this ep and return the tcb from it.
860 LIST_FOREACH(inp, ephead, sctp_hash) {
862 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
863 SCTP_INP_RUNLOCK(inp);
866 if (lport != inp->sctp_lport) {
867 SCTP_INP_RUNLOCK(inp);
870 if (inp->def_vrf_id != vrf_id) {
871 SCTP_INP_RUNLOCK(inp);
874 /* check to see if the ep has one of the addresses */
875 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
876 /* We are NOT bound all, so look further */
879 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
881 if (laddr->ifa == NULL) {
882 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n", __FUNCTION__);
885 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
886 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
889 if (laddr->ifa->address.sa.sa_family ==
891 /* see if it matches */
892 struct sockaddr_in *intf_addr, *sin;
894 intf_addr = &laddr->ifa->address.sin;
895 sin = (struct sockaddr_in *)to;
896 if (from->sa_family == AF_INET) {
897 if (sin->sin_addr.s_addr ==
898 intf_addr->sin_addr.s_addr) {
904 if (from->sa_family == AF_INET6) {
905 struct sockaddr_in6 *intf_addr6;
906 struct sockaddr_in6 *sin6;
908 sin6 = (struct sockaddr_in6 *)
910 intf_addr6 = &laddr->ifa->address.sin6;
912 if (SCTP6_ARE_ADDR_EQUAL(sin6,
922 /* This endpoint does not have this address */
923 SCTP_INP_RUNLOCK(inp);
928 * Ok if we hit here the ep has the address, does it hold
932 stcb = LIST_FIRST(&inp->sctp_asoc_list);
934 SCTP_INP_RUNLOCK(inp);
938 if (stcb->rport != rport) {
939 /* remote port does not match. */
940 SCTP_TCB_UNLOCK(stcb);
941 SCTP_INP_RUNLOCK(inp);
944 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
945 SCTP_TCB_UNLOCK(stcb);
946 SCTP_INP_RUNLOCK(inp);
949 /* Does this TCB have a matching address? */
950 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
952 if (net->ro._l_addr.sa.sa_family != from->sa_family) {
953 /* not the same family, can't be a match */
956 switch (from->sa_family) {
959 struct sockaddr_in *sin, *rsin;
961 sin = (struct sockaddr_in *)&net->ro._l_addr;
962 rsin = (struct sockaddr_in *)from;
963 if (sin->sin_addr.s_addr ==
964 rsin->sin_addr.s_addr) {
970 * Update the endpoint
974 SCTP_INP_RUNLOCK(inp);
982 struct sockaddr_in6 *sin6, *rsin6;
984 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
985 rsin6 = (struct sockaddr_in6 *)from;
986 if (SCTP6_ARE_ADDR_EQUAL(sin6,
993 * Update the endpoint
997 SCTP_INP_RUNLOCK(inp);
1008 SCTP_TCB_UNLOCK(stcb);
1009 SCTP_INP_RUNLOCK(inp);
1015 sctp_does_stcb_own_this_addr(struct sctp_tcb *stcb, struct sockaddr *to)
1017 int loopback_scope, ipv4_local_scope, local_scope, site_scope;
1018 int ipv4_addr_legal, ipv6_addr_legal;
1019 struct sctp_vrf *vrf;
1020 struct sctp_ifn *sctp_ifn;
1021 struct sctp_ifa *sctp_ifa;
1023 loopback_scope = stcb->asoc.loopback_scope;
1024 ipv4_local_scope = stcb->asoc.ipv4_local_scope;
1025 local_scope = stcb->asoc.local_scope;
1026 site_scope = stcb->asoc.site_scope;
1027 ipv4_addr_legal = ipv6_addr_legal = 0;
1028 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1029 ipv6_addr_legal = 1;
1030 if (SCTP_IPV6_V6ONLY(stcb->sctp_ep) == 0) {
1031 ipv4_addr_legal = 1;
1034 ipv4_addr_legal = 1;
1037 SCTP_IPI_ADDR_RLOCK();
1038 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
1040 /* no vrf, no addresses */
1041 SCTP_IPI_ADDR_RUNLOCK();
1044 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
1045 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
1046 if ((loopback_scope == 0) &&
1047 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
1050 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
1051 if (sctp_is_addr_restricted(stcb, sctp_ifa))
1053 switch (sctp_ifa->address.sa.sa_family) {
1056 if (ipv4_addr_legal) {
1057 struct sockaddr_in *sin,
1060 sin = &sctp_ifa->address.sin;
1061 rsin = (struct sockaddr_in *)to;
1062 if ((ipv4_local_scope == 0) &&
1063 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
1066 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
1067 SCTP_IPI_ADDR_RUNLOCK();
1075 if (ipv6_addr_legal) {
1076 struct sockaddr_in6 *sin6,
1079 sin6 = &sctp_ifa->address.sin6;
1080 rsin6 = (struct sockaddr_in6 *)to;
1081 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
1082 if (local_scope == 0)
1084 if (sin6->sin6_scope_id == 0) {
1085 if (sa6_recoverscope(sin6) != 0)
1089 if ((site_scope == 0) &&
1090 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
1093 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
1094 SCTP_IPI_ADDR_RUNLOCK();
1107 struct sctp_laddr *laddr;
1109 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
1110 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
1113 if (laddr->ifa->address.sa.sa_family != to->sa_family) {
1116 switch (to->sa_family) {
1120 struct sockaddr_in *sin, *rsin;
1122 sin = (struct sockaddr_in *)&laddr->ifa->address.sin;
1123 rsin = (struct sockaddr_in *)to;
1124 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
1125 SCTP_IPI_ADDR_RUNLOCK();
1134 struct sockaddr_in6 *sin6, *rsin6;
1136 sin6 = (struct sockaddr_in6 *)&laddr->ifa->address.sin6;
1137 rsin6 = (struct sockaddr_in6 *)to;
1138 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
1139 SCTP_IPI_ADDR_RUNLOCK();
1153 SCTP_IPI_ADDR_RUNLOCK();
1160 * 1) If I return a NULL you must decrement any INP ref cnt. 2) If I find an
1161 * stcb, both will be locked (locked_tcb and stcb) but decrement will be done
1162 * (if locked == NULL). 3) Decrement happens on return ONLY if locked ==
1167 sctp_findassociation_ep_addr(struct sctp_inpcb **inp_p, struct sockaddr *remote,
1168 struct sctp_nets **netp, struct sockaddr *local, struct sctp_tcb *locked_tcb)
1170 struct sctpasochead *head;
1171 struct sctp_inpcb *inp;
1172 struct sctp_tcb *stcb = NULL;
1173 struct sctp_nets *net;
1177 if (remote->sa_family == AF_INET) {
1178 rport = (((struct sockaddr_in *)remote)->sin_port);
1179 } else if (remote->sa_family == AF_INET6) {
1180 rport = (((struct sockaddr_in6 *)remote)->sin6_port);
1186 * UN-lock so we can do proper locking here this occurs when
1187 * called from load_addresses_from_init.
1189 atomic_add_int(&locked_tcb->asoc.refcnt, 1);
1190 SCTP_TCB_UNLOCK(locked_tcb);
1192 SCTP_INP_INFO_RLOCK();
1193 if (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) {
1195 * Now either this guy is our listener or it's the
1196 * connector. If it is the one that issued the connect, then
1197 * it's only chance is to be the first TCB in the list. If
1198 * it is the acceptor, then do the special_lookup to hash
1199 * and find the real inp.
1201 if ((inp->sctp_socket) && (inp->sctp_socket->so_qlimit)) {
1202 /* to is peer addr, from is my addr */
1203 stcb = sctp_tcb_special_locate(inp_p, remote, local,
1204 netp, inp->def_vrf_id);
1205 if ((stcb != NULL) && (locked_tcb == NULL)) {
1206 /* we have a locked tcb, lower refcount */
1207 SCTP_INP_DECR_REF(inp);
1209 if ((locked_tcb != NULL) && (locked_tcb != stcb)) {
1210 SCTP_INP_RLOCK(locked_tcb->sctp_ep);
1211 SCTP_TCB_LOCK(locked_tcb);
1212 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1213 SCTP_INP_RUNLOCK(locked_tcb->sctp_ep);
1215 SCTP_INP_INFO_RUNLOCK();
1218 SCTP_INP_WLOCK(inp);
1219 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1222 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1226 SCTP_TCB_LOCK(stcb);
1228 if (stcb->rport != rport) {
1229 /* remote port does not match. */
1230 SCTP_TCB_UNLOCK(stcb);
1233 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1234 SCTP_TCB_UNLOCK(stcb);
1237 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1238 SCTP_TCB_UNLOCK(stcb);
1241 /* now look at the list of remote addresses */
1242 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1244 if (net == (TAILQ_NEXT(net, sctp_next))) {
1245 panic("Corrupt net list");
1248 if (net->ro._l_addr.sa.sa_family !=
1249 remote->sa_family) {
1250 /* not the same family */
1253 switch (remote->sa_family) {
1256 struct sockaddr_in *sin,
1259 sin = (struct sockaddr_in *)
1261 rsin = (struct sockaddr_in *)remote;
1262 if (sin->sin_addr.s_addr ==
1263 rsin->sin_addr.s_addr) {
1268 if (locked_tcb == NULL) {
1269 SCTP_INP_DECR_REF(inp);
1270 } else if (locked_tcb != stcb) {
1271 SCTP_TCB_LOCK(locked_tcb);
1274 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1276 SCTP_INP_WUNLOCK(inp);
1277 SCTP_INP_INFO_RUNLOCK();
1285 struct sockaddr_in6 *sin6,
1288 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1289 rsin6 = (struct sockaddr_in6 *)remote;
1290 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1296 if (locked_tcb == NULL) {
1297 SCTP_INP_DECR_REF(inp);
1298 } else if (locked_tcb != stcb) {
1299 SCTP_TCB_LOCK(locked_tcb);
1302 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1304 SCTP_INP_WUNLOCK(inp);
1305 SCTP_INP_INFO_RUNLOCK();
1316 SCTP_TCB_UNLOCK(stcb);
1319 SCTP_INP_WLOCK(inp);
1320 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1323 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(rport,
1324 inp->sctp_hashmark)];
1328 LIST_FOREACH(stcb, head, sctp_tcbhash) {
1329 if (stcb->rport != rport) {
1330 /* remote port does not match */
1333 SCTP_TCB_LOCK(stcb);
1334 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1335 SCTP_TCB_UNLOCK(stcb);
1338 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1339 SCTP_TCB_UNLOCK(stcb);
1342 /* now look at the list of remote addresses */
1343 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1345 if (net == (TAILQ_NEXT(net, sctp_next))) {
1346 panic("Corrupt net list");
1349 if (net->ro._l_addr.sa.sa_family !=
1350 remote->sa_family) {
1351 /* not the same family */
1354 switch (remote->sa_family) {
1357 struct sockaddr_in *sin,
1360 sin = (struct sockaddr_in *)
1362 rsin = (struct sockaddr_in *)remote;
1363 if (sin->sin_addr.s_addr ==
1364 rsin->sin_addr.s_addr) {
1369 if (locked_tcb == NULL) {
1370 SCTP_INP_DECR_REF(inp);
1371 } else if (locked_tcb != stcb) {
1372 SCTP_TCB_LOCK(locked_tcb);
1375 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1377 SCTP_INP_WUNLOCK(inp);
1378 SCTP_INP_INFO_RUNLOCK();
1386 struct sockaddr_in6 *sin6,
1389 sin6 = (struct sockaddr_in6 *)
1391 rsin6 = (struct sockaddr_in6 *)remote;
1392 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1398 if (locked_tcb == NULL) {
1399 SCTP_INP_DECR_REF(inp);
1400 } else if (locked_tcb != stcb) {
1401 SCTP_TCB_LOCK(locked_tcb);
1404 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1406 SCTP_INP_WUNLOCK(inp);
1407 SCTP_INP_INFO_RUNLOCK();
1418 SCTP_TCB_UNLOCK(stcb);
1422 /* clean up for returning null */
1424 SCTP_TCB_LOCK(locked_tcb);
1425 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1427 SCTP_INP_WUNLOCK(inp);
1428 SCTP_INP_INFO_RUNLOCK();
1434 * Find an association for a specific endpoint using the association id given
1435 * out in the COMM_UP notification
1439 sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1442 * Use my the assoc_id to find a endpoint
1444 struct sctpasochead *head;
1445 struct sctp_tcb *stcb;
1449 SCTP_PRINTF("TSNH ep_associd\n");
1452 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1453 SCTP_PRINTF("TSNH ep_associd0\n");
1456 id = (uint32_t) asoc_id;
1457 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
1459 /* invalid id TSNH */
1460 SCTP_PRINTF("TSNH ep_associd1\n");
1463 LIST_FOREACH(stcb, head, sctp_tcbasocidhash) {
1464 if (stcb->asoc.assoc_id == id) {
1465 if (inp != stcb->sctp_ep) {
1467 * some other guy has the same id active (id
1470 SCTP_PRINTF("TSNH ep_associd2\n");
1473 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1477 SCTP_TCB_LOCK(stcb);
1487 sctp_findassociation_ep_asocid(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1489 struct sctp_tcb *stcb;
1491 SCTP_INP_RLOCK(inp);
1492 stcb = sctp_findasoc_ep_asocid_locked(inp, asoc_id, want_lock);
1493 SCTP_INP_RUNLOCK(inp);
1498 static struct sctp_inpcb *
1499 sctp_endpoint_probe(struct sockaddr *nam, struct sctppcbhead *head,
1500 uint16_t lport, uint32_t vrf_id)
1502 struct sctp_inpcb *inp;
1503 struct sockaddr_in *sin;
1506 struct sockaddr_in6 *sin6;
1509 struct sctp_laddr *laddr;
1512 struct sockaddr_in6 *intf_addr6;
1519 * Endpoint probe expects that the INP_INFO is locked.
1525 switch (nam->sa_family) {
1527 sin = (struct sockaddr_in *)nam;
1531 sin6 = (struct sockaddr_in6 *)nam;
1535 /* unsupported family */
1542 LIST_FOREACH(inp, head, sctp_hash) {
1543 SCTP_INP_RLOCK(inp);
1544 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1545 SCTP_INP_RUNLOCK(inp);
1548 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) &&
1549 (inp->sctp_lport == lport)) {
1551 if ((nam->sa_family == AF_INET) &&
1552 (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1553 SCTP_IPV6_V6ONLY(inp)) {
1554 /* IPv4 on a IPv6 socket with ONLY IPv6 set */
1555 SCTP_INP_RUNLOCK(inp);
1558 /* A V6 address and the endpoint is NOT bound V6 */
1559 if (nam->sa_family == AF_INET6 &&
1560 (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
1561 SCTP_INP_RUNLOCK(inp);
1564 /* does a VRF id match? */
1566 if (inp->def_vrf_id == vrf_id)
1569 SCTP_INP_RUNLOCK(inp);
1574 SCTP_INP_RUNLOCK(inp);
1576 if ((nam->sa_family == AF_INET) &&
1577 (sin->sin_addr.s_addr == INADDR_ANY)) {
1578 /* Can't hunt for one that has no address specified */
1582 if ((nam->sa_family == AF_INET6) &&
1583 (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))) {
1584 /* Can't hunt for one that has no address specified */
1589 * ok, not bound to all so see if we can find a EP bound to this
1592 LIST_FOREACH(inp, head, sctp_hash) {
1593 SCTP_INP_RLOCK(inp);
1594 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1595 SCTP_INP_RUNLOCK(inp);
1598 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) {
1599 SCTP_INP_RUNLOCK(inp);
1603 * Ok this could be a likely candidate, look at all of its
1606 if (inp->sctp_lport != lport) {
1607 SCTP_INP_RUNLOCK(inp);
1610 /* does a VRF id match? */
1612 if (inp->def_vrf_id == vrf_id)
1616 SCTP_INP_RUNLOCK(inp);
1619 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1620 if (laddr->ifa == NULL) {
1621 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
1625 SCTPDBG(SCTP_DEBUG_PCB1, "Ok laddr->ifa:%p is possible, ",
1627 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1628 SCTPDBG(SCTP_DEBUG_PCB1, "Huh IFA being deleted\n");
1631 if (laddr->ifa->address.sa.sa_family == nam->sa_family) {
1632 /* possible, see if it matches */
1633 struct sockaddr_in *intf_addr;
1635 intf_addr = &laddr->ifa->address.sin;
1636 switch (nam->sa_family) {
1638 if (sin->sin_addr.s_addr ==
1639 intf_addr->sin_addr.s_addr) {
1640 SCTP_INP_RUNLOCK(inp);
1646 intf_addr6 = &laddr->ifa->address.sin6;
1647 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1649 SCTP_INP_RUNLOCK(inp);
1657 SCTP_INP_RUNLOCK(inp);
1663 static struct sctp_inpcb *
1664 sctp_isport_inuse(struct sctp_inpcb *inp, uint16_t lport, uint32_t vrf_id)
1666 struct sctppcbhead *head;
1667 struct sctp_inpcb *t_inp;
1670 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1671 SCTP_BASE_INFO(hashmark))];
1672 LIST_FOREACH(t_inp, head, sctp_hash) {
1673 if (t_inp->sctp_lport != lport) {
1676 /* is it in the VRF in question */
1678 if (t_inp->def_vrf_id == vrf_id)
1683 /* This one is in use. */
1684 /* check the v6/v4 binding issue */
1685 if ((t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1686 SCTP_IPV6_V6ONLY(t_inp)) {
1687 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1688 /* collision in V6 space */
1691 /* inp is BOUND_V4 no conflict */
1694 } else if (t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1695 /* t_inp is bound v4 and v6, conflict always */
1698 /* t_inp is bound only V4 */
1699 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1700 SCTP_IPV6_V6ONLY(inp)) {
1704 /* else fall through to conflict */
1713 sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp)
1715 /* For 1-2-1 with port reuse */
1716 struct sctppcbhead *head;
1717 struct sctp_inpcb *tinp;
1719 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
1720 /* only works with port reuse on */
1723 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) {
1726 SCTP_INP_RUNLOCK(inp);
1727 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport,
1728 SCTP_BASE_INFO(hashmark))];
1729 /* Kick out all non-listeners to the TCP hash */
1730 LIST_FOREACH(tinp, head, sctp_hash) {
1731 if (tinp->sctp_lport != inp->sctp_lport) {
1734 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1737 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
1740 if (tinp->sctp_socket->so_qlimit) {
1743 SCTP_INP_WLOCK(tinp);
1744 LIST_REMOVE(tinp, sctp_hash);
1745 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(tinp->sctp_lport, SCTP_BASE_INFO(hashtcpmark))];
1746 tinp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
1747 LIST_INSERT_HEAD(head, tinp, sctp_hash);
1748 SCTP_INP_WUNLOCK(tinp);
1750 SCTP_INP_WLOCK(inp);
1751 /* Pull from where he was */
1752 LIST_REMOVE(inp, sctp_hash);
1753 inp->sctp_flags &= ~SCTP_PCB_FLAGS_IN_TCPPOOL;
1754 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport, SCTP_BASE_INFO(hashmark))];
1755 LIST_INSERT_HEAD(head, inp, sctp_hash);
1756 SCTP_INP_WUNLOCK(inp);
1757 SCTP_INP_RLOCK(inp);
1763 sctp_pcb_findep(struct sockaddr *nam, int find_tcp_pool, int have_lock,
1767 * First we check the hash table to see if someone has this port
1768 * bound with just the port.
1770 struct sctp_inpcb *inp;
1771 struct sctppcbhead *head;
1772 struct sockaddr_in *sin;
1773 struct sockaddr_in6 *sin6;
1777 if (nam->sa_family == AF_INET) {
1778 sin = (struct sockaddr_in *)nam;
1779 lport = ((struct sockaddr_in *)nam)->sin_port;
1780 } else if (nam->sa_family == AF_INET6) {
1781 sin6 = (struct sockaddr_in6 *)nam;
1782 lport = ((struct sockaddr_in6 *)nam)->sin6_port;
1784 /* unsupported family */
1788 * I could cheat here and just cast to one of the types but we will
1789 * do it right. It also provides the check against an Unsupported
1792 /* Find the head of the ALLADDR chain */
1793 if (have_lock == 0) {
1794 SCTP_INP_INFO_RLOCK();
1796 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1797 SCTP_BASE_INFO(hashmark))];
1798 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1801 * If the TCP model exists it could be that the main listening
1802 * endpoint is gone but there still exists a connected socket for
1803 * this guy. If so we can return the first one that we find. This
1804 * may NOT be the correct one so the caller should be wary on the
1805 * returned INP. Currently the only caller that sets find_tcp_pool
1806 * is in bindx where we are verifying that a user CAN bind the
1807 * address. He either has bound it already, or someone else has, or
1808 * its open to bind, so this is good enough.
1810 if (inp == NULL && find_tcp_pool) {
1811 for (i = 0; i < SCTP_BASE_INFO(hashtcpmark) + 1; i++) {
1812 head = &SCTP_BASE_INFO(sctp_tcpephash)[i];
1813 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1820 SCTP_INP_INCR_REF(inp);
1822 if (have_lock == 0) {
1823 SCTP_INP_INFO_RUNLOCK();
1829 * Find an association for an endpoint with the pointer to whom you want to
1830 * send to and the endpoint pointer. The address can be IPv4 or IPv6. We may
1831 * need to change the *to to some other struct like a mbuf...
1834 sctp_findassociation_addr_sa(struct sockaddr *to, struct sockaddr *from,
1835 struct sctp_inpcb **inp_p, struct sctp_nets **netp, int find_tcp_pool,
1838 struct sctp_inpcb *inp = NULL;
1839 struct sctp_tcb *retval;
1841 SCTP_INP_INFO_RLOCK();
1842 if (find_tcp_pool) {
1843 if (inp_p != NULL) {
1844 retval = sctp_tcb_special_locate(inp_p, from, to, netp,
1847 retval = sctp_tcb_special_locate(&inp, from, to, netp,
1850 if (retval != NULL) {
1851 SCTP_INP_INFO_RUNLOCK();
1855 inp = sctp_pcb_findep(to, 0, 1, vrf_id);
1856 if (inp_p != NULL) {
1859 SCTP_INP_INFO_RUNLOCK();
1865 * ok, we have an endpoint, now lets find the assoc for it (if any)
1866 * we now place the source address or from in the to of the find
1867 * endpoint call. Since in reality this chain is used from the
1868 * inbound packet side.
1870 if (inp_p != NULL) {
1871 retval = sctp_findassociation_ep_addr(inp_p, from, netp, to,
1874 retval = sctp_findassociation_ep_addr(&inp, from, netp, to,
1882 * This routine will grub through the mbuf that is a INIT or INIT-ACK and
1883 * find all addresses that the sender has specified in any address list. Each
1884 * address will be used to lookup the TCB and see if one exits.
1886 static struct sctp_tcb *
1887 sctp_findassociation_special_addr(struct mbuf *m, int iphlen, int offset,
1888 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp,
1889 struct sockaddr *dest)
1891 struct sockaddr_in sin4;
1892 struct sockaddr_in6 sin6;
1893 struct sctp_paramhdr *phdr, parm_buf;
1894 struct sctp_tcb *retval;
1895 uint32_t ptype, plen;
1897 memset(&sin4, 0, sizeof(sin4));
1898 memset(&sin6, 0, sizeof(sin6));
1899 sin4.sin_len = sizeof(sin4);
1900 sin4.sin_family = AF_INET;
1901 sin4.sin_port = sh->src_port;
1902 sin6.sin6_len = sizeof(sin6);
1903 sin6.sin6_family = AF_INET6;
1904 sin6.sin6_port = sh->src_port;
1907 offset += sizeof(struct sctp_init_chunk);
1909 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
1910 while (phdr != NULL) {
1911 /* now we must see if we want the parameter */
1912 ptype = ntohs(phdr->param_type);
1913 plen = ntohs(phdr->param_length);
1917 if (ptype == SCTP_IPV4_ADDRESS &&
1918 plen == sizeof(struct sctp_ipv4addr_param)) {
1919 /* Get the rest of the address */
1920 struct sctp_ipv4addr_param ip4_parm, *p4;
1922 phdr = sctp_get_next_param(m, offset,
1923 (struct sctp_paramhdr *)&ip4_parm, min(plen, sizeof(ip4_parm)));
1927 p4 = (struct sctp_ipv4addr_param *)phdr;
1928 memcpy(&sin4.sin_addr, &p4->addr, sizeof(p4->addr));
1930 retval = sctp_findassociation_ep_addr(inp_p,
1931 (struct sockaddr *)&sin4, netp, dest, NULL);
1932 if (retval != NULL) {
1935 } else if (ptype == SCTP_IPV6_ADDRESS &&
1936 plen == sizeof(struct sctp_ipv6addr_param)) {
1937 /* Get the rest of the address */
1938 struct sctp_ipv6addr_param ip6_parm, *p6;
1940 phdr = sctp_get_next_param(m, offset,
1941 (struct sctp_paramhdr *)&ip6_parm, min(plen, sizeof(ip6_parm)));
1945 p6 = (struct sctp_ipv6addr_param *)phdr;
1946 memcpy(&sin6.sin6_addr, &p6->addr, sizeof(p6->addr));
1948 retval = sctp_findassociation_ep_addr(inp_p,
1949 (struct sockaddr *)&sin6, netp, dest, NULL);
1950 if (retval != NULL) {
1954 offset += SCTP_SIZE32(plen);
1955 phdr = sctp_get_next_param(m, offset, &parm_buf,
1961 static struct sctp_tcb *
1962 sctp_findassoc_by_vtag(struct sockaddr *from, struct sockaddr *to, uint32_t vtag,
1963 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint16_t rport,
1964 uint16_t lport, int skip_src_check, uint32_t vrf_id, uint32_t remote_tag)
1967 * Use my vtag to hash. If we find it we then verify the source addr
1968 * is in the assoc. If all goes well we save a bit on rec of a
1971 struct sctpasochead *head;
1972 struct sctp_nets *net;
1973 struct sctp_tcb *stcb;
1977 SCTP_INP_INFO_RLOCK();
1978 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(vtag,
1979 SCTP_BASE_INFO(hashasocmark))];
1982 SCTP_INP_INFO_RUNLOCK();
1985 LIST_FOREACH(stcb, head, sctp_asocs) {
1986 SCTP_INP_RLOCK(stcb->sctp_ep);
1987 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1988 SCTP_INP_RUNLOCK(stcb->sctp_ep);
1991 SCTP_TCB_LOCK(stcb);
1992 SCTP_INP_RUNLOCK(stcb->sctp_ep);
1993 if (stcb->asoc.my_vtag == vtag) {
1995 if (stcb->rport != rport) {
1996 SCTP_TCB_UNLOCK(stcb);
1999 if (stcb->sctp_ep->sctp_lport != lport) {
2000 SCTP_TCB_UNLOCK(stcb);
2003 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
2004 SCTP_TCB_UNLOCK(stcb);
2007 /* RRS:Need toaddr check here */
2008 if (sctp_does_stcb_own_this_addr(stcb, to) == 0) {
2009 /* Endpoint does not own this address */
2010 SCTP_TCB_UNLOCK(stcb);
2015 * If we have both vtags that's all we match
2018 if (stcb->asoc.peer_vtag == remote_tag) {
2020 * If both tags match we consider it
2021 * conclusive and check NO
2022 * source/destination addresses
2027 if (skip_src_check) {
2030 net = sctp_findnet(stcb, from);
2032 *netp = NULL; /* unknown */
2035 *inp_p = stcb->sctp_ep;
2036 SCTP_INP_INFO_RUNLOCK();
2039 net = sctp_findnet(stcb, from);
2043 SCTP_STAT_INCR(sctps_vtagexpress);
2044 *inp_p = stcb->sctp_ep;
2045 SCTP_INP_INFO_RUNLOCK();
2049 * not him, this should only happen in rare
2050 * cases so I peg it.
2052 SCTP_STAT_INCR(sctps_vtagbogus);
2055 SCTP_TCB_UNLOCK(stcb);
2057 SCTP_INP_INFO_RUNLOCK();
2062 * Find an association with the pointer to the inbound IP packet. This can be
2063 * a IPv4 or IPv6 packet.
2066 sctp_findassociation_addr(struct mbuf *m, int iphlen, int offset,
2067 struct sctphdr *sh, struct sctp_chunkhdr *ch,
2068 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2072 struct sctp_tcb *retval;
2073 struct sockaddr_storage to_store, from_store;
2074 struct sockaddr *to = (struct sockaddr *)&to_store;
2075 struct sockaddr *from = (struct sockaddr *)&from_store;
2076 struct sctp_inpcb *inp;
2078 iph = mtod(m, struct ip *);
2079 switch (iph->ip_v) {
2083 struct sockaddr_in *from4;
2085 from4 = (struct sockaddr_in *)&from_store;
2086 bzero(from4, sizeof(*from4));
2087 from4->sin_family = AF_INET;
2088 from4->sin_len = sizeof(struct sockaddr_in);
2089 from4->sin_addr.s_addr = iph->ip_src.s_addr;
2090 from4->sin_port = sh->src_port;
2094 case IPV6_VERSION >> 4:
2097 struct ip6_hdr *ip6;
2098 struct sockaddr_in6 *from6;
2100 ip6 = mtod(m, struct ip6_hdr *);
2101 from6 = (struct sockaddr_in6 *)&from_store;
2102 bzero(from6, sizeof(*from6));
2103 from6->sin6_family = AF_INET6;
2104 from6->sin6_len = sizeof(struct sockaddr_in6);
2105 from6->sin6_addr = ip6->ip6_src;
2106 from6->sin6_port = sh->src_port;
2107 /* Get the scopes in properly to the sin6 addr's */
2108 /* we probably don't need these operations */
2109 (void)sa6_recoverscope(from6);
2110 sa6_embedscope(from6, MODULE_GLOBAL(ip6_use_defzone));
2115 /* Currently not supported. */
2120 switch (iph->ip_v) {
2124 struct sockaddr_in *to4;
2126 to4 = (struct sockaddr_in *)&to_store;
2127 bzero(to4, sizeof(*to4));
2128 to4->sin_family = AF_INET;
2129 to4->sin_len = sizeof(struct sockaddr_in);
2130 to4->sin_addr.s_addr = iph->ip_dst.s_addr;
2131 to4->sin_port = sh->dest_port;
2135 case IPV6_VERSION >> 4:
2138 struct ip6_hdr *ip6;
2139 struct sockaddr_in6 *to6;
2141 ip6 = mtod(m, struct ip6_hdr *);
2142 to6 = (struct sockaddr_in6 *)&to_store;
2143 bzero(to6, sizeof(*to6));
2144 to6->sin6_family = AF_INET6;
2145 to6->sin6_len = sizeof(struct sockaddr_in6);
2146 to6->sin6_addr = ip6->ip6_dst;
2147 to6->sin6_port = sh->dest_port;
2148 /* Get the scopes in properly to the sin6 addr's */
2149 /* we probably don't need these operations */
2150 (void)sa6_recoverscope(to6);
2151 sa6_embedscope(to6, MODULE_GLOBAL(ip6_use_defzone));
2160 /* we only go down this path if vtag is non-zero */
2161 retval = sctp_findassoc_by_vtag(from, to, ntohl(sh->v_tag),
2162 inp_p, netp, sh->src_port, sh->dest_port, 0, vrf_id, 0);
2168 if ((ch->chunk_type != SCTP_INITIATION) &&
2169 (ch->chunk_type != SCTP_INITIATION_ACK) &&
2170 (ch->chunk_type != SCTP_COOKIE_ACK) &&
2171 (ch->chunk_type != SCTP_COOKIE_ECHO)) {
2172 /* Other chunk types go to the tcp pool. */
2176 retval = sctp_findassociation_addr_sa(to, from, inp_p, netp,
2177 find_tcp_pool, vrf_id);
2180 retval = sctp_findassociation_addr_sa(to, from, &inp, netp,
2181 find_tcp_pool, vrf_id);
2183 SCTPDBG(SCTP_DEBUG_PCB1, "retval:%p inp:%p\n", retval, inp);
2184 if (retval == NULL && inp) {
2185 /* Found a EP but not this address */
2186 if ((ch->chunk_type == SCTP_INITIATION) ||
2187 (ch->chunk_type == SCTP_INITIATION_ACK)) {
2189 * special hook, we do NOT return linp or an
2190 * association that is linked to an existing
2191 * association that is under the TCP pool (i.e. no
2192 * listener exists). The endpoint finding routine
2193 * will always find a listener before examining the
2196 if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
2202 retval = sctp_findassociation_special_addr(m, iphlen,
2203 offset, sh, &inp, netp, to);
2204 if (inp_p != NULL) {
2209 SCTPDBG(SCTP_DEBUG_PCB1, "retval is %p\n", retval);
2214 * lookup an association by an ASCONF lookup address.
2215 * if the lookup address is 0.0.0.0 or ::0, use the vtag to do the lookup
2218 sctp_findassociation_ep_asconf(struct mbuf *m, int iphlen, int offset,
2219 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2221 struct sctp_tcb *stcb;
2222 struct sockaddr_in *sin;
2225 struct sockaddr_in6 *sin6;
2228 struct sockaddr_storage local_store, remote_store;
2229 struct sockaddr *to;
2233 struct ip6_hdr *ip6;
2236 struct sctp_paramhdr parm_buf, *phdr;
2238 int zero_address = 0;
2241 memset(&local_store, 0, sizeof(local_store));
2242 memset(&remote_store, 0, sizeof(remote_store));
2243 to = (struct sockaddr *)&local_store;
2244 /* First get the destination address setup too. */
2245 iph = mtod(m, struct ip *);
2246 switch (iph->ip_v) {
2249 sin = (struct sockaddr_in *)&local_store;
2250 sin->sin_family = AF_INET;
2251 sin->sin_len = sizeof(*sin);
2252 sin->sin_port = sh->dest_port;
2253 sin->sin_addr.s_addr = iph->ip_dst.s_addr;
2256 case IPV6_VERSION >> 4:
2258 ip6 = mtod(m, struct ip6_hdr *);
2259 sin6 = (struct sockaddr_in6 *)&local_store;
2260 sin6->sin6_family = AF_INET6;
2261 sin6->sin6_len = sizeof(*sin6);
2262 sin6->sin6_port = sh->dest_port;
2263 sin6->sin6_addr = ip6->ip6_dst;
2270 phdr = sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk),
2271 &parm_buf, sizeof(struct sctp_paramhdr));
2273 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf lookup addr\n",
2277 ptype = (int)((uint32_t) ntohs(phdr->param_type));
2278 /* get the correlation address */
2281 case SCTP_IPV6_ADDRESS:
2283 /* ipv6 address param */
2284 struct sctp_ipv6addr_param *p6, p6_buf;
2286 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv6addr_param)) {
2289 p6 = (struct sctp_ipv6addr_param *)sctp_get_next_param(m,
2290 offset + sizeof(struct sctp_asconf_chunk),
2291 &p6_buf.ph, sizeof(*p6));
2293 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v6 lookup addr\n",
2297 sin6 = (struct sockaddr_in6 *)&remote_store;
2298 sin6->sin6_family = AF_INET6;
2299 sin6->sin6_len = sizeof(*sin6);
2300 sin6->sin6_port = sh->src_port;
2301 memcpy(&sin6->sin6_addr, &p6->addr, sizeof(struct in6_addr));
2302 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
2307 case SCTP_IPV4_ADDRESS:
2309 /* ipv4 address param */
2310 struct sctp_ipv4addr_param *p4, p4_buf;
2312 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv4addr_param)) {
2315 p4 = (struct sctp_ipv4addr_param *)sctp_get_next_param(m,
2316 offset + sizeof(struct sctp_asconf_chunk),
2317 &p4_buf.ph, sizeof(*p4));
2319 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v4 lookup addr\n",
2323 sin = (struct sockaddr_in *)&remote_store;
2324 sin->sin_family = AF_INET;
2325 sin->sin_len = sizeof(*sin);
2326 sin->sin_port = sh->src_port;
2327 memcpy(&sin->sin_addr, &p4->addr, sizeof(struct in_addr));
2328 if (sin->sin_addr.s_addr == INADDR_ANY)
2333 /* invalid address param type */
2338 stcb = sctp_findassoc_by_vtag(NULL, to, ntohl(sh->v_tag), inp_p,
2339 netp, sh->src_port, sh->dest_port, 1, vrf_id, 0);
2341 * printf("findassociation_ep_asconf: zero lookup address
2342 * finds stcb 0x%x\n", (uint32_t)stcb);
2345 stcb = sctp_findassociation_ep_addr(inp_p,
2346 (struct sockaddr *)&remote_store, netp,
2354 * allocate a sctp_inpcb and setup a temporary binding to a port/all
2355 * addresses. This way if we don't get a bind we by default pick a ephemeral
2356 * port with all addresses bound.
2359 sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
2362 * we get called when a new endpoint starts up. We need to allocate
2363 * the sctp_inpcb structure from the zone and init it. Mark it as
2364 * unbound and find a port that we can use as an ephemeral with
2365 * INADDR_ANY. If the user binds later no problem we can then add in
2366 * the specific addresses. And setup the default parameters for the
2370 struct sctp_inpcb *inp;
2372 struct timeval time;
2373 sctp_sharedkey_t *null_key;
2377 SCTP_INP_INFO_WLOCK();
2378 inp = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_ep), struct sctp_inpcb);
2380 SCTP_PRINTF("Out of SCTP-INPCB structures - no resources\n");
2381 SCTP_INP_INFO_WUNLOCK();
2382 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2386 bzero(inp, sizeof(*inp));
2388 /* bump generations */
2389 /* setup socket pointers */
2390 inp->sctp_socket = so;
2391 inp->ip_inp.inp.inp_socket = so;
2392 inp->sctp_associd_counter = 1;
2393 inp->partial_delivery_point = SCTP_SB_LIMIT_RCV(so) >> SCTP_PARTIAL_DELIVERY_SHIFT;
2394 inp->sctp_frag_point = SCTP_DEFAULT_MAXSEGMENT;
2395 inp->sctp_cmt_on_off = SCTP_BASE_SYSCTL(sctp_cmt_on_off);
2396 /* init the small hash table we use to track asocid <-> tcb */
2397 inp->sctp_asocidhash = SCTP_HASH_INIT(SCTP_STACK_VTAG_HASH_SIZE, &inp->hashasocidmark);
2398 if (inp->sctp_asocidhash == NULL) {
2399 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2400 SCTP_INP_INFO_WUNLOCK();
2405 struct inpcbpolicy *pcb_sp = NULL;
2407 error = ipsec_init_policy(so, &pcb_sp);
2408 /* Arrange to share the policy */
2409 inp->ip_inp.inp.inp_sp = pcb_sp;
2410 ((struct in6pcb *)(&inp->ip_inp.inp))->in6p_sp = pcb_sp;
2413 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2414 SCTP_INP_INFO_WUNLOCK();
2418 SCTP_INCR_EP_COUNT();
2419 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
2420 SCTP_INP_INFO_WUNLOCK();
2422 so->so_pcb = (caddr_t)inp;
2424 if ((SCTP_SO_TYPE(so) == SOCK_DGRAM) ||
2425 (SCTP_SO_TYPE(so) == SOCK_SEQPACKET)) {
2426 /* UDP style socket */
2427 inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
2428 SCTP_PCB_FLAGS_UNBOUND);
2429 /* Be sure it is NON-BLOCKING IO for UDP */
2430 /* SCTP_SET_SO_NBIO(so); */
2431 } else if (SCTP_SO_TYPE(so) == SOCK_STREAM) {
2432 /* TCP style socket */
2433 inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE |
2434 SCTP_PCB_FLAGS_UNBOUND);
2435 /* Be sure we have blocking IO by default */
2436 SCTP_CLEAR_SO_NBIO(so);
2439 * unsupported socket type (RAW, etc)- in case we missed it
2442 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EOPNOTSUPP);
2444 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2445 return (EOPNOTSUPP);
2447 if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_1) {
2448 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2449 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2450 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_2) {
2451 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2452 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2453 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_0) {
2454 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2455 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2457 inp->sctp_tcbhash = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_pcbtblsize),
2458 &inp->sctp_hashmark);
2459 if (inp->sctp_tcbhash == NULL) {
2460 SCTP_PRINTF("Out of SCTP-INPCB->hashinit - no resources\n");
2461 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2463 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2466 inp->def_vrf_id = vrf_id;
2468 SCTP_INP_INFO_WLOCK();
2469 SCTP_INP_LOCK_INIT(inp);
2470 INP_LOCK_INIT(&inp->ip_inp.inp, "inp", "sctpinp");
2471 SCTP_INP_READ_INIT(inp);
2472 SCTP_ASOC_CREATE_LOCK_INIT(inp);
2473 /* lock the new ep */
2474 SCTP_INP_WLOCK(inp);
2476 /* add it to the info area */
2477 LIST_INSERT_HEAD(&SCTP_BASE_INFO(listhead), inp, sctp_list);
2478 SCTP_INP_INFO_WUNLOCK();
2480 TAILQ_INIT(&inp->read_queue);
2481 LIST_INIT(&inp->sctp_addr_list);
2483 LIST_INIT(&inp->sctp_asoc_list);
2485 #ifdef SCTP_TRACK_FREED_ASOCS
2487 LIST_INIT(&inp->sctp_asoc_free_list);
2489 /* Init the timer structure for signature change */
2490 SCTP_OS_TIMER_INIT(&inp->sctp_ep.signature_change.timer);
2491 inp->sctp_ep.signature_change.type = SCTP_TIMER_TYPE_NEWCOOKIE;
2493 /* now init the actual endpoint default data */
2496 /* setup the base timeout information */
2497 m->sctp_timeoutticks[SCTP_TIMER_SEND] = SEC_TO_TICKS(SCTP_SEND_SEC); /* needed ? */
2498 m->sctp_timeoutticks[SCTP_TIMER_INIT] = SEC_TO_TICKS(SCTP_INIT_SEC); /* needed ? */
2499 m->sctp_timeoutticks[SCTP_TIMER_RECV] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default));
2500 m->sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default));
2501 m->sctp_timeoutticks[SCTP_TIMER_PMTU] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default));
2502 m->sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default));
2503 m->sctp_timeoutticks[SCTP_TIMER_SIGNATURE] = SEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default));
2504 /* all max/min max are in ms */
2505 m->sctp_maxrto = SCTP_BASE_SYSCTL(sctp_rto_max_default);
2506 m->sctp_minrto = SCTP_BASE_SYSCTL(sctp_rto_min_default);
2507 m->initial_rto = SCTP_BASE_SYSCTL(sctp_rto_initial_default);
2508 m->initial_init_rto_max = SCTP_BASE_SYSCTL(sctp_init_rto_max_default);
2509 m->sctp_sack_freq = SCTP_BASE_SYSCTL(sctp_sack_freq_default);
2511 m->max_open_streams_intome = MAX_SCTP_STREAMS;
2513 m->max_init_times = SCTP_BASE_SYSCTL(sctp_init_rtx_max_default);
2514 m->max_send_times = SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default);
2515 m->def_net_failure = SCTP_BASE_SYSCTL(sctp_path_rtx_max_default);
2516 m->sctp_sws_sender = SCTP_SWS_SENDER_DEF;
2517 m->sctp_sws_receiver = SCTP_SWS_RECEIVER_DEF;
2518 m->max_burst = SCTP_BASE_SYSCTL(sctp_max_burst_default);
2519 m->sctp_default_cc_module = SCTP_BASE_SYSCTL(sctp_default_cc_module);
2520 m->sctp_default_ss_module = SCTP_BASE_SYSCTL(sctp_default_ss_module);
2521 /* number of streams to pre-open on a association */
2522 m->pre_open_stream_count = SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default);
2524 /* Add adaptation cookie */
2525 m->adaptation_layer_indicator = 0x504C5253;
2527 /* seed random number generator */
2528 m->random_counter = 1;
2529 m->store_at = SCTP_SIGNATURE_SIZE;
2530 SCTP_READ_RANDOM(m->random_numbers, sizeof(m->random_numbers));
2531 sctp_fill_random_store(m);
2533 /* Minimum cookie size */
2534 m->size_of_a_cookie = (sizeof(struct sctp_init_msg) * 2) +
2535 sizeof(struct sctp_state_cookie);
2536 m->size_of_a_cookie += SCTP_SIGNATURE_SIZE;
2538 /* Setup the initial secret */
2539 (void)SCTP_GETTIME_TIMEVAL(&time);
2540 m->time_of_secret_change = time.tv_sec;
2542 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
2543 m->secret_key[0][i] = sctp_select_initial_TSN(m);
2545 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
2547 /* How long is a cookie good for ? */
2548 m->def_cookie_life = MSEC_TO_TICKS(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default));
2550 * Initialize authentication parameters
2552 m->local_hmacs = sctp_default_supported_hmaclist();
2553 m->local_auth_chunks = sctp_alloc_chunklist();
2554 sctp_auth_set_default_chunks(m->local_auth_chunks);
2555 LIST_INIT(&m->shared_keys);
2556 /* add default NULL key as key id 0 */
2557 null_key = sctp_alloc_sharedkey();
2558 sctp_insert_sharedkey(&m->shared_keys, null_key);
2559 SCTP_INP_WUNLOCK(inp);
2560 #ifdef SCTP_LOG_CLOSING
2561 sctp_log_closing(inp, NULL, 12);
2568 sctp_move_pcb_and_assoc(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp,
2569 struct sctp_tcb *stcb)
2571 struct sctp_nets *net;
2572 uint16_t lport, rport;
2573 struct sctppcbhead *head;
2574 struct sctp_laddr *laddr, *oladdr;
2576 atomic_add_int(&stcb->asoc.refcnt, 1);
2577 SCTP_TCB_UNLOCK(stcb);
2578 SCTP_INP_INFO_WLOCK();
2579 SCTP_INP_WLOCK(old_inp);
2580 SCTP_INP_WLOCK(new_inp);
2581 SCTP_TCB_LOCK(stcb);
2582 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2584 new_inp->sctp_ep.time_of_secret_change =
2585 old_inp->sctp_ep.time_of_secret_change;
2586 memcpy(new_inp->sctp_ep.secret_key, old_inp->sctp_ep.secret_key,
2587 sizeof(old_inp->sctp_ep.secret_key));
2588 new_inp->sctp_ep.current_secret_number =
2589 old_inp->sctp_ep.current_secret_number;
2590 new_inp->sctp_ep.last_secret_number =
2591 old_inp->sctp_ep.last_secret_number;
2592 new_inp->sctp_ep.size_of_a_cookie = old_inp->sctp_ep.size_of_a_cookie;
2594 /* make it so new data pours into the new socket */
2595 stcb->sctp_socket = new_inp->sctp_socket;
2596 stcb->sctp_ep = new_inp;
2598 /* Copy the port across */
2599 lport = new_inp->sctp_lport = old_inp->sctp_lport;
2600 rport = stcb->rport;
2601 /* Pull the tcb from the old association */
2602 LIST_REMOVE(stcb, sctp_tcbhash);
2603 LIST_REMOVE(stcb, sctp_tcblist);
2604 if (stcb->asoc.in_asocid_hash) {
2605 LIST_REMOVE(stcb, sctp_tcbasocidhash);
2607 /* Now insert the new_inp into the TCP connected hash */
2608 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
2610 LIST_INSERT_HEAD(head, new_inp, sctp_hash);
2611 /* Its safe to access */
2612 new_inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
2614 /* Now move the tcb into the endpoint list */
2615 LIST_INSERT_HEAD(&new_inp->sctp_asoc_list, stcb, sctp_tcblist);
2617 * Question, do we even need to worry about the ep-hash since we
2618 * only have one connection? Probably not :> so lets get rid of it
2619 * and not suck up any kernel memory in that.
2621 if (stcb->asoc.in_asocid_hash) {
2622 struct sctpasochead *lhd;
2624 lhd = &new_inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(stcb->asoc.assoc_id,
2625 new_inp->hashasocidmark)];
2626 LIST_INSERT_HEAD(lhd, stcb, sctp_tcbasocidhash);
2628 /* Ok. Let's restart timer. */
2629 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2630 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, new_inp,
2634 SCTP_INP_INFO_WUNLOCK();
2635 if (new_inp->sctp_tcbhash != NULL) {
2636 SCTP_HASH_FREE(new_inp->sctp_tcbhash, new_inp->sctp_hashmark);
2637 new_inp->sctp_tcbhash = NULL;
2639 if ((new_inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
2640 /* Subset bound, so copy in the laddr list from the old_inp */
2641 LIST_FOREACH(oladdr, &old_inp->sctp_addr_list, sctp_nxt_addr) {
2642 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2643 if (laddr == NULL) {
2645 * Gak, what can we do? This assoc is really
2646 * HOSED. We probably should send an abort
2649 SCTPDBG(SCTP_DEBUG_PCB1, "Association hosed in TCP model, out of laddr memory\n");
2652 SCTP_INCR_LADDR_COUNT();
2653 bzero(laddr, sizeof(*laddr));
2654 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2655 laddr->ifa = oladdr->ifa;
2656 atomic_add_int(&laddr->ifa->refcount, 1);
2657 LIST_INSERT_HEAD(&new_inp->sctp_addr_list, laddr,
2659 new_inp->laddr_count++;
2663 * Now any running timers need to be adjusted since we really don't
2664 * care if they are running or not just blast in the new_inp into
2668 stcb->asoc.hb_timer.ep = (void *)new_inp;
2669 stcb->asoc.dack_timer.ep = (void *)new_inp;
2670 stcb->asoc.asconf_timer.ep = (void *)new_inp;
2671 stcb->asoc.strreset_timer.ep = (void *)new_inp;
2672 stcb->asoc.shut_guard_timer.ep = (void *)new_inp;
2673 stcb->asoc.autoclose_timer.ep = (void *)new_inp;
2674 stcb->asoc.delayed_event_timer.ep = (void *)new_inp;
2675 stcb->asoc.delete_prim_timer.ep = (void *)new_inp;
2676 /* now what about the nets? */
2677 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2678 net->pmtu_timer.ep = (void *)new_inp;
2679 net->rxt_timer.ep = (void *)new_inp;
2680 net->fr_timer.ep = (void *)new_inp;
2682 SCTP_INP_WUNLOCK(new_inp);
2683 SCTP_INP_WUNLOCK(old_inp);
2689 /* sctp_ifap is used to bypass normal local address validation checks */
2691 sctp_inpcb_bind(struct socket *so, struct sockaddr *addr,
2692 struct sctp_ifa *sctp_ifap, struct thread *p)
2694 /* bind a ep to a socket address */
2695 struct sctppcbhead *head;
2696 struct sctp_inpcb *inp, *inp_tmp;
2697 struct inpcb *ip_inp;
2698 int port_reuse_active = 0;
2707 inp = (struct sctp_inpcb *)so->so_pcb;
2708 ip_inp = (struct inpcb *)so->so_pcb;
2711 SCTPDBG(SCTP_DEBUG_PCB1, "Bind called port:%d\n",
2712 ntohs(((struct sockaddr_in *)addr)->sin_port));
2713 SCTPDBG(SCTP_DEBUG_PCB1, "Addr :");
2714 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
2717 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
2718 /* already did a bind, subsequent binds NOT allowed ! */
2719 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2724 panic("null proc/thread");
2727 switch (addr->sa_family) {
2730 struct sockaddr_in *sin;
2732 /* IPV6_V6ONLY socket? */
2733 if (SCTP_IPV6_V6ONLY(ip_inp)) {
2734 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2737 if (addr->sa_len != sizeof(*sin)) {
2738 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2741 sin = (struct sockaddr_in *)addr;
2742 lport = sin->sin_port;
2744 * For LOOPBACK the prison_local_ip4() call
2745 * will transmute the ip address to the
2748 if (p && (error = prison_local_ip4(p->td_ucred, &sin->sin_addr)) != 0) {
2749 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2752 if (sin->sin_addr.s_addr != INADDR_ANY) {
2761 * Only for pure IPv6 Address. (No IPv4
2764 struct sockaddr_in6 *sin6;
2766 sin6 = (struct sockaddr_in6 *)addr;
2768 if (addr->sa_len != sizeof(*sin6)) {
2769 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2772 lport = sin6->sin6_port;
2775 * For LOOPBACK the prison_local_ip6() call
2776 * will transmute the ipv6 address to the
2779 if (p && (error = prison_local_ip6(p->td_ucred, &sin6->sin6_addr,
2780 (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
2781 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2784 if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2786 /* KAME hack: embed scopeid */
2787 if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
2788 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2792 /* this must be cleared for ifa_ifwithaddr() */
2793 sin6->sin6_scope_id = 0;
2798 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EAFNOSUPPORT);
2799 return (EAFNOSUPPORT);
2802 SCTP_INP_INFO_WLOCK();
2803 SCTP_INP_WLOCK(inp);
2804 /* Setup a vrf_id to be the default for the non-bind-all case. */
2805 vrf_id = inp->def_vrf_id;
2807 /* increase our count due to the unlock we do */
2808 SCTP_INP_INCR_REF(inp);
2811 * Did the caller specify a port? if so we must see if a ep
2812 * already has this one bound.
2814 /* got to be root to get at low ports */
2815 if (ntohs(lport) < IPPORT_RESERVED) {
2817 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2819 SCTP_INP_DECR_REF(inp);
2820 SCTP_INP_WUNLOCK(inp);
2821 SCTP_INP_INFO_WUNLOCK();
2826 SCTP_INP_DECR_REF(inp);
2827 SCTP_INP_WUNLOCK(inp);
2828 SCTP_INP_INFO_WUNLOCK();
2829 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2832 SCTP_INP_WUNLOCK(inp);
2834 vrf_id = inp->def_vrf_id;
2835 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2836 if (inp_tmp != NULL) {
2838 * lock guy returned and lower count note
2839 * that we are not bound so inp_tmp should
2840 * NEVER be inp. And it is this inp
2841 * (inp_tmp) that gets the reference bump,
2842 * so we must lower it.
2844 SCTP_INP_DECR_REF(inp_tmp);
2846 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2847 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2849 * Ok, must be one-2-one and
2850 * allowing port re-use
2852 port_reuse_active = 1;
2853 goto continue_anyway;
2855 SCTP_INP_DECR_REF(inp);
2856 SCTP_INP_INFO_WUNLOCK();
2857 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2858 return (EADDRINUSE);
2861 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2862 if (inp_tmp != NULL) {
2864 * lock guy returned and lower count note
2865 * that we are not bound so inp_tmp should
2866 * NEVER be inp. And it is this inp
2867 * (inp_tmp) that gets the reference bump,
2868 * so we must lower it.
2870 SCTP_INP_DECR_REF(inp_tmp);
2872 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2873 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2875 * Ok, must be one-2-one and
2876 * allowing port re-use
2878 port_reuse_active = 1;
2879 goto continue_anyway;
2881 SCTP_INP_DECR_REF(inp);
2882 SCTP_INP_INFO_WUNLOCK();
2883 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2884 return (EADDRINUSE);
2888 SCTP_INP_WLOCK(inp);
2890 /* verify that no lport is not used by a singleton */
2891 if ((port_reuse_active == 0) &&
2892 (inp_tmp = sctp_isport_inuse(inp, lport, vrf_id))
2894 /* Sorry someone already has this one bound */
2895 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2896 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2897 port_reuse_active = 1;
2899 SCTP_INP_DECR_REF(inp);
2900 SCTP_INP_WUNLOCK(inp);
2901 SCTP_INP_INFO_WUNLOCK();
2902 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2903 return (EADDRINUSE);
2908 uint16_t first, last, candidate;
2912 if (ip_inp->inp_flags & INP_HIGHPORT) {
2913 first = MODULE_GLOBAL(ipport_hifirstauto);
2914 last = MODULE_GLOBAL(ipport_hilastauto);
2915 } else if (ip_inp->inp_flags & INP_LOWPORT) {
2917 priv_check(p, PRIV_NETINET_RESERVEDPORT)
2919 SCTP_INP_DECR_REF(inp);
2920 SCTP_INP_WUNLOCK(inp);
2921 SCTP_INP_INFO_WUNLOCK();
2922 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2925 first = MODULE_GLOBAL(ipport_lowfirstauto);
2926 last = MODULE_GLOBAL(ipport_lowlastauto);
2928 first = MODULE_GLOBAL(ipport_firstauto);
2929 last = MODULE_GLOBAL(ipport_lastauto);
2938 count = last - first + 1; /* number of candidates */
2939 candidate = first + sctp_select_initial_TSN(&inp->sctp_ep) % (count);
2943 if (sctp_isport_inuse(inp, htons(candidate), inp->def_vrf_id) == NULL) {
2948 SCTP_INP_DECR_REF(inp);
2949 SCTP_INP_WUNLOCK(inp);
2950 SCTP_INP_INFO_WUNLOCK();
2951 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRINUSE);
2952 return (EADDRINUSE);
2954 if (candidate == last)
2957 candidate = candidate + 1;
2960 lport = htons(candidate);
2962 SCTP_INP_DECR_REF(inp);
2963 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE |
2964 SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
2966 * this really should not happen. The guy did a non-blocking
2967 * bind and then did a close at the same time.
2969 SCTP_INP_WUNLOCK(inp);
2970 SCTP_INP_INFO_WUNLOCK();
2971 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2974 /* ok we look clear to give out this port, so lets setup the binding */
2976 /* binding to all addresses, so just set in the proper flags */
2977 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUNDALL;
2978 /* set the automatic addr changes from kernel flag */
2979 if (SCTP_BASE_SYSCTL(sctp_auto_asconf) == 0) {
2980 sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF);
2981 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
2983 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
2984 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
2986 if (SCTP_BASE_SYSCTL(sctp_multiple_asconfs) == 0) {
2987 sctp_feature_off(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
2989 sctp_feature_on(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
2992 * set the automatic mobility_base from kernel flag (by
2995 if (SCTP_BASE_SYSCTL(sctp_mobility_base) == 0) {
2996 sctp_mobility_feature_off(inp, SCTP_MOBILITY_BASE);
2997 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
2999 sctp_mobility_feature_on(inp, SCTP_MOBILITY_BASE);
3000 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3003 * set the automatic mobility_fasthandoff from kernel flag
3006 if (SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) == 0) {
3007 sctp_mobility_feature_off(inp, SCTP_MOBILITY_FASTHANDOFF);
3008 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3010 sctp_mobility_feature_on(inp, SCTP_MOBILITY_FASTHANDOFF);
3011 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3015 * bind specific, make sure flags is off and add a new
3016 * address structure to the sctp_addr_list inside the ep
3019 * We will need to allocate one and insert it at the head. The
3020 * socketopt call can just insert new addresses in there as
3021 * well. It will also have to do the embed scope kame hack
3022 * too (before adding).
3024 struct sctp_ifa *ifa;
3025 struct sockaddr_storage store_sa;
3027 memset(&store_sa, 0, sizeof(store_sa));
3028 if (addr->sa_family == AF_INET) {
3029 struct sockaddr_in *sin;
3031 sin = (struct sockaddr_in *)&store_sa;
3032 memcpy(sin, addr, sizeof(struct sockaddr_in));
3034 } else if (addr->sa_family == AF_INET6) {
3035 struct sockaddr_in6 *sin6;
3037 sin6 = (struct sockaddr_in6 *)&store_sa;
3038 memcpy(sin6, addr, sizeof(struct sockaddr_in6));
3039 sin6->sin6_port = 0;
3042 * first find the interface with the bound address need to
3043 * zero out the port to find the address! yuck! can't do
3044 * this earlier since need port for sctp_pcb_findep()
3046 if (sctp_ifap != NULL)
3050 * Note for BSD we hit here always other O/S's will
3051 * pass things in via the sctp_ifap argument
3054 ifa = sctp_find_ifa_by_addr((struct sockaddr *)&store_sa,
3055 vrf_id, SCTP_ADDR_NOT_LOCKED);
3058 /* Can't find an interface with that address */
3059 SCTP_INP_WUNLOCK(inp);
3060 SCTP_INP_INFO_WUNLOCK();
3061 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EADDRNOTAVAIL);
3062 return (EADDRNOTAVAIL);
3064 if (addr->sa_family == AF_INET6) {
3065 /* GAK, more FIXME IFA lock? */
3066 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
3067 /* Can't bind a non-existent addr. */
3068 SCTP_INP_WUNLOCK(inp);
3069 SCTP_INP_INFO_WUNLOCK();
3070 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
3074 /* we're not bound all */
3075 inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUNDALL;
3076 /* allow bindx() to send ASCONF's for binding changes */
3077 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3078 /* clear automatic addr changes from kernel flag */
3079 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3081 /* add this address to the endpoint list */
3082 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, 0);
3084 SCTP_INP_WUNLOCK(inp);
3085 SCTP_INP_INFO_WUNLOCK();
3090 /* find the bucket */
3091 if (port_reuse_active) {
3092 /* Put it into tcp 1-2-1 hash */
3093 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashtcpmark))];
3094 inp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
3096 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashmark))];
3098 /* put it in the bucket */
3099 LIST_INSERT_HEAD(head, inp, sctp_hash);
3100 SCTPDBG(SCTP_DEBUG_PCB1, "Main hash to bind at head:%p, bound port:%d - in tcp_pool=%d\n",
3101 head, ntohs(lport), port_reuse_active);
3102 /* set in the port */
3103 inp->sctp_lport = lport;
3105 /* turn off just the unbound flag */
3106 inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
3107 SCTP_INP_WUNLOCK(inp);
3108 SCTP_INP_INFO_WUNLOCK();
3114 sctp_iterator_inp_being_freed(struct sctp_inpcb *inp)
3116 struct sctp_iterator *it, *nit;
3119 * We enter with the only the ITERATOR_LOCK in place and a write
3120 * lock on the inp_info stuff.
3122 it = sctp_it_ctl.cur_it;
3123 if (it && (it->vn != curvnet)) {
3124 /* Its not looking at our VNET */
3127 if (it && (it->inp == inp)) {
3129 * This is tricky and we hold the iterator lock, but when it
3130 * returns and gets the lock (when we release it) the
3131 * iterator will try to operate on inp. We need to stop that
3132 * from happening. But of course the iterator has a
3133 * reference on the stcb and inp. We can mark it and it will
3136 * If its a single iterator situation, we set the end iterator
3137 * flag. Otherwise we set the iterator to go to the next
3141 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3142 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
3144 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_INP;
3148 * Now go through and remove any single reference to our inp that
3149 * may be still pending on the list
3151 SCTP_IPI_ITERATOR_WQ_LOCK();
3152 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
3153 if (it->vn != curvnet) {
3156 if (it->inp == inp) {
3157 /* This one points to me is it inp specific? */
3158 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3159 /* Remove and free this one */
3160 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead,
3162 if (it->function_atend != NULL) {
3163 (*it->function_atend) (it->pointer, it->val);
3165 SCTP_FREE(it, SCTP_M_ITER);
3167 it->inp = LIST_NEXT(it->inp, sctp_list);
3169 SCTP_INP_INCR_REF(it->inp);
3173 * When its put in the refcnt is incremented so decr
3176 SCTP_INP_DECR_REF(inp);
3179 SCTP_IPI_ITERATOR_WQ_UNLOCK();
3182 /* release sctp_inpcb unbind the port */
3184 sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from)
3187 * Here we free a endpoint. We must find it (if it is in the Hash
3188 * table) and remove it from there. Then we must also find it in the
3189 * overall list and remove it from there. After all removals are
3190 * complete then any timer has to be stopped. Then start the actual
3191 * freeing. a) Any local lists. b) Any associations. c) The hash of
3192 * all associations. d) finally the ep itself.
3195 struct sctp_tcb *asoc, *nasoc;
3196 struct sctp_laddr *laddr, *nladdr;
3197 struct inpcb *ip_pcb;
3199 int being_refed = 0;
3200 struct sctp_queued_to_read *sq, *nsq;
3202 sctp_sharedkey_t *shared_key, *nshared_key;
3205 #ifdef SCTP_LOG_CLOSING
3206 sctp_log_closing(inp, NULL, 0);
3208 SCTP_ITERATOR_LOCK();
3209 /* mark any iterators on the list or being processed */
3210 sctp_iterator_inp_being_freed(inp);
3211 SCTP_ITERATOR_UNLOCK();
3212 so = inp->sctp_socket;
3213 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
3214 /* been here before.. eeks.. get out of here */
3215 SCTP_PRINTF("This conflict in free SHOULD not be happening! from %d, imm %d\n", from, immediate);
3216 #ifdef SCTP_LOG_CLOSING
3217 sctp_log_closing(inp, NULL, 1);
3221 SCTP_ASOC_CREATE_LOCK(inp);
3222 SCTP_INP_INFO_WLOCK();
3224 SCTP_INP_WLOCK(inp);
3225 if (from == SCTP_CALLED_AFTER_CMPSET_OFCLOSE) {
3226 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CLOSE_IP;
3227 /* socket is gone, so no more wakeups allowed */
3228 inp->sctp_flags |= SCTP_PCB_FLAGS_DONT_WAKE;
3229 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
3230 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
3233 /* First time through we have the socket lock, after that no more. */
3234 sctp_timer_stop(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL,
3235 SCTP_FROM_SCTP_PCB + SCTP_LOC_1);
3238 sctp_m_freem(inp->control);
3239 inp->control = NULL;
3242 sctp_m_freem(inp->pkt);
3246 ip_pcb = &inp->ip_inp.inp; /* we could just cast the main pointer
3247 * here but I will be nice :> (i.e.
3249 if (immediate == SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
3253 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3254 SCTP_TCB_LOCK(asoc);
3255 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3256 /* Skip guys being freed */
3258 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3260 * Special case - we did not start a
3261 * kill timer on the asoc due to it
3262 * was not closed. So go ahead and
3265 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3266 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3268 SCTP_TCB_UNLOCK(asoc);
3271 if (((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_WAIT) ||
3272 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_COOKIE_ECHOED)) &&
3273 (asoc->asoc.total_output_queue_size == 0)) {
3275 * If we have data in queue, we don't want
3276 * to just free since the app may have done,
3277 * send()/close or connect/send/close. And
3278 * it wants the data to get across first.
3280 /* Just abandon things in the front states */
3281 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_NOFORCE,
3282 SCTP_FROM_SCTP_PCB + SCTP_LOC_2) == 0) {
3287 /* Disconnect the socket please */
3288 asoc->sctp_socket = NULL;
3289 asoc->asoc.state |= SCTP_STATE_CLOSED_SOCKET;
3290 if ((asoc->asoc.size_on_reasm_queue > 0) ||
3291 (asoc->asoc.control_pdapi) ||
3292 (asoc->asoc.size_on_all_streams > 0) ||
3293 (so && (so->so_rcv.sb_cc > 0))
3295 /* Left with Data unread */
3296 struct mbuf *op_err;
3298 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3299 0, M_DONTWAIT, 1, MT_DATA);
3301 /* Fill in the user initiated abort */
3302 struct sctp_paramhdr *ph;
3305 SCTP_BUF_LEN(op_err) =
3306 sizeof(struct sctp_paramhdr) + sizeof(uint32_t);
3308 struct sctp_paramhdr *);
3309 ph->param_type = htons(
3310 SCTP_CAUSE_USER_INITIATED_ABT);
3311 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3312 ippp = (uint32_t *) (ph + 1);
3313 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_3);
3315 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_3;
3316 #if defined(SCTP_PANIC_ON_ABORT)
3317 panic("inpcb_free does an abort");
3319 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3320 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3321 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3322 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3323 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3325 if (sctp_free_assoc(inp, asoc,
3326 SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_4) == 0) {
3330 } else if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3331 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3332 (asoc->asoc.stream_queue_cnt == 0)
3334 if (asoc->asoc.locked_on_sending) {
3337 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
3338 (SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
3340 * there is nothing queued to send,
3341 * so I send shutdown
3343 sctp_send_shutdown(asoc, asoc->asoc.primary_destination);
3344 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3345 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3346 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3348 SCTP_SET_STATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_SENT);
3349 SCTP_CLEAR_SUBSTATE(&asoc->asoc, SCTP_STATE_SHUTDOWN_PENDING);
3350 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, asoc->sctp_ep, asoc,
3351 asoc->asoc.primary_destination);
3352 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3353 asoc->asoc.primary_destination);
3354 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_LOCKED);
3357 /* mark into shutdown pending */
3358 struct sctp_stream_queue_pending *sp;
3360 asoc->asoc.state |= SCTP_STATE_SHUTDOWN_PENDING;
3361 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc,
3362 asoc->asoc.primary_destination);
3363 if (asoc->asoc.locked_on_sending) {
3364 sp = TAILQ_LAST(&((asoc->asoc.locked_on_sending)->outqueue),
3367 SCTP_PRINTF("Error, sp is NULL, locked on sending is %p strm:%d\n",
3368 asoc->asoc.locked_on_sending,
3369 asoc->asoc.locked_on_sending->stream_no);
3371 if ((sp->length == 0) && (sp->msg_is_complete == 0))
3372 asoc->asoc.state |= SCTP_STATE_PARTIAL_MSG_LEFT;
3375 if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3376 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3377 (asoc->asoc.state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
3378 struct mbuf *op_err;
3381 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3382 0, M_DONTWAIT, 1, MT_DATA);
3388 struct sctp_paramhdr *ph;
3391 SCTP_BUF_LEN(op_err) =
3392 (sizeof(struct sctp_paramhdr) +
3395 struct sctp_paramhdr *);
3396 ph->param_type = htons(
3397 SCTP_CAUSE_USER_INITIATED_ABT);
3398 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3399 ippp = (uint32_t *) (ph + 1);
3400 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_5);
3402 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_5;
3403 #if defined(SCTP_PANIC_ON_ABORT)
3404 panic("inpcb_free does an abort");
3407 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3408 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3409 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3410 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3411 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3413 if (sctp_free_assoc(inp, asoc,
3414 SCTP_PCBFREE_NOFORCE,
3415 SCTP_FROM_SCTP_PCB + SCTP_LOC_6) == 0) {
3420 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
3424 SCTP_TCB_UNLOCK(asoc);
3426 /* now is there some left in our SHUTDOWN state? */
3428 #ifdef SCTP_LOG_CLOSING
3429 sctp_log_closing(inp, NULL, 2);
3431 inp->sctp_socket = NULL;
3432 SCTP_INP_WUNLOCK(inp);
3433 SCTP_ASOC_CREATE_UNLOCK(inp);
3434 SCTP_INP_INFO_WUNLOCK();
3438 inp->sctp_socket = NULL;
3439 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) !=
3440 SCTP_PCB_FLAGS_UNBOUND) {
3442 * ok, this guy has been bound. It's port is somewhere in
3443 * the SCTP_BASE_INFO(hash table). Remove it!
3445 LIST_REMOVE(inp, sctp_hash);
3446 inp->sctp_flags |= SCTP_PCB_FLAGS_UNBOUND;
3449 * If there is a timer running to kill us, forget it, since it may
3450 * have a contest on the INP lock.. which would cause us to die ...
3453 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3454 SCTP_TCB_LOCK(asoc);
3455 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3456 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3457 asoc->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
3458 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3461 SCTP_TCB_UNLOCK(asoc);
3464 /* Free associations that are NOT killing us */
3465 if ((SCTP_GET_STATE(&asoc->asoc) != SCTP_STATE_COOKIE_WAIT) &&
3466 ((asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) {
3467 struct mbuf *op_err;
3470 op_err = sctp_get_mbuf_for_msg((sizeof(struct sctp_paramhdr) + sizeof(uint32_t)),
3471 0, M_DONTWAIT, 1, MT_DATA);
3473 /* Fill in the user initiated abort */
3474 struct sctp_paramhdr *ph;
3476 SCTP_BUF_LEN(op_err) = (sizeof(struct sctp_paramhdr) +
3478 ph = mtod(op_err, struct sctp_paramhdr *);
3479 ph->param_type = htons(
3480 SCTP_CAUSE_USER_INITIATED_ABT);
3481 ph->param_length = htons(SCTP_BUF_LEN(op_err));
3482 ippp = (uint32_t *) (ph + 1);
3483 *ippp = htonl(SCTP_FROM_SCTP_PCB + SCTP_LOC_7);
3486 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_7;
3487 #if defined(SCTP_PANIC_ON_ABORT)
3488 panic("inpcb_free does an abort");
3490 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3491 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3492 } else if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3494 SCTP_TCB_UNLOCK(asoc);
3497 if ((SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_OPEN) ||
3498 (SCTP_GET_STATE(&asoc->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3499 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3501 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_FORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_8) == 0) {
3506 /* Ok we have someone out there that will kill us */
3507 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3508 #ifdef SCTP_LOG_CLOSING
3509 sctp_log_closing(inp, NULL, 3);
3511 SCTP_INP_WUNLOCK(inp);
3512 SCTP_ASOC_CREATE_UNLOCK(inp);
3513 SCTP_INP_INFO_WUNLOCK();
3516 if (SCTP_INP_LOCK_CONTENDED(inp))
3518 if (SCTP_INP_READ_CONTENDED(inp))
3520 if (SCTP_ASOC_CREATE_LOCK_CONTENDED(inp))
3523 if ((inp->refcount) ||
3525 (inp->sctp_flags & SCTP_PCB_FLAGS_CLOSE_IP)) {
3526 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3527 #ifdef SCTP_LOG_CLOSING
3528 sctp_log_closing(inp, NULL, 4);
3530 sctp_timer_start(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL);
3531 SCTP_INP_WUNLOCK(inp);
3532 SCTP_ASOC_CREATE_UNLOCK(inp);
3533 SCTP_INP_INFO_WUNLOCK();
3536 inp->sctp_ep.signature_change.type = 0;
3537 inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_ALLGONE;
3539 * Remove it from the list .. last thing we need a lock for.
3541 LIST_REMOVE(inp, sctp_list);
3542 SCTP_INP_WUNLOCK(inp);
3543 SCTP_ASOC_CREATE_UNLOCK(inp);
3544 SCTP_INP_INFO_WUNLOCK();
3546 * Now we release all locks. Since this INP cannot be found anymore
3547 * except possibly by the kill timer that might be running. We call
3548 * the drain function here. It should hit the case were it sees the
3549 * ACTIVE flag cleared and exit out freeing us to proceed and
3550 * destroy everything.
3552 if (from != SCTP_CALLED_FROM_INPKILL_TIMER) {
3553 (void)SCTP_OS_TIMER_STOP_DRAIN(&inp->sctp_ep.signature_change.timer);
3555 /* Probably un-needed */
3556 (void)SCTP_OS_TIMER_STOP(&inp->sctp_ep.signature_change.timer);
3559 #ifdef SCTP_LOG_CLOSING
3560 sctp_log_closing(inp, NULL, 5);
3564 if ((inp->sctp_asocidhash) != NULL) {
3565 SCTP_HASH_FREE(inp->sctp_asocidhash, inp->hashasocidmark);
3566 inp->sctp_asocidhash = NULL;
3568 /* sa_ignore FREED_MEMORY */
3569 TAILQ_FOREACH_SAFE(sq, &inp->read_queue, next, nsq) {
3570 /* Its only abandoned if it had data left */
3572 SCTP_STAT_INCR(sctps_left_abandon);
3574 TAILQ_REMOVE(&inp->read_queue, sq, next);
3575 sctp_free_remote_addr(sq->whoFrom);
3577 so->so_rcv.sb_cc -= sq->length;
3579 sctp_m_freem(sq->data);
3583 * no need to free the net count, since at this point all
3586 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
3587 SCTP_DECR_READQ_COUNT();
3589 /* Now the sctp_pcb things */
3591 * free each asoc if it is not already closed/free. we can't use the
3592 * macro here since le_next will get freed as part of the
3593 * sctp_free_assoc() call.
3598 ipsec_delete_pcbpolicy(ip_pcb);
3601 /* Unlocks not needed since the socket is gone now */
3603 if (ip_pcb->inp_options) {
3604 (void)sctp_m_free(ip_pcb->inp_options);
3605 ip_pcb->inp_options = 0;
3607 if (ip_pcb->inp_moptions) {
3608 inp_freemoptions(ip_pcb->inp_moptions);
3609 ip_pcb->inp_moptions = 0;
3612 if (ip_pcb->inp_vflag & INP_IPV6) {
3613 struct in6pcb *in6p;
3615 in6p = (struct in6pcb *)inp;
3616 ip6_freepcbopts(in6p->in6p_outputopts);
3619 ip_pcb->inp_vflag = 0;
3620 /* free up authentication fields */
3621 if (inp->sctp_ep.local_auth_chunks != NULL)
3622 sctp_free_chunklist(inp->sctp_ep.local_auth_chunks);
3623 if (inp->sctp_ep.local_hmacs != NULL)
3624 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3626 LIST_FOREACH_SAFE(shared_key, &inp->sctp_ep.shared_keys, next, nshared_key) {
3627 LIST_REMOVE(shared_key, next);
3628 sctp_free_sharedkey(shared_key);
3629 /* sa_ignore FREED_MEMORY */
3633 * if we have an address list the following will free the list of
3634 * ifaddr's that are set into this ep. Again macro limitations here,
3635 * since the LIST_FOREACH could be a bad idea.
3637 LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
3638 sctp_remove_laddr(laddr);
3641 #ifdef SCTP_TRACK_FREED_ASOCS
3643 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_free_list, sctp_tcblist, nasoc) {
3644 LIST_REMOVE(asoc, sctp_tcblist);
3645 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), asoc);
3646 SCTP_DECR_ASOC_COUNT();
3648 /* *** END TEMP CODE *** */
3650 /* Now lets see about freeing the EP hash table. */
3651 if (inp->sctp_tcbhash != NULL) {
3652 SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark);
3653 inp->sctp_tcbhash = NULL;
3655 /* Now we must put the ep memory back into the zone pool */
3656 INP_LOCK_DESTROY(&inp->ip_inp.inp);
3657 SCTP_INP_LOCK_DESTROY(inp);
3658 SCTP_INP_READ_DESTROY(inp);
3659 SCTP_ASOC_CREATE_LOCK_DESTROY(inp);
3660 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
3661 SCTP_DECR_EP_COUNT();
3666 sctp_findnet(struct sctp_tcb *stcb, struct sockaddr *addr)
3668 struct sctp_nets *net;
3670 /* locate the address */
3671 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3672 if (sctp_cmpaddr(addr, (struct sockaddr *)&net->ro._l_addr))
3680 sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id)
3682 struct sctp_ifa *sctp_ifa;
3684 sctp_ifa = sctp_find_ifa_by_addr(addr, vrf_id, SCTP_ADDR_NOT_LOCKED);
3693 * add's a remote endpoint address, done with the INIT/INIT-ACK as well as
3694 * when a ASCONF arrives that adds it. It will also initialize all the cwnd
3698 sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr,
3699 int set_scope, int from)
3702 * The following is redundant to the same lines in the
3703 * sctp_aloc_assoc() but is needed since others call the add address
3706 struct sctp_nets *net, *netfirst;
3709 SCTPDBG(SCTP_DEBUG_PCB1, "Adding an address (from:%d) to the peer: ",
3711 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, newaddr);
3713 netfirst = sctp_findnet(stcb, newaddr);
3716 * Lie and return ok, we don't want to make the association
3717 * go away for this behavior. It will happen in the TCP
3718 * model in a connected socket. It does not reach the hash
3719 * table until after the association is built so it can't be
3720 * found. Mark as reachable, since the initial creation will
3721 * have been cleared and the NOT_IN_ASSOC flag will have
3722 * been added... and we don't want to end up removing it
3725 if (netfirst->dest_state & SCTP_ADDR_UNCONFIRMED) {
3726 netfirst->dest_state = (SCTP_ADDR_REACHABLE |
3727 SCTP_ADDR_UNCONFIRMED);
3729 netfirst->dest_state = SCTP_ADDR_REACHABLE;
3735 if (newaddr->sa_family == AF_INET) {
3736 struct sockaddr_in *sin;
3738 sin = (struct sockaddr_in *)newaddr;
3739 if (sin->sin_addr.s_addr == 0) {
3740 /* Invalid address */
3743 /* zero out the bzero area */
3744 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
3746 /* assure len is set */
3747 sin->sin_len = sizeof(struct sockaddr_in);
3749 #ifdef SCTP_DONT_DO_PRIVADDR_SCOPE
3750 stcb->ipv4_local_scope = 1;
3752 if (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
3753 stcb->asoc.ipv4_local_scope = 1;
3755 #endif /* SCTP_DONT_DO_PRIVADDR_SCOPE */
3757 /* Validate the address is in scope */
3758 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) &&
3759 (stcb->asoc.ipv4_local_scope == 0)) {
3764 } else if (newaddr->sa_family == AF_INET6) {
3765 struct sockaddr_in6 *sin6;
3767 sin6 = (struct sockaddr_in6 *)newaddr;
3768 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3769 /* Invalid address */
3772 /* assure len is set */
3773 sin6->sin6_len = sizeof(struct sockaddr_in6);
3775 if (sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id)) {
3776 stcb->asoc.loopback_scope = 1;
3777 stcb->asoc.local_scope = 0;
3778 stcb->asoc.ipv4_local_scope = 1;
3779 stcb->asoc.site_scope = 1;
3780 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
3782 * If the new destination is a LINK_LOCAL we
3783 * must have common site scope. Don't set
3784 * the local scope since we may not share
3785 * all links, only loopback can do this.
3786 * Links on the local network would also be
3787 * on our private network for v4 too.
3789 stcb->asoc.ipv4_local_scope = 1;
3790 stcb->asoc.site_scope = 1;
3791 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
3793 * If the new destination is SITE_LOCAL then
3794 * we must have site scope in common.
3796 stcb->asoc.site_scope = 1;
3799 /* Validate the address is in scope */
3800 if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) &&
3801 (stcb->asoc.loopback_scope == 0)) {
3803 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
3804 (stcb->asoc.local_scope == 0)) {
3806 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) &&
3807 (stcb->asoc.site_scope == 0)) {
3813 /* not supported family type */
3816 net = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_net), struct sctp_nets);
3820 SCTP_INCR_RADDR_COUNT();
3821 bzero(net, sizeof(*net));
3822 (void)SCTP_GETTIME_TIMEVAL(&net->start_time);
3823 memcpy(&net->ro._l_addr, newaddr, newaddr->sa_len);
3824 if (newaddr->sa_family == AF_INET) {
3825 ((struct sockaddr_in *)&net->ro._l_addr)->sin_port = stcb->rport;
3826 } else if (newaddr->sa_family == AF_INET6) {
3827 ((struct sockaddr_in6 *)&net->ro._l_addr)->sin6_port = stcb->rport;
3829 net->addr_is_local = sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id);
3830 if (net->addr_is_local && ((set_scope || (from == SCTP_ADDR_IS_CONFIRMED)))) {
3831 stcb->asoc.loopback_scope = 1;
3832 stcb->asoc.ipv4_local_scope = 1;
3833 stcb->asoc.local_scope = 0;
3834 stcb->asoc.site_scope = 1;
3837 net->failure_threshold = stcb->asoc.def_net_failure;
3838 if (addr_inscope == 0) {
3839 net->dest_state = (SCTP_ADDR_REACHABLE |
3840 SCTP_ADDR_OUT_OF_SCOPE);
3842 if (from == SCTP_ADDR_IS_CONFIRMED)
3843 /* SCTP_ADDR_IS_CONFIRMED is passed by connect_x */
3844 net->dest_state = SCTP_ADDR_REACHABLE;
3846 net->dest_state = SCTP_ADDR_REACHABLE |
3847 SCTP_ADDR_UNCONFIRMED;
3850 * We set this to 0, the timer code knows that this means its an
3854 net->RTO_measured = 0;
3855 stcb->asoc.numnets++;
3856 *(&net->ref_count) = 1;
3857 net->tos_flowlabel = 0;
3858 if (SCTP_BASE_SYSCTL(sctp_udp_tunneling_for_client_enable)) {
3859 net->port = htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port));
3864 if (newaddr->sa_family == AF_INET)
3865 net->tos_flowlabel = stcb->asoc.default_tos;
3868 if (newaddr->sa_family == AF_INET6)
3869 net->tos_flowlabel = stcb->asoc.default_flowlabel;
3871 /* Init the timer structure */
3872 SCTP_OS_TIMER_INIT(&net->rxt_timer.timer);
3873 SCTP_OS_TIMER_INIT(&net->fr_timer.timer);
3874 SCTP_OS_TIMER_INIT(&net->pmtu_timer.timer);
3876 /* Now generate a route for this guy */
3878 /* KAME hack: embed scopeid */
3879 if (newaddr->sa_family == AF_INET6) {
3880 struct sockaddr_in6 *sin6;
3882 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3883 (void)sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone));
3884 sin6->sin6_scope_id = 0;
3887 SCTP_RTALLOC((sctp_route_t *) & net->ro, stcb->asoc.vrf_id);
3889 if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro)) {
3890 /* Get source address */
3891 net->ro._s_addr = sctp_source_address_selection(stcb->sctp_ep,
3893 (sctp_route_t *) & net->ro,
3897 /* Now get the interface MTU */
3898 if (net->ro._s_addr && net->ro._s_addr->ifn_p) {
3899 net->mtu = SCTP_GATHER_MTU_FROM_INTFC(net->ro._s_addr->ifn_p);
3903 if (net->mtu == 0) {
3905 net->mtu = SCTP_DEFAULT_MTU;
3909 rmtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, net->ro.ro_rt);
3912 * Start things off to match mtu of
3915 SCTP_SET_MTU_OF_ROUTE(&net->ro._l_addr.sa,
3916 net->ro.ro_rt, net->mtu);
3919 * we take the route mtu over the interface,
3920 * since the route may be leading out the
3921 * loopback, or a different interface.
3926 if (from == SCTP_ALLOC_ASOC) {
3927 stcb->asoc.smallest_mtu = net->mtu;
3930 net->mtu = stcb->asoc.smallest_mtu;
3933 if (newaddr->sa_family == AF_INET6) {
3934 struct sockaddr_in6 *sin6;
3936 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3937 (void)sa6_recoverscope(sin6);
3941 net->mtu -= sizeof(struct udphdr);
3943 if (stcb->asoc.smallest_mtu > net->mtu) {
3944 stcb->asoc.smallest_mtu = net->mtu;
3946 /* JRS - Use the congestion control given in the CC module */
3947 stcb->asoc.cc_functions.sctp_set_initial_cc_param(stcb, net);
3950 * CMT: CUC algo - set find_pseudo_cumack to TRUE (1) at beginning
3951 * of assoc (2005/06/27, iyengar@cis.udel.edu)
3953 net->find_pseudo_cumack = 1;
3954 net->find_rtx_pseudo_cumack = 1;
3955 net->src_addr_selected = 0;
3956 netfirst = TAILQ_FIRST(&stcb->asoc.nets);
3957 if (net->ro.ro_rt == NULL) {
3958 /* Since we have no route put it at the back */
3959 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
3960 } else if (netfirst == NULL) {
3961 /* We are the first one in the pool. */
3962 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
3963 } else if (netfirst->ro.ro_rt == NULL) {
3965 * First one has NO route. Place this one ahead of the first
3968 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
3969 } else if (net->ro.ro_rt->rt_ifp != netfirst->ro.ro_rt->rt_ifp) {
3971 * This one has a different interface than the one at the
3972 * top of the list. Place it ahead.
3974 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
3977 * Ok we have the same interface as the first one. Move
3978 * forward until we find either a) one with a NULL route...
3979 * insert ahead of that b) one with a different ifp.. insert
3980 * after that. c) end of the list.. insert at the tail.
3982 struct sctp_nets *netlook;
3985 netlook = TAILQ_NEXT(netfirst, sctp_next);
3986 if (netlook == NULL) {
3987 /* End of the list */
3988 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
3990 } else if (netlook->ro.ro_rt == NULL) {
3991 /* next one has NO route */
3992 TAILQ_INSERT_BEFORE(netfirst, net, sctp_next);
3994 } else if (netlook->ro.ro_rt->rt_ifp != net->ro.ro_rt->rt_ifp) {
3995 TAILQ_INSERT_AFTER(&stcb->asoc.nets, netlook,
4001 } while (netlook != NULL);
4004 /* got to have a primary set */
4005 if (stcb->asoc.primary_destination == 0) {
4006 stcb->asoc.primary_destination = net;
4007 } else if ((stcb->asoc.primary_destination->ro.ro_rt == NULL) &&
4009 ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) {
4010 /* No route to current primary adopt new primary */
4011 stcb->asoc.primary_destination = net;
4013 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, stcb->sctp_ep, stcb,
4015 /* Validate primary is first */
4016 net = TAILQ_FIRST(&stcb->asoc.nets);
4017 if ((net != stcb->asoc.primary_destination) &&
4018 (stcb->asoc.primary_destination)) {
4020 * first one on the list is NOT the primary sctp_cmpaddr()
4021 * is much more efficient if the primary is the first on the
4024 TAILQ_REMOVE(&stcb->asoc.nets,
4025 stcb->asoc.primary_destination, sctp_next);
4026 TAILQ_INSERT_HEAD(&stcb->asoc.nets,
4027 stcb->asoc.primary_destination, sctp_next);
4034 sctp_aloc_a_assoc_id(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
4037 struct sctpasochead *head;
4038 struct sctp_tcb *lstcb;
4040 SCTP_INP_WLOCK(inp);
4042 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
4044 SCTP_INP_WUNLOCK(inp);
4048 * We don't allow assoc id to be 0, this is needed otherwise if the
4049 * id were to wrap we would have issues with some socket options.
4051 if (inp->sctp_associd_counter == 0) {
4052 inp->sctp_associd_counter++;
4054 id = inp->sctp_associd_counter;
4055 inp->sctp_associd_counter++;
4056 lstcb = sctp_findasoc_ep_asocid_locked(inp, (sctp_assoc_t) id, 0);
4060 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
4061 LIST_INSERT_HEAD(head, stcb, sctp_tcbasocidhash);
4062 stcb->asoc.in_asocid_hash = 1;
4063 SCTP_INP_WUNLOCK(inp);
4068 * allocate an association and add it to the endpoint. The caller must be
4069 * careful to add all additional addresses once they are know right away or
4070 * else the assoc will be may experience a blackout scenario.
4073 sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
4074 int *error, uint32_t override_tag, uint32_t vrf_id,
4078 /* note the p argument is only valid in unbound sockets */
4080 struct sctp_tcb *stcb;
4081 struct sctp_association *asoc;
4082 struct sctpasochead *head;
4087 * Assumption made here: Caller has done a
4088 * sctp_findassociation_ep_addr(ep, addr's); to make sure the
4089 * address does not exist already.
4091 if (SCTP_BASE_INFO(ipi_count_asoc) >= SCTP_MAX_NUM_OF_ASOC) {
4092 /* Hit max assoc, sorry no more */
4093 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4097 if (firstaddr == NULL) {
4098 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4102 SCTP_INP_RLOCK(inp);
4103 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
4104 ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) ||
4105 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
4107 * If its in the TCP pool, its NOT allowed to create an
4108 * association. The parent listener needs to call
4109 * sctp_aloc_assoc.. or the one-2-many socket. If a peeled
4110 * off, or connected one does this.. its an error.
4112 SCTP_INP_RUNLOCK(inp);
4113 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4117 SCTPDBG(SCTP_DEBUG_PCB3, "Allocate an association for peer:");
4120 SCTPDBG_ADDR(SCTP_DEBUG_PCB3, firstaddr);
4121 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4122 ntohs(((struct sockaddr_in *)firstaddr)->sin_port));
4124 SCTPDBG(SCTP_DEBUG_PCB3, "None\n");
4126 #endif /* SCTP_DEBUG */
4127 if (firstaddr->sa_family == AF_INET) {
4128 struct sockaddr_in *sin;
4130 sin = (struct sockaddr_in *)firstaddr;
4131 if ((sin->sin_port == 0) || (sin->sin_addr.s_addr == 0)) {
4132 /* Invalid address */
4133 SCTP_INP_RUNLOCK(inp);
4134 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4138 rport = sin->sin_port;
4139 } else if (firstaddr->sa_family == AF_INET6) {
4140 struct sockaddr_in6 *sin6;
4142 sin6 = (struct sockaddr_in6 *)firstaddr;
4143 if ((sin6->sin6_port == 0) ||
4144 (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))) {
4145 /* Invalid address */
4146 SCTP_INP_RUNLOCK(inp);
4147 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4151 rport = sin6->sin6_port;
4153 /* not supported family type */
4154 SCTP_INP_RUNLOCK(inp);
4155 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4159 SCTP_INP_RUNLOCK(inp);
4160 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4162 * If you have not performed a bind, then we need to do the
4163 * ephemeral bind for you.
4165 if ((err = sctp_inpcb_bind(inp->sctp_socket,
4166 (struct sockaddr *)NULL,
4167 (struct sctp_ifa *)NULL,
4170 /* bind error, probably perm */
4175 stcb = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asoc), struct sctp_tcb);
4177 /* out of memory? */
4178 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
4182 SCTP_INCR_ASOC_COUNT();
4184 bzero(stcb, sizeof(*stcb));
4187 asoc->assoc_id = sctp_aloc_a_assoc_id(inp, stcb);
4188 SCTP_TCB_LOCK_INIT(stcb);
4189 SCTP_TCB_SEND_LOCK_INIT(stcb);
4190 stcb->rport = rport;
4191 /* setup back pointer's */
4192 stcb->sctp_ep = inp;
4193 stcb->sctp_socket = inp->sctp_socket;
4194 if ((err = sctp_init_asoc(inp, stcb, override_tag, vrf_id))) {
4196 SCTP_TCB_LOCK_DESTROY(stcb);
4197 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4198 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4199 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4200 SCTP_DECR_ASOC_COUNT();
4205 SCTP_INP_INFO_WLOCK();
4206 SCTP_INP_WLOCK(inp);
4207 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
4208 /* inpcb freed while alloc going on */
4209 SCTP_TCB_LOCK_DESTROY(stcb);
4210 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4211 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4212 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4213 SCTP_INP_WUNLOCK(inp);
4214 SCTP_INP_INFO_WUNLOCK();
4215 SCTP_DECR_ASOC_COUNT();
4216 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4220 SCTP_TCB_LOCK(stcb);
4222 /* now that my_vtag is set, add it to the hash */
4223 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))];
4224 /* put it in the bucket in the vtag hash of assoc's for the system */
4225 LIST_INSERT_HEAD(head, stcb, sctp_asocs);
4226 SCTP_INP_INFO_WUNLOCK();
4228 if ((err = sctp_add_remote_addr(stcb, firstaddr, SCTP_DO_SETSCOPE, SCTP_ALLOC_ASOC))) {
4229 /* failure.. memory error? */
4230 if (asoc->strmout) {
4231 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
4232 asoc->strmout = NULL;
4234 if (asoc->mapping_array) {
4235 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
4236 asoc->mapping_array = NULL;
4238 if (asoc->nr_mapping_array) {
4239 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
4240 asoc->nr_mapping_array = NULL;
4242 SCTP_DECR_ASOC_COUNT();
4243 SCTP_TCB_LOCK_DESTROY(stcb);
4244 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4245 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4246 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4247 SCTP_INP_WUNLOCK(inp);
4248 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4252 /* Init all the timers */
4253 SCTP_OS_TIMER_INIT(&asoc->hb_timer.timer);
4254 SCTP_OS_TIMER_INIT(&asoc->dack_timer.timer);
4255 SCTP_OS_TIMER_INIT(&asoc->strreset_timer.timer);
4256 SCTP_OS_TIMER_INIT(&asoc->asconf_timer.timer);
4257 SCTP_OS_TIMER_INIT(&asoc->shut_guard_timer.timer);
4258 SCTP_OS_TIMER_INIT(&asoc->autoclose_timer.timer);
4259 SCTP_OS_TIMER_INIT(&asoc->delayed_event_timer.timer);
4260 SCTP_OS_TIMER_INIT(&asoc->delete_prim_timer.timer);
4262 LIST_INSERT_HEAD(&inp->sctp_asoc_list, stcb, sctp_tcblist);
4263 /* now file the port under the hash as well */
4264 if (inp->sctp_tcbhash != NULL) {
4265 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(stcb->rport,
4266 inp->sctp_hashmark)];
4267 LIST_INSERT_HEAD(head, stcb, sctp_tcbhash);
4269 SCTP_INP_WUNLOCK(inp);
4270 SCTPDBG(SCTP_DEBUG_PCB1, "Association %p now allocated\n", stcb);
4276 sctp_remove_net(struct sctp_tcb *stcb, struct sctp_nets *net)
4278 struct sctp_association *asoc;
4282 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
4283 if (net == asoc->primary_destination) {
4285 struct sctp_nets *lnet;
4287 lnet = TAILQ_FIRST(&asoc->nets);
4289 * Mobility adaptation Ideally, if deleted destination is
4290 * the primary, it becomes a fast retransmission trigger by
4291 * the subsequent SET PRIMARY. (by micchie)
4293 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
4294 SCTP_MOBILITY_BASE) ||
4295 sctp_is_mobility_feature_on(stcb->sctp_ep,
4296 SCTP_MOBILITY_FASTHANDOFF)) {
4297 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: primary dst is deleting\n");
4298 if (asoc->deleted_primary != NULL) {
4299 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: deleted primary may be already stored\n");
4302 asoc->deleted_primary = net;
4303 atomic_add_int(&net->ref_count, 1);
4304 memset(&net->lastsa, 0, sizeof(net->lastsa));
4305 memset(&net->lastsv, 0, sizeof(net->lastsv));
4306 sctp_mobility_feature_on(stcb->sctp_ep,
4307 SCTP_MOBILITY_PRIM_DELETED);
4308 sctp_timer_start(SCTP_TIMER_TYPE_PRIM_DELETED,
4309 stcb->sctp_ep, stcb, NULL);
4312 /* Try to find a confirmed primary */
4313 asoc->primary_destination = sctp_find_alternate_net(stcb, lnet, 0);
4315 if (net == asoc->last_data_chunk_from) {
4317 asoc->last_data_chunk_from = TAILQ_FIRST(&asoc->nets);
4319 if (net == asoc->last_control_chunk_from) {
4321 asoc->last_control_chunk_from = NULL;
4323 sctp_free_remote_addr(net);
4327 * remove a remote endpoint address from an association, it will fail if the
4328 * address does not exist.
4331 sctp_del_remote_addr(struct sctp_tcb *stcb, struct sockaddr *remaddr)
4334 * Here we need to remove a remote address. This is quite simple, we
4335 * first find it in the list of address for the association
4336 * (tasoc->asoc.nets) and then if it is there, we do a LIST_REMOVE
4337 * on that item. Note we do not allow it to be removed if there are
4338 * no other addresses.
4340 struct sctp_association *asoc;
4341 struct sctp_nets *net, *nnet;
4345 /* locate the address */
4346 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
4347 if (net->ro._l_addr.sa.sa_family != remaddr->sa_family) {
4350 if (sctp_cmpaddr((struct sockaddr *)&net->ro._l_addr,
4352 /* we found the guy */
4353 if (asoc->numnets < 2) {
4354 /* Must have at LEAST two remote addresses */
4357 sctp_remove_net(stcb, net);
4367 sctp_delete_from_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4369 struct sctpvtaghead *chain;
4370 struct sctp_tagblock *twait_block;
4374 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4375 if (!LIST_EMPTY(chain)) {
4376 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4377 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4378 if ((twait_block->vtag_block[i].v_tag == tag) &&
4379 (twait_block->vtag_block[i].lport == lport) &&
4380 (twait_block->vtag_block[i].rport == rport)) {
4381 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4382 twait_block->vtag_block[i].v_tag = 0;
4383 twait_block->vtag_block[i].lport = 0;
4384 twait_block->vtag_block[i].rport = 0;
4396 sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4398 struct sctpvtaghead *chain;
4399 struct sctp_tagblock *twait_block;
4403 SCTP_INP_INFO_WLOCK();
4404 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4405 if (!LIST_EMPTY(chain)) {
4406 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4407 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4408 if ((twait_block->vtag_block[i].v_tag == tag) &&
4409 (twait_block->vtag_block[i].lport == lport) &&
4410 (twait_block->vtag_block[i].rport == rport)) {
4419 SCTP_INP_INFO_WUNLOCK();
4425 sctp_add_vtag_to_timewait(uint32_t tag, uint32_t time, uint16_t lport, uint16_t rport)
4427 struct sctpvtaghead *chain;
4428 struct sctp_tagblock *twait_block;
4436 (void)SCTP_GETTIME_TIMEVAL(&now);
4437 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4439 if (!LIST_EMPTY(chain)) {
4440 /* Block(s) present, lets find space, and expire on the fly */
4441 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4442 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4443 if ((twait_block->vtag_block[i].v_tag == 0) &&
4445 twait_block->vtag_block[i].tv_sec_at_expire =
4447 twait_block->vtag_block[i].v_tag = tag;
4448 twait_block->vtag_block[i].lport = lport;
4449 twait_block->vtag_block[i].rport = rport;
4451 } else if ((twait_block->vtag_block[i].v_tag) &&
4452 ((long)twait_block->vtag_block[i].tv_sec_at_expire < now.tv_sec)) {
4453 /* Audit expires this guy */
4454 twait_block->vtag_block[i].tv_sec_at_expire = 0;
4455 twait_block->vtag_block[i].v_tag = 0;
4456 twait_block->vtag_block[i].lport = 0;
4457 twait_block->vtag_block[i].rport = 0;
4459 /* Reuse it for my new tag */
4460 twait_block->vtag_block[i].tv_sec_at_expire = now.tv_sec + time;
4461 twait_block->vtag_block[i].v_tag = tag;
4462 twait_block->vtag_block[i].lport = lport;
4463 twait_block->vtag_block[i].rport = rport;
4470 * We only do up to the block where we can
4471 * place our tag for audits
4477 /* Need to add a new block to chain */
4479 SCTP_MALLOC(twait_block, struct sctp_tagblock *,
4480 sizeof(struct sctp_tagblock), SCTP_M_TIMW);
4481 if (twait_block == NULL) {
4483 panic("Can not alloc tagblock");
4487 memset(twait_block, 0, sizeof(struct sctp_tagblock));
4488 LIST_INSERT_HEAD(chain, twait_block, sctp_nxt_tagblock);
4489 twait_block->vtag_block[0].tv_sec_at_expire = now.tv_sec + time;
4490 twait_block->vtag_block[0].v_tag = tag;
4491 twait_block->vtag_block[0].lport = lport;
4492 twait_block->vtag_block[0].rport = rport;
4499 * Free the association after un-hashing the remote port. This
4500 * function ALWAYS returns holding NO LOCK on the stcb. It DOES
4501 * expect that the input to this function IS a locked TCB.
4502 * It will return 0, if it did NOT destroy the association (instead
4503 * it unlocks it. It will return NON-zero if it either destroyed the
4504 * association OR the association is already destroyed.
4507 sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_inpcbfree, int from_location)
4510 struct sctp_association *asoc;
4511 struct sctp_nets *net, *nnet;
4512 struct sctp_laddr *laddr, *naddr;
4513 struct sctp_tmit_chunk *chk, *nchk;
4514 struct sctp_asconf_addr *aparam, *naparam;
4515 struct sctp_asconf_ack *aack, *naack;
4516 struct sctp_stream_reset_list *strrst, *nstrrst;
4517 struct sctp_queued_to_read *sq, *nsq;
4518 struct sctp_stream_queue_pending *sp, *nsp;
4519 sctp_sharedkey_t *shared_key, *nshared_key;
4522 /* first, lets purge the entry from the hash table. */
4524 #ifdef SCTP_LOG_CLOSING
4525 sctp_log_closing(inp, stcb, 6);
4527 if (stcb->asoc.state == 0) {
4528 #ifdef SCTP_LOG_CLOSING
4529 sctp_log_closing(inp, NULL, 7);
4531 /* there is no asoc, really TSNH :-0 */
4535 if (stcb->freed_from_where == 0) {
4536 /* Only record the first place free happened from */
4537 stcb->freed_from_where = from_location;
4542 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4543 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4544 /* nothing around */
4547 so = inp->sctp_socket;
4550 * We used timer based freeing if a reader or writer is in the way.
4551 * So we first check if we are actually being called from a timer,
4552 * if so we abort early if a reader or writer is still in the way.
4554 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
4555 (from_inpcbfree == SCTP_NORMAL_PROC)) {
4557 * is it the timer driving us? if so are the reader/writers
4560 if (stcb->asoc.refcnt) {
4561 /* nope, reader or writer in the way */
4562 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4563 /* no asoc destroyed */
4564 SCTP_TCB_UNLOCK(stcb);
4565 #ifdef SCTP_LOG_CLOSING
4566 sctp_log_closing(inp, stcb, 8);
4571 /* now clean up any other timers */
4572 (void)SCTP_OS_TIMER_STOP(&asoc->hb_timer.timer);
4573 asoc->hb_timer.self = NULL;
4574 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4575 asoc->dack_timer.self = NULL;
4576 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4578 * For stream reset we don't blast this unless
4579 * it is a str-reset timer, it might be the
4580 * free-asoc timer which we DON'T want to
4583 if (asoc->strreset_timer.type == SCTP_TIMER_TYPE_STRRESET)
4584 asoc->strreset_timer.self = NULL;
4585 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4586 asoc->asconf_timer.self = NULL;
4587 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4588 asoc->autoclose_timer.self = NULL;
4589 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4590 asoc->shut_guard_timer.self = NULL;
4591 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4592 asoc->delayed_event_timer.self = NULL;
4593 /* Mobility adaptation */
4594 (void)SCTP_OS_TIMER_STOP(&asoc->delete_prim_timer.timer);
4595 asoc->delete_prim_timer.self = NULL;
4596 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4597 (void)SCTP_OS_TIMER_STOP(&net->fr_timer.timer);
4598 net->fr_timer.self = NULL;
4599 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4600 net->rxt_timer.self = NULL;
4601 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4602 net->pmtu_timer.self = NULL;
4604 /* Now the read queue needs to be cleaned up (only once) */
4605 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0) {
4606 stcb->asoc.state |= SCTP_STATE_ABOUT_TO_BE_FREED;
4607 SCTP_INP_READ_LOCK(inp);
4608 TAILQ_FOREACH(sq, &inp->read_queue, next) {
4609 if (sq->stcb == stcb) {
4610 sq->do_not_ref_stcb = 1;
4611 sq->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
4613 * If there is no end, there never will be
4616 if (sq->end_added == 0) {
4617 /* Held for PD-API clear that. */
4618 sq->pdapi_aborted = 1;
4619 sq->held_length = 0;
4620 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PDAPIEVNT) && (so != NULL)) {
4622 * Need to add a PD-API
4623 * aborted indication.
4624 * Setting the control_pdapi
4625 * assures that it will be
4626 * added right after this
4631 stcb->asoc.control_pdapi = sq;
4632 strseq = (sq->sinfo_stream << 16) | sq->sinfo_ssn;
4633 sctp_ulp_notify(SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION,
4635 SCTP_PARTIAL_DELIVERY_ABORTED,
4638 stcb->asoc.control_pdapi = NULL;
4641 /* Add an end to wake them */
4645 SCTP_INP_READ_UNLOCK(inp);
4646 if (stcb->block_entry) {
4647 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_PCB, ECONNRESET);
4648 stcb->block_entry->error = ECONNRESET;
4649 stcb->block_entry = NULL;
4652 if ((stcb->asoc.refcnt) || (stcb->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE)) {
4654 * Someone holds a reference OR the socket is unaccepted
4657 if ((stcb->asoc.refcnt) ||
4658 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4659 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4660 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4661 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4663 SCTP_TCB_UNLOCK(stcb);
4664 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4665 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4666 /* nothing around */
4669 /* Wake any reader/writers */
4670 sctp_sorwakeup(inp, so);
4671 sctp_sowwakeup(inp, so);
4673 #ifdef SCTP_LOG_CLOSING
4674 sctp_log_closing(inp, stcb, 9);
4676 /* no asoc destroyed */
4679 #ifdef SCTP_LOG_CLOSING
4680 sctp_log_closing(inp, stcb, 10);
4683 * When I reach here, no others want to kill the assoc yet.. and I
4684 * own the lock. Now its possible an abort comes in when I do the
4685 * lock exchange below to grab all the locks to do the final take
4686 * out. to prevent this we increment the count, which will start a
4687 * timer and blow out above thus assuring us that we hold exclusive
4688 * killing of the asoc. Note that after getting back the TCB lock we
4689 * will go ahead and increment the counter back up and stop any
4690 * timer a passing stranger may have started :-S
4692 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4693 atomic_add_int(&stcb->asoc.refcnt, 1);
4695 SCTP_TCB_UNLOCK(stcb);
4696 SCTP_INP_INFO_WLOCK();
4697 SCTP_INP_WLOCK(inp);
4698 SCTP_TCB_LOCK(stcb);
4700 /* Double check the GONE flag */
4701 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4702 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4703 /* nothing around */
4706 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
4707 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
4709 * For TCP type we need special handling when we are
4710 * connected. We also include the peel'ed off ones to.
4712 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4713 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CONNECTED;
4714 inp->sctp_flags |= SCTP_PCB_FLAGS_WAS_CONNECTED;
4717 if (so->so_rcv.sb_cc == 0) {
4718 so->so_state &= ~(SS_ISCONNECTING |
4719 SS_ISDISCONNECTING |
4723 socantrcvmore_locked(so);
4724 sctp_sowwakeup(inp, so);
4725 sctp_sorwakeup(inp, so);
4731 * Make it invalid too, that way if its about to run it will abort
4734 /* re-increment the lock */
4735 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4736 atomic_add_int(&stcb->asoc.refcnt, -1);
4738 if (stcb->asoc.refcnt) {
4739 stcb->asoc.state &= ~SCTP_STATE_IN_ACCEPT_QUEUE;
4740 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4741 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4742 SCTP_INP_INFO_WUNLOCK();
4743 SCTP_INP_WUNLOCK(inp);
4745 SCTP_TCB_UNLOCK(stcb);
4749 if (inp->sctp_tcbhash) {
4750 LIST_REMOVE(stcb, sctp_tcbhash);
4752 if (stcb->asoc.in_asocid_hash) {
4753 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4755 /* Now lets remove it from the list of ALL associations in the EP */
4756 LIST_REMOVE(stcb, sctp_tcblist);
4757 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4758 SCTP_INP_INCR_REF(inp);
4759 SCTP_INP_WUNLOCK(inp);
4761 /* pull from vtag hash */
4762 LIST_REMOVE(stcb, sctp_asocs);
4763 sctp_add_vtag_to_timewait(asoc->my_vtag, SCTP_BASE_SYSCTL(sctp_vtag_time_wait),
4764 inp->sctp_lport, stcb->rport);
4767 * Now restop the timers to be sure this is paranoia at is finest!
4769 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4770 (void)SCTP_OS_TIMER_STOP(&asoc->hb_timer.timer);
4771 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
4772 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
4773 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
4774 (void)SCTP_OS_TIMER_STOP(&asoc->shut_guard_timer.timer);
4775 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
4776 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
4777 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
4778 (void)SCTP_OS_TIMER_STOP(&net->fr_timer.timer);
4779 (void)SCTP_OS_TIMER_STOP(&net->rxt_timer.timer);
4780 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
4783 asoc->strreset_timer.type = SCTP_TIMER_TYPE_NONE;
4785 * The chunk lists and such SHOULD be empty but we check them just
4788 /* anything on the wheel needs to be removed */
4789 for (i = 0; i < asoc->streamoutcnt; i++) {
4790 struct sctp_stream_out *outs;
4792 outs = &asoc->strmout[i];
4793 /* now clean up any chunks here */
4794 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
4795 TAILQ_REMOVE(&outs->outqueue, sp, next);
4798 /* Still an open socket - report */
4799 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
4800 SCTP_NOTIFY_DATAGRAM_UNSENT,
4801 (void *)sp, SCTP_SO_LOCKED);
4804 sctp_m_freem(sp->data);
4806 sp->tail_mbuf = NULL;
4810 sctp_free_remote_addr(sp->net);
4813 sctp_free_spbufspace(stcb, asoc, sp);
4814 if (sp->holds_key_ref)
4815 sctp_auth_key_release(stcb, sp->auth_keyid);
4816 /* Free the zone stuff */
4817 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_strmoq), sp);
4818 SCTP_DECR_STRMOQ_COUNT();
4819 /* sa_ignore FREED_MEMORY */
4822 /* sa_ignore FREED_MEMORY */
4823 TAILQ_FOREACH_SAFE(strrst, &asoc->resetHead, next_resp, nstrrst) {
4824 TAILQ_REMOVE(&asoc->resetHead, strrst, next_resp);
4825 SCTP_FREE(strrst, SCTP_M_STRESET);
4827 TAILQ_FOREACH_SAFE(sq, &asoc->pending_reply_queue, next, nsq) {
4828 TAILQ_REMOVE(&asoc->pending_reply_queue, sq, next);
4830 sctp_m_freem(sq->data);
4833 sctp_free_remote_addr(sq->whoFrom);
4836 /* Free the ctl entry */
4837 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), sq);
4838 SCTP_DECR_READQ_COUNT();
4839 /* sa_ignore FREED_MEMORY */
4841 TAILQ_FOREACH_SAFE(chk, &asoc->free_chunks, sctp_next, nchk) {
4842 TAILQ_REMOVE(&asoc->free_chunks, chk, sctp_next);
4844 sctp_m_freem(chk->data);
4847 if (chk->holds_key_ref)
4848 sctp_auth_key_release(stcb, chk->auth_keyid);
4849 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4850 SCTP_DECR_CHK_COUNT();
4851 atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1);
4852 asoc->free_chunk_cnt--;
4853 /* sa_ignore FREED_MEMORY */
4855 /* pending send queue SHOULD be empty */
4856 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
4857 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
4860 /* Still a socket? */
4861 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb,
4862 SCTP_NOTIFY_DATAGRAM_UNSENT, chk, SCTP_SO_LOCKED);
4865 sctp_m_freem(chk->data);
4869 if (chk->holds_key_ref)
4870 sctp_auth_key_release(stcb, chk->auth_keyid);
4872 sctp_free_remote_addr(chk->whoTo);
4875 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4876 SCTP_DECR_CHK_COUNT();
4877 /* sa_ignore FREED_MEMORY */
4879 /* sent queue SHOULD be empty */
4880 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
4881 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
4884 /* Still a socket? */
4885 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb,
4886 SCTP_NOTIFY_DATAGRAM_SENT, chk, SCTP_SO_LOCKED);
4889 sctp_m_freem(chk->data);
4893 if (chk->holds_key_ref)
4894 sctp_auth_key_release(stcb, chk->auth_keyid);
4895 sctp_free_remote_addr(chk->whoTo);
4896 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4897 SCTP_DECR_CHK_COUNT();
4898 /* sa_ignore FREED_MEMORY */
4900 /* control queue MAY not be empty */
4901 TAILQ_FOREACH_SAFE(chk, &asoc->control_send_queue, sctp_next, nchk) {
4902 TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next);
4904 sctp_m_freem(chk->data);
4907 if (chk->holds_key_ref)
4908 sctp_auth_key_release(stcb, chk->auth_keyid);
4909 sctp_free_remote_addr(chk->whoTo);
4910 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4911 SCTP_DECR_CHK_COUNT();
4912 /* sa_ignore FREED_MEMORY */
4914 /* ASCONF queue MAY not be empty */
4915 TAILQ_FOREACH_SAFE(chk, &asoc->asconf_send_queue, sctp_next, nchk) {
4916 TAILQ_REMOVE(&asoc->asconf_send_queue, chk, sctp_next);
4918 sctp_m_freem(chk->data);
4921 if (chk->holds_key_ref)
4922 sctp_auth_key_release(stcb, chk->auth_keyid);
4923 sctp_free_remote_addr(chk->whoTo);
4924 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4925 SCTP_DECR_CHK_COUNT();
4926 /* sa_ignore FREED_MEMORY */
4928 TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) {
4929 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
4931 sctp_m_freem(chk->data);
4934 if (chk->holds_key_ref)
4935 sctp_auth_key_release(stcb, chk->auth_keyid);
4936 sctp_free_remote_addr(chk->whoTo);
4937 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4938 SCTP_DECR_CHK_COUNT();
4939 /* sa_ignore FREED_MEMORY */
4942 if (asoc->mapping_array) {
4943 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
4944 asoc->mapping_array = NULL;
4946 if (asoc->nr_mapping_array) {
4947 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
4948 asoc->nr_mapping_array = NULL;
4950 /* the stream outs */
4951 if (asoc->strmout) {
4952 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
4953 asoc->strmout = NULL;
4955 asoc->strm_realoutsize = asoc->streamoutcnt = 0;
4957 struct sctp_queued_to_read *ctl, *nctl;
4959 for (i = 0; i < asoc->streamincnt; i++) {
4960 TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[i].inqueue, next, nctl) {
4961 TAILQ_REMOVE(&asoc->strmin[i].inqueue, ctl, next);
4962 sctp_free_remote_addr(ctl->whoFrom);
4964 sctp_m_freem(ctl->data);
4968 * We don't free the address here since all
4969 * the net's were freed above.
4971 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
4972 SCTP_DECR_READQ_COUNT();
4975 SCTP_FREE(asoc->strmin, SCTP_M_STRMI);
4976 asoc->strmin = NULL;
4978 asoc->streamincnt = 0;
4979 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
4981 if (SCTP_BASE_INFO(ipi_count_raddr) == 0) {
4982 panic("no net's left alloc'ed, or list points to itself");
4985 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
4986 sctp_free_remote_addr(net);
4988 LIST_FOREACH_SAFE(laddr, &asoc->sctp_restricted_addrs, sctp_nxt_addr, naddr) {
4989 /* sa_ignore FREED_MEMORY */
4990 sctp_remove_laddr(laddr);
4993 /* pending asconf (address) parameters */
4994 TAILQ_FOREACH_SAFE(aparam, &asoc->asconf_queue, next, naparam) {
4995 /* sa_ignore FREED_MEMORY */
4996 TAILQ_REMOVE(&asoc->asconf_queue, aparam, next);
4997 SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
4999 TAILQ_FOREACH_SAFE(aack, &asoc->asconf_ack_sent, next, naack) {
5000 /* sa_ignore FREED_MEMORY */
5001 TAILQ_REMOVE(&asoc->asconf_ack_sent, aack, next);
5002 if (aack->data != NULL) {
5003 sctp_m_freem(aack->data);
5005 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), aack);
5007 /* clean up auth stuff */
5008 if (asoc->local_hmacs)
5009 sctp_free_hmaclist(asoc->local_hmacs);
5010 if (asoc->peer_hmacs)
5011 sctp_free_hmaclist(asoc->peer_hmacs);
5013 if (asoc->local_auth_chunks)
5014 sctp_free_chunklist(asoc->local_auth_chunks);
5015 if (asoc->peer_auth_chunks)
5016 sctp_free_chunklist(asoc->peer_auth_chunks);
5018 sctp_free_authinfo(&asoc->authinfo);
5020 LIST_FOREACH_SAFE(shared_key, &asoc->shared_keys, next, nshared_key) {
5021 LIST_REMOVE(shared_key, next);
5022 sctp_free_sharedkey(shared_key);
5023 /* sa_ignore FREED_MEMORY */
5026 /* Insert new items here :> */
5028 /* Get rid of LOCK */
5029 SCTP_TCB_LOCK_DESTROY(stcb);
5030 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
5031 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5032 SCTP_INP_INFO_WUNLOCK();
5033 SCTP_INP_RLOCK(inp);
5035 #ifdef SCTP_TRACK_FREED_ASOCS
5036 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5037 /* now clean up the tasoc itself */
5038 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5039 SCTP_DECR_ASOC_COUNT();
5041 LIST_INSERT_HEAD(&inp->sctp_asoc_free_list, stcb, sctp_tcblist);
5044 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5045 SCTP_DECR_ASOC_COUNT();
5047 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5048 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5050 * If its NOT the inp_free calling us AND sctp_close
5051 * as been called, we call back...
5053 SCTP_INP_RUNLOCK(inp);
5055 * This will start the kill timer (if we are the
5056 * last one) since we hold an increment yet. But
5057 * this is the only safe way to do this since
5058 * otherwise if the socket closes at the same time
5059 * we are here we might collide in the cleanup.
5061 sctp_inpcb_free(inp,
5062 SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
5063 SCTP_CALLED_DIRECTLY_NOCMPSET);
5064 SCTP_INP_DECR_REF(inp);
5067 /* The socket is still open. */
5068 SCTP_INP_DECR_REF(inp);
5071 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5072 SCTP_INP_RUNLOCK(inp);
5075 /* destroyed the asoc */
5076 #ifdef SCTP_LOG_CLOSING
5077 sctp_log_closing(inp, NULL, 11);
5085 * determine if a destination is "reachable" based upon the addresses bound
5086 * to the current endpoint (e.g. only v4 or v6 currently bound)
5089 * FIX: if we allow assoc-level bindx(), then this needs to be fixed to use
5090 * assoc level v4/v6 flags, as the assoc *may* not have the same address
5091 * types bound as its endpoint
5094 sctp_destination_is_reachable(struct sctp_tcb *stcb, struct sockaddr *destaddr)
5096 struct sctp_inpcb *inp;
5100 * No locks here, the TCB, in all cases is already locked and an
5101 * assoc is up. There is either a INP lock by the caller applied (in
5102 * asconf case when deleting an address) or NOT in the HB case,
5103 * however if HB then the INP increment is up and the INP will not
5104 * be removed (on top of the fact that we have a TCB lock). So we
5105 * only want to read the sctp_flags, which is either bound-all or
5106 * not.. no protection needed since once an assoc is up you can't be
5107 * changing your binding.
5109 inp = stcb->sctp_ep;
5110 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5111 /* if bound all, destination is not restricted */
5113 * RRS: Question during lock work: Is this correct? If you
5114 * are bound-all you still might need to obey the V4--V6
5115 * flags??? IMO this bound-all stuff needs to be removed!
5119 /* NOTE: all "scope" checks are done when local addresses are added */
5120 if (destaddr->sa_family == AF_INET6) {
5121 answer = inp->ip_inp.inp.inp_vflag & INP_IPV6;
5122 } else if (destaddr->sa_family == AF_INET) {
5123 answer = inp->ip_inp.inp.inp_vflag & INP_IPV4;
5125 /* invalid family, so it's unreachable */
5132 * update the inp_vflags on an endpoint
5135 sctp_update_ep_vflag(struct sctp_inpcb *inp)
5137 struct sctp_laddr *laddr;
5139 /* first clear the flag */
5140 inp->ip_inp.inp.inp_vflag = 0;
5141 /* set the flag based on addresses on the ep list */
5142 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5143 if (laddr->ifa == NULL) {
5144 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
5148 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
5151 if (laddr->ifa->address.sa.sa_family == AF_INET6) {
5152 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5153 } else if (laddr->ifa->address.sa.sa_family == AF_INET) {
5154 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5160 * Add the address to the endpoint local address list There is nothing to be
5161 * done if we are bound to all addresses
5164 sctp_add_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa, uint32_t action)
5166 struct sctp_laddr *laddr;
5171 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5172 /* You are already bound to all. You have it already */
5175 if (ifa->address.sa.sa_family == AF_INET6) {
5176 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5177 /* Can't bind a non-useable addr. */
5181 /* first, is it already present? */
5182 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5183 if (laddr->ifa == ifa) {
5190 /* Not in the ep list */
5191 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, action);
5195 /* update inp_vflag flags */
5196 if (ifa->address.sa.sa_family == AF_INET6) {
5197 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5198 } else if (ifa->address.sa.sa_family == AF_INET) {
5199 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5207 * select a new (hopefully reachable) destination net (should only be used
5208 * when we deleted an ep addr that is the only usable source address to reach
5209 * the destination net)
5212 sctp_select_primary_destination(struct sctp_tcb *stcb)
5214 struct sctp_nets *net;
5216 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5217 /* for now, we'll just pick the first reachable one we find */
5218 if (net->dest_state & SCTP_ADDR_UNCONFIRMED)
5220 if (sctp_destination_is_reachable(stcb,
5221 (struct sockaddr *)&net->ro._l_addr)) {
5222 /* found a reachable destination */
5223 stcb->asoc.primary_destination = net;
5226 /* I can't there from here! ...we're gonna die shortly... */
5231 * Delete the address from the endpoint local address list There is nothing
5232 * to be done if we are bound to all addresses
5235 sctp_del_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa)
5237 struct sctp_laddr *laddr;
5241 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5242 /* You are already bound to all. You have it already */
5245 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5246 if (laddr->ifa == ifa) {
5251 if (fnd && (inp->laddr_count < 2)) {
5252 /* can't delete unless there are at LEAST 2 addresses */
5257 * clean up any use of this address go through our
5258 * associations and clear any last_used_address that match
5259 * this one for each assoc, see if a new primary_destination
5262 struct sctp_tcb *stcb;
5264 /* clean up "next_addr_touse" */
5265 if (inp->next_addr_touse == laddr)
5266 /* delete this address */
5267 inp->next_addr_touse = NULL;
5269 /* clean up "last_used_address" */
5270 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
5271 struct sctp_nets *net;
5273 SCTP_TCB_LOCK(stcb);
5274 if (stcb->asoc.last_used_address == laddr)
5275 /* delete this address */
5276 stcb->asoc.last_used_address = NULL;
5278 * Now spin through all the nets and purge any ref
5281 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5282 if (net->ro._s_addr &&
5283 (net->ro._s_addr->ifa == laddr->ifa)) {
5284 /* Yep, purge src address selected */
5287 /* delete this address if cached */
5291 net->ro.ro_rt = NULL;
5293 sctp_free_ifa(net->ro._s_addr);
5294 net->ro._s_addr = NULL;
5295 net->src_addr_selected = 0;
5298 SCTP_TCB_UNLOCK(stcb);
5299 } /* for each tcb */
5300 /* remove it from the ep list */
5301 sctp_remove_laddr(laddr);
5303 /* update inp_vflag flags */
5304 sctp_update_ep_vflag(inp);
5310 * Add the address to the TCB local address restricted list.
5311 * This is a "pending" address list (eg. addresses waiting for an
5312 * ASCONF-ACK response) and cannot be used as a valid source address.
5315 sctp_add_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5317 struct sctp_inpcb *inp;
5318 struct sctp_laddr *laddr;
5319 struct sctpladdr *list;
5322 * Assumes TCB is locked.. and possibly the INP. May need to
5323 * confirm/fix that if we need it and is not the case.
5325 list = &stcb->asoc.sctp_restricted_addrs;
5327 inp = stcb->sctp_ep;
5328 if (ifa->address.sa.sa_family == AF_INET6) {
5329 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5330 /* Can't bind a non-existent addr. */
5334 /* does the address already exist? */
5335 LIST_FOREACH(laddr, list, sctp_nxt_addr) {
5336 if (laddr->ifa == ifa) {
5341 /* add to the list */
5342 (void)sctp_insert_laddr(list, ifa, 0);
5347 * insert an laddr entry with the given ifa for the desired list
5350 sctp_insert_laddr(struct sctpladdr *list, struct sctp_ifa *ifa, uint32_t act)
5352 struct sctp_laddr *laddr;
5354 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
5355 if (laddr == NULL) {
5356 /* out of memory? */
5357 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
5360 SCTP_INCR_LADDR_COUNT();
5361 bzero(laddr, sizeof(*laddr));
5362 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
5364 laddr->action = act;
5365 atomic_add_int(&ifa->refcount, 1);
5367 LIST_INSERT_HEAD(list, laddr, sctp_nxt_addr);
5373 * Remove an laddr entry from the local address list (on an assoc)
5376 sctp_remove_laddr(struct sctp_laddr *laddr)
5379 /* remove from the list */
5380 LIST_REMOVE(laddr, sctp_nxt_addr);
5381 sctp_free_ifa(laddr->ifa);
5382 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), laddr);
5383 SCTP_DECR_LADDR_COUNT();
5387 * Remove a local address from the TCB local address restricted list
5390 sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5392 struct sctp_inpcb *inp;
5393 struct sctp_laddr *laddr;
5396 * This is called by asconf work. It is assumed that a) The TCB is
5397 * locked and b) The INP is locked. This is true in as much as I can
5398 * trace through the entry asconf code where I did these locks.
5399 * Again, the ASCONF code is a bit different in that it does lock
5400 * the INP during its work often times. This must be since we don't
5401 * want other proc's looking up things while what they are looking
5402 * up is changing :-D
5405 inp = stcb->sctp_ep;
5406 /* if subset bound and don't allow ASCONF's, can't delete last */
5407 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) &&
5408 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
5409 if (stcb->sctp_ep->laddr_count < 2) {
5410 /* can't delete last address */
5414 LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) {
5415 /* remove the address if it exists */
5416 if (laddr->ifa == NULL)
5418 if (laddr->ifa == ifa) {
5419 sctp_remove_laddr(laddr);
5424 /* address not found! */
5429 * Temporarily remove for __APPLE__ until we use the Tiger equivalents
5432 static int sctp_max_number_of_assoc = SCTP_MAX_NUM_OF_ASOC;
5433 static int sctp_scale_up_for_address = SCTP_SCALE_FOR_ADDR;
5439 * SCTP initialization for the PCB structures should be called by
5440 * the sctp_init() funciton.
5445 if (SCTP_BASE_VAR(sctp_pcb_initialized) != 0) {
5446 /* error I was called twice */
5449 SCTP_BASE_VAR(sctp_pcb_initialized) = 1;
5451 #if defined(SCTP_LOCAL_TRACE_BUF)
5452 bzero(&SCTP_BASE_SYSCTL(sctp_log), sizeof(struct sctp_log));
5454 (void)SCTP_GETTIME_TIMEVAL(&tv);
5455 #if defined(__FreeBSD__) && defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5456 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_sec = (uint32_t) tv.tv_sec;
5457 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_usec = (uint32_t) tv.tv_usec;
5459 SCTP_BASE_STAT(sctps_discontinuitytime).tv_sec = (uint32_t) tv.tv_sec;
5460 SCTP_BASE_STAT(sctps_discontinuitytime).tv_usec = (uint32_t) tv.tv_usec;
5462 /* init the empty list of (All) Endpoints */
5463 LIST_INIT(&SCTP_BASE_INFO(listhead));
5466 /* init the hash table of endpoints */
5467 TUNABLE_INT_FETCH("net.inet.sctp.tcbhashsize", &SCTP_BASE_SYSCTL(sctp_hashtblsize));
5468 TUNABLE_INT_FETCH("net.inet.sctp.pcbhashsize", &SCTP_BASE_SYSCTL(sctp_pcbtblsize));
5469 TUNABLE_INT_FETCH("net.inet.sctp.chunkscale", &SCTP_BASE_SYSCTL(sctp_chunkscale));
5470 SCTP_BASE_INFO(sctp_asochash) = SCTP_HASH_INIT((SCTP_BASE_SYSCTL(sctp_hashtblsize) * 31),
5471 &SCTP_BASE_INFO(hashasocmark));
5472 SCTP_BASE_INFO(sctp_ephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5473 &SCTP_BASE_INFO(hashmark));
5474 SCTP_BASE_INFO(sctp_tcpephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5475 &SCTP_BASE_INFO(hashtcpmark));
5476 SCTP_BASE_INFO(hashtblsize) = SCTP_BASE_SYSCTL(sctp_hashtblsize);
5479 SCTP_BASE_INFO(sctp_vrfhash) = SCTP_HASH_INIT(SCTP_SIZE_OF_VRF_HASH,
5480 &SCTP_BASE_INFO(hashvrfmark));
5482 SCTP_BASE_INFO(vrf_ifn_hash) = SCTP_HASH_INIT(SCTP_VRF_IFN_HASH_SIZE,
5483 &SCTP_BASE_INFO(vrf_ifn_hashmark));
5484 /* init the zones */
5486 * FIX ME: Should check for NULL returns, but if it does fail we are
5487 * doomed to panic anyways... add later maybe.
5489 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_ep), "sctp_ep",
5490 sizeof(struct sctp_inpcb), maxsockets);
5492 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asoc), "sctp_asoc",
5493 sizeof(struct sctp_tcb), sctp_max_number_of_assoc);
5495 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_laddr), "sctp_laddr",
5496 sizeof(struct sctp_laddr),
5497 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5499 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_net), "sctp_raddr",
5500 sizeof(struct sctp_nets),
5501 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5503 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_chunk), "sctp_chunk",
5504 sizeof(struct sctp_tmit_chunk),
5505 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5507 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_readq), "sctp_readq",
5508 sizeof(struct sctp_queued_to_read),
5509 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5511 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_strmoq), "sctp_stream_msg_out",
5512 sizeof(struct sctp_stream_queue_pending),
5513 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5515 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf), "sctp_asconf",
5516 sizeof(struct sctp_asconf),
5517 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5519 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf_ack), "sctp_asconf_ack",
5520 sizeof(struct sctp_asconf_ack),
5521 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5524 /* Master Lock INIT for info structure */
5525 SCTP_INP_INFO_LOCK_INIT();
5526 SCTP_STATLOG_INIT_LOCK();
5528 SCTP_IPI_COUNT_INIT();
5529 SCTP_IPI_ADDR_INIT();
5530 #ifdef SCTP_PACKET_LOGGING
5531 SCTP_IP_PKTLOG_INIT();
5533 LIST_INIT(&SCTP_BASE_INFO(addr_wq));
5535 SCTP_WQ_ADDR_INIT();
5536 /* not sure if we need all the counts */
5537 SCTP_BASE_INFO(ipi_count_ep) = 0;
5538 /* assoc/tcb zone info */
5539 SCTP_BASE_INFO(ipi_count_asoc) = 0;
5540 /* local addrlist zone info */
5541 SCTP_BASE_INFO(ipi_count_laddr) = 0;
5542 /* remote addrlist zone info */
5543 SCTP_BASE_INFO(ipi_count_raddr) = 0;
5545 SCTP_BASE_INFO(ipi_count_chunk) = 0;
5547 /* socket queue zone info */
5548 SCTP_BASE_INFO(ipi_count_readq) = 0;
5550 /* stream out queue cont */
5551 SCTP_BASE_INFO(ipi_count_strmoq) = 0;
5553 SCTP_BASE_INFO(ipi_free_strmoq) = 0;
5554 SCTP_BASE_INFO(ipi_free_chunks) = 0;
5556 SCTP_OS_TIMER_INIT(&SCTP_BASE_INFO(addr_wq_timer.timer));
5558 /* Init the TIMEWAIT list */
5559 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5560 LIST_INIT(&SCTP_BASE_INFO(vtag_timewait)[i]);
5563 sctp_startup_iterator();
5566 * INIT the default VRF which for BSD is the only one, other O/S's
5567 * may have more. But initially they must start with one and then
5568 * add the VRF's as addresses are added.
5570 sctp_init_vrf_list(SCTP_DEFAULT_VRF);
5575 * Assumes that the SCTP_BASE_INFO() lock is NOT held.
5578 sctp_pcb_finish(void)
5580 struct sctp_vrflist *vrf_bucket;
5581 struct sctp_vrf *vrf, *nvrf;
5582 struct sctp_ifn *ifn, *nifn;
5583 struct sctp_ifa *ifa, *nifa;
5584 struct sctpvtaghead *chain;
5585 struct sctp_tagblock *twait_block, *prev_twait_block;
5586 struct sctp_laddr *wi, *nwi;
5590 * Free BSD the it thread never exits but we do clean up. The only
5591 * way freebsd reaches here if we have VRF's but we still add the
5592 * ifdef to make it compile on old versions.
5595 struct sctp_iterator *it, *nit;
5597 SCTP_IPI_ITERATOR_WQ_LOCK();
5598 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
5599 if (it->vn != curvnet) {
5602 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
5603 if (it->function_atend != NULL) {
5604 (*it->function_atend) (it->pointer, it->val);
5606 SCTP_FREE(it, SCTP_M_ITER);
5608 SCTP_IPI_ITERATOR_WQ_UNLOCK();
5609 SCTP_ITERATOR_LOCK();
5610 if ((sctp_it_ctl.cur_it) &&
5611 (sctp_it_ctl.cur_it->vn == curvnet)) {
5612 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
5614 SCTP_ITERATOR_UNLOCK();
5617 SCTP_OS_TIMER_STOP(&SCTP_BASE_INFO(addr_wq_timer.timer));
5618 SCTP_WQ_ADDR_LOCK();
5619 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
5620 LIST_REMOVE(wi, sctp_nxt_addr);
5621 SCTP_DECR_LADDR_COUNT();
5622 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), wi);
5624 SCTP_WQ_ADDR_UNLOCK();
5627 * free the vrf/ifn/ifa lists and hashes (be sure address monitor is
5630 vrf_bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(SCTP_DEFAULT_VRFID & SCTP_BASE_INFO(hashvrfmark))];
5631 LIST_FOREACH_SAFE(vrf, vrf_bucket, next_vrf, nvrf) {
5632 LIST_FOREACH_SAFE(ifn, &vrf->ifnlist, next_ifn, nifn) {
5633 LIST_FOREACH_SAFE(ifa, &ifn->ifalist, next_ifa, nifa) {
5635 LIST_REMOVE(ifa, next_bucket);
5636 LIST_REMOVE(ifa, next_ifa);
5637 SCTP_FREE(ifa, SCTP_M_IFA);
5640 LIST_REMOVE(ifn, next_bucket);
5641 LIST_REMOVE(ifn, next_ifn);
5642 SCTP_FREE(ifn, SCTP_M_IFN);
5644 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
5646 LIST_REMOVE(vrf, next_vrf);
5647 SCTP_FREE(vrf, SCTP_M_VRF);
5649 /* free the vrf hashes */
5650 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_vrfhash), SCTP_BASE_INFO(hashvrfmark));
5651 SCTP_HASH_FREE(SCTP_BASE_INFO(vrf_ifn_hash), SCTP_BASE_INFO(vrf_ifn_hashmark));
5654 * free the TIMEWAIT list elements malloc'd in the function
5655 * sctp_add_vtag_to_timewait()...
5657 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5658 chain = &SCTP_BASE_INFO(vtag_timewait)[i];
5659 if (!LIST_EMPTY(chain)) {
5660 prev_twait_block = NULL;
5661 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
5662 if (prev_twait_block) {
5663 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
5665 prev_twait_block = twait_block;
5667 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
5671 /* free the locks and mutexes */
5672 #ifdef SCTP_PACKET_LOGGING
5673 SCTP_IP_PKTLOG_DESTROY();
5675 SCTP_IPI_ADDR_DESTROY();
5676 SCTP_STATLOG_DESTROY();
5677 SCTP_INP_INFO_LOCK_DESTROY();
5679 SCTP_WQ_ADDR_DESTROY();
5681 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_ep));
5682 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asoc));
5683 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_laddr));
5684 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_net));
5685 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_chunk));
5686 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_readq));
5687 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_strmoq));
5688 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf));
5689 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf_ack));
5690 /* Get rid of other stuff to */
5691 if (SCTP_BASE_INFO(sctp_asochash) != NULL)
5692 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_asochash), SCTP_BASE_INFO(hashasocmark));
5693 if (SCTP_BASE_INFO(sctp_ephash) != NULL)
5694 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_ephash), SCTP_BASE_INFO(hashmark));
5695 if (SCTP_BASE_INFO(sctp_tcpephash) != NULL)
5696 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_tcpephash), SCTP_BASE_INFO(hashtcpmark));
5702 sctp_load_addresses_from_init(struct sctp_tcb *stcb, struct mbuf *m,
5703 int iphlen, int offset, int limit, struct sctphdr *sh,
5704 struct sockaddr *altsa)
5707 * grub through the INIT pulling addresses and loading them to the
5708 * nets structure in the asoc. The from address in the mbuf should
5709 * also be loaded (if it is not already). This routine can be called
5710 * with either INIT or INIT-ACK's as long as the m points to the IP
5711 * packet and the offset points to the beginning of the parameters.
5713 struct sctp_inpcb *inp, *l_inp;
5714 struct sctp_nets *net, *nnet, *net_tmp;
5716 struct sctp_paramhdr *phdr, parm_buf;
5717 struct sctp_tcb *stcb_tmp;
5718 uint16_t ptype, plen;
5719 struct sockaddr *sa;
5720 struct sockaddr_storage dest_store;
5721 struct sockaddr *local_sa = (struct sockaddr *)&dest_store;
5722 struct sockaddr_in sin;
5723 struct sockaddr_in6 sin6;
5724 uint8_t random_store[SCTP_PARAM_BUFFER_SIZE];
5725 struct sctp_auth_random *p_random = NULL;
5726 uint16_t random_len = 0;
5727 uint8_t hmacs_store[SCTP_PARAM_BUFFER_SIZE];
5728 struct sctp_auth_hmac_algo *hmacs = NULL;
5729 uint16_t hmacs_len = 0;
5730 uint8_t saw_asconf = 0;
5731 uint8_t saw_asconf_ack = 0;
5732 uint8_t chunks_store[SCTP_PARAM_BUFFER_SIZE];
5733 struct sctp_auth_chunk_list *chunks = NULL;
5734 uint16_t num_chunks = 0;
5735 sctp_key_t *new_key;
5737 int got_random = 0, got_hmacs = 0, got_chklist = 0;
5739 /* First get the destination address setup too. */
5740 memset(&sin, 0, sizeof(sin));
5741 memset(&sin6, 0, sizeof(sin6));
5743 sin.sin_family = AF_INET;
5744 sin.sin_len = sizeof(sin);
5745 sin.sin_port = stcb->rport;
5747 sin6.sin6_family = AF_INET6;
5748 sin6.sin6_len = sizeof(struct sockaddr_in6);
5749 sin6.sin6_port = stcb->rport;
5750 if (altsa == NULL) {
5751 iph = mtod(m, struct ip *);
5752 switch (iph->ip_v) {
5756 struct sockaddr_in *sin_2;
5758 sin_2 = (struct sockaddr_in *)(local_sa);
5759 memset(sin_2, 0, sizeof(sin));
5760 sin_2->sin_family = AF_INET;
5761 sin_2->sin_len = sizeof(sin);
5762 sin_2->sin_port = sh->dest_port;
5763 sin_2->sin_addr.s_addr = iph->ip_dst.s_addr;
5764 sin.sin_addr = iph->ip_src;
5765 sa = (struct sockaddr *)&sin;
5769 case IPV6_VERSION >> 4:
5772 struct ip6_hdr *ip6;
5773 struct sockaddr_in6 *sin6_2;
5775 ip6 = mtod(m, struct ip6_hdr *);
5776 sin6_2 = (struct sockaddr_in6 *)(local_sa);
5777 memset(sin6_2, 0, sizeof(sin6));
5778 sin6_2->sin6_family = AF_INET6;
5779 sin6_2->sin6_len = sizeof(struct sockaddr_in6);
5780 sin6_2->sin6_port = sh->dest_port;
5781 sin6.sin6_addr = ip6->ip6_src;
5782 sa = (struct sockaddr *)&sin6;
5792 * For cookies we use the src address NOT from the packet
5793 * but from the original INIT
5797 /* Turn off ECN until we get through all params */
5798 stcb->asoc.ecn_allowed = 0;
5799 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5800 /* mark all addresses that we have currently on the list */
5801 net->dest_state |= SCTP_ADDR_NOT_IN_ASSOC;
5803 /* does the source address already exist? if so skip it */
5804 l_inp = inp = stcb->sctp_ep;
5806 atomic_add_int(&stcb->asoc.refcnt, 1);
5807 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net_tmp, local_sa, stcb);
5808 atomic_add_int(&stcb->asoc.refcnt, -1);
5810 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) || inp == NULL) {
5811 /* we must add the source address */
5812 /* no scope set here since we have a tcb already. */
5813 if ((sa->sa_family == AF_INET) &&
5814 (stcb->asoc.ipv4_addr_legal)) {
5815 if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_2)) {
5818 } else if ((sa->sa_family == AF_INET6) &&
5819 (stcb->asoc.ipv6_addr_legal)) {
5820 if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_3)) {
5825 if (net_tmp != NULL && stcb_tmp == stcb) {
5826 net_tmp->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC;
5827 } else if (stcb_tmp != stcb) {
5828 /* It belongs to another association? */
5830 SCTP_TCB_UNLOCK(stcb_tmp);
5834 if (stcb->asoc.state == 0) {
5835 /* the assoc was freed? */
5839 * peer must explicitly turn this on. This may have been initialized
5840 * to be "on" in order to allow local addr changes while INIT's are
5843 stcb->asoc.peer_supports_asconf = 0;
5844 /* now we must go through each of the params. */
5845 phdr = sctp_get_next_param(m, offset, &parm_buf, sizeof(parm_buf));
5847 ptype = ntohs(phdr->param_type);
5848 plen = ntohs(phdr->param_length);
5850 * printf("ptype => %0x, plen => %d\n", (uint32_t)ptype,
5853 if (offset + plen > limit) {
5859 if (ptype == SCTP_IPV4_ADDRESS) {
5860 if (stcb->asoc.ipv4_addr_legal) {
5861 struct sctp_ipv4addr_param *p4, p4_buf;
5863 /* ok get the v4 address and check/add */
5864 phdr = sctp_get_next_param(m, offset,
5865 (struct sctp_paramhdr *)&p4_buf,
5867 if (plen != sizeof(struct sctp_ipv4addr_param) ||
5871 p4 = (struct sctp_ipv4addr_param *)phdr;
5872 sin.sin_addr.s_addr = p4->addr;
5873 if (IN_MULTICAST(ntohl(sin.sin_addr.s_addr))) {
5874 /* Skip multi-cast addresses */
5877 if ((sin.sin_addr.s_addr == INADDR_BROADCAST) ||
5878 (sin.sin_addr.s_addr == INADDR_ANY)) {
5881 sa = (struct sockaddr *)&sin;
5882 inp = stcb->sctp_ep;
5883 atomic_add_int(&stcb->asoc.refcnt, 1);
5884 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
5886 atomic_add_int(&stcb->asoc.refcnt, -1);
5888 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) ||
5890 /* we must add the source address */
5892 * no scope set since we have a tcb
5897 * we must validate the state again
5901 if (stcb->asoc.state == 0) {
5902 /* the assoc was freed? */
5905 if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_4)) {
5908 } else if (stcb_tmp == stcb) {
5909 if (stcb->asoc.state == 0) {
5910 /* the assoc was freed? */
5916 ~SCTP_ADDR_NOT_IN_ASSOC;
5920 * strange, address is in another
5921 * assoc? straighten out locks.
5924 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
5929 sctp_abort_an_association(stcb_tmp->sctp_ep,
5930 stcb_tmp, 1, NULL, 0);
5933 SCTP_TCB_UNLOCK(stcb_tmp);
5935 if (stcb->asoc.state == 0) {
5936 /* the assoc was freed? */
5942 } else if (ptype == SCTP_IPV6_ADDRESS) {
5943 if (stcb->asoc.ipv6_addr_legal) {
5944 /* ok get the v6 address and check/add */
5945 struct sctp_ipv6addr_param *p6, p6_buf;
5947 phdr = sctp_get_next_param(m, offset,
5948 (struct sctp_paramhdr *)&p6_buf,
5950 if (plen != sizeof(struct sctp_ipv6addr_param) ||
5954 p6 = (struct sctp_ipv6addr_param *)phdr;
5955 memcpy((caddr_t)&sin6.sin6_addr, p6->addr,
5957 if (IN6_IS_ADDR_MULTICAST(&sin6.sin6_addr)) {
5958 /* Skip multi-cast addresses */
5961 if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) {
5963 * Link local make no sense without
5968 sa = (struct sockaddr *)&sin6;
5969 inp = stcb->sctp_ep;
5970 atomic_add_int(&stcb->asoc.refcnt, 1);
5971 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
5973 atomic_add_int(&stcb->asoc.refcnt, -1);
5974 if (stcb_tmp == NULL &&
5975 (inp == stcb->sctp_ep || inp == NULL)) {
5977 * we must validate the state again
5981 if (stcb->asoc.state == 0) {
5982 /* the assoc was freed? */
5986 * we must add the address, no scope
5989 if (sctp_add_remote_addr(stcb, sa, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_5)) {
5992 } else if (stcb_tmp == stcb) {
5994 * we must validate the state again
5997 if (stcb->asoc.state == 0) {
5998 /* the assoc was freed? */
6004 ~SCTP_ADDR_NOT_IN_ASSOC;
6008 * strange, address is in another
6009 * assoc? straighten out locks.
6012 if (SCTP_GET_STATE(&stcb_tmp->asoc) & SCTP_STATE_COOKIE_WAIT) {
6017 sctp_abort_an_association(stcb_tmp->sctp_ep,
6018 stcb_tmp, 1, NULL, 0);
6021 SCTP_TCB_UNLOCK(stcb_tmp);
6023 if (stcb->asoc.state == 0) {
6024 /* the assoc was freed? */
6030 } else if (ptype == SCTP_ECN_CAPABLE) {
6031 stcb->asoc.ecn_allowed = 1;
6032 } else if (ptype == SCTP_ULP_ADAPTATION) {
6033 if (stcb->asoc.state != SCTP_STATE_OPEN) {
6034 struct sctp_adaptation_layer_indication ai,
6037 phdr = sctp_get_next_param(m, offset,
6038 (struct sctp_paramhdr *)&ai, sizeof(ai));
6039 aip = (struct sctp_adaptation_layer_indication *)phdr;
6041 stcb->asoc.peers_adaptation = ntohl(aip->indication);
6042 stcb->asoc.adaptation_needed = 1;
6045 } else if (ptype == SCTP_SET_PRIM_ADDR) {
6046 struct sctp_asconf_addr_param lstore, *fee;
6047 struct sctp_asconf_addrv4_param *fii;
6049 struct sockaddr *lsa = NULL;
6051 stcb->asoc.peer_supports_asconf = 1;
6052 if (plen > sizeof(lstore)) {
6055 phdr = sctp_get_next_param(m, offset,
6056 (struct sctp_paramhdr *)&lstore,
6057 min(plen, sizeof(lstore)));
6061 fee = (struct sctp_asconf_addr_param *)phdr;
6062 lptype = ntohs(fee->addrp.ph.param_type);
6063 if (lptype == SCTP_IPV4_ADDRESS) {
6065 sizeof(struct sctp_asconf_addrv4_param)) {
6066 SCTP_PRINTF("Sizeof setprim in init/init ack not %d but %d - ignored\n",
6067 (int)sizeof(struct sctp_asconf_addrv4_param),
6070 fii = (struct sctp_asconf_addrv4_param *)fee;
6071 sin.sin_addr.s_addr = fii->addrp.addr;
6072 lsa = (struct sockaddr *)&sin;
6074 } else if (lptype == SCTP_IPV6_ADDRESS) {
6076 sizeof(struct sctp_asconf_addr_param)) {
6077 SCTP_PRINTF("Sizeof setprim (v6) in init/init ack not %d but %d - ignored\n",
6078 (int)sizeof(struct sctp_asconf_addr_param),
6081 memcpy(sin6.sin6_addr.s6_addr,
6083 sizeof(fee->addrp.addr));
6084 lsa = (struct sockaddr *)&sin6;
6088 (void)sctp_set_primary_addr(stcb, sa, NULL);
6090 } else if (ptype == SCTP_HAS_NAT_SUPPORT) {
6091 stcb->asoc.peer_supports_nat = 1;
6092 } else if (ptype == SCTP_PRSCTP_SUPPORTED) {
6093 /* Peer supports pr-sctp */
6094 stcb->asoc.peer_supports_prsctp = 1;
6095 } else if (ptype == SCTP_SUPPORTED_CHUNK_EXT) {
6096 /* A supported extension chunk */
6097 struct sctp_supported_chunk_types_param *pr_supported;
6098 uint8_t local_store[SCTP_PARAM_BUFFER_SIZE];
6101 phdr = sctp_get_next_param(m, offset,
6102 (struct sctp_paramhdr *)&local_store, min(sizeof(local_store), plen));
6106 stcb->asoc.peer_supports_asconf = 0;
6107 stcb->asoc.peer_supports_prsctp = 0;
6108 stcb->asoc.peer_supports_pktdrop = 0;
6109 stcb->asoc.peer_supports_strreset = 0;
6110 stcb->asoc.peer_supports_nr_sack = 0;
6111 stcb->asoc.peer_supports_auth = 0;
6112 pr_supported = (struct sctp_supported_chunk_types_param *)phdr;
6113 num_ent = plen - sizeof(struct sctp_paramhdr);
6114 for (i = 0; i < num_ent; i++) {
6115 switch (pr_supported->chunk_types[i]) {
6117 case SCTP_ASCONF_ACK:
6118 stcb->asoc.peer_supports_asconf = 1;
6120 case SCTP_FORWARD_CUM_TSN:
6121 stcb->asoc.peer_supports_prsctp = 1;
6123 case SCTP_PACKET_DROPPED:
6124 stcb->asoc.peer_supports_pktdrop = 1;
6126 case SCTP_NR_SELECTIVE_ACK:
6127 stcb->asoc.peer_supports_nr_sack = 1;
6129 case SCTP_STREAM_RESET:
6130 stcb->asoc.peer_supports_strreset = 1;
6132 case SCTP_AUTHENTICATION:
6133 stcb->asoc.peer_supports_auth = 1;
6136 /* one I have not learned yet */
6141 } else if (ptype == SCTP_ECN_NONCE_SUPPORTED) {
6142 /* Peer supports ECN-nonce */
6143 stcb->asoc.peer_supports_ecn_nonce = 1;
6144 stcb->asoc.ecn_nonce_allowed = 1;
6145 } else if (ptype == SCTP_RANDOM) {
6146 if (plen > sizeof(random_store))
6149 /* already processed a RANDOM */
6152 phdr = sctp_get_next_param(m, offset,
6153 (struct sctp_paramhdr *)random_store,
6154 min(sizeof(random_store), plen));
6157 p_random = (struct sctp_auth_random *)phdr;
6158 random_len = plen - sizeof(*p_random);
6159 /* enforce the random length */
6160 if (random_len != SCTP_AUTH_RANDOM_SIZE_REQUIRED) {
6161 SCTPDBG(SCTP_DEBUG_AUTH1, "SCTP: invalid RANDOM len\n");
6165 } else if (ptype == SCTP_HMAC_LIST) {
6169 if (plen > sizeof(hmacs_store))
6172 /* already processed a HMAC list */
6175 phdr = sctp_get_next_param(m, offset,
6176 (struct sctp_paramhdr *)hmacs_store,
6177 min(plen, sizeof(hmacs_store)));
6180 hmacs = (struct sctp_auth_hmac_algo *)phdr;
6181 hmacs_len = plen - sizeof(*hmacs);
6182 num_hmacs = hmacs_len / sizeof(hmacs->hmac_ids[0]);
6183 /* validate the hmac list */
6184 if (sctp_verify_hmac_param(hmacs, num_hmacs)) {
6187 if (stcb->asoc.peer_hmacs != NULL)
6188 sctp_free_hmaclist(stcb->asoc.peer_hmacs);
6189 stcb->asoc.peer_hmacs = sctp_alloc_hmaclist(num_hmacs);
6190 if (stcb->asoc.peer_hmacs != NULL) {
6191 for (i = 0; i < num_hmacs; i++) {
6192 (void)sctp_auth_add_hmacid(stcb->asoc.peer_hmacs,
6193 ntohs(hmacs->hmac_ids[i]));
6197 } else if (ptype == SCTP_CHUNK_LIST) {
6200 if (plen > sizeof(chunks_store))
6203 /* already processed a Chunks list */
6206 phdr = sctp_get_next_param(m, offset,
6207 (struct sctp_paramhdr *)chunks_store,
6208 min(plen, sizeof(chunks_store)));
6211 chunks = (struct sctp_auth_chunk_list *)phdr;
6212 num_chunks = plen - sizeof(*chunks);
6213 if (stcb->asoc.peer_auth_chunks != NULL)
6214 sctp_clear_chunklist(stcb->asoc.peer_auth_chunks);
6216 stcb->asoc.peer_auth_chunks = sctp_alloc_chunklist();
6217 for (i = 0; i < num_chunks; i++) {
6218 (void)sctp_auth_add_chunk(chunks->chunk_types[i],
6219 stcb->asoc.peer_auth_chunks);
6220 /* record asconf/asconf-ack if listed */
6221 if (chunks->chunk_types[i] == SCTP_ASCONF)
6223 if (chunks->chunk_types[i] == SCTP_ASCONF_ACK)
6228 } else if ((ptype == SCTP_HEARTBEAT_INFO) ||
6229 (ptype == SCTP_STATE_COOKIE) ||
6230 (ptype == SCTP_UNRECOG_PARAM) ||
6231 (ptype == SCTP_COOKIE_PRESERVE) ||
6232 (ptype == SCTP_SUPPORTED_ADDRTYPE) ||
6233 (ptype == SCTP_ADD_IP_ADDRESS) ||
6234 (ptype == SCTP_DEL_IP_ADDRESS) ||
6235 (ptype == SCTP_ERROR_CAUSE_IND) ||
6236 (ptype == SCTP_SUCCESS_REPORT)) {
6239 if ((ptype & 0x8000) == 0x0000) {
6241 * must stop processing the rest of the
6242 * param's. Any report bits were handled
6244 * sctp_arethere_unrecognized_parameters()
6245 * when the INIT or INIT-ACK was first seen.
6252 offset += SCTP_SIZE32(plen);
6253 if (offset >= limit) {
6256 phdr = sctp_get_next_param(m, offset, &parm_buf,
6259 /* Now check to see if we need to purge any addresses */
6260 TAILQ_FOREACH_SAFE(net, &stcb->asoc.nets, sctp_next, nnet) {
6261 if ((net->dest_state & SCTP_ADDR_NOT_IN_ASSOC) ==
6262 SCTP_ADDR_NOT_IN_ASSOC) {
6263 /* This address has been removed from the asoc */
6264 /* remove and free it */
6265 stcb->asoc.numnets--;
6266 TAILQ_REMOVE(&stcb->asoc.nets, net, sctp_next);
6267 sctp_free_remote_addr(net);
6268 if (net == stcb->asoc.primary_destination) {
6269 stcb->asoc.primary_destination = NULL;
6270 sctp_select_primary_destination(stcb);
6274 /* validate authentication required parameters */
6275 if (got_random && got_hmacs) {
6276 stcb->asoc.peer_supports_auth = 1;
6278 stcb->asoc.peer_supports_auth = 0;
6280 if (!stcb->asoc.peer_supports_auth && got_chklist) {
6281 /* peer does not support auth but sent a chunks list? */
6284 if (!SCTP_BASE_SYSCTL(sctp_asconf_auth_nochk) && stcb->asoc.peer_supports_asconf &&
6285 !stcb->asoc.peer_supports_auth) {
6286 /* peer supports asconf but not auth? */
6288 } else if ((stcb->asoc.peer_supports_asconf) && (stcb->asoc.peer_supports_auth) &&
6289 ((saw_asconf == 0) || (saw_asconf_ack == 0))) {
6292 /* concatenate the full random key */
6293 keylen = sizeof(*p_random) + random_len + sizeof(*hmacs) + hmacs_len;
6294 if (chunks != NULL) {
6295 keylen += sizeof(*chunks) + num_chunks;
6297 new_key = sctp_alloc_key(keylen);
6298 if (new_key != NULL) {
6299 /* copy in the RANDOM */
6300 if (p_random != NULL) {
6301 keylen = sizeof(*p_random) + random_len;
6302 bcopy(p_random, new_key->key, keylen);
6304 /* append in the AUTH chunks */
6305 if (chunks != NULL) {
6306 bcopy(chunks, new_key->key + keylen,
6307 sizeof(*chunks) + num_chunks);
6308 keylen += sizeof(*chunks) + num_chunks;
6310 /* append in the HMACs */
6311 if (hmacs != NULL) {
6312 bcopy(hmacs, new_key->key + keylen,
6313 sizeof(*hmacs) + hmacs_len);
6316 /* failed to get memory for the key */
6319 if (stcb->asoc.authinfo.peer_random != NULL)
6320 sctp_free_key(stcb->asoc.authinfo.peer_random);
6321 stcb->asoc.authinfo.peer_random = new_key;
6322 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.assoc_keyid);
6323 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.recv_keyid);
6329 sctp_set_primary_addr(struct sctp_tcb *stcb, struct sockaddr *sa,
6330 struct sctp_nets *net)
6332 /* make sure the requested primary address exists in the assoc */
6333 if (net == NULL && sa)
6334 net = sctp_findnet(stcb, sa);
6337 /* didn't find the requested primary address! */
6340 /* set the primary address */
6341 if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
6342 /* Must be confirmed, so queue to set */
6343 net->dest_state |= SCTP_ADDR_REQ_PRIMARY;
6346 stcb->asoc.primary_destination = net;
6347 net->dest_state &= ~SCTP_ADDR_WAS_PRIMARY;
6348 net = TAILQ_FIRST(&stcb->asoc.nets);
6349 if (net != stcb->asoc.primary_destination) {
6351 * first one on the list is NOT the primary
6352 * sctp_cmpaddr() is much more efficient if the
6353 * primary is the first on the list, make it so.
6355 TAILQ_REMOVE(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6356 TAILQ_INSERT_HEAD(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6363 sctp_is_vtag_good(struct sctp_inpcb *inp, uint32_t tag, uint16_t lport, uint16_t rport, struct timeval *now, int save_in_twait)
6366 * This function serves two purposes. It will see if a TAG can be
6367 * re-used and return 1 for yes it is ok and 0 for don't use that
6368 * tag. A secondary function it will do is purge out old tags that
6371 struct sctpvtaghead *chain;
6372 struct sctp_tagblock *twait_block;
6373 struct sctpasochead *head;
6374 struct sctp_tcb *stcb;
6377 SCTP_INP_INFO_RLOCK();
6378 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(tag,
6379 SCTP_BASE_INFO(hashasocmark))];
6382 goto skip_vtag_check;
6384 LIST_FOREACH(stcb, head, sctp_asocs) {
6386 * We choose not to lock anything here. TCB's can't be
6387 * removed since we have the read lock, so they can't be
6388 * freed on us, same thing for the INP. I may be wrong with
6389 * this assumption, but we will go with it for now :-)
6391 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
6394 if (stcb->asoc.my_vtag == tag) {
6396 if (stcb->rport != rport) {
6399 if (stcb->sctp_ep->sctp_lport != lport) {
6402 /* Its a used tag set */
6403 SCTP_INP_INFO_RUNLOCK();
6409 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
6410 /* Now what about timed wait ? */
6411 if (!LIST_EMPTY(chain)) {
6413 * Block(s) are present, lets see if we have this tag in the
6416 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
6417 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
6418 if (twait_block->vtag_block[i].v_tag == 0) {
6421 } else if ((long)twait_block->vtag_block[i].tv_sec_at_expire <
6423 /* Audit expires this guy */
6424 twait_block->vtag_block[i].tv_sec_at_expire = 0;
6425 twait_block->vtag_block[i].v_tag = 0;
6426 twait_block->vtag_block[i].lport = 0;
6427 twait_block->vtag_block[i].rport = 0;
6428 } else if ((twait_block->vtag_block[i].v_tag == tag) &&
6429 (twait_block->vtag_block[i].lport == lport) &&
6430 (twait_block->vtag_block[i].rport == rport)) {
6431 /* Bad tag, sorry :< */
6432 SCTP_INP_INFO_RUNLOCK();
6438 SCTP_INP_INFO_RUNLOCK();
6443 static sctp_assoc_t reneged_asoc_ids[256];
6444 static uint8_t reneged_at = 0;
6448 sctp_drain_mbufs(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
6451 * We must hunt this association for MBUF's past the cumack (i.e.
6452 * out of order data that we can renege on).
6454 struct sctp_association *asoc;
6455 struct sctp_tmit_chunk *chk, *nchk;
6456 uint32_t cumulative_tsn_p1;
6457 struct sctp_queued_to_read *ctl, *nctl;
6462 /* We look for anything larger than the cum-ack + 1 */
6465 if (asoc->cumulative_tsn == asoc->highest_tsn_inside_map) {
6466 /* none we can reneg on. */
6469 SCTP_STAT_INCR(sctps_protocol_drains_done);
6470 cumulative_tsn_p1 = asoc->cumulative_tsn + 1;
6472 /* First look in the re-assembly queue */
6473 TAILQ_FOREACH_SAFE(chk, &asoc->reasmqueue, sctp_next, nchk) {
6474 if (SCTP_TSN_GT(chk->rec.data.TSN_seq, cumulative_tsn_p1)) {
6475 /* Yep it is above cum-ack */
6477 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.TSN_seq, asoc->mapping_array_base_tsn);
6478 asoc->size_on_reasm_queue = sctp_sbspace_sub(asoc->size_on_reasm_queue, chk->send_size);
6479 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6480 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6481 TAILQ_REMOVE(&asoc->reasmqueue, chk, sctp_next);
6483 sctp_m_freem(chk->data);
6486 sctp_free_a_chunk(stcb, chk);
6489 /* Ok that was fun, now we will drain all the inbound streams? */
6490 for (strmat = 0; strmat < asoc->streamincnt; strmat++) {
6491 TAILQ_FOREACH_SAFE(ctl, &asoc->strmin[strmat].inqueue, next, nctl) {
6492 if (SCTP_TSN_GT(ctl->sinfo_tsn, cumulative_tsn_p1)) {
6493 /* Yep it is above cum-ack */
6495 SCTP_CALC_TSN_TO_GAP(gap, ctl->sinfo_tsn, asoc->mapping_array_base_tsn);
6496 asoc->size_on_all_streams = sctp_sbspace_sub(asoc->size_on_all_streams, ctl->length);
6497 sctp_ucount_decr(asoc->cnt_on_all_streams);
6498 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6499 TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, ctl, next);
6501 sctp_m_freem(ctl->data);
6504 sctp_free_remote_addr(ctl->whoFrom);
6505 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), ctl);
6506 SCTP_DECR_READQ_COUNT();
6511 /* We must back down to see what the new highest is */
6512 for (i = asoc->highest_tsn_inside_map; SCTP_TSN_GE(i, asoc->mapping_array_base_tsn); i--) {
6513 SCTP_CALC_TSN_TO_GAP(gap, i, asoc->mapping_array_base_tsn);
6514 if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) {
6515 asoc->highest_tsn_inside_map = i;
6521 asoc->highest_tsn_inside_map = asoc->mapping_array_base_tsn - 1;
6524 * Question, should we go through the delivery queue? The
6525 * only reason things are on here is the app not reading OR
6526 * a p-d-api up. An attacker COULD send enough in to
6527 * initiate the PD-API and then send a bunch of stuff to
6528 * other streams... these would wind up on the delivery
6529 * queue.. and then we would not get to them. But in order
6530 * to do this I then have to back-track and un-deliver
6531 * sequence numbers in streams.. el-yucko. I think for now
6532 * we will NOT look at the delivery queue and leave it to be
6533 * something to consider later. An alternative would be to
6534 * abort the P-D-API with a notification and then deliver
6535 * the data.... Or another method might be to keep track of
6536 * how many times the situation occurs and if we see a
6537 * possible attack underway just abort the association.
6540 SCTPDBG(SCTP_DEBUG_PCB1, "Freed %d chunks from reneg harvest\n", cnt);
6543 * Now do we need to find a new
6544 * asoc->highest_tsn_inside_map?
6546 asoc->last_revoke_count = cnt;
6547 (void)SCTP_OS_TIMER_STOP(&stcb->asoc.dack_timer.timer);
6548 /* sa_ignore NO_NULL_CHK */
6549 sctp_send_sack(stcb);
6550 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_DRAIN, SCTP_SO_NOT_LOCKED);
6551 reneged_asoc_ids[reneged_at] = sctp_get_associd(stcb);
6555 * Another issue, in un-setting the TSN's in the mapping array we
6556 * DID NOT adjust the highest_tsn marker. This will cause one of
6557 * two things to occur. It may cause us to do extra work in checking
6558 * for our mapping array movement. More importantly it may cause us
6559 * to SACK every datagram. This may not be a bad thing though since
6560 * we will recover once we get our cum-ack above and all this stuff
6561 * we dumped recovered.
6569 * We must walk the PCB lists for ALL associations here. The system
6570 * is LOW on MBUF's and needs help. This is where reneging will
6571 * occur. We really hope this does NOT happen!
6573 VNET_ITERATOR_DECL(vnet_iter);
6574 VNET_LIST_RLOCK_NOSLEEP();
6575 VNET_FOREACH(vnet_iter) {
6576 CURVNET_SET(vnet_iter);
6577 struct sctp_inpcb *inp;
6578 struct sctp_tcb *stcb;
6580 SCTP_STAT_INCR(sctps_protocol_drain_calls);
6581 if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) {
6588 SCTP_INP_INFO_RLOCK();
6589 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
6590 /* For each endpoint */
6591 SCTP_INP_RLOCK(inp);
6592 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
6593 /* For each association */
6594 SCTP_TCB_LOCK(stcb);
6595 sctp_drain_mbufs(inp, stcb);
6596 SCTP_TCB_UNLOCK(stcb);
6598 SCTP_INP_RUNLOCK(inp);
6600 SCTP_INP_INFO_RUNLOCK();
6603 VNET_LIST_RUNLOCK_NOSLEEP();
6607 * start a new iterator
6608 * iterates through all endpoints and associations based on the pcb_state
6609 * flags and asoc_state. "af" (mandatory) is executed for all matching
6610 * assocs and "ef" (optional) is executed when the iterator completes.
6611 * "inpf" (optional) is executed for each new endpoint as it is being
6612 * iterated through. inpe (optional) is called when the inp completes
6613 * its way through all the stcbs.
6616 sctp_initiate_iterator(inp_func inpf,
6620 uint32_t pcb_features,
6621 uint32_t asoc_state,
6625 struct sctp_inpcb *s_inp,
6626 uint8_t chunk_output_off)
6628 struct sctp_iterator *it = NULL;
6633 SCTP_MALLOC(it, struct sctp_iterator *, sizeof(struct sctp_iterator),
6636 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
6639 memset(it, 0, sizeof(*it));
6640 it->function_assoc = af;
6641 it->function_inp = inpf;
6643 it->done_current_ep = 0;
6645 it->done_current_ep = 1;
6646 it->function_atend = ef;
6649 it->pcb_flags = pcb_state;
6650 it->pcb_features = pcb_features;
6651 it->asoc_state = asoc_state;
6652 it->function_inp_end = inpe;
6653 it->no_chunk_output = chunk_output_off;
6656 /* Assume lock is held here */
6658 SCTP_INP_INCR_REF(it->inp);
6659 it->iterator_flags = SCTP_ITERATOR_DO_SINGLE_INP;
6661 SCTP_INP_INFO_RLOCK();
6662 it->inp = LIST_FIRST(&SCTP_BASE_INFO(listhead));
6664 SCTP_INP_INCR_REF(it->inp);
6666 SCTP_INP_INFO_RUNLOCK();
6667 it->iterator_flags = SCTP_ITERATOR_DO_ALL_INP;
6670 SCTP_IPI_ITERATOR_WQ_LOCK();
6672 TAILQ_INSERT_TAIL(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
6673 if (sctp_it_ctl.iterator_running == 0) {
6674 sctp_wakeup_iterator();
6676 SCTP_IPI_ITERATOR_WQ_UNLOCK();
6677 /* sa_ignore MEMLEAK {memory is put on the tailq for the iterator} */